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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
4de283e4 | 32 | #include "dwarf2read.h" |
d55e5aa6 TT |
33 | #include "dwarf-index-cache.h" |
34 | #include "dwarf-index-common.h" | |
4de283e4 TT |
35 | #include "bfd.h" |
36 | #include "elf-bfd.h" | |
37 | #include "symtab.h" | |
38 | #include "gdbtypes.h" | |
39 | #include "objfiles.h" | |
d55e5aa6 | 40 | #include "dwarf2.h" |
4de283e4 TT |
41 | #include "buildsym.h" |
42 | #include "demangle.h" | |
43 | #include "gdb-demangle.h" | |
4de283e4 TT |
44 | #include "filenames.h" /* for DOSish file names */ |
45 | #include "macrotab.h" | |
46 | #include "language.h" | |
47 | #include "complaints.h" | |
d55e5aa6 TT |
48 | #include "dwarf2expr.h" |
49 | #include "dwarf2loc.h" | |
4de283e4 TT |
50 | #include "cp-support.h" |
51 | #include "hashtab.h" | |
52 | #include "command.h" | |
d55e5aa6 | 53 | #include "gdbcmd.h" |
4de283e4 TT |
54 | #include "block.h" |
55 | #include "addrmap.h" | |
56 | #include "typeprint.h" | |
57 | #include "psympriv.h" | |
4de283e4 | 58 | #include "c-lang.h" |
d55e5aa6 | 59 | #include "go-lang.h" |
4de283e4 TT |
60 | #include "valprint.h" |
61 | #include "gdbcore.h" /* for gnutarget */ | |
62 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
63 | #include "gdb_bfd.h" |
64 | #include "f-lang.h" | |
65 | #include "source.h" | |
4de283e4 | 66 | #include "build-id.h" |
d55e5aa6 | 67 | #include "namespace.h" |
268a13a5 TT |
68 | #include "gdbsupport/function-view.h" |
69 | #include "gdbsupport/gdb_optional.h" | |
70 | #include "gdbsupport/underlying.h" | |
268a13a5 | 71 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 72 | #include "filename-seen-cache.h" |
b32b108a | 73 | #include "producer.h" |
4de283e4 | 74 | #include <fcntl.h> |
4de283e4 | 75 | #include <algorithm> |
4de283e4 | 76 | #include <unordered_map> |
268a13a5 | 77 | #include "gdbsupport/selftest.h" |
c9317f21 | 78 | #include "rust-lang.h" |
268a13a5 | 79 | #include "gdbsupport/pathstuff.h" |
437afbb8 | 80 | |
73be47f5 DE |
81 | /* When == 1, print basic high level tracing messages. |
82 | When > 1, be more verbose. | |
b4f54984 DE |
83 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
84 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 85 | |
d97bc12b | 86 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 87 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 88 | |
27e0867f DE |
89 | /* When non-zero, dump line number entries as they are read in. */ |
90 | static unsigned int dwarf_line_debug = 0; | |
91 | ||
491144b5 CB |
92 | /* When true, cross-check physname against demangler. */ |
93 | static bool check_physname = false; | |
900e11f9 | 94 | |
491144b5 CB |
95 | /* When true, do not reject deprecated .gdb_index sections. */ |
96 | static bool use_deprecated_index_sections = false; | |
481860b3 | 97 | |
5bfd760d | 98 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 99 | |
f1e6e072 TT |
100 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
101 | ||
102 | static int dwarf2_locexpr_index; | |
103 | static int dwarf2_loclist_index; | |
104 | static int dwarf2_locexpr_block_index; | |
105 | static int dwarf2_loclist_block_index; | |
106 | ||
3f563c84 PA |
107 | /* An index into a (C++) symbol name component in a symbol name as |
108 | recorded in the mapped_index's symbol table. For each C++ symbol | |
109 | in the symbol table, we record one entry for the start of each | |
110 | component in the symbol in a table of name components, and then | |
111 | sort the table, in order to be able to binary search symbol names, | |
112 | ignoring leading namespaces, both completion and regular look up. | |
113 | For example, for symbol "A::B::C", we'll have an entry that points | |
114 | to "A::B::C", another that points to "B::C", and another for "C". | |
115 | Note that function symbols in GDB index have no parameter | |
116 | information, just the function/method names. You can convert a | |
117 | name_component to a "const char *" using the | |
118 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
119 | ||
120 | struct name_component | |
121 | { | |
122 | /* Offset in the symbol name where the component starts. Stored as | |
123 | a (32-bit) offset instead of a pointer to save memory and improve | |
124 | locality on 64-bit architectures. */ | |
125 | offset_type name_offset; | |
126 | ||
127 | /* The symbol's index in the symbol and constant pool tables of a | |
128 | mapped_index. */ | |
129 | offset_type idx; | |
130 | }; | |
131 | ||
44ed8f3e PA |
132 | /* Base class containing bits shared by both .gdb_index and |
133 | .debug_name indexes. */ | |
134 | ||
135 | struct mapped_index_base | |
136 | { | |
22ca247e TT |
137 | mapped_index_base () = default; |
138 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
139 | ||
44ed8f3e PA |
140 | /* The name_component table (a sorted vector). See name_component's |
141 | description above. */ | |
142 | std::vector<name_component> name_components; | |
143 | ||
144 | /* How NAME_COMPONENTS is sorted. */ | |
145 | enum case_sensitivity name_components_casing; | |
146 | ||
147 | /* Return the number of names in the symbol table. */ | |
148 | virtual size_t symbol_name_count () const = 0; | |
149 | ||
150 | /* Get the name of the symbol at IDX in the symbol table. */ | |
151 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
152 | ||
153 | /* Return whether the name at IDX in the symbol table should be | |
154 | ignored. */ | |
155 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
156 | { | |
157 | return false; | |
158 | } | |
159 | ||
160 | /* Build the symbol name component sorted vector, if we haven't | |
161 | yet. */ | |
162 | void build_name_components (); | |
163 | ||
164 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
165 | possible matches for LN_NO_PARAMS in the name component | |
166 | vector. */ | |
167 | std::pair<std::vector<name_component>::const_iterator, | |
168 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
169 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
170 | enum language lang) const; | |
44ed8f3e PA |
171 | |
172 | /* Prevent deleting/destroying via a base class pointer. */ | |
173 | protected: | |
174 | ~mapped_index_base() = default; | |
175 | }; | |
176 | ||
9291a0cd TT |
177 | /* A description of the mapped index. The file format is described in |
178 | a comment by the code that writes the index. */ | |
fc898b42 | 179 | struct mapped_index final : public mapped_index_base |
9291a0cd | 180 | { |
f00a2de2 PA |
181 | /* A slot/bucket in the symbol table hash. */ |
182 | struct symbol_table_slot | |
183 | { | |
184 | const offset_type name; | |
185 | const offset_type vec; | |
186 | }; | |
187 | ||
559a7a62 | 188 | /* Index data format version. */ |
3063847f | 189 | int version = 0; |
559a7a62 | 190 | |
f00a2de2 PA |
191 | /* The address table data. */ |
192 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 193 | |
3876f04e | 194 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 195 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 196 | |
9291a0cd | 197 | /* A pointer to the constant pool. */ |
3063847f | 198 | const char *constant_pool = nullptr; |
3f563c84 | 199 | |
44ed8f3e PA |
200 | bool symbol_name_slot_invalid (offset_type idx) const override |
201 | { | |
202 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 203 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 204 | } |
5c58de74 | 205 | |
3f563c84 PA |
206 | /* Convenience method to get at the name of the symbol at IDX in the |
207 | symbol table. */ | |
44ed8f3e | 208 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 209 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 210 | |
44ed8f3e PA |
211 | size_t symbol_name_count () const override |
212 | { return this->symbol_table.size (); } | |
9291a0cd TT |
213 | }; |
214 | ||
927aa2e7 JK |
215 | /* A description of the mapped .debug_names. |
216 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 217 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 218 | { |
ed2dc618 SM |
219 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
220 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
221 | {} | |
222 | ||
223 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
224 | bfd_endian dwarf5_byte_order; |
225 | bool dwarf5_is_dwarf64; | |
226 | bool augmentation_is_gdb; | |
227 | uint8_t offset_size; | |
228 | uint32_t cu_count = 0; | |
229 | uint32_t tu_count, bucket_count, name_count; | |
230 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
231 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
232 | const gdb_byte *name_table_string_offs_reordered; | |
233 | const gdb_byte *name_table_entry_offs_reordered; | |
234 | const gdb_byte *entry_pool; | |
235 | ||
236 | struct index_val | |
237 | { | |
238 | ULONGEST dwarf_tag; | |
239 | struct attr | |
240 | { | |
241 | /* Attribute name DW_IDX_*. */ | |
242 | ULONGEST dw_idx; | |
243 | ||
244 | /* Attribute form DW_FORM_*. */ | |
245 | ULONGEST form; | |
246 | ||
247 | /* Value if FORM is DW_FORM_implicit_const. */ | |
248 | LONGEST implicit_const; | |
249 | }; | |
250 | std::vector<attr> attr_vec; | |
251 | }; | |
252 | ||
253 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
254 | ||
255 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
256 | |
257 | /* Implementation of the mapped_index_base virtual interface, for | |
258 | the name_components cache. */ | |
259 | ||
260 | const char *symbol_name_at (offset_type idx) const override | |
261 | { return namei_to_name (idx); } | |
262 | ||
263 | size_t symbol_name_count () const override | |
264 | { return this->name_count; } | |
927aa2e7 JK |
265 | }; |
266 | ||
cd4fb1b2 | 267 | /* See dwarf2read.h. */ |
ed2dc618 | 268 | |
cd4fb1b2 | 269 | dwarf2_per_objfile * |
ed2dc618 SM |
270 | get_dwarf2_per_objfile (struct objfile *objfile) |
271 | { | |
5bfd760d | 272 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 273 | } |
c906108c | 274 | |
251d32d9 | 275 | /* Default names of the debugging sections. */ |
c906108c | 276 | |
233a11ab CS |
277 | /* Note that if the debugging section has been compressed, it might |
278 | have a name like .zdebug_info. */ | |
279 | ||
9cdd5dbd DE |
280 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
281 | { | |
251d32d9 TG |
282 | { ".debug_info", ".zdebug_info" }, |
283 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
284 | { ".debug_line", ".zdebug_line" }, | |
285 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 286 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 287 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 288 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 289 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 290 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 291 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 292 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 293 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 294 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 295 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
296 | { ".debug_frame", ".zdebug_frame" }, |
297 | { ".eh_frame", NULL }, | |
24d3216f | 298 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
299 | { ".debug_names", ".zdebug_names" }, |
300 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 301 | 23 |
251d32d9 | 302 | }; |
c906108c | 303 | |
80626a55 | 304 | /* List of DWO/DWP sections. */ |
3019eac3 | 305 | |
80626a55 | 306 | static const struct dwop_section_names |
3019eac3 DE |
307 | { |
308 | struct dwarf2_section_names abbrev_dwo; | |
309 | struct dwarf2_section_names info_dwo; | |
310 | struct dwarf2_section_names line_dwo; | |
311 | struct dwarf2_section_names loc_dwo; | |
43988095 | 312 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
313 | struct dwarf2_section_names macinfo_dwo; |
314 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
315 | struct dwarf2_section_names str_dwo; |
316 | struct dwarf2_section_names str_offsets_dwo; | |
317 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
318 | struct dwarf2_section_names cu_index; |
319 | struct dwarf2_section_names tu_index; | |
3019eac3 | 320 | } |
80626a55 | 321 | dwop_section_names = |
3019eac3 DE |
322 | { |
323 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
324 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
325 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
326 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 327 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
328 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
329 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
330 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
331 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
332 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
333 | { ".debug_cu_index", ".zdebug_cu_index" }, |
334 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
335 | }; |
336 | ||
c906108c SS |
337 | /* local data types */ |
338 | ||
107d2387 AC |
339 | /* The data in a compilation unit header, after target2host |
340 | translation, looks like this. */ | |
c906108c | 341 | struct comp_unit_head |
a738430d | 342 | { |
c764a876 | 343 | unsigned int length; |
a738430d | 344 | short version; |
a738430d MK |
345 | unsigned char addr_size; |
346 | unsigned char signed_addr_p; | |
9c541725 | 347 | sect_offset abbrev_sect_off; |
57349743 | 348 | |
a738430d MK |
349 | /* Size of file offsets; either 4 or 8. */ |
350 | unsigned int offset_size; | |
57349743 | 351 | |
a738430d MK |
352 | /* Size of the length field; either 4 or 12. */ |
353 | unsigned int initial_length_size; | |
57349743 | 354 | |
43988095 JK |
355 | enum dwarf_unit_type unit_type; |
356 | ||
a738430d MK |
357 | /* Offset to the first byte of this compilation unit header in the |
358 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 359 | sect_offset sect_off; |
57349743 | 360 | |
d00adf39 DE |
361 | /* Offset to first die in this cu from the start of the cu. |
362 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 363 | cu_offset first_die_cu_offset; |
43988095 | 364 | |
a084a2a6 AT |
365 | |
366 | /* 64-bit signature of this unit. For type units, it denotes the signature of | |
367 | the type (DW_UT_type in DWARF 4, additionally DW_UT_split_type in DWARF 5). | |
368 | Also used in DWARF 5, to denote the dwo id when the unit type is | |
369 | DW_UT_skeleton or DW_UT_split_compile. */ | |
43988095 JK |
370 | ULONGEST signature; |
371 | ||
372 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 373 | cu_offset type_cu_offset_in_tu; |
a738430d | 374 | }; |
c906108c | 375 | |
3da10d80 KS |
376 | /* Type used for delaying computation of method physnames. |
377 | See comments for compute_delayed_physnames. */ | |
378 | struct delayed_method_info | |
379 | { | |
380 | /* The type to which the method is attached, i.e., its parent class. */ | |
381 | struct type *type; | |
382 | ||
383 | /* The index of the method in the type's function fieldlists. */ | |
384 | int fnfield_index; | |
385 | ||
386 | /* The index of the method in the fieldlist. */ | |
387 | int index; | |
388 | ||
389 | /* The name of the DIE. */ | |
390 | const char *name; | |
391 | ||
392 | /* The DIE associated with this method. */ | |
393 | struct die_info *die; | |
394 | }; | |
395 | ||
e7c27a73 DJ |
396 | /* Internal state when decoding a particular compilation unit. */ |
397 | struct dwarf2_cu | |
398 | { | |
fcd3b13d SM |
399 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
400 | ~dwarf2_cu (); | |
401 | ||
402 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
403 | ||
c24bdb02 KS |
404 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
405 | Create the set of symtabs used by this TU, or if this TU is sharing | |
406 | symtabs with another TU and the symtabs have already been created | |
407 | then restore those symtabs in the line header. | |
408 | We don't need the pc/line-number mapping for type units. */ | |
409 | void setup_type_unit_groups (struct die_info *die); | |
410 | ||
411 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
412 | buildsym_compunit constructor. */ | |
413 | struct compunit_symtab *start_symtab (const char *name, | |
414 | const char *comp_dir, | |
415 | CORE_ADDR low_pc); | |
416 | ||
417 | /* Reset the builder. */ | |
418 | void reset_builder () { m_builder.reset (); } | |
419 | ||
d00adf39 | 420 | /* The header of the compilation unit. */ |
fcd3b13d | 421 | struct comp_unit_head header {}; |
e142c38c | 422 | |
d00adf39 | 423 | /* Base address of this compilation unit. */ |
fcd3b13d | 424 | CORE_ADDR base_address = 0; |
d00adf39 DE |
425 | |
426 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 427 | int base_known = 0; |
d00adf39 | 428 | |
e142c38c | 429 | /* The language we are debugging. */ |
fcd3b13d SM |
430 | enum language language = language_unknown; |
431 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 432 | |
fcd3b13d | 433 | const char *producer = nullptr; |
b0f35d58 | 434 | |
c24bdb02 | 435 | private: |
804d2729 TT |
436 | /* The symtab builder for this CU. This is only non-NULL when full |
437 | symbols are being read. */ | |
c24bdb02 | 438 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 439 | |
c24bdb02 | 440 | public: |
e142c38c DJ |
441 | /* The generic symbol table building routines have separate lists for |
442 | file scope symbols and all all other scopes (local scopes). So | |
443 | we need to select the right one to pass to add_symbol_to_list(). | |
444 | We do it by keeping a pointer to the correct list in list_in_scope. | |
445 | ||
446 | FIXME: The original dwarf code just treated the file scope as the | |
447 | first local scope, and all other local scopes as nested local | |
448 | scopes, and worked fine. Check to see if we really need to | |
449 | distinguish these in buildsym.c. */ | |
fcd3b13d | 450 | struct pending **list_in_scope = nullptr; |
e142c38c | 451 | |
b64f50a1 JK |
452 | /* Hash table holding all the loaded partial DIEs |
453 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 454 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
455 | |
456 | /* Storage for things with the same lifetime as this read-in compilation | |
457 | unit, including partial DIEs. */ | |
fcd3b13d | 458 | auto_obstack comp_unit_obstack; |
72bf9492 | 459 | |
ae038cb0 DJ |
460 | /* When multiple dwarf2_cu structures are living in memory, this field |
461 | chains them all together, so that they can be released efficiently. | |
462 | We will probably also want a generation counter so that most-recently-used | |
463 | compilation units are cached... */ | |
fcd3b13d | 464 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 465 | |
69d751e3 | 466 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
467 | struct dwarf2_per_cu_data *per_cu; |
468 | ||
469 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 470 | int last_used = 0; |
ae038cb0 | 471 | |
b64f50a1 JK |
472 | /* A hash table of DIE cu_offset for following references with |
473 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 474 | htab_t die_hash = nullptr; |
10b3939b DJ |
475 | |
476 | /* Full DIEs if read in. */ | |
fcd3b13d | 477 | struct die_info *dies = nullptr; |
10b3939b DJ |
478 | |
479 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
480 | units referenced by this one. Only set during full symbol processing; | |
481 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 482 | htab_t dependencies = nullptr; |
10b3939b | 483 | |
cb1df416 | 484 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 485 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
486 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
487 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
488 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
489 | to the line header as long as this DIE is being processed. See | |
490 | process_die_scope. */ | |
fcd3b13d | 491 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 492 | |
3da10d80 KS |
493 | /* A list of methods which need to have physnames computed |
494 | after all type information has been read. */ | |
c89b44cd | 495 | std::vector<delayed_method_info> method_list; |
3da10d80 | 496 | |
96408a79 | 497 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 498 | htab_t call_site_htab = nullptr; |
96408a79 | 499 | |
034e5797 DE |
500 | /* Non-NULL if this CU came from a DWO file. |
501 | There is an invariant here that is important to remember: | |
502 | Except for attributes copied from the top level DIE in the "main" | |
503 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 504 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
505 | Either there isn't a DWO file (in which case this is NULL and the point |
506 | is moot), or there is and either we're not going to read it (in which | |
507 | case this is NULL) or there is and we are reading it (in which case this | |
508 | is non-NULL). */ | |
fcd3b13d | 509 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 510 | |
18a8505e | 511 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 512 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 513 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 514 | |
18a8505e | 515 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 516 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 517 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
518 | be used without needing to know whether DWO files are in use or not. |
519 | N.B. This does not apply to DW_AT_ranges appearing in | |
520 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
521 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 522 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 523 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 524 | ULONGEST ranges_base = 0; |
2e3cf129 | 525 | |
c9317f21 TT |
526 | /* When reading debug info generated by older versions of rustc, we |
527 | have to rewrite some union types to be struct types with a | |
528 | variant part. This rewriting must be done after the CU is fully | |
529 | read in, because otherwise at the point of rewriting some struct | |
530 | type might not have been fully processed. So, we keep a list of | |
531 | all such types here and process them after expansion. */ | |
532 | std::vector<struct type *> rust_unions; | |
533 | ||
18a8505e AT |
534 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
535 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
536 | value is often implicit and is the size of the header of | |
537 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
538 | gdb::optional<ULONGEST> str_offsets_base; | |
539 | ||
ae038cb0 | 540 | /* Mark used when releasing cached dies. */ |
9068261f | 541 | bool mark : 1; |
ae038cb0 | 542 | |
8be455d7 JK |
543 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
544 | This test is imperfect as there may exist optimized debug code not using | |
545 | any location list and still facing inlining issues if handled as | |
546 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 547 | bool has_loclist : 1; |
ba919b58 | 548 | |
9068261f | 549 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
550 | if all the producer_is_* fields are valid. This information is cached |
551 | because profiling CU expansion showed excessive time spent in | |
552 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
553 | bool checked_producer : 1; |
554 | bool producer_is_gxx_lt_4_6 : 1; | |
555 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 556 | bool producer_is_icc : 1; |
9068261f | 557 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 558 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 559 | |
9068261f | 560 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
561 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
562 | this information, but later versions do. */ | |
563 | ||
9068261f | 564 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
565 | |
566 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
567 | |
568 | /* If this CU was inherited by another CU (via specification, | |
569 | abstract_origin, etc), this is the ancestor CU. */ | |
570 | dwarf2_cu *ancestor; | |
571 | ||
572 | /* Get the buildsym_compunit for this CU. */ | |
573 | buildsym_compunit *get_builder () | |
574 | { | |
575 | /* If this CU has a builder associated with it, use that. */ | |
576 | if (m_builder != nullptr) | |
577 | return m_builder.get (); | |
578 | ||
579 | /* Otherwise, search ancestors for a valid builder. */ | |
580 | if (ancestor != nullptr) | |
581 | return ancestor->get_builder (); | |
582 | ||
583 | return nullptr; | |
584 | } | |
e7c27a73 DJ |
585 | }; |
586 | ||
094b34ac DE |
587 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
588 | This includes type_unit_group and quick_file_names. */ | |
589 | ||
590 | struct stmt_list_hash | |
591 | { | |
592 | /* The DWO unit this table is from or NULL if there is none. */ | |
593 | struct dwo_unit *dwo_unit; | |
594 | ||
595 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 596 | sect_offset line_sect_off; |
094b34ac DE |
597 | }; |
598 | ||
f4dc4d17 DE |
599 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
600 | an object of this type. */ | |
601 | ||
602 | struct type_unit_group | |
603 | { | |
0186c6a7 | 604 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
605 | To simplify things we create an artificial CU that "includes" all the |
606 | type units using this stmt_list so that the rest of the code still has | |
607 | a "per_cu" handle on the symtab. | |
608 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 609 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
610 | struct dwarf2_per_cu_data per_cu; |
611 | ||
0186c6a7 DE |
612 | /* The TUs that share this DW_AT_stmt_list entry. |
613 | This is added to while parsing type units to build partial symtabs, | |
614 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 615 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 616 | |
43f3e411 | 617 | /* The compunit symtab. |
094b34ac | 618 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
619 | so we create an essentially anonymous symtab as the compunit symtab. */ |
620 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 621 | |
094b34ac DE |
622 | /* The data used to construct the hash key. */ |
623 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
624 | |
625 | /* The number of symtabs from the line header. | |
626 | The value here must match line_header.num_file_names. */ | |
627 | unsigned int num_symtabs; | |
628 | ||
629 | /* The symbol tables for this TU (obtained from the files listed in | |
630 | DW_AT_stmt_list). | |
631 | WARNING: The order of entries here must match the order of entries | |
632 | in the line header. After the first TU using this type_unit_group, the | |
633 | line header for the subsequent TUs is recreated from this. This is done | |
634 | because we need to use the same symtabs for each TU using the same | |
635 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
636 | there's no guarantee the line header doesn't have duplicate entries. */ | |
637 | struct symtab **symtabs; | |
638 | }; | |
639 | ||
73869dc2 | 640 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
641 | |
642 | struct dwo_sections | |
643 | { | |
644 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
645 | struct dwarf2_section_info line; |
646 | struct dwarf2_section_info loc; | |
43988095 | 647 | struct dwarf2_section_info loclists; |
09262596 DE |
648 | struct dwarf2_section_info macinfo; |
649 | struct dwarf2_section_info macro; | |
3019eac3 DE |
650 | struct dwarf2_section_info str; |
651 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
652 | /* In the case of a virtual DWO file, these two are unused. */ |
653 | struct dwarf2_section_info info; | |
fd5866f6 | 654 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
655 | }; |
656 | ||
c88ee1f0 | 657 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
658 | |
659 | struct dwo_unit | |
660 | { | |
661 | /* Backlink to the containing struct dwo_file. */ | |
662 | struct dwo_file *dwo_file; | |
663 | ||
664 | /* The "id" that distinguishes this CU/TU. | |
665 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
666 | Since signatures came first, we stick with it for consistency. */ | |
667 | ULONGEST signature; | |
668 | ||
669 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 670 | struct dwarf2_section_info *section; |
3019eac3 | 671 | |
9c541725 PA |
672 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
673 | sect_offset sect_off; | |
3019eac3 DE |
674 | unsigned int length; |
675 | ||
676 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
677 | cu_offset type_offset_in_tu; | |
678 | }; | |
679 | ||
73869dc2 DE |
680 | /* include/dwarf2.h defines the DWP section codes. |
681 | It defines a max value but it doesn't define a min value, which we | |
682 | use for error checking, so provide one. */ | |
683 | ||
684 | enum dwp_v2_section_ids | |
685 | { | |
686 | DW_SECT_MIN = 1 | |
687 | }; | |
688 | ||
80626a55 | 689 | /* Data for one DWO file. |
57d63ce2 DE |
690 | |
691 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
692 | appears in a DWP file). DWP files don't really have DWO files per se - | |
693 | comdat folding of types "loses" the DWO file they came from, and from | |
694 | a high level view DWP files appear to contain a mass of random types. | |
695 | However, to maintain consistency with the non-DWP case we pretend DWP | |
696 | files contain virtual DWO files, and we assign each TU with one virtual | |
697 | DWO file (generally based on the line and abbrev section offsets - | |
698 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
699 | |
700 | struct dwo_file | |
701 | { | |
51ac9db5 SM |
702 | dwo_file () = default; |
703 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
704 | ||
18a8505e | 705 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
706 | For virtual DWO files the name is constructed from the section offsets |
707 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
708 | from related CU+TUs. */ | |
51ac9db5 | 709 | const char *dwo_name = nullptr; |
0ac5b59e DE |
710 | |
711 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 712 | const char *comp_dir = nullptr; |
3019eac3 | 713 | |
80626a55 DE |
714 | /* The bfd, when the file is open. Otherwise this is NULL. |
715 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 716 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 717 | |
73869dc2 DE |
718 | /* The sections that make up this DWO file. |
719 | Remember that for virtual DWO files in DWP V2, these are virtual | |
720 | sections (for lack of a better name). */ | |
51ac9db5 | 721 | struct dwo_sections sections {}; |
3019eac3 | 722 | |
33c5cd75 DB |
723 | /* The CUs in the file. |
724 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
725 | an extension to handle LLVM's Link Time Optimization output (where | |
726 | multiple source files may be compiled into a single object/dwo pair). */ | |
51ac9db5 | 727 | htab_t cus {}; |
3019eac3 DE |
728 | |
729 | /* Table of TUs in the file. | |
730 | Each element is a struct dwo_unit. */ | |
51ac9db5 | 731 | htab_t tus {}; |
3019eac3 DE |
732 | }; |
733 | ||
80626a55 DE |
734 | /* These sections are what may appear in a DWP file. */ |
735 | ||
736 | struct dwp_sections | |
737 | { | |
73869dc2 | 738 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
739 | struct dwarf2_section_info str; |
740 | struct dwarf2_section_info cu_index; | |
741 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
742 | |
743 | /* These are only used by DWP version 2 files. | |
744 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
745 | sections are referenced by section number, and are not recorded here. | |
746 | In DWP version 2 there is at most one copy of all these sections, each | |
747 | section being (effectively) comprised of the concatenation of all of the | |
748 | individual sections that exist in the version 1 format. | |
749 | To keep the code simple we treat each of these concatenated pieces as a | |
750 | section itself (a virtual section?). */ | |
751 | struct dwarf2_section_info abbrev; | |
752 | struct dwarf2_section_info info; | |
753 | struct dwarf2_section_info line; | |
754 | struct dwarf2_section_info loc; | |
755 | struct dwarf2_section_info macinfo; | |
756 | struct dwarf2_section_info macro; | |
757 | struct dwarf2_section_info str_offsets; | |
758 | struct dwarf2_section_info types; | |
80626a55 DE |
759 | }; |
760 | ||
73869dc2 DE |
761 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
762 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 763 | |
73869dc2 | 764 | struct virtual_v1_dwo_sections |
80626a55 DE |
765 | { |
766 | struct dwarf2_section_info abbrev; | |
767 | struct dwarf2_section_info line; | |
768 | struct dwarf2_section_info loc; | |
769 | struct dwarf2_section_info macinfo; | |
770 | struct dwarf2_section_info macro; | |
771 | struct dwarf2_section_info str_offsets; | |
772 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 773 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
774 | struct dwarf2_section_info info_or_types; |
775 | }; | |
776 | ||
73869dc2 DE |
777 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
778 | In version 2, the sections of the DWO files are concatenated together | |
779 | and stored in one section of that name. Thus each ELF section contains | |
780 | several "virtual" sections. */ | |
781 | ||
782 | struct virtual_v2_dwo_sections | |
783 | { | |
784 | bfd_size_type abbrev_offset; | |
785 | bfd_size_type abbrev_size; | |
786 | ||
787 | bfd_size_type line_offset; | |
788 | bfd_size_type line_size; | |
789 | ||
790 | bfd_size_type loc_offset; | |
791 | bfd_size_type loc_size; | |
792 | ||
793 | bfd_size_type macinfo_offset; | |
794 | bfd_size_type macinfo_size; | |
795 | ||
796 | bfd_size_type macro_offset; | |
797 | bfd_size_type macro_size; | |
798 | ||
799 | bfd_size_type str_offsets_offset; | |
800 | bfd_size_type str_offsets_size; | |
801 | ||
802 | /* Each DWP hash table entry records one CU or one TU. | |
803 | That is recorded here, and copied to dwo_unit.section. */ | |
804 | bfd_size_type info_or_types_offset; | |
805 | bfd_size_type info_or_types_size; | |
806 | }; | |
807 | ||
80626a55 DE |
808 | /* Contents of DWP hash tables. */ |
809 | ||
810 | struct dwp_hash_table | |
811 | { | |
73869dc2 | 812 | uint32_t version, nr_columns; |
80626a55 | 813 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
814 | const gdb_byte *hash_table, *unit_table; |
815 | union | |
816 | { | |
817 | struct | |
818 | { | |
819 | const gdb_byte *indices; | |
820 | } v1; | |
821 | struct | |
822 | { | |
823 | /* This is indexed by column number and gives the id of the section | |
824 | in that column. */ | |
825 | #define MAX_NR_V2_DWO_SECTIONS \ | |
826 | (1 /* .debug_info or .debug_types */ \ | |
827 | + 1 /* .debug_abbrev */ \ | |
828 | + 1 /* .debug_line */ \ | |
829 | + 1 /* .debug_loc */ \ | |
830 | + 1 /* .debug_str_offsets */ \ | |
831 | + 1 /* .debug_macro or .debug_macinfo */) | |
832 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
833 | const gdb_byte *offsets; | |
834 | const gdb_byte *sizes; | |
835 | } v2; | |
836 | } section_pool; | |
80626a55 DE |
837 | }; |
838 | ||
839 | /* Data for one DWP file. */ | |
840 | ||
841 | struct dwp_file | |
842 | { | |
400174b1 TT |
843 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
844 | : name (name_), | |
845 | dbfd (std::move (abfd)) | |
846 | { | |
847 | } | |
848 | ||
80626a55 DE |
849 | /* Name of the file. */ |
850 | const char *name; | |
851 | ||
73869dc2 | 852 | /* File format version. */ |
400174b1 | 853 | int version = 0; |
73869dc2 | 854 | |
93417882 | 855 | /* The bfd. */ |
400174b1 | 856 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
857 | |
858 | /* Section info for this file. */ | |
400174b1 | 859 | struct dwp_sections sections {}; |
80626a55 | 860 | |
57d63ce2 | 861 | /* Table of CUs in the file. */ |
400174b1 | 862 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
863 | |
864 | /* Table of TUs in the file. */ | |
400174b1 | 865 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 866 | |
19ac8c2e | 867 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
868 | htab_t loaded_cus {}; |
869 | htab_t loaded_tus {}; | |
80626a55 | 870 | |
73869dc2 DE |
871 | /* Table to map ELF section numbers to their sections. |
872 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
873 | unsigned int num_sections = 0; |
874 | asection **elf_sections = nullptr; | |
80626a55 DE |
875 | }; |
876 | ||
c0ab21c2 TT |
877 | struct abbrev_table; |
878 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; | |
879 | ||
0963b4bd MS |
880 | /* Struct used to pass misc. parameters to read_die_and_children, et |
881 | al. which are used for both .debug_info and .debug_types dies. | |
882 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 883 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
884 | |
885 | struct die_reader_specs | |
886 | { | |
a32a8923 | 887 | /* The bfd of die_section. */ |
93311388 DE |
888 | bfd* abfd; |
889 | ||
890 | /* The CU of the DIE we are parsing. */ | |
891 | struct dwarf2_cu *cu; | |
892 | ||
80626a55 | 893 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
894 | struct dwo_file *dwo_file; |
895 | ||
dee91e82 | 896 | /* The section the die comes from. |
3019eac3 | 897 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
898 | struct dwarf2_section_info *die_section; |
899 | ||
900 | /* die_section->buffer. */ | |
d521ce57 | 901 | const gdb_byte *buffer; |
f664829e DE |
902 | |
903 | /* The end of the buffer. */ | |
904 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
905 | |
906 | /* The value of the DW_AT_comp_dir attribute. */ | |
907 | const char *comp_dir; | |
685af9cd TT |
908 | |
909 | /* The abbreviation table to use when reading the DIEs. */ | |
910 | struct abbrev_table *abbrev_table; | |
93311388 DE |
911 | }; |
912 | ||
c0ab21c2 TT |
913 | /* A subclass of die_reader_specs that holds storage and has complex |
914 | constructor and destructor behavior. */ | |
915 | ||
916 | class cutu_reader : public die_reader_specs | |
917 | { | |
918 | public: | |
919 | ||
920 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
921 | struct abbrev_table *abbrev_table, | |
922 | int use_existing_cu, int keep, | |
923 | bool skip_partial); | |
924 | ||
925 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
926 | struct dwarf2_cu *parent_cu = nullptr, | |
927 | struct dwo_file *dwo_file = nullptr); | |
928 | ||
929 | ~cutu_reader (); | |
930 | ||
931 | DISABLE_COPY_AND_ASSIGN (cutu_reader); | |
932 | ||
933 | const gdb_byte *info_ptr = nullptr; | |
934 | struct die_info *comp_unit_die = nullptr; | |
935 | int has_children = 0; | |
936 | bool dummy_p = false; | |
937 | ||
938 | private: | |
939 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
940 | int use_existing_cu, int keep); | |
941 | ||
942 | struct dwarf2_per_cu_data *m_this_cu; | |
943 | int m_keep = 0; | |
944 | std::unique_ptr<dwarf2_cu> m_new_cu; | |
945 | ||
946 | /* The ordinary abbreviation table. */ | |
947 | abbrev_table_up m_abbrev_table_holder; | |
948 | ||
949 | /* The DWO abbreviation table. */ | |
950 | abbrev_table_up m_dwo_abbrev_table; | |
951 | }; | |
dee91e82 | 952 | |
7ba99d21 AT |
953 | /* dir_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 and |
954 | later. */ | |
955 | typedef int dir_index; | |
ecfb656c | 956 | |
7ba99d21 AT |
957 | /* file_name_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 |
958 | and later. */ | |
959 | typedef int file_name_index; | |
ecfb656c | 960 | |
52059ffd TT |
961 | struct file_entry |
962 | { | |
fff8551c PA |
963 | file_entry () = default; |
964 | ||
ecfb656c | 965 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
966 | unsigned int mod_time_, unsigned int length_) |
967 | : name (name_), | |
ecfb656c | 968 | d_index (d_index_), |
fff8551c PA |
969 | mod_time (mod_time_), |
970 | length (length_) | |
971 | {} | |
972 | ||
ecfb656c PA |
973 | /* Return the include directory at D_INDEX stored in LH. Returns |
974 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
975 | const char *include_dir (const line_header *lh) const; |
976 | ||
fff8551c PA |
977 | /* The file name. Note this is an observing pointer. The memory is |
978 | owned by debug_line_buffer. */ | |
979 | const char *name {}; | |
980 | ||
8c43009f | 981 | /* The directory index (1-based). */ |
ecfb656c | 982 | dir_index d_index {}; |
fff8551c PA |
983 | |
984 | unsigned int mod_time {}; | |
985 | ||
986 | unsigned int length {}; | |
987 | ||
988 | /* True if referenced by the Line Number Program. */ | |
989 | bool included_p {}; | |
990 | ||
83769d0b | 991 | /* The associated symbol table, if any. */ |
fff8551c | 992 | struct symtab *symtab {}; |
52059ffd TT |
993 | }; |
994 | ||
debd256d JB |
995 | /* The line number information for a compilation unit (found in the |
996 | .debug_line section) begins with a "statement program header", | |
997 | which contains the following information. */ | |
998 | struct line_header | |
999 | { | |
fff8551c PA |
1000 | line_header () |
1001 | : offset_in_dwz {} | |
1002 | {} | |
1003 | ||
1004 | /* Add an entry to the include directory table. */ | |
1005 | void add_include_dir (const char *include_dir); | |
1006 | ||
1007 | /* Add an entry to the file name table. */ | |
ecfb656c | 1008 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1009 | unsigned int mod_time, unsigned int length); |
1010 | ||
7ba99d21 AT |
1011 | /* Return the include dir at INDEX (0-based in DWARF 5 and 1-based before). |
1012 | Returns NULL if INDEX is out of bounds. */ | |
ecfb656c | 1013 | const char *include_dir_at (dir_index index) const |
8c43009f | 1014 | { |
7ba99d21 AT |
1015 | int vec_index; |
1016 | if (version >= 5) | |
1017 | vec_index = index; | |
1018 | else | |
1019 | vec_index = index - 1; | |
1020 | if (vec_index < 0 || vec_index >= m_include_dirs.size ()) | |
8c43009f | 1021 | return NULL; |
7ba99d21 | 1022 | return m_include_dirs[vec_index]; |
8c43009f PA |
1023 | } |
1024 | ||
7ba99d21 | 1025 | bool is_valid_file_index (int file_index) |
8c43009f | 1026 | { |
7ba99d21 AT |
1027 | if (version >= 5) |
1028 | return 0 <= file_index && file_index < file_names_size (); | |
1029 | return 1 <= file_index && file_index <= file_names_size (); | |
1030 | } | |
ecfb656c | 1031 | |
7ba99d21 AT |
1032 | /* Return the file name at INDEX (0-based in DWARF 5 and 1-based before). |
1033 | Returns NULL if INDEX is out of bounds. */ | |
1034 | file_entry *file_name_at (file_name_index index) | |
1035 | { | |
1036 | int vec_index; | |
1037 | if (version >= 5) | |
1038 | vec_index = index; | |
1039 | else | |
1040 | vec_index = index - 1; | |
1041 | if (vec_index < 0 || vec_index >= m_file_names.size ()) | |
fff8551c | 1042 | return NULL; |
7ba99d21 | 1043 | return &m_file_names[vec_index]; |
fff8551c PA |
1044 | } |
1045 | ||
7ba99d21 AT |
1046 | /* The indexes are 0-based in DWARF 5 and 1-based in DWARF 4. Therefore, |
1047 | this method should only be used to iterate through all file entries in an | |
1048 | index-agnostic manner. */ | |
1049 | std::vector<file_entry> &file_names () | |
1050 | { return m_file_names; } | |
1051 | ||
527f3840 | 1052 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1053 | sect_offset sect_off {}; |
527f3840 JK |
1054 | |
1055 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1056 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1057 | ||
1058 | unsigned int total_length {}; | |
1059 | unsigned short version {}; | |
1060 | unsigned int header_length {}; | |
1061 | unsigned char minimum_instruction_length {}; | |
1062 | unsigned char maximum_ops_per_instruction {}; | |
1063 | unsigned char default_is_stmt {}; | |
1064 | int line_base {}; | |
1065 | unsigned char line_range {}; | |
1066 | unsigned char opcode_base {}; | |
debd256d JB |
1067 | |
1068 | /* standard_opcode_lengths[i] is the number of operands for the | |
1069 | standard opcode whose value is i. This means that | |
1070 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1071 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1072 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1073 | |
7ba99d21 AT |
1074 | int file_names_size () |
1075 | { return m_file_names.size(); } | |
debd256d JB |
1076 | |
1077 | /* The start and end of the statement program following this | |
6502dd73 | 1078 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1079 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
7ba99d21 AT |
1080 | |
1081 | private: | |
1082 | /* The include_directories table. Note these are observing | |
1083 | pointers. The memory is owned by debug_line_buffer. */ | |
1084 | std::vector<const char *> m_include_dirs; | |
1085 | ||
1086 | /* The file_names table. This is private because the meaning of indexes | |
1087 | differs among DWARF versions (The first valid index is 1 in DWARF 4 and | |
1088 | before, and is 0 in DWARF 5 and later). So the client should use | |
1089 | file_name_at method for access. */ | |
1090 | std::vector<file_entry> m_file_names; | |
debd256d | 1091 | }; |
c906108c | 1092 | |
fff8551c PA |
1093 | typedef std::unique_ptr<line_header> line_header_up; |
1094 | ||
8c43009f PA |
1095 | const char * |
1096 | file_entry::include_dir (const line_header *lh) const | |
1097 | { | |
ecfb656c | 1098 | return lh->include_dir_at (d_index); |
8c43009f PA |
1099 | } |
1100 | ||
c906108c | 1101 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1102 | need this much information. */ |
6f06d47b | 1103 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1104 | { |
6f06d47b YQ |
1105 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1106 | ||
1107 | /* Disable assign but still keep copy ctor, which is needed | |
1108 | load_partial_dies. */ | |
1109 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1110 | ||
52356b79 YQ |
1111 | /* Adjust the partial die before generating a symbol for it. This |
1112 | function may set the is_external flag or change the DIE's | |
1113 | name. */ | |
1114 | void fixup (struct dwarf2_cu *cu); | |
1115 | ||
48fbe735 YQ |
1116 | /* Read a minimal amount of information into the minimal die |
1117 | structure. */ | |
1118 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1119 | const struct abbrev_info &abbrev, | |
1120 | const gdb_byte *info_ptr); | |
1121 | ||
72bf9492 | 1122 | /* Offset of this DIE. */ |
6f06d47b | 1123 | const sect_offset sect_off; |
72bf9492 DJ |
1124 | |
1125 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1126 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1127 | |
72bf9492 | 1128 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1129 | const unsigned int has_children : 1; |
1130 | ||
72bf9492 DJ |
1131 | unsigned int is_external : 1; |
1132 | unsigned int is_declaration : 1; | |
1133 | unsigned int has_type : 1; | |
1134 | unsigned int has_specification : 1; | |
1135 | unsigned int has_pc_info : 1; | |
481860b3 | 1136 | unsigned int may_be_inlined : 1; |
72bf9492 | 1137 | |
0c1b455e TT |
1138 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1139 | unsigned int main_subprogram : 1; | |
1140 | ||
72bf9492 DJ |
1141 | /* Flag set if the SCOPE field of this structure has been |
1142 | computed. */ | |
1143 | unsigned int scope_set : 1; | |
1144 | ||
fa4028e9 JB |
1145 | /* Flag set if the DIE has a byte_size attribute. */ |
1146 | unsigned int has_byte_size : 1; | |
1147 | ||
ff908ebf AW |
1148 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1149 | unsigned int has_const_value : 1; | |
1150 | ||
98bfdba5 PA |
1151 | /* Flag set if any of the DIE's children are template arguments. */ |
1152 | unsigned int has_template_arguments : 1; | |
1153 | ||
52356b79 | 1154 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1155 | unsigned int fixup_called : 1; |
1156 | ||
36586728 TT |
1157 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1158 | unsigned int is_dwz : 1; | |
1159 | ||
1160 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1161 | unsigned int spec_is_dwz : 1; | |
1162 | ||
72bf9492 | 1163 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1164 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1165 | const char *name = nullptr; |
72bf9492 | 1166 | |
abc72ce4 | 1167 | /* The linkage name, if present. */ |
6f06d47b | 1168 | const char *linkage_name = nullptr; |
abc72ce4 | 1169 | |
72bf9492 DJ |
1170 | /* The scope to prepend to our children. This is generally |
1171 | allocated on the comp_unit_obstack, so will disappear | |
1172 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1173 | const char *scope = nullptr; |
72bf9492 | 1174 | |
95554aad TT |
1175 | /* Some data associated with the partial DIE. The tag determines |
1176 | which field is live. */ | |
1177 | union | |
1178 | { | |
1179 | /* The location description associated with this DIE, if any. */ | |
1180 | struct dwarf_block *locdesc; | |
1181 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1182 | sect_offset sect_off; |
6f06d47b | 1183 | } d {}; |
72bf9492 DJ |
1184 | |
1185 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1186 | CORE_ADDR lowpc = 0; |
1187 | CORE_ADDR highpc = 0; | |
72bf9492 | 1188 | |
93311388 | 1189 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1190 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1191 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1192 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1193 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1194 | |
1195 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1196 | DW_AT_specification (or DW_AT_abstract_origin or | |
1197 | DW_AT_extension). */ | |
6f06d47b | 1198 | sect_offset spec_offset {}; |
72bf9492 DJ |
1199 | |
1200 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1201 | if any. */ | |
6f06d47b YQ |
1202 | struct partial_die_info *die_parent = nullptr; |
1203 | struct partial_die_info *die_child = nullptr; | |
1204 | struct partial_die_info *die_sibling = nullptr; | |
1205 | ||
1206 | friend struct partial_die_info * | |
1207 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1208 | ||
1209 | private: | |
1210 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1211 | partial_die_info (sect_offset sect_off) | |
1212 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1213 | { | |
1214 | } | |
1215 | ||
1216 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1217 | int has_children_) | |
1218 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1219 | { | |
1220 | is_external = 0; | |
1221 | is_declaration = 0; | |
1222 | has_type = 0; | |
1223 | has_specification = 0; | |
1224 | has_pc_info = 0; | |
1225 | may_be_inlined = 0; | |
1226 | main_subprogram = 0; | |
1227 | scope_set = 0; | |
1228 | has_byte_size = 0; | |
1229 | has_const_value = 0; | |
1230 | has_template_arguments = 0; | |
1231 | fixup_called = 0; | |
1232 | is_dwz = 0; | |
1233 | spec_is_dwz = 0; | |
1234 | } | |
c906108c SS |
1235 | }; |
1236 | ||
0963b4bd | 1237 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1238 | struct abbrev_info |
1239 | { | |
1240 | unsigned int number; /* number identifying abbrev */ | |
1241 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1242 | unsigned short has_children; /* boolean */ |
1243 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1244 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1245 | struct abbrev_info *next; /* next in chain */ | |
1246 | }; | |
1247 | ||
1248 | struct attr_abbrev | |
1249 | { | |
9d25dd43 DE |
1250 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1251 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1252 | |
1253 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1254 | LONGEST implicit_const; | |
c906108c SS |
1255 | }; |
1256 | ||
433df2d4 DE |
1257 | /* Size of abbrev_table.abbrev_hash_table. */ |
1258 | #define ABBREV_HASH_SIZE 121 | |
1259 | ||
1260 | /* Top level data structure to contain an abbreviation table. */ | |
1261 | ||
1262 | struct abbrev_table | |
1263 | { | |
685af9cd TT |
1264 | explicit abbrev_table (sect_offset off) |
1265 | : sect_off (off) | |
1266 | { | |
4a17f768 | 1267 | m_abbrevs = |
685af9cd | 1268 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1269 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1270 | } |
1271 | ||
1272 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1273 | ||
1274 | /* Allocate space for a struct abbrev_info object in | |
1275 | ABBREV_TABLE. */ | |
1276 | struct abbrev_info *alloc_abbrev (); | |
1277 | ||
1278 | /* Add an abbreviation to the table. */ | |
1279 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1280 | ||
1281 | /* Look up an abbrev in the table. | |
1282 | Returns NULL if the abbrev is not found. */ | |
1283 | ||
1284 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1285 | ||
1286 | ||
f4dc4d17 DE |
1287 | /* Where the abbrev table came from. |
1288 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1289 | const sect_offset sect_off; |
433df2d4 DE |
1290 | |
1291 | /* Storage for the abbrev table. */ | |
685af9cd | 1292 | auto_obstack abbrev_obstack; |
433df2d4 | 1293 | |
4a17f768 YQ |
1294 | private: |
1295 | ||
433df2d4 DE |
1296 | /* Hash table of abbrevs. |
1297 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1298 | It could be statically allocated, but the previous code didn't so we | |
1299 | don't either. */ | |
4a17f768 | 1300 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1301 | }; |
1302 | ||
0963b4bd | 1303 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1304 | struct attribute |
1305 | { | |
9d25dd43 | 1306 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1307 | ENUM_BITFIELD(dwarf_form) form : 15; |
1308 | ||
1309 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1310 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1311 | here for better struct attribute alignment. */ | |
1312 | unsigned int string_is_canonical : 1; | |
1313 | ||
b60c80d6 DJ |
1314 | union |
1315 | { | |
15d034d0 | 1316 | const char *str; |
b60c80d6 | 1317 | struct dwarf_block *blk; |
43bbcdc2 PH |
1318 | ULONGEST unsnd; |
1319 | LONGEST snd; | |
b60c80d6 | 1320 | CORE_ADDR addr; |
ac9ec31b | 1321 | ULONGEST signature; |
b60c80d6 DJ |
1322 | } |
1323 | u; | |
1324 | }; | |
1325 | ||
0963b4bd | 1326 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1327 | struct die_info |
1328 | { | |
76815b17 DE |
1329 | /* DWARF-2 tag for this DIE. */ |
1330 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1331 | ||
1332 | /* Number of attributes */ | |
98bfdba5 PA |
1333 | unsigned char num_attrs; |
1334 | ||
1335 | /* True if we're presently building the full type name for the | |
1336 | type derived from this DIE. */ | |
1337 | unsigned char building_fullname : 1; | |
76815b17 | 1338 | |
adde2bff DE |
1339 | /* True if this die is in process. PR 16581. */ |
1340 | unsigned char in_process : 1; | |
1341 | ||
76815b17 DE |
1342 | /* Abbrev number */ |
1343 | unsigned int abbrev; | |
1344 | ||
93311388 | 1345 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1346 | sect_offset sect_off; |
78ba4af6 JB |
1347 | |
1348 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1349 | points to this die's parent; CHILD points to the first child of | |
1350 | this node; and all the children of a given node are chained | |
4950bc1c | 1351 | together via their SIBLING fields. */ |
639d11d3 DC |
1352 | struct die_info *child; /* Its first child, if any. */ |
1353 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1354 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1355 | |
b60c80d6 DJ |
1356 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1357 | zero, but it's not common and zero-sized arrays are not | |
1358 | sufficiently portable C. */ | |
1359 | struct attribute attrs[1]; | |
c906108c SS |
1360 | }; |
1361 | ||
0963b4bd | 1362 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1363 | |
1364 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1365 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1366 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1367 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1368 | #define DW_SND(attr) ((attr)->u.snd) | |
1369 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1370 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1371 | |
0963b4bd | 1372 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1373 | struct dwarf_block |
1374 | { | |
56eb65bd | 1375 | size_t size; |
1d6edc3c JK |
1376 | |
1377 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1378 | const gdb_byte *data; |
c906108c SS |
1379 | }; |
1380 | ||
c906108c SS |
1381 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1382 | but this would require a corresponding change in unpack_field_as_long | |
1383 | and friends. */ | |
1384 | static int bits_per_byte = 8; | |
1385 | ||
2ddeaf8a TT |
1386 | /* When reading a variant or variant part, we track a bit more |
1387 | information about the field, and store it in an object of this | |
1388 | type. */ | |
1389 | ||
1390 | struct variant_field | |
1391 | { | |
1392 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1393 | value. */ | |
1394 | ULONGEST discriminant_value; | |
1395 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1396 | default branch. */ | |
1397 | bool default_branch; | |
1398 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1399 | field is the discriminant. */ | |
1400 | bool is_discriminant; | |
1401 | }; | |
1402 | ||
52059ffd TT |
1403 | struct nextfield |
1404 | { | |
be2daae6 TT |
1405 | int accessibility = 0; |
1406 | int virtuality = 0; | |
2ddeaf8a | 1407 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1408 | struct variant_field variant {}; |
1409 | struct field field {}; | |
52059ffd TT |
1410 | }; |
1411 | ||
1412 | struct fnfieldlist | |
1413 | { | |
be2daae6 TT |
1414 | const char *name = nullptr; |
1415 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1416 | }; |
1417 | ||
c906108c SS |
1418 | /* The routines that read and process dies for a C struct or C++ class |
1419 | pass lists of data member fields and lists of member function fields | |
1420 | in an instance of a field_info structure, as defined below. */ | |
1421 | struct field_info | |
c5aa993b | 1422 | { |
0963b4bd | 1423 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1424 | std::vector<struct nextfield> fields; |
1425 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1426 | |
7d0ccb61 | 1427 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1428 | int nfields = 0; |
c906108c | 1429 | |
85102364 | 1430 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1431 | int non_public_fields = 0; |
c906108c | 1432 | |
c5aa993b JM |
1433 | /* Member function fieldlist array, contains name of possibly overloaded |
1434 | member function, number of overloaded member functions and a pointer | |
1435 | to the head of the member function field chain. */ | |
be2daae6 | 1436 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1437 | |
1438 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1439 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1440 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1441 | |
1442 | /* Nested types defined by this class and the number of elements in this | |
1443 | list. */ | |
be2daae6 | 1444 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1445 | }; |
c906108c | 1446 | |
10b3939b DJ |
1447 | /* One item on the queue of compilation units to read in full symbols |
1448 | for. */ | |
1449 | struct dwarf2_queue_item | |
1450 | { | |
1451 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1452 | enum language pretend_language; |
10b3939b DJ |
1453 | struct dwarf2_queue_item *next; |
1454 | }; | |
1455 | ||
1456 | /* The current queue. */ | |
1457 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1458 | ||
ae038cb0 DJ |
1459 | /* Loaded secondary compilation units are kept in memory until they |
1460 | have not been referenced for the processing of this many | |
1461 | compilation units. Set this to zero to disable caching. Cache | |
1462 | sizes of up to at least twenty will improve startup time for | |
1463 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1464 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1465 | static void |
b4f54984 DE |
1466 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1467 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1468 | { |
3e43a32a | 1469 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1470 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1471 | value); |
1472 | } | |
4390d890 | 1473 | \f |
c906108c SS |
1474 | /* local function prototypes */ |
1475 | ||
a32a8923 DE |
1476 | static const char *get_section_name (const struct dwarf2_section_info *); |
1477 | ||
1478 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1479 | ||
918dd910 JK |
1480 | static void dwarf2_find_base_address (struct die_info *die, |
1481 | struct dwarf2_cu *cu); | |
1482 | ||
891813be | 1483 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1484 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1485 | ||
f1902523 JK |
1486 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1487 | const gdb_byte *info_ptr, | |
1488 | struct die_info *type_unit_die, | |
c0ab21c2 | 1489 | int has_children); |
f1902523 | 1490 | |
ed2dc618 SM |
1491 | static void dwarf2_build_psymtabs_hard |
1492 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1493 | |
72bf9492 DJ |
1494 | static void scan_partial_symbols (struct partial_die_info *, |
1495 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1496 | int, struct dwarf2_cu *); |
c906108c | 1497 | |
72bf9492 DJ |
1498 | static void add_partial_symbol (struct partial_die_info *, |
1499 | struct dwarf2_cu *); | |
63d06c5c | 1500 | |
72bf9492 DJ |
1501 | static void add_partial_namespace (struct partial_die_info *pdi, |
1502 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1503 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1504 | |
5d7cb8df | 1505 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1506 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1507 | struct dwarf2_cu *cu); |
1508 | ||
72bf9492 DJ |
1509 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1510 | struct dwarf2_cu *cu); | |
91c24f0a | 1511 | |
bc30ff58 JB |
1512 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1513 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1514 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1515 | |
685af9cd | 1516 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1517 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1518 | sect_offset); | |
433df2d4 | 1519 | |
d521ce57 | 1520 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1521 | |
dee91e82 | 1522 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1523 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1524 | |
fb816e8b TV |
1525 | /* A pair of partial_die_info and compilation unit. */ |
1526 | struct cu_partial_die_info | |
1527 | { | |
1528 | /* The compilation unit of the partial_die_info. */ | |
1529 | struct dwarf2_cu *cu; | |
1530 | /* A partial_die_info. */ | |
1531 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1532 | |
1533 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1534 | : cu (cu), | |
1535 | pdi (pdi) | |
405feb71 | 1536 | { /* Nothing. */ } |
122cf0f2 AB |
1537 | |
1538 | private: | |
1539 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1540 | }; |
1541 | ||
122cf0f2 AB |
1542 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1543 | struct dwarf2_cu *); | |
72bf9492 | 1544 | |
d521ce57 TT |
1545 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1546 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1547 | const gdb_byte *, bool *need_reprocess); |
1548 | ||
1549 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1550 | struct attribute *attr); | |
1551 | ||
1552 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1553 | |
a1855c1d | 1554 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1555 | |
a1855c1d | 1556 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1557 | |
a1855c1d | 1558 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1559 | |
15f18d14 AT |
1560 | /* Read the next three bytes (little-endian order) as an unsigned integer. */ |
1561 | static unsigned int read_3_bytes (bfd *, const gdb_byte *); | |
1562 | ||
a1855c1d | 1563 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1564 | |
a1855c1d | 1565 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1566 | |
d521ce57 | 1567 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1568 | unsigned int *); |
c906108c | 1569 | |
d521ce57 | 1570 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1571 | |
1572 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1573 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1574 | unsigned int *, unsigned int *); |
613e1657 | 1575 | |
d521ce57 TT |
1576 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1577 | const struct comp_unit_head *, | |
c764a876 DE |
1578 | unsigned int *); |
1579 | ||
d521ce57 | 1580 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1581 | |
ed2dc618 SM |
1582 | static sect_offset read_abbrev_offset |
1583 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1584 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1585 | |
d521ce57 | 1586 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1587 | |
d521ce57 | 1588 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1589 | |
ed2dc618 SM |
1590 | static const char *read_indirect_string |
1591 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1592 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1593 | |
ed2dc618 SM |
1594 | static const char *read_indirect_line_string |
1595 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1596 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1597 | |
ed2dc618 SM |
1598 | static const char *read_indirect_string_at_offset |
1599 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1600 | LONGEST str_offset); | |
927aa2e7 | 1601 | |
ed2dc618 SM |
1602 | static const char *read_indirect_string_from_dwz |
1603 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1604 | |
d521ce57 | 1605 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1606 | |
d521ce57 TT |
1607 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1608 | const gdb_byte *, | |
3019eac3 DE |
1609 | unsigned int *); |
1610 | ||
18a8505e AT |
1611 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1612 | ULONGEST str_index); | |
1613 | ||
1614 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1615 | ULONGEST str_index); | |
3019eac3 | 1616 | |
e142c38c | 1617 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1618 | |
e142c38c DJ |
1619 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1620 | struct dwarf2_cu *); | |
c906108c | 1621 | |
348e048f | 1622 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1623 | unsigned int); |
348e048f | 1624 | |
7d45c7c3 KB |
1625 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1626 | struct dwarf2_cu *cu); | |
1627 | ||
a084a2a6 AT |
1628 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1629 | ||
05cf31d1 JB |
1630 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1631 | struct dwarf2_cu *cu); | |
1632 | ||
e142c38c | 1633 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1634 | |
e142c38c | 1635 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1636 | struct dwarf2_cu **); |
63d06c5c | 1637 | |
9c541725 | 1638 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1639 | struct dwarf2_cu *cu); |
debd256d | 1640 | |
f3f5162e | 1641 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1642 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1643 | CORE_ADDR, int decode_mapping); |
c906108c | 1644 | |
804d2729 TT |
1645 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1646 | const char *); | |
c906108c | 1647 | |
a14ed312 | 1648 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1649 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1650 | |
ff39bb5e | 1651 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1652 | struct dwarf2_cu *); |
c906108c | 1653 | |
ff39bb5e | 1654 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1655 | struct type *type, |
1656 | const char *name, | |
1657 | struct obstack *obstack, | |
12df843f | 1658 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1659 | const gdb_byte **bytes, |
98bfdba5 | 1660 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1661 | |
e7c27a73 | 1662 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1663 | |
b4ba55a1 JB |
1664 | static int need_gnat_info (struct dwarf2_cu *); |
1665 | ||
3e43a32a MS |
1666 | static struct type *die_descriptive_type (struct die_info *, |
1667 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1668 | |
1669 | static void set_descriptive_type (struct type *, struct die_info *, | |
1670 | struct dwarf2_cu *); | |
1671 | ||
e7c27a73 DJ |
1672 | static struct type *die_containing_type (struct die_info *, |
1673 | struct dwarf2_cu *); | |
c906108c | 1674 | |
ff39bb5e | 1675 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1676 | struct dwarf2_cu *); |
c906108c | 1677 | |
f792889a | 1678 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1679 | |
673bfd45 DE |
1680 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1681 | ||
0d5cff50 | 1682 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1683 | |
6e70227d | 1684 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1685 | const char *suffix, int physname, |
1686 | struct dwarf2_cu *cu); | |
63d06c5c | 1687 | |
e7c27a73 | 1688 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1689 | |
348e048f DE |
1690 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1691 | ||
e7c27a73 | 1692 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1693 | |
e7c27a73 | 1694 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1695 | |
96408a79 SA |
1696 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1697 | ||
71a3c369 TT |
1698 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1699 | ||
ff013f42 | 1700 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1701 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1702 | |
3a2b436a | 1703 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1704 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1705 | enum pc_bounds_kind |
1706 | { | |
e385593e | 1707 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1708 | PC_BOUNDS_NOT_PRESENT, |
1709 | ||
e385593e JK |
1710 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1711 | were present but they do not form a valid range of PC addresses. */ | |
1712 | PC_BOUNDS_INVALID, | |
1713 | ||
3a2b436a JK |
1714 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1715 | PC_BOUNDS_RANGES, | |
1716 | ||
1717 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1718 | PC_BOUNDS_HIGH_LOW, | |
1719 | }; | |
1720 | ||
1721 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1722 | CORE_ADDR *, CORE_ADDR *, | |
1723 | struct dwarf2_cu *, | |
891813be | 1724 | dwarf2_psymtab *); |
c906108c | 1725 | |
fae299cd DC |
1726 | static void get_scope_pc_bounds (struct die_info *, |
1727 | CORE_ADDR *, CORE_ADDR *, | |
1728 | struct dwarf2_cu *); | |
1729 | ||
801e3a5b JB |
1730 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1731 | CORE_ADDR, struct dwarf2_cu *); | |
1732 | ||
a14ed312 | 1733 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1734 | struct dwarf2_cu *); |
c906108c | 1735 | |
a14ed312 | 1736 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1737 | struct type *, struct dwarf2_cu *); |
c906108c | 1738 | |
a14ed312 | 1739 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1740 | struct die_info *, struct type *, |
e7c27a73 | 1741 | struct dwarf2_cu *); |
c906108c | 1742 | |
a14ed312 | 1743 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1744 | struct type *, |
1745 | struct dwarf2_cu *); | |
c906108c | 1746 | |
134d01f1 | 1747 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1748 | |
e7c27a73 | 1749 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1750 | |
e7c27a73 | 1751 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1752 | |
5d7cb8df JK |
1753 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1754 | ||
804d2729 | 1755 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1756 | |
27aa8d6a SW |
1757 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1758 | ||
74921315 KS |
1759 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1760 | ||
f55ee35c JK |
1761 | static struct type *read_module_type (struct die_info *die, |
1762 | struct dwarf2_cu *cu); | |
1763 | ||
38d518c9 | 1764 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1765 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1766 | |
134d01f1 | 1767 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1768 | |
e7c27a73 | 1769 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1770 | |
6e70227d | 1771 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1772 | struct dwarf2_cu *); |
1773 | ||
bf6af496 | 1774 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1775 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1776 | struct die_info *); |
639d11d3 | 1777 | |
dee91e82 | 1778 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1779 | const gdb_byte *info_ptr, |
1780 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1781 | struct die_info *parent); |
1782 | ||
d521ce57 TT |
1783 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1784 | struct die_info **, const gdb_byte *, | |
1785 | int *, int); | |
3019eac3 | 1786 | |
d521ce57 TT |
1787 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1788 | struct die_info **, const gdb_byte *, | |
1789 | int *); | |
93311388 | 1790 | |
e7c27a73 | 1791 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1792 | |
15d034d0 TT |
1793 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1794 | struct obstack *); | |
71c25dea | 1795 | |
15d034d0 | 1796 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1797 | |
15d034d0 | 1798 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1799 | struct die_info *die, |
1800 | struct dwarf2_cu *cu); | |
1801 | ||
ca69b9e6 DE |
1802 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1803 | struct dwarf2_cu *cu); | |
1804 | ||
e142c38c | 1805 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1806 | struct dwarf2_cu **); |
9219021c | 1807 | |
f39c6ffd | 1808 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1809 | |
f39c6ffd | 1810 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1811 | |
a084a2a6 AT |
1812 | static const char *dwarf_unit_type_name (int unit_type); |
1813 | ||
f39c6ffd | 1814 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1815 | |
a121b7c1 | 1816 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1817 | |
f39c6ffd | 1818 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1819 | |
f9aca02d | 1820 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1821 | |
d97bc12b DE |
1822 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1823 | ||
1824 | static void dump_die_for_error (struct die_info *); | |
1825 | ||
1826 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1827 | struct die_info *); | |
c906108c | 1828 | |
d97bc12b | 1829 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1830 | |
51545339 | 1831 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1832 | struct dwarf2_cu *); |
c906108c | 1833 | |
ff39bb5e | 1834 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1835 | |
ff39bb5e | 1836 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1837 | |
348e048f | 1838 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1839 | const struct attribute *, |
348e048f DE |
1840 | struct dwarf2_cu **); |
1841 | ||
10b3939b | 1842 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1843 | const struct attribute *, |
f2f0e013 | 1844 | struct dwarf2_cu **); |
c906108c | 1845 | |
348e048f | 1846 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1847 | const struct attribute *, |
348e048f DE |
1848 | struct dwarf2_cu **); |
1849 | ||
ac9ec31b DE |
1850 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1851 | struct dwarf2_cu *); | |
1852 | ||
1853 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1854 | const struct attribute *, |
ac9ec31b DE |
1855 | struct dwarf2_cu *); |
1856 | ||
e5fe5e75 | 1857 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1858 | |
52dc124a | 1859 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1860 | |
63e43d3a PMR |
1861 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1862 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1863 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1864 | |
c906108c SS |
1865 | /* memory allocation interface */ |
1866 | ||
7b5a2f43 | 1867 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1868 | |
b60c80d6 | 1869 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1870 | |
43f3e411 | 1871 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1872 | |
6e5a29e1 | 1873 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1874 | |
6e5a29e1 | 1875 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1876 | |
6e5a29e1 | 1877 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1878 | |
6e5a29e1 | 1879 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1880 | |
8cf6f0b1 TT |
1881 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1882 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1883 | const struct attribute *attr); |
8cf6f0b1 | 1884 | |
ff39bb5e | 1885 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1886 | struct symbol *sym, |
f1e6e072 TT |
1887 | struct dwarf2_cu *cu, |
1888 | int is_block); | |
4c2df51b | 1889 | |
d521ce57 TT |
1890 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1891 | const gdb_byte *info_ptr, | |
1892 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1893 | |
72bf9492 DJ |
1894 | static hashval_t partial_die_hash (const void *item); |
1895 | ||
1896 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1897 | ||
ae038cb0 | 1898 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1899 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1900 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1901 | |
9816fde3 | 1902 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1903 | struct die_info *comp_unit_die, |
1904 | enum language pretend_language); | |
93311388 | 1905 | |
ed2dc618 | 1906 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1907 | |
dee91e82 | 1908 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1909 | |
f792889a DJ |
1910 | static struct type *set_die_type (struct die_info *, struct type *, |
1911 | struct dwarf2_cu *); | |
1c379e20 | 1912 | |
ed2dc618 | 1913 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1914 | |
ed2dc618 | 1915 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1916 | |
58f0c718 | 1917 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1918 | enum language); |
10b3939b | 1919 | |
95554aad TT |
1920 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1921 | enum language); | |
10b3939b | 1922 | |
f4dc4d17 DE |
1923 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1924 | enum language); | |
1925 | ||
10b3939b DJ |
1926 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1927 | struct dwarf2_per_cu_data *); | |
1928 | ||
ae038cb0 DJ |
1929 | static void dwarf2_mark (struct dwarf2_cu *); |
1930 | ||
1931 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1932 | ||
b64f50a1 | 1933 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1934 | struct dwarf2_per_cu_data *); |
673bfd45 | 1935 | |
f792889a | 1936 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1937 | |
95554aad TT |
1938 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1939 | enum language pretend_language); | |
1940 | ||
ed2dc618 | 1941 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1942 | |
9a49df9d AB |
1943 | static struct type *dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu); |
1944 | static struct type *dwarf2_per_cu_addr_sized_int_type | |
1945 | (struct dwarf2_per_cu_data *per_cu, bool unsigned_p); | |
11a8b164 AB |
1946 | static struct type *dwarf2_per_cu_int_type |
1947 | (struct dwarf2_per_cu_data *per_cu, int size_in_bytes, | |
1948 | bool unsigned_p); | |
9a49df9d | 1949 | |
b303c6f6 AB |
1950 | /* Class, the destructor of which frees all allocated queue entries. This |
1951 | will only have work to do if an error was thrown while processing the | |
1952 | dwarf. If no error was thrown then the queue entries should have all | |
1953 | been processed, and freed, as we went along. */ | |
1954 | ||
1955 | class dwarf2_queue_guard | |
1956 | { | |
1957 | public: | |
1958 | dwarf2_queue_guard () = default; | |
1959 | ||
1960 | /* Free any entries remaining on the queue. There should only be | |
1961 | entries left if we hit an error while processing the dwarf. */ | |
1962 | ~dwarf2_queue_guard () | |
1963 | { | |
1964 | struct dwarf2_queue_item *item, *last; | |
1965 | ||
1966 | item = dwarf2_queue; | |
1967 | while (item) | |
1968 | { | |
1969 | /* Anything still marked queued is likely to be in an | |
1970 | inconsistent state, so discard it. */ | |
1971 | if (item->per_cu->queued) | |
1972 | { | |
1973 | if (item->per_cu->cu != NULL) | |
1974 | free_one_cached_comp_unit (item->per_cu); | |
1975 | item->per_cu->queued = 0; | |
1976 | } | |
1977 | ||
1978 | last = item; | |
1979 | item = item->next; | |
1980 | xfree (last); | |
1981 | } | |
1982 | ||
1983 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1984 | } | |
1985 | }; | |
1986 | ||
d721ba37 PA |
1987 | /* The return type of find_file_and_directory. Note, the enclosed |
1988 | string pointers are only valid while this object is valid. */ | |
1989 | ||
1990 | struct file_and_directory | |
1991 | { | |
1992 | /* The filename. This is never NULL. */ | |
1993 | const char *name; | |
1994 | ||
1995 | /* The compilation directory. NULL if not known. If we needed to | |
1996 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1997 | points directly to the DW_AT_comp_dir string attribute owned by | |
1998 | the obstack that owns the DIE. */ | |
1999 | const char *comp_dir; | |
2000 | ||
2001 | /* If we needed to build a new string for comp_dir, this is what | |
2002 | owns the storage. */ | |
2003 | std::string comp_dir_storage; | |
2004 | }; | |
2005 | ||
2006 | static file_and_directory find_file_and_directory (struct die_info *die, | |
2007 | struct dwarf2_cu *cu); | |
9291a0cd TT |
2008 | |
2009 | static char *file_full_name (int file, struct line_header *lh, | |
2010 | const char *comp_dir); | |
2011 | ||
43988095 JK |
2012 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
2013 | enum class rcuh_kind { COMPILE, TYPE }; | |
2014 | ||
d521ce57 | 2015 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
2016 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
2017 | struct comp_unit_head *header, | |
36586728 | 2018 | struct dwarf2_section_info *section, |
d521ce57 | 2019 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 2020 | rcuh_kind section_kind); |
36586728 | 2021 | |
673bfd45 | 2022 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2023 | |
3019eac3 DE |
2024 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2025 | ||
57d63ce2 | 2026 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
2027 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2028 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 2029 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 2030 | |
ed2dc618 SM |
2031 | static struct dwp_file *get_dwp_file |
2032 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 2033 | |
3019eac3 | 2034 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2035 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2036 | |
2037 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2038 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2039 | |
89e63ee4 DE |
2040 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2041 | ||
263db9a1 TT |
2042 | /* A unique pointer to a dwo_file. */ |
2043 | ||
51ac9db5 | 2044 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 2045 | |
ed2dc618 | 2046 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 2047 | |
1b80a9fa | 2048 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2049 | |
2050 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2051 | \f |
2052 | /* Various complaints about symbol reading that don't abort the process. */ | |
2053 | ||
2054 | static void | |
2055 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2056 | { | |
b98664d3 | 2057 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2058 | } |
2059 | ||
2060 | static void | |
2061 | dwarf2_debug_line_missing_file_complaint (void) | |
2062 | { | |
b98664d3 | 2063 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2064 | } |
2065 | ||
2066 | static void | |
2067 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2068 | { | |
b98664d3 | 2069 | complaint (_(".debug_line section has line " |
4390d890 DE |
2070 | "program sequence without an end")); |
2071 | } | |
2072 | ||
2073 | static void | |
2074 | dwarf2_complex_location_expr_complaint (void) | |
2075 | { | |
b98664d3 | 2076 | complaint (_("location expression too complex")); |
4390d890 DE |
2077 | } |
2078 | ||
2079 | static void | |
2080 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2081 | int arg3) | |
2082 | { | |
b98664d3 | 2083 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2084 | arg1, arg2, arg3); |
2085 | } | |
2086 | ||
2087 | static void | |
2088 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2089 | { | |
b98664d3 | 2090 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2091 | " [in module %s]"), |
a32a8923 DE |
2092 | get_section_name (section), |
2093 | get_section_file_name (section)); | |
4390d890 | 2094 | } |
1b80a9fa | 2095 | |
4390d890 DE |
2096 | static void |
2097 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2098 | { | |
b98664d3 | 2099 | complaint (_("macro debug info contains a " |
4390d890 DE |
2100 | "malformed macro definition:\n`%s'"), |
2101 | arg1); | |
2102 | } | |
2103 | ||
2104 | static void | |
2105 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2106 | { | |
b98664d3 | 2107 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2108 | arg1, arg2); |
2109 | } | |
527f3840 JK |
2110 | |
2111 | /* Hash function for line_header_hash. */ | |
2112 | ||
2113 | static hashval_t | |
2114 | line_header_hash (const struct line_header *ofs) | |
2115 | { | |
9c541725 | 2116 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2117 | } |
2118 | ||
2119 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2120 | ||
2121 | static hashval_t | |
2122 | line_header_hash_voidp (const void *item) | |
2123 | { | |
9a3c8263 | 2124 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2125 | |
2126 | return line_header_hash (ofs); | |
2127 | } | |
2128 | ||
2129 | /* Equality function for line_header_hash. */ | |
2130 | ||
2131 | static int | |
2132 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2133 | { | |
9a3c8263 SM |
2134 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2135 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2136 | |
9c541725 | 2137 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2138 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2139 | } | |
2140 | ||
4390d890 | 2141 | \f |
9291a0cd | 2142 | |
31aa7e4e JB |
2143 | /* Read the given attribute value as an address, taking the attribute's |
2144 | form into account. */ | |
2145 | ||
2146 | static CORE_ADDR | |
2147 | attr_value_as_address (struct attribute *attr) | |
2148 | { | |
2149 | CORE_ADDR addr; | |
2150 | ||
336d760d AT |
2151 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_addrx |
2152 | && attr->form != DW_FORM_GNU_addr_index) | |
31aa7e4e JB |
2153 | { |
2154 | /* Aside from a few clearly defined exceptions, attributes that | |
2155 | contain an address must always be in DW_FORM_addr form. | |
2156 | Unfortunately, some compilers happen to be violating this | |
2157 | requirement by encoding addresses using other forms, such | |
2158 | as DW_FORM_data4 for example. For those broken compilers, | |
2159 | we try to do our best, without any guarantee of success, | |
2160 | to interpret the address correctly. It would also be nice | |
2161 | to generate a complaint, but that would require us to maintain | |
2162 | a list of legitimate cases where a non-address form is allowed, | |
2163 | as well as update callers to pass in at least the CU's DWARF | |
2164 | version. This is more overhead than what we're willing to | |
2165 | expand for a pretty rare case. */ | |
2166 | addr = DW_UNSND (attr); | |
2167 | } | |
2168 | else | |
2169 | addr = DW_ADDR (attr); | |
2170 | ||
2171 | return addr; | |
2172 | } | |
2173 | ||
330cdd98 PA |
2174 | /* See declaration. */ |
2175 | ||
2176 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
2177 | const dwarf2_debug_sections *names, |
2178 | bool can_copy_) | |
2179 | : objfile (objfile_), | |
2180 | can_copy (can_copy_) | |
330cdd98 PA |
2181 | { |
2182 | if (names == NULL) | |
2183 | names = &dwarf2_elf_names; | |
2184 | ||
2185 | bfd *obfd = objfile->obfd; | |
2186 | ||
2187 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2188 | locate_sections (obfd, sec, *names); | |
2189 | } | |
2190 | ||
2191 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
2192 | { | |
2193 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2194 | free_cached_comp_units (); | |
2195 | ||
2196 | if (quick_file_names_table) | |
2197 | htab_delete (quick_file_names_table); | |
2198 | ||
2199 | if (line_header_hash) | |
2200 | htab_delete (line_header_hash); | |
2201 | ||
b76e467d | 2202 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 2203 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 2204 | |
b2bdb8cf | 2205 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 2206 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 2207 | |
330cdd98 PA |
2208 | /* Everything else should be on the objfile obstack. */ |
2209 | } | |
2210 | ||
2211 | /* See declaration. */ | |
2212 | ||
2213 | void | |
2214 | dwarf2_per_objfile::free_cached_comp_units () | |
2215 | { | |
2216 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2217 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2218 | while (per_cu != NULL) | |
2219 | { | |
2220 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2221 | ||
fcd3b13d | 2222 | delete per_cu->cu; |
330cdd98 PA |
2223 | *last_chain = next_cu; |
2224 | per_cu = next_cu; | |
2225 | } | |
2226 | } | |
2227 | ||
11ed8cad TT |
2228 | /* A helper class that calls free_cached_comp_units on |
2229 | destruction. */ | |
2230 | ||
2231 | class free_cached_comp_units | |
2232 | { | |
2233 | public: | |
2234 | ||
2235 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2236 | : m_per_objfile (per_objfile) | |
2237 | { | |
2238 | } | |
2239 | ||
2240 | ~free_cached_comp_units () | |
2241 | { | |
2242 | m_per_objfile->free_cached_comp_units (); | |
2243 | } | |
2244 | ||
2245 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2246 | ||
2247 | private: | |
2248 | ||
2249 | dwarf2_per_objfile *m_per_objfile; | |
2250 | }; | |
2251 | ||
c906108c | 2252 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2253 | information and return true if we have enough to do something. |
2254 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
2255 | ELF names are used. CAN_COPY is true for formats where symbol |
2256 | interposition is possible and so symbol values must follow copy | |
2257 | relocation rules. */ | |
c906108c SS |
2258 | |
2259 | int | |
251d32d9 | 2260 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
2261 | const struct dwarf2_debug_sections *names, |
2262 | bool can_copy) | |
c906108c | 2263 | { |
97cbe998 SDJ |
2264 | if (objfile->flags & OBJF_READNEVER) |
2265 | return 0; | |
2266 | ||
ed2dc618 SM |
2267 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2268 | = get_dwarf2_per_objfile (objfile); | |
2269 | ||
2270 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 2271 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
2272 | names, |
2273 | can_copy); | |
5bfd760d | 2274 | |
73869dc2 | 2275 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2276 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2277 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2278 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2279 | } |
2280 | ||
2281 | /* Return the containing section of virtual section SECTION. */ | |
2282 | ||
2283 | static struct dwarf2_section_info * | |
2284 | get_containing_section (const struct dwarf2_section_info *section) | |
2285 | { | |
2286 | gdb_assert (section->is_virtual); | |
2287 | return section->s.containing_section; | |
c906108c SS |
2288 | } |
2289 | ||
a32a8923 DE |
2290 | /* Return the bfd owner of SECTION. */ |
2291 | ||
2292 | static struct bfd * | |
2293 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2294 | { | |
73869dc2 DE |
2295 | if (section->is_virtual) |
2296 | { | |
2297 | section = get_containing_section (section); | |
2298 | gdb_assert (!section->is_virtual); | |
2299 | } | |
049412e3 | 2300 | return section->s.section->owner; |
a32a8923 DE |
2301 | } |
2302 | ||
2303 | /* Return the bfd section of SECTION. | |
2304 | Returns NULL if the section is not present. */ | |
2305 | ||
2306 | static asection * | |
2307 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2308 | { | |
73869dc2 DE |
2309 | if (section->is_virtual) |
2310 | { | |
2311 | section = get_containing_section (section); | |
2312 | gdb_assert (!section->is_virtual); | |
2313 | } | |
049412e3 | 2314 | return section->s.section; |
a32a8923 DE |
2315 | } |
2316 | ||
2317 | /* Return the name of SECTION. */ | |
2318 | ||
2319 | static const char * | |
2320 | get_section_name (const struct dwarf2_section_info *section) | |
2321 | { | |
2322 | asection *sectp = get_section_bfd_section (section); | |
2323 | ||
2324 | gdb_assert (sectp != NULL); | |
fd361982 | 2325 | return bfd_section_name (sectp); |
a32a8923 DE |
2326 | } |
2327 | ||
2328 | /* Return the name of the file SECTION is in. */ | |
2329 | ||
2330 | static const char * | |
2331 | get_section_file_name (const struct dwarf2_section_info *section) | |
2332 | { | |
2333 | bfd *abfd = get_section_bfd_owner (section); | |
2334 | ||
2335 | return bfd_get_filename (abfd); | |
2336 | } | |
2337 | ||
2338 | /* Return the id of SECTION. | |
2339 | Returns 0 if SECTION doesn't exist. */ | |
2340 | ||
2341 | static int | |
2342 | get_section_id (const struct dwarf2_section_info *section) | |
2343 | { | |
2344 | asection *sectp = get_section_bfd_section (section); | |
2345 | ||
2346 | if (sectp == NULL) | |
2347 | return 0; | |
2348 | return sectp->id; | |
2349 | } | |
2350 | ||
2351 | /* Return the flags of SECTION. | |
73869dc2 | 2352 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2353 | |
2354 | static int | |
2355 | get_section_flags (const struct dwarf2_section_info *section) | |
2356 | { | |
2357 | asection *sectp = get_section_bfd_section (section); | |
2358 | ||
2359 | gdb_assert (sectp != NULL); | |
fd361982 | 2360 | return bfd_section_flags (sectp); |
a32a8923 DE |
2361 | } |
2362 | ||
251d32d9 TG |
2363 | /* When loading sections, we look either for uncompressed section or for |
2364 | compressed section names. */ | |
233a11ab CS |
2365 | |
2366 | static int | |
251d32d9 TG |
2367 | section_is_p (const char *section_name, |
2368 | const struct dwarf2_section_names *names) | |
233a11ab | 2369 | { |
251d32d9 TG |
2370 | if (names->normal != NULL |
2371 | && strcmp (section_name, names->normal) == 0) | |
2372 | return 1; | |
2373 | if (names->compressed != NULL | |
2374 | && strcmp (section_name, names->compressed) == 0) | |
2375 | return 1; | |
2376 | return 0; | |
233a11ab CS |
2377 | } |
2378 | ||
330cdd98 | 2379 | /* See declaration. */ |
c906108c | 2380 | |
330cdd98 PA |
2381 | void |
2382 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2383 | const dwarf2_debug_sections &names) | |
c906108c | 2384 | { |
fd361982 | 2385 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2386 | |
dc7650b8 JK |
2387 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2388 | { | |
2389 | } | |
950b7495 KS |
2390 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2391 | > bfd_get_file_size (abfd)) | |
2392 | { | |
2393 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2394 | warning (_("Discarding section %s which has a section size (%s" | |
2395 | ") larger than the file size [in module %s]"), | |
2396 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2397 | bfd_get_filename (abfd)); | |
2398 | } | |
330cdd98 | 2399 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2400 | { |
330cdd98 | 2401 | this->info.s.section = sectp; |
fd361982 | 2402 | this->info.size = bfd_section_size (sectp); |
c906108c | 2403 | } |
330cdd98 | 2404 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2405 | { |
330cdd98 | 2406 | this->abbrev.s.section = sectp; |
fd361982 | 2407 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2408 | } |
330cdd98 | 2409 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2410 | { |
330cdd98 | 2411 | this->line.s.section = sectp; |
fd361982 | 2412 | this->line.size = bfd_section_size (sectp); |
c906108c | 2413 | } |
330cdd98 | 2414 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2415 | { |
330cdd98 | 2416 | this->loc.s.section = sectp; |
fd361982 | 2417 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2418 | } |
330cdd98 | 2419 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2420 | { |
330cdd98 | 2421 | this->loclists.s.section = sectp; |
fd361982 | 2422 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2423 | } |
330cdd98 | 2424 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2425 | { |
330cdd98 | 2426 | this->macinfo.s.section = sectp; |
fd361982 | 2427 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2428 | } |
330cdd98 | 2429 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2430 | { |
330cdd98 | 2431 | this->macro.s.section = sectp; |
fd361982 | 2432 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2433 | } |
330cdd98 | 2434 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2435 | { |
330cdd98 | 2436 | this->str.s.section = sectp; |
fd361982 | 2437 | this->str.size = bfd_section_size (sectp); |
c906108c | 2438 | } |
18a8505e AT |
2439 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2440 | { | |
2441 | this->str_offsets.s.section = sectp; | |
2442 | this->str_offsets.size = bfd_section_size (sectp); | |
2443 | } | |
330cdd98 | 2444 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2445 | { |
330cdd98 | 2446 | this->line_str.s.section = sectp; |
fd361982 | 2447 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2448 | } |
330cdd98 | 2449 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2450 | { |
330cdd98 | 2451 | this->addr.s.section = sectp; |
fd361982 | 2452 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2453 | } |
330cdd98 | 2454 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2455 | { |
330cdd98 | 2456 | this->frame.s.section = sectp; |
fd361982 | 2457 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2458 | } |
330cdd98 | 2459 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2460 | { |
330cdd98 | 2461 | this->eh_frame.s.section = sectp; |
fd361982 | 2462 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2463 | } |
330cdd98 | 2464 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2465 | { |
330cdd98 | 2466 | this->ranges.s.section = sectp; |
fd361982 | 2467 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2468 | } |
330cdd98 | 2469 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2470 | { |
330cdd98 | 2471 | this->rnglists.s.section = sectp; |
fd361982 | 2472 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2473 | } |
330cdd98 | 2474 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2475 | { |
8b70b953 TT |
2476 | struct dwarf2_section_info type_section; |
2477 | ||
2478 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2479 | type_section.s.section = sectp; |
fd361982 | 2480 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2481 | |
fd5866f6 | 2482 | this->types.push_back (type_section); |
348e048f | 2483 | } |
330cdd98 | 2484 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2485 | { |
330cdd98 | 2486 | this->gdb_index.s.section = sectp; |
fd361982 | 2487 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2488 | } |
927aa2e7 JK |
2489 | else if (section_is_p (sectp->name, &names.debug_names)) |
2490 | { | |
2491 | this->debug_names.s.section = sectp; | |
fd361982 | 2492 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2493 | } |
2494 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2495 | { | |
2496 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2497 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2498 | } |
dce234bc | 2499 | |
fd361982 AM |
2500 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2501 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2502 | this->has_section_at_zero = true; |
c906108c SS |
2503 | } |
2504 | ||
fceca515 DE |
2505 | /* A helper function that decides whether a section is empty, |
2506 | or not present. */ | |
9e0ac564 TT |
2507 | |
2508 | static int | |
19ac8c2e | 2509 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2510 | { |
73869dc2 DE |
2511 | if (section->is_virtual) |
2512 | return section->size == 0; | |
049412e3 | 2513 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2514 | } |
2515 | ||
cd4fb1b2 | 2516 | /* See dwarf2read.h. */ |
c906108c | 2517 | |
cd4fb1b2 SM |
2518 | void |
2519 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2520 | { |
a32a8923 | 2521 | asection *sectp; |
3019eac3 | 2522 | bfd *abfd; |
dce234bc | 2523 | gdb_byte *buf, *retbuf; |
c906108c | 2524 | |
be391dca TT |
2525 | if (info->readin) |
2526 | return; | |
dce234bc | 2527 | info->buffer = NULL; |
dc4ccb6f | 2528 | info->readin = true; |
188dd5d6 | 2529 | |
9e0ac564 | 2530 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2531 | return; |
c906108c | 2532 | |
a32a8923 | 2533 | sectp = get_section_bfd_section (info); |
3019eac3 | 2534 | |
73869dc2 DE |
2535 | /* If this is a virtual section we need to read in the real one first. */ |
2536 | if (info->is_virtual) | |
2537 | { | |
2538 | struct dwarf2_section_info *containing_section = | |
2539 | get_containing_section (info); | |
2540 | ||
2541 | gdb_assert (sectp != NULL); | |
2542 | if ((sectp->flags & SEC_RELOC) != 0) | |
2543 | { | |
2544 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2545 | " supported in section %s [in module %s]"), | |
2546 | get_section_name (info), get_section_file_name (info)); | |
2547 | } | |
2548 | dwarf2_read_section (objfile, containing_section); | |
2549 | /* Other code should have already caught virtual sections that don't | |
2550 | fit. */ | |
2551 | gdb_assert (info->virtual_offset + info->size | |
2552 | <= containing_section->size); | |
2553 | /* If the real section is empty or there was a problem reading the | |
2554 | section we shouldn't get here. */ | |
2555 | gdb_assert (containing_section->buffer != NULL); | |
2556 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2557 | return; | |
2558 | } | |
2559 | ||
4bf44c1c TT |
2560 | /* If the section has relocations, we must read it ourselves. |
2561 | Otherwise we attach it to the BFD. */ | |
2562 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2563 | { |
d521ce57 | 2564 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2565 | return; |
dce234bc | 2566 | } |
dce234bc | 2567 | |
224c3ddb | 2568 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2569 | info->buffer = buf; |
dce234bc PP |
2570 | |
2571 | /* When debugging .o files, we may need to apply relocations; see | |
2572 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2573 | We never compress sections in .o files, so we only need to | |
2574 | try this when the section is not compressed. */ | |
ac8035ab | 2575 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2576 | if (retbuf != NULL) |
2577 | { | |
2578 | info->buffer = retbuf; | |
2579 | return; | |
2580 | } | |
2581 | ||
a32a8923 DE |
2582 | abfd = get_section_bfd_owner (info); |
2583 | gdb_assert (abfd != NULL); | |
2584 | ||
dce234bc PP |
2585 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2586 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2587 | { |
2588 | error (_("Dwarf Error: Can't read DWARF data" | |
2589 | " in section %s [in module %s]"), | |
fd361982 | 2590 | bfd_section_name (sectp), bfd_get_filename (abfd)); |
19ac8c2e | 2591 | } |
dce234bc PP |
2592 | } |
2593 | ||
9e0ac564 TT |
2594 | /* A helper function that returns the size of a section in a safe way. |
2595 | If you are positive that the section has been read before using the | |
2596 | size, then it is safe to refer to the dwarf2_section_info object's | |
2597 | "size" field directly. In other cases, you must call this | |
2598 | function, because for compressed sections the size field is not set | |
2599 | correctly until the section has been read. */ | |
2600 | ||
2601 | static bfd_size_type | |
2602 | dwarf2_section_size (struct objfile *objfile, | |
2603 | struct dwarf2_section_info *info) | |
2604 | { | |
2605 | if (!info->readin) | |
2606 | dwarf2_read_section (objfile, info); | |
2607 | return info->size; | |
2608 | } | |
2609 | ||
dce234bc | 2610 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2611 | SECTION_NAME. */ |
af34e669 | 2612 | |
dce234bc | 2613 | void |
3017a003 TG |
2614 | dwarf2_get_section_info (struct objfile *objfile, |
2615 | enum dwarf2_section_enum sect, | |
d521ce57 | 2616 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2617 | bfd_size_type *sizep) |
2618 | { | |
5bfd760d | 2619 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2620 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2621 | |
2622 | /* We may see an objfile without any DWARF, in which case we just | |
2623 | return nothing. */ | |
2624 | if (data == NULL) | |
2625 | { | |
2626 | *sectp = NULL; | |
2627 | *bufp = NULL; | |
2628 | *sizep = 0; | |
2629 | return; | |
2630 | } | |
3017a003 TG |
2631 | switch (sect) |
2632 | { | |
2633 | case DWARF2_DEBUG_FRAME: | |
2634 | info = &data->frame; | |
2635 | break; | |
2636 | case DWARF2_EH_FRAME: | |
2637 | info = &data->eh_frame; | |
2638 | break; | |
2639 | default: | |
2640 | gdb_assert_not_reached ("unexpected section"); | |
2641 | } | |
dce234bc | 2642 | |
9e0ac564 | 2643 | dwarf2_read_section (objfile, info); |
dce234bc | 2644 | |
a32a8923 | 2645 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2646 | *bufp = info->buffer; |
2647 | *sizep = info->size; | |
2648 | } | |
2649 | ||
36586728 TT |
2650 | /* A helper function to find the sections for a .dwz file. */ |
2651 | ||
2652 | static void | |
2653 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2654 | { | |
9a3c8263 | 2655 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2656 | |
2657 | /* Note that we only support the standard ELF names, because .dwz | |
2658 | is ELF-only (at the time of writing). */ | |
2659 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2660 | { | |
049412e3 | 2661 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2662 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2663 | } |
2664 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2665 | { | |
049412e3 | 2666 | dwz_file->info.s.section = sectp; |
fd361982 | 2667 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2668 | } |
2669 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2670 | { | |
049412e3 | 2671 | dwz_file->str.s.section = sectp; |
fd361982 | 2672 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2673 | } |
2674 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2675 | { | |
049412e3 | 2676 | dwz_file->line.s.section = sectp; |
fd361982 | 2677 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2678 | } |
2679 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2680 | { | |
049412e3 | 2681 | dwz_file->macro.s.section = sectp; |
fd361982 | 2682 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2683 | } |
2ec9a5e0 TT |
2684 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2685 | { | |
049412e3 | 2686 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2687 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2688 | } |
927aa2e7 JK |
2689 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2690 | { | |
2691 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2692 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2693 | } |
36586728 TT |
2694 | } |
2695 | ||
c4973306 | 2696 | /* See dwarf2read.h. */ |
36586728 | 2697 | |
c4973306 | 2698 | struct dwz_file * |
ed2dc618 | 2699 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2700 | { |
36586728 | 2701 | const char *filename; |
acd13123 | 2702 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2703 | size_t buildid_len; |
2704 | bfd_byte *buildid; | |
36586728 TT |
2705 | |
2706 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2707 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2708 | |
4db1a1dc | 2709 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2710 | gdb::unique_xmalloc_ptr<char> data |
2711 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2712 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2713 | if (data == NULL) |
2714 | { | |
2715 | if (bfd_get_error () == bfd_error_no_error) | |
2716 | return NULL; | |
2717 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2718 | bfd_errmsg (bfd_get_error ())); | |
2719 | } | |
791afaa2 TT |
2720 | |
2721 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2722 | |
acd13123 TT |
2723 | buildid_len = (size_t) buildid_len_arg; |
2724 | ||
791afaa2 | 2725 | filename = data.get (); |
d721ba37 PA |
2726 | |
2727 | std::string abs_storage; | |
36586728 TT |
2728 | if (!IS_ABSOLUTE_PATH (filename)) |
2729 | { | |
14278e1f TT |
2730 | gdb::unique_xmalloc_ptr<char> abs |
2731 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2732 | |
14278e1f | 2733 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2734 | filename = abs_storage.c_str (); |
36586728 TT |
2735 | } |
2736 | ||
dc294be5 TT |
2737 | /* First try the file name given in the section. If that doesn't |
2738 | work, try to use the build-id instead. */ | |
192b62ce | 2739 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2740 | if (dwz_bfd != NULL) |
36586728 | 2741 | { |
192b62ce | 2742 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2743 | dwz_bfd.reset (nullptr); |
36586728 TT |
2744 | } |
2745 | ||
dc294be5 TT |
2746 | if (dwz_bfd == NULL) |
2747 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2748 | ||
2749 | if (dwz_bfd == NULL) | |
2750 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2751 | objfile_name (dwarf2_per_objfile->objfile)); | |
2752 | ||
7ff8cb8c TT |
2753 | std::unique_ptr<struct dwz_file> result |
2754 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2755 | |
7ff8cb8c TT |
2756 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2757 | result.get ()); | |
36586728 | 2758 | |
7ff8cb8c TT |
2759 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2760 | result->dwz_bfd.get ()); | |
2761 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2762 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2763 | } |
9291a0cd | 2764 | \f |
7b9f3c50 DE |
2765 | /* DWARF quick_symbols_functions support. */ |
2766 | ||
2767 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2768 | unique line tables, so we maintain a separate table of all .debug_line | |
2769 | derived entries to support the sharing. | |
2770 | All the quick functions need is the list of file names. We discard the | |
2771 | line_header when we're done and don't need to record it here. */ | |
2772 | struct quick_file_names | |
2773 | { | |
094b34ac DE |
2774 | /* The data used to construct the hash key. */ |
2775 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2776 | |
2777 | /* The number of entries in file_names, real_names. */ | |
2778 | unsigned int num_file_names; | |
2779 | ||
2780 | /* The file names from the line table, after being run through | |
2781 | file_full_name. */ | |
2782 | const char **file_names; | |
2783 | ||
2784 | /* The file names from the line table after being run through | |
2785 | gdb_realpath. These are computed lazily. */ | |
2786 | const char **real_names; | |
2787 | }; | |
2788 | ||
2789 | /* When using the index (and thus not using psymtabs), each CU has an | |
2790 | object of this type. This is used to hold information needed by | |
2791 | the various "quick" methods. */ | |
2792 | struct dwarf2_per_cu_quick_data | |
2793 | { | |
2794 | /* The file table. This can be NULL if there was no file table | |
2795 | or it's currently not read in. | |
2796 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2797 | struct quick_file_names *file_names; | |
2798 | ||
2799 | /* The corresponding symbol table. This is NULL if symbols for this | |
2800 | CU have not yet been read. */ | |
43f3e411 | 2801 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2802 | |
2803 | /* A temporary mark bit used when iterating over all CUs in | |
2804 | expand_symtabs_matching. */ | |
2805 | unsigned int mark : 1; | |
2806 | ||
2807 | /* True if we've tried to read the file table and found there isn't one. | |
2808 | There will be no point in trying to read it again next time. */ | |
2809 | unsigned int no_file_data : 1; | |
2810 | }; | |
2811 | ||
094b34ac DE |
2812 | /* Utility hash function for a stmt_list_hash. */ |
2813 | ||
2814 | static hashval_t | |
2815 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2816 | { | |
2817 | hashval_t v = 0; | |
2818 | ||
2819 | if (stmt_list_hash->dwo_unit != NULL) | |
2820 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2821 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2822 | return v; |
2823 | } | |
2824 | ||
2825 | /* Utility equality function for a stmt_list_hash. */ | |
2826 | ||
2827 | static int | |
2828 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2829 | const struct stmt_list_hash *rhs) | |
2830 | { | |
2831 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2832 | return 0; | |
2833 | if (lhs->dwo_unit != NULL | |
2834 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2835 | return 0; | |
2836 | ||
9c541725 | 2837 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2838 | } |
2839 | ||
7b9f3c50 DE |
2840 | /* Hash function for a quick_file_names. */ |
2841 | ||
2842 | static hashval_t | |
2843 | hash_file_name_entry (const void *e) | |
2844 | { | |
9a3c8263 SM |
2845 | const struct quick_file_names *file_data |
2846 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2847 | |
094b34ac | 2848 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2849 | } |
2850 | ||
2851 | /* Equality function for a quick_file_names. */ | |
2852 | ||
2853 | static int | |
2854 | eq_file_name_entry (const void *a, const void *b) | |
2855 | { | |
9a3c8263 SM |
2856 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2857 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2858 | |
094b34ac | 2859 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2860 | } |
2861 | ||
2862 | /* Delete function for a quick_file_names. */ | |
2863 | ||
2864 | static void | |
2865 | delete_file_name_entry (void *e) | |
2866 | { | |
9a3c8263 | 2867 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2868 | int i; |
2869 | ||
2870 | for (i = 0; i < file_data->num_file_names; ++i) | |
2871 | { | |
2872 | xfree ((void*) file_data->file_names[i]); | |
2873 | if (file_data->real_names) | |
2874 | xfree ((void*) file_data->real_names[i]); | |
2875 | } | |
2876 | ||
2877 | /* The space for the struct itself lives on objfile_obstack, | |
2878 | so we don't free it here. */ | |
2879 | } | |
2880 | ||
2881 | /* Create a quick_file_names hash table. */ | |
2882 | ||
2883 | static htab_t | |
2884 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2885 | { | |
2886 | return htab_create_alloc (nr_initial_entries, | |
2887 | hash_file_name_entry, eq_file_name_entry, | |
2888 | delete_file_name_entry, xcalloc, xfree); | |
2889 | } | |
9291a0cd | 2890 | |
918dd910 JK |
2891 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2892 | have to be created afterwards. You should call age_cached_comp_units after | |
2893 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2894 | ||
2895 | static void | |
58f0c718 | 2896 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2897 | { |
3019eac3 | 2898 | if (per_cu->is_debug_types) |
e5fe5e75 | 2899 | load_full_type_unit (per_cu); |
918dd910 | 2900 | else |
58f0c718 | 2901 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2902 | |
cc12ce38 DE |
2903 | if (per_cu->cu == NULL) |
2904 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2905 | |
2906 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2907 | } |
2908 | ||
a0f42c21 | 2909 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2910 | |
9291a0cd | 2911 | static void |
58f0c718 | 2912 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2913 | { |
ed2dc618 | 2914 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2915 | |
f4dc4d17 DE |
2916 | /* Skip type_unit_groups, reading the type units they contain |
2917 | is handled elsewhere. */ | |
2918 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2919 | return; | |
2920 | ||
b303c6f6 AB |
2921 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2922 | the queue. After this point we're guaranteed to leave this function | |
2923 | with the dwarf queue empty. */ | |
2924 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2925 | |
95554aad | 2926 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2927 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2928 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2929 | { | |
2930 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2931 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2932 | |
2933 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2934 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2935 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2936 | if (!per_cu->is_debug_types | |
cc12ce38 | 2937 | && per_cu->cu != NULL |
89e63ee4 DE |
2938 | && per_cu->cu->dwo_unit != NULL |
2939 | && dwarf2_per_objfile->index_table != NULL | |
2940 | && dwarf2_per_objfile->index_table->version <= 7 | |
2941 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2942 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2943 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2944 | } |
9291a0cd | 2945 | |
ed2dc618 | 2946 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2947 | |
2948 | /* Age the cache, releasing compilation units that have not | |
2949 | been used recently. */ | |
ed2dc618 | 2950 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2951 | } |
2952 | ||
2953 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2954 | the objfile from which this CU came. Returns the resulting symbol | |
2955 | table. */ | |
2fdf6df6 | 2956 | |
43f3e411 | 2957 | static struct compunit_symtab * |
58f0c718 | 2958 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2959 | { |
ed2dc618 SM |
2960 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2961 | ||
95554aad | 2962 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2963 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2964 | { |
11ed8cad | 2965 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2966 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2967 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2968 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2969 | } |
f194fefb | 2970 | |
43f3e411 | 2971 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2972 | } |
2973 | ||
ff4c9fec | 2974 | /* See declaration. */ |
f4dc4d17 | 2975 | |
ff4c9fec SM |
2976 | dwarf2_per_cu_data * |
2977 | dwarf2_per_objfile::get_cutu (int index) | |
2978 | { | |
b76e467d | 2979 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2980 | { |
b76e467d | 2981 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2982 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2983 | return &this->all_type_units[index]->per_cu; |
2984 | } | |
f4dc4d17 | 2985 | |
ff4c9fec SM |
2986 | return this->all_comp_units[index]; |
2987 | } | |
f4dc4d17 | 2988 | |
ff4c9fec | 2989 | /* See declaration. */ |
2fdf6df6 | 2990 | |
ff4c9fec SM |
2991 | dwarf2_per_cu_data * |
2992 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2993 | { |
b76e467d | 2994 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2995 | |
ff4c9fec | 2996 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2997 | } |
2998 | ||
ff4c9fec | 2999 | /* See declaration. */ |
f4dc4d17 | 3000 | |
ff4c9fec SM |
3001 | signatured_type * |
3002 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 3003 | { |
b2bdb8cf | 3004 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 3005 | |
ff4c9fec | 3006 | return this->all_type_units[index]; |
1fd400ff TT |
3007 | } |
3008 | ||
4b514bc8 JK |
3009 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
3010 | objfile_obstack, and constructed with the specified field | |
3011 | values. */ | |
3012 | ||
3013 | static dwarf2_per_cu_data * | |
ed2dc618 | 3014 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
3015 | struct dwarf2_section_info *section, |
3016 | int is_dwz, | |
3017 | sect_offset sect_off, ULONGEST length) | |
3018 | { | |
ed2dc618 | 3019 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
3020 | dwarf2_per_cu_data *the_cu |
3021 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3022 | struct dwarf2_per_cu_data); | |
3023 | the_cu->sect_off = sect_off; | |
3024 | the_cu->length = length; | |
e3b94546 | 3025 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
3026 | the_cu->section = section; |
3027 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3028 | struct dwarf2_per_cu_quick_data); | |
3029 | the_cu->is_dwz = is_dwz; | |
3030 | return the_cu; | |
3031 | } | |
3032 | ||
2ec9a5e0 TT |
3033 | /* A helper for create_cus_from_index that handles a given list of |
3034 | CUs. */ | |
2fdf6df6 | 3035 | |
74a0d9f6 | 3036 | static void |
12359b5e | 3037 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3038 | const gdb_byte *cu_list, offset_type n_elements, |
3039 | struct dwarf2_section_info *section, | |
b76e467d | 3040 | int is_dwz) |
9291a0cd | 3041 | { |
12359b5e | 3042 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 3043 | { |
74a0d9f6 | 3044 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3045 | |
3046 | sect_offset sect_off | |
3047 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3048 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3049 | cu_list += 2 * 8; |
3050 | ||
b76e467d | 3051 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
3052 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3053 | sect_off, length); | |
b76e467d | 3054 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 3055 | } |
9291a0cd TT |
3056 | } |
3057 | ||
2ec9a5e0 | 3058 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3059 | the CU objects for this objfile. */ |
2ec9a5e0 | 3060 | |
74a0d9f6 | 3061 | static void |
12359b5e | 3062 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3063 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3064 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3065 | { | |
b76e467d SM |
3066 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3067 | dwarf2_per_objfile->all_comp_units.reserve | |
3068 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3069 | |
12359b5e | 3070 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3071 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3072 | |
3073 | if (dwz_elements == 0) | |
74a0d9f6 | 3074 | return; |
2ec9a5e0 | 3075 | |
12359b5e SM |
3076 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3077 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3078 | &dwz->info, 1); |
2ec9a5e0 TT |
3079 | } |
3080 | ||
1fd400ff | 3081 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3082 | |
74a0d9f6 | 3083 | static void |
12359b5e SM |
3084 | create_signatured_type_table_from_index |
3085 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3086 | struct dwarf2_section_info *section, | |
3087 | const gdb_byte *bytes, | |
3088 | offset_type elements) | |
1fd400ff | 3089 | { |
12359b5e | 3090 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3091 | |
b2bdb8cf SM |
3092 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3093 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3094 | |
12359b5e | 3095 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3096 | |
12359b5e | 3097 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3098 | { |
52dc124a | 3099 | struct signatured_type *sig_type; |
9c541725 | 3100 | ULONGEST signature; |
1fd400ff | 3101 | void **slot; |
9c541725 | 3102 | cu_offset type_offset_in_tu; |
1fd400ff | 3103 | |
74a0d9f6 | 3104 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3105 | sect_offset sect_off |
3106 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3107 | type_offset_in_tu | |
3108 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3109 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3110 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3111 | bytes += 3 * 8; | |
3112 | ||
52dc124a | 3113 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3114 | struct signatured_type); |
52dc124a | 3115 | sig_type->signature = signature; |
9c541725 | 3116 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3117 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3118 | sig_type->per_cu.section = section; |
9c541725 | 3119 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3120 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3121 | sig_type->per_cu.v.quick |
1fd400ff TT |
3122 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3123 | struct dwarf2_per_cu_quick_data); | |
3124 | ||
52dc124a DE |
3125 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3126 | *slot = sig_type; | |
1fd400ff | 3127 | |
b2bdb8cf | 3128 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3129 | } |
3130 | ||
673bfd45 | 3131 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3132 | } |
3133 | ||
927aa2e7 JK |
3134 | /* Create the signatured type hash table from .debug_names. */ |
3135 | ||
3136 | static void | |
3137 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3138 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3139 | const mapped_debug_names &map, |
3140 | struct dwarf2_section_info *section, | |
3141 | struct dwarf2_section_info *abbrev_section) | |
3142 | { | |
ed2dc618 SM |
3143 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3144 | ||
927aa2e7 JK |
3145 | dwarf2_read_section (objfile, section); |
3146 | dwarf2_read_section (objfile, abbrev_section); | |
3147 | ||
b2bdb8cf SM |
3148 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3149 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3150 | |
3151 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3152 | ||
3153 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3154 | { | |
3155 | struct signatured_type *sig_type; | |
927aa2e7 | 3156 | void **slot; |
927aa2e7 JK |
3157 | |
3158 | sect_offset sect_off | |
3159 | = (sect_offset) (extract_unsigned_integer | |
3160 | (map.tu_table_reordered + i * map.offset_size, | |
3161 | map.offset_size, | |
3162 | map.dwarf5_byte_order)); | |
3163 | ||
3164 | comp_unit_head cu_header; | |
ed2dc618 SM |
3165 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3166 | abbrev_section, | |
927aa2e7 JK |
3167 | section->buffer + to_underlying (sect_off), |
3168 | rcuh_kind::TYPE); | |
3169 | ||
3170 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3171 | struct signatured_type); | |
3172 | sig_type->signature = cu_header.signature; | |
3173 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3174 | sig_type->per_cu.is_debug_types = 1; | |
3175 | sig_type->per_cu.section = section; | |
3176 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3177 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3178 | sig_type->per_cu.v.quick |
3179 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3180 | struct dwarf2_per_cu_quick_data); | |
3181 | ||
3182 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3183 | *slot = sig_type; | |
3184 | ||
b2bdb8cf | 3185 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3186 | } |
3187 | ||
3188 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3189 | } | |
3190 | ||
9291a0cd TT |
3191 | /* Read the address map data from the mapped index, and use it to |
3192 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3193 | |
9291a0cd | 3194 | static void |
ed2dc618 SM |
3195 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3196 | struct mapped_index *index) | |
9291a0cd | 3197 | { |
ed2dc618 | 3198 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3199 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3200 | const gdb_byte *iter, *end; |
9291a0cd | 3201 | struct addrmap *mutable_map; |
9291a0cd TT |
3202 | CORE_ADDR baseaddr; |
3203 | ||
8268c778 PA |
3204 | auto_obstack temp_obstack; |
3205 | ||
9291a0cd TT |
3206 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3207 | ||
f00a2de2 PA |
3208 | iter = index->address_table.data (); |
3209 | end = iter + index->address_table.size (); | |
9291a0cd | 3210 | |
b3b3bada | 3211 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
3212 | |
3213 | while (iter < end) | |
3214 | { | |
3215 | ULONGEST hi, lo, cu_index; | |
3216 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3217 | iter += 8; | |
3218 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3219 | iter += 8; | |
3220 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3221 | iter += 4; | |
f652bce2 | 3222 | |
24a55014 | 3223 | if (lo > hi) |
f652bce2 | 3224 | { |
b98664d3 | 3225 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3226 | hex_string (lo), hex_string (hi)); |
24a55014 | 3227 | continue; |
f652bce2 | 3228 | } |
24a55014 | 3229 | |
b76e467d | 3230 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3231 | { |
b98664d3 | 3232 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3233 | (unsigned) cu_index); |
24a55014 | 3234 | continue; |
f652bce2 | 3235 | } |
24a55014 | 3236 | |
79748972 TT |
3237 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
3238 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 3239 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3240 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3241 | } |
3242 | ||
d320c2b5 | 3243 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3244 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
3245 | } |
3246 | ||
927aa2e7 JK |
3247 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3248 | populate the objfile's psymtabs_addrmap. */ | |
3249 | ||
3250 | static void | |
ed2dc618 | 3251 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3252 | struct dwarf2_section_info *section) |
3253 | { | |
ed2dc618 | 3254 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3255 | bfd *abfd = objfile->obfd; |
3256 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 3257 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
3258 | |
3259 | auto_obstack temp_obstack; | |
3260 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3261 | ||
3262 | std::unordered_map<sect_offset, | |
3263 | dwarf2_per_cu_data *, | |
3264 | gdb::hash_enum<sect_offset>> | |
3265 | debug_info_offset_to_per_cu; | |
b76e467d | 3266 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3267 | { |
927aa2e7 JK |
3268 | const auto insertpair |
3269 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3270 | if (!insertpair.second) | |
3271 | { | |
3272 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3273 | "debug_info_offset %s, ignoring .debug_aranges."), |
3274 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3275 | return; |
3276 | } | |
3277 | } | |
3278 | ||
3279 | dwarf2_read_section (objfile, section); | |
3280 | ||
3281 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3282 | ||
3283 | const gdb_byte *addr = section->buffer; | |
3284 | ||
3285 | while (addr < section->buffer + section->size) | |
3286 | { | |
3287 | const gdb_byte *const entry_addr = addr; | |
3288 | unsigned int bytes_read; | |
3289 | ||
3290 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3291 | &bytes_read); | |
3292 | addr += bytes_read; | |
3293 | ||
3294 | const gdb_byte *const entry_end = addr + entry_length; | |
3295 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3296 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3297 | if (addr + entry_length > section->buffer + section->size) | |
3298 | { | |
47e3f474 | 3299 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3300 | "length %s exceeds section length %s, " |
3301 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3302 | objfile_name (objfile), |
3303 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3304 | plongest (bytes_read + entry_length), |
3305 | pulongest (section->size)); | |
3306 | return; | |
3307 | } | |
3308 | ||
3309 | /* The version number. */ | |
3310 | const uint16_t version = read_2_bytes (abfd, addr); | |
3311 | addr += 2; | |
3312 | if (version != 2) | |
3313 | { | |
47e3f474 | 3314 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3315 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
3316 | objfile_name (objfile), |
3317 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
3318 | return; |
3319 | } | |
3320 | ||
3321 | const uint64_t debug_info_offset | |
3322 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3323 | addr += offset_size; | |
3324 | const auto per_cu_it | |
3325 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3326 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3327 | { | |
47e3f474 | 3328 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3329 | "debug_info_offset %s does not exists, " |
3330 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3331 | objfile_name (objfile), |
3332 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3333 | pulongest (debug_info_offset)); |
3334 | return; | |
3335 | } | |
3336 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3337 | ||
3338 | const uint8_t address_size = *addr++; | |
3339 | if (address_size < 1 || address_size > 8) | |
3340 | { | |
47e3f474 | 3341 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3342 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
3343 | objfile_name (objfile), |
3344 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
3345 | return; |
3346 | } | |
3347 | ||
3348 | const uint8_t segment_selector_size = *addr++; | |
3349 | if (segment_selector_size != 0) | |
3350 | { | |
47e3f474 | 3351 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3352 | "segment_selector_size %u is not supported, " |
3353 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3354 | objfile_name (objfile), |
3355 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3356 | segment_selector_size); |
3357 | return; | |
3358 | } | |
3359 | ||
3360 | /* Must pad to an alignment boundary that is twice the address | |
3361 | size. It is undocumented by the DWARF standard but GCC does | |
3362 | use it. */ | |
3363 | for (size_t padding = ((-(addr - section->buffer)) | |
3364 | & (2 * address_size - 1)); | |
3365 | padding > 0; padding--) | |
3366 | if (*addr++ != 0) | |
3367 | { | |
47e3f474 | 3368 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3369 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
3370 | objfile_name (objfile), |
3371 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3372 | return; |
3373 | } | |
3374 | ||
3375 | for (;;) | |
3376 | { | |
3377 | if (addr + 2 * address_size > entry_end) | |
3378 | { | |
47e3f474 | 3379 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3380 | "address list is not properly terminated, " |
3381 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3382 | objfile_name (objfile), |
3383 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3384 | return; |
3385 | } | |
3386 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3387 | dwarf5_byte_order); | |
3388 | addr += address_size; | |
3389 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3390 | dwarf5_byte_order); | |
3391 | addr += address_size; | |
3392 | if (start == 0 && length == 0) | |
3393 | break; | |
3394 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3395 | { | |
3396 | /* Symbol was eliminated due to a COMDAT group. */ | |
3397 | continue; | |
3398 | } | |
3399 | ULONGEST end = start + length; | |
79748972 TT |
3400 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3401 | - baseaddr); | |
3402 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3403 | - baseaddr); | |
927aa2e7 JK |
3404 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3405 | } | |
3406 | } | |
3407 | ||
d320c2b5 | 3408 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3409 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3410 | } |
3411 | ||
9291a0cd TT |
3412 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3413 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3414 | constant pool and return true. If NAME cannot be found, return |
3415 | false. */ | |
2fdf6df6 | 3416 | |
109483d9 | 3417 | static bool |
9291a0cd TT |
3418 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3419 | offset_type **vec_out) | |
3420 | { | |
0cf03b49 | 3421 | offset_type hash; |
9291a0cd | 3422 | offset_type slot, step; |
559a7a62 | 3423 | int (*cmp) (const char *, const char *); |
9291a0cd | 3424 | |
791afaa2 | 3425 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3426 | if (current_language->la_language == language_cplus |
45280282 IB |
3427 | || current_language->la_language == language_fortran |
3428 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3429 | { |
3430 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3431 | not contain any. */ | |
a8719064 | 3432 | |
72998fb3 | 3433 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3434 | { |
109483d9 | 3435 | without_params = cp_remove_params (name); |
0cf03b49 | 3436 | |
72998fb3 | 3437 | if (without_params != NULL) |
791afaa2 | 3438 | name = without_params.get (); |
0cf03b49 JK |
3439 | } |
3440 | } | |
3441 | ||
559a7a62 | 3442 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3443 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3444 | simulate our NAME being searched is also lowercased. */ |
3445 | hash = mapped_index_string_hash ((index->version == 4 | |
3446 | && case_sensitivity == case_sensitive_off | |
3447 | ? 5 : index->version), | |
3448 | name); | |
3449 | ||
f00a2de2 PA |
3450 | slot = hash & (index->symbol_table.size () - 1); |
3451 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3452 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3453 | |
3454 | for (;;) | |
3455 | { | |
9291a0cd | 3456 | const char *str; |
f00a2de2 PA |
3457 | |
3458 | const auto &bucket = index->symbol_table[slot]; | |
3459 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3460 | return false; |
9291a0cd | 3461 | |
f00a2de2 | 3462 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3463 | if (!cmp (name, str)) |
9291a0cd TT |
3464 | { |
3465 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3466 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3467 | return true; |
9291a0cd TT |
3468 | } |
3469 | ||
f00a2de2 | 3470 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3471 | } |
3472 | } | |
3473 | ||
4485a1c1 SM |
3474 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3475 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3476 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3477 | ok to use deprecated sections. |
3478 | ||
3479 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3480 | out parameters that are filled in with information about the CU and | |
3481 | TU lists in the section. | |
3482 | ||
4485a1c1 | 3483 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3484 | |
d33bc52e | 3485 | static bool |
4485a1c1 SM |
3486 | read_gdb_index_from_buffer (struct objfile *objfile, |
3487 | const char *filename, | |
3488 | bool deprecated_ok, | |
3489 | gdb::array_view<const gdb_byte> buffer, | |
3490 | struct mapped_index *map, | |
3491 | const gdb_byte **cu_list, | |
3492 | offset_type *cu_list_elements, | |
3493 | const gdb_byte **types_list, | |
3494 | offset_type *types_list_elements) | |
3495 | { | |
3496 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3497 | |
9291a0cd | 3498 | /* Version check. */ |
4485a1c1 | 3499 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3500 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3501 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3502 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3503 | indices. */ |
831adc1f | 3504 | if (version < 4) |
481860b3 GB |
3505 | { |
3506 | static int warning_printed = 0; | |
3507 | if (!warning_printed) | |
3508 | { | |
3509 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3510 | filename); |
481860b3 GB |
3511 | warning_printed = 1; |
3512 | } | |
3513 | return 0; | |
3514 | } | |
3515 | /* Index version 4 uses a different hash function than index version | |
3516 | 5 and later. | |
3517 | ||
3518 | Versions earlier than 6 did not emit psymbols for inlined | |
3519 | functions. Using these files will cause GDB not to be able to | |
3520 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3521 | indices unless the user has done |
3522 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3523 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3524 | { |
3525 | static int warning_printed = 0; | |
3526 | if (!warning_printed) | |
3527 | { | |
e615022a DE |
3528 | warning (_("\ |
3529 | Skipping deprecated .gdb_index section in %s.\n\ | |
3530 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3531 | to use the section anyway."), | |
2ec9a5e0 | 3532 | filename); |
481860b3 GB |
3533 | warning_printed = 1; |
3534 | } | |
3535 | return 0; | |
3536 | } | |
796a7ff8 | 3537 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3538 | of the TU (for symbols coming from TUs), |
3539 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3540 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3541 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3542 | These are just performance bugs, and we can't distinguish gdb-generated | |
3543 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3544 | |
481860b3 | 3545 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3546 | longer backward compatible. */ |
796a7ff8 | 3547 | if (version > 8) |
594e8718 | 3548 | return 0; |
9291a0cd | 3549 | |
559a7a62 | 3550 | map->version = version; |
9291a0cd | 3551 | |
4485a1c1 | 3552 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3553 | |
4485a1c1 | 3554 | int i = 0; |
2ec9a5e0 TT |
3555 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3556 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3557 | / 8); | |
1fd400ff TT |
3558 | ++i; |
3559 | ||
2ec9a5e0 TT |
3560 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3561 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3562 | - MAYBE_SWAP (metadata[i])) | |
3563 | / 8); | |
987d643c | 3564 | ++i; |
1fd400ff | 3565 | |
f00a2de2 PA |
3566 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3567 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3568 | map->address_table | |
3569 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3570 | ++i; |
3571 | ||
f00a2de2 PA |
3572 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3573 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3574 | map->symbol_table | |
3575 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3576 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3577 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3578 | |
f00a2de2 | 3579 | ++i; |
f9d83a0b | 3580 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3581 | |
2ec9a5e0 TT |
3582 | return 1; |
3583 | } | |
3584 | ||
4485a1c1 SM |
3585 | /* Callback types for dwarf2_read_gdb_index. */ |
3586 | ||
3587 | typedef gdb::function_view | |
3588 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3589 | get_gdb_index_contents_ftype; | |
3590 | typedef gdb::function_view | |
3591 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3592 | get_gdb_index_contents_dwz_ftype; | |
3593 | ||
927aa2e7 | 3594 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3595 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3596 | ||
3597 | static int | |
4485a1c1 SM |
3598 | dwarf2_read_gdb_index |
3599 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3600 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3601 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3602 | { |
2ec9a5e0 TT |
3603 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3604 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3605 | struct dwz_file *dwz; |
12359b5e | 3606 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3607 | |
4485a1c1 SM |
3608 | gdb::array_view<const gdb_byte> main_index_contents |
3609 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3610 | ||
3611 | if (main_index_contents.empty ()) | |
3612 | return 0; | |
3613 | ||
3063847f | 3614 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3615 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3616 | use_deprecated_index_sections, | |
3617 | main_index_contents, map.get (), &cu_list, | |
3618 | &cu_list_elements, &types_list, | |
3619 | &types_list_elements)) | |
2ec9a5e0 TT |
3620 | return 0; |
3621 | ||
0fefef59 | 3622 | /* Don't use the index if it's empty. */ |
3063847f | 3623 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3624 | return 0; |
3625 | ||
2ec9a5e0 TT |
3626 | /* If there is a .dwz file, read it so we can get its CU list as |
3627 | well. */ | |
ed2dc618 | 3628 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3629 | if (dwz != NULL) |
2ec9a5e0 | 3630 | { |
2ec9a5e0 TT |
3631 | struct mapped_index dwz_map; |
3632 | const gdb_byte *dwz_types_ignore; | |
3633 | offset_type dwz_types_elements_ignore; | |
3634 | ||
4485a1c1 SM |
3635 | gdb::array_view<const gdb_byte> dwz_index_content |
3636 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3637 | ||
3638 | if (dwz_index_content.empty ()) | |
3639 | return 0; | |
3640 | ||
3641 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3642 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3643 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3644 | &dwz_list, &dwz_list_elements, |
3645 | &dwz_types_ignore, | |
3646 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3647 | { |
3648 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3649 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3650 | return 0; |
3651 | } | |
3652 | } | |
3653 | ||
12359b5e SM |
3654 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3655 | dwz_list, dwz_list_elements); | |
1fd400ff | 3656 | |
8b70b953 TT |
3657 | if (types_list_elements) |
3658 | { | |
8b70b953 TT |
3659 | /* We can only handle a single .debug_types when we have an |
3660 | index. */ | |
fd5866f6 | 3661 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3662 | return 0; |
3663 | ||
fd5866f6 | 3664 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3665 | |
12359b5e SM |
3666 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3667 | types_list, types_list_elements); | |
8b70b953 | 3668 | } |
9291a0cd | 3669 | |
3063847f | 3670 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3671 | |
3063847f | 3672 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3673 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3674 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3675 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3676 | |
3677 | return 1; | |
3678 | } | |
3679 | ||
dee91e82 | 3680 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3681 | |
dee91e82 DE |
3682 | static void |
3683 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3684 | const gdb_byte *info_ptr, |
dee91e82 | 3685 | struct die_info *comp_unit_die, |
c0ab21c2 | 3686 | int has_children) |
9291a0cd | 3687 | { |
dee91e82 | 3688 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3689 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3690 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3691 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3692 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3693 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3694 | struct attribute *attr; |
7b9f3c50 DE |
3695 | void **slot; |
3696 | struct quick_file_names *qfn; | |
9291a0cd | 3697 | |
0186c6a7 DE |
3698 | gdb_assert (! this_cu->is_debug_types); |
3699 | ||
07261596 TT |
3700 | /* Our callers never want to match partial units -- instead they |
3701 | will match the enclosing full CU. */ | |
3702 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3703 | { | |
3704 | this_cu->v.quick->no_file_data = 1; | |
3705 | return; | |
3706 | } | |
3707 | ||
0186c6a7 | 3708 | lh_cu = this_cu; |
7b9f3c50 | 3709 | slot = NULL; |
dee91e82 | 3710 | |
fff8551c | 3711 | line_header_up lh; |
9c541725 | 3712 | sect_offset line_offset {}; |
fff8551c | 3713 | |
dee91e82 | 3714 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3715 | if (attr != nullptr) |
9291a0cd | 3716 | { |
7b9f3c50 DE |
3717 | struct quick_file_names find_entry; |
3718 | ||
9c541725 | 3719 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3720 | |
3721 | /* We may have already read in this line header (TU line header sharing). | |
3722 | If we have we're done. */ | |
094b34ac | 3723 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3724 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3725 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3726 | &find_entry, INSERT); | |
3727 | if (*slot != NULL) | |
3728 | { | |
9a3c8263 | 3729 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3730 | return; |
7b9f3c50 DE |
3731 | } |
3732 | ||
3019eac3 | 3733 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3734 | } |
3735 | if (lh == NULL) | |
3736 | { | |
094b34ac | 3737 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3738 | return; |
9291a0cd TT |
3739 | } |
3740 | ||
8d749320 | 3741 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3742 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3743 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3744 | gdb_assert (slot != NULL); |
3745 | *slot = qfn; | |
9291a0cd | 3746 | |
d721ba37 | 3747 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3748 | |
aa391654 TT |
3749 | int offset = 0; |
3750 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3751 | ++offset; | |
3752 | ||
7ba99d21 | 3753 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3754 | qfn->file_names = |
aa391654 TT |
3755 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3756 | if (offset != 0) | |
3757 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3758 | for (int i = 0; i < lh->file_names_size (); ++i) |
aa391654 | 3759 | qfn->file_names[i + offset] = file_full_name (i + 1, lh.get (), fnd.comp_dir); |
7b9f3c50 | 3760 | qfn->real_names = NULL; |
9291a0cd | 3761 | |
094b34ac | 3762 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3763 | } |
3764 | ||
3765 | /* A helper for the "quick" functions which attempts to read the line | |
3766 | table for THIS_CU. */ | |
3767 | ||
3768 | static struct quick_file_names * | |
e4a48d9d | 3769 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3770 | { |
0186c6a7 DE |
3771 | /* This should never be called for TUs. */ |
3772 | gdb_assert (! this_cu->is_debug_types); | |
3773 | /* Nor type unit groups. */ | |
3774 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3775 | |
dee91e82 DE |
3776 | if (this_cu->v.quick->file_names != NULL) |
3777 | return this_cu->v.quick->file_names; | |
3778 | /* If we know there is no line data, no point in looking again. */ | |
3779 | if (this_cu->v.quick->no_file_data) | |
3780 | return NULL; | |
3781 | ||
c0ab21c2 TT |
3782 | cutu_reader reader (this_cu); |
3783 | if (!reader.dummy_p) | |
3784 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3785 | reader.has_children); | |
dee91e82 DE |
3786 | |
3787 | if (this_cu->v.quick->no_file_data) | |
3788 | return NULL; | |
3789 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3790 | } |
3791 | ||
3792 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3793 | real path for a given file name from the line table. */ |
2fdf6df6 | 3794 | |
9291a0cd | 3795 | static const char * |
7b9f3c50 DE |
3796 | dw2_get_real_path (struct objfile *objfile, |
3797 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3798 | { |
7b9f3c50 DE |
3799 | if (qfn->real_names == NULL) |
3800 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3801 | qfn->num_file_names, const char *); |
9291a0cd | 3802 | |
7b9f3c50 | 3803 | if (qfn->real_names[index] == NULL) |
14278e1f | 3804 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3805 | |
7b9f3c50 | 3806 | return qfn->real_names[index]; |
9291a0cd TT |
3807 | } |
3808 | ||
3809 | static struct symtab * | |
3810 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3811 | { | |
ed2dc618 SM |
3812 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3813 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3814 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3815 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3816 | |
43f3e411 DE |
3817 | if (cust == NULL) |
3818 | return NULL; | |
ed2dc618 | 3819 | |
43f3e411 | 3820 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3821 | } |
3822 | ||
7b9f3c50 DE |
3823 | /* Traversal function for dw2_forget_cached_source_info. */ |
3824 | ||
3825 | static int | |
3826 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3827 | { |
7b9f3c50 | 3828 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3829 | |
7b9f3c50 | 3830 | if (file_data->real_names) |
9291a0cd | 3831 | { |
7b9f3c50 | 3832 | int i; |
9291a0cd | 3833 | |
7b9f3c50 | 3834 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3835 | { |
7b9f3c50 DE |
3836 | xfree ((void*) file_data->real_names[i]); |
3837 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3838 | } |
3839 | } | |
7b9f3c50 DE |
3840 | |
3841 | return 1; | |
3842 | } | |
3843 | ||
3844 | static void | |
3845 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3846 | { | |
ed2dc618 SM |
3847 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3848 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3849 | |
3850 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3851 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3852 | } |
3853 | ||
f8eba3c6 TT |
3854 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3855 | the symtabs and calls the iterator. */ | |
3856 | ||
3857 | static int | |
3858 | dw2_map_expand_apply (struct objfile *objfile, | |
3859 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3860 | const char *name, const char *real_path, |
14bc53a8 | 3861 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3862 | { |
43f3e411 | 3863 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3864 | |
3865 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3866 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3867 | return 0; |
3868 | ||
3869 | /* This may expand more than one symtab, and we want to iterate over | |
3870 | all of them. */ | |
58f0c718 | 3871 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3872 | |
14bc53a8 PA |
3873 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3874 | last_made, callback); | |
f8eba3c6 TT |
3875 | } |
3876 | ||
3877 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3878 | ||
14bc53a8 PA |
3879 | static bool |
3880 | dw2_map_symtabs_matching_filename | |
3881 | (struct objfile *objfile, const char *name, const char *real_path, | |
3882 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3883 | { |
c011a4f4 | 3884 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3885 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3886 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3887 | |
848e3e78 DE |
3888 | /* The rule is CUs specify all the files, including those used by |
3889 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3890 | |
b76e467d | 3891 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3892 | { |
3d7bb9d9 | 3893 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3894 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3895 | continue; |
3896 | ||
b76e467d | 3897 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3898 | if (file_data == NULL) |
9291a0cd TT |
3899 | continue; |
3900 | ||
b76e467d | 3901 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3902 | { |
7b9f3c50 | 3903 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3904 | const char *this_real_name; |
9291a0cd | 3905 | |
af529f8f | 3906 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3907 | { |
f5b95b50 | 3908 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3909 | callback)) |
3910 | return true; | |
288e77a7 | 3911 | continue; |
4aac40c8 | 3912 | } |
9291a0cd | 3913 | |
c011a4f4 DE |
3914 | /* Before we invoke realpath, which can get expensive when many |
3915 | files are involved, do a quick comparison of the basenames. */ | |
3916 | if (! basenames_may_differ | |
3917 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3918 | continue; | |
3919 | ||
da235a7c JK |
3920 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3921 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3922 | { |
da235a7c | 3923 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3924 | callback)) |
3925 | return true; | |
288e77a7 | 3926 | continue; |
da235a7c | 3927 | } |
9291a0cd | 3928 | |
da235a7c JK |
3929 | if (real_path != NULL) |
3930 | { | |
af529f8f JK |
3931 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3932 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3933 | if (this_real_name != NULL |
af529f8f | 3934 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3935 | { |
f5b95b50 | 3936 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3937 | callback)) |
3938 | return true; | |
288e77a7 | 3939 | continue; |
9291a0cd TT |
3940 | } |
3941 | } | |
3942 | } | |
3943 | } | |
3944 | ||
14bc53a8 | 3945 | return false; |
9291a0cd TT |
3946 | } |
3947 | ||
da51c347 DE |
3948 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3949 | ||
3950 | struct dw2_symtab_iterator | |
9291a0cd | 3951 | { |
ed2dc618 SM |
3952 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3953 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3954 | /* If set, only look for symbols that match that block. Valid values are |
3955 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3956 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3957 | /* The kind of symbol we're looking for. */ |
3958 | domain_enum domain; | |
3959 | /* The list of CUs from the index entry of the symbol, | |
3960 | or NULL if not found. */ | |
3961 | offset_type *vec; | |
3962 | /* The next element in VEC to look at. */ | |
3963 | int next; | |
3964 | /* The number of elements in VEC, or zero if there is no match. */ | |
3965 | int length; | |
8943b874 DE |
3966 | /* Have we seen a global version of the symbol? |
3967 | If so we can ignore all further global instances. | |
3968 | This is to work around gold/15646, inefficient gold-generated | |
3969 | indices. */ | |
3970 | int global_seen; | |
da51c347 | 3971 | }; |
9291a0cd | 3972 | |
2b79f376 | 3973 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3974 | |
9291a0cd | 3975 | static void |
da51c347 | 3976 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3977 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3978 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3979 | domain_enum domain, |
3980 | const char *name) | |
3981 | { | |
ed2dc618 | 3982 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3983 | iter->block_index = block_index; |
3984 | iter->domain = domain; | |
3985 | iter->next = 0; | |
8943b874 | 3986 | iter->global_seen = 0; |
da51c347 | 3987 | |
3063847f | 3988 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3989 | |
3990 | /* index is NULL if OBJF_READNOW. */ | |
3991 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3992 | iter->length = MAYBE_SWAP (*iter->vec); |
3993 | else | |
3994 | { | |
3995 | iter->vec = NULL; | |
3996 | iter->length = 0; | |
3997 | } | |
3998 | } | |
3999 | ||
4000 | /* Return the next matching CU or NULL if there are no more. */ | |
4001 | ||
4002 | static struct dwarf2_per_cu_data * | |
4003 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
4004 | { | |
ed2dc618 SM |
4005 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
4006 | ||
da51c347 DE |
4007 | for ( ; iter->next < iter->length; ++iter->next) |
4008 | { | |
4009 | offset_type cu_index_and_attrs = | |
4010 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
4011 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
4012 | gdb_index_symbol_kind symbol_kind = |
4013 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4014 | /* Only check the symbol attributes if they're present. | |
4015 | Indices prior to version 7 don't record them, | |
4016 | and indices >= 7 may elide them for certain symbols | |
4017 | (gold does this). */ | |
4018 | int attrs_valid = | |
ed2dc618 | 4019 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
4020 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
4021 | ||
3190f0c6 | 4022 | /* Don't crash on bad data. */ |
b76e467d | 4023 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4024 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 4025 | { |
b98664d3 | 4026 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
4027 | " [in module %s]"), |
4028 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4029 | continue; |
4030 | } | |
4031 | ||
ff4c9fec | 4032 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 4033 | |
da51c347 | 4034 | /* Skip if already read in. */ |
43f3e411 | 4035 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4036 | continue; |
4037 | ||
8943b874 DE |
4038 | /* Check static vs global. */ |
4039 | if (attrs_valid) | |
4040 | { | |
2b79f376 SM |
4041 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
4042 | ||
4043 | if (iter->block_index.has_value ()) | |
4044 | { | |
4045 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
4046 | ||
4047 | if (is_static != want_static) | |
4048 | continue; | |
4049 | } | |
4050 | ||
8943b874 DE |
4051 | /* Work around gold/15646. */ |
4052 | if (!is_static && iter->global_seen) | |
4053 | continue; | |
4054 | if (!is_static) | |
4055 | iter->global_seen = 1; | |
4056 | } | |
da51c347 DE |
4057 | |
4058 | /* Only check the symbol's kind if it has one. */ | |
4059 | if (attrs_valid) | |
4060 | { | |
4061 | switch (iter->domain) | |
4062 | { | |
4063 | case VAR_DOMAIN: | |
4064 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4065 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4066 | /* Some types are also in VAR_DOMAIN. */ | |
4067 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4068 | continue; | |
4069 | break; | |
4070 | case STRUCT_DOMAIN: | |
4071 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4072 | continue; | |
4073 | break; | |
4074 | case LABEL_DOMAIN: | |
4075 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4076 | continue; | |
4077 | break; | |
59c35742 AB |
4078 | case MODULE_DOMAIN: |
4079 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4080 | continue; | |
4081 | break; | |
da51c347 DE |
4082 | default: |
4083 | break; | |
4084 | } | |
4085 | } | |
4086 | ||
4087 | ++iter->next; | |
4088 | return per_cu; | |
4089 | } | |
4090 | ||
4091 | return NULL; | |
4092 | } | |
4093 | ||
43f3e411 | 4094 | static struct compunit_symtab * |
c7f839cb | 4095 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 4096 | const char *name, domain_enum domain) |
9291a0cd | 4097 | { |
43f3e411 | 4098 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4099 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4100 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4101 | |
b5ec771e PA |
4102 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4103 | ||
ed2dc618 SM |
4104 | struct dw2_symtab_iterator iter; |
4105 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4106 | |
2b79f376 | 4107 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 4108 | |
ed2dc618 SM |
4109 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4110 | { | |
4111 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4112 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 4113 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 4114 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 4115 | |
ed2dc618 SM |
4116 | sym = block_find_symbol (block, name, domain, |
4117 | block_find_non_opaque_type_preferred, | |
4118 | &with_opaque); | |
b2e2f908 | 4119 | |
ed2dc618 SM |
4120 | /* Some caution must be observed with overloaded functions |
4121 | and methods, since the index will not contain any overload | |
4122 | information (but NAME might contain it). */ | |
da51c347 | 4123 | |
ed2dc618 SM |
4124 | if (sym != NULL |
4125 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4126 | return stab; | |
4127 | if (with_opaque != NULL | |
4128 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4129 | stab_best = stab; | |
da51c347 | 4130 | |
ed2dc618 | 4131 | /* Keep looking through other CUs. */ |
9291a0cd | 4132 | } |
9291a0cd | 4133 | |
da51c347 | 4134 | return stab_best; |
9291a0cd TT |
4135 | } |
4136 | ||
4137 | static void | |
4138 | dw2_print_stats (struct objfile *objfile) | |
4139 | { | |
ed2dc618 SM |
4140 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4141 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4142 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4143 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4144 | int count = 0; |
9291a0cd | 4145 | |
ed2dc618 | 4146 | for (int i = 0; i < total; ++i) |
9291a0cd | 4147 | { |
ff4c9fec | 4148 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4149 | |
43f3e411 | 4150 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4151 | ++count; |
4152 | } | |
e4a48d9d | 4153 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4154 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4155 | } | |
4156 | ||
779bd270 DE |
4157 | /* This dumps minimal information about the index. |
4158 | It is called via "mt print objfiles". | |
4159 | One use is to verify .gdb_index has been loaded by the | |
4160 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4161 | ||
9291a0cd TT |
4162 | static void |
4163 | dw2_dump (struct objfile *objfile) | |
4164 | { | |
ed2dc618 SM |
4165 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4166 | = get_dwarf2_per_objfile (objfile); | |
4167 | ||
779bd270 DE |
4168 | gdb_assert (dwarf2_per_objfile->using_index); |
4169 | printf_filtered (".gdb_index:"); | |
4170 | if (dwarf2_per_objfile->index_table != NULL) | |
4171 | { | |
4172 | printf_filtered (" version %d\n", | |
4173 | dwarf2_per_objfile->index_table->version); | |
4174 | } | |
4175 | else | |
4176 | printf_filtered (" faked for \"readnow\"\n"); | |
4177 | printf_filtered ("\n"); | |
9291a0cd TT |
4178 | } |
4179 | ||
9291a0cd TT |
4180 | static void |
4181 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4182 | const char *func_name) | |
4183 | { | |
ed2dc618 SM |
4184 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4185 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4186 | |
ed2dc618 SM |
4187 | struct dw2_symtab_iterator iter; |
4188 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4189 | |
2b79f376 | 4190 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 4191 | |
ed2dc618 | 4192 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4193 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4194 | |
9291a0cd TT |
4195 | } |
4196 | ||
4197 | static void | |
4198 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4199 | { | |
ed2dc618 SM |
4200 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4201 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4202 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4203 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4204 | |
ed2dc618 | 4205 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4206 | { |
ff4c9fec | 4207 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4208 | |
58f0c718 TT |
4209 | /* We don't want to directly expand a partial CU, because if we |
4210 | read it with the wrong language, then assertion failures can | |
4211 | be triggered later on. See PR symtab/23010. So, tell | |
4212 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4213 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4214 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4215 | } |
4216 | } | |
4217 | ||
4218 | static void | |
652a8996 JK |
4219 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4220 | const char *fullname) | |
9291a0cd | 4221 | { |
ed2dc618 SM |
4222 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4223 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4224 | |
4225 | /* We don't need to consider type units here. | |
4226 | This is only called for examining code, e.g. expand_line_sal. | |
4227 | There can be an order of magnitude (or more) more type units | |
4228 | than comp units, and we avoid them if we can. */ | |
4229 | ||
b76e467d | 4230 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4231 | { |
3d7bb9d9 | 4232 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4233 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4234 | continue; |
4235 | ||
b76e467d | 4236 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4237 | if (file_data == NULL) |
9291a0cd TT |
4238 | continue; |
4239 | ||
b76e467d | 4240 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4241 | { |
652a8996 JK |
4242 | const char *this_fullname = file_data->file_names[j]; |
4243 | ||
4244 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4245 | { |
58f0c718 | 4246 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4247 | break; |
4248 | } | |
4249 | } | |
4250 | } | |
4251 | } | |
4252 | ||
9291a0cd | 4253 | static void |
199b4314 TT |
4254 | dw2_map_matching_symbols |
4255 | (struct objfile *objfile, | |
b054970d | 4256 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
4257 | int global, |
4258 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 4259 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4260 | { |
40658b94 | 4261 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4262 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4263 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4264 | } |
4265 | ||
e1ef7d7a PA |
4266 | /* Starting from a search name, return the string that finds the upper |
4267 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4268 | list. Returns the empty string to indicate that the upper bound is | |
4269 | the end of the list. */ | |
4270 | ||
4271 | static std::string | |
4272 | make_sort_after_prefix_name (const char *search_name) | |
4273 | { | |
4274 | /* When looking to complete "func", we find the upper bound of all | |
4275 | symbols that start with "func" by looking for where we'd insert | |
4276 | the closest string that would follow "func" in lexicographical | |
4277 | order. Usually, that's "func"-with-last-character-incremented, | |
4278 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4279 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4280 | Especially mind the 0xff character, which is a valid character in | |
4281 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4282 | rule out compilers allowing it in identifiers. Note that | |
4283 | conveniently, strcmp/strcasecmp are specified to compare | |
4284 | characters interpreted as unsigned char. So what we do is treat | |
4285 | the whole string as a base 256 number composed of a sequence of | |
4286 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4287 | to 0, and carries 1 to the following more-significant position. | |
4288 | If the very first character in SEARCH_NAME ends up incremented | |
4289 | and carries/overflows, then the upper bound is the end of the | |
4290 | list. The string after the empty string is also the empty | |
4291 | string. | |
4292 | ||
4293 | Some examples of this operation: | |
4294 | ||
4295 | SEARCH_NAME => "+1" RESULT | |
4296 | ||
4297 | "abc" => "abd" | |
4298 | "ab\xff" => "ac" | |
4299 | "\xff" "a" "\xff" => "\xff" "b" | |
4300 | "\xff" => "" | |
4301 | "\xff\xff" => "" | |
4302 | "" => "" | |
4303 | ||
4304 | Then, with these symbols for example: | |
4305 | ||
4306 | func | |
4307 | func1 | |
4308 | fund | |
4309 | ||
4310 | completing "func" looks for symbols between "func" and | |
4311 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4312 | which finds "func" and "func1", but not "fund". | |
4313 | ||
4314 | And with: | |
4315 | ||
4316 | funcÿ (Latin1 'ÿ' [0xff]) | |
4317 | funcÿ1 | |
4318 | fund | |
4319 | ||
4320 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4321 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4322 | ||
4323 | And with: | |
4324 | ||
4325 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4326 | ÿÿ1 | |
4327 | ||
4328 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4329 | the end of the list. | |
4330 | */ | |
4331 | std::string after = search_name; | |
4332 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4333 | after.pop_back (); | |
4334 | if (!after.empty ()) | |
4335 | after.back () = (unsigned char) after.back () + 1; | |
4336 | return after; | |
4337 | } | |
4338 | ||
5c58de74 | 4339 | /* See declaration. */ |
61d96d7e | 4340 | |
5c58de74 PA |
4341 | std::pair<std::vector<name_component>::const_iterator, |
4342 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4343 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 4344 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 4345 | { |
5c58de74 PA |
4346 | auto *name_cmp |
4347 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4348 | |
3b00ef10 TT |
4349 | const char *lang_name |
4350 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 4351 | |
3f563c84 PA |
4352 | /* Comparison function object for lower_bound that matches against a |
4353 | given symbol name. */ | |
4354 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4355 | const char *name) | |
4356 | { | |
5c58de74 | 4357 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4358 | const char *elem_name = elem_qualified + elem.name_offset; |
4359 | return name_cmp (elem_name, name) < 0; | |
4360 | }; | |
4361 | ||
4362 | /* Comparison function object for upper_bound that matches against a | |
4363 | given symbol name. */ | |
4364 | auto lookup_compare_upper = [&] (const char *name, | |
4365 | const name_component &elem) | |
4366 | { | |
5c58de74 | 4367 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4368 | const char *elem_name = elem_qualified + elem.name_offset; |
4369 | return name_cmp (name, elem_name) < 0; | |
4370 | }; | |
4371 | ||
5c58de74 PA |
4372 | auto begin = this->name_components.begin (); |
4373 | auto end = this->name_components.end (); | |
3f563c84 PA |
4374 | |
4375 | /* Find the lower bound. */ | |
4376 | auto lower = [&] () | |
4377 | { | |
3b00ef10 | 4378 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4379 | return begin; |
4380 | else | |
3b00ef10 | 4381 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4382 | } (); |
4383 | ||
4384 | /* Find the upper bound. */ | |
4385 | auto upper = [&] () | |
4386 | { | |
5c58de74 | 4387 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4388 | { |
e1ef7d7a PA |
4389 | /* In completion mode, we want UPPER to point past all |
4390 | symbols names that have the same prefix. I.e., with | |
4391 | these symbols, and completing "func": | |
4392 | ||
4393 | function << lower bound | |
4394 | function1 | |
4395 | other_function << upper bound | |
4396 | ||
4397 | We find the upper bound by looking for the insertion | |
4398 | point of "func"-with-last-character-incremented, | |
4399 | i.e. "fund". */ | |
3b00ef10 | 4400 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4401 | if (after.empty ()) |
3f563c84 | 4402 | return end; |
e6b2f5ef PA |
4403 | return std::lower_bound (lower, end, after.c_str (), |
4404 | lookup_compare_lower); | |
3f563c84 PA |
4405 | } |
4406 | else | |
3b00ef10 | 4407 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4408 | } (); |
4409 | ||
5c58de74 PA |
4410 | return {lower, upper}; |
4411 | } | |
4412 | ||
4413 | /* See declaration. */ | |
4414 | ||
4415 | void | |
44ed8f3e | 4416 | mapped_index_base::build_name_components () |
5c58de74 PA |
4417 | { |
4418 | if (!this->name_components.empty ()) | |
4419 | return; | |
4420 | ||
4421 | this->name_components_casing = case_sensitivity; | |
4422 | auto *name_cmp | |
4423 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4424 | ||
4425 | /* The code below only knows how to break apart components of C++ | |
4426 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4427 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4428 | auto count = this->symbol_name_count (); |
4429 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4430 | { |
44ed8f3e | 4431 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4432 | continue; |
4433 | ||
4434 | const char *name = this->symbol_name_at (idx); | |
4435 | ||
4436 | /* Add each name component to the name component table. */ | |
4437 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4438 | |
4439 | if (strstr (name, "::") != nullptr) | |
4440 | { | |
4441 | for (unsigned int current_len = cp_find_first_component (name); | |
4442 | name[current_len] != '\0'; | |
4443 | current_len += cp_find_first_component (name + current_len)) | |
4444 | { | |
4445 | gdb_assert (name[current_len] == ':'); | |
4446 | this->name_components.push_back ({previous_len, idx}); | |
4447 | /* Skip the '::'. */ | |
4448 | current_len += 2; | |
4449 | previous_len = current_len; | |
4450 | } | |
4451 | } | |
4452 | else | |
5c58de74 | 4453 | { |
3b00ef10 TT |
4454 | /* Handle the Ada encoded (aka mangled) form here. */ |
4455 | for (const char *iter = strstr (name, "__"); | |
4456 | iter != nullptr; | |
4457 | iter = strstr (iter, "__")) | |
4458 | { | |
4459 | this->name_components.push_back ({previous_len, idx}); | |
4460 | iter += 2; | |
4461 | previous_len = iter - name; | |
4462 | } | |
5c58de74 | 4463 | } |
3b00ef10 | 4464 | |
5c58de74 PA |
4465 | this->name_components.push_back ({previous_len, idx}); |
4466 | } | |
4467 | ||
4468 | /* Sort name_components elements by name. */ | |
4469 | auto name_comp_compare = [&] (const name_component &left, | |
4470 | const name_component &right) | |
4471 | { | |
4472 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4473 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4474 | ||
4475 | const char *left_name = left_qualified + left.name_offset; | |
4476 | const char *right_name = right_qualified + right.name_offset; | |
4477 | ||
4478 | return name_cmp (left_name, right_name) < 0; | |
4479 | }; | |
4480 | ||
4481 | std::sort (this->name_components.begin (), | |
4482 | this->name_components.end (), | |
4483 | name_comp_compare); | |
4484 | } | |
4485 | ||
4486 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4487 | mapped_index_base instead of the containing objfile. This is split |
4488 | to a separate function in order to be able to unit test the | |
4489 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4490 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4491 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4492 | |
4493 | static void | |
4494 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4495 | (mapped_index_base &index, |
5c58de74 PA |
4496 | const lookup_name_info &lookup_name_in, |
4497 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4498 | enum search_domain kind, | |
3b00ef10 | 4499 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4500 | { |
4501 | lookup_name_info lookup_name_without_params | |
4502 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4503 | |
4504 | /* Build the symbol name component sorted vector, if we haven't | |
4505 | yet. */ | |
4506 | index.build_name_components (); | |
4507 | ||
3f563c84 PA |
4508 | /* The same symbol may appear more than once in the range though. |
4509 | E.g., if we're looking for symbols that complete "w", and we have | |
4510 | a symbol named "w1::w2", we'll find the two name components for | |
4511 | that same symbol in the range. To be sure we only call the | |
4512 | callback once per symbol, we first collect the symbol name | |
4513 | indexes that matched in a temporary vector and ignore | |
4514 | duplicates. */ | |
4515 | std::vector<offset_type> matches; | |
3f563c84 | 4516 | |
3b00ef10 TT |
4517 | struct name_and_matcher |
4518 | { | |
4519 | symbol_name_matcher_ftype *matcher; | |
4520 | const std::string &name; | |
4521 | ||
4522 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4523 | { |
3b00ef10 TT |
4524 | return matcher == other.matcher && name == other.name; |
4525 | } | |
4526 | }; | |
4527 | ||
4528 | /* A vector holding all the different symbol name matchers, for all | |
4529 | languages. */ | |
4530 | std::vector<name_and_matcher> matchers; | |
4531 | ||
4532 | for (int i = 0; i < nr_languages; i++) | |
4533 | { | |
4534 | enum language lang_e = (enum language) i; | |
4535 | ||
4536 | const language_defn *lang = language_def (lang_e); | |
4537 | symbol_name_matcher_ftype *name_matcher | |
4538 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4539 | |
3b00ef10 TT |
4540 | name_and_matcher key { |
4541 | name_matcher, | |
4542 | lookup_name_without_params.language_lookup_name (lang_e) | |
4543 | }; | |
4544 | ||
4545 | /* Don't insert the same comparison routine more than once. | |
4546 | Note that we do this linear walk. This is not a problem in | |
4547 | practice because the number of supported languages is | |
4548 | low. */ | |
4549 | if (std::find (matchers.begin (), matchers.end (), key) | |
4550 | != matchers.end ()) | |
9291a0cd | 4551 | continue; |
3b00ef10 TT |
4552 | matchers.push_back (std::move (key)); |
4553 | ||
4554 | auto bounds | |
4555 | = index.find_name_components_bounds (lookup_name_without_params, | |
4556 | lang_e); | |
4557 | ||
4558 | /* Now for each symbol name in range, check to see if we have a name | |
4559 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4560 | ||
4561 | for (; bounds.first != bounds.second; ++bounds.first) | |
4562 | { | |
4563 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4564 | ||
4565 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4566 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4567 | continue; | |
9291a0cd | 4568 | |
3b00ef10 TT |
4569 | matches.push_back (bounds.first->idx); |
4570 | } | |
3f563c84 PA |
4571 | } |
4572 | ||
4573 | std::sort (matches.begin (), matches.end ()); | |
4574 | ||
4575 | /* Finally call the callback, once per match. */ | |
4576 | ULONGEST prev = -1; | |
4577 | for (offset_type idx : matches) | |
4578 | { | |
4579 | if (prev != idx) | |
4580 | { | |
3b00ef10 TT |
4581 | if (!match_callback (idx)) |
4582 | break; | |
3f563c84 PA |
4583 | prev = idx; |
4584 | } | |
4585 | } | |
4586 | ||
4587 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4588 | (offset_type)-1 are both possible values. */ | |
4589 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4590 | } | |
4591 | ||
c62446b1 PA |
4592 | #if GDB_SELF_TEST |
4593 | ||
4594 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4595 | ||
a3c5fafd PA |
4596 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4597 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4598 | mapped_index_base interface. Builds an index from the symbol list | |
4599 | passed as parameter to the constructor. */ | |
4600 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4601 | { |
4602 | public: | |
a3c5fafd PA |
4603 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4604 | : m_symbol_table (symbols) | |
c62446b1 PA |
4605 | {} |
4606 | ||
a3c5fafd | 4607 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4608 | |
a3c5fafd | 4609 | /* Return the number of names in the symbol table. */ |
632e107b | 4610 | size_t symbol_name_count () const override |
c62446b1 | 4611 | { |
a3c5fafd | 4612 | return m_symbol_table.size (); |
c62446b1 PA |
4613 | } |
4614 | ||
a3c5fafd | 4615 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4616 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4617 | { |
4618 | return m_symbol_table[idx]; | |
4619 | } | |
c62446b1 | 4620 | |
a3c5fafd PA |
4621 | private: |
4622 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4623 | }; |
4624 | ||
4625 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4626 | string, to pass to print routines. */ | |
4627 | ||
4628 | static const char * | |
4629 | string_or_null (const char *str) | |
4630 | { | |
4631 | return str != NULL ? str : "<null>"; | |
4632 | } | |
4633 | ||
4634 | /* Check if a lookup_name_info built from | |
4635 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4636 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4637 | matching order. If no match expected, then an empty list is | |
4638 | specified. Returns true on success. On failure prints a warning | |
4639 | indicating the file:line that failed, and returns false. */ | |
4640 | ||
4641 | static bool | |
4642 | check_match (const char *file, int line, | |
4643 | mock_mapped_index &mock_index, | |
4644 | const char *name, symbol_name_match_type match_type, | |
4645 | bool completion_mode, | |
4646 | std::initializer_list<const char *> expected_list) | |
4647 | { | |
4648 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4649 | ||
4650 | bool matched = true; | |
4651 | ||
4652 | auto mismatch = [&] (const char *expected_str, | |
4653 | const char *got) | |
4654 | { | |
4655 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4656 | "expected=\"%s\", got=\"%s\"\n"), | |
4657 | file, line, | |
4658 | (match_type == symbol_name_match_type::FULL | |
4659 | ? "FULL" : "WILD"), | |
4660 | name, string_or_null (expected_str), string_or_null (got)); | |
4661 | matched = false; | |
4662 | }; | |
4663 | ||
4664 | auto expected_it = expected_list.begin (); | |
4665 | auto expected_end = expected_list.end (); | |
4666 | ||
a3c5fafd | 4667 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4668 | NULL, ALL_DOMAIN, |
4669 | [&] (offset_type idx) | |
4670 | { | |
a3c5fafd | 4671 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4672 | const char *expected_str |
4673 | = expected_it == expected_end ? NULL : *expected_it++; | |
4674 | ||
4675 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4676 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4677 | return true; |
c62446b1 PA |
4678 | }); |
4679 | ||
4680 | const char *expected_str | |
4681 | = expected_it == expected_end ? NULL : *expected_it++; | |
4682 | if (expected_str != NULL) | |
4683 | mismatch (expected_str, NULL); | |
4684 | ||
4685 | return matched; | |
4686 | } | |
4687 | ||
4688 | /* The symbols added to the mock mapped_index for testing (in | |
4689 | canonical form). */ | |
4690 | static const char *test_symbols[] = { | |
4691 | "function", | |
4692 | "std::bar", | |
4693 | "std::zfunction", | |
4694 | "std::zfunction2", | |
4695 | "w1::w2", | |
4696 | "ns::foo<char*>", | |
4697 | "ns::foo<int>", | |
4698 | "ns::foo<long>", | |
a20714ff PA |
4699 | "ns2::tmpl<int>::foo2", |
4700 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4701 | |
e1ef7d7a PA |
4702 | /* These are used to check that the increment-last-char in the |
4703 | matching algorithm for completion doesn't match "t1_fund" when | |
4704 | completing "t1_func". */ | |
4705 | "t1_func", | |
4706 | "t1_func1", | |
4707 | "t1_fund", | |
4708 | "t1_fund1", | |
4709 | ||
4710 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4711 | cp-name-parser understands this as a single identifier ("função" | |
4712 | is "function" in PT). */ | |
4713 | u8"u8função", | |
4714 | ||
4715 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4716 | "yfunc\377", | |
4717 | ||
4718 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4719 | "\377", | |
4720 | "\377\377123", | |
4721 | ||
c62446b1 PA |
4722 | /* A name with all sorts of complications. Starts with "z" to make |
4723 | it easier for the completion tests below. */ | |
4724 | #define Z_SYM_NAME \ | |
4725 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4726 | "::tuple<(anonymous namespace)::ui*, " \ | |
4727 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4728 | ||
4729 | Z_SYM_NAME | |
4730 | }; | |
4731 | ||
a3c5fafd PA |
4732 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4733 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4734 | in completion mode. */ | |
5c58de74 PA |
4735 | |
4736 | static bool | |
a3c5fafd | 4737 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4738 | const char *search_name, |
4739 | gdb::array_view<const char *> expected_syms) | |
4740 | { | |
4741 | lookup_name_info lookup_name (search_name, | |
4742 | symbol_name_match_type::FULL, true); | |
4743 | ||
3b00ef10 TT |
4744 | auto bounds = index.find_name_components_bounds (lookup_name, |
4745 | language_cplus); | |
5c58de74 PA |
4746 | |
4747 | size_t distance = std::distance (bounds.first, bounds.second); | |
4748 | if (distance != expected_syms.size ()) | |
4749 | return false; | |
4750 | ||
4751 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4752 | { | |
4753 | auto nc_elem = bounds.first + exp_elem; | |
4754 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4755 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4756 | return false; | |
4757 | } | |
4758 | ||
4759 | return true; | |
4760 | } | |
4761 | ||
4762 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4763 | method. */ | |
4764 | ||
c62446b1 | 4765 | static void |
5c58de74 PA |
4766 | test_mapped_index_find_name_component_bounds () |
4767 | { | |
4768 | mock_mapped_index mock_index (test_symbols); | |
4769 | ||
a3c5fafd | 4770 | mock_index.build_name_components (); |
5c58de74 PA |
4771 | |
4772 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4773 | method in completion mode. */ | |
4774 | { | |
4775 | static const char *expected_syms[] = { | |
4776 | "t1_func", | |
4777 | "t1_func1", | |
5c58de74 PA |
4778 | }; |
4779 | ||
a3c5fafd | 4780 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4781 | "t1_func", expected_syms)); |
4782 | } | |
4783 | ||
4784 | /* Check that the increment-last-char in the name matching algorithm | |
4785 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4786 | { | |
4787 | static const char *expected_syms1[] = { | |
4788 | "\377", | |
4789 | "\377\377123", | |
4790 | }; | |
a3c5fafd | 4791 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4792 | "\377", expected_syms1)); |
4793 | ||
4794 | static const char *expected_syms2[] = { | |
4795 | "\377\377123", | |
4796 | }; | |
a3c5fafd | 4797 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4798 | "\377\377", expected_syms2)); |
4799 | } | |
4800 | } | |
4801 | ||
4802 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4803 | ||
4804 | static void | |
4805 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4806 | { |
4807 | mock_mapped_index mock_index (test_symbols); | |
4808 | ||
4809 | /* We let all tests run until the end even if some fails, for debug | |
4810 | convenience. */ | |
4811 | bool any_mismatch = false; | |
4812 | ||
4813 | /* Create the expected symbols list (an initializer_list). Needed | |
4814 | because lists have commas, and we need to pass them to CHECK, | |
4815 | which is a macro. */ | |
4816 | #define EXPECT(...) { __VA_ARGS__ } | |
4817 | ||
4818 | /* Wrapper for check_match that passes down the current | |
4819 | __FILE__/__LINE__. */ | |
4820 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4821 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4822 | mock_index, \ | |
4823 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4824 | EXPECTED_LIST) | |
4825 | ||
4826 | /* Identity checks. */ | |
4827 | for (const char *sym : test_symbols) | |
4828 | { | |
4829 | /* Should be able to match all existing symbols. */ | |
4830 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4831 | EXPECT (sym)); | |
4832 | ||
4833 | /* Should be able to match all existing symbols with | |
4834 | parameters. */ | |
4835 | std::string with_params = std::string (sym) + "(int)"; | |
4836 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4837 | EXPECT (sym)); | |
4838 | ||
4839 | /* Should be able to match all existing symbols with | |
4840 | parameters and qualifiers. */ | |
4841 | with_params = std::string (sym) + " ( int ) const"; | |
4842 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4843 | EXPECT (sym)); | |
4844 | ||
4845 | /* This should really find sym, but cp-name-parser.y doesn't | |
4846 | know about lvalue/rvalue qualifiers yet. */ | |
4847 | with_params = std::string (sym) + " ( int ) &&"; | |
4848 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4849 | {}); | |
4850 | } | |
4851 | ||
e1ef7d7a PA |
4852 | /* Check that the name matching algorithm for completion doesn't get |
4853 | confused with Latin1 'ÿ' / 0xff. */ | |
4854 | { | |
4855 | static const char str[] = "\377"; | |
4856 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4857 | EXPECT ("\377", "\377\377123")); | |
4858 | } | |
4859 | ||
4860 | /* Check that the increment-last-char in the matching algorithm for | |
4861 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4862 | { | |
4863 | static const char str[] = "t1_func"; | |
4864 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4865 | EXPECT ("t1_func", "t1_func1")); | |
4866 | } | |
4867 | ||
c62446b1 PA |
4868 | /* Check that completion mode works at each prefix of the expected |
4869 | symbol name. */ | |
4870 | { | |
4871 | static const char str[] = "function(int)"; | |
4872 | size_t len = strlen (str); | |
4873 | std::string lookup; | |
4874 | ||
4875 | for (size_t i = 1; i < len; i++) | |
4876 | { | |
4877 | lookup.assign (str, i); | |
4878 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4879 | EXPECT ("function")); | |
4880 | } | |
4881 | } | |
4882 | ||
4883 | /* While "w" is a prefix of both components, the match function | |
4884 | should still only be called once. */ | |
4885 | { | |
4886 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4887 | EXPECT ("w1::w2")); | |
a20714ff PA |
4888 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4889 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4890 | } |
4891 | ||
4892 | /* Same, with a "complicated" symbol. */ | |
4893 | { | |
4894 | static const char str[] = Z_SYM_NAME; | |
4895 | size_t len = strlen (str); | |
4896 | std::string lookup; | |
4897 | ||
4898 | for (size_t i = 1; i < len; i++) | |
4899 | { | |
4900 | lookup.assign (str, i); | |
4901 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4902 | EXPECT (Z_SYM_NAME)); | |
4903 | } | |
4904 | } | |
4905 | ||
4906 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4907 | { | |
4908 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4909 | {}); | |
4910 | } | |
4911 | ||
4912 | /* A complete symbol with parameters matches any overload, since the | |
4913 | index has no overload info. */ | |
4914 | { | |
4915 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4916 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4917 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4918 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4919 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4920 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4921 | } |
4922 | ||
4923 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4924 | template argument list. */ | |
4925 | { | |
4926 | static const char expected[] = "ns::foo<int>"; | |
4927 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4928 | EXPECT (expected)); | |
a20714ff PA |
4929 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4930 | EXPECT (expected)); | |
c62446b1 PA |
4931 | } |
4932 | ||
4933 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4934 | template argument list that includes a pointer. */ | |
4935 | { | |
4936 | static const char expected[] = "ns::foo<char*>"; | |
4937 | /* Try both completion and non-completion modes. */ | |
4938 | static const bool completion_mode[2] = {false, true}; | |
4939 | for (size_t i = 0; i < 2; i++) | |
4940 | { | |
4941 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4942 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4943 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4944 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4945 | |
4946 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4947 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4948 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4949 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4950 | } |
4951 | } | |
4952 | ||
4953 | { | |
4954 | /* Check method qualifiers are ignored. */ | |
4955 | static const char expected[] = "ns::foo<char*>"; | |
4956 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4957 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4958 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4959 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4960 | CHECK_MATCH ("foo < char * > ( int ) const", |
4961 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4962 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4963 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4964 | } |
4965 | ||
4966 | /* Test lookup names that don't match anything. */ | |
4967 | { | |
a20714ff PA |
4968 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4969 | {}); | |
4970 | ||
c62446b1 PA |
4971 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4972 | {}); | |
4973 | } | |
4974 | ||
a20714ff PA |
4975 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4976 | which should not be confused with a parameter list. */ | |
4977 | { | |
4978 | static const char *syms[] = { | |
4979 | "A::B::C", | |
4980 | "B::C", | |
4981 | "C", | |
4982 | "A :: B :: C ( int )", | |
4983 | "B :: C ( int )", | |
4984 | "C ( int )", | |
4985 | }; | |
4986 | ||
4987 | for (const char *s : syms) | |
4988 | { | |
4989 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4990 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4991 | } | |
4992 | } | |
4993 | ||
4994 | { | |
4995 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4996 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4997 | EXPECT (expected)); | |
4998 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4999 | EXPECT (expected)); | |
5000 | } | |
5001 | ||
c62446b1 PA |
5002 | SELF_CHECK (!any_mismatch); |
5003 | ||
5004 | #undef EXPECT | |
5005 | #undef CHECK_MATCH | |
5006 | } | |
5007 | ||
5c58de74 PA |
5008 | static void |
5009 | run_test () | |
5010 | { | |
5011 | test_mapped_index_find_name_component_bounds (); | |
5012 | test_dw2_expand_symtabs_matching_symbol (); | |
5013 | } | |
5014 | ||
c62446b1 PA |
5015 | }} // namespace selftests::dw2_expand_symtabs_matching |
5016 | ||
5017 | #endif /* GDB_SELF_TEST */ | |
5018 | ||
4b514bc8 JK |
5019 | /* If FILE_MATCHER is NULL or if PER_CU has |
5020 | dwarf2_per_cu_quick_data::MARK set (see | |
5021 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5022 | EXPANSION_NOTIFY on it. */ | |
5023 | ||
5024 | static void | |
5025 | dw2_expand_symtabs_matching_one | |
5026 | (struct dwarf2_per_cu_data *per_cu, | |
5027 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5028 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5029 | { | |
5030 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5031 | { | |
5032 | bool symtab_was_null | |
5033 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5034 | ||
58f0c718 | 5035 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
5036 | |
5037 | if (expansion_notify != NULL | |
5038 | && symtab_was_null | |
5039 | && per_cu->v.quick->compunit_symtab != NULL) | |
5040 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5041 | } | |
5042 | } | |
5043 | ||
3f563c84 PA |
5044 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5045 | matched, to expand corresponding CUs that were marked. IDX is the | |
5046 | index of the symbol name that matched. */ | |
5047 | ||
5048 | static void | |
5049 | dw2_expand_marked_cus | |
ed2dc618 | 5050 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5051 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5052 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5053 | search_domain kind) | |
5054 | { | |
3f563c84 PA |
5055 | offset_type *vec, vec_len, vec_idx; |
5056 | bool global_seen = false; | |
ed2dc618 | 5057 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5058 | |
61920122 | 5059 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5060 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5061 | vec_len = MAYBE_SWAP (vec[0]); |
5062 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5063 | { | |
61920122 PA |
5064 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5065 | /* This value is only valid for index versions >= 7. */ | |
5066 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5067 | gdb_index_symbol_kind symbol_kind = | |
5068 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5069 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5070 | /* Only check the symbol attributes if they're present. | |
5071 | Indices prior to version 7 don't record them, | |
5072 | and indices >= 7 may elide them for certain symbols | |
5073 | (gold does this). */ | |
5074 | int attrs_valid = | |
5075 | (index.version >= 7 | |
5076 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5077 | ||
5078 | /* Work around gold/15646. */ | |
5079 | if (attrs_valid) | |
9291a0cd | 5080 | { |
61920122 PA |
5081 | if (!is_static && global_seen) |
5082 | continue; | |
5083 | if (!is_static) | |
5084 | global_seen = true; | |
5085 | } | |
3190f0c6 | 5086 | |
61920122 PA |
5087 | /* Only check the symbol's kind if it has one. */ |
5088 | if (attrs_valid) | |
5089 | { | |
5090 | switch (kind) | |
8943b874 | 5091 | { |
61920122 PA |
5092 | case VARIABLES_DOMAIN: |
5093 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5094 | continue; | |
5095 | break; | |
5096 | case FUNCTIONS_DOMAIN: | |
5097 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5098 | continue; |
61920122 PA |
5099 | break; |
5100 | case TYPES_DOMAIN: | |
5101 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5102 | continue; | |
5103 | break; | |
59c35742 AB |
5104 | case MODULES_DOMAIN: |
5105 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
5106 | continue; | |
5107 | break; | |
61920122 PA |
5108 | default: |
5109 | break; | |
8943b874 | 5110 | } |
61920122 | 5111 | } |
8943b874 | 5112 | |
61920122 | 5113 | /* Don't crash on bad data. */ |
b76e467d | 5114 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5115 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5116 | { |
b98664d3 | 5117 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5118 | " [in module %s]"), |
5119 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5120 | continue; |
5121 | } | |
5122 | ||
ff4c9fec | 5123 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5124 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5125 | expansion_notify); | |
61920122 PA |
5126 | } |
5127 | } | |
5128 | ||
4b514bc8 JK |
5129 | /* If FILE_MATCHER is non-NULL, set all the |
5130 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5131 | that match FILE_MATCHER. */ | |
5132 | ||
61920122 | 5133 | static void |
4b514bc8 | 5134 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5135 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5136 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5137 | { |
4b514bc8 | 5138 | if (file_matcher == NULL) |
61920122 PA |
5139 | return; |
5140 | ||
4b514bc8 JK |
5141 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5142 | ||
5143 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5144 | htab_eq_pointer, | |
5145 | NULL, xcalloc, xfree)); | |
5146 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5147 | htab_eq_pointer, |
5148 | NULL, xcalloc, xfree)); | |
61920122 | 5149 | |
4b514bc8 JK |
5150 | /* The rule is CUs specify all the files, including those used by |
5151 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5152 | |
b76e467d | 5153 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5154 | { |
927aa2e7 JK |
5155 | QUIT; |
5156 | ||
5157 | per_cu->v.quick->mark = 0; | |
5158 | ||
5159 | /* We only need to look at symtabs not already expanded. */ | |
5160 | if (per_cu->v.quick->compunit_symtab) | |
5161 | continue; | |
5162 | ||
b76e467d | 5163 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5164 | if (file_data == NULL) |
5165 | continue; | |
5166 | ||
5167 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5168 | continue; | |
5169 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5170 | { | |
5171 | per_cu->v.quick->mark = 1; | |
5172 | continue; | |
5173 | } | |
5174 | ||
b76e467d | 5175 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5176 | { |
5177 | const char *this_real_name; | |
5178 | ||
5179 | if (file_matcher (file_data->file_names[j], false)) | |
5180 | { | |
5181 | per_cu->v.quick->mark = 1; | |
5182 | break; | |
5183 | } | |
5184 | ||
5185 | /* Before we invoke realpath, which can get expensive when many | |
5186 | files are involved, do a quick comparison of the basenames. */ | |
5187 | if (!basenames_may_differ | |
5188 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5189 | true)) | |
5190 | continue; | |
5191 | ||
5192 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5193 | if (file_matcher (this_real_name, false)) | |
5194 | { | |
5195 | per_cu->v.quick->mark = 1; | |
5196 | break; | |
5197 | } | |
5198 | } | |
5199 | ||
b76e467d SM |
5200 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5201 | ? visited_found.get () | |
5202 | : visited_not_found.get (), | |
5203 | file_data, INSERT); | |
927aa2e7 JK |
5204 | *slot = file_data; |
5205 | } | |
5206 | } | |
5207 | ||
5208 | static void | |
5209 | dw2_expand_symtabs_matching | |
5210 | (struct objfile *objfile, | |
5211 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5212 | const lookup_name_info &lookup_name, | |
5213 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5214 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5215 | enum search_domain kind) | |
5216 | { | |
ed2dc618 SM |
5217 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5218 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5219 | |
5220 | /* index_table is NULL if OBJF_READNOW. */ | |
5221 | if (!dwarf2_per_objfile->index_table) | |
5222 | return; | |
5223 | ||
ed2dc618 | 5224 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5225 | |
5226 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5227 | ||
5228 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5229 | symbol_matcher, | |
5230 | kind, [&] (offset_type idx) | |
5231 | { | |
ed2dc618 | 5232 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 5233 | expansion_notify, kind); |
3b00ef10 | 5234 | return true; |
927aa2e7 JK |
5235 | }); |
5236 | } | |
5237 | ||
5238 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5239 | symtab. */ | |
5240 | ||
5241 | static struct compunit_symtab * | |
5242 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5243 | CORE_ADDR pc) | |
5244 | { | |
5245 | int i; | |
5246 | ||
5247 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5248 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5249 | return cust; | |
5250 | ||
5251 | if (cust->includes == NULL) | |
5252 | return NULL; | |
5253 | ||
5254 | for (i = 0; cust->includes[i]; ++i) | |
5255 | { | |
5256 | struct compunit_symtab *s = cust->includes[i]; | |
5257 | ||
5258 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5259 | if (s != NULL) | |
5260 | return s; | |
5261 | } | |
5262 | ||
5263 | return NULL; | |
5264 | } | |
5265 | ||
5266 | static struct compunit_symtab * | |
5267 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5268 | struct bound_minimal_symbol msymbol, | |
5269 | CORE_ADDR pc, | |
5270 | struct obj_section *section, | |
5271 | int warn_if_readin) | |
5272 | { | |
5273 | struct dwarf2_per_cu_data *data; | |
5274 | struct compunit_symtab *result; | |
5275 | ||
d320c2b5 | 5276 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5277 | return NULL; |
5278 | ||
b3b3bada | 5279 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
5280 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5281 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5282 | if (!data) |
5283 | return NULL; | |
5284 | ||
5285 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5286 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5287 | paddress (get_objfile_arch (objfile), pc)); | |
5288 | ||
5289 | result | |
58f0c718 TT |
5290 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5291 | false), | |
927aa2e7 JK |
5292 | pc); |
5293 | gdb_assert (result != NULL); | |
5294 | return result; | |
5295 | } | |
5296 | ||
5297 | static void | |
5298 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5299 | void *data, int need_fullname) | |
5300 | { | |
ed2dc618 SM |
5301 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5302 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5303 | |
5304 | if (!dwarf2_per_objfile->filenames_cache) | |
5305 | { | |
5306 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5307 | ||
5308 | htab_up visited (htab_create_alloc (10, | |
5309 | htab_hash_pointer, htab_eq_pointer, | |
5310 | NULL, xcalloc, xfree)); | |
5311 | ||
5312 | /* The rule is CUs specify all the files, including those used | |
5313 | by any TU, so there's no need to scan TUs here. We can | |
5314 | ignore file names coming from already-expanded CUs. */ | |
5315 | ||
b76e467d | 5316 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5317 | { |
927aa2e7 JK |
5318 | if (per_cu->v.quick->compunit_symtab) |
5319 | { | |
5320 | void **slot = htab_find_slot (visited.get (), | |
5321 | per_cu->v.quick->file_names, | |
5322 | INSERT); | |
5323 | ||
5324 | *slot = per_cu->v.quick->file_names; | |
5325 | } | |
5326 | } | |
5327 | ||
b76e467d | 5328 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5329 | { |
927aa2e7 JK |
5330 | /* We only need to look at symtabs not already expanded. */ |
5331 | if (per_cu->v.quick->compunit_symtab) | |
5332 | continue; | |
5333 | ||
b76e467d | 5334 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5335 | if (file_data == NULL) |
5336 | continue; | |
5337 | ||
b76e467d | 5338 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5339 | if (*slot) |
5340 | { | |
5341 | /* Already visited. */ | |
5342 | continue; | |
5343 | } | |
5344 | *slot = file_data; | |
5345 | ||
5346 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5347 | { | |
5348 | const char *filename = file_data->file_names[j]; | |
5349 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5350 | } | |
5351 | } | |
5352 | } | |
5353 | ||
5354 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5355 | { | |
5356 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5357 | ||
5358 | if (need_fullname) | |
5359 | this_real_name = gdb_realpath (filename); | |
5360 | (*fun) (filename, this_real_name.get (), data); | |
5361 | }); | |
5362 | } | |
5363 | ||
5364 | static int | |
5365 | dw2_has_symbols (struct objfile *objfile) | |
5366 | { | |
5367 | return 1; | |
5368 | } | |
5369 | ||
5370 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5371 | { | |
5372 | dw2_has_symbols, | |
5373 | dw2_find_last_source_symtab, | |
5374 | dw2_forget_cached_source_info, | |
5375 | dw2_map_symtabs_matching_filename, | |
5376 | dw2_lookup_symbol, | |
5377 | dw2_print_stats, | |
5378 | dw2_dump, | |
927aa2e7 JK |
5379 | dw2_expand_symtabs_for_function, |
5380 | dw2_expand_all_symtabs, | |
5381 | dw2_expand_symtabs_with_fullname, | |
5382 | dw2_map_matching_symbols, | |
5383 | dw2_expand_symtabs_matching, | |
5384 | dw2_find_pc_sect_compunit_symtab, | |
5385 | NULL, | |
5386 | dw2_map_symbol_filenames | |
5387 | }; | |
5388 | ||
5389 | /* DWARF-5 debug_names reader. */ | |
5390 | ||
5391 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5392 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5393 | ||
5394 | /* A helper function that reads the .debug_names section in SECTION | |
5395 | and fills in MAP. FILENAME is the name of the file containing the | |
5396 | section; it is used for error reporting. | |
5397 | ||
5398 | Returns true if all went well, false otherwise. */ | |
5399 | ||
5400 | static bool | |
5401 | read_debug_names_from_section (struct objfile *objfile, | |
5402 | const char *filename, | |
5403 | struct dwarf2_section_info *section, | |
5404 | mapped_debug_names &map) | |
5405 | { | |
5406 | if (dwarf2_section_empty_p (section)) | |
5407 | return false; | |
5408 | ||
5409 | /* Older elfutils strip versions could keep the section in the main | |
5410 | executable while splitting it for the separate debug info file. */ | |
5411 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5412 | return false; | |
5413 | ||
5414 | dwarf2_read_section (objfile, section); | |
5415 | ||
5416 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5417 | ||
5418 | const gdb_byte *addr = section->buffer; | |
5419 | ||
5420 | bfd *const abfd = get_section_bfd_owner (section); | |
5421 | ||
5422 | unsigned int bytes_read; | |
5423 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5424 | addr += bytes_read; | |
5425 | ||
5426 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5427 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5428 | if (bytes_read + length != section->size) | |
5429 | { | |
5430 | /* There may be multiple per-CU indices. */ | |
5431 | warning (_("Section .debug_names in %s length %s does not match " | |
5432 | "section length %s, ignoring .debug_names."), | |
5433 | filename, plongest (bytes_read + length), | |
5434 | pulongest (section->size)); | |
5435 | return false; | |
5436 | } | |
5437 | ||
5438 | /* The version number. */ | |
5439 | uint16_t version = read_2_bytes (abfd, addr); | |
5440 | addr += 2; | |
5441 | if (version != 5) | |
5442 | { | |
5443 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5444 | "ignoring .debug_names."), | |
5445 | filename, version); | |
5446 | return false; | |
5447 | } | |
5448 | ||
5449 | /* Padding. */ | |
5450 | uint16_t padding = read_2_bytes (abfd, addr); | |
5451 | addr += 2; | |
5452 | if (padding != 0) | |
5453 | { | |
5454 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5455 | "ignoring .debug_names."), | |
5456 | filename, padding); | |
5457 | return false; | |
5458 | } | |
5459 | ||
5460 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5461 | map.cu_count = read_4_bytes (abfd, addr); | |
5462 | addr += 4; | |
5463 | ||
5464 | /* local_type_unit_count - The number of TUs in the local TU | |
5465 | list. */ | |
5466 | map.tu_count = read_4_bytes (abfd, addr); | |
5467 | addr += 4; | |
5468 | ||
5469 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5470 | list. */ | |
5471 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5472 | addr += 4; | |
5473 | if (foreign_tu_count != 0) | |
5474 | { | |
5475 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5476 | "ignoring .debug_names."), | |
5477 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5478 | return false; | |
5479 | } | |
5480 | ||
5481 | /* bucket_count - The number of hash buckets in the hash lookup | |
5482 | table. */ | |
5483 | map.bucket_count = read_4_bytes (abfd, addr); | |
5484 | addr += 4; | |
5485 | ||
5486 | /* name_count - The number of unique names in the index. */ | |
5487 | map.name_count = read_4_bytes (abfd, addr); | |
5488 | addr += 4; | |
5489 | ||
5490 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5491 | table. */ | |
5492 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5493 | addr += 4; | |
5494 | ||
5495 | /* augmentation_string_size - The size in bytes of the augmentation | |
5496 | string. This value is rounded up to a multiple of 4. */ | |
5497 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5498 | addr += 4; | |
5499 | map.augmentation_is_gdb = ((augmentation_string_size | |
5500 | == sizeof (dwarf5_augmentation)) | |
5501 | && memcmp (addr, dwarf5_augmentation, | |
5502 | sizeof (dwarf5_augmentation)) == 0); | |
5503 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5504 | addr += augmentation_string_size; | |
5505 | ||
5506 | /* List of CUs */ | |
5507 | map.cu_table_reordered = addr; | |
5508 | addr += map.cu_count * map.offset_size; | |
5509 | ||
5510 | /* List of Local TUs */ | |
5511 | map.tu_table_reordered = addr; | |
5512 | addr += map.tu_count * map.offset_size; | |
5513 | ||
5514 | /* Hash Lookup Table */ | |
5515 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5516 | addr += map.bucket_count * 4; | |
5517 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5518 | addr += map.name_count * 4; | |
5519 | ||
5520 | /* Name Table */ | |
5521 | map.name_table_string_offs_reordered = addr; | |
5522 | addr += map.name_count * map.offset_size; | |
5523 | map.name_table_entry_offs_reordered = addr; | |
5524 | addr += map.name_count * map.offset_size; | |
5525 | ||
5526 | const gdb_byte *abbrev_table_start = addr; | |
5527 | for (;;) | |
5528 | { | |
927aa2e7 JK |
5529 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5530 | addr += bytes_read; | |
5531 | if (index_num == 0) | |
5532 | break; | |
5533 | ||
5534 | const auto insertpair | |
5535 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5536 | if (!insertpair.second) | |
5537 | { | |
5538 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5539 | "ignoring .debug_names."), | |
5540 | filename, pulongest (index_num)); | |
5541 | return false; | |
5542 | } | |
5543 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5544 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5545 | addr += bytes_read; | |
5546 | ||
5547 | for (;;) | |
5548 | { | |
5549 | mapped_debug_names::index_val::attr attr; | |
5550 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5551 | addr += bytes_read; | |
5552 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5553 | addr += bytes_read; | |
5554 | if (attr.form == DW_FORM_implicit_const) | |
5555 | { | |
5556 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5557 | &bytes_read); | |
5558 | addr += bytes_read; | |
5559 | } | |
5560 | if (attr.dw_idx == 0 && attr.form == 0) | |
5561 | break; | |
5562 | indexval.attr_vec.push_back (std::move (attr)); | |
5563 | } | |
5564 | } | |
5565 | if (addr != abbrev_table_start + abbrev_table_size) | |
5566 | { | |
5567 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5568 | "of size %s vs. written as %u, ignoring .debug_names."), |
5569 | filename, plongest (addr - abbrev_table_start), | |
5570 | abbrev_table_size); | |
927aa2e7 JK |
5571 | return false; |
5572 | } | |
5573 | map.entry_pool = addr; | |
5574 | ||
5575 | return true; | |
5576 | } | |
5577 | ||
5578 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5579 | list. */ | |
5580 | ||
5581 | static void | |
ed2dc618 | 5582 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5583 | const mapped_debug_names &map, |
5584 | dwarf2_section_info §ion, | |
b76e467d | 5585 | bool is_dwz) |
927aa2e7 JK |
5586 | { |
5587 | sect_offset sect_off_prev; | |
5588 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5589 | { | |
5590 | sect_offset sect_off_next; | |
5591 | if (i < map.cu_count) | |
5592 | { | |
5593 | sect_off_next | |
5594 | = (sect_offset) (extract_unsigned_integer | |
5595 | (map.cu_table_reordered + i * map.offset_size, | |
5596 | map.offset_size, | |
5597 | map.dwarf5_byte_order)); | |
5598 | } | |
5599 | else | |
5600 | sect_off_next = (sect_offset) section.size; | |
5601 | if (i >= 1) | |
5602 | { | |
5603 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5604 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5605 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5606 | sect_off_prev, length); |
b76e467d | 5607 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5608 | } |
5609 | sect_off_prev = sect_off_next; | |
5610 | } | |
5611 | } | |
5612 | ||
5613 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5614 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5615 | |
5616 | static void | |
ed2dc618 | 5617 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5618 | const mapped_debug_names &map, |
5619 | const mapped_debug_names &dwz_map) | |
5620 | { | |
b76e467d SM |
5621 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5622 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5623 | |
ed2dc618 SM |
5624 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5625 | dwarf2_per_objfile->info, | |
b76e467d | 5626 | false /* is_dwz */); |
927aa2e7 JK |
5627 | |
5628 | if (dwz_map.cu_count == 0) | |
5629 | return; | |
5630 | ||
ed2dc618 SM |
5631 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5632 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5633 | true /* is_dwz */); |
927aa2e7 JK |
5634 | } |
5635 | ||
5636 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5637 | elements of all the CUs and return true. Otherwise, return false. */ | |
5638 | ||
5639 | static bool | |
ed2dc618 | 5640 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5641 | { |
22ca247e TT |
5642 | std::unique_ptr<mapped_debug_names> map |
5643 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5644 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5645 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5646 | |
5647 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5648 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5649 | *map)) |
927aa2e7 JK |
5650 | return false; |
5651 | ||
5652 | /* Don't use the index if it's empty. */ | |
22ca247e | 5653 | if (map->name_count == 0) |
927aa2e7 JK |
5654 | return false; |
5655 | ||
5656 | /* If there is a .dwz file, read it so we can get its CU list as | |
5657 | well. */ | |
ed2dc618 | 5658 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5659 | if (dwz != NULL) |
5660 | { | |
5661 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5662 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5663 | &dwz->debug_names, dwz_map)) |
5664 | { | |
5665 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5666 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5667 | return false; |
5668 | } | |
5669 | } | |
5670 | ||
22ca247e | 5671 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5672 | |
22ca247e | 5673 | if (map->tu_count != 0) |
927aa2e7 JK |
5674 | { |
5675 | /* We can only handle a single .debug_types when we have an | |
5676 | index. */ | |
fd5866f6 | 5677 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5678 | return false; |
5679 | ||
fd5866f6 | 5680 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5681 | |
5682 | create_signatured_type_table_from_debug_names | |
22ca247e | 5683 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5684 | } |
5685 | ||
ed2dc618 SM |
5686 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5687 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5688 | |
22ca247e | 5689 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5690 | dwarf2_per_objfile->using_index = 1; |
5691 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5692 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5693 | |
5694 | return true; | |
5695 | } | |
5696 | ||
927aa2e7 JK |
5697 | /* Type used to manage iterating over all CUs looking for a symbol for |
5698 | .debug_names. */ | |
5699 | ||
5700 | class dw2_debug_names_iterator | |
5701 | { | |
5702 | public: | |
927aa2e7 | 5703 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5704 | gdb::optional<block_enum> block_index, |
5705 | domain_enum domain, | |
927aa2e7 | 5706 | const char *name) |
2b79f376 | 5707 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5708 | m_addr (find_vec_in_debug_names (map, name)) |
5709 | {} | |
5710 | ||
5711 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5712 | search_domain search, uint32_t namei) | |
5713 | : m_map (map), | |
5714 | m_search (search), | |
5715 | m_addr (find_vec_in_debug_names (map, namei)) | |
5716 | {} | |
5717 | ||
3b00ef10 TT |
5718 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5719 | block_enum block_index, domain_enum domain, | |
5720 | uint32_t namei) | |
5721 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5722 | m_addr (find_vec_in_debug_names (map, namei)) | |
5723 | {} | |
5724 | ||
927aa2e7 JK |
5725 | /* Return the next matching CU or NULL if there are no more. */ |
5726 | dwarf2_per_cu_data *next (); | |
5727 | ||
5728 | private: | |
5729 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5730 | const char *name); | |
5731 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5732 | uint32_t namei); | |
5733 | ||
5734 | /* The internalized form of .debug_names. */ | |
5735 | const mapped_debug_names &m_map; | |
5736 | ||
2b79f376 SM |
5737 | /* If set, only look for symbols that match that block. Valid values are |
5738 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5739 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5740 | |
5741 | /* The kind of symbol we're looking for. */ | |
5742 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5743 | const search_domain m_search = ALL_DOMAIN; | |
5744 | ||
5745 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5746 | not found. */ | |
5747 | const gdb_byte *m_addr; | |
5748 | }; | |
5749 | ||
5750 | const char * | |
5751 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5752 | { | |
5753 | const ULONGEST namei_string_offs | |
5754 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5755 | + namei * offset_size), | |
5756 | offset_size, | |
5757 | dwarf5_byte_order); | |
5758 | return read_indirect_string_at_offset | |
ed2dc618 | 5759 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5760 | } |
5761 | ||
5762 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5763 | found, return pointer to its pool data. If NAME cannot be found, | |
5764 | return NULL. */ | |
5765 | ||
5766 | const gdb_byte * | |
5767 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5768 | (const mapped_debug_names &map, const char *name) | |
5769 | { | |
5770 | int (*cmp) (const char *, const char *); | |
5771 | ||
54ee4252 | 5772 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5773 | if (current_language->la_language == language_cplus |
5774 | || current_language->la_language == language_fortran | |
5775 | || current_language->la_language == language_d) | |
5776 | { | |
5777 | /* NAME is already canonical. Drop any qualifiers as | |
5778 | .debug_names does not contain any. */ | |
5779 | ||
5780 | if (strchr (name, '(') != NULL) | |
5781 | { | |
54ee4252 | 5782 | without_params = cp_remove_params (name); |
927aa2e7 | 5783 | if (without_params != NULL) |
54ee4252 | 5784 | name = without_params.get (); |
927aa2e7 JK |
5785 | } |
5786 | } | |
5787 | ||
5788 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5789 | ||
5790 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5791 | uint32_t namei | |
5792 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5793 | (map.bucket_table_reordered | |
5794 | + (full_hash % map.bucket_count)), 4, | |
5795 | map.dwarf5_byte_order); | |
5796 | if (namei == 0) | |
5797 | return NULL; | |
5798 | --namei; | |
5799 | if (namei >= map.name_count) | |
5800 | { | |
b98664d3 | 5801 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5802 | "[in module %s]"), |
5803 | namei, map.name_count, | |
ed2dc618 | 5804 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5805 | return NULL; |
5806 | } | |
5807 | ||
5808 | for (;;) | |
5809 | { | |
5810 | const uint32_t namei_full_hash | |
5811 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5812 | (map.hash_table_reordered + namei), 4, | |
5813 | map.dwarf5_byte_order); | |
5814 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5815 | return NULL; | |
5816 | ||
5817 | if (full_hash == namei_full_hash) | |
5818 | { | |
5819 | const char *const namei_string = map.namei_to_name (namei); | |
5820 | ||
5821 | #if 0 /* An expensive sanity check. */ | |
5822 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5823 | { | |
b98664d3 | 5824 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5825 | "[in module %s]"), |
5826 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5827 | return NULL; | |
5828 | } | |
5829 | #endif | |
5830 | ||
5831 | if (cmp (namei_string, name) == 0) | |
5832 | { | |
5833 | const ULONGEST namei_entry_offs | |
5834 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5835 | + namei * map.offset_size), | |
5836 | map.offset_size, map.dwarf5_byte_order); | |
5837 | return map.entry_pool + namei_entry_offs; | |
5838 | } | |
5839 | } | |
5840 | ||
5841 | ++namei; | |
5842 | if (namei >= map.name_count) | |
5843 | return NULL; | |
5844 | } | |
5845 | } | |
5846 | ||
5847 | const gdb_byte * | |
5848 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5849 | (const mapped_debug_names &map, uint32_t namei) | |
5850 | { | |
5851 | if (namei >= map.name_count) | |
5852 | { | |
b98664d3 | 5853 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5854 | "[in module %s]"), |
5855 | namei, map.name_count, | |
ed2dc618 | 5856 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5857 | return NULL; |
5858 | } | |
5859 | ||
5860 | const ULONGEST namei_entry_offs | |
5861 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5862 | + namei * map.offset_size), | |
5863 | map.offset_size, map.dwarf5_byte_order); | |
5864 | return map.entry_pool + namei_entry_offs; | |
5865 | } | |
5866 | ||
5867 | /* See dw2_debug_names_iterator. */ | |
5868 | ||
5869 | dwarf2_per_cu_data * | |
5870 | dw2_debug_names_iterator::next () | |
5871 | { | |
5872 | if (m_addr == NULL) | |
5873 | return NULL; | |
5874 | ||
ed2dc618 SM |
5875 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5876 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5877 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5878 | |
5879 | again: | |
5880 | ||
5881 | unsigned int bytes_read; | |
5882 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5883 | m_addr += bytes_read; | |
5884 | if (abbrev == 0) | |
5885 | return NULL; | |
5886 | ||
5887 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5888 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5889 | { | |
b98664d3 | 5890 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5891 | "[in module %s]"), |
ed2dc618 | 5892 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5893 | return NULL; |
5894 | } | |
5895 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5896 | enum class symbol_linkage { |
5897 | unknown, | |
5898 | static_, | |
5899 | extern_, | |
23c13d42 | 5900 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5901 | dwarf2_per_cu_data *per_cu = NULL; |
5902 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5903 | { | |
5904 | ULONGEST ull; | |
5905 | switch (attr.form) | |
5906 | { | |
5907 | case DW_FORM_implicit_const: | |
5908 | ull = attr.implicit_const; | |
5909 | break; | |
5910 | case DW_FORM_flag_present: | |
5911 | ull = 1; | |
5912 | break; | |
5913 | case DW_FORM_udata: | |
5914 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5915 | m_addr += bytes_read; | |
5916 | break; | |
5917 | default: | |
b98664d3 | 5918 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5919 | dwarf_form_name (attr.form), |
ed2dc618 | 5920 | objfile_name (objfile)); |
927aa2e7 JK |
5921 | return NULL; |
5922 | } | |
5923 | switch (attr.dw_idx) | |
5924 | { | |
5925 | case DW_IDX_compile_unit: | |
5926 | /* Don't crash on bad data. */ | |
b76e467d | 5927 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5928 | { |
b98664d3 | 5929 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5930 | " [in module %s]"), |
5931 | pulongest (ull), | |
5932 | objfile_name (dwarf2_per_objfile->objfile)); | |
5933 | continue; | |
5934 | } | |
ff4c9fec | 5935 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5936 | break; |
8af5c486 JK |
5937 | case DW_IDX_type_unit: |
5938 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5939 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5940 | { |
b98664d3 | 5941 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5942 | " [in module %s]"), |
5943 | pulongest (ull), | |
5944 | objfile_name (dwarf2_per_objfile->objfile)); | |
5945 | continue; | |
5946 | } | |
ff4c9fec | 5947 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5948 | break; |
927aa2e7 JK |
5949 | case DW_IDX_GNU_internal: |
5950 | if (!m_map.augmentation_is_gdb) | |
5951 | break; | |
23c13d42 | 5952 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5953 | break; |
5954 | case DW_IDX_GNU_external: | |
5955 | if (!m_map.augmentation_is_gdb) | |
5956 | break; | |
23c13d42 | 5957 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5958 | break; |
5959 | } | |
5960 | } | |
5961 | ||
5962 | /* Skip if already read in. */ | |
5963 | if (per_cu->v.quick->compunit_symtab) | |
5964 | goto again; | |
5965 | ||
5966 | /* Check static vs global. */ | |
23c13d42 | 5967 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5968 | { |
2b79f376 | 5969 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5970 | const bool symbol_is_static = |
5971 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5972 | if (want_static != symbol_is_static) |
2b79f376 | 5973 | goto again; |
927aa2e7 JK |
5974 | } |
5975 | ||
5976 | /* Match dw2_symtab_iter_next, symbol_kind | |
5977 | and debug_names::psymbol_tag. */ | |
5978 | switch (m_domain) | |
5979 | { | |
5980 | case VAR_DOMAIN: | |
5981 | switch (indexval.dwarf_tag) | |
5982 | { | |
5983 | case DW_TAG_variable: | |
5984 | case DW_TAG_subprogram: | |
5985 | /* Some types are also in VAR_DOMAIN. */ | |
5986 | case DW_TAG_typedef: | |
5987 | case DW_TAG_structure_type: | |
5988 | break; | |
5989 | default: | |
5990 | goto again; | |
5991 | } | |
5992 | break; | |
5993 | case STRUCT_DOMAIN: | |
5994 | switch (indexval.dwarf_tag) | |
5995 | { | |
5996 | case DW_TAG_typedef: | |
5997 | case DW_TAG_structure_type: | |
5998 | break; | |
5999 | default: | |
6000 | goto again; | |
6001 | } | |
6002 | break; | |
6003 | case LABEL_DOMAIN: | |
6004 | switch (indexval.dwarf_tag) | |
6005 | { | |
6006 | case 0: | |
6007 | case DW_TAG_variable: | |
6008 | break; | |
6009 | default: | |
6010 | goto again; | |
6011 | } | |
6012 | break; | |
59c35742 AB |
6013 | case MODULE_DOMAIN: |
6014 | switch (indexval.dwarf_tag) | |
6015 | { | |
6016 | case DW_TAG_module: | |
6017 | break; | |
6018 | default: | |
6019 | goto again; | |
6020 | } | |
6021 | break; | |
927aa2e7 JK |
6022 | default: |
6023 | break; | |
6024 | } | |
6025 | ||
6026 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6027 | debug_names::psymbol_tag. */ | |
6028 | switch (m_search) | |
4b514bc8 | 6029 | { |
927aa2e7 JK |
6030 | case VARIABLES_DOMAIN: |
6031 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6032 | { |
927aa2e7 JK |
6033 | case DW_TAG_variable: |
6034 | break; | |
6035 | default: | |
6036 | goto again; | |
4b514bc8 | 6037 | } |
927aa2e7 JK |
6038 | break; |
6039 | case FUNCTIONS_DOMAIN: | |
6040 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6041 | { |
927aa2e7 JK |
6042 | case DW_TAG_subprogram: |
6043 | break; | |
6044 | default: | |
6045 | goto again; | |
4b514bc8 | 6046 | } |
927aa2e7 JK |
6047 | break; |
6048 | case TYPES_DOMAIN: | |
6049 | switch (indexval.dwarf_tag) | |
6050 | { | |
6051 | case DW_TAG_typedef: | |
6052 | case DW_TAG_structure_type: | |
6053 | break; | |
6054 | default: | |
6055 | goto again; | |
6056 | } | |
6057 | break; | |
59c35742 AB |
6058 | case MODULES_DOMAIN: |
6059 | switch (indexval.dwarf_tag) | |
6060 | { | |
6061 | case DW_TAG_module: | |
6062 | break; | |
6063 | default: | |
6064 | goto again; | |
6065 | } | |
927aa2e7 JK |
6066 | default: |
6067 | break; | |
4b514bc8 | 6068 | } |
927aa2e7 JK |
6069 | |
6070 | return per_cu; | |
4b514bc8 | 6071 | } |
61920122 | 6072 | |
927aa2e7 | 6073 | static struct compunit_symtab * |
c7f839cb | 6074 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 6075 | const char *name, domain_enum domain) |
4b514bc8 | 6076 | { |
ed2dc618 SM |
6077 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6078 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6079 | |
927aa2e7 JK |
6080 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6081 | if (!mapp) | |
61920122 | 6082 | { |
927aa2e7 JK |
6083 | /* index is NULL if OBJF_READNOW. */ |
6084 | return NULL; | |
6085 | } | |
6086 | const auto &map = *mapp; | |
9291a0cd | 6087 | |
2b79f376 | 6088 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 6089 | |
927aa2e7 JK |
6090 | struct compunit_symtab *stab_best = NULL; |
6091 | struct dwarf2_per_cu_data *per_cu; | |
6092 | while ((per_cu = iter.next ()) != NULL) | |
6093 | { | |
6094 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6095 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 6096 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 6097 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 6098 | |
927aa2e7 JK |
6099 | sym = block_find_symbol (block, name, domain, |
6100 | block_find_non_opaque_type_preferred, | |
6101 | &with_opaque); | |
9703b513 | 6102 | |
927aa2e7 JK |
6103 | /* Some caution must be observed with overloaded functions and |
6104 | methods, since the index will not contain any overload | |
6105 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6106 | |
927aa2e7 | 6107 | if (sym != NULL |
987012b8 | 6108 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
6109 | return stab; |
6110 | if (with_opaque != NULL | |
987012b8 | 6111 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 6112 | stab_best = stab; |
9703b513 | 6113 | |
927aa2e7 | 6114 | /* Keep looking through other CUs. */ |
9703b513 TT |
6115 | } |
6116 | ||
927aa2e7 | 6117 | return stab_best; |
9703b513 TT |
6118 | } |
6119 | ||
927aa2e7 JK |
6120 | /* This dumps minimal information about .debug_names. It is called |
6121 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6122 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6123 | |
927aa2e7 JK |
6124 | static void |
6125 | dw2_debug_names_dump (struct objfile *objfile) | |
6126 | { | |
ed2dc618 SM |
6127 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6128 | = get_dwarf2_per_objfile (objfile); | |
6129 | ||
927aa2e7 JK |
6130 | gdb_assert (dwarf2_per_objfile->using_index); |
6131 | printf_filtered (".debug_names:"); | |
6132 | if (dwarf2_per_objfile->debug_names_table) | |
6133 | printf_filtered (" exists\n"); | |
6134 | else | |
6135 | printf_filtered (" faked for \"readnow\"\n"); | |
6136 | printf_filtered ("\n"); | |
9291a0cd TT |
6137 | } |
6138 | ||
9291a0cd | 6139 | static void |
927aa2e7 JK |
6140 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6141 | const char *func_name) | |
9291a0cd | 6142 | { |
ed2dc618 SM |
6143 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6144 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6145 | |
927aa2e7 JK |
6146 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6147 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6148 | { |
927aa2e7 | 6149 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6150 | |
2b79f376 | 6151 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 6152 | |
927aa2e7 JK |
6153 | struct dwarf2_per_cu_data *per_cu; |
6154 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6155 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6156 | } |
6157 | } | |
24c79950 | 6158 | |
3b00ef10 TT |
6159 | static void |
6160 | dw2_debug_names_map_matching_symbols | |
6161 | (struct objfile *objfile, | |
6162 | const lookup_name_info &name, domain_enum domain, | |
6163 | int global, | |
6164 | gdb::function_view<symbol_found_callback_ftype> callback, | |
6165 | symbol_compare_ftype *ordered_compare) | |
6166 | { | |
6167 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
6168 | = get_dwarf2_per_objfile (objfile); | |
6169 | ||
6170 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
6171 | if (!dwarf2_per_objfile->debug_names_table) | |
6172 | return; | |
6173 | ||
6174 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
6175 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
6176 | ||
6177 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
6178 | auto matcher = [&] (const char *symname) | |
6179 | { | |
6180 | if (ordered_compare == nullptr) | |
6181 | return true; | |
6182 | return ordered_compare (symname, match_name) == 0; | |
6183 | }; | |
6184 | ||
6185 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
6186 | [&] (offset_type namei) | |
6187 | { | |
6188 | /* The name was matched, now expand corresponding CUs that were | |
6189 | marked. */ | |
6190 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
6191 | ||
6192 | struct dwarf2_per_cu_data *per_cu; | |
6193 | while ((per_cu = iter.next ()) != NULL) | |
6194 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
6195 | return true; | |
6196 | }); | |
6197 | ||
6198 | /* It's a shame we couldn't do this inside the | |
6199 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
6200 | that have already been expanded. Instead, this loop matches what | |
6201 | the psymtab code does. */ | |
6202 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
6203 | { | |
6204 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
6205 | if (cust != nullptr) | |
6206 | { | |
6207 | const struct block *block | |
6208 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
6209 | if (!iterate_over_symbols_terminated (block, name, | |
6210 | domain, callback)) | |
6211 | break; | |
6212 | } | |
6213 | } | |
6214 | } | |
6215 | ||
927aa2e7 JK |
6216 | static void |
6217 | dw2_debug_names_expand_symtabs_matching | |
6218 | (struct objfile *objfile, | |
6219 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6220 | const lookup_name_info &lookup_name, | |
6221 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6222 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6223 | enum search_domain kind) | |
6224 | { | |
ed2dc618 SM |
6225 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6226 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6227 | |
927aa2e7 JK |
6228 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6229 | if (!dwarf2_per_objfile->debug_names_table) | |
6230 | return; | |
9291a0cd | 6231 | |
ed2dc618 | 6232 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6233 | |
44ed8f3e | 6234 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6235 | |
44ed8f3e PA |
6236 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6237 | symbol_matcher, | |
6238 | kind, [&] (offset_type namei) | |
927aa2e7 | 6239 | { |
927aa2e7 JK |
6240 | /* The name was matched, now expand corresponding CUs that were |
6241 | marked. */ | |
6242 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6243 | |
927aa2e7 JK |
6244 | struct dwarf2_per_cu_data *per_cu; |
6245 | while ((per_cu = iter.next ()) != NULL) | |
6246 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6247 | expansion_notify); | |
3b00ef10 | 6248 | return true; |
44ed8f3e | 6249 | }); |
9291a0cd TT |
6250 | } |
6251 | ||
927aa2e7 | 6252 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6253 | { |
6254 | dw2_has_symbols, | |
6255 | dw2_find_last_source_symtab, | |
6256 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6257 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6258 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6259 | dw2_print_stats, |
927aa2e7 | 6260 | dw2_debug_names_dump, |
927aa2e7 | 6261 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6262 | dw2_expand_all_symtabs, |
652a8996 | 6263 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 6264 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 6265 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6266 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6267 | NULL, |
9291a0cd TT |
6268 | dw2_map_symbol_filenames |
6269 | }; | |
6270 | ||
4485a1c1 SM |
6271 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
6272 | to either a dwarf2_per_objfile or dwz_file object. */ | |
6273 | ||
6274 | template <typename T> | |
6275 | static gdb::array_view<const gdb_byte> | |
6276 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6277 | { | |
6278 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6279 | ||
6280 | if (dwarf2_section_empty_p (section)) | |
6281 | return {}; | |
6282 | ||
6283 | /* Older elfutils strip versions could keep the section in the main | |
6284 | executable while splitting it for the separate debug info file. */ | |
6285 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
6286 | return {}; | |
6287 | ||
6288 | dwarf2_read_section (obj, section); | |
6289 | ||
8bebfcda PA |
6290 | /* dwarf2_section_info::size is a bfd_size_type, while |
6291 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6292 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6293 | is 32-bit. So we need an explicit narrowing conversion here. | |
6294 | This is fine, because it's impossible to allocate or mmap an | |
6295 | array/buffer larger than what size_t can represent. */ | |
6296 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6297 | } |
6298 | ||
87d6a7aa SM |
6299 | /* Lookup the index cache for the contents of the index associated to |
6300 | DWARF2_OBJ. */ | |
6301 | ||
6302 | static gdb::array_view<const gdb_byte> | |
6303 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
6304 | { | |
6305 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6306 | if (build_id == nullptr) | |
6307 | return {}; | |
6308 | ||
6309 | return global_index_cache.lookup_gdb_index (build_id, | |
6310 | &dwarf2_obj->index_cache_res); | |
6311 | } | |
6312 | ||
6313 | /* Same as the above, but for DWZ. */ | |
6314 | ||
6315 | static gdb::array_view<const gdb_byte> | |
6316 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6317 | { | |
6318 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6319 | if (build_id == nullptr) | |
6320 | return {}; | |
6321 | ||
6322 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6323 | } | |
6324 | ||
3c0aa29a | 6325 | /* See symfile.h. */ |
9291a0cd | 6326 | |
3c0aa29a PA |
6327 | bool |
6328 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6329 | { |
ed2dc618 SM |
6330 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6331 | = get_dwarf2_per_objfile (objfile); | |
6332 | ||
9291a0cd TT |
6333 | /* If we're about to read full symbols, don't bother with the |
6334 | indices. In this case we also don't care if some other debug | |
6335 | format is making psymtabs, because they are all about to be | |
6336 | expanded anyway. */ | |
6337 | if ((objfile->flags & OBJF_READNOW)) | |
6338 | { | |
9291a0cd | 6339 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6340 | create_all_comp_units (dwarf2_per_objfile); |
6341 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6342 | dwarf2_per_objfile->quick_file_names_table |
6343 | = create_quick_file_names_table | |
6344 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6345 | |
b76e467d | 6346 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6347 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6348 | { |
ff4c9fec | 6349 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6350 | |
e254ef6a DE |
6351 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6352 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6353 | } |
6354 | ||
6355 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6356 | these functions will be no-ops because we will have expanded | |
6357 | all symtabs. */ | |
3c0aa29a PA |
6358 | *index_kind = dw_index_kind::GDB_INDEX; |
6359 | return true; | |
9291a0cd TT |
6360 | } |
6361 | ||
ed2dc618 | 6362 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6363 | { |
6364 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6365 | return true; | |
6366 | } | |
927aa2e7 | 6367 | |
4485a1c1 SM |
6368 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6369 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6370 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6371 | { |
6372 | *index_kind = dw_index_kind::GDB_INDEX; | |
6373 | return true; | |
6374 | } | |
9291a0cd | 6375 | |
87d6a7aa SM |
6376 | /* ... otherwise, try to find the index in the index cache. */ |
6377 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6378 | get_gdb_index_contents_from_cache, | |
6379 | get_gdb_index_contents_from_cache_dwz)) | |
6380 | { | |
6381 | global_index_cache.hit (); | |
6382 | *index_kind = dw_index_kind::GDB_INDEX; | |
6383 | return true; | |
6384 | } | |
6385 | ||
6386 | global_index_cache.miss (); | |
3c0aa29a | 6387 | return false; |
9291a0cd TT |
6388 | } |
6389 | ||
6390 | \f | |
6391 | ||
dce234bc PP |
6392 | /* Build a partial symbol table. */ |
6393 | ||
6394 | void | |
f29dff0a | 6395 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6396 | { |
ed2dc618 SM |
6397 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6398 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6399 | |
6eee24ce | 6400 | init_psymbol_list (objfile, 1024); |
c906108c | 6401 | |
a70b8144 | 6402 | try |
c9bf0622 TT |
6403 | { |
6404 | /* This isn't really ideal: all the data we allocate on the | |
6405 | objfile's obstack is still uselessly kept around. However, | |
6406 | freeing it seems unsafe. */ | |
906768f9 | 6407 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6408 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6409 | psymtabs.keep (); |
87d6a7aa SM |
6410 | |
6411 | /* (maybe) store an index in the cache. */ | |
6412 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6413 | } |
230d2906 | 6414 | catch (const gdb_exception_error &except) |
492d29ea PA |
6415 | { |
6416 | exception_print (gdb_stderr, except); | |
6417 | } | |
c906108c | 6418 | } |
c906108c | 6419 | |
1ce1cefd DE |
6420 | /* Return the total length of the CU described by HEADER. */ |
6421 | ||
6422 | static unsigned int | |
6423 | get_cu_length (const struct comp_unit_head *header) | |
6424 | { | |
6425 | return header->initial_length_size + header->length; | |
6426 | } | |
6427 | ||
9c541725 | 6428 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6429 | |
9c541725 PA |
6430 | static inline bool |
6431 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6432 | { |
9c541725 PA |
6433 | sect_offset bottom = cu_header->sect_off; |
6434 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6435 | |
9c541725 | 6436 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6437 | } |
6438 | ||
3b80fe9b DE |
6439 | /* Find the base address of the compilation unit for range lists and |
6440 | location lists. It will normally be specified by DW_AT_low_pc. | |
6441 | In DWARF-3 draft 4, the base address could be overridden by | |
6442 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6443 | compilation units with discontinuous ranges. */ | |
6444 | ||
6445 | static void | |
6446 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6447 | { | |
6448 | struct attribute *attr; | |
6449 | ||
6450 | cu->base_known = 0; | |
6451 | cu->base_address = 0; | |
6452 | ||
6453 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6454 | if (attr != nullptr) |
3b80fe9b | 6455 | { |
31aa7e4e | 6456 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6457 | cu->base_known = 1; |
6458 | } | |
6459 | else | |
6460 | { | |
6461 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6462 | if (attr != nullptr) |
3b80fe9b | 6463 | { |
31aa7e4e | 6464 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6465 | cu->base_known = 1; |
6466 | } | |
6467 | } | |
6468 | } | |
6469 | ||
93311388 | 6470 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6471 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6472 | NOTE: This leaves members offset, first_die_offset to be filled in |
6473 | by the caller. */ | |
107d2387 | 6474 | |
d521ce57 | 6475 | static const gdb_byte * |
107d2387 | 6476 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6477 | const gdb_byte *info_ptr, |
6478 | struct dwarf2_section_info *section, | |
6479 | rcuh_kind section_kind) | |
107d2387 AC |
6480 | { |
6481 | int signed_addr; | |
891d2f0b | 6482 | unsigned int bytes_read; |
43988095 JK |
6483 | const char *filename = get_section_file_name (section); |
6484 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6485 | |
6486 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6487 | cu_header->initial_length_size = bytes_read; | |
6488 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6489 | info_ptr += bytes_read; |
107d2387 | 6490 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6491 | if (cu_header->version < 2 || cu_header->version > 5) |
6492 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6493 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6494 | cu_header->version, filename); | |
107d2387 | 6495 | info_ptr += 2; |
43988095 JK |
6496 | if (cu_header->version < 5) |
6497 | switch (section_kind) | |
6498 | { | |
6499 | case rcuh_kind::COMPILE: | |
6500 | cu_header->unit_type = DW_UT_compile; | |
6501 | break; | |
6502 | case rcuh_kind::TYPE: | |
6503 | cu_header->unit_type = DW_UT_type; | |
6504 | break; | |
6505 | default: | |
6506 | internal_error (__FILE__, __LINE__, | |
6507 | _("read_comp_unit_head: invalid section_kind")); | |
6508 | } | |
6509 | else | |
6510 | { | |
6511 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6512 | (read_1_byte (abfd, info_ptr)); | |
6513 | info_ptr += 1; | |
6514 | switch (cu_header->unit_type) | |
6515 | { | |
6516 | case DW_UT_compile: | |
a084a2a6 AT |
6517 | case DW_UT_partial: |
6518 | case DW_UT_skeleton: | |
6519 | case DW_UT_split_compile: | |
43988095 JK |
6520 | if (section_kind != rcuh_kind::COMPILE) |
6521 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6522 | "(is %s, should be %s) [in module %s]"), |
6523 | dwarf_unit_type_name (cu_header->unit_type), | |
6524 | dwarf_unit_type_name (DW_UT_type), filename); | |
43988095 JK |
6525 | break; |
6526 | case DW_UT_type: | |
a084a2a6 | 6527 | case DW_UT_split_type: |
43988095 JK |
6528 | section_kind = rcuh_kind::TYPE; |
6529 | break; | |
6530 | default: | |
6531 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6532 | "(is %#04x, should be one of: %s, %s, %s, %s or %s) " |
6533 | "[in module %s]"), cu_header->unit_type, | |
6534 | dwarf_unit_type_name (DW_UT_compile), | |
6535 | dwarf_unit_type_name (DW_UT_skeleton), | |
6536 | dwarf_unit_type_name (DW_UT_split_compile), | |
6537 | dwarf_unit_type_name (DW_UT_type), | |
6538 | dwarf_unit_type_name (DW_UT_split_type), filename); | |
43988095 JK |
6539 | } |
6540 | ||
6541 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6542 | info_ptr += 1; | |
6543 | } | |
9c541725 PA |
6544 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6545 | cu_header, | |
6546 | &bytes_read); | |
613e1657 | 6547 | info_ptr += bytes_read; |
43988095 JK |
6548 | if (cu_header->version < 5) |
6549 | { | |
6550 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6551 | info_ptr += 1; | |
6552 | } | |
107d2387 AC |
6553 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6554 | if (signed_addr < 0) | |
8e65ff28 | 6555 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6556 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6557 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6558 | |
a084a2a6 AT |
6559 | bool header_has_signature = section_kind == rcuh_kind::TYPE |
6560 | || cu_header->unit_type == DW_UT_skeleton | |
6561 | || cu_header->unit_type == DW_UT_split_compile; | |
43988095 | 6562 | |
a084a2a6 AT |
6563 | if (header_has_signature) |
6564 | { | |
43988095 JK |
6565 | cu_header->signature = read_8_bytes (abfd, info_ptr); |
6566 | info_ptr += 8; | |
a084a2a6 | 6567 | } |
43988095 | 6568 | |
a084a2a6 AT |
6569 | if (section_kind == rcuh_kind::TYPE) |
6570 | { | |
6571 | LONGEST type_offset; | |
43988095 JK |
6572 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); |
6573 | info_ptr += bytes_read; | |
9c541725 PA |
6574 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6575 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6576 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6577 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6578 | filename); | |
6579 | } | |
6580 | ||
107d2387 AC |
6581 | return info_ptr; |
6582 | } | |
6583 | ||
36586728 TT |
6584 | /* Helper function that returns the proper abbrev section for |
6585 | THIS_CU. */ | |
6586 | ||
6587 | static struct dwarf2_section_info * | |
6588 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6589 | { | |
6590 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6591 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6592 | |
6593 | if (this_cu->is_dwz) | |
ed2dc618 | 6594 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6595 | else |
6596 | abbrev = &dwarf2_per_objfile->abbrev; | |
6597 | ||
6598 | return abbrev; | |
6599 | } | |
6600 | ||
9ff913ba DE |
6601 | /* Subroutine of read_and_check_comp_unit_head and |
6602 | read_and_check_type_unit_head to simplify them. | |
6603 | Perform various error checking on the header. */ | |
6604 | ||
6605 | static void | |
ed2dc618 SM |
6606 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6607 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6608 | struct dwarf2_section_info *section, |
6609 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6610 | { |
a32a8923 | 6611 | const char *filename = get_section_file_name (section); |
9ff913ba | 6612 | |
9c541725 | 6613 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6614 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6615 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6616 | "(offset %s + 6) [in module %s]"), | |
6617 | sect_offset_str (header->abbrev_sect_off), | |
6618 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6619 | filename); |
6620 | ||
9c541725 | 6621 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6622 | avoid potential 32-bit overflow. */ |
9c541725 | 6623 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6624 | > section->size) |
9c541725 | 6625 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6626 | "(offset %s + 0) [in module %s]"), |
6627 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6628 | filename); |
6629 | } | |
6630 | ||
6631 | /* Read in a CU/TU header and perform some basic error checking. | |
6632 | The contents of the header are stored in HEADER. | |
6633 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6634 | |
d521ce57 | 6635 | static const gdb_byte * |
ed2dc618 SM |
6636 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6637 | struct comp_unit_head *header, | |
9ff913ba | 6638 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6639 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6640 | const gdb_byte *info_ptr, |
43988095 | 6641 | rcuh_kind section_kind) |
72bf9492 | 6642 | { |
d521ce57 | 6643 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6644 | |
9c541725 | 6645 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6646 | |
43988095 | 6647 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6648 | |
9c541725 | 6649 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6650 | |
ed2dc618 SM |
6651 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6652 | abbrev_section); | |
9ff913ba DE |
6653 | |
6654 | return info_ptr; | |
348e048f DE |
6655 | } |
6656 | ||
f4dc4d17 DE |
6657 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6658 | ||
6659 | static sect_offset | |
ed2dc618 SM |
6660 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6661 | struct dwarf2_section_info *section, | |
9c541725 | 6662 | sect_offset sect_off) |
f4dc4d17 | 6663 | { |
a32a8923 | 6664 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6665 | const gdb_byte *info_ptr; |
ac298888 | 6666 | unsigned int initial_length_size, offset_size; |
43988095 | 6667 | uint16_t version; |
f4dc4d17 DE |
6668 | |
6669 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6670 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6671 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6672 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6673 | info_ptr += initial_length_size; |
6674 | ||
6675 | version = read_2_bytes (abfd, info_ptr); | |
6676 | info_ptr += 2; | |
6677 | if (version >= 5) | |
6678 | { | |
6679 | /* Skip unit type and address size. */ | |
6680 | info_ptr += 2; | |
6681 | } | |
6682 | ||
9c541725 | 6683 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6684 | } |
6685 | ||
aaa75496 JB |
6686 | /* Allocate a new partial symtab for file named NAME and mark this new |
6687 | partial symtab as being an include of PST. */ | |
6688 | ||
6689 | static void | |
891813be | 6690 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6691 | struct objfile *objfile) |
6692 | { | |
891813be | 6693 | dwarf2_psymtab *subpst = new dwarf2_psymtab (name, objfile); |
aaa75496 | 6694 | |
fbd9ab74 JK |
6695 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6696 | { | |
6697 | /* It shares objfile->objfile_obstack. */ | |
6698 | subpst->dirname = pst->dirname; | |
6699 | } | |
6700 | ||
a9342b62 | 6701 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6702 | subpst->dependencies[0] = pst; |
6703 | subpst->number_of_dependencies = 1; | |
6704 | ||
aaa75496 JB |
6705 | /* No private part is necessary for include psymtabs. This property |
6706 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6707 | the regular ones. */ |
891813be | 6708 | subpst->per_cu_data = nullptr; |
aaa75496 JB |
6709 | } |
6710 | ||
6711 | /* Read the Line Number Program data and extract the list of files | |
6712 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6713 | partial symtab for each of these included files. */ |
aaa75496 JB |
6714 | |
6715 | static void | |
6716 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6717 | struct die_info *die, |
891813be | 6718 | dwarf2_psymtab *pst) |
aaa75496 | 6719 | { |
fff8551c | 6720 | line_header_up lh; |
d85a05f0 | 6721 | struct attribute *attr; |
aaa75496 | 6722 | |
d85a05f0 | 6723 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6724 | if (attr != nullptr) |
9c541725 | 6725 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6726 | if (lh == NULL) |
6727 | return; /* No linetable, so no includes. */ | |
6728 | ||
79748972 TT |
6729 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6730 | that we pass in the raw text_low here; that is ok because we're | |
6731 | only decoding the line table to make include partial symtabs, and | |
6732 | so the addresses aren't really used. */ | |
4ae976d1 | 6733 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6734 | pst->raw_text_low (), 1); |
aaa75496 JB |
6735 | } |
6736 | ||
348e048f | 6737 | static hashval_t |
52dc124a | 6738 | hash_signatured_type (const void *item) |
348e048f | 6739 | { |
9a3c8263 SM |
6740 | const struct signatured_type *sig_type |
6741 | = (const struct signatured_type *) item; | |
9a619af0 | 6742 | |
348e048f | 6743 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6744 | return sig_type->signature; |
348e048f DE |
6745 | } |
6746 | ||
6747 | static int | |
52dc124a | 6748 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6749 | { |
9a3c8263 SM |
6750 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6751 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6752 | |
348e048f DE |
6753 | return lhs->signature == rhs->signature; |
6754 | } | |
6755 | ||
1fd400ff TT |
6756 | /* Allocate a hash table for signatured types. */ |
6757 | ||
6758 | static htab_t | |
673bfd45 | 6759 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6760 | { |
6761 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6762 | hash_signatured_type, |
6763 | eq_signatured_type, | |
1fd400ff TT |
6764 | NULL, |
6765 | &objfile->objfile_obstack, | |
6766 | hashtab_obstack_allocate, | |
6767 | dummy_obstack_deallocate); | |
6768 | } | |
6769 | ||
d467dd73 | 6770 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6771 | |
6772 | static int | |
d467dd73 | 6773 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6774 | { |
9a3c8263 | 6775 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6776 | std::vector<signatured_type *> *all_type_units |
6777 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6778 | |
b2bdb8cf | 6779 | all_type_units->push_back (sigt); |
1fd400ff TT |
6780 | |
6781 | return 1; | |
6782 | } | |
6783 | ||
78d4d2c5 | 6784 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6785 | and fill them into TYPES_HTAB. It will process only type units, |
6786 | therefore DW_UT_type. */ | |
c88ee1f0 | 6787 | |
78d4d2c5 | 6788 | static void |
ed2dc618 SM |
6789 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6790 | struct dwo_file *dwo_file, | |
43988095 JK |
6791 | dwarf2_section_info *section, htab_t &types_htab, |
6792 | rcuh_kind section_kind) | |
348e048f | 6793 | { |
3019eac3 | 6794 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6795 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6796 | bfd *abfd; |
6797 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6798 | |
4bdcc0c1 DE |
6799 | abbrev_section = (dwo_file != NULL |
6800 | ? &dwo_file->sections.abbrev | |
6801 | : &dwarf2_per_objfile->abbrev); | |
6802 | ||
b4f54984 | 6803 | if (dwarf_read_debug) |
43988095 JK |
6804 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6805 | get_section_name (section), | |
a32a8923 | 6806 | get_section_file_name (abbrev_section)); |
09406207 | 6807 | |
78d4d2c5 JK |
6808 | dwarf2_read_section (objfile, section); |
6809 | info_ptr = section->buffer; | |
348e048f | 6810 | |
78d4d2c5 JK |
6811 | if (info_ptr == NULL) |
6812 | return; | |
348e048f | 6813 | |
78d4d2c5 JK |
6814 | /* We can't set abfd until now because the section may be empty or |
6815 | not present, in which case the bfd is unknown. */ | |
6816 | abfd = get_section_bfd_owner (section); | |
348e048f | 6817 | |
c0ab21c2 TT |
6818 | /* We don't use cutu_reader here because we don't need to read |
6819 | any dies: the signature is in the header. */ | |
3019eac3 | 6820 | |
78d4d2c5 JK |
6821 | end_ptr = info_ptr + section->size; |
6822 | while (info_ptr < end_ptr) | |
6823 | { | |
78d4d2c5 JK |
6824 | struct signatured_type *sig_type; |
6825 | struct dwo_unit *dwo_tu; | |
6826 | void **slot; | |
6827 | const gdb_byte *ptr = info_ptr; | |
6828 | struct comp_unit_head header; | |
6829 | unsigned int length; | |
8b70b953 | 6830 | |
9c541725 | 6831 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6832 | |
a49dd8dd JK |
6833 | /* Initialize it due to a false compiler warning. */ |
6834 | header.signature = -1; | |
9c541725 | 6835 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6836 | |
78d4d2c5 JK |
6837 | /* We need to read the type's signature in order to build the hash |
6838 | table, but we don't need anything else just yet. */ | |
348e048f | 6839 | |
ed2dc618 | 6840 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6841 | abbrev_section, ptr, section_kind); |
348e048f | 6842 | |
78d4d2c5 | 6843 | length = get_cu_length (&header); |
6caca83c | 6844 | |
78d4d2c5 JK |
6845 | /* Skip dummy type units. */ |
6846 | if (ptr >= info_ptr + length | |
43988095 JK |
6847 | || peek_abbrev_code (abfd, ptr) == 0 |
6848 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6849 | { |
6850 | info_ptr += length; | |
6851 | continue; | |
6852 | } | |
dee91e82 | 6853 | |
78d4d2c5 JK |
6854 | if (types_htab == NULL) |
6855 | { | |
6856 | if (dwo_file) | |
6857 | types_htab = allocate_dwo_unit_table (objfile); | |
6858 | else | |
6859 | types_htab = allocate_signatured_type_table (objfile); | |
6860 | } | |
8b70b953 | 6861 | |
78d4d2c5 JK |
6862 | if (dwo_file) |
6863 | { | |
6864 | sig_type = NULL; | |
6865 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6866 | struct dwo_unit); | |
6867 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6868 | dwo_tu->signature = header.signature; |
9c541725 | 6869 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6870 | dwo_tu->section = section; |
9c541725 | 6871 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6872 | dwo_tu->length = length; |
6873 | } | |
6874 | else | |
6875 | { | |
6876 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6877 | The real type_offset is in the DWO file. */ | |
6878 | dwo_tu = NULL; | |
6879 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6880 | struct signatured_type); | |
43988095 | 6881 | sig_type->signature = header.signature; |
9c541725 | 6882 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6883 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6884 | sig_type->per_cu.is_debug_types = 1; |
6885 | sig_type->per_cu.section = section; | |
9c541725 | 6886 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6887 | sig_type->per_cu.length = length; |
6888 | } | |
6889 | ||
6890 | slot = htab_find_slot (types_htab, | |
6891 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6892 | INSERT); | |
6893 | gdb_assert (slot != NULL); | |
6894 | if (*slot != NULL) | |
6895 | { | |
9c541725 | 6896 | sect_offset dup_sect_off; |
0349ea22 | 6897 | |
3019eac3 DE |
6898 | if (dwo_file) |
6899 | { | |
78d4d2c5 JK |
6900 | const struct dwo_unit *dup_tu |
6901 | = (const struct dwo_unit *) *slot; | |
6902 | ||
9c541725 | 6903 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6904 | } |
6905 | else | |
6906 | { | |
78d4d2c5 JK |
6907 | const struct signatured_type *dup_tu |
6908 | = (const struct signatured_type *) *slot; | |
6909 | ||
9c541725 | 6910 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6911 | } |
8b70b953 | 6912 | |
b98664d3 | 6913 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6914 | " the entry at offset %s, signature %s"), |
6915 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6916 | hex_string (header.signature)); |
78d4d2c5 JK |
6917 | } |
6918 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6919 | |
78d4d2c5 | 6920 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6921 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6922 | sect_offset_str (sect_off), | |
43988095 | 6923 | hex_string (header.signature)); |
3019eac3 | 6924 | |
78d4d2c5 JK |
6925 | info_ptr += length; |
6926 | } | |
6927 | } | |
3019eac3 | 6928 | |
78d4d2c5 JK |
6929 | /* Create the hash table of all entries in the .debug_types |
6930 | (or .debug_types.dwo) section(s). | |
6931 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6932 | otherwise it is NULL. | |
b3c8eb43 | 6933 | |
78d4d2c5 | 6934 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6935 | |
78d4d2c5 | 6936 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6937 | |
78d4d2c5 | 6938 | static void |
ed2dc618 SM |
6939 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6940 | struct dwo_file *dwo_file, | |
fd5866f6 | 6941 | gdb::array_view<dwarf2_section_info> type_sections, |
78d4d2c5 JK |
6942 | htab_t &types_htab) |
6943 | { | |
fd5866f6 SM |
6944 | for (dwarf2_section_info §ion : type_sections) |
6945 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6946 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6947 | } |
6948 | ||
6949 | /* Create the hash table of all entries in the .debug_types section, | |
6950 | and initialize all_type_units. | |
6951 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6952 | otherwise non-zero. */ | |
6953 | ||
6954 | static int | |
ed2dc618 | 6955 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6956 | { |
78d4d2c5 | 6957 | htab_t types_htab = NULL; |
3019eac3 | 6958 | |
ed2dc618 SM |
6959 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6960 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6961 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6962 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6963 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6964 | if (types_htab == NULL) |
6965 | { | |
6966 | dwarf2_per_objfile->signatured_types = NULL; | |
6967 | return 0; | |
6968 | } | |
6969 | ||
348e048f DE |
6970 | dwarf2_per_objfile->signatured_types = types_htab; |
6971 | ||
b2bdb8cf SM |
6972 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6973 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6974 | ||
6975 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6976 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6977 | |
348e048f DE |
6978 | return 1; |
6979 | } | |
6980 | ||
6aa5f3a6 DE |
6981 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6982 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6983 | Otherwise we find one. */ | |
6984 | ||
6985 | static struct signatured_type * | |
ed2dc618 SM |
6986 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6987 | void **slot) | |
6aa5f3a6 DE |
6988 | { |
6989 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6990 | |
b2bdb8cf SM |
6991 | if (dwarf2_per_objfile->all_type_units.size () |
6992 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6993 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6994 | |
b2bdb8cf SM |
6995 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6996 | struct signatured_type); | |
6997 | ||
6998 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6999 | sig_type->signature = sig; |
7000 | sig_type->per_cu.is_debug_types = 1; | |
7001 | if (dwarf2_per_objfile->using_index) | |
7002 | { | |
7003 | sig_type->per_cu.v.quick = | |
7004 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7005 | struct dwarf2_per_cu_quick_data); | |
7006 | } | |
7007 | ||
7008 | if (slot == NULL) | |
7009 | { | |
7010 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7011 | sig_type, INSERT); | |
7012 | } | |
7013 | gdb_assert (*slot == NULL); | |
7014 | *slot = sig_type; | |
7015 | /* The rest of sig_type must be filled in by the caller. */ | |
7016 | return sig_type; | |
7017 | } | |
7018 | ||
a2ce51a0 DE |
7019 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
7020 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
7021 | ||
7022 | static void | |
ed2dc618 | 7023 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
7024 | struct signatured_type *sig_entry, |
7025 | struct dwo_unit *dwo_entry) | |
7026 | { | |
7ee85ab1 | 7027 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
7028 | gdb_assert (! sig_entry->per_cu.queued); |
7029 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
7030 | if (dwarf2_per_objfile->using_index) |
7031 | { | |
7032 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 7033 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
7034 | } |
7035 | else | |
7036 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 7037 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 7038 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 7039 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
7040 | gdb_assert (sig_entry->dwo_unit == NULL); |
7041 | ||
7042 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 7043 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
7044 | sig_entry->per_cu.length = dwo_entry->length; |
7045 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 7046 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
7047 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
7048 | sig_entry->dwo_unit = dwo_entry; | |
7049 | } | |
7050 | ||
7051 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
7052 | If we haven't read the TU yet, create the signatured_type data structure |
7053 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
7054 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
7055 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
7056 | containing that CU. Otherwise we could end up reading several other DWO | |
7057 | files (due to comdat folding) to process the transitive closure of all the | |
7058 | mentioned TUs, and that can be slow. The current DWO file will have every | |
7059 | type signature that it needs. | |
a2ce51a0 DE |
7060 | We only do this for .gdb_index because in the psymtab case we already have |
7061 | to read all the DWOs to build the type unit groups. */ | |
7062 | ||
7063 | static struct signatured_type * | |
7064 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7065 | { | |
518817b3 SM |
7066 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7067 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
7068 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7069 | struct dwo_file *dwo_file; | |
7070 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
7071 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7072 | void **slot; |
a2ce51a0 DE |
7073 | |
7074 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7075 | ||
6aa5f3a6 DE |
7076 | /* If TU skeletons have been removed then we may not have read in any |
7077 | TUs yet. */ | |
7078 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7079 | { | |
7080 | dwarf2_per_objfile->signatured_types | |
7081 | = allocate_signatured_type_table (objfile); | |
7082 | } | |
a2ce51a0 DE |
7083 | |
7084 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7085 | Use the global signatured_types array to do our own comdat-folding |
7086 | of types. If this is the first time we're reading this TU, and | |
7087 | the TU has an entry in .gdb_index, replace the recorded data from | |
7088 | .gdb_index with this TU. */ | |
a2ce51a0 | 7089 | |
a2ce51a0 | 7090 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7091 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7092 | &find_sig_entry, INSERT); | |
9a3c8263 | 7093 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7094 | |
7095 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7096 | read. Don't reassign the global entry to point to this DWO if that's |
7097 | the case. Also note that if the TU is already being read, it may not | |
7098 | have come from a DWO, the program may be a mix of Fission-compiled | |
7099 | code and non-Fission-compiled code. */ | |
7100 | ||
7101 | /* Have we already tried to read this TU? | |
7102 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7103 | needn't exist in the global table yet). */ | |
7104 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7105 | return sig_entry; |
7106 | ||
6aa5f3a6 DE |
7107 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7108 | dwo_unit of the TU itself. */ | |
7109 | dwo_file = cu->dwo_unit->dwo_file; | |
7110 | ||
a2ce51a0 DE |
7111 | /* Ok, this is the first time we're reading this TU. */ |
7112 | if (dwo_file->tus == NULL) | |
7113 | return NULL; | |
7114 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7115 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7116 | if (dwo_entry == NULL) |
7117 | return NULL; | |
7118 | ||
6aa5f3a6 DE |
7119 | /* If the global table doesn't have an entry for this TU, add one. */ |
7120 | if (sig_entry == NULL) | |
ed2dc618 | 7121 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7122 | |
ed2dc618 | 7123 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7124 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7125 | return sig_entry; |
7126 | } | |
7127 | ||
a2ce51a0 DE |
7128 | /* Subroutine of lookup_signatured_type. |
7129 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7130 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7131 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7132 | |
7133 | static struct signatured_type * | |
7134 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7135 | { | |
518817b3 SM |
7136 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7137 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7138 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7139 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7140 | struct dwo_unit *dwo_entry; |
7141 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7142 | void **slot; |
a2ce51a0 DE |
7143 | |
7144 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7145 | gdb_assert (dwp_file != NULL); | |
7146 | ||
6aa5f3a6 DE |
7147 | /* If TU skeletons have been removed then we may not have read in any |
7148 | TUs yet. */ | |
7149 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7150 | { |
6aa5f3a6 DE |
7151 | dwarf2_per_objfile->signatured_types |
7152 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7153 | } |
7154 | ||
6aa5f3a6 DE |
7155 | find_sig_entry.signature = sig; |
7156 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7157 | &find_sig_entry, INSERT); | |
9a3c8263 | 7158 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7159 | |
7160 | /* Have we already tried to read this TU? | |
7161 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7162 | needn't exist in the global table yet). */ | |
7163 | if (sig_entry != NULL) | |
7164 | return sig_entry; | |
7165 | ||
a2ce51a0 DE |
7166 | if (dwp_file->tus == NULL) |
7167 | return NULL; | |
ed2dc618 | 7168 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7169 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7170 | if (dwo_entry == NULL) |
7171 | return NULL; | |
7172 | ||
ed2dc618 SM |
7173 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7174 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7175 | |
a2ce51a0 DE |
7176 | return sig_entry; |
7177 | } | |
7178 | ||
380bca97 | 7179 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7180 | Returns NULL if signature SIG is not present in the table. |
7181 | It is up to the caller to complain about this. */ | |
348e048f DE |
7182 | |
7183 | static struct signatured_type * | |
a2ce51a0 | 7184 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7185 | { |
518817b3 SM |
7186 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7187 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7188 | |
a2ce51a0 DE |
7189 | if (cu->dwo_unit |
7190 | && dwarf2_per_objfile->using_index) | |
7191 | { | |
7192 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7193 | These cases require special processing. */ | |
ed2dc618 | 7194 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7195 | return lookup_dwo_signatured_type (cu, sig); |
7196 | else | |
7197 | return lookup_dwp_signatured_type (cu, sig); | |
7198 | } | |
7199 | else | |
7200 | { | |
7201 | struct signatured_type find_entry, *entry; | |
348e048f | 7202 | |
a2ce51a0 DE |
7203 | if (dwarf2_per_objfile->signatured_types == NULL) |
7204 | return NULL; | |
7205 | find_entry.signature = sig; | |
9a3c8263 SM |
7206 | entry = ((struct signatured_type *) |
7207 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7208 | return entry; |
7209 | } | |
348e048f | 7210 | } |
18a8505e AT |
7211 | |
7212 | /* Return the address base of the compile unit, which, if exists, is stored | |
7213 | either at the attribute DW_AT_GNU_addr_base, or DW_AT_addr_base. */ | |
7214 | static gdb::optional<ULONGEST> | |
7215 | lookup_addr_base (struct die_info *comp_unit_die) | |
7216 | { | |
7217 | struct attribute *attr; | |
7218 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_addr_base); | |
7219 | if (attr == nullptr) | |
7220 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_addr_base); | |
7221 | if (attr == nullptr) | |
7222 | return gdb::optional<ULONGEST> (); | |
7223 | return DW_UNSND (attr); | |
7224 | } | |
7225 | ||
7226 | /* Return range lists base of the compile unit, which, if exists, is stored | |
7227 | either at the attribute DW_AT_rnglists_base or DW_AT_GNU_ranges_base. */ | |
7228 | static ULONGEST | |
7229 | lookup_ranges_base (struct die_info *comp_unit_die) | |
7230 | { | |
7231 | struct attribute *attr; | |
7232 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_rnglists_base); | |
7233 | if (attr == nullptr) | |
7234 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_ranges_base); | |
7235 | if (attr == nullptr) | |
7236 | return 0; | |
7237 | return DW_UNSND (attr); | |
7238 | } | |
7239 | ||
42e7ad6c | 7240 | /* Low level DIE reading support. */ |
348e048f | 7241 | |
d85a05f0 DJ |
7242 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7243 | ||
7244 | static void | |
7245 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7246 | struct dwarf2_cu *cu, |
3019eac3 | 7247 | struct dwarf2_section_info *section, |
685af9cd TT |
7248 | struct dwo_file *dwo_file, |
7249 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7250 | { |
fceca515 | 7251 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7252 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7253 | reader->cu = cu; |
3019eac3 | 7254 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7255 | reader->die_section = section; |
7256 | reader->buffer = section->buffer; | |
f664829e | 7257 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7258 | reader->comp_dir = NULL; |
685af9cd | 7259 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7260 | } |
7261 | ||
c0ab21c2 | 7262 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7263 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 7264 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
7265 | already. |
7266 | ||
7267 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7268 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7269 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7270 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7271 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7272 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7273 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7274 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7275 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7276 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7277 | kept around for at least as long as *RESULT_READER. | |
7278 | ||
b0c7bfa9 DE |
7279 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7280 | ||
7281 | static int | |
7282 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7283 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7284 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7285 | const char *stub_comp_dir, |
b0c7bfa9 | 7286 | struct die_reader_specs *result_reader, |
d521ce57 | 7287 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7288 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7289 | int *result_has_children, |
7290 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7291 | { |
ed2dc618 | 7292 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7293 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7294 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7295 | bfd *abfd; |
d521ce57 | 7296 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7297 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7298 | int i,num_extra_attrs; | |
7299 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
7300 | struct die_info *comp_unit_die; |
7301 | ||
b0aeadb3 DE |
7302 | /* At most one of these may be provided. */ |
7303 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7304 | |
b0c7bfa9 DE |
7305 | /* These attributes aren't processed until later: |
7306 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7307 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7308 | referenced later. However, these attributes are found in the stub | |
7309 | which we won't have later. In order to not impose this complication | |
7310 | on the rest of the code, we read them here and copy them to the | |
7311 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7312 | |
7313 | stmt_list = NULL; | |
7314 | low_pc = NULL; | |
7315 | high_pc = NULL; | |
7316 | ranges = NULL; | |
7317 | comp_dir = NULL; | |
7318 | ||
7319 | if (stub_comp_unit_die != NULL) | |
7320 | { | |
7321 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7322 | DWO file. */ | |
7323 | if (! this_cu->is_debug_types) | |
7324 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7325 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7326 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7327 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7328 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7329 | ||
18a8505e | 7330 | cu->addr_base = lookup_addr_base (stub_comp_unit_die); |
b0c7bfa9 | 7331 | |
18a8505e AT |
7332 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
7333 | here (if needed). We need the value before we can process | |
7334 | DW_AT_ranges. */ | |
7335 | cu->ranges_base = lookup_ranges_base (stub_comp_unit_die); | |
b0c7bfa9 | 7336 | } |
a2ce51a0 DE |
7337 | else if (stub_comp_dir != NULL) |
7338 | { | |
7339 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7340 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7341 | comp_dir->name = DW_AT_comp_dir; |
7342 | comp_dir->form = DW_FORM_string; | |
7343 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7344 | DW_STRING (comp_dir) = stub_comp_dir; | |
7345 | } | |
b0c7bfa9 DE |
7346 | |
7347 | /* Set up for reading the DWO CU/TU. */ | |
7348 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7349 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7350 | dwarf2_read_section (objfile, section); |
a32a8923 | 7351 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7352 | begin_info_ptr = info_ptr = (section->buffer |
7353 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7354 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7355 | |
7356 | if (this_cu->is_debug_types) | |
7357 | { | |
b0c7bfa9 DE |
7358 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7359 | ||
ed2dc618 SM |
7360 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7361 | &cu->header, section, | |
b0c7bfa9 | 7362 | dwo_abbrev_section, |
43988095 | 7363 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7364 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7365 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7366 | { |
7367 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7368 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7369 | hex_string (sig_type->signature), |
43988095 | 7370 | hex_string (cu->header.signature), |
9d8780f0 | 7371 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7372 | bfd_get_filename (abfd)); |
7373 | } | |
9c541725 | 7374 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7375 | /* For DWOs coming from DWP files, we don't know the CU length |
7376 | nor the type's offset in the TU until now. */ | |
7377 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7378 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7379 | |
7380 | /* Establish the type offset that can be used to lookup the type. | |
7381 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7382 | sig_type->type_offset_in_section |
7383 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7384 | } |
7385 | else | |
7386 | { | |
ed2dc618 SM |
7387 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7388 | &cu->header, section, | |
b0c7bfa9 | 7389 | dwo_abbrev_section, |
43988095 | 7390 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7391 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7392 | /* For DWOs coming from DWP files, we don't know the CU length |
7393 | until now. */ | |
7394 | dwo_unit->length = get_cu_length (&cu->header); | |
7395 | } | |
7396 | ||
685af9cd TT |
7397 | *result_dwo_abbrev_table |
7398 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7399 | cu->header.abbrev_sect_off); | |
7400 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7401 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7402 | |
7403 | /* Read in the die, but leave space to copy over the attributes | |
7404 | from the stub. This has the benefit of simplifying the rest of | |
7405 | the code - all the work to maintain the illusion of a single | |
7406 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7407 | num_extra_attrs = ((stmt_list != NULL) | |
7408 | + (low_pc != NULL) | |
7409 | + (high_pc != NULL) | |
7410 | + (ranges != NULL) | |
7411 | + (comp_dir != NULL)); | |
7412 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7413 | result_has_children, num_extra_attrs); | |
7414 | ||
7415 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7416 | comp_unit_die = *result_comp_unit_die; | |
7417 | i = comp_unit_die->num_attrs; | |
7418 | if (stmt_list != NULL) | |
7419 | comp_unit_die->attrs[i++] = *stmt_list; | |
7420 | if (low_pc != NULL) | |
7421 | comp_unit_die->attrs[i++] = *low_pc; | |
7422 | if (high_pc != NULL) | |
7423 | comp_unit_die->attrs[i++] = *high_pc; | |
7424 | if (ranges != NULL) | |
7425 | comp_unit_die->attrs[i++] = *ranges; | |
7426 | if (comp_dir != NULL) | |
7427 | comp_unit_die->attrs[i++] = *comp_dir; | |
7428 | comp_unit_die->num_attrs += num_extra_attrs; | |
7429 | ||
b4f54984 | 7430 | if (dwarf_die_debug) |
bf6af496 DE |
7431 | { |
7432 | fprintf_unfiltered (gdb_stdlog, | |
7433 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7434 | get_section_name (section), |
bf6af496 DE |
7435 | (unsigned) (begin_info_ptr - section->buffer), |
7436 | bfd_get_filename (abfd)); | |
b4f54984 | 7437 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7438 | } |
7439 | ||
a2ce51a0 DE |
7440 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7441 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7442 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7443 | to get it via circuitous means. Blech. */ | |
7444 | if (comp_dir != NULL) | |
7445 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7446 | ||
b0c7bfa9 DE |
7447 | /* Skip dummy compilation units. */ |
7448 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7449 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7450 | return 0; | |
7451 | ||
7452 | *result_info_ptr = info_ptr; | |
7453 | return 1; | |
7454 | } | |
7455 | ||
a084a2a6 AT |
7456 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7457 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7458 | signature is part of the header. */ | |
7459 | static gdb::optional<ULONGEST> | |
7460 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7461 | { | |
7462 | if (cu->header.version >= 5) | |
7463 | return cu->header.signature; | |
7464 | struct attribute *attr; | |
7465 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7466 | if (attr == nullptr) | |
7467 | return gdb::optional<ULONGEST> (); | |
7468 | return DW_UNSND (attr); | |
7469 | } | |
7470 | ||
c0ab21c2 | 7471 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7472 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7473 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7474 | |
7475 | static struct dwo_unit * | |
7476 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
7477 | struct die_info *comp_unit_die, |
7478 | const char *dwo_name) | |
b0c7bfa9 DE |
7479 | { |
7480 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7481 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7482 | const char *comp_dir; |
b0c7bfa9 | 7483 | |
a2ce51a0 DE |
7484 | gdb_assert (cu != NULL); |
7485 | ||
b0c7bfa9 | 7486 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7487 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7488 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
7489 | |
7490 | if (this_cu->is_debug_types) | |
7491 | { | |
7492 | struct signatured_type *sig_type; | |
7493 | ||
7494 | /* Since this_cu is the first member of struct signatured_type, | |
7495 | we can go from a pointer to one to a pointer to the other. */ | |
7496 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
7497 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
7498 | } | |
7499 | else | |
7500 | { | |
a084a2a6 AT |
7501 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
7502 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
7503 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7504 | " [in module %s]"), | |
e3b94546 | 7505 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 7506 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 7507 | *signature); |
b0c7bfa9 DE |
7508 | } |
7509 | ||
b0c7bfa9 DE |
7510 | return dwo_unit; |
7511 | } | |
7512 | ||
c0ab21c2 | 7513 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7514 | See it for a description of the parameters. |
fcd3b13d | 7515 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7516 | |
c0ab21c2 TT |
7517 | void |
7518 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
7519 | int use_existing_cu, int keep) | |
a2ce51a0 | 7520 | { |
a2ce51a0 | 7521 | struct signatured_type *sig_type; |
a2ce51a0 | 7522 | struct die_reader_specs reader; |
a2ce51a0 DE |
7523 | |
7524 | /* Verify we can do the following downcast, and that we have the | |
7525 | data we need. */ | |
7526 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7527 | sig_type = (struct signatured_type *) this_cu; | |
7528 | gdb_assert (sig_type->dwo_unit != NULL); | |
7529 | ||
6aa5f3a6 DE |
7530 | if (use_existing_cu && this_cu->cu != NULL) |
7531 | { | |
7532 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7533 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7534 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7535 | } |
7536 | else | |
7537 | { | |
7538 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7539 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 7540 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7541 | } |
7542 | ||
7543 | /* A future optimization, if needed, would be to use an existing | |
7544 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7545 | could share abbrev tables. */ | |
a2ce51a0 DE |
7546 | |
7547 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
7548 | NULL /* stub_comp_unit_die */, |
7549 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7550 | &reader, &info_ptr, | |
685af9cd | 7551 | &comp_unit_die, &has_children, |
c0ab21c2 | 7552 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7553 | { |
7554 | /* Dummy die. */ | |
c0ab21c2 | 7555 | dummy_p = true; |
a2ce51a0 | 7556 | } |
a2ce51a0 DE |
7557 | } |
7558 | ||
fd820528 | 7559 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7560 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7561 | |
f4dc4d17 DE |
7562 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7563 | Otherwise the table specified in the comp unit header is read in and used. | |
7564 | This is an optimization for when we already have the abbrev table. | |
7565 | ||
dee91e82 DE |
7566 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7567 | Otherwise, a new CU is allocated with xmalloc. | |
7568 | ||
7569 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
c0ab21c2 TT |
7570 | read_in_chain. Otherwise the dwarf2_cu data is freed at the |
7571 | end. */ | |
aaa75496 | 7572 | |
c0ab21c2 TT |
7573 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7574 | struct abbrev_table *abbrev_table, | |
7575 | int use_existing_cu, int keep, | |
7576 | bool skip_partial) | |
7577 | : die_reader_specs {}, | |
7578 | m_this_cu (this_cu), | |
7579 | m_keep (keep) | |
c906108c | 7580 | { |
ed2dc618 | 7581 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7582 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7583 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7584 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7585 | struct dwarf2_cu *cu; |
c0ab21c2 | 7586 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7587 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7588 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7589 | /* Non-zero if CU currently points to a DWO file and we need to |
7590 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7591 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7592 | int rereading_dwo_cu = 0; |
c906108c | 7593 | |
b4f54984 | 7594 | if (dwarf_die_debug) |
9d8780f0 | 7595 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7596 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7597 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7598 | |
dee91e82 DE |
7599 | if (use_existing_cu) |
7600 | gdb_assert (keep); | |
23745b47 | 7601 | |
a2ce51a0 DE |
7602 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7603 | file (instead of going through the stub), short-circuit all of this. */ | |
7604 | if (this_cu->reading_dwo_directly) | |
7605 | { | |
7606 | /* Narrow down the scope of possibilities to have to understand. */ | |
7607 | gdb_assert (this_cu->is_debug_types); | |
7608 | gdb_assert (abbrev_table == NULL); | |
c0ab21c2 | 7609 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep); |
a2ce51a0 DE |
7610 | return; |
7611 | } | |
7612 | ||
dee91e82 DE |
7613 | /* This is cheap if the section is already read in. */ |
7614 | dwarf2_read_section (objfile, section); | |
7615 | ||
9c541725 | 7616 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7617 | |
7618 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
7619 | |
7620 | if (use_existing_cu && this_cu->cu != NULL) | |
7621 | { | |
7622 | cu = this_cu->cu; | |
42e7ad6c DE |
7623 | /* If this CU is from a DWO file we need to start over, we need to |
7624 | refetch the attributes from the skeleton CU. | |
7625 | This could be optimized by retrieving those attributes from when we | |
7626 | were here the first time: the previous comp_unit_die was stored in | |
7627 | comp_unit_obstack. But there's no data yet that we need this | |
7628 | optimization. */ | |
7629 | if (cu->dwo_unit != NULL) | |
7630 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7631 | } |
7632 | else | |
7633 | { | |
7634 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7635 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
7636 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
7637 | cu = m_new_cu.get (); | |
42e7ad6c | 7638 | } |
dee91e82 | 7639 | |
b0c7bfa9 | 7640 | /* Get the header. */ |
9c541725 | 7641 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7642 | { |
7643 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7644 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7645 | } |
7646 | else | |
7647 | { | |
3019eac3 | 7648 | if (this_cu->is_debug_types) |
dee91e82 | 7649 | { |
ed2dc618 SM |
7650 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7651 | &cu->header, section, | |
4bdcc0c1 | 7652 | abbrev_section, info_ptr, |
43988095 | 7653 | rcuh_kind::TYPE); |
dee91e82 | 7654 | |
42e7ad6c DE |
7655 | /* Since per_cu is the first member of struct signatured_type, |
7656 | we can go from a pointer to one to a pointer to the other. */ | |
7657 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7658 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7659 | gdb_assert (sig_type->type_offset_in_tu |
7660 | == cu->header.type_cu_offset_in_tu); | |
7661 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7662 | |
42e7ad6c DE |
7663 | /* LENGTH has not been set yet for type units if we're |
7664 | using .gdb_index. */ | |
1ce1cefd | 7665 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7666 | |
7667 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7668 | sig_type->type_offset_in_section = |
7669 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7670 | |
7671 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7672 | } |
7673 | else | |
7674 | { | |
ed2dc618 SM |
7675 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7676 | &cu->header, section, | |
4bdcc0c1 | 7677 | abbrev_section, |
43988095 JK |
7678 | info_ptr, |
7679 | rcuh_kind::COMPILE); | |
dee91e82 | 7680 | |
9c541725 | 7681 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7682 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7683 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7684 | } |
7685 | } | |
10b3939b | 7686 | |
6caca83c | 7687 | /* Skip dummy compilation units. */ |
dee91e82 | 7688 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7689 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7690 | { |
7691 | dummy_p = true; | |
7692 | return; | |
7693 | } | |
6caca83c | 7694 | |
433df2d4 DE |
7695 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7696 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7697 | done. */ |
f4dc4d17 | 7698 | if (abbrev_table != NULL) |
685af9cd TT |
7699 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7700 | else | |
f4dc4d17 | 7701 | { |
c0ab21c2 | 7702 | m_abbrev_table_holder |
685af9cd TT |
7703 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, |
7704 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7705 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7706 | } |
af703f96 | 7707 | |
dee91e82 | 7708 | /* Read the top level CU/TU die. */ |
c0ab21c2 TT |
7709 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
7710 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr, &has_children); | |
93311388 | 7711 | |
58f0c718 | 7712 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7713 | { |
7714 | dummy_p = true; | |
7715 | return; | |
7716 | } | |
58f0c718 | 7717 | |
b0c7bfa9 | 7718 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7719 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7720 | table from the DWO file and pass the ownership over to us. It will be | |
7721 | referenced from READER, so we must make sure to free it after we're done | |
7722 | with READER. | |
7723 | ||
b0c7bfa9 DE |
7724 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7725 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7726 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7727 | if (dwo_name != nullptr) |
3019eac3 | 7728 | { |
3019eac3 | 7729 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7730 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7731 | |
7732 | if (has_children) | |
6a506a2d | 7733 | { |
b98664d3 | 7734 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7735 | " has children (offset %s) [in module %s]"), |
7736 | sect_offset_str (this_cu->sect_off), | |
7737 | bfd_get_filename (abfd)); | |
6a506a2d | 7738 | } |
c0ab21c2 | 7739 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 7740 | if (dwo_unit != NULL) |
3019eac3 | 7741 | { |
6a506a2d | 7742 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7743 | comp_unit_die, NULL, |
c0ab21c2 | 7744 | this, &info_ptr, |
685af9cd | 7745 | &dwo_comp_unit_die, &has_children, |
c0ab21c2 | 7746 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7747 | { |
7748 | /* Dummy die. */ | |
c0ab21c2 | 7749 | dummy_p = true; |
6a506a2d DE |
7750 | return; |
7751 | } | |
7752 | comp_unit_die = dwo_comp_unit_die; | |
7753 | } | |
7754 | else | |
7755 | { | |
7756 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7757 | the stub. A complaint has already been logged. There's | |
7758 | not much more we can do except pass on the stub DIE to | |
7759 | die_reader_func. We don't want to throw an error on bad | |
7760 | debug info. */ | |
3019eac3 DE |
7761 | } |
7762 | } | |
c0ab21c2 | 7763 | } |
3019eac3 | 7764 | |
c0ab21c2 TT |
7765 | cutu_reader::~cutu_reader () |
7766 | { | |
b0c7bfa9 | 7767 | /* Done, clean up. */ |
c0ab21c2 | 7768 | if (m_new_cu != NULL && m_keep && !dummy_p) |
348e048f | 7769 | { |
c0ab21c2 TT |
7770 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7771 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 7772 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
7773 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
7774 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 7775 | /* The chain owns it now. */ |
c0ab21c2 | 7776 | m_new_cu.release (); |
348e048f | 7777 | } |
dee91e82 DE |
7778 | } |
7779 | ||
18a8505e AT |
7780 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7781 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7782 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7783 | |
7784 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7785 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7786 | |
7787 | We fill in THIS_CU->length. | |
7788 | ||
dee91e82 | 7789 | THIS_CU->cu is always freed when done. |
3019eac3 | 7790 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7791 | to care whether it refers to the "main" CU or the DWO CU. |
7792 | ||
7793 | When parent_cu is passed, it is used to provide a default value for | |
7794 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7795 | |
c0ab21c2 TT |
7796 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7797 | struct dwarf2_cu *parent_cu, | |
7798 | struct dwo_file *dwo_file) | |
7799 | : die_reader_specs {}, | |
7800 | m_this_cu (this_cu) | |
dee91e82 | 7801 | { |
ed2dc618 | 7802 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7803 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7804 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7805 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7806 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7807 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
7808 | int has_children; |
7809 | ||
b4f54984 | 7810 | if (dwarf_die_debug) |
9d8780f0 | 7811 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7812 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7813 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7814 | |
dee91e82 DE |
7815 | gdb_assert (this_cu->cu == NULL); |
7816 | ||
33e80786 DE |
7817 | abbrev_section = (dwo_file != NULL |
7818 | ? &dwo_file->sections.abbrev | |
7819 | : get_abbrev_section_for_cu (this_cu)); | |
7820 | ||
dee91e82 DE |
7821 | /* This is cheap if the section is already read in. */ |
7822 | dwarf2_read_section (objfile, section); | |
7823 | ||
c0ab21c2 | 7824 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7825 | |
9c541725 | 7826 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7827 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7828 | &m_new_cu->header, section, |
4bdcc0c1 | 7829 | abbrev_section, info_ptr, |
43988095 JK |
7830 | (this_cu->is_debug_types |
7831 | ? rcuh_kind::TYPE | |
7832 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7833 | |
18a8505e AT |
7834 | if (parent_cu != nullptr) |
7835 | { | |
c0ab21c2 TT |
7836 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7837 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7838 | } |
c0ab21c2 | 7839 | this_cu->length = get_cu_length (&m_new_cu->header); |
dee91e82 DE |
7840 | |
7841 | /* Skip dummy compilation units. */ | |
7842 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7843 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7844 | { |
7845 | dummy_p = true; | |
7846 | return; | |
7847 | } | |
72bf9492 | 7848 | |
c0ab21c2 | 7849 | m_abbrev_table_holder |
685af9cd | 7850 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, |
c0ab21c2 | 7851 | m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7852 | |
c0ab21c2 TT |
7853 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7854 | m_abbrev_table_holder.get ()); | |
7855 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr, &has_children); | |
dee91e82 DE |
7856 | } |
7857 | ||
0018ea6f DE |
7858 | \f |
7859 | /* Type Unit Groups. | |
dee91e82 | 7860 | |
0018ea6f DE |
7861 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7862 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7863 | so that all types coming from the same compilation (.o file) are grouped | |
7864 | together. A future step could be to put the types in the same symtab as | |
7865 | the CU the types ultimately came from. */ | |
ff013f42 | 7866 | |
f4dc4d17 DE |
7867 | static hashval_t |
7868 | hash_type_unit_group (const void *item) | |
7869 | { | |
9a3c8263 SM |
7870 | const struct type_unit_group *tu_group |
7871 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7872 | |
094b34ac | 7873 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7874 | } |
348e048f DE |
7875 | |
7876 | static int | |
f4dc4d17 | 7877 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7878 | { |
9a3c8263 SM |
7879 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7880 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7881 | |
094b34ac | 7882 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7883 | } |
348e048f | 7884 | |
f4dc4d17 DE |
7885 | /* Allocate a hash table for type unit groups. */ |
7886 | ||
7887 | static htab_t | |
ed2dc618 | 7888 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7889 | { |
7890 | return htab_create_alloc_ex (3, | |
7891 | hash_type_unit_group, | |
7892 | eq_type_unit_group, | |
7893 | NULL, | |
ed2dc618 | 7894 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7895 | hashtab_obstack_allocate, |
7896 | dummy_obstack_deallocate); | |
7897 | } | |
dee91e82 | 7898 | |
f4dc4d17 DE |
7899 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7900 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7901 | of any one psymtab grow too big. */ | |
7902 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7903 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7904 | |
094b34ac | 7905 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7906 | Create the type_unit_group object used to hold one or more TUs. */ |
7907 | ||
7908 | static struct type_unit_group * | |
094b34ac | 7909 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7910 | { |
518817b3 SM |
7911 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7912 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7913 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7914 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7915 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7916 | |
7917 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7918 | struct type_unit_group); | |
094b34ac | 7919 | per_cu = &tu_group->per_cu; |
518817b3 | 7920 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7921 | |
094b34ac DE |
7922 | if (dwarf2_per_objfile->using_index) |
7923 | { | |
7924 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7925 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7926 | } |
7927 | else | |
7928 | { | |
9c541725 | 7929 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7930 | dwarf2_psymtab *pst; |
528e1572 | 7931 | std::string name; |
094b34ac DE |
7932 | |
7933 | /* Give the symtab a useful name for debug purposes. */ | |
7934 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7935 | name = string_printf ("<type_units_%d>", |
7936 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7937 | else |
528e1572 | 7938 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7939 | |
528e1572 | 7940 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7941 | pst->anonymous = true; |
094b34ac | 7942 | } |
f4dc4d17 | 7943 | |
094b34ac | 7944 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7945 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7946 | |
7947 | return tu_group; | |
7948 | } | |
7949 | ||
094b34ac DE |
7950 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7951 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7952 | |
7953 | static struct type_unit_group * | |
ff39bb5e | 7954 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7955 | { |
518817b3 SM |
7956 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7957 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7958 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7959 | struct type_unit_group *tu_group; | |
7960 | void **slot; | |
7961 | unsigned int line_offset; | |
7962 | struct type_unit_group type_unit_group_for_lookup; | |
7963 | ||
7964 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7965 | { | |
7966 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7967 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7968 | } |
7969 | ||
7970 | /* Do we need to create a new group, or can we use an existing one? */ | |
7971 | ||
7972 | if (stmt_list) | |
7973 | { | |
7974 | line_offset = DW_UNSND (stmt_list); | |
7975 | ++tu_stats->nr_symtab_sharers; | |
7976 | } | |
7977 | else | |
7978 | { | |
7979 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7980 | We can do various things here like create one group per TU or | |
7981 | spread them over multiple groups to split up the expansion work. | |
7982 | To avoid worst case scenarios (too many groups or too large groups) | |
7983 | we, umm, group them in bunches. */ | |
7984 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7985 | | (tu_stats->nr_stmt_less_type_units | |
7986 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7987 | ++tu_stats->nr_stmt_less_type_units; | |
7988 | } | |
7989 | ||
094b34ac | 7990 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7991 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7992 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7993 | &type_unit_group_for_lookup, INSERT); | |
7994 | if (*slot != NULL) | |
7995 | { | |
9a3c8263 | 7996 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7997 | gdb_assert (tu_group != NULL); |
7998 | } | |
7999 | else | |
8000 | { | |
9c541725 | 8001 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 8002 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
8003 | *slot = tu_group; |
8004 | ++tu_stats->nr_symtabs; | |
8005 | } | |
8006 | ||
8007 | return tu_group; | |
8008 | } | |
0018ea6f DE |
8009 | \f |
8010 | /* Partial symbol tables. */ | |
8011 | ||
8012 | /* Create a psymtab named NAME and assign it to PER_CU. | |
8013 | ||
8014 | The caller must fill in the following details: | |
8015 | dirname, textlow, texthigh. */ | |
8016 | ||
891813be | 8017 | static dwarf2_psymtab * |
0018ea6f DE |
8018 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
8019 | { | |
e3b94546 | 8020 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 8021 | dwarf2_psymtab *pst; |
0018ea6f | 8022 | |
891813be | 8023 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 8024 | |
6d94535f | 8025 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
8026 | |
8027 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 8028 | pst->per_cu_data = per_cu; |
0018ea6f DE |
8029 | per_cu->v.psymtab = pst; |
8030 | ||
8031 | return pst; | |
8032 | } | |
8033 | ||
c0ab21c2 | 8034 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
8035 | |
8036 | static void | |
8037 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8038 | const gdb_byte *info_ptr, |
0018ea6f DE |
8039 | struct die_info *comp_unit_die, |
8040 | int has_children, | |
c0ab21c2 TT |
8041 | int want_partial_unit, |
8042 | enum language pretend_language) | |
0018ea6f DE |
8043 | { |
8044 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 8045 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 8046 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8047 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8048 | CORE_ADDR baseaddr; |
8049 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 8050 | dwarf2_psymtab *pst; |
3a2b436a | 8051 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8052 | const char *filename; |
0018ea6f | 8053 | |
c0ab21c2 | 8054 | if (comp_unit_die->tag == DW_TAG_partial_unit && !want_partial_unit) |
0018ea6f DE |
8055 | return; |
8056 | ||
8057 | gdb_assert (! per_cu->is_debug_types); | |
8058 | ||
c0ab21c2 | 8059 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 8060 | |
0018ea6f | 8061 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
8062 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8063 | if (filename == NULL) | |
0018ea6f | 8064 | filename = ""; |
0018ea6f DE |
8065 | |
8066 | pst = create_partial_symtab (per_cu, filename); | |
8067 | ||
8068 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8069 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 8070 | |
b3b3bada | 8071 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
8072 | |
8073 | dwarf2_find_base_address (comp_unit_die, cu); | |
8074 | ||
8075 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8076 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8077 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8078 | &best_highpc, cu, pst); | |
8079 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8080 | { |
8081 | CORE_ADDR low | |
8082 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8083 | - baseaddr); | |
8084 | CORE_ADDR high | |
8085 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8086 | - baseaddr - 1); | |
8087 | /* Store the contiguous range if it is not empty; it can be | |
8088 | empty for CUs with no code. */ | |
d320c2b5 TT |
8089 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
8090 | low, high, pst); | |
79748972 | 8091 | } |
0018ea6f DE |
8092 | |
8093 | /* Check if comp unit has_children. | |
8094 | If so, read the rest of the partial symbols from this comp unit. | |
8095 | If not, there's no more debug_info for this comp unit. */ | |
8096 | if (has_children) | |
8097 | { | |
8098 | struct partial_die_info *first_die; | |
8099 | CORE_ADDR lowpc, highpc; | |
8100 | ||
8101 | lowpc = ((CORE_ADDR) -1); | |
8102 | highpc = ((CORE_ADDR) 0); | |
8103 | ||
8104 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8105 | ||
8106 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8107 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8108 | |
8109 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8110 | complaints from `maint check'. */ | |
8111 | if (lowpc == ((CORE_ADDR) -1)) | |
8112 | lowpc = highpc; | |
8113 | ||
8114 | /* If the compilation unit didn't have an explicit address range, | |
8115 | then use the information extracted from its child dies. */ | |
e385593e | 8116 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8117 | { |
8118 | best_lowpc = lowpc; | |
8119 | best_highpc = highpc; | |
8120 | } | |
8121 | } | |
4ae976d1 | 8122 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8123 | best_lowpc + baseaddr) |
8124 | - baseaddr); | |
4ae976d1 | 8125 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8126 | best_highpc + baseaddr) |
8127 | - baseaddr); | |
0018ea6f | 8128 | |
8763cede | 8129 | end_psymtab_common (objfile, pst); |
0018ea6f | 8130 | |
ae640021 | 8131 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
8132 | { |
8133 | int i; | |
ae640021 | 8134 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
8135 | |
8136 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8137 | post-pass. */ | |
8138 | pst->number_of_dependencies = len; | |
a9342b62 TT |
8139 | pst->dependencies |
8140 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
8141 | for (i = 0; i < len; ++i) |
8142 | { | |
8143 | pst->dependencies[i] | |
8144 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
8145 | } | |
0018ea6f | 8146 | |
ae640021 | 8147 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
8148 | } |
8149 | ||
8150 | /* Get the list of files included in the current compilation unit, | |
8151 | and build a psymtab for each of them. */ | |
8152 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8153 | ||
b4f54984 | 8154 | if (dwarf_read_debug) |
b926417a TT |
8155 | fprintf_unfiltered (gdb_stdlog, |
8156 | "Psymtab for %s unit @%s: %s - %s" | |
8157 | ", %d global, %d static syms\n", | |
8158 | per_cu->is_debug_types ? "type" : "comp", | |
8159 | sect_offset_str (per_cu->sect_off), | |
8160 | paddress (gdbarch, pst->text_low (objfile)), | |
8161 | paddress (gdbarch, pst->text_high (objfile)), | |
8162 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
8163 | } |
8164 | ||
8165 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8166 | Process compilation unit THIS_CU for a psymtab. */ | |
8167 | ||
8168 | static void | |
8169 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8170 | int want_partial_unit, |
8171 | enum language pretend_language) | |
0018ea6f DE |
8172 | { |
8173 | /* If this compilation unit was already read in, free the | |
8174 | cached copy in order to read it in again. This is | |
8175 | necessary because we skipped some symbols when we first | |
8176 | read in the compilation unit (see load_partial_dies). | |
8177 | This problem could be avoided, but the benefit is unclear. */ | |
8178 | if (this_cu->cu != NULL) | |
8179 | free_one_cached_comp_unit (this_cu); | |
8180 | ||
c0ab21c2 TT |
8181 | cutu_reader reader (this_cu, NULL, 0, 0, false); |
8182 | ||
8183 | if (reader.dummy_p) | |
f1902523 | 8184 | { |
c0ab21c2 | 8185 | /* Nothing. */ |
f1902523 | 8186 | } |
c0ab21c2 TT |
8187 | else if (this_cu->is_debug_types) |
8188 | build_type_psymtabs_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
8189 | reader.has_children); | |
8190 | else | |
8191 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, | |
8192 | reader.comp_unit_die, | |
8193 | reader.has_children, | |
8194 | want_partial_unit, | |
8195 | pretend_language); | |
0018ea6f DE |
8196 | |
8197 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8198 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8199 | } |
f4dc4d17 DE |
8200 | |
8201 | /* Reader function for build_type_psymtabs. */ | |
8202 | ||
8203 | static void | |
8204 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8205 | const gdb_byte *info_ptr, |
f4dc4d17 | 8206 | struct die_info *type_unit_die, |
c0ab21c2 | 8207 | int has_children) |
f4dc4d17 | 8208 | { |
ed2dc618 | 8209 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8210 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8211 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8212 | struct dwarf2_cu *cu = reader->cu; | |
8213 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8214 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8215 | struct type_unit_group *tu_group; |
8216 | struct attribute *attr; | |
8217 | struct partial_die_info *first_die; | |
8218 | CORE_ADDR lowpc, highpc; | |
891813be | 8219 | dwarf2_psymtab *pst; |
f4dc4d17 | 8220 | |
0186c6a7 DE |
8221 | gdb_assert (per_cu->is_debug_types); |
8222 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8223 | |
8224 | if (! has_children) | |
8225 | return; | |
8226 | ||
8227 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8228 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8229 | |
df07e2c7 | 8230 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 8231 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 8232 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
8233 | |
8234 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 8235 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 8236 | pst->anonymous = true; |
f4dc4d17 DE |
8237 | |
8238 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8239 | ||
8240 | lowpc = (CORE_ADDR) -1; | |
8241 | highpc = (CORE_ADDR) 0; | |
8242 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8243 | ||
8763cede | 8244 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8245 | } |
8246 | ||
73051182 DE |
8247 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8248 | ||
8249 | struct tu_abbrev_offset | |
8250 | { | |
b2bdb8cf SM |
8251 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8252 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8253 | {} | |
8254 | ||
8255 | signatured_type *sig_type; | |
73051182 DE |
8256 | sect_offset abbrev_offset; |
8257 | }; | |
8258 | ||
484cf504 | 8259 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8260 | |
484cf504 TT |
8261 | static bool |
8262 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8263 | const struct tu_abbrev_offset &b) | |
73051182 | 8264 | { |
484cf504 | 8265 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8266 | } |
8267 | ||
8268 | /* Efficiently read all the type units. | |
8269 | This does the bulk of the work for build_type_psymtabs. | |
8270 | ||
8271 | The efficiency is because we sort TUs by the abbrev table they use and | |
8272 | only read each abbrev table once. In one program there are 200K TUs | |
8273 | sharing 8K abbrev tables. | |
8274 | ||
8275 | The main purpose of this function is to support building the | |
8276 | dwarf2_per_objfile->type_unit_groups table. | |
8277 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8278 | can collapse the search space by grouping them by stmt_list. | |
8279 | The savings can be significant, in the same program from above the 200K TUs | |
8280 | share 8K stmt_list tables. | |
8281 | ||
8282 | FUNC is expected to call get_type_unit_group, which will create the | |
8283 | struct type_unit_group if necessary and add it to | |
8284 | dwarf2_per_objfile->type_unit_groups. */ | |
8285 | ||
8286 | static void | |
ed2dc618 | 8287 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8288 | { |
73051182 | 8289 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8290 | abbrev_table_up abbrev_table; |
73051182 | 8291 | sect_offset abbrev_offset; |
73051182 DE |
8292 | |
8293 | /* It's up to the caller to not call us multiple times. */ | |
8294 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8295 | ||
b2bdb8cf | 8296 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8297 | return; |
8298 | ||
8299 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8300 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8301 | read each abbrev table in. | |
8302 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8303 | This is simpler and efficient enough for now. | |
8304 | ||
8305 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8306 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8307 | stmt_list value too so in practice this should work well. | |
8308 | ||
8309 | The basic algorithm here is: | |
8310 | ||
8311 | sort TUs by abbrev table | |
8312 | for each TU with same abbrev table: | |
8313 | read abbrev table if first user | |
8314 | read TU top level DIE | |
8315 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8316 | call FUNC */ | |
8317 | ||
b4f54984 | 8318 | if (dwarf_read_debug) |
73051182 DE |
8319 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8320 | ||
8321 | /* Sort in a separate table to maintain the order of all_type_units | |
8322 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8323 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8324 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8325 | ||
8326 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8327 | sorted_by_abbrev.emplace_back | |
8328 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8329 | sig_type->per_cu.section, | |
8330 | sig_type->per_cu.sect_off)); | |
73051182 | 8331 | |
484cf504 TT |
8332 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8333 | sort_tu_by_abbrev_offset); | |
73051182 | 8334 | |
9c541725 | 8335 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8336 | |
b2bdb8cf | 8337 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8338 | { |
73051182 DE |
8339 | /* Switch to the next abbrev table if necessary. */ |
8340 | if (abbrev_table == NULL | |
b2bdb8cf | 8341 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8342 | { |
b2bdb8cf | 8343 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8344 | abbrev_table = |
ed2dc618 SM |
8345 | abbrev_table_read_table (dwarf2_per_objfile, |
8346 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8347 | abbrev_offset); |
8348 | ++tu_stats->nr_uniq_abbrev_tables; | |
8349 | } | |
8350 | ||
c0ab21c2 TT |
8351 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
8352 | 0, 0, false); | |
8353 | if (!reader.dummy_p) | |
8354 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
8355 | reader.comp_unit_die, | |
8356 | reader.has_children); | |
73051182 | 8357 | } |
6aa5f3a6 | 8358 | } |
73051182 | 8359 | |
6aa5f3a6 DE |
8360 | /* Print collected type unit statistics. */ |
8361 | ||
8362 | static void | |
ed2dc618 | 8363 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8364 | { |
8365 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8366 | ||
8367 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8368 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8369 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8370 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8371 | tu_stats->nr_uniq_abbrev_tables); | |
8372 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8373 | tu_stats->nr_symtabs); | |
8374 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8375 | tu_stats->nr_symtab_sharers); | |
8376 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8377 | tu_stats->nr_stmt_less_type_units); | |
8378 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8379 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8380 | } |
8381 | ||
f4dc4d17 DE |
8382 | /* Traversal function for build_type_psymtabs. */ |
8383 | ||
8384 | static int | |
8385 | build_type_psymtab_dependencies (void **slot, void *info) | |
8386 | { | |
ed2dc618 SM |
8387 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8388 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8389 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8390 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8391 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8392 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8393 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8394 | int i; |
8395 | ||
8396 | gdb_assert (len > 0); | |
0186c6a7 | 8397 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8398 | |
8399 | pst->number_of_dependencies = len; | |
a9342b62 | 8400 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8401 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8402 | { |
df07e2c7 | 8403 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8404 | gdb_assert (iter->per_cu.is_debug_types); |
8405 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8406 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8407 | } |
8408 | ||
df07e2c7 AB |
8409 | delete tu_group->tus; |
8410 | tu_group->tus = nullptr; | |
348e048f DE |
8411 | |
8412 | return 1; | |
8413 | } | |
8414 | ||
8415 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8416 | Build partial symbol tables for the .debug_types comp-units. */ | |
8417 | ||
8418 | static void | |
ed2dc618 | 8419 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8420 | { |
ed2dc618 | 8421 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8422 | return; |
8423 | ||
ed2dc618 | 8424 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8425 | } |
f4dc4d17 | 8426 | |
6aa5f3a6 DE |
8427 | /* Traversal function for process_skeletonless_type_unit. |
8428 | Read a TU in a DWO file and build partial symbols for it. */ | |
8429 | ||
8430 | static int | |
8431 | process_skeletonless_type_unit (void **slot, void *info) | |
8432 | { | |
8433 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8434 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8435 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8436 | struct signatured_type find_entry, *entry; |
8437 | ||
8438 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8439 | ||
8440 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8441 | { | |
8442 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8443 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8444 | } |
8445 | ||
8446 | find_entry.signature = dwo_unit->signature; | |
8447 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8448 | INSERT); | |
8449 | /* If we've already seen this type there's nothing to do. What's happening | |
8450 | is we're doing our own version of comdat-folding here. */ | |
8451 | if (*slot != NULL) | |
8452 | return 1; | |
8453 | ||
8454 | /* This does the job that create_all_type_units would have done for | |
8455 | this TU. */ | |
ed2dc618 SM |
8456 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8457 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8458 | *slot = entry; |
8459 | ||
8460 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
c0ab21c2 TT |
8461 | cutu_reader reader (&entry->per_cu, NULL, 0, 0, false); |
8462 | if (!reader.dummy_p) | |
8463 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
8464 | reader.comp_unit_die, reader.has_children); | |
6aa5f3a6 DE |
8465 | |
8466 | return 1; | |
8467 | } | |
8468 | ||
8469 | /* Traversal function for process_skeletonless_type_units. */ | |
8470 | ||
8471 | static int | |
8472 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8473 | { | |
8474 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8475 | ||
8476 | if (dwo_file->tus != NULL) | |
8477 | { | |
8478 | htab_traverse_noresize (dwo_file->tus, | |
8479 | process_skeletonless_type_unit, info); | |
8480 | } | |
8481 | ||
8482 | return 1; | |
8483 | } | |
8484 | ||
8485 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8486 | This is needed in case a TU was emitted without its skeleton. | |
8487 | Note: This can't be done until we know what all the DWO files are. */ | |
8488 | ||
8489 | static void | |
ed2dc618 | 8490 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8491 | { |
8492 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8493 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8494 | && dwarf2_per_objfile->dwo_files != NULL) |
8495 | { | |
51ac9db5 | 8496 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 8497 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 8498 | dwarf2_per_objfile); |
6aa5f3a6 | 8499 | } |
348e048f DE |
8500 | } |
8501 | ||
ed2dc618 | 8502 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8503 | |
8504 | static void | |
ed2dc618 | 8505 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8506 | { |
b76e467d | 8507 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8508 | { |
891813be | 8509 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8510 | |
36586728 TT |
8511 | if (pst == NULL) |
8512 | continue; | |
8513 | ||
b76e467d | 8514 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8515 | { |
8516 | /* Set the 'user' field only if it is not already set. */ | |
8517 | if (pst->dependencies[j]->user == NULL) | |
8518 | pst->dependencies[j]->user = pst; | |
8519 | } | |
8520 | } | |
8521 | } | |
8522 | ||
93311388 DE |
8523 | /* Build the partial symbol table by doing a quick pass through the |
8524 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8525 | |
93311388 | 8526 | static void |
ed2dc618 | 8527 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8528 | { |
ed2dc618 | 8529 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8530 | |
b4f54984 | 8531 | if (dwarf_read_debug) |
45cfd468 DE |
8532 | { |
8533 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8534 | objfile_name (objfile)); |
45cfd468 DE |
8535 | } |
8536 | ||
98bfdba5 PA |
8537 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8538 | ||
be391dca | 8539 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8540 | |
93311388 DE |
8541 | /* Any cached compilation units will be linked by the per-objfile |
8542 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8543 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8544 | |
ed2dc618 | 8545 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8546 | |
ed2dc618 | 8547 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8548 | |
60606b2c TT |
8549 | /* Create a temporary address map on a temporary obstack. We later |
8550 | copy this to the final obstack. */ | |
8268c778 | 8551 | auto_obstack temp_obstack; |
791afaa2 TT |
8552 | |
8553 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8554 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8555 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8556 | |
b76e467d SM |
8557 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8558 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8559 | |
6aa5f3a6 | 8560 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8561 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8562 | |
8563 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8564 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8565 | { | |
8566 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8567 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8568 | } |
8569 | ||
b4f54984 | 8570 | if (dwarf_read_debug) |
ed2dc618 | 8571 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8572 | |
ed2dc618 | 8573 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8574 | |
d320c2b5 TT |
8575 | objfile->partial_symtabs->psymtabs_addrmap |
8576 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8577 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8578 | /* At this point we want to keep the address map. */ |
8579 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8580 | |
b4f54984 | 8581 | if (dwarf_read_debug) |
45cfd468 | 8582 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8583 | objfile_name (objfile)); |
ae038cb0 DJ |
8584 | } |
8585 | ||
dee91e82 DE |
8586 | /* Load the partial DIEs for a secondary CU into memory. |
8587 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8588 | |
dee91e82 DE |
8589 | static void |
8590 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8591 | { | |
c0ab21c2 TT |
8592 | cutu_reader reader (this_cu, NULL, 1, 1, false); |
8593 | ||
8594 | if (!reader.dummy_p) | |
8595 | { | |
8596 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8597 | language_minimal); | |
8598 | ||
8599 | /* Check if comp unit has_children. | |
8600 | If so, read the rest of the partial symbols from this comp unit. | |
8601 | If not, there's no more debug_info for this comp unit. */ | |
8602 | if (reader.has_children) | |
8603 | load_partial_dies (&reader, reader.info_ptr, 0); | |
8604 | } | |
ae038cb0 DJ |
8605 | } |
8606 | ||
ae038cb0 | 8607 | static void |
ed2dc618 | 8608 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8609 | struct dwarf2_section_info *section, |
f1902523 | 8610 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8611 | unsigned int is_dwz) |
ae038cb0 | 8612 | { |
d521ce57 | 8613 | const gdb_byte *info_ptr; |
ed2dc618 | 8614 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8615 | |
b4f54984 | 8616 | if (dwarf_read_debug) |
bf6af496 | 8617 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8618 | get_section_name (section), |
8619 | get_section_file_name (section)); | |
bf6af496 | 8620 | |
36586728 | 8621 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8622 | |
36586728 | 8623 | info_ptr = section->buffer; |
6e70227d | 8624 | |
36586728 | 8625 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8626 | { |
ae038cb0 | 8627 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8628 | |
9c541725 | 8629 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8630 | |
f1902523 | 8631 | comp_unit_head cu_header; |
ed2dc618 SM |
8632 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8633 | abbrev_section, info_ptr, | |
8634 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8635 | |
8636 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8637 | if (cu_header.unit_type != DW_UT_type) |
8638 | { | |
8639 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8640 | struct dwarf2_per_cu_data); | |
8641 | memset (this_cu, 0, sizeof (*this_cu)); | |
8642 | } | |
8643 | else | |
8644 | { | |
8645 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8646 | struct signatured_type); | |
8647 | memset (sig_type, 0, sizeof (*sig_type)); | |
8648 | sig_type->signature = cu_header.signature; | |
8649 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8650 | this_cu = &sig_type->per_cu; | |
8651 | } | |
8652 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8653 | this_cu->sect_off = sect_off; |
f1902523 | 8654 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8655 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8656 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8657 | this_cu->section = section; |
ae038cb0 | 8658 | |
b76e467d | 8659 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8660 | |
8661 | info_ptr = info_ptr + this_cu->length; | |
8662 | } | |
36586728 TT |
8663 | } |
8664 | ||
8665 | /* Create a list of all compilation units in OBJFILE. | |
8666 | This is only done for -readnow and building partial symtabs. */ | |
8667 | ||
8668 | static void | |
ed2dc618 | 8669 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8670 | { |
b76e467d | 8671 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8672 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8673 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8674 | |
b76e467d | 8675 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8676 | if (dwz != NULL) |
ed2dc618 | 8677 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8678 | 1); |
c906108c SS |
8679 | } |
8680 | ||
5734ee8b | 8681 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8682 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8683 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8684 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8685 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8686 | |
72bf9492 DJ |
8687 | static void |
8688 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8689 | CORE_ADDR *highpc, int set_addrmap, |
8690 | struct dwarf2_cu *cu) | |
c906108c | 8691 | { |
72bf9492 | 8692 | struct partial_die_info *pdi; |
c906108c | 8693 | |
91c24f0a DC |
8694 | /* Now, march along the PDI's, descending into ones which have |
8695 | interesting children but skipping the children of the other ones, | |
8696 | until we reach the end of the compilation unit. */ | |
c906108c | 8697 | |
72bf9492 | 8698 | pdi = first_die; |
91c24f0a | 8699 | |
72bf9492 DJ |
8700 | while (pdi != NULL) |
8701 | { | |
52356b79 | 8702 | pdi->fixup (cu); |
c906108c | 8703 | |
f55ee35c | 8704 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8705 | children, so we need to look at them. Ditto for anonymous |
8706 | enums. */ | |
933c6fe4 | 8707 | |
72bf9492 | 8708 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8709 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8710 | || pdi->tag == DW_TAG_imported_unit |
8711 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8712 | { |
72bf9492 | 8713 | switch (pdi->tag) |
c906108c SS |
8714 | { |
8715 | case DW_TAG_subprogram: | |
b1dc1806 | 8716 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8717 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8718 | break; |
72929c62 | 8719 | case DW_TAG_constant: |
c906108c SS |
8720 | case DW_TAG_variable: |
8721 | case DW_TAG_typedef: | |
91c24f0a | 8722 | case DW_TAG_union_type: |
72bf9492 | 8723 | if (!pdi->is_declaration) |
63d06c5c | 8724 | { |
72bf9492 | 8725 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8726 | } |
8727 | break; | |
c906108c | 8728 | case DW_TAG_class_type: |
680b30c7 | 8729 | case DW_TAG_interface_type: |
c906108c | 8730 | case DW_TAG_structure_type: |
72bf9492 | 8731 | if (!pdi->is_declaration) |
c906108c | 8732 | { |
72bf9492 | 8733 | add_partial_symbol (pdi, cu); |
c906108c | 8734 | } |
b7fee5a3 KS |
8735 | if ((cu->language == language_rust |
8736 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8737 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8738 | set_addrmap, cu); | |
c906108c | 8739 | break; |
91c24f0a | 8740 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8741 | if (!pdi->is_declaration) |
8742 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8743 | break; |
8744 | case DW_TAG_base_type: | |
a02abb62 | 8745 | case DW_TAG_subrange_type: |
c906108c | 8746 | /* File scope base type definitions are added to the partial |
c5aa993b | 8747 | symbol table. */ |
72bf9492 | 8748 | add_partial_symbol (pdi, cu); |
c906108c | 8749 | break; |
d9fa45fe | 8750 | case DW_TAG_namespace: |
cdc07690 | 8751 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8752 | break; |
5d7cb8df | 8753 | case DW_TAG_module: |
59c35742 AB |
8754 | if (!pdi->is_declaration) |
8755 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8756 | break; |
95554aad TT |
8757 | case DW_TAG_imported_unit: |
8758 | { | |
8759 | struct dwarf2_per_cu_data *per_cu; | |
8760 | ||
f4dc4d17 DE |
8761 | /* For now we don't handle imported units in type units. */ |
8762 | if (cu->per_cu->is_debug_types) | |
8763 | { | |
8764 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8765 | " supported in type units [in module %s]"), | |
518817b3 | 8766 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8767 | } |
8768 | ||
e3b94546 SM |
8769 | per_cu = dwarf2_find_containing_comp_unit |
8770 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8771 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8772 | |
8773 | /* Go read the partial unit, if needed. */ | |
8774 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8775 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8776 | |
ae640021 | 8777 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8778 | } |
8779 | break; | |
74921315 KS |
8780 | case DW_TAG_imported_declaration: |
8781 | add_partial_symbol (pdi, cu); | |
8782 | break; | |
c906108c SS |
8783 | default: |
8784 | break; | |
8785 | } | |
8786 | } | |
8787 | ||
72bf9492 DJ |
8788 | /* If the die has a sibling, skip to the sibling. */ |
8789 | ||
8790 | pdi = pdi->die_sibling; | |
8791 | } | |
8792 | } | |
8793 | ||
8794 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8795 | |
72bf9492 | 8796 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8797 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8798 | Enumerators are an exception; they use the scope of their parent |
8799 | enumeration type, i.e. the name of the enumeration type is not | |
8800 | prepended to the enumerator. | |
91c24f0a | 8801 | |
72bf9492 DJ |
8802 | There are two complexities. One is DW_AT_specification; in this |
8803 | case "parent" means the parent of the target of the specification, | |
8804 | instead of the direct parent of the DIE. The other is compilers | |
8805 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8806 | the fully qualified name of structure types from their members' | |
8807 | linkage names. This must be done using the DIE's children rather | |
8808 | than the children of any DW_AT_specification target. We only need | |
8809 | to do this for structures at the top level, i.e. if the target of | |
8810 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8811 | have a parent. */ | |
8812 | ||
8813 | /* Compute the scope prefix associated with PDI's parent, in | |
8814 | compilation unit CU. The result will be allocated on CU's | |
8815 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8816 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8817 | static const char * |
72bf9492 DJ |
8818 | partial_die_parent_scope (struct partial_die_info *pdi, |
8819 | struct dwarf2_cu *cu) | |
8820 | { | |
15d034d0 | 8821 | const char *grandparent_scope; |
72bf9492 | 8822 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8823 | |
72bf9492 DJ |
8824 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8825 | then this means the parent of the specification DIE. */ | |
8826 | ||
8827 | real_pdi = pdi; | |
72bf9492 | 8828 | while (real_pdi->has_specification) |
fb816e8b | 8829 | { |
122cf0f2 AB |
8830 | auto res = find_partial_die (real_pdi->spec_offset, |
8831 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8832 | real_pdi = res.pdi; |
8833 | cu = res.cu; | |
8834 | } | |
72bf9492 DJ |
8835 | |
8836 | parent = real_pdi->die_parent; | |
8837 | if (parent == NULL) | |
8838 | return NULL; | |
8839 | ||
8840 | if (parent->scope_set) | |
8841 | return parent->scope; | |
8842 | ||
52356b79 | 8843 | parent->fixup (cu); |
72bf9492 | 8844 | |
10b3939b | 8845 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8846 | |
acebe513 UW |
8847 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8848 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8849 | Work around this problem here. */ | |
8850 | if (cu->language == language_cplus | |
6e70227d | 8851 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8852 | && strcmp (parent->name, "::") == 0 |
8853 | && grandparent_scope == NULL) | |
8854 | { | |
8855 | parent->scope = NULL; | |
8856 | parent->scope_set = 1; | |
8857 | return NULL; | |
8858 | } | |
8859 | ||
0a4b0913 | 8860 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8861 | if (pdi->tag == DW_TAG_enumerator) |
8862 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8863 | parent->scope = grandparent_scope; | |
8864 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8865 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8866 | || parent->tag == DW_TAG_structure_type |
8867 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8868 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8869 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8870 | || parent->tag == DW_TAG_enumeration_type |
8871 | || (cu->language == language_fortran | |
8872 | && parent->tag == DW_TAG_subprogram | |
8873 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8874 | { |
8875 | if (grandparent_scope == NULL) | |
8876 | parent->scope = parent->name; | |
8877 | else | |
3e43a32a MS |
8878 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8879 | grandparent_scope, | |
f55ee35c | 8880 | parent->name, 0, cu); |
72bf9492 | 8881 | } |
72bf9492 DJ |
8882 | else |
8883 | { | |
8884 | /* FIXME drow/2004-04-01: What should we be doing with | |
8885 | function-local names? For partial symbols, we should probably be | |
8886 | ignoring them. */ | |
fa9c3fa0 TT |
8887 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8888 | dwarf_tag_name (parent->tag), | |
8889 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8890 | parent->scope = grandparent_scope; |
c906108c SS |
8891 | } |
8892 | ||
72bf9492 DJ |
8893 | parent->scope_set = 1; |
8894 | return parent->scope; | |
8895 | } | |
8896 | ||
8897 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8898 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8899 | |
43816ebc | 8900 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8901 | partial_die_full_name (struct partial_die_info *pdi, |
8902 | struct dwarf2_cu *cu) | |
8903 | { | |
15d034d0 | 8904 | const char *parent_scope; |
72bf9492 | 8905 | |
98bfdba5 PA |
8906 | /* If this is a template instantiation, we can not work out the |
8907 | template arguments from partial DIEs. So, unfortunately, we have | |
8908 | to go through the full DIEs. At least any work we do building | |
8909 | types here will be reused if full symbols are loaded later. */ | |
8910 | if (pdi->has_template_arguments) | |
8911 | { | |
52356b79 | 8912 | pdi->fixup (cu); |
98bfdba5 PA |
8913 | |
8914 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8915 | { | |
8916 | struct die_info *die; | |
8917 | struct attribute attr; | |
8918 | struct dwarf2_cu *ref_cu = cu; | |
8919 | ||
b64f50a1 | 8920 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8921 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8922 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8923 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8924 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8925 | ||
43816ebc | 8926 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8927 | } |
8928 | } | |
8929 | ||
72bf9492 DJ |
8930 | parent_scope = partial_die_parent_scope (pdi, cu); |
8931 | if (parent_scope == NULL) | |
8932 | return NULL; | |
8933 | else | |
43816ebc TT |
8934 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8935 | pdi->name, 0, cu)); | |
c906108c SS |
8936 | } |
8937 | ||
8938 | static void | |
72bf9492 | 8939 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8940 | { |
518817b3 SM |
8941 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8942 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8943 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8944 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8945 | CORE_ADDR addr = 0; |
15d034d0 | 8946 | const char *actual_name = NULL; |
e142c38c DJ |
8947 | CORE_ADDR baseaddr; |
8948 | ||
b3b3bada | 8949 | baseaddr = objfile->text_section_offset (); |
c906108c | 8950 | |
43816ebc TT |
8951 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8952 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8953 | if (built_actual_name != NULL) |
43816ebc | 8954 | actual_name = built_actual_name.get (); |
63d06c5c | 8955 | |
72bf9492 DJ |
8956 | if (actual_name == NULL) |
8957 | actual_name = pdi->name; | |
8958 | ||
c906108c SS |
8959 | switch (pdi->tag) |
8960 | { | |
b1dc1806 | 8961 | case DW_TAG_inlined_subroutine: |
c906108c | 8962 | case DW_TAG_subprogram: |
79748972 TT |
8963 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8964 | - baseaddr); | |
0a4b0913 AB |
8965 | if (pdi->is_external |
8966 | || cu->language == language_ada | |
8967 | || (cu->language == language_fortran | |
8968 | && pdi->die_parent != NULL | |
8969 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8970 | { | |
8971 | /* Normally, only "external" DIEs are part of the global scope. | |
8972 | But in Ada and Fortran, we want to be able to access nested | |
8973 | procedures globally. So all Ada and Fortran subprograms are | |
8974 | stored in the global scope. */ | |
31edb802 | 8975 | add_psymbol_to_list (actual_name, |
15d034d0 | 8976 | built_actual_name != NULL, |
f47fb265 | 8977 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8978 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8979 | psymbol_placement::GLOBAL, |
79748972 TT |
8980 | addr, |
8981 | cu->language, objfile); | |
c906108c SS |
8982 | } |
8983 | else | |
8984 | { | |
31edb802 | 8985 | add_psymbol_to_list (actual_name, |
15d034d0 | 8986 | built_actual_name != NULL, |
f47fb265 | 8987 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8988 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8989 | psymbol_placement::STATIC, |
1762568f | 8990 | addr, cu->language, objfile); |
c906108c | 8991 | } |
0c1b455e TT |
8992 | |
8993 | if (pdi->main_subprogram && actual_name != NULL) | |
8994 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8995 | break; |
72929c62 | 8996 | case DW_TAG_constant: |
31edb802 | 8997 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8998 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8999 | -1, (pdi->is_external | |
9000 | ? psymbol_placement::GLOBAL | |
9001 | : psymbol_placement::STATIC), | |
9002 | 0, cu->language, objfile); | |
72929c62 | 9003 | break; |
c906108c | 9004 | case DW_TAG_variable: |
95554aad TT |
9005 | if (pdi->d.locdesc) |
9006 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 9007 | |
95554aad | 9008 | if (pdi->d.locdesc |
caac4577 JG |
9009 | && addr == 0 |
9010 | && !dwarf2_per_objfile->has_section_at_zero) | |
9011 | { | |
9012 | /* A global or static variable may also have been stripped | |
9013 | out by the linker if unused, in which case its address | |
9014 | will be nullified; do not add such variables into partial | |
9015 | symbol table then. */ | |
9016 | } | |
9017 | else if (pdi->is_external) | |
c906108c SS |
9018 | { |
9019 | /* Global Variable. | |
9020 | Don't enter into the minimal symbol tables as there is | |
9021 | a minimal symbol table entry from the ELF symbols already. | |
9022 | Enter into partial symbol table if it has a location | |
9023 | descriptor or a type. | |
9024 | If the location descriptor is missing, new_symbol will create | |
9025 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
9026 | be determined from the minimal symbol table whenever the variable | |
9027 | is referenced. | |
9028 | The address for the partial symbol table entry is not | |
9029 | used by GDB, but it comes in handy for debugging partial symbol | |
9030 | table building. */ | |
9031 | ||
95554aad | 9032 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 9033 | add_psymbol_to_list (actual_name, |
15d034d0 | 9034 | built_actual_name != NULL, |
f47fb265 | 9035 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 9036 | SECT_OFF_TEXT (objfile), |
75aedd27 | 9037 | psymbol_placement::GLOBAL, |
79748972 | 9038 | addr, cu->language, objfile); |
c906108c SS |
9039 | } |
9040 | else | |
9041 | { | |
ff908ebf AW |
9042 | int has_loc = pdi->d.locdesc != NULL; |
9043 | ||
9044 | /* Static Variable. Skip symbols whose value we cannot know (those | |
9045 | without location descriptors or constant values). */ | |
9046 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 9047 | return; |
ff908ebf | 9048 | |
31edb802 | 9049 | add_psymbol_to_list (actual_name, |
15d034d0 | 9050 | built_actual_name != NULL, |
f47fb265 | 9051 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 9052 | SECT_OFF_TEXT (objfile), |
75aedd27 | 9053 | psymbol_placement::STATIC, |
79748972 | 9054 | has_loc ? addr : 0, |
f47fb265 | 9055 | cu->language, objfile); |
c906108c SS |
9056 | } |
9057 | break; | |
9058 | case DW_TAG_typedef: | |
9059 | case DW_TAG_base_type: | |
a02abb62 | 9060 | case DW_TAG_subrange_type: |
31edb802 | 9061 | add_psymbol_to_list (actual_name, |
15d034d0 | 9062 | built_actual_name != NULL, |
79748972 | 9063 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9064 | psymbol_placement::STATIC, |
1762568f | 9065 | 0, cu->language, objfile); |
c906108c | 9066 | break; |
74921315 | 9067 | case DW_TAG_imported_declaration: |
72bf9492 | 9068 | case DW_TAG_namespace: |
31edb802 | 9069 | add_psymbol_to_list (actual_name, |
15d034d0 | 9070 | built_actual_name != NULL, |
79748972 | 9071 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9072 | psymbol_placement::GLOBAL, |
1762568f | 9073 | 0, cu->language, objfile); |
72bf9492 | 9074 | break; |
530e8392 | 9075 | case DW_TAG_module: |
a5fd13a9 BH |
9076 | /* With Fortran 77 there might be a "BLOCK DATA" module |
9077 | available without any name. If so, we skip the module as it | |
9078 | doesn't bring any value. */ | |
9079 | if (actual_name != nullptr) | |
31edb802 | 9080 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
9081 | built_actual_name != NULL, |
9082 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
9083 | psymbol_placement::GLOBAL, | |
9084 | 0, cu->language, objfile); | |
530e8392 | 9085 | break; |
c906108c | 9086 | case DW_TAG_class_type: |
680b30c7 | 9087 | case DW_TAG_interface_type: |
c906108c SS |
9088 | case DW_TAG_structure_type: |
9089 | case DW_TAG_union_type: | |
9090 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9091 | /* Skip external references. The DWARF standard says in the section |
9092 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9093 | structure, union or class type is represented by a structure, | |
9094 | union or class entry that does not have a byte size attribute | |
9095 | and that has a DW_AT_declaration attribute." */ | |
9096 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 9097 | return; |
fa4028e9 | 9098 | |
63d06c5c DC |
9099 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9100 | static vs. global. */ | |
31edb802 | 9101 | add_psymbol_to_list (actual_name, |
15d034d0 | 9102 | built_actual_name != NULL, |
79748972 | 9103 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9104 | cu->language == language_cplus |
75aedd27 TT |
9105 | ? psymbol_placement::GLOBAL |
9106 | : psymbol_placement::STATIC, | |
1762568f | 9107 | 0, cu->language, objfile); |
c906108c | 9108 | |
c906108c SS |
9109 | break; |
9110 | case DW_TAG_enumerator: | |
31edb802 | 9111 | add_psymbol_to_list (actual_name, |
15d034d0 | 9112 | built_actual_name != NULL, |
79748972 | 9113 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9114 | cu->language == language_cplus |
75aedd27 TT |
9115 | ? psymbol_placement::GLOBAL |
9116 | : psymbol_placement::STATIC, | |
1762568f | 9117 | 0, cu->language, objfile); |
c906108c SS |
9118 | break; |
9119 | default: | |
9120 | break; | |
9121 | } | |
9122 | } | |
9123 | ||
5c4e30ca DC |
9124 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9125 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9126 | the name of the enclosing namespace. */ | |
91c24f0a | 9127 | |
72bf9492 DJ |
9128 | static void |
9129 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9130 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9131 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9132 | { |
72bf9492 | 9133 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9134 | |
72bf9492 | 9135 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9136 | |
9137 | /* Now scan partial symbols in that namespace. */ | |
9138 | ||
91c24f0a | 9139 | if (pdi->has_children) |
cdc07690 | 9140 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9141 | } |
9142 | ||
5d7cb8df JK |
9143 | /* Read a partial die corresponding to a Fortran module. */ |
9144 | ||
9145 | static void | |
9146 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9147 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9148 | { |
530e8392 KB |
9149 | /* Add a symbol for the namespace. */ |
9150 | ||
9151 | add_partial_symbol (pdi, cu); | |
9152 | ||
f55ee35c | 9153 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9154 | |
9155 | if (pdi->has_children) | |
cdc07690 | 9156 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9157 | } |
9158 | ||
b1dc1806 XR |
9159 | /* Read a partial die corresponding to a subprogram or an inlined |
9160 | subprogram and create a partial symbol for that subprogram. | |
9161 | When the CU language allows it, this routine also defines a partial | |
9162 | symbol for each nested subprogram that this subprogram contains. | |
9163 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9164 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9165 | |
cdc07690 YQ |
9166 | PDI may also be a lexical block, in which case we simply search |
9167 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9168 | Again, this is only performed when the CU language allows this |
9169 | type of definitions. */ | |
9170 | ||
9171 | static void | |
9172 | add_partial_subprogram (struct partial_die_info *pdi, | |
9173 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9174 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9175 | { |
b1dc1806 | 9176 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9177 | { |
9178 | if (pdi->has_pc_info) | |
9179 | { | |
9180 | if (pdi->lowpc < *lowpc) | |
9181 | *lowpc = pdi->lowpc; | |
9182 | if (pdi->highpc > *highpc) | |
9183 | *highpc = pdi->highpc; | |
cdc07690 | 9184 | if (set_addrmap) |
5734ee8b | 9185 | { |
518817b3 | 9186 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9187 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9188 | CORE_ADDR baseaddr; | |
b926417a TT |
9189 | CORE_ADDR this_highpc; |
9190 | CORE_ADDR this_lowpc; | |
5734ee8b | 9191 | |
b3b3bada | 9192 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
9193 | this_lowpc |
9194 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9195 | pdi->lowpc + baseaddr) | |
9196 | - baseaddr); | |
9197 | this_highpc | |
9198 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9199 | pdi->highpc + baseaddr) | |
9200 | - baseaddr); | |
d320c2b5 | 9201 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 9202 | this_lowpc, this_highpc - 1, |
9291a0cd | 9203 | cu->per_cu->v.psymtab); |
5734ee8b | 9204 | } |
481860b3 GB |
9205 | } |
9206 | ||
9207 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9208 | { | |
bc30ff58 | 9209 | if (!pdi->is_declaration) |
e8d05480 JB |
9210 | /* Ignore subprogram DIEs that do not have a name, they are |
9211 | illegal. Do not emit a complaint at this point, we will | |
9212 | do so when we convert this psymtab into a symtab. */ | |
9213 | if (pdi->name) | |
9214 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9215 | } |
9216 | } | |
6e70227d | 9217 | |
bc30ff58 JB |
9218 | if (! pdi->has_children) |
9219 | return; | |
9220 | ||
0a4b0913 | 9221 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
9222 | { |
9223 | pdi = pdi->die_child; | |
9224 | while (pdi != NULL) | |
9225 | { | |
52356b79 | 9226 | pdi->fixup (cu); |
bc30ff58 | 9227 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9228 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9229 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9230 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9231 | pdi = pdi->die_sibling; |
9232 | } | |
9233 | } | |
9234 | } | |
9235 | ||
91c24f0a DC |
9236 | /* Read a partial die corresponding to an enumeration type. */ |
9237 | ||
72bf9492 DJ |
9238 | static void |
9239 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9240 | struct dwarf2_cu *cu) | |
91c24f0a | 9241 | { |
72bf9492 | 9242 | struct partial_die_info *pdi; |
91c24f0a DC |
9243 | |
9244 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9245 | add_partial_symbol (enum_pdi, cu); |
9246 | ||
9247 | pdi = enum_pdi->die_child; | |
9248 | while (pdi) | |
91c24f0a | 9249 | { |
72bf9492 | 9250 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9251 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9252 | else |
72bf9492 DJ |
9253 | add_partial_symbol (pdi, cu); |
9254 | pdi = pdi->die_sibling; | |
91c24f0a | 9255 | } |
91c24f0a DC |
9256 | } |
9257 | ||
6caca83c CC |
9258 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9259 | ||
9260 | static unsigned int | |
d521ce57 | 9261 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9262 | { |
9263 | unsigned int bytes_read; | |
9264 | ||
9265 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9266 | } | |
9267 | ||
685af9cd TT |
9268 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9269 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9270 | ||
4bb7a0a7 DJ |
9271 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9272 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9273 | the initial number. */ | |
9274 | ||
9275 | static struct abbrev_info * | |
685af9cd TT |
9276 | peek_die_abbrev (const die_reader_specs &reader, |
9277 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9278 | { |
685af9cd | 9279 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9280 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9281 | unsigned int abbrev_number |
9282 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9283 | |
9284 | if (abbrev_number == 0) | |
9285 | return NULL; | |
9286 | ||
685af9cd | 9287 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9288 | if (!abbrev) |
9289 | { | |
422b9917 | 9290 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9291 | " at offset %s [in module %s]"), |
422b9917 | 9292 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9293 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9294 | } |
9295 | ||
9296 | return abbrev; | |
9297 | } | |
9298 | ||
93311388 DE |
9299 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9300 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9301 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9302 | ||
d521ce57 TT |
9303 | static const gdb_byte * |
9304 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9305 | { |
4bb7a0a7 DJ |
9306 | while (1) |
9307 | { | |
685af9cd TT |
9308 | unsigned int bytes_read; |
9309 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9310 | ||
4bb7a0a7 DJ |
9311 | if (abbrev == NULL) |
9312 | return info_ptr + bytes_read; | |
9313 | else | |
dee91e82 | 9314 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9315 | } |
9316 | } | |
9317 | ||
93311388 DE |
9318 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9319 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9320 | abbrev corresponding to that skipped uleb128 should be passed in |
9321 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9322 | children. */ | |
9323 | ||
d521ce57 TT |
9324 | static const gdb_byte * |
9325 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9326 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9327 | { |
9328 | unsigned int bytes_read; | |
9329 | struct attribute attr; | |
dee91e82 DE |
9330 | bfd *abfd = reader->abfd; |
9331 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9332 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9333 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9334 | unsigned int form, i; |
9335 | ||
9336 | for (i = 0; i < abbrev->num_attrs; i++) | |
9337 | { | |
9338 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9339 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9340 | { | |
18a8505e AT |
9341 | bool ignored; |
9342 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
9343 | &ignored); | |
4bb7a0a7 | 9344 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9345 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9346 | else |
b9502d3f | 9347 | { |
9c541725 PA |
9348 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9349 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9350 | |
9351 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9352 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9353 | else if (sibling_ptr > reader->buffer_end) |
9354 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9355 | else |
9356 | return sibling_ptr; | |
9357 | } | |
4bb7a0a7 DJ |
9358 | } |
9359 | ||
9360 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9361 | form = abbrev->attrs[i].form; | |
9362 | skip_attribute: | |
9363 | switch (form) | |
9364 | { | |
4bb7a0a7 | 9365 | case DW_FORM_ref_addr: |
ae411497 TT |
9366 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9367 | and later it is offset sized. */ | |
9368 | if (cu->header.version == 2) | |
9369 | info_ptr += cu->header.addr_size; | |
9370 | else | |
9371 | info_ptr += cu->header.offset_size; | |
9372 | break; | |
36586728 TT |
9373 | case DW_FORM_GNU_ref_alt: |
9374 | info_ptr += cu->header.offset_size; | |
9375 | break; | |
ae411497 | 9376 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9377 | info_ptr += cu->header.addr_size; |
9378 | break; | |
9379 | case DW_FORM_data1: | |
9380 | case DW_FORM_ref1: | |
9381 | case DW_FORM_flag: | |
8fe0f950 | 9382 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9383 | info_ptr += 1; |
9384 | break; | |
2dc7f7b3 | 9385 | case DW_FORM_flag_present: |
43988095 | 9386 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9387 | break; |
4bb7a0a7 DJ |
9388 | case DW_FORM_data2: |
9389 | case DW_FORM_ref2: | |
8fe0f950 | 9390 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9391 | info_ptr += 2; |
9392 | break; | |
8fe0f950 AT |
9393 | case DW_FORM_strx3: |
9394 | info_ptr += 3; | |
9395 | break; | |
4bb7a0a7 DJ |
9396 | case DW_FORM_data4: |
9397 | case DW_FORM_ref4: | |
8fe0f950 | 9398 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9399 | info_ptr += 4; |
9400 | break; | |
9401 | case DW_FORM_data8: | |
9402 | case DW_FORM_ref8: | |
55f1336d | 9403 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9404 | info_ptr += 8; |
9405 | break; | |
0224619f JK |
9406 | case DW_FORM_data16: |
9407 | info_ptr += 16; | |
9408 | break; | |
4bb7a0a7 | 9409 | case DW_FORM_string: |
9b1c24c8 | 9410 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9411 | info_ptr += bytes_read; |
9412 | break; | |
2dc7f7b3 | 9413 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9414 | case DW_FORM_strp: |
36586728 | 9415 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9416 | info_ptr += cu->header.offset_size; |
9417 | break; | |
2dc7f7b3 | 9418 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9419 | case DW_FORM_block: |
9420 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9421 | info_ptr += bytes_read; | |
9422 | break; | |
9423 | case DW_FORM_block1: | |
9424 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9425 | break; | |
9426 | case DW_FORM_block2: | |
9427 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9428 | break; | |
9429 | case DW_FORM_block4: | |
9430 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9431 | break; | |
336d760d | 9432 | case DW_FORM_addrx: |
cf532bd1 | 9433 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9434 | case DW_FORM_sdata: |
9435 | case DW_FORM_udata: | |
9436 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9437 | case DW_FORM_GNU_addr_index: |
9438 | case DW_FORM_GNU_str_index: | |
18a8505e | 9439 | case DW_FORM_rnglistx: |
d521ce57 | 9440 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9441 | break; |
9442 | case DW_FORM_indirect: | |
9443 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9444 | info_ptr += bytes_read; | |
9445 | /* We need to continue parsing from here, so just go back to | |
9446 | the top. */ | |
9447 | goto skip_attribute; | |
9448 | ||
9449 | default: | |
3e43a32a MS |
9450 | error (_("Dwarf Error: Cannot handle %s " |
9451 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9452 | dwarf_form_name (form), |
9453 | bfd_get_filename (abfd)); | |
9454 | } | |
9455 | } | |
9456 | ||
9457 | if (abbrev->has_children) | |
dee91e82 | 9458 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9459 | else |
9460 | return info_ptr; | |
9461 | } | |
9462 | ||
93311388 | 9463 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9464 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9465 | |
d521ce57 | 9466 | static const gdb_byte * |
dee91e82 DE |
9467 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9468 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9469 | const gdb_byte *info_ptr) |
91c24f0a DC |
9470 | { |
9471 | /* Do we know the sibling already? */ | |
72bf9492 | 9472 | |
91c24f0a DC |
9473 | if (orig_pdi->sibling) |
9474 | return orig_pdi->sibling; | |
9475 | ||
9476 | /* Are there any children to deal with? */ | |
9477 | ||
9478 | if (!orig_pdi->has_children) | |
9479 | return info_ptr; | |
9480 | ||
4bb7a0a7 | 9481 | /* Skip the children the long way. */ |
91c24f0a | 9482 | |
dee91e82 | 9483 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9484 | } |
9485 | ||
257e7a09 | 9486 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9487 | not NULL. */ |
c906108c | 9488 | |
891813be TT |
9489 | void |
9490 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9491 | { |
ed2dc618 SM |
9492 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9493 | = get_dwarf2_per_objfile (objfile); | |
9494 | ||
077cbab2 TT |
9495 | gdb_assert (!readin); |
9496 | /* If this psymtab is constructed from a debug-only objfile, the | |
9497 | has_section_at_zero flag will not necessarily be correct. We | |
9498 | can get the correct value for this flag by looking at the data | |
9499 | associated with the (presumably stripped) associated objfile. */ | |
9500 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9501 | { |
077cbab2 TT |
9502 | struct dwarf2_per_objfile *dpo_backlink |
9503 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 9504 | |
077cbab2 TT |
9505 | dwarf2_per_objfile->has_section_at_zero |
9506 | = dpo_backlink->has_section_at_zero; | |
9507 | } | |
98bfdba5 | 9508 | |
077cbab2 | 9509 | dwarf2_per_objfile->reading_partial_symbols = 0; |
c906108c | 9510 | |
8566b89b | 9511 | expand_psymtab (objfile); |
95554aad | 9512 | |
ed2dc618 | 9513 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9514 | } |
9cdd5dbd DE |
9515 | \f |
9516 | /* Reading in full CUs. */ | |
c906108c | 9517 | |
10b3939b DJ |
9518 | /* Add PER_CU to the queue. */ |
9519 | ||
9520 | static void | |
95554aad TT |
9521 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9522 | enum language pretend_language) | |
10b3939b DJ |
9523 | { |
9524 | struct dwarf2_queue_item *item; | |
9525 | ||
9526 | per_cu->queued = 1; | |
8d749320 | 9527 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9528 | item->per_cu = per_cu; |
95554aad | 9529 | item->pretend_language = pretend_language; |
10b3939b DJ |
9530 | item->next = NULL; |
9531 | ||
9532 | if (dwarf2_queue == NULL) | |
9533 | dwarf2_queue = item; | |
9534 | else | |
9535 | dwarf2_queue_tail->next = item; | |
9536 | ||
9537 | dwarf2_queue_tail = item; | |
9538 | } | |
9539 | ||
89e63ee4 DE |
9540 | /* If PER_CU is not yet queued, add it to the queue. |
9541 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9542 | dependency. | |
0907af0c | 9543 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9544 | meaning either PER_CU is already queued or it is already loaded. |
9545 | ||
9546 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9547 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9548 | |
9549 | static int | |
89e63ee4 | 9550 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9551 | struct dwarf2_per_cu_data *per_cu, |
9552 | enum language pretend_language) | |
9553 | { | |
9554 | /* We may arrive here during partial symbol reading, if we need full | |
9555 | DIEs to process an unusual case (e.g. template arguments). Do | |
9556 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9557 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9558 | { |
9559 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9560 | return 1; | |
9561 | return 0; | |
9562 | } | |
9563 | ||
9564 | /* Mark the dependence relation so that we don't flush PER_CU | |
9565 | too early. */ | |
89e63ee4 DE |
9566 | if (dependent_cu != NULL) |
9567 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9568 | |
9569 | /* If it's already on the queue, we have nothing to do. */ | |
9570 | if (per_cu->queued) | |
9571 | return 0; | |
9572 | ||
9573 | /* If the compilation unit is already loaded, just mark it as | |
9574 | used. */ | |
9575 | if (per_cu->cu != NULL) | |
9576 | { | |
9577 | per_cu->cu->last_used = 0; | |
9578 | return 0; | |
9579 | } | |
9580 | ||
9581 | /* Add it to the queue. */ | |
9582 | queue_comp_unit (per_cu, pretend_language); | |
9583 | ||
9584 | return 1; | |
9585 | } | |
9586 | ||
10b3939b DJ |
9587 | /* Process the queue. */ |
9588 | ||
9589 | static void | |
ed2dc618 | 9590 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9591 | { |
9592 | struct dwarf2_queue_item *item, *next_item; | |
9593 | ||
b4f54984 | 9594 | if (dwarf_read_debug) |
45cfd468 DE |
9595 | { |
9596 | fprintf_unfiltered (gdb_stdlog, | |
9597 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9598 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9599 | } |
9600 | ||
03dd20cc DJ |
9601 | /* The queue starts out with one item, but following a DIE reference |
9602 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9603 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9604 | { | |
cc12ce38 DE |
9605 | if ((dwarf2_per_objfile->using_index |
9606 | ? !item->per_cu->v.quick->compunit_symtab | |
9607 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9608 | /* Skip dummy CUs. */ | |
9609 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9610 | { |
9611 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9612 | unsigned int debug_print_threshold; |
247f5c4f | 9613 | char buf[100]; |
f4dc4d17 | 9614 | |
247f5c4f | 9615 | if (per_cu->is_debug_types) |
f4dc4d17 | 9616 | { |
247f5c4f DE |
9617 | struct signatured_type *sig_type = |
9618 | (struct signatured_type *) per_cu; | |
9619 | ||
9d8780f0 | 9620 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9621 | hex_string (sig_type->signature), |
9d8780f0 | 9622 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9623 | /* There can be 100s of TUs. |
9624 | Only print them in verbose mode. */ | |
9625 | debug_print_threshold = 2; | |
f4dc4d17 | 9626 | } |
247f5c4f | 9627 | else |
73be47f5 | 9628 | { |
9d8780f0 SM |
9629 | sprintf (buf, "CU at offset %s", |
9630 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9631 | debug_print_threshold = 1; |
9632 | } | |
247f5c4f | 9633 | |
b4f54984 | 9634 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9635 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9636 | |
9637 | if (per_cu->is_debug_types) | |
9638 | process_full_type_unit (per_cu, item->pretend_language); | |
9639 | else | |
9640 | process_full_comp_unit (per_cu, item->pretend_language); | |
9641 | ||
b4f54984 | 9642 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9643 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9644 | } |
10b3939b DJ |
9645 | |
9646 | item->per_cu->queued = 0; | |
9647 | next_item = item->next; | |
9648 | xfree (item); | |
9649 | } | |
9650 | ||
9651 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9652 | |
b4f54984 | 9653 | if (dwarf_read_debug) |
45cfd468 DE |
9654 | { |
9655 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9656 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9657 | } |
10b3939b DJ |
9658 | } |
9659 | ||
10b3939b DJ |
9660 | /* Read in full symbols for PST, and anything it depends on. */ |
9661 | ||
8566b89b TT |
9662 | void |
9663 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9664 | { |
10b3939b | 9665 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 | 9666 | |
8566b89b | 9667 | if (readin) |
95554aad TT |
9668 | return; |
9669 | ||
0494dbec | 9670 | read_dependencies (objfile); |
aaa75496 | 9671 | |
8566b89b | 9672 | per_cu = per_cu_data; |
10b3939b DJ |
9673 | |
9674 | if (per_cu == NULL) | |
aaa75496 JB |
9675 | { |
9676 | /* It's an include file, no symbols to read for it. | |
9677 | Everything is in the parent symtab. */ | |
8566b89b | 9678 | readin = true; |
aaa75496 JB |
9679 | return; |
9680 | } | |
c906108c | 9681 | |
58f0c718 | 9682 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9683 | } |
9684 | ||
dee91e82 DE |
9685 | /* Trivial hash function for die_info: the hash value of a DIE |
9686 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9687 | |
dee91e82 DE |
9688 | static hashval_t |
9689 | die_hash (const void *item) | |
10b3939b | 9690 | { |
9a3c8263 | 9691 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9692 | |
9c541725 | 9693 | return to_underlying (die->sect_off); |
dee91e82 | 9694 | } |
63d06c5c | 9695 | |
dee91e82 DE |
9696 | /* Trivial comparison function for die_info structures: two DIEs |
9697 | are equal if they have the same offset. */ | |
98bfdba5 | 9698 | |
dee91e82 DE |
9699 | static int |
9700 | die_eq (const void *item_lhs, const void *item_rhs) | |
9701 | { | |
9a3c8263 SM |
9702 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9703 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9704 | |
9c541725 | 9705 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9706 | } |
c906108c | 9707 | |
c0ab21c2 | 9708 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9709 | |
dee91e82 | 9710 | static void |
c0ab21c2 TT |
9711 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
9712 | bool skip_partial, | |
9713 | enum language pretend_language) | |
dee91e82 | 9714 | { |
c0ab21c2 TT |
9715 | gdb_assert (! this_cu->is_debug_types); |
9716 | ||
9717 | cutu_reader reader (this_cu, NULL, 1, 1, skip_partial); | |
9718 | if (reader.dummy_p) | |
9719 | return; | |
9720 | ||
9721 | struct dwarf2_cu *cu = reader.cu; | |
9722 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9723 | |
dee91e82 DE |
9724 | gdb_assert (cu->die_hash == NULL); |
9725 | cu->die_hash = | |
9726 | htab_create_alloc_ex (cu->header.length / 12, | |
9727 | die_hash, | |
9728 | die_eq, | |
9729 | NULL, | |
9730 | &cu->comp_unit_obstack, | |
9731 | hashtab_obstack_allocate, | |
9732 | dummy_obstack_deallocate); | |
e142c38c | 9733 | |
c0ab21c2 TT |
9734 | if (reader.has_children) |
9735 | reader.comp_unit_die->child | |
9736 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9737 | &info_ptr, reader.comp_unit_die); | |
9738 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9739 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9740 | |
9741 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9742 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9743 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9744 | or we won't be able to build types correctly. |
9745 | Similarly, if we do not read the producer, we can not apply | |
9746 | producer-specific interpretation. */ | |
c0ab21c2 | 9747 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
10b3939b DJ |
9748 | } |
9749 | ||
3da10d80 KS |
9750 | /* Add a DIE to the delayed physname list. */ |
9751 | ||
9752 | static void | |
9753 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9754 | const char *name, struct die_info *die, | |
9755 | struct dwarf2_cu *cu) | |
9756 | { | |
9757 | struct delayed_method_info mi; | |
9758 | mi.type = type; | |
9759 | mi.fnfield_index = fnfield_index; | |
9760 | mi.index = index; | |
9761 | mi.name = name; | |
9762 | mi.die = die; | |
c89b44cd | 9763 | cu->method_list.push_back (mi); |
3da10d80 KS |
9764 | } |
9765 | ||
3693fdb3 PA |
9766 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9767 | "const" / "volatile". If so, decrements LEN by the length of the | |
9768 | modifier and return true. Otherwise return false. */ | |
9769 | ||
9770 | template<size_t N> | |
9771 | static bool | |
9772 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9773 | { | |
9774 | size_t mod_len = sizeof (mod) - 1; | |
9775 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9776 | { | |
9777 | len -= mod_len; | |
9778 | return true; | |
9779 | } | |
9780 | return false; | |
9781 | } | |
9782 | ||
3da10d80 KS |
9783 | /* Compute the physnames of any methods on the CU's method list. |
9784 | ||
9785 | The computation of method physnames is delayed in order to avoid the | |
9786 | (bad) condition that one of the method's formal parameters is of an as yet | |
9787 | incomplete type. */ | |
9788 | ||
9789 | static void | |
9790 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9791 | { | |
3693fdb3 | 9792 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9793 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9794 | return; |
9795 | gdb_assert (cu->language == language_cplus); | |
9796 | ||
52941706 | 9797 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9798 | { |
1d06ead6 | 9799 | const char *physname; |
3da10d80 | 9800 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9801 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9802 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9803 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9804 | = physname ? physname : ""; |
3693fdb3 PA |
9805 | |
9806 | /* Since there's no tag to indicate whether a method is a | |
9807 | const/volatile overload, extract that information out of the | |
9808 | demangled name. */ | |
9809 | if (physname != NULL) | |
9810 | { | |
9811 | size_t len = strlen (physname); | |
9812 | ||
9813 | while (1) | |
9814 | { | |
9815 | if (physname[len] == ')') /* shortcut */ | |
9816 | break; | |
9817 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9818 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9819 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9820 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9821 | else |
9822 | break; | |
9823 | } | |
9824 | } | |
3da10d80 | 9825 | } |
c89b44cd TT |
9826 | |
9827 | /* The list is no longer needed. */ | |
9828 | cu->method_list.clear (); | |
3da10d80 KS |
9829 | } |
9830 | ||
a766d390 DE |
9831 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9832 | and it's not clear if/how imported objects will appear. | |
9833 | To keep Go support simple until that's worked out, | |
9834 | go back through what we've read and create something usable. | |
9835 | We could do this while processing each DIE, and feels kinda cleaner, | |
9836 | but that way is more invasive. | |
9837 | This is to, for example, allow the user to type "p var" or "b main" | |
9838 | without having to specify the package name, and allow lookups | |
9839 | of module.object to work in contexts that use the expression | |
9840 | parser. */ | |
9841 | ||
9842 | static void | |
9843 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9844 | { | |
421d1616 | 9845 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9846 | struct pending *list; |
9847 | int i; | |
9848 | ||
c24bdb02 | 9849 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9850 | list != NULL; |
9851 | list = list->next) | |
a766d390 DE |
9852 | { |
9853 | for (i = 0; i < list->nsyms; ++i) | |
9854 | { | |
9855 | struct symbol *sym = list->symbol[i]; | |
9856 | ||
c1b5c1eb | 9857 | if (sym->language () == language_go |
a766d390 DE |
9858 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9859 | { | |
421d1616 TT |
9860 | gdb::unique_xmalloc_ptr<char> this_package_name |
9861 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9862 | |
9863 | if (this_package_name == NULL) | |
9864 | continue; | |
9865 | if (package_name == NULL) | |
421d1616 | 9866 | package_name = std::move (this_package_name); |
a766d390 DE |
9867 | else |
9868 | { | |
518817b3 SM |
9869 | struct objfile *objfile |
9870 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9871 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9872 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9873 | (symbol_symtab (sym) != NULL |
9874 | ? symtab_to_filename_for_display | |
9875 | (symbol_symtab (sym)) | |
e3b94546 | 9876 | : objfile_name (objfile)), |
421d1616 | 9877 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9878 | } |
9879 | } | |
9880 | } | |
9881 | } | |
9882 | ||
9883 | if (package_name != NULL) | |
9884 | { | |
518817b3 | 9885 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9886 | const char *saved_package_name |
421d1616 | 9887 | = obstack_strdup (&objfile->per_bfd->storage_obstack, package_name.get ()); |
19f392bc UW |
9888 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9889 | saved_package_name); | |
a766d390 DE |
9890 | struct symbol *sym; |
9891 | ||
e623cf5d | 9892 | sym = allocate_symbol (objfile); |
d3ecddab | 9893 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9894 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9895 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9896 | e.g., "main" finds the "main" module and not C's main(). */ | |
9897 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9898 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9899 | SYMBOL_TYPE (sym) = type; |
9900 | ||
c24bdb02 | 9901 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9902 | } |
9903 | } | |
9904 | ||
c9317f21 TT |
9905 | /* Allocate a fully-qualified name consisting of the two parts on the |
9906 | obstack. */ | |
9907 | ||
9908 | static const char * | |
9909 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9910 | { | |
9911 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9912 | } | |
9913 | ||
9914 | /* A helper that allocates a struct discriminant_info to attach to a | |
9915 | union type. */ | |
9916 | ||
9917 | static struct discriminant_info * | |
9918 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9919 | int default_index) | |
9920 | { | |
9921 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9922 | gdb_assert (discriminant_index == -1 |
9923 | || (discriminant_index >= 0 | |
9924 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9925 | gdb_assert (default_index == -1 |
c7b15a66 | 9926 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9927 | |
9928 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9929 | ||
9930 | struct discriminant_info *disc | |
9931 | = ((struct discriminant_info *) | |
9932 | TYPE_ZALLOC (type, | |
9933 | offsetof (struct discriminant_info, discriminants) | |
9934 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9935 | disc->default_index = default_index; | |
9936 | disc->discriminant_index = discriminant_index; | |
9937 | ||
9938 | struct dynamic_prop prop; | |
9939 | prop.kind = PROP_UNDEFINED; | |
9940 | prop.data.baton = disc; | |
9941 | ||
9942 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9943 | ||
9944 | return disc; | |
9945 | } | |
9946 | ||
9947 | /* Some versions of rustc emitted enums in an unusual way. | |
9948 | ||
9949 | Ordinary enums were emitted as unions. The first element of each | |
9950 | structure in the union was named "RUST$ENUM$DISR". This element | |
9951 | held the discriminant. | |
9952 | ||
9953 | These versions of Rust also implemented the "non-zero" | |
9954 | optimization. When the enum had two values, and one is empty and | |
9955 | the other holds a pointer that cannot be zero, the pointer is used | |
9956 | as the discriminant, with a zero value meaning the empty variant. | |
9957 | Here, the union's first member is of the form | |
9958 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9959 | where the fieldnos are the indices of the fields that should be | |
9960 | traversed in order to find the field (which may be several fields deep) | |
9961 | and the variantname is the name of the variant of the case when the | |
9962 | field is zero. | |
9963 | ||
9964 | This function recognizes whether TYPE is of one of these forms, | |
9965 | and, if so, smashes it to be a variant type. */ | |
9966 | ||
9967 | static void | |
9968 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9969 | { | |
9970 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9971 | ||
9972 | /* We don't need to deal with empty enums. */ | |
9973 | if (TYPE_NFIELDS (type) == 0) | |
9974 | return; | |
9975 | ||
9976 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9977 | if (TYPE_NFIELDS (type) == 1 | |
9978 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9979 | { | |
9980 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9981 | ||
9982 | /* Decode the field name to find the offset of the | |
9983 | discriminant. */ | |
9984 | ULONGEST bit_offset = 0; | |
9985 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9986 | while (name[0] >= '0' && name[0] <= '9') | |
9987 | { | |
9988 | char *tail; | |
9989 | unsigned long index = strtoul (name, &tail, 10); | |
9990 | name = tail; | |
9991 | if (*name != '$' | |
9992 | || index >= TYPE_NFIELDS (field_type) | |
9993 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9994 | != FIELD_LOC_KIND_BITPOS)) | |
9995 | { | |
b98664d3 | 9996 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9997 | "[in module %s]"), |
9998 | TYPE_FIELD_NAME (type, 0), | |
9999 | objfile_name (objfile)); | |
10000 | return; | |
10001 | } | |
10002 | ++name; | |
10003 | ||
10004 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
10005 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
10006 | } | |
10007 | ||
10008 | /* Make a union to hold the variants. */ | |
10009 | struct type *union_type = alloc_type (objfile); | |
10010 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10011 | TYPE_NFIELDS (union_type) = 3; | |
10012 | TYPE_FIELDS (union_type) | |
10013 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
10014 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10015 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10016 | |
10017 | /* Put the discriminant must at index 0. */ | |
10018 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10019 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10020 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10021 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10022 | ||
10023 | /* The order of fields doesn't really matter, so put the real | |
10024 | field at index 1 and the data-less field at index 2. */ | |
10025 | struct discriminant_info *disc | |
10026 | = alloc_discriminant_info (union_type, 0, 1); | |
10027 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10028 | TYPE_FIELD_NAME (union_type, 1) | |
10029 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10030 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10031 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10032 | TYPE_FIELD_NAME (union_type, 1)); | |
10033 | ||
10034 | const char *dataless_name | |
10035 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10036 | name); | |
10037 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10038 | dataless_name); | |
10039 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10040 | /* NAME points into the original discriminant name, which | |
10041 | already has the correct lifetime. */ | |
10042 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10043 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10044 | disc->discriminants[2] = 0; | |
10045 | ||
10046 | /* Smash this type to be a structure type. We have to do this | |
10047 | because the type has already been recorded. */ | |
10048 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10049 | TYPE_NFIELDS (type) = 1; | |
10050 | TYPE_FIELDS (type) | |
10051 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10052 | ||
10053 | /* Install the variant part. */ | |
10054 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10055 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10056 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10057 | } | |
77c2dba3 TT |
10058 | /* A union with a single anonymous field is probably an old-style |
10059 | univariant enum. */ | |
10060 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 10061 | { |
c9317f21 TT |
10062 | /* Smash this type to be a structure type. We have to do this |
10063 | because the type has already been recorded. */ | |
10064 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10065 | ||
10066 | /* Make a union to hold the variants. */ | |
10067 | struct type *union_type = alloc_type (objfile); | |
10068 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10069 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10070 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10071 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10072 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10073 | ||
10074 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10075 | const char *variant_name | |
10076 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10077 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10078 | TYPE_NAME (field_type) | |
10079 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10080 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10081 | |
10082 | /* Install the union in the outer struct type. */ | |
10083 | TYPE_NFIELDS (type) = 1; | |
10084 | TYPE_FIELDS (type) | |
10085 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10086 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10087 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10088 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10089 | ||
10090 | alloc_discriminant_info (union_type, -1, 0); | |
10091 | } | |
10092 | else | |
10093 | { | |
10094 | struct type *disr_type = nullptr; | |
10095 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10096 | { | |
10097 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10098 | ||
a037790e TT |
10099 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10100 | { | |
10101 | /* All fields of a true enum will be structs. */ | |
10102 | return; | |
10103 | } | |
10104 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10105 | { |
10106 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10107 | disr_type = nullptr; |
c9317f21 TT |
10108 | } |
10109 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10110 | "RUST$ENUM$DISR") != 0) | |
10111 | { | |
10112 | /* Not a Rust enum. */ | |
10113 | return; | |
10114 | } | |
10115 | else | |
10116 | { | |
10117 | /* Found one. */ | |
10118 | break; | |
10119 | } | |
10120 | } | |
10121 | ||
10122 | /* If we got here without a discriminant, then it's probably | |
10123 | just a union. */ | |
10124 | if (disr_type == nullptr) | |
10125 | return; | |
10126 | ||
10127 | /* Smash this type to be a structure type. We have to do this | |
10128 | because the type has already been recorded. */ | |
10129 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10130 | ||
10131 | /* Make a union to hold the variants. */ | |
10132 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10133 | struct type *union_type = alloc_type (objfile); | |
10134 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10135 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10136 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10137 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10138 | TYPE_FIELDS (union_type) |
10139 | = (struct field *) TYPE_ZALLOC (union_type, | |
10140 | (TYPE_NFIELDS (union_type) | |
10141 | * sizeof (struct field))); | |
10142 | ||
10143 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10144 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10145 | ||
10146 | /* Install the discriminant at index 0 in the union. */ | |
10147 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10148 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10149 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10150 | ||
10151 | /* Install the union in the outer struct type. */ | |
10152 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10153 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10154 | TYPE_NFIELDS (type) = 1; | |
10155 | ||
10156 | /* Set the size and offset of the union type. */ | |
10157 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10158 | ||
10159 | /* We need a way to find the correct discriminant given a | |
10160 | variant name. For convenience we build a map here. */ | |
10161 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10162 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10163 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10164 | { | |
10165 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10166 | { | |
10167 | const char *name | |
10168 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10169 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10170 | } | |
10171 | } | |
10172 | ||
10173 | int n_fields = TYPE_NFIELDS (union_type); | |
10174 | struct discriminant_info *disc | |
10175 | = alloc_discriminant_info (union_type, 0, -1); | |
10176 | /* Skip the discriminant here. */ | |
10177 | for (int i = 1; i < n_fields; ++i) | |
10178 | { | |
10179 | /* Find the final word in the name of this variant's type. | |
10180 | That name can be used to look up the correct | |
10181 | discriminant. */ | |
10182 | const char *variant_name | |
10183 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10184 | i))); | |
10185 | ||
10186 | auto iter = discriminant_map.find (variant_name); | |
10187 | if (iter != discriminant_map.end ()) | |
10188 | disc->discriminants[i] = iter->second; | |
10189 | ||
bedda9ac | 10190 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10191 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10192 | if (TYPE_NFIELDS (sub_type) > 0) |
10193 | { | |
10194 | --TYPE_NFIELDS (sub_type); | |
10195 | ++TYPE_FIELDS (sub_type); | |
10196 | } | |
c9317f21 TT |
10197 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10198 | TYPE_NAME (sub_type) | |
10199 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10200 | TYPE_NAME (type), variant_name); | |
10201 | } | |
10202 | } | |
10203 | } | |
10204 | ||
10205 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10206 | ||
10207 | static void | |
10208 | rust_union_quirks (struct dwarf2_cu *cu) | |
10209 | { | |
10210 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10211 | for (type *type_ : cu->rust_unions) |
10212 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10213 | /* We don't need this any more. */ |
10214 | cu->rust_unions.clear (); | |
c9317f21 TT |
10215 | } |
10216 | ||
95554aad TT |
10217 | /* Return the symtab for PER_CU. This works properly regardless of |
10218 | whether we're using the index or psymtabs. */ | |
10219 | ||
43f3e411 DE |
10220 | static struct compunit_symtab * |
10221 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10222 | { |
ed2dc618 | 10223 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10224 | ? per_cu->v.quick->compunit_symtab |
10225 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10226 | } |
10227 | ||
10228 | /* A helper function for computing the list of all symbol tables | |
10229 | included by PER_CU. */ | |
10230 | ||
10231 | static void | |
4c39bc03 | 10232 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 10233 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10234 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10235 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10236 | { |
10237 | void **slot; | |
43f3e411 | 10238 | struct compunit_symtab *cust; |
95554aad TT |
10239 | |
10240 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10241 | if (*slot != NULL) | |
10242 | { | |
10243 | /* This inclusion and its children have been processed. */ | |
10244 | return; | |
10245 | } | |
10246 | ||
10247 | *slot = per_cu; | |
10248 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10249 | cust = get_compunit_symtab (per_cu); |
10250 | if (cust != NULL) | |
ec94af83 DE |
10251 | { |
10252 | /* If this is a type unit only add its symbol table if we haven't | |
10253 | seen it yet (type unit per_cu's can share symtabs). */ | |
10254 | if (per_cu->is_debug_types) | |
10255 | { | |
43f3e411 | 10256 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10257 | if (*slot == NULL) |
10258 | { | |
43f3e411 | 10259 | *slot = cust; |
4c39bc03 | 10260 | result->push_back (cust); |
43f3e411 DE |
10261 | if (cust->user == NULL) |
10262 | cust->user = immediate_parent; | |
ec94af83 DE |
10263 | } |
10264 | } | |
10265 | else | |
f9125b6c | 10266 | { |
4c39bc03 | 10267 | result->push_back (cust); |
43f3e411 DE |
10268 | if (cust->user == NULL) |
10269 | cust->user = immediate_parent; | |
f9125b6c | 10270 | } |
ec94af83 | 10271 | } |
95554aad | 10272 | |
ae640021 AB |
10273 | if (!per_cu->imported_symtabs_empty ()) |
10274 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
10275 | { | |
10276 | recursively_compute_inclusions (result, all_children, | |
10277 | all_type_symtabs, ptr, cust); | |
10278 | } | |
95554aad TT |
10279 | } |
10280 | ||
43f3e411 | 10281 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10282 | PER_CU. */ |
10283 | ||
10284 | static void | |
43f3e411 | 10285 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10286 | { |
f4dc4d17 DE |
10287 | gdb_assert (! per_cu->is_debug_types); |
10288 | ||
ae640021 | 10289 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 10290 | { |
ae640021 | 10291 | int len; |
4c39bc03 | 10292 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 10293 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10294 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10295 | |
10296 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10297 | if (cust == NULL) |
95554aad TT |
10298 | return; |
10299 | ||
10300 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10301 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10302 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10303 | NULL, xcalloc, xfree); | |
95554aad | 10304 | |
ae640021 | 10305 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
10306 | { |
10307 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 10308 | all_type_symtabs, ptr, cust); |
ec94af83 | 10309 | } |
95554aad | 10310 | |
ec94af83 | 10311 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10312 | len = result_symtabs.size (); |
43f3e411 | 10313 | cust->includes |
ed2dc618 | 10314 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10315 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10316 | memcpy (cust->includes, result_symtabs.data (), |
10317 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10318 | cust->includes[len] = NULL; |
95554aad | 10319 | |
95554aad | 10320 | htab_delete (all_children); |
ec94af83 | 10321 | htab_delete (all_type_symtabs); |
95554aad TT |
10322 | } |
10323 | } | |
10324 | ||
10325 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10326 | read. */ | |
10327 | ||
10328 | static void | |
ed2dc618 | 10329 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10330 | { |
71b73764 | 10331 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10332 | { |
10333 | if (! iter->is_debug_types) | |
43f3e411 | 10334 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10335 | } |
95554aad | 10336 | |
c5d0225d | 10337 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10338 | } |
10339 | ||
9cdd5dbd | 10340 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10341 | already been loaded into memory. */ |
10342 | ||
10343 | static void | |
95554aad TT |
10344 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10345 | enum language pretend_language) | |
10b3939b | 10346 | { |
10b3939b | 10347 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10348 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10349 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10350 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10351 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10352 | struct compunit_symtab *cust; |
10b3939b | 10353 | CORE_ADDR baseaddr; |
4359dff1 | 10354 | struct block *static_block; |
3e29f34a | 10355 | CORE_ADDR addr; |
10b3939b | 10356 | |
b3b3bada | 10357 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10358 | |
c89b44cd TT |
10359 | /* Clear the list here in case something was left over. */ |
10360 | cu->method_list.clear (); | |
10b3939b | 10361 | |
95554aad TT |
10362 | cu->language = pretend_language; |
10363 | cu->language_defn = language_def (cu->language); | |
10364 | ||
c906108c | 10365 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10366 | process_die (cu->dies, cu); |
c906108c | 10367 | |
a766d390 DE |
10368 | /* For now fudge the Go package. */ |
10369 | if (cu->language == language_go) | |
10370 | fixup_go_packaging (cu); | |
10371 | ||
5f48f8f3 | 10372 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10373 | should be complete, and it should now be safe to compute all of the |
10374 | physnames. */ | |
10375 | compute_delayed_physnames (cu); | |
3da10d80 | 10376 | |
c9317f21 TT |
10377 | if (cu->language == language_rust) |
10378 | rust_union_quirks (cu); | |
10379 | ||
fae299cd DC |
10380 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10381 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10382 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10383 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10384 | |
3e29f34a | 10385 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10386 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10387 | |
10388 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10389 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10390 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10391 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10392 | this comp unit. */ | |
10393 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10394 | ||
c24bdb02 | 10395 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10396 | SECT_OFF_TEXT (objfile), |
10397 | 0); | |
c906108c | 10398 | |
43f3e411 | 10399 | if (cust != NULL) |
c906108c | 10400 | { |
df15bd07 | 10401 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10402 | |
8be455d7 JK |
10403 | /* Set symtab language to language from DW_AT_language. If the |
10404 | compilation is from a C file generated by language preprocessors, do | |
10405 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10406 | if (!(cu->language == language_c |
40e3ad0e | 10407 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10408 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10409 | |
10410 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10411 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10412 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10413 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10414 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10415 | |
10416 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10417 | needed, it would be wrong due to missing DW_AT_producer there. | |
10418 | ||
10419 | Still one can confuse GDB by using non-standard GCC compilation | |
10420 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10421 | */ |
ab260dad | 10422 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10423 | cust->locations_valid = 1; |
e0d00bc7 JK |
10424 | |
10425 | if (gcc_4_minor >= 5) | |
43f3e411 | 10426 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10427 | |
43f3e411 | 10428 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10429 | } |
9291a0cd TT |
10430 | |
10431 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10432 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10433 | else |
10434 | { | |
891813be | 10435 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10436 | pst->compunit_symtab = cust; |
6d94535f | 10437 | pst->readin = true; |
9291a0cd | 10438 | } |
c906108c | 10439 | |
95554aad | 10440 | /* Push it for inclusion processing later. */ |
c5d0225d | 10441 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10442 | |
10443 | /* Not needed any more. */ | |
c24bdb02 | 10444 | cu->reset_builder (); |
f4dc4d17 | 10445 | } |
45cfd468 | 10446 | |
f4dc4d17 DE |
10447 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10448 | already been loaded into memory. */ | |
10449 | ||
10450 | static void | |
10451 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10452 | enum language pretend_language) | |
10453 | { | |
10454 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10455 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10456 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10457 | struct compunit_symtab *cust; |
0186c6a7 DE |
10458 | struct signatured_type *sig_type; |
10459 | ||
10460 | gdb_assert (per_cu->is_debug_types); | |
10461 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10462 | |
c89b44cd TT |
10463 | /* Clear the list here in case something was left over. */ |
10464 | cu->method_list.clear (); | |
f4dc4d17 | 10465 | |
f4dc4d17 DE |
10466 | cu->language = pretend_language; |
10467 | cu->language_defn = language_def (cu->language); | |
10468 | ||
10469 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10470 | process_die (cu->dies, cu); | |
10471 | ||
10472 | /* For now fudge the Go package. */ | |
10473 | if (cu->language == language_go) | |
10474 | fixup_go_packaging (cu); | |
10475 | ||
5f48f8f3 | 10476 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10477 | should be complete, and it should now be safe to compute all of the |
10478 | physnames. */ | |
10479 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10480 | |
c9317f21 TT |
10481 | if (cu->language == language_rust) |
10482 | rust_union_quirks (cu); | |
10483 | ||
f4dc4d17 DE |
10484 | /* TUs share symbol tables. |
10485 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10486 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10487 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10488 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10489 | { |
c24bdb02 KS |
10490 | buildsym_compunit *builder = cu->get_builder (); |
10491 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 10492 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10493 | |
43f3e411 | 10494 | if (cust != NULL) |
f4dc4d17 DE |
10495 | { |
10496 | /* Set symtab language to language from DW_AT_language. If the | |
10497 | compilation is from a C file generated by language preprocessors, | |
10498 | do not set the language if it was already deduced by | |
10499 | start_subfile. */ | |
43f3e411 DE |
10500 | if (!(cu->language == language_c |
10501 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10502 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10503 | } |
10504 | } | |
10505 | else | |
10506 | { | |
c24bdb02 | 10507 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 10508 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10509 | } |
10510 | ||
10511 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10512 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10513 | else |
10514 | { | |
891813be | 10515 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10516 | pst->compunit_symtab = cust; |
6d94535f | 10517 | pst->readin = true; |
45cfd468 | 10518 | } |
804d2729 TT |
10519 | |
10520 | /* Not needed any more. */ | |
c24bdb02 | 10521 | cu->reset_builder (); |
c906108c SS |
10522 | } |
10523 | ||
95554aad TT |
10524 | /* Process an imported unit DIE. */ |
10525 | ||
10526 | static void | |
10527 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10528 | { | |
10529 | struct attribute *attr; | |
10530 | ||
f4dc4d17 DE |
10531 | /* For now we don't handle imported units in type units. */ |
10532 | if (cu->per_cu->is_debug_types) | |
10533 | { | |
10534 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10535 | " supported in type units [in module %s]"), | |
518817b3 | 10536 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10537 | } |
10538 | ||
95554aad TT |
10539 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10540 | if (attr != NULL) | |
10541 | { | |
9c541725 PA |
10542 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10543 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10544 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10545 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10546 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10547 | |
69d751e3 | 10548 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10549 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10550 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10551 | |
ae640021 | 10552 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10553 | } |
10554 | } | |
10555 | ||
4c8aa72d PA |
10556 | /* RAII object that represents a process_die scope: i.e., |
10557 | starts/finishes processing a DIE. */ | |
10558 | class process_die_scope | |
adde2bff | 10559 | { |
4c8aa72d PA |
10560 | public: |
10561 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10562 | : m_die (die), m_cu (cu) | |
10563 | { | |
10564 | /* We should only be processing DIEs not already in process. */ | |
10565 | gdb_assert (!m_die->in_process); | |
10566 | m_die->in_process = true; | |
10567 | } | |
8c3cb9fa | 10568 | |
4c8aa72d PA |
10569 | ~process_die_scope () |
10570 | { | |
10571 | m_die->in_process = false; | |
10572 | ||
10573 | /* If we're done processing the DIE for the CU that owns the line | |
10574 | header, we don't need the line header anymore. */ | |
10575 | if (m_cu->line_header_die_owner == m_die) | |
10576 | { | |
10577 | delete m_cu->line_header; | |
10578 | m_cu->line_header = NULL; | |
10579 | m_cu->line_header_die_owner = NULL; | |
10580 | } | |
10581 | } | |
10582 | ||
10583 | private: | |
10584 | die_info *m_die; | |
10585 | dwarf2_cu *m_cu; | |
10586 | }; | |
adde2bff | 10587 | |
c906108c SS |
10588 | /* Process a die and its children. */ |
10589 | ||
10590 | static void | |
e7c27a73 | 10591 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10592 | { |
4c8aa72d | 10593 | process_die_scope scope (die, cu); |
adde2bff | 10594 | |
c906108c SS |
10595 | switch (die->tag) |
10596 | { | |
10597 | case DW_TAG_padding: | |
10598 | break; | |
10599 | case DW_TAG_compile_unit: | |
95554aad | 10600 | case DW_TAG_partial_unit: |
e7c27a73 | 10601 | read_file_scope (die, cu); |
c906108c | 10602 | break; |
348e048f DE |
10603 | case DW_TAG_type_unit: |
10604 | read_type_unit_scope (die, cu); | |
10605 | break; | |
c906108c | 10606 | case DW_TAG_subprogram: |
0a4b0913 AB |
10607 | /* Nested subprograms in Fortran get a prefix. */ |
10608 | if (cu->language == language_fortran | |
10609 | && die->parent != NULL | |
10610 | && die->parent->tag == DW_TAG_subprogram) | |
10611 | cu->processing_has_namespace_info = true; | |
10612 | /* Fall through. */ | |
c906108c | 10613 | case DW_TAG_inlined_subroutine: |
edb3359d | 10614 | read_func_scope (die, cu); |
c906108c SS |
10615 | break; |
10616 | case DW_TAG_lexical_block: | |
14898363 L |
10617 | case DW_TAG_try_block: |
10618 | case DW_TAG_catch_block: | |
e7c27a73 | 10619 | read_lexical_block_scope (die, cu); |
c906108c | 10620 | break; |
216f72a1 | 10621 | case DW_TAG_call_site: |
96408a79 SA |
10622 | case DW_TAG_GNU_call_site: |
10623 | read_call_site_scope (die, cu); | |
10624 | break; | |
c906108c | 10625 | case DW_TAG_class_type: |
680b30c7 | 10626 | case DW_TAG_interface_type: |
c906108c SS |
10627 | case DW_TAG_structure_type: |
10628 | case DW_TAG_union_type: | |
134d01f1 | 10629 | process_structure_scope (die, cu); |
c906108c SS |
10630 | break; |
10631 | case DW_TAG_enumeration_type: | |
134d01f1 | 10632 | process_enumeration_scope (die, cu); |
c906108c | 10633 | break; |
134d01f1 | 10634 | |
f792889a DJ |
10635 | /* These dies have a type, but processing them does not create |
10636 | a symbol or recurse to process the children. Therefore we can | |
10637 | read them on-demand through read_type_die. */ | |
c906108c | 10638 | case DW_TAG_subroutine_type: |
72019c9c | 10639 | case DW_TAG_set_type: |
c906108c | 10640 | case DW_TAG_array_type: |
c906108c | 10641 | case DW_TAG_pointer_type: |
c906108c | 10642 | case DW_TAG_ptr_to_member_type: |
c906108c | 10643 | case DW_TAG_reference_type: |
4297a3f0 | 10644 | case DW_TAG_rvalue_reference_type: |
c906108c | 10645 | case DW_TAG_string_type: |
c906108c | 10646 | break; |
134d01f1 | 10647 | |
c906108c | 10648 | case DW_TAG_base_type: |
a02abb62 | 10649 | case DW_TAG_subrange_type: |
cb249c71 | 10650 | case DW_TAG_typedef: |
134d01f1 DJ |
10651 | /* Add a typedef symbol for the type definition, if it has a |
10652 | DW_AT_name. */ | |
f792889a | 10653 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10654 | break; |
c906108c | 10655 | case DW_TAG_common_block: |
e7c27a73 | 10656 | read_common_block (die, cu); |
c906108c SS |
10657 | break; |
10658 | case DW_TAG_common_inclusion: | |
10659 | break; | |
d9fa45fe | 10660 | case DW_TAG_namespace: |
9068261f | 10661 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10662 | read_namespace (die, cu); |
d9fa45fe | 10663 | break; |
5d7cb8df | 10664 | case DW_TAG_module: |
9068261f | 10665 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10666 | read_module (die, cu); |
10667 | break; | |
d9fa45fe | 10668 | case DW_TAG_imported_declaration: |
9068261f | 10669 | cu->processing_has_namespace_info = true; |
74921315 KS |
10670 | if (read_namespace_alias (die, cu)) |
10671 | break; | |
86a73007 TT |
10672 | /* The declaration is not a global namespace alias. */ |
10673 | /* Fall through. */ | |
d9fa45fe | 10674 | case DW_TAG_imported_module: |
9068261f | 10675 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10676 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10677 | || cu->language != language_fortran)) | |
b98664d3 | 10678 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10679 | dwarf_tag_name (die->tag)); |
10680 | read_import_statement (die, cu); | |
d9fa45fe | 10681 | break; |
95554aad TT |
10682 | |
10683 | case DW_TAG_imported_unit: | |
10684 | process_imported_unit_die (die, cu); | |
10685 | break; | |
10686 | ||
71a3c369 TT |
10687 | case DW_TAG_variable: |
10688 | read_variable (die, cu); | |
10689 | break; | |
10690 | ||
c906108c | 10691 | default: |
e7c27a73 | 10692 | new_symbol (die, NULL, cu); |
c906108c SS |
10693 | break; |
10694 | } | |
10695 | } | |
ca69b9e6 DE |
10696 | \f |
10697 | /* DWARF name computation. */ | |
c906108c | 10698 | |
94af9270 KS |
10699 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10700 | needs to have the name of the scope prepended to the name listed in the | |
10701 | die. */ | |
10702 | ||
10703 | static int | |
10704 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10705 | { | |
1c809c68 TT |
10706 | struct attribute *attr; |
10707 | ||
94af9270 KS |
10708 | switch (die->tag) |
10709 | { | |
10710 | case DW_TAG_namespace: | |
10711 | case DW_TAG_typedef: | |
10712 | case DW_TAG_class_type: | |
10713 | case DW_TAG_interface_type: | |
10714 | case DW_TAG_structure_type: | |
10715 | case DW_TAG_union_type: | |
10716 | case DW_TAG_enumeration_type: | |
10717 | case DW_TAG_enumerator: | |
10718 | case DW_TAG_subprogram: | |
08a76f8a | 10719 | case DW_TAG_inlined_subroutine: |
94af9270 | 10720 | case DW_TAG_member: |
74921315 | 10721 | case DW_TAG_imported_declaration: |
94af9270 KS |
10722 | return 1; |
10723 | ||
10724 | case DW_TAG_variable: | |
c2b0a229 | 10725 | case DW_TAG_constant: |
94af9270 KS |
10726 | /* We only need to prefix "globally" visible variables. These include |
10727 | any variable marked with DW_AT_external or any variable that | |
10728 | lives in a namespace. [Variables in anonymous namespaces | |
10729 | require prefixing, but they are not DW_AT_external.] */ | |
10730 | ||
10731 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10732 | { | |
10733 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10734 | |
94af9270 KS |
10735 | return die_needs_namespace (die_specification (die, &spec_cu), |
10736 | spec_cu); | |
10737 | } | |
10738 | ||
1c809c68 | 10739 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10740 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10741 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10742 | return 0; |
10743 | /* A variable in a lexical block of some kind does not need a | |
10744 | namespace, even though in C++ such variables may be external | |
10745 | and have a mangled name. */ | |
10746 | if (die->parent->tag == DW_TAG_lexical_block | |
10747 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10748 | || die->parent->tag == DW_TAG_catch_block |
10749 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10750 | return 0; |
10751 | return 1; | |
94af9270 KS |
10752 | |
10753 | default: | |
10754 | return 0; | |
10755 | } | |
10756 | } | |
10757 | ||
73b9be8b KS |
10758 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10759 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10760 | defined for the given DIE. */ | |
10761 | ||
10762 | static struct attribute * | |
10763 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10764 | { | |
10765 | struct attribute *attr; | |
10766 | ||
10767 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10768 | if (attr == NULL) | |
10769 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10770 | ||
10771 | return attr; | |
10772 | } | |
10773 | ||
10774 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10775 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10776 | defined for the given DIE. */ | |
10777 | ||
10778 | static const char * | |
10779 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10780 | { | |
10781 | const char *linkage_name; | |
10782 | ||
10783 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10784 | if (linkage_name == NULL) | |
10785 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10786 | ||
10787 | return linkage_name; | |
10788 | } | |
10789 | ||
94af9270 | 10790 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10791 | compute the physname for the object, which include a method's: |
9c37b5ae | 10792 | - formal parameters (C++), |
a766d390 | 10793 | - receiver type (Go), |
a766d390 DE |
10794 | |
10795 | The term "physname" is a bit confusing. | |
10796 | For C++, for example, it is the demangled name. | |
10797 | For Go, for example, it's the mangled name. | |
94af9270 | 10798 | |
af6b7be1 JB |
10799 | For Ada, return the DIE's linkage name rather than the fully qualified |
10800 | name. PHYSNAME is ignored.. | |
10801 | ||
94af9270 KS |
10802 | The result is allocated on the objfile_obstack and canonicalized. */ |
10803 | ||
10804 | static const char * | |
15d034d0 TT |
10805 | dwarf2_compute_name (const char *name, |
10806 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10807 | int physname) |
10808 | { | |
518817b3 | 10809 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10810 | |
94af9270 KS |
10811 | if (name == NULL) |
10812 | name = dwarf2_name (die, cu); | |
10813 | ||
2ee7123e DE |
10814 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10815 | but otherwise compute it by typename_concat inside GDB. | |
10816 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10817 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10818 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10819 | will set the demangled name to the result of dwarf2_full_name, and it is |
10820 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10821 | if (cu->language == language_ada |
10822 | || (cu->language == language_fortran && physname)) | |
10823 | { | |
10824 | /* For Ada unit, we prefer the linkage name over the name, as | |
10825 | the former contains the exported name, which the user expects | |
10826 | to be able to reference. Ideally, we want the user to be able | |
10827 | to reference this entity using either natural or linkage name, | |
10828 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10829 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10830 | |
2ee7123e DE |
10831 | if (linkage_name != NULL) |
10832 | return linkage_name; | |
f55ee35c JK |
10833 | } |
10834 | ||
94af9270 KS |
10835 | /* These are the only languages we know how to qualify names in. */ |
10836 | if (name != NULL | |
9c37b5ae | 10837 | && (cu->language == language_cplus |
c44af4eb TT |
10838 | || cu->language == language_fortran || cu->language == language_d |
10839 | || cu->language == language_rust)) | |
94af9270 KS |
10840 | { |
10841 | if (die_needs_namespace (die, cu)) | |
10842 | { | |
0d5cff50 | 10843 | const char *prefix; |
34a68019 | 10844 | const char *canonical_name = NULL; |
94af9270 | 10845 | |
d7e74731 PA |
10846 | string_file buf; |
10847 | ||
94af9270 | 10848 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10849 | if (*prefix != '\0') |
10850 | { | |
43816ebc TT |
10851 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10852 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10853 | |
43816ebc | 10854 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10855 | } |
10856 | else | |
d7e74731 | 10857 | buf.puts (name); |
94af9270 | 10858 | |
98bfdba5 PA |
10859 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10860 | as children with DW_TAG_template_type_param or | |
10861 | DW_TAG_value_type_param. If the latter, add them to the name | |
10862 | here. If the name already has template parameters, then | |
10863 | skip this step; some versions of GCC emit both, and | |
10864 | it is more efficient to use the pre-computed name. | |
10865 | ||
10866 | Something to keep in mind about this process: it is very | |
10867 | unlikely, or in some cases downright impossible, to produce | |
10868 | something that will match the mangled name of a function. | |
10869 | If the definition of the function has the same debug info, | |
10870 | we should be able to match up with it anyway. But fallbacks | |
10871 | using the minimal symbol, for instance to find a method | |
10872 | implemented in a stripped copy of libstdc++, will not work. | |
10873 | If we do not have debug info for the definition, we will have to | |
10874 | match them up some other way. | |
10875 | ||
10876 | When we do name matching there is a related problem with function | |
10877 | templates; two instantiated function templates are allowed to | |
10878 | differ only by their return types, which we do not add here. */ | |
10879 | ||
10880 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10881 | { | |
10882 | struct attribute *attr; | |
10883 | struct die_info *child; | |
10884 | int first = 1; | |
10885 | ||
10886 | die->building_fullname = 1; | |
10887 | ||
10888 | for (child = die->child; child != NULL; child = child->sibling) | |
10889 | { | |
10890 | struct type *type; | |
12df843f | 10891 | LONGEST value; |
d521ce57 | 10892 | const gdb_byte *bytes; |
98bfdba5 PA |
10893 | struct dwarf2_locexpr_baton *baton; |
10894 | struct value *v; | |
10895 | ||
10896 | if (child->tag != DW_TAG_template_type_param | |
10897 | && child->tag != DW_TAG_template_value_param) | |
10898 | continue; | |
10899 | ||
10900 | if (first) | |
10901 | { | |
d7e74731 | 10902 | buf.puts ("<"); |
98bfdba5 PA |
10903 | first = 0; |
10904 | } | |
10905 | else | |
d7e74731 | 10906 | buf.puts (", "); |
98bfdba5 PA |
10907 | |
10908 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10909 | if (attr == NULL) | |
10910 | { | |
b98664d3 | 10911 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10912 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10913 | continue; |
10914 | } | |
10915 | type = die_type (child, cu); | |
10916 | ||
10917 | if (child->tag == DW_TAG_template_type_param) | |
10918 | { | |
c1ec8cea TT |
10919 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10920 | &type_print_raw_options); | |
98bfdba5 PA |
10921 | continue; |
10922 | } | |
10923 | ||
10924 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10925 | if (attr == NULL) | |
10926 | { | |
b98664d3 | 10927 | complaint (_("template parameter missing " |
3e43a32a | 10928 | "DW_AT_const_value")); |
d7e74731 | 10929 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10930 | continue; |
10931 | } | |
10932 | ||
10933 | dwarf2_const_value_attr (attr, type, name, | |
10934 | &cu->comp_unit_obstack, cu, | |
10935 | &value, &bytes, &baton); | |
10936 | ||
10937 | if (TYPE_NOSIGN (type)) | |
10938 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10939 | changed, this can use value_print instead. */ | |
d7e74731 | 10940 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10941 | else |
10942 | { | |
10943 | struct value_print_options opts; | |
10944 | ||
10945 | if (baton != NULL) | |
10946 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10947 | baton->data, | |
10948 | baton->size, | |
10949 | baton->per_cu); | |
10950 | else if (bytes != NULL) | |
10951 | { | |
10952 | v = allocate_value (type); | |
10953 | memcpy (value_contents_writeable (v), bytes, | |
10954 | TYPE_LENGTH (type)); | |
10955 | } | |
10956 | else | |
10957 | v = value_from_longest (type, value); | |
10958 | ||
3e43a32a MS |
10959 | /* Specify decimal so that we do not depend on |
10960 | the radix. */ | |
98bfdba5 PA |
10961 | get_formatted_print_options (&opts, 'd'); |
10962 | opts.raw = 1; | |
d7e74731 | 10963 | value_print (v, &buf, &opts); |
98bfdba5 | 10964 | release_value (v); |
98bfdba5 PA |
10965 | } |
10966 | } | |
10967 | ||
10968 | die->building_fullname = 0; | |
10969 | ||
10970 | if (!first) | |
10971 | { | |
10972 | /* Close the argument list, with a space if necessary | |
10973 | (nested templates). */ | |
d7e74731 PA |
10974 | if (!buf.empty () && buf.string ().back () == '>') |
10975 | buf.puts (" >"); | |
98bfdba5 | 10976 | else |
d7e74731 | 10977 | buf.puts (">"); |
98bfdba5 PA |
10978 | } |
10979 | } | |
10980 | ||
9c37b5ae | 10981 | /* For C++ methods, append formal parameter type |
94af9270 | 10982 | information, if PHYSNAME. */ |
6e70227d | 10983 | |
94af9270 | 10984 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10985 | && cu->language == language_cplus) |
94af9270 KS |
10986 | { |
10987 | struct type *type = read_type_die (die, cu); | |
10988 | ||
d7e74731 | 10989 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10990 | &type_print_raw_options); |
94af9270 | 10991 | |
9c37b5ae | 10992 | if (cu->language == language_cplus) |
94af9270 | 10993 | { |
60430eff DJ |
10994 | /* Assume that an artificial first parameter is |
10995 | "this", but do not crash if it is not. RealView | |
10996 | marks unnamed (and thus unused) parameters as | |
10997 | artificial; there is no way to differentiate | |
10998 | the two cases. */ | |
94af9270 KS |
10999 | if (TYPE_NFIELDS (type) > 0 |
11000 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 11001 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
11002 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
11003 | 0)))) | |
d7e74731 | 11004 | buf.puts (" const"); |
94af9270 KS |
11005 | } |
11006 | } | |
11007 | ||
d7e74731 | 11008 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
11009 | |
11010 | if (cu->language == language_cplus) | |
34a68019 | 11011 | canonical_name |
322a8516 | 11012 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11013 | &objfile->per_bfd->storage_obstack); |
11014 | ||
11015 | /* If we only computed INTERMEDIATE_NAME, or if | |
11016 | INTERMEDIATE_NAME is already canonical, then we need to | |
11017 | copy it to the appropriate obstack. */ | |
322a8516 | 11018 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
efba19b0 TT |
11019 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, |
11020 | intermediate_name); | |
34a68019 TT |
11021 | else |
11022 | name = canonical_name; | |
94af9270 KS |
11023 | } |
11024 | } | |
11025 | ||
11026 | return name; | |
11027 | } | |
11028 | ||
0114d602 DJ |
11029 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11030 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11031 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11032 | not have a name. NAME may either be from a previous call to |
11033 | dwarf2_name or NULL. | |
11034 | ||
9c37b5ae | 11035 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11036 | |
11037 | static const char * | |
15d034d0 | 11038 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11039 | { |
94af9270 KS |
11040 | return dwarf2_compute_name (name, die, cu, 0); |
11041 | } | |
0114d602 | 11042 | |
94af9270 KS |
11043 | /* Construct a physname for the given DIE in CU. NAME may either be |
11044 | from a previous call to dwarf2_name or NULL. The result will be | |
11045 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11046 | name. | |
0114d602 | 11047 | |
9c37b5ae | 11048 | The output string will be canonicalized (if C++). */ |
0114d602 | 11049 | |
94af9270 | 11050 | static const char * |
15d034d0 | 11051 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11052 | { |
518817b3 | 11053 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11054 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11055 | int need_copy = 1; |
11056 | ||
11057 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11058 | on its own. */ | |
11059 | if (!die_needs_namespace (die, cu)) | |
11060 | return dwarf2_compute_name (name, die, cu, 1); | |
11061 | ||
73b9be8b | 11062 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11063 | |
e98c9e7c TT |
11064 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11065 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11066 | if (cu->language == language_rust && mangled != NULL | |
11067 | && strchr (mangled, '{') != NULL) | |
11068 | mangled = NULL; | |
11069 | ||
900e11f9 JK |
11070 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11071 | has computed. */ | |
791afaa2 | 11072 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11073 | if (mangled != NULL) |
900e11f9 | 11074 | { |
900e11f9 | 11075 | |
59cc4834 JB |
11076 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11077 | { | |
11078 | /* Do nothing (do not demangle the symbol name). */ | |
11079 | } | |
11080 | else if (cu->language == language_go) | |
a766d390 | 11081 | { |
5e2db402 TT |
11082 | /* This is a lie, but we already lie to the caller new_symbol. |
11083 | new_symbol assumes we return the mangled name. | |
a766d390 | 11084 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11085 | } |
11086 | else | |
11087 | { | |
0eb876f5 JB |
11088 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11089 | their return type. It is easier for GDB users to search | |
11090 | for such functions as `name(params)' than `long name(params)'. | |
11091 | In such case the minimal symbol names do not match the full | |
11092 | symbol names but for template functions there is never a need | |
11093 | to look up their definition from their declaration so | |
11094 | the only disadvantage remains the minimal symbol variant | |
11095 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11096 | demangled.reset (gdb_demangle (mangled, |
11097 | (DMGL_PARAMS | DMGL_ANSI | |
11098 | | DMGL_RET_DROP))); | |
a766d390 | 11099 | } |
900e11f9 | 11100 | if (demangled) |
791afaa2 | 11101 | canon = demangled.get (); |
900e11f9 JK |
11102 | else |
11103 | { | |
11104 | canon = mangled; | |
11105 | need_copy = 0; | |
11106 | } | |
11107 | } | |
11108 | ||
11109 | if (canon == NULL || check_physname) | |
11110 | { | |
11111 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11112 | ||
11113 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11114 | { | |
11115 | /* It may not mean a bug in GDB. The compiler could also | |
11116 | compute DW_AT_linkage_name incorrectly. But in such case | |
11117 | GDB would need to be bug-to-bug compatible. */ | |
11118 | ||
b98664d3 | 11119 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11120 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11121 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11122 | objfile_name (objfile)); |
900e11f9 JK |
11123 | |
11124 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11125 | is available here - over computed PHYSNAME. It is safer | |
11126 | against both buggy GDB and buggy compilers. */ | |
11127 | ||
11128 | retval = canon; | |
11129 | } | |
11130 | else | |
11131 | { | |
11132 | retval = physname; | |
11133 | need_copy = 0; | |
11134 | } | |
11135 | } | |
11136 | else | |
11137 | retval = canon; | |
11138 | ||
11139 | if (need_copy) | |
021887d8 | 11140 | retval = obstack_strdup (&objfile->per_bfd->storage_obstack, retval); |
900e11f9 | 11141 | |
900e11f9 | 11142 | return retval; |
0114d602 DJ |
11143 | } |
11144 | ||
74921315 KS |
11145 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11146 | a new symbol for it. | |
11147 | ||
11148 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11149 | ||
11150 | static int | |
11151 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11152 | { | |
11153 | struct attribute *attr; | |
11154 | ||
11155 | /* If the die does not have a name, this is not a namespace | |
11156 | alias. */ | |
11157 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11158 | if (attr != NULL) | |
11159 | { | |
11160 | int num; | |
11161 | struct die_info *d = die; | |
11162 | struct dwarf2_cu *imported_cu = cu; | |
11163 | ||
11164 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11165 | keep inspecting DIEs until we hit the underlying import. */ | |
11166 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11167 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11168 | { | |
11169 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11170 | if (attr == NULL) | |
11171 | break; | |
11172 | ||
11173 | d = follow_die_ref (d, attr, &imported_cu); | |
11174 | if (d->tag != DW_TAG_imported_declaration) | |
11175 | break; | |
11176 | } | |
11177 | ||
11178 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11179 | { | |
b98664d3 | 11180 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11181 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11182 | return 0; |
11183 | } | |
11184 | ||
11185 | if (attr != NULL) | |
11186 | { | |
11187 | struct type *type; | |
9c541725 | 11188 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11189 | |
9c541725 | 11190 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11191 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11192 | { | |
11193 | /* This declaration is a global namespace alias. Add | |
11194 | a symbol for it whose type is the aliased namespace. */ | |
11195 | new_symbol (die, type, cu); | |
11196 | return 1; | |
11197 | } | |
11198 | } | |
11199 | } | |
11200 | ||
11201 | return 0; | |
11202 | } | |
11203 | ||
22cee43f | 11204 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11205 | current context for CU. |
22cee43f PMR |
11206 | |
11207 | For Ada, imported declarations can materialize renamings, which *may* be | |
11208 | global. However it is impossible (for now?) in DWARF to distinguish | |
11209 | "external" imported declarations and "static" ones. As all imported | |
11210 | declarations seem to be static in all other languages, make them all CU-wide | |
11211 | global only in Ada. */ | |
11212 | ||
11213 | static struct using_direct ** | |
804d2729 | 11214 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11215 | { |
c24bdb02 KS |
11216 | if (cu->language == language_ada |
11217 | && cu->get_builder ()->outermost_context_p ()) | |
11218 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 11219 | else |
c24bdb02 | 11220 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
11221 | } |
11222 | ||
27aa8d6a SW |
11223 | /* Read the import statement specified by the given die and record it. */ |
11224 | ||
11225 | static void | |
11226 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11227 | { | |
518817b3 | 11228 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11229 | struct attribute *import_attr; |
32019081 | 11230 | struct die_info *imported_die, *child_die; |
de4affc9 | 11231 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11232 | const char *imported_name; |
794684b6 | 11233 | const char *imported_name_prefix; |
13387711 SW |
11234 | const char *canonical_name; |
11235 | const char *import_alias; | |
11236 | const char *imported_declaration = NULL; | |
794684b6 | 11237 | const char *import_prefix; |
eb1e02fd | 11238 | std::vector<const char *> excludes; |
13387711 | 11239 | |
27aa8d6a SW |
11240 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11241 | if (import_attr == NULL) | |
11242 | { | |
b98664d3 | 11243 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11244 | dwarf_tag_name (die->tag)); |
11245 | return; | |
11246 | } | |
11247 | ||
de4affc9 CC |
11248 | imported_cu = cu; |
11249 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11250 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11251 | if (imported_name == NULL) |
11252 | { | |
11253 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11254 | ||
11255 | The import in the following code: | |
11256 | namespace A | |
11257 | { | |
11258 | typedef int B; | |
11259 | } | |
11260 | ||
11261 | int main () | |
11262 | { | |
11263 | using A::B; | |
11264 | B b; | |
11265 | return b; | |
11266 | } | |
11267 | ||
11268 | ... | |
11269 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11270 | <52> DW_AT_decl_file : 1 | |
11271 | <53> DW_AT_decl_line : 6 | |
11272 | <54> DW_AT_import : <0x75> | |
11273 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11274 | <59> DW_AT_name : B | |
11275 | <5b> DW_AT_decl_file : 1 | |
11276 | <5c> DW_AT_decl_line : 2 | |
11277 | <5d> DW_AT_type : <0x6e> | |
11278 | ... | |
11279 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11280 | <76> DW_AT_byte_size : 4 | |
11281 | <77> DW_AT_encoding : 5 (signed) | |
11282 | ||
11283 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11284 | This case will be ignored until the gcc bug is fixed. */ | |
11285 | return; | |
11286 | } | |
11287 | ||
82856980 SW |
11288 | /* Figure out the local name after import. */ |
11289 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11290 | |
794684b6 SW |
11291 | /* Figure out where the statement is being imported to. */ |
11292 | import_prefix = determine_prefix (die, cu); | |
11293 | ||
11294 | /* Figure out what the scope of the imported die is and prepend it | |
11295 | to the name of the imported die. */ | |
de4affc9 | 11296 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11297 | |
f55ee35c JK |
11298 | if (imported_die->tag != DW_TAG_namespace |
11299 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11300 | { |
13387711 SW |
11301 | imported_declaration = imported_name; |
11302 | canonical_name = imported_name_prefix; | |
794684b6 | 11303 | } |
13387711 | 11304 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11305 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11306 | imported_name_prefix, |
11307 | (cu->language == language_d ? "." : "::"), | |
11308 | imported_name, (char *) NULL); | |
13387711 SW |
11309 | else |
11310 | canonical_name = imported_name; | |
794684b6 | 11311 | |
32019081 JK |
11312 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11313 | for (child_die = die->child; child_die && child_die->tag; | |
11314 | child_die = sibling_die (child_die)) | |
11315 | { | |
11316 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11317 | represented by an imported module entry with an import attribute | |
11318 | referring to the module and owned entries corresponding to those | |
11319 | entities that are renamed as part of being imported. */ | |
11320 | ||
11321 | if (child_die->tag != DW_TAG_imported_declaration) | |
11322 | { | |
b98664d3 | 11323 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11324 | "- DIE at %s [in module %s]"), |
11325 | sect_offset_str (child_die->sect_off), | |
11326 | objfile_name (objfile)); | |
32019081 JK |
11327 | continue; |
11328 | } | |
11329 | ||
11330 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11331 | if (import_attr == NULL) | |
11332 | { | |
b98664d3 | 11333 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11334 | dwarf_tag_name (child_die->tag)); |
11335 | continue; | |
11336 | } | |
11337 | ||
11338 | imported_cu = cu; | |
11339 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11340 | &imported_cu); | |
11341 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11342 | if (imported_name == NULL) | |
11343 | { | |
b98664d3 | 11344 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11345 | "imported name - DIE at %s [in module %s]"), |
11346 | sect_offset_str (child_die->sect_off), | |
11347 | objfile_name (objfile)); | |
32019081 JK |
11348 | continue; |
11349 | } | |
11350 | ||
eb1e02fd | 11351 | excludes.push_back (imported_name); |
32019081 JK |
11352 | |
11353 | process_die (child_die, cu); | |
11354 | } | |
11355 | ||
804d2729 | 11356 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11357 | import_prefix, |
11358 | canonical_name, | |
11359 | import_alias, | |
11360 | imported_declaration, | |
11361 | excludes, | |
11362 | 0, | |
11363 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11364 | } |
11365 | ||
5230b05a WT |
11366 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11367 | types, but gives them a size of zero. Starting with version 14, | |
11368 | ICC is compatible with GCC. */ | |
11369 | ||
9068261f | 11370 | static bool |
5230b05a WT |
11371 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11372 | { | |
11373 | if (!cu->checked_producer) | |
11374 | check_producer (cu); | |
11375 | ||
11376 | return cu->producer_is_icc_lt_14; | |
11377 | } | |
11378 | ||
eb77c9df AB |
11379 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11380 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11381 | which says that void functions should not have a DW_AT_type. */ | |
11382 | ||
11383 | static bool | |
11384 | producer_is_icc (struct dwarf2_cu *cu) | |
11385 | { | |
11386 | if (!cu->checked_producer) | |
11387 | check_producer (cu); | |
11388 | ||
11389 | return cu->producer_is_icc; | |
11390 | } | |
11391 | ||
1b80a9fa JK |
11392 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11393 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11394 | this, it was first present in GCC release 4.3.0. */ | |
11395 | ||
9068261f | 11396 | static bool |
1b80a9fa JK |
11397 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11398 | { | |
11399 | if (!cu->checked_producer) | |
11400 | check_producer (cu); | |
11401 | ||
11402 | return cu->producer_is_gcc_lt_4_3; | |
11403 | } | |
11404 | ||
d721ba37 PA |
11405 | static file_and_directory |
11406 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11407 | { |
d721ba37 PA |
11408 | file_and_directory res; |
11409 | ||
9291a0cd TT |
11410 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11411 | is not a source language identifier. */ | |
d721ba37 PA |
11412 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11413 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11414 | |
d721ba37 PA |
11415 | if (res.comp_dir == NULL |
11416 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11417 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11418 | { |
d721ba37 PA |
11419 | res.comp_dir_storage = ldirname (res.name); |
11420 | if (!res.comp_dir_storage.empty ()) | |
11421 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11422 | } |
d721ba37 | 11423 | if (res.comp_dir != NULL) |
9291a0cd TT |
11424 | { |
11425 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11426 | directory, get rid of it. */ | |
d721ba37 | 11427 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11428 | |
d721ba37 PA |
11429 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11430 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11431 | } |
11432 | ||
d721ba37 PA |
11433 | if (res.name == NULL) |
11434 | res.name = "<unknown>"; | |
11435 | ||
11436 | return res; | |
9291a0cd TT |
11437 | } |
11438 | ||
f4dc4d17 DE |
11439 | /* Handle DW_AT_stmt_list for a compilation unit. |
11440 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11441 | COMP_DIR is the compilation directory. LOWPC is passed to |
11442 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11443 | |
11444 | static void | |
11445 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11446 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11447 | { |
518817b3 SM |
11448 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11449 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11450 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11451 | struct attribute *attr; |
527f3840 JK |
11452 | struct line_header line_header_local; |
11453 | hashval_t line_header_local_hash; | |
527f3840 JK |
11454 | void **slot; |
11455 | int decode_mapping; | |
2ab95328 | 11456 | |
f4dc4d17 DE |
11457 | gdb_assert (! cu->per_cu->is_debug_types); |
11458 | ||
2ab95328 | 11459 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11460 | if (attr == NULL) |
11461 | return; | |
11462 | ||
9c541725 | 11463 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11464 | |
11465 | /* The line header hash table is only created if needed (it exists to | |
11466 | prevent redundant reading of the line table for partial_units). | |
11467 | If we're given a partial_unit, we'll need it. If we're given a | |
11468 | compile_unit, then use the line header hash table if it's already | |
11469 | created, but don't create one just yet. */ | |
11470 | ||
11471 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11472 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11473 | { |
527f3840 JK |
11474 | dwarf2_per_objfile->line_header_hash |
11475 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11476 | line_header_eq_voidp, | |
11477 | free_line_header_voidp, | |
11478 | &objfile->objfile_obstack, | |
11479 | hashtab_obstack_allocate, | |
11480 | dummy_obstack_deallocate); | |
11481 | } | |
2ab95328 | 11482 | |
9c541725 | 11483 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11484 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11485 | line_header_local_hash = line_header_hash (&line_header_local); | |
11486 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11487 | { | |
11488 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11489 | &line_header_local, | |
11490 | line_header_local_hash, NO_INSERT); | |
11491 | ||
11492 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11493 | is not present in *SLOT (since if there is something in *SLOT then | |
11494 | it will be for a partial_unit). */ | |
11495 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11496 | { |
527f3840 | 11497 | gdb_assert (*slot != NULL); |
9a3c8263 | 11498 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11499 | return; |
dee91e82 | 11500 | } |
2ab95328 | 11501 | } |
527f3840 JK |
11502 | |
11503 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11504 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11505 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11506 | if (lh == NULL) | |
527f3840 | 11507 | return; |
4c8aa72d PA |
11508 | |
11509 | cu->line_header = lh.release (); | |
11510 | cu->line_header_die_owner = die; | |
527f3840 JK |
11511 | |
11512 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11513 | slot = NULL; | |
11514 | else | |
11515 | { | |
11516 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11517 | &line_header_local, | |
11518 | line_header_local_hash, INSERT); | |
11519 | gdb_assert (slot != NULL); | |
11520 | } | |
11521 | if (slot != NULL && *slot == NULL) | |
11522 | { | |
11523 | /* This newly decoded line number information unit will be owned | |
11524 | by line_header_hash hash table. */ | |
11525 | *slot = cu->line_header; | |
4c8aa72d | 11526 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11527 | } |
11528 | else | |
11529 | { | |
11530 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11531 | may be already used by multiple CUs. Create only temporary decoded | |
11532 | line_header for this CU - it may happen at most once for each line | |
11533 | number information unit. And if we're not using line_header_hash | |
11534 | then this is what we want as well. */ | |
11535 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11536 | } |
11537 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11538 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11539 | decode_mapping); | |
fff8551c | 11540 | |
2ab95328 TT |
11541 | } |
11542 | ||
95554aad | 11543 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11544 | |
c906108c | 11545 | static void |
e7c27a73 | 11546 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11547 | { |
518817b3 SM |
11548 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11549 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11550 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11551 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11552 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11553 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11554 | struct attribute *attr; | |
c906108c | 11555 | struct die_info *child_die; |
e142c38c | 11556 | CORE_ADDR baseaddr; |
6e70227d | 11557 | |
380618d6 | 11558 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11559 | baseaddr = objfile->text_section_offset (); |
c906108c | 11560 | |
fae299cd | 11561 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11562 | |
11563 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11564 | from finish_block. */ | |
2acceee2 | 11565 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11566 | lowpc = highpc; |
3e29f34a | 11567 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11568 | |
d721ba37 | 11569 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11570 | |
f4b8a18d KW |
11571 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11572 | standardised yet. As a workaround for the language detection we fall | |
11573 | back to the DW_AT_producer string. */ | |
11574 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11575 | cu->language = language_opencl; | |
11576 | ||
3019eac3 DE |
11577 | /* Similar hack for Go. */ |
11578 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11579 | set_cu_language (DW_LANG_Go, cu); | |
11580 | ||
c24bdb02 | 11581 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11582 | |
11583 | /* Decode line number information if present. We do this before | |
11584 | processing child DIEs, so that the line header table is available | |
11585 | for DW_AT_decl_file. */ | |
d721ba37 | 11586 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11587 | |
11588 | /* Process all dies in compilation unit. */ | |
11589 | if (die->child != NULL) | |
11590 | { | |
11591 | child_die = die->child; | |
11592 | while (child_die && child_die->tag) | |
11593 | { | |
11594 | process_die (child_die, cu); | |
11595 | child_die = sibling_die (child_die); | |
11596 | } | |
11597 | } | |
11598 | ||
11599 | /* Decode macro information, if present. Dwarf 2 macro information | |
11600 | refers to information in the line number info statement program | |
11601 | header, so we can only read it if we've read the header | |
11602 | successfully. */ | |
0af92d60 JK |
11603 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11604 | if (attr == NULL) | |
11605 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11606 | if (attr && cu->line_header) |
11607 | { | |
11608 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11609 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11610 | |
43f3e411 | 11611 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11612 | } |
11613 | else | |
11614 | { | |
11615 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11616 | if (attr && cu->line_header) | |
11617 | { | |
11618 | unsigned int macro_offset = DW_UNSND (attr); | |
11619 | ||
43f3e411 | 11620 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11621 | } |
11622 | } | |
3019eac3 DE |
11623 | } |
11624 | ||
c24bdb02 KS |
11625 | void |
11626 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11627 | { |
f4dc4d17 DE |
11628 | struct type_unit_group *tu_group; |
11629 | int first_time; | |
3019eac3 | 11630 | struct attribute *attr; |
9c541725 | 11631 | unsigned int i; |
0186c6a7 | 11632 | struct signatured_type *sig_type; |
3019eac3 | 11633 | |
f4dc4d17 | 11634 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11635 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11636 | |
c24bdb02 | 11637 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11638 | |
f4dc4d17 | 11639 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11640 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11641 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11642 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11643 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11644 | |
11645 | /* If we've already processed this stmt_list there's no real need to | |
11646 | do it again, we could fake it and just recreate the part we need | |
11647 | (file name,index -> symtab mapping). If data shows this optimization | |
11648 | is useful we can do it then. */ | |
43f3e411 | 11649 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11650 | |
11651 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11652 | debug info. */ | |
fff8551c | 11653 | line_header_up lh; |
f4dc4d17 | 11654 | if (attr != NULL) |
3019eac3 | 11655 | { |
9c541725 | 11656 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11657 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11658 | } |
11659 | if (lh == NULL) | |
11660 | { | |
11661 | if (first_time) | |
c24bdb02 | 11662 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11663 | else |
11664 | { | |
11665 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11666 | gdb_assert (m_builder == nullptr); |
804d2729 | 11667 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11668 | m_builder.reset (new struct buildsym_compunit |
11669 | (COMPUNIT_OBJFILE (cust), "", | |
11670 | COMPUNIT_DIRNAME (cust), | |
11671 | compunit_language (cust), | |
11672 | 0, cust)); | |
f4dc4d17 | 11673 | } |
f4dc4d17 | 11674 | return; |
3019eac3 DE |
11675 | } |
11676 | ||
c24bdb02 KS |
11677 | line_header = lh.release (); |
11678 | line_header_die_owner = die; | |
3019eac3 | 11679 | |
f4dc4d17 DE |
11680 | if (first_time) |
11681 | { | |
c24bdb02 | 11682 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11683 | |
1fd60fc0 DE |
11684 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11685 | still initializing it, and our caller (a few levels up) | |
11686 | process_full_type_unit still needs to know if this is the first | |
11687 | time. */ | |
11688 | ||
7ba99d21 | 11689 | tu_group->num_symtabs = line_header->file_names_size (); |
4c8aa72d | 11690 | tu_group->symtabs = XNEWVEC (struct symtab *, |
7ba99d21 | 11691 | line_header->file_names_size ()); |
3019eac3 | 11692 | |
7ba99d21 AT |
11693 | auto &file_names = line_header->file_names (); |
11694 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11695 | { |
7ba99d21 | 11696 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11697 | dwarf2_start_subfile (this, fe.name, |
11698 | fe.include_dir (line_header)); | |
11699 | buildsym_compunit *b = get_builder (); | |
11700 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11701 | { |
4c8aa72d PA |
11702 | /* NOTE: start_subfile will recognize when it's been |
11703 | passed a file it has already seen. So we can't | |
11704 | assume there's a simple mapping from | |
11705 | cu->line_header->file_names to subfiles, plus | |
11706 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11707 | b->get_current_subfile ()->symtab |
11708 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11709 | } |
11710 | ||
c24bdb02 | 11711 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11712 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11713 | } |
11714 | } | |
11715 | else | |
3019eac3 | 11716 | { |
c24bdb02 | 11717 | gdb_assert (m_builder == nullptr); |
804d2729 | 11718 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11719 | m_builder.reset (new struct buildsym_compunit |
11720 | (COMPUNIT_OBJFILE (cust), "", | |
11721 | COMPUNIT_DIRNAME (cust), | |
11722 | compunit_language (cust), | |
11723 | 0, cust)); | |
f4dc4d17 | 11724 | |
7ba99d21 AT |
11725 | auto &file_names = line_header->file_names (); |
11726 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11727 | { |
7ba99d21 | 11728 | file_entry &fe = file_names[i]; |
4c8aa72d | 11729 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11730 | } |
3019eac3 DE |
11731 | } |
11732 | ||
f4dc4d17 DE |
11733 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11734 | so they don't have a "real" (so to speak) symtab anyway. | |
11735 | There is later code that will assign the main symtab to all symbols | |
11736 | that don't have one. We need to handle the case of a symbol with a | |
11737 | missing symtab (DW_AT_decl_file) anyway. */ | |
11738 | } | |
3019eac3 | 11739 | |
f4dc4d17 DE |
11740 | /* Process DW_TAG_type_unit. |
11741 | For TUs we want to skip the first top level sibling if it's not the | |
11742 | actual type being defined by this TU. In this case the first top | |
11743 | level sibling is there to provide context only. */ | |
3019eac3 | 11744 | |
f4dc4d17 DE |
11745 | static void |
11746 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11747 | { | |
11748 | struct die_info *child_die; | |
3019eac3 | 11749 | |
f4dc4d17 DE |
11750 | prepare_one_comp_unit (cu, die, language_minimal); |
11751 | ||
11752 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11753 | We do this before processing child DIEs, so that the line header table | |
11754 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11755 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11756 | |
11757 | if (die->child != NULL) | |
11758 | { | |
11759 | child_die = die->child; | |
11760 | while (child_die && child_die->tag) | |
11761 | { | |
11762 | process_die (child_die, cu); | |
11763 | child_die = sibling_die (child_die); | |
11764 | } | |
11765 | } | |
3019eac3 DE |
11766 | } |
11767 | \f | |
80626a55 DE |
11768 | /* DWO/DWP files. |
11769 | ||
11770 | http://gcc.gnu.org/wiki/DebugFission | |
11771 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11772 | ||
11773 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11774 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11775 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11776 | |
11777 | static hashval_t | |
11778 | hash_dwo_file (const void *item) | |
11779 | { | |
9a3c8263 | 11780 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11781 | hashval_t hash; |
3019eac3 | 11782 | |
a2ce51a0 DE |
11783 | hash = htab_hash_string (dwo_file->dwo_name); |
11784 | if (dwo_file->comp_dir != NULL) | |
11785 | hash += htab_hash_string (dwo_file->comp_dir); | |
11786 | return hash; | |
3019eac3 DE |
11787 | } |
11788 | ||
11789 | static int | |
11790 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11791 | { | |
9a3c8263 SM |
11792 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11793 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11794 | |
a2ce51a0 DE |
11795 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11796 | return 0; | |
11797 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11798 | return lhs->comp_dir == rhs->comp_dir; | |
11799 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11800 | } |
11801 | ||
11802 | /* Allocate a hash table for DWO files. */ | |
11803 | ||
51ac9db5 | 11804 | static htab_up |
ed2dc618 | 11805 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11806 | { |
51ac9db5 SM |
11807 | auto delete_dwo_file = [] (void *item) |
11808 | { | |
11809 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11810 | ||
11811 | delete dwo_file; | |
11812 | }; | |
11813 | ||
11814 | return htab_up (htab_create_alloc_ex (41, | |
11815 | hash_dwo_file, | |
11816 | eq_dwo_file, | |
11817 | delete_dwo_file, | |
11818 | &objfile->objfile_obstack, | |
11819 | hashtab_obstack_allocate, | |
11820 | dummy_obstack_deallocate)); | |
3019eac3 DE |
11821 | } |
11822 | ||
80626a55 DE |
11823 | /* Lookup DWO file DWO_NAME. */ |
11824 | ||
11825 | static void ** | |
ed2dc618 SM |
11826 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11827 | const char *dwo_name, | |
11828 | const char *comp_dir) | |
80626a55 DE |
11829 | { |
11830 | struct dwo_file find_entry; | |
11831 | void **slot; | |
11832 | ||
11833 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11834 | dwarf2_per_objfile->dwo_files |
11835 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 | 11836 | |
0ac5b59e DE |
11837 | find_entry.dwo_name = dwo_name; |
11838 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11839 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11840 | INSERT); | |
80626a55 DE |
11841 | |
11842 | return slot; | |
11843 | } | |
11844 | ||
3019eac3 DE |
11845 | static hashval_t |
11846 | hash_dwo_unit (const void *item) | |
11847 | { | |
9a3c8263 | 11848 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11849 | |
11850 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11851 | return dwo_unit->signature; | |
11852 | } | |
11853 | ||
11854 | static int | |
11855 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11856 | { | |
9a3c8263 SM |
11857 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11858 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11859 | |
11860 | /* The signature is assumed to be unique within the DWO file. | |
11861 | So while object file CU dwo_id's always have the value zero, | |
11862 | that's OK, assuming each object file DWO file has only one CU, | |
11863 | and that's the rule for now. */ | |
11864 | return lhs->signature == rhs->signature; | |
11865 | } | |
11866 | ||
11867 | /* Allocate a hash table for DWO CUs,TUs. | |
11868 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11869 | ||
11870 | static htab_t | |
11871 | allocate_dwo_unit_table (struct objfile *objfile) | |
11872 | { | |
11873 | /* Start out with a pretty small number. | |
11874 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11875 | return htab_create_alloc_ex (3, | |
11876 | hash_dwo_unit, | |
11877 | eq_dwo_unit, | |
11878 | NULL, | |
11879 | &objfile->objfile_obstack, | |
11880 | hashtab_obstack_allocate, | |
11881 | dummy_obstack_deallocate); | |
11882 | } | |
11883 | ||
19c3d4c9 | 11884 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11885 | |
11886 | static void | |
19c3d4c9 DE |
11887 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11888 | const gdb_byte *info_ptr, | |
11889 | struct die_info *comp_unit_die, | |
11890 | int has_children, | |
c0ab21c2 TT |
11891 | struct dwo_file *dwo_file, |
11892 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11893 | { |
11894 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11895 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11896 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11897 | |
a084a2a6 AT |
11898 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11899 | if (!signature.has_value ()) | |
3019eac3 | 11900 | { |
b98664d3 | 11901 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11902 | " its dwo_id [in module %s]"), |
9d8780f0 | 11903 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11904 | return; |
11905 | } | |
11906 | ||
3019eac3 | 11907 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11908 | dwo_unit->signature = *signature; |
8a0459fd | 11909 | dwo_unit->section = section; |
9c541725 | 11910 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11911 | dwo_unit->length = cu->per_cu->length; |
11912 | ||
b4f54984 | 11913 | if (dwarf_read_debug) |
9d8780f0 SM |
11914 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11915 | sect_offset_str (sect_off), | |
9c541725 | 11916 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11917 | } |
11918 | ||
33c5cd75 | 11919 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11920 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11921 | |
33c5cd75 | 11922 | static void |
ed2dc618 | 11923 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
11924 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
11925 | dwarf2_section_info §ion, htab_t &cus_htab) | |
3019eac3 DE |
11926 | { |
11927 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11928 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11929 | |
33c5cd75 DB |
11930 | dwarf2_read_section (objfile, §ion); |
11931 | info_ptr = section.buffer; | |
3019eac3 DE |
11932 | |
11933 | if (info_ptr == NULL) | |
33c5cd75 | 11934 | return; |
3019eac3 | 11935 | |
b4f54984 | 11936 | if (dwarf_read_debug) |
19c3d4c9 DE |
11937 | { |
11938 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11939 | get_section_name (§ion), |
11940 | get_section_file_name (§ion)); | |
19c3d4c9 | 11941 | } |
3019eac3 | 11942 | |
33c5cd75 | 11943 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11944 | while (info_ptr < end_ptr) |
11945 | { | |
11946 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11947 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11948 | struct dwo_unit *dwo_unit; |
11949 | void **slot; | |
11950 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11951 | |
11952 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11953 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11954 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11955 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11956 | per_cu.section = §ion; | |
11957 | ||
c0ab21c2 TT |
11958 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11959 | if (!reader.dummy_p) | |
11960 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
11961 | reader.has_children, &dwo_file, &read_unit); | |
33c5cd75 DB |
11962 | info_ptr += per_cu.length; |
11963 | ||
11964 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11965 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11966 | continue; |
3019eac3 | 11967 | |
33c5cd75 DB |
11968 | if (cus_htab == NULL) |
11969 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11970 | |
33c5cd75 | 11971 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11972 | *dwo_unit = read_unit; |
33c5cd75 DB |
11973 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); |
11974 | gdb_assert (slot != NULL); | |
11975 | if (*slot != NULL) | |
19c3d4c9 | 11976 | { |
33c5cd75 DB |
11977 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11978 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11979 | |
b98664d3 | 11980 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11981 | " the entry at offset %s, signature %s"), |
11982 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11983 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11984 | } |
33c5cd75 | 11985 | *slot = (void *)dwo_unit; |
3019eac3 | 11986 | } |
3019eac3 DE |
11987 | } |
11988 | ||
80626a55 DE |
11989 | /* DWP file .debug_{cu,tu}_index section format: |
11990 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11991 | ||
d2415c6c DE |
11992 | DWP Version 1: |
11993 | ||
80626a55 DE |
11994 | Both index sections have the same format, and serve to map a 64-bit |
11995 | signature to a set of section numbers. Each section begins with a header, | |
11996 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11997 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11998 | aligned at 8-byte boundaries in the file. | |
11999 | ||
d2415c6c DE |
12000 | The index section header consists of: |
12001 | ||
12002 | V, 32 bit version number | |
12003 | -, 32 bits unused | |
12004 | N, 32 bit number of compilation units or type units in the index | |
12005 | M, 32 bit number of slots in the hash table | |
80626a55 | 12006 | |
d2415c6c | 12007 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12008 | |
d2415c6c DE |
12009 | The hash table begins at offset 16 in the section, and consists of an array |
12010 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12011 | order of the application binary). Unused slots in the hash table are 0. | |
12012 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12013 | |
d2415c6c DE |
12014 | The parallel table begins immediately after the hash table |
12015 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12016 | array of 32-bit indexes (using the byte order of the application binary), | |
12017 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12018 | table contains a 32-bit index into the pool of section numbers. For unused | |
12019 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12020 | |
73869dc2 DE |
12021 | The pool of section numbers begins immediately following the hash table |
12022 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12023 | section numbers consists of an array of 32-bit words (using the byte order | |
12024 | of the application binary). Each item in the array is indexed starting | |
12025 | from 0. The hash table entry provides the index of the first section | |
12026 | number in the set. Additional section numbers in the set follow, and the | |
12027 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12028 | ||
12029 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12030 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12031 | be the second entry. Other members of the set may follow in any order. | |
12032 | ||
12033 | --- | |
12034 | ||
12035 | DWP Version 2: | |
12036 | ||
12037 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12038 | and the entries in the index tables are now offsets into these sections. | |
12039 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12040 | section. | |
12041 | ||
12042 | Index Section Contents: | |
12043 | Header | |
12044 | Hash Table of Signatures dwp_hash_table.hash_table | |
12045 | Parallel Table of Indices dwp_hash_table.unit_table | |
12046 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12047 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12048 | ||
12049 | The index section header consists of: | |
12050 | ||
12051 | V, 32 bit version number | |
12052 | L, 32 bit number of columns in the table of section offsets | |
12053 | N, 32 bit number of compilation units or type units in the index | |
12054 | M, 32 bit number of slots in the hash table | |
12055 | ||
12056 | Numbers are recorded using the byte order of the application binary. | |
12057 | ||
12058 | The hash table has the same format as version 1. | |
12059 | The parallel table of indices has the same format as version 1, | |
12060 | except that the entries are origin-1 indices into the table of sections | |
12061 | offsets and the table of section sizes. | |
12062 | ||
12063 | The table of offsets begins immediately following the parallel table | |
12064 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12065 | a two-dimensional array of 32-bit words (using the byte order of the | |
12066 | application binary), with L columns and N+1 rows, in row-major order. | |
12067 | Each row in the array is indexed starting from 0. The first row provides | |
12068 | a key to the remaining rows: each column in this row provides an identifier | |
12069 | for a debug section, and the offsets in the same column of subsequent rows | |
12070 | refer to that section. The section identifiers are: | |
12071 | ||
12072 | DW_SECT_INFO 1 .debug_info.dwo | |
12073 | DW_SECT_TYPES 2 .debug_types.dwo | |
12074 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12075 | DW_SECT_LINE 4 .debug_line.dwo | |
12076 | DW_SECT_LOC 5 .debug_loc.dwo | |
12077 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12078 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12079 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12080 | ||
12081 | The offsets provided by the CU and TU index sections are the base offsets | |
12082 | for the contributions made by each CU or TU to the corresponding section | |
12083 | in the package file. Each CU and TU header contains an abbrev_offset | |
12084 | field, used to find the abbreviations table for that CU or TU within the | |
12085 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12086 | be interpreted as relative to the base offset given in the index section. | |
12087 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12088 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12089 | and offsets into other debug sections obtained from DWARF attributes should | |
12090 | also be interpreted as relative to the corresponding base offset. | |
12091 | ||
12092 | The table of sizes begins immediately following the table of offsets. | |
12093 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12094 | with L columns and N rows, in row-major order. Each row in the array is | |
12095 | indexed starting from 1 (row 0 is shared by the two tables). | |
12096 | ||
12097 | --- | |
12098 | ||
12099 | Hash table lookup is handled the same in version 1 and 2: | |
12100 | ||
12101 | We assume that N and M will not exceed 2^32 - 1. | |
12102 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12103 | ||
d2415c6c DE |
12104 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12105 | in the hash table is located as follows: | |
80626a55 | 12106 | |
d2415c6c DE |
12107 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12108 | the low-order k bits all set to 1. | |
80626a55 | 12109 | |
d2415c6c | 12110 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12111 | |
d2415c6c DE |
12112 | 3) If the hash table entry at index H matches the signature, use that |
12113 | entry. If the hash table entry at index H is unused (all zeroes), | |
12114 | terminate the search: the signature is not present in the table. | |
80626a55 | 12115 | |
d2415c6c | 12116 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12117 | |
d2415c6c | 12118 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12119 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12120 | |
12121 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12122 | .debug_{info,types}.dwo in DWP_FILE. | |
12123 | Returns NULL if there isn't one. | |
12124 | Note: This function processes DWP files only, not DWO files. */ | |
12125 | ||
12126 | static struct dwp_hash_table * | |
ed2dc618 SM |
12127 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12128 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12129 | { |
12130 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12131 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12132 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12133 | struct dwarf2_section_info *index; |
73869dc2 | 12134 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12135 | struct dwp_hash_table *htab; |
12136 | ||
12137 | if (is_debug_types) | |
12138 | index = &dwp_file->sections.tu_index; | |
12139 | else | |
12140 | index = &dwp_file->sections.cu_index; | |
12141 | ||
12142 | if (dwarf2_section_empty_p (index)) | |
12143 | return NULL; | |
12144 | dwarf2_read_section (objfile, index); | |
12145 | ||
12146 | index_ptr = index->buffer; | |
12147 | index_end = index_ptr + index->size; | |
12148 | ||
12149 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12150 | index_ptr += 4; |
12151 | if (version == 2) | |
12152 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12153 | else | |
12154 | nr_columns = 0; | |
12155 | index_ptr += 4; | |
80626a55 DE |
12156 | nr_units = read_4_bytes (dbfd, index_ptr); |
12157 | index_ptr += 4; | |
12158 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12159 | index_ptr += 4; | |
12160 | ||
73869dc2 | 12161 | if (version != 1 && version != 2) |
80626a55 | 12162 | { |
21aa081e | 12163 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12164 | " [in module %s]"), |
21aa081e | 12165 | pulongest (version), dwp_file->name); |
80626a55 DE |
12166 | } |
12167 | if (nr_slots != (nr_slots & -nr_slots)) | |
12168 | { | |
21aa081e | 12169 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12170 | " is not power of 2 [in module %s]"), |
21aa081e | 12171 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12172 | } |
12173 | ||
12174 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12175 | htab->version = version; |
12176 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12177 | htab->nr_units = nr_units; |
12178 | htab->nr_slots = nr_slots; | |
12179 | htab->hash_table = index_ptr; | |
12180 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12181 | |
12182 | /* Exit early if the table is empty. */ | |
12183 | if (nr_slots == 0 || nr_units == 0 | |
12184 | || (version == 2 && nr_columns == 0)) | |
12185 | { | |
12186 | /* All must be zero. */ | |
12187 | if (nr_slots != 0 || nr_units != 0 | |
12188 | || (version == 2 && nr_columns != 0)) | |
12189 | { | |
b98664d3 | 12190 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12191 | " all zero [in modules %s]"), |
12192 | dwp_file->name); | |
12193 | } | |
12194 | return htab; | |
12195 | } | |
12196 | ||
12197 | if (version == 1) | |
12198 | { | |
12199 | htab->section_pool.v1.indices = | |
12200 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12201 | /* It's harder to decide whether the section is too small in v1. | |
12202 | V1 is deprecated anyway so we punt. */ | |
12203 | } | |
12204 | else | |
12205 | { | |
12206 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12207 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 12208 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
12209 | /* Reverse map for error checking. */ |
12210 | int ids_seen[DW_SECT_MAX + 1]; | |
12211 | int i; | |
12212 | ||
12213 | if (nr_columns < 2) | |
12214 | { | |
12215 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12216 | " in section table [in module %s]"), | |
12217 | dwp_file->name); | |
12218 | } | |
12219 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12220 | { | |
12221 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12222 | " in section table [in module %s]"), | |
12223 | dwp_file->name); | |
12224 | } | |
04fd5eed GB |
12225 | memset (ids, 255, sizeof_ids); |
12226 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
12227 | for (i = 0; i < nr_columns; ++i) |
12228 | { | |
12229 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12230 | ||
12231 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12232 | { | |
12233 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12234 | " in section table [in module %s]"), | |
12235 | id, dwp_file->name); | |
12236 | } | |
12237 | if (ids_seen[id] != -1) | |
12238 | { | |
12239 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12240 | " id %d in section table [in module %s]"), | |
12241 | id, dwp_file->name); | |
12242 | } | |
12243 | ids_seen[id] = i; | |
12244 | ids[i] = id; | |
12245 | } | |
12246 | /* Must have exactly one info or types section. */ | |
12247 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12248 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12249 | != 1) | |
12250 | { | |
12251 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12252 | " DWO info/types section [in module %s]"), | |
12253 | dwp_file->name); | |
12254 | } | |
12255 | /* Must have an abbrev section. */ | |
12256 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12257 | { | |
12258 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12259 | " section [in module %s]"), | |
12260 | dwp_file->name); | |
12261 | } | |
12262 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12263 | htab->section_pool.v2.sizes = | |
12264 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12265 | * nr_units * nr_columns); | |
12266 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12267 | * nr_units * nr_columns)) | |
12268 | > index_end) | |
12269 | { | |
12270 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12271 | " [in module %s]"), | |
12272 | dwp_file->name); | |
12273 | } | |
12274 | } | |
80626a55 DE |
12275 | |
12276 | return htab; | |
12277 | } | |
12278 | ||
12279 | /* Update SECTIONS with the data from SECTP. | |
12280 | ||
12281 | This function is like the other "locate" section routines that are | |
12282 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12283 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12284 | |
12285 | The result is non-zero for success, or zero if an error was found. */ | |
12286 | ||
12287 | static int | |
73869dc2 DE |
12288 | locate_v1_virtual_dwo_sections (asection *sectp, |
12289 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12290 | { |
12291 | const struct dwop_section_names *names = &dwop_section_names; | |
12292 | ||
12293 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12294 | { | |
12295 | /* There can be only one. */ | |
049412e3 | 12296 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12297 | return 0; |
049412e3 | 12298 | sections->abbrev.s.section = sectp; |
fd361982 | 12299 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12300 | } |
12301 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12302 | || section_is_p (sectp->name, &names->types_dwo)) | |
12303 | { | |
12304 | /* There can be only one. */ | |
049412e3 | 12305 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12306 | return 0; |
049412e3 | 12307 | sections->info_or_types.s.section = sectp; |
fd361982 | 12308 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
12309 | } |
12310 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12311 | { | |
12312 | /* There can be only one. */ | |
049412e3 | 12313 | if (sections->line.s.section != NULL) |
80626a55 | 12314 | return 0; |
049412e3 | 12315 | sections->line.s.section = sectp; |
fd361982 | 12316 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12317 | } |
12318 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12319 | { | |
12320 | /* There can be only one. */ | |
049412e3 | 12321 | if (sections->loc.s.section != NULL) |
80626a55 | 12322 | return 0; |
049412e3 | 12323 | sections->loc.s.section = sectp; |
fd361982 | 12324 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12325 | } |
12326 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12327 | { | |
12328 | /* There can be only one. */ | |
049412e3 | 12329 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12330 | return 0; |
049412e3 | 12331 | sections->macinfo.s.section = sectp; |
fd361982 | 12332 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12333 | } |
12334 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12335 | { | |
12336 | /* There can be only one. */ | |
049412e3 | 12337 | if (sections->macro.s.section != NULL) |
80626a55 | 12338 | return 0; |
049412e3 | 12339 | sections->macro.s.section = sectp; |
fd361982 | 12340 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12341 | } |
12342 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12343 | { | |
12344 | /* There can be only one. */ | |
049412e3 | 12345 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12346 | return 0; |
049412e3 | 12347 | sections->str_offsets.s.section = sectp; |
fd361982 | 12348 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12349 | } |
12350 | else | |
12351 | { | |
12352 | /* No other kind of section is valid. */ | |
12353 | return 0; | |
12354 | } | |
12355 | ||
12356 | return 1; | |
12357 | } | |
12358 | ||
73869dc2 DE |
12359 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12360 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12361 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12362 | This is for DWP version 1 files. */ | |
80626a55 DE |
12363 | |
12364 | static struct dwo_unit * | |
ed2dc618 SM |
12365 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12366 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12367 | uint32_t unit_index, |
12368 | const char *comp_dir, | |
12369 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12370 | { |
12371 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12372 | const struct dwp_hash_table *dwp_htab = |
12373 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12374 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12375 | const char *kind = is_debug_types ? "TU" : "CU"; |
12376 | struct dwo_file *dwo_file; | |
12377 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12378 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12379 | void **dwo_file_slot; |
80626a55 DE |
12380 | int i; |
12381 | ||
73869dc2 DE |
12382 | gdb_assert (dwp_file->version == 1); |
12383 | ||
b4f54984 | 12384 | if (dwarf_read_debug) |
80626a55 | 12385 | { |
73869dc2 | 12386 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12387 | kind, |
73869dc2 | 12388 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12389 | dwp_file->name); |
12390 | } | |
12391 | ||
19ac8c2e | 12392 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12393 | Put a limit on the number of sections we look for so that bad data |
12394 | doesn't cause us to loop forever. */ | |
12395 | ||
73869dc2 | 12396 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12397 | (1 /* .debug_info or .debug_types */ \ |
12398 | + 1 /* .debug_abbrev */ \ | |
12399 | + 1 /* .debug_line */ \ | |
12400 | + 1 /* .debug_loc */ \ | |
12401 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12402 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12403 | + 1 /* trailing zero */) |
12404 | ||
12405 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12406 | |
73869dc2 | 12407 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12408 | { |
12409 | asection *sectp; | |
12410 | uint32_t section_nr = | |
12411 | read_4_bytes (dbfd, | |
73869dc2 DE |
12412 | dwp_htab->section_pool.v1.indices |
12413 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12414 | |
12415 | if (section_nr == 0) | |
12416 | break; | |
12417 | if (section_nr >= dwp_file->num_sections) | |
12418 | { | |
12419 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12420 | " [in module %s]"), | |
12421 | dwp_file->name); | |
12422 | } | |
12423 | ||
12424 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12425 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12426 | { |
12427 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12428 | " [in module %s]"), | |
12429 | dwp_file->name); | |
12430 | } | |
12431 | } | |
12432 | ||
12433 | if (i < 2 | |
a32a8923 DE |
12434 | || dwarf2_section_empty_p (§ions.info_or_types) |
12435 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12436 | { |
12437 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12438 | " [in module %s]"), | |
12439 | dwp_file->name); | |
12440 | } | |
73869dc2 | 12441 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12442 | { |
12443 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12444 | " [in module %s]"), | |
12445 | dwp_file->name); | |
12446 | } | |
12447 | ||
12448 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12449 | have dwo_unit "live" in that. At least for now. | |
12450 | ||
12451 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12452 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12453 | file, we can combine them back into a virtual DWO file to save space |
12454 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12455 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12456 | ||
791afaa2 TT |
12457 | std::string virtual_dwo_name = |
12458 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12459 | get_section_id (§ions.abbrev), | |
12460 | get_section_id (§ions.line), | |
12461 | get_section_id (§ions.loc), | |
12462 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12463 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12464 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12465 | virtual_dwo_name.c_str (), | |
12466 | comp_dir); | |
80626a55 DE |
12467 | /* Create one if necessary. */ |
12468 | if (*dwo_file_slot == NULL) | |
12469 | { | |
b4f54984 | 12470 | if (dwarf_read_debug) |
80626a55 DE |
12471 | { |
12472 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12473 | virtual_dwo_name.c_str ()); |
80626a55 | 12474 | } |
51ac9db5 | 12475 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12476 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12477 | virtual_dwo_name); | |
0ac5b59e | 12478 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12479 | dwo_file->sections.abbrev = sections.abbrev; |
12480 | dwo_file->sections.line = sections.line; | |
12481 | dwo_file->sections.loc = sections.loc; | |
12482 | dwo_file->sections.macinfo = sections.macinfo; | |
12483 | dwo_file->sections.macro = sections.macro; | |
12484 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12485 | /* The "str" section is global to the entire DWP file. */ | |
12486 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12487 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12488 | there's no need to record it in dwo_file. |
12489 | Also, we can't simply record type sections in dwo_file because | |
12490 | we record a pointer into the vector in dwo_unit. As we collect more | |
12491 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12492 | for it, invalidating all copies of pointers into the previous |
12493 | contents. */ | |
80626a55 DE |
12494 | *dwo_file_slot = dwo_file; |
12495 | } | |
12496 | else | |
12497 | { | |
b4f54984 | 12498 | if (dwarf_read_debug) |
80626a55 DE |
12499 | { |
12500 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12501 | virtual_dwo_name.c_str ()); |
80626a55 | 12502 | } |
9a3c8263 | 12503 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12504 | } |
80626a55 DE |
12505 | |
12506 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12507 | dwo_unit->dwo_file = dwo_file; | |
12508 | dwo_unit->signature = signature; | |
8d749320 SM |
12509 | dwo_unit->section = |
12510 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12511 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12512 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12513 | |
12514 | return dwo_unit; | |
12515 | } | |
12516 | ||
73869dc2 DE |
12517 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12518 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12519 | piece within that section used by a TU/CU, return a virtual section | |
12520 | of just that piece. */ | |
12521 | ||
12522 | static struct dwarf2_section_info | |
ed2dc618 SM |
12523 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12524 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12525 | bfd_size_type offset, bfd_size_type size) |
12526 | { | |
12527 | struct dwarf2_section_info result; | |
12528 | asection *sectp; | |
12529 | ||
12530 | gdb_assert (section != NULL); | |
12531 | gdb_assert (!section->is_virtual); | |
12532 | ||
12533 | memset (&result, 0, sizeof (result)); | |
12534 | result.s.containing_section = section; | |
dc4ccb6f | 12535 | result.is_virtual = true; |
73869dc2 DE |
12536 | |
12537 | if (size == 0) | |
12538 | return result; | |
12539 | ||
12540 | sectp = get_section_bfd_section (section); | |
12541 | ||
12542 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12543 | bounds of the real section. This is a pretty-rare event, so just | |
12544 | flag an error (easier) instead of a warning and trying to cope. */ | |
12545 | if (sectp == NULL | |
fd361982 | 12546 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12547 | { |
73869dc2 DE |
12548 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12549 | " in section %s [in module %s]"), | |
fd361982 | 12550 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
12551 | objfile_name (dwarf2_per_objfile->objfile)); |
12552 | } | |
12553 | ||
12554 | result.virtual_offset = offset; | |
12555 | result.size = size; | |
12556 | return result; | |
12557 | } | |
12558 | ||
12559 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12560 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12561 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12562 | This is for DWP version 2 files. */ | |
12563 | ||
12564 | static struct dwo_unit * | |
ed2dc618 SM |
12565 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12566 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12567 | uint32_t unit_index, |
12568 | const char *comp_dir, | |
12569 | ULONGEST signature, int is_debug_types) | |
12570 | { | |
12571 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12572 | const struct dwp_hash_table *dwp_htab = | |
12573 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12574 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12575 | const char *kind = is_debug_types ? "TU" : "CU"; |
12576 | struct dwo_file *dwo_file; | |
12577 | struct dwo_unit *dwo_unit; | |
12578 | struct virtual_v2_dwo_sections sections; | |
12579 | void **dwo_file_slot; | |
73869dc2 DE |
12580 | int i; |
12581 | ||
12582 | gdb_assert (dwp_file->version == 2); | |
12583 | ||
b4f54984 | 12584 | if (dwarf_read_debug) |
73869dc2 DE |
12585 | { |
12586 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12587 | kind, | |
12588 | pulongest (unit_index), hex_string (signature), | |
12589 | dwp_file->name); | |
12590 | } | |
12591 | ||
12592 | /* Fetch the section offsets of this DWO unit. */ | |
12593 | ||
12594 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12595 | |
12596 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12597 | { | |
12598 | uint32_t offset = read_4_bytes (dbfd, | |
12599 | dwp_htab->section_pool.v2.offsets | |
12600 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12601 | + i) | |
12602 | * sizeof (uint32_t))); | |
12603 | uint32_t size = read_4_bytes (dbfd, | |
12604 | dwp_htab->section_pool.v2.sizes | |
12605 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12606 | + i) | |
12607 | * sizeof (uint32_t))); | |
12608 | ||
12609 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12610 | { | |
12611 | case DW_SECT_INFO: | |
12612 | case DW_SECT_TYPES: | |
12613 | sections.info_or_types_offset = offset; | |
12614 | sections.info_or_types_size = size; | |
12615 | break; | |
12616 | case DW_SECT_ABBREV: | |
12617 | sections.abbrev_offset = offset; | |
12618 | sections.abbrev_size = size; | |
12619 | break; | |
12620 | case DW_SECT_LINE: | |
12621 | sections.line_offset = offset; | |
12622 | sections.line_size = size; | |
12623 | break; | |
12624 | case DW_SECT_LOC: | |
12625 | sections.loc_offset = offset; | |
12626 | sections.loc_size = size; | |
12627 | break; | |
12628 | case DW_SECT_STR_OFFSETS: | |
12629 | sections.str_offsets_offset = offset; | |
12630 | sections.str_offsets_size = size; | |
12631 | break; | |
12632 | case DW_SECT_MACINFO: | |
12633 | sections.macinfo_offset = offset; | |
12634 | sections.macinfo_size = size; | |
12635 | break; | |
12636 | case DW_SECT_MACRO: | |
12637 | sections.macro_offset = offset; | |
12638 | sections.macro_size = size; | |
12639 | break; | |
12640 | } | |
12641 | } | |
12642 | ||
12643 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12644 | have dwo_unit "live" in that. At least for now. | |
12645 | ||
12646 | The DWP file can be made up of a random collection of CUs and TUs. | |
12647 | However, for each CU + set of TUs that came from the same original DWO | |
12648 | file, we can combine them back into a virtual DWO file to save space | |
12649 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12650 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12651 | ||
791afaa2 TT |
12652 | std::string virtual_dwo_name = |
12653 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12654 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12655 | (long) (sections.line_size ? sections.line_offset : 0), | |
12656 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12657 | (long) (sections.str_offsets_size | |
12658 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12659 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12660 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12661 | virtual_dwo_name.c_str (), | |
12662 | comp_dir); | |
73869dc2 DE |
12663 | /* Create one if necessary. */ |
12664 | if (*dwo_file_slot == NULL) | |
12665 | { | |
b4f54984 | 12666 | if (dwarf_read_debug) |
73869dc2 DE |
12667 | { |
12668 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12669 | virtual_dwo_name.c_str ()); |
73869dc2 | 12670 | } |
51ac9db5 | 12671 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12672 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12673 | virtual_dwo_name); | |
73869dc2 DE |
12674 | dwo_file->comp_dir = comp_dir; |
12675 | dwo_file->sections.abbrev = | |
ed2dc618 | 12676 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12677 | sections.abbrev_offset, sections.abbrev_size); |
12678 | dwo_file->sections.line = | |
ed2dc618 | 12679 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12680 | sections.line_offset, sections.line_size); |
12681 | dwo_file->sections.loc = | |
ed2dc618 | 12682 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12683 | sections.loc_offset, sections.loc_size); |
12684 | dwo_file->sections.macinfo = | |
ed2dc618 | 12685 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12686 | sections.macinfo_offset, sections.macinfo_size); |
12687 | dwo_file->sections.macro = | |
ed2dc618 | 12688 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12689 | sections.macro_offset, sections.macro_size); |
12690 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12691 | create_dwp_v2_section (dwarf2_per_objfile, |
12692 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12693 | sections.str_offsets_offset, |
12694 | sections.str_offsets_size); | |
12695 | /* The "str" section is global to the entire DWP file. */ | |
12696 | dwo_file->sections.str = dwp_file->sections.str; | |
12697 | /* The info or types section is assigned below to dwo_unit, | |
12698 | there's no need to record it in dwo_file. | |
12699 | Also, we can't simply record type sections in dwo_file because | |
12700 | we record a pointer into the vector in dwo_unit. As we collect more | |
12701 | types we'll grow the vector and eventually have to reallocate space | |
12702 | for it, invalidating all copies of pointers into the previous | |
12703 | contents. */ | |
12704 | *dwo_file_slot = dwo_file; | |
12705 | } | |
12706 | else | |
12707 | { | |
b4f54984 | 12708 | if (dwarf_read_debug) |
73869dc2 DE |
12709 | { |
12710 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12711 | virtual_dwo_name.c_str ()); |
73869dc2 | 12712 | } |
9a3c8263 | 12713 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12714 | } |
73869dc2 DE |
12715 | |
12716 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12717 | dwo_unit->dwo_file = dwo_file; | |
12718 | dwo_unit->signature = signature; | |
8d749320 SM |
12719 | dwo_unit->section = |
12720 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12721 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12722 | is_debug_types | |
73869dc2 DE |
12723 | ? &dwp_file->sections.types |
12724 | : &dwp_file->sections.info, | |
12725 | sections.info_or_types_offset, | |
12726 | sections.info_or_types_size); | |
12727 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12728 | ||
12729 | return dwo_unit; | |
12730 | } | |
12731 | ||
57d63ce2 DE |
12732 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12733 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12734 | |
12735 | static struct dwo_unit * | |
ed2dc618 SM |
12736 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12737 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12738 | ULONGEST signature, int is_debug_types) |
80626a55 | 12739 | { |
57d63ce2 DE |
12740 | const struct dwp_hash_table *dwp_htab = |
12741 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12742 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12743 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12744 | uint32_t hash = signature & mask; |
12745 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12746 | unsigned int i; | |
12747 | void **slot; | |
870f88f7 | 12748 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12749 | |
12750 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12751 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12752 | slot = htab_find_slot (is_debug_types |
12753 | ? dwp_file->loaded_tus | |
12754 | : dwp_file->loaded_cus, | |
12755 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12756 | |
12757 | if (*slot != NULL) | |
9a3c8263 | 12758 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12759 | |
12760 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12761 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12762 | { |
12763 | ULONGEST signature_in_table; | |
12764 | ||
12765 | signature_in_table = | |
57d63ce2 | 12766 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12767 | if (signature_in_table == signature) |
12768 | { | |
57d63ce2 DE |
12769 | uint32_t unit_index = |
12770 | read_4_bytes (dbfd, | |
12771 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12772 | |
73869dc2 DE |
12773 | if (dwp_file->version == 1) |
12774 | { | |
ed2dc618 SM |
12775 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12776 | dwp_file, unit_index, | |
73869dc2 DE |
12777 | comp_dir, signature, |
12778 | is_debug_types); | |
12779 | } | |
12780 | else | |
12781 | { | |
ed2dc618 SM |
12782 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12783 | dwp_file, unit_index, | |
73869dc2 DE |
12784 | comp_dir, signature, |
12785 | is_debug_types); | |
12786 | } | |
9a3c8263 | 12787 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12788 | } |
12789 | if (signature_in_table == 0) | |
12790 | return NULL; | |
12791 | hash = (hash + hash2) & mask; | |
12792 | } | |
12793 | ||
12794 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12795 | " [in module %s]"), | |
12796 | dwp_file->name); | |
12797 | } | |
12798 | ||
ab5088bf | 12799 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12800 | Open the file specified by FILE_NAME and hand it off to BFD for |
12801 | preliminary analysis. Return a newly initialized bfd *, which | |
12802 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12803 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12804 | SEARCH_CWD is true if the current directory is to be searched. |
12805 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12806 | If successful, the file is added to the bfd include table of the |
12807 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12808 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12809 | NOTE: This function is derived from symfile_bfd_open. */ |
12810 | ||
192b62ce | 12811 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12812 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12813 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12814 | { |
24b9144d | 12815 | int desc; |
9c02c129 DE |
12816 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12817 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12818 | to debug_file_directory. */ | |
e0cc99a6 | 12819 | const char *search_path; |
9c02c129 DE |
12820 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12821 | ||
e0cc99a6 | 12822 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12823 | if (search_cwd) |
12824 | { | |
12825 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12826 | { |
12827 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12828 | debug_file_directory, | |
12829 | (char *) NULL)); | |
12830 | search_path = search_path_holder.get (); | |
12831 | } | |
6ac97d4c | 12832 | else |
e0cc99a6 | 12833 | search_path = "."; |
6ac97d4c | 12834 | } |
9c02c129 | 12835 | else |
e0cc99a6 | 12836 | search_path = debug_file_directory; |
3019eac3 | 12837 | |
24b9144d | 12838 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12839 | if (is_dwp) |
12840 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12841 | |
12842 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12843 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12844 | O_RDONLY | O_BINARY, &absolute_name); |
12845 | if (desc < 0) | |
12846 | return NULL; | |
12847 | ||
e0cc99a6 TT |
12848 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12849 | gnutarget, desc)); | |
9c02c129 DE |
12850 | if (sym_bfd == NULL) |
12851 | return NULL; | |
192b62ce | 12852 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12853 | |
192b62ce TT |
12854 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12855 | return NULL; | |
3019eac3 | 12856 | |
13aaf454 DE |
12857 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12858 | This is important because things like demangled_names_hash lives in the | |
12859 | objfile's per_bfd space and may have references to things like symbol | |
12860 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12861 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12862 | |
3019eac3 DE |
12863 | return sym_bfd; |
12864 | } | |
12865 | ||
ab5088bf | 12866 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12867 | COMP_DIR is the DW_AT_comp_dir attribute. |
12868 | The result is the bfd handle of the file. | |
12869 | If there is a problem finding or opening the file, return NULL. | |
12870 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12871 | same as symfile_bfd_open. */ | |
12872 | ||
192b62ce | 12873 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12874 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12875 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12876 | { |
80626a55 | 12877 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12878 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12879 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12880 | |
12881 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12882 | ||
12883 | if (comp_dir != NULL) | |
12884 | { | |
43816ebc TT |
12885 | gdb::unique_xmalloc_ptr<char> path_to_try |
12886 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12887 | |
12888 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12889 | search path, which seems useful. */ | |
ed2dc618 | 12890 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12891 | path_to_try.get (), |
ed2dc618 | 12892 | 0 /*is_dwp*/, |
192b62ce | 12893 | 1 /*search_cwd*/)); |
3019eac3 DE |
12894 | if (abfd != NULL) |
12895 | return abfd; | |
12896 | } | |
12897 | ||
12898 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12899 | is a list of paths. */ | |
12900 | ||
12901 | if (*debug_file_directory == '\0') | |
12902 | return NULL; | |
12903 | ||
ed2dc618 SM |
12904 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12905 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12906 | } |
12907 | ||
80626a55 DE |
12908 | /* This function is mapped across the sections and remembers the offset and |
12909 | size of each of the DWO debugging sections we are interested in. */ | |
12910 | ||
12911 | static void | |
12912 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12913 | { | |
9a3c8263 | 12914 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12915 | const struct dwop_section_names *names = &dwop_section_names; |
12916 | ||
12917 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12918 | { | |
049412e3 | 12919 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12920 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12921 | } |
12922 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12923 | { | |
049412e3 | 12924 | dwo_sections->info.s.section = sectp; |
fd361982 | 12925 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12926 | } |
12927 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12928 | { | |
049412e3 | 12929 | dwo_sections->line.s.section = sectp; |
fd361982 | 12930 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12931 | } |
12932 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12933 | { | |
049412e3 | 12934 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12935 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12936 | } |
12937 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12938 | { | |
049412e3 | 12939 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12940 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12941 | } |
12942 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12943 | { | |
049412e3 | 12944 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12945 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12946 | } |
12947 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12948 | { | |
049412e3 | 12949 | dwo_sections->str.s.section = sectp; |
fd361982 | 12950 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12951 | } |
12952 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12953 | { | |
049412e3 | 12954 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12955 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12956 | } |
12957 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12958 | { | |
12959 | struct dwarf2_section_info type_section; | |
12960 | ||
12961 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12962 | type_section.s.section = sectp; |
fd361982 | 12963 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12964 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12965 | } |
12966 | } | |
12967 | ||
ab5088bf | 12968 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12969 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12970 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12971 | |
12972 | static struct dwo_file * | |
0ac5b59e DE |
12973 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12974 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12975 | { |
ed2dc618 | 12976 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12977 | |
fb1eb2f9 | 12978 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12979 | if (dbfd == NULL) |
12980 | { | |
b4f54984 | 12981 | if (dwarf_read_debug) |
80626a55 DE |
12982 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12983 | return NULL; | |
12984 | } | |
263db9a1 | 12985 | |
51ac9db5 | 12986 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12987 | dwo_file->dwo_name = dwo_name; |
12988 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12989 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12990 | |
fb1eb2f9 | 12991 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12992 | &dwo_file->sections); |
3019eac3 | 12993 | |
18a8505e AT |
12994 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12995 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12996 | |
263db9a1 | 12997 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12998 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12999 | |
b4f54984 | 13000 | if (dwarf_read_debug) |
80626a55 DE |
13001 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13002 | ||
263db9a1 | 13003 | return dwo_file.release (); |
3019eac3 DE |
13004 | } |
13005 | ||
80626a55 | 13006 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13007 | size of each of the DWP debugging sections common to version 1 and 2 that |
13008 | we are interested in. */ | |
3019eac3 | 13009 | |
80626a55 | 13010 | static void |
73869dc2 DE |
13011 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13012 | void *dwp_file_ptr) | |
3019eac3 | 13013 | { |
9a3c8263 | 13014 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13015 | const struct dwop_section_names *names = &dwop_section_names; |
13016 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13017 | |
80626a55 | 13018 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13019 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13020 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13021 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13022 | |
80626a55 DE |
13023 | /* Look for specific sections that we need. */ |
13024 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13025 | { | |
049412e3 | 13026 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 13027 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
13028 | } |
13029 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13030 | { | |
049412e3 | 13031 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 13032 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13033 | } |
13034 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13035 | { | |
049412e3 | 13036 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 13037 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13038 | } |
13039 | } | |
3019eac3 | 13040 | |
73869dc2 DE |
13041 | /* This function is mapped across the sections and remembers the offset and |
13042 | size of each of the DWP version 2 debugging sections that we are interested | |
13043 | in. This is split into a separate function because we don't know if we | |
13044 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13045 | ||
13046 | static void | |
13047 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13048 | { | |
9a3c8263 | 13049 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13050 | const struct dwop_section_names *names = &dwop_section_names; |
13051 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13052 | ||
13053 | /* Record the ELF section number for later lookup: this is what the | |
13054 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13055 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13056 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13057 | ||
13058 | /* Look for specific sections that we need. */ | |
13059 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13060 | { | |
049412e3 | 13061 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 13062 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
13063 | } |
13064 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13065 | { | |
049412e3 | 13066 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 13067 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
13068 | } |
13069 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13070 | { | |
049412e3 | 13071 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 13072 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
13073 | } |
13074 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13075 | { | |
049412e3 | 13076 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 13077 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
13078 | } |
13079 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13080 | { | |
049412e3 | 13081 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13082 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
13083 | } |
13084 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13085 | { | |
049412e3 | 13086 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13087 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
13088 | } |
13089 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13090 | { | |
049412e3 | 13091 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13092 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
13093 | } |
13094 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13095 | { | |
049412e3 | 13096 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13097 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13098 | } |
13099 | } | |
13100 | ||
80626a55 | 13101 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13102 | |
80626a55 DE |
13103 | static hashval_t |
13104 | hash_dwp_loaded_cutus (const void *item) | |
13105 | { | |
9a3c8263 | 13106 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13107 | |
80626a55 DE |
13108 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13109 | return dwo_unit->signature; | |
3019eac3 DE |
13110 | } |
13111 | ||
80626a55 | 13112 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13113 | |
80626a55 DE |
13114 | static int |
13115 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13116 | { |
9a3c8263 SM |
13117 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13118 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13119 | |
80626a55 DE |
13120 | return dua->signature == dub->signature; |
13121 | } | |
3019eac3 | 13122 | |
80626a55 | 13123 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13124 | |
80626a55 DE |
13125 | static htab_t |
13126 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13127 | { | |
13128 | return htab_create_alloc_ex (3, | |
13129 | hash_dwp_loaded_cutus, | |
13130 | eq_dwp_loaded_cutus, | |
13131 | NULL, | |
13132 | &objfile->objfile_obstack, | |
13133 | hashtab_obstack_allocate, | |
13134 | dummy_obstack_deallocate); | |
13135 | } | |
3019eac3 | 13136 | |
ab5088bf DE |
13137 | /* Try to open DWP file FILE_NAME. |
13138 | The result is the bfd handle of the file. | |
13139 | If there is a problem finding or opening the file, return NULL. | |
13140 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13141 | same as symfile_bfd_open. */ | |
13142 | ||
192b62ce | 13143 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13144 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13145 | const char *file_name) | |
ab5088bf | 13146 | { |
ed2dc618 SM |
13147 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13148 | 1 /*is_dwp*/, | |
192b62ce | 13149 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13150 | if (abfd != NULL) |
13151 | return abfd; | |
13152 | ||
13153 | /* Work around upstream bug 15652. | |
13154 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13155 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13156 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13157 | of the executable's path may have discarded the needed info. | |
13158 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13159 | .gnu_debuglink, but that doesn't exist yet.] | |
13160 | Strip the directory from FILE_NAME and search again. */ | |
13161 | if (*debug_file_directory != '\0') | |
13162 | { | |
13163 | /* Don't implicitly search the current directory here. | |
13164 | If the user wants to search "." to handle this case, | |
13165 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13166 | return try_open_dwop_file (dwarf2_per_objfile, |
13167 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13168 | 0 /*search_cwd*/); |
13169 | } | |
13170 | ||
13171 | return NULL; | |
ab5088bf DE |
13172 | } |
13173 | ||
80626a55 DE |
13174 | /* Initialize the use of the DWP file for the current objfile. |
13175 | By convention the name of the DWP file is ${objfile}.dwp. | |
13176 | The result is NULL if it can't be found. */ | |
a766d390 | 13177 | |
400174b1 | 13178 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13179 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13180 | { |
13181 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13182 | |
82bf32bc JK |
13183 | /* Try to find first .dwp for the binary file before any symbolic links |
13184 | resolving. */ | |
6c447423 DE |
13185 | |
13186 | /* If the objfile is a debug file, find the name of the real binary | |
13187 | file and get the name of dwp file from there. */ | |
d721ba37 | 13188 | std::string dwp_name; |
6c447423 DE |
13189 | if (objfile->separate_debug_objfile_backlink != NULL) |
13190 | { | |
13191 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13192 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13193 | |
d721ba37 | 13194 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13195 | } |
13196 | else | |
d721ba37 PA |
13197 | dwp_name = objfile->original_name; |
13198 | ||
13199 | dwp_name += ".dwp"; | |
80626a55 | 13200 | |
ed2dc618 | 13201 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13202 | if (dbfd == NULL |
13203 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13204 | { | |
13205 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13206 | dwp_name = objfile_name (objfile); |
13207 | dwp_name += ".dwp"; | |
ed2dc618 | 13208 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13209 | } |
13210 | ||
80626a55 DE |
13211 | if (dbfd == NULL) |
13212 | { | |
b4f54984 | 13213 | if (dwarf_read_debug) |
d721ba37 | 13214 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13215 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13216 | } |
400174b1 TT |
13217 | |
13218 | const char *name = bfd_get_filename (dbfd.get ()); | |
13219 | std::unique_ptr<struct dwp_file> dwp_file | |
13220 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13221 | |
0a0f4c01 | 13222 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
13223 | dwp_file->elf_sections = |
13224 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13225 | dwp_file->num_sections, asection *); | |
13226 | ||
400174b1 TT |
13227 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13228 | dwarf2_locate_common_dwp_sections, | |
13229 | dwp_file.get ()); | |
80626a55 | 13230 | |
400174b1 TT |
13231 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13232 | 0); | |
80626a55 | 13233 | |
400174b1 TT |
13234 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13235 | 1); | |
80626a55 | 13236 | |
73869dc2 | 13237 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13238 | if (dwp_file->cus && dwp_file->tus |
13239 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13240 | { |
13241 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13242 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13243 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13244 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13245 | " TU version %s [in DWP file %s]"), | |
13246 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13247 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13248 | } |
08302ed2 DE |
13249 | |
13250 | if (dwp_file->cus) | |
13251 | dwp_file->version = dwp_file->cus->version; | |
13252 | else if (dwp_file->tus) | |
13253 | dwp_file->version = dwp_file->tus->version; | |
13254 | else | |
13255 | dwp_file->version = 2; | |
73869dc2 DE |
13256 | |
13257 | if (dwp_file->version == 2) | |
400174b1 TT |
13258 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13259 | dwarf2_locate_v2_dwp_sections, | |
13260 | dwp_file.get ()); | |
73869dc2 | 13261 | |
19ac8c2e DE |
13262 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13263 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13264 | |
b4f54984 | 13265 | if (dwarf_read_debug) |
80626a55 DE |
13266 | { |
13267 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13268 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13269 | " %s CUs, %s TUs\n", |
13270 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13271 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13272 | } |
13273 | ||
13274 | return dwp_file; | |
3019eac3 | 13275 | } |
c906108c | 13276 | |
ab5088bf DE |
13277 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13278 | ||
13279 | static struct dwp_file * | |
ed2dc618 | 13280 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13281 | { |
13282 | if (! dwarf2_per_objfile->dwp_checked) | |
13283 | { | |
ed2dc618 SM |
13284 | dwarf2_per_objfile->dwp_file |
13285 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13286 | dwarf2_per_objfile->dwp_checked = 1; |
13287 | } | |
400174b1 | 13288 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13289 | } |
13290 | ||
80626a55 DE |
13291 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13292 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13293 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13294 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13295 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13296 | ||
13297 | This is called, for example, when wanting to read a variable with a | |
13298 | complex location. Therefore we don't want to do file i/o for every call. | |
13299 | Therefore we don't want to look for a DWO file on every call. | |
13300 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13301 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13302 | for a DWO file. | |
13303 | ||
1c658ad5 | 13304 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13305 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13306 | |
3019eac3 | 13307 | static struct dwo_unit * |
80626a55 DE |
13308 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13309 | const char *dwo_name, const char *comp_dir, | |
13310 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13311 | { |
ed2dc618 | 13312 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13313 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13314 | const char *kind = is_debug_types ? "TU" : "CU"; |
13315 | void **dwo_file_slot; | |
3019eac3 | 13316 | struct dwo_file *dwo_file; |
80626a55 | 13317 | struct dwp_file *dwp_file; |
cb1df416 | 13318 | |
6a506a2d DE |
13319 | /* First see if there's a DWP file. |
13320 | If we have a DWP file but didn't find the DWO inside it, don't | |
13321 | look for the original DWO file. It makes gdb behave differently | |
13322 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13323 | |
ed2dc618 | 13324 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13325 | if (dwp_file != NULL) |
cf2c3c16 | 13326 | { |
80626a55 DE |
13327 | const struct dwp_hash_table *dwp_htab = |
13328 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13329 | ||
13330 | if (dwp_htab != NULL) | |
13331 | { | |
13332 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13333 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13334 | signature, is_debug_types); |
80626a55 DE |
13335 | |
13336 | if (dwo_cutu != NULL) | |
13337 | { | |
b4f54984 | 13338 | if (dwarf_read_debug) |
80626a55 DE |
13339 | { |
13340 | fprintf_unfiltered (gdb_stdlog, | |
13341 | "Virtual DWO %s %s found: @%s\n", | |
13342 | kind, hex_string (signature), | |
13343 | host_address_to_string (dwo_cutu)); | |
13344 | } | |
13345 | return dwo_cutu; | |
13346 | } | |
13347 | } | |
13348 | } | |
6a506a2d | 13349 | else |
80626a55 | 13350 | { |
6a506a2d | 13351 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13352 | |
ed2dc618 SM |
13353 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13354 | dwo_name, comp_dir); | |
6a506a2d | 13355 | if (*dwo_file_slot == NULL) |
80626a55 | 13356 | { |
6a506a2d DE |
13357 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13358 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13359 | } |
6a506a2d | 13360 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13361 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13362 | |
6a506a2d | 13363 | if (dwo_file != NULL) |
19c3d4c9 | 13364 | { |
6a506a2d DE |
13365 | struct dwo_unit *dwo_cutu = NULL; |
13366 | ||
13367 | if (is_debug_types && dwo_file->tus) | |
13368 | { | |
13369 | struct dwo_unit find_dwo_cutu; | |
13370 | ||
13371 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13372 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13373 | dwo_cutu |
13374 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13375 | } |
33c5cd75 | 13376 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13377 | { |
33c5cd75 DB |
13378 | struct dwo_unit find_dwo_cutu; |
13379 | ||
13380 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13381 | find_dwo_cutu.signature = signature; | |
13382 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13383 | &find_dwo_cutu); | |
6a506a2d DE |
13384 | } |
13385 | ||
13386 | if (dwo_cutu != NULL) | |
13387 | { | |
b4f54984 | 13388 | if (dwarf_read_debug) |
6a506a2d DE |
13389 | { |
13390 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13391 | kind, dwo_name, hex_string (signature), | |
13392 | host_address_to_string (dwo_cutu)); | |
13393 | } | |
13394 | return dwo_cutu; | |
80626a55 DE |
13395 | } |
13396 | } | |
2e276125 | 13397 | } |
9cdd5dbd | 13398 | |
80626a55 DE |
13399 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13400 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13401 | correctly to find the file. */ | |
13402 | ||
b4f54984 | 13403 | if (dwarf_read_debug) |
80626a55 DE |
13404 | { |
13405 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13406 | kind, dwo_name, hex_string (signature)); | |
13407 | } | |
3019eac3 | 13408 | |
6656a72d DE |
13409 | /* This is a warning and not a complaint because it can be caused by |
13410 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13411 | { |
13412 | /* Print the name of the DWP file if we looked there, helps the user | |
13413 | better diagnose the problem. */ | |
791afaa2 | 13414 | std::string dwp_text; |
43942612 DE |
13415 | |
13416 | if (dwp_file != NULL) | |
791afaa2 TT |
13417 | dwp_text = string_printf (" [in DWP file %s]", |
13418 | lbasename (dwp_file->name)); | |
43942612 | 13419 | |
9d8780f0 | 13420 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13421 | " [in module %s]"), |
13422 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13423 | dwp_text.c_str (), |
43942612 | 13424 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13425 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13426 | } |
3019eac3 | 13427 | return NULL; |
5fb290d7 DJ |
13428 | } |
13429 | ||
80626a55 DE |
13430 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13431 | See lookup_dwo_cutu_unit for details. */ | |
13432 | ||
13433 | static struct dwo_unit * | |
13434 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13435 | const char *dwo_name, const char *comp_dir, | |
13436 | ULONGEST signature) | |
13437 | { | |
13438 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13439 | } | |
13440 | ||
13441 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13442 | See lookup_dwo_cutu_unit for details. */ | |
13443 | ||
13444 | static struct dwo_unit * | |
13445 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13446 | const char *dwo_name, const char *comp_dir) | |
13447 | { | |
13448 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13449 | } | |
13450 | ||
89e63ee4 DE |
13451 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13452 | ||
13453 | static int | |
13454 | queue_and_load_dwo_tu (void **slot, void *info) | |
13455 | { | |
13456 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13457 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13458 | ULONGEST signature = dwo_unit->signature; | |
13459 | struct signatured_type *sig_type = | |
13460 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13461 | ||
13462 | if (sig_type != NULL) | |
13463 | { | |
13464 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13465 | ||
13466 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13467 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13468 | while processing PER_CU. */ | |
13469 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13470 | load_full_type_unit (sig_cu); | |
ae640021 | 13471 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
13472 | } |
13473 | ||
13474 | return 1; | |
13475 | } | |
13476 | ||
13477 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13478 | The DWO may have the only definition of the type, though it may not be | |
13479 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13480 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13481 | ||
13482 | static void | |
13483 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13484 | { | |
13485 | struct dwo_unit *dwo_unit; | |
13486 | struct dwo_file *dwo_file; | |
13487 | ||
13488 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13489 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13490 | gdb_assert (per_cu->cu != NULL); |
13491 | ||
13492 | dwo_unit = per_cu->cu->dwo_unit; | |
13493 | gdb_assert (dwo_unit != NULL); | |
13494 | ||
13495 | dwo_file = dwo_unit->dwo_file; | |
13496 | if (dwo_file->tus != NULL) | |
13497 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13498 | } | |
13499 | ||
3019eac3 | 13500 | /* Read in various DIEs. */ |
348e048f | 13501 | |
d389af10 | 13502 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13503 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13504 | already referenced by DW_AT_abstract_origin from the children of the | |
13505 | current DIE. */ | |
d389af10 JK |
13506 | |
13507 | static void | |
13508 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13509 | { | |
13510 | struct die_info *child_die; | |
791afaa2 | 13511 | sect_offset *offsetp; |
d389af10 JK |
13512 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13513 | struct die_info *origin_die; | |
13514 | /* Iterator of the ORIGIN_DIE children. */ | |
13515 | struct die_info *origin_child_die; | |
d389af10 | 13516 | struct attribute *attr; |
cd02d79d PA |
13517 | struct dwarf2_cu *origin_cu; |
13518 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13519 | |
13520 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13521 | if (!attr) | |
13522 | return; | |
13523 | ||
cd02d79d PA |
13524 | /* Note that following die references may follow to a die in a |
13525 | different cu. */ | |
13526 | ||
13527 | origin_cu = cu; | |
13528 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13529 | ||
13530 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13531 | symbols in. */ | |
13532 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13533 | origin_cu->list_in_scope = cu->list_in_scope; | |
13534 | ||
edb3359d DJ |
13535 | if (die->tag != origin_die->tag |
13536 | && !(die->tag == DW_TAG_inlined_subroutine | |
13537 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13538 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13539 | sect_offset_str (die->sect_off), |
13540 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13541 | |
791afaa2 | 13542 | std::vector<sect_offset> offsets; |
d389af10 | 13543 | |
3ea89b92 PMR |
13544 | for (child_die = die->child; |
13545 | child_die && child_die->tag; | |
13546 | child_die = sibling_die (child_die)) | |
13547 | { | |
13548 | struct die_info *child_origin_die; | |
13549 | struct dwarf2_cu *child_origin_cu; | |
13550 | ||
13551 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13552 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13553 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13554 | present in the abstract instance but not referenced in the concrete | |
13555 | one. */ | |
216f72a1 JK |
13556 | if (child_die->tag == DW_TAG_call_site |
13557 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13558 | continue; |
13559 | ||
c38f313d DJ |
13560 | /* For each CHILD_DIE, find the corresponding child of |
13561 | ORIGIN_DIE. If there is more than one layer of | |
13562 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13563 | but GCC versions at least through 4.4 generate this (GCC PR | |
13564 | 40573). */ | |
3ea89b92 PMR |
13565 | child_origin_die = child_die; |
13566 | child_origin_cu = cu; | |
c38f313d DJ |
13567 | while (1) |
13568 | { | |
cd02d79d PA |
13569 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13570 | child_origin_cu); | |
c38f313d DJ |
13571 | if (attr == NULL) |
13572 | break; | |
cd02d79d PA |
13573 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13574 | &child_origin_cu); | |
c38f313d DJ |
13575 | } |
13576 | ||
d389af10 JK |
13577 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13578 | counterpart may exist. */ | |
c38f313d | 13579 | if (child_origin_die != child_die) |
d389af10 | 13580 | { |
edb3359d DJ |
13581 | if (child_die->tag != child_origin_die->tag |
13582 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13583 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13584 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13585 | "different tags"), |
9d8780f0 SM |
13586 | sect_offset_str (child_die->sect_off), |
13587 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13588 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13589 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13590 | "different parents"), |
9d8780f0 SM |
13591 | sect_offset_str (child_die->sect_off), |
13592 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13593 | else |
791afaa2 | 13594 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13595 | } |
d389af10 | 13596 | } |
791afaa2 TT |
13597 | std::sort (offsets.begin (), offsets.end ()); |
13598 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13599 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13600 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13601 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13602 | "to DIE %s as their abstract origin"), |
13603 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13604 | |
791afaa2 | 13605 | offsetp = offsets.data (); |
d389af10 JK |
13606 | origin_child_die = origin_die->child; |
13607 | while (origin_child_die && origin_child_die->tag) | |
13608 | { | |
13609 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13610 | while (offsetp < offsets_end |
9c541725 | 13611 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13612 | offsetp++; |
b64f50a1 | 13613 | if (offsetp >= offsets_end |
9c541725 | 13614 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13615 | { |
adde2bff DE |
13616 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13617 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13618 | This can happen with mutually referenced abstract_origins. | |
13619 | PR 16581. */ | |
13620 | if (!origin_child_die->in_process) | |
13621 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13622 | } |
13623 | origin_child_die = sibling_die (origin_child_die); | |
13624 | } | |
cd02d79d | 13625 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13626 | |
13627 | if (cu != origin_cu) | |
13628 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13629 | } |
13630 | ||
c906108c | 13631 | static void |
e7c27a73 | 13632 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13633 | { |
518817b3 | 13634 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13635 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13636 | struct context_stack *newobj; |
c906108c SS |
13637 | CORE_ADDR lowpc; |
13638 | CORE_ADDR highpc; | |
13639 | struct die_info *child_die; | |
edb3359d | 13640 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13641 | const char *name; |
e142c38c | 13642 | CORE_ADDR baseaddr; |
801e3a5b | 13643 | struct block *block; |
edb3359d | 13644 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13645 | std::vector<struct symbol *> template_args; |
34eaf542 | 13646 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13647 | |
13648 | if (inlined_func) | |
13649 | { | |
13650 | /* If we do not have call site information, we can't show the | |
13651 | caller of this inlined function. That's too confusing, so | |
13652 | only use the scope for local variables. */ | |
13653 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13654 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13655 | if (call_line == NULL || call_file == NULL) | |
13656 | { | |
13657 | read_lexical_block_scope (die, cu); | |
13658 | return; | |
13659 | } | |
13660 | } | |
c906108c | 13661 | |
b3b3bada | 13662 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13663 | |
94af9270 | 13664 | name = dwarf2_name (die, cu); |
c906108c | 13665 | |
e8d05480 JB |
13666 | /* Ignore functions with missing or empty names. These are actually |
13667 | illegal according to the DWARF standard. */ | |
13668 | if (name == NULL) | |
13669 | { | |
b98664d3 | 13670 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13671 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13672 | return; |
13673 | } | |
13674 | ||
13675 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13676 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13677 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13678 | { |
ae4d0c03 PM |
13679 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13680 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13681 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13682 | "for subprogram DIE at %s"), |
13683 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13684 | return; |
13685 | } | |
c906108c | 13686 | |
3e29f34a MR |
13687 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13688 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13689 | |
34eaf542 TT |
13690 | /* If we have any template arguments, then we must allocate a |
13691 | different sort of symbol. */ | |
13692 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13693 | { | |
13694 | if (child_die->tag == DW_TAG_template_type_param | |
13695 | || child_die->tag == DW_TAG_template_value_param) | |
13696 | { | |
e623cf5d | 13697 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13698 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13699 | break; |
13700 | } | |
13701 | } | |
13702 | ||
c24bdb02 | 13703 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13704 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13705 | (struct symbol *) templ_func); | |
4c2df51b | 13706 | |
81873cc8 | 13707 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13708 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13709 | cu->language); |
13710 | ||
4cecd739 DJ |
13711 | /* If there is a location expression for DW_AT_frame_base, record |
13712 | it. */ | |
e142c38c | 13713 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13714 | if (attr != nullptr) |
fe978cb0 | 13715 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13716 | |
63e43d3a PMR |
13717 | /* If there is a location for the static link, record it. */ |
13718 | newobj->static_link = NULL; | |
13719 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13720 | if (attr != nullptr) |
63e43d3a | 13721 | { |
224c3ddb SM |
13722 | newobj->static_link |
13723 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d AB |
13724 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
13725 | dwarf2_per_cu_addr_type (cu->per_cu)); | |
63e43d3a PMR |
13726 | } |
13727 | ||
c24bdb02 | 13728 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13729 | |
639d11d3 | 13730 | if (die->child != NULL) |
c906108c | 13731 | { |
639d11d3 | 13732 | child_die = die->child; |
c906108c SS |
13733 | while (child_die && child_die->tag) |
13734 | { | |
34eaf542 TT |
13735 | if (child_die->tag == DW_TAG_template_type_param |
13736 | || child_die->tag == DW_TAG_template_value_param) | |
13737 | { | |
13738 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13739 | ||
f1078f66 | 13740 | if (arg != NULL) |
2f4732b0 | 13741 | template_args.push_back (arg); |
34eaf542 TT |
13742 | } |
13743 | else | |
13744 | process_die (child_die, cu); | |
c906108c SS |
13745 | child_die = sibling_die (child_die); |
13746 | } | |
13747 | } | |
13748 | ||
d389af10 JK |
13749 | inherit_abstract_dies (die, cu); |
13750 | ||
4a811a97 UW |
13751 | /* If we have a DW_AT_specification, we might need to import using |
13752 | directives from the context of the specification DIE. See the | |
13753 | comment in determine_prefix. */ | |
13754 | if (cu->language == language_cplus | |
13755 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13756 | { | |
13757 | struct dwarf2_cu *spec_cu = cu; | |
13758 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13759 | ||
13760 | while (spec_die) | |
13761 | { | |
13762 | child_die = spec_die->child; | |
13763 | while (child_die && child_die->tag) | |
13764 | { | |
13765 | if (child_die->tag == DW_TAG_imported_module) | |
13766 | process_die (child_die, spec_cu); | |
13767 | child_die = sibling_die (child_die); | |
13768 | } | |
13769 | ||
13770 | /* In some cases, GCC generates specification DIEs that | |
13771 | themselves contain DW_AT_specification attributes. */ | |
13772 | spec_die = die_specification (spec_die, &spec_cu); | |
13773 | } | |
13774 | } | |
13775 | ||
c24bdb02 | 13776 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13777 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13778 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13779 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13780 | |
df8a16a1 | 13781 | /* For C++, set the block's scope. */ |
45280282 IB |
13782 | if ((cu->language == language_cplus |
13783 | || cu->language == language_fortran | |
c44af4eb TT |
13784 | || cu->language == language_d |
13785 | || cu->language == language_rust) | |
4d4ec4e5 | 13786 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13787 | block_set_scope (block, determine_prefix (die, cu), |
13788 | &objfile->objfile_obstack); | |
df8a16a1 | 13789 | |
801e3a5b JB |
13790 | /* If we have address ranges, record them. */ |
13791 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13792 | |
a60f3166 | 13793 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13794 | |
34eaf542 | 13795 | /* Attach template arguments to function. */ |
2f4732b0 | 13796 | if (!template_args.empty ()) |
34eaf542 TT |
13797 | { |
13798 | gdb_assert (templ_func != NULL); | |
13799 | ||
2f4732b0 | 13800 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13801 | templ_func->template_arguments |
8d749320 SM |
13802 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13803 | templ_func->n_template_arguments); | |
34eaf542 | 13804 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13805 | template_args.data (), |
34eaf542 | 13806 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13807 | |
13808 | /* Make sure that the symtab is set on the new symbols. Even | |
13809 | though they don't appear in this symtab directly, other parts | |
13810 | of gdb assume that symbols do, and this is reasonably | |
13811 | true. */ | |
8634679f | 13812 | for (symbol *sym : template_args) |
3e1d3d8c | 13813 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13814 | } |
13815 | ||
208d8187 JB |
13816 | /* In C++, we can have functions nested inside functions (e.g., when |
13817 | a function declares a class that has methods). This means that | |
13818 | when we finish processing a function scope, we may need to go | |
13819 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13820 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13821 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13822 | |
921e78cf JB |
13823 | /* If we've finished processing a top-level function, subsequent |
13824 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13825 | if (cu->get_builder ()->outermost_context_p ()) |
13826 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13827 | } |
13828 | ||
13829 | /* Process all the DIES contained within a lexical block scope. Start | |
13830 | a new scope, process the dies, and then close the scope. */ | |
13831 | ||
13832 | static void | |
e7c27a73 | 13833 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13834 | { |
518817b3 | 13835 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13836 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13837 | CORE_ADDR lowpc, highpc; |
13838 | struct die_info *child_die; | |
e142c38c DJ |
13839 | CORE_ADDR baseaddr; |
13840 | ||
b3b3bada | 13841 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13842 | |
13843 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13844 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13845 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13846 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13847 | describe ranges. */ |
e385593e JK |
13848 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13849 | { | |
13850 | case PC_BOUNDS_NOT_PRESENT: | |
13851 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13852 | there was no wrapping by that DW_TAG_lexical_block. | |
13853 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13854 | for (child_die = die->child; | |
13855 | child_die != NULL && child_die->tag; | |
13856 | child_die = sibling_die (child_die)) | |
13857 | process_die (child_die, cu); | |
13858 | return; | |
13859 | case PC_BOUNDS_INVALID: | |
13860 | return; | |
13861 | } | |
3e29f34a MR |
13862 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13863 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13864 | |
c24bdb02 | 13865 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13866 | if (die->child != NULL) |
c906108c | 13867 | { |
639d11d3 | 13868 | child_die = die->child; |
c906108c SS |
13869 | while (child_die && child_die->tag) |
13870 | { | |
e7c27a73 | 13871 | process_die (child_die, cu); |
c906108c SS |
13872 | child_die = sibling_die (child_die); |
13873 | } | |
13874 | } | |
3ea89b92 | 13875 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13876 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13877 | |
c24bdb02 KS |
13878 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13879 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13880 | { |
801e3a5b | 13881 | struct block *block |
c24bdb02 | 13882 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13883 | cstk.start_addr, highpc); |
801e3a5b JB |
13884 | |
13885 | /* Note that recording ranges after traversing children, as we | |
13886 | do here, means that recording a parent's ranges entails | |
13887 | walking across all its children's ranges as they appear in | |
13888 | the address map, which is quadratic behavior. | |
13889 | ||
13890 | It would be nicer to record the parent's ranges before | |
13891 | traversing its children, simply overriding whatever you find | |
13892 | there. But since we don't even decide whether to create a | |
13893 | block until after we've traversed its children, that's hard | |
13894 | to do. */ | |
13895 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13896 | } |
c24bdb02 KS |
13897 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13898 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13899 | } |
13900 | ||
216f72a1 | 13901 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13902 | |
13903 | static void | |
13904 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13905 | { | |
518817b3 | 13906 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13907 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13908 | CORE_ADDR pc, baseaddr; | |
13909 | struct attribute *attr; | |
13910 | struct call_site *call_site, call_site_local; | |
13911 | void **slot; | |
13912 | int nparams; | |
13913 | struct die_info *child_die; | |
13914 | ||
b3b3bada | 13915 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13916 | |
216f72a1 JK |
13917 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13918 | if (attr == NULL) | |
13919 | { | |
13920 | /* This was a pre-DWARF-5 GNU extension alias | |
13921 | for DW_AT_call_return_pc. */ | |
13922 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13923 | } | |
96408a79 SA |
13924 | if (!attr) |
13925 | { | |
b98664d3 | 13926 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13927 | "DIE %s [in module %s]"), |
13928 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13929 | return; |
13930 | } | |
31aa7e4e | 13931 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13932 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13933 | |
13934 | if (cu->call_site_htab == NULL) | |
13935 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13936 | NULL, &objfile->objfile_obstack, | |
13937 | hashtab_obstack_allocate, NULL); | |
13938 | call_site_local.pc = pc; | |
13939 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13940 | if (*slot != NULL) | |
13941 | { | |
b98664d3 | 13942 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13943 | "DIE %s [in module %s]"), |
13944 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13945 | objfile_name (objfile)); |
96408a79 SA |
13946 | return; |
13947 | } | |
13948 | ||
13949 | /* Count parameters at the caller. */ | |
13950 | ||
13951 | nparams = 0; | |
13952 | for (child_die = die->child; child_die && child_die->tag; | |
13953 | child_die = sibling_die (child_die)) | |
13954 | { | |
216f72a1 JK |
13955 | if (child_die->tag != DW_TAG_call_site_parameter |
13956 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13957 | { |
b98664d3 | 13958 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13959 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13960 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13961 | objfile_name (objfile)); |
96408a79 SA |
13962 | continue; |
13963 | } | |
13964 | ||
13965 | nparams++; | |
13966 | } | |
13967 | ||
224c3ddb SM |
13968 | call_site |
13969 | = ((struct call_site *) | |
13970 | obstack_alloc (&objfile->objfile_obstack, | |
13971 | sizeof (*call_site) | |
13972 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13973 | *slot = call_site; |
13974 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13975 | call_site->pc = pc; | |
13976 | ||
216f72a1 JK |
13977 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13978 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13979 | { |
13980 | struct die_info *func_die; | |
13981 | ||
13982 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13983 | for (func_die = die->parent; | |
13984 | func_die && func_die->tag != DW_TAG_subprogram | |
13985 | && func_die->tag != DW_TAG_subroutine_type; | |
13986 | func_die = func_die->parent); | |
13987 | ||
216f72a1 JK |
13988 | /* DW_AT_call_all_calls is a superset |
13989 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13990 | if (func_die |
216f72a1 | 13991 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13992 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13993 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13994 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13995 | { | |
13996 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13997 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13998 | both the initial caller containing the real return address PC and | |
13999 | the final callee containing the current PC of a chain of tail | |
14000 | calls do not need to have the tail call list complete. But any | |
14001 | function candidate for a virtual tail call frame searched via | |
14002 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14003 | determined unambiguously. */ | |
14004 | } | |
14005 | else | |
14006 | { | |
14007 | struct type *func_type = NULL; | |
14008 | ||
14009 | if (func_die) | |
14010 | func_type = get_die_type (func_die, cu); | |
14011 | if (func_type != NULL) | |
14012 | { | |
14013 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14014 | ||
14015 | /* Enlist this call site to the function. */ | |
14016 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14017 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14018 | } | |
14019 | else | |
b98664d3 | 14020 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14021 | "DIE %s [in module %s]"), |
14022 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14023 | } |
14024 | } | |
14025 | ||
216f72a1 JK |
14026 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14027 | if (attr == NULL) | |
14028 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14029 | if (attr == NULL) | |
14030 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14031 | if (attr == NULL) |
216f72a1 JK |
14032 | { |
14033 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14034 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14035 | } | |
96408a79 SA |
14036 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14037 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14038 | /* Keep NULL DWARF_BLOCK. */; | |
14039 | else if (attr_form_is_block (attr)) | |
14040 | { | |
14041 | struct dwarf2_locexpr_baton *dlbaton; | |
14042 | ||
8d749320 | 14043 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14044 | dlbaton->data = DW_BLOCK (attr)->data; |
14045 | dlbaton->size = DW_BLOCK (attr)->size; | |
14046 | dlbaton->per_cu = cu->per_cu; | |
14047 | ||
14048 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14049 | } | |
7771576e | 14050 | else if (attr_form_is_ref (attr)) |
96408a79 | 14051 | { |
96408a79 SA |
14052 | struct dwarf2_cu *target_cu = cu; |
14053 | struct die_info *target_die; | |
14054 | ||
ac9ec31b | 14055 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14056 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14057 | if (die_is_declaration (target_die, target_cu)) |
14058 | { | |
7d45c7c3 | 14059 | const char *target_physname; |
9112db09 JK |
14060 | |
14061 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14062 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14063 | if (target_physname == NULL) |
9112db09 | 14064 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14065 | if (target_physname == NULL) |
b98664d3 | 14066 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14067 | "physname, for referencing DIE %s [in module %s]"), |
14068 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14069 | else |
7d455152 | 14070 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14071 | } |
14072 | else | |
14073 | { | |
14074 | CORE_ADDR lowpc; | |
14075 | ||
14076 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14077 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14078 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14079 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14080 | "low pc, for referencing DIE %s [in module %s]"), |
14081 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14082 | else |
3e29f34a MR |
14083 | { |
14084 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14085 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14086 | } | |
96408a79 SA |
14087 | } |
14088 | } | |
14089 | else | |
b98664d3 | 14090 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14091 | "block nor reference, for DIE %s [in module %s]"), |
14092 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14093 | |
14094 | call_site->per_cu = cu->per_cu; | |
14095 | ||
14096 | for (child_die = die->child; | |
14097 | child_die && child_die->tag; | |
14098 | child_die = sibling_die (child_die)) | |
14099 | { | |
96408a79 | 14100 | struct call_site_parameter *parameter; |
1788b2d3 | 14101 | struct attribute *loc, *origin; |
96408a79 | 14102 | |
216f72a1 JK |
14103 | if (child_die->tag != DW_TAG_call_site_parameter |
14104 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14105 | { |
14106 | /* Already printed the complaint above. */ | |
14107 | continue; | |
14108 | } | |
14109 | ||
14110 | gdb_assert (call_site->parameter_count < nparams); | |
14111 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14112 | ||
1788b2d3 JK |
14113 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14114 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14115 | register is contained in DW_AT_call_value. */ |
96408a79 | 14116 | |
24c5c679 | 14117 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14118 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14119 | if (origin == NULL) | |
14120 | { | |
14121 | /* This was a pre-DWARF-5 GNU extension alias | |
14122 | for DW_AT_call_parameter. */ | |
14123 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14124 | } | |
7771576e | 14125 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14126 | { |
1788b2d3 | 14127 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14128 | |
14129 | sect_offset sect_off | |
14130 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14131 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14132 | { |
14133 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14134 | binding can be done only inside one CU. Such referenced DIE | |
14135 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14136 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14137 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14138 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14139 | objfile_name (objfile)); |
d76b7dbc JK |
14140 | continue; |
14141 | } | |
9c541725 PA |
14142 | parameter->u.param_cu_off |
14143 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14144 | } |
14145 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14146 | { |
b98664d3 | 14147 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14148 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14149 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14150 | continue; |
14151 | } | |
24c5c679 | 14152 | else |
96408a79 | 14153 | { |
24c5c679 JK |
14154 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14155 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14156 | if (parameter->u.dwarf_reg != -1) | |
14157 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14158 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14159 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14160 | ¶meter->u.fb_offset)) | |
14161 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14162 | else | |
14163 | { | |
b98664d3 | 14164 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14165 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14166 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14167 | "[in module %s]"), |
9d8780f0 | 14168 | sect_offset_str (child_die->sect_off), |
9c541725 | 14169 | objfile_name (objfile)); |
24c5c679 JK |
14170 | continue; |
14171 | } | |
96408a79 SA |
14172 | } |
14173 | ||
216f72a1 JK |
14174 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14175 | if (attr == NULL) | |
14176 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14177 | if (!attr_form_is_block (attr)) |
14178 | { | |
b98664d3 | 14179 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14180 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14181 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14182 | objfile_name (objfile)); |
96408a79 SA |
14183 | continue; |
14184 | } | |
14185 | parameter->value = DW_BLOCK (attr)->data; | |
14186 | parameter->value_size = DW_BLOCK (attr)->size; | |
14187 | ||
14188 | /* Parameters are not pre-cleared by memset above. */ | |
14189 | parameter->data_value = NULL; | |
14190 | parameter->data_value_size = 0; | |
14191 | call_site->parameter_count++; | |
14192 | ||
216f72a1 JK |
14193 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14194 | if (attr == NULL) | |
14195 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14196 | if (attr != nullptr) |
96408a79 SA |
14197 | { |
14198 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14199 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14200 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14201 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14202 | objfile_name (objfile)); |
96408a79 SA |
14203 | else |
14204 | { | |
14205 | parameter->data_value = DW_BLOCK (attr)->data; | |
14206 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14207 | } | |
14208 | } | |
14209 | } | |
14210 | } | |
14211 | ||
71a3c369 TT |
14212 | /* Helper function for read_variable. If DIE represents a virtual |
14213 | table, then return the type of the concrete object that is | |
14214 | associated with the virtual table. Otherwise, return NULL. */ | |
14215 | ||
14216 | static struct type * | |
14217 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14218 | { | |
14219 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14220 | if (attr == NULL) | |
14221 | return NULL; | |
14222 | ||
14223 | /* Find the type DIE. */ | |
14224 | struct die_info *type_die = NULL; | |
14225 | struct dwarf2_cu *type_cu = cu; | |
14226 | ||
14227 | if (attr_form_is_ref (attr)) | |
14228 | type_die = follow_die_ref (die, attr, &type_cu); | |
14229 | if (type_die == NULL) | |
14230 | return NULL; | |
14231 | ||
14232 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14233 | return NULL; | |
14234 | return die_containing_type (type_die, type_cu); | |
14235 | } | |
14236 | ||
14237 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14238 | ||
14239 | static void | |
14240 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14241 | { | |
14242 | struct rust_vtable_symbol *storage = NULL; | |
14243 | ||
14244 | if (cu->language == language_rust) | |
14245 | { | |
14246 | struct type *containing_type = rust_containing_type (die, cu); | |
14247 | ||
14248 | if (containing_type != NULL) | |
14249 | { | |
518817b3 | 14250 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 14251 | |
468c0cbb | 14252 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
14253 | initialize_objfile_symbol (storage); |
14254 | storage->concrete_type = containing_type; | |
cf724bc9 | 14255 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14256 | } |
14257 | } | |
14258 | ||
e4a62c65 TV |
14259 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14260 | struct attribute *abstract_origin | |
14261 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14262 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14263 | if (res == NULL && loc && abstract_origin) | |
14264 | { | |
14265 | /* We have a variable without a name, but with a location and an abstract | |
14266 | origin. This may be a concrete instance of an abstract variable | |
14267 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14268 | later. */ | |
14269 | struct dwarf2_cu *origin_cu = cu; | |
14270 | struct die_info *origin_die | |
14271 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14272 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 14273 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 14274 | } |
71a3c369 TT |
14275 | } |
14276 | ||
43988095 JK |
14277 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14278 | reading .debug_rnglists. | |
14279 | Callback's type should be: | |
14280 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14281 | Return true if the attributes are present and valid, otherwise, | |
14282 | return false. */ | |
14283 | ||
14284 | template <typename Callback> | |
14285 | static bool | |
14286 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14287 | Callback &&callback) | |
14288 | { | |
ed2dc618 | 14289 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14290 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14291 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14292 | bfd *obfd = objfile->obfd; |
43988095 JK |
14293 | /* Base address selection entry. */ |
14294 | CORE_ADDR base; | |
14295 | int found_base; | |
43988095 | 14296 | const gdb_byte *buffer; |
43988095 JK |
14297 | CORE_ADDR baseaddr; |
14298 | bool overflow = false; | |
14299 | ||
14300 | found_base = cu->base_known; | |
14301 | base = cu->base_address; | |
14302 | ||
14303 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14304 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14305 | { | |
b98664d3 | 14306 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14307 | offset); |
14308 | return false; | |
14309 | } | |
14310 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14311 | ||
b3b3bada | 14312 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14313 | |
14314 | while (1) | |
14315 | { | |
7814882a JK |
14316 | /* Initialize it due to a false compiler warning. */ |
14317 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14318 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14319 | + dwarf2_per_objfile->rnglists.size); | |
14320 | unsigned int bytes_read; | |
14321 | ||
14322 | if (buffer == buf_end) | |
14323 | { | |
14324 | overflow = true; | |
14325 | break; | |
14326 | } | |
14327 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14328 | switch (rlet) | |
14329 | { | |
14330 | case DW_RLE_end_of_list: | |
14331 | break; | |
14332 | case DW_RLE_base_address: | |
14333 | if (buffer + cu->header.addr_size > buf_end) | |
14334 | { | |
14335 | overflow = true; | |
14336 | break; | |
14337 | } | |
14338 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14339 | found_base = 1; | |
14340 | buffer += bytes_read; | |
14341 | break; | |
14342 | case DW_RLE_start_length: | |
14343 | if (buffer + cu->header.addr_size > buf_end) | |
14344 | { | |
14345 | overflow = true; | |
14346 | break; | |
14347 | } | |
14348 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14349 | buffer += bytes_read; | |
14350 | range_end = (range_beginning | |
14351 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14352 | buffer += bytes_read; | |
14353 | if (buffer > buf_end) | |
14354 | { | |
14355 | overflow = true; | |
14356 | break; | |
14357 | } | |
14358 | break; | |
14359 | case DW_RLE_offset_pair: | |
14360 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14361 | buffer += bytes_read; | |
14362 | if (buffer > buf_end) | |
14363 | { | |
14364 | overflow = true; | |
14365 | break; | |
14366 | } | |
14367 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14368 | buffer += bytes_read; | |
14369 | if (buffer > buf_end) | |
14370 | { | |
14371 | overflow = true; | |
14372 | break; | |
14373 | } | |
14374 | break; | |
14375 | case DW_RLE_start_end: | |
14376 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14377 | { | |
14378 | overflow = true; | |
14379 | break; | |
14380 | } | |
14381 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14382 | buffer += bytes_read; | |
14383 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14384 | buffer += bytes_read; | |
14385 | break; | |
14386 | default: | |
b98664d3 | 14387 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14388 | return false; |
14389 | } | |
14390 | if (rlet == DW_RLE_end_of_list || overflow) | |
14391 | break; | |
14392 | if (rlet == DW_RLE_base_address) | |
14393 | continue; | |
14394 | ||
14395 | if (!found_base) | |
14396 | { | |
14397 | /* We have no valid base address for the ranges | |
14398 | data. */ | |
b98664d3 | 14399 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14400 | return false; |
14401 | } | |
14402 | ||
14403 | if (range_beginning > range_end) | |
14404 | { | |
14405 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14406 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14407 | return false; |
14408 | } | |
14409 | ||
14410 | /* Empty range entries have no effect. */ | |
14411 | if (range_beginning == range_end) | |
14412 | continue; | |
14413 | ||
14414 | range_beginning += base; | |
14415 | range_end += base; | |
14416 | ||
14417 | /* A not-uncommon case of bad debug info. | |
14418 | Don't pollute the addrmap with bad data. */ | |
14419 | if (range_beginning + baseaddr == 0 | |
14420 | && !dwarf2_per_objfile->has_section_at_zero) | |
14421 | { | |
b98664d3 | 14422 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14423 | " [in module %s]"), objfile_name (objfile)); |
14424 | continue; | |
14425 | } | |
14426 | ||
14427 | callback (range_beginning, range_end); | |
14428 | } | |
14429 | ||
14430 | if (overflow) | |
14431 | { | |
b98664d3 | 14432 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14433 | "for DW_AT_ranges attribute"), |
14434 | offset); | |
14435 | return false; | |
14436 | } | |
14437 | ||
14438 | return true; | |
14439 | } | |
14440 | ||
14441 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14442 | Callback's type should be: | |
14443 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14444 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14445 | |
43988095 | 14446 | template <typename Callback> |
43039443 | 14447 | static int |
5f46c5a5 | 14448 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14449 | Callback &&callback) |
43039443 | 14450 | { |
ed2dc618 | 14451 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14452 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14453 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14454 | struct comp_unit_head *cu_header = &cu->header; |
14455 | bfd *obfd = objfile->obfd; | |
14456 | unsigned int addr_size = cu_header->addr_size; | |
14457 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14458 | /* Base address selection entry. */ | |
14459 | CORE_ADDR base; | |
14460 | int found_base; | |
14461 | unsigned int dummy; | |
d521ce57 | 14462 | const gdb_byte *buffer; |
ff013f42 | 14463 | CORE_ADDR baseaddr; |
43039443 | 14464 | |
43988095 JK |
14465 | if (cu_header->version >= 5) |
14466 | return dwarf2_rnglists_process (offset, cu, callback); | |
14467 | ||
d00adf39 DE |
14468 | found_base = cu->base_known; |
14469 | base = cu->base_address; | |
43039443 | 14470 | |
be391dca | 14471 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14472 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14473 | { |
b98664d3 | 14474 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14475 | offset); |
14476 | return 0; | |
14477 | } | |
dce234bc | 14478 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14479 | |
b3b3bada | 14480 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14481 | |
43039443 JK |
14482 | while (1) |
14483 | { | |
14484 | CORE_ADDR range_beginning, range_end; | |
14485 | ||
14486 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14487 | buffer += addr_size; | |
14488 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14489 | buffer += addr_size; | |
14490 | offset += 2 * addr_size; | |
14491 | ||
14492 | /* An end of list marker is a pair of zero addresses. */ | |
14493 | if (range_beginning == 0 && range_end == 0) | |
14494 | /* Found the end of list entry. */ | |
14495 | break; | |
14496 | ||
14497 | /* Each base address selection entry is a pair of 2 values. | |
14498 | The first is the largest possible address, the second is | |
14499 | the base address. Check for a base address here. */ | |
14500 | if ((range_beginning & mask) == mask) | |
14501 | { | |
28d2bfb9 AB |
14502 | /* If we found the largest possible address, then we already |
14503 | have the base address in range_end. */ | |
14504 | base = range_end; | |
43039443 JK |
14505 | found_base = 1; |
14506 | continue; | |
14507 | } | |
14508 | ||
14509 | if (!found_base) | |
14510 | { | |
14511 | /* We have no valid base address for the ranges | |
14512 | data. */ | |
b98664d3 | 14513 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14514 | return 0; |
14515 | } | |
14516 | ||
9277c30c UW |
14517 | if (range_beginning > range_end) |
14518 | { | |
14519 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14520 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14521 | return 0; |
14522 | } | |
14523 | ||
14524 | /* Empty range entries have no effect. */ | |
14525 | if (range_beginning == range_end) | |
14526 | continue; | |
14527 | ||
43039443 JK |
14528 | range_beginning += base; |
14529 | range_end += base; | |
14530 | ||
01093045 DE |
14531 | /* A not-uncommon case of bad debug info. |
14532 | Don't pollute the addrmap with bad data. */ | |
14533 | if (range_beginning + baseaddr == 0 | |
14534 | && !dwarf2_per_objfile->has_section_at_zero) | |
14535 | { | |
b98664d3 | 14536 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14537 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14538 | continue; |
14539 | } | |
14540 | ||
5f46c5a5 JK |
14541 | callback (range_beginning, range_end); |
14542 | } | |
14543 | ||
14544 | return 1; | |
14545 | } | |
14546 | ||
14547 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14548 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14549 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14550 | ||
14551 | static int | |
14552 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14553 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14554 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14555 | { |
518817b3 | 14556 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 14557 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 14558 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14559 | int low_set = 0; |
14560 | CORE_ADDR low = 0; | |
14561 | CORE_ADDR high = 0; | |
14562 | int retval; | |
14563 | ||
14564 | retval = dwarf2_ranges_process (offset, cu, | |
14565 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14566 | { | |
9277c30c | 14567 | if (ranges_pst != NULL) |
3e29f34a MR |
14568 | { |
14569 | CORE_ADDR lowpc; | |
14570 | CORE_ADDR highpc; | |
14571 | ||
79748972 TT |
14572 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14573 | range_beginning + baseaddr) | |
14574 | - baseaddr); | |
14575 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14576 | range_end + baseaddr) | |
14577 | - baseaddr); | |
d320c2b5 TT |
14578 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14579 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14580 | } |
ff013f42 | 14581 | |
43039443 JK |
14582 | /* FIXME: This is recording everything as a low-high |
14583 | segment of consecutive addresses. We should have a | |
14584 | data structure for discontiguous block ranges | |
14585 | instead. */ | |
14586 | if (! low_set) | |
14587 | { | |
14588 | low = range_beginning; | |
14589 | high = range_end; | |
14590 | low_set = 1; | |
14591 | } | |
14592 | else | |
14593 | { | |
14594 | if (range_beginning < low) | |
14595 | low = range_beginning; | |
14596 | if (range_end > high) | |
14597 | high = range_end; | |
14598 | } | |
5f46c5a5 JK |
14599 | }); |
14600 | if (!retval) | |
14601 | return 0; | |
43039443 JK |
14602 | |
14603 | if (! low_set) | |
14604 | /* If the first entry is an end-of-list marker, the range | |
14605 | describes an empty scope, i.e. no instructions. */ | |
14606 | return 0; | |
14607 | ||
14608 | if (low_return) | |
14609 | *low_return = low; | |
14610 | if (high_return) | |
14611 | *high_return = high; | |
14612 | return 1; | |
14613 | } | |
14614 | ||
3a2b436a JK |
14615 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14616 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14617 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14618 | |
3a2b436a | 14619 | static enum pc_bounds_kind |
af34e669 | 14620 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14621 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14622 | dwarf2_psymtab *pst) |
c906108c | 14623 | { |
518817b3 SM |
14624 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14625 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14626 | struct attribute *attr; |
91da1414 | 14627 | struct attribute *attr_high; |
af34e669 DJ |
14628 | CORE_ADDR low = 0; |
14629 | CORE_ADDR high = 0; | |
e385593e | 14630 | enum pc_bounds_kind ret; |
c906108c | 14631 | |
91da1414 MW |
14632 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14633 | if (attr_high) | |
af34e669 | 14634 | { |
e142c38c | 14635 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14636 | if (attr != nullptr) |
91da1414 | 14637 | { |
31aa7e4e JB |
14638 | low = attr_value_as_address (attr); |
14639 | high = attr_value_as_address (attr_high); | |
14640 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14641 | high += low; | |
91da1414 | 14642 | } |
af34e669 DJ |
14643 | else |
14644 | /* Found high w/o low attribute. */ | |
e385593e | 14645 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14646 | |
14647 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14648 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14649 | } |
c906108c | 14650 | else |
af34e669 | 14651 | { |
e142c38c | 14652 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14653 | if (attr != NULL) |
14654 | { | |
18a8505e | 14655 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14656 | We take advantage of the fact that DW_AT_ranges does not appear |
14657 | in DW_TAG_compile_unit of DWO files. */ | |
14658 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14659 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14660 | + (need_ranges_base | |
14661 | ? cu->ranges_base | |
14662 | : 0)); | |
2e3cf129 | 14663 | |
af34e669 | 14664 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14665 | .debug_ranges section. */ |
2e3cf129 | 14666 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14667 | return PC_BOUNDS_INVALID; |
43039443 | 14668 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14669 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14670 | } |
e385593e JK |
14671 | else |
14672 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14673 | } |
c906108c | 14674 | |
48fbe735 | 14675 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14676 | if (high <= low) |
e385593e | 14677 | return PC_BOUNDS_INVALID; |
c906108c SS |
14678 | |
14679 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14680 | eliminate duplicate copies of functions and vtables and such. | |
14681 | The linker will arbitrarily choose one and discard the others. | |
14682 | The AT_*_pc values for such functions refer to local labels in | |
14683 | these sections. If the section from that file was discarded, the | |
14684 | labels are not in the output, so the relocs get a value of 0. | |
14685 | If this is a discarded function, mark the pc bounds as invalid, | |
14686 | so that GDB will ignore it. */ | |
72dca2f5 | 14687 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14688 | return PC_BOUNDS_INVALID; |
c906108c SS |
14689 | |
14690 | *lowpc = low; | |
96408a79 SA |
14691 | if (highpc) |
14692 | *highpc = high; | |
af34e669 | 14693 | return ret; |
c906108c SS |
14694 | } |
14695 | ||
b084d499 JB |
14696 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14697 | its low and high PC addresses. Do nothing if these addresses could not | |
14698 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14699 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14700 | ||
14701 | static void | |
14702 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14703 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14704 | struct dwarf2_cu *cu) | |
14705 | { | |
14706 | CORE_ADDR low, high; | |
14707 | struct die_info *child = die->child; | |
14708 | ||
e385593e | 14709 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14710 | { |
325fac50 PA |
14711 | *lowpc = std::min (*lowpc, low); |
14712 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14713 | } |
14714 | ||
14715 | /* If the language does not allow nested subprograms (either inside | |
14716 | subprograms or lexical blocks), we're done. */ | |
14717 | if (cu->language != language_ada) | |
14718 | return; | |
6e70227d | 14719 | |
b084d499 JB |
14720 | /* Check all the children of the given DIE. If it contains nested |
14721 | subprograms, then check their pc bounds. Likewise, we need to | |
14722 | check lexical blocks as well, as they may also contain subprogram | |
14723 | definitions. */ | |
14724 | while (child && child->tag) | |
14725 | { | |
14726 | if (child->tag == DW_TAG_subprogram | |
14727 | || child->tag == DW_TAG_lexical_block) | |
14728 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14729 | child = sibling_die (child); | |
14730 | } | |
14731 | } | |
14732 | ||
fae299cd DC |
14733 | /* Get the low and high pc's represented by the scope DIE, and store |
14734 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14735 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14736 | ||
14737 | static void | |
14738 | get_scope_pc_bounds (struct die_info *die, | |
14739 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14740 | struct dwarf2_cu *cu) | |
14741 | { | |
14742 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14743 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14744 | CORE_ADDR current_low, current_high; | |
14745 | ||
3a2b436a | 14746 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14747 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14748 | { |
14749 | best_low = current_low; | |
14750 | best_high = current_high; | |
14751 | } | |
14752 | else | |
14753 | { | |
14754 | struct die_info *child = die->child; | |
14755 | ||
14756 | while (child && child->tag) | |
14757 | { | |
14758 | switch (child->tag) { | |
14759 | case DW_TAG_subprogram: | |
b084d499 | 14760 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14761 | break; |
14762 | case DW_TAG_namespace: | |
f55ee35c | 14763 | case DW_TAG_module: |
fae299cd DC |
14764 | /* FIXME: carlton/2004-01-16: Should we do this for |
14765 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14766 | that current GCC's always emit the DIEs corresponding | |
14767 | to definitions of methods of classes as children of a | |
14768 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14769 | the DIEs giving the declarations, which could be | |
14770 | anywhere). But I don't see any reason why the | |
14771 | standards says that they have to be there. */ | |
14772 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14773 | ||
14774 | if (current_low != ((CORE_ADDR) -1)) | |
14775 | { | |
325fac50 PA |
14776 | best_low = std::min (best_low, current_low); |
14777 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14778 | } |
14779 | break; | |
14780 | default: | |
0963b4bd | 14781 | /* Ignore. */ |
fae299cd DC |
14782 | break; |
14783 | } | |
14784 | ||
14785 | child = sibling_die (child); | |
14786 | } | |
14787 | } | |
14788 | ||
14789 | *lowpc = best_low; | |
14790 | *highpc = best_high; | |
14791 | } | |
14792 | ||
801e3a5b JB |
14793 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14794 | in DIE. */ | |
380bca97 | 14795 | |
801e3a5b JB |
14796 | static void |
14797 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14798 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14799 | { | |
518817b3 | 14800 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14801 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14802 | struct attribute *attr; |
91da1414 | 14803 | struct attribute *attr_high; |
801e3a5b | 14804 | |
91da1414 MW |
14805 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14806 | if (attr_high) | |
801e3a5b | 14807 | { |
801e3a5b | 14808 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14809 | if (attr != nullptr) |
801e3a5b | 14810 | { |
31aa7e4e JB |
14811 | CORE_ADDR low = attr_value_as_address (attr); |
14812 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14813 | ||
14814 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14815 | high += low; | |
9a619af0 | 14816 | |
3e29f34a MR |
14817 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14818 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14819 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14820 | } |
14821 | } | |
14822 | ||
14823 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14824 | if (attr != nullptr) |
801e3a5b | 14825 | { |
18a8505e | 14826 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14827 | We take advantage of the fact that DW_AT_ranges does not appear |
14828 | in DW_TAG_compile_unit of DWO files. */ | |
14829 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14830 | |
14831 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14832 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14833 | unsigned long offset = (DW_UNSND (attr) |
14834 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14835 | |
2d5f09ec | 14836 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14837 | dwarf2_ranges_process (offset, cu, |
14838 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14839 | { | |
58fdfd2c JK |
14840 | start += baseaddr; |
14841 | end += baseaddr; | |
5f46c5a5 JK |
14842 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14843 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14844 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14845 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14846 | }); |
2d5f09ec KB |
14847 | |
14848 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14849 | } |
14850 | } | |
14851 | ||
685b1105 JK |
14852 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14853 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14854 | |
685b1105 JK |
14855 | static void |
14856 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14857 | { |
38360086 | 14858 | int major, minor; |
60d5a603 JK |
14859 | |
14860 | if (cu->producer == NULL) | |
14861 | { | |
14862 | /* For unknown compilers expect their behavior is DWARF version | |
14863 | compliant. | |
14864 | ||
14865 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14866 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14867 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14868 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14869 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14870 | } |
b1ffba5a | 14871 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14872 | { |
38360086 MW |
14873 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14874 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14875 | } |
5230b05a | 14876 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14877 | { |
14878 | cu->producer_is_icc = true; | |
14879 | cu->producer_is_icc_lt_14 = major < 14; | |
14880 | } | |
c258c396 JD |
14881 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14882 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14883 | else |
14884 | { | |
14885 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14886 | compliant. */ | |
60d5a603 JK |
14887 | } |
14888 | ||
9068261f | 14889 | cu->checked_producer = true; |
685b1105 | 14890 | } |
ba919b58 | 14891 | |
685b1105 JK |
14892 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14893 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14894 | during 4.6.0 experimental. */ | |
14895 | ||
9068261f | 14896 | static bool |
685b1105 JK |
14897 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14898 | { | |
14899 | if (!cu->checked_producer) | |
14900 | check_producer (cu); | |
14901 | ||
14902 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14903 | } |
14904 | ||
c258c396 JD |
14905 | |
14906 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14907 | with incorrect is_stmt attributes. */ | |
14908 | ||
14909 | static bool | |
14910 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14911 | { | |
14912 | if (!cu->checked_producer) | |
14913 | check_producer (cu); | |
14914 | ||
14915 | return cu->producer_is_codewarrior; | |
14916 | } | |
14917 | ||
405feb71 | 14918 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14919 | DW_AT_accessibility. */ |
14920 | ||
14921 | static enum dwarf_access_attribute | |
14922 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14923 | { | |
14924 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14925 | { | |
14926 | /* The default DWARF 2 accessibility for members is public, the default | |
14927 | accessibility for inheritance is private. */ | |
14928 | ||
14929 | if (die->tag != DW_TAG_inheritance) | |
14930 | return DW_ACCESS_public; | |
14931 | else | |
14932 | return DW_ACCESS_private; | |
14933 | } | |
14934 | else | |
14935 | { | |
14936 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14937 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14938 | depends on the container kind. */ | |
14939 | ||
14940 | if (die->parent->tag == DW_TAG_class_type) | |
14941 | return DW_ACCESS_private; | |
14942 | else | |
14943 | return DW_ACCESS_public; | |
14944 | } | |
14945 | } | |
14946 | ||
74ac6d43 TT |
14947 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14948 | offset. If the attribute was not found return 0, otherwise return | |
14949 | 1. If it was found but could not properly be handled, set *OFFSET | |
14950 | to 0. */ | |
14951 | ||
14952 | static int | |
14953 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14954 | LONGEST *offset) | |
14955 | { | |
14956 | struct attribute *attr; | |
14957 | ||
14958 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14959 | if (attr != NULL) | |
14960 | { | |
14961 | *offset = 0; | |
14962 | ||
14963 | /* Note that we do not check for a section offset first here. | |
14964 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14965 | so if we see it, we can assume that a constant form is really | |
14966 | a constant and not a section offset. */ | |
14967 | if (attr_form_is_constant (attr)) | |
14968 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14969 | else if (attr_form_is_section_offset (attr)) | |
14970 | dwarf2_complex_location_expr_complaint (); | |
14971 | else if (attr_form_is_block (attr)) | |
14972 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14973 | else | |
14974 | dwarf2_complex_location_expr_complaint (); | |
14975 | ||
14976 | return 1; | |
14977 | } | |
14978 | ||
14979 | return 0; | |
14980 | } | |
14981 | ||
c906108c SS |
14982 | /* Add an aggregate field to the field list. */ |
14983 | ||
14984 | static void | |
107d2387 | 14985 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14986 | struct dwarf2_cu *cu) |
6e70227d | 14987 | { |
518817b3 | 14988 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14989 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14990 | struct nextfield *new_field; |
14991 | struct attribute *attr; | |
14992 | struct field *fp; | |
15d034d0 | 14993 | const char *fieldname = ""; |
c906108c | 14994 | |
7d0ccb61 DJ |
14995 | if (die->tag == DW_TAG_inheritance) |
14996 | { | |
be2daae6 TT |
14997 | fip->baseclasses.emplace_back (); |
14998 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14999 | } |
15000 | else | |
15001 | { | |
be2daae6 TT |
15002 | fip->fields.emplace_back (); |
15003 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15004 | } |
be2daae6 | 15005 | |
c906108c SS |
15006 | fip->nfields++; |
15007 | ||
e142c38c | 15008 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15009 | if (attr != nullptr) |
c906108c | 15010 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
15011 | else |
15012 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15013 | if (new_field->accessibility != DW_ACCESS_public) |
15014 | fip->non_public_fields = 1; | |
60d5a603 | 15015 | |
e142c38c | 15016 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15017 | if (attr != nullptr) |
c906108c | 15018 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
15019 | else |
15020 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15021 | |
15022 | fp = &new_field->field; | |
a9a9bd0f | 15023 | |
e142c38c | 15024 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15025 | { |
74ac6d43 TT |
15026 | LONGEST offset; |
15027 | ||
a9a9bd0f | 15028 | /* Data member other than a C++ static data member. */ |
6e70227d | 15029 | |
c906108c | 15030 | /* Get type of field. */ |
e7c27a73 | 15031 | fp->type = die_type (die, cu); |
c906108c | 15032 | |
d6a843b5 | 15033 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15034 | |
c906108c | 15035 | /* Get bit size of field (zero if none). */ |
e142c38c | 15036 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15037 | if (attr != nullptr) |
c906108c SS |
15038 | { |
15039 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15040 | } | |
15041 | else | |
15042 | { | |
15043 | FIELD_BITSIZE (*fp) = 0; | |
15044 | } | |
15045 | ||
15046 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15047 | if (handle_data_member_location (die, cu, &offset)) |
15048 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15049 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 15050 | if (attr != nullptr) |
c906108c | 15051 | { |
d5a22e77 | 15052 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15053 | { |
15054 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15055 | additional bit offset from the MSB of the containing |
15056 | anonymous object to the MSB of the field. We don't | |
15057 | have to do anything special since we don't need to | |
15058 | know the size of the anonymous object. */ | |
f41f5e61 | 15059 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15060 | } |
15061 | else | |
15062 | { | |
15063 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15064 | MSB of the anonymous object, subtract off the number of |
15065 | bits from the MSB of the field to the MSB of the | |
15066 | object, and then subtract off the number of bits of | |
15067 | the field itself. The result is the bit offset of | |
15068 | the LSB of the field. */ | |
c906108c SS |
15069 | int anonymous_size; |
15070 | int bit_offset = DW_UNSND (attr); | |
15071 | ||
e142c38c | 15072 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15073 | if (attr != nullptr) |
c906108c SS |
15074 | { |
15075 | /* The size of the anonymous object containing | |
15076 | the bit field is explicit, so use the | |
15077 | indicated size (in bytes). */ | |
15078 | anonymous_size = DW_UNSND (attr); | |
15079 | } | |
15080 | else | |
15081 | { | |
15082 | /* The size of the anonymous object containing | |
15083 | the bit field must be inferred from the type | |
15084 | attribute of the data member containing the | |
15085 | bit field. */ | |
15086 | anonymous_size = TYPE_LENGTH (fp->type); | |
15087 | } | |
f41f5e61 PA |
15088 | SET_FIELD_BITPOS (*fp, |
15089 | (FIELD_BITPOS (*fp) | |
15090 | + anonymous_size * bits_per_byte | |
15091 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15092 | } |
15093 | } | |
da5b30da AA |
15094 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15095 | if (attr != NULL) | |
15096 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15097 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15098 | |
15099 | /* Get name of field. */ | |
39cbfefa DJ |
15100 | fieldname = dwarf2_name (die, cu); |
15101 | if (fieldname == NULL) | |
15102 | fieldname = ""; | |
d8151005 DJ |
15103 | |
15104 | /* The name is already allocated along with this objfile, so we don't | |
15105 | need to duplicate it for the type. */ | |
15106 | fp->name = fieldname; | |
c906108c SS |
15107 | |
15108 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15109 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15110 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15111 | { |
d48cc9dd | 15112 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15113 | new_field->accessibility = DW_ACCESS_private; |
15114 | fip->non_public_fields = 1; | |
15115 | } | |
15116 | } | |
a9a9bd0f | 15117 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15118 | { |
a9a9bd0f DC |
15119 | /* C++ static member. */ |
15120 | ||
15121 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15122 | is a declaration, but all versions of G++ as of this writing | |
15123 | (so through at least 3.2.1) incorrectly generate | |
15124 | DW_TAG_variable tags. */ | |
6e70227d | 15125 | |
ff355380 | 15126 | const char *physname; |
c906108c | 15127 | |
a9a9bd0f | 15128 | /* Get name of field. */ |
39cbfefa DJ |
15129 | fieldname = dwarf2_name (die, cu); |
15130 | if (fieldname == NULL) | |
c906108c SS |
15131 | return; |
15132 | ||
254e6b9e | 15133 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15134 | if (attr |
15135 | /* Only create a symbol if this is an external value. | |
15136 | new_symbol checks this and puts the value in the global symbol | |
15137 | table, which we want. If it is not external, new_symbol | |
15138 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15139 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15140 | { |
15141 | /* A static const member, not much different than an enum as far as | |
15142 | we're concerned, except that we can support more types. */ | |
15143 | new_symbol (die, NULL, cu); | |
15144 | } | |
15145 | ||
2df3850c | 15146 | /* Get physical name. */ |
ff355380 | 15147 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15148 | |
d8151005 DJ |
15149 | /* The name is already allocated along with this objfile, so we don't |
15150 | need to duplicate it for the type. */ | |
15151 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15152 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15153 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15154 | } |
15155 | else if (die->tag == DW_TAG_inheritance) | |
15156 | { | |
74ac6d43 | 15157 | LONGEST offset; |
d4b96c9a | 15158 | |
74ac6d43 TT |
15159 | /* C++ base class field. */ |
15160 | if (handle_data_member_location (die, cu, &offset)) | |
15161 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15162 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15163 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15164 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15165 | } |
2ddeaf8a TT |
15166 | else if (die->tag == DW_TAG_variant_part) |
15167 | { | |
15168 | /* process_structure_scope will treat this DIE as a union. */ | |
15169 | process_structure_scope (die, cu); | |
15170 | ||
15171 | /* The variant part is relative to the start of the enclosing | |
15172 | structure. */ | |
15173 | SET_FIELD_BITPOS (*fp, 0); | |
15174 | fp->type = get_die_type (die, cu); | |
15175 | fp->artificial = 1; | |
15176 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15177 | |
15178 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15179 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
15180 | child sizes, being sure to account for the offset at which |
15181 | each child is seen. */ | |
c8c81635 TT |
15182 | if (TYPE_LENGTH (fp->type) == 0) |
15183 | { | |
15184 | unsigned max = 0; | |
15185 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
15186 | { |
15187 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
15188 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
15189 | if (len > max) | |
15190 | max = len; | |
15191 | } | |
c8c81635 TT |
15192 | TYPE_LENGTH (fp->type) = max; |
15193 | } | |
2ddeaf8a TT |
15194 | } |
15195 | else | |
15196 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15197 | } |
15198 | ||
883fd55a KS |
15199 | /* Can the type given by DIE define another type? */ |
15200 | ||
15201 | static bool | |
15202 | type_can_define_types (const struct die_info *die) | |
15203 | { | |
15204 | switch (die->tag) | |
15205 | { | |
15206 | case DW_TAG_typedef: | |
15207 | case DW_TAG_class_type: | |
15208 | case DW_TAG_structure_type: | |
15209 | case DW_TAG_union_type: | |
15210 | case DW_TAG_enumeration_type: | |
15211 | return true; | |
15212 | ||
15213 | default: | |
15214 | return false; | |
15215 | } | |
15216 | } | |
15217 | ||
15218 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15219 | |
15220 | static void | |
883fd55a KS |
15221 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15222 | struct dwarf2_cu *cu) | |
6e70227d | 15223 | { |
be2daae6 TT |
15224 | struct decl_field fp; |
15225 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15226 | |
883fd55a | 15227 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15228 | |
883fd55a | 15229 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15230 | fp.name = dwarf2_name (die, cu); |
15231 | fp.type = read_type_die (die, cu); | |
98751a41 | 15232 | |
c191a687 KS |
15233 | /* Save accessibility. */ |
15234 | enum dwarf_access_attribute accessibility; | |
15235 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15236 | if (attr != NULL) | |
15237 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15238 | else | |
15239 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15240 | switch (accessibility) | |
15241 | { | |
15242 | case DW_ACCESS_public: | |
15243 | /* The assumed value if neither private nor protected. */ | |
15244 | break; | |
15245 | case DW_ACCESS_private: | |
be2daae6 | 15246 | fp.is_private = 1; |
c191a687 KS |
15247 | break; |
15248 | case DW_ACCESS_protected: | |
be2daae6 | 15249 | fp.is_protected = 1; |
c191a687 KS |
15250 | break; |
15251 | default: | |
b98664d3 | 15252 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15253 | } |
15254 | ||
883fd55a | 15255 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15256 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15257 | else |
be2daae6 | 15258 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15259 | } |
15260 | ||
c906108c SS |
15261 | /* Create the vector of fields, and attach it to the type. */ |
15262 | ||
15263 | static void | |
fba45db2 | 15264 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15265 | struct dwarf2_cu *cu) |
c906108c SS |
15266 | { |
15267 | int nfields = fip->nfields; | |
15268 | ||
15269 | /* Record the field count, allocate space for the array of fields, | |
15270 | and create blank accessibility bitfields if necessary. */ | |
15271 | TYPE_NFIELDS (type) = nfields; | |
15272 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15273 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15274 | |
b4ba55a1 | 15275 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15276 | { |
15277 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15278 | ||
15279 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15280 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15281 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15282 | ||
15283 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15284 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15285 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15286 | ||
774b6a14 TT |
15287 | TYPE_FIELD_IGNORE_BITS (type) = |
15288 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15289 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15290 | } |
15291 | ||
15292 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15293 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15294 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15295 | { |
be2daae6 | 15296 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15297 | unsigned char *pointer; |
c906108c SS |
15298 | |
15299 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15300 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15301 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15302 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15303 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15304 | } |
15305 | ||
2ddeaf8a TT |
15306 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15307 | { | |
15308 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15309 | ||
be2daae6 | 15310 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15311 | { |
be2daae6 TT |
15312 | struct nextfield &field = fip->fields[index]; |
15313 | ||
15314 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15315 | di->discriminant_index = index; |
be2daae6 | 15316 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15317 | di->default_index = index; |
15318 | else | |
be2daae6 | 15319 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15320 | } |
15321 | } | |
15322 | ||
be2daae6 TT |
15323 | /* Copy the saved-up fields into the field vector. */ |
15324 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15325 | { |
be2daae6 TT |
15326 | struct nextfield &field |
15327 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15328 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15329 | |
be2daae6 TT |
15330 | TYPE_FIELD (type, i) = field.field; |
15331 | switch (field.accessibility) | |
c906108c | 15332 | { |
c5aa993b | 15333 | case DW_ACCESS_private: |
b4ba55a1 | 15334 | if (cu->language != language_ada) |
be2daae6 | 15335 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15336 | break; |
c906108c | 15337 | |
c5aa993b | 15338 | case DW_ACCESS_protected: |
b4ba55a1 | 15339 | if (cu->language != language_ada) |
be2daae6 | 15340 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15341 | break; |
c906108c | 15342 | |
c5aa993b JM |
15343 | case DW_ACCESS_public: |
15344 | break; | |
c906108c | 15345 | |
c5aa993b JM |
15346 | default: |
15347 | /* Unknown accessibility. Complain and treat it as public. */ | |
15348 | { | |
b98664d3 | 15349 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15350 | field.accessibility); |
c5aa993b JM |
15351 | } |
15352 | break; | |
c906108c | 15353 | } |
be2daae6 | 15354 | if (i < fip->baseclasses.size ()) |
c906108c | 15355 | { |
be2daae6 | 15356 | switch (field.virtuality) |
c906108c | 15357 | { |
c5aa993b JM |
15358 | case DW_VIRTUALITY_virtual: |
15359 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15360 | if (cu->language == language_ada) |
a73c6dcd | 15361 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15362 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15363 | break; |
c906108c SS |
15364 | } |
15365 | } | |
c906108c SS |
15366 | } |
15367 | } | |
15368 | ||
7d27a96d TT |
15369 | /* Return true if this member function is a constructor, false |
15370 | otherwise. */ | |
15371 | ||
15372 | static int | |
15373 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15374 | { | |
15375 | const char *fieldname; | |
fe978cb0 | 15376 | const char *type_name; |
7d27a96d TT |
15377 | int len; |
15378 | ||
15379 | if (die->parent == NULL) | |
15380 | return 0; | |
15381 | ||
15382 | if (die->parent->tag != DW_TAG_structure_type | |
15383 | && die->parent->tag != DW_TAG_union_type | |
15384 | && die->parent->tag != DW_TAG_class_type) | |
15385 | return 0; | |
15386 | ||
15387 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15388 | type_name = dwarf2_name (die->parent, cu); |
15389 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15390 | return 0; |
15391 | ||
15392 | len = strlen (fieldname); | |
fe978cb0 PA |
15393 | return (strncmp (fieldname, type_name, len) == 0 |
15394 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15395 | } |
15396 | ||
e35000a7 TBA |
15397 | /* Check if the given VALUE is a recognized enum |
15398 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15399 | Table 7.24. */ | |
15400 | ||
15401 | static bool | |
15402 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15403 | { | |
15404 | switch (value) | |
15405 | { | |
15406 | case DW_DEFAULTED_no: | |
15407 | case DW_DEFAULTED_in_class: | |
15408 | case DW_DEFAULTED_out_of_class: | |
15409 | return true; | |
15410 | } | |
15411 | ||
3142e908 | 15412 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15413 | return false; |
15414 | } | |
15415 | ||
c906108c SS |
15416 | /* Add a member function to the proper fieldlist. */ |
15417 | ||
15418 | static void | |
107d2387 | 15419 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15420 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15421 | { |
518817b3 | 15422 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15423 | struct attribute *attr; |
c906108c | 15424 | int i; |
be2daae6 | 15425 | struct fnfieldlist *flp = nullptr; |
c906108c | 15426 | struct fn_field *fnp; |
15d034d0 | 15427 | const char *fieldname; |
f792889a | 15428 | struct type *this_type; |
60d5a603 | 15429 | enum dwarf_access_attribute accessibility; |
c906108c | 15430 | |
b4ba55a1 | 15431 | if (cu->language == language_ada) |
a73c6dcd | 15432 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15433 | |
2df3850c | 15434 | /* Get name of member function. */ |
39cbfefa DJ |
15435 | fieldname = dwarf2_name (die, cu); |
15436 | if (fieldname == NULL) | |
2df3850c | 15437 | return; |
c906108c | 15438 | |
c906108c | 15439 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15440 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15441 | { |
27bfe10e | 15442 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15443 | { |
15444 | flp = &fip->fnfieldlists[i]; | |
15445 | break; | |
15446 | } | |
c906108c SS |
15447 | } |
15448 | ||
be2daae6 TT |
15449 | /* Create a new fnfieldlist if necessary. */ |
15450 | if (flp == nullptr) | |
c906108c | 15451 | { |
be2daae6 TT |
15452 | fip->fnfieldlists.emplace_back (); |
15453 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15454 | flp->name = fieldname; |
be2daae6 | 15455 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15456 | } |
15457 | ||
be2daae6 TT |
15458 | /* Create a new member function field and add it to the vector of |
15459 | fnfieldlists. */ | |
15460 | flp->fnfields.emplace_back (); | |
15461 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15462 | |
15463 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15464 | if (cu->language == language_cplus) |
be2daae6 TT |
15465 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15466 | die, cu); | |
3da10d80 KS |
15467 | else |
15468 | { | |
1d06ead6 | 15469 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15470 | fnp->physname = physname ? physname : ""; |
15471 | } | |
15472 | ||
c906108c | 15473 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15474 | this_type = read_type_die (die, cu); |
15475 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15476 | { |
f792889a | 15477 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15478 | |
f792889a | 15479 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15480 | of the method itself (TYPE_CODE_METHOD). */ |
15481 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15482 | TYPE_TARGET_TYPE (this_type), |
15483 | TYPE_FIELDS (this_type), | |
15484 | TYPE_NFIELDS (this_type), | |
15485 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15486 | |
15487 | /* Handle static member functions. | |
c5aa993b | 15488 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15489 | member functions. G++ helps GDB by marking the first |
15490 | parameter for non-static member functions (which is the this | |
15491 | pointer) as artificial. We obtain this information from | |
15492 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15493 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15494 | fnp->voffset = VOFFSET_STATIC; |
15495 | } | |
15496 | else | |
b98664d3 | 15497 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15498 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15499 | |
15500 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15501 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15502 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15503 | |
3e43a32a MS |
15504 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15505 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15506 | |
15507 | /* Get accessibility. */ | |
e142c38c | 15508 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15509 | if (attr != nullptr) |
aead7601 | 15510 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15511 | else |
15512 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15513 | switch (accessibility) | |
c906108c | 15514 | { |
60d5a603 JK |
15515 | case DW_ACCESS_private: |
15516 | fnp->is_private = 1; | |
15517 | break; | |
15518 | case DW_ACCESS_protected: | |
15519 | fnp->is_protected = 1; | |
15520 | break; | |
c906108c SS |
15521 | } |
15522 | ||
b02dede2 | 15523 | /* Check for artificial methods. */ |
e142c38c | 15524 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15525 | if (attr && DW_UNSND (attr) != 0) |
15526 | fnp->is_artificial = 1; | |
15527 | ||
e35000a7 TBA |
15528 | /* Check for defaulted methods. */ |
15529 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15530 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15531 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15532 | ||
15533 | /* Check for deleted methods. */ | |
15534 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15535 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15536 | fnp->is_deleted = 1; | |
15537 | ||
7d27a96d TT |
15538 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15539 | ||
0d564a31 | 15540 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15541 | function. For older versions of GCC, this is an offset in the |
15542 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15543 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15544 | to the object address. */ |
15545 | ||
e142c38c | 15546 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15547 | if (attr != nullptr) |
8e19ed76 | 15548 | { |
aec5aa8b | 15549 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15550 | { |
aec5aa8b TT |
15551 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15552 | { | |
15553 | /* Old-style GCC. */ | |
15554 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15555 | } | |
15556 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15557 | || (DW_BLOCK (attr)->size > 1 | |
15558 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15559 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15560 | { | |
aec5aa8b TT |
15561 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15562 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15563 | dwarf2_complex_location_expr_complaint (); | |
15564 | else | |
15565 | fnp->voffset /= cu->header.addr_size; | |
15566 | fnp->voffset += 2; | |
15567 | } | |
15568 | else | |
15569 | dwarf2_complex_location_expr_complaint (); | |
15570 | ||
15571 | if (!fnp->fcontext) | |
7e993ebf KS |
15572 | { |
15573 | /* If there is no `this' field and no DW_AT_containing_type, | |
15574 | we cannot actually find a base class context for the | |
15575 | vtable! */ | |
15576 | if (TYPE_NFIELDS (this_type) == 0 | |
15577 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15578 | { | |
b98664d3 | 15579 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15580 | "function \"%s\" (offset %s)"), |
15581 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15582 | } |
15583 | else | |
15584 | { | |
15585 | fnp->fcontext | |
15586 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15587 | } | |
15588 | } | |
aec5aa8b | 15589 | } |
3690dd37 | 15590 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15591 | { |
4d3c2250 | 15592 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15593 | } |
15594 | else | |
15595 | { | |
4d3c2250 KB |
15596 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15597 | fieldname); | |
8e19ed76 | 15598 | } |
0d564a31 | 15599 | } |
d48cc9dd DJ |
15600 | else |
15601 | { | |
15602 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15603 | if (attr && DW_UNSND (attr)) | |
15604 | { | |
15605 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15606 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15607 | "but the vtable offset is not specified"), |
9d8780f0 | 15608 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15609 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15610 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15611 | } | |
15612 | } | |
c906108c SS |
15613 | } |
15614 | ||
15615 | /* Create the vector of member function fields, and attach it to the type. */ | |
15616 | ||
15617 | static void | |
fba45db2 | 15618 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15619 | struct dwarf2_cu *cu) |
c906108c | 15620 | { |
b4ba55a1 | 15621 | if (cu->language == language_ada) |
a73c6dcd | 15622 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15623 | |
c906108c SS |
15624 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15625 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15626 | TYPE_ALLOC (type, |
15627 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15628 | |
be2daae6 | 15629 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15630 | { |
be2daae6 | 15631 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15632 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15633 | |
be2daae6 TT |
15634 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15635 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15636 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15637 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15638 | ||
15639 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15640 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15641 | } |
15642 | ||
be2daae6 | 15643 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15644 | } |
15645 | ||
1168df01 JB |
15646 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15647 | language, zero otherwise. */ | |
15648 | static int | |
15649 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15650 | { | |
15651 | static const char vptr[] = "_vptr"; | |
15652 | ||
9c37b5ae TT |
15653 | /* Look for the C++ form of the vtable. */ |
15654 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15655 | return 1; |
15656 | ||
15657 | return 0; | |
15658 | } | |
15659 | ||
c0dd20ea | 15660 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15661 | functions, with the ABI-specified layout. If TYPE describes |
15662 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15663 | |
15664 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15665 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15666 | |
0b92b5bb TT |
15667 | static void |
15668 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15669 | { |
09e2d7c7 | 15670 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15671 | |
15672 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15673 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15674 | return; | |
c0dd20ea DJ |
15675 | |
15676 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15677 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15678 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15679 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15680 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15681 | return; | |
c0dd20ea DJ |
15682 | |
15683 | /* Find the type of the method. */ | |
0b92b5bb | 15684 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15685 | if (pfn_type == NULL |
15686 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15687 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15688 | return; |
c0dd20ea DJ |
15689 | |
15690 | /* Look for the "this" argument. */ | |
15691 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15692 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15693 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15694 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15695 | return; |
c0dd20ea | 15696 | |
09e2d7c7 | 15697 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15698 | new_type = alloc_type (objfile); |
09e2d7c7 | 15699 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15700 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15701 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15702 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15703 | } |
1168df01 | 15704 | |
2b4424c3 TT |
15705 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15706 | appropriate error checking and issuing complaints if there is a | |
15707 | problem. */ | |
15708 | ||
15709 | static ULONGEST | |
15710 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15711 | { | |
15712 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15713 | ||
15714 | if (attr == nullptr) | |
15715 | return 0; | |
15716 | ||
15717 | if (!attr_form_is_constant (attr)) | |
15718 | { | |
b98664d3 | 15719 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15720 | " - DIE at %s [in module %s]"), |
15721 | sect_offset_str (die->sect_off), | |
15722 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15723 | return 0; | |
15724 | } | |
15725 | ||
15726 | ULONGEST align; | |
15727 | if (attr->form == DW_FORM_sdata) | |
15728 | { | |
15729 | LONGEST val = DW_SND (attr); | |
15730 | if (val < 0) | |
15731 | { | |
b98664d3 | 15732 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15733 | " - DIE at %s [in module %s]"), |
15734 | sect_offset_str (die->sect_off), | |
15735 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15736 | return 0; | |
15737 | } | |
15738 | align = val; | |
15739 | } | |
15740 | else | |
15741 | align = DW_UNSND (attr); | |
15742 | ||
15743 | if (align == 0) | |
15744 | { | |
b98664d3 | 15745 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15746 | " - DIE at %s [in module %s]"), |
15747 | sect_offset_str (die->sect_off), | |
15748 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15749 | return 0; | |
15750 | } | |
15751 | if ((align & (align - 1)) != 0) | |
15752 | { | |
b98664d3 | 15753 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15754 | " - DIE at %s [in module %s]"), |
15755 | sect_offset_str (die->sect_off), | |
15756 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15757 | return 0; | |
15758 | } | |
15759 | ||
15760 | return align; | |
15761 | } | |
15762 | ||
15763 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15764 | the alignment for TYPE. */ | |
15765 | ||
15766 | static void | |
15767 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15768 | struct type *type) | |
15769 | { | |
15770 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15771 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15772 | " - DIE at %s [in module %s]"), |
15773 | sect_offset_str (die->sect_off), | |
15774 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15775 | } | |
685b1105 | 15776 | |
e35000a7 TBA |
15777 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15778 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15779 | ||
15780 | static bool | |
15781 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15782 | { | |
15783 | switch (value) | |
15784 | { | |
15785 | case DW_CC_normal: | |
15786 | case DW_CC_pass_by_reference: | |
15787 | case DW_CC_pass_by_value: | |
15788 | return true; | |
15789 | ||
15790 | default: | |
15791 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15792 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15793 | return false; |
15794 | } | |
15795 | } | |
15796 | ||
d0922fcf TBA |
15797 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15798 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15799 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15800 | ||
15801 | static bool | |
15802 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15803 | { | |
15804 | switch (value) | |
15805 | { | |
15806 | case DW_CC_normal: | |
15807 | case DW_CC_program: | |
15808 | case DW_CC_nocall: | |
15809 | return true; | |
15810 | ||
15811 | case DW_CC_GNU_renesas_sh: | |
15812 | case DW_CC_GNU_borland_fastcall_i386: | |
15813 | case DW_CC_GDB_IBM_OpenCL: | |
15814 | return true; | |
15815 | ||
15816 | default: | |
15817 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15818 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15819 | return false; |
15820 | } | |
15821 | } | |
15822 | ||
c906108c | 15823 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15824 | (definition) to create a type for the structure or union. Fill in |
15825 | the type's name and general properties; the members will not be | |
83655187 DE |
15826 | processed until process_structure_scope. A symbol table entry for |
15827 | the type will also not be done until process_structure_scope (assuming | |
15828 | the type has a name). | |
c906108c | 15829 | |
c767944b DJ |
15830 | NOTE: we need to call these functions regardless of whether or not the |
15831 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15832 | structure or union. This gets the type entered into our set of |
83655187 | 15833 | user defined types. */ |
c906108c | 15834 | |
f792889a | 15835 | static struct type * |
134d01f1 | 15836 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15837 | { |
518817b3 | 15838 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15839 | struct type *type; |
15840 | struct attribute *attr; | |
15d034d0 | 15841 | const char *name; |
c906108c | 15842 | |
348e048f DE |
15843 | /* If the definition of this type lives in .debug_types, read that type. |
15844 | Don't follow DW_AT_specification though, that will take us back up | |
15845 | the chain and we want to go down. */ | |
45e58e77 | 15846 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15847 | if (attr != nullptr) |
348e048f | 15848 | { |
ac9ec31b | 15849 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15850 | |
ac9ec31b | 15851 | /* The type's CU may not be the same as CU. |
02142a6c | 15852 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15853 | return set_die_type (die, type, cu); |
15854 | } | |
15855 | ||
c0dd20ea | 15856 | type = alloc_type (objfile); |
c906108c | 15857 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15858 | |
39cbfefa DJ |
15859 | name = dwarf2_name (die, cu); |
15860 | if (name != NULL) | |
c906108c | 15861 | { |
987504bb | 15862 | if (cu->language == language_cplus |
c44af4eb TT |
15863 | || cu->language == language_d |
15864 | || cu->language == language_rust) | |
63d06c5c | 15865 | { |
15d034d0 | 15866 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15867 | |
15868 | /* dwarf2_full_name might have already finished building the DIE's | |
15869 | type. If so, there is no need to continue. */ | |
15870 | if (get_die_type (die, cu) != NULL) | |
15871 | return get_die_type (die, cu); | |
15872 | ||
e86ca25f | 15873 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15874 | } |
15875 | else | |
15876 | { | |
d8151005 DJ |
15877 | /* The name is already allocated along with this objfile, so |
15878 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15879 | TYPE_NAME (type) = name; |
63d06c5c | 15880 | } |
c906108c SS |
15881 | } |
15882 | ||
15883 | if (die->tag == DW_TAG_structure_type) | |
15884 | { | |
15885 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15886 | } | |
15887 | else if (die->tag == DW_TAG_union_type) | |
15888 | { | |
15889 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15890 | } | |
2ddeaf8a TT |
15891 | else if (die->tag == DW_TAG_variant_part) |
15892 | { | |
15893 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15894 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15895 | } | |
c906108c SS |
15896 | else |
15897 | { | |
4753d33b | 15898 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15899 | } |
15900 | ||
0cc2414c TT |
15901 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15902 | TYPE_DECLARED_CLASS (type) = 1; | |
15903 | ||
e35000a7 TBA |
15904 | /* Store the calling convention in the type if it's available in |
15905 | the die. Otherwise the calling convention remains set to | |
15906 | the default value DW_CC_normal. */ | |
15907 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15908 | if (attr != nullptr | |
15909 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15910 | { | |
15911 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15912 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15913 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15914 | } | |
15915 | ||
e142c38c | 15916 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15917 | if (attr != nullptr) |
c906108c | 15918 | { |
155bfbd3 JB |
15919 | if (attr_form_is_constant (attr)) |
15920 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15921 | else | |
15922 | { | |
15923 | /* For the moment, dynamic type sizes are not supported | |
15924 | by GDB's struct type. The actual size is determined | |
15925 | on-demand when resolving the type of a given object, | |
15926 | so set the type's length to zero for now. Otherwise, | |
15927 | we record an expression as the length, and that expression | |
15928 | could lead to a very large value, which could eventually | |
15929 | lead to us trying to allocate that much memory when creating | |
15930 | a value of that type. */ | |
15931 | TYPE_LENGTH (type) = 0; | |
15932 | } | |
c906108c SS |
15933 | } |
15934 | else | |
15935 | { | |
15936 | TYPE_LENGTH (type) = 0; | |
15937 | } | |
15938 | ||
2b4424c3 TT |
15939 | maybe_set_alignment (cu, die, type); |
15940 | ||
5230b05a | 15941 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15942 | { |
5230b05a WT |
15943 | /* ICC<14 does not output the required DW_AT_declaration on |
15944 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15945 | TYPE_STUB (type) = 1; |
685b1105 JK |
15946 | } |
15947 | else | |
15948 | TYPE_STUB_SUPPORTED (type) = 1; | |
15949 | ||
dc718098 | 15950 | if (die_is_declaration (die, cu)) |
876cecd0 | 15951 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15952 | else if (attr == NULL && die->child == NULL |
15953 | && producer_is_realview (cu->producer)) | |
15954 | /* RealView does not output the required DW_AT_declaration | |
15955 | on incomplete types. */ | |
15956 | TYPE_STUB (type) = 1; | |
dc718098 | 15957 | |
c906108c SS |
15958 | /* We need to add the type field to the die immediately so we don't |
15959 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15960 | type within the structure itself. */ |
1c379e20 | 15961 | set_die_type (die, type, cu); |
c906108c | 15962 | |
7e314c57 JK |
15963 | /* set_die_type should be already done. */ |
15964 | set_descriptive_type (type, die, cu); | |
15965 | ||
c767944b DJ |
15966 | return type; |
15967 | } | |
15968 | ||
2ddeaf8a TT |
15969 | /* A helper for process_structure_scope that handles a single member |
15970 | DIE. */ | |
15971 | ||
15972 | static void | |
15973 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15974 | struct field_info *fi, | |
15975 | std::vector<struct symbol *> *template_args, | |
15976 | struct dwarf2_cu *cu) | |
15977 | { | |
15978 | if (child_die->tag == DW_TAG_member | |
15979 | || child_die->tag == DW_TAG_variable | |
15980 | || child_die->tag == DW_TAG_variant_part) | |
15981 | { | |
15982 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15983 | should be a DW_TAG_member that is a declaration, but | |
15984 | all versions of G++ as of this writing (so through at | |
15985 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15986 | tags for them instead. */ | |
15987 | dwarf2_add_field (fi, child_die, cu); | |
15988 | } | |
15989 | else if (child_die->tag == DW_TAG_subprogram) | |
15990 | { | |
15991 | /* Rust doesn't have member functions in the C++ sense. | |
15992 | However, it does emit ordinary functions as children | |
15993 | of a struct DIE. */ | |
15994 | if (cu->language == language_rust) | |
15995 | read_func_scope (child_die, cu); | |
15996 | else | |
15997 | { | |
15998 | /* C++ member function. */ | |
15999 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16000 | } | |
16001 | } | |
16002 | else if (child_die->tag == DW_TAG_inheritance) | |
16003 | { | |
16004 | /* C++ base class field. */ | |
16005 | dwarf2_add_field (fi, child_die, cu); | |
16006 | } | |
16007 | else if (type_can_define_types (child_die)) | |
16008 | dwarf2_add_type_defn (fi, child_die, cu); | |
16009 | else if (child_die->tag == DW_TAG_template_type_param | |
16010 | || child_die->tag == DW_TAG_template_value_param) | |
16011 | { | |
16012 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16013 | ||
16014 | if (arg != NULL) | |
16015 | template_args->push_back (arg); | |
16016 | } | |
16017 | else if (child_die->tag == DW_TAG_variant) | |
16018 | { | |
16019 | /* In a variant we want to get the discriminant and also add a | |
16020 | field for our sole member child. */ | |
16021 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
16022 | ||
bde09ab7 | 16023 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
16024 | variant_child != NULL; |
16025 | variant_child = sibling_die (variant_child)) | |
16026 | { | |
16027 | if (variant_child->tag == DW_TAG_member) | |
16028 | { | |
16029 | handle_struct_member_die (variant_child, type, fi, | |
16030 | template_args, cu); | |
16031 | /* Only handle the one. */ | |
16032 | break; | |
16033 | } | |
16034 | } | |
16035 | ||
16036 | /* We don't handle this but we might as well report it if we see | |
16037 | it. */ | |
16038 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 16039 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
16040 | " - DIE at %s [in module %s]"), |
16041 | sect_offset_str (child_die->sect_off), | |
16042 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16043 | ||
16044 | /* The first field was just added, so we can stash the | |
16045 | discriminant there. */ | |
be2daae6 | 16046 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 16047 | if (discr == NULL) |
be2daae6 | 16048 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 16049 | else |
be2daae6 | 16050 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
16051 | } |
16052 | } | |
16053 | ||
c767944b DJ |
16054 | /* Finish creating a structure or union type, including filling in |
16055 | its members and creating a symbol for it. */ | |
16056 | ||
16057 | static void | |
16058 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16059 | { | |
518817b3 | 16060 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 16061 | struct die_info *child_die; |
c767944b DJ |
16062 | struct type *type; |
16063 | ||
16064 | type = get_die_type (die, cu); | |
16065 | if (type == NULL) | |
16066 | type = read_structure_type (die, cu); | |
16067 | ||
2ddeaf8a TT |
16068 | /* When reading a DW_TAG_variant_part, we need to notice when we |
16069 | read the discriminant member, so we can record it later in the | |
16070 | discriminant_info. */ | |
16071 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 16072 | sect_offset discr_offset {}; |
3e1d3d8c | 16073 | bool has_template_parameters = false; |
2ddeaf8a TT |
16074 | |
16075 | if (is_variant_part) | |
16076 | { | |
16077 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16078 | if (discr == NULL) | |
16079 | { | |
16080 | /* Maybe it's a univariant form, an extension we support. | |
16081 | In this case arrange not to check the offset. */ | |
16082 | is_variant_part = false; | |
16083 | } | |
16084 | else if (attr_form_is_ref (discr)) | |
16085 | { | |
16086 | struct dwarf2_cu *target_cu = cu; | |
16087 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16088 | ||
16089 | discr_offset = target_die->sect_off; | |
16090 | } | |
16091 | else | |
16092 | { | |
b98664d3 | 16093 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16094 | " - DIE at %s [in module %s]"), |
16095 | sect_offset_str (die->sect_off), | |
16096 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16097 | is_variant_part = false; | |
16098 | } | |
16099 | } | |
16100 | ||
e142c38c | 16101 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16102 | { |
16103 | struct field_info fi; | |
2f4732b0 | 16104 | std::vector<struct symbol *> template_args; |
c906108c | 16105 | |
639d11d3 | 16106 | child_die = die->child; |
c906108c SS |
16107 | |
16108 | while (child_die && child_die->tag) | |
16109 | { | |
2ddeaf8a | 16110 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16111 | |
2ddeaf8a | 16112 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16113 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16114 | |
c906108c SS |
16115 | child_die = sibling_die (child_die); |
16116 | } | |
16117 | ||
34eaf542 | 16118 | /* Attach template arguments to type. */ |
2f4732b0 | 16119 | if (!template_args.empty ()) |
34eaf542 | 16120 | { |
3e1d3d8c | 16121 | has_template_parameters = true; |
34eaf542 | 16122 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16123 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16124 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16125 | = XOBNEWVEC (&objfile->objfile_obstack, |
16126 | struct symbol *, | |
16127 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16128 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16129 | template_args.data (), |
34eaf542 TT |
16130 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16131 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16132 | } |
16133 | ||
c906108c SS |
16134 | /* Attach fields and member functions to the type. */ |
16135 | if (fi.nfields) | |
e7c27a73 | 16136 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16137 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16138 | { |
e7c27a73 | 16139 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16140 | |
c5aa993b | 16141 | /* Get the type which refers to the base class (possibly this |
c906108c | 16142 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16143 | class from the DW_AT_containing_type attribute. This use of |
16144 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16145 | |
e142c38c | 16146 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16147 | { |
e7c27a73 | 16148 | struct type *t = die_containing_type (die, cu); |
c906108c | 16149 | |
ae6ae975 | 16150 | set_type_vptr_basetype (type, t); |
c906108c SS |
16151 | if (type == t) |
16152 | { | |
c906108c SS |
16153 | int i; |
16154 | ||
16155 | /* Our own class provides vtbl ptr. */ | |
16156 | for (i = TYPE_NFIELDS (t) - 1; | |
16157 | i >= TYPE_N_BASECLASSES (t); | |
16158 | --i) | |
16159 | { | |
0d5cff50 | 16160 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16161 | |
1168df01 | 16162 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16163 | { |
ae6ae975 | 16164 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16165 | break; |
16166 | } | |
16167 | } | |
16168 | ||
16169 | /* Complain if virtual function table field not found. */ | |
16170 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16171 | complaint (_("virtual function table pointer " |
3e43a32a | 16172 | "not found when defining class '%s'"), |
e86ca25f | 16173 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16174 | } |
16175 | else | |
16176 | { | |
ae6ae975 | 16177 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16178 | } |
16179 | } | |
f6235d4c | 16180 | else if (cu->producer |
61012eef | 16181 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16182 | { |
16183 | /* The IBM XLC compiler does not provide direct indication | |
16184 | of the containing type, but the vtable pointer is | |
16185 | always named __vfp. */ | |
16186 | ||
16187 | int i; | |
16188 | ||
16189 | for (i = TYPE_NFIELDS (type) - 1; | |
16190 | i >= TYPE_N_BASECLASSES (type); | |
16191 | --i) | |
16192 | { | |
16193 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16194 | { | |
ae6ae975 DE |
16195 | set_type_vptr_fieldno (type, i); |
16196 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16197 | break; |
16198 | } | |
16199 | } | |
16200 | } | |
c906108c | 16201 | } |
98751a41 JK |
16202 | |
16203 | /* Copy fi.typedef_field_list linked list elements content into the | |
16204 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16205 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16206 | { |
be2daae6 | 16207 | int count = fi.typedef_field_list.size (); |
98751a41 | 16208 | |
a0d7a4ff | 16209 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16210 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16211 | = ((struct decl_field *) |
be2daae6 TT |
16212 | TYPE_ALLOC (type, |
16213 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16214 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16215 | |
be2daae6 TT |
16216 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16217 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16218 | } |
c767944b | 16219 | |
883fd55a KS |
16220 | /* Copy fi.nested_types_list linked list elements content into the |
16221 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16222 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16223 | { |
be2daae6 | 16224 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16225 | |
16226 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16227 | TYPE_NESTED_TYPES_ARRAY (type) | |
16228 | = ((struct decl_field *) | |
be2daae6 TT |
16229 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16230 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16231 | |
be2daae6 TT |
16232 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16233 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16234 | } |
c906108c | 16235 | } |
63d06c5c | 16236 | |
bb5ed363 | 16237 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16238 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16239 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16240 | |
90aeadfc DC |
16241 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16242 | snapshots) has been known to create a die giving a declaration | |
16243 | for a class that has, as a child, a die giving a definition for a | |
16244 | nested class. So we have to process our children even if the | |
16245 | current die is a declaration. Normally, of course, a declaration | |
16246 | won't have any children at all. */ | |
134d01f1 | 16247 | |
ca040673 DE |
16248 | child_die = die->child; |
16249 | ||
90aeadfc DC |
16250 | while (child_die != NULL && child_die->tag) |
16251 | { | |
16252 | if (child_die->tag == DW_TAG_member | |
16253 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16254 | || child_die->tag == DW_TAG_inheritance |
16255 | || child_die->tag == DW_TAG_template_value_param | |
16256 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16257 | { |
90aeadfc | 16258 | /* Do nothing. */ |
134d01f1 | 16259 | } |
90aeadfc DC |
16260 | else |
16261 | process_die (child_die, cu); | |
134d01f1 | 16262 | |
90aeadfc | 16263 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16264 | } |
16265 | ||
fa4028e9 JB |
16266 | /* Do not consider external references. According to the DWARF standard, |
16267 | these DIEs are identified by the fact that they have no byte_size | |
16268 | attribute, and a declaration attribute. */ | |
16269 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16270 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16271 | { |
16272 | struct symbol *sym = new_symbol (die, type, cu); | |
16273 | ||
16274 | if (has_template_parameters) | |
16275 | { | |
a776957c TT |
16276 | struct symtab *symtab; |
16277 | if (sym != nullptr) | |
16278 | symtab = symbol_symtab (sym); | |
16279 | else if (cu->line_header != nullptr) | |
16280 | { | |
16281 | /* Any related symtab will do. */ | |
16282 | symtab | |
7ba99d21 | 16283 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16284 | } |
16285 | else | |
16286 | { | |
16287 | symtab = nullptr; | |
16288 | complaint (_("could not find suitable " | |
16289 | "symtab for template parameter" | |
16290 | " - DIE at %s [in module %s]"), | |
16291 | sect_offset_str (die->sect_off), | |
16292 | objfile_name (objfile)); | |
16293 | } | |
16294 | ||
16295 | if (symtab != nullptr) | |
16296 | { | |
16297 | /* Make sure that the symtab is set on the new symbols. | |
16298 | Even though they don't appear in this symtab directly, | |
16299 | other parts of gdb assume that symbols do, and this is | |
16300 | reasonably true. */ | |
16301 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16302 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16303 | } | |
3e1d3d8c TT |
16304 | } |
16305 | } | |
134d01f1 DJ |
16306 | } |
16307 | ||
55426c9d JB |
16308 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16309 | update TYPE using some information only available in DIE's children. */ | |
16310 | ||
16311 | static void | |
16312 | update_enumeration_type_from_children (struct die_info *die, | |
16313 | struct type *type, | |
16314 | struct dwarf2_cu *cu) | |
16315 | { | |
60f7655a | 16316 | struct die_info *child_die; |
55426c9d JB |
16317 | int unsigned_enum = 1; |
16318 | int flag_enum = 1; | |
16319 | ULONGEST mask = 0; | |
55426c9d | 16320 | |
8268c778 | 16321 | auto_obstack obstack; |
55426c9d | 16322 | |
60f7655a DE |
16323 | for (child_die = die->child; |
16324 | child_die != NULL && child_die->tag; | |
16325 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16326 | { |
16327 | struct attribute *attr; | |
16328 | LONGEST value; | |
16329 | const gdb_byte *bytes; | |
16330 | struct dwarf2_locexpr_baton *baton; | |
16331 | const char *name; | |
60f7655a | 16332 | |
55426c9d JB |
16333 | if (child_die->tag != DW_TAG_enumerator) |
16334 | continue; | |
16335 | ||
16336 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16337 | if (attr == NULL) | |
16338 | continue; | |
16339 | ||
16340 | name = dwarf2_name (child_die, cu); | |
16341 | if (name == NULL) | |
16342 | name = "<anonymous enumerator>"; | |
16343 | ||
16344 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16345 | &value, &bytes, &baton); | |
16346 | if (value < 0) | |
16347 | { | |
16348 | unsigned_enum = 0; | |
16349 | flag_enum = 0; | |
16350 | } | |
16351 | else if ((mask & value) != 0) | |
16352 | flag_enum = 0; | |
16353 | else | |
16354 | mask |= value; | |
16355 | ||
16356 | /* If we already know that the enum type is neither unsigned, nor | |
16357 | a flag type, no need to look at the rest of the enumerates. */ | |
16358 | if (!unsigned_enum && !flag_enum) | |
16359 | break; | |
55426c9d JB |
16360 | } |
16361 | ||
16362 | if (unsigned_enum) | |
16363 | TYPE_UNSIGNED (type) = 1; | |
16364 | if (flag_enum) | |
16365 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16366 | } |
16367 | ||
134d01f1 DJ |
16368 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16369 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16370 | |
f792889a | 16371 | static struct type * |
134d01f1 | 16372 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16373 | { |
518817b3 | 16374 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16375 | struct type *type; |
c906108c | 16376 | struct attribute *attr; |
0114d602 | 16377 | const char *name; |
134d01f1 | 16378 | |
348e048f DE |
16379 | /* If the definition of this type lives in .debug_types, read that type. |
16380 | Don't follow DW_AT_specification though, that will take us back up | |
16381 | the chain and we want to go down. */ | |
45e58e77 | 16382 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 16383 | if (attr != nullptr) |
348e048f | 16384 | { |
ac9ec31b | 16385 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16386 | |
ac9ec31b | 16387 | /* The type's CU may not be the same as CU. |
02142a6c | 16388 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16389 | return set_die_type (die, type, cu); |
16390 | } | |
16391 | ||
c906108c SS |
16392 | type = alloc_type (objfile); |
16393 | ||
16394 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16395 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16396 | if (name != NULL) |
e86ca25f | 16397 | TYPE_NAME (type) = name; |
c906108c | 16398 | |
0626fc76 TT |
16399 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16400 | if (attr != NULL) | |
16401 | { | |
16402 | struct type *underlying_type = die_type (die, cu); | |
16403 | ||
16404 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16405 | } | |
16406 | ||
e142c38c | 16407 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16408 | if (attr != nullptr) |
c906108c SS |
16409 | { |
16410 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16411 | } | |
16412 | else | |
16413 | { | |
16414 | TYPE_LENGTH (type) = 0; | |
16415 | } | |
16416 | ||
2b4424c3 TT |
16417 | maybe_set_alignment (cu, die, type); |
16418 | ||
137033e9 JB |
16419 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16420 | declared as private in the package spec, and then defined only | |
16421 | inside the package body. Such types are known as Taft Amendment | |
16422 | Types. When another package uses such a type, an incomplete DIE | |
16423 | may be generated by the compiler. */ | |
02eb380e | 16424 | if (die_is_declaration (die, cu)) |
876cecd0 | 16425 | TYPE_STUB (type) = 1; |
02eb380e | 16426 | |
0626fc76 TT |
16427 | /* Finish the creation of this type by using the enum's children. |
16428 | We must call this even when the underlying type has been provided | |
16429 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16430 | update_enumeration_type_from_children (die, type, cu); |
16431 | ||
0626fc76 TT |
16432 | /* If this type has an underlying type that is not a stub, then we |
16433 | may use its attributes. We always use the "unsigned" attribute | |
16434 | in this situation, because ordinarily we guess whether the type | |
16435 | is unsigned -- but the guess can be wrong and the underlying type | |
16436 | can tell us the reality. However, we defer to a local size | |
16437 | attribute if one exists, because this lets the compiler override | |
16438 | the underlying type if needed. */ | |
16439 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16440 | { | |
16441 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16442 | if (TYPE_LENGTH (type) == 0) | |
16443 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16444 | if (TYPE_RAW_ALIGN (type) == 0 |
16445 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16446 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16447 | } |
16448 | ||
3d567982 TT |
16449 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16450 | ||
f792889a | 16451 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16452 | } |
16453 | ||
16454 | /* Given a pointer to a die which begins an enumeration, process all | |
16455 | the dies that define the members of the enumeration, and create the | |
16456 | symbol for the enumeration type. | |
16457 | ||
16458 | NOTE: We reverse the order of the element list. */ | |
16459 | ||
16460 | static void | |
16461 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16462 | { | |
f792889a | 16463 | struct type *this_type; |
134d01f1 | 16464 | |
f792889a DJ |
16465 | this_type = get_die_type (die, cu); |
16466 | if (this_type == NULL) | |
16467 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16468 | |
639d11d3 | 16469 | if (die->child != NULL) |
c906108c | 16470 | { |
9dc481d3 DE |
16471 | struct die_info *child_die; |
16472 | struct symbol *sym; | |
43816ebc | 16473 | std::vector<struct field> fields; |
15d034d0 | 16474 | const char *name; |
9dc481d3 | 16475 | |
639d11d3 | 16476 | child_die = die->child; |
c906108c SS |
16477 | while (child_die && child_die->tag) |
16478 | { | |
16479 | if (child_die->tag != DW_TAG_enumerator) | |
16480 | { | |
e7c27a73 | 16481 | process_die (child_die, cu); |
c906108c SS |
16482 | } |
16483 | else | |
16484 | { | |
39cbfefa DJ |
16485 | name = dwarf2_name (child_die, cu); |
16486 | if (name) | |
c906108c | 16487 | { |
f792889a | 16488 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 16489 | |
43816ebc TT |
16490 | fields.emplace_back (); |
16491 | struct field &field = fields.back (); | |
c906108c | 16492 | |
43816ebc TT |
16493 | FIELD_NAME (field) = sym->linkage_name (); |
16494 | FIELD_TYPE (field) = NULL; | |
16495 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
16496 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
16497 | } |
16498 | } | |
16499 | ||
16500 | child_die = sibling_die (child_die); | |
16501 | } | |
16502 | ||
43816ebc | 16503 | if (!fields.empty ()) |
c906108c | 16504 | { |
43816ebc | 16505 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 16506 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
16507 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
16508 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
16509 | sizeof (struct field) * fields.size ()); | |
c906108c | 16510 | } |
c906108c | 16511 | } |
134d01f1 | 16512 | |
6c83ed52 TT |
16513 | /* If we are reading an enum from a .debug_types unit, and the enum |
16514 | is a declaration, and the enum is not the signatured type in the | |
16515 | unit, then we do not want to add a symbol for it. Adding a | |
16516 | symbol would in some cases obscure the true definition of the | |
16517 | enum, giving users an incomplete type when the definition is | |
16518 | actually available. Note that we do not want to do this for all | |
16519 | enums which are just declarations, because C++0x allows forward | |
16520 | enum declarations. */ | |
3019eac3 | 16521 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16522 | && die_is_declaration (die, cu)) |
16523 | { | |
52dc124a | 16524 | struct signatured_type *sig_type; |
6c83ed52 | 16525 | |
c0f78cd4 | 16526 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16527 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16528 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16529 | return; |
16530 | } | |
16531 | ||
f792889a | 16532 | new_symbol (die, this_type, cu); |
c906108c SS |
16533 | } |
16534 | ||
16535 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16536 | the DIE's type field. For now, this only handles one dimensional | |
16537 | arrays. */ | |
16538 | ||
f792889a | 16539 | static struct type * |
e7c27a73 | 16540 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16541 | { |
518817b3 | 16542 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16543 | struct die_info *child_die; |
7e314c57 | 16544 | struct type *type; |
c906108c | 16545 | struct type *element_type, *range_type, *index_type; |
c906108c | 16546 | struct attribute *attr; |
15d034d0 | 16547 | const char *name; |
a405673c | 16548 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16549 | unsigned int bit_stride = 0; |
c906108c | 16550 | |
e7c27a73 | 16551 | element_type = die_type (die, cu); |
c906108c | 16552 | |
7e314c57 JK |
16553 | /* The die_type call above may have already set the type for this DIE. */ |
16554 | type = get_die_type (die, cu); | |
16555 | if (type) | |
16556 | return type; | |
16557 | ||
dc53a7ad JB |
16558 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16559 | if (attr != NULL) | |
a405673c JB |
16560 | { |
16561 | int stride_ok; | |
9a49df9d AB |
16562 | struct type *prop_type |
16563 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
a405673c JB |
16564 | |
16565 | byte_stride_prop | |
16566 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16567 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16568 | prop_type); | |
a405673c JB |
16569 | if (!stride_ok) |
16570 | { | |
b98664d3 | 16571 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16572 | " - DIE at %s [in module %s]"), |
16573 | sect_offset_str (die->sect_off), | |
518817b3 | 16574 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16575 | /* Ignore this attribute. We will likely not be able to print |
16576 | arrays of this type correctly, but there is little we can do | |
16577 | to help if we cannot read the attribute's value. */ | |
16578 | byte_stride_prop = NULL; | |
16579 | } | |
16580 | } | |
dc53a7ad JB |
16581 | |
16582 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16583 | if (attr != NULL) | |
16584 | bit_stride = DW_UNSND (attr); | |
16585 | ||
c906108c SS |
16586 | /* Irix 6.2 native cc creates array types without children for |
16587 | arrays with unspecified length. */ | |
639d11d3 | 16588 | if (die->child == NULL) |
c906108c | 16589 | { |
46bf5051 | 16590 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16591 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16592 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16593 | byte_stride_prop, bit_stride); |
f792889a | 16594 | return set_die_type (die, type, cu); |
c906108c SS |
16595 | } |
16596 | ||
791afaa2 | 16597 | std::vector<struct type *> range_types; |
639d11d3 | 16598 | child_die = die->child; |
c906108c SS |
16599 | while (child_die && child_die->tag) |
16600 | { | |
16601 | if (child_die->tag == DW_TAG_subrange_type) | |
16602 | { | |
f792889a | 16603 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16604 | |
f792889a | 16605 | if (child_type != NULL) |
a02abb62 | 16606 | { |
0963b4bd MS |
16607 | /* The range type was succesfully read. Save it for the |
16608 | array type creation. */ | |
791afaa2 | 16609 | range_types.push_back (child_type); |
a02abb62 | 16610 | } |
c906108c SS |
16611 | } |
16612 | child_die = sibling_die (child_die); | |
16613 | } | |
16614 | ||
16615 | /* Dwarf2 dimensions are output from left to right, create the | |
16616 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16617 | |
c906108c | 16618 | type = element_type; |
7ca2d3a3 DL |
16619 | |
16620 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16621 | { | |
16622 | int i = 0; | |
9a619af0 | 16623 | |
791afaa2 | 16624 | while (i < range_types.size ()) |
dc53a7ad | 16625 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16626 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16627 | } |
16628 | else | |
16629 | { | |
791afaa2 | 16630 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16631 | while (ndim-- > 0) |
dc53a7ad | 16632 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16633 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16634 | } |
c906108c | 16635 | |
f5f8a009 EZ |
16636 | /* Understand Dwarf2 support for vector types (like they occur on |
16637 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16638 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16639 | custom vendor extension. The main difference between a regular | |
16640 | array and the vector variant is that vectors are passed by value | |
16641 | to functions. */ | |
e142c38c | 16642 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16643 | if (attr != nullptr) |
ea37ba09 | 16644 | make_vector_type (type); |
f5f8a009 | 16645 | |
dbc98a8b KW |
16646 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16647 | implementation may choose to implement triple vectors using this | |
16648 | attribute. */ | |
16649 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16650 | if (attr != nullptr) |
dbc98a8b KW |
16651 | { |
16652 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16653 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16654 | else | |
b98664d3 | 16655 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16656 | "than the total size of elements")); |
dbc98a8b KW |
16657 | } |
16658 | ||
39cbfefa DJ |
16659 | name = dwarf2_name (die, cu); |
16660 | if (name) | |
16661 | TYPE_NAME (type) = name; | |
6e70227d | 16662 | |
2b4424c3 TT |
16663 | maybe_set_alignment (cu, die, type); |
16664 | ||
0963b4bd | 16665 | /* Install the type in the die. */ |
7e314c57 JK |
16666 | set_die_type (die, type, cu); |
16667 | ||
16668 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16669 | set_descriptive_type (type, die, cu); |
16670 | ||
7e314c57 | 16671 | return type; |
c906108c SS |
16672 | } |
16673 | ||
7ca2d3a3 | 16674 | static enum dwarf_array_dim_ordering |
6e70227d | 16675 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16676 | { |
16677 | struct attribute *attr; | |
16678 | ||
16679 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16680 | ||
435d3d88 | 16681 | if (attr != nullptr) |
aead7601 | 16682 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16683 | |
0963b4bd MS |
16684 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16685 | opposite order to the dwarf2 specification, but data is still | |
16686 | laid out as per normal fortran. | |
7ca2d3a3 | 16687 | |
0963b4bd MS |
16688 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16689 | version checking. */ | |
7ca2d3a3 | 16690 | |
905e0470 PM |
16691 | if (cu->language == language_fortran |
16692 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16693 | { |
16694 | return DW_ORD_row_major; | |
16695 | } | |
16696 | ||
6e70227d | 16697 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16698 | { |
16699 | case array_column_major: | |
16700 | return DW_ORD_col_major; | |
16701 | case array_row_major: | |
16702 | default: | |
16703 | return DW_ORD_row_major; | |
16704 | }; | |
16705 | } | |
16706 | ||
72019c9c | 16707 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16708 | the DIE's type field. */ |
72019c9c | 16709 | |
f792889a | 16710 | static struct type * |
72019c9c GM |
16711 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16712 | { | |
7e314c57 JK |
16713 | struct type *domain_type, *set_type; |
16714 | struct attribute *attr; | |
f792889a | 16715 | |
7e314c57 JK |
16716 | domain_type = die_type (die, cu); |
16717 | ||
16718 | /* The die_type call above may have already set the type for this DIE. */ | |
16719 | set_type = get_die_type (die, cu); | |
16720 | if (set_type) | |
16721 | return set_type; | |
16722 | ||
16723 | set_type = create_set_type (NULL, domain_type); | |
16724 | ||
16725 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16726 | if (attr != nullptr) |
d09039dd | 16727 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16728 | |
2b4424c3 TT |
16729 | maybe_set_alignment (cu, die, set_type); |
16730 | ||
f792889a | 16731 | return set_die_type (die, set_type, cu); |
72019c9c | 16732 | } |
7ca2d3a3 | 16733 | |
0971de02 TT |
16734 | /* A helper for read_common_block that creates a locexpr baton. |
16735 | SYM is the symbol which we are marking as computed. | |
16736 | COMMON_DIE is the DIE for the common block. | |
16737 | COMMON_LOC is the location expression attribute for the common | |
16738 | block itself. | |
16739 | MEMBER_LOC is the location expression attribute for the particular | |
16740 | member of the common block that we are processing. | |
16741 | CU is the CU from which the above come. */ | |
16742 | ||
16743 | static void | |
16744 | mark_common_block_symbol_computed (struct symbol *sym, | |
16745 | struct die_info *common_die, | |
16746 | struct attribute *common_loc, | |
16747 | struct attribute *member_loc, | |
16748 | struct dwarf2_cu *cu) | |
16749 | { | |
518817b3 SM |
16750 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16751 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16752 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16753 | struct dwarf2_locexpr_baton *baton; | |
16754 | gdb_byte *ptr; | |
16755 | unsigned int cu_off; | |
16756 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16757 | LONGEST offset = 0; | |
16758 | ||
16759 | gdb_assert (common_loc && member_loc); | |
16760 | gdb_assert (attr_form_is_block (common_loc)); | |
16761 | gdb_assert (attr_form_is_block (member_loc) | |
16762 | || attr_form_is_constant (member_loc)); | |
16763 | ||
8d749320 | 16764 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16765 | baton->per_cu = cu->per_cu; |
16766 | gdb_assert (baton->per_cu); | |
16767 | ||
16768 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16769 | ||
16770 | if (attr_form_is_constant (member_loc)) | |
16771 | { | |
16772 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16773 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16774 | } | |
16775 | else | |
16776 | baton->size += DW_BLOCK (member_loc)->size; | |
16777 | ||
224c3ddb | 16778 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16779 | baton->data = ptr; |
16780 | ||
16781 | *ptr++ = DW_OP_call4; | |
9c541725 | 16782 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16783 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16784 | ptr += 4; | |
16785 | ||
16786 | if (attr_form_is_constant (member_loc)) | |
16787 | { | |
16788 | *ptr++ = DW_OP_addr; | |
16789 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16790 | ptr += cu->header.addr_size; | |
16791 | } | |
16792 | else | |
16793 | { | |
16794 | /* We have to copy the data here, because DW_OP_call4 will only | |
16795 | use a DW_AT_location attribute. */ | |
16796 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16797 | ptr += DW_BLOCK (member_loc)->size; | |
16798 | } | |
16799 | ||
16800 | *ptr++ = DW_OP_plus; | |
16801 | gdb_assert (ptr - baton->data == baton->size); | |
16802 | ||
0971de02 | 16803 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16804 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16805 | } |
16806 | ||
4357ac6c TT |
16807 | /* Create appropriate locally-scoped variables for all the |
16808 | DW_TAG_common_block entries. Also create a struct common_block | |
16809 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16810 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16811 | variable names. */ |
c906108c SS |
16812 | |
16813 | static void | |
e7c27a73 | 16814 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16815 | { |
0971de02 TT |
16816 | struct attribute *attr; |
16817 | ||
16818 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16819 | if (attr != nullptr) |
0971de02 TT |
16820 | { |
16821 | /* Support the .debug_loc offsets. */ | |
16822 | if (attr_form_is_block (attr)) | |
16823 | { | |
16824 | /* Ok. */ | |
16825 | } | |
16826 | else if (attr_form_is_section_offset (attr)) | |
16827 | { | |
16828 | dwarf2_complex_location_expr_complaint (); | |
16829 | attr = NULL; | |
16830 | } | |
16831 | else | |
16832 | { | |
16833 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16834 | "common block member"); | |
16835 | attr = NULL; | |
16836 | } | |
16837 | } | |
16838 | ||
639d11d3 | 16839 | if (die->child != NULL) |
c906108c | 16840 | { |
518817b3 | 16841 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16842 | struct die_info *child_die; |
16843 | size_t n_entries = 0, size; | |
16844 | struct common_block *common_block; | |
16845 | struct symbol *sym; | |
74ac6d43 | 16846 | |
4357ac6c TT |
16847 | for (child_die = die->child; |
16848 | child_die && child_die->tag; | |
16849 | child_die = sibling_die (child_die)) | |
16850 | ++n_entries; | |
16851 | ||
16852 | size = (sizeof (struct common_block) | |
16853 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16854 | common_block |
16855 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16856 | size); | |
4357ac6c TT |
16857 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16858 | common_block->n_entries = 0; | |
16859 | ||
16860 | for (child_die = die->child; | |
16861 | child_die && child_die->tag; | |
16862 | child_die = sibling_die (child_die)) | |
16863 | { | |
16864 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16865 | symbol scope. */ | |
e7c27a73 | 16866 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16867 | if (sym != NULL) |
16868 | { | |
16869 | struct attribute *member_loc; | |
16870 | ||
16871 | common_block->contents[common_block->n_entries++] = sym; | |
16872 | ||
16873 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16874 | cu); | |
16875 | if (member_loc) | |
16876 | { | |
16877 | /* GDB has handled this for a long time, but it is | |
16878 | not specified by DWARF. It seems to have been | |
16879 | emitted by gfortran at least as recently as: | |
16880 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16881 | complaint (_("Variable in common block has " |
0971de02 | 16882 | "DW_AT_data_member_location " |
9d8780f0 SM |
16883 | "- DIE at %s [in module %s]"), |
16884 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16885 | objfile_name (objfile)); |
0971de02 TT |
16886 | |
16887 | if (attr_form_is_section_offset (member_loc)) | |
16888 | dwarf2_complex_location_expr_complaint (); | |
16889 | else if (attr_form_is_constant (member_loc) | |
16890 | || attr_form_is_block (member_loc)) | |
16891 | { | |
435d3d88 | 16892 | if (attr != nullptr) |
0971de02 TT |
16893 | mark_common_block_symbol_computed (sym, die, attr, |
16894 | member_loc, cu); | |
16895 | } | |
16896 | else | |
16897 | dwarf2_complex_location_expr_complaint (); | |
16898 | } | |
16899 | } | |
c906108c | 16900 | } |
4357ac6c TT |
16901 | |
16902 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16903 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16904 | } |
16905 | } | |
16906 | ||
0114d602 | 16907 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16908 | |
0114d602 DJ |
16909 | static struct type * |
16910 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16911 | { |
518817b3 | 16912 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16913 | const char *previous_prefix, *name; |
9219021c | 16914 | int is_anonymous; |
0114d602 DJ |
16915 | struct type *type; |
16916 | ||
16917 | /* For extensions, reuse the type of the original namespace. */ | |
16918 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16919 | { | |
16920 | struct die_info *ext_die; | |
16921 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16922 | |
0114d602 DJ |
16923 | ext_die = dwarf2_extension (die, &ext_cu); |
16924 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16925 | |
16926 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16927 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16928 | return set_die_type (die, type, cu); |
16929 | } | |
9219021c | 16930 | |
e142c38c | 16931 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16932 | |
16933 | /* Now build the name of the current namespace. */ | |
16934 | ||
0114d602 DJ |
16935 | previous_prefix = determine_prefix (die, cu); |
16936 | if (previous_prefix[0] != '\0') | |
16937 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16938 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16939 | |
16940 | /* Create the type. */ | |
19f392bc | 16941 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16942 | |
60531b24 | 16943 | return set_die_type (die, type, cu); |
0114d602 DJ |
16944 | } |
16945 | ||
22cee43f | 16946 | /* Read a namespace scope. */ |
0114d602 DJ |
16947 | |
16948 | static void | |
16949 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16950 | { | |
518817b3 | 16951 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16952 | int is_anonymous; |
9219021c | 16953 | |
5c4e30ca DC |
16954 | /* Add a symbol associated to this if we haven't seen the namespace |
16955 | before. Also, add a using directive if it's an anonymous | |
16956 | namespace. */ | |
9219021c | 16957 | |
f2f0e013 | 16958 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16959 | { |
16960 | struct type *type; | |
16961 | ||
0114d602 | 16962 | type = read_type_die (die, cu); |
e7c27a73 | 16963 | new_symbol (die, type, cu); |
5c4e30ca | 16964 | |
e8e80198 | 16965 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16966 | if (is_anonymous) |
0114d602 DJ |
16967 | { |
16968 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16969 | |
eb1e02fd | 16970 | std::vector<const char *> excludes; |
804d2729 | 16971 | add_using_directive (using_directives (cu), |
22cee43f | 16972 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16973 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16974 | } |
5c4e30ca | 16975 | } |
9219021c | 16976 | |
639d11d3 | 16977 | if (die->child != NULL) |
d9fa45fe | 16978 | { |
639d11d3 | 16979 | struct die_info *child_die = die->child; |
6e70227d | 16980 | |
d9fa45fe DC |
16981 | while (child_die && child_die->tag) |
16982 | { | |
e7c27a73 | 16983 | process_die (child_die, cu); |
d9fa45fe DC |
16984 | child_die = sibling_die (child_die); |
16985 | } | |
16986 | } | |
38d518c9 EZ |
16987 | } |
16988 | ||
f55ee35c JK |
16989 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16990 | imported module. Still we need that type as local Fortran "use ... only" | |
16991 | declaration imports depend on the created type in determine_prefix. */ | |
16992 | ||
16993 | static struct type * | |
16994 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16995 | { | |
518817b3 | 16996 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16997 | const char *module_name; |
f55ee35c JK |
16998 | struct type *type; |
16999 | ||
17000 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17001 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17002 | |
f55ee35c JK |
17003 | return set_die_type (die, type, cu); |
17004 | } | |
17005 | ||
5d7cb8df JK |
17006 | /* Read a Fortran module. */ |
17007 | ||
17008 | static void | |
17009 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17010 | { | |
17011 | struct die_info *child_die = die->child; | |
530e8392 KB |
17012 | struct type *type; |
17013 | ||
17014 | type = read_type_die (die, cu); | |
17015 | new_symbol (die, type, cu); | |
5d7cb8df | 17016 | |
5d7cb8df JK |
17017 | while (child_die && child_die->tag) |
17018 | { | |
17019 | process_die (child_die, cu); | |
17020 | child_die = sibling_die (child_die); | |
17021 | } | |
17022 | } | |
17023 | ||
38d518c9 EZ |
17024 | /* Return the name of the namespace represented by DIE. Set |
17025 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17026 | namespace. */ | |
17027 | ||
17028 | static const char * | |
e142c38c | 17029 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17030 | { |
17031 | struct die_info *current_die; | |
17032 | const char *name = NULL; | |
17033 | ||
17034 | /* Loop through the extensions until we find a name. */ | |
17035 | ||
17036 | for (current_die = die; | |
17037 | current_die != NULL; | |
f2f0e013 | 17038 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17039 | { |
96553a0c DE |
17040 | /* We don't use dwarf2_name here so that we can detect the absence |
17041 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17042 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17043 | |
38d518c9 EZ |
17044 | if (name != NULL) |
17045 | break; | |
17046 | } | |
17047 | ||
17048 | /* Is it an anonymous namespace? */ | |
17049 | ||
17050 | *is_anonymous = (name == NULL); | |
17051 | if (*is_anonymous) | |
2b1dbab0 | 17052 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17053 | |
17054 | return name; | |
d9fa45fe DC |
17055 | } |
17056 | ||
c906108c SS |
17057 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17058 | the user defined type vector. */ | |
17059 | ||
f792889a | 17060 | static struct type * |
e7c27a73 | 17061 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17062 | { |
518817b3 SM |
17063 | struct gdbarch *gdbarch |
17064 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 17065 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17066 | struct type *type; |
8b2dbe47 KB |
17067 | struct attribute *attr_byte_size; |
17068 | struct attribute *attr_address_class; | |
17069 | int byte_size, addr_class; | |
7e314c57 JK |
17070 | struct type *target_type; |
17071 | ||
17072 | target_type = die_type (die, cu); | |
c906108c | 17073 | |
7e314c57 JK |
17074 | /* The die_type call above may have already set the type for this DIE. */ |
17075 | type = get_die_type (die, cu); | |
17076 | if (type) | |
17077 | return type; | |
17078 | ||
17079 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17080 | |
e142c38c | 17081 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17082 | if (attr_byte_size) |
17083 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17084 | else |
8b2dbe47 KB |
17085 | byte_size = cu_header->addr_size; |
17086 | ||
e142c38c | 17087 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17088 | if (attr_address_class) |
17089 | addr_class = DW_UNSND (attr_address_class); | |
17090 | else | |
17091 | addr_class = DW_ADDR_none; | |
17092 | ||
2b4424c3 TT |
17093 | ULONGEST alignment = get_alignment (cu, die); |
17094 | ||
17095 | /* If the pointer size, alignment, or address class is different | |
17096 | than the default, create a type variant marked as such and set | |
17097 | the length accordingly. */ | |
17098 | if (TYPE_LENGTH (type) != byte_size | |
17099 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17100 | && alignment != TYPE_RAW_ALIGN (type)) | |
17101 | || addr_class != DW_ADDR_none) | |
c906108c | 17102 | { |
5e2b427d | 17103 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17104 | { |
17105 | int type_flags; | |
17106 | ||
849957d9 | 17107 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17108 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17109 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17110 | == 0); | |
8b2dbe47 KB |
17111 | type = make_type_with_address_space (type, type_flags); |
17112 | } | |
17113 | else if (TYPE_LENGTH (type) != byte_size) | |
17114 | { | |
b98664d3 | 17115 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17116 | } |
2b4424c3 TT |
17117 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17118 | { | |
b98664d3 | 17119 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17120 | " - DIE at %s [in module %s]"), |
17121 | sect_offset_str (die->sect_off), | |
17122 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17123 | } | |
6e70227d | 17124 | else |
9a619af0 MS |
17125 | { |
17126 | /* Should we also complain about unhandled address classes? */ | |
17127 | } | |
c906108c | 17128 | } |
8b2dbe47 KB |
17129 | |
17130 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17131 | set_type_align (type, alignment); |
f792889a | 17132 | return set_die_type (die, type, cu); |
c906108c SS |
17133 | } |
17134 | ||
17135 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17136 | the user defined type vector. */ | |
17137 | ||
f792889a | 17138 | static struct type * |
e7c27a73 | 17139 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17140 | { |
17141 | struct type *type; | |
17142 | struct type *to_type; | |
17143 | struct type *domain; | |
17144 | ||
e7c27a73 DJ |
17145 | to_type = die_type (die, cu); |
17146 | domain = die_containing_type (die, cu); | |
0d5de010 | 17147 | |
7e314c57 JK |
17148 | /* The calls above may have already set the type for this DIE. */ |
17149 | type = get_die_type (die, cu); | |
17150 | if (type) | |
17151 | return type; | |
17152 | ||
0d5de010 DJ |
17153 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17154 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17155 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17156 | { | |
518817b3 SM |
17157 | struct type *new_type |
17158 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17159 | |
17160 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17161 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17162 | TYPE_VARARGS (to_type)); | |
17163 | type = lookup_methodptr_type (new_type); | |
17164 | } | |
0d5de010 DJ |
17165 | else |
17166 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17167 | |
f792889a | 17168 | return set_die_type (die, type, cu); |
c906108c SS |
17169 | } |
17170 | ||
4297a3f0 | 17171 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17172 | the user defined type vector. */ |
17173 | ||
f792889a | 17174 | static struct type * |
4297a3f0 AV |
17175 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17176 | enum type_code refcode) | |
c906108c | 17177 | { |
e7c27a73 | 17178 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17179 | struct type *type, *target_type; |
c906108c SS |
17180 | struct attribute *attr; |
17181 | ||
4297a3f0 AV |
17182 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17183 | ||
7e314c57 JK |
17184 | target_type = die_type (die, cu); |
17185 | ||
17186 | /* The die_type call above may have already set the type for this DIE. */ | |
17187 | type = get_die_type (die, cu); | |
17188 | if (type) | |
17189 | return type; | |
17190 | ||
4297a3f0 | 17191 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17192 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17193 | if (attr != nullptr) |
c906108c SS |
17194 | { |
17195 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17196 | } | |
17197 | else | |
17198 | { | |
107d2387 | 17199 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17200 | } |
2b4424c3 | 17201 | maybe_set_alignment (cu, die, type); |
f792889a | 17202 | return set_die_type (die, type, cu); |
c906108c SS |
17203 | } |
17204 | ||
cf363f18 MW |
17205 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17206 | outputs DWARF type qualifiers that apply to an array, not the | |
17207 | element type. But GDB relies on the array element type to carry | |
17208 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17209 | specification. */ | |
17210 | ||
17211 | static struct type * | |
17212 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17213 | struct type *base_type, int cnst, int voltl) | |
17214 | { | |
17215 | struct type *el_type, *inner_array; | |
17216 | ||
17217 | base_type = copy_type (base_type); | |
17218 | inner_array = base_type; | |
17219 | ||
17220 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17221 | { | |
17222 | TYPE_TARGET_TYPE (inner_array) = | |
17223 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17224 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17225 | } | |
17226 | ||
17227 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17228 | cnst |= TYPE_CONST (el_type); | |
17229 | voltl |= TYPE_VOLATILE (el_type); | |
17230 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17231 | ||
17232 | return set_die_type (die, base_type, cu); | |
17233 | } | |
17234 | ||
f792889a | 17235 | static struct type * |
e7c27a73 | 17236 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17237 | { |
f792889a | 17238 | struct type *base_type, *cv_type; |
c906108c | 17239 | |
e7c27a73 | 17240 | base_type = die_type (die, cu); |
7e314c57 JK |
17241 | |
17242 | /* The die_type call above may have already set the type for this DIE. */ | |
17243 | cv_type = get_die_type (die, cu); | |
17244 | if (cv_type) | |
17245 | return cv_type; | |
17246 | ||
2f608a3a KW |
17247 | /* In case the const qualifier is applied to an array type, the element type |
17248 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17249 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17250 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17251 | |
f792889a DJ |
17252 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17253 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17254 | } |
17255 | ||
f792889a | 17256 | static struct type * |
e7c27a73 | 17257 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17258 | { |
f792889a | 17259 | struct type *base_type, *cv_type; |
c906108c | 17260 | |
e7c27a73 | 17261 | base_type = die_type (die, cu); |
7e314c57 JK |
17262 | |
17263 | /* The die_type call above may have already set the type for this DIE. */ | |
17264 | cv_type = get_die_type (die, cu); | |
17265 | if (cv_type) | |
17266 | return cv_type; | |
17267 | ||
cf363f18 MW |
17268 | /* In case the volatile qualifier is applied to an array type, the |
17269 | element type is so qualified, not the array type (section 6.7.3 | |
17270 | of C99). */ | |
17271 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17272 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17273 | ||
f792889a DJ |
17274 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17275 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17276 | } |
17277 | ||
06d66ee9 TT |
17278 | /* Handle DW_TAG_restrict_type. */ |
17279 | ||
17280 | static struct type * | |
17281 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17282 | { | |
17283 | struct type *base_type, *cv_type; | |
17284 | ||
17285 | base_type = die_type (die, cu); | |
17286 | ||
17287 | /* The die_type call above may have already set the type for this DIE. */ | |
17288 | cv_type = get_die_type (die, cu); | |
17289 | if (cv_type) | |
17290 | return cv_type; | |
17291 | ||
17292 | cv_type = make_restrict_type (base_type); | |
17293 | return set_die_type (die, cv_type, cu); | |
17294 | } | |
17295 | ||
a2c2acaf MW |
17296 | /* Handle DW_TAG_atomic_type. */ |
17297 | ||
17298 | static struct type * | |
17299 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17300 | { | |
17301 | struct type *base_type, *cv_type; | |
17302 | ||
17303 | base_type = die_type (die, cu); | |
17304 | ||
17305 | /* The die_type call above may have already set the type for this DIE. */ | |
17306 | cv_type = get_die_type (die, cu); | |
17307 | if (cv_type) | |
17308 | return cv_type; | |
17309 | ||
17310 | cv_type = make_atomic_type (base_type); | |
17311 | return set_die_type (die, cv_type, cu); | |
17312 | } | |
17313 | ||
c906108c SS |
17314 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17315 | the user defined type vector. It isn't really a user defined type, | |
17316 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17317 | attribute to reference it. */ | |
17318 | ||
f792889a | 17319 | static struct type * |
e7c27a73 | 17320 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17321 | { |
518817b3 | 17322 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17323 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17324 | struct type *type, *range_type, *index_type, *char_type; |
17325 | struct attribute *attr; | |
216a7e6b AB |
17326 | struct dynamic_prop prop; |
17327 | bool length_is_constant = true; | |
17328 | LONGEST length; | |
17329 | ||
17330 | /* There are a couple of places where bit sizes might be made use of | |
17331 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17332 | of make use of these. Handling bit sizes that are a multiple of the | |
17333 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17334 | with that problem when we have to. Warn about these attributes being | |
17335 | unsupported, then parse the type and ignore them like we always | |
17336 | have. */ | |
17337 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17338 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17339 | { | |
17340 | static bool warning_printed = false; | |
17341 | if (!warning_printed) | |
17342 | { | |
17343 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17344 | "currently supported on DW_TAG_string_type.")); | |
17345 | warning_printed = true; | |
17346 | } | |
17347 | } | |
c906108c | 17348 | |
e142c38c | 17349 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
216a7e6b AB |
17350 | if (attr != nullptr && !attr_form_is_constant (attr)) |
17351 | { | |
17352 | /* The string length describes the location at which the length of | |
17353 | the string can be found. The size of the length field can be | |
17354 | specified with one of the attributes below. */ | |
17355 | struct type *prop_type; | |
17356 | struct attribute *len | |
17357 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17358 | if (len == nullptr) | |
17359 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
17360 | if (len != nullptr && attr_form_is_constant (len)) | |
17361 | { | |
17362 | /* Pass 0 as the default as we know this attribute is constant | |
17363 | and the default value will not be returned. */ | |
17364 | LONGEST sz = dwarf2_get_attr_constant_value (len, 0); | |
17365 | prop_type = dwarf2_per_cu_int_type (cu->per_cu, sz, true); | |
17366 | } | |
17367 | else | |
17368 | { | |
17369 | /* If the size is not specified then we assume it is the size of | |
17370 | an address on this target. */ | |
17371 | prop_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, true); | |
17372 | } | |
17373 | ||
17374 | /* Convert the attribute into a dynamic property. */ | |
17375 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17376 | length = 1; | |
17377 | else | |
17378 | length_is_constant = false; | |
17379 | } | |
17380 | else if (attr != nullptr) | |
17381 | { | |
17382 | /* This DW_AT_string_length just contains the length with no | |
17383 | indirection. There's no need to create a dynamic property in this | |
17384 | case. Pass 0 for the default value as we know it will not be | |
17385 | returned in this case. */ | |
17386 | length = dwarf2_get_attr_constant_value (attr, 0); | |
17387 | } | |
17388 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17389 | { |
216a7e6b AB |
17390 | /* We don't currently support non-constant byte sizes for strings. */ |
17391 | length = dwarf2_get_attr_constant_value (attr, 1); | |
c906108c SS |
17392 | } |
17393 | else | |
17394 | { | |
216a7e6b AB |
17395 | /* Use 1 as a fallback length if we have nothing else. */ |
17396 | length = 1; | |
c906108c | 17397 | } |
6ccb9162 | 17398 | |
46bf5051 | 17399 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17400 | if (length_is_constant) |
17401 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17402 | else | |
17403 | { | |
17404 | struct dynamic_prop low_bound; | |
17405 | ||
17406 | low_bound.kind = PROP_CONST; | |
17407 | low_bound.data.const_val = 1; | |
17408 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17409 | } | |
3b7538c0 UW |
17410 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17411 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17412 | |
f792889a | 17413 | return set_die_type (die, type, cu); |
c906108c SS |
17414 | } |
17415 | ||
4d804846 JB |
17416 | /* Assuming that DIE corresponds to a function, returns nonzero |
17417 | if the function is prototyped. */ | |
17418 | ||
17419 | static int | |
17420 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17421 | { | |
17422 | struct attribute *attr; | |
17423 | ||
17424 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17425 | if (attr && (DW_UNSND (attr) != 0)) | |
17426 | return 1; | |
17427 | ||
17428 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17429 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17430 | languages that allow unprototyped functions (Eg: Objective C). |
17431 | For all other languages, assume that functions are always | |
17432 | prototyped. */ | |
17433 | if (cu->language != language_c | |
17434 | && cu->language != language_objc | |
17435 | && cu->language != language_opencl) | |
17436 | return 1; | |
17437 | ||
17438 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17439 | prototyped and unprototyped functions; default to prototyped, | |
17440 | since that is more common in modern code (and RealView warns | |
17441 | about unprototyped functions). */ | |
17442 | if (producer_is_realview (cu->producer)) | |
17443 | return 1; | |
17444 | ||
17445 | return 0; | |
17446 | } | |
17447 | ||
c906108c SS |
17448 | /* Handle DIES due to C code like: |
17449 | ||
17450 | struct foo | |
c5aa993b JM |
17451 | { |
17452 | int (*funcp)(int a, long l); | |
17453 | int b; | |
17454 | }; | |
c906108c | 17455 | |
0963b4bd | 17456 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17457 | |
f792889a | 17458 | static struct type * |
e7c27a73 | 17459 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17460 | { |
518817b3 | 17461 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17462 | struct type *type; /* Type that this function returns. */ |
17463 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17464 | struct attribute *attr; |
17465 | ||
e7c27a73 | 17466 | type = die_type (die, cu); |
7e314c57 JK |
17467 | |
17468 | /* The die_type call above may have already set the type for this DIE. */ | |
17469 | ftype = get_die_type (die, cu); | |
17470 | if (ftype) | |
17471 | return ftype; | |
17472 | ||
0c8b41f1 | 17473 | ftype = lookup_function_type (type); |
c906108c | 17474 | |
4d804846 | 17475 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17476 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17477 | |
c055b101 CV |
17478 | /* Store the calling convention in the type if it's available in |
17479 | the subroutine die. Otherwise set the calling convention to | |
17480 | the default value DW_CC_normal. */ | |
17481 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17482 | if (attr != nullptr |
17483 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17484 | TYPE_CALLING_CONVENTION (ftype) | |
17485 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17486 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17487 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17488 | else | |
17489 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17490 | |
743649fd MW |
17491 | /* Record whether the function returns normally to its caller or not |
17492 | if the DWARF producer set that information. */ | |
17493 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17494 | if (attr && (DW_UNSND (attr) != 0)) | |
17495 | TYPE_NO_RETURN (ftype) = 1; | |
17496 | ||
76c10ea2 GM |
17497 | /* We need to add the subroutine type to the die immediately so |
17498 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17499 | declared as the same subroutine type. */ |
76c10ea2 | 17500 | set_die_type (die, ftype, cu); |
6e70227d | 17501 | |
639d11d3 | 17502 | if (die->child != NULL) |
c906108c | 17503 | { |
bb5ed363 | 17504 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17505 | struct die_info *child_die; |
8072405b | 17506 | int nparams, iparams; |
c906108c SS |
17507 | |
17508 | /* Count the number of parameters. | |
17509 | FIXME: GDB currently ignores vararg functions, but knows about | |
17510 | vararg member functions. */ | |
8072405b | 17511 | nparams = 0; |
639d11d3 | 17512 | child_die = die->child; |
c906108c SS |
17513 | while (child_die && child_die->tag) |
17514 | { | |
17515 | if (child_die->tag == DW_TAG_formal_parameter) | |
17516 | nparams++; | |
17517 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17518 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17519 | child_die = sibling_die (child_die); |
17520 | } | |
17521 | ||
17522 | /* Allocate storage for parameters and fill them in. */ | |
17523 | TYPE_NFIELDS (ftype) = nparams; | |
17524 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17525 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17526 | |
8072405b JK |
17527 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17528 | even if we error out during the parameters reading below. */ | |
17529 | for (iparams = 0; iparams < nparams; iparams++) | |
17530 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17531 | ||
17532 | iparams = 0; | |
639d11d3 | 17533 | child_die = die->child; |
c906108c SS |
17534 | while (child_die && child_die->tag) |
17535 | { | |
17536 | if (child_die->tag == DW_TAG_formal_parameter) | |
17537 | { | |
3ce3b1ba PA |
17538 | struct type *arg_type; |
17539 | ||
17540 | /* DWARF version 2 has no clean way to discern C++ | |
17541 | static and non-static member functions. G++ helps | |
17542 | GDB by marking the first parameter for non-static | |
17543 | member functions (which is the this pointer) as | |
17544 | artificial. We pass this information to | |
17545 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17546 | ||
17547 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17548 | 4.5 does not yet generate. */ | |
e142c38c | 17549 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17550 | if (attr != nullptr) |
c906108c SS |
17551 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17552 | else | |
9c37b5ae | 17553 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17554 | arg_type = die_type (child_die, cu); |
17555 | ||
17556 | /* RealView does not mark THIS as const, which the testsuite | |
17557 | expects. GCC marks THIS as const in method definitions, | |
17558 | but not in the class specifications (GCC PR 43053). */ | |
17559 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17560 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17561 | { | |
17562 | int is_this = 0; | |
17563 | struct dwarf2_cu *arg_cu = cu; | |
17564 | const char *name = dwarf2_name (child_die, cu); | |
17565 | ||
17566 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17567 | if (attr != nullptr) |
3ce3b1ba PA |
17568 | { |
17569 | /* If the compiler emits this, use it. */ | |
17570 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17571 | is_this = 1; | |
17572 | } | |
17573 | else if (name && strcmp (name, "this") == 0) | |
17574 | /* Function definitions will have the argument names. */ | |
17575 | is_this = 1; | |
17576 | else if (name == NULL && iparams == 0) | |
17577 | /* Declarations may not have the names, so like | |
17578 | elsewhere in GDB, assume an artificial first | |
17579 | argument is "this". */ | |
17580 | is_this = 1; | |
17581 | ||
17582 | if (is_this) | |
17583 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17584 | arg_type, 0); | |
17585 | } | |
17586 | ||
17587 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17588 | iparams++; |
17589 | } | |
17590 | child_die = sibling_die (child_die); | |
17591 | } | |
17592 | } | |
17593 | ||
76c10ea2 | 17594 | return ftype; |
c906108c SS |
17595 | } |
17596 | ||
f792889a | 17597 | static struct type * |
e7c27a73 | 17598 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17599 | { |
518817b3 | 17600 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17601 | const char *name = NULL; |
3c8e0968 | 17602 | struct type *this_type, *target_type; |
c906108c | 17603 | |
94af9270 | 17604 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17605 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17606 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17607 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17608 | target_type = die_type (die, cu); |
17609 | if (target_type != this_type) | |
17610 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17611 | else | |
17612 | { | |
17613 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17614 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17615 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17616 | "- DIE at %s [in module %s]"), |
17617 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17618 | TYPE_TARGET_TYPE (this_type) = NULL; |
17619 | } | |
f792889a | 17620 | return this_type; |
c906108c SS |
17621 | } |
17622 | ||
9b790ce7 UW |
17623 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17624 | (which may be different from NAME) to the architecture back-end to allow | |
17625 | it to guess the correct format if necessary. */ | |
17626 | ||
17627 | static struct type * | |
17628 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17629 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
17630 | { |
17631 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17632 | const struct floatformat **format; | |
17633 | struct type *type; | |
17634 | ||
17635 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17636 | if (format) | |
103a685e | 17637 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17638 | else |
77b7c781 | 17639 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17640 | |
17641 | return type; | |
17642 | } | |
17643 | ||
eb77c9df AB |
17644 | /* Allocate an integer type of size BITS and name NAME. */ |
17645 | ||
17646 | static struct type * | |
17647 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17648 | int bits, int unsigned_p, const char *name) | |
17649 | { | |
17650 | struct type *type; | |
17651 | ||
17652 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17653 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17654 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17655 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17656 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17657 | type = objfile_type (objfile)->builtin_void; |
17658 | else | |
17659 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17660 | ||
17661 | return type; | |
17662 | } | |
17663 | ||
8bdc1658 AB |
17664 | /* Initialise and return a floating point type of size BITS suitable for |
17665 | use as a component of a complex number. The NAME_HINT is passed through | |
17666 | when initialising the floating point type and is the name of the complex | |
17667 | type. | |
17668 | ||
17669 | As DWARF doesn't currently provide an explicit name for the components | |
17670 | of a complex number, but it can be helpful to have these components | |
17671 | named, we try to select a suitable name based on the size of the | |
17672 | component. */ | |
17673 | static struct type * | |
17674 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17675 | struct objfile *objfile, | |
103a685e TT |
17676 | int bits, const char *name_hint, |
17677 | enum bfd_endian byte_order) | |
8bdc1658 AB |
17678 | { |
17679 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
17680 | struct type *tt = nullptr; | |
17681 | ||
35add35e AB |
17682 | /* Try to find a suitable floating point builtin type of size BITS. |
17683 | We're going to use the name of this type as the name for the complex | |
17684 | target type that we are about to create. */ | |
1db455a7 | 17685 | switch (cu->language) |
8bdc1658 | 17686 | { |
1db455a7 AB |
17687 | case language_fortran: |
17688 | switch (bits) | |
17689 | { | |
17690 | case 32: | |
17691 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17692 | break; | |
17693 | case 64: | |
17694 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17695 | break; | |
17696 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17697 | case 128: | |
17698 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17699 | break; | |
17700 | } | |
8bdc1658 | 17701 | break; |
1db455a7 AB |
17702 | default: |
17703 | switch (bits) | |
17704 | { | |
17705 | case 32: | |
17706 | tt = builtin_type (gdbarch)->builtin_float; | |
17707 | break; | |
17708 | case 64: | |
17709 | tt = builtin_type (gdbarch)->builtin_double; | |
17710 | break; | |
17711 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17712 | case 128: | |
17713 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17714 | break; | |
17715 | } | |
8bdc1658 AB |
17716 | break; |
17717 | } | |
17718 | ||
35add35e AB |
17719 | /* If the type we found doesn't match the size we were looking for, then |
17720 | pretend we didn't find a type at all, the complex target type we | |
17721 | create will then be nameless. */ | |
a12e5744 | 17722 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17723 | tt = nullptr; |
17724 | ||
8bdc1658 | 17725 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 17726 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17727 | } |
17728 | ||
c906108c SS |
17729 | /* Find a representation of a given base type and install |
17730 | it in the TYPE field of the die. */ | |
17731 | ||
f792889a | 17732 | static struct type * |
e7c27a73 | 17733 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17734 | { |
518817b3 | 17735 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17736 | struct type *type; |
17737 | struct attribute *attr; | |
19f392bc | 17738 | int encoding = 0, bits = 0; |
15d034d0 | 17739 | const char *name; |
34877895 | 17740 | gdbarch *arch; |
c906108c | 17741 | |
e142c38c | 17742 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17743 | if (attr != nullptr) |
34877895 | 17744 | encoding = DW_UNSND (attr); |
e142c38c | 17745 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17746 | if (attr != nullptr) |
34877895 | 17747 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17748 | name = dwarf2_name (die, cu); |
6ccb9162 | 17749 | if (!name) |
34877895 | 17750 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
17751 | |
17752 | arch = get_objfile_arch (objfile); | |
17753 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
17754 | ||
34877895 PJ |
17755 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17756 | if (attr) | |
103a685e TT |
17757 | { |
17758 | int endianity = DW_UNSND (attr); | |
17759 | ||
17760 | switch (endianity) | |
17761 | { | |
17762 | case DW_END_big: | |
17763 | byte_order = BFD_ENDIAN_BIG; | |
17764 | break; | |
17765 | case DW_END_little: | |
17766 | byte_order = BFD_ENDIAN_LITTLE; | |
17767 | break; | |
17768 | default: | |
17769 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17770 | break; | |
17771 | } | |
17772 | } | |
6ccb9162 UW |
17773 | |
17774 | switch (encoding) | |
c906108c | 17775 | { |
6ccb9162 UW |
17776 | case DW_ATE_address: |
17777 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17778 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17779 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17780 | break; |
17781 | case DW_ATE_boolean: | |
19f392bc | 17782 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17783 | break; |
17784 | case DW_ATE_complex_float: | |
103a685e TT |
17785 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17786 | byte_order); | |
19f392bc | 17787 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17788 | break; |
17789 | case DW_ATE_decimal_float: | |
19f392bc | 17790 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17791 | break; |
17792 | case DW_ATE_float: | |
103a685e | 17793 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17794 | break; |
17795 | case DW_ATE_signed: | |
eb77c9df | 17796 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17797 | break; |
17798 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17799 | if (cu->language == language_fortran |
17800 | && name | |
61012eef | 17801 | && startswith (name, "character(")) |
19f392bc UW |
17802 | type = init_character_type (objfile, bits, 1, name); |
17803 | else | |
eb77c9df | 17804 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17805 | break; |
17806 | case DW_ATE_signed_char: | |
6e70227d | 17807 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17808 | || cu->language == language_pascal |
17809 | || cu->language == language_fortran) | |
19f392bc UW |
17810 | type = init_character_type (objfile, bits, 0, name); |
17811 | else | |
eb77c9df | 17812 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17813 | break; |
17814 | case DW_ATE_unsigned_char: | |
868a0084 | 17815 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17816 | || cu->language == language_pascal |
c44af4eb TT |
17817 | || cu->language == language_fortran |
17818 | || cu->language == language_rust) | |
19f392bc UW |
17819 | type = init_character_type (objfile, bits, 1, name); |
17820 | else | |
eb77c9df | 17821 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17822 | break; |
75079b2b | 17823 | case DW_ATE_UTF: |
53e710ac | 17824 | { |
53e710ac PA |
17825 | if (bits == 16) |
17826 | type = builtin_type (arch)->builtin_char16; | |
17827 | else if (bits == 32) | |
17828 | type = builtin_type (arch)->builtin_char32; | |
17829 | else | |
17830 | { | |
b98664d3 | 17831 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17832 | bits); |
eb77c9df | 17833 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17834 | } |
17835 | return set_die_type (die, type, cu); | |
17836 | } | |
75079b2b TT |
17837 | break; |
17838 | ||
6ccb9162 | 17839 | default: |
b98664d3 | 17840 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17841 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17842 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17843 | break; |
c906108c | 17844 | } |
6ccb9162 | 17845 | |
0114d602 | 17846 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17847 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17848 | |
2b4424c3 TT |
17849 | maybe_set_alignment (cu, die, type); |
17850 | ||
103a685e | 17851 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17852 | |
f792889a | 17853 | return set_die_type (die, type, cu); |
c906108c SS |
17854 | } |
17855 | ||
80180f79 SA |
17856 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17857 | resulting value of the attribute into struct bound_prop. | |
17858 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17859 | ||
17860 | static int | |
17861 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17862 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17863 | struct type *default_type) | |
80180f79 SA |
17864 | { |
17865 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17866 | struct obstack *obstack |
17867 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17868 | |
9a49df9d AB |
17869 | gdb_assert (default_type != NULL); |
17870 | ||
80180f79 SA |
17871 | if (attr == NULL || prop == NULL) |
17872 | return 0; | |
17873 | ||
17874 | if (attr_form_is_block (attr)) | |
17875 | { | |
8d749320 | 17876 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17877 | baton->property_type = default_type; |
80180f79 SA |
17878 | baton->locexpr.per_cu = cu->per_cu; |
17879 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17880 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17881 | switch (attr->name) |
17882 | { | |
17883 | case DW_AT_string_length: | |
17884 | baton->locexpr.is_reference = true; | |
17885 | break; | |
17886 | default: | |
17887 | baton->locexpr.is_reference = false; | |
17888 | break; | |
17889 | } | |
80180f79 SA |
17890 | prop->data.baton = baton; |
17891 | prop->kind = PROP_LOCEXPR; | |
17892 | gdb_assert (prop->data.baton != NULL); | |
17893 | } | |
17894 | else if (attr_form_is_ref (attr)) | |
17895 | { | |
17896 | struct dwarf2_cu *target_cu = cu; | |
17897 | struct die_info *target_die; | |
17898 | struct attribute *target_attr; | |
17899 | ||
17900 | target_die = follow_die_ref (die, attr, &target_cu); | |
17901 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17902 | if (target_attr == NULL) |
17903 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17904 | target_cu); | |
80180f79 SA |
17905 | if (target_attr == NULL) |
17906 | return 0; | |
17907 | ||
df25ebbd | 17908 | switch (target_attr->name) |
80180f79 | 17909 | { |
df25ebbd JB |
17910 | case DW_AT_location: |
17911 | if (attr_form_is_section_offset (target_attr)) | |
17912 | { | |
8d749320 | 17913 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17914 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17915 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17916 | prop->data.baton = baton; | |
17917 | prop->kind = PROP_LOCLIST; | |
17918 | gdb_assert (prop->data.baton != NULL); | |
17919 | } | |
17920 | else if (attr_form_is_block (target_attr)) | |
17921 | { | |
8d749320 | 17922 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17923 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17924 | baton->locexpr.per_cu = cu->per_cu; |
17925 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17926 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17927 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17928 | prop->data.baton = baton; |
17929 | prop->kind = PROP_LOCEXPR; | |
17930 | gdb_assert (prop->data.baton != NULL); | |
17931 | } | |
17932 | else | |
17933 | { | |
17934 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17935 | "dynamic property"); | |
17936 | return 0; | |
17937 | } | |
17938 | break; | |
17939 | case DW_AT_data_member_location: | |
17940 | { | |
17941 | LONGEST offset; | |
17942 | ||
17943 | if (!handle_data_member_location (target_die, target_cu, | |
17944 | &offset)) | |
17945 | return 0; | |
17946 | ||
8d749320 | 17947 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17948 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17949 | target_cu); |
df25ebbd JB |
17950 | baton->offset_info.offset = offset; |
17951 | baton->offset_info.type = die_type (target_die, target_cu); | |
17952 | prop->data.baton = baton; | |
17953 | prop->kind = PROP_ADDR_OFFSET; | |
17954 | break; | |
17955 | } | |
80180f79 SA |
17956 | } |
17957 | } | |
17958 | else if (attr_form_is_constant (attr)) | |
17959 | { | |
17960 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17961 | prop->kind = PROP_CONST; | |
17962 | } | |
17963 | else | |
17964 | { | |
17965 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17966 | dwarf2_name (die, cu)); | |
17967 | return 0; | |
17968 | } | |
17969 | ||
17970 | return 1; | |
17971 | } | |
17972 | ||
11a8b164 AB |
17973 | /* Find an integer type SIZE_IN_BYTES bytes in size and return it. |
17974 | UNSIGNED_P controls if the integer is unsigned or not. */ | |
9a49df9d AB |
17975 | |
17976 | static struct type * | |
11a8b164 AB |
17977 | dwarf2_per_cu_int_type (struct dwarf2_per_cu_data *per_cu, |
17978 | int size_in_bytes, bool unsigned_p) | |
9a49df9d AB |
17979 | { |
17980 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
9a49df9d AB |
17981 | struct type *int_type; |
17982 | ||
17983 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17984 | #define TRY_TYPE(F) \ |
17985 | int_type = (unsigned_p \ | |
17986 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17987 | : objfile_type (objfile)->builtin_ ## F); \ | |
17988 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17989 | return int_type |
17990 | ||
17991 | TRY_TYPE (char); | |
17992 | TRY_TYPE (short); | |
17993 | TRY_TYPE (int); | |
17994 | TRY_TYPE (long); | |
17995 | TRY_TYPE (long_long); | |
17996 | ||
17997 | #undef TRY_TYPE | |
17998 | ||
17999 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18000 | } | |
18001 | ||
11a8b164 AB |
18002 | /* Find an integer type the same size as the address size given in the |
18003 | compilation unit header for PER_CU. UNSIGNED_P controls if the integer | |
18004 | is unsigned or not. */ | |
18005 | ||
18006 | static struct type * | |
18007 | dwarf2_per_cu_addr_sized_int_type (struct dwarf2_per_cu_data *per_cu, | |
18008 | bool unsigned_p) | |
18009 | { | |
18010 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
18011 | return dwarf2_per_cu_int_type (per_cu, addr_size, unsigned_p); | |
18012 | } | |
18013 | ||
b86352cf AB |
18014 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18015 | present (which is valid) then compute the default type based on the | |
18016 | compilation units address size. */ | |
18017 | ||
18018 | static struct type * | |
18019 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18020 | { | |
18021 | struct type *index_type = die_type (die, cu); | |
18022 | ||
18023 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18024 | without specifying a base type. | |
18025 | In that case, the base type must be set to the type of | |
18026 | the lower bound, upper bound or count, in that order, if any of these | |
18027 | three attributes references an object that has a type. | |
18028 | If no base type is found, the Dwarf-2 specifications say that | |
18029 | a signed integer type of size equal to the size of an address should | |
18030 | be used. | |
18031 | For the following C code: `extern char gdb_int [];' | |
18032 | GCC produces an empty range DIE. | |
18033 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18034 | high bound or count are not yet handled by this code. */ | |
18035 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
9a49df9d | 18036 | index_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); |
b86352cf AB |
18037 | |
18038 | return index_type; | |
18039 | } | |
18040 | ||
a02abb62 JB |
18041 | /* Read the given DW_AT_subrange DIE. */ |
18042 | ||
f792889a | 18043 | static struct type * |
a02abb62 JB |
18044 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18045 | { | |
4c9ad8c2 | 18046 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18047 | struct type *range_type; |
18048 | struct attribute *attr; | |
729efb13 | 18049 | struct dynamic_prop low, high; |
4fae6e18 | 18050 | int low_default_is_valid; |
c451ebe5 | 18051 | int high_bound_is_count = 0; |
15d034d0 | 18052 | const char *name; |
d359392f | 18053 | ULONGEST negative_mask; |
e77813c8 | 18054 | |
b86352cf AB |
18055 | orig_base_type = read_subrange_index_type (die, cu); |
18056 | ||
4c9ad8c2 TT |
18057 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18058 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18059 | creating the range type, but we use the result of check_typedef | |
18060 | when examining properties of the type. */ | |
18061 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18062 | |
7e314c57 JK |
18063 | /* The die_type call above may have already set the type for this DIE. */ |
18064 | range_type = get_die_type (die, cu); | |
18065 | if (range_type) | |
18066 | return range_type; | |
18067 | ||
729efb13 SA |
18068 | low.kind = PROP_CONST; |
18069 | high.kind = PROP_CONST; | |
18070 | high.data.const_val = 0; | |
18071 | ||
4fae6e18 JK |
18072 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18073 | omitting DW_AT_lower_bound. */ | |
18074 | switch (cu->language) | |
6e70227d | 18075 | { |
4fae6e18 JK |
18076 | case language_c: |
18077 | case language_cplus: | |
729efb13 | 18078 | low.data.const_val = 0; |
4fae6e18 JK |
18079 | low_default_is_valid = 1; |
18080 | break; | |
18081 | case language_fortran: | |
729efb13 | 18082 | low.data.const_val = 1; |
4fae6e18 JK |
18083 | low_default_is_valid = 1; |
18084 | break; | |
18085 | case language_d: | |
4fae6e18 | 18086 | case language_objc: |
c44af4eb | 18087 | case language_rust: |
729efb13 | 18088 | low.data.const_val = 0; |
4fae6e18 JK |
18089 | low_default_is_valid = (cu->header.version >= 4); |
18090 | break; | |
18091 | case language_ada: | |
18092 | case language_m2: | |
18093 | case language_pascal: | |
729efb13 | 18094 | low.data.const_val = 1; |
4fae6e18 JK |
18095 | low_default_is_valid = (cu->header.version >= 4); |
18096 | break; | |
18097 | default: | |
729efb13 | 18098 | low.data.const_val = 0; |
4fae6e18 JK |
18099 | low_default_is_valid = 0; |
18100 | break; | |
a02abb62 JB |
18101 | } |
18102 | ||
e142c38c | 18103 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18104 | if (attr != nullptr) |
9a49df9d | 18105 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18106 | else if (!low_default_is_valid) |
b98664d3 | 18107 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18108 | "- DIE at %s [in module %s]"), |
18109 | sect_offset_str (die->sect_off), | |
518817b3 | 18110 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 18111 | |
506f5c41 TV |
18112 | struct attribute *attr_ub, *attr_count; |
18113 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18114 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18115 | { |
506f5c41 | 18116 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18117 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18118 | { |
c451ebe5 SA |
18119 | /* If bounds are constant do the final calculation here. */ |
18120 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
18121 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
18122 | else | |
18123 | high_bound_is_count = 1; | |
c2ff108b | 18124 | } |
506f5c41 TV |
18125 | else |
18126 | { | |
18127 | if (attr_ub != NULL) | |
18128 | complaint (_("Unresolved DW_AT_upper_bound " | |
18129 | "- DIE at %s [in module %s]"), | |
18130 | sect_offset_str (die->sect_off), | |
18131 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
18132 | if (attr_count != NULL) | |
18133 | complaint (_("Unresolved DW_AT_count " | |
18134 | "- DIE at %s [in module %s]"), | |
18135 | sect_offset_str (die->sect_off), | |
18136 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
18137 | } | |
e77813c8 | 18138 | } |
a02abb62 | 18139 | |
4e962e74 TT |
18140 | LONGEST bias = 0; |
18141 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
18142 | if (bias_attr != nullptr && attr_form_is_constant (bias_attr)) | |
18143 | bias = dwarf2_get_attr_constant_value (bias_attr, 0); | |
18144 | ||
dbb9c2b1 JB |
18145 | /* Normally, the DWARF producers are expected to use a signed |
18146 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18147 | But this is unfortunately not always the case, as witnessed | |
18148 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18149 | is used instead. To work around that ambiguity, we treat | |
18150 | the bounds as signed, and thus sign-extend their values, when | |
18151 | the base type is signed. */ | |
6e70227d | 18152 | negative_mask = |
d359392f | 18153 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
18154 | if (low.kind == PROP_CONST |
18155 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
18156 | low.data.const_val |= negative_mask; | |
18157 | if (high.kind == PROP_CONST | |
18158 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
18159 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 18160 | |
5bbd8269 AB |
18161 | /* Check for bit and byte strides. */ |
18162 | struct dynamic_prop byte_stride_prop; | |
18163 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18164 | if (attr_byte_stride != nullptr) | |
18165 | { | |
18166 | struct type *prop_type | |
18167 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
18168 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, | |
18169 | prop_type); | |
18170 | } | |
18171 | ||
18172 | struct dynamic_prop bit_stride_prop; | |
18173 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18174 | if (attr_bit_stride != nullptr) | |
18175 | { | |
18176 | /* It only makes sense to have either a bit or byte stride. */ | |
18177 | if (attr_byte_stride != nullptr) | |
18178 | { | |
18179 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18180 | "- DIE at %s [in module %s]"), | |
18181 | sect_offset_str (die->sect_off), | |
18182 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
18183 | attr_bit_stride = nullptr; | |
18184 | } | |
18185 | else | |
18186 | { | |
18187 | struct type *prop_type | |
18188 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
18189 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, | |
18190 | prop_type); | |
18191 | } | |
18192 | } | |
18193 | ||
18194 | if (attr_byte_stride != nullptr | |
18195 | || attr_bit_stride != nullptr) | |
18196 | { | |
18197 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18198 | struct dynamic_prop *stride | |
18199 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18200 | ||
18201 | range_type | |
18202 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18203 | &high, bias, stride, byte_stride_p); | |
18204 | } | |
18205 | else | |
18206 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18207 | |
c451ebe5 SA |
18208 | if (high_bound_is_count) |
18209 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
18210 | ||
c2ff108b JK |
18211 | /* Ada expects an empty array on no boundary attributes. */ |
18212 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 18213 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 18214 | |
39cbfefa DJ |
18215 | name = dwarf2_name (die, cu); |
18216 | if (name) | |
18217 | TYPE_NAME (range_type) = name; | |
6e70227d | 18218 | |
e142c38c | 18219 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18220 | if (attr != nullptr) |
a02abb62 JB |
18221 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
18222 | ||
2b4424c3 TT |
18223 | maybe_set_alignment (cu, die, range_type); |
18224 | ||
7e314c57 JK |
18225 | set_die_type (die, range_type, cu); |
18226 | ||
18227 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18228 | set_descriptive_type (range_type, die, cu); |
18229 | ||
7e314c57 | 18230 | return range_type; |
a02abb62 | 18231 | } |
6e70227d | 18232 | |
f792889a | 18233 | static struct type * |
81a17f79 JB |
18234 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18235 | { | |
18236 | struct type *type; | |
81a17f79 | 18237 | |
518817b3 SM |
18238 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
18239 | NULL); | |
0114d602 | 18240 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 18241 | |
74a2f8ff | 18242 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18243 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18244 | such a type, we treat it as a stub, and try to resolve it later on, |
18245 | when needed. */ | |
18246 | if (cu->language == language_ada) | |
18247 | TYPE_STUB (type) = 1; | |
18248 | ||
f792889a | 18249 | return set_die_type (die, type, cu); |
81a17f79 | 18250 | } |
a02abb62 | 18251 | |
639d11d3 DC |
18252 | /* Read a single die and all its descendents. Set the die's sibling |
18253 | field to NULL; set other fields in the die correctly, and set all | |
18254 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18255 | location of the info_ptr after reading all of those dies. PARENT | |
18256 | is the parent of the die in question. */ | |
18257 | ||
18258 | static struct die_info * | |
dee91e82 | 18259 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18260 | const gdb_byte *info_ptr, |
18261 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18262 | struct die_info *parent) |
639d11d3 DC |
18263 | { |
18264 | struct die_info *die; | |
d521ce57 | 18265 | const gdb_byte *cur_ptr; |
639d11d3 DC |
18266 | int has_children; |
18267 | ||
bf6af496 | 18268 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
18269 | if (die == NULL) |
18270 | { | |
18271 | *new_info_ptr = cur_ptr; | |
18272 | return NULL; | |
18273 | } | |
93311388 | 18274 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
18275 | |
18276 | if (has_children) | |
bf6af496 | 18277 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18278 | else |
18279 | { | |
18280 | die->child = NULL; | |
18281 | *new_info_ptr = cur_ptr; | |
18282 | } | |
18283 | ||
18284 | die->sibling = NULL; | |
18285 | die->parent = parent; | |
18286 | return die; | |
18287 | } | |
18288 | ||
18289 | /* Read a die, all of its descendents, and all of its siblings; set | |
18290 | all of the fields of all of the dies correctly. Arguments are as | |
18291 | in read_die_and_children. */ | |
18292 | ||
18293 | static struct die_info * | |
bf6af496 | 18294 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18295 | const gdb_byte *info_ptr, |
18296 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18297 | struct die_info *parent) |
639d11d3 DC |
18298 | { |
18299 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18300 | const gdb_byte *cur_ptr; |
639d11d3 | 18301 | |
c906108c | 18302 | cur_ptr = info_ptr; |
639d11d3 DC |
18303 | first_die = last_sibling = NULL; |
18304 | ||
18305 | while (1) | |
c906108c | 18306 | { |
639d11d3 | 18307 | struct die_info *die |
dee91e82 | 18308 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18309 | |
1d325ec1 | 18310 | if (die == NULL) |
c906108c | 18311 | { |
639d11d3 DC |
18312 | *new_info_ptr = cur_ptr; |
18313 | return first_die; | |
c906108c | 18314 | } |
1d325ec1 DJ |
18315 | |
18316 | if (!first_die) | |
18317 | first_die = die; | |
c906108c | 18318 | else |
1d325ec1 DJ |
18319 | last_sibling->sibling = die; |
18320 | ||
18321 | last_sibling = die; | |
c906108c | 18322 | } |
c906108c SS |
18323 | } |
18324 | ||
bf6af496 DE |
18325 | /* Read a die, all of its descendents, and all of its siblings; set |
18326 | all of the fields of all of the dies correctly. Arguments are as | |
18327 | in read_die_and_children. | |
18328 | This the main entry point for reading a DIE and all its children. */ | |
18329 | ||
18330 | static struct die_info * | |
18331 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18332 | const gdb_byte *info_ptr, |
18333 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18334 | struct die_info *parent) |
18335 | { | |
18336 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18337 | new_info_ptr, parent); | |
18338 | ||
b4f54984 | 18339 | if (dwarf_die_debug) |
bf6af496 DE |
18340 | { |
18341 | fprintf_unfiltered (gdb_stdlog, | |
18342 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18343 | get_section_name (reader->die_section), |
bf6af496 DE |
18344 | (unsigned) (info_ptr - reader->die_section->buffer), |
18345 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18346 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18347 | } |
18348 | ||
18349 | return die; | |
18350 | } | |
18351 | ||
3019eac3 DE |
18352 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18353 | attributes. | |
18354 | The caller is responsible for filling in the extra attributes | |
18355 | and updating (*DIEP)->num_attrs. | |
18356 | Set DIEP to point to a newly allocated die with its information, | |
18357 | except for its child, sibling, and parent fields. | |
18358 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18359 | |
d521ce57 | 18360 | static const gdb_byte * |
3019eac3 | 18361 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18362 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18363 | int *has_children, int num_extra_attrs) |
93311388 | 18364 | { |
b64f50a1 | 18365 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18366 | struct abbrev_info *abbrev; |
18367 | struct die_info *die; | |
18368 | struct dwarf2_cu *cu = reader->cu; | |
18369 | bfd *abfd = reader->abfd; | |
18370 | ||
9c541725 | 18371 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18372 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18373 | info_ptr += bytes_read; | |
18374 | if (!abbrev_number) | |
18375 | { | |
18376 | *diep = NULL; | |
18377 | *has_children = 0; | |
18378 | return info_ptr; | |
18379 | } | |
18380 | ||
685af9cd | 18381 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18382 | if (!abbrev) |
348e048f DE |
18383 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18384 | abbrev_number, | |
18385 | bfd_get_filename (abfd)); | |
18386 | ||
3019eac3 | 18387 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18388 | die->sect_off = sect_off; |
93311388 DE |
18389 | die->tag = abbrev->tag; |
18390 | die->abbrev = abbrev_number; | |
18391 | ||
3019eac3 DE |
18392 | /* Make the result usable. |
18393 | The caller needs to update num_attrs after adding the extra | |
18394 | attributes. */ | |
93311388 DE |
18395 | die->num_attrs = abbrev->num_attrs; |
18396 | ||
18a8505e | 18397 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18398 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18399 | { |
18400 | bool need_reprocess; | |
18401 | info_ptr = | |
18402 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18403 | info_ptr, &need_reprocess); | |
18404 | if (need_reprocess) | |
18405 | indexes_that_need_reprocess.push_back (i); | |
18406 | } | |
18407 | ||
18408 | struct attribute *attr = dwarf2_attr_no_follow (die, DW_AT_str_offsets_base); | |
18409 | if (attr != nullptr) | |
18410 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18411 | |
18a8505e AT |
18412 | auto maybe_addr_base = lookup_addr_base(die); |
18413 | if (maybe_addr_base.has_value ()) | |
18414 | cu->addr_base = *maybe_addr_base; | |
18415 | for (int index : indexes_that_need_reprocess) | |
18416 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 DE |
18417 | *diep = die; |
18418 | *has_children = abbrev->has_children; | |
18419 | return info_ptr; | |
18420 | } | |
18421 | ||
3019eac3 DE |
18422 | /* Read a die and all its attributes. |
18423 | Set DIEP to point to a newly allocated die with its information, | |
18424 | except for its child, sibling, and parent fields. | |
18425 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18426 | ||
d521ce57 | 18427 | static const gdb_byte * |
3019eac3 | 18428 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18429 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18430 | int *has_children) |
18431 | { | |
d521ce57 | 18432 | const gdb_byte *result; |
bf6af496 DE |
18433 | |
18434 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18435 | ||
b4f54984 | 18436 | if (dwarf_die_debug) |
bf6af496 DE |
18437 | { |
18438 | fprintf_unfiltered (gdb_stdlog, | |
18439 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18440 | get_section_name (reader->die_section), |
bf6af496 DE |
18441 | (unsigned) (info_ptr - reader->die_section->buffer), |
18442 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18443 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18444 | } |
18445 | ||
18446 | return result; | |
3019eac3 | 18447 | } |
433df2d4 DE |
18448 | \f |
18449 | /* Abbreviation tables. | |
3019eac3 | 18450 | |
433df2d4 | 18451 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18452 | stored in a separate .debug_abbrev section. Before we read any |
18453 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18454 | in a hash table. */ |
18455 | ||
18456 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18457 | ||
685af9cd TT |
18458 | struct abbrev_info * |
18459 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18460 | { |
18461 | struct abbrev_info *abbrev; | |
18462 | ||
685af9cd | 18463 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18464 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18465 | |
433df2d4 DE |
18466 | return abbrev; |
18467 | } | |
18468 | ||
18469 | /* Add an abbreviation to the table. */ | |
c906108c | 18470 | |
685af9cd TT |
18471 | void |
18472 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18473 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18474 | { |
18475 | unsigned int hash_number; | |
18476 | ||
18477 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18478 | abbrev->next = m_abbrevs[hash_number]; |
18479 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18480 | } |
dee91e82 | 18481 | |
433df2d4 DE |
18482 | /* Look up an abbrev in the table. |
18483 | Returns NULL if the abbrev is not found. */ | |
18484 | ||
685af9cd TT |
18485 | struct abbrev_info * |
18486 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18487 | { |
433df2d4 DE |
18488 | unsigned int hash_number; |
18489 | struct abbrev_info *abbrev; | |
18490 | ||
18491 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18492 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18493 | |
18494 | while (abbrev) | |
18495 | { | |
18496 | if (abbrev->number == abbrev_number) | |
18497 | return abbrev; | |
18498 | abbrev = abbrev->next; | |
18499 | } | |
18500 | return NULL; | |
18501 | } | |
18502 | ||
18503 | /* Read in an abbrev table. */ | |
18504 | ||
685af9cd | 18505 | static abbrev_table_up |
ed2dc618 SM |
18506 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18507 | struct dwarf2_section_info *section, | |
9c541725 | 18508 | sect_offset sect_off) |
433df2d4 DE |
18509 | { |
18510 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18511 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18512 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18513 | struct abbrev_info *cur_abbrev; |
18514 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18515 | unsigned int abbrev_form; |
6dfa2fc2 | 18516 | std::vector<struct attr_abbrev> cur_attrs; |
c906108c | 18517 | |
685af9cd | 18518 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18519 | |
433df2d4 | 18520 | dwarf2_read_section (objfile, section); |
9c541725 | 18521 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18522 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18523 | abbrev_ptr += bytes_read; | |
18524 | ||
0963b4bd | 18525 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18526 | while (abbrev_number) |
18527 | { | |
6dfa2fc2 | 18528 | cur_attrs.clear (); |
685af9cd | 18529 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18530 | |
18531 | /* read in abbrev header */ | |
18532 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18533 | cur_abbrev->tag |
18534 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18535 | abbrev_ptr += bytes_read; |
18536 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18537 | abbrev_ptr += 1; | |
18538 | ||
18539 | /* now read in declarations */ | |
22d2f3ab | 18540 | for (;;) |
c906108c | 18541 | { |
43988095 JK |
18542 | LONGEST implicit_const; |
18543 | ||
22d2f3ab JK |
18544 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18545 | abbrev_ptr += bytes_read; | |
18546 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18547 | abbrev_ptr += bytes_read; | |
43988095 JK |
18548 | if (abbrev_form == DW_FORM_implicit_const) |
18549 | { | |
18550 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18551 | &bytes_read); | |
18552 | abbrev_ptr += bytes_read; | |
18553 | } | |
18554 | else | |
18555 | { | |
18556 | /* Initialize it due to a false compiler warning. */ | |
18557 | implicit_const = -1; | |
18558 | } | |
22d2f3ab JK |
18559 | |
18560 | if (abbrev_name == 0) | |
18561 | break; | |
18562 | ||
6dfa2fc2 TT |
18563 | cur_attrs.emplace_back (); |
18564 | struct attr_abbrev &cur_attr = cur_attrs.back (); | |
18565 | cur_attr.name = (enum dwarf_attribute) abbrev_name; | |
18566 | cur_attr.form = (enum dwarf_form) abbrev_form; | |
18567 | cur_attr.implicit_const = implicit_const; | |
22d2f3ab | 18568 | ++cur_abbrev->num_attrs; |
c906108c SS |
18569 | } |
18570 | ||
8d749320 SM |
18571 | cur_abbrev->attrs = |
18572 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18573 | cur_abbrev->num_attrs); | |
6dfa2fc2 | 18574 | memcpy (cur_abbrev->attrs, cur_attrs.data (), |
f3dd6933 DJ |
18575 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); |
18576 | ||
685af9cd | 18577 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18578 | |
18579 | /* Get next abbreviation. | |
18580 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18581 | always properly terminated with an abbrev number of 0. |
18582 | Exit loop if we encounter an abbreviation which we have | |
18583 | already read (which means we are about to read the abbreviations | |
18584 | for the next compile unit) or if the end of the abbreviation | |
18585 | table is reached. */ | |
433df2d4 | 18586 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18587 | break; |
18588 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18589 | abbrev_ptr += bytes_read; | |
685af9cd | 18590 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18591 | break; |
18592 | } | |
f3dd6933 | 18593 | |
433df2d4 | 18594 | return abbrev_table; |
c906108c SS |
18595 | } |
18596 | ||
72bf9492 DJ |
18597 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18598 | symbol for. */ | |
18599 | ||
18600 | static int | |
18601 | is_type_tag_for_partial (int tag) | |
18602 | { | |
18603 | switch (tag) | |
18604 | { | |
18605 | #if 0 | |
18606 | /* Some types that would be reasonable to generate partial symbols for, | |
18607 | that we don't at present. */ | |
18608 | case DW_TAG_array_type: | |
18609 | case DW_TAG_file_type: | |
18610 | case DW_TAG_ptr_to_member_type: | |
18611 | case DW_TAG_set_type: | |
18612 | case DW_TAG_string_type: | |
18613 | case DW_TAG_subroutine_type: | |
18614 | #endif | |
18615 | case DW_TAG_base_type: | |
18616 | case DW_TAG_class_type: | |
680b30c7 | 18617 | case DW_TAG_interface_type: |
72bf9492 DJ |
18618 | case DW_TAG_enumeration_type: |
18619 | case DW_TAG_structure_type: | |
18620 | case DW_TAG_subrange_type: | |
18621 | case DW_TAG_typedef: | |
18622 | case DW_TAG_union_type: | |
18623 | return 1; | |
18624 | default: | |
18625 | return 0; | |
18626 | } | |
18627 | } | |
18628 | ||
18629 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18630 | ||
18631 | static struct partial_die_info * | |
dee91e82 | 18632 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18633 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18634 | { |
dee91e82 | 18635 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18636 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18637 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18638 | unsigned int bytes_read; |
5afb4e99 | 18639 | unsigned int load_all = 0; |
72bf9492 DJ |
18640 | int nesting_level = 1; |
18641 | ||
18642 | parent_die = NULL; | |
18643 | last_die = NULL; | |
18644 | ||
7adf1e79 DE |
18645 | gdb_assert (cu->per_cu != NULL); |
18646 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18647 | load_all = 1; |
18648 | ||
72bf9492 DJ |
18649 | cu->partial_dies |
18650 | = htab_create_alloc_ex (cu->header.length / 12, | |
18651 | partial_die_hash, | |
18652 | partial_die_eq, | |
18653 | NULL, | |
18654 | &cu->comp_unit_obstack, | |
18655 | hashtab_obstack_allocate, | |
18656 | dummy_obstack_deallocate); | |
18657 | ||
72bf9492 DJ |
18658 | while (1) |
18659 | { | |
685af9cd | 18660 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18661 | |
18662 | /* A NULL abbrev means the end of a series of children. */ | |
18663 | if (abbrev == NULL) | |
18664 | { | |
18665 | if (--nesting_level == 0) | |
cd9983dd YQ |
18666 | return first_die; |
18667 | ||
72bf9492 DJ |
18668 | info_ptr += bytes_read; |
18669 | last_die = parent_die; | |
18670 | parent_die = parent_die->die_parent; | |
18671 | continue; | |
18672 | } | |
18673 | ||
98bfdba5 PA |
18674 | /* Check for template arguments. We never save these; if |
18675 | they're seen, we just mark the parent, and go on our way. */ | |
18676 | if (parent_die != NULL | |
18677 | && cu->language == language_cplus | |
18678 | && (abbrev->tag == DW_TAG_template_type_param | |
18679 | || abbrev->tag == DW_TAG_template_value_param)) | |
18680 | { | |
18681 | parent_die->has_template_arguments = 1; | |
18682 | ||
18683 | if (!load_all) | |
18684 | { | |
18685 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18686 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18687 | continue; |
18688 | } | |
18689 | } | |
18690 | ||
0d99eb77 | 18691 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18692 | Skip their other children. */ |
18693 | if (!load_all | |
18694 | && cu->language == language_cplus | |
18695 | && parent_die != NULL | |
18696 | && parent_die->tag == DW_TAG_subprogram) | |
18697 | { | |
dee91e82 | 18698 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18699 | continue; |
18700 | } | |
18701 | ||
5afb4e99 DJ |
18702 | /* Check whether this DIE is interesting enough to save. Normally |
18703 | we would not be interested in members here, but there may be | |
18704 | later variables referencing them via DW_AT_specification (for | |
18705 | static members). */ | |
18706 | if (!load_all | |
18707 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18708 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18709 | && abbrev->tag != DW_TAG_enumerator |
18710 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18711 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18712 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18713 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18714 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18715 | && abbrev->tag != DW_TAG_module |
95554aad | 18716 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18717 | && abbrev->tag != DW_TAG_imported_unit |
18718 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18719 | { |
18720 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18721 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18722 | continue; |
18723 | } | |
18724 | ||
6f06d47b YQ |
18725 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18726 | abbrev); | |
cd9983dd | 18727 | |
48fbe735 | 18728 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18729 | |
18730 | /* This two-pass algorithm for processing partial symbols has a | |
18731 | high cost in cache pressure. Thus, handle some simple cases | |
18732 | here which cover the majority of C partial symbols. DIEs | |
18733 | which neither have specification tags in them, nor could have | |
18734 | specification tags elsewhere pointing at them, can simply be | |
18735 | processed and discarded. | |
18736 | ||
18737 | This segment is also optional; scan_partial_symbols and | |
18738 | add_partial_symbol will handle these DIEs if we chain | |
18739 | them in normally. When compilers which do not emit large | |
18740 | quantities of duplicate debug information are more common, | |
18741 | this code can probably be removed. */ | |
18742 | ||
18743 | /* Any complete simple types at the top level (pretty much all | |
18744 | of them, for a language without namespaces), can be processed | |
18745 | directly. */ | |
18746 | if (parent_die == NULL | |
cd9983dd YQ |
18747 | && pdi.has_specification == 0 |
18748 | && pdi.is_declaration == 0 | |
18749 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18750 | || pdi.tag == DW_TAG_base_type | |
18751 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18752 | { |
cd9983dd | 18753 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18754 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18755 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18756 | psymbol_placement::STATIC, |
1762568f | 18757 | 0, cu->language, objfile); |
cd9983dd | 18758 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18759 | continue; |
18760 | } | |
18761 | ||
d8228535 JK |
18762 | /* The exception for DW_TAG_typedef with has_children above is |
18763 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18764 | type_name_or_error will error on such types later. |
d8228535 JK |
18765 | |
18766 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18767 | it could not find the child DIEs referenced later, this is checked | |
18768 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18769 | ||
cd9983dd | 18770 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18771 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18772 | "- DIE at %s [in module %s]"), |
cd9983dd | 18773 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18774 | |
72bf9492 DJ |
18775 | /* If we're at the second level, and we're an enumerator, and |
18776 | our parent has no specification (meaning possibly lives in a | |
18777 | namespace elsewhere), then we can add the partial symbol now | |
18778 | instead of queueing it. */ | |
cd9983dd | 18779 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18780 | && parent_die != NULL |
18781 | && parent_die->die_parent == NULL | |
18782 | && parent_die->tag == DW_TAG_enumeration_type | |
18783 | && parent_die->has_specification == 0) | |
18784 | { | |
cd9983dd | 18785 | if (pdi.name == NULL) |
b98664d3 | 18786 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18787 | else if (building_psymtab) |
31edb802 | 18788 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18789 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18790 | cu->language == language_cplus |
75aedd27 TT |
18791 | ? psymbol_placement::GLOBAL |
18792 | : psymbol_placement::STATIC, | |
1762568f | 18793 | 0, cu->language, objfile); |
72bf9492 | 18794 | |
cd9983dd | 18795 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18796 | continue; |
18797 | } | |
18798 | ||
cd9983dd | 18799 | struct partial_die_info *part_die |
6f06d47b | 18800 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18801 | |
72bf9492 DJ |
18802 | /* We'll save this DIE so link it in. */ |
18803 | part_die->die_parent = parent_die; | |
18804 | part_die->die_sibling = NULL; | |
18805 | part_die->die_child = NULL; | |
18806 | ||
18807 | if (last_die && last_die == parent_die) | |
18808 | last_die->die_child = part_die; | |
18809 | else if (last_die) | |
18810 | last_die->die_sibling = part_die; | |
18811 | ||
18812 | last_die = part_die; | |
18813 | ||
18814 | if (first_die == NULL) | |
18815 | first_die = part_die; | |
18816 | ||
18817 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18818 | find interesting need to be in the hash table, because we | |
18819 | also have the parent/sibling/child chains; only those that we | |
18820 | might refer to by offset later during partial symbol reading. | |
18821 | ||
18822 | For now this means things that might have be the target of a | |
18823 | DW_AT_specification, DW_AT_abstract_origin, or | |
18824 | DW_AT_extension. DW_AT_extension will refer only to | |
18825 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18826 | many things under the function DIE, but we do not recurse | |
18827 | into function DIEs during partial symbol reading) and | |
18828 | possibly variables as well; DW_AT_specification refers to | |
18829 | declarations. Declarations ought to have the DW_AT_declaration | |
18830 | flag. It happens that GCC forgets to put it in sometimes, but | |
18831 | only for functions, not for types. | |
18832 | ||
18833 | Adding more things than necessary to the hash table is harmless | |
18834 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18835 | wasted time in find_partial_die, when we reread the compilation |
18836 | unit with load_all_dies set. */ | |
72bf9492 | 18837 | |
5afb4e99 | 18838 | if (load_all |
72929c62 | 18839 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18840 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18841 | || abbrev->tag == DW_TAG_variable |
18842 | || abbrev->tag == DW_TAG_namespace | |
18843 | || part_die->is_declaration) | |
18844 | { | |
18845 | void **slot; | |
18846 | ||
18847 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18848 | to_underlying (part_die->sect_off), |
18849 | INSERT); | |
72bf9492 DJ |
18850 | *slot = part_die; |
18851 | } | |
18852 | ||
72bf9492 | 18853 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18854 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18855 | languages we have to, so that we can get at method physnames |
18856 | to infer fully qualified class names, for DW_AT_specification, | |
18857 | and for C++ template arguments. For C++, we also look one level | |
18858 | inside functions to find template arguments (if the name of the | |
18859 | function does not already contain the template arguments). | |
bc30ff58 | 18860 | |
0a4b0913 AB |
18861 | For Ada and Fortran, we need to scan the children of subprograms |
18862 | and lexical blocks as well because these languages allow the | |
18863 | definition of nested entities that could be interesting for the | |
18864 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18865 | if (last_die->has_children |
5afb4e99 DJ |
18866 | && (load_all |
18867 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18868 | || last_die->tag == DW_TAG_module |
72bf9492 | 18869 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18870 | || (cu->language == language_cplus |
18871 | && last_die->tag == DW_TAG_subprogram | |
18872 | && (last_die->name == NULL | |
18873 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18874 | || (cu->language != language_c |
18875 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18876 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18877 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18878 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18879 | || ((cu->language == language_ada |
18880 | || cu->language == language_fortran) | |
bc30ff58 JB |
18881 | && (last_die->tag == DW_TAG_subprogram |
18882 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18883 | { |
18884 | nesting_level++; | |
18885 | parent_die = last_die; | |
18886 | continue; | |
18887 | } | |
18888 | ||
18889 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18890 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18891 | |
18892 | /* Back to the top, do it again. */ | |
18893 | } | |
18894 | } | |
18895 | ||
6f06d47b YQ |
18896 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18897 | struct abbrev_info *abbrev) | |
18898 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18899 | { | |
18900 | } | |
18901 | ||
35cc7ed7 YQ |
18902 | /* Read a minimal amount of information into the minimal die structure. |
18903 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18904 | |
48fbe735 YQ |
18905 | const gdb_byte * |
18906 | partial_die_info::read (const struct die_reader_specs *reader, | |
18907 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18908 | { |
dee91e82 | 18909 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18910 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18911 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18912 | unsigned int i; |
c5aa993b | 18913 | int has_low_pc_attr = 0; |
c906108c | 18914 | int has_high_pc_attr = 0; |
91da1414 | 18915 | int high_pc_relative = 0; |
c906108c | 18916 | |
18a8505e | 18917 | std::vector<struct attribute> attr_vec (abbrev.num_attrs); |
fd0a254f | 18918 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18919 | { |
18a8505e AT |
18920 | bool need_reprocess; |
18921 | info_ptr = read_attribute (reader, &attr_vec[i], &abbrev.attrs[i], | |
18922 | info_ptr, &need_reprocess); | |
18923 | /* String and address offsets that need to do the reprocessing have | |
18924 | already been read at this point, so there is no need to wait until | |
18925 | the loop terminates to do the reprocessing. */ | |
18926 | if (need_reprocess) | |
18927 | read_attribute_reprocess (reader, &attr_vec[i]); | |
18928 | attribute &attr = attr_vec[i]; | |
c906108c | 18929 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18930 | partial symbol table. */ |
c906108c SS |
18931 | switch (attr.name) |
18932 | { | |
18933 | case DW_AT_name: | |
48fbe735 | 18934 | switch (tag) |
71c25dea TT |
18935 | { |
18936 | case DW_TAG_compile_unit: | |
95554aad | 18937 | case DW_TAG_partial_unit: |
348e048f | 18938 | case DW_TAG_type_unit: |
71c25dea TT |
18939 | /* Compilation units have a DW_AT_name that is a filename, not |
18940 | a source language identifier. */ | |
18941 | case DW_TAG_enumeration_type: | |
18942 | case DW_TAG_enumerator: | |
18943 | /* These tags always have simple identifiers already; no need | |
18944 | to canonicalize them. */ | |
48fbe735 | 18945 | name = DW_STRING (&attr); |
71c25dea TT |
18946 | break; |
18947 | default: | |
48fbe735 YQ |
18948 | { |
18949 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18950 | ||
18951 | name | |
18952 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18953 | &objfile->per_bfd->storage_obstack); | |
18954 | } | |
71c25dea TT |
18955 | break; |
18956 | } | |
c906108c | 18957 | break; |
31ef98ae | 18958 | case DW_AT_linkage_name: |
c906108c | 18959 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18960 | /* Note that both forms of linkage name might appear. We |
18961 | assume they will be the same, and we only store the last | |
18962 | one we see. */ | |
48fbe735 | 18963 | linkage_name = DW_STRING (&attr); |
c906108c SS |
18964 | break; |
18965 | case DW_AT_low_pc: | |
18966 | has_low_pc_attr = 1; | |
48fbe735 | 18967 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18968 | break; |
18969 | case DW_AT_high_pc: | |
18970 | has_high_pc_attr = 1; | |
48fbe735 | 18971 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18972 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18973 | high_pc_relative = 1; | |
c906108c SS |
18974 | break; |
18975 | case DW_AT_location: | |
0963b4bd | 18976 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18977 | if (attr_form_is_block (&attr)) |
18978 | { | |
48fbe735 | 18979 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18980 | } |
3690dd37 | 18981 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18982 | { |
4d3c2250 | 18983 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18984 | } |
18985 | else | |
18986 | { | |
4d3c2250 KB |
18987 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18988 | "partial symbol information"); | |
8e19ed76 | 18989 | } |
c906108c | 18990 | break; |
c906108c | 18991 | case DW_AT_external: |
48fbe735 | 18992 | is_external = DW_UNSND (&attr); |
c906108c SS |
18993 | break; |
18994 | case DW_AT_declaration: | |
48fbe735 | 18995 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18996 | break; |
18997 | case DW_AT_type: | |
48fbe735 | 18998 | has_type = 1; |
c906108c SS |
18999 | break; |
19000 | case DW_AT_abstract_origin: | |
19001 | case DW_AT_specification: | |
72bf9492 | 19002 | case DW_AT_extension: |
48fbe735 YQ |
19003 | has_specification = 1; |
19004 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
19005 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 19006 | || cu->per_cu->is_dwz); |
c906108c SS |
19007 | break; |
19008 | case DW_AT_sibling: | |
19009 | /* Ignore absolute siblings, they might point outside of | |
19010 | the current compile unit. */ | |
19011 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19012 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19013 | else |
b9502d3f | 19014 | { |
48fbe735 | 19015 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
19016 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
19017 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
19018 | |
19019 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19020 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
19021 | else if (sibling_ptr > reader->buffer_end) |
19022 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 19023 | else |
48fbe735 | 19024 | sibling = sibling_ptr; |
b9502d3f | 19025 | } |
c906108c | 19026 | break; |
fa4028e9 | 19027 | case DW_AT_byte_size: |
48fbe735 | 19028 | has_byte_size = 1; |
fa4028e9 | 19029 | break; |
ff908ebf | 19030 | case DW_AT_const_value: |
48fbe735 | 19031 | has_const_value = 1; |
ff908ebf | 19032 | break; |
68511cec CES |
19033 | case DW_AT_calling_convention: |
19034 | /* DWARF doesn't provide a way to identify a program's source-level | |
19035 | entry point. DW_AT_calling_convention attributes are only meant | |
19036 | to describe functions' calling conventions. | |
19037 | ||
19038 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19039 | Fortran, and before DWARF 4 DW_CC_program was the only |
19040 | piece of debugging information whose definition refers to | |
19041 | a 'main program' at all, several compilers marked Fortran | |
19042 | main programs with DW_CC_program --- even when those | |
19043 | functions use the standard calling conventions. | |
19044 | ||
19045 | Although DWARF now specifies a way to provide this | |
19046 | information, we support this practice for backward | |
19047 | compatibility. */ | |
68511cec | 19048 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 19049 | && cu->language == language_fortran) |
48fbe735 | 19050 | main_subprogram = 1; |
68511cec | 19051 | break; |
481860b3 GB |
19052 | case DW_AT_inline: |
19053 | if (DW_UNSND (&attr) == DW_INL_inlined | |
19054 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 19055 | may_be_inlined = 1; |
481860b3 | 19056 | break; |
95554aad TT |
19057 | |
19058 | case DW_AT_import: | |
48fbe735 | 19059 | if (tag == DW_TAG_imported_unit) |
36586728 | 19060 | { |
48fbe735 YQ |
19061 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
19062 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
19063 | || cu->per_cu->is_dwz); |
19064 | } | |
95554aad TT |
19065 | break; |
19066 | ||
0c1b455e | 19067 | case DW_AT_main_subprogram: |
48fbe735 | 19068 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
19069 | break; |
19070 | ||
05caa1d2 TT |
19071 | case DW_AT_ranges: |
19072 | { | |
19073 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
19074 | but that requires a full DIE, so instead we just | |
19075 | reimplement it. */ | |
19076 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
19077 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
19078 | + (need_ranges_base | |
19079 | ? cu->ranges_base | |
19080 | : 0)); | |
19081 | ||
19082 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19083 | .debug_ranges section. */ | |
19084 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
19085 | nullptr)) | |
19086 | has_pc_info = 1; | |
19087 | } | |
19088 | break; | |
19089 | ||
c906108c SS |
19090 | default: |
19091 | break; | |
19092 | } | |
19093 | } | |
19094 | ||
10d06d82 TT |
19095 | /* For Ada, if both the name and the linkage name appear, we prefer |
19096 | the latter. This lets "catch exception" work better, regardless | |
19097 | of the order in which the name and linkage name were emitted. | |
19098 | Really, though, this is just a workaround for the fact that gdb | |
19099 | doesn't store both the name and the linkage name. */ | |
19100 | if (cu->language == language_ada && linkage_name != nullptr) | |
19101 | name = linkage_name; | |
19102 | ||
91da1414 | 19103 | if (high_pc_relative) |
48fbe735 | 19104 | highpc += lowpc; |
91da1414 | 19105 | |
9373cf26 JK |
19106 | if (has_low_pc_attr && has_high_pc_attr) |
19107 | { | |
19108 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19109 | eliminate duplicate copies of functions and vtables and such. | |
19110 | The linker will arbitrarily choose one and discard the others. | |
19111 | The AT_*_pc values for such functions refer to local labels in | |
19112 | these sections. If the section from that file was discarded, the | |
19113 | labels are not in the output, so the relocs get a value of 0. | |
19114 | If this is a discarded function, mark the pc bounds as invalid, | |
19115 | so that GDB will ignore it. */ | |
48fbe735 | 19116 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 19117 | { |
48fbe735 | 19118 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19119 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 19120 | |
b98664d3 | 19121 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19122 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19123 | paddress (gdbarch, lowpc), |
19124 | sect_offset_str (sect_off), | |
9d8780f0 | 19125 | objfile_name (objfile)); |
9373cf26 JK |
19126 | } |
19127 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19128 | else if (lowpc >= highpc) |
9373cf26 | 19129 | { |
48fbe735 | 19130 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19131 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 19132 | |
b98664d3 | 19133 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19134 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19135 | paddress (gdbarch, lowpc), |
19136 | paddress (gdbarch, highpc), | |
19137 | sect_offset_str (sect_off), | |
9c541725 | 19138 | objfile_name (objfile)); |
9373cf26 JK |
19139 | } |
19140 | else | |
48fbe735 | 19141 | has_pc_info = 1; |
9373cf26 | 19142 | } |
85cbf3d3 | 19143 | |
c906108c SS |
19144 | return info_ptr; |
19145 | } | |
19146 | ||
72bf9492 DJ |
19147 | /* Find a cached partial DIE at OFFSET in CU. */ |
19148 | ||
d590ff25 YQ |
19149 | struct partial_die_info * |
19150 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19151 | { |
19152 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19153 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19154 | |
9a3c8263 | 19155 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19156 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19157 | to_underlying (sect_off))); |
72bf9492 | 19158 | |
72bf9492 DJ |
19159 | return lookup_die; |
19160 | } | |
19161 | ||
348e048f DE |
19162 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19163 | except in the case of .debug_types DIEs which do not reference | |
19164 | outside their CU (they do however referencing other types via | |
55f1336d | 19165 | DW_FORM_ref_sig8). */ |
72bf9492 | 19166 | |
122cf0f2 | 19167 | static const struct cu_partial_die_info |
9c541725 | 19168 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19169 | { |
518817b3 SM |
19170 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19171 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19172 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
19173 | struct dwarf2_per_cu_data *per_cu = NULL; |
19174 | struct partial_die_info *pd = NULL; | |
72bf9492 | 19175 | |
36586728 | 19176 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 19177 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 19178 | { |
d590ff25 | 19179 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19180 | if (pd != NULL) |
fb816e8b | 19181 | return { cu, pd }; |
0d99eb77 DE |
19182 | /* We missed recording what we needed. |
19183 | Load all dies and try again. */ | |
19184 | per_cu = cu->per_cu; | |
5afb4e99 | 19185 | } |
0d99eb77 DE |
19186 | else |
19187 | { | |
19188 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19189 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19190 | { |
9d8780f0 SM |
19191 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19192 | " external reference to offset %s [in module %s].\n"), | |
19193 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19194 | bfd_get_filename (objfile->obfd)); |
19195 | } | |
9c541725 | 19196 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 19197 | dwarf2_per_objfile); |
72bf9492 | 19198 | |
0d99eb77 DE |
19199 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
19200 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 19201 | |
0d99eb77 | 19202 | per_cu->cu->last_used = 0; |
d590ff25 | 19203 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 19204 | } |
5afb4e99 | 19205 | |
dee91e82 DE |
19206 | /* If we didn't find it, and not all dies have been loaded, |
19207 | load them all and try again. */ | |
19208 | ||
5afb4e99 DJ |
19209 | if (pd == NULL && per_cu->load_all_dies == 0) |
19210 | { | |
5afb4e99 | 19211 | per_cu->load_all_dies = 1; |
fd820528 DE |
19212 | |
19213 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19214 | THIS_CU->cu may already be in use. So we can't just free it and | |
19215 | replace its DIEs with the ones we read in. Instead, we leave those | |
19216 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19217 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19218 | set. */ | |
dee91e82 | 19219 | load_partial_comp_unit (per_cu); |
5afb4e99 | 19220 | |
d590ff25 | 19221 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19222 | } |
19223 | ||
19224 | if (pd == NULL) | |
19225 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 19226 | _("could not find partial DIE %s " |
3e43a32a | 19227 | "in cache [from module %s]\n"), |
9d8780f0 | 19228 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 19229 | return { per_cu->cu, pd }; |
72bf9492 DJ |
19230 | } |
19231 | ||
abc72ce4 DE |
19232 | /* See if we can figure out if the class lives in a namespace. We do |
19233 | this by looking for a member function; its demangled name will | |
19234 | contain namespace info, if there is any. */ | |
19235 | ||
19236 | static void | |
19237 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19238 | struct dwarf2_cu *cu) | |
19239 | { | |
19240 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19241 | what template types look like, because the demangler | |
19242 | frequently doesn't give the same name as the debug info. We | |
19243 | could fix this by only using the demangled name to get the | |
19244 | prefix (but see comment in read_structure_type). */ | |
19245 | ||
19246 | struct partial_die_info *real_pdi; | |
19247 | struct partial_die_info *child_pdi; | |
19248 | ||
19249 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19250 | we should not do this. We'll prepend the parent's fully qualified | |
19251 | name when we create the partial symbol. */ | |
19252 | ||
19253 | real_pdi = struct_pdi; | |
19254 | while (real_pdi->has_specification) | |
fb816e8b | 19255 | { |
122cf0f2 AB |
19256 | auto res = find_partial_die (real_pdi->spec_offset, |
19257 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19258 | real_pdi = res.pdi; |
19259 | cu = res.cu; | |
19260 | } | |
abc72ce4 DE |
19261 | |
19262 | if (real_pdi->die_parent != NULL) | |
19263 | return; | |
19264 | ||
19265 | for (child_pdi = struct_pdi->die_child; | |
19266 | child_pdi != NULL; | |
19267 | child_pdi = child_pdi->die_sibling) | |
19268 | { | |
19269 | if (child_pdi->tag == DW_TAG_subprogram | |
19270 | && child_pdi->linkage_name != NULL) | |
19271 | { | |
43816ebc TT |
19272 | gdb::unique_xmalloc_ptr<char> actual_class_name |
19273 | (language_class_name_from_physname (cu->language_defn, | |
19274 | child_pdi->linkage_name)); | |
abc72ce4 DE |
19275 | if (actual_class_name != NULL) |
19276 | { | |
518817b3 | 19277 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 19278 | struct_pdi->name |
021887d8 | 19279 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 19280 | actual_class_name.get ()); |
abc72ce4 DE |
19281 | } |
19282 | break; | |
19283 | } | |
19284 | } | |
19285 | } | |
19286 | ||
52356b79 YQ |
19287 | void |
19288 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19289 | { |
abc72ce4 DE |
19290 | /* Once we've fixed up a die, there's no point in doing so again. |
19291 | This also avoids a memory leak if we were to call | |
19292 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19293 | if (fixup_called) |
abc72ce4 DE |
19294 | return; |
19295 | ||
72bf9492 DJ |
19296 | /* If we found a reference attribute and the DIE has no name, try |
19297 | to find a name in the referred to DIE. */ | |
19298 | ||
52356b79 | 19299 | if (name == NULL && has_specification) |
72bf9492 DJ |
19300 | { |
19301 | struct partial_die_info *spec_die; | |
72bf9492 | 19302 | |
122cf0f2 | 19303 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19304 | spec_die = res.pdi; |
19305 | cu = res.cu; | |
72bf9492 | 19306 | |
52356b79 | 19307 | spec_die->fixup (cu); |
72bf9492 DJ |
19308 | |
19309 | if (spec_die->name) | |
19310 | { | |
52356b79 | 19311 | name = spec_die->name; |
72bf9492 DJ |
19312 | |
19313 | /* Copy DW_AT_external attribute if it is set. */ | |
19314 | if (spec_die->is_external) | |
52356b79 | 19315 | is_external = spec_die->is_external; |
72bf9492 DJ |
19316 | } |
19317 | } | |
19318 | ||
19319 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 19320 | |
52356b79 YQ |
19321 | if (name == NULL && tag == DW_TAG_namespace) |
19322 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 19323 | |
abc72ce4 DE |
19324 | /* If there is no parent die to provide a namespace, and there are |
19325 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19326 | name. */ |
abc72ce4 | 19327 | if (cu->language == language_cplus |
fd5866f6 | 19328 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
19329 | && die_parent == NULL |
19330 | && has_children | |
19331 | && (tag == DW_TAG_class_type | |
19332 | || tag == DW_TAG_structure_type | |
19333 | || tag == DW_TAG_union_type)) | |
19334 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19335 | |
53832f31 TT |
19336 | /* GCC might emit a nameless struct or union that has a linkage |
19337 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
19338 | if (name == NULL |
19339 | && (tag == DW_TAG_class_type | |
19340 | || tag == DW_TAG_interface_type | |
19341 | || tag == DW_TAG_structure_type | |
19342 | || tag == DW_TAG_union_type) | |
19343 | && linkage_name != NULL) | |
53832f31 | 19344 | { |
43816ebc TT |
19345 | gdb::unique_xmalloc_ptr<char> demangled |
19346 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19347 | if (demangled != nullptr) | |
53832f31 | 19348 | { |
96408a79 SA |
19349 | const char *base; |
19350 | ||
19351 | /* Strip any leading namespaces/classes, keep only the base name. | |
19352 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19353 | base = strrchr (demangled.get (), ':'); |
19354 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19355 | base++; |
19356 | else | |
43816ebc | 19357 | base = demangled.get (); |
96408a79 | 19358 | |
518817b3 | 19359 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
021887d8 | 19360 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, base); |
53832f31 TT |
19361 | } |
19362 | } | |
19363 | ||
52356b79 | 19364 | fixup_called = 1; |
72bf9492 DJ |
19365 | } |
19366 | ||
18a8505e AT |
19367 | /* Process the attributes that had to be skipped in the first round. These |
19368 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19369 | They could not have been processed in the first round, because at the time | |
19370 | the values of str_offsets_base or addr_base may not have been known. */ | |
19371 | void read_attribute_reprocess (const struct die_reader_specs *reader, | |
19372 | struct attribute *attr) | |
19373 | { | |
19374 | struct dwarf2_cu *cu = reader->cu; | |
19375 | switch (attr->form) | |
19376 | { | |
19377 | case DW_FORM_addrx: | |
19378 | case DW_FORM_GNU_addr_index: | |
19379 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19380 | break; | |
19381 | case DW_FORM_strx: | |
19382 | case DW_FORM_strx1: | |
19383 | case DW_FORM_strx2: | |
19384 | case DW_FORM_strx3: | |
19385 | case DW_FORM_strx4: | |
19386 | case DW_FORM_GNU_str_index: | |
19387 | { | |
19388 | unsigned int str_index = DW_UNSND (attr); | |
19389 | if (reader->dwo_file != NULL) | |
19390 | { | |
19391 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19392 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19393 | } | |
19394 | else | |
19395 | { | |
19396 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19397 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19398 | } | |
19399 | break; | |
19400 | } | |
19401 | default: | |
19402 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19403 | } | |
19404 | } | |
19405 | ||
a8329558 | 19406 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19407 | |
d521ce57 | 19408 | static const gdb_byte * |
dee91e82 DE |
19409 | read_attribute_value (const struct die_reader_specs *reader, |
19410 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19411 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19412 | bool *need_reprocess) | |
c906108c | 19413 | { |
dee91e82 | 19414 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19415 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19416 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19417 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19418 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19419 | bfd *abfd = reader->abfd; |
e7c27a73 | 19420 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19421 | unsigned int bytes_read; |
19422 | struct dwarf_block *blk; | |
18a8505e | 19423 | *need_reprocess = false; |
c906108c | 19424 | |
aead7601 | 19425 | attr->form = (enum dwarf_form) form; |
a8329558 | 19426 | switch (form) |
c906108c | 19427 | { |
c906108c | 19428 | case DW_FORM_ref_addr: |
ae411497 | 19429 | if (cu->header.version == 2) |
4568ecf9 | 19430 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19431 | else |
4568ecf9 DE |
19432 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19433 | &cu->header, &bytes_read); | |
ae411497 TT |
19434 | info_ptr += bytes_read; |
19435 | break; | |
36586728 TT |
19436 | case DW_FORM_GNU_ref_alt: |
19437 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19438 | info_ptr += bytes_read; | |
19439 | break; | |
ae411497 | 19440 | case DW_FORM_addr: |
e7c27a73 | 19441 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19442 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19443 | info_ptr += bytes_read; |
c906108c SS |
19444 | break; |
19445 | case DW_FORM_block2: | |
7b5a2f43 | 19446 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19447 | blk->size = read_2_bytes (abfd, info_ptr); |
19448 | info_ptr += 2; | |
19449 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19450 | info_ptr += blk->size; | |
19451 | DW_BLOCK (attr) = blk; | |
19452 | break; | |
19453 | case DW_FORM_block4: | |
7b5a2f43 | 19454 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19455 | blk->size = read_4_bytes (abfd, info_ptr); |
19456 | info_ptr += 4; | |
19457 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19458 | info_ptr += blk->size; | |
19459 | DW_BLOCK (attr) = blk; | |
19460 | break; | |
19461 | case DW_FORM_data2: | |
19462 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19463 | info_ptr += 2; | |
19464 | break; | |
19465 | case DW_FORM_data4: | |
19466 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19467 | info_ptr += 4; | |
19468 | break; | |
19469 | case DW_FORM_data8: | |
19470 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19471 | info_ptr += 8; | |
19472 | break; | |
0224619f JK |
19473 | case DW_FORM_data16: |
19474 | blk = dwarf_alloc_block (cu); | |
19475 | blk->size = 16; | |
19476 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19477 | info_ptr += 16; | |
19478 | DW_BLOCK (attr) = blk; | |
19479 | break; | |
2dc7f7b3 TT |
19480 | case DW_FORM_sec_offset: |
19481 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19482 | info_ptr += bytes_read; | |
19483 | break; | |
c906108c | 19484 | case DW_FORM_string: |
9b1c24c8 | 19485 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19486 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19487 | info_ptr += bytes_read; |
19488 | break; | |
4bdf3d34 | 19489 | case DW_FORM_strp: |
36586728 TT |
19490 | if (!cu->per_cu->is_dwz) |
19491 | { | |
ed2dc618 SM |
19492 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19493 | abfd, info_ptr, cu_header, | |
36586728 TT |
19494 | &bytes_read); |
19495 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19496 | info_ptr += bytes_read; | |
19497 | break; | |
19498 | } | |
19499 | /* FALLTHROUGH */ | |
43988095 JK |
19500 | case DW_FORM_line_strp: |
19501 | if (!cu->per_cu->is_dwz) | |
19502 | { | |
ed2dc618 SM |
19503 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19504 | abfd, info_ptr, | |
43988095 JK |
19505 | cu_header, &bytes_read); |
19506 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19507 | info_ptr += bytes_read; | |
19508 | break; | |
19509 | } | |
19510 | /* FALLTHROUGH */ | |
36586728 TT |
19511 | case DW_FORM_GNU_strp_alt: |
19512 | { | |
ed2dc618 | 19513 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19514 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19515 | &bytes_read); | |
19516 | ||
ed2dc618 SM |
19517 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19518 | dwz, str_offset); | |
36586728 TT |
19519 | DW_STRING_IS_CANONICAL (attr) = 0; |
19520 | info_ptr += bytes_read; | |
19521 | } | |
4bdf3d34 | 19522 | break; |
2dc7f7b3 | 19523 | case DW_FORM_exprloc: |
c906108c | 19524 | case DW_FORM_block: |
7b5a2f43 | 19525 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19526 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19527 | info_ptr += bytes_read; | |
19528 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19529 | info_ptr += blk->size; | |
19530 | DW_BLOCK (attr) = blk; | |
19531 | break; | |
19532 | case DW_FORM_block1: | |
7b5a2f43 | 19533 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19534 | blk->size = read_1_byte (abfd, info_ptr); |
19535 | info_ptr += 1; | |
19536 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19537 | info_ptr += blk->size; | |
19538 | DW_BLOCK (attr) = blk; | |
19539 | break; | |
19540 | case DW_FORM_data1: | |
19541 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19542 | info_ptr += 1; | |
19543 | break; | |
19544 | case DW_FORM_flag: | |
19545 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19546 | info_ptr += 1; | |
19547 | break; | |
2dc7f7b3 TT |
19548 | case DW_FORM_flag_present: |
19549 | DW_UNSND (attr) = 1; | |
19550 | break; | |
c906108c SS |
19551 | case DW_FORM_sdata: |
19552 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19553 | info_ptr += bytes_read; | |
19554 | break; | |
19555 | case DW_FORM_udata: | |
18a8505e | 19556 | case DW_FORM_rnglistx: |
c906108c SS |
19557 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19558 | info_ptr += bytes_read; | |
19559 | break; | |
19560 | case DW_FORM_ref1: | |
9c541725 | 19561 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19562 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19563 | info_ptr += 1; |
19564 | break; | |
19565 | case DW_FORM_ref2: | |
9c541725 | 19566 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19567 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19568 | info_ptr += 2; |
19569 | break; | |
19570 | case DW_FORM_ref4: | |
9c541725 | 19571 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19572 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19573 | info_ptr += 4; |
19574 | break; | |
613e1657 | 19575 | case DW_FORM_ref8: |
9c541725 | 19576 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19577 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19578 | info_ptr += 8; |
19579 | break; | |
55f1336d | 19580 | case DW_FORM_ref_sig8: |
ac9ec31b | 19581 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19582 | info_ptr += 8; |
19583 | break; | |
c906108c | 19584 | case DW_FORM_ref_udata: |
9c541725 | 19585 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19586 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19587 | info_ptr += bytes_read; |
19588 | break; | |
c906108c | 19589 | case DW_FORM_indirect: |
a8329558 KW |
19590 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19591 | info_ptr += bytes_read; | |
43988095 JK |
19592 | if (form == DW_FORM_implicit_const) |
19593 | { | |
19594 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19595 | info_ptr += bytes_read; | |
19596 | } | |
19597 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19598 | info_ptr, need_reprocess); |
43988095 JK |
19599 | break; |
19600 | case DW_FORM_implicit_const: | |
19601 | DW_SND (attr) = implicit_const; | |
a8329558 | 19602 | break; |
336d760d | 19603 | case DW_FORM_addrx: |
3019eac3 | 19604 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19605 | *need_reprocess = true; |
19606 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19607 | info_ptr += bytes_read; |
19608 | break; | |
cf532bd1 | 19609 | case DW_FORM_strx: |
15f18d14 AT |
19610 | case DW_FORM_strx1: |
19611 | case DW_FORM_strx2: | |
19612 | case DW_FORM_strx3: | |
19613 | case DW_FORM_strx4: | |
3019eac3 | 19614 | case DW_FORM_GNU_str_index: |
3019eac3 | 19615 | { |
15f18d14 AT |
19616 | ULONGEST str_index; |
19617 | if (form == DW_FORM_strx1) | |
19618 | { | |
19619 | str_index = read_1_byte (abfd, info_ptr); | |
19620 | info_ptr += 1; | |
19621 | } | |
19622 | else if (form == DW_FORM_strx2) | |
19623 | { | |
19624 | str_index = read_2_bytes (abfd, info_ptr); | |
19625 | info_ptr += 2; | |
19626 | } | |
19627 | else if (form == DW_FORM_strx3) | |
19628 | { | |
19629 | str_index = read_3_bytes (abfd, info_ptr); | |
19630 | info_ptr += 3; | |
19631 | } | |
19632 | else if (form == DW_FORM_strx4) | |
19633 | { | |
19634 | str_index = read_4_bytes (abfd, info_ptr); | |
19635 | info_ptr += 4; | |
19636 | } | |
19637 | else | |
19638 | { | |
19639 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19640 | info_ptr += bytes_read; | |
19641 | } | |
18a8505e AT |
19642 | *need_reprocess = true; |
19643 | DW_UNSND (attr) = str_index; | |
19644 | } | |
3019eac3 | 19645 | break; |
c906108c | 19646 | default: |
8a3fe4f8 | 19647 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19648 | dwarf_form_name (form), |
19649 | bfd_get_filename (abfd)); | |
c906108c | 19650 | } |
28e94949 | 19651 | |
36586728 | 19652 | /* Super hack. */ |
7771576e | 19653 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19654 | attr->form = DW_FORM_GNU_ref_alt; |
19655 | ||
28e94949 JB |
19656 | /* We have seen instances where the compiler tried to emit a byte |
19657 | size attribute of -1 which ended up being encoded as an unsigned | |
19658 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19659 | an object of this size seems pretty unlikely so we can relatively | |
19660 | safely treat these cases as if the size attribute was invalid and | |
19661 | treat them as zero by default. */ | |
19662 | if (attr->name == DW_AT_byte_size | |
19663 | && form == DW_FORM_data4 | |
19664 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19665 | { |
19666 | complaint | |
b98664d3 | 19667 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19668 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19669 | DW_UNSND (attr) = 0; |
19670 | } | |
28e94949 | 19671 | |
c906108c SS |
19672 | return info_ptr; |
19673 | } | |
19674 | ||
a8329558 KW |
19675 | /* Read an attribute described by an abbreviated attribute. */ |
19676 | ||
d521ce57 | 19677 | static const gdb_byte * |
dee91e82 DE |
19678 | read_attribute (const struct die_reader_specs *reader, |
19679 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19680 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19681 | { |
19682 | attr->name = abbrev->name; | |
43988095 | 19683 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19684 | abbrev->implicit_const, info_ptr, |
19685 | need_reprocess); | |
a8329558 KW |
19686 | } |
19687 | ||
0963b4bd | 19688 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19689 | |
19690 | static unsigned int | |
a1855c1d | 19691 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19692 | { |
fe1b8b76 | 19693 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19694 | } |
19695 | ||
19696 | static int | |
a1855c1d | 19697 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19698 | { |
fe1b8b76 | 19699 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19700 | } |
19701 | ||
19702 | static unsigned int | |
a1855c1d | 19703 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19704 | { |
fe1b8b76 | 19705 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19706 | } |
19707 | ||
21ae7a4d | 19708 | static int |
a1855c1d | 19709 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19710 | { |
19711 | return bfd_get_signed_16 (abfd, buf); | |
19712 | } | |
19713 | ||
15f18d14 AT |
19714 | static unsigned int |
19715 | read_3_bytes (bfd *abfd, const gdb_byte *buf) | |
19716 | { | |
19717 | unsigned int result = 0; | |
19718 | for (int i = 0; i < 3; ++i) | |
19719 | { | |
19720 | unsigned char byte = bfd_get_8 (abfd, buf); | |
19721 | buf++; | |
19722 | result |= ((unsigned int) byte << (i * 8)); | |
19723 | } | |
19724 | return result; | |
19725 | } | |
19726 | ||
c906108c | 19727 | static unsigned int |
a1855c1d | 19728 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19729 | { |
fe1b8b76 | 19730 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19731 | } |
19732 | ||
21ae7a4d | 19733 | static int |
a1855c1d | 19734 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19735 | { |
19736 | return bfd_get_signed_32 (abfd, buf); | |
19737 | } | |
19738 | ||
93311388 | 19739 | static ULONGEST |
a1855c1d | 19740 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19741 | { |
fe1b8b76 | 19742 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19743 | } |
19744 | ||
19745 | static CORE_ADDR | |
d521ce57 | 19746 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19747 | unsigned int *bytes_read) |
c906108c | 19748 | { |
e7c27a73 | 19749 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19750 | CORE_ADDR retval = 0; |
19751 | ||
107d2387 | 19752 | if (cu_header->signed_addr_p) |
c906108c | 19753 | { |
107d2387 AC |
19754 | switch (cu_header->addr_size) |
19755 | { | |
19756 | case 2: | |
fe1b8b76 | 19757 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19758 | break; |
19759 | case 4: | |
fe1b8b76 | 19760 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19761 | break; |
19762 | case 8: | |
fe1b8b76 | 19763 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19764 | break; |
19765 | default: | |
8e65ff28 | 19766 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19767 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19768 | bfd_get_filename (abfd)); |
107d2387 AC |
19769 | } |
19770 | } | |
19771 | else | |
19772 | { | |
19773 | switch (cu_header->addr_size) | |
19774 | { | |
19775 | case 2: | |
fe1b8b76 | 19776 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19777 | break; |
19778 | case 4: | |
fe1b8b76 | 19779 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19780 | break; |
19781 | case 8: | |
fe1b8b76 | 19782 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19783 | break; |
19784 | default: | |
8e65ff28 | 19785 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19786 | _("read_address: bad switch, " |
19787 | "unsigned [in module %s]"), | |
659b0389 | 19788 | bfd_get_filename (abfd)); |
107d2387 | 19789 | } |
c906108c | 19790 | } |
64367e0a | 19791 | |
107d2387 AC |
19792 | *bytes_read = cu_header->addr_size; |
19793 | return retval; | |
c906108c SS |
19794 | } |
19795 | ||
f7ef9339 | 19796 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19797 | specification allows the initial length to take up either 4 bytes |
19798 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19799 | bytes describe the length and all offsets will be 8 bytes in length | |
19800 | instead of 4. | |
19801 | ||
f7ef9339 KB |
19802 | An older, non-standard 64-bit format is also handled by this |
19803 | function. The older format in question stores the initial length | |
19804 | as an 8-byte quantity without an escape value. Lengths greater | |
19805 | than 2^32 aren't very common which means that the initial 4 bytes | |
19806 | is almost always zero. Since a length value of zero doesn't make | |
19807 | sense for the 32-bit format, this initial zero can be considered to | |
19808 | be an escape value which indicates the presence of the older 64-bit | |
19809 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19810 | greater than 4GB. If it becomes necessary to handle lengths |
19811 | somewhat larger than 4GB, we could allow other small values (such | |
19812 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19813 | escape values indicating the presence of the old format. | |
f7ef9339 | 19814 | |
917c78fc MK |
19815 | The value returned via bytes_read should be used to increment the |
19816 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19817 | |
613e1657 KB |
19818 | [ Note: read_initial_length() and read_offset() are based on the |
19819 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19820 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19821 | from: |
19822 | ||
f7ef9339 | 19823 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19824 | |
613e1657 KB |
19825 | This document is only a draft and is subject to change. (So beware.) |
19826 | ||
f7ef9339 | 19827 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19828 | determined empirically by examining 64-bit ELF files produced by |
19829 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19830 | |
19831 | - Kevin, July 16, 2002 | |
613e1657 KB |
19832 | ] */ |
19833 | ||
19834 | static LONGEST | |
d521ce57 | 19835 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19836 | { |
fe1b8b76 | 19837 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19838 | |
dd373385 | 19839 | if (length == 0xffffffff) |
613e1657 | 19840 | { |
fe1b8b76 | 19841 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19842 | *bytes_read = 12; |
613e1657 | 19843 | } |
dd373385 | 19844 | else if (length == 0) |
f7ef9339 | 19845 | { |
dd373385 | 19846 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19847 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19848 | *bytes_read = 8; |
f7ef9339 | 19849 | } |
613e1657 KB |
19850 | else |
19851 | { | |
19852 | *bytes_read = 4; | |
613e1657 KB |
19853 | } |
19854 | ||
c764a876 DE |
19855 | return length; |
19856 | } | |
dd373385 | 19857 | |
c764a876 DE |
19858 | /* Cover function for read_initial_length. |
19859 | Returns the length of the object at BUF, and stores the size of the | |
19860 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19861 | *OFFSET_SIZE. | |
19862 | If the initial length size is not equivalent to that specified in | |
19863 | CU_HEADER then issue a complaint. | |
19864 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19865 | |
c764a876 | 19866 | static LONGEST |
d521ce57 | 19867 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19868 | const struct comp_unit_head *cu_header, |
19869 | unsigned int *bytes_read, | |
19870 | unsigned int *offset_size) | |
19871 | { | |
19872 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19873 | ||
19874 | gdb_assert (cu_header->initial_length_size == 4 | |
19875 | || cu_header->initial_length_size == 8 | |
19876 | || cu_header->initial_length_size == 12); | |
19877 | ||
19878 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19879 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19880 | |
c764a876 | 19881 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19882 | return length; |
613e1657 KB |
19883 | } |
19884 | ||
19885 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19886 | given by cu_header->offset_size. */ |
613e1657 KB |
19887 | |
19888 | static LONGEST | |
d521ce57 TT |
19889 | read_offset (bfd *abfd, const gdb_byte *buf, |
19890 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19891 | unsigned int *bytes_read) |
c764a876 DE |
19892 | { |
19893 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19894 | |
c764a876 DE |
19895 | *bytes_read = cu_header->offset_size; |
19896 | return offset; | |
19897 | } | |
19898 | ||
19899 | /* Read an offset from the data stream. */ | |
19900 | ||
19901 | static LONGEST | |
d521ce57 | 19902 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19903 | { |
19904 | LONGEST retval = 0; | |
19905 | ||
c764a876 | 19906 | switch (offset_size) |
613e1657 KB |
19907 | { |
19908 | case 4: | |
fe1b8b76 | 19909 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19910 | break; |
19911 | case 8: | |
fe1b8b76 | 19912 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19913 | break; |
19914 | default: | |
8e65ff28 | 19915 | internal_error (__FILE__, __LINE__, |
c764a876 | 19916 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19917 | bfd_get_filename (abfd)); |
613e1657 KB |
19918 | } |
19919 | ||
917c78fc | 19920 | return retval; |
613e1657 KB |
19921 | } |
19922 | ||
d521ce57 TT |
19923 | static const gdb_byte * |
19924 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19925 | { |
19926 | /* If the size of a host char is 8 bits, we can return a pointer | |
19927 | to the buffer, otherwise we have to copy the data to a buffer | |
19928 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19929 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19930 | return buf; |
c906108c SS |
19931 | } |
19932 | ||
d521ce57 TT |
19933 | static const char * |
19934 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19935 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19936 | { |
19937 | /* If the size of a host char is 8 bits, we can return a pointer | |
19938 | to the string, otherwise we have to copy the string to a buffer | |
19939 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19940 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19941 | if (*buf == '\0') |
19942 | { | |
19943 | *bytes_read_ptr = 1; | |
19944 | return NULL; | |
19945 | } | |
d521ce57 TT |
19946 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19947 | return (const char *) buf; | |
4bdf3d34 JJ |
19948 | } |
19949 | ||
43988095 JK |
19950 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19951 | reporting strings FORM_NAME and SECT_NAME. */ | |
19952 | ||
d521ce57 | 19953 | static const char * |
ed2dc618 SM |
19954 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19955 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19956 | struct dwarf2_section_info *sect, |
19957 | const char *form_name, | |
19958 | const char *sect_name) | |
19959 | { | |
ed2dc618 | 19960 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19961 | if (sect->buffer == NULL) |
19962 | error (_("%s used without %s section [in module %s]"), | |
19963 | form_name, sect_name, bfd_get_filename (abfd)); | |
19964 | if (str_offset >= sect->size) | |
19965 | error (_("%s pointing outside of %s section [in module %s]"), | |
19966 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19967 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19968 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19969 | return NULL; |
43988095 JK |
19970 | return (const char *) (sect->buffer + str_offset); |
19971 | } | |
19972 | ||
19973 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19974 | ||
19975 | static const char * | |
ed2dc618 SM |
19976 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19977 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19978 | { |
ed2dc618 SM |
19979 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19980 | abfd, str_offset, | |
43988095 JK |
19981 | &dwarf2_per_objfile->str, |
19982 | "DW_FORM_strp", ".debug_str"); | |
19983 | } | |
19984 | ||
19985 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19986 | ||
19987 | static const char * | |
ed2dc618 SM |
19988 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19989 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19990 | { |
ed2dc618 SM |
19991 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19992 | abfd, str_offset, | |
43988095 JK |
19993 | &dwarf2_per_objfile->line_str, |
19994 | "DW_FORM_line_strp", | |
19995 | ".debug_line_str"); | |
c906108c SS |
19996 | } |
19997 | ||
36586728 TT |
19998 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19999 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
20000 | the string consists of a single NUL byte, return NULL; otherwise | |
20001 | return a pointer to the string. */ | |
20002 | ||
d521ce57 | 20003 | static const char * |
ed2dc618 SM |
20004 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
20005 | LONGEST str_offset) | |
36586728 | 20006 | { |
ed2dc618 | 20007 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
20008 | |
20009 | if (dwz->str.buffer == NULL) | |
20010 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
20011 | "section [in module %s]"), | |
00f93c44 | 20012 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
20013 | if (str_offset >= dwz->str.size) |
20014 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
20015 | ".debug_str section [in module %s]"), | |
00f93c44 | 20016 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
20017 | gdb_assert (HOST_CHAR_BIT == 8); |
20018 | if (dwz->str.buffer[str_offset] == '\0') | |
20019 | return NULL; | |
d521ce57 | 20020 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
20021 | } |
20022 | ||
43988095 JK |
20023 | /* Return pointer to string at .debug_str offset as read from BUF. |
20024 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20025 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20026 | ||
d521ce57 | 20027 | static const char * |
ed2dc618 SM |
20028 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
20029 | const gdb_byte *buf, | |
cf2c3c16 TT |
20030 | const struct comp_unit_head *cu_header, |
20031 | unsigned int *bytes_read_ptr) | |
20032 | { | |
20033 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
20034 | ||
ed2dc618 | 20035 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
20036 | } |
20037 | ||
43988095 JK |
20038 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
20039 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20040 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20041 | ||
20042 | static const char * | |
ed2dc618 SM |
20043 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20044 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
20045 | const struct comp_unit_head *cu_header, |
20046 | unsigned int *bytes_read_ptr) | |
20047 | { | |
20048 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
20049 | ||
ed2dc618 SM |
20050 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
20051 | str_offset); | |
43988095 JK |
20052 | } |
20053 | ||
20054 | ULONGEST | |
d521ce57 | 20055 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 20056 | unsigned int *bytes_read_ptr) |
c906108c | 20057 | { |
12df843f | 20058 | ULONGEST result; |
ce5d95e1 | 20059 | unsigned int num_read; |
870f88f7 | 20060 | int shift; |
c906108c SS |
20061 | unsigned char byte; |
20062 | ||
20063 | result = 0; | |
20064 | shift = 0; | |
20065 | num_read = 0; | |
c906108c SS |
20066 | while (1) |
20067 | { | |
fe1b8b76 | 20068 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
20069 | buf++; |
20070 | num_read++; | |
12df843f | 20071 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
20072 | if ((byte & 128) == 0) |
20073 | { | |
20074 | break; | |
20075 | } | |
20076 | shift += 7; | |
20077 | } | |
20078 | *bytes_read_ptr = num_read; | |
20079 | return result; | |
20080 | } | |
20081 | ||
12df843f | 20082 | static LONGEST |
d521ce57 TT |
20083 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
20084 | unsigned int *bytes_read_ptr) | |
c906108c | 20085 | { |
4dd1b460 | 20086 | ULONGEST result; |
870f88f7 | 20087 | int shift, num_read; |
c906108c SS |
20088 | unsigned char byte; |
20089 | ||
20090 | result = 0; | |
20091 | shift = 0; | |
c906108c | 20092 | num_read = 0; |
c906108c SS |
20093 | while (1) |
20094 | { | |
fe1b8b76 | 20095 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
20096 | buf++; |
20097 | num_read++; | |
4dd1b460 | 20098 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
20099 | shift += 7; |
20100 | if ((byte & 128) == 0) | |
20101 | { | |
20102 | break; | |
20103 | } | |
20104 | } | |
77e0b926 | 20105 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
4dd1b460 | 20106 | result |= -(((ULONGEST) 1) << shift); |
c906108c SS |
20107 | *bytes_read_ptr = num_read; |
20108 | return result; | |
20109 | } | |
20110 | ||
3019eac3 | 20111 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20112 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20113 | ADDR_SIZE is the size of addresses from the CU header. */ |
20114 | ||
20115 | static CORE_ADDR | |
ed2dc618 | 20116 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
20117 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
20118 | int addr_size) | |
3019eac3 DE |
20119 | { |
20120 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20121 | bfd *abfd = objfile->obfd; | |
20122 | const gdb_byte *info_ptr; | |
18a8505e | 20123 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 DE |
20124 | |
20125 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
20126 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
20127 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 20128 | objfile_name (objfile)); |
18a8505e AT |
20129 | if (addr_base_or_zero + addr_index * addr_size |
20130 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
20131 | error (_("DW_FORM_addr_index pointing outside of " |
20132 | ".debug_addr section [in module %s]"), | |
4262abfb | 20133 | objfile_name (objfile)); |
3019eac3 | 20134 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 20135 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
20136 | if (addr_size == 4) |
20137 | return bfd_get_32 (abfd, info_ptr); | |
20138 | else | |
20139 | return bfd_get_64 (abfd, info_ptr); | |
20140 | } | |
20141 | ||
20142 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20143 | ||
20144 | static CORE_ADDR | |
20145 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20146 | { | |
518817b3 SM |
20147 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
20148 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
20149 | } |
20150 | ||
20151 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20152 | ||
20153 | static CORE_ADDR | |
d521ce57 | 20154 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20155 | unsigned int *bytes_read) |
20156 | { | |
518817b3 | 20157 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
20158 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20159 | ||
20160 | return read_addr_index (cu, addr_index); | |
20161 | } | |
20162 | ||
3019eac3 DE |
20163 | /* Given an index in .debug_addr, fetch the value. |
20164 | NOTE: This can be called during dwarf expression evaluation, | |
20165 | long after the debug information has been read, and thus per_cu->cu | |
20166 | may no longer exist. */ | |
20167 | ||
20168 | CORE_ADDR | |
20169 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
20170 | unsigned int addr_index) | |
20171 | { | |
ed2dc618 | 20172 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 20173 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 20174 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20175 | int addr_size; |
20176 | ||
3019eac3 DE |
20177 | /* We need addr_base and addr_size. |
20178 | If we don't have PER_CU->cu, we have to get it. | |
20179 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20180 | which at this point doesn't seem justified: it's not clear how frequently | |
20181 | it would get used and it would increase the size of every PER_CU. | |
20182 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20183 | so we're not in uncharted territory here. | |
20184 | Alas we need to be a bit more complicated as addr_base is contained | |
20185 | in the DIE. | |
20186 | ||
20187 | We don't need to read the entire CU(/TU). | |
20188 | We just need the header and top level die. | |
a1b64ce1 | 20189 | |
3019eac3 | 20190 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20191 | For now we skip this optimization. */ |
3019eac3 DE |
20192 | |
20193 | if (cu != NULL) | |
20194 | { | |
20195 | addr_base = cu->addr_base; | |
20196 | addr_size = cu->header.addr_size; | |
20197 | } | |
20198 | else | |
20199 | { | |
c0ab21c2 TT |
20200 | cutu_reader reader (per_cu, NULL, 0, 0, false); |
20201 | addr_base = reader.cu->addr_base; | |
20202 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20203 | } |
20204 | ||
ed2dc618 SM |
20205 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
20206 | addr_size); | |
3019eac3 DE |
20207 | } |
20208 | ||
18a8505e AT |
20209 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20210 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20211 | DWO file. */ | |
3019eac3 | 20212 | |
d521ce57 | 20213 | static const char * |
18a8505e AT |
20214 | read_str_index (struct dwarf2_cu *cu, |
20215 | struct dwarf2_section_info *str_section, | |
20216 | struct dwarf2_section_info *str_offsets_section, | |
20217 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20218 | { |
518817b3 SM |
20219 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20220 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20221 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 20222 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20223 | bfd *abfd = objfile->obfd; |
d521ce57 | 20224 | const gdb_byte *info_ptr; |
3019eac3 | 20225 | ULONGEST str_offset; |
cf532bd1 | 20226 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20227 | |
73869dc2 DE |
20228 | dwarf2_read_section (objfile, str_section); |
20229 | dwarf2_read_section (objfile, str_offsets_section); | |
20230 | if (str_section->buffer == NULL) | |
18a8505e | 20231 | error (_("%s used without %s section" |
9d8780f0 | 20232 | " in CU at offset %s [in module %s]"), |
18a8505e AT |
20233 | form_name, get_section_name (str_section), |
20234 | sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20235 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20236 | error (_("%s used without %s section" |
9d8780f0 | 20237 | " in CU at offset %s [in module %s]"), |
18a8505e AT |
20238 | form_name, get_section_name (str_section), |
20239 | sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20240 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20241 | + str_offsets_base |
3019eac3 DE |
20242 | + str_index * cu->header.offset_size); |
20243 | if (cu->header.offset_size == 4) | |
20244 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20245 | else | |
20246 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20247 | if (str_offset >= str_section->size) |
57d63ce2 | 20248 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20249 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20250 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20251 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20252 | } |
20253 | ||
18a8505e AT |
20254 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20255 | ||
20256 | static const char * | |
20257 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20258 | { | |
20259 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20260 | ? reader->cu->header.addr_size : 0; | |
20261 | return read_str_index (reader->cu, | |
20262 | &reader->dwo_file->sections.str, | |
20263 | &reader->dwo_file->sections.str_offsets, | |
20264 | str_offsets_base, str_index); | |
20265 | } | |
20266 | ||
20267 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20268 | ||
20269 | static const char * | |
20270 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20271 | { | |
20272 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
20273 | const char *objf_name = objfile_name (objfile); | |
20274 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20275 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20276 | ||
20277 | if (!cu->str_offsets_base.has_value ()) | |
20278 | error (_("%s used in Fission stub without %s" | |
20279 | " in CU at offset 0x%lx [in module %s]"), | |
20280 | form_name, str_offsets_attr_name, | |
20281 | (long) cu->header.offset_size, objf_name); | |
20282 | ||
20283 | return read_str_index (cu, | |
20284 | &cu->per_cu->dwarf2_per_objfile->str, | |
20285 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
20286 | *cu->str_offsets_base, str_index); | |
20287 | } | |
20288 | ||
3019eac3 DE |
20289 | /* Return the length of an LEB128 number in BUF. */ |
20290 | ||
20291 | static int | |
20292 | leb128_size (const gdb_byte *buf) | |
20293 | { | |
20294 | const gdb_byte *begin = buf; | |
20295 | gdb_byte byte; | |
20296 | ||
20297 | while (1) | |
20298 | { | |
20299 | byte = *buf++; | |
20300 | if ((byte & 128) == 0) | |
20301 | return buf - begin; | |
20302 | } | |
20303 | } | |
20304 | ||
c906108c | 20305 | static void |
e142c38c | 20306 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20307 | { |
20308 | switch (lang) | |
20309 | { | |
20310 | case DW_LANG_C89: | |
76bee0cc | 20311 | case DW_LANG_C99: |
0cfd832f | 20312 | case DW_LANG_C11: |
c906108c | 20313 | case DW_LANG_C: |
d1be3247 | 20314 | case DW_LANG_UPC: |
e142c38c | 20315 | cu->language = language_c; |
c906108c | 20316 | break; |
9c37b5ae | 20317 | case DW_LANG_Java: |
c906108c | 20318 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20319 | case DW_LANG_C_plus_plus_11: |
20320 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20321 | cu->language = language_cplus; |
c906108c | 20322 | break; |
6aecb9c2 JB |
20323 | case DW_LANG_D: |
20324 | cu->language = language_d; | |
20325 | break; | |
c906108c SS |
20326 | case DW_LANG_Fortran77: |
20327 | case DW_LANG_Fortran90: | |
b21b22e0 | 20328 | case DW_LANG_Fortran95: |
f7de9aab MW |
20329 | case DW_LANG_Fortran03: |
20330 | case DW_LANG_Fortran08: | |
e142c38c | 20331 | cu->language = language_fortran; |
c906108c | 20332 | break; |
a766d390 DE |
20333 | case DW_LANG_Go: |
20334 | cu->language = language_go; | |
20335 | break; | |
c906108c | 20336 | case DW_LANG_Mips_Assembler: |
e142c38c | 20337 | cu->language = language_asm; |
c906108c SS |
20338 | break; |
20339 | case DW_LANG_Ada83: | |
8aaf0b47 | 20340 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20341 | cu->language = language_ada; |
20342 | break; | |
72019c9c GM |
20343 | case DW_LANG_Modula2: |
20344 | cu->language = language_m2; | |
20345 | break; | |
fe8e67fd PM |
20346 | case DW_LANG_Pascal83: |
20347 | cu->language = language_pascal; | |
20348 | break; | |
22566fbd DJ |
20349 | case DW_LANG_ObjC: |
20350 | cu->language = language_objc; | |
20351 | break; | |
c44af4eb TT |
20352 | case DW_LANG_Rust: |
20353 | case DW_LANG_Rust_old: | |
20354 | cu->language = language_rust; | |
20355 | break; | |
c906108c SS |
20356 | case DW_LANG_Cobol74: |
20357 | case DW_LANG_Cobol85: | |
c906108c | 20358 | default: |
e142c38c | 20359 | cu->language = language_minimal; |
c906108c SS |
20360 | break; |
20361 | } | |
e142c38c | 20362 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20363 | } |
20364 | ||
20365 | /* Return the named attribute or NULL if not there. */ | |
20366 | ||
20367 | static struct attribute * | |
e142c38c | 20368 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20369 | { |
a48e046c | 20370 | for (;;) |
c906108c | 20371 | { |
a48e046c TT |
20372 | unsigned int i; |
20373 | struct attribute *spec = NULL; | |
20374 | ||
20375 | for (i = 0; i < die->num_attrs; ++i) | |
20376 | { | |
20377 | if (die->attrs[i].name == name) | |
20378 | return &die->attrs[i]; | |
20379 | if (die->attrs[i].name == DW_AT_specification | |
20380 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20381 | spec = &die->attrs[i]; | |
20382 | } | |
20383 | ||
20384 | if (!spec) | |
20385 | break; | |
c906108c | 20386 | |
f2f0e013 | 20387 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20388 | } |
c5aa993b | 20389 | |
c906108c SS |
20390 | return NULL; |
20391 | } | |
20392 | ||
348e048f DE |
20393 | /* Return the named attribute or NULL if not there, |
20394 | but do not follow DW_AT_specification, etc. | |
20395 | This is for use in contexts where we're reading .debug_types dies. | |
20396 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
20397 | back up the chain, and we want to go down. */ | |
20398 | ||
20399 | static struct attribute * | |
45e58e77 | 20400 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
20401 | { |
20402 | unsigned int i; | |
20403 | ||
20404 | for (i = 0; i < die->num_attrs; ++i) | |
20405 | if (die->attrs[i].name == name) | |
20406 | return &die->attrs[i]; | |
20407 | ||
20408 | return NULL; | |
20409 | } | |
20410 | ||
7d45c7c3 KB |
20411 | /* Return the string associated with a string-typed attribute, or NULL if it |
20412 | is either not found or is of an incorrect type. */ | |
20413 | ||
20414 | static const char * | |
20415 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20416 | { | |
20417 | struct attribute *attr; | |
20418 | const char *str = NULL; | |
20419 | ||
20420 | attr = dwarf2_attr (die, name, cu); | |
20421 | ||
20422 | if (attr != NULL) | |
20423 | { | |
43988095 | 20424 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 20425 | || attr->form == DW_FORM_string |
cf532bd1 | 20426 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
20427 | || attr->form == DW_FORM_strx1 |
20428 | || attr->form == DW_FORM_strx2 | |
20429 | || attr->form == DW_FORM_strx3 | |
20430 | || attr->form == DW_FORM_strx4 | |
b3340438 | 20431 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 20432 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20433 | str = DW_STRING (attr); |
20434 | else | |
b98664d3 | 20435 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20436 | "DIE at %s in module %s"), |
20437 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20438 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20439 | } |
20440 | ||
20441 | return str; | |
20442 | } | |
20443 | ||
a084a2a6 | 20444 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20445 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20446 | static const char * |
20447 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20448 | { | |
20449 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20450 | if (dwo_name == nullptr) | |
20451 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20452 | return dwo_name; | |
20453 | } | |
20454 | ||
05cf31d1 JB |
20455 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20456 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20457 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20458 | |
20459 | static int | |
20460 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20461 | { | |
20462 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20463 | ||
20464 | return (attr && DW_UNSND (attr)); | |
20465 | } | |
20466 | ||
3ca72b44 | 20467 | static int |
e142c38c | 20468 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20469 | { |
05cf31d1 JB |
20470 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20471 | which value is non-zero. However, we have to be careful with | |
20472 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20473 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20474 | end up accidently finding a declaration attribute that belongs | |
20475 | to a different DIE referenced by the specification attribute, | |
20476 | even though the given DIE does not have a declaration attribute. */ | |
20477 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20478 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20479 | } |
20480 | ||
63d06c5c | 20481 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20482 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20483 | containing the return value on output. If there is no |
20484 | specification, but there is an abstract origin, that is | |
20485 | returned. */ | |
63d06c5c DC |
20486 | |
20487 | static struct die_info * | |
f2f0e013 | 20488 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20489 | { |
f2f0e013 DJ |
20490 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20491 | *spec_cu); | |
63d06c5c | 20492 | |
edb3359d DJ |
20493 | if (spec_attr == NULL) |
20494 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20495 | ||
63d06c5c DC |
20496 | if (spec_attr == NULL) |
20497 | return NULL; | |
20498 | else | |
f2f0e013 | 20499 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20500 | } |
c906108c | 20501 | |
527f3840 JK |
20502 | /* Stub for free_line_header to match void * callback types. */ |
20503 | ||
20504 | static void | |
20505 | free_line_header_voidp (void *arg) | |
20506 | { | |
9a3c8263 | 20507 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20508 | |
fff8551c | 20509 | delete lh; |
527f3840 JK |
20510 | } |
20511 | ||
fff8551c PA |
20512 | void |
20513 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20514 | { |
27e0867f | 20515 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
20516 | { |
20517 | size_t new_size; | |
20518 | if (version >= 5) | |
20519 | new_size = m_include_dirs.size (); | |
20520 | else | |
20521 | new_size = m_include_dirs.size () + 1; | |
20522 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", | |
20523 | new_size, include_dir); | |
20524 | } | |
20525 | m_include_dirs.push_back (include_dir); | |
debd256d | 20526 | } |
6e70227d | 20527 | |
fff8551c PA |
20528 | void |
20529 | line_header::add_file_name (const char *name, | |
ecfb656c | 20530 | dir_index d_index, |
fff8551c PA |
20531 | unsigned int mod_time, |
20532 | unsigned int length) | |
debd256d | 20533 | { |
27e0867f | 20534 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
20535 | { |
20536 | size_t new_size; | |
20537 | if (version >= 5) | |
20538 | new_size = file_names_size (); | |
20539 | else | |
20540 | new_size = file_names_size () + 1; | |
20541 | fprintf_unfiltered (gdb_stdlog, "Adding file %zu: %s\n", | |
20542 | new_size, name); | |
20543 | } | |
20544 | m_file_names.emplace_back (name, d_index, mod_time, length); | |
debd256d | 20545 | } |
6e70227d | 20546 | |
83769d0b | 20547 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20548 | |
20549 | static struct dwarf2_section_info * | |
20550 | get_debug_line_section (struct dwarf2_cu *cu) | |
20551 | { | |
20552 | struct dwarf2_section_info *section; | |
518817b3 SM |
20553 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20554 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20555 | |
20556 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20557 | DWO file. */ | |
20558 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20559 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20560 | else if (cu->per_cu->is_dwz) | |
20561 | { | |
ed2dc618 | 20562 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20563 | |
20564 | section = &dwz->line; | |
20565 | } | |
20566 | else | |
20567 | section = &dwarf2_per_objfile->line; | |
20568 | ||
20569 | return section; | |
20570 | } | |
20571 | ||
43988095 JK |
20572 | /* Read directory or file name entry format, starting with byte of |
20573 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20574 | entries count and the entries themselves in the described entry | |
20575 | format. */ | |
20576 | ||
20577 | static void | |
ed2dc618 SM |
20578 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20579 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20580 | struct line_header *lh, |
20581 | const struct comp_unit_head *cu_header, | |
20582 | void (*callback) (struct line_header *lh, | |
20583 | const char *name, | |
ecfb656c | 20584 | dir_index d_index, |
43988095 JK |
20585 | unsigned int mod_time, |
20586 | unsigned int length)) | |
20587 | { | |
20588 | gdb_byte format_count, formati; | |
20589 | ULONGEST data_count, datai; | |
20590 | const gdb_byte *buf = *bufp; | |
20591 | const gdb_byte *format_header_data; | |
43988095 JK |
20592 | unsigned int bytes_read; |
20593 | ||
20594 | format_count = read_1_byte (abfd, buf); | |
20595 | buf += 1; | |
20596 | format_header_data = buf; | |
20597 | for (formati = 0; formati < format_count; formati++) | |
20598 | { | |
20599 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20600 | buf += bytes_read; | |
20601 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20602 | buf += bytes_read; | |
20603 | } | |
20604 | ||
20605 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20606 | buf += bytes_read; | |
20607 | for (datai = 0; datai < data_count; datai++) | |
20608 | { | |
20609 | const gdb_byte *format = format_header_data; | |
20610 | struct file_entry fe; | |
20611 | ||
43988095 JK |
20612 | for (formati = 0; formati < format_count; formati++) |
20613 | { | |
ecfb656c | 20614 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20615 | format += bytes_read; |
43988095 | 20616 | |
ecfb656c | 20617 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20618 | format += bytes_read; |
ecfb656c PA |
20619 | |
20620 | gdb::optional<const char *> string; | |
20621 | gdb::optional<unsigned int> uint; | |
20622 | ||
43988095 JK |
20623 | switch (form) |
20624 | { | |
20625 | case DW_FORM_string: | |
ecfb656c | 20626 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20627 | buf += bytes_read; |
20628 | break; | |
20629 | ||
20630 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20631 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20632 | abfd, buf, | |
ecfb656c PA |
20633 | cu_header, |
20634 | &bytes_read)); | |
43988095 JK |
20635 | buf += bytes_read; |
20636 | break; | |
20637 | ||
20638 | case DW_FORM_data1: | |
ecfb656c | 20639 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20640 | buf += 1; |
20641 | break; | |
20642 | ||
20643 | case DW_FORM_data2: | |
ecfb656c | 20644 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20645 | buf += 2; |
20646 | break; | |
20647 | ||
20648 | case DW_FORM_data4: | |
ecfb656c | 20649 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20650 | buf += 4; |
20651 | break; | |
20652 | ||
20653 | case DW_FORM_data8: | |
ecfb656c | 20654 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20655 | buf += 8; |
20656 | break; | |
20657 | ||
7ba99d21 AT |
20658 | case DW_FORM_data16: |
20659 | /* This is used for MD5, but file_entry does not record MD5s. */ | |
20660 | buf += 16; | |
20661 | break; | |
20662 | ||
43988095 | 20663 | case DW_FORM_udata: |
ecfb656c | 20664 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20665 | buf += bytes_read; |
20666 | break; | |
20667 | ||
20668 | case DW_FORM_block: | |
20669 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20670 | current GDB. */ | |
20671 | break; | |
20672 | } | |
ecfb656c PA |
20673 | |
20674 | switch (content_type) | |
20675 | { | |
20676 | case DW_LNCT_path: | |
20677 | if (string.has_value ()) | |
20678 | fe.name = *string; | |
20679 | break; | |
20680 | case DW_LNCT_directory_index: | |
20681 | if (uint.has_value ()) | |
20682 | fe.d_index = (dir_index) *uint; | |
20683 | break; | |
20684 | case DW_LNCT_timestamp: | |
20685 | if (uint.has_value ()) | |
20686 | fe.mod_time = *uint; | |
20687 | break; | |
20688 | case DW_LNCT_size: | |
20689 | if (uint.has_value ()) | |
20690 | fe.length = *uint; | |
20691 | break; | |
20692 | case DW_LNCT_MD5: | |
20693 | break; | |
20694 | default: | |
b98664d3 | 20695 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20696 | pulongest (content_type)); |
20697 | } | |
43988095 JK |
20698 | } |
20699 | ||
ecfb656c | 20700 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20701 | } |
20702 | ||
20703 | *bufp = buf; | |
20704 | } | |
20705 | ||
debd256d | 20706 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20707 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20708 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20709 | Returns NULL if there is a problem reading the header, e.g., if it |
20710 | has a version we don't understand. | |
debd256d JB |
20711 | |
20712 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20713 | the returned object point into the dwarf line section buffer, |
20714 | and must not be freed. */ | |
ae2de4f8 | 20715 | |
fff8551c | 20716 | static line_header_up |
9c541725 | 20717 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20718 | { |
d521ce57 | 20719 | const gdb_byte *line_ptr; |
c764a876 | 20720 | unsigned int bytes_read, offset_size; |
debd256d | 20721 | int i; |
d521ce57 | 20722 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20723 | struct dwarf2_section_info *section; |
20724 | bfd *abfd; | |
518817b3 SM |
20725 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20726 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20727 | |
36586728 | 20728 | section = get_debug_line_section (cu); |
3019eac3 DE |
20729 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20730 | if (section->buffer == NULL) | |
debd256d | 20731 | { |
3019eac3 | 20732 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20733 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20734 | else |
b98664d3 | 20735 | complaint (_("missing .debug_line section")); |
debd256d JB |
20736 | return 0; |
20737 | } | |
20738 | ||
fceca515 DE |
20739 | /* We can't do this until we know the section is non-empty. |
20740 | Only then do we know we have such a section. */ | |
a32a8923 | 20741 | abfd = get_section_bfd_owner (section); |
fceca515 | 20742 | |
a738430d MK |
20743 | /* Make sure that at least there's room for the total_length field. |
20744 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20745 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20746 | { |
4d3c2250 | 20747 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20748 | return 0; |
20749 | } | |
20750 | ||
fff8551c | 20751 | line_header_up lh (new line_header ()); |
debd256d | 20752 | |
9c541725 | 20753 | lh->sect_off = sect_off; |
527f3840 JK |
20754 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20755 | ||
9c541725 | 20756 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20757 | |
a738430d | 20758 | /* Read in the header. */ |
6e70227d | 20759 | lh->total_length = |
c764a876 DE |
20760 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20761 | &bytes_read, &offset_size); | |
debd256d | 20762 | line_ptr += bytes_read; |
7ba99d21 AT |
20763 | |
20764 | const gdb_byte *start_here = line_ptr; | |
20765 | ||
3019eac3 | 20766 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20767 | { |
4d3c2250 | 20768 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20769 | return 0; |
20770 | } | |
7ba99d21 | 20771 | lh->statement_program_end = start_here + lh->total_length; |
debd256d JB |
20772 | lh->version = read_2_bytes (abfd, line_ptr); |
20773 | line_ptr += 2; | |
43988095 | 20774 | if (lh->version > 5) |
cd366ee8 DE |
20775 | { |
20776 | /* This is a version we don't understand. The format could have | |
20777 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20778 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20779 | return NULL; |
20780 | } | |
43988095 JK |
20781 | if (lh->version >= 5) |
20782 | { | |
20783 | gdb_byte segment_selector_size; | |
20784 | ||
20785 | /* Skip address size. */ | |
20786 | read_1_byte (abfd, line_ptr); | |
20787 | line_ptr += 1; | |
20788 | ||
20789 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20790 | line_ptr += 1; | |
20791 | if (segment_selector_size != 0) | |
20792 | { | |
b98664d3 | 20793 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20794 | "in .debug_line section"), |
20795 | segment_selector_size); | |
20796 | return NULL; | |
20797 | } | |
20798 | } | |
c764a876 DE |
20799 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20800 | line_ptr += offset_size; | |
7ba99d21 | 20801 | lh->statement_program_start = line_ptr + lh->header_length; |
debd256d JB |
20802 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20803 | line_ptr += 1; | |
2dc7f7b3 TT |
20804 | if (lh->version >= 4) |
20805 | { | |
20806 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20807 | line_ptr += 1; | |
20808 | } | |
20809 | else | |
20810 | lh->maximum_ops_per_instruction = 1; | |
20811 | ||
20812 | if (lh->maximum_ops_per_instruction == 0) | |
20813 | { | |
20814 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20815 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20816 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20817 | } |
20818 | ||
debd256d JB |
20819 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20820 | line_ptr += 1; | |
20821 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20822 | line_ptr += 1; | |
20823 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20824 | line_ptr += 1; | |
20825 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20826 | line_ptr += 1; | |
fff8551c | 20827 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20828 | |
20829 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20830 | for (i = 1; i < lh->opcode_base; ++i) | |
20831 | { | |
20832 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20833 | line_ptr += 1; | |
20834 | } | |
20835 | ||
43988095 | 20836 | if (lh->version >= 5) |
debd256d | 20837 | { |
43988095 | 20838 | /* Read directory table. */ |
ed2dc618 SM |
20839 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20840 | &cu->header, | |
b926417a | 20841 | [] (struct line_header *header, const char *name, |
ecfb656c | 20842 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20843 | unsigned int length) |
20844 | { | |
b926417a | 20845 | header->add_include_dir (name); |
fff8551c | 20846 | }); |
debd256d | 20847 | |
43988095 | 20848 | /* Read file name table. */ |
ed2dc618 SM |
20849 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20850 | &cu->header, | |
b926417a | 20851 | [] (struct line_header *header, const char *name, |
ecfb656c | 20852 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20853 | unsigned int length) |
20854 | { | |
b926417a | 20855 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20856 | }); |
43988095 JK |
20857 | } |
20858 | else | |
debd256d | 20859 | { |
43988095 JK |
20860 | /* Read directory table. */ |
20861 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20862 | { | |
20863 | line_ptr += bytes_read; | |
fff8551c | 20864 | lh->add_include_dir (cur_dir); |
43988095 | 20865 | } |
debd256d JB |
20866 | line_ptr += bytes_read; |
20867 | ||
43988095 JK |
20868 | /* Read file name table. */ |
20869 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20870 | { | |
ecfb656c PA |
20871 | unsigned int mod_time, length; |
20872 | dir_index d_index; | |
43988095 JK |
20873 | |
20874 | line_ptr += bytes_read; | |
ecfb656c | 20875 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20876 | line_ptr += bytes_read; |
20877 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20878 | line_ptr += bytes_read; | |
20879 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20880 | line_ptr += bytes_read; | |
20881 | ||
ecfb656c | 20882 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20883 | } |
20884 | line_ptr += bytes_read; | |
debd256d | 20885 | } |
debd256d | 20886 | |
3019eac3 | 20887 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20888 | complaint (_("line number info header doesn't " |
3e43a32a | 20889 | "fit in `.debug_line' section")); |
debd256d | 20890 | |
debd256d JB |
20891 | return lh; |
20892 | } | |
c906108c | 20893 | |
c6da4cef | 20894 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20895 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20896 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20897 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20898 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20899 | |
d521ce57 | 20900 | static const char * |
7ba99d21 | 20901 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20902 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20903 | const char *comp_dir, |
20904 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20905 | { |
d521ce57 TT |
20906 | const char *include_name = fe.name; |
20907 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20908 | const char *pst_filename; |
c6da4cef DE |
20909 | int file_is_pst; |
20910 | ||
8c43009f | 20911 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20912 | |
c89b44cd | 20913 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20914 | if (!IS_ABSOLUTE_PATH (include_name) |
20915 | && (dir_name != NULL || comp_dir != NULL)) | |
20916 | { | |
20917 | /* Avoid creating a duplicate psymtab for PST. | |
20918 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20919 | Before we do the comparison, however, we need to account | |
20920 | for DIR_NAME and COMP_DIR. | |
20921 | First prepend dir_name (if non-NULL). If we still don't | |
20922 | have an absolute path prepend comp_dir (if non-NULL). | |
20923 | However, the directory we record in the include-file's | |
20924 | psymtab does not contain COMP_DIR (to match the | |
20925 | corresponding symtab(s)). | |
20926 | ||
20927 | Example: | |
20928 | ||
20929 | bash$ cd /tmp | |
20930 | bash$ gcc -g ./hello.c | |
20931 | include_name = "hello.c" | |
20932 | dir_name = "." | |
20933 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20934 | DW_AT_name = "./hello.c" |
20935 | ||
20936 | */ | |
c6da4cef DE |
20937 | |
20938 | if (dir_name != NULL) | |
20939 | { | |
c89b44cd TT |
20940 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20941 | include_name, (char *) NULL)); | |
20942 | include_name = name_holder->get (); | |
c6da4cef | 20943 | include_name_to_compare = include_name; |
c6da4cef DE |
20944 | } |
20945 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20946 | { | |
c89b44cd TT |
20947 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20948 | include_name, (char *) NULL)); | |
20949 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20950 | } |
20951 | } | |
20952 | ||
20953 | pst_filename = pst->filename; | |
c89b44cd | 20954 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20955 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20956 | { | |
c89b44cd TT |
20957 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20958 | pst_filename, (char *) NULL)); | |
20959 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20960 | } |
20961 | ||
1e3fad37 | 20962 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20963 | |
c6da4cef DE |
20964 | if (file_is_pst) |
20965 | return NULL; | |
20966 | return include_name; | |
20967 | } | |
20968 | ||
d9b3de22 DE |
20969 | /* State machine to track the state of the line number program. */ |
20970 | ||
6f77053d | 20971 | class lnp_state_machine |
d9b3de22 | 20972 | { |
6f77053d PA |
20973 | public: |
20974 | /* Initialize a machine state for the start of a line number | |
20975 | program. */ | |
804d2729 TT |
20976 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20977 | bool record_lines_p); | |
6f77053d | 20978 | |
8c43009f PA |
20979 | file_entry *current_file () |
20980 | { | |
20981 | /* lh->file_names is 0-based, but the file name numbers in the | |
20982 | statement program are 1-based. */ | |
6f77053d PA |
20983 | return m_line_header->file_name_at (m_file); |
20984 | } | |
20985 | ||
20986 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20987 | we're processing the end of a sequence. */ | |
20988 | void record_line (bool end_sequence); | |
20989 | ||
7ab6656f OJ |
20990 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20991 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20992 | void check_line_address (struct dwarf2_cu *cu, |
20993 | const gdb_byte *line_ptr, | |
7ab6656f | 20994 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20995 | |
20996 | void handle_set_discriminator (unsigned int discriminator) | |
20997 | { | |
20998 | m_discriminator = discriminator; | |
20999 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21000 | } | |
21001 | ||
21002 | /* Handle DW_LNE_set_address. */ | |
21003 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21004 | { | |
21005 | m_op_index = 0; | |
21006 | address += baseaddr; | |
21007 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21008 | } | |
21009 | ||
21010 | /* Handle DW_LNS_advance_pc. */ | |
21011 | void handle_advance_pc (CORE_ADDR adjust); | |
21012 | ||
21013 | /* Handle a special opcode. */ | |
21014 | void handle_special_opcode (unsigned char op_code); | |
21015 | ||
21016 | /* Handle DW_LNS_advance_line. */ | |
21017 | void handle_advance_line (int line_delta) | |
21018 | { | |
21019 | advance_line (line_delta); | |
21020 | } | |
21021 | ||
21022 | /* Handle DW_LNS_set_file. */ | |
21023 | void handle_set_file (file_name_index file); | |
21024 | ||
21025 | /* Handle DW_LNS_negate_stmt. */ | |
21026 | void handle_negate_stmt () | |
21027 | { | |
21028 | m_is_stmt = !m_is_stmt; | |
21029 | } | |
21030 | ||
21031 | /* Handle DW_LNS_const_add_pc. */ | |
21032 | void handle_const_add_pc (); | |
21033 | ||
21034 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21035 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21036 | { | |
21037 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21038 | m_op_index = 0; | |
21039 | } | |
21040 | ||
21041 | /* Handle DW_LNS_copy. */ | |
21042 | void handle_copy () | |
21043 | { | |
21044 | record_line (false); | |
21045 | m_discriminator = 0; | |
21046 | } | |
21047 | ||
21048 | /* Handle DW_LNE_end_sequence. */ | |
21049 | void handle_end_sequence () | |
21050 | { | |
804d2729 | 21051 | m_currently_recording_lines = true; |
6f77053d PA |
21052 | } |
21053 | ||
21054 | private: | |
21055 | /* Advance the line by LINE_DELTA. */ | |
21056 | void advance_line (int line_delta) | |
21057 | { | |
21058 | m_line += line_delta; | |
21059 | ||
21060 | if (line_delta != 0) | |
21061 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21062 | } |
21063 | ||
804d2729 TT |
21064 | struct dwarf2_cu *m_cu; |
21065 | ||
6f77053d PA |
21066 | gdbarch *m_gdbarch; |
21067 | ||
21068 | /* True if we're recording lines. | |
21069 | Otherwise we're building partial symtabs and are just interested in | |
21070 | finding include files mentioned by the line number program. */ | |
21071 | bool m_record_lines_p; | |
21072 | ||
8c43009f | 21073 | /* The line number header. */ |
6f77053d | 21074 | line_header *m_line_header; |
8c43009f | 21075 | |
6f77053d PA |
21076 | /* These are part of the standard DWARF line number state machine, |
21077 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21078 | |
6f77053d | 21079 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21080 | /* The line table index of the current file. */ |
21081 | file_name_index m_file = 1; | |
6f77053d PA |
21082 | unsigned int m_line = 1; |
21083 | ||
21084 | /* These are initialized in the constructor. */ | |
21085 | ||
21086 | CORE_ADDR m_address; | |
21087 | bool m_is_stmt; | |
21088 | unsigned int m_discriminator; | |
d9b3de22 DE |
21089 | |
21090 | /* Additional bits of state we need to track. */ | |
21091 | ||
21092 | /* The last file that we called dwarf2_start_subfile for. | |
21093 | This is only used for TLLs. */ | |
6f77053d | 21094 | unsigned int m_last_file = 0; |
d9b3de22 | 21095 | /* The last file a line number was recorded for. */ |
6f77053d | 21096 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21097 | |
804d2729 TT |
21098 | /* When true, record the lines we decode. */ |
21099 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21100 | |
21101 | /* The last line number that was recorded, used to coalesce | |
21102 | consecutive entries for the same line. This can happen, for | |
21103 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21104 | unsigned int m_last_line = 0; |
21105 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21106 | }; |
d9b3de22 | 21107 | |
6f77053d PA |
21108 | void |
21109 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21110 | { | |
21111 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21112 | / m_line_header->maximum_ops_per_instruction) | |
21113 | * m_line_header->minimum_instruction_length); | |
21114 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21115 | m_op_index = ((m_op_index + adjust) | |
21116 | % m_line_header->maximum_ops_per_instruction); | |
21117 | } | |
d9b3de22 | 21118 | |
6f77053d PA |
21119 | void |
21120 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21121 | { |
6f77053d PA |
21122 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
21123 | CORE_ADDR addr_adj = (((m_op_index | |
21124 | + (adj_opcode / m_line_header->line_range)) | |
21125 | / m_line_header->maximum_ops_per_instruction) | |
21126 | * m_line_header->minimum_instruction_length); | |
21127 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21128 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
21129 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 21130 | |
6f77053d PA |
21131 | int line_delta = (m_line_header->line_base |
21132 | + (adj_opcode % m_line_header->line_range)); | |
21133 | advance_line (line_delta); | |
21134 | record_line (false); | |
21135 | m_discriminator = 0; | |
21136 | } | |
d9b3de22 | 21137 | |
6f77053d PA |
21138 | void |
21139 | lnp_state_machine::handle_set_file (file_name_index file) | |
21140 | { | |
21141 | m_file = file; | |
21142 | ||
21143 | const file_entry *fe = current_file (); | |
21144 | if (fe == NULL) | |
21145 | dwarf2_debug_line_missing_file_complaint (); | |
21146 | else if (m_record_lines_p) | |
21147 | { | |
21148 | const char *dir = fe->include_dir (m_line_header); | |
21149 | ||
c24bdb02 | 21150 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21151 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21152 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21153 | } |
21154 | } | |
21155 | ||
21156 | void | |
21157 | lnp_state_machine::handle_const_add_pc () | |
21158 | { | |
21159 | CORE_ADDR adjust | |
21160 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21161 | ||
21162 | CORE_ADDR addr_adj | |
21163 | = (((m_op_index + adjust) | |
21164 | / m_line_header->maximum_ops_per_instruction) | |
21165 | * m_line_header->minimum_instruction_length); | |
21166 | ||
21167 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21168 | m_op_index = ((m_op_index + adjust) | |
21169 | % m_line_header->maximum_ops_per_instruction); | |
21170 | } | |
d9b3de22 | 21171 | |
a05a36a5 DE |
21172 | /* Return non-zero if we should add LINE to the line number table. |
21173 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21174 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21175 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21176 | had a non-zero discriminator. | |
21177 | ||
21178 | We have to be careful in the presence of discriminators. | |
21179 | E.g., for this line: | |
21180 | ||
21181 | for (i = 0; i < 100000; i++); | |
21182 | ||
21183 | clang can emit four line number entries for that one line, | |
21184 | each with a different discriminator. | |
21185 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21186 | ||
21187 | However, we want gdb to coalesce all four entries into one. | |
21188 | Otherwise the user could stepi into the middle of the line and | |
21189 | gdb would get confused about whether the pc really was in the | |
21190 | middle of the line. | |
21191 | ||
21192 | Things are further complicated by the fact that two consecutive | |
21193 | line number entries for the same line is a heuristic used by gcc | |
21194 | to denote the end of the prologue. So we can't just discard duplicate | |
21195 | entries, we have to be selective about it. The heuristic we use is | |
21196 | that we only collapse consecutive entries for the same line if at least | |
21197 | one of those entries has a non-zero discriminator. PR 17276. | |
21198 | ||
21199 | Note: Addresses in the line number state machine can never go backwards | |
21200 | within one sequence, thus this coalescing is ok. */ | |
21201 | ||
21202 | static int | |
804d2729 TT |
21203 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21204 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21205 | int line_has_non_zero_discriminator, |
21206 | struct subfile *last_subfile) | |
21207 | { | |
c24bdb02 | 21208 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21209 | return 1; |
21210 | if (line != last_line) | |
21211 | return 1; | |
21212 | /* Same line for the same file that we've seen already. | |
21213 | As a last check, for pr 17276, only record the line if the line | |
21214 | has never had a non-zero discriminator. */ | |
21215 | if (!line_has_non_zero_discriminator) | |
21216 | return 1; | |
21217 | return 0; | |
21218 | } | |
21219 | ||
804d2729 TT |
21220 | /* Use the CU's builder to record line number LINE beginning at |
21221 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21222 | |
21223 | static void | |
d9b3de22 DE |
21224 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
21225 | unsigned int line, CORE_ADDR address, | |
804d2729 | 21226 | struct dwarf2_cu *cu) |
252a6764 DE |
21227 | { |
21228 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21229 | ||
27e0867f DE |
21230 | if (dwarf_line_debug) |
21231 | { | |
21232 | fprintf_unfiltered (gdb_stdlog, | |
21233 | "Recording line %u, file %s, address %s\n", | |
21234 | line, lbasename (subfile->name), | |
21235 | paddress (gdbarch, address)); | |
21236 | } | |
21237 | ||
804d2729 | 21238 | if (cu != nullptr) |
c24bdb02 | 21239 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
21240 | } |
21241 | ||
21242 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21243 | Mark the end of a set of line number records. | |
d9b3de22 | 21244 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21245 | If SUBFILE is NULL the request is ignored. */ |
21246 | ||
21247 | static void | |
21248 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21249 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21250 | { |
27e0867f DE |
21251 | if (subfile == NULL) |
21252 | return; | |
21253 | ||
21254 | if (dwarf_line_debug) | |
21255 | { | |
21256 | fprintf_unfiltered (gdb_stdlog, | |
21257 | "Finishing current line, file %s, address %s\n", | |
21258 | lbasename (subfile->name), | |
21259 | paddress (gdbarch, address)); | |
21260 | } | |
21261 | ||
804d2729 | 21262 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
21263 | } |
21264 | ||
6f77053d PA |
21265 | void |
21266 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21267 | { |
d9b3de22 DE |
21268 | if (dwarf_line_debug) |
21269 | { | |
21270 | fprintf_unfiltered (gdb_stdlog, | |
21271 | "Processing actual line %u: file %u," | |
94a72be7 | 21272 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21273 | m_line, m_file, |
6f77053d | 21274 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21275 | m_is_stmt, m_discriminator, |
21276 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21277 | } |
21278 | ||
6f77053d | 21279 | file_entry *fe = current_file (); |
8c43009f PA |
21280 | |
21281 | if (fe == NULL) | |
d9b3de22 DE |
21282 | dwarf2_debug_line_missing_file_complaint (); |
21283 | /* For now we ignore lines not starting on an instruction boundary. | |
21284 | But not when processing end_sequence for compatibility with the | |
21285 | previous version of the code. */ | |
6f77053d | 21286 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21287 | { |
8c43009f | 21288 | fe->included_p = 1; |
94a72be7 AB |
21289 | if (m_record_lines_p |
21290 | && (producer_is_codewarrior (m_cu) || m_is_stmt || end_sequence)) | |
d9b3de22 | 21291 | { |
c24bdb02 | 21292 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 21293 | || end_sequence) |
d9b3de22 | 21294 | { |
804d2729 TT |
21295 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21296 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21297 | } |
21298 | ||
21299 | if (!end_sequence) | |
21300 | { | |
804d2729 | 21301 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21302 | m_line_has_non_zero_discriminator, |
21303 | m_last_subfile)) | |
d9b3de22 | 21304 | { |
c24bdb02 | 21305 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21306 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21307 | builder->get_current_subfile (), |
6f77053d | 21308 | m_line, m_address, |
804d2729 | 21309 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21310 | } |
c24bdb02 | 21311 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21312 | m_last_line = m_line; |
d9b3de22 DE |
21313 | } |
21314 | } | |
21315 | } | |
21316 | } | |
21317 | ||
804d2729 TT |
21318 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21319 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21320 | { |
804d2729 | 21321 | m_cu = cu; |
6f77053d PA |
21322 | m_gdbarch = arch; |
21323 | m_record_lines_p = record_lines_p; | |
21324 | m_line_header = lh; | |
d9b3de22 | 21325 | |
804d2729 | 21326 | m_currently_recording_lines = true; |
d9b3de22 | 21327 | |
d9b3de22 DE |
21328 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21329 | was a line entry for it so that the backend has a chance to adjust it | |
21330 | and also record it in case it needs it. This is currently used by MIPS | |
21331 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21332 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21333 | m_is_stmt = lh->default_is_stmt; | |
21334 | m_discriminator = 0; | |
252a6764 DE |
21335 | } |
21336 | ||
6f77053d PA |
21337 | void |
21338 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21339 | const gdb_byte *line_ptr, | |
7ab6656f | 21340 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21341 | { |
7ab6656f OJ |
21342 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
21343 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
21344 | values of zero to preserve GDB's previous behaviour which is to handle | |
21345 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 21346 | |
7ab6656f | 21347 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
21348 | { |
21349 | /* This line table is for a function which has been | |
21350 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21351 | ||
518817b3 | 21352 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
21353 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21354 | ||
b98664d3 | 21355 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21356 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21357 | m_currently_recording_lines = false; |
21358 | /* Note: m_currently_recording_lines is left as false until we see | |
21359 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21360 | } |
21361 | } | |
21362 | ||
f3f5162e | 21363 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21364 | Process the line number information in LH. |
21365 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21366 | program in order to set included_p for every referenced header. */ | |
debd256d | 21367 | |
c906108c | 21368 | static void |
43f3e411 DE |
21369 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21370 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21371 | { |
d521ce57 TT |
21372 | const gdb_byte *line_ptr, *extended_end; |
21373 | const gdb_byte *line_end; | |
a8c50c1f | 21374 | unsigned int bytes_read, extended_len; |
699ca60a | 21375 | unsigned char op_code, extended_op; |
e142c38c | 21376 | CORE_ADDR baseaddr; |
518817b3 | 21377 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21378 | bfd *abfd = objfile->obfd; |
fbf65064 | 21379 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
21380 | /* True if we're recording line info (as opposed to building partial |
21381 | symtabs and just interested in finding include files mentioned by | |
21382 | the line number program). */ | |
21383 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21384 | |
b3b3bada | 21385 | baseaddr = objfile->text_section_offset (); |
c906108c | 21386 | |
debd256d JB |
21387 | line_ptr = lh->statement_program_start; |
21388 | line_end = lh->statement_program_end; | |
c906108c SS |
21389 | |
21390 | /* Read the statement sequences until there's nothing left. */ | |
21391 | while (line_ptr < line_end) | |
21392 | { | |
6f77053d PA |
21393 | /* The DWARF line number program state machine. Reset the state |
21394 | machine at the start of each sequence. */ | |
804d2729 | 21395 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21396 | bool end_sequence = false; |
d9b3de22 | 21397 | |
8c43009f | 21398 | if (record_lines_p) |
c906108c | 21399 | { |
8c43009f PA |
21400 | /* Start a subfile for the current file of the state |
21401 | machine. */ | |
21402 | const file_entry *fe = state_machine.current_file (); | |
21403 | ||
21404 | if (fe != NULL) | |
804d2729 | 21405 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21406 | } |
21407 | ||
a738430d | 21408 | /* Decode the table. */ |
d9b3de22 | 21409 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21410 | { |
21411 | op_code = read_1_byte (abfd, line_ptr); | |
21412 | line_ptr += 1; | |
9aa1fe7e | 21413 | |
debd256d | 21414 | if (op_code >= lh->opcode_base) |
6e70227d | 21415 | { |
8e07a239 | 21416 | /* Special opcode. */ |
6f77053d | 21417 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21418 | } |
21419 | else switch (op_code) | |
c906108c SS |
21420 | { |
21421 | case DW_LNS_extended_op: | |
3e43a32a MS |
21422 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21423 | &bytes_read); | |
473b7be6 | 21424 | line_ptr += bytes_read; |
a8c50c1f | 21425 | extended_end = line_ptr + extended_len; |
c906108c SS |
21426 | extended_op = read_1_byte (abfd, line_ptr); |
21427 | line_ptr += 1; | |
21428 | switch (extended_op) | |
21429 | { | |
21430 | case DW_LNE_end_sequence: | |
6f77053d PA |
21431 | state_machine.handle_end_sequence (); |
21432 | end_sequence = true; | |
c906108c SS |
21433 | break; |
21434 | case DW_LNE_set_address: | |
d9b3de22 DE |
21435 | { |
21436 | CORE_ADDR address | |
21437 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 21438 | line_ptr += bytes_read; |
6f77053d PA |
21439 | |
21440 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21441 | lowpc - baseaddr, address); |
6f77053d | 21442 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21443 | } |
c906108c SS |
21444 | break; |
21445 | case DW_LNE_define_file: | |
debd256d | 21446 | { |
d521ce57 | 21447 | const char *cur_file; |
ecfb656c PA |
21448 | unsigned int mod_time, length; |
21449 | dir_index dindex; | |
6e70227d | 21450 | |
3e43a32a MS |
21451 | cur_file = read_direct_string (abfd, line_ptr, |
21452 | &bytes_read); | |
debd256d | 21453 | line_ptr += bytes_read; |
ecfb656c | 21454 | dindex = (dir_index) |
debd256d JB |
21455 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21456 | line_ptr += bytes_read; | |
21457 | mod_time = | |
21458 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21459 | line_ptr += bytes_read; | |
21460 | length = | |
21461 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21462 | line_ptr += bytes_read; | |
ecfb656c | 21463 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21464 | } |
c906108c | 21465 | break; |
d0c6ba3d | 21466 | case DW_LNE_set_discriminator: |
6f77053d PA |
21467 | { |
21468 | /* The discriminator is not interesting to the | |
21469 | debugger; just ignore it. We still need to | |
21470 | check its value though: | |
21471 | if there are consecutive entries for the same | |
21472 | (non-prologue) line we want to coalesce them. | |
21473 | PR 17276. */ | |
21474 | unsigned int discr | |
21475 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21476 | line_ptr += bytes_read; | |
21477 | ||
21478 | state_machine.handle_set_discriminator (discr); | |
21479 | } | |
d0c6ba3d | 21480 | break; |
c906108c | 21481 | default: |
b98664d3 | 21482 | complaint (_("mangled .debug_line section")); |
debd256d | 21483 | return; |
c906108c | 21484 | } |
a8c50c1f DJ |
21485 | /* Make sure that we parsed the extended op correctly. If e.g. |
21486 | we expected a different address size than the producer used, | |
21487 | we may have read the wrong number of bytes. */ | |
21488 | if (line_ptr != extended_end) | |
21489 | { | |
b98664d3 | 21490 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21491 | return; |
21492 | } | |
c906108c SS |
21493 | break; |
21494 | case DW_LNS_copy: | |
6f77053d | 21495 | state_machine.handle_copy (); |
c906108c SS |
21496 | break; |
21497 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21498 | { |
21499 | CORE_ADDR adjust | |
21500 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21501 | line_ptr += bytes_read; |
6f77053d PA |
21502 | |
21503 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21504 | } |
c906108c SS |
21505 | break; |
21506 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21507 | { |
21508 | int line_delta | |
21509 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21510 | line_ptr += bytes_read; |
6f77053d PA |
21511 | |
21512 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21513 | } |
c906108c SS |
21514 | break; |
21515 | case DW_LNS_set_file: | |
d9b3de22 | 21516 | { |
6f77053d | 21517 | file_name_index file |
ecfb656c PA |
21518 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21519 | &bytes_read); | |
d9b3de22 | 21520 | line_ptr += bytes_read; |
8c43009f | 21521 | |
6f77053d | 21522 | state_machine.handle_set_file (file); |
d9b3de22 | 21523 | } |
c906108c SS |
21524 | break; |
21525 | case DW_LNS_set_column: | |
0ad93d4f | 21526 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21527 | line_ptr += bytes_read; |
21528 | break; | |
21529 | case DW_LNS_negate_stmt: | |
6f77053d | 21530 | state_machine.handle_negate_stmt (); |
c906108c SS |
21531 | break; |
21532 | case DW_LNS_set_basic_block: | |
c906108c | 21533 | break; |
c2c6d25f JM |
21534 | /* Add to the address register of the state machine the |
21535 | address increment value corresponding to special opcode | |
a738430d MK |
21536 | 255. I.e., this value is scaled by the minimum |
21537 | instruction length since special opcode 255 would have | |
b021a221 | 21538 | scaled the increment. */ |
c906108c | 21539 | case DW_LNS_const_add_pc: |
6f77053d | 21540 | state_machine.handle_const_add_pc (); |
c906108c SS |
21541 | break; |
21542 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21543 | { |
6f77053d | 21544 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21545 | line_ptr += 2; |
6f77053d PA |
21546 | |
21547 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21548 | } |
c906108c | 21549 | break; |
9aa1fe7e | 21550 | default: |
a738430d MK |
21551 | { |
21552 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21553 | int i; |
a738430d | 21554 | |
debd256d | 21555 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21556 | { |
21557 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21558 | line_ptr += bytes_read; | |
21559 | } | |
21560 | } | |
c906108c SS |
21561 | } |
21562 | } | |
d9b3de22 DE |
21563 | |
21564 | if (!end_sequence) | |
21565 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21566 | ||
21567 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21568 | in which case we still finish recording the last line). */ | |
6f77053d | 21569 | state_machine.record_line (true); |
c906108c | 21570 | } |
f3f5162e DE |
21571 | } |
21572 | ||
21573 | /* Decode the Line Number Program (LNP) for the given line_header | |
21574 | structure and CU. The actual information extracted and the type | |
21575 | of structures created from the LNP depends on the value of PST. | |
21576 | ||
21577 | 1. If PST is NULL, then this procedure uses the data from the program | |
21578 | to create all necessary symbol tables, and their linetables. | |
21579 | ||
21580 | 2. If PST is not NULL, this procedure reads the program to determine | |
21581 | the list of files included by the unit represented by PST, and | |
21582 | builds all the associated partial symbol tables. | |
21583 | ||
21584 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21585 | It is used for relative paths in the line table. | |
21586 | NOTE: When processing partial symtabs (pst != NULL), | |
21587 | comp_dir == pst->dirname. | |
21588 | ||
21589 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21590 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21591 | symtab we don't use it in the name of the psymtabs we create. | |
21592 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21593 | A good testcase for this is mb-inline.exp. |
21594 | ||
527f3840 JK |
21595 | LOWPC is the lowest address in CU (or 0 if not known). |
21596 | ||
21597 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21598 | for its PC<->lines mapping information. Otherwise only the filename | |
21599 | table is read in. */ | |
f3f5162e DE |
21600 | |
21601 | static void | |
21602 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21603 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21604 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21605 | { |
518817b3 | 21606 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21607 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21608 | |
527f3840 JK |
21609 | if (decode_mapping) |
21610 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21611 | |
21612 | if (decode_for_pst_p) | |
21613 | { | |
aaa75496 JB |
21614 | /* Now that we're done scanning the Line Header Program, we can |
21615 | create the psymtab of each included file. */ | |
7ba99d21 AT |
21616 | for (auto &file_entry : lh->file_names ()) |
21617 | if (file_entry.included_p == 1) | |
aaa75496 | 21618 | { |
c89b44cd | 21619 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21620 | const char *include_name = |
7ba99d21 AT |
21621 | psymtab_include_file_name (lh, file_entry, pst, |
21622 | comp_dir, &name_holder); | |
c6da4cef | 21623 | if (include_name != NULL) |
aaa75496 JB |
21624 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21625 | } | |
21626 | } | |
cb1df416 DJ |
21627 | else |
21628 | { | |
21629 | /* Make sure a symtab is created for every file, even files | |
21630 | which contain only variables (i.e. no code with associated | |
21631 | line numbers). */ | |
c24bdb02 KS |
21632 | buildsym_compunit *builder = cu->get_builder (); |
21633 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21634 | |
7ba99d21 | 21635 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21636 | { |
804d2729 | 21637 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21638 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21639 | { |
c24bdb02 | 21640 | builder->get_current_subfile ()->symtab |
804d2729 | 21641 | = allocate_symtab (cust, |
c24bdb02 | 21642 | builder->get_current_subfile ()->name); |
43f3e411 | 21643 | } |
c24bdb02 | 21644 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21645 | } |
21646 | } | |
c906108c SS |
21647 | } |
21648 | ||
21649 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21650 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21651 | or NULL if not known. |
c906108c SS |
21652 | This routine tries to keep line numbers from identical absolute and |
21653 | relative file names in a common subfile. | |
21654 | ||
21655 | Using the `list' example from the GDB testsuite, which resides in | |
21656 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21657 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21658 | ||
c5aa993b | 21659 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21660 | DW_AT_comp_dir: /compdir |
357e46e7 | 21661 | files.files[0].name: list0.h |
c5aa993b | 21662 | files.files[0].dir: /srcdir |
357e46e7 | 21663 | files.files[1].name: list0.c |
c5aa993b | 21664 | files.files[1].dir: /srcdir |
c906108c SS |
21665 | |
21666 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21667 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21668 | start_subfile will ensure that this happens provided that we pass the | |
21669 | concatenation of files.files[1].dir and files.files[1].name as the | |
21670 | subfile's name. */ | |
c906108c SS |
21671 | |
21672 | static void | |
804d2729 TT |
21673 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21674 | const char *dirname) | |
c906108c | 21675 | { |
43816ebc | 21676 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21677 | |
4d663531 | 21678 | /* In order not to lose the line information directory, |
4f1520fb FR |
21679 | we concatenate it to the filename when it makes sense. |
21680 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21681 | information): ``The directory index is ignored for file names | |
21682 | that represent full path names''. Thus ignoring dirname in the | |
21683 | `else' branch below isn't an issue. */ | |
c906108c | 21684 | |
d5166ae1 | 21685 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21686 | { |
43816ebc TT |
21687 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21688 | filename = copy.get (); | |
d521ce57 | 21689 | } |
c906108c | 21690 | |
c24bdb02 | 21691 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21692 | } |
21693 | ||
804d2729 TT |
21694 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21695 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21696 | |
c24bdb02 KS |
21697 | struct compunit_symtab * |
21698 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21699 | CORE_ADDR low_pc) | |
f4dc4d17 | 21700 | { |
c24bdb02 | 21701 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21702 | |
c24bdb02 KS |
21703 | m_builder.reset (new struct buildsym_compunit |
21704 | (per_cu->dwarf2_per_objfile->objfile, | |
21705 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 21706 | |
c24bdb02 | 21707 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21708 | |
c24bdb02 KS |
21709 | get_builder ()->record_debugformat ("DWARF 2"); |
21710 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21711 | |
c24bdb02 | 21712 | processing_has_namespace_info = false; |
43f3e411 | 21713 | |
c24bdb02 | 21714 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21715 | } |
21716 | ||
4c2df51b DJ |
21717 | static void |
21718 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21719 | struct dwarf2_cu *cu) |
4c2df51b | 21720 | { |
518817b3 | 21721 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21722 | struct comp_unit_head *cu_header = &cu->header; |
21723 | ||
4c2df51b DJ |
21724 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21725 | code here to turn a symbol with DW_AT_external and a | |
21726 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21727 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21728 | with some versions of binutils) where shared libraries could have | |
21729 | relocations against symbols in their debug information - the | |
21730 | minimal symbol would have the right address, but the debug info | |
21731 | would not. It's no longer necessary, because we will explicitly | |
21732 | apply relocations when we read in the debug information now. */ | |
21733 | ||
21734 | /* A DW_AT_location attribute with no contents indicates that a | |
21735 | variable has been optimized away. */ | |
21736 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21737 | { | |
f1e6e072 | 21738 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21739 | return; |
21740 | } | |
21741 | ||
21742 | /* Handle one degenerate form of location expression specially, to | |
21743 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21744 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21745 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21746 | |
21747 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21748 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21749 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21750 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21751 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21752 | && (DW_BLOCK (attr)->size |
21753 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21754 | { |
891d2f0b | 21755 | unsigned int dummy; |
4c2df51b | 21756 | |
3019eac3 | 21757 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
38583298 TT |
21758 | SET_SYMBOL_VALUE_ADDRESS (sym, |
21759 | read_address (objfile->obfd, | |
21760 | DW_BLOCK (attr)->data + 1, | |
21761 | cu, &dummy)); | |
3019eac3 | 21762 | else |
38583298 TT |
21763 | SET_SYMBOL_VALUE_ADDRESS |
21764 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
21765 | &dummy)); | |
f1e6e072 | 21766 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 21767 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
21768 | SET_SYMBOL_VALUE_ADDRESS |
21769 | (sym, | |
21770 | SYMBOL_VALUE_ADDRESS (sym) | |
21771 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
21772 | return; |
21773 | } | |
21774 | ||
21775 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21776 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21777 | (i.e. when the value of a register or memory location is | |
21778 | referenced, or a thread-local block, etc.). Then again, it might | |
21779 | not be worthwhile. I'm assuming that it isn't unless performance | |
21780 | or memory numbers show me otherwise. */ | |
21781 | ||
f1e6e072 | 21782 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21783 | |
f1e6e072 | 21784 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21785 | cu->has_loclist = true; |
4c2df51b DJ |
21786 | } |
21787 | ||
c906108c SS |
21788 | /* Given a pointer to a DWARF information entry, figure out if we need |
21789 | to make a symbol table entry for it, and if so, create a new entry | |
21790 | and return a pointer to it. | |
21791 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21792 | used the passed type. |
21793 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21794 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21795 | |
21796 | static struct symbol * | |
5e2db402 TT |
21797 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21798 | struct symbol *space) | |
c906108c | 21799 | { |
518817b3 SM |
21800 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21801 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21802 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21803 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21804 | struct symbol *sym = NULL; |
15d034d0 | 21805 | const char *name; |
c906108c SS |
21806 | struct attribute *attr = NULL; |
21807 | struct attribute *attr2 = NULL; | |
e142c38c | 21808 | CORE_ADDR baseaddr; |
e37fd15a SW |
21809 | struct pending **list_to_add = NULL; |
21810 | ||
edb3359d | 21811 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21812 | |
b3b3bada | 21813 | baseaddr = objfile->text_section_offset (); |
c906108c | 21814 | |
94af9270 | 21815 | name = dwarf2_name (die, cu); |
c906108c SS |
21816 | if (name) |
21817 | { | |
94af9270 | 21818 | const char *linkagename; |
34eaf542 | 21819 | int suppress_add = 0; |
94af9270 | 21820 | |
34eaf542 TT |
21821 | if (space) |
21822 | sym = space; | |
21823 | else | |
e623cf5d | 21824 | sym = allocate_symbol (objfile); |
c906108c | 21825 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21826 | |
21827 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21828 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 21829 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 21830 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 21831 | |
f55ee35c JK |
21832 | /* Fortran does not have mangling standard and the mangling does differ |
21833 | between gfortran, iFort etc. */ | |
21834 | if (cu->language == language_fortran | |
468c0cbb CB |
21835 | && symbol_get_demangled_name (sym) == NULL) |
21836 | symbol_set_demangled_name (sym, | |
cfc594ee | 21837 | dwarf2_full_name (name, die, cu), |
29df156d | 21838 | NULL); |
f55ee35c | 21839 | |
c906108c | 21840 | /* Default assumptions. |
c5aa993b | 21841 | Use the passed type or decode it from the die. */ |
176620f1 | 21842 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21843 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21844 | if (type != NULL) |
21845 | SYMBOL_TYPE (sym) = type; | |
21846 | else | |
e7c27a73 | 21847 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21848 | attr = dwarf2_attr (die, |
21849 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21850 | cu); | |
435d3d88 | 21851 | if (attr != nullptr) |
c906108c SS |
21852 | { |
21853 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21854 | } | |
cb1df416 | 21855 | |
edb3359d DJ |
21856 | attr = dwarf2_attr (die, |
21857 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21858 | cu); | |
435d3d88 | 21859 | if (attr != nullptr) |
cb1df416 | 21860 | { |
ecfb656c | 21861 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21862 | struct file_entry *fe; |
9a619af0 | 21863 | |
ecfb656c PA |
21864 | if (cu->line_header != NULL) |
21865 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21866 | else |
21867 | fe = NULL; | |
21868 | ||
21869 | if (fe == NULL) | |
b98664d3 | 21870 | complaint (_("file index out of range")); |
8c43009f PA |
21871 | else |
21872 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21873 | } |
21874 | ||
c906108c SS |
21875 | switch (die->tag) |
21876 | { | |
21877 | case DW_TAG_label: | |
e142c38c | 21878 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21879 | if (attr != nullptr) |
3e29f34a MR |
21880 | { |
21881 | CORE_ADDR addr; | |
21882 | ||
21883 | addr = attr_value_as_address (attr); | |
21884 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
38583298 | 21885 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 21886 | } |
0f5238ed TT |
21887 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21888 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21889 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21890 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21891 | break; |
21892 | case DW_TAG_subprogram: | |
21893 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21894 | finish_block. */ | |
f1e6e072 | 21895 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21896 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 21897 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
21898 | || cu->language == language_ada |
21899 | || cu->language == language_fortran) | |
c906108c | 21900 | { |
2cfa0c8d | 21901 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
21902 | Ada and Fortran subprograms, whether marked external or |
21903 | not, are always stored as a global symbol, because we want | |
21904 | to be able to access them globally. For instance, we want | |
21905 | to be able to break on a nested subprogram without having | |
21906 | to specify the context. */ | |
c24bdb02 | 21907 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21908 | } |
21909 | else | |
21910 | { | |
e37fd15a | 21911 | list_to_add = cu->list_in_scope; |
c906108c SS |
21912 | } |
21913 | break; | |
edb3359d DJ |
21914 | case DW_TAG_inlined_subroutine: |
21915 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21916 | finish_block. */ | |
f1e6e072 | 21917 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21918 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21919 | list_to_add = cu->list_in_scope; |
edb3359d | 21920 | break; |
34eaf542 TT |
21921 | case DW_TAG_template_value_param: |
21922 | suppress_add = 1; | |
21923 | /* Fall through. */ | |
72929c62 | 21924 | case DW_TAG_constant: |
c906108c | 21925 | case DW_TAG_variable: |
254e6b9e | 21926 | case DW_TAG_member: |
0963b4bd MS |
21927 | /* Compilation with minimal debug info may result in |
21928 | variables with missing type entries. Change the | |
21929 | misleading `void' type to something sensible. */ | |
c906108c | 21930 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21931 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21932 | |
e142c38c | 21933 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21934 | /* In the case of DW_TAG_member, we should only be called for |
21935 | static const members. */ | |
21936 | if (die->tag == DW_TAG_member) | |
21937 | { | |
3863f96c DE |
21938 | /* dwarf2_add_field uses die_is_declaration, |
21939 | so we do the same. */ | |
254e6b9e DE |
21940 | gdb_assert (die_is_declaration (die, cu)); |
21941 | gdb_assert (attr); | |
21942 | } | |
435d3d88 | 21943 | if (attr != nullptr) |
c906108c | 21944 | { |
e7c27a73 | 21945 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21946 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21947 | if (!suppress_add) |
34eaf542 TT |
21948 | { |
21949 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21950 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21951 | else |
e37fd15a | 21952 | list_to_add = cu->list_in_scope; |
34eaf542 | 21953 | } |
c906108c SS |
21954 | break; |
21955 | } | |
e142c38c | 21956 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21957 | if (attr != nullptr) |
c906108c | 21958 | { |
e7c27a73 | 21959 | var_decode_location (attr, sym, cu); |
e142c38c | 21960 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21961 | |
21962 | /* Fortran explicitly imports any global symbols to the local | |
21963 | scope by DW_TAG_common_block. */ | |
21964 | if (cu->language == language_fortran && die->parent | |
21965 | && die->parent->tag == DW_TAG_common_block) | |
21966 | attr2 = NULL; | |
21967 | ||
caac4577 JG |
21968 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21969 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21970 | && !dwarf2_per_objfile->has_section_at_zero) | |
21971 | { | |
21972 | /* When a static variable is eliminated by the linker, | |
21973 | the corresponding debug information is not stripped | |
21974 | out, but the variable address is set to null; | |
21975 | do not add such variables into symbol table. */ | |
21976 | } | |
21977 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21978 | { |
4b610737 TT |
21979 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21980 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
21981 | && dwarf2_per_objfile->can_copy) | |
21982 | { | |
21983 | /* A global static variable might be subject to | |
21984 | copy relocation. We first check for a local | |
21985 | minsym, though, because maybe the symbol was | |
21986 | marked hidden, in which case this would not | |
21987 | apply. */ | |
21988 | bound_minimal_symbol found | |
21989 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21990 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21991 | if (found.minsym != nullptr) |
21992 | sym->maybe_copied = 1; | |
21993 | } | |
f55ee35c | 21994 | |
1c809c68 TT |
21995 | /* A variable with DW_AT_external is never static, |
21996 | but it may be block-scoped. */ | |
804d2729 | 21997 | list_to_add |
c24bdb02 KS |
21998 | = ((cu->list_in_scope |
21999 | == cu->get_builder ()->get_file_symbols ()) | |
22000 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22001 | : cu->list_in_scope); |
1c809c68 | 22002 | } |
c906108c | 22003 | else |
e37fd15a | 22004 | list_to_add = cu->list_in_scope; |
c906108c SS |
22005 | } |
22006 | else | |
22007 | { | |
22008 | /* We do not know the address of this symbol. | |
c5aa993b JM |
22009 | If it is an external symbol and we have type information |
22010 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22011 | The address of the variable will then be determined from | |
22012 | the minimal symbol table whenever the variable is | |
22013 | referenced. */ | |
e142c38c | 22014 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22015 | |
22016 | /* Fortran explicitly imports any global symbols to the local | |
22017 | scope by DW_TAG_common_block. */ | |
22018 | if (cu->language == language_fortran && die->parent | |
22019 | && die->parent->tag == DW_TAG_common_block) | |
22020 | { | |
22021 | /* SYMBOL_CLASS doesn't matter here because | |
22022 | read_common_block is going to reset it. */ | |
22023 | if (!suppress_add) | |
22024 | list_to_add = cu->list_in_scope; | |
22025 | } | |
22026 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
22027 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 22028 | { |
0fe7935b DJ |
22029 | /* A variable with DW_AT_external is never static, but it |
22030 | may be block-scoped. */ | |
804d2729 | 22031 | list_to_add |
c24bdb02 KS |
22032 | = ((cu->list_in_scope |
22033 | == cu->get_builder ()->get_file_symbols ()) | |
22034 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22035 | : cu->list_in_scope); |
0fe7935b | 22036 | |
f1e6e072 | 22037 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22038 | } |
442ddf59 JK |
22039 | else if (!die_is_declaration (die, cu)) |
22040 | { | |
22041 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22042 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22043 | if (!suppress_add) |
22044 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22045 | } |
c906108c SS |
22046 | } |
22047 | break; | |
22048 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22049 | { |
22050 | /* If we are inside a function, mark this as an argument. If | |
22051 | not, we might be looking at an argument to an inlined function | |
22052 | when we do not have enough information to show inlined frames; | |
22053 | pretend it's a local variable in that case so that the user can | |
22054 | still see it. */ | |
804d2729 | 22055 | struct context_stack *curr |
c24bdb02 | 22056 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22057 | if (curr != nullptr && curr->name != nullptr) |
22058 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22059 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22060 | if (attr != nullptr) |
a60f3166 TT |
22061 | { |
22062 | var_decode_location (attr, sym, cu); | |
22063 | } | |
22064 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22065 | if (attr != nullptr) |
a60f3166 TT |
22066 | { |
22067 | dwarf2_const_value (attr, sym, cu); | |
22068 | } | |
f346a30d | 22069 | |
a60f3166 TT |
22070 | list_to_add = cu->list_in_scope; |
22071 | } | |
c906108c SS |
22072 | break; |
22073 | case DW_TAG_unspecified_parameters: | |
22074 | /* From varargs functions; gdb doesn't seem to have any | |
22075 | interest in this information, so just ignore it for now. | |
22076 | (FIXME?) */ | |
22077 | break; | |
34eaf542 TT |
22078 | case DW_TAG_template_type_param: |
22079 | suppress_add = 1; | |
22080 | /* Fall through. */ | |
c906108c | 22081 | case DW_TAG_class_type: |
680b30c7 | 22082 | case DW_TAG_interface_type: |
c906108c SS |
22083 | case DW_TAG_structure_type: |
22084 | case DW_TAG_union_type: | |
72019c9c | 22085 | case DW_TAG_set_type: |
c906108c | 22086 | case DW_TAG_enumeration_type: |
f1e6e072 | 22087 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22088 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22089 | |
63d06c5c | 22090 | { |
9c37b5ae | 22091 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22092 | really ever be static objects: otherwise, if you try |
22093 | to, say, break of a class's method and you're in a file | |
22094 | which doesn't mention that class, it won't work unless | |
22095 | the check for all static symbols in lookup_symbol_aux | |
22096 | saves you. See the OtherFileClass tests in | |
22097 | gdb.c++/namespace.exp. */ | |
22098 | ||
e37fd15a | 22099 | if (!suppress_add) |
34eaf542 | 22100 | { |
c24bdb02 | 22101 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22102 | list_to_add |
c24bdb02 | 22103 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22104 | && cu->language == language_cplus |
c24bdb02 | 22105 | ? builder->get_global_symbols () |
804d2729 | 22106 | : cu->list_in_scope); |
63d06c5c | 22107 | |
64382290 | 22108 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22109 | ... }" also defines a typedef for "foo". */ |
64382290 | 22110 | if (cu->language == language_cplus |
45280282 | 22111 | || cu->language == language_ada |
c44af4eb TT |
22112 | || cu->language == language_d |
22113 | || cu->language == language_rust) | |
64382290 TT |
22114 | { |
22115 | /* The symbol's name is already allocated along | |
22116 | with this objfile, so we don't need to | |
22117 | duplicate it for the type. */ | |
22118 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 22119 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 22120 | } |
63d06c5c DC |
22121 | } |
22122 | } | |
c906108c SS |
22123 | break; |
22124 | case DW_TAG_typedef: | |
f1e6e072 | 22125 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22126 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22127 | list_to_add = cu->list_in_scope; |
63d06c5c | 22128 | break; |
c906108c | 22129 | case DW_TAG_base_type: |
a02abb62 | 22130 | case DW_TAG_subrange_type: |
f1e6e072 | 22131 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22132 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22133 | list_to_add = cu->list_in_scope; |
c906108c SS |
22134 | break; |
22135 | case DW_TAG_enumerator: | |
e142c38c | 22136 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22137 | if (attr != nullptr) |
c906108c | 22138 | { |
e7c27a73 | 22139 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22140 | } |
63d06c5c DC |
22141 | { |
22142 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22143 | DW_TAG_class_type, etc. block. */ | |
22144 | ||
804d2729 | 22145 | list_to_add |
c24bdb02 | 22146 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22147 | && cu->language == language_cplus |
c24bdb02 | 22148 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22149 | : cu->list_in_scope); |
63d06c5c | 22150 | } |
c906108c | 22151 | break; |
74921315 | 22152 | case DW_TAG_imported_declaration: |
5c4e30ca | 22153 | case DW_TAG_namespace: |
f1e6e072 | 22154 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22155 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22156 | break; |
530e8392 KB |
22157 | case DW_TAG_module: |
22158 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22159 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22160 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22161 | break; |
4357ac6c | 22162 | case DW_TAG_common_block: |
f1e6e072 | 22163 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22164 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22165 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22166 | break; |
c906108c SS |
22167 | default: |
22168 | /* Not a tag we recognize. Hopefully we aren't processing | |
22169 | trash data, but since we must specifically ignore things | |
22170 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22171 | this point. */ |
b98664d3 | 22172 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22173 | dwarf_tag_name (die->tag)); |
c906108c SS |
22174 | break; |
22175 | } | |
df8a16a1 | 22176 | |
e37fd15a SW |
22177 | if (suppress_add) |
22178 | { | |
22179 | sym->hash_next = objfile->template_symbols; | |
22180 | objfile->template_symbols = sym; | |
22181 | list_to_add = NULL; | |
22182 | } | |
22183 | ||
22184 | if (list_to_add != NULL) | |
d3cb6808 | 22185 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22186 | |
df8a16a1 DJ |
22187 | /* For the benefit of old versions of GCC, check for anonymous |
22188 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22189 | if (!cu->processing_has_namespace_info |
94af9270 | 22190 | && cu->language == language_cplus) |
c24bdb02 | 22191 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22192 | } |
22193 | return (sym); | |
22194 | } | |
22195 | ||
98bfdba5 PA |
22196 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22197 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22198 | standard (v4) is not entirely clear about the meaning of using | |
22199 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22200 | wider than the data. The conclusion of a discussion on the DWARF | |
22201 | list was that this is unspecified. We choose to always zero-extend | |
22202 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22203 | |
98bfdba5 | 22204 | static gdb_byte * |
ff39bb5e | 22205 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22206 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22207 | { |
518817b3 | 22208 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
22209 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22210 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
22211 | LONGEST l = DW_UNSND (attr); |
22212 | ||
22213 | if (bits < sizeof (*value) * 8) | |
22214 | { | |
22215 | l &= ((LONGEST) 1 << bits) - 1; | |
22216 | *value = l; | |
22217 | } | |
22218 | else if (bits == sizeof (*value) * 8) | |
22219 | *value = l; | |
22220 | else | |
22221 | { | |
224c3ddb | 22222 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22223 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22224 | return bytes; | |
22225 | } | |
22226 | ||
22227 | return NULL; | |
22228 | } | |
22229 | ||
22230 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22231 | the value does not fit in *VALUE, set *BYTES - either already | |
22232 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22233 | or, set *BATON, if we translated the constant to a location | |
22234 | expression. */ | |
22235 | ||
22236 | static void | |
ff39bb5e | 22237 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22238 | const char *name, struct obstack *obstack, |
22239 | struct dwarf2_cu *cu, | |
d521ce57 | 22240 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22241 | struct dwarf2_locexpr_baton **baton) |
22242 | { | |
518817b3 | 22243 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 22244 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22245 | struct dwarf_block *blk; |
98bfdba5 PA |
22246 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22247 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22248 | ||
22249 | *value = 0; | |
22250 | *bytes = NULL; | |
22251 | *baton = NULL; | |
c906108c SS |
22252 | |
22253 | switch (attr->form) | |
22254 | { | |
22255 | case DW_FORM_addr: | |
336d760d | 22256 | case DW_FORM_addrx: |
3019eac3 | 22257 | case DW_FORM_GNU_addr_index: |
ac56253d | 22258 | { |
ac56253d TT |
22259 | gdb_byte *data; |
22260 | ||
98bfdba5 PA |
22261 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22262 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22263 | cu_header->addr_size, |
98bfdba5 | 22264 | TYPE_LENGTH (type)); |
ac56253d TT |
22265 | /* Symbols of this form are reasonably rare, so we just |
22266 | piggyback on the existing location code rather than writing | |
22267 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22268 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
22269 | (*baton)->per_cu = cu->per_cu; |
22270 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22271 | |
98bfdba5 | 22272 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22273 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22274 | (*baton)->data = data; |
ac56253d TT |
22275 | |
22276 | data[0] = DW_OP_addr; | |
22277 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
22278 | byte_order, DW_ADDR (attr)); | |
22279 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 22280 | } |
c906108c | 22281 | break; |
4ac36638 | 22282 | case DW_FORM_string: |
93b5768b | 22283 | case DW_FORM_strp: |
cf532bd1 | 22284 | case DW_FORM_strx: |
3019eac3 | 22285 | case DW_FORM_GNU_str_index: |
36586728 | 22286 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
22287 | /* DW_STRING is already allocated on the objfile obstack, point |
22288 | directly to it. */ | |
d521ce57 | 22289 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 22290 | break; |
c906108c SS |
22291 | case DW_FORM_block1: |
22292 | case DW_FORM_block2: | |
22293 | case DW_FORM_block4: | |
22294 | case DW_FORM_block: | |
2dc7f7b3 | 22295 | case DW_FORM_exprloc: |
0224619f | 22296 | case DW_FORM_data16: |
c906108c | 22297 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
22298 | if (TYPE_LENGTH (type) != blk->size) |
22299 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22300 | TYPE_LENGTH (type)); | |
22301 | *bytes = blk->data; | |
c906108c | 22302 | break; |
2df3850c JM |
22303 | |
22304 | /* The DW_AT_const_value attributes are supposed to carry the | |
22305 | symbol's value "represented as it would be on the target | |
22306 | architecture." By the time we get here, it's already been | |
22307 | converted to host endianness, so we just need to sign- or | |
22308 | zero-extend it as appropriate. */ | |
22309 | case DW_FORM_data1: | |
3aef2284 | 22310 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22311 | break; |
c906108c | 22312 | case DW_FORM_data2: |
3aef2284 | 22313 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22314 | break; |
c906108c | 22315 | case DW_FORM_data4: |
3aef2284 | 22316 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22317 | break; |
c906108c | 22318 | case DW_FORM_data8: |
3aef2284 | 22319 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22320 | break; |
22321 | ||
c906108c | 22322 | case DW_FORM_sdata: |
663c44ac | 22323 | case DW_FORM_implicit_const: |
98bfdba5 | 22324 | *value = DW_SND (attr); |
2df3850c JM |
22325 | break; |
22326 | ||
c906108c | 22327 | case DW_FORM_udata: |
98bfdba5 | 22328 | *value = DW_UNSND (attr); |
c906108c | 22329 | break; |
2df3850c | 22330 | |
c906108c | 22331 | default: |
b98664d3 | 22332 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22333 | dwarf_form_name (attr->form)); |
98bfdba5 | 22334 | *value = 0; |
c906108c SS |
22335 | break; |
22336 | } | |
22337 | } | |
22338 | ||
2df3850c | 22339 | |
98bfdba5 PA |
22340 | /* Copy constant value from an attribute to a symbol. */ |
22341 | ||
2df3850c | 22342 | static void |
ff39bb5e | 22343 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22344 | struct dwarf2_cu *cu) |
2df3850c | 22345 | { |
518817b3 | 22346 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 22347 | LONGEST value; |
d521ce57 | 22348 | const gdb_byte *bytes; |
98bfdba5 | 22349 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22350 | |
98bfdba5 | 22351 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22352 | sym->print_name (), |
98bfdba5 PA |
22353 | &objfile->objfile_obstack, cu, |
22354 | &value, &bytes, &baton); | |
2df3850c | 22355 | |
98bfdba5 PA |
22356 | if (baton != NULL) |
22357 | { | |
98bfdba5 | 22358 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22359 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22360 | } |
22361 | else if (bytes != NULL) | |
22362 | { | |
22363 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22364 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22365 | } |
22366 | else | |
22367 | { | |
22368 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22369 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22370 | } |
2df3850c JM |
22371 | } |
22372 | ||
c906108c SS |
22373 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22374 | ||
22375 | static struct type * | |
e7c27a73 | 22376 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22377 | { |
c906108c | 22378 | struct attribute *type_attr; |
c906108c | 22379 | |
e142c38c | 22380 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22381 | if (!type_attr) |
22382 | { | |
518817b3 | 22383 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22384 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22385 | return objfile_type (objfile)->builtin_void; |
c906108c | 22386 | } |
348e048f | 22387 | |
673bfd45 | 22388 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22389 | } |
22390 | ||
b4ba55a1 JB |
22391 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22392 | that allows to find parallel types through that information instead | |
22393 | of having to do expensive parallel lookups by type name. */ | |
22394 | ||
22395 | static int | |
22396 | need_gnat_info (struct dwarf2_cu *cu) | |
22397 | { | |
de4cb04a JB |
22398 | /* Assume that the Ada compiler was GNAT, which always produces |
22399 | the auxiliary information. */ | |
22400 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22401 | } |
22402 | ||
b4ba55a1 JB |
22403 | /* Return the auxiliary type of the die in question using its |
22404 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22405 | attribute is not present. */ | |
22406 | ||
22407 | static struct type * | |
22408 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22409 | { | |
b4ba55a1 | 22410 | struct attribute *type_attr; |
b4ba55a1 JB |
22411 | |
22412 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22413 | if (!type_attr) | |
22414 | return NULL; | |
22415 | ||
673bfd45 | 22416 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22417 | } |
22418 | ||
22419 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22420 | descriptive type accordingly. */ | |
22421 | ||
22422 | static void | |
22423 | set_descriptive_type (struct type *type, struct die_info *die, | |
22424 | struct dwarf2_cu *cu) | |
22425 | { | |
22426 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22427 | ||
22428 | if (descriptive_type) | |
22429 | { | |
22430 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22431 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22432 | } | |
22433 | } | |
22434 | ||
c906108c SS |
22435 | /* Return the containing type of the die in question using its |
22436 | DW_AT_containing_type attribute. */ | |
22437 | ||
22438 | static struct type * | |
e7c27a73 | 22439 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22440 | { |
c906108c | 22441 | struct attribute *type_attr; |
518817b3 | 22442 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22443 | |
e142c38c | 22444 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22445 | if (!type_attr) |
22446 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22447 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22448 | |
673bfd45 | 22449 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22450 | } |
22451 | ||
ac9ec31b DE |
22452 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22453 | ||
22454 | static struct type * | |
22455 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22456 | { | |
518817b3 SM |
22457 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22458 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 22459 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 22460 | char *saved; |
ac9ec31b | 22461 | |
528e1572 SM |
22462 | std::string message |
22463 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22464 | objfile_name (objfile), | |
22465 | sect_offset_str (cu->header.sect_off), | |
22466 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22467 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22468 | |
19f392bc | 22469 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22470 | } |
22471 | ||
673bfd45 | 22472 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22473 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22474 | DW_AT_containing_type. | |
673bfd45 DE |
22475 | If there is no type substitute an error marker. */ |
22476 | ||
c906108c | 22477 | static struct type * |
ff39bb5e | 22478 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22479 | struct dwarf2_cu *cu) |
c906108c | 22480 | { |
518817b3 SM |
22481 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22482 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22483 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22484 | struct type *this_type; |
22485 | ||
ac9ec31b DE |
22486 | gdb_assert (attr->name == DW_AT_type |
22487 | || attr->name == DW_AT_GNAT_descriptive_type | |
22488 | || attr->name == DW_AT_containing_type); | |
22489 | ||
673bfd45 DE |
22490 | /* First see if we have it cached. */ |
22491 | ||
36586728 TT |
22492 | if (attr->form == DW_FORM_GNU_ref_alt) |
22493 | { | |
22494 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22495 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22496 | |
ed2dc618 SM |
22497 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22498 | dwarf2_per_objfile); | |
9c541725 | 22499 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22500 | } |
7771576e | 22501 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22502 | { |
9c541725 | 22503 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22504 | |
9c541725 | 22505 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22506 | } |
55f1336d | 22507 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22508 | { |
ac9ec31b | 22509 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22510 | |
ac9ec31b | 22511 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22512 | } |
22513 | else | |
22514 | { | |
b98664d3 | 22515 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22516 | " at %s [in module %s]"), |
22517 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22518 | objfile_name (objfile)); |
ac9ec31b | 22519 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22520 | } |
22521 | ||
22522 | /* If not cached we need to read it in. */ | |
22523 | ||
22524 | if (this_type == NULL) | |
22525 | { | |
ac9ec31b | 22526 | struct die_info *type_die = NULL; |
673bfd45 DE |
22527 | struct dwarf2_cu *type_cu = cu; |
22528 | ||
7771576e | 22529 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22530 | type_die = follow_die_ref (die, attr, &type_cu); |
22531 | if (type_die == NULL) | |
22532 | return build_error_marker_type (cu, die); | |
22533 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22534 | from an inter-CU reference and the type's CU got expanded before |
22535 | ours. */ | |
ac9ec31b | 22536 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22537 | } |
22538 | ||
22539 | /* If we still don't have a type use an error marker. */ | |
22540 | ||
22541 | if (this_type == NULL) | |
ac9ec31b | 22542 | return build_error_marker_type (cu, die); |
673bfd45 | 22543 | |
f792889a | 22544 | return this_type; |
c906108c SS |
22545 | } |
22546 | ||
673bfd45 DE |
22547 | /* Return the type in DIE, CU. |
22548 | Returns NULL for invalid types. | |
22549 | ||
02142a6c | 22550 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22551 | and only reads the die in if necessary. |
22552 | ||
22553 | NOTE: This can be called when reading in partial or full symbols. */ | |
22554 | ||
f792889a | 22555 | static struct type * |
e7c27a73 | 22556 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22557 | { |
f792889a DJ |
22558 | struct type *this_type; |
22559 | ||
22560 | this_type = get_die_type (die, cu); | |
22561 | if (this_type) | |
22562 | return this_type; | |
22563 | ||
673bfd45 DE |
22564 | return read_type_die_1 (die, cu); |
22565 | } | |
22566 | ||
22567 | /* Read the type in DIE, CU. | |
22568 | Returns NULL for invalid types. */ | |
22569 | ||
22570 | static struct type * | |
22571 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22572 | { | |
22573 | struct type *this_type = NULL; | |
22574 | ||
c906108c SS |
22575 | switch (die->tag) |
22576 | { | |
22577 | case DW_TAG_class_type: | |
680b30c7 | 22578 | case DW_TAG_interface_type: |
c906108c SS |
22579 | case DW_TAG_structure_type: |
22580 | case DW_TAG_union_type: | |
f792889a | 22581 | this_type = read_structure_type (die, cu); |
c906108c SS |
22582 | break; |
22583 | case DW_TAG_enumeration_type: | |
f792889a | 22584 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22585 | break; |
22586 | case DW_TAG_subprogram: | |
22587 | case DW_TAG_subroutine_type: | |
edb3359d | 22588 | case DW_TAG_inlined_subroutine: |
f792889a | 22589 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22590 | break; |
22591 | case DW_TAG_array_type: | |
f792889a | 22592 | this_type = read_array_type (die, cu); |
c906108c | 22593 | break; |
72019c9c | 22594 | case DW_TAG_set_type: |
f792889a | 22595 | this_type = read_set_type (die, cu); |
72019c9c | 22596 | break; |
c906108c | 22597 | case DW_TAG_pointer_type: |
f792889a | 22598 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22599 | break; |
22600 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22601 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22602 | break; |
22603 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22604 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22605 | break; | |
22606 | case DW_TAG_rvalue_reference_type: | |
22607 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22608 | break; |
22609 | case DW_TAG_const_type: | |
f792889a | 22610 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22611 | break; |
22612 | case DW_TAG_volatile_type: | |
f792889a | 22613 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22614 | break; |
06d66ee9 TT |
22615 | case DW_TAG_restrict_type: |
22616 | this_type = read_tag_restrict_type (die, cu); | |
22617 | break; | |
c906108c | 22618 | case DW_TAG_string_type: |
f792889a | 22619 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22620 | break; |
22621 | case DW_TAG_typedef: | |
f792889a | 22622 | this_type = read_typedef (die, cu); |
c906108c | 22623 | break; |
a02abb62 | 22624 | case DW_TAG_subrange_type: |
f792889a | 22625 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22626 | break; |
c906108c | 22627 | case DW_TAG_base_type: |
f792889a | 22628 | this_type = read_base_type (die, cu); |
c906108c | 22629 | break; |
81a17f79 | 22630 | case DW_TAG_unspecified_type: |
f792889a | 22631 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22632 | break; |
0114d602 DJ |
22633 | case DW_TAG_namespace: |
22634 | this_type = read_namespace_type (die, cu); | |
22635 | break; | |
f55ee35c JK |
22636 | case DW_TAG_module: |
22637 | this_type = read_module_type (die, cu); | |
22638 | break; | |
a2c2acaf MW |
22639 | case DW_TAG_atomic_type: |
22640 | this_type = read_tag_atomic_type (die, cu); | |
22641 | break; | |
c906108c | 22642 | default: |
b98664d3 | 22643 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22644 | dwarf_tag_name (die->tag)); |
c906108c SS |
22645 | break; |
22646 | } | |
63d06c5c | 22647 | |
f792889a | 22648 | return this_type; |
63d06c5c DC |
22649 | } |
22650 | ||
abc72ce4 DE |
22651 | /* See if we can figure out if the class lives in a namespace. We do |
22652 | this by looking for a member function; its demangled name will | |
22653 | contain namespace info, if there is any. | |
22654 | Return the computed name or NULL. | |
22655 | Space for the result is allocated on the objfile's obstack. | |
22656 | This is the full-die version of guess_partial_die_structure_name. | |
22657 | In this case we know DIE has no useful parent. */ | |
22658 | ||
43816ebc | 22659 | static const char * |
abc72ce4 DE |
22660 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22661 | { | |
22662 | struct die_info *spec_die; | |
22663 | struct dwarf2_cu *spec_cu; | |
22664 | struct die_info *child; | |
518817b3 | 22665 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22666 | |
22667 | spec_cu = cu; | |
22668 | spec_die = die_specification (die, &spec_cu); | |
22669 | if (spec_die != NULL) | |
22670 | { | |
22671 | die = spec_die; | |
22672 | cu = spec_cu; | |
22673 | } | |
22674 | ||
22675 | for (child = die->child; | |
22676 | child != NULL; | |
22677 | child = child->sibling) | |
22678 | { | |
22679 | if (child->tag == DW_TAG_subprogram) | |
22680 | { | |
73b9be8b | 22681 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22682 | |
7d45c7c3 | 22683 | if (linkage_name != NULL) |
abc72ce4 | 22684 | { |
43816ebc TT |
22685 | gdb::unique_xmalloc_ptr<char> actual_name |
22686 | (language_class_name_from_physname (cu->language_defn, | |
22687 | linkage_name)); | |
22688 | const char *name = NULL; | |
abc72ce4 DE |
22689 | |
22690 | if (actual_name != NULL) | |
22691 | { | |
15d034d0 | 22692 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22693 | |
22694 | if (die_name != NULL | |
43816ebc | 22695 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22696 | { |
22697 | /* Strip off the class name from the full name. | |
22698 | We want the prefix. */ | |
22699 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22700 | int actual_name_len = strlen (actual_name.get ()); |
22701 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22702 | |
22703 | /* Test for '::' as a sanity check. */ | |
22704 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22705 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22706 | name = obstack_strndup ( |
e3b94546 | 22707 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22708 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22709 | } |
22710 | } | |
abc72ce4 DE |
22711 | return name; |
22712 | } | |
22713 | } | |
22714 | } | |
22715 | ||
22716 | return NULL; | |
22717 | } | |
22718 | ||
96408a79 SA |
22719 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22720 | prefix part in such case. See | |
22721 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22722 | ||
a121b7c1 | 22723 | static const char * |
96408a79 SA |
22724 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22725 | { | |
22726 | struct attribute *attr; | |
e6a959d6 | 22727 | const char *base; |
96408a79 SA |
22728 | |
22729 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22730 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22731 | return NULL; | |
22732 | ||
7d45c7c3 | 22733 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22734 | return NULL; |
22735 | ||
73b9be8b | 22736 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22737 | if (attr == NULL || DW_STRING (attr) == NULL) |
22738 | return NULL; | |
22739 | ||
22740 | /* dwarf2_name had to be already called. */ | |
22741 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22742 | ||
22743 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22744 | base = strrchr (DW_STRING (attr), ':'); | |
22745 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22746 | return ""; | |
22747 | ||
518817b3 | 22748 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
22749 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
22750 | DW_STRING (attr), | |
22751 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22752 | } |
22753 | ||
fdde2d81 | 22754 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22755 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22756 | |
0114d602 DJ |
22757 | For example, if we're within the method foo() in the following |
22758 | code: | |
22759 | ||
22760 | namespace N { | |
22761 | class C { | |
22762 | void foo () { | |
22763 | } | |
22764 | }; | |
22765 | } | |
22766 | ||
22767 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22768 | |
0d5cff50 | 22769 | static const char * |
e142c38c | 22770 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22771 | { |
518817b3 SM |
22772 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22773 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22774 | struct die_info *parent, *spec_die; |
22775 | struct dwarf2_cu *spec_cu; | |
22776 | struct type *parent_type; | |
a121b7c1 | 22777 | const char *retval; |
63d06c5c | 22778 | |
9c37b5ae | 22779 | if (cu->language != language_cplus |
c44af4eb TT |
22780 | && cu->language != language_fortran && cu->language != language_d |
22781 | && cu->language != language_rust) | |
0114d602 DJ |
22782 | return ""; |
22783 | ||
96408a79 SA |
22784 | retval = anonymous_struct_prefix (die, cu); |
22785 | if (retval) | |
22786 | return retval; | |
22787 | ||
0114d602 DJ |
22788 | /* We have to be careful in the presence of DW_AT_specification. |
22789 | For example, with GCC 3.4, given the code | |
22790 | ||
22791 | namespace N { | |
22792 | void foo() { | |
22793 | // Definition of N::foo. | |
22794 | } | |
22795 | } | |
22796 | ||
22797 | then we'll have a tree of DIEs like this: | |
22798 | ||
22799 | 1: DW_TAG_compile_unit | |
22800 | 2: DW_TAG_namespace // N | |
22801 | 3: DW_TAG_subprogram // declaration of N::foo | |
22802 | 4: DW_TAG_subprogram // definition of N::foo | |
22803 | DW_AT_specification // refers to die #3 | |
22804 | ||
22805 | Thus, when processing die #4, we have to pretend that we're in | |
22806 | the context of its DW_AT_specification, namely the contex of die | |
22807 | #3. */ | |
22808 | spec_cu = cu; | |
22809 | spec_die = die_specification (die, &spec_cu); | |
22810 | if (spec_die == NULL) | |
22811 | parent = die->parent; | |
22812 | else | |
63d06c5c | 22813 | { |
0114d602 DJ |
22814 | parent = spec_die->parent; |
22815 | cu = spec_cu; | |
63d06c5c | 22816 | } |
0114d602 DJ |
22817 | |
22818 | if (parent == NULL) | |
22819 | return ""; | |
98bfdba5 PA |
22820 | else if (parent->building_fullname) |
22821 | { | |
22822 | const char *name; | |
22823 | const char *parent_name; | |
22824 | ||
22825 | /* It has been seen on RealView 2.2 built binaries, | |
22826 | DW_TAG_template_type_param types actually _defined_ as | |
22827 | children of the parent class: | |
22828 | ||
22829 | enum E {}; | |
22830 | template class <class Enum> Class{}; | |
22831 | Class<enum E> class_e; | |
22832 | ||
22833 | 1: DW_TAG_class_type (Class) | |
22834 | 2: DW_TAG_enumeration_type (E) | |
22835 | 3: DW_TAG_enumerator (enum1:0) | |
22836 | 3: DW_TAG_enumerator (enum2:1) | |
22837 | ... | |
22838 | 2: DW_TAG_template_type_param | |
22839 | DW_AT_type DW_FORM_ref_udata (E) | |
22840 | ||
22841 | Besides being broken debug info, it can put GDB into an | |
22842 | infinite loop. Consider: | |
22843 | ||
22844 | When we're building the full name for Class<E>, we'll start | |
22845 | at Class, and go look over its template type parameters, | |
22846 | finding E. We'll then try to build the full name of E, and | |
22847 | reach here. We're now trying to build the full name of E, | |
22848 | and look over the parent DIE for containing scope. In the | |
22849 | broken case, if we followed the parent DIE of E, we'd again | |
22850 | find Class, and once again go look at its template type | |
22851 | arguments, etc., etc. Simply don't consider such parent die | |
22852 | as source-level parent of this die (it can't be, the language | |
22853 | doesn't allow it), and break the loop here. */ | |
22854 | name = dwarf2_name (die, cu); | |
22855 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22856 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22857 | name ? name : "<unknown>", |
22858 | parent_name ? parent_name : "<unknown>"); | |
22859 | return ""; | |
22860 | } | |
63d06c5c | 22861 | else |
0114d602 DJ |
22862 | switch (parent->tag) |
22863 | { | |
63d06c5c | 22864 | case DW_TAG_namespace: |
0114d602 | 22865 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22866 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22867 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22868 | Work around this problem here. */ | |
22869 | if (cu->language == language_cplus | |
e86ca25f | 22870 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22871 | return ""; |
0114d602 | 22872 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22873 | return TYPE_NAME (parent_type); |
63d06c5c | 22874 | case DW_TAG_class_type: |
680b30c7 | 22875 | case DW_TAG_interface_type: |
63d06c5c | 22876 | case DW_TAG_structure_type: |
0114d602 | 22877 | case DW_TAG_union_type: |
f55ee35c | 22878 | case DW_TAG_module: |
0114d602 | 22879 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22880 | if (TYPE_NAME (parent_type) != NULL) |
22881 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22882 | else |
22883 | /* An anonymous structure is only allowed non-static data | |
22884 | members; no typedefs, no member functions, et cetera. | |
22885 | So it does not need a prefix. */ | |
22886 | return ""; | |
abc72ce4 | 22887 | case DW_TAG_compile_unit: |
95554aad | 22888 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22889 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22890 | if (cu->language == language_cplus | |
fd5866f6 | 22891 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
22892 | && die->child != NULL |
22893 | && (die->tag == DW_TAG_class_type | |
22894 | || die->tag == DW_TAG_structure_type | |
22895 | || die->tag == DW_TAG_union_type)) | |
22896 | { | |
43816ebc | 22897 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22898 | if (name != NULL) |
22899 | return name; | |
22900 | } | |
22901 | return ""; | |
0a4b0913 AB |
22902 | case DW_TAG_subprogram: |
22903 | /* Nested subroutines in Fortran get a prefix with the name | |
22904 | of the parent's subroutine. */ | |
22905 | if (cu->language == language_fortran) | |
22906 | { | |
22907 | if ((die->tag == DW_TAG_subprogram) | |
22908 | && (dwarf2_name (parent, cu) != NULL)) | |
22909 | return dwarf2_name (parent, cu); | |
22910 | } | |
22911 | return determine_prefix (parent, cu); | |
3d567982 TT |
22912 | case DW_TAG_enumeration_type: |
22913 | parent_type = read_type_die (parent, cu); | |
22914 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22915 | { | |
e86ca25f TT |
22916 | if (TYPE_NAME (parent_type) != NULL) |
22917 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22918 | return ""; |
22919 | } | |
22920 | /* Fall through. */ | |
63d06c5c | 22921 | default: |
8176b9b8 | 22922 | return determine_prefix (parent, cu); |
63d06c5c | 22923 | } |
63d06c5c DC |
22924 | } |
22925 | ||
3e43a32a MS |
22926 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22927 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22928 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22929 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22930 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22931 | |
f55ee35c | 22932 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22933 | |
22934 | static char * | |
f55ee35c JK |
22935 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22936 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22937 | { |
f55ee35c | 22938 | const char *lead = ""; |
5c315b68 | 22939 | const char *sep; |
63d06c5c | 22940 | |
3e43a32a MS |
22941 | if (suffix == NULL || suffix[0] == '\0' |
22942 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22943 | sep = ""; |
45280282 IB |
22944 | else if (cu->language == language_d) |
22945 | { | |
22946 | /* For D, the 'main' function could be defined in any module, but it | |
22947 | should never be prefixed. */ | |
22948 | if (strcmp (suffix, "D main") == 0) | |
22949 | { | |
22950 | prefix = ""; | |
22951 | sep = ""; | |
22952 | } | |
22953 | else | |
22954 | sep = "."; | |
22955 | } | |
f55ee35c JK |
22956 | else if (cu->language == language_fortran && physname) |
22957 | { | |
22958 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22959 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22960 | ||
22961 | lead = "__"; | |
22962 | sep = "_MOD_"; | |
22963 | } | |
987504bb JJ |
22964 | else |
22965 | sep = "::"; | |
63d06c5c | 22966 | |
6dd47d34 DE |
22967 | if (prefix == NULL) |
22968 | prefix = ""; | |
22969 | if (suffix == NULL) | |
22970 | suffix = ""; | |
22971 | ||
987504bb JJ |
22972 | if (obs == NULL) |
22973 | { | |
3e43a32a | 22974 | char *retval |
224c3ddb SM |
22975 | = ((char *) |
22976 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22977 | |
f55ee35c JK |
22978 | strcpy (retval, lead); |
22979 | strcat (retval, prefix); | |
6dd47d34 DE |
22980 | strcat (retval, sep); |
22981 | strcat (retval, suffix); | |
63d06c5c DC |
22982 | return retval; |
22983 | } | |
987504bb JJ |
22984 | else |
22985 | { | |
22986 | /* We have an obstack. */ | |
f55ee35c | 22987 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22988 | } |
63d06c5c DC |
22989 | } |
22990 | ||
c906108c SS |
22991 | /* Return sibling of die, NULL if no sibling. */ |
22992 | ||
f9aca02d | 22993 | static struct die_info * |
fba45db2 | 22994 | sibling_die (struct die_info *die) |
c906108c | 22995 | { |
639d11d3 | 22996 | return die->sibling; |
c906108c SS |
22997 | } |
22998 | ||
71c25dea TT |
22999 | /* Get name of a die, return NULL if not found. */ |
23000 | ||
15d034d0 TT |
23001 | static const char * |
23002 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
23003 | struct obstack *obstack) |
23004 | { | |
23005 | if (name && cu->language == language_cplus) | |
23006 | { | |
2f408ecb | 23007 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 23008 | |
2f408ecb | 23009 | if (!canon_name.empty ()) |
71c25dea | 23010 | { |
2f408ecb | 23011 | if (canon_name != name) |
efba19b0 | 23012 | name = obstack_strdup (obstack, canon_name); |
71c25dea TT |
23013 | } |
23014 | } | |
23015 | ||
23016 | return name; | |
c906108c SS |
23017 | } |
23018 | ||
96553a0c DE |
23019 | /* Get name of a die, return NULL if not found. |
23020 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23021 | |
15d034d0 | 23022 | static const char * |
e142c38c | 23023 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23024 | { |
23025 | struct attribute *attr; | |
518817b3 | 23026 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 23027 | |
e142c38c | 23028 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 23029 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 23030 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23031 | && die->tag != DW_TAG_class_type |
23032 | && die->tag != DW_TAG_interface_type | |
23033 | && die->tag != DW_TAG_structure_type | |
23034 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23035 | return NULL; |
23036 | ||
23037 | switch (die->tag) | |
23038 | { | |
23039 | case DW_TAG_compile_unit: | |
95554aad | 23040 | case DW_TAG_partial_unit: |
71c25dea TT |
23041 | /* Compilation units have a DW_AT_name that is a filename, not |
23042 | a source language identifier. */ | |
23043 | case DW_TAG_enumeration_type: | |
23044 | case DW_TAG_enumerator: | |
23045 | /* These tags always have simple identifiers already; no need | |
23046 | to canonicalize them. */ | |
23047 | return DW_STRING (attr); | |
907af001 | 23048 | |
96553a0c DE |
23049 | case DW_TAG_namespace: |
23050 | if (attr != NULL && DW_STRING (attr) != NULL) | |
23051 | return DW_STRING (attr); | |
23052 | return CP_ANONYMOUS_NAMESPACE_STR; | |
23053 | ||
907af001 UW |
23054 | case DW_TAG_class_type: |
23055 | case DW_TAG_interface_type: | |
23056 | case DW_TAG_structure_type: | |
23057 | case DW_TAG_union_type: | |
23058 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23059 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23060 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23061 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 23062 | if (attr && DW_STRING (attr) |
61012eef GB |
23063 | && (startswith (DW_STRING (attr), "._") |
23064 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 23065 | return NULL; |
53832f31 TT |
23066 | |
23067 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23068 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
23069 | if (!attr || DW_STRING (attr) == NULL) | |
23070 | { | |
73b9be8b | 23071 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
23072 | if (attr == NULL || DW_STRING (attr) == NULL) |
23073 | return NULL; | |
23074 | ||
df5c6c50 JK |
23075 | /* Avoid demangling DW_STRING (attr) the second time on a second |
23076 | call for the same DIE. */ | |
23077 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 23078 | { |
43816ebc TT |
23079 | gdb::unique_xmalloc_ptr<char> demangled |
23080 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
23081 | ||
e6a959d6 | 23082 | const char *base; |
96408a79 | 23083 | |
53832f31 | 23084 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 23085 | DW_STRING (attr) |
021887d8 | 23086 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 23087 | demangled.get ()); |
53832f31 | 23088 | DW_STRING_IS_CANONICAL (attr) = 1; |
96408a79 SA |
23089 | |
23090 | /* Strip any leading namespaces/classes, keep only the base name. | |
23091 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
23092 | base = strrchr (DW_STRING (attr), ':'); | |
23093 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
23094 | return &base[1]; | |
23095 | else | |
23096 | return DW_STRING (attr); | |
53832f31 TT |
23097 | } |
23098 | } | |
907af001 UW |
23099 | break; |
23100 | ||
71c25dea | 23101 | default: |
907af001 UW |
23102 | break; |
23103 | } | |
23104 | ||
23105 | if (!DW_STRING_IS_CANONICAL (attr)) | |
23106 | { | |
23107 | DW_STRING (attr) | |
23108 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 23109 | &objfile->per_bfd->storage_obstack); |
907af001 | 23110 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 23111 | } |
907af001 | 23112 | return DW_STRING (attr); |
9219021c DC |
23113 | } |
23114 | ||
23115 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23116 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23117 | containing the return value on output. */ | |
9219021c DC |
23118 | |
23119 | static struct die_info * | |
f2f0e013 | 23120 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23121 | { |
23122 | struct attribute *attr; | |
9219021c | 23123 | |
f2f0e013 | 23124 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23125 | if (attr == NULL) |
23126 | return NULL; | |
23127 | ||
f2f0e013 | 23128 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23129 | } |
23130 | ||
fa9c3fa0 TT |
23131 | /* A convenience function that returns an "unknown" DWARF name, |
23132 | including the value of V. STR is the name of the entity being | |
23133 | printed, e.g., "TAG". */ | |
23134 | ||
23135 | static const char * | |
23136 | dwarf_unknown (const char *str, unsigned v) | |
23137 | { | |
23138 | char *cell = get_print_cell (); | |
23139 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
23140 | return cell; | |
23141 | } | |
23142 | ||
c906108c SS |
23143 | /* Convert a DIE tag into its string name. */ |
23144 | ||
f39c6ffd | 23145 | static const char * |
aa1ee363 | 23146 | dwarf_tag_name (unsigned tag) |
c906108c | 23147 | { |
f39c6ffd TT |
23148 | const char *name = get_DW_TAG_name (tag); |
23149 | ||
23150 | if (name == NULL) | |
fa9c3fa0 | 23151 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
23152 | |
23153 | return name; | |
c906108c SS |
23154 | } |
23155 | ||
23156 | /* Convert a DWARF attribute code into its string name. */ | |
23157 | ||
f39c6ffd | 23158 | static const char * |
aa1ee363 | 23159 | dwarf_attr_name (unsigned attr) |
c906108c | 23160 | { |
f39c6ffd TT |
23161 | const char *name; |
23162 | ||
c764a876 | 23163 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
23164 | if (attr == DW_AT_MIPS_fde) |
23165 | return "DW_AT_MIPS_fde"; | |
23166 | #else | |
23167 | if (attr == DW_AT_HP_block_index) | |
23168 | return "DW_AT_HP_block_index"; | |
c764a876 | 23169 | #endif |
f39c6ffd TT |
23170 | |
23171 | name = get_DW_AT_name (attr); | |
23172 | ||
23173 | if (name == NULL) | |
fa9c3fa0 | 23174 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
23175 | |
23176 | return name; | |
c906108c SS |
23177 | } |
23178 | ||
a084a2a6 AT |
23179 | /* Convert a unit type to corresponding DW_UT name. */ |
23180 | ||
23181 | static const char * | |
23182 | dwarf_unit_type_name (int unit_type) { | |
23183 | switch (unit_type) | |
23184 | { | |
23185 | case 0x01: | |
23186 | return "DW_UT_compile (0x01)"; | |
23187 | case 0x02: | |
23188 | return "DW_UT_type (0x02)"; | |
23189 | case 0x03: | |
23190 | return "DW_UT_partial (0x03)"; | |
23191 | case 0x04: | |
23192 | return "DW_UT_skeleton (0x04)"; | |
23193 | case 0x05: | |
23194 | return "DW_UT_split_compile (0x05)"; | |
23195 | case 0x06: | |
23196 | return "DW_UT_split_type (0x06)"; | |
23197 | case 0x80: | |
23198 | return "DW_UT_lo_user (0x80)"; | |
23199 | case 0xff: | |
23200 | return "DW_UT_hi_user (0xff)"; | |
23201 | default: | |
23202 | return nullptr; | |
23203 | } | |
23204 | } | |
23205 | ||
c906108c SS |
23206 | /* Convert a DWARF value form code into its string name. */ |
23207 | ||
f39c6ffd | 23208 | static const char * |
aa1ee363 | 23209 | dwarf_form_name (unsigned form) |
c906108c | 23210 | { |
f39c6ffd TT |
23211 | const char *name = get_DW_FORM_name (form); |
23212 | ||
23213 | if (name == NULL) | |
fa9c3fa0 | 23214 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
23215 | |
23216 | return name; | |
c906108c SS |
23217 | } |
23218 | ||
a121b7c1 | 23219 | static const char * |
fba45db2 | 23220 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
23221 | { |
23222 | if (mybool) | |
23223 | return "TRUE"; | |
23224 | else | |
23225 | return "FALSE"; | |
23226 | } | |
23227 | ||
23228 | /* Convert a DWARF type code into its string name. */ | |
23229 | ||
f39c6ffd | 23230 | static const char * |
aa1ee363 | 23231 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 23232 | { |
f39c6ffd | 23233 | const char *name = get_DW_ATE_name (enc); |
c906108c | 23234 | |
f39c6ffd | 23235 | if (name == NULL) |
fa9c3fa0 | 23236 | return dwarf_unknown ("ATE", enc); |
c906108c | 23237 | |
f39c6ffd | 23238 | return name; |
c906108c | 23239 | } |
c906108c | 23240 | |
f9aca02d | 23241 | static void |
d97bc12b | 23242 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23243 | { |
23244 | unsigned int i; | |
23245 | ||
d97bc12b | 23246 | print_spaces (indent, f); |
9d8780f0 | 23247 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23248 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23249 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23250 | |
23251 | if (die->parent != NULL) | |
23252 | { | |
23253 | print_spaces (indent, f); | |
9d8780f0 SM |
23254 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23255 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23256 | } |
23257 | ||
23258 | print_spaces (indent, f); | |
23259 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23260 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23261 | |
d97bc12b DE |
23262 | print_spaces (indent, f); |
23263 | fprintf_unfiltered (f, " attributes:\n"); | |
23264 | ||
c906108c SS |
23265 | for (i = 0; i < die->num_attrs; ++i) |
23266 | { | |
d97bc12b DE |
23267 | print_spaces (indent, f); |
23268 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23269 | dwarf_attr_name (die->attrs[i].name), |
23270 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23271 | |
c906108c SS |
23272 | switch (die->attrs[i].form) |
23273 | { | |
c906108c | 23274 | case DW_FORM_addr: |
336d760d | 23275 | case DW_FORM_addrx: |
3019eac3 | 23276 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23277 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 23278 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
23279 | break; |
23280 | case DW_FORM_block2: | |
23281 | case DW_FORM_block4: | |
23282 | case DW_FORM_block: | |
23283 | case DW_FORM_block1: | |
56eb65bd SP |
23284 | fprintf_unfiltered (f, "block: size %s", |
23285 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 23286 | break; |
2dc7f7b3 | 23287 | case DW_FORM_exprloc: |
56eb65bd SP |
23288 | fprintf_unfiltered (f, "expression: size %s", |
23289 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 23290 | break; |
0224619f JK |
23291 | case DW_FORM_data16: |
23292 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23293 | break; | |
4568ecf9 DE |
23294 | case DW_FORM_ref_addr: |
23295 | fprintf_unfiltered (f, "ref address: "); | |
23296 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23297 | break; | |
36586728 TT |
23298 | case DW_FORM_GNU_ref_alt: |
23299 | fprintf_unfiltered (f, "alt ref address: "); | |
23300 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23301 | break; | |
10b3939b DJ |
23302 | case DW_FORM_ref1: |
23303 | case DW_FORM_ref2: | |
23304 | case DW_FORM_ref4: | |
4568ecf9 DE |
23305 | case DW_FORM_ref8: |
23306 | case DW_FORM_ref_udata: | |
d97bc12b | 23307 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 23308 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 23309 | break; |
c906108c SS |
23310 | case DW_FORM_data1: |
23311 | case DW_FORM_data2: | |
23312 | case DW_FORM_data4: | |
ce5d95e1 | 23313 | case DW_FORM_data8: |
c906108c SS |
23314 | case DW_FORM_udata: |
23315 | case DW_FORM_sdata: | |
43bbcdc2 PH |
23316 | fprintf_unfiltered (f, "constant: %s", |
23317 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 23318 | break; |
2dc7f7b3 TT |
23319 | case DW_FORM_sec_offset: |
23320 | fprintf_unfiltered (f, "section offset: %s", | |
23321 | pulongest (DW_UNSND (&die->attrs[i]))); | |
23322 | break; | |
55f1336d | 23323 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
23324 | fprintf_unfiltered (f, "signature: %s", |
23325 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 23326 | break; |
c906108c | 23327 | case DW_FORM_string: |
4bdf3d34 | 23328 | case DW_FORM_strp: |
43988095 | 23329 | case DW_FORM_line_strp: |
cf532bd1 | 23330 | case DW_FORM_strx: |
3019eac3 | 23331 | case DW_FORM_GNU_str_index: |
36586728 | 23332 | case DW_FORM_GNU_strp_alt: |
8285870a | 23333 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 23334 | DW_STRING (&die->attrs[i]) |
8285870a JK |
23335 | ? DW_STRING (&die->attrs[i]) : "", |
23336 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
23337 | break; |
23338 | case DW_FORM_flag: | |
23339 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 23340 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23341 | else |
d97bc12b | 23342 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23343 | break; |
2dc7f7b3 TT |
23344 | case DW_FORM_flag_present: |
23345 | fprintf_unfiltered (f, "flag: TRUE"); | |
23346 | break; | |
a8329558 | 23347 | case DW_FORM_indirect: |
0963b4bd MS |
23348 | /* The reader will have reduced the indirect form to |
23349 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23350 | fprintf_unfiltered (f, |
3e43a32a | 23351 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23352 | break; |
663c44ac JK |
23353 | case DW_FORM_implicit_const: |
23354 | fprintf_unfiltered (f, "constant: %s", | |
23355 | plongest (DW_SND (&die->attrs[i]))); | |
23356 | break; | |
c906108c | 23357 | default: |
d97bc12b | 23358 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23359 | die->attrs[i].form); |
d97bc12b | 23360 | break; |
c906108c | 23361 | } |
d97bc12b | 23362 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23363 | } |
23364 | } | |
23365 | ||
f9aca02d | 23366 | static void |
d97bc12b | 23367 | dump_die_for_error (struct die_info *die) |
c906108c | 23368 | { |
d97bc12b DE |
23369 | dump_die_shallow (gdb_stderr, 0, die); |
23370 | } | |
23371 | ||
23372 | static void | |
23373 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23374 | { | |
23375 | int indent = level * 4; | |
23376 | ||
23377 | gdb_assert (die != NULL); | |
23378 | ||
23379 | if (level >= max_level) | |
23380 | return; | |
23381 | ||
23382 | dump_die_shallow (f, indent, die); | |
23383 | ||
23384 | if (die->child != NULL) | |
c906108c | 23385 | { |
d97bc12b DE |
23386 | print_spaces (indent, f); |
23387 | fprintf_unfiltered (f, " Children:"); | |
23388 | if (level + 1 < max_level) | |
23389 | { | |
23390 | fprintf_unfiltered (f, "\n"); | |
23391 | dump_die_1 (f, level + 1, max_level, die->child); | |
23392 | } | |
23393 | else | |
23394 | { | |
3e43a32a MS |
23395 | fprintf_unfiltered (f, |
23396 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23397 | } |
23398 | } | |
23399 | ||
23400 | if (die->sibling != NULL && level > 0) | |
23401 | { | |
23402 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23403 | } |
23404 | } | |
23405 | ||
d97bc12b DE |
23406 | /* This is called from the pdie macro in gdbinit.in. |
23407 | It's not static so gcc will keep a copy callable from gdb. */ | |
23408 | ||
23409 | void | |
23410 | dump_die (struct die_info *die, int max_level) | |
23411 | { | |
23412 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23413 | } | |
23414 | ||
f9aca02d | 23415 | static void |
51545339 | 23416 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23417 | { |
51545339 | 23418 | void **slot; |
c906108c | 23419 | |
9c541725 PA |
23420 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23421 | to_underlying (die->sect_off), | |
b64f50a1 | 23422 | INSERT); |
51545339 DJ |
23423 | |
23424 | *slot = die; | |
c906108c SS |
23425 | } |
23426 | ||
b64f50a1 JK |
23427 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
23428 | required kind. */ | |
23429 | ||
23430 | static sect_offset | |
ff39bb5e | 23431 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 23432 | { |
7771576e | 23433 | if (attr_form_is_ref (attr)) |
9c541725 | 23434 | return (sect_offset) DW_UNSND (attr); |
93311388 | 23435 | |
b98664d3 | 23436 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 23437 | dwarf_form_name (attr->form)); |
9c541725 | 23438 | return {}; |
c906108c SS |
23439 | } |
23440 | ||
43bbcdc2 PH |
23441 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
23442 | * the value held by the attribute is not constant. */ | |
a02abb62 | 23443 | |
43bbcdc2 | 23444 | static LONGEST |
ff39bb5e | 23445 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 23446 | { |
663c44ac | 23447 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
23448 | return DW_SND (attr); |
23449 | else if (attr->form == DW_FORM_udata | |
23450 | || attr->form == DW_FORM_data1 | |
23451 | || attr->form == DW_FORM_data2 | |
23452 | || attr->form == DW_FORM_data4 | |
23453 | || attr->form == DW_FORM_data8) | |
23454 | return DW_UNSND (attr); | |
23455 | else | |
23456 | { | |
0224619f | 23457 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 23458 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
23459 | dwarf_form_name (attr->form)); |
23460 | return default_value; | |
23461 | } | |
23462 | } | |
23463 | ||
348e048f DE |
23464 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23465 | On entry *REF_CU is the CU of SRC_DIE. | |
23466 | On exit *REF_CU is the CU of the result. */ | |
23467 | ||
23468 | static struct die_info * | |
ff39bb5e | 23469 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23470 | struct dwarf2_cu **ref_cu) |
23471 | { | |
23472 | struct die_info *die; | |
23473 | ||
7771576e | 23474 | if (attr_form_is_ref (attr)) |
348e048f | 23475 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23476 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23477 | die = follow_die_sig (src_die, attr, ref_cu); |
23478 | else | |
23479 | { | |
23480 | dump_die_for_error (src_die); | |
23481 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 23482 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
23483 | } |
23484 | ||
23485 | return die; | |
03dd20cc DJ |
23486 | } |
23487 | ||
5c631832 | 23488 | /* Follow reference OFFSET. |
673bfd45 DE |
23489 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23490 | On exit *REF_CU is the CU of the result. | |
23491 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23492 | |
f9aca02d | 23493 | static struct die_info * |
9c541725 | 23494 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23495 | struct dwarf2_cu **ref_cu) |
c906108c | 23496 | { |
10b3939b | 23497 | struct die_info temp_die; |
f2f0e013 | 23498 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
23499 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23500 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 23501 | |
348e048f DE |
23502 | gdb_assert (cu->per_cu != NULL); |
23503 | ||
98bfdba5 PA |
23504 | target_cu = cu; |
23505 | ||
3019eac3 | 23506 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23507 | { |
23508 | /* .debug_types CUs cannot reference anything outside their CU. | |
23509 | If they need to, they have to reference a signatured type via | |
55f1336d | 23510 | DW_FORM_ref_sig8. */ |
9c541725 | 23511 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23512 | return NULL; |
348e048f | 23513 | } |
36586728 | 23514 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23515 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23516 | { |
23517 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23518 | |
9c541725 | 23519 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23520 | dwarf2_per_objfile); |
03dd20cc DJ |
23521 | |
23522 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 23523 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 23524 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 23525 | |
10b3939b DJ |
23526 | target_cu = per_cu->cu; |
23527 | } | |
98bfdba5 PA |
23528 | else if (cu->dies == NULL) |
23529 | { | |
23530 | /* We're loading full DIEs during partial symbol reading. */ | |
23531 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 23532 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 23533 | } |
c906108c | 23534 | |
f2f0e013 | 23535 | *ref_cu = target_cu; |
9c541725 | 23536 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23537 | |
23538 | if (target_cu != cu) | |
23539 | target_cu->ancestor = cu; | |
23540 | ||
9a3c8263 | 23541 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23542 | &temp_die, |
23543 | to_underlying (sect_off)); | |
5c631832 | 23544 | } |
10b3939b | 23545 | |
5c631832 JK |
23546 | /* Follow reference attribute ATTR of SRC_DIE. |
23547 | On entry *REF_CU is the CU of SRC_DIE. | |
23548 | On exit *REF_CU is the CU of the result. */ | |
23549 | ||
23550 | static struct die_info * | |
ff39bb5e | 23551 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23552 | struct dwarf2_cu **ref_cu) |
23553 | { | |
9c541725 | 23554 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23555 | struct dwarf2_cu *cu = *ref_cu; |
23556 | struct die_info *die; | |
23557 | ||
9c541725 | 23558 | die = follow_die_offset (sect_off, |
36586728 TT |
23559 | (attr->form == DW_FORM_GNU_ref_alt |
23560 | || cu->per_cu->is_dwz), | |
23561 | ref_cu); | |
5c631832 | 23562 | if (!die) |
9d8780f0 SM |
23563 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23564 | "at %s [in module %s]"), | |
23565 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23566 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23567 | |
5c631832 JK |
23568 | return die; |
23569 | } | |
23570 | ||
9c541725 | 23571 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23572 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23573 | dwarf2_locexpr_baton->data has lifetime of |
23574 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23575 | |
23576 | struct dwarf2_locexpr_baton | |
9c541725 | 23577 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23578 | struct dwarf2_per_cu_data *per_cu, |
23579 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23580 | void *baton, bool resolve_abstract_p) |
5c631832 | 23581 | { |
918dd910 | 23582 | struct dwarf2_cu *cu; |
5c631832 JK |
23583 | struct die_info *die; |
23584 | struct attribute *attr; | |
23585 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23586 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23587 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23588 | |
918dd910 | 23589 | if (per_cu->cu == NULL) |
58f0c718 | 23590 | load_cu (per_cu, false); |
918dd910 | 23591 | cu = per_cu->cu; |
cc12ce38 DE |
23592 | if (cu == NULL) |
23593 | { | |
23594 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23595 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23596 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23597 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23598 | } |
918dd910 | 23599 | |
9c541725 | 23600 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23601 | if (!die) |
9d8780f0 SM |
23602 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23603 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23604 | |
23605 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23606 | if (!attr && resolve_abstract_p |
3360b6e7 | 23607 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
23608 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
23609 | { | |
23610 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 23611 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 23612 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 23613 | |
3360b6e7 TV |
23614 | for (const auto &cand_off |
23615 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 23616 | { |
3360b6e7 TV |
23617 | struct dwarf2_cu *cand_cu = cu; |
23618 | struct die_info *cand | |
23619 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23620 | if (!cand | |
23621 | || !cand->parent | |
e4a62c65 TV |
23622 | || cand->parent->tag != DW_TAG_subprogram) |
23623 | continue; | |
23624 | ||
23625 | CORE_ADDR pc_low, pc_high; | |
23626 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23627 | if (pc_low == ((CORE_ADDR) -1)) |
23628 | continue; | |
23629 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23630 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23631 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23632 | continue; |
23633 | ||
23634 | die = cand; | |
23635 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23636 | break; | |
23637 | } | |
23638 | } | |
23639 | ||
5c631832 JK |
23640 | if (!attr) |
23641 | { | |
e103e986 JK |
23642 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23643 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23644 | |
e103e986 | 23645 | retval.data = NULL; |
5c631832 JK |
23646 | retval.size = 0; |
23647 | } | |
8cf6f0b1 TT |
23648 | else if (attr_form_is_section_offset (attr)) |
23649 | { | |
23650 | struct dwarf2_loclist_baton loclist_baton; | |
23651 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23652 | size_t size; | |
23653 | ||
23654 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23655 | ||
23656 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23657 | &size, pc); | |
23658 | retval.size = size; | |
23659 | } | |
5c631832 JK |
23660 | else |
23661 | { | |
23662 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23663 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23664 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23665 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23666 | |
23667 | retval.data = DW_BLOCK (attr)->data; | |
23668 | retval.size = DW_BLOCK (attr)->size; | |
23669 | } | |
23670 | retval.per_cu = cu->per_cu; | |
918dd910 | 23671 | |
ed2dc618 | 23672 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23673 | |
5c631832 | 23674 | return retval; |
348e048f DE |
23675 | } |
23676 | ||
8b9737bf TT |
23677 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23678 | offset. */ | |
23679 | ||
23680 | struct dwarf2_locexpr_baton | |
23681 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23682 | struct dwarf2_per_cu_data *per_cu, | |
23683 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23684 | void *baton) | |
23685 | { | |
9c541725 | 23686 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23687 | |
9c541725 | 23688 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23689 | } |
23690 | ||
b6807d98 TT |
23691 | /* Write a constant of a given type as target-ordered bytes into |
23692 | OBSTACK. */ | |
23693 | ||
23694 | static const gdb_byte * | |
23695 | write_constant_as_bytes (struct obstack *obstack, | |
23696 | enum bfd_endian byte_order, | |
23697 | struct type *type, | |
23698 | ULONGEST value, | |
23699 | LONGEST *len) | |
23700 | { | |
23701 | gdb_byte *result; | |
23702 | ||
23703 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23704 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23705 | store_unsigned_integer (result, *len, byte_order, value); |
23706 | ||
23707 | return result; | |
23708 | } | |
23709 | ||
23710 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23711 | pointer to the constant bytes and set LEN to the length of the | |
23712 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23713 | does not have a DW_AT_const_value, return NULL. */ | |
23714 | ||
23715 | const gdb_byte * | |
9c541725 | 23716 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23717 | struct dwarf2_per_cu_data *per_cu, |
23718 | struct obstack *obstack, | |
23719 | LONGEST *len) | |
23720 | { | |
23721 | struct dwarf2_cu *cu; | |
23722 | struct die_info *die; | |
23723 | struct attribute *attr; | |
23724 | const gdb_byte *result = NULL; | |
23725 | struct type *type; | |
23726 | LONGEST value; | |
23727 | enum bfd_endian byte_order; | |
e3b94546 | 23728 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23729 | |
b6807d98 | 23730 | if (per_cu->cu == NULL) |
58f0c718 | 23731 | load_cu (per_cu, false); |
b6807d98 | 23732 | cu = per_cu->cu; |
cc12ce38 DE |
23733 | if (cu == NULL) |
23734 | { | |
23735 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23736 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23737 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23738 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23739 | } |
b6807d98 | 23740 | |
9c541725 | 23741 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23742 | if (!die) |
9d8780f0 SM |
23743 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23744 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23745 | |
23746 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23747 | if (attr == NULL) | |
23748 | return NULL; | |
23749 | ||
e3b94546 | 23750 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23751 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23752 | ||
23753 | switch (attr->form) | |
23754 | { | |
23755 | case DW_FORM_addr: | |
336d760d | 23756 | case DW_FORM_addrx: |
b6807d98 TT |
23757 | case DW_FORM_GNU_addr_index: |
23758 | { | |
23759 | gdb_byte *tem; | |
23760 | ||
23761 | *len = cu->header.addr_size; | |
224c3ddb | 23762 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23763 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23764 | result = tem; | |
23765 | } | |
23766 | break; | |
23767 | case DW_FORM_string: | |
23768 | case DW_FORM_strp: | |
cf532bd1 | 23769 | case DW_FORM_strx: |
b6807d98 TT |
23770 | case DW_FORM_GNU_str_index: |
23771 | case DW_FORM_GNU_strp_alt: | |
23772 | /* DW_STRING is already allocated on the objfile obstack, point | |
23773 | directly to it. */ | |
23774 | result = (const gdb_byte *) DW_STRING (attr); | |
23775 | *len = strlen (DW_STRING (attr)); | |
23776 | break; | |
23777 | case DW_FORM_block1: | |
23778 | case DW_FORM_block2: | |
23779 | case DW_FORM_block4: | |
23780 | case DW_FORM_block: | |
23781 | case DW_FORM_exprloc: | |
0224619f | 23782 | case DW_FORM_data16: |
b6807d98 TT |
23783 | result = DW_BLOCK (attr)->data; |
23784 | *len = DW_BLOCK (attr)->size; | |
23785 | break; | |
23786 | ||
23787 | /* The DW_AT_const_value attributes are supposed to carry the | |
23788 | symbol's value "represented as it would be on the target | |
23789 | architecture." By the time we get here, it's already been | |
23790 | converted to host endianness, so we just need to sign- or | |
23791 | zero-extend it as appropriate. */ | |
23792 | case DW_FORM_data1: | |
23793 | type = die_type (die, cu); | |
23794 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23795 | if (result == NULL) | |
23796 | result = write_constant_as_bytes (obstack, byte_order, | |
23797 | type, value, len); | |
23798 | break; | |
23799 | case DW_FORM_data2: | |
23800 | type = die_type (die, cu); | |
23801 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23802 | if (result == NULL) | |
23803 | result = write_constant_as_bytes (obstack, byte_order, | |
23804 | type, value, len); | |
23805 | break; | |
23806 | case DW_FORM_data4: | |
23807 | type = die_type (die, cu); | |
23808 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23809 | if (result == NULL) | |
23810 | result = write_constant_as_bytes (obstack, byte_order, | |
23811 | type, value, len); | |
23812 | break; | |
23813 | case DW_FORM_data8: | |
23814 | type = die_type (die, cu); | |
23815 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23816 | if (result == NULL) | |
23817 | result = write_constant_as_bytes (obstack, byte_order, | |
23818 | type, value, len); | |
23819 | break; | |
23820 | ||
23821 | case DW_FORM_sdata: | |
663c44ac | 23822 | case DW_FORM_implicit_const: |
b6807d98 TT |
23823 | type = die_type (die, cu); |
23824 | result = write_constant_as_bytes (obstack, byte_order, | |
23825 | type, DW_SND (attr), len); | |
23826 | break; | |
23827 | ||
23828 | case DW_FORM_udata: | |
23829 | type = die_type (die, cu); | |
23830 | result = write_constant_as_bytes (obstack, byte_order, | |
23831 | type, DW_UNSND (attr), len); | |
23832 | break; | |
23833 | ||
23834 | default: | |
b98664d3 | 23835 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23836 | dwarf_form_name (attr->form)); |
23837 | break; | |
23838 | } | |
23839 | ||
23840 | return result; | |
23841 | } | |
23842 | ||
7942e96e AA |
23843 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23844 | valid type for this die is found. */ | |
23845 | ||
23846 | struct type * | |
9c541725 | 23847 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23848 | struct dwarf2_per_cu_data *per_cu) |
23849 | { | |
23850 | struct dwarf2_cu *cu; | |
23851 | struct die_info *die; | |
23852 | ||
7942e96e | 23853 | if (per_cu->cu == NULL) |
58f0c718 | 23854 | load_cu (per_cu, false); |
7942e96e AA |
23855 | cu = per_cu->cu; |
23856 | if (!cu) | |
23857 | return NULL; | |
23858 | ||
9c541725 | 23859 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23860 | if (!die) |
23861 | return NULL; | |
23862 | ||
23863 | return die_type (die, cu); | |
23864 | } | |
23865 | ||
8a9b8146 TT |
23866 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23867 | PER_CU. */ | |
23868 | ||
23869 | struct type * | |
b64f50a1 | 23870 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23871 | struct dwarf2_per_cu_data *per_cu) |
23872 | { | |
9c541725 | 23873 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23874 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23875 | } |
23876 | ||
ac9ec31b | 23877 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23878 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23879 | On exit *REF_CU is the CU of the result. |
23880 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23881 | |
23882 | static struct die_info * | |
ac9ec31b DE |
23883 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23884 | struct dwarf2_cu **ref_cu) | |
348e048f | 23885 | { |
348e048f | 23886 | struct die_info temp_die; |
c24bdb02 | 23887 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
23888 | struct die_info *die; |
23889 | ||
ac9ec31b DE |
23890 | /* While it might be nice to assert sig_type->type == NULL here, |
23891 | we can get here for DW_AT_imported_declaration where we need | |
23892 | the DIE not the type. */ | |
348e048f DE |
23893 | |
23894 | /* If necessary, add it to the queue and load its DIEs. */ | |
23895 | ||
95554aad | 23896 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23897 | read_signatured_type (sig_type); |
348e048f | 23898 | |
348e048f | 23899 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23900 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23901 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23902 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23903 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23904 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23905 | if (die) |
23906 | { | |
ed2dc618 | 23907 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23908 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23909 | |
796a7ff8 DE |
23910 | /* For .gdb_index version 7 keep track of included TUs. |
23911 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23912 | if (dwarf2_per_objfile->index_table != NULL | |
23913 | && dwarf2_per_objfile->index_table->version <= 7) | |
23914 | { | |
ae640021 | 23915 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23916 | } |
23917 | ||
348e048f | 23918 | *ref_cu = sig_cu; |
c24bdb02 KS |
23919 | if (sig_cu != cu) |
23920 | sig_cu->ancestor = cu; | |
23921 | ||
348e048f DE |
23922 | return die; |
23923 | } | |
23924 | ||
ac9ec31b DE |
23925 | return NULL; |
23926 | } | |
23927 | ||
23928 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23929 | On entry *REF_CU is the CU of SRC_DIE. | |
23930 | On exit *REF_CU is the CU of the result. | |
23931 | The result is the DIE of the type. | |
23932 | If the referenced type cannot be found an error is thrown. */ | |
23933 | ||
23934 | static struct die_info * | |
ff39bb5e | 23935 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23936 | struct dwarf2_cu **ref_cu) |
23937 | { | |
23938 | ULONGEST signature = DW_SIGNATURE (attr); | |
23939 | struct signatured_type *sig_type; | |
23940 | struct die_info *die; | |
23941 | ||
23942 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23943 | ||
a2ce51a0 | 23944 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23945 | /* sig_type will be NULL if the signatured type is missing from |
23946 | the debug info. */ | |
23947 | if (sig_type == NULL) | |
23948 | { | |
23949 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23950 | " from DIE at %s [in module %s]"), |
23951 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23952 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23953 | } |
23954 | ||
23955 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23956 | if (die == NULL) | |
23957 | { | |
23958 | dump_die_for_error (src_die); | |
23959 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23960 | " from DIE at %s [in module %s]"), |
23961 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23962 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23963 | } |
23964 | ||
23965 | return die; | |
23966 | } | |
23967 | ||
23968 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23969 | reading in and processing the type unit if necessary. */ | |
23970 | ||
23971 | static struct type * | |
23972 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23973 | struct dwarf2_cu *cu) | |
23974 | { | |
518817b3 SM |
23975 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23976 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23977 | struct signatured_type *sig_type; |
23978 | struct dwarf2_cu *type_cu; | |
23979 | struct die_info *type_die; | |
23980 | struct type *type; | |
23981 | ||
a2ce51a0 | 23982 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23983 | /* sig_type will be NULL if the signatured type is missing from |
23984 | the debug info. */ | |
23985 | if (sig_type == NULL) | |
23986 | { | |
b98664d3 | 23987 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23988 | " from DIE at %s [in module %s]"), |
23989 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23990 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23991 | return build_error_marker_type (cu, die); |
23992 | } | |
23993 | ||
23994 | /* If we already know the type we're done. */ | |
23995 | if (sig_type->type != NULL) | |
23996 | return sig_type->type; | |
23997 | ||
23998 | type_cu = cu; | |
23999 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24000 | if (type_die != NULL) | |
24001 | { | |
24002 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24003 | is created. This is important, for example, because for c++ classes | |
24004 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24005 | type = read_type_die (type_die, type_cu); | |
24006 | if (type == NULL) | |
24007 | { | |
b98664d3 | 24008 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24009 | " referenced from DIE at %s [in module %s]"), |
24010 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 24011 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
24012 | type = build_error_marker_type (cu, die); |
24013 | } | |
24014 | } | |
24015 | else | |
24016 | { | |
b98664d3 | 24017 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24018 | " from DIE at %s [in module %s]"), |
24019 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 24020 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
24021 | type = build_error_marker_type (cu, die); |
24022 | } | |
24023 | sig_type->type = type; | |
24024 | ||
24025 | return type; | |
24026 | } | |
24027 | ||
24028 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24029 | reading in and processing the type unit if necessary. */ | |
24030 | ||
24031 | static struct type * | |
ff39bb5e | 24032 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24033 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24034 | { |
24035 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 24036 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
24037 | { |
24038 | struct dwarf2_cu *type_cu = cu; | |
24039 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24040 | ||
24041 | return read_type_die (type_die, type_cu); | |
24042 | } | |
24043 | else if (attr->form == DW_FORM_ref_sig8) | |
24044 | { | |
24045 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
24046 | } | |
24047 | else | |
24048 | { | |
518817b3 SM |
24049 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24050 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24051 | |
b98664d3 | 24052 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24053 | " at %s [in module %s]"), |
24054 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 24055 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
24056 | return build_error_marker_type (cu, die); |
24057 | } | |
348e048f DE |
24058 | } |
24059 | ||
e5fe5e75 | 24060 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24061 | |
24062 | static void | |
e5fe5e75 | 24063 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 24064 | { |
52dc124a | 24065 | struct signatured_type *sig_type; |
348e048f | 24066 | |
f4dc4d17 DE |
24067 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
24068 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
24069 | ||
6721b2ec DE |
24070 | /* We have the per_cu, but we need the signatured_type. |
24071 | Fortunately this is an easy translation. */ | |
24072 | gdb_assert (per_cu->is_debug_types); | |
24073 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24074 | |
6721b2ec | 24075 | gdb_assert (per_cu->cu == NULL); |
348e048f | 24076 | |
52dc124a | 24077 | read_signatured_type (sig_type); |
348e048f | 24078 | |
6721b2ec | 24079 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
24080 | } |
24081 | ||
3019eac3 DE |
24082 | /* Read in a signatured type and build its CU and DIEs. |
24083 | If the type is a stub for the real type in a DWO file, | |
24084 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24085 | |
24086 | static void | |
24087 | read_signatured_type (struct signatured_type *sig_type) | |
24088 | { | |
24089 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24090 | |
3019eac3 | 24091 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 24092 | gdb_assert (per_cu->cu == NULL); |
348e048f | 24093 | |
c0ab21c2 TT |
24094 | cutu_reader reader (per_cu, NULL, 0, 1, false); |
24095 | ||
24096 | if (!reader.dummy_p) | |
24097 | { | |
24098 | struct dwarf2_cu *cu = reader.cu; | |
24099 | const gdb_byte *info_ptr = reader.info_ptr; | |
24100 | ||
24101 | gdb_assert (cu->die_hash == NULL); | |
24102 | cu->die_hash = | |
24103 | htab_create_alloc_ex (cu->header.length / 12, | |
24104 | die_hash, | |
24105 | die_eq, | |
24106 | NULL, | |
24107 | &cu->comp_unit_obstack, | |
24108 | hashtab_obstack_allocate, | |
24109 | dummy_obstack_deallocate); | |
24110 | ||
24111 | if (reader.has_children) | |
24112 | reader.comp_unit_die->child | |
24113 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24114 | reader.comp_unit_die); | |
24115 | cu->dies = reader.comp_unit_die; | |
24116 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24117 | ||
24118 | /* We try not to read any attributes in this function, because | |
24119 | not all CUs needed for references have been loaded yet, and | |
24120 | symbol table processing isn't initialized. But we have to | |
24121 | set the CU language, or we won't be able to build types | |
24122 | correctly. Similarly, if we do not read the producer, we can | |
24123 | not apply producer-specific interpretation. */ | |
24124 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
24125 | } | |
24126 | ||
7ee85ab1 | 24127 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24128 | } |
24129 | ||
c906108c SS |
24130 | /* Decode simple location descriptions. |
24131 | Given a pointer to a dwarf block that defines a location, compute | |
24132 | the location and return the value. | |
24133 | ||
4cecd739 DJ |
24134 | NOTE drow/2003-11-18: This function is called in two situations |
24135 | now: for the address of static or global variables (partial symbols | |
24136 | only) and for offsets into structures which are expected to be | |
24137 | (more or less) constant. The partial symbol case should go away, | |
24138 | and only the constant case should remain. That will let this | |
24139 | function complain more accurately. A few special modes are allowed | |
24140 | without complaint for global variables (for instance, global | |
24141 | register values and thread-local values). | |
c906108c SS |
24142 | |
24143 | A location description containing no operations indicates that the | |
4cecd739 | 24144 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
24145 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
24146 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
24147 | complaint. |
24148 | ||
24149 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
24150 | |
24151 | static CORE_ADDR | |
e7c27a73 | 24152 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 24153 | { |
518817b3 | 24154 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
24155 | size_t i; |
24156 | size_t size = blk->size; | |
d521ce57 | 24157 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24158 | CORE_ADDR stack[64]; |
24159 | int stacki; | |
24160 | unsigned int bytes_read, unsnd; | |
24161 | gdb_byte op; | |
c906108c | 24162 | |
21ae7a4d JK |
24163 | i = 0; |
24164 | stacki = 0; | |
24165 | stack[stacki] = 0; | |
24166 | stack[++stacki] = 0; | |
24167 | ||
24168 | while (i < size) | |
24169 | { | |
24170 | op = data[i++]; | |
24171 | switch (op) | |
24172 | { | |
24173 | case DW_OP_lit0: | |
24174 | case DW_OP_lit1: | |
24175 | case DW_OP_lit2: | |
24176 | case DW_OP_lit3: | |
24177 | case DW_OP_lit4: | |
24178 | case DW_OP_lit5: | |
24179 | case DW_OP_lit6: | |
24180 | case DW_OP_lit7: | |
24181 | case DW_OP_lit8: | |
24182 | case DW_OP_lit9: | |
24183 | case DW_OP_lit10: | |
24184 | case DW_OP_lit11: | |
24185 | case DW_OP_lit12: | |
24186 | case DW_OP_lit13: | |
24187 | case DW_OP_lit14: | |
24188 | case DW_OP_lit15: | |
24189 | case DW_OP_lit16: | |
24190 | case DW_OP_lit17: | |
24191 | case DW_OP_lit18: | |
24192 | case DW_OP_lit19: | |
24193 | case DW_OP_lit20: | |
24194 | case DW_OP_lit21: | |
24195 | case DW_OP_lit22: | |
24196 | case DW_OP_lit23: | |
24197 | case DW_OP_lit24: | |
24198 | case DW_OP_lit25: | |
24199 | case DW_OP_lit26: | |
24200 | case DW_OP_lit27: | |
24201 | case DW_OP_lit28: | |
24202 | case DW_OP_lit29: | |
24203 | case DW_OP_lit30: | |
24204 | case DW_OP_lit31: | |
24205 | stack[++stacki] = op - DW_OP_lit0; | |
24206 | break; | |
f1bea926 | 24207 | |
21ae7a4d JK |
24208 | case DW_OP_reg0: |
24209 | case DW_OP_reg1: | |
24210 | case DW_OP_reg2: | |
24211 | case DW_OP_reg3: | |
24212 | case DW_OP_reg4: | |
24213 | case DW_OP_reg5: | |
24214 | case DW_OP_reg6: | |
24215 | case DW_OP_reg7: | |
24216 | case DW_OP_reg8: | |
24217 | case DW_OP_reg9: | |
24218 | case DW_OP_reg10: | |
24219 | case DW_OP_reg11: | |
24220 | case DW_OP_reg12: | |
24221 | case DW_OP_reg13: | |
24222 | case DW_OP_reg14: | |
24223 | case DW_OP_reg15: | |
24224 | case DW_OP_reg16: | |
24225 | case DW_OP_reg17: | |
24226 | case DW_OP_reg18: | |
24227 | case DW_OP_reg19: | |
24228 | case DW_OP_reg20: | |
24229 | case DW_OP_reg21: | |
24230 | case DW_OP_reg22: | |
24231 | case DW_OP_reg23: | |
24232 | case DW_OP_reg24: | |
24233 | case DW_OP_reg25: | |
24234 | case DW_OP_reg26: | |
24235 | case DW_OP_reg27: | |
24236 | case DW_OP_reg28: | |
24237 | case DW_OP_reg29: | |
24238 | case DW_OP_reg30: | |
24239 | case DW_OP_reg31: | |
24240 | stack[++stacki] = op - DW_OP_reg0; | |
24241 | if (i < size) | |
24242 | dwarf2_complex_location_expr_complaint (); | |
24243 | break; | |
c906108c | 24244 | |
21ae7a4d JK |
24245 | case DW_OP_regx: |
24246 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24247 | i += bytes_read; | |
24248 | stack[++stacki] = unsnd; | |
24249 | if (i < size) | |
24250 | dwarf2_complex_location_expr_complaint (); | |
24251 | break; | |
c906108c | 24252 | |
21ae7a4d JK |
24253 | case DW_OP_addr: |
24254 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
24255 | cu, &bytes_read); | |
24256 | i += bytes_read; | |
24257 | break; | |
d53d4ac5 | 24258 | |
21ae7a4d JK |
24259 | case DW_OP_const1u: |
24260 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24261 | i += 1; | |
24262 | break; | |
24263 | ||
24264 | case DW_OP_const1s: | |
24265 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24266 | i += 1; | |
24267 | break; | |
24268 | ||
24269 | case DW_OP_const2u: | |
24270 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24271 | i += 2; | |
24272 | break; | |
24273 | ||
24274 | case DW_OP_const2s: | |
24275 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24276 | i += 2; | |
24277 | break; | |
d53d4ac5 | 24278 | |
21ae7a4d JK |
24279 | case DW_OP_const4u: |
24280 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24281 | i += 4; | |
24282 | break; | |
24283 | ||
24284 | case DW_OP_const4s: | |
24285 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24286 | i += 4; | |
24287 | break; | |
24288 | ||
585861ea JK |
24289 | case DW_OP_const8u: |
24290 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24291 | i += 8; | |
24292 | break; | |
24293 | ||
21ae7a4d JK |
24294 | case DW_OP_constu: |
24295 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24296 | &bytes_read); | |
24297 | i += bytes_read; | |
24298 | break; | |
24299 | ||
24300 | case DW_OP_consts: | |
24301 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24302 | i += bytes_read; | |
24303 | break; | |
24304 | ||
24305 | case DW_OP_dup: | |
24306 | stack[stacki + 1] = stack[stacki]; | |
24307 | stacki++; | |
24308 | break; | |
24309 | ||
24310 | case DW_OP_plus: | |
24311 | stack[stacki - 1] += stack[stacki]; | |
24312 | stacki--; | |
24313 | break; | |
24314 | ||
24315 | case DW_OP_plus_uconst: | |
24316 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24317 | &bytes_read); | |
24318 | i += bytes_read; | |
24319 | break; | |
24320 | ||
24321 | case DW_OP_minus: | |
24322 | stack[stacki - 1] -= stack[stacki]; | |
24323 | stacki--; | |
24324 | break; | |
24325 | ||
24326 | case DW_OP_deref: | |
24327 | /* If we're not the last op, then we definitely can't encode | |
24328 | this using GDB's address_class enum. This is valid for partial | |
24329 | global symbols, although the variable's address will be bogus | |
24330 | in the psymtab. */ | |
24331 | if (i < size) | |
24332 | dwarf2_complex_location_expr_complaint (); | |
24333 | break; | |
24334 | ||
24335 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 24336 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24337 | /* The top of the stack has the offset from the beginning |
24338 | of the thread control block at which the variable is located. */ | |
24339 | /* Nothing should follow this operator, so the top of stack would | |
24340 | be returned. */ | |
24341 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24342 | address will be bogus in the psymtab. Make it always at least |
24343 | non-zero to not look as a variable garbage collected by linker | |
24344 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
24345 | if (i < size) |
24346 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 24347 | stack[stacki]++; |
21ae7a4d JK |
24348 | break; |
24349 | ||
24350 | case DW_OP_GNU_uninit: | |
24351 | break; | |
24352 | ||
336d760d | 24353 | case DW_OP_addrx: |
3019eac3 | 24354 | case DW_OP_GNU_addr_index: |
49f6c839 | 24355 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24356 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24357 | &bytes_read); | |
24358 | i += bytes_read; | |
24359 | break; | |
24360 | ||
21ae7a4d JK |
24361 | default: |
24362 | { | |
f39c6ffd | 24363 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
24364 | |
24365 | if (name) | |
b98664d3 | 24366 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
24367 | name); |
24368 | else | |
b98664d3 | 24369 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
24370 | op); |
24371 | } | |
24372 | ||
24373 | return (stack[stacki]); | |
d53d4ac5 | 24374 | } |
3c6e0cb3 | 24375 | |
21ae7a4d JK |
24376 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
24377 | outside of the allocated space. Also enforce minimum>0. */ | |
24378 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
24379 | { | |
b98664d3 | 24380 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
24381 | return 0; |
24382 | } | |
24383 | ||
24384 | if (stacki <= 0) | |
24385 | { | |
b98664d3 | 24386 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
24387 | return 0; |
24388 | } | |
24389 | } | |
24390 | return (stack[stacki]); | |
c906108c SS |
24391 | } |
24392 | ||
24393 | /* memory allocation interface */ | |
24394 | ||
c906108c | 24395 | static struct dwarf_block * |
7b5a2f43 | 24396 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24397 | { |
8d749320 | 24398 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24399 | } |
24400 | ||
c906108c | 24401 | static struct die_info * |
b60c80d6 | 24402 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24403 | { |
24404 | struct die_info *die; | |
b60c80d6 DJ |
24405 | size_t size = sizeof (struct die_info); |
24406 | ||
24407 | if (num_attrs > 1) | |
24408 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24409 | |
b60c80d6 | 24410 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24411 | memset (die, 0, sizeof (struct die_info)); |
24412 | return (die); | |
24413 | } | |
2e276125 JB |
24414 | |
24415 | \f | |
24416 | /* Macro support. */ | |
24417 | ||
233d95b5 JK |
24418 | /* Return file name relative to the compilation directory of file number I in |
24419 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 24420 | responsible for freeing it. */ |
233d95b5 | 24421 | |
2e276125 | 24422 | static char * |
233d95b5 | 24423 | file_file_name (int file, struct line_header *lh) |
2e276125 | 24424 | { |
6a83a1e6 EZ |
24425 | /* Is the file number a valid index into the line header's file name |
24426 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 24427 | if (lh->is_valid_file_index (file)) |
6a83a1e6 | 24428 | { |
7ba99d21 | 24429 | const file_entry *fe = lh->file_name_at (file); |
6e70227d | 24430 | |
7ba99d21 | 24431 | if (!IS_ABSOLUTE_PATH (fe->name)) |
8c43009f | 24432 | { |
7ba99d21 | 24433 | const char *dir = fe->include_dir (lh); |
8c43009f | 24434 | if (dir != NULL) |
7ba99d21 | 24435 | return concat (dir, SLASH_STRING, fe->name, (char *) NULL); |
8c43009f | 24436 | } |
7ba99d21 | 24437 | return xstrdup (fe->name); |
6a83a1e6 | 24438 | } |
2e276125 JB |
24439 | else |
24440 | { | |
6a83a1e6 EZ |
24441 | /* The compiler produced a bogus file number. We can at least |
24442 | record the macro definitions made in the file, even if we | |
24443 | won't be able to find the file by name. */ | |
24444 | char fake_name[80]; | |
9a619af0 | 24445 | |
8c042590 PM |
24446 | xsnprintf (fake_name, sizeof (fake_name), |
24447 | "<bad macro file number %d>", file); | |
2e276125 | 24448 | |
b98664d3 | 24449 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 24450 | file); |
2e276125 | 24451 | |
6a83a1e6 | 24452 | return xstrdup (fake_name); |
2e276125 JB |
24453 | } |
24454 | } | |
24455 | ||
233d95b5 JK |
24456 | /* Return the full name of file number I in *LH's file name table. |
24457 | Use COMP_DIR as the name of the current directory of the | |
24458 | compilation. The result is allocated using xmalloc; the caller is | |
24459 | responsible for freeing it. */ | |
24460 | static char * | |
24461 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
24462 | { | |
24463 | /* Is the file number a valid index into the line header's file name | |
24464 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 24465 | if (lh->is_valid_file_index (file)) |
233d95b5 JK |
24466 | { |
24467 | char *relative = file_file_name (file, lh); | |
24468 | ||
24469 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
24470 | return relative; | |
b36cec19 PA |
24471 | return reconcat (relative, comp_dir, SLASH_STRING, |
24472 | relative, (char *) NULL); | |
233d95b5 JK |
24473 | } |
24474 | else | |
24475 | return file_file_name (file, lh); | |
24476 | } | |
24477 | ||
2e276125 JB |
24478 | |
24479 | static struct macro_source_file * | |
804d2729 TT |
24480 | macro_start_file (struct dwarf2_cu *cu, |
24481 | int file, int line, | |
2e276125 | 24482 | struct macro_source_file *current_file, |
43f3e411 | 24483 | struct line_header *lh) |
2e276125 | 24484 | { |
233d95b5 JK |
24485 | /* File name relative to the compilation directory of this source file. */ |
24486 | char *file_name = file_file_name (file, lh); | |
2e276125 | 24487 | |
2e276125 | 24488 | if (! current_file) |
abc9d0dc | 24489 | { |
fc474241 DE |
24490 | /* Note: We don't create a macro table for this compilation unit |
24491 | at all until we actually get a filename. */ | |
c24bdb02 | 24492 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 24493 | |
abc9d0dc TT |
24494 | /* If we have no current file, then this must be the start_file |
24495 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
24496 | current_file = macro_set_main (macro_table, file_name); |
24497 | macro_define_special (macro_table); | |
abc9d0dc | 24498 | } |
2e276125 | 24499 | else |
233d95b5 | 24500 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 24501 | |
233d95b5 | 24502 | xfree (file_name); |
6e70227d | 24503 | |
2e276125 JB |
24504 | return current_file; |
24505 | } | |
24506 | ||
2e276125 JB |
24507 | static const char * |
24508 | consume_improper_spaces (const char *p, const char *body) | |
24509 | { | |
24510 | if (*p == ' ') | |
24511 | { | |
b98664d3 | 24512 | complaint (_("macro definition contains spaces " |
3e43a32a | 24513 | "in formal argument list:\n`%s'"), |
4d3c2250 | 24514 | body); |
2e276125 JB |
24515 | |
24516 | while (*p == ' ') | |
24517 | p++; | |
24518 | } | |
24519 | ||
24520 | return p; | |
24521 | } | |
24522 | ||
24523 | ||
24524 | static void | |
24525 | parse_macro_definition (struct macro_source_file *file, int line, | |
24526 | const char *body) | |
24527 | { | |
24528 | const char *p; | |
24529 | ||
24530 | /* The body string takes one of two forms. For object-like macro | |
24531 | definitions, it should be: | |
24532 | ||
24533 | <macro name> " " <definition> | |
24534 | ||
24535 | For function-like macro definitions, it should be: | |
24536 | ||
24537 | <macro name> "() " <definition> | |
24538 | or | |
24539 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24540 | ||
24541 | Spaces may appear only where explicitly indicated, and in the | |
24542 | <definition>. | |
24543 | ||
24544 | The Dwarf 2 spec says that an object-like macro's name is always | |
24545 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24546 | the space when the macro's definition is the empty string. |
2e276125 JB |
24547 | |
24548 | The Dwarf 2 spec says that there should be no spaces between the | |
24549 | formal arguments in a function-like macro's formal argument list, | |
24550 | but versions of GCC around March 2002 include spaces after the | |
24551 | commas. */ | |
24552 | ||
24553 | ||
24554 | /* Find the extent of the macro name. The macro name is terminated | |
24555 | by either a space or null character (for an object-like macro) or | |
24556 | an opening paren (for a function-like macro). */ | |
24557 | for (p = body; *p; p++) | |
24558 | if (*p == ' ' || *p == '(') | |
24559 | break; | |
24560 | ||
24561 | if (*p == ' ' || *p == '\0') | |
24562 | { | |
24563 | /* It's an object-like macro. */ | |
24564 | int name_len = p - body; | |
456e800a | 24565 | std::string name (body, name_len); |
2e276125 JB |
24566 | const char *replacement; |
24567 | ||
24568 | if (*p == ' ') | |
24569 | replacement = body + name_len + 1; | |
24570 | else | |
24571 | { | |
4d3c2250 | 24572 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24573 | replacement = body + name_len; |
24574 | } | |
6e70227d | 24575 | |
456e800a | 24576 | macro_define_object (file, line, name.c_str (), replacement); |
2e276125 JB |
24577 | } |
24578 | else if (*p == '(') | |
24579 | { | |
24580 | /* It's a function-like macro. */ | |
456e800a | 24581 | std::string name (body, p - body); |
2e276125 JB |
24582 | int argc = 0; |
24583 | int argv_size = 1; | |
8d749320 | 24584 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24585 | |
24586 | p++; | |
24587 | ||
24588 | p = consume_improper_spaces (p, body); | |
24589 | ||
24590 | /* Parse the formal argument list. */ | |
24591 | while (*p && *p != ')') | |
24592 | { | |
24593 | /* Find the extent of the current argument name. */ | |
24594 | const char *arg_start = p; | |
24595 | ||
24596 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24597 | p++; | |
24598 | ||
24599 | if (! *p || p == arg_start) | |
4d3c2250 | 24600 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24601 | else |
24602 | { | |
24603 | /* Make sure argv has room for the new argument. */ | |
24604 | if (argc >= argv_size) | |
24605 | { | |
24606 | argv_size *= 2; | |
224c3ddb | 24607 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24608 | } |
24609 | ||
3f8a7804 | 24610 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24611 | } |
24612 | ||
24613 | p = consume_improper_spaces (p, body); | |
24614 | ||
24615 | /* Consume the comma, if present. */ | |
24616 | if (*p == ',') | |
24617 | { | |
24618 | p++; | |
24619 | ||
24620 | p = consume_improper_spaces (p, body); | |
24621 | } | |
24622 | } | |
24623 | ||
24624 | if (*p == ')') | |
24625 | { | |
24626 | p++; | |
24627 | ||
24628 | if (*p == ' ') | |
24629 | /* Perfectly formed definition, no complaints. */ | |
456e800a | 24630 | macro_define_function (file, line, name.c_str (), |
6e70227d | 24631 | argc, (const char **) argv, |
2e276125 JB |
24632 | p + 1); |
24633 | else if (*p == '\0') | |
24634 | { | |
24635 | /* Complain, but do define it. */ | |
4d3c2250 | 24636 | dwarf2_macro_malformed_definition_complaint (body); |
456e800a | 24637 | macro_define_function (file, line, name.c_str (), |
6e70227d | 24638 | argc, (const char **) argv, |
2e276125 JB |
24639 | p); |
24640 | } | |
24641 | else | |
24642 | /* Just complain. */ | |
4d3c2250 | 24643 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24644 | } |
24645 | else | |
24646 | /* Just complain. */ | |
4d3c2250 | 24647 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24648 | |
2e276125 JB |
24649 | { |
24650 | int i; | |
24651 | ||
24652 | for (i = 0; i < argc; i++) | |
24653 | xfree (argv[i]); | |
24654 | } | |
24655 | xfree (argv); | |
24656 | } | |
24657 | else | |
4d3c2250 | 24658 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24659 | } |
24660 | ||
cf2c3c16 TT |
24661 | /* Skip some bytes from BYTES according to the form given in FORM. |
24662 | Returns the new pointer. */ | |
2e276125 | 24663 | |
d521ce57 TT |
24664 | static const gdb_byte * |
24665 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24666 | enum dwarf_form form, |
24667 | unsigned int offset_size, | |
24668 | struct dwarf2_section_info *section) | |
2e276125 | 24669 | { |
cf2c3c16 | 24670 | unsigned int bytes_read; |
2e276125 | 24671 | |
cf2c3c16 | 24672 | switch (form) |
2e276125 | 24673 | { |
cf2c3c16 TT |
24674 | case DW_FORM_data1: |
24675 | case DW_FORM_flag: | |
24676 | ++bytes; | |
24677 | break; | |
24678 | ||
24679 | case DW_FORM_data2: | |
24680 | bytes += 2; | |
24681 | break; | |
24682 | ||
24683 | case DW_FORM_data4: | |
24684 | bytes += 4; | |
24685 | break; | |
24686 | ||
24687 | case DW_FORM_data8: | |
24688 | bytes += 8; | |
24689 | break; | |
24690 | ||
0224619f JK |
24691 | case DW_FORM_data16: |
24692 | bytes += 16; | |
24693 | break; | |
24694 | ||
cf2c3c16 TT |
24695 | case DW_FORM_string: |
24696 | read_direct_string (abfd, bytes, &bytes_read); | |
24697 | bytes += bytes_read; | |
24698 | break; | |
24699 | ||
24700 | case DW_FORM_sec_offset: | |
24701 | case DW_FORM_strp: | |
36586728 | 24702 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24703 | bytes += offset_size; |
24704 | break; | |
24705 | ||
24706 | case DW_FORM_block: | |
24707 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24708 | bytes += bytes_read; | |
24709 | break; | |
24710 | ||
24711 | case DW_FORM_block1: | |
24712 | bytes += 1 + read_1_byte (abfd, bytes); | |
24713 | break; | |
24714 | case DW_FORM_block2: | |
24715 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24716 | break; | |
24717 | case DW_FORM_block4: | |
24718 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24719 | break; | |
24720 | ||
336d760d | 24721 | case DW_FORM_addrx: |
cf2c3c16 | 24722 | case DW_FORM_sdata: |
cf532bd1 | 24723 | case DW_FORM_strx: |
cf2c3c16 | 24724 | case DW_FORM_udata: |
3019eac3 DE |
24725 | case DW_FORM_GNU_addr_index: |
24726 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24727 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24728 | if (bytes == NULL) |
24729 | { | |
24730 | dwarf2_section_buffer_overflow_complaint (section); | |
24731 | return NULL; | |
24732 | } | |
cf2c3c16 TT |
24733 | break; |
24734 | ||
663c44ac JK |
24735 | case DW_FORM_implicit_const: |
24736 | break; | |
24737 | ||
cf2c3c16 TT |
24738 | default: |
24739 | { | |
b98664d3 | 24740 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24741 | form, get_section_name (section)); |
cf2c3c16 TT |
24742 | return NULL; |
24743 | } | |
2e276125 JB |
24744 | } |
24745 | ||
cf2c3c16 TT |
24746 | return bytes; |
24747 | } | |
757a13d0 | 24748 | |
cf2c3c16 TT |
24749 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24750 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24751 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24752 | |
d521ce57 | 24753 | static const gdb_byte * |
cf2c3c16 | 24754 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24755 | const gdb_byte **opcode_definitions, |
24756 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24757 | bfd *abfd, |
24758 | unsigned int offset_size, | |
24759 | struct dwarf2_section_info *section) | |
24760 | { | |
24761 | unsigned int bytes_read, i; | |
24762 | unsigned long arg; | |
d521ce57 | 24763 | const gdb_byte *defn; |
2e276125 | 24764 | |
cf2c3c16 | 24765 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24766 | { |
b98664d3 | 24767 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24768 | opcode); |
24769 | return NULL; | |
24770 | } | |
2e276125 | 24771 | |
cf2c3c16 TT |
24772 | defn = opcode_definitions[opcode]; |
24773 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24774 | defn += bytes_read; | |
2e276125 | 24775 | |
cf2c3c16 TT |
24776 | for (i = 0; i < arg; ++i) |
24777 | { | |
aead7601 SM |
24778 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24779 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24780 | section); |
cf2c3c16 TT |
24781 | if (mac_ptr == NULL) |
24782 | { | |
24783 | /* skip_form_bytes already issued the complaint. */ | |
24784 | return NULL; | |
24785 | } | |
24786 | } | |
757a13d0 | 24787 | |
cf2c3c16 TT |
24788 | return mac_ptr; |
24789 | } | |
757a13d0 | 24790 | |
cf2c3c16 TT |
24791 | /* A helper function which parses the header of a macro section. |
24792 | If the macro section is the extended (for now called "GNU") type, | |
24793 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24794 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24795 | |
d521ce57 TT |
24796 | static const gdb_byte * |
24797 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24798 | bfd *abfd, |
d521ce57 | 24799 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24800 | unsigned int *offset_size, |
24801 | int section_is_gnu) | |
24802 | { | |
24803 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24804 | |
cf2c3c16 TT |
24805 | if (section_is_gnu) |
24806 | { | |
24807 | unsigned int version, flags; | |
757a13d0 | 24808 | |
cf2c3c16 | 24809 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24810 | if (version != 4 && version != 5) |
cf2c3c16 | 24811 | { |
b98664d3 | 24812 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24813 | version); |
24814 | return NULL; | |
24815 | } | |
24816 | mac_ptr += 2; | |
757a13d0 | 24817 | |
cf2c3c16 TT |
24818 | flags = read_1_byte (abfd, mac_ptr); |
24819 | ++mac_ptr; | |
24820 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24821 | |
cf2c3c16 TT |
24822 | if ((flags & 2) != 0) |
24823 | /* We don't need the line table offset. */ | |
24824 | mac_ptr += *offset_size; | |
757a13d0 | 24825 | |
cf2c3c16 TT |
24826 | /* Vendor opcode descriptions. */ |
24827 | if ((flags & 4) != 0) | |
24828 | { | |
24829 | unsigned int i, count; | |
757a13d0 | 24830 | |
cf2c3c16 TT |
24831 | count = read_1_byte (abfd, mac_ptr); |
24832 | ++mac_ptr; | |
24833 | for (i = 0; i < count; ++i) | |
24834 | { | |
24835 | unsigned int opcode, bytes_read; | |
24836 | unsigned long arg; | |
24837 | ||
24838 | opcode = read_1_byte (abfd, mac_ptr); | |
24839 | ++mac_ptr; | |
24840 | opcode_definitions[opcode] = mac_ptr; | |
24841 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24842 | mac_ptr += bytes_read; | |
24843 | mac_ptr += arg; | |
24844 | } | |
757a13d0 | 24845 | } |
cf2c3c16 | 24846 | } |
757a13d0 | 24847 | |
cf2c3c16 TT |
24848 | return mac_ptr; |
24849 | } | |
757a13d0 | 24850 | |
cf2c3c16 | 24851 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24852 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24853 | |
24854 | static void | |
804d2729 | 24855 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24856 | bfd *abfd, |
d521ce57 | 24857 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24858 | struct macro_source_file *current_file, |
43f3e411 | 24859 | struct line_header *lh, |
cf2c3c16 | 24860 | struct dwarf2_section_info *section, |
36586728 | 24861 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24862 | unsigned int offset_size, |
8fc3fc34 | 24863 | htab_t include_hash) |
cf2c3c16 | 24864 | { |
804d2729 TT |
24865 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24866 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24867 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24868 | enum dwarf_macro_record_type macinfo_type; |
24869 | int at_commandline; | |
d521ce57 | 24870 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24871 | |
cf2c3c16 TT |
24872 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24873 | &offset_size, section_is_gnu); | |
24874 | if (mac_ptr == NULL) | |
24875 | { | |
24876 | /* We already issued a complaint. */ | |
24877 | return; | |
24878 | } | |
757a13d0 JK |
24879 | |
24880 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24881 | GDB is still reading the definitions from command line. First | |
24882 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24883 | to create CURRENT_FILE for the main source holding also the command line | |
24884 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24885 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24886 | ||
24887 | at_commandline = 1; | |
24888 | ||
24889 | do | |
24890 | { | |
24891 | /* Do we at least have room for a macinfo type byte? */ | |
24892 | if (mac_ptr >= mac_end) | |
24893 | { | |
f664829e | 24894 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24895 | break; |
24896 | } | |
24897 | ||
aead7601 | 24898 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24899 | mac_ptr++; |
24900 | ||
cf2c3c16 TT |
24901 | /* Note that we rely on the fact that the corresponding GNU and |
24902 | DWARF constants are the same. */ | |
132448f8 SM |
24903 | DIAGNOSTIC_PUSH |
24904 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24905 | switch (macinfo_type) |
24906 | { | |
24907 | /* A zero macinfo type indicates the end of the macro | |
24908 | information. */ | |
24909 | case 0: | |
24910 | break; | |
2e276125 | 24911 | |
0af92d60 JK |
24912 | case DW_MACRO_define: |
24913 | case DW_MACRO_undef: | |
24914 | case DW_MACRO_define_strp: | |
24915 | case DW_MACRO_undef_strp: | |
24916 | case DW_MACRO_define_sup: | |
24917 | case DW_MACRO_undef_sup: | |
2e276125 | 24918 | { |
891d2f0b | 24919 | unsigned int bytes_read; |
2e276125 | 24920 | int line; |
d521ce57 | 24921 | const char *body; |
cf2c3c16 | 24922 | int is_define; |
2e276125 | 24923 | |
cf2c3c16 TT |
24924 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24925 | mac_ptr += bytes_read; | |
24926 | ||
0af92d60 JK |
24927 | if (macinfo_type == DW_MACRO_define |
24928 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24929 | { |
24930 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24931 | mac_ptr += bytes_read; | |
24932 | } | |
24933 | else | |
24934 | { | |
24935 | LONGEST str_offset; | |
24936 | ||
24937 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24938 | mac_ptr += offset_size; | |
2e276125 | 24939 | |
0af92d60 JK |
24940 | if (macinfo_type == DW_MACRO_define_sup |
24941 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24942 | || section_is_dwz) |
36586728 | 24943 | { |
ed2dc618 SM |
24944 | struct dwz_file *dwz |
24945 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24946 | |
ed2dc618 SM |
24947 | body = read_indirect_string_from_dwz (objfile, |
24948 | dwz, str_offset); | |
36586728 TT |
24949 | } |
24950 | else | |
ed2dc618 SM |
24951 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24952 | abfd, str_offset); | |
cf2c3c16 TT |
24953 | } |
24954 | ||
0af92d60 JK |
24955 | is_define = (macinfo_type == DW_MACRO_define |
24956 | || macinfo_type == DW_MACRO_define_strp | |
24957 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24958 | if (! current_file) |
757a13d0 JK |
24959 | { |
24960 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24961 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24962 | "on line %d: %s"), |
cf2c3c16 TT |
24963 | is_define ? _("definition") : _("undefinition"), |
24964 | line, body); | |
757a13d0 JK |
24965 | break; |
24966 | } | |
3e43a32a MS |
24967 | if ((line == 0 && !at_commandline) |
24968 | || (line != 0 && at_commandline)) | |
b98664d3 | 24969 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24970 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24971 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24972 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24973 | ||
955b06fa | 24974 | if (body == NULL) |
7bede828 | 24975 | { |
955b06fa SDJ |
24976 | /* Fedora's rpm-build's "debugedit" binary |
24977 | corrupted .debug_macro sections. | |
24978 | ||
24979 | For more info, see | |
24980 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
24981 | complaint (_("debug info gives %s invalid macro %s " | |
24982 | "without body (corrupted?) at line %d " | |
24983 | "on file %s"), | |
24984 | at_commandline ? _("command-line") : _("in-file"), | |
24985 | is_define ? _("definition") : _("undefinition"), | |
24986 | line, current_file->filename); | |
7bede828 | 24987 | } |
955b06fa SDJ |
24988 | else if (is_define) |
24989 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
24990 | else |
24991 | { | |
0af92d60 JK |
24992 | gdb_assert (macinfo_type == DW_MACRO_undef |
24993 | || macinfo_type == DW_MACRO_undef_strp | |
24994 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24995 | macro_undef (current_file, line, body); |
24996 | } | |
2e276125 JB |
24997 | } |
24998 | break; | |
24999 | ||
0af92d60 | 25000 | case DW_MACRO_start_file: |
2e276125 | 25001 | { |
891d2f0b | 25002 | unsigned int bytes_read; |
2e276125 JB |
25003 | int line, file; |
25004 | ||
25005 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25006 | mac_ptr += bytes_read; | |
25007 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25008 | mac_ptr += bytes_read; | |
25009 | ||
3e43a32a MS |
25010 | if ((line == 0 && !at_commandline) |
25011 | || (line != 0 && at_commandline)) | |
b98664d3 | 25012 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
25013 | "from %s at %s line %d"), |
25014 | file, at_commandline ? _("command-line") : _("file"), | |
25015 | line == 0 ? _("zero") : _("non-zero"), line); | |
25016 | ||
25017 | if (at_commandline) | |
25018 | { | |
0af92d60 | 25019 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 25020 | pass one. */ |
757a13d0 JK |
25021 | at_commandline = 0; |
25022 | } | |
25023 | else | |
804d2729 TT |
25024 | current_file = macro_start_file (cu, file, line, current_file, |
25025 | lh); | |
2e276125 JB |
25026 | } |
25027 | break; | |
25028 | ||
0af92d60 | 25029 | case DW_MACRO_end_file: |
2e276125 | 25030 | if (! current_file) |
b98664d3 | 25031 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 25032 | "`close_file' directive")); |
2e276125 JB |
25033 | else |
25034 | { | |
25035 | current_file = current_file->included_by; | |
25036 | if (! current_file) | |
25037 | { | |
cf2c3c16 | 25038 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
25039 | |
25040 | /* GCC circa March 2002 doesn't produce the zero | |
25041 | type byte marking the end of the compilation | |
25042 | unit. Complain if it's not there, but exit no | |
25043 | matter what. */ | |
25044 | ||
25045 | /* Do we at least have room for a macinfo type byte? */ | |
25046 | if (mac_ptr >= mac_end) | |
25047 | { | |
f664829e | 25048 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
25049 | return; |
25050 | } | |
25051 | ||
25052 | /* We don't increment mac_ptr here, so this is just | |
25053 | a look-ahead. */ | |
aead7601 SM |
25054 | next_type |
25055 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
25056 | mac_ptr); | |
2e276125 | 25057 | if (next_type != 0) |
b98664d3 | 25058 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 25059 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
25060 | |
25061 | return; | |
25062 | } | |
25063 | } | |
25064 | break; | |
25065 | ||
0af92d60 JK |
25066 | case DW_MACRO_import: |
25067 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
25068 | { |
25069 | LONGEST offset; | |
8fc3fc34 | 25070 | void **slot; |
a036ba48 TT |
25071 | bfd *include_bfd = abfd; |
25072 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 25073 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 25074 | int is_dwz = section_is_dwz; |
d521ce57 | 25075 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
25076 | |
25077 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
25078 | mac_ptr += offset_size; | |
25079 | ||
0af92d60 | 25080 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 25081 | { |
ed2dc618 | 25082 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 25083 | |
4d663531 | 25084 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 25085 | |
a036ba48 | 25086 | include_section = &dwz->macro; |
a32a8923 | 25087 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
25088 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
25089 | is_dwz = 1; | |
25090 | } | |
25091 | ||
25092 | new_mac_ptr = include_section->buffer + offset; | |
25093 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
25094 | ||
8fc3fc34 TT |
25095 | if (*slot != NULL) |
25096 | { | |
25097 | /* This has actually happened; see | |
25098 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 25099 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
25100 | ".debug_macro section")); |
25101 | } | |
25102 | else | |
25103 | { | |
d521ce57 | 25104 | *slot = (void *) new_mac_ptr; |
36586728 | 25105 | |
804d2729 | 25106 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 25107 | include_mac_end, current_file, lh, |
36586728 | 25108 | section, section_is_gnu, is_dwz, |
4d663531 | 25109 | offset_size, include_hash); |
8fc3fc34 | 25110 | |
d521ce57 | 25111 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 25112 | } |
cf2c3c16 TT |
25113 | } |
25114 | break; | |
25115 | ||
2e276125 | 25116 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
25117 | if (!section_is_gnu) |
25118 | { | |
25119 | unsigned int bytes_read; | |
2e276125 | 25120 | |
ac298888 TT |
25121 | /* This reads the constant, but since we don't recognize |
25122 | any vendor extensions, we ignore it. */ | |
25123 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
25124 | mac_ptr += bytes_read; |
25125 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25126 | mac_ptr += bytes_read; | |
2e276125 | 25127 | |
cf2c3c16 TT |
25128 | /* We don't recognize any vendor extensions. */ |
25129 | break; | |
25130 | } | |
25131 | /* FALLTHROUGH */ | |
25132 | ||
25133 | default: | |
25134 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25135 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25136 | section); |
25137 | if (mac_ptr == NULL) | |
25138 | return; | |
25139 | break; | |
2e276125 | 25140 | } |
132448f8 | 25141 | DIAGNOSTIC_POP |
757a13d0 | 25142 | } while (macinfo_type != 0); |
2e276125 | 25143 | } |
8e19ed76 | 25144 | |
cf2c3c16 | 25145 | static void |
09262596 | 25146 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 25147 | int section_is_gnu) |
cf2c3c16 | 25148 | { |
518817b3 SM |
25149 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25150 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25151 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
25152 | struct line_header *lh = cu->line_header; |
25153 | bfd *abfd; | |
d521ce57 | 25154 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
25155 | struct macro_source_file *current_file = 0; |
25156 | enum dwarf_macro_record_type macinfo_type; | |
25157 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 25158 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 25159 | void **slot; |
09262596 DE |
25160 | struct dwarf2_section_info *section; |
25161 | const char *section_name; | |
25162 | ||
25163 | if (cu->dwo_unit != NULL) | |
25164 | { | |
25165 | if (section_is_gnu) | |
25166 | { | |
25167 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
25168 | section_name = ".debug_macro.dwo"; | |
25169 | } | |
25170 | else | |
25171 | { | |
25172 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
25173 | section_name = ".debug_macinfo.dwo"; | |
25174 | } | |
25175 | } | |
25176 | else | |
25177 | { | |
25178 | if (section_is_gnu) | |
25179 | { | |
25180 | section = &dwarf2_per_objfile->macro; | |
25181 | section_name = ".debug_macro"; | |
25182 | } | |
25183 | else | |
25184 | { | |
25185 | section = &dwarf2_per_objfile->macinfo; | |
25186 | section_name = ".debug_macinfo"; | |
25187 | } | |
25188 | } | |
cf2c3c16 | 25189 | |
bb5ed363 | 25190 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
25191 | if (section->buffer == NULL) |
25192 | { | |
b98664d3 | 25193 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
25194 | return; |
25195 | } | |
a32a8923 | 25196 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
25197 | |
25198 | /* First pass: Find the name of the base filename. | |
25199 | This filename is needed in order to process all macros whose definition | |
25200 | (or undefinition) comes from the command line. These macros are defined | |
25201 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
25202 | associated to the base file. | |
25203 | ||
25204 | To determine the base file name, we scan the macro definitions until we | |
25205 | reach the first DW_MACINFO_start_file entry. We then initialize | |
25206 | CURRENT_FILE accordingly so that any macro definition found before the | |
25207 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
25208 | ||
25209 | mac_ptr = section->buffer + offset; | |
25210 | mac_end = section->buffer + section->size; | |
25211 | ||
25212 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
25213 | &offset_size, section_is_gnu); | |
25214 | if (mac_ptr == NULL) | |
25215 | { | |
25216 | /* We already issued a complaint. */ | |
25217 | return; | |
25218 | } | |
25219 | ||
25220 | do | |
25221 | { | |
25222 | /* Do we at least have room for a macinfo type byte? */ | |
25223 | if (mac_ptr >= mac_end) | |
25224 | { | |
25225 | /* Complaint is printed during the second pass as GDB will probably | |
25226 | stop the first pass earlier upon finding | |
25227 | DW_MACINFO_start_file. */ | |
25228 | break; | |
25229 | } | |
25230 | ||
aead7601 | 25231 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
25232 | mac_ptr++; |
25233 | ||
25234 | /* Note that we rely on the fact that the corresponding GNU and | |
25235 | DWARF constants are the same. */ | |
132448f8 SM |
25236 | DIAGNOSTIC_PUSH |
25237 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
25238 | switch (macinfo_type) |
25239 | { | |
25240 | /* A zero macinfo type indicates the end of the macro | |
25241 | information. */ | |
25242 | case 0: | |
25243 | break; | |
25244 | ||
0af92d60 JK |
25245 | case DW_MACRO_define: |
25246 | case DW_MACRO_undef: | |
cf2c3c16 TT |
25247 | /* Only skip the data by MAC_PTR. */ |
25248 | { | |
25249 | unsigned int bytes_read; | |
25250 | ||
25251 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25252 | mac_ptr += bytes_read; | |
25253 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25254 | mac_ptr += bytes_read; | |
25255 | } | |
25256 | break; | |
25257 | ||
0af92d60 | 25258 | case DW_MACRO_start_file: |
cf2c3c16 TT |
25259 | { |
25260 | unsigned int bytes_read; | |
25261 | int line, file; | |
25262 | ||
25263 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25264 | mac_ptr += bytes_read; | |
25265 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25266 | mac_ptr += bytes_read; | |
25267 | ||
804d2729 | 25268 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
25269 | } |
25270 | break; | |
25271 | ||
0af92d60 | 25272 | case DW_MACRO_end_file: |
cf2c3c16 TT |
25273 | /* No data to skip by MAC_PTR. */ |
25274 | break; | |
25275 | ||
0af92d60 JK |
25276 | case DW_MACRO_define_strp: |
25277 | case DW_MACRO_undef_strp: | |
25278 | case DW_MACRO_define_sup: | |
25279 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
25280 | { |
25281 | unsigned int bytes_read; | |
25282 | ||
25283 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25284 | mac_ptr += bytes_read; | |
25285 | mac_ptr += offset_size; | |
25286 | } | |
25287 | break; | |
25288 | ||
0af92d60 JK |
25289 | case DW_MACRO_import: |
25290 | case DW_MACRO_import_sup: | |
cf2c3c16 | 25291 | /* Note that, according to the spec, a transparent include |
0af92d60 | 25292 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
25293 | skip this opcode. */ |
25294 | mac_ptr += offset_size; | |
25295 | break; | |
25296 | ||
25297 | case DW_MACINFO_vendor_ext: | |
25298 | /* Only skip the data by MAC_PTR. */ | |
25299 | if (!section_is_gnu) | |
25300 | { | |
25301 | unsigned int bytes_read; | |
25302 | ||
25303 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25304 | mac_ptr += bytes_read; | |
25305 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25306 | mac_ptr += bytes_read; | |
25307 | } | |
25308 | /* FALLTHROUGH */ | |
25309 | ||
25310 | default: | |
25311 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25312 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25313 | section); |
25314 | if (mac_ptr == NULL) | |
25315 | return; | |
25316 | break; | |
25317 | } | |
132448f8 | 25318 | DIAGNOSTIC_POP |
cf2c3c16 TT |
25319 | } while (macinfo_type != 0 && current_file == NULL); |
25320 | ||
25321 | /* Second pass: Process all entries. | |
25322 | ||
25323 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
25324 | command-line macro definitions/undefinitions. This flag is unset when we | |
25325 | reach the first DW_MACINFO_start_file entry. */ | |
25326 | ||
fc4007c9 TT |
25327 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
25328 | htab_eq_pointer, | |
25329 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 25330 | mac_ptr = section->buffer + offset; |
fc4007c9 | 25331 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 25332 | *slot = (void *) mac_ptr; |
804d2729 | 25333 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 25334 | current_file, lh, section, |
fc4007c9 TT |
25335 | section_is_gnu, 0, offset_size, |
25336 | include_hash.get ()); | |
cf2c3c16 TT |
25337 | } |
25338 | ||
8e19ed76 | 25339 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 25340 | if so return true else false. */ |
380bca97 | 25341 | |
8e19ed76 | 25342 | static int |
6e5a29e1 | 25343 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
25344 | { |
25345 | return (attr == NULL ? 0 : | |
25346 | attr->form == DW_FORM_block1 | |
25347 | || attr->form == DW_FORM_block2 | |
25348 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
25349 | || attr->form == DW_FORM_block |
25350 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 25351 | } |
4c2df51b | 25352 | |
c6a0999f JB |
25353 | /* Return non-zero if ATTR's value is a section offset --- classes |
25354 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
25355 | You may use DW_UNSND (attr) to retrieve such offsets. | |
25356 | ||
25357 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
25358 | may have a value that belongs to more than one of these classes; it | |
25359 | would be ambiguous if we did, because we use the same forms for all | |
25360 | of them. */ | |
380bca97 | 25361 | |
3690dd37 | 25362 | static int |
6e5a29e1 | 25363 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
25364 | { |
25365 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
25366 | || attr->form == DW_FORM_data8 |
25367 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
25368 | } |
25369 | ||
3690dd37 JB |
25370 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
25371 | zero otherwise. When this function returns true, you can apply | |
25372 | dwarf2_get_attr_constant_value to it. | |
25373 | ||
25374 | However, note that for some attributes you must check | |
25375 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
25376 | and DW_FORM_data8 are members of both the constant class, and of | |
25377 | the classes that contain offsets into other debug sections | |
25378 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
25379 | that, if an attribute's can be either a constant or one of the | |
25380 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
25381 | taken as section offsets, not constants. |
25382 | ||
25383 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
25384 | cannot handle that. */ | |
380bca97 | 25385 | |
3690dd37 | 25386 | static int |
6e5a29e1 | 25387 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
25388 | { |
25389 | switch (attr->form) | |
25390 | { | |
25391 | case DW_FORM_sdata: | |
25392 | case DW_FORM_udata: | |
25393 | case DW_FORM_data1: | |
25394 | case DW_FORM_data2: | |
25395 | case DW_FORM_data4: | |
25396 | case DW_FORM_data8: | |
663c44ac | 25397 | case DW_FORM_implicit_const: |
3690dd37 JB |
25398 | return 1; |
25399 | default: | |
25400 | return 0; | |
25401 | } | |
25402 | } | |
25403 | ||
7771576e SA |
25404 | |
25405 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
25406 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
25407 | ||
25408 | static int | |
6e5a29e1 | 25409 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
25410 | { |
25411 | switch (attr->form) | |
25412 | { | |
25413 | case DW_FORM_ref_addr: | |
25414 | case DW_FORM_ref1: | |
25415 | case DW_FORM_ref2: | |
25416 | case DW_FORM_ref4: | |
25417 | case DW_FORM_ref8: | |
25418 | case DW_FORM_ref_udata: | |
25419 | case DW_FORM_GNU_ref_alt: | |
25420 | return 1; | |
25421 | default: | |
25422 | return 0; | |
25423 | } | |
25424 | } | |
25425 | ||
3019eac3 DE |
25426 | /* Return the .debug_loc section to use for CU. |
25427 | For DWO files use .debug_loc.dwo. */ | |
25428 | ||
25429 | static struct dwarf2_section_info * | |
25430 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
25431 | { | |
518817b3 SM |
25432 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25433 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 25434 | |
3019eac3 | 25435 | if (cu->dwo_unit) |
43988095 JK |
25436 | { |
25437 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 25438 | |
43988095 JK |
25439 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
25440 | } | |
25441 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
25442 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
25443 | } |
25444 | ||
8cf6f0b1 TT |
25445 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
25446 | ||
25447 | static void | |
25448 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
25449 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 25450 | const struct attribute *attr) |
8cf6f0b1 | 25451 | { |
518817b3 SM |
25452 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25453 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
25454 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
25455 | ||
25456 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
25457 | |
25458 | baton->per_cu = cu->per_cu; | |
25459 | gdb_assert (baton->per_cu); | |
25460 | /* We don't know how long the location list is, but make sure we | |
25461 | don't run off the edge of the section. */ | |
3019eac3 DE |
25462 | baton->size = section->size - DW_UNSND (attr); |
25463 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 25464 | baton->base_address = cu->base_address; |
f664829e | 25465 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
25466 | } |
25467 | ||
4c2df51b | 25468 | static void |
ff39bb5e | 25469 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 25470 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 25471 | { |
518817b3 SM |
25472 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25473 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25474 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 25475 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 25476 | |
3690dd37 | 25477 | if (attr_form_is_section_offset (attr) |
3019eac3 | 25478 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
25479 | the section. If so, fall through to the complaint in the |
25480 | other branch. */ | |
3019eac3 | 25481 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 25482 | { |
0d53c4c4 | 25483 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 25484 | |
8d749320 | 25485 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 25486 | |
8cf6f0b1 | 25487 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 25488 | |
d00adf39 | 25489 | if (cu->base_known == 0) |
b98664d3 | 25490 | complaint (_("Location list used without " |
3e43a32a | 25491 | "specifying the CU base address.")); |
4c2df51b | 25492 | |
f1e6e072 TT |
25493 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25494 | ? dwarf2_loclist_block_index | |
25495 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
25496 | SYMBOL_LOCATION_BATON (sym) = baton; |
25497 | } | |
25498 | else | |
25499 | { | |
25500 | struct dwarf2_locexpr_baton *baton; | |
25501 | ||
8d749320 | 25502 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
25503 | baton->per_cu = cu->per_cu; |
25504 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
25505 | |
25506 | if (attr_form_is_block (attr)) | |
25507 | { | |
25508 | /* Note that we're just copying the block's data pointer | |
25509 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
25510 | info_buffer for SYM's objfile; right now we never release |
25511 | that buffer, but when we do clean up properly this may | |
25512 | need to change. */ | |
0d53c4c4 DJ |
25513 | baton->size = DW_BLOCK (attr)->size; |
25514 | baton->data = DW_BLOCK (attr)->data; | |
25515 | } | |
25516 | else | |
25517 | { | |
25518 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 25519 | sym->natural_name ()); |
0d53c4c4 | 25520 | baton->size = 0; |
0d53c4c4 | 25521 | } |
6e70227d | 25522 | |
f1e6e072 TT |
25523 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25524 | ? dwarf2_locexpr_block_index | |
25525 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
25526 | SYMBOL_LOCATION_BATON (sym) = baton; |
25527 | } | |
4c2df51b | 25528 | } |
6502dd73 | 25529 | |
9aa1f1e3 TT |
25530 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
25531 | came from a separate debuginfo file, then the master objfile is | |
25532 | returned. */ | |
ae0d2f24 UW |
25533 | |
25534 | struct objfile * | |
25535 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25536 | { | |
e3b94546 | 25537 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25538 | |
25539 | /* Return the master objfile, so that we can report and look up the | |
25540 | correct file containing this variable. */ | |
25541 | if (objfile->separate_debug_objfile_backlink) | |
25542 | objfile = objfile->separate_debug_objfile_backlink; | |
25543 | ||
25544 | return objfile; | |
25545 | } | |
25546 | ||
96408a79 SA |
25547 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25548 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25549 | CU_HEADERP first. */ | |
25550 | ||
25551 | static const struct comp_unit_head * | |
25552 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25553 | struct dwarf2_per_cu_data *per_cu) | |
25554 | { | |
d521ce57 | 25555 | const gdb_byte *info_ptr; |
96408a79 SA |
25556 | |
25557 | if (per_cu->cu) | |
25558 | return &per_cu->cu->header; | |
25559 | ||
9c541725 | 25560 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25561 | |
25562 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25563 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25564 | rcuh_kind::COMPILE); | |
96408a79 SA |
25565 | |
25566 | return cu_headerp; | |
25567 | } | |
25568 | ||
ae0d2f24 UW |
25569 | /* Return the address size given in the compilation unit header for CU. */ |
25570 | ||
98714339 | 25571 | int |
ae0d2f24 UW |
25572 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25573 | { | |
96408a79 SA |
25574 | struct comp_unit_head cu_header_local; |
25575 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25576 | |
96408a79 SA |
25577 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25578 | ||
25579 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25580 | } |
25581 | ||
9eae7c52 TT |
25582 | /* Return the offset size given in the compilation unit header for CU. */ |
25583 | ||
25584 | int | |
25585 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25586 | { | |
96408a79 SA |
25587 | struct comp_unit_head cu_header_local; |
25588 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25589 | |
96408a79 SA |
25590 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25591 | ||
25592 | return cu_headerp->offset_size; | |
25593 | } | |
25594 | ||
25595 | /* See its dwarf2loc.h declaration. */ | |
25596 | ||
25597 | int | |
25598 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25599 | { | |
25600 | struct comp_unit_head cu_header_local; | |
25601 | const struct comp_unit_head *cu_headerp; | |
25602 | ||
25603 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25604 | ||
25605 | if (cu_headerp->version == 2) | |
25606 | return cu_headerp->addr_size; | |
25607 | else | |
25608 | return cu_headerp->offset_size; | |
181cebd4 JK |
25609 | } |
25610 | ||
9aa1f1e3 TT |
25611 | /* Return the text offset of the CU. The returned offset comes from |
25612 | this CU's objfile. If this objfile came from a separate debuginfo | |
25613 | file, then the offset may be different from the corresponding | |
25614 | offset in the parent objfile. */ | |
25615 | ||
25616 | CORE_ADDR | |
25617 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25618 | { | |
b3b3bada | 25619 | return per_cu->dwarf2_per_objfile->objfile->text_section_offset (); |
9aa1f1e3 TT |
25620 | } |
25621 | ||
9a49df9d AB |
25622 | /* Return a type that is a generic pointer type, the size of which matches |
25623 | the address size given in the compilation unit header for PER_CU. */ | |
25624 | static struct type * | |
25625 | dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu) | |
25626 | { | |
25627 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
25628 | struct type *void_type = objfile_type (objfile)->builtin_void; | |
25629 | struct type *addr_type = lookup_pointer_type (void_type); | |
25630 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
25631 | ||
25632 | if (TYPE_LENGTH (addr_type) == addr_size) | |
25633 | return addr_type; | |
25634 | ||
25635 | addr_type | |
25636 | = dwarf2_per_cu_addr_sized_int_type (per_cu, TYPE_UNSIGNED (addr_type)); | |
25637 | return addr_type; | |
25638 | } | |
25639 | ||
43988095 JK |
25640 | /* Return DWARF version number of PER_CU. */ |
25641 | ||
25642 | short | |
25643 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25644 | { | |
25645 | return per_cu->dwarf_version; | |
25646 | } | |
25647 | ||
348e048f DE |
25648 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25649 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25650 | |
25651 | static struct dwarf2_per_cu_data * | |
9c541725 | 25652 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25653 | unsigned int offset_in_dwz, |
ed2dc618 | 25654 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25655 | { |
25656 | struct dwarf2_per_cu_data *this_cu; | |
25657 | int low, high; | |
25658 | ||
ae038cb0 | 25659 | low = 0; |
b76e467d | 25660 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25661 | while (high > low) |
25662 | { | |
36586728 | 25663 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25664 | int mid = low + (high - low) / 2; |
9a619af0 | 25665 | |
36586728 | 25666 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 25667 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25668 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 25669 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
25670 | high = mid; |
25671 | else | |
25672 | low = mid + 1; | |
25673 | } | |
25674 | gdb_assert (low == high); | |
36586728 | 25675 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 25676 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25677 | { |
36586728 | 25678 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25679 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25680 | "offset %s [in module %s]"), |
25681 | sect_offset_str (sect_off), | |
ed2dc618 | 25682 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25683 | |
9c541725 PA |
25684 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25685 | <= sect_off); | |
ae038cb0 DJ |
25686 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25687 | } | |
25688 | else | |
25689 | { | |
b76e467d | 25690 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25691 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25692 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25693 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25694 | return this_cu; |
25695 | } | |
25696 | } | |
25697 | ||
23745b47 | 25698 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25699 | |
fcd3b13d SM |
25700 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25701 | : per_cu (per_cu_), | |
9068261f AB |
25702 | mark (false), |
25703 | has_loclist (false), | |
25704 | checked_producer (false), | |
25705 | producer_is_gxx_lt_4_6 (false), | |
25706 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25707 | producer_is_icc (false), |
9068261f | 25708 | producer_is_icc_lt_14 (false), |
c258c396 | 25709 | producer_is_codewarrior (false), |
9068261f | 25710 | processing_has_namespace_info (false) |
93311388 | 25711 | { |
fcd3b13d SM |
25712 | per_cu->cu = this; |
25713 | } | |
25714 | ||
25715 | /* Destroy a dwarf2_cu. */ | |
25716 | ||
25717 | dwarf2_cu::~dwarf2_cu () | |
25718 | { | |
25719 | per_cu->cu = NULL; | |
9816fde3 JK |
25720 | } |
25721 | ||
25722 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25723 | ||
25724 | static void | |
95554aad TT |
25725 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25726 | enum language pretend_language) | |
9816fde3 JK |
25727 | { |
25728 | struct attribute *attr; | |
25729 | ||
25730 | /* Set the language we're debugging. */ | |
25731 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25732 | if (attr != nullptr) |
9816fde3 JK |
25733 | set_cu_language (DW_UNSND (attr), cu); |
25734 | else | |
9cded63f | 25735 | { |
95554aad | 25736 | cu->language = pretend_language; |
9cded63f TT |
25737 | cu->language_defn = language_def (cu->language); |
25738 | } | |
dee91e82 | 25739 | |
7d45c7c3 | 25740 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25741 | } |
25742 | ||
ae038cb0 DJ |
25743 | /* Increase the age counter on each cached compilation unit, and free |
25744 | any that are too old. */ | |
25745 | ||
25746 | static void | |
ed2dc618 | 25747 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25748 | { |
25749 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25750 | ||
25751 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25752 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25753 | while (per_cu != NULL) | |
25754 | { | |
25755 | per_cu->cu->last_used ++; | |
b4f54984 | 25756 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25757 | dwarf2_mark (per_cu->cu); |
25758 | per_cu = per_cu->cu->read_in_chain; | |
25759 | } | |
25760 | ||
25761 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25762 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25763 | while (per_cu != NULL) | |
25764 | { | |
25765 | struct dwarf2_per_cu_data *next_cu; | |
25766 | ||
25767 | next_cu = per_cu->cu->read_in_chain; | |
25768 | ||
25769 | if (!per_cu->cu->mark) | |
25770 | { | |
fcd3b13d | 25771 | delete per_cu->cu; |
ae038cb0 DJ |
25772 | *last_chain = next_cu; |
25773 | } | |
25774 | else | |
25775 | last_chain = &per_cu->cu->read_in_chain; | |
25776 | ||
25777 | per_cu = next_cu; | |
25778 | } | |
25779 | } | |
25780 | ||
25781 | /* Remove a single compilation unit from the cache. */ | |
25782 | ||
25783 | static void | |
dee91e82 | 25784 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25785 | { |
25786 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25787 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25788 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25789 | |
25790 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25791 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25792 | while (per_cu != NULL) | |
25793 | { | |
25794 | struct dwarf2_per_cu_data *next_cu; | |
25795 | ||
25796 | next_cu = per_cu->cu->read_in_chain; | |
25797 | ||
dee91e82 | 25798 | if (per_cu == target_per_cu) |
ae038cb0 | 25799 | { |
fcd3b13d | 25800 | delete per_cu->cu; |
dee91e82 | 25801 | per_cu->cu = NULL; |
ae038cb0 DJ |
25802 | *last_chain = next_cu; |
25803 | break; | |
25804 | } | |
25805 | else | |
25806 | last_chain = &per_cu->cu->read_in_chain; | |
25807 | ||
25808 | per_cu = next_cu; | |
25809 | } | |
25810 | } | |
25811 | ||
dee91e82 DE |
25812 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25813 | We store these in a hash table separate from the DIEs, and preserve them | |
25814 | when the DIEs are flushed out of cache. | |
25815 | ||
25816 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25817 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25818 | or the type may come from a DWO file. Furthermore, while it's more logical |
25819 | to use per_cu->section+offset, with Fission the section with the data is in | |
25820 | the DWO file but we don't know that section at the point we need it. | |
25821 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25822 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25823 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25824 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25825 | |
dee91e82 | 25826 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25827 | { |
dee91e82 | 25828 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25829 | sect_offset sect_off; |
1c379e20 DJ |
25830 | struct type *type; |
25831 | }; | |
25832 | ||
dee91e82 | 25833 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25834 | |
25835 | static hashval_t | |
dee91e82 | 25836 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25837 | { |
9a3c8263 SM |
25838 | const struct dwarf2_per_cu_offset_and_type *ofs |
25839 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25840 | |
9c541725 | 25841 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25842 | } |
25843 | ||
dee91e82 | 25844 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25845 | |
25846 | static int | |
dee91e82 | 25847 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25848 | { |
9a3c8263 SM |
25849 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25850 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25851 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25852 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25853 | |
dee91e82 | 25854 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25855 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25856 | } |
25857 | ||
25858 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25859 | table if necessary. For convenience, return TYPE. |
25860 | ||
25861 | The DIEs reading must have careful ordering to: | |
85102364 | 25862 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25863 | reading current DIE. |
25864 | * Not trying to dereference contents of still incompletely read in types | |
25865 | while reading in other DIEs. | |
25866 | * Enable referencing still incompletely read in types just by a pointer to | |
25867 | the type without accessing its fields. | |
25868 | ||
25869 | Therefore caller should follow these rules: | |
25870 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25871 | before building the type and calling set_die_type. | |
e71ec853 | 25872 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25873 | possible before fetching more types to complete the current type. |
25874 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25875 | |
f792889a | 25876 | static struct type * |
1c379e20 DJ |
25877 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25878 | { | |
518817b3 SM |
25879 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25880 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25881 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25882 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25883 | struct attribute *attr; |
25884 | struct dynamic_prop prop; | |
1c379e20 | 25885 | |
b4ba55a1 JB |
25886 | /* For Ada types, make sure that the gnat-specific data is always |
25887 | initialized (if not already set). There are a few types where | |
25888 | we should not be doing so, because the type-specific area is | |
25889 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25890 | where the type-specific area is used to store the floatformat). | |
25891 | But this is not a problem, because the gnat-specific information | |
25892 | is actually not needed for these types. */ | |
25893 | if (need_gnat_info (cu) | |
25894 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25895 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25896 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25897 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25898 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25899 | && !HAVE_GNAT_AUX_INFO (type)) |
25900 | INIT_GNAT_SPECIFIC (type); | |
25901 | ||
3f2f83dd KB |
25902 | /* Read DW_AT_allocated and set in type. */ |
25903 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25904 | if (attr_form_is_block (attr)) | |
25905 | { | |
9a49df9d AB |
25906 | struct type *prop_type |
25907 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25908 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25909 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25910 | } |
25911 | else if (attr != NULL) | |
25912 | { | |
b98664d3 | 25913 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25914 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25915 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25916 | } |
25917 | ||
25918 | /* Read DW_AT_associated and set in type. */ | |
25919 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25920 | if (attr_form_is_block (attr)) | |
25921 | { | |
9a49df9d AB |
25922 | struct type *prop_type |
25923 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25924 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25925 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25926 | } |
25927 | else if (attr != NULL) | |
25928 | { | |
b98664d3 | 25929 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25930 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25931 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25932 | } |
25933 | ||
3cdcd0ce JB |
25934 | /* Read DW_AT_data_location and set in type. */ |
25935 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d AB |
25936 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
25937 | dwarf2_per_cu_addr_type (cu->per_cu))) | |
50a82047 | 25938 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25939 | |
dee91e82 | 25940 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25941 | { |
dee91e82 DE |
25942 | dwarf2_per_objfile->die_type_hash = |
25943 | htab_create_alloc_ex (127, | |
25944 | per_cu_offset_and_type_hash, | |
25945 | per_cu_offset_and_type_eq, | |
25946 | NULL, | |
25947 | &objfile->objfile_obstack, | |
25948 | hashtab_obstack_allocate, | |
25949 | dummy_obstack_deallocate); | |
f792889a | 25950 | } |
1c379e20 | 25951 | |
dee91e82 | 25952 | ofs.per_cu = cu->per_cu; |
9c541725 | 25953 | ofs.sect_off = die->sect_off; |
1c379e20 | 25954 | ofs.type = type; |
dee91e82 DE |
25955 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25956 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25957 | if (*slot) |
b98664d3 | 25958 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25959 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25960 | *slot = XOBNEW (&objfile->objfile_obstack, |
25961 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25962 | **slot = ofs; |
f792889a | 25963 | return type; |
1c379e20 DJ |
25964 | } |
25965 | ||
9c541725 | 25966 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25967 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25968 | |
25969 | static struct type * | |
9c541725 | 25970 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25971 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25972 | { |
dee91e82 | 25973 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25974 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25975 | |
dee91e82 | 25976 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25977 | return NULL; |
1c379e20 | 25978 | |
dee91e82 | 25979 | ofs.per_cu = per_cu; |
9c541725 | 25980 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25981 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25982 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25983 | if (slot) |
25984 | return slot->type; | |
25985 | else | |
25986 | return NULL; | |
25987 | } | |
25988 | ||
02142a6c | 25989 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25990 | or return NULL if DIE does not have a saved type. */ |
25991 | ||
25992 | static struct type * | |
25993 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25994 | { | |
9c541725 | 25995 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25996 | } |
25997 | ||
10b3939b DJ |
25998 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25999 | ||
26000 | static void | |
26001 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
26002 | struct dwarf2_per_cu_data *ref_per_cu) | |
26003 | { | |
26004 | void **slot; | |
26005 | ||
26006 | if (cu->dependencies == NULL) | |
26007 | cu->dependencies | |
26008 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
26009 | NULL, &cu->comp_unit_obstack, | |
26010 | hashtab_obstack_allocate, | |
26011 | dummy_obstack_deallocate); | |
26012 | ||
26013 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
26014 | if (*slot == NULL) | |
26015 | *slot = ref_per_cu; | |
26016 | } | |
1c379e20 | 26017 | |
f504f079 DE |
26018 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
26019 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
26020 | cache that we must keep because we are keeping CU. */ |
26021 | ||
10b3939b DJ |
26022 | static int |
26023 | dwarf2_mark_helper (void **slot, void *data) | |
26024 | { | |
26025 | struct dwarf2_per_cu_data *per_cu; | |
26026 | ||
26027 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
26028 | |
26029 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
26030 | reading of the chain. As such dependencies remain valid it is not much | |
26031 | useful to track and undo them during QUIT cleanups. */ | |
26032 | if (per_cu->cu == NULL) | |
26033 | return 1; | |
26034 | ||
10b3939b DJ |
26035 | if (per_cu->cu->mark) |
26036 | return 1; | |
9068261f | 26037 | per_cu->cu->mark = true; |
10b3939b DJ |
26038 | |
26039 | if (per_cu->cu->dependencies != NULL) | |
26040 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
26041 | ||
26042 | return 1; | |
26043 | } | |
26044 | ||
f504f079 DE |
26045 | /* Set the mark field in CU and in every other compilation unit in the |
26046 | cache that we must keep because we are keeping CU. */ | |
26047 | ||
ae038cb0 DJ |
26048 | static void |
26049 | dwarf2_mark (struct dwarf2_cu *cu) | |
26050 | { | |
26051 | if (cu->mark) | |
26052 | return; | |
9068261f | 26053 | cu->mark = true; |
10b3939b DJ |
26054 | if (cu->dependencies != NULL) |
26055 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
26056 | } |
26057 | ||
26058 | static void | |
26059 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
26060 | { | |
26061 | while (per_cu) | |
26062 | { | |
9068261f | 26063 | per_cu->cu->mark = false; |
ae038cb0 DJ |
26064 | per_cu = per_cu->cu->read_in_chain; |
26065 | } | |
72bf9492 DJ |
26066 | } |
26067 | ||
72bf9492 DJ |
26068 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
26069 | is its offset in .debug_info for this objfile. */ | |
26070 | ||
26071 | static hashval_t | |
26072 | partial_die_hash (const void *item) | |
26073 | { | |
9a3c8263 SM |
26074 | const struct partial_die_info *part_die |
26075 | = (const struct partial_die_info *) item; | |
9a619af0 | 26076 | |
9c541725 | 26077 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
26078 | } |
26079 | ||
26080 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
26081 | are equal if they have the same offset. */ | |
26082 | ||
26083 | static int | |
26084 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
26085 | { | |
9a3c8263 SM |
26086 | const struct partial_die_info *part_die_lhs |
26087 | = (const struct partial_die_info *) item_lhs; | |
26088 | const struct partial_die_info *part_die_rhs | |
26089 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 26090 | |
9c541725 | 26091 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
26092 | } |
26093 | ||
3c3bb058 AB |
26094 | struct cmd_list_element *set_dwarf_cmdlist; |
26095 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
26096 | |
26097 | static void | |
981a3fb3 | 26098 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 26099 | { |
b4f54984 | 26100 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 26101 | gdb_stdout); |
ae038cb0 DJ |
26102 | } |
26103 | ||
26104 | static void | |
981a3fb3 | 26105 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 26106 | { |
b4f54984 | 26107 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
26108 | } |
26109 | ||
491144b5 | 26110 | bool dwarf_always_disassemble; |
437afbb8 | 26111 | |
437afbb8 | 26112 | static void |
cd4fb1b2 SM |
26113 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
26114 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 26115 | { |
cd4fb1b2 SM |
26116 | fprintf_filtered (file, |
26117 | _("Whether to always disassemble " | |
26118 | "DWARF expressions is %s.\n"), | |
26119 | value); | |
9291a0cd TT |
26120 | } |
26121 | ||
9291a0cd | 26122 | static void |
cd4fb1b2 SM |
26123 | show_check_physname (struct ui_file *file, int from_tty, |
26124 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 26125 | { |
cd4fb1b2 SM |
26126 | fprintf_filtered (file, |
26127 | _("Whether to check \"physname\" is %s.\n"), | |
26128 | value); | |
9291a0cd TT |
26129 | } |
26130 | ||
6c265988 | 26131 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 26132 | void |
6c265988 | 26133 | _initialize_dwarf2_read () |
9291a0cd | 26134 | { |
cd4fb1b2 SM |
26135 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
26136 | Set DWARF specific variables.\n\ | |
590042fc | 26137 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
26138 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
26139 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 26140 | |
cd4fb1b2 | 26141 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
26142 | Show DWARF specific variables.\n\ |
26143 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
26144 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
26145 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 26146 | |
cd4fb1b2 SM |
26147 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
26148 | &dwarf_max_cache_age, _("\ | |
26149 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
26150 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
26151 | A higher limit means that cached compilation units will be stored\n\ | |
26152 | in memory longer, and more total memory will be used. Zero disables\n\ | |
26153 | caching, which can slow down startup."), | |
26154 | NULL, | |
26155 | show_dwarf_max_cache_age, | |
26156 | &set_dwarf_cmdlist, | |
26157 | &show_dwarf_cmdlist); | |
156942c7 | 26158 | |
cd4fb1b2 SM |
26159 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
26160 | &dwarf_always_disassemble, _("\ | |
26161 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
26162 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
26163 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
26164 | syntax. When disabled, expressions will be printed in a more\n\ | |
26165 | conversational style, when possible."), | |
26166 | NULL, | |
26167 | show_dwarf_always_disassemble, | |
26168 | &set_dwarf_cmdlist, | |
26169 | &show_dwarf_cmdlist); | |
9291a0cd | 26170 | |
cd4fb1b2 SM |
26171 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
26172 | Set debugging of the DWARF reader."), _("\ | |
26173 | Show debugging of the DWARF reader."), _("\ | |
26174 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
26175 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
26176 | information. A value greater than 1 provides more verbose information."), | |
26177 | NULL, | |
26178 | NULL, | |
26179 | &setdebuglist, &showdebuglist); | |
9291a0cd | 26180 | |
cd4fb1b2 SM |
26181 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
26182 | Set debugging of the DWARF DIE reader."), _("\ | |
26183 | Show debugging of the DWARF DIE reader."), _("\ | |
26184 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
26185 | The value is the maximum depth to print."), | |
26186 | NULL, | |
26187 | NULL, | |
26188 | &setdebuglist, &showdebuglist); | |
9291a0cd | 26189 | |
cd4fb1b2 SM |
26190 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
26191 | Set debugging of the dwarf line reader."), _("\ | |
26192 | Show debugging of the dwarf line reader."), _("\ | |
26193 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
26194 | A value of 1 (one) provides basic information.\n\ | |
26195 | A value greater than 1 provides more verbose information."), | |
26196 | NULL, | |
26197 | NULL, | |
26198 | &setdebuglist, &showdebuglist); | |
437afbb8 | 26199 | |
cd4fb1b2 SM |
26200 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
26201 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
26202 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
26203 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
26204 | the demangler."), | |
26205 | NULL, show_check_physname, | |
26206 | &setdebuglist, &showdebuglist); | |
900e11f9 | 26207 | |
e615022a DE |
26208 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
26209 | no_class, &use_deprecated_index_sections, _("\ | |
26210 | Set whether to use deprecated gdb_index sections."), _("\ | |
26211 | Show whether to use deprecated gdb_index sections."), _("\ | |
26212 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
26213 | Normally they are ignored either because of a missing feature or\n\ | |
26214 | performance issue.\n\ | |
26215 | Warning: This option must be enabled before gdb reads the file."), | |
26216 | NULL, | |
26217 | NULL, | |
26218 | &setlist, &showlist); | |
26219 | ||
f1e6e072 TT |
26220 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
26221 | &dwarf2_locexpr_funcs); | |
26222 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
26223 | &dwarf2_loclist_funcs); | |
26224 | ||
26225 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
26226 | &dwarf2_block_frame_base_locexpr_funcs); | |
26227 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
26228 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
26229 | |
26230 | #if GDB_SELF_TEST | |
26231 | selftests::register_test ("dw2_expand_symtabs_matching", | |
26232 | selftests::dw2_expand_symtabs_matching::run_test); | |
26233 | #endif | |
6502dd73 | 26234 | } |