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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
28e7fd62 | 3 | Copyright (C) 1994-2013 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 SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 KS |
55 | #include "typeprint.h" |
56 | #include "jv-lang.h" | |
ccefe4c4 | 57 | #include "psympriv.h" |
9291a0cd TT |
58 | #include "exceptions.h" |
59 | #include "gdb_stat.h" | |
96d19272 | 60 | #include "completer.h" |
34eaf542 | 61 | #include "vec.h" |
98bfdba5 | 62 | #include "c-lang.h" |
a766d390 | 63 | #include "go-lang.h" |
98bfdba5 | 64 | #include "valprint.h" |
3019eac3 | 65 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 66 | #include "gdb/gdb-index.h" |
60d5a603 | 67 | #include <ctype.h> |
cbb099e8 | 68 | #include "gdb_bfd.h" |
4357ac6c | 69 | #include "f-lang.h" |
05cba821 | 70 | #include "source.h" |
614c279d | 71 | #include "filestuff.h" |
dc294be5 | 72 | #include "build-id.h" |
4c2df51b | 73 | |
c906108c SS |
74 | #include <fcntl.h> |
75 | #include "gdb_string.h" | |
4bdf3d34 | 76 | #include "gdb_assert.h" |
c906108c | 77 | #include <sys/types.h> |
d8151005 | 78 | |
34eaf542 TT |
79 | typedef struct symbol *symbolp; |
80 | DEF_VEC_P (symbolp); | |
81 | ||
45cfd468 DE |
82 | /* When non-zero, print basic high level tracing messages. |
83 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
84 | static int dwarf2_read_debug = 0; | |
85 | ||
d97bc12b | 86 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 87 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 88 | |
900e11f9 JK |
89 | /* When non-zero, cross-check physname against demangler. */ |
90 | static int check_physname = 0; | |
91 | ||
481860b3 | 92 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 93 | static int use_deprecated_index_sections = 0; |
481860b3 | 94 | |
6502dd73 DJ |
95 | static const struct objfile_data *dwarf2_objfile_data_key; |
96 | ||
f1e6e072 TT |
97 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
98 | ||
99 | static int dwarf2_locexpr_index; | |
100 | static int dwarf2_loclist_index; | |
101 | static int dwarf2_locexpr_block_index; | |
102 | static int dwarf2_loclist_block_index; | |
103 | ||
73869dc2 DE |
104 | /* A descriptor for dwarf sections. |
105 | ||
106 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
107 | scanned. BUFFER, READIN are filled in later when the section is read. | |
108 | If the section contained compressed data then SIZE is updated to record | |
109 | the uncompressed size of the section. | |
110 | ||
111 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
112 | creating the concept of virtual sections contained within a real section. | |
113 | In DWP V2 the sections of the input DWO files are concatenated together | |
114 | into one section, but section offsets are kept relative to the original | |
115 | input section. | |
116 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
117 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
118 | describe the virtual section. */ | |
119 | ||
dce234bc PP |
120 | struct dwarf2_section_info |
121 | { | |
73869dc2 DE |
122 | union |
123 | { | |
e5aa3347 | 124 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
125 | asection *asection; |
126 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 127 | section. */ |
73869dc2 DE |
128 | struct dwarf2_section_info *containing_section; |
129 | } s; | |
19ac8c2e | 130 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 131 | const gdb_byte *buffer; |
73869dc2 | 132 | /* The size of the section, real or virtual. */ |
dce234bc | 133 | bfd_size_type size; |
73869dc2 DE |
134 | /* If this is a virtual section, the offset in the real section. |
135 | Only valid if is_virtual. */ | |
136 | bfd_size_type virtual_offset; | |
be391dca | 137 | /* True if we have tried to read this section. */ |
73869dc2 DE |
138 | char readin; |
139 | /* True if this is a virtual section, False otherwise. | |
140 | This specifies which of s.asection and s.containing_section to use. */ | |
141 | char is_virtual; | |
dce234bc PP |
142 | }; |
143 | ||
8b70b953 TT |
144 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
145 | DEF_VEC_O (dwarf2_section_info_def); | |
146 | ||
9291a0cd TT |
147 | /* All offsets in the index are of this type. It must be |
148 | architecture-independent. */ | |
149 | typedef uint32_t offset_type; | |
150 | ||
151 | DEF_VEC_I (offset_type); | |
152 | ||
156942c7 DE |
153 | /* Ensure only legit values are used. */ |
154 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
155 | do { \ | |
156 | gdb_assert ((unsigned int) (value) <= 1); \ | |
157 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
158 | } while (0) | |
159 | ||
160 | /* Ensure only legit values are used. */ | |
161 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
162 | do { \ | |
163 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
164 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
165 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
166 | } while (0) | |
167 | ||
168 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
169 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
170 | do { \ | |
171 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
172 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
173 | } while (0) | |
174 | ||
9291a0cd TT |
175 | /* A description of the mapped index. The file format is described in |
176 | a comment by the code that writes the index. */ | |
177 | struct mapped_index | |
178 | { | |
559a7a62 JK |
179 | /* Index data format version. */ |
180 | int version; | |
181 | ||
9291a0cd TT |
182 | /* The total length of the buffer. */ |
183 | off_t total_size; | |
b11b1f88 | 184 | |
9291a0cd TT |
185 | /* A pointer to the address table data. */ |
186 | const gdb_byte *address_table; | |
b11b1f88 | 187 | |
9291a0cd TT |
188 | /* Size of the address table data in bytes. */ |
189 | offset_type address_table_size; | |
b11b1f88 | 190 | |
3876f04e DE |
191 | /* The symbol table, implemented as a hash table. */ |
192 | const offset_type *symbol_table; | |
b11b1f88 | 193 | |
9291a0cd | 194 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 195 | offset_type symbol_table_slots; |
b11b1f88 | 196 | |
9291a0cd TT |
197 | /* A pointer to the constant pool. */ |
198 | const char *constant_pool; | |
199 | }; | |
200 | ||
95554aad TT |
201 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
202 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
203 | ||
9cdd5dbd DE |
204 | /* Collection of data recorded per objfile. |
205 | This hangs off of dwarf2_objfile_data_key. */ | |
206 | ||
6502dd73 DJ |
207 | struct dwarf2_per_objfile |
208 | { | |
dce234bc PP |
209 | struct dwarf2_section_info info; |
210 | struct dwarf2_section_info abbrev; | |
211 | struct dwarf2_section_info line; | |
dce234bc PP |
212 | struct dwarf2_section_info loc; |
213 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 214 | struct dwarf2_section_info macro; |
dce234bc PP |
215 | struct dwarf2_section_info str; |
216 | struct dwarf2_section_info ranges; | |
3019eac3 | 217 | struct dwarf2_section_info addr; |
dce234bc PP |
218 | struct dwarf2_section_info frame; |
219 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 220 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 221 | |
8b70b953 TT |
222 | VEC (dwarf2_section_info_def) *types; |
223 | ||
be391dca TT |
224 | /* Back link. */ |
225 | struct objfile *objfile; | |
226 | ||
d467dd73 | 227 | /* Table of all the compilation units. This is used to locate |
10b3939b | 228 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
229 | struct dwarf2_per_cu_data **all_comp_units; |
230 | ||
231 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
232 | int n_comp_units; | |
233 | ||
1fd400ff | 234 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 235 | int n_type_units; |
1fd400ff | 236 | |
a2ce51a0 DE |
237 | /* The .debug_types-related CUs (TUs). |
238 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 239 | struct signatured_type **all_type_units; |
1fd400ff | 240 | |
f4dc4d17 DE |
241 | /* The number of entries in all_type_unit_groups. */ |
242 | int n_type_unit_groups; | |
243 | ||
244 | /* Table of type unit groups. | |
245 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
246 | struct type_unit_group **all_type_unit_groups; | |
247 | ||
248 | /* Table of struct type_unit_group objects. | |
249 | The hash key is the DW_AT_stmt_list value. */ | |
250 | htab_t type_unit_groups; | |
72dca2f5 | 251 | |
348e048f DE |
252 | /* A table mapping .debug_types signatures to its signatured_type entry. |
253 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
254 | htab_t signatured_types; | |
255 | ||
f4dc4d17 DE |
256 | /* Type unit statistics, to see how well the scaling improvements |
257 | are doing. */ | |
258 | struct tu_stats | |
259 | { | |
260 | int nr_uniq_abbrev_tables; | |
261 | int nr_symtabs; | |
262 | int nr_symtab_sharers; | |
263 | int nr_stmt_less_type_units; | |
264 | } tu_stats; | |
265 | ||
266 | /* A chain of compilation units that are currently read in, so that | |
267 | they can be freed later. */ | |
268 | struct dwarf2_per_cu_data *read_in_chain; | |
269 | ||
3019eac3 DE |
270 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
271 | This is NULL if the table hasn't been allocated yet. */ | |
272 | htab_t dwo_files; | |
273 | ||
80626a55 DE |
274 | /* Non-zero if we've check for whether there is a DWP file. */ |
275 | int dwp_checked; | |
276 | ||
277 | /* The DWP file if there is one, or NULL. */ | |
278 | struct dwp_file *dwp_file; | |
279 | ||
36586728 TT |
280 | /* The shared '.dwz' file, if one exists. This is used when the |
281 | original data was compressed using 'dwz -m'. */ | |
282 | struct dwz_file *dwz_file; | |
283 | ||
72dca2f5 FR |
284 | /* A flag indicating wether this objfile has a section loaded at a |
285 | VMA of 0. */ | |
286 | int has_section_at_zero; | |
9291a0cd | 287 | |
ae2de4f8 DE |
288 | /* True if we are using the mapped index, |
289 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
290 | unsigned char using_index; |
291 | ||
ae2de4f8 | 292 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 293 | struct mapped_index *index_table; |
98bfdba5 | 294 | |
7b9f3c50 | 295 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
296 | TUs typically share line table entries with a CU, so we maintain a |
297 | separate table of all line table entries to support the sharing. | |
298 | Note that while there can be way more TUs than CUs, we've already | |
299 | sorted all the TUs into "type unit groups", grouped by their | |
300 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
301 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
302 | htab_t quick_file_names_table; |
303 | ||
98bfdba5 PA |
304 | /* Set during partial symbol reading, to prevent queueing of full |
305 | symbols. */ | |
306 | int reading_partial_symbols; | |
673bfd45 | 307 | |
dee91e82 | 308 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 309 | This is NULL if not allocated yet. |
02142a6c | 310 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 311 | htab_t die_type_hash; |
95554aad TT |
312 | |
313 | /* The CUs we recently read. */ | |
314 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
315 | }; |
316 | ||
317 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 318 | |
251d32d9 | 319 | /* Default names of the debugging sections. */ |
c906108c | 320 | |
233a11ab CS |
321 | /* Note that if the debugging section has been compressed, it might |
322 | have a name like .zdebug_info. */ | |
323 | ||
9cdd5dbd DE |
324 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
325 | { | |
251d32d9 TG |
326 | { ".debug_info", ".zdebug_info" }, |
327 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
328 | { ".debug_line", ".zdebug_line" }, | |
329 | { ".debug_loc", ".zdebug_loc" }, | |
330 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 331 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
332 | { ".debug_str", ".zdebug_str" }, |
333 | { ".debug_ranges", ".zdebug_ranges" }, | |
334 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 335 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
336 | { ".debug_frame", ".zdebug_frame" }, |
337 | { ".eh_frame", NULL }, | |
24d3216f TT |
338 | { ".gdb_index", ".zgdb_index" }, |
339 | 23 | |
251d32d9 | 340 | }; |
c906108c | 341 | |
80626a55 | 342 | /* List of DWO/DWP sections. */ |
3019eac3 | 343 | |
80626a55 | 344 | static const struct dwop_section_names |
3019eac3 DE |
345 | { |
346 | struct dwarf2_section_names abbrev_dwo; | |
347 | struct dwarf2_section_names info_dwo; | |
348 | struct dwarf2_section_names line_dwo; | |
349 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
350 | struct dwarf2_section_names macinfo_dwo; |
351 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
352 | struct dwarf2_section_names str_dwo; |
353 | struct dwarf2_section_names str_offsets_dwo; | |
354 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
355 | struct dwarf2_section_names cu_index; |
356 | struct dwarf2_section_names tu_index; | |
3019eac3 | 357 | } |
80626a55 | 358 | dwop_section_names = |
3019eac3 DE |
359 | { |
360 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
361 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
362 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
363 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
364 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
365 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
366 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
367 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
368 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
369 | { ".debug_cu_index", ".zdebug_cu_index" }, |
370 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
371 | }; |
372 | ||
c906108c SS |
373 | /* local data types */ |
374 | ||
107d2387 AC |
375 | /* The data in a compilation unit header, after target2host |
376 | translation, looks like this. */ | |
c906108c | 377 | struct comp_unit_head |
a738430d | 378 | { |
c764a876 | 379 | unsigned int length; |
a738430d | 380 | short version; |
a738430d MK |
381 | unsigned char addr_size; |
382 | unsigned char signed_addr_p; | |
b64f50a1 | 383 | sect_offset abbrev_offset; |
57349743 | 384 | |
a738430d MK |
385 | /* Size of file offsets; either 4 or 8. */ |
386 | unsigned int offset_size; | |
57349743 | 387 | |
a738430d MK |
388 | /* Size of the length field; either 4 or 12. */ |
389 | unsigned int initial_length_size; | |
57349743 | 390 | |
a738430d MK |
391 | /* Offset to the first byte of this compilation unit header in the |
392 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 393 | sect_offset offset; |
57349743 | 394 | |
d00adf39 DE |
395 | /* Offset to first die in this cu from the start of the cu. |
396 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 397 | cu_offset first_die_offset; |
a738430d | 398 | }; |
c906108c | 399 | |
3da10d80 KS |
400 | /* Type used for delaying computation of method physnames. |
401 | See comments for compute_delayed_physnames. */ | |
402 | struct delayed_method_info | |
403 | { | |
404 | /* The type to which the method is attached, i.e., its parent class. */ | |
405 | struct type *type; | |
406 | ||
407 | /* The index of the method in the type's function fieldlists. */ | |
408 | int fnfield_index; | |
409 | ||
410 | /* The index of the method in the fieldlist. */ | |
411 | int index; | |
412 | ||
413 | /* The name of the DIE. */ | |
414 | const char *name; | |
415 | ||
416 | /* The DIE associated with this method. */ | |
417 | struct die_info *die; | |
418 | }; | |
419 | ||
420 | typedef struct delayed_method_info delayed_method_info; | |
421 | DEF_VEC_O (delayed_method_info); | |
422 | ||
e7c27a73 DJ |
423 | /* Internal state when decoding a particular compilation unit. */ |
424 | struct dwarf2_cu | |
425 | { | |
426 | /* The objfile containing this compilation unit. */ | |
427 | struct objfile *objfile; | |
428 | ||
d00adf39 | 429 | /* The header of the compilation unit. */ |
e7c27a73 | 430 | struct comp_unit_head header; |
e142c38c | 431 | |
d00adf39 DE |
432 | /* Base address of this compilation unit. */ |
433 | CORE_ADDR base_address; | |
434 | ||
435 | /* Non-zero if base_address has been set. */ | |
436 | int base_known; | |
437 | ||
e142c38c DJ |
438 | /* The language we are debugging. */ |
439 | enum language language; | |
440 | const struct language_defn *language_defn; | |
441 | ||
b0f35d58 DL |
442 | const char *producer; |
443 | ||
e142c38c DJ |
444 | /* The generic symbol table building routines have separate lists for |
445 | file scope symbols and all all other scopes (local scopes). So | |
446 | we need to select the right one to pass to add_symbol_to_list(). | |
447 | We do it by keeping a pointer to the correct list in list_in_scope. | |
448 | ||
449 | FIXME: The original dwarf code just treated the file scope as the | |
450 | first local scope, and all other local scopes as nested local | |
451 | scopes, and worked fine. Check to see if we really need to | |
452 | distinguish these in buildsym.c. */ | |
453 | struct pending **list_in_scope; | |
454 | ||
433df2d4 DE |
455 | /* The abbrev table for this CU. |
456 | Normally this points to the abbrev table in the objfile. | |
457 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
458 | struct abbrev_table *abbrev_table; | |
72bf9492 | 459 | |
b64f50a1 JK |
460 | /* Hash table holding all the loaded partial DIEs |
461 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
462 | htab_t partial_dies; |
463 | ||
464 | /* Storage for things with the same lifetime as this read-in compilation | |
465 | unit, including partial DIEs. */ | |
466 | struct obstack comp_unit_obstack; | |
467 | ||
ae038cb0 DJ |
468 | /* When multiple dwarf2_cu structures are living in memory, this field |
469 | chains them all together, so that they can be released efficiently. | |
470 | We will probably also want a generation counter so that most-recently-used | |
471 | compilation units are cached... */ | |
472 | struct dwarf2_per_cu_data *read_in_chain; | |
473 | ||
69d751e3 | 474 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
475 | struct dwarf2_per_cu_data *per_cu; |
476 | ||
477 | /* How many compilation units ago was this CU last referenced? */ | |
478 | int last_used; | |
479 | ||
b64f50a1 JK |
480 | /* A hash table of DIE cu_offset for following references with |
481 | die_info->offset.sect_off as hash. */ | |
51545339 | 482 | htab_t die_hash; |
10b3939b DJ |
483 | |
484 | /* Full DIEs if read in. */ | |
485 | struct die_info *dies; | |
486 | ||
487 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
488 | units referenced by this one. Only set during full symbol processing; | |
489 | partial symbol tables do not have dependencies. */ | |
490 | htab_t dependencies; | |
491 | ||
cb1df416 DJ |
492 | /* Header data from the line table, during full symbol processing. */ |
493 | struct line_header *line_header; | |
494 | ||
3da10d80 KS |
495 | /* A list of methods which need to have physnames computed |
496 | after all type information has been read. */ | |
497 | VEC (delayed_method_info) *method_list; | |
498 | ||
96408a79 SA |
499 | /* To be copied to symtab->call_site_htab. */ |
500 | htab_t call_site_htab; | |
501 | ||
034e5797 DE |
502 | /* Non-NULL if this CU came from a DWO file. |
503 | There is an invariant here that is important to remember: | |
504 | Except for attributes copied from the top level DIE in the "main" | |
505 | (or "stub") file in preparation for reading the DWO file | |
506 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
507 | Either there isn't a DWO file (in which case this is NULL and the point | |
508 | is moot), or there is and either we're not going to read it (in which | |
509 | case this is NULL) or there is and we are reading it (in which case this | |
510 | is non-NULL). */ | |
3019eac3 DE |
511 | struct dwo_unit *dwo_unit; |
512 | ||
513 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
514 | (zero is a valid value though). | |
515 | Note this value comes from the stub CU/TU's DIE. */ | |
516 | ULONGEST addr_base; | |
517 | ||
2e3cf129 DE |
518 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
519 | (zero is a valid value though). | |
520 | Note this value comes from the stub CU/TU's DIE. | |
521 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
522 | be used without needing to know whether DWO files are in use or not. |
523 | N.B. This does not apply to DW_AT_ranges appearing in | |
524 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
525 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
526 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
527 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
528 | ULONGEST ranges_base; |
529 | ||
ae038cb0 DJ |
530 | /* Mark used when releasing cached dies. */ |
531 | unsigned int mark : 1; | |
532 | ||
8be455d7 JK |
533 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
534 | This test is imperfect as there may exist optimized debug code not using | |
535 | any location list and still facing inlining issues if handled as | |
536 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 537 | unsigned int has_loclist : 1; |
ba919b58 | 538 | |
1b80a9fa JK |
539 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
540 | if all the producer_is_* fields are valid. This information is cached | |
541 | because profiling CU expansion showed excessive time spent in | |
542 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
543 | unsigned int checked_producer : 1; |
544 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 545 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 546 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
547 | |
548 | /* When set, the file that we're processing is known to have | |
549 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
550 | this information, but later versions do. */ | |
551 | ||
552 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
553 | }; |
554 | ||
10b3939b DJ |
555 | /* Persistent data held for a compilation unit, even when not |
556 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 557 | read_symtab_private field of the psymtab. */ |
10b3939b | 558 | |
ae038cb0 DJ |
559 | struct dwarf2_per_cu_data |
560 | { | |
36586728 | 561 | /* The start offset and length of this compilation unit. |
45452591 | 562 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
563 | initial_length_size. |
564 | If the DIE refers to a DWO file, this is always of the original die, | |
565 | not the DWO file. */ | |
b64f50a1 | 566 | sect_offset offset; |
36586728 | 567 | unsigned int length; |
ae038cb0 DJ |
568 | |
569 | /* Flag indicating this compilation unit will be read in before | |
570 | any of the current compilation units are processed. */ | |
c764a876 | 571 | unsigned int queued : 1; |
ae038cb0 | 572 | |
0d99eb77 DE |
573 | /* This flag will be set when reading partial DIEs if we need to load |
574 | absolutely all DIEs for this compilation unit, instead of just the ones | |
575 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
576 | hash table and don't find it. */ |
577 | unsigned int load_all_dies : 1; | |
578 | ||
0186c6a7 DE |
579 | /* Non-zero if this CU is from .debug_types. |
580 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
581 | this is non-zero. */ | |
3019eac3 DE |
582 | unsigned int is_debug_types : 1; |
583 | ||
36586728 TT |
584 | /* Non-zero if this CU is from the .dwz file. */ |
585 | unsigned int is_dwz : 1; | |
586 | ||
a2ce51a0 DE |
587 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
588 | This flag is only valid if is_debug_types is true. | |
589 | We can't read a CU directly from a DWO file: There are required | |
590 | attributes in the stub. */ | |
591 | unsigned int reading_dwo_directly : 1; | |
592 | ||
7ee85ab1 DE |
593 | /* Non-zero if the TU has been read. |
594 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
595 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
596 | fetching them from random other DWOs (due to comdat folding). | |
597 | If the TU has already been read, the optimization is unnecessary | |
598 | (and unwise - we don't want to change where gdb thinks the TU lives | |
599 | "midflight"). | |
600 | This flag is only valid if is_debug_types is true. */ | |
601 | unsigned int tu_read : 1; | |
602 | ||
3019eac3 DE |
603 | /* The section this CU/TU lives in. |
604 | If the DIE refers to a DWO file, this is always the original die, | |
605 | not the DWO file. */ | |
8a0459fd | 606 | struct dwarf2_section_info *section; |
348e048f | 607 | |
17ea53c3 JK |
608 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
609 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 610 | struct dwarf2_cu *cu; |
1c379e20 | 611 | |
9cdd5dbd DE |
612 | /* The corresponding objfile. |
613 | Normally we can get the objfile from dwarf2_per_objfile. | |
614 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
615 | struct objfile *objfile; |
616 | ||
617 | /* When using partial symbol tables, the 'psymtab' field is active. | |
618 | Otherwise the 'quick' field is active. */ | |
619 | union | |
620 | { | |
621 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 622 | or NULL for unread partial units. */ |
9291a0cd TT |
623 | struct partial_symtab *psymtab; |
624 | ||
625 | /* Data needed by the "quick" functions. */ | |
626 | struct dwarf2_per_cu_quick_data *quick; | |
627 | } v; | |
95554aad | 628 | |
796a7ff8 DE |
629 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
630 | while reading psymtabs, used to compute the psymtab dependencies, | |
631 | and then cleared. Then it is filled in again while reading full | |
632 | symbols, and only deleted when the objfile is destroyed. | |
633 | ||
634 | This is also used to work around a difference between the way gold | |
635 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
636 | is a gold bug. For symbols coming from TUs, gold records in the index | |
637 | the CU that includes the TU instead of the TU itself. This breaks | |
638 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
639 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
640 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
641 | we need to look in TU Z to find X. Fortunately, this is akin to | |
642 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
643 | .gdb_index version <=7 this also records the TUs that the CU referred | |
644 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
645 | indices so we only pay a price for gold generated indices. |
646 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 647 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
648 | }; |
649 | ||
348e048f DE |
650 | /* Entry in the signatured_types hash table. */ |
651 | ||
652 | struct signatured_type | |
653 | { | |
42e7ad6c | 654 | /* The "per_cu" object of this type. |
ac9ec31b | 655 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
656 | N.B.: This is the first member so that it's easy to convert pointers |
657 | between them. */ | |
658 | struct dwarf2_per_cu_data per_cu; | |
659 | ||
3019eac3 | 660 | /* The type's signature. */ |
348e048f DE |
661 | ULONGEST signature; |
662 | ||
3019eac3 | 663 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
664 | If this TU is a DWO stub and the definition lives in a DWO file |
665 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
666 | cu_offset type_offset_in_tu; |
667 | ||
668 | /* Offset in the section of the type's DIE. | |
669 | If the definition lives in a DWO file, this is the offset in the | |
670 | .debug_types.dwo section. | |
671 | The value is zero until the actual value is known. | |
672 | Zero is otherwise not a valid section offset. */ | |
673 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
674 | |
675 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
676 | can share them. This points to the containing symtab. */ | |
677 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
678 | |
679 | /* The type. | |
680 | The first time we encounter this type we fully read it in and install it | |
681 | in the symbol tables. Subsequent times we only need the type. */ | |
682 | struct type *type; | |
a2ce51a0 DE |
683 | |
684 | /* Containing DWO unit. | |
685 | This field is valid iff per_cu.reading_dwo_directly. */ | |
686 | struct dwo_unit *dwo_unit; | |
348e048f DE |
687 | }; |
688 | ||
0186c6a7 DE |
689 | typedef struct signatured_type *sig_type_ptr; |
690 | DEF_VEC_P (sig_type_ptr); | |
691 | ||
094b34ac DE |
692 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
693 | This includes type_unit_group and quick_file_names. */ | |
694 | ||
695 | struct stmt_list_hash | |
696 | { | |
697 | /* The DWO unit this table is from or NULL if there is none. */ | |
698 | struct dwo_unit *dwo_unit; | |
699 | ||
700 | /* Offset in .debug_line or .debug_line.dwo. */ | |
701 | sect_offset line_offset; | |
702 | }; | |
703 | ||
f4dc4d17 DE |
704 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
705 | an object of this type. */ | |
706 | ||
707 | struct type_unit_group | |
708 | { | |
0186c6a7 | 709 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
710 | To simplify things we create an artificial CU that "includes" all the |
711 | type units using this stmt_list so that the rest of the code still has | |
712 | a "per_cu" handle on the symtab. | |
713 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 714 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
715 | struct dwarf2_per_cu_data per_cu; |
716 | ||
0186c6a7 DE |
717 | /* The TUs that share this DW_AT_stmt_list entry. |
718 | This is added to while parsing type units to build partial symtabs, | |
719 | and is deleted afterwards and not used again. */ | |
720 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 DE |
721 | |
722 | /* The primary symtab. | |
094b34ac DE |
723 | Type units in a group needn't all be defined in the same source file, |
724 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
725 | struct symtab *primary_symtab; |
726 | ||
094b34ac DE |
727 | /* The data used to construct the hash key. */ |
728 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
729 | |
730 | /* The number of symtabs from the line header. | |
731 | The value here must match line_header.num_file_names. */ | |
732 | unsigned int num_symtabs; | |
733 | ||
734 | /* The symbol tables for this TU (obtained from the files listed in | |
735 | DW_AT_stmt_list). | |
736 | WARNING: The order of entries here must match the order of entries | |
737 | in the line header. After the first TU using this type_unit_group, the | |
738 | line header for the subsequent TUs is recreated from this. This is done | |
739 | because we need to use the same symtabs for each TU using the same | |
740 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
741 | there's no guarantee the line header doesn't have duplicate entries. */ | |
742 | struct symtab **symtabs; | |
743 | }; | |
744 | ||
73869dc2 | 745 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
746 | |
747 | struct dwo_sections | |
748 | { | |
749 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
750 | struct dwarf2_section_info line; |
751 | struct dwarf2_section_info loc; | |
09262596 DE |
752 | struct dwarf2_section_info macinfo; |
753 | struct dwarf2_section_info macro; | |
3019eac3 DE |
754 | struct dwarf2_section_info str; |
755 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
756 | /* In the case of a virtual DWO file, these two are unused. */ |
757 | struct dwarf2_section_info info; | |
3019eac3 DE |
758 | VEC (dwarf2_section_info_def) *types; |
759 | }; | |
760 | ||
c88ee1f0 | 761 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
762 | |
763 | struct dwo_unit | |
764 | { | |
765 | /* Backlink to the containing struct dwo_file. */ | |
766 | struct dwo_file *dwo_file; | |
767 | ||
768 | /* The "id" that distinguishes this CU/TU. | |
769 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
770 | Since signatures came first, we stick with it for consistency. */ | |
771 | ULONGEST signature; | |
772 | ||
773 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 774 | struct dwarf2_section_info *section; |
3019eac3 | 775 | |
19ac8c2e | 776 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
777 | sect_offset offset; |
778 | unsigned int length; | |
779 | ||
780 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
781 | cu_offset type_offset_in_tu; | |
782 | }; | |
783 | ||
73869dc2 DE |
784 | /* include/dwarf2.h defines the DWP section codes. |
785 | It defines a max value but it doesn't define a min value, which we | |
786 | use for error checking, so provide one. */ | |
787 | ||
788 | enum dwp_v2_section_ids | |
789 | { | |
790 | DW_SECT_MIN = 1 | |
791 | }; | |
792 | ||
80626a55 | 793 | /* Data for one DWO file. |
57d63ce2 DE |
794 | |
795 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
796 | appears in a DWP file). DWP files don't really have DWO files per se - | |
797 | comdat folding of types "loses" the DWO file they came from, and from | |
798 | a high level view DWP files appear to contain a mass of random types. | |
799 | However, to maintain consistency with the non-DWP case we pretend DWP | |
800 | files contain virtual DWO files, and we assign each TU with one virtual | |
801 | DWO file (generally based on the line and abbrev section offsets - | |
802 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
803 | |
804 | struct dwo_file | |
805 | { | |
0ac5b59e | 806 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
807 | For virtual DWO files the name is constructed from the section offsets |
808 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
809 | from related CU+TUs. */ | |
0ac5b59e DE |
810 | const char *dwo_name; |
811 | ||
812 | /* The DW_AT_comp_dir attribute. */ | |
813 | const char *comp_dir; | |
3019eac3 | 814 | |
80626a55 DE |
815 | /* The bfd, when the file is open. Otherwise this is NULL. |
816 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
817 | bfd *dbfd; | |
3019eac3 | 818 | |
73869dc2 DE |
819 | /* The sections that make up this DWO file. |
820 | Remember that for virtual DWO files in DWP V2, these are virtual | |
821 | sections (for lack of a better name). */ | |
3019eac3 DE |
822 | struct dwo_sections sections; |
823 | ||
19c3d4c9 DE |
824 | /* The CU in the file. |
825 | We only support one because having more than one requires hacking the | |
826 | dwo_name of each to match, which is highly unlikely to happen. | |
827 | Doing this means all TUs can share comp_dir: We also assume that | |
828 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
829 | struct dwo_unit *cu; | |
3019eac3 DE |
830 | |
831 | /* Table of TUs in the file. | |
832 | Each element is a struct dwo_unit. */ | |
833 | htab_t tus; | |
834 | }; | |
835 | ||
80626a55 DE |
836 | /* These sections are what may appear in a DWP file. */ |
837 | ||
838 | struct dwp_sections | |
839 | { | |
73869dc2 | 840 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
841 | struct dwarf2_section_info str; |
842 | struct dwarf2_section_info cu_index; | |
843 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
844 | |
845 | /* These are only used by DWP version 2 files. | |
846 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
847 | sections are referenced by section number, and are not recorded here. | |
848 | In DWP version 2 there is at most one copy of all these sections, each | |
849 | section being (effectively) comprised of the concatenation of all of the | |
850 | individual sections that exist in the version 1 format. | |
851 | To keep the code simple we treat each of these concatenated pieces as a | |
852 | section itself (a virtual section?). */ | |
853 | struct dwarf2_section_info abbrev; | |
854 | struct dwarf2_section_info info; | |
855 | struct dwarf2_section_info line; | |
856 | struct dwarf2_section_info loc; | |
857 | struct dwarf2_section_info macinfo; | |
858 | struct dwarf2_section_info macro; | |
859 | struct dwarf2_section_info str_offsets; | |
860 | struct dwarf2_section_info types; | |
80626a55 DE |
861 | }; |
862 | ||
73869dc2 DE |
863 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
864 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 865 | |
73869dc2 | 866 | struct virtual_v1_dwo_sections |
80626a55 DE |
867 | { |
868 | struct dwarf2_section_info abbrev; | |
869 | struct dwarf2_section_info line; | |
870 | struct dwarf2_section_info loc; | |
871 | struct dwarf2_section_info macinfo; | |
872 | struct dwarf2_section_info macro; | |
873 | struct dwarf2_section_info str_offsets; | |
874 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 875 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
876 | struct dwarf2_section_info info_or_types; |
877 | }; | |
878 | ||
73869dc2 DE |
879 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
880 | In version 2, the sections of the DWO files are concatenated together | |
881 | and stored in one section of that name. Thus each ELF section contains | |
882 | several "virtual" sections. */ | |
883 | ||
884 | struct virtual_v2_dwo_sections | |
885 | { | |
886 | bfd_size_type abbrev_offset; | |
887 | bfd_size_type abbrev_size; | |
888 | ||
889 | bfd_size_type line_offset; | |
890 | bfd_size_type line_size; | |
891 | ||
892 | bfd_size_type loc_offset; | |
893 | bfd_size_type loc_size; | |
894 | ||
895 | bfd_size_type macinfo_offset; | |
896 | bfd_size_type macinfo_size; | |
897 | ||
898 | bfd_size_type macro_offset; | |
899 | bfd_size_type macro_size; | |
900 | ||
901 | bfd_size_type str_offsets_offset; | |
902 | bfd_size_type str_offsets_size; | |
903 | ||
904 | /* Each DWP hash table entry records one CU or one TU. | |
905 | That is recorded here, and copied to dwo_unit.section. */ | |
906 | bfd_size_type info_or_types_offset; | |
907 | bfd_size_type info_or_types_size; | |
908 | }; | |
909 | ||
80626a55 DE |
910 | /* Contents of DWP hash tables. */ |
911 | ||
912 | struct dwp_hash_table | |
913 | { | |
73869dc2 | 914 | uint32_t version, nr_columns; |
80626a55 | 915 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
916 | const gdb_byte *hash_table, *unit_table; |
917 | union | |
918 | { | |
919 | struct | |
920 | { | |
921 | const gdb_byte *indices; | |
922 | } v1; | |
923 | struct | |
924 | { | |
925 | /* This is indexed by column number and gives the id of the section | |
926 | in that column. */ | |
927 | #define MAX_NR_V2_DWO_SECTIONS \ | |
928 | (1 /* .debug_info or .debug_types */ \ | |
929 | + 1 /* .debug_abbrev */ \ | |
930 | + 1 /* .debug_line */ \ | |
931 | + 1 /* .debug_loc */ \ | |
932 | + 1 /* .debug_str_offsets */ \ | |
933 | + 1 /* .debug_macro or .debug_macinfo */) | |
934 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
935 | const gdb_byte *offsets; | |
936 | const gdb_byte *sizes; | |
937 | } v2; | |
938 | } section_pool; | |
80626a55 DE |
939 | }; |
940 | ||
941 | /* Data for one DWP file. */ | |
942 | ||
943 | struct dwp_file | |
944 | { | |
945 | /* Name of the file. */ | |
946 | const char *name; | |
947 | ||
73869dc2 DE |
948 | /* File format version. */ |
949 | int version; | |
950 | ||
93417882 | 951 | /* The bfd. */ |
80626a55 DE |
952 | bfd *dbfd; |
953 | ||
954 | /* Section info for this file. */ | |
955 | struct dwp_sections sections; | |
956 | ||
57d63ce2 | 957 | /* Table of CUs in the file. */ |
80626a55 DE |
958 | const struct dwp_hash_table *cus; |
959 | ||
960 | /* Table of TUs in the file. */ | |
961 | const struct dwp_hash_table *tus; | |
962 | ||
19ac8c2e DE |
963 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
964 | htab_t loaded_cus; | |
965 | htab_t loaded_tus; | |
80626a55 | 966 | |
73869dc2 DE |
967 | /* Table to map ELF section numbers to their sections. |
968 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
969 | unsigned int num_sections; |
970 | asection **elf_sections; | |
971 | }; | |
972 | ||
36586728 TT |
973 | /* This represents a '.dwz' file. */ |
974 | ||
975 | struct dwz_file | |
976 | { | |
977 | /* A dwz file can only contain a few sections. */ | |
978 | struct dwarf2_section_info abbrev; | |
979 | struct dwarf2_section_info info; | |
980 | struct dwarf2_section_info str; | |
981 | struct dwarf2_section_info line; | |
982 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 983 | struct dwarf2_section_info gdb_index; |
36586728 TT |
984 | |
985 | /* The dwz's BFD. */ | |
986 | bfd *dwz_bfd; | |
987 | }; | |
988 | ||
0963b4bd MS |
989 | /* Struct used to pass misc. parameters to read_die_and_children, et |
990 | al. which are used for both .debug_info and .debug_types dies. | |
991 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 992 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
993 | |
994 | struct die_reader_specs | |
995 | { | |
a32a8923 | 996 | /* The bfd of die_section. */ |
93311388 DE |
997 | bfd* abfd; |
998 | ||
999 | /* The CU of the DIE we are parsing. */ | |
1000 | struct dwarf2_cu *cu; | |
1001 | ||
80626a55 | 1002 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1003 | struct dwo_file *dwo_file; |
1004 | ||
dee91e82 | 1005 | /* The section the die comes from. |
3019eac3 | 1006 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1007 | struct dwarf2_section_info *die_section; |
1008 | ||
1009 | /* die_section->buffer. */ | |
d521ce57 | 1010 | const gdb_byte *buffer; |
f664829e DE |
1011 | |
1012 | /* The end of the buffer. */ | |
1013 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1014 | |
1015 | /* The value of the DW_AT_comp_dir attribute. */ | |
1016 | const char *comp_dir; | |
93311388 DE |
1017 | }; |
1018 | ||
fd820528 | 1019 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1020 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1021 | const gdb_byte *info_ptr, |
dee91e82 DE |
1022 | struct die_info *comp_unit_die, |
1023 | int has_children, | |
1024 | void *data); | |
1025 | ||
debd256d JB |
1026 | /* The line number information for a compilation unit (found in the |
1027 | .debug_line section) begins with a "statement program header", | |
1028 | which contains the following information. */ | |
1029 | struct line_header | |
1030 | { | |
1031 | unsigned int total_length; | |
1032 | unsigned short version; | |
1033 | unsigned int header_length; | |
1034 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1035 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1036 | unsigned char default_is_stmt; |
1037 | int line_base; | |
1038 | unsigned char line_range; | |
1039 | unsigned char opcode_base; | |
1040 | ||
1041 | /* standard_opcode_lengths[i] is the number of operands for the | |
1042 | standard opcode whose value is i. This means that | |
1043 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1044 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1045 | unsigned char *standard_opcode_lengths; | |
1046 | ||
1047 | /* The include_directories table. NOTE! These strings are not | |
1048 | allocated with xmalloc; instead, they are pointers into | |
1049 | debug_line_buffer. If you try to free them, `free' will get | |
1050 | indigestion. */ | |
1051 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1052 | const char **include_dirs; |
debd256d JB |
1053 | |
1054 | /* The file_names table. NOTE! These strings are not allocated | |
1055 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1056 | Don't try to free them directly. */ | |
1057 | unsigned int num_file_names, file_names_size; | |
1058 | struct file_entry | |
c906108c | 1059 | { |
d521ce57 | 1060 | const char *name; |
debd256d JB |
1061 | unsigned int dir_index; |
1062 | unsigned int mod_time; | |
1063 | unsigned int length; | |
aaa75496 | 1064 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 1065 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
1066 | } *file_names; |
1067 | ||
1068 | /* The start and end of the statement program following this | |
6502dd73 | 1069 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1070 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1071 | }; |
c906108c SS |
1072 | |
1073 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1074 | need this much information. */ |
c906108c SS |
1075 | struct partial_die_info |
1076 | { | |
72bf9492 | 1077 | /* Offset of this DIE. */ |
b64f50a1 | 1078 | sect_offset offset; |
72bf9492 DJ |
1079 | |
1080 | /* DWARF-2 tag for this DIE. */ | |
1081 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1082 | ||
72bf9492 DJ |
1083 | /* Assorted flags describing the data found in this DIE. */ |
1084 | unsigned int has_children : 1; | |
1085 | unsigned int is_external : 1; | |
1086 | unsigned int is_declaration : 1; | |
1087 | unsigned int has_type : 1; | |
1088 | unsigned int has_specification : 1; | |
1089 | unsigned int has_pc_info : 1; | |
481860b3 | 1090 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1091 | |
1092 | /* Flag set if the SCOPE field of this structure has been | |
1093 | computed. */ | |
1094 | unsigned int scope_set : 1; | |
1095 | ||
fa4028e9 JB |
1096 | /* Flag set if the DIE has a byte_size attribute. */ |
1097 | unsigned int has_byte_size : 1; | |
1098 | ||
98bfdba5 PA |
1099 | /* Flag set if any of the DIE's children are template arguments. */ |
1100 | unsigned int has_template_arguments : 1; | |
1101 | ||
abc72ce4 DE |
1102 | /* Flag set if fixup_partial_die has been called on this die. */ |
1103 | unsigned int fixup_called : 1; | |
1104 | ||
36586728 TT |
1105 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1106 | unsigned int is_dwz : 1; | |
1107 | ||
1108 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1109 | unsigned int spec_is_dwz : 1; | |
1110 | ||
72bf9492 | 1111 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1112 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1113 | const char *name; |
72bf9492 | 1114 | |
abc72ce4 DE |
1115 | /* The linkage name, if present. */ |
1116 | const char *linkage_name; | |
1117 | ||
72bf9492 DJ |
1118 | /* The scope to prepend to our children. This is generally |
1119 | allocated on the comp_unit_obstack, so will disappear | |
1120 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1121 | const char *scope; |
72bf9492 | 1122 | |
95554aad TT |
1123 | /* Some data associated with the partial DIE. The tag determines |
1124 | which field is live. */ | |
1125 | union | |
1126 | { | |
1127 | /* The location description associated with this DIE, if any. */ | |
1128 | struct dwarf_block *locdesc; | |
1129 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1130 | sect_offset offset; | |
1131 | } d; | |
72bf9492 DJ |
1132 | |
1133 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1134 | CORE_ADDR lowpc; |
1135 | CORE_ADDR highpc; | |
72bf9492 | 1136 | |
93311388 | 1137 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1138 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1139 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1140 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1141 | const gdb_byte *sibling; |
72bf9492 DJ |
1142 | |
1143 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1144 | DW_AT_specification (or DW_AT_abstract_origin or | |
1145 | DW_AT_extension). */ | |
b64f50a1 | 1146 | sect_offset spec_offset; |
72bf9492 DJ |
1147 | |
1148 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1149 | if any. */ | |
1150 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1151 | }; |
1152 | ||
0963b4bd | 1153 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1154 | struct abbrev_info |
1155 | { | |
1156 | unsigned int number; /* number identifying abbrev */ | |
1157 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1158 | unsigned short has_children; /* boolean */ |
1159 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1160 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1161 | struct abbrev_info *next; /* next in chain */ | |
1162 | }; | |
1163 | ||
1164 | struct attr_abbrev | |
1165 | { | |
9d25dd43 DE |
1166 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1167 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1168 | }; |
1169 | ||
433df2d4 DE |
1170 | /* Size of abbrev_table.abbrev_hash_table. */ |
1171 | #define ABBREV_HASH_SIZE 121 | |
1172 | ||
1173 | /* Top level data structure to contain an abbreviation table. */ | |
1174 | ||
1175 | struct abbrev_table | |
1176 | { | |
f4dc4d17 DE |
1177 | /* Where the abbrev table came from. |
1178 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1179 | sect_offset offset; |
1180 | ||
1181 | /* Storage for the abbrev table. */ | |
1182 | struct obstack abbrev_obstack; | |
1183 | ||
1184 | /* Hash table of abbrevs. | |
1185 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1186 | It could be statically allocated, but the previous code didn't so we | |
1187 | don't either. */ | |
1188 | struct abbrev_info **abbrevs; | |
1189 | }; | |
1190 | ||
0963b4bd | 1191 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1192 | struct attribute |
1193 | { | |
9d25dd43 | 1194 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1195 | ENUM_BITFIELD(dwarf_form) form : 15; |
1196 | ||
1197 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1198 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1199 | here for better struct attribute alignment. */ | |
1200 | unsigned int string_is_canonical : 1; | |
1201 | ||
b60c80d6 DJ |
1202 | union |
1203 | { | |
15d034d0 | 1204 | const char *str; |
b60c80d6 | 1205 | struct dwarf_block *blk; |
43bbcdc2 PH |
1206 | ULONGEST unsnd; |
1207 | LONGEST snd; | |
b60c80d6 | 1208 | CORE_ADDR addr; |
ac9ec31b | 1209 | ULONGEST signature; |
b60c80d6 DJ |
1210 | } |
1211 | u; | |
1212 | }; | |
1213 | ||
0963b4bd | 1214 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1215 | struct die_info |
1216 | { | |
76815b17 DE |
1217 | /* DWARF-2 tag for this DIE. */ |
1218 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1219 | ||
1220 | /* Number of attributes */ | |
98bfdba5 PA |
1221 | unsigned char num_attrs; |
1222 | ||
1223 | /* True if we're presently building the full type name for the | |
1224 | type derived from this DIE. */ | |
1225 | unsigned char building_fullname : 1; | |
76815b17 DE |
1226 | |
1227 | /* Abbrev number */ | |
1228 | unsigned int abbrev; | |
1229 | ||
93311388 | 1230 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1231 | sect_offset offset; |
78ba4af6 JB |
1232 | |
1233 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1234 | points to this die's parent; CHILD points to the first child of | |
1235 | this node; and all the children of a given node are chained | |
4950bc1c | 1236 | together via their SIBLING fields. */ |
639d11d3 DC |
1237 | struct die_info *child; /* Its first child, if any. */ |
1238 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1239 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1240 | |
b60c80d6 DJ |
1241 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1242 | zero, but it's not common and zero-sized arrays are not | |
1243 | sufficiently portable C. */ | |
1244 | struct attribute attrs[1]; | |
c906108c SS |
1245 | }; |
1246 | ||
0963b4bd | 1247 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1248 | |
1249 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1250 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1251 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1252 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1253 | #define DW_SND(attr) ((attr)->u.snd) | |
1254 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1255 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1256 | |
0963b4bd | 1257 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1258 | struct dwarf_block |
1259 | { | |
56eb65bd | 1260 | size_t size; |
1d6edc3c JK |
1261 | |
1262 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1263 | const gdb_byte *data; |
c906108c SS |
1264 | }; |
1265 | ||
c906108c SS |
1266 | #ifndef ATTR_ALLOC_CHUNK |
1267 | #define ATTR_ALLOC_CHUNK 4 | |
1268 | #endif | |
1269 | ||
c906108c SS |
1270 | /* Allocate fields for structs, unions and enums in this size. */ |
1271 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1272 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1273 | #endif | |
1274 | ||
c906108c SS |
1275 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1276 | but this would require a corresponding change in unpack_field_as_long | |
1277 | and friends. */ | |
1278 | static int bits_per_byte = 8; | |
1279 | ||
1280 | /* The routines that read and process dies for a C struct or C++ class | |
1281 | pass lists of data member fields and lists of member function fields | |
1282 | in an instance of a field_info structure, as defined below. */ | |
1283 | struct field_info | |
c5aa993b | 1284 | { |
0963b4bd | 1285 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1286 | struct nextfield |
1287 | { | |
1288 | struct nextfield *next; | |
1289 | int accessibility; | |
1290 | int virtuality; | |
1291 | struct field field; | |
1292 | } | |
7d0ccb61 | 1293 | *fields, *baseclasses; |
c906108c | 1294 | |
7d0ccb61 | 1295 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1296 | int nfields; |
c906108c | 1297 | |
c5aa993b JM |
1298 | /* Number of baseclasses. */ |
1299 | int nbaseclasses; | |
c906108c | 1300 | |
c5aa993b JM |
1301 | /* Set if the accesibility of one of the fields is not public. */ |
1302 | int non_public_fields; | |
c906108c | 1303 | |
c5aa993b JM |
1304 | /* Member function fields array, entries are allocated in the order they |
1305 | are encountered in the object file. */ | |
1306 | struct nextfnfield | |
1307 | { | |
1308 | struct nextfnfield *next; | |
1309 | struct fn_field fnfield; | |
1310 | } | |
1311 | *fnfields; | |
c906108c | 1312 | |
c5aa993b JM |
1313 | /* Member function fieldlist array, contains name of possibly overloaded |
1314 | member function, number of overloaded member functions and a pointer | |
1315 | to the head of the member function field chain. */ | |
1316 | struct fnfieldlist | |
1317 | { | |
15d034d0 | 1318 | const char *name; |
c5aa993b JM |
1319 | int length; |
1320 | struct nextfnfield *head; | |
1321 | } | |
1322 | *fnfieldlists; | |
c906108c | 1323 | |
c5aa993b JM |
1324 | /* Number of entries in the fnfieldlists array. */ |
1325 | int nfnfields; | |
98751a41 JK |
1326 | |
1327 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1328 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1329 | struct typedef_field_list | |
1330 | { | |
1331 | struct typedef_field field; | |
1332 | struct typedef_field_list *next; | |
1333 | } | |
1334 | *typedef_field_list; | |
1335 | unsigned typedef_field_list_count; | |
c5aa993b | 1336 | }; |
c906108c | 1337 | |
10b3939b DJ |
1338 | /* One item on the queue of compilation units to read in full symbols |
1339 | for. */ | |
1340 | struct dwarf2_queue_item | |
1341 | { | |
1342 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1343 | enum language pretend_language; |
10b3939b DJ |
1344 | struct dwarf2_queue_item *next; |
1345 | }; | |
1346 | ||
1347 | /* The current queue. */ | |
1348 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1349 | ||
ae038cb0 DJ |
1350 | /* Loaded secondary compilation units are kept in memory until they |
1351 | have not been referenced for the processing of this many | |
1352 | compilation units. Set this to zero to disable caching. Cache | |
1353 | sizes of up to at least twenty will improve startup time for | |
1354 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1355 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1356 | static void |
1357 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1358 | struct cmd_list_element *c, const char *value) | |
1359 | { | |
3e43a32a MS |
1360 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1361 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1362 | value); |
1363 | } | |
4390d890 | 1364 | \f |
c906108c SS |
1365 | /* local function prototypes */ |
1366 | ||
a32a8923 DE |
1367 | static const char *get_section_name (const struct dwarf2_section_info *); |
1368 | ||
1369 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1370 | ||
4efb68b1 | 1371 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1372 | |
918dd910 JK |
1373 | static void dwarf2_find_base_address (struct die_info *die, |
1374 | struct dwarf2_cu *cu); | |
1375 | ||
0018ea6f DE |
1376 | static struct partial_symtab *create_partial_symtab |
1377 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1378 | ||
c67a9c90 | 1379 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1380 | |
72bf9492 DJ |
1381 | static void scan_partial_symbols (struct partial_die_info *, |
1382 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1383 | int, struct dwarf2_cu *); |
c906108c | 1384 | |
72bf9492 DJ |
1385 | static void add_partial_symbol (struct partial_die_info *, |
1386 | struct dwarf2_cu *); | |
63d06c5c | 1387 | |
72bf9492 DJ |
1388 | static void add_partial_namespace (struct partial_die_info *pdi, |
1389 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1390 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1391 | |
5d7cb8df JK |
1392 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1393 | CORE_ADDR *highpc, int need_pc, | |
1394 | struct dwarf2_cu *cu); | |
1395 | ||
72bf9492 DJ |
1396 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1397 | struct dwarf2_cu *cu); | |
91c24f0a | 1398 | |
bc30ff58 JB |
1399 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1400 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1401 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1402 | |
257e7a09 YQ |
1403 | static void dwarf2_read_symtab (struct partial_symtab *, |
1404 | struct objfile *); | |
c906108c | 1405 | |
a14ed312 | 1406 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1407 | |
433df2d4 DE |
1408 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1409 | (const struct abbrev_table *, unsigned int); | |
1410 | ||
1411 | static struct abbrev_table *abbrev_table_read_table | |
1412 | (struct dwarf2_section_info *, sect_offset); | |
1413 | ||
1414 | static void abbrev_table_free (struct abbrev_table *); | |
1415 | ||
f4dc4d17 DE |
1416 | static void abbrev_table_free_cleanup (void *); |
1417 | ||
dee91e82 DE |
1418 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1419 | struct dwarf2_section_info *); | |
c906108c | 1420 | |
f3dd6933 | 1421 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1422 | |
d521ce57 | 1423 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1424 | |
dee91e82 | 1425 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1426 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1427 | |
d521ce57 TT |
1428 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1429 | struct partial_die_info *, | |
1430 | struct abbrev_info *, | |
1431 | unsigned int, | |
1432 | const gdb_byte *); | |
c906108c | 1433 | |
36586728 | 1434 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1435 | struct dwarf2_cu *); |
72bf9492 DJ |
1436 | |
1437 | static void fixup_partial_die (struct partial_die_info *, | |
1438 | struct dwarf2_cu *); | |
1439 | ||
d521ce57 TT |
1440 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1441 | struct attribute *, struct attr_abbrev *, | |
1442 | const gdb_byte *); | |
a8329558 | 1443 | |
a1855c1d | 1444 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1445 | |
a1855c1d | 1446 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1447 | |
a1855c1d | 1448 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1449 | |
a1855c1d | 1450 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1451 | |
a1855c1d | 1452 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1453 | |
d521ce57 | 1454 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1455 | unsigned int *); |
c906108c | 1456 | |
d521ce57 | 1457 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1458 | |
1459 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1460 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1461 | unsigned int *, unsigned int *); |
613e1657 | 1462 | |
d521ce57 TT |
1463 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1464 | const struct comp_unit_head *, | |
c764a876 DE |
1465 | unsigned int *); |
1466 | ||
d521ce57 | 1467 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1468 | |
f4dc4d17 DE |
1469 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1470 | sect_offset); | |
1471 | ||
d521ce57 | 1472 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1473 | |
d521ce57 | 1474 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1475 | |
d521ce57 TT |
1476 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1477 | const struct comp_unit_head *, | |
1478 | unsigned int *); | |
4bdf3d34 | 1479 | |
d521ce57 | 1480 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1481 | |
d521ce57 | 1482 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1483 | |
d521ce57 | 1484 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1485 | |
d521ce57 TT |
1486 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1487 | const gdb_byte *, | |
3019eac3 DE |
1488 | unsigned int *); |
1489 | ||
d521ce57 TT |
1490 | static const char *read_str_index (const struct die_reader_specs *reader, |
1491 | struct dwarf2_cu *cu, ULONGEST str_index); | |
3019eac3 | 1492 | |
e142c38c | 1493 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1494 | |
e142c38c DJ |
1495 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1496 | struct dwarf2_cu *); | |
c906108c | 1497 | |
348e048f | 1498 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1499 | unsigned int); |
348e048f | 1500 | |
05cf31d1 JB |
1501 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1502 | struct dwarf2_cu *cu); | |
1503 | ||
e142c38c | 1504 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1505 | |
e142c38c | 1506 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1507 | struct dwarf2_cu **); |
63d06c5c | 1508 | |
debd256d JB |
1509 | static void free_line_header (struct line_header *lh); |
1510 | ||
3019eac3 DE |
1511 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1512 | struct dwarf2_cu *cu); | |
debd256d | 1513 | |
f3f5162e DE |
1514 | static void dwarf_decode_lines (struct line_header *, const char *, |
1515 | struct dwarf2_cu *, struct partial_symtab *, | |
1516 | int); | |
c906108c | 1517 | |
d521ce57 | 1518 | static void dwarf2_start_subfile (const char *, const char *, const char *); |
c906108c | 1519 | |
f4dc4d17 | 1520 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1521 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1522 | |
a14ed312 | 1523 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1524 | struct dwarf2_cu *); |
c906108c | 1525 | |
34eaf542 TT |
1526 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1527 | struct dwarf2_cu *, struct symbol *); | |
1528 | ||
ff39bb5e | 1529 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1530 | struct dwarf2_cu *); |
c906108c | 1531 | |
ff39bb5e | 1532 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1533 | struct type *type, |
1534 | const char *name, | |
1535 | struct obstack *obstack, | |
12df843f | 1536 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1537 | const gdb_byte **bytes, |
98bfdba5 | 1538 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1539 | |
e7c27a73 | 1540 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1541 | |
b4ba55a1 JB |
1542 | static int need_gnat_info (struct dwarf2_cu *); |
1543 | ||
3e43a32a MS |
1544 | static struct type *die_descriptive_type (struct die_info *, |
1545 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1546 | |
1547 | static void set_descriptive_type (struct type *, struct die_info *, | |
1548 | struct dwarf2_cu *); | |
1549 | ||
e7c27a73 DJ |
1550 | static struct type *die_containing_type (struct die_info *, |
1551 | struct dwarf2_cu *); | |
c906108c | 1552 | |
ff39bb5e | 1553 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1554 | struct dwarf2_cu *); |
c906108c | 1555 | |
f792889a | 1556 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1557 | |
673bfd45 DE |
1558 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1559 | ||
0d5cff50 | 1560 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1561 | |
6e70227d | 1562 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1563 | const char *suffix, int physname, |
1564 | struct dwarf2_cu *cu); | |
63d06c5c | 1565 | |
e7c27a73 | 1566 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1567 | |
348e048f DE |
1568 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1569 | ||
e7c27a73 | 1570 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1571 | |
e7c27a73 | 1572 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1573 | |
96408a79 SA |
1574 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1575 | ||
ff013f42 JK |
1576 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1577 | struct dwarf2_cu *, struct partial_symtab *); | |
1578 | ||
a14ed312 | 1579 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1580 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1581 | struct partial_symtab *); | |
c906108c | 1582 | |
fae299cd DC |
1583 | static void get_scope_pc_bounds (struct die_info *, |
1584 | CORE_ADDR *, CORE_ADDR *, | |
1585 | struct dwarf2_cu *); | |
1586 | ||
801e3a5b JB |
1587 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1588 | CORE_ADDR, struct dwarf2_cu *); | |
1589 | ||
a14ed312 | 1590 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1591 | struct dwarf2_cu *); |
c906108c | 1592 | |
a14ed312 | 1593 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1594 | struct type *, struct dwarf2_cu *); |
c906108c | 1595 | |
a14ed312 | 1596 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1597 | struct die_info *, struct type *, |
e7c27a73 | 1598 | struct dwarf2_cu *); |
c906108c | 1599 | |
a14ed312 | 1600 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1601 | struct type *, |
1602 | struct dwarf2_cu *); | |
c906108c | 1603 | |
134d01f1 | 1604 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1605 | |
e7c27a73 | 1606 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1607 | |
e7c27a73 | 1608 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1609 | |
5d7cb8df JK |
1610 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1611 | ||
27aa8d6a SW |
1612 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1613 | ||
f55ee35c JK |
1614 | static struct type *read_module_type (struct die_info *die, |
1615 | struct dwarf2_cu *cu); | |
1616 | ||
38d518c9 | 1617 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1618 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1619 | |
134d01f1 | 1620 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1621 | |
e7c27a73 | 1622 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1623 | |
6e70227d | 1624 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1625 | struct dwarf2_cu *); |
1626 | ||
bf6af496 | 1627 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1628 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1629 | struct die_info *); |
639d11d3 | 1630 | |
dee91e82 | 1631 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1632 | const gdb_byte *info_ptr, |
1633 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1634 | struct die_info *parent); |
1635 | ||
d521ce57 TT |
1636 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1637 | struct die_info **, const gdb_byte *, | |
1638 | int *, int); | |
3019eac3 | 1639 | |
d521ce57 TT |
1640 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1641 | struct die_info **, const gdb_byte *, | |
1642 | int *); | |
93311388 | 1643 | |
e7c27a73 | 1644 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1645 | |
15d034d0 TT |
1646 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1647 | struct obstack *); | |
71c25dea | 1648 | |
15d034d0 | 1649 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1650 | |
15d034d0 | 1651 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1652 | struct die_info *die, |
1653 | struct dwarf2_cu *cu); | |
1654 | ||
ca69b9e6 DE |
1655 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1656 | struct dwarf2_cu *cu); | |
1657 | ||
e142c38c | 1658 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1659 | struct dwarf2_cu **); |
9219021c | 1660 | |
f39c6ffd | 1661 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1662 | |
f39c6ffd | 1663 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1664 | |
f39c6ffd | 1665 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1666 | |
a14ed312 | 1667 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1668 | |
f39c6ffd | 1669 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1670 | |
f9aca02d | 1671 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1672 | |
d97bc12b DE |
1673 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1674 | ||
1675 | static void dump_die_for_error (struct die_info *); | |
1676 | ||
1677 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1678 | struct die_info *); | |
c906108c | 1679 | |
d97bc12b | 1680 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1681 | |
51545339 | 1682 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1683 | struct dwarf2_cu *); |
c906108c | 1684 | |
ff39bb5e | 1685 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1686 | |
ff39bb5e | 1687 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1688 | |
348e048f | 1689 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1690 | const struct attribute *, |
348e048f DE |
1691 | struct dwarf2_cu **); |
1692 | ||
10b3939b | 1693 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1694 | const struct attribute *, |
f2f0e013 | 1695 | struct dwarf2_cu **); |
c906108c | 1696 | |
348e048f | 1697 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1698 | const struct attribute *, |
348e048f DE |
1699 | struct dwarf2_cu **); |
1700 | ||
ac9ec31b DE |
1701 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1702 | struct dwarf2_cu *); | |
1703 | ||
1704 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1705 | const struct attribute *, |
ac9ec31b DE |
1706 | struct dwarf2_cu *); |
1707 | ||
e5fe5e75 | 1708 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1709 | |
52dc124a | 1710 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1711 | |
f4dc4d17 | 1712 | static struct type_unit_group *get_type_unit_group |
ff39bb5e | 1713 | (struct dwarf2_cu *, const struct attribute *); |
f4dc4d17 DE |
1714 | |
1715 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1716 | ||
c906108c SS |
1717 | /* memory allocation interface */ |
1718 | ||
7b5a2f43 | 1719 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1720 | |
b60c80d6 | 1721 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1722 | |
09262596 | 1723 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1724 | const char *, int); |
2e276125 | 1725 | |
6e5a29e1 | 1726 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1727 | |
6e5a29e1 | 1728 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1729 | |
6e5a29e1 | 1730 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1731 | |
6e5a29e1 | 1732 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1733 | |
8cf6f0b1 TT |
1734 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1735 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1736 | const struct attribute *attr); |
8cf6f0b1 | 1737 | |
ff39bb5e | 1738 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1739 | struct symbol *sym, |
f1e6e072 TT |
1740 | struct dwarf2_cu *cu, |
1741 | int is_block); | |
4c2df51b | 1742 | |
d521ce57 TT |
1743 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1744 | const gdb_byte *info_ptr, | |
1745 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1746 | |
72bf9492 DJ |
1747 | static void free_stack_comp_unit (void *); |
1748 | ||
72bf9492 DJ |
1749 | static hashval_t partial_die_hash (const void *item); |
1750 | ||
1751 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1752 | ||
ae038cb0 | 1753 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1754 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1755 | |
9816fde3 | 1756 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1757 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1758 | |
1759 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1760 | struct die_info *comp_unit_die, |
1761 | enum language pretend_language); | |
93311388 | 1762 | |
68dc6402 | 1763 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1764 | |
1765 | static void free_cached_comp_units (void *); | |
1766 | ||
1767 | static void age_cached_comp_units (void); | |
1768 | ||
dee91e82 | 1769 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1770 | |
f792889a DJ |
1771 | static struct type *set_die_type (struct die_info *, struct type *, |
1772 | struct dwarf2_cu *); | |
1c379e20 | 1773 | |
ae038cb0 DJ |
1774 | static void create_all_comp_units (struct objfile *); |
1775 | ||
0e50663e | 1776 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1777 | |
95554aad TT |
1778 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1779 | enum language); | |
10b3939b | 1780 | |
95554aad TT |
1781 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1782 | enum language); | |
10b3939b | 1783 | |
f4dc4d17 DE |
1784 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1785 | enum language); | |
1786 | ||
10b3939b DJ |
1787 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1788 | struct dwarf2_per_cu_data *); | |
1789 | ||
ae038cb0 DJ |
1790 | static void dwarf2_mark (struct dwarf2_cu *); |
1791 | ||
1792 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1793 | ||
b64f50a1 | 1794 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1795 | struct dwarf2_per_cu_data *); |
673bfd45 | 1796 | |
f792889a | 1797 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1798 | |
9291a0cd TT |
1799 | static void dwarf2_release_queue (void *dummy); |
1800 | ||
95554aad TT |
1801 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1802 | enum language pretend_language); | |
1803 | ||
a0f42c21 | 1804 | static void process_queue (void); |
9291a0cd TT |
1805 | |
1806 | static void find_file_and_directory (struct die_info *die, | |
1807 | struct dwarf2_cu *cu, | |
15d034d0 | 1808 | const char **name, const char **comp_dir); |
9291a0cd TT |
1809 | |
1810 | static char *file_full_name (int file, struct line_header *lh, | |
1811 | const char *comp_dir); | |
1812 | ||
d521ce57 | 1813 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1814 | (struct comp_unit_head *header, |
1815 | struct dwarf2_section_info *section, | |
d521ce57 | 1816 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1817 | int is_debug_types_section); |
1818 | ||
fd820528 | 1819 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1820 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1821 | int use_existing_cu, int keep, | |
3019eac3 DE |
1822 | die_reader_func_ftype *die_reader_func, void *data); |
1823 | ||
dee91e82 DE |
1824 | static void init_cutu_and_read_dies_simple |
1825 | (struct dwarf2_per_cu_data *this_cu, | |
1826 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1827 | |
673bfd45 | 1828 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1829 | |
3019eac3 DE |
1830 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1831 | ||
57d63ce2 DE |
1832 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1833 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1834 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1835 | |
1836 | static struct dwp_file *get_dwp_file (void); | |
1837 | ||
3019eac3 | 1838 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1839 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1840 | |
1841 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1842 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1843 | |
89e63ee4 DE |
1844 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1845 | ||
3019eac3 DE |
1846 | static void free_dwo_file_cleanup (void *); |
1847 | ||
95554aad TT |
1848 | static void process_cu_includes (void); |
1849 | ||
1b80a9fa | 1850 | static void check_producer (struct dwarf2_cu *cu); |
4390d890 DE |
1851 | \f |
1852 | /* Various complaints about symbol reading that don't abort the process. */ | |
1853 | ||
1854 | static void | |
1855 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1856 | { | |
1857 | complaint (&symfile_complaints, | |
1858 | _("statement list doesn't fit in .debug_line section")); | |
1859 | } | |
1860 | ||
1861 | static void | |
1862 | dwarf2_debug_line_missing_file_complaint (void) | |
1863 | { | |
1864 | complaint (&symfile_complaints, | |
1865 | _(".debug_line section has line data without a file")); | |
1866 | } | |
1867 | ||
1868 | static void | |
1869 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1870 | { | |
1871 | complaint (&symfile_complaints, | |
1872 | _(".debug_line section has line " | |
1873 | "program sequence without an end")); | |
1874 | } | |
1875 | ||
1876 | static void | |
1877 | dwarf2_complex_location_expr_complaint (void) | |
1878 | { | |
1879 | complaint (&symfile_complaints, _("location expression too complex")); | |
1880 | } | |
1881 | ||
1882 | static void | |
1883 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1884 | int arg3) | |
1885 | { | |
1886 | complaint (&symfile_complaints, | |
1887 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1888 | arg1, arg2, arg3); | |
1889 | } | |
1890 | ||
1891 | static void | |
1892 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1893 | { | |
1894 | complaint (&symfile_complaints, | |
1895 | _("debug info runs off end of %s section" | |
1896 | " [in module %s]"), | |
a32a8923 DE |
1897 | get_section_name (section), |
1898 | get_section_file_name (section)); | |
4390d890 | 1899 | } |
1b80a9fa | 1900 | |
4390d890 DE |
1901 | static void |
1902 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1903 | { | |
1904 | complaint (&symfile_complaints, | |
1905 | _("macro debug info contains a " | |
1906 | "malformed macro definition:\n`%s'"), | |
1907 | arg1); | |
1908 | } | |
1909 | ||
1910 | static void | |
1911 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1912 | { | |
1913 | complaint (&symfile_complaints, | |
1914 | _("invalid attribute class or form for '%s' in '%s'"), | |
1915 | arg1, arg2); | |
1916 | } | |
1917 | \f | |
9291a0cd TT |
1918 | #if WORDS_BIGENDIAN |
1919 | ||
1920 | /* Convert VALUE between big- and little-endian. */ | |
1921 | static offset_type | |
1922 | byte_swap (offset_type value) | |
1923 | { | |
1924 | offset_type result; | |
1925 | ||
1926 | result = (value & 0xff) << 24; | |
1927 | result |= (value & 0xff00) << 8; | |
1928 | result |= (value & 0xff0000) >> 8; | |
1929 | result |= (value & 0xff000000) >> 24; | |
1930 | return result; | |
1931 | } | |
1932 | ||
1933 | #define MAYBE_SWAP(V) byte_swap (V) | |
1934 | ||
1935 | #else | |
1936 | #define MAYBE_SWAP(V) (V) | |
1937 | #endif /* WORDS_BIGENDIAN */ | |
1938 | ||
1939 | /* The suffix for an index file. */ | |
1940 | #define INDEX_SUFFIX ".gdb-index" | |
1941 | ||
c906108c | 1942 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1943 | information and return true if we have enough to do something. |
1944 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1945 | ELF names are used. */ | |
c906108c SS |
1946 | |
1947 | int | |
251d32d9 TG |
1948 | dwarf2_has_info (struct objfile *objfile, |
1949 | const struct dwarf2_debug_sections *names) | |
c906108c | 1950 | { |
be391dca TT |
1951 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1952 | if (!dwarf2_per_objfile) | |
1953 | { | |
1954 | /* Initialize per-objfile state. */ | |
1955 | struct dwarf2_per_objfile *data | |
1956 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1957 | |
be391dca TT |
1958 | memset (data, 0, sizeof (*data)); |
1959 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1960 | dwarf2_per_objfile = data; | |
6502dd73 | 1961 | |
251d32d9 TG |
1962 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1963 | (void *) names); | |
be391dca TT |
1964 | dwarf2_per_objfile->objfile = objfile; |
1965 | } | |
73869dc2 DE |
1966 | return (!dwarf2_per_objfile->info.is_virtual |
1967 | && dwarf2_per_objfile->info.s.asection != NULL | |
1968 | && !dwarf2_per_objfile->abbrev.is_virtual | |
1969 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
1970 | } | |
1971 | ||
1972 | /* Return the containing section of virtual section SECTION. */ | |
1973 | ||
1974 | static struct dwarf2_section_info * | |
1975 | get_containing_section (const struct dwarf2_section_info *section) | |
1976 | { | |
1977 | gdb_assert (section->is_virtual); | |
1978 | return section->s.containing_section; | |
c906108c SS |
1979 | } |
1980 | ||
a32a8923 DE |
1981 | /* Return the bfd owner of SECTION. */ |
1982 | ||
1983 | static struct bfd * | |
1984 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
1985 | { | |
73869dc2 DE |
1986 | if (section->is_virtual) |
1987 | { | |
1988 | section = get_containing_section (section); | |
1989 | gdb_assert (!section->is_virtual); | |
1990 | } | |
1991 | return section->s.asection->owner; | |
a32a8923 DE |
1992 | } |
1993 | ||
1994 | /* Return the bfd section of SECTION. | |
1995 | Returns NULL if the section is not present. */ | |
1996 | ||
1997 | static asection * | |
1998 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
1999 | { | |
73869dc2 DE |
2000 | if (section->is_virtual) |
2001 | { | |
2002 | section = get_containing_section (section); | |
2003 | gdb_assert (!section->is_virtual); | |
2004 | } | |
2005 | return section->s.asection; | |
a32a8923 DE |
2006 | } |
2007 | ||
2008 | /* Return the name of SECTION. */ | |
2009 | ||
2010 | static const char * | |
2011 | get_section_name (const struct dwarf2_section_info *section) | |
2012 | { | |
2013 | asection *sectp = get_section_bfd_section (section); | |
2014 | ||
2015 | gdb_assert (sectp != NULL); | |
2016 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2017 | } | |
2018 | ||
2019 | /* Return the name of the file SECTION is in. */ | |
2020 | ||
2021 | static const char * | |
2022 | get_section_file_name (const struct dwarf2_section_info *section) | |
2023 | { | |
2024 | bfd *abfd = get_section_bfd_owner (section); | |
2025 | ||
2026 | return bfd_get_filename (abfd); | |
2027 | } | |
2028 | ||
2029 | /* Return the id of SECTION. | |
2030 | Returns 0 if SECTION doesn't exist. */ | |
2031 | ||
2032 | static int | |
2033 | get_section_id (const struct dwarf2_section_info *section) | |
2034 | { | |
2035 | asection *sectp = get_section_bfd_section (section); | |
2036 | ||
2037 | if (sectp == NULL) | |
2038 | return 0; | |
2039 | return sectp->id; | |
2040 | } | |
2041 | ||
2042 | /* Return the flags of SECTION. | |
73869dc2 | 2043 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2044 | |
2045 | static int | |
2046 | get_section_flags (const struct dwarf2_section_info *section) | |
2047 | { | |
2048 | asection *sectp = get_section_bfd_section (section); | |
2049 | ||
2050 | gdb_assert (sectp != NULL); | |
2051 | return bfd_get_section_flags (sectp->owner, sectp); | |
2052 | } | |
2053 | ||
251d32d9 TG |
2054 | /* When loading sections, we look either for uncompressed section or for |
2055 | compressed section names. */ | |
233a11ab CS |
2056 | |
2057 | static int | |
251d32d9 TG |
2058 | section_is_p (const char *section_name, |
2059 | const struct dwarf2_section_names *names) | |
233a11ab | 2060 | { |
251d32d9 TG |
2061 | if (names->normal != NULL |
2062 | && strcmp (section_name, names->normal) == 0) | |
2063 | return 1; | |
2064 | if (names->compressed != NULL | |
2065 | && strcmp (section_name, names->compressed) == 0) | |
2066 | return 1; | |
2067 | return 0; | |
233a11ab CS |
2068 | } |
2069 | ||
c906108c SS |
2070 | /* This function is mapped across the sections and remembers the |
2071 | offset and size of each of the debugging sections we are interested | |
2072 | in. */ | |
2073 | ||
2074 | static void | |
251d32d9 | 2075 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2076 | { |
251d32d9 | 2077 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2078 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2079 | |
2080 | if (vnames == NULL) | |
2081 | names = &dwarf2_elf_names; | |
2082 | else | |
2083 | names = (const struct dwarf2_debug_sections *) vnames; | |
2084 | ||
dc7650b8 JK |
2085 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2086 | { | |
2087 | } | |
2088 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2089 | { |
73869dc2 | 2090 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2091 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2092 | } |
251d32d9 | 2093 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2094 | { |
73869dc2 | 2095 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2096 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2097 | } |
251d32d9 | 2098 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2099 | { |
73869dc2 | 2100 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2101 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2102 | } |
251d32d9 | 2103 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2104 | { |
73869dc2 | 2105 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2106 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2107 | } |
251d32d9 | 2108 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2109 | { |
73869dc2 | 2110 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2111 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2112 | } |
cf2c3c16 TT |
2113 | else if (section_is_p (sectp->name, &names->macro)) |
2114 | { | |
73869dc2 | 2115 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2116 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2117 | } | |
251d32d9 | 2118 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2119 | { |
73869dc2 | 2120 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2121 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2122 | } |
3019eac3 DE |
2123 | else if (section_is_p (sectp->name, &names->addr)) |
2124 | { | |
73869dc2 | 2125 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2126 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2127 | } | |
251d32d9 | 2128 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2129 | { |
73869dc2 | 2130 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2131 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2132 | } |
251d32d9 | 2133 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2134 | { |
73869dc2 | 2135 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2136 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2137 | } |
251d32d9 | 2138 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2139 | { |
73869dc2 | 2140 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2141 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2142 | } |
251d32d9 | 2143 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2144 | { |
8b70b953 TT |
2145 | struct dwarf2_section_info type_section; |
2146 | ||
2147 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2148 | type_section.s.asection = sectp; |
8b70b953 TT |
2149 | type_section.size = bfd_get_section_size (sectp); |
2150 | ||
2151 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2152 | &type_section); | |
348e048f | 2153 | } |
251d32d9 | 2154 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2155 | { |
73869dc2 | 2156 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2157 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2158 | } | |
dce234bc | 2159 | |
72dca2f5 FR |
2160 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
2161 | && bfd_section_vma (abfd, sectp) == 0) | |
2162 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2163 | } |
2164 | ||
fceca515 DE |
2165 | /* A helper function that decides whether a section is empty, |
2166 | or not present. */ | |
9e0ac564 TT |
2167 | |
2168 | static int | |
19ac8c2e | 2169 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2170 | { |
73869dc2 DE |
2171 | if (section->is_virtual) |
2172 | return section->size == 0; | |
2173 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2174 | } |
2175 | ||
3019eac3 DE |
2176 | /* Read the contents of the section INFO. |
2177 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2178 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2179 | of the DWO file. | |
dce234bc | 2180 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2181 | |
dce234bc PP |
2182 | static void |
2183 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2184 | { |
a32a8923 | 2185 | asection *sectp; |
3019eac3 | 2186 | bfd *abfd; |
dce234bc | 2187 | gdb_byte *buf, *retbuf; |
c906108c | 2188 | |
be391dca TT |
2189 | if (info->readin) |
2190 | return; | |
dce234bc | 2191 | info->buffer = NULL; |
be391dca | 2192 | info->readin = 1; |
188dd5d6 | 2193 | |
9e0ac564 | 2194 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2195 | return; |
c906108c | 2196 | |
a32a8923 | 2197 | sectp = get_section_bfd_section (info); |
3019eac3 | 2198 | |
73869dc2 DE |
2199 | /* If this is a virtual section we need to read in the real one first. */ |
2200 | if (info->is_virtual) | |
2201 | { | |
2202 | struct dwarf2_section_info *containing_section = | |
2203 | get_containing_section (info); | |
2204 | ||
2205 | gdb_assert (sectp != NULL); | |
2206 | if ((sectp->flags & SEC_RELOC) != 0) | |
2207 | { | |
2208 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2209 | " supported in section %s [in module %s]"), | |
2210 | get_section_name (info), get_section_file_name (info)); | |
2211 | } | |
2212 | dwarf2_read_section (objfile, containing_section); | |
2213 | /* Other code should have already caught virtual sections that don't | |
2214 | fit. */ | |
2215 | gdb_assert (info->virtual_offset + info->size | |
2216 | <= containing_section->size); | |
2217 | /* If the real section is empty or there was a problem reading the | |
2218 | section we shouldn't get here. */ | |
2219 | gdb_assert (containing_section->buffer != NULL); | |
2220 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2221 | return; | |
2222 | } | |
2223 | ||
4bf44c1c TT |
2224 | /* If the section has relocations, we must read it ourselves. |
2225 | Otherwise we attach it to the BFD. */ | |
2226 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2227 | { |
d521ce57 | 2228 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2229 | return; |
dce234bc | 2230 | } |
dce234bc | 2231 | |
4bf44c1c TT |
2232 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2233 | info->buffer = buf; | |
dce234bc PP |
2234 | |
2235 | /* When debugging .o files, we may need to apply relocations; see | |
2236 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2237 | We never compress sections in .o files, so we only need to | |
2238 | try this when the section is not compressed. */ | |
ac8035ab | 2239 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2240 | if (retbuf != NULL) |
2241 | { | |
2242 | info->buffer = retbuf; | |
2243 | return; | |
2244 | } | |
2245 | ||
a32a8923 DE |
2246 | abfd = get_section_bfd_owner (info); |
2247 | gdb_assert (abfd != NULL); | |
2248 | ||
dce234bc PP |
2249 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2250 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2251 | { |
2252 | error (_("Dwarf Error: Can't read DWARF data" | |
2253 | " in section %s [in module %s]"), | |
2254 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2255 | } | |
dce234bc PP |
2256 | } |
2257 | ||
9e0ac564 TT |
2258 | /* A helper function that returns the size of a section in a safe way. |
2259 | If you are positive that the section has been read before using the | |
2260 | size, then it is safe to refer to the dwarf2_section_info object's | |
2261 | "size" field directly. In other cases, you must call this | |
2262 | function, because for compressed sections the size field is not set | |
2263 | correctly until the section has been read. */ | |
2264 | ||
2265 | static bfd_size_type | |
2266 | dwarf2_section_size (struct objfile *objfile, | |
2267 | struct dwarf2_section_info *info) | |
2268 | { | |
2269 | if (!info->readin) | |
2270 | dwarf2_read_section (objfile, info); | |
2271 | return info->size; | |
2272 | } | |
2273 | ||
dce234bc | 2274 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2275 | SECTION_NAME. */ |
af34e669 | 2276 | |
dce234bc | 2277 | void |
3017a003 TG |
2278 | dwarf2_get_section_info (struct objfile *objfile, |
2279 | enum dwarf2_section_enum sect, | |
d521ce57 | 2280 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2281 | bfd_size_type *sizep) |
2282 | { | |
2283 | struct dwarf2_per_objfile *data | |
2284 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2285 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2286 | |
2287 | /* We may see an objfile without any DWARF, in which case we just | |
2288 | return nothing. */ | |
2289 | if (data == NULL) | |
2290 | { | |
2291 | *sectp = NULL; | |
2292 | *bufp = NULL; | |
2293 | *sizep = 0; | |
2294 | return; | |
2295 | } | |
3017a003 TG |
2296 | switch (sect) |
2297 | { | |
2298 | case DWARF2_DEBUG_FRAME: | |
2299 | info = &data->frame; | |
2300 | break; | |
2301 | case DWARF2_EH_FRAME: | |
2302 | info = &data->eh_frame; | |
2303 | break; | |
2304 | default: | |
2305 | gdb_assert_not_reached ("unexpected section"); | |
2306 | } | |
dce234bc | 2307 | |
9e0ac564 | 2308 | dwarf2_read_section (objfile, info); |
dce234bc | 2309 | |
a32a8923 | 2310 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2311 | *bufp = info->buffer; |
2312 | *sizep = info->size; | |
2313 | } | |
2314 | ||
36586728 TT |
2315 | /* A helper function to find the sections for a .dwz file. */ |
2316 | ||
2317 | static void | |
2318 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2319 | { | |
2320 | struct dwz_file *dwz_file = arg; | |
2321 | ||
2322 | /* Note that we only support the standard ELF names, because .dwz | |
2323 | is ELF-only (at the time of writing). */ | |
2324 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2325 | { | |
73869dc2 | 2326 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2327 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2328 | } | |
2329 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2330 | { | |
73869dc2 | 2331 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2332 | dwz_file->info.size = bfd_get_section_size (sectp); |
2333 | } | |
2334 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2335 | { | |
73869dc2 | 2336 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2337 | dwz_file->str.size = bfd_get_section_size (sectp); |
2338 | } | |
2339 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2340 | { | |
73869dc2 | 2341 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2342 | dwz_file->line.size = bfd_get_section_size (sectp); |
2343 | } | |
2344 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2345 | { | |
73869dc2 | 2346 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2347 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2348 | } | |
2ec9a5e0 TT |
2349 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2350 | { | |
73869dc2 | 2351 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2352 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2353 | } | |
36586728 TT |
2354 | } |
2355 | ||
4db1a1dc TT |
2356 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2357 | there is no .gnu_debugaltlink section in the file. Error if there | |
2358 | is such a section but the file cannot be found. */ | |
36586728 TT |
2359 | |
2360 | static struct dwz_file * | |
2361 | dwarf2_get_dwz_file (void) | |
2362 | { | |
4db1a1dc TT |
2363 | bfd *dwz_bfd; |
2364 | char *data; | |
36586728 TT |
2365 | struct cleanup *cleanup; |
2366 | const char *filename; | |
2367 | struct dwz_file *result; | |
dc294be5 TT |
2368 | size_t buildid_len; |
2369 | bfd_byte *buildid; | |
36586728 TT |
2370 | |
2371 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2372 | return dwarf2_per_objfile->dwz_file; | |
2373 | ||
4db1a1dc TT |
2374 | bfd_set_error (bfd_error_no_error); |
2375 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
dc294be5 | 2376 | &buildid_len, &buildid); |
4db1a1dc TT |
2377 | if (data == NULL) |
2378 | { | |
2379 | if (bfd_get_error () == bfd_error_no_error) | |
2380 | return NULL; | |
2381 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2382 | bfd_errmsg (bfd_get_error ())); | |
2383 | } | |
36586728 | 2384 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2385 | make_cleanup (xfree, buildid); |
36586728 | 2386 | |
f9d83a0b | 2387 | filename = (const char *) data; |
36586728 TT |
2388 | if (!IS_ABSOLUTE_PATH (filename)) |
2389 | { | |
4262abfb | 2390 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2391 | char *rel; |
2392 | ||
2393 | make_cleanup (xfree, abs); | |
2394 | abs = ldirname (abs); | |
2395 | make_cleanup (xfree, abs); | |
2396 | ||
2397 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2398 | make_cleanup (xfree, rel); | |
2399 | filename = rel; | |
2400 | } | |
2401 | ||
dc294be5 TT |
2402 | /* First try the file name given in the section. If that doesn't |
2403 | work, try to use the build-id instead. */ | |
36586728 | 2404 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); |
dc294be5 | 2405 | if (dwz_bfd != NULL) |
36586728 | 2406 | { |
dc294be5 TT |
2407 | if (!build_id_verify (dwz_bfd, buildid_len, buildid)) |
2408 | { | |
2409 | gdb_bfd_unref (dwz_bfd); | |
2410 | dwz_bfd = NULL; | |
2411 | } | |
36586728 TT |
2412 | } |
2413 | ||
dc294be5 TT |
2414 | if (dwz_bfd == NULL) |
2415 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2416 | ||
2417 | if (dwz_bfd == NULL) | |
2418 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2419 | objfile_name (dwarf2_per_objfile->objfile)); | |
2420 | ||
36586728 TT |
2421 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2422 | struct dwz_file); | |
2423 | result->dwz_bfd = dwz_bfd; | |
2424 | ||
2425 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2426 | ||
2427 | do_cleanups (cleanup); | |
2428 | ||
8d2cc612 | 2429 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2430 | return result; |
2431 | } | |
9291a0cd | 2432 | \f |
7b9f3c50 DE |
2433 | /* DWARF quick_symbols_functions support. */ |
2434 | ||
2435 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2436 | unique line tables, so we maintain a separate table of all .debug_line | |
2437 | derived entries to support the sharing. | |
2438 | All the quick functions need is the list of file names. We discard the | |
2439 | line_header when we're done and don't need to record it here. */ | |
2440 | struct quick_file_names | |
2441 | { | |
094b34ac DE |
2442 | /* The data used to construct the hash key. */ |
2443 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2444 | |
2445 | /* The number of entries in file_names, real_names. */ | |
2446 | unsigned int num_file_names; | |
2447 | ||
2448 | /* The file names from the line table, after being run through | |
2449 | file_full_name. */ | |
2450 | const char **file_names; | |
2451 | ||
2452 | /* The file names from the line table after being run through | |
2453 | gdb_realpath. These are computed lazily. */ | |
2454 | const char **real_names; | |
2455 | }; | |
2456 | ||
2457 | /* When using the index (and thus not using psymtabs), each CU has an | |
2458 | object of this type. This is used to hold information needed by | |
2459 | the various "quick" methods. */ | |
2460 | struct dwarf2_per_cu_quick_data | |
2461 | { | |
2462 | /* The file table. This can be NULL if there was no file table | |
2463 | or it's currently not read in. | |
2464 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2465 | struct quick_file_names *file_names; | |
2466 | ||
2467 | /* The corresponding symbol table. This is NULL if symbols for this | |
2468 | CU have not yet been read. */ | |
2469 | struct symtab *symtab; | |
2470 | ||
2471 | /* A temporary mark bit used when iterating over all CUs in | |
2472 | expand_symtabs_matching. */ | |
2473 | unsigned int mark : 1; | |
2474 | ||
2475 | /* True if we've tried to read the file table and found there isn't one. | |
2476 | There will be no point in trying to read it again next time. */ | |
2477 | unsigned int no_file_data : 1; | |
2478 | }; | |
2479 | ||
094b34ac DE |
2480 | /* Utility hash function for a stmt_list_hash. */ |
2481 | ||
2482 | static hashval_t | |
2483 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2484 | { | |
2485 | hashval_t v = 0; | |
2486 | ||
2487 | if (stmt_list_hash->dwo_unit != NULL) | |
2488 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2489 | v += stmt_list_hash->line_offset.sect_off; | |
2490 | return v; | |
2491 | } | |
2492 | ||
2493 | /* Utility equality function for a stmt_list_hash. */ | |
2494 | ||
2495 | static int | |
2496 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2497 | const struct stmt_list_hash *rhs) | |
2498 | { | |
2499 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2500 | return 0; | |
2501 | if (lhs->dwo_unit != NULL | |
2502 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2503 | return 0; | |
2504 | ||
2505 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2506 | } | |
2507 | ||
7b9f3c50 DE |
2508 | /* Hash function for a quick_file_names. */ |
2509 | ||
2510 | static hashval_t | |
2511 | hash_file_name_entry (const void *e) | |
2512 | { | |
2513 | const struct quick_file_names *file_data = e; | |
2514 | ||
094b34ac | 2515 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2516 | } |
2517 | ||
2518 | /* Equality function for a quick_file_names. */ | |
2519 | ||
2520 | static int | |
2521 | eq_file_name_entry (const void *a, const void *b) | |
2522 | { | |
2523 | const struct quick_file_names *ea = a; | |
2524 | const struct quick_file_names *eb = b; | |
2525 | ||
094b34ac | 2526 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2527 | } |
2528 | ||
2529 | /* Delete function for a quick_file_names. */ | |
2530 | ||
2531 | static void | |
2532 | delete_file_name_entry (void *e) | |
2533 | { | |
2534 | struct quick_file_names *file_data = e; | |
2535 | int i; | |
2536 | ||
2537 | for (i = 0; i < file_data->num_file_names; ++i) | |
2538 | { | |
2539 | xfree ((void*) file_data->file_names[i]); | |
2540 | if (file_data->real_names) | |
2541 | xfree ((void*) file_data->real_names[i]); | |
2542 | } | |
2543 | ||
2544 | /* The space for the struct itself lives on objfile_obstack, | |
2545 | so we don't free it here. */ | |
2546 | } | |
2547 | ||
2548 | /* Create a quick_file_names hash table. */ | |
2549 | ||
2550 | static htab_t | |
2551 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2552 | { | |
2553 | return htab_create_alloc (nr_initial_entries, | |
2554 | hash_file_name_entry, eq_file_name_entry, | |
2555 | delete_file_name_entry, xcalloc, xfree); | |
2556 | } | |
9291a0cd | 2557 | |
918dd910 JK |
2558 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2559 | have to be created afterwards. You should call age_cached_comp_units after | |
2560 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2561 | ||
2562 | static void | |
2563 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2564 | { | |
3019eac3 | 2565 | if (per_cu->is_debug_types) |
e5fe5e75 | 2566 | load_full_type_unit (per_cu); |
918dd910 | 2567 | else |
95554aad | 2568 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2569 | |
918dd910 | 2570 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2571 | |
2572 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2573 | } |
2574 | ||
a0f42c21 | 2575 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2576 | |
9291a0cd | 2577 | static void |
a0f42c21 | 2578 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2579 | { |
2580 | struct cleanup *back_to; | |
2581 | ||
f4dc4d17 DE |
2582 | /* Skip type_unit_groups, reading the type units they contain |
2583 | is handled elsewhere. */ | |
2584 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2585 | return; | |
2586 | ||
9291a0cd TT |
2587 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2588 | ||
95554aad TT |
2589 | if (dwarf2_per_objfile->using_index |
2590 | ? per_cu->v.quick->symtab == NULL | |
2591 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2592 | { | |
2593 | queue_comp_unit (per_cu, language_minimal); | |
2594 | load_cu (per_cu); | |
89e63ee4 DE |
2595 | |
2596 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2597 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2598 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2599 | if (!per_cu->is_debug_types | |
2600 | && per_cu->cu->dwo_unit != NULL | |
2601 | && dwarf2_per_objfile->index_table != NULL | |
2602 | && dwarf2_per_objfile->index_table->version <= 7 | |
2603 | /* DWP files aren't supported yet. */ | |
2604 | && get_dwp_file () == NULL) | |
2605 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2606 | } |
9291a0cd | 2607 | |
a0f42c21 | 2608 | process_queue (); |
9291a0cd TT |
2609 | |
2610 | /* Age the cache, releasing compilation units that have not | |
2611 | been used recently. */ | |
2612 | age_cached_comp_units (); | |
2613 | ||
2614 | do_cleanups (back_to); | |
2615 | } | |
2616 | ||
2617 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2618 | the objfile from which this CU came. Returns the resulting symbol | |
2619 | table. */ | |
2fdf6df6 | 2620 | |
9291a0cd | 2621 | static struct symtab * |
a0f42c21 | 2622 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2623 | { |
95554aad | 2624 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2625 | if (!per_cu->v.quick->symtab) |
2626 | { | |
2627 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2628 | increment_reading_symtab (); | |
a0f42c21 | 2629 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2630 | process_cu_includes (); |
9291a0cd TT |
2631 | do_cleanups (back_to); |
2632 | } | |
2633 | return per_cu->v.quick->symtab; | |
2634 | } | |
2635 | ||
f4dc4d17 DE |
2636 | /* Return the CU given its index. |
2637 | ||
2638 | This is intended for loops like: | |
2639 | ||
2640 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2641 | + dwarf2_per_objfile->n_type_units); ++i) | |
2642 | { | |
2643 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2644 | ||
2645 | ...; | |
2646 | } | |
2647 | */ | |
2fdf6df6 | 2648 | |
1fd400ff TT |
2649 | static struct dwarf2_per_cu_data * |
2650 | dw2_get_cu (int index) | |
2651 | { | |
2652 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2653 | { | |
f4dc4d17 | 2654 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2655 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2656 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2657 | } |
2658 | ||
2659 | return dwarf2_per_objfile->all_comp_units[index]; | |
2660 | } | |
2661 | ||
2662 | /* Return the primary CU given its index. | |
2663 | The difference between this function and dw2_get_cu is in the handling | |
2664 | of type units (TUs). Here we return the type_unit_group object. | |
2665 | ||
2666 | This is intended for loops like: | |
2667 | ||
2668 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2669 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2670 | { | |
2671 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2672 | ||
2673 | ...; | |
2674 | } | |
2675 | */ | |
2676 | ||
2677 | static struct dwarf2_per_cu_data * | |
2678 | dw2_get_primary_cu (int index) | |
2679 | { | |
2680 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2681 | { | |
1fd400ff | 2682 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2683 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2684 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2685 | } |
f4dc4d17 | 2686 | |
1fd400ff TT |
2687 | return dwarf2_per_objfile->all_comp_units[index]; |
2688 | } | |
2689 | ||
2ec9a5e0 TT |
2690 | /* A helper for create_cus_from_index that handles a given list of |
2691 | CUs. */ | |
2fdf6df6 | 2692 | |
74a0d9f6 | 2693 | static void |
2ec9a5e0 TT |
2694 | create_cus_from_index_list (struct objfile *objfile, |
2695 | const gdb_byte *cu_list, offset_type n_elements, | |
2696 | struct dwarf2_section_info *section, | |
2697 | int is_dwz, | |
2698 | int base_offset) | |
9291a0cd TT |
2699 | { |
2700 | offset_type i; | |
9291a0cd | 2701 | |
2ec9a5e0 | 2702 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2703 | { |
2704 | struct dwarf2_per_cu_data *the_cu; | |
2705 | ULONGEST offset, length; | |
2706 | ||
74a0d9f6 JK |
2707 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2708 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2709 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2710 | cu_list += 2 * 8; |
2711 | ||
2712 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2713 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2714 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2715 | the_cu->length = length; |
2716 | the_cu->objfile = objfile; | |
8a0459fd | 2717 | the_cu->section = section; |
9291a0cd TT |
2718 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2719 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2720 | the_cu->is_dwz = is_dwz; |
2721 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2722 | } |
9291a0cd TT |
2723 | } |
2724 | ||
2ec9a5e0 | 2725 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2726 | the CU objects for this objfile. */ |
2ec9a5e0 | 2727 | |
74a0d9f6 | 2728 | static void |
2ec9a5e0 TT |
2729 | create_cus_from_index (struct objfile *objfile, |
2730 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2731 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2732 | { | |
2733 | struct dwz_file *dwz; | |
2734 | ||
2735 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2736 | dwarf2_per_objfile->all_comp_units | |
2737 | = obstack_alloc (&objfile->objfile_obstack, | |
2738 | dwarf2_per_objfile->n_comp_units | |
2739 | * sizeof (struct dwarf2_per_cu_data *)); | |
2740 | ||
74a0d9f6 JK |
2741 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2742 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2743 | |
2744 | if (dwz_elements == 0) | |
74a0d9f6 | 2745 | return; |
2ec9a5e0 TT |
2746 | |
2747 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2748 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2749 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2750 | } |
2751 | ||
1fd400ff | 2752 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2753 | |
74a0d9f6 | 2754 | static void |
673bfd45 | 2755 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2756 | struct dwarf2_section_info *section, |
673bfd45 DE |
2757 | const gdb_byte *bytes, |
2758 | offset_type elements) | |
1fd400ff TT |
2759 | { |
2760 | offset_type i; | |
673bfd45 | 2761 | htab_t sig_types_hash; |
1fd400ff | 2762 | |
d467dd73 DE |
2763 | dwarf2_per_objfile->n_type_units = elements / 3; |
2764 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
2765 | = xmalloc (dwarf2_per_objfile->n_type_units |
2766 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2767 | |
673bfd45 | 2768 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2769 | |
2770 | for (i = 0; i < elements; i += 3) | |
2771 | { | |
52dc124a DE |
2772 | struct signatured_type *sig_type; |
2773 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2774 | void **slot; |
2775 | ||
74a0d9f6 JK |
2776 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2777 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2778 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2779 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2780 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2781 | bytes += 3 * 8; | |
2782 | ||
52dc124a | 2783 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2784 | struct signatured_type); |
52dc124a | 2785 | sig_type->signature = signature; |
3019eac3 DE |
2786 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2787 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2788 | sig_type->per_cu.section = section; |
52dc124a DE |
2789 | sig_type->per_cu.offset.sect_off = offset; |
2790 | sig_type->per_cu.objfile = objfile; | |
2791 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2792 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2793 | struct dwarf2_per_cu_quick_data); | |
2794 | ||
52dc124a DE |
2795 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2796 | *slot = sig_type; | |
1fd400ff | 2797 | |
b4dd5633 | 2798 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2799 | } |
2800 | ||
673bfd45 | 2801 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2802 | } |
2803 | ||
9291a0cd TT |
2804 | /* Read the address map data from the mapped index, and use it to |
2805 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2806 | |
9291a0cd TT |
2807 | static void |
2808 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2809 | { | |
2810 | const gdb_byte *iter, *end; | |
2811 | struct obstack temp_obstack; | |
2812 | struct addrmap *mutable_map; | |
2813 | struct cleanup *cleanup; | |
2814 | CORE_ADDR baseaddr; | |
2815 | ||
2816 | obstack_init (&temp_obstack); | |
2817 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2818 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2819 | ||
2820 | iter = index->address_table; | |
2821 | end = iter + index->address_table_size; | |
2822 | ||
2823 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2824 | ||
2825 | while (iter < end) | |
2826 | { | |
2827 | ULONGEST hi, lo, cu_index; | |
2828 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2829 | iter += 8; | |
2830 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2831 | iter += 8; | |
2832 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2833 | iter += 4; | |
f652bce2 | 2834 | |
24a55014 | 2835 | if (lo > hi) |
f652bce2 | 2836 | { |
24a55014 DE |
2837 | complaint (&symfile_complaints, |
2838 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2839 | hex_string (lo), hex_string (hi)); |
24a55014 | 2840 | continue; |
f652bce2 | 2841 | } |
24a55014 DE |
2842 | |
2843 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2844 | { |
2845 | complaint (&symfile_complaints, | |
2846 | _(".gdb_index address table has invalid CU number %u"), | |
2847 | (unsigned) cu_index); | |
24a55014 | 2848 | continue; |
f652bce2 | 2849 | } |
24a55014 DE |
2850 | |
2851 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
2852 | dw2_get_cu (cu_index)); | |
9291a0cd TT |
2853 | } |
2854 | ||
2855 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2856 | &objfile->objfile_obstack); | |
2857 | do_cleanups (cleanup); | |
2858 | } | |
2859 | ||
59d7bcaf JK |
2860 | /* The hash function for strings in the mapped index. This is the same as |
2861 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2862 | implementation. This is necessary because the hash function is tied to the | |
2863 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2864 | SYMBOL_HASH_NEXT. |
2865 | ||
2866 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2867 | |
9291a0cd | 2868 | static hashval_t |
559a7a62 | 2869 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2870 | { |
2871 | const unsigned char *str = (const unsigned char *) p; | |
2872 | hashval_t r = 0; | |
2873 | unsigned char c; | |
2874 | ||
2875 | while ((c = *str++) != 0) | |
559a7a62 JK |
2876 | { |
2877 | if (index_version >= 5) | |
2878 | c = tolower (c); | |
2879 | r = r * 67 + c - 113; | |
2880 | } | |
9291a0cd TT |
2881 | |
2882 | return r; | |
2883 | } | |
2884 | ||
2885 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2886 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2887 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2888 | |
9291a0cd TT |
2889 | static int |
2890 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2891 | offset_type **vec_out) | |
2892 | { | |
0cf03b49 JK |
2893 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2894 | offset_type hash; | |
9291a0cd | 2895 | offset_type slot, step; |
559a7a62 | 2896 | int (*cmp) (const char *, const char *); |
9291a0cd | 2897 | |
0cf03b49 JK |
2898 | if (current_language->la_language == language_cplus |
2899 | || current_language->la_language == language_java | |
2900 | || current_language->la_language == language_fortran) | |
2901 | { | |
2902 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2903 | not contain any. */ | |
2904 | const char *paren = strchr (name, '('); | |
2905 | ||
2906 | if (paren) | |
2907 | { | |
2908 | char *dup; | |
2909 | ||
2910 | dup = xmalloc (paren - name + 1); | |
2911 | memcpy (dup, name, paren - name); | |
2912 | dup[paren - name] = 0; | |
2913 | ||
2914 | make_cleanup (xfree, dup); | |
2915 | name = dup; | |
2916 | } | |
2917 | } | |
2918 | ||
559a7a62 | 2919 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2920 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2921 | simulate our NAME being searched is also lowercased. */ |
2922 | hash = mapped_index_string_hash ((index->version == 4 | |
2923 | && case_sensitivity == case_sensitive_off | |
2924 | ? 5 : index->version), | |
2925 | name); | |
2926 | ||
3876f04e DE |
2927 | slot = hash & (index->symbol_table_slots - 1); |
2928 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2929 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2930 | |
2931 | for (;;) | |
2932 | { | |
2933 | /* Convert a slot number to an offset into the table. */ | |
2934 | offset_type i = 2 * slot; | |
2935 | const char *str; | |
3876f04e | 2936 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2937 | { |
2938 | do_cleanups (back_to); | |
2939 | return 0; | |
2940 | } | |
9291a0cd | 2941 | |
3876f04e | 2942 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2943 | if (!cmp (name, str)) |
9291a0cd TT |
2944 | { |
2945 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2946 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2947 | do_cleanups (back_to); |
9291a0cd TT |
2948 | return 1; |
2949 | } | |
2950 | ||
3876f04e | 2951 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2952 | } |
2953 | } | |
2954 | ||
2ec9a5e0 TT |
2955 | /* A helper function that reads the .gdb_index from SECTION and fills |
2956 | in MAP. FILENAME is the name of the file containing the section; | |
2957 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2958 | ok to use deprecated sections. | |
2959 | ||
2960 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2961 | out parameters that are filled in with information about the CU and | |
2962 | TU lists in the section. | |
2963 | ||
2964 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2965 | |
9291a0cd | 2966 | static int |
2ec9a5e0 TT |
2967 | read_index_from_section (struct objfile *objfile, |
2968 | const char *filename, | |
2969 | int deprecated_ok, | |
2970 | struct dwarf2_section_info *section, | |
2971 | struct mapped_index *map, | |
2972 | const gdb_byte **cu_list, | |
2973 | offset_type *cu_list_elements, | |
2974 | const gdb_byte **types_list, | |
2975 | offset_type *types_list_elements) | |
9291a0cd | 2976 | { |
948f8e3d | 2977 | const gdb_byte *addr; |
2ec9a5e0 | 2978 | offset_type version; |
b3b272e1 | 2979 | offset_type *metadata; |
1fd400ff | 2980 | int i; |
9291a0cd | 2981 | |
2ec9a5e0 | 2982 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2983 | return 0; |
82430852 JK |
2984 | |
2985 | /* Older elfutils strip versions could keep the section in the main | |
2986 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 2987 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2988 | return 0; |
2989 | ||
2ec9a5e0 | 2990 | dwarf2_read_section (objfile, section); |
9291a0cd | 2991 | |
2ec9a5e0 | 2992 | addr = section->buffer; |
9291a0cd | 2993 | /* Version check. */ |
1fd400ff | 2994 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2995 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2996 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2997 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2998 | indices. */ |
831adc1f | 2999 | if (version < 4) |
481860b3 GB |
3000 | { |
3001 | static int warning_printed = 0; | |
3002 | if (!warning_printed) | |
3003 | { | |
3004 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3005 | filename); |
481860b3 GB |
3006 | warning_printed = 1; |
3007 | } | |
3008 | return 0; | |
3009 | } | |
3010 | /* Index version 4 uses a different hash function than index version | |
3011 | 5 and later. | |
3012 | ||
3013 | Versions earlier than 6 did not emit psymbols for inlined | |
3014 | functions. Using these files will cause GDB not to be able to | |
3015 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3016 | indices unless the user has done |
3017 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3018 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3019 | { |
3020 | static int warning_printed = 0; | |
3021 | if (!warning_printed) | |
3022 | { | |
e615022a DE |
3023 | warning (_("\ |
3024 | Skipping deprecated .gdb_index section in %s.\n\ | |
3025 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3026 | to use the section anyway."), | |
2ec9a5e0 | 3027 | filename); |
481860b3 GB |
3028 | warning_printed = 1; |
3029 | } | |
3030 | return 0; | |
3031 | } | |
796a7ff8 DE |
3032 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
3033 | of the TU (for symbols coming from TUs). It's just a performance bug, and | |
3034 | we can't distinguish gdb-generated indices from gold-generated ones, so | |
3035 | nothing to do here. */ | |
3036 | ||
481860b3 | 3037 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3038 | longer backward compatible. */ |
796a7ff8 | 3039 | if (version > 8) |
594e8718 | 3040 | return 0; |
9291a0cd | 3041 | |
559a7a62 | 3042 | map->version = version; |
2ec9a5e0 | 3043 | map->total_size = section->size; |
9291a0cd TT |
3044 | |
3045 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3046 | |
3047 | i = 0; | |
2ec9a5e0 TT |
3048 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3049 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3050 | / 8); | |
1fd400ff TT |
3051 | ++i; |
3052 | ||
2ec9a5e0 TT |
3053 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3054 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3055 | - MAYBE_SWAP (metadata[i])) | |
3056 | / 8); | |
987d643c | 3057 | ++i; |
1fd400ff TT |
3058 | |
3059 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3060 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3061 | - MAYBE_SWAP (metadata[i])); | |
3062 | ++i; | |
3063 | ||
3876f04e DE |
3064 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3065 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3066 | - MAYBE_SWAP (metadata[i])) | |
3067 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3068 | ++i; |
9291a0cd | 3069 | |
f9d83a0b | 3070 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3071 | |
2ec9a5e0 TT |
3072 | return 1; |
3073 | } | |
3074 | ||
3075 | ||
3076 | /* Read the index file. If everything went ok, initialize the "quick" | |
3077 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3078 | ||
3079 | static int | |
3080 | dwarf2_read_index (struct objfile *objfile) | |
3081 | { | |
3082 | struct mapped_index local_map, *map; | |
3083 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3084 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3085 | struct dwz_file *dwz; |
2ec9a5e0 | 3086 | |
4262abfb | 3087 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3088 | use_deprecated_index_sections, |
3089 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3090 | &cu_list, &cu_list_elements, | |
3091 | &types_list, &types_list_elements)) | |
3092 | return 0; | |
3093 | ||
0fefef59 | 3094 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3095 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3096 | return 0; |
3097 | ||
2ec9a5e0 TT |
3098 | /* If there is a .dwz file, read it so we can get its CU list as |
3099 | well. */ | |
4db1a1dc TT |
3100 | dwz = dwarf2_get_dwz_file (); |
3101 | if (dwz != NULL) | |
2ec9a5e0 | 3102 | { |
2ec9a5e0 TT |
3103 | struct mapped_index dwz_map; |
3104 | const gdb_byte *dwz_types_ignore; | |
3105 | offset_type dwz_types_elements_ignore; | |
3106 | ||
3107 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3108 | 1, | |
3109 | &dwz->gdb_index, &dwz_map, | |
3110 | &dwz_list, &dwz_list_elements, | |
3111 | &dwz_types_ignore, | |
3112 | &dwz_types_elements_ignore)) | |
3113 | { | |
3114 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3115 | bfd_get_filename (dwz->dwz_bfd)); | |
3116 | return 0; | |
3117 | } | |
3118 | } | |
3119 | ||
74a0d9f6 JK |
3120 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3121 | dwz_list_elements); | |
1fd400ff | 3122 | |
8b70b953 TT |
3123 | if (types_list_elements) |
3124 | { | |
3125 | struct dwarf2_section_info *section; | |
3126 | ||
3127 | /* We can only handle a single .debug_types when we have an | |
3128 | index. */ | |
3129 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3130 | return 0; | |
3131 | ||
3132 | section = VEC_index (dwarf2_section_info_def, | |
3133 | dwarf2_per_objfile->types, 0); | |
3134 | ||
74a0d9f6 JK |
3135 | create_signatured_type_table_from_index (objfile, section, types_list, |
3136 | types_list_elements); | |
8b70b953 | 3137 | } |
9291a0cd | 3138 | |
2ec9a5e0 TT |
3139 | create_addrmap_from_index (objfile, &local_map); |
3140 | ||
3141 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3142 | *map = local_map; | |
9291a0cd TT |
3143 | |
3144 | dwarf2_per_objfile->index_table = map; | |
3145 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3146 | dwarf2_per_objfile->quick_file_names_table = |
3147 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3148 | |
3149 | return 1; | |
3150 | } | |
3151 | ||
3152 | /* A helper for the "quick" functions which sets the global | |
3153 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3154 | |
9291a0cd TT |
3155 | static void |
3156 | dw2_setup (struct objfile *objfile) | |
3157 | { | |
3158 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3159 | gdb_assert (dwarf2_per_objfile); | |
3160 | } | |
3161 | ||
dee91e82 | 3162 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3163 | |
dee91e82 DE |
3164 | static void |
3165 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3166 | const gdb_byte *info_ptr, |
dee91e82 DE |
3167 | struct die_info *comp_unit_die, |
3168 | int has_children, | |
3169 | void *data) | |
9291a0cd | 3170 | { |
dee91e82 DE |
3171 | struct dwarf2_cu *cu = reader->cu; |
3172 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3173 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3174 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3175 | struct line_header *lh; |
9291a0cd | 3176 | struct attribute *attr; |
dee91e82 | 3177 | int i; |
15d034d0 | 3178 | const char *name, *comp_dir; |
7b9f3c50 DE |
3179 | void **slot; |
3180 | struct quick_file_names *qfn; | |
3181 | unsigned int line_offset; | |
9291a0cd | 3182 | |
0186c6a7 DE |
3183 | gdb_assert (! this_cu->is_debug_types); |
3184 | ||
07261596 TT |
3185 | /* Our callers never want to match partial units -- instead they |
3186 | will match the enclosing full CU. */ | |
3187 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3188 | { | |
3189 | this_cu->v.quick->no_file_data = 1; | |
3190 | return; | |
3191 | } | |
3192 | ||
0186c6a7 | 3193 | lh_cu = this_cu; |
7b9f3c50 DE |
3194 | lh = NULL; |
3195 | slot = NULL; | |
3196 | line_offset = 0; | |
dee91e82 DE |
3197 | |
3198 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3199 | if (attr) |
3200 | { | |
7b9f3c50 DE |
3201 | struct quick_file_names find_entry; |
3202 | ||
3203 | line_offset = DW_UNSND (attr); | |
3204 | ||
3205 | /* We may have already read in this line header (TU line header sharing). | |
3206 | If we have we're done. */ | |
094b34ac DE |
3207 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3208 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3209 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3210 | &find_entry, INSERT); | |
3211 | if (*slot != NULL) | |
3212 | { | |
094b34ac | 3213 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3214 | return; |
7b9f3c50 DE |
3215 | } |
3216 | ||
3019eac3 | 3217 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3218 | } |
3219 | if (lh == NULL) | |
3220 | { | |
094b34ac | 3221 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3222 | return; |
9291a0cd TT |
3223 | } |
3224 | ||
7b9f3c50 | 3225 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3226 | qfn->hash.dwo_unit = cu->dwo_unit; |
3227 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3228 | gdb_assert (slot != NULL); |
3229 | *slot = qfn; | |
9291a0cd | 3230 | |
dee91e82 | 3231 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3232 | |
7b9f3c50 DE |
3233 | qfn->num_file_names = lh->num_file_names; |
3234 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3235 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3236 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3237 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3238 | qfn->real_names = NULL; | |
9291a0cd | 3239 | |
7b9f3c50 | 3240 | free_line_header (lh); |
7b9f3c50 | 3241 | |
094b34ac | 3242 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3243 | } |
3244 | ||
3245 | /* A helper for the "quick" functions which attempts to read the line | |
3246 | table for THIS_CU. */ | |
3247 | ||
3248 | static struct quick_file_names * | |
e4a48d9d | 3249 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3250 | { |
0186c6a7 DE |
3251 | /* This should never be called for TUs. */ |
3252 | gdb_assert (! this_cu->is_debug_types); | |
3253 | /* Nor type unit groups. */ | |
3254 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3255 | |
dee91e82 DE |
3256 | if (this_cu->v.quick->file_names != NULL) |
3257 | return this_cu->v.quick->file_names; | |
3258 | /* If we know there is no line data, no point in looking again. */ | |
3259 | if (this_cu->v.quick->no_file_data) | |
3260 | return NULL; | |
3261 | ||
0186c6a7 | 3262 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3263 | |
3264 | if (this_cu->v.quick->no_file_data) | |
3265 | return NULL; | |
3266 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3267 | } |
3268 | ||
3269 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3270 | real path for a given file name from the line table. */ |
2fdf6df6 | 3271 | |
9291a0cd | 3272 | static const char * |
7b9f3c50 DE |
3273 | dw2_get_real_path (struct objfile *objfile, |
3274 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3275 | { |
7b9f3c50 DE |
3276 | if (qfn->real_names == NULL) |
3277 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
3278 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 3279 | |
7b9f3c50 DE |
3280 | if (qfn->real_names[index] == NULL) |
3281 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3282 | |
7b9f3c50 | 3283 | return qfn->real_names[index]; |
9291a0cd TT |
3284 | } |
3285 | ||
3286 | static struct symtab * | |
3287 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3288 | { | |
3289 | int index; | |
ae2de4f8 | 3290 | |
9291a0cd TT |
3291 | dw2_setup (objfile); |
3292 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 3293 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
3294 | } |
3295 | ||
7b9f3c50 DE |
3296 | /* Traversal function for dw2_forget_cached_source_info. */ |
3297 | ||
3298 | static int | |
3299 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3300 | { |
7b9f3c50 | 3301 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3302 | |
7b9f3c50 | 3303 | if (file_data->real_names) |
9291a0cd | 3304 | { |
7b9f3c50 | 3305 | int i; |
9291a0cd | 3306 | |
7b9f3c50 | 3307 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3308 | { |
7b9f3c50 DE |
3309 | xfree ((void*) file_data->real_names[i]); |
3310 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3311 | } |
3312 | } | |
7b9f3c50 DE |
3313 | |
3314 | return 1; | |
3315 | } | |
3316 | ||
3317 | static void | |
3318 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3319 | { | |
3320 | dw2_setup (objfile); | |
3321 | ||
3322 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3323 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3324 | } |
3325 | ||
f8eba3c6 TT |
3326 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3327 | the symtabs and calls the iterator. */ | |
3328 | ||
3329 | static int | |
3330 | dw2_map_expand_apply (struct objfile *objfile, | |
3331 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3332 | const char *name, const char *real_path, |
f8eba3c6 TT |
3333 | int (*callback) (struct symtab *, void *), |
3334 | void *data) | |
3335 | { | |
3336 | struct symtab *last_made = objfile->symtabs; | |
3337 | ||
3338 | /* Don't visit already-expanded CUs. */ | |
3339 | if (per_cu->v.quick->symtab) | |
3340 | return 0; | |
3341 | ||
3342 | /* This may expand more than one symtab, and we want to iterate over | |
3343 | all of them. */ | |
a0f42c21 | 3344 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3345 | |
f5b95b50 | 3346 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3347 | objfile->symtabs, last_made); |
3348 | } | |
3349 | ||
3350 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3351 | ||
9291a0cd | 3352 | static int |
f8eba3c6 | 3353 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3354 | const char *real_path, |
f8eba3c6 TT |
3355 | int (*callback) (struct symtab *, void *), |
3356 | void *data) | |
9291a0cd TT |
3357 | { |
3358 | int i; | |
c011a4f4 | 3359 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3360 | |
3361 | dw2_setup (objfile); | |
ae2de4f8 | 3362 | |
848e3e78 DE |
3363 | /* The rule is CUs specify all the files, including those used by |
3364 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3365 | |
848e3e78 | 3366 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3367 | { |
3368 | int j; | |
f4dc4d17 | 3369 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3370 | struct quick_file_names *file_data; |
9291a0cd | 3371 | |
3d7bb9d9 | 3372 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3373 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3374 | continue; |
3375 | ||
e4a48d9d | 3376 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3377 | if (file_data == NULL) |
9291a0cd TT |
3378 | continue; |
3379 | ||
7b9f3c50 | 3380 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3381 | { |
7b9f3c50 | 3382 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3383 | const char *this_real_name; |
9291a0cd | 3384 | |
af529f8f | 3385 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3386 | { |
f5b95b50 | 3387 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3388 | callback, data)) |
3389 | return 1; | |
288e77a7 | 3390 | continue; |
4aac40c8 | 3391 | } |
9291a0cd | 3392 | |
c011a4f4 DE |
3393 | /* Before we invoke realpath, which can get expensive when many |
3394 | files are involved, do a quick comparison of the basenames. */ | |
3395 | if (! basenames_may_differ | |
3396 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3397 | continue; | |
3398 | ||
da235a7c JK |
3399 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3400 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3401 | { |
da235a7c JK |
3402 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3403 | callback, data)) | |
3404 | return 1; | |
288e77a7 | 3405 | continue; |
da235a7c | 3406 | } |
9291a0cd | 3407 | |
da235a7c JK |
3408 | if (real_path != NULL) |
3409 | { | |
af529f8f JK |
3410 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3411 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3412 | if (this_real_name != NULL |
af529f8f | 3413 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3414 | { |
f5b95b50 | 3415 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3416 | callback, data)) |
3417 | return 1; | |
288e77a7 | 3418 | continue; |
9291a0cd TT |
3419 | } |
3420 | } | |
3421 | } | |
3422 | } | |
3423 | ||
9291a0cd TT |
3424 | return 0; |
3425 | } | |
3426 | ||
da51c347 DE |
3427 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3428 | ||
3429 | struct dw2_symtab_iterator | |
9291a0cd | 3430 | { |
da51c347 DE |
3431 | /* The internalized form of .gdb_index. */ |
3432 | struct mapped_index *index; | |
3433 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3434 | int want_specific_block; | |
3435 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3436 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3437 | int block_index; | |
3438 | /* The kind of symbol we're looking for. */ | |
3439 | domain_enum domain; | |
3440 | /* The list of CUs from the index entry of the symbol, | |
3441 | or NULL if not found. */ | |
3442 | offset_type *vec; | |
3443 | /* The next element in VEC to look at. */ | |
3444 | int next; | |
3445 | /* The number of elements in VEC, or zero if there is no match. */ | |
3446 | int length; | |
3447 | }; | |
9291a0cd | 3448 | |
da51c347 DE |
3449 | /* Initialize the index symtab iterator ITER. |
3450 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3451 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3452 | |
9291a0cd | 3453 | static void |
da51c347 DE |
3454 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3455 | struct mapped_index *index, | |
3456 | int want_specific_block, | |
3457 | int block_index, | |
3458 | domain_enum domain, | |
3459 | const char *name) | |
3460 | { | |
3461 | iter->index = index; | |
3462 | iter->want_specific_block = want_specific_block; | |
3463 | iter->block_index = block_index; | |
3464 | iter->domain = domain; | |
3465 | iter->next = 0; | |
3466 | ||
3467 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3468 | iter->length = MAYBE_SWAP (*iter->vec); | |
3469 | else | |
3470 | { | |
3471 | iter->vec = NULL; | |
3472 | iter->length = 0; | |
3473 | } | |
3474 | } | |
3475 | ||
3476 | /* Return the next matching CU or NULL if there are no more. */ | |
3477 | ||
3478 | static struct dwarf2_per_cu_data * | |
3479 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3480 | { | |
3481 | for ( ; iter->next < iter->length; ++iter->next) | |
3482 | { | |
3483 | offset_type cu_index_and_attrs = | |
3484 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3485 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3486 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3487 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3488 | /* This value is only valid for index versions >= 7. */ | |
3489 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3490 | gdb_index_symbol_kind symbol_kind = | |
3491 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3492 | /* Only check the symbol attributes if they're present. | |
3493 | Indices prior to version 7 don't record them, | |
3494 | and indices >= 7 may elide them for certain symbols | |
3495 | (gold does this). */ | |
3496 | int attrs_valid = | |
3497 | (iter->index->version >= 7 | |
3498 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3499 | ||
3190f0c6 DE |
3500 | /* Don't crash on bad data. */ |
3501 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3502 | + dwarf2_per_objfile->n_type_units)) | |
3503 | { | |
3504 | complaint (&symfile_complaints, | |
3505 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3506 | " [in module %s]"), |
3507 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3508 | continue; |
3509 | } | |
3510 | ||
3511 | per_cu = dw2_get_cu (cu_index); | |
3512 | ||
da51c347 DE |
3513 | /* Skip if already read in. */ |
3514 | if (per_cu->v.quick->symtab) | |
3515 | continue; | |
3516 | ||
3517 | if (attrs_valid | |
3518 | && iter->want_specific_block | |
3519 | && want_static != is_static) | |
3520 | continue; | |
3521 | ||
3522 | /* Only check the symbol's kind if it has one. */ | |
3523 | if (attrs_valid) | |
3524 | { | |
3525 | switch (iter->domain) | |
3526 | { | |
3527 | case VAR_DOMAIN: | |
3528 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3529 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3530 | /* Some types are also in VAR_DOMAIN. */ | |
3531 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3532 | continue; | |
3533 | break; | |
3534 | case STRUCT_DOMAIN: | |
3535 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3536 | continue; | |
3537 | break; | |
3538 | case LABEL_DOMAIN: | |
3539 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3540 | continue; | |
3541 | break; | |
3542 | default: | |
3543 | break; | |
3544 | } | |
3545 | } | |
3546 | ||
3547 | ++iter->next; | |
3548 | return per_cu; | |
3549 | } | |
3550 | ||
3551 | return NULL; | |
3552 | } | |
3553 | ||
3554 | static struct symtab * | |
3555 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3556 | const char *name, domain_enum domain) | |
9291a0cd | 3557 | { |
da51c347 | 3558 | struct symtab *stab_best = NULL; |
156942c7 DE |
3559 | struct mapped_index *index; |
3560 | ||
9291a0cd TT |
3561 | dw2_setup (objfile); |
3562 | ||
156942c7 DE |
3563 | index = dwarf2_per_objfile->index_table; |
3564 | ||
da51c347 | 3565 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3566 | if (index) |
9291a0cd | 3567 | { |
da51c347 DE |
3568 | struct dw2_symtab_iterator iter; |
3569 | struct dwarf2_per_cu_data *per_cu; | |
3570 | ||
3571 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3572 | |
da51c347 | 3573 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3574 | { |
da51c347 DE |
3575 | struct symbol *sym = NULL; |
3576 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3577 | ||
3578 | /* Some caution must be observed with overloaded functions | |
3579 | and methods, since the index will not contain any overload | |
3580 | information (but NAME might contain it). */ | |
3581 | if (stab->primary) | |
9291a0cd | 3582 | { |
da51c347 DE |
3583 | struct blockvector *bv = BLOCKVECTOR (stab); |
3584 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3585 | |
da51c347 DE |
3586 | sym = lookup_block_symbol (block, name, domain); |
3587 | } | |
1fd400ff | 3588 | |
da51c347 DE |
3589 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3590 | { | |
3591 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3592 | return stab; | |
3593 | ||
3594 | stab_best = stab; | |
9291a0cd | 3595 | } |
da51c347 DE |
3596 | |
3597 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3598 | } |
3599 | } | |
9291a0cd | 3600 | |
da51c347 | 3601 | return stab_best; |
9291a0cd TT |
3602 | } |
3603 | ||
3604 | static void | |
3605 | dw2_print_stats (struct objfile *objfile) | |
3606 | { | |
e4a48d9d | 3607 | int i, total, count; |
9291a0cd TT |
3608 | |
3609 | dw2_setup (objfile); | |
e4a48d9d | 3610 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3611 | count = 0; |
e4a48d9d | 3612 | for (i = 0; i < total; ++i) |
9291a0cd | 3613 | { |
e254ef6a | 3614 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3615 | |
e254ef6a | 3616 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3617 | ++count; |
3618 | } | |
e4a48d9d | 3619 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3620 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3621 | } | |
3622 | ||
779bd270 DE |
3623 | /* This dumps minimal information about the index. |
3624 | It is called via "mt print objfiles". | |
3625 | One use is to verify .gdb_index has been loaded by the | |
3626 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3627 | ||
9291a0cd TT |
3628 | static void |
3629 | dw2_dump (struct objfile *objfile) | |
3630 | { | |
779bd270 DE |
3631 | dw2_setup (objfile); |
3632 | gdb_assert (dwarf2_per_objfile->using_index); | |
3633 | printf_filtered (".gdb_index:"); | |
3634 | if (dwarf2_per_objfile->index_table != NULL) | |
3635 | { | |
3636 | printf_filtered (" version %d\n", | |
3637 | dwarf2_per_objfile->index_table->version); | |
3638 | } | |
3639 | else | |
3640 | printf_filtered (" faked for \"readnow\"\n"); | |
3641 | printf_filtered ("\n"); | |
9291a0cd TT |
3642 | } |
3643 | ||
3644 | static void | |
3189cb12 DE |
3645 | dw2_relocate (struct objfile *objfile, |
3646 | const struct section_offsets *new_offsets, | |
3647 | const struct section_offsets *delta) | |
9291a0cd TT |
3648 | { |
3649 | /* There's nothing to relocate here. */ | |
3650 | } | |
3651 | ||
3652 | static void | |
3653 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3654 | const char *func_name) | |
3655 | { | |
da51c347 DE |
3656 | struct mapped_index *index; |
3657 | ||
3658 | dw2_setup (objfile); | |
3659 | ||
3660 | index = dwarf2_per_objfile->index_table; | |
3661 | ||
3662 | /* index is NULL if OBJF_READNOW. */ | |
3663 | if (index) | |
3664 | { | |
3665 | struct dw2_symtab_iterator iter; | |
3666 | struct dwarf2_per_cu_data *per_cu; | |
3667 | ||
3668 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3669 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3670 | func_name); | |
3671 | ||
3672 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3673 | dw2_instantiate_symtab (per_cu); | |
3674 | } | |
9291a0cd TT |
3675 | } |
3676 | ||
3677 | static void | |
3678 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3679 | { | |
3680 | int i; | |
3681 | ||
3682 | dw2_setup (objfile); | |
1fd400ff TT |
3683 | |
3684 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3685 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3686 | { |
e254ef6a | 3687 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3688 | |
a0f42c21 | 3689 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3690 | } |
3691 | } | |
3692 | ||
3693 | static void | |
652a8996 JK |
3694 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3695 | const char *fullname) | |
9291a0cd TT |
3696 | { |
3697 | int i; | |
3698 | ||
3699 | dw2_setup (objfile); | |
d4637a04 DE |
3700 | |
3701 | /* We don't need to consider type units here. | |
3702 | This is only called for examining code, e.g. expand_line_sal. | |
3703 | There can be an order of magnitude (or more) more type units | |
3704 | than comp units, and we avoid them if we can. */ | |
3705 | ||
3706 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3707 | { |
3708 | int j; | |
e254ef6a | 3709 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3710 | struct quick_file_names *file_data; |
9291a0cd | 3711 | |
3d7bb9d9 | 3712 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3713 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3714 | continue; |
3715 | ||
e4a48d9d | 3716 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3717 | if (file_data == NULL) |
9291a0cd TT |
3718 | continue; |
3719 | ||
7b9f3c50 | 3720 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3721 | { |
652a8996 JK |
3722 | const char *this_fullname = file_data->file_names[j]; |
3723 | ||
3724 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3725 | { |
a0f42c21 | 3726 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3727 | break; |
3728 | } | |
3729 | } | |
3730 | } | |
3731 | } | |
3732 | ||
9291a0cd | 3733 | static void |
ade7ed9e DE |
3734 | dw2_map_matching_symbols (struct objfile *objfile, |
3735 | const char * name, domain_enum namespace, | |
3736 | int global, | |
40658b94 PH |
3737 | int (*callback) (struct block *, |
3738 | struct symbol *, void *), | |
2edb89d3 JK |
3739 | void *data, symbol_compare_ftype *match, |
3740 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3741 | { |
40658b94 | 3742 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3743 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3744 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3745 | } |
3746 | ||
3747 | static void | |
f8eba3c6 TT |
3748 | dw2_expand_symtabs_matching |
3749 | (struct objfile *objfile, | |
fbd9ab74 | 3750 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3751 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3752 | enum search_domain kind, |
3753 | void *data) | |
9291a0cd TT |
3754 | { |
3755 | int i; | |
3756 | offset_type iter; | |
4b5246aa | 3757 | struct mapped_index *index; |
9291a0cd TT |
3758 | |
3759 | dw2_setup (objfile); | |
ae2de4f8 DE |
3760 | |
3761 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3762 | if (!dwarf2_per_objfile->index_table) |
3763 | return; | |
4b5246aa | 3764 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3765 | |
7b08b9eb | 3766 | if (file_matcher != NULL) |
24c79950 TT |
3767 | { |
3768 | struct cleanup *cleanup; | |
3769 | htab_t visited_found, visited_not_found; | |
3770 | ||
3771 | visited_found = htab_create_alloc (10, | |
3772 | htab_hash_pointer, htab_eq_pointer, | |
3773 | NULL, xcalloc, xfree); | |
3774 | cleanup = make_cleanup_htab_delete (visited_found); | |
3775 | visited_not_found = htab_create_alloc (10, | |
3776 | htab_hash_pointer, htab_eq_pointer, | |
3777 | NULL, xcalloc, xfree); | |
3778 | make_cleanup_htab_delete (visited_not_found); | |
3779 | ||
848e3e78 DE |
3780 | /* The rule is CUs specify all the files, including those used by |
3781 | any TU, so there's no need to scan TUs here. */ | |
3782 | ||
3783 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3784 | { |
3785 | int j; | |
f4dc4d17 | 3786 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3787 | struct quick_file_names *file_data; |
3788 | void **slot; | |
7b08b9eb | 3789 | |
24c79950 | 3790 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3791 | |
24c79950 TT |
3792 | /* We only need to look at symtabs not already expanded. */ |
3793 | if (per_cu->v.quick->symtab) | |
3794 | continue; | |
7b08b9eb | 3795 | |
e4a48d9d | 3796 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3797 | if (file_data == NULL) |
3798 | continue; | |
7b08b9eb | 3799 | |
24c79950 TT |
3800 | if (htab_find (visited_not_found, file_data) != NULL) |
3801 | continue; | |
3802 | else if (htab_find (visited_found, file_data) != NULL) | |
3803 | { | |
3804 | per_cu->v.quick->mark = 1; | |
3805 | continue; | |
3806 | } | |
3807 | ||
3808 | for (j = 0; j < file_data->num_file_names; ++j) | |
3809 | { | |
da235a7c JK |
3810 | const char *this_real_name; |
3811 | ||
fbd9ab74 | 3812 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3813 | { |
3814 | per_cu->v.quick->mark = 1; | |
3815 | break; | |
3816 | } | |
da235a7c JK |
3817 | |
3818 | /* Before we invoke realpath, which can get expensive when many | |
3819 | files are involved, do a quick comparison of the basenames. */ | |
3820 | if (!basenames_may_differ | |
3821 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3822 | data, 1)) | |
3823 | continue; | |
3824 | ||
3825 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3826 | if (file_matcher (this_real_name, data, 0)) | |
3827 | { | |
3828 | per_cu->v.quick->mark = 1; | |
3829 | break; | |
3830 | } | |
24c79950 TT |
3831 | } |
3832 | ||
3833 | slot = htab_find_slot (per_cu->v.quick->mark | |
3834 | ? visited_found | |
3835 | : visited_not_found, | |
3836 | file_data, INSERT); | |
3837 | *slot = file_data; | |
3838 | } | |
3839 | ||
3840 | do_cleanups (cleanup); | |
3841 | } | |
9291a0cd | 3842 | |
3876f04e | 3843 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3844 | { |
3845 | offset_type idx = 2 * iter; | |
3846 | const char *name; | |
3847 | offset_type *vec, vec_len, vec_idx; | |
3848 | ||
3876f04e | 3849 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3850 | continue; |
3851 | ||
3876f04e | 3852 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3853 | |
e078317b | 3854 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3855 | continue; |
3856 | ||
3857 | /* The name was matched, now expand corresponding CUs that were | |
3858 | marked. */ | |
4b5246aa | 3859 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3860 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3861 | vec_len = MAYBE_SWAP (vec[0]); |
3862 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3863 | { | |
e254ef6a | 3864 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3865 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3866 | gdb_index_symbol_kind symbol_kind = | |
3867 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3868 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3869 | /* Only check the symbol attributes if they're present. |
3870 | Indices prior to version 7 don't record them, | |
3871 | and indices >= 7 may elide them for certain symbols | |
3872 | (gold does this). */ | |
3873 | int attrs_valid = | |
3874 | (index->version >= 7 | |
3875 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3876 | ||
3877 | /* Only check the symbol's kind if it has one. */ | |
3878 | if (attrs_valid) | |
156942c7 DE |
3879 | { |
3880 | switch (kind) | |
3881 | { | |
3882 | case VARIABLES_DOMAIN: | |
3883 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3884 | continue; | |
3885 | break; | |
3886 | case FUNCTIONS_DOMAIN: | |
3887 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3888 | continue; | |
3889 | break; | |
3890 | case TYPES_DOMAIN: | |
3891 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3892 | continue; | |
3893 | break; | |
3894 | default: | |
3895 | break; | |
3896 | } | |
3897 | } | |
3898 | ||
3190f0c6 DE |
3899 | /* Don't crash on bad data. */ |
3900 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3901 | + dwarf2_per_objfile->n_type_units)) | |
3902 | { | |
3903 | complaint (&symfile_complaints, | |
3904 | _(".gdb_index entry has bad CU index" | |
4262abfb | 3905 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
3906 | continue; |
3907 | } | |
3908 | ||
156942c7 | 3909 | per_cu = dw2_get_cu (cu_index); |
7b08b9eb | 3910 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3911 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3912 | } |
3913 | } | |
3914 | } | |
3915 | ||
9703b513 TT |
3916 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3917 | symtab. */ | |
3918 | ||
3919 | static struct symtab * | |
3920 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3921 | { | |
3922 | int i; | |
3923 | ||
3924 | if (BLOCKVECTOR (symtab) != NULL | |
3925 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3926 | return symtab; | |
3927 | ||
a3ec0bb1 DE |
3928 | if (symtab->includes == NULL) |
3929 | return NULL; | |
3930 | ||
9703b513 TT |
3931 | for (i = 0; symtab->includes[i]; ++i) |
3932 | { | |
a3ec0bb1 | 3933 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3934 | |
3935 | s = recursively_find_pc_sect_symtab (s, pc); | |
3936 | if (s != NULL) | |
3937 | return s; | |
3938 | } | |
3939 | ||
3940 | return NULL; | |
3941 | } | |
3942 | ||
9291a0cd TT |
3943 | static struct symtab * |
3944 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3945 | struct minimal_symbol *msymbol, | |
3946 | CORE_ADDR pc, | |
3947 | struct obj_section *section, | |
3948 | int warn_if_readin) | |
3949 | { | |
3950 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3951 | struct symtab *result; |
9291a0cd TT |
3952 | |
3953 | dw2_setup (objfile); | |
3954 | ||
3955 | if (!objfile->psymtabs_addrmap) | |
3956 | return NULL; | |
3957 | ||
3958 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3959 | if (!data) | |
3960 | return NULL; | |
3961 | ||
3962 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3963 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3964 | paddress (get_objfile_arch (objfile), pc)); |
3965 | ||
9703b513 TT |
3966 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3967 | gdb_assert (result != NULL); | |
3968 | return result; | |
9291a0cd TT |
3969 | } |
3970 | ||
9291a0cd | 3971 | static void |
44b13c5a | 3972 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3973 | void *data, int need_fullname) |
9291a0cd TT |
3974 | { |
3975 | int i; | |
24c79950 TT |
3976 | struct cleanup *cleanup; |
3977 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3978 | NULL, xcalloc, xfree); | |
9291a0cd | 3979 | |
24c79950 | 3980 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3981 | dw2_setup (objfile); |
ae2de4f8 | 3982 | |
848e3e78 DE |
3983 | /* The rule is CUs specify all the files, including those used by |
3984 | any TU, so there's no need to scan TUs here. | |
3985 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 3986 | |
848e3e78 | 3987 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
3988 | { |
3989 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3990 | ||
3991 | if (per_cu->v.quick->symtab) | |
3992 | { | |
3993 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3994 | INSERT); | |
3995 | ||
3996 | *slot = per_cu->v.quick->file_names; | |
3997 | } | |
3998 | } | |
3999 | ||
848e3e78 | 4000 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4001 | { |
4002 | int j; | |
f4dc4d17 | 4003 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 4004 | struct quick_file_names *file_data; |
24c79950 | 4005 | void **slot; |
9291a0cd | 4006 | |
3d7bb9d9 | 4007 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 4008 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
4009 | continue; |
4010 | ||
e4a48d9d | 4011 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4012 | if (file_data == NULL) |
9291a0cd TT |
4013 | continue; |
4014 | ||
24c79950 TT |
4015 | slot = htab_find_slot (visited, file_data, INSERT); |
4016 | if (*slot) | |
4017 | { | |
4018 | /* Already visited. */ | |
4019 | continue; | |
4020 | } | |
4021 | *slot = file_data; | |
4022 | ||
7b9f3c50 | 4023 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4024 | { |
74e2f255 DE |
4025 | const char *this_real_name; |
4026 | ||
4027 | if (need_fullname) | |
4028 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4029 | else | |
4030 | this_real_name = NULL; | |
7b9f3c50 | 4031 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4032 | } |
4033 | } | |
24c79950 TT |
4034 | |
4035 | do_cleanups (cleanup); | |
9291a0cd TT |
4036 | } |
4037 | ||
4038 | static int | |
4039 | dw2_has_symbols (struct objfile *objfile) | |
4040 | { | |
4041 | return 1; | |
4042 | } | |
4043 | ||
4044 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4045 | { | |
4046 | dw2_has_symbols, | |
4047 | dw2_find_last_source_symtab, | |
4048 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4049 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4050 | dw2_lookup_symbol, |
9291a0cd TT |
4051 | dw2_print_stats, |
4052 | dw2_dump, | |
4053 | dw2_relocate, | |
4054 | dw2_expand_symtabs_for_function, | |
4055 | dw2_expand_all_symtabs, | |
652a8996 | 4056 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4057 | dw2_map_matching_symbols, |
9291a0cd TT |
4058 | dw2_expand_symtabs_matching, |
4059 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
4060 | dw2_map_symbol_filenames |
4061 | }; | |
4062 | ||
4063 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4064 | file will use psymtabs, or 1 if using the GNU index. */ | |
4065 | ||
4066 | int | |
4067 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4068 | { | |
4069 | /* If we're about to read full symbols, don't bother with the | |
4070 | indices. In this case we also don't care if some other debug | |
4071 | format is making psymtabs, because they are all about to be | |
4072 | expanded anyway. */ | |
4073 | if ((objfile->flags & OBJF_READNOW)) | |
4074 | { | |
4075 | int i; | |
4076 | ||
4077 | dwarf2_per_objfile->using_index = 1; | |
4078 | create_all_comp_units (objfile); | |
0e50663e | 4079 | create_all_type_units (objfile); |
7b9f3c50 DE |
4080 | dwarf2_per_objfile->quick_file_names_table = |
4081 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4082 | |
1fd400ff | 4083 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4084 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4085 | { |
e254ef6a | 4086 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 4087 | |
e254ef6a DE |
4088 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4089 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4090 | } |
4091 | ||
4092 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4093 | these functions will be no-ops because we will have expanded | |
4094 | all symtabs. */ | |
4095 | return 1; | |
4096 | } | |
4097 | ||
4098 | if (dwarf2_read_index (objfile)) | |
4099 | return 1; | |
4100 | ||
9291a0cd TT |
4101 | return 0; |
4102 | } | |
4103 | ||
4104 | \f | |
4105 | ||
dce234bc PP |
4106 | /* Build a partial symbol table. */ |
4107 | ||
4108 | void | |
f29dff0a | 4109 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4110 | { |
c9bf0622 TT |
4111 | volatile struct gdb_exception except; |
4112 | ||
f29dff0a | 4113 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4114 | { |
4115 | init_psymbol_list (objfile, 1024); | |
4116 | } | |
4117 | ||
c9bf0622 TT |
4118 | TRY_CATCH (except, RETURN_MASK_ERROR) |
4119 | { | |
4120 | /* This isn't really ideal: all the data we allocate on the | |
4121 | objfile's obstack is still uselessly kept around. However, | |
4122 | freeing it seems unsafe. */ | |
4123 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4124 | ||
4125 | dwarf2_build_psymtabs_hard (objfile); | |
4126 | discard_cleanups (cleanups); | |
4127 | } | |
4128 | if (except.reason < 0) | |
4129 | exception_print (gdb_stderr, except); | |
c906108c | 4130 | } |
c906108c | 4131 | |
1ce1cefd DE |
4132 | /* Return the total length of the CU described by HEADER. */ |
4133 | ||
4134 | static unsigned int | |
4135 | get_cu_length (const struct comp_unit_head *header) | |
4136 | { | |
4137 | return header->initial_length_size + header->length; | |
4138 | } | |
4139 | ||
45452591 DE |
4140 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4141 | ||
4142 | static inline int | |
b64f50a1 | 4143 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4144 | { |
b64f50a1 | 4145 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4146 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4147 | |
b64f50a1 | 4148 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4149 | } |
4150 | ||
3b80fe9b DE |
4151 | /* Find the base address of the compilation unit for range lists and |
4152 | location lists. It will normally be specified by DW_AT_low_pc. | |
4153 | In DWARF-3 draft 4, the base address could be overridden by | |
4154 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4155 | compilation units with discontinuous ranges. */ | |
4156 | ||
4157 | static void | |
4158 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4159 | { | |
4160 | struct attribute *attr; | |
4161 | ||
4162 | cu->base_known = 0; | |
4163 | cu->base_address = 0; | |
4164 | ||
4165 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4166 | if (attr) | |
4167 | { | |
4168 | cu->base_address = DW_ADDR (attr); | |
4169 | cu->base_known = 1; | |
4170 | } | |
4171 | else | |
4172 | { | |
4173 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4174 | if (attr) | |
4175 | { | |
4176 | cu->base_address = DW_ADDR (attr); | |
4177 | cu->base_known = 1; | |
4178 | } | |
4179 | } | |
4180 | } | |
4181 | ||
93311388 DE |
4182 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4183 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4184 | by the caller. */ | |
107d2387 | 4185 | |
d521ce57 | 4186 | static const gdb_byte * |
107d2387 | 4187 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4188 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4189 | { |
4190 | int signed_addr; | |
891d2f0b | 4191 | unsigned int bytes_read; |
c764a876 DE |
4192 | |
4193 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4194 | cu_header->initial_length_size = bytes_read; | |
4195 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4196 | info_ptr += bytes_read; |
107d2387 AC |
4197 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4198 | info_ptr += 2; | |
b64f50a1 JK |
4199 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4200 | &bytes_read); | |
613e1657 | 4201 | info_ptr += bytes_read; |
107d2387 AC |
4202 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4203 | info_ptr += 1; | |
4204 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4205 | if (signed_addr < 0) | |
8e65ff28 | 4206 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4207 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4208 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4209 | |
107d2387 AC |
4210 | return info_ptr; |
4211 | } | |
4212 | ||
36586728 TT |
4213 | /* Helper function that returns the proper abbrev section for |
4214 | THIS_CU. */ | |
4215 | ||
4216 | static struct dwarf2_section_info * | |
4217 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4218 | { | |
4219 | struct dwarf2_section_info *abbrev; | |
4220 | ||
4221 | if (this_cu->is_dwz) | |
4222 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4223 | else | |
4224 | abbrev = &dwarf2_per_objfile->abbrev; | |
4225 | ||
4226 | return abbrev; | |
4227 | } | |
4228 | ||
9ff913ba DE |
4229 | /* Subroutine of read_and_check_comp_unit_head and |
4230 | read_and_check_type_unit_head to simplify them. | |
4231 | Perform various error checking on the header. */ | |
4232 | ||
4233 | static void | |
4234 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4235 | struct dwarf2_section_info *section, |
4236 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4237 | { |
a32a8923 DE |
4238 | bfd *abfd = get_section_bfd_owner (section); |
4239 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4240 | |
4241 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4242 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4243 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4244 | filename); | |
4245 | ||
b64f50a1 | 4246 | if (header->abbrev_offset.sect_off |
36586728 | 4247 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4248 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4249 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4250 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4251 | filename); |
4252 | ||
4253 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4254 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4255 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4256 | > section->size) |
4257 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4258 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4259 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4260 | filename); |
4261 | } | |
4262 | ||
4263 | /* Read in a CU/TU header and perform some basic error checking. | |
4264 | The contents of the header are stored in HEADER. | |
4265 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4266 | |
d521ce57 | 4267 | static const gdb_byte * |
9ff913ba DE |
4268 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4269 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4270 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4271 | const gdb_byte *info_ptr, |
9ff913ba | 4272 | int is_debug_types_section) |
72bf9492 | 4273 | { |
d521ce57 | 4274 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4275 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4276 | |
b64f50a1 | 4277 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4278 | |
72bf9492 DJ |
4279 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4280 | ||
460c1c54 CC |
4281 | /* If we're reading a type unit, skip over the signature and |
4282 | type_offset fields. */ | |
b0df02fd | 4283 | if (is_debug_types_section) |
460c1c54 CC |
4284 | info_ptr += 8 /*signature*/ + header->offset_size; |
4285 | ||
b64f50a1 | 4286 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4287 | |
4bdcc0c1 | 4288 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4289 | |
4290 | return info_ptr; | |
4291 | } | |
4292 | ||
348e048f DE |
4293 | /* Read in the types comp unit header information from .debug_types entry at |
4294 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4295 | ||
d521ce57 | 4296 | static const gdb_byte * |
9ff913ba DE |
4297 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4298 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4299 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4300 | const gdb_byte *info_ptr, |
dee91e82 DE |
4301 | ULONGEST *signature, |
4302 | cu_offset *type_offset_in_tu) | |
348e048f | 4303 | { |
d521ce57 | 4304 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4305 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4306 | |
b64f50a1 | 4307 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4308 | |
9ff913ba | 4309 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4310 | |
9ff913ba DE |
4311 | /* If we're reading a type unit, skip over the signature and |
4312 | type_offset fields. */ | |
4313 | if (signature != NULL) | |
4314 | *signature = read_8_bytes (abfd, info_ptr); | |
4315 | info_ptr += 8; | |
dee91e82 DE |
4316 | if (type_offset_in_tu != NULL) |
4317 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4318 | header->offset_size); | |
9ff913ba DE |
4319 | info_ptr += header->offset_size; |
4320 | ||
b64f50a1 | 4321 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4322 | |
4bdcc0c1 | 4323 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4324 | |
4325 | return info_ptr; | |
348e048f DE |
4326 | } |
4327 | ||
f4dc4d17 DE |
4328 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4329 | ||
4330 | static sect_offset | |
4331 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4332 | sect_offset offset) | |
4333 | { | |
a32a8923 | 4334 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4335 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4336 | unsigned int length, initial_length_size, offset_size; |
4337 | sect_offset abbrev_offset; | |
4338 | ||
4339 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4340 | info_ptr = section->buffer + offset.sect_off; | |
4341 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4342 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4343 | info_ptr += initial_length_size + 2 /*version*/; | |
4344 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4345 | return abbrev_offset; | |
4346 | } | |
4347 | ||
aaa75496 JB |
4348 | /* Allocate a new partial symtab for file named NAME and mark this new |
4349 | partial symtab as being an include of PST. */ | |
4350 | ||
4351 | static void | |
d521ce57 | 4352 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4353 | struct objfile *objfile) |
4354 | { | |
4355 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4356 | ||
fbd9ab74 JK |
4357 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4358 | { | |
4359 | /* It shares objfile->objfile_obstack. */ | |
4360 | subpst->dirname = pst->dirname; | |
4361 | } | |
4362 | ||
aaa75496 JB |
4363 | subpst->section_offsets = pst->section_offsets; |
4364 | subpst->textlow = 0; | |
4365 | subpst->texthigh = 0; | |
4366 | ||
4367 | subpst->dependencies = (struct partial_symtab **) | |
4368 | obstack_alloc (&objfile->objfile_obstack, | |
4369 | sizeof (struct partial_symtab *)); | |
4370 | subpst->dependencies[0] = pst; | |
4371 | subpst->number_of_dependencies = 1; | |
4372 | ||
4373 | subpst->globals_offset = 0; | |
4374 | subpst->n_global_syms = 0; | |
4375 | subpst->statics_offset = 0; | |
4376 | subpst->n_static_syms = 0; | |
4377 | subpst->symtab = NULL; | |
4378 | subpst->read_symtab = pst->read_symtab; | |
4379 | subpst->readin = 0; | |
4380 | ||
4381 | /* No private part is necessary for include psymtabs. This property | |
4382 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4383 | the regular ones. */ |
58a9656e | 4384 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4385 | } |
4386 | ||
4387 | /* Read the Line Number Program data and extract the list of files | |
4388 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4389 | partial symtab for each of these included files. */ |
aaa75496 JB |
4390 | |
4391 | static void | |
4392 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4393 | struct die_info *die, |
4394 | struct partial_symtab *pst) | |
aaa75496 | 4395 | { |
d85a05f0 DJ |
4396 | struct line_header *lh = NULL; |
4397 | struct attribute *attr; | |
aaa75496 | 4398 | |
d85a05f0 DJ |
4399 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4400 | if (attr) | |
3019eac3 | 4401 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4402 | if (lh == NULL) |
4403 | return; /* No linetable, so no includes. */ | |
4404 | ||
c6da4cef | 4405 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4406 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4407 | |
4408 | free_line_header (lh); | |
4409 | } | |
4410 | ||
348e048f | 4411 | static hashval_t |
52dc124a | 4412 | hash_signatured_type (const void *item) |
348e048f | 4413 | { |
52dc124a | 4414 | const struct signatured_type *sig_type = item; |
9a619af0 | 4415 | |
348e048f | 4416 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4417 | return sig_type->signature; |
348e048f DE |
4418 | } |
4419 | ||
4420 | static int | |
52dc124a | 4421 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4422 | { |
4423 | const struct signatured_type *lhs = item_lhs; | |
4424 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4425 | |
348e048f DE |
4426 | return lhs->signature == rhs->signature; |
4427 | } | |
4428 | ||
1fd400ff TT |
4429 | /* Allocate a hash table for signatured types. */ |
4430 | ||
4431 | static htab_t | |
673bfd45 | 4432 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4433 | { |
4434 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4435 | hash_signatured_type, |
4436 | eq_signatured_type, | |
1fd400ff TT |
4437 | NULL, |
4438 | &objfile->objfile_obstack, | |
4439 | hashtab_obstack_allocate, | |
4440 | dummy_obstack_deallocate); | |
4441 | } | |
4442 | ||
d467dd73 | 4443 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4444 | |
4445 | static int | |
d467dd73 | 4446 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4447 | { |
4448 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4449 | struct signatured_type ***datap = datum; |
1fd400ff | 4450 | |
b4dd5633 | 4451 | **datap = sigt; |
1fd400ff TT |
4452 | ++*datap; |
4453 | ||
4454 | return 1; | |
4455 | } | |
4456 | ||
c88ee1f0 DE |
4457 | /* Create the hash table of all entries in the .debug_types |
4458 | (or .debug_types.dwo) section(s). | |
4459 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4460 | otherwise it is NULL. | |
4461 | ||
4462 | The result is a pointer to the hash table or NULL if there are no types. | |
4463 | ||
4464 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4465 | |
3019eac3 DE |
4466 | static htab_t |
4467 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4468 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4469 | { |
3019eac3 | 4470 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4471 | htab_t types_htab = NULL; |
8b70b953 TT |
4472 | int ix; |
4473 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4474 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4475 | |
3019eac3 DE |
4476 | if (VEC_empty (dwarf2_section_info_def, types)) |
4477 | return NULL; | |
348e048f | 4478 | |
4bdcc0c1 DE |
4479 | abbrev_section = (dwo_file != NULL |
4480 | ? &dwo_file->sections.abbrev | |
4481 | : &dwarf2_per_objfile->abbrev); | |
4482 | ||
09406207 DE |
4483 | if (dwarf2_read_debug) |
4484 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4485 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4486 | get_section_file_name (abbrev_section)); |
09406207 | 4487 | |
8b70b953 | 4488 | for (ix = 0; |
3019eac3 | 4489 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4490 | ++ix) |
4491 | { | |
3019eac3 | 4492 | bfd *abfd; |
d521ce57 | 4493 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4494 | |
8b70b953 TT |
4495 | dwarf2_read_section (objfile, section); |
4496 | info_ptr = section->buffer; | |
348e048f | 4497 | |
8b70b953 TT |
4498 | if (info_ptr == NULL) |
4499 | continue; | |
348e048f | 4500 | |
3019eac3 | 4501 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4502 | not present, in which case the bfd is unknown. */ |
4503 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4504 | |
dee91e82 DE |
4505 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4506 | because we don't need to read any dies: the signature is in the | |
4507 | header. */ | |
8b70b953 TT |
4508 | |
4509 | end_ptr = info_ptr + section->size; | |
4510 | while (info_ptr < end_ptr) | |
4511 | { | |
b64f50a1 | 4512 | sect_offset offset; |
3019eac3 | 4513 | cu_offset type_offset_in_tu; |
8b70b953 | 4514 | ULONGEST signature; |
52dc124a | 4515 | struct signatured_type *sig_type; |
3019eac3 | 4516 | struct dwo_unit *dwo_tu; |
8b70b953 | 4517 | void **slot; |
d521ce57 | 4518 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4519 | struct comp_unit_head header; |
dee91e82 | 4520 | unsigned int length; |
348e048f | 4521 | |
b64f50a1 | 4522 | offset.sect_off = ptr - section->buffer; |
348e048f | 4523 | |
8b70b953 | 4524 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4525 | table, but we don't need anything else just yet. */ |
348e048f | 4526 | |
4bdcc0c1 DE |
4527 | ptr = read_and_check_type_unit_head (&header, section, |
4528 | abbrev_section, ptr, | |
3019eac3 | 4529 | &signature, &type_offset_in_tu); |
6caca83c | 4530 | |
1ce1cefd | 4531 | length = get_cu_length (&header); |
dee91e82 | 4532 | |
6caca83c | 4533 | /* Skip dummy type units. */ |
dee91e82 DE |
4534 | if (ptr >= info_ptr + length |
4535 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4536 | { |
1ce1cefd | 4537 | info_ptr += length; |
6caca83c CC |
4538 | continue; |
4539 | } | |
8b70b953 | 4540 | |
0349ea22 DE |
4541 | if (types_htab == NULL) |
4542 | { | |
4543 | if (dwo_file) | |
4544 | types_htab = allocate_dwo_unit_table (objfile); | |
4545 | else | |
4546 | types_htab = allocate_signatured_type_table (objfile); | |
4547 | } | |
4548 | ||
3019eac3 DE |
4549 | if (dwo_file) |
4550 | { | |
4551 | sig_type = NULL; | |
4552 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4553 | struct dwo_unit); | |
4554 | dwo_tu->dwo_file = dwo_file; | |
4555 | dwo_tu->signature = signature; | |
4556 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4557 | dwo_tu->section = section; |
3019eac3 DE |
4558 | dwo_tu->offset = offset; |
4559 | dwo_tu->length = length; | |
4560 | } | |
4561 | else | |
4562 | { | |
4563 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4564 | The real type_offset is in the DWO file. */ | |
4565 | dwo_tu = NULL; | |
4566 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4567 | struct signatured_type); | |
4568 | sig_type->signature = signature; | |
4569 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4570 | sig_type->per_cu.objfile = objfile; | |
4571 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4572 | sig_type->per_cu.section = section; |
3019eac3 DE |
4573 | sig_type->per_cu.offset = offset; |
4574 | sig_type->per_cu.length = length; | |
4575 | } | |
8b70b953 | 4576 | |
3019eac3 DE |
4577 | slot = htab_find_slot (types_htab, |
4578 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4579 | INSERT); | |
8b70b953 TT |
4580 | gdb_assert (slot != NULL); |
4581 | if (*slot != NULL) | |
4582 | { | |
3019eac3 DE |
4583 | sect_offset dup_offset; |
4584 | ||
4585 | if (dwo_file) | |
4586 | { | |
4587 | const struct dwo_unit *dup_tu = *slot; | |
4588 | ||
4589 | dup_offset = dup_tu->offset; | |
4590 | } | |
4591 | else | |
4592 | { | |
4593 | const struct signatured_type *dup_tu = *slot; | |
4594 | ||
4595 | dup_offset = dup_tu->per_cu.offset; | |
4596 | } | |
b3c8eb43 | 4597 | |
8b70b953 | 4598 | complaint (&symfile_complaints, |
c88ee1f0 | 4599 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4600 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4601 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4602 | hex_string (signature)); |
8b70b953 | 4603 | } |
3019eac3 | 4604 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4605 | |
09406207 | 4606 | if (dwarf2_read_debug) |
4031ecc5 | 4607 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4608 | offset.sect_off, |
4031ecc5 | 4609 | hex_string (signature)); |
348e048f | 4610 | |
dee91e82 | 4611 | info_ptr += length; |
8b70b953 | 4612 | } |
348e048f DE |
4613 | } |
4614 | ||
3019eac3 DE |
4615 | return types_htab; |
4616 | } | |
4617 | ||
4618 | /* Create the hash table of all entries in the .debug_types section, | |
4619 | and initialize all_type_units. | |
4620 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4621 | otherwise non-zero. */ | |
4622 | ||
4623 | static int | |
4624 | create_all_type_units (struct objfile *objfile) | |
4625 | { | |
4626 | htab_t types_htab; | |
b4dd5633 | 4627 | struct signatured_type **iter; |
3019eac3 DE |
4628 | |
4629 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4630 | if (types_htab == NULL) | |
4631 | { | |
4632 | dwarf2_per_objfile->signatured_types = NULL; | |
4633 | return 0; | |
4634 | } | |
4635 | ||
348e048f DE |
4636 | dwarf2_per_objfile->signatured_types = types_htab; |
4637 | ||
d467dd73 DE |
4638 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4639 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
4640 | = xmalloc (dwarf2_per_objfile->n_type_units |
4641 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4642 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4643 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4644 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4645 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4646 | |
348e048f DE |
4647 | return 1; |
4648 | } | |
4649 | ||
a2ce51a0 DE |
4650 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4651 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4652 | ||
4653 | static void | |
4654 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4655 | struct signatured_type *sig_entry, | |
4656 | struct dwo_unit *dwo_entry) | |
4657 | { | |
7ee85ab1 | 4658 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4659 | gdb_assert (! sig_entry->per_cu.queued); |
4660 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
4661 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
4662 | gdb_assert (sig_entry->per_cu.v.quick->symtab == NULL); | |
4663 | gdb_assert (sig_entry->signature == dwo_entry->signature); | |
4664 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4665 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4666 | gdb_assert (sig_entry->dwo_unit == NULL); |
4667 | ||
4668 | sig_entry->per_cu.section = dwo_entry->section; | |
4669 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4670 | sig_entry->per_cu.length = dwo_entry->length; | |
4671 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4672 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4673 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4674 | sig_entry->dwo_unit = dwo_entry; | |
4675 | } | |
4676 | ||
4677 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4678 | If we haven't read the TU yet, create the signatured_type data structure |
4679 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4680 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4681 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4682 | containing that CU. Otherwise we could end up reading several other DWO | |
4683 | files (due to comdat folding) to process the transitive closure of all the | |
4684 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4685 | type signature that it needs. | |
a2ce51a0 DE |
4686 | We only do this for .gdb_index because in the psymtab case we already have |
4687 | to read all the DWOs to build the type unit groups. */ | |
4688 | ||
4689 | static struct signatured_type * | |
4690 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4691 | { | |
4692 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4693 | struct dwo_file *dwo_file; | |
4694 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4695 | struct signatured_type find_sig_entry, *sig_entry; | |
4696 | ||
4697 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4698 | ||
4699 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the | |
4700 | dwo_unit of the TU itself. */ | |
4701 | dwo_file = cu->dwo_unit->dwo_file; | |
4702 | ||
4703 | /* We only ever need to read in one copy of a signatured type. | |
4704 | Just use the global signatured_types array. If this is the first time | |
4705 | we're reading this type, replace the recorded data from .gdb_index with | |
4706 | this TU. */ | |
4707 | ||
4708 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4709 | return NULL; | |
4710 | find_sig_entry.signature = sig; | |
4711 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, &find_sig_entry); | |
4712 | if (sig_entry == NULL) | |
4713 | return NULL; | |
7ee85ab1 DE |
4714 | |
4715 | /* We can get here with the TU already read, *or* in the process of being | |
4716 | read. Don't reassign it if that's the case. Also note that if the TU is | |
4717 | already being read, it may not have come from a DWO, the program may be | |
4718 | a mix of Fission-compiled code and non-Fission-compiled code. */ | |
a2ce51a0 | 4719 | /* Have we already tried to read this TU? */ |
7ee85ab1 | 4720 | if (sig_entry->per_cu.tu_read) |
a2ce51a0 DE |
4721 | return sig_entry; |
4722 | ||
4723 | /* Ok, this is the first time we're reading this TU. */ | |
4724 | if (dwo_file->tus == NULL) | |
4725 | return NULL; | |
4726 | find_dwo_entry.signature = sig; | |
4727 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4728 | if (dwo_entry == NULL) | |
4729 | return NULL; | |
4730 | ||
4731 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
89e63ee4 | 4732 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4733 | return sig_entry; |
4734 | } | |
4735 | ||
4736 | /* Subroutine of lookup_dwp_signatured_type. | |
4737 | Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. */ | |
4738 | ||
4739 | static struct signatured_type * | |
4740 | add_type_unit (ULONGEST sig) | |
4741 | { | |
4742 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4743 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4744 | struct signatured_type *sig_type; | |
4745 | void **slot; | |
4746 | ||
4747 | ++n_type_units; | |
4748 | dwarf2_per_objfile->all_type_units = | |
4749 | xrealloc (dwarf2_per_objfile->all_type_units, | |
4750 | n_type_units * sizeof (struct signatured_type *)); | |
4751 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4752 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4753 | struct signatured_type); | |
4754 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4755 | sig_type->signature = sig; | |
4756 | sig_type->per_cu.is_debug_types = 1; | |
4757 | sig_type->per_cu.v.quick = | |
4758 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4759 | struct dwarf2_per_cu_quick_data); | |
4760 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4761 | sig_type, INSERT); | |
4762 | gdb_assert (*slot == NULL); | |
4763 | *slot = sig_type; | |
4764 | /* The rest of sig_type must be filled in by the caller. */ | |
4765 | return sig_type; | |
4766 | } | |
4767 | ||
4768 | /* Subroutine of lookup_signatured_type. | |
4769 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
4770 | then try the DWP file. | |
4771 | Normally this "can't happen", but if there's a bug in signature | |
4772 | generation and/or the DWP file is built incorrectly, it can happen. | |
4773 | Using the type directly from the DWP file means we don't have the stub | |
4774 | which has some useful attributes (e.g., DW_AT_comp_dir), but they're | |
4775 | not critical. [Eventually the stub may go away for type units anyway.] */ | |
4776 | ||
4777 | static struct signatured_type * | |
4778 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4779 | { | |
4780 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4781 | struct dwp_file *dwp_file = get_dwp_file (); | |
4782 | struct dwo_unit *dwo_entry; | |
4783 | struct signatured_type find_sig_entry, *sig_entry; | |
4784 | ||
4785 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4786 | gdb_assert (dwp_file != NULL); | |
4787 | ||
4788 | if (dwarf2_per_objfile->signatured_types != NULL) | |
4789 | { | |
4790 | find_sig_entry.signature = sig; | |
4791 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, | |
4792 | &find_sig_entry); | |
4793 | if (sig_entry != NULL) | |
4794 | return sig_entry; | |
4795 | } | |
4796 | ||
4797 | /* This is the "shouldn't happen" case. | |
4798 | Try the DWP file and hope for the best. */ | |
4799 | if (dwp_file->tus == NULL) | |
4800 | return NULL; | |
57d63ce2 DE |
4801 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4802 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4803 | if (dwo_entry == NULL) |
4804 | return NULL; | |
4805 | ||
4806 | sig_entry = add_type_unit (sig); | |
4807 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
4808 | ||
4809 | /* The caller will signal a complaint if we return NULL. | |
4810 | Here we don't return NULL but we still want to complain. */ | |
4811 | complaint (&symfile_complaints, | |
4812 | _("Bad type signature %s referenced by %s at 0x%x," | |
4813 | " coping by using copy in DWP [in module %s]"), | |
4814 | hex_string (sig), | |
4815 | cu->per_cu->is_debug_types ? "TU" : "CU", | |
4816 | cu->per_cu->offset.sect_off, | |
4262abfb | 4817 | objfile_name (objfile)); |
a2ce51a0 DE |
4818 | |
4819 | return sig_entry; | |
4820 | } | |
4821 | ||
380bca97 | 4822 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4823 | Returns NULL if signature SIG is not present in the table. |
4824 | It is up to the caller to complain about this. */ | |
348e048f DE |
4825 | |
4826 | static struct signatured_type * | |
a2ce51a0 | 4827 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4828 | { |
a2ce51a0 DE |
4829 | if (cu->dwo_unit |
4830 | && dwarf2_per_objfile->using_index) | |
4831 | { | |
4832 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4833 | These cases require special processing. */ | |
4834 | if (get_dwp_file () == NULL) | |
4835 | return lookup_dwo_signatured_type (cu, sig); | |
4836 | else | |
4837 | return lookup_dwp_signatured_type (cu, sig); | |
4838 | } | |
4839 | else | |
4840 | { | |
4841 | struct signatured_type find_entry, *entry; | |
348e048f | 4842 | |
a2ce51a0 DE |
4843 | if (dwarf2_per_objfile->signatured_types == NULL) |
4844 | return NULL; | |
4845 | find_entry.signature = sig; | |
4846 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4847 | return entry; | |
4848 | } | |
348e048f | 4849 | } |
42e7ad6c DE |
4850 | \f |
4851 | /* Low level DIE reading support. */ | |
348e048f | 4852 | |
d85a05f0 DJ |
4853 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4854 | ||
4855 | static void | |
4856 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4857 | struct dwarf2_cu *cu, |
3019eac3 DE |
4858 | struct dwarf2_section_info *section, |
4859 | struct dwo_file *dwo_file) | |
d85a05f0 | 4860 | { |
fceca515 | 4861 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 4862 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 4863 | reader->cu = cu; |
3019eac3 | 4864 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4865 | reader->die_section = section; |
4866 | reader->buffer = section->buffer; | |
f664829e | 4867 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 4868 | reader->comp_dir = NULL; |
d85a05f0 DJ |
4869 | } |
4870 | ||
b0c7bfa9 DE |
4871 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
4872 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
4873 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
4874 | already. | |
4875 | ||
4876 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
4877 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
4878 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
4879 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
4880 | attribute of the referencing CU. Exactly one of STUB_COMP_UNIT_DIE and | |
4881 | COMP_DIR must be non-NULL. | |
b0c7bfa9 DE |
4882 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
4883 | are filled in with the info of the DIE from the DWO file. | |
4884 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
4885 | provided an abbrev table to use. | |
4886 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
4887 | ||
4888 | static int | |
4889 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
4890 | struct dwo_unit *dwo_unit, | |
4891 | int abbrev_table_provided, | |
4892 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 4893 | const char *stub_comp_dir, |
b0c7bfa9 | 4894 | struct die_reader_specs *result_reader, |
d521ce57 | 4895 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
4896 | struct die_info **result_comp_unit_die, |
4897 | int *result_has_children) | |
4898 | { | |
4899 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4900 | struct dwarf2_cu *cu = this_cu->cu; | |
4901 | struct dwarf2_section_info *section; | |
4902 | bfd *abfd; | |
d521ce57 | 4903 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
4904 | const char *comp_dir_string; |
4905 | ULONGEST signature; /* Or dwo_id. */ | |
4906 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
4907 | int i,num_extra_attrs; | |
4908 | struct dwarf2_section_info *dwo_abbrev_section; | |
4909 | struct attribute *attr; | |
a2ce51a0 | 4910 | struct attribute comp_dir_attr; |
b0c7bfa9 DE |
4911 | struct die_info *comp_unit_die; |
4912 | ||
a2ce51a0 DE |
4913 | /* Both can't be provided. */ |
4914 | gdb_assert (! (stub_comp_unit_die && stub_comp_dir)); | |
4915 | ||
b0c7bfa9 DE |
4916 | /* These attributes aren't processed until later: |
4917 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4918 | However, the attribute is found in the stub which we won't have later. | |
4919 | In order to not impose this complication on the rest of the code, | |
4920 | we read them here and copy them to the DWO CU/TU die. */ | |
4921 | ||
4922 | stmt_list = NULL; | |
4923 | low_pc = NULL; | |
4924 | high_pc = NULL; | |
4925 | ranges = NULL; | |
4926 | comp_dir = NULL; | |
4927 | ||
4928 | if (stub_comp_unit_die != NULL) | |
4929 | { | |
4930 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4931 | DWO file. */ | |
4932 | if (! this_cu->is_debug_types) | |
4933 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
4934 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
4935 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
4936 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
4937 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
4938 | ||
4939 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4940 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4941 | cu->addr_base = 0; | |
4942 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
4943 | if (attr) | |
4944 | cu->addr_base = DW_UNSND (attr); | |
4945 | ||
4946 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4947 | We need the value before we can process DW_AT_ranges. */ | |
4948 | cu->ranges_base = 0; | |
4949 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4950 | if (attr) | |
4951 | cu->ranges_base = DW_UNSND (attr); | |
4952 | } | |
a2ce51a0 DE |
4953 | else if (stub_comp_dir != NULL) |
4954 | { | |
4955 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
4956 | comp_dir = (struct attribute *) | |
4957 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
4958 | comp_dir->name = DW_AT_comp_dir; | |
4959 | comp_dir->form = DW_FORM_string; | |
4960 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
4961 | DW_STRING (comp_dir) = stub_comp_dir; | |
4962 | } | |
b0c7bfa9 DE |
4963 | |
4964 | /* Set up for reading the DWO CU/TU. */ | |
4965 | cu->dwo_unit = dwo_unit; | |
4966 | section = dwo_unit->section; | |
4967 | dwarf2_read_section (objfile, section); | |
a32a8923 | 4968 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
4969 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
4970 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
4971 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
4972 | ||
4973 | if (this_cu->is_debug_types) | |
4974 | { | |
4975 | ULONGEST header_signature; | |
4976 | cu_offset type_offset_in_tu; | |
4977 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
4978 | ||
4979 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
4980 | dwo_abbrev_section, | |
4981 | info_ptr, | |
4982 | &header_signature, | |
4983 | &type_offset_in_tu); | |
a2ce51a0 DE |
4984 | /* This is not an assert because it can be caused by bad debug info. */ |
4985 | if (sig_type->signature != header_signature) | |
4986 | { | |
4987 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
4988 | " TU at offset 0x%x [in module %s]"), | |
4989 | hex_string (sig_type->signature), | |
4990 | hex_string (header_signature), | |
4991 | dwo_unit->offset.sect_off, | |
4992 | bfd_get_filename (abfd)); | |
4993 | } | |
b0c7bfa9 DE |
4994 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
4995 | /* For DWOs coming from DWP files, we don't know the CU length | |
4996 | nor the type's offset in the TU until now. */ | |
4997 | dwo_unit->length = get_cu_length (&cu->header); | |
4998 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
4999 | ||
5000 | /* Establish the type offset that can be used to lookup the type. | |
5001 | For DWO files, we don't know it until now. */ | |
5002 | sig_type->type_offset_in_section.sect_off = | |
5003 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5004 | } | |
5005 | else | |
5006 | { | |
5007 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5008 | dwo_abbrev_section, | |
5009 | info_ptr, 0); | |
5010 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5011 | /* For DWOs coming from DWP files, we don't know the CU length | |
5012 | until now. */ | |
5013 | dwo_unit->length = get_cu_length (&cu->header); | |
5014 | } | |
5015 | ||
02142a6c DE |
5016 | /* Replace the CU's original abbrev table with the DWO's. |
5017 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5018 | if (abbrev_table_provided) |
5019 | { | |
5020 | /* Don't free the provided abbrev table, the caller of | |
5021 | init_cutu_and_read_dies owns it. */ | |
5022 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5023 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5024 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5025 | } | |
5026 | else | |
5027 | { | |
5028 | dwarf2_free_abbrev_table (cu); | |
5029 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5030 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5031 | } |
5032 | ||
5033 | /* Read in the die, but leave space to copy over the attributes | |
5034 | from the stub. This has the benefit of simplifying the rest of | |
5035 | the code - all the work to maintain the illusion of a single | |
5036 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5037 | num_extra_attrs = ((stmt_list != NULL) | |
5038 | + (low_pc != NULL) | |
5039 | + (high_pc != NULL) | |
5040 | + (ranges != NULL) | |
5041 | + (comp_dir != NULL)); | |
5042 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5043 | result_has_children, num_extra_attrs); | |
5044 | ||
5045 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5046 | comp_unit_die = *result_comp_unit_die; | |
5047 | i = comp_unit_die->num_attrs; | |
5048 | if (stmt_list != NULL) | |
5049 | comp_unit_die->attrs[i++] = *stmt_list; | |
5050 | if (low_pc != NULL) | |
5051 | comp_unit_die->attrs[i++] = *low_pc; | |
5052 | if (high_pc != NULL) | |
5053 | comp_unit_die->attrs[i++] = *high_pc; | |
5054 | if (ranges != NULL) | |
5055 | comp_unit_die->attrs[i++] = *ranges; | |
5056 | if (comp_dir != NULL) | |
5057 | comp_unit_die->attrs[i++] = *comp_dir; | |
5058 | comp_unit_die->num_attrs += num_extra_attrs; | |
5059 | ||
bf6af496 DE |
5060 | if (dwarf2_die_debug) |
5061 | { | |
5062 | fprintf_unfiltered (gdb_stdlog, | |
5063 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5064 | get_section_name (section), |
bf6af496 DE |
5065 | (unsigned) (begin_info_ptr - section->buffer), |
5066 | bfd_get_filename (abfd)); | |
5067 | dump_die (comp_unit_die, dwarf2_die_debug); | |
5068 | } | |
5069 | ||
a2ce51a0 DE |
5070 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5071 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5072 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5073 | to get it via circuitous means. Blech. */ | |
5074 | if (comp_dir != NULL) | |
5075 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5076 | ||
b0c7bfa9 DE |
5077 | /* Skip dummy compilation units. */ |
5078 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5079 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5080 | return 0; | |
5081 | ||
5082 | *result_info_ptr = info_ptr; | |
5083 | return 1; | |
5084 | } | |
5085 | ||
5086 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5087 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5088 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5089 | |
5090 | static struct dwo_unit * | |
5091 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5092 | struct die_info *comp_unit_die) | |
5093 | { | |
5094 | struct dwarf2_cu *cu = this_cu->cu; | |
5095 | struct attribute *attr; | |
5096 | ULONGEST signature; | |
5097 | struct dwo_unit *dwo_unit; | |
5098 | const char *comp_dir, *dwo_name; | |
5099 | ||
a2ce51a0 DE |
5100 | gdb_assert (cu != NULL); |
5101 | ||
b0c7bfa9 DE |
5102 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5103 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5104 | gdb_assert (attr != NULL); | |
5105 | dwo_name = DW_STRING (attr); | |
5106 | comp_dir = NULL; | |
5107 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5108 | if (attr) | |
5109 | comp_dir = DW_STRING (attr); | |
5110 | ||
5111 | if (this_cu->is_debug_types) | |
5112 | { | |
5113 | struct signatured_type *sig_type; | |
5114 | ||
5115 | /* Since this_cu is the first member of struct signatured_type, | |
5116 | we can go from a pointer to one to a pointer to the other. */ | |
5117 | sig_type = (struct signatured_type *) this_cu; | |
5118 | signature = sig_type->signature; | |
5119 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5120 | } | |
5121 | else | |
5122 | { | |
5123 | struct attribute *attr; | |
5124 | ||
5125 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5126 | if (! attr) | |
5127 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5128 | " [in module %s]"), | |
4262abfb | 5129 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5130 | signature = DW_UNSND (attr); |
5131 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5132 | signature); | |
5133 | } | |
5134 | ||
b0c7bfa9 DE |
5135 | return dwo_unit; |
5136 | } | |
5137 | ||
a2ce51a0 DE |
5138 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5139 | Read a TU directly from a DWO file, bypassing the stub. */ | |
5140 | ||
5141 | static void | |
5142 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, int keep, | |
5143 | die_reader_func_ftype *die_reader_func, | |
5144 | void *data) | |
5145 | { | |
5146 | struct dwarf2_cu *cu; | |
5147 | struct signatured_type *sig_type; | |
5148 | struct cleanup *cleanups, *free_cu_cleanup; | |
5149 | struct die_reader_specs reader; | |
5150 | const gdb_byte *info_ptr; | |
5151 | struct die_info *comp_unit_die; | |
5152 | int has_children; | |
5153 | ||
5154 | /* Verify we can do the following downcast, and that we have the | |
5155 | data we need. */ | |
5156 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5157 | sig_type = (struct signatured_type *) this_cu; | |
5158 | gdb_assert (sig_type->dwo_unit != NULL); | |
5159 | ||
5160 | cleanups = make_cleanup (null_cleanup, NULL); | |
5161 | ||
5162 | gdb_assert (this_cu->cu == NULL); | |
5163 | cu = xmalloc (sizeof (*cu)); | |
5164 | init_one_comp_unit (cu, this_cu); | |
5165 | /* If an error occurs while loading, release our storage. */ | |
5166 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5167 | ||
5168 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5169 | 0 /* abbrev_table_provided */, | |
5170 | NULL /* stub_comp_unit_die */, | |
5171 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5172 | &reader, &info_ptr, | |
5173 | &comp_unit_die, &has_children) == 0) | |
5174 | { | |
5175 | /* Dummy die. */ | |
5176 | do_cleanups (cleanups); | |
5177 | return; | |
5178 | } | |
5179 | ||
5180 | /* All the "real" work is done here. */ | |
5181 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5182 | ||
5183 | /* This duplicates some code in init_cutu_and_read_dies, | |
5184 | but the alternative is making the latter more complex. | |
5185 | This function is only for the special case of using DWO files directly: | |
5186 | no point in overly complicating the general case just to handle this. */ | |
5187 | if (keep) | |
5188 | { | |
5189 | /* We've successfully allocated this compilation unit. Let our | |
5190 | caller clean it up when finished with it. */ | |
5191 | discard_cleanups (free_cu_cleanup); | |
5192 | ||
5193 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
5194 | So we have to manually free the abbrev table. */ | |
5195 | dwarf2_free_abbrev_table (cu); | |
5196 | ||
5197 | /* Link this CU into read_in_chain. */ | |
5198 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5199 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5200 | } | |
5201 | else | |
5202 | do_cleanups (free_cu_cleanup); | |
5203 | ||
5204 | do_cleanups (cleanups); | |
5205 | } | |
5206 | ||
fd820528 | 5207 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5208 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5209 | |
f4dc4d17 DE |
5210 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5211 | Otherwise the table specified in the comp unit header is read in and used. | |
5212 | This is an optimization for when we already have the abbrev table. | |
5213 | ||
dee91e82 DE |
5214 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5215 | Otherwise, a new CU is allocated with xmalloc. | |
5216 | ||
5217 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5218 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5219 | ||
5220 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5221 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5222 | |
70221824 | 5223 | static void |
fd820528 | 5224 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5225 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5226 | int use_existing_cu, int keep, |
5227 | die_reader_func_ftype *die_reader_func, | |
5228 | void *data) | |
c906108c | 5229 | { |
dee91e82 | 5230 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5231 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5232 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5233 | struct dwarf2_cu *cu; |
d521ce57 | 5234 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5235 | struct die_reader_specs reader; |
d85a05f0 | 5236 | struct die_info *comp_unit_die; |
dee91e82 | 5237 | int has_children; |
d85a05f0 | 5238 | struct attribute *attr; |
365156ad | 5239 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5240 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5241 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5242 | /* Non-zero if CU currently points to a DWO file and we need to |
5243 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5244 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5245 | int rereading_dwo_cu = 0; |
c906108c | 5246 | |
09406207 DE |
5247 | if (dwarf2_die_debug) |
5248 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5249 | this_cu->is_debug_types ? "type" : "comp", | |
5250 | this_cu->offset.sect_off); | |
5251 | ||
dee91e82 DE |
5252 | if (use_existing_cu) |
5253 | gdb_assert (keep); | |
23745b47 | 5254 | |
a2ce51a0 DE |
5255 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5256 | file (instead of going through the stub), short-circuit all of this. */ | |
5257 | if (this_cu->reading_dwo_directly) | |
5258 | { | |
5259 | /* Narrow down the scope of possibilities to have to understand. */ | |
5260 | gdb_assert (this_cu->is_debug_types); | |
5261 | gdb_assert (abbrev_table == NULL); | |
5262 | gdb_assert (!use_existing_cu); | |
5263 | init_tu_and_read_dwo_dies (this_cu, keep, die_reader_func, data); | |
5264 | return; | |
5265 | } | |
5266 | ||
dee91e82 DE |
5267 | cleanups = make_cleanup (null_cleanup, NULL); |
5268 | ||
5269 | /* This is cheap if the section is already read in. */ | |
5270 | dwarf2_read_section (objfile, section); | |
5271 | ||
5272 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5273 | |
5274 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5275 | |
5276 | if (use_existing_cu && this_cu->cu != NULL) | |
5277 | { | |
5278 | cu = this_cu->cu; | |
42e7ad6c DE |
5279 | |
5280 | /* If this CU is from a DWO file we need to start over, we need to | |
5281 | refetch the attributes from the skeleton CU. | |
5282 | This could be optimized by retrieving those attributes from when we | |
5283 | were here the first time: the previous comp_unit_die was stored in | |
5284 | comp_unit_obstack. But there's no data yet that we need this | |
5285 | optimization. */ | |
5286 | if (cu->dwo_unit != NULL) | |
5287 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5288 | } |
5289 | else | |
5290 | { | |
5291 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5292 | gdb_assert (this_cu->cu == NULL); | |
5293 | ||
5294 | cu = xmalloc (sizeof (*cu)); | |
5295 | init_one_comp_unit (cu, this_cu); | |
5296 | ||
5297 | /* If an error occurs while loading, release our storage. */ | |
365156ad | 5298 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5299 | } |
dee91e82 | 5300 | |
b0c7bfa9 | 5301 | /* Get the header. */ |
42e7ad6c DE |
5302 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5303 | { | |
5304 | /* We already have the header, there's no need to read it in again. */ | |
5305 | info_ptr += cu->header.first_die_offset.cu_off; | |
5306 | } | |
5307 | else | |
5308 | { | |
3019eac3 | 5309 | if (this_cu->is_debug_types) |
dee91e82 DE |
5310 | { |
5311 | ULONGEST signature; | |
42e7ad6c | 5312 | cu_offset type_offset_in_tu; |
dee91e82 | 5313 | |
4bdcc0c1 DE |
5314 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5315 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5316 | &signature, |
5317 | &type_offset_in_tu); | |
dee91e82 | 5318 | |
42e7ad6c DE |
5319 | /* Since per_cu is the first member of struct signatured_type, |
5320 | we can go from a pointer to one to a pointer to the other. */ | |
5321 | sig_type = (struct signatured_type *) this_cu; | |
5322 | gdb_assert (sig_type->signature == signature); | |
5323 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5324 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5325 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5326 | ||
42e7ad6c DE |
5327 | /* LENGTH has not been set yet for type units if we're |
5328 | using .gdb_index. */ | |
1ce1cefd | 5329 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5330 | |
5331 | /* Establish the type offset that can be used to lookup the type. */ | |
5332 | sig_type->type_offset_in_section.sect_off = | |
5333 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5334 | } |
5335 | else | |
5336 | { | |
4bdcc0c1 DE |
5337 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5338 | abbrev_section, | |
5339 | info_ptr, 0); | |
dee91e82 DE |
5340 | |
5341 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5342 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5343 | } |
5344 | } | |
10b3939b | 5345 | |
6caca83c | 5346 | /* Skip dummy compilation units. */ |
dee91e82 | 5347 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5348 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5349 | { | |
dee91e82 | 5350 | do_cleanups (cleanups); |
21b2bd31 | 5351 | return; |
6caca83c CC |
5352 | } |
5353 | ||
433df2d4 DE |
5354 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5355 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5356 | done. Note that it's important that if the CU had an abbrev table |
5357 | on entry we don't free it when we're done: Somewhere up the call stack | |
5358 | it may be in use. */ | |
f4dc4d17 DE |
5359 | if (abbrev_table != NULL) |
5360 | { | |
5361 | gdb_assert (cu->abbrev_table == NULL); | |
5362 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5363 | == abbrev_table->offset.sect_off); | |
5364 | cu->abbrev_table = abbrev_table; | |
5365 | } | |
5366 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5367 | { |
4bdcc0c1 | 5368 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5369 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5370 | } | |
42e7ad6c DE |
5371 | else if (rereading_dwo_cu) |
5372 | { | |
5373 | dwarf2_free_abbrev_table (cu); | |
5374 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5375 | } | |
af703f96 | 5376 | |
dee91e82 | 5377 | /* Read the top level CU/TU die. */ |
3019eac3 | 5378 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5379 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5380 | |
b0c7bfa9 DE |
5381 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5382 | from the DWO file. | |
5383 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5384 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5385 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5386 | if (attr) | |
5387 | { | |
3019eac3 | 5388 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5389 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5390 | |
5391 | if (has_children) | |
6a506a2d DE |
5392 | { |
5393 | complaint (&symfile_complaints, | |
5394 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5395 | " has children (offset 0x%x) [in module %s]"), | |
5396 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5397 | } | |
b0c7bfa9 | 5398 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5399 | if (dwo_unit != NULL) |
3019eac3 | 5400 | { |
6a506a2d DE |
5401 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5402 | abbrev_table != NULL, | |
a2ce51a0 | 5403 | comp_unit_die, NULL, |
6a506a2d DE |
5404 | &reader, &info_ptr, |
5405 | &dwo_comp_unit_die, &has_children) == 0) | |
5406 | { | |
5407 | /* Dummy die. */ | |
5408 | do_cleanups (cleanups); | |
5409 | return; | |
5410 | } | |
5411 | comp_unit_die = dwo_comp_unit_die; | |
5412 | } | |
5413 | else | |
5414 | { | |
5415 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5416 | the stub. A complaint has already been logged. There's | |
5417 | not much more we can do except pass on the stub DIE to | |
5418 | die_reader_func. We don't want to throw an error on bad | |
5419 | debug info. */ | |
3019eac3 DE |
5420 | } |
5421 | } | |
5422 | ||
b0c7bfa9 | 5423 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5424 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5425 | ||
b0c7bfa9 | 5426 | /* Done, clean up. */ |
365156ad | 5427 | if (free_cu_cleanup != NULL) |
348e048f | 5428 | { |
365156ad TT |
5429 | if (keep) |
5430 | { | |
5431 | /* We've successfully allocated this compilation unit. Let our | |
5432 | caller clean it up when finished with it. */ | |
5433 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5434 | |
365156ad TT |
5435 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5436 | So we have to manually free the abbrev table. */ | |
5437 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5438 | |
365156ad TT |
5439 | /* Link this CU into read_in_chain. */ |
5440 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5441 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5442 | } | |
5443 | else | |
5444 | do_cleanups (free_cu_cleanup); | |
348e048f | 5445 | } |
365156ad TT |
5446 | |
5447 | do_cleanups (cleanups); | |
dee91e82 DE |
5448 | } |
5449 | ||
3019eac3 DE |
5450 | /* Read CU/TU THIS_CU in section SECTION, |
5451 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
5452 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
5453 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
5454 | |
5455 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5456 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5457 | |
5458 | We fill in THIS_CU->length. | |
5459 | ||
5460 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5461 | linker) then DIE_READER_FUNC will not get called. | |
5462 | ||
5463 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5464 | This is done in order to not leave THIS_CU->cu in a state where we have |
5465 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5466 | |
5467 | static void | |
5468 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
5469 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 5470 | struct dwo_file *dwo_file, |
dee91e82 DE |
5471 | die_reader_func_ftype *die_reader_func, |
5472 | void *data) | |
5473 | { | |
5474 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5475 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5476 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5477 | struct dwarf2_cu cu; |
d521ce57 | 5478 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5479 | struct die_reader_specs reader; |
5480 | struct cleanup *cleanups; | |
5481 | struct die_info *comp_unit_die; | |
5482 | int has_children; | |
5483 | ||
09406207 DE |
5484 | if (dwarf2_die_debug) |
5485 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5486 | this_cu->is_debug_types ? "type" : "comp", | |
5487 | this_cu->offset.sect_off); | |
5488 | ||
dee91e82 DE |
5489 | gdb_assert (this_cu->cu == NULL); |
5490 | ||
dee91e82 DE |
5491 | /* This is cheap if the section is already read in. */ |
5492 | dwarf2_read_section (objfile, section); | |
5493 | ||
5494 | init_one_comp_unit (&cu, this_cu); | |
5495 | ||
5496 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5497 | ||
5498 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5499 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5500 | abbrev_section, info_ptr, | |
3019eac3 | 5501 | this_cu->is_debug_types); |
dee91e82 | 5502 | |
1ce1cefd | 5503 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5504 | |
5505 | /* Skip dummy compilation units. */ | |
5506 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5507 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5508 | { |
dee91e82 | 5509 | do_cleanups (cleanups); |
21b2bd31 | 5510 | return; |
93311388 | 5511 | } |
72bf9492 | 5512 | |
dee91e82 DE |
5513 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5514 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5515 | ||
3019eac3 | 5516 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5517 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5518 | ||
5519 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5520 | ||
5521 | do_cleanups (cleanups); | |
5522 | } | |
5523 | ||
3019eac3 DE |
5524 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5525 | does not lookup the specified DWO file. | |
5526 | This cannot be used to read DWO files. | |
dee91e82 DE |
5527 | |
5528 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5529 | This is done in order to not leave THIS_CU->cu in a state where we have |
5530 | to care whether it refers to the "main" CU or the DWO CU. | |
5531 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5532 | |
5533 | static void | |
5534 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5535 | die_reader_func_ftype *die_reader_func, | |
5536 | void *data) | |
5537 | { | |
5538 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 5539 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 5540 | NULL, |
dee91e82 DE |
5541 | die_reader_func, data); |
5542 | } | |
0018ea6f DE |
5543 | \f |
5544 | /* Type Unit Groups. | |
dee91e82 | 5545 | |
0018ea6f DE |
5546 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5547 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5548 | so that all types coming from the same compilation (.o file) are grouped | |
5549 | together. A future step could be to put the types in the same symtab as | |
5550 | the CU the types ultimately came from. */ | |
ff013f42 | 5551 | |
f4dc4d17 DE |
5552 | static hashval_t |
5553 | hash_type_unit_group (const void *item) | |
5554 | { | |
094b34ac | 5555 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5556 | |
094b34ac | 5557 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5558 | } |
348e048f DE |
5559 | |
5560 | static int | |
f4dc4d17 | 5561 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5562 | { |
f4dc4d17 DE |
5563 | const struct type_unit_group *lhs = item_lhs; |
5564 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5565 | |
094b34ac | 5566 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5567 | } |
348e048f | 5568 | |
f4dc4d17 DE |
5569 | /* Allocate a hash table for type unit groups. */ |
5570 | ||
5571 | static htab_t | |
5572 | allocate_type_unit_groups_table (void) | |
5573 | { | |
5574 | return htab_create_alloc_ex (3, | |
5575 | hash_type_unit_group, | |
5576 | eq_type_unit_group, | |
5577 | NULL, | |
5578 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5579 | hashtab_obstack_allocate, | |
5580 | dummy_obstack_deallocate); | |
5581 | } | |
dee91e82 | 5582 | |
f4dc4d17 DE |
5583 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5584 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5585 | of any one psymtab grow too big. */ | |
5586 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5587 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5588 | |
094b34ac | 5589 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5590 | Create the type_unit_group object used to hold one or more TUs. */ |
5591 | ||
5592 | static struct type_unit_group * | |
094b34ac | 5593 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5594 | { |
5595 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5596 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5597 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5598 | |
5599 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5600 | struct type_unit_group); | |
094b34ac | 5601 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5602 | per_cu->objfile = objfile; |
f4dc4d17 | 5603 | |
094b34ac DE |
5604 | if (dwarf2_per_objfile->using_index) |
5605 | { | |
5606 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5607 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5608 | } |
5609 | else | |
5610 | { | |
5611 | unsigned int line_offset = line_offset_struct.sect_off; | |
5612 | struct partial_symtab *pst; | |
5613 | char *name; | |
5614 | ||
5615 | /* Give the symtab a useful name for debug purposes. */ | |
5616 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5617 | name = xstrprintf ("<type_units_%d>", | |
5618 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5619 | else | |
5620 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5621 | ||
5622 | pst = create_partial_symtab (per_cu, name); | |
5623 | pst->anonymous = 1; | |
f4dc4d17 | 5624 | |
094b34ac DE |
5625 | xfree (name); |
5626 | } | |
f4dc4d17 | 5627 | |
094b34ac DE |
5628 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5629 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5630 | |
5631 | return tu_group; | |
5632 | } | |
5633 | ||
094b34ac DE |
5634 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5635 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5636 | |
5637 | static struct type_unit_group * | |
ff39bb5e | 5638 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5639 | { |
5640 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5641 | struct type_unit_group *tu_group; | |
5642 | void **slot; | |
5643 | unsigned int line_offset; | |
5644 | struct type_unit_group type_unit_group_for_lookup; | |
5645 | ||
5646 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5647 | { | |
5648 | dwarf2_per_objfile->type_unit_groups = | |
5649 | allocate_type_unit_groups_table (); | |
5650 | } | |
5651 | ||
5652 | /* Do we need to create a new group, or can we use an existing one? */ | |
5653 | ||
5654 | if (stmt_list) | |
5655 | { | |
5656 | line_offset = DW_UNSND (stmt_list); | |
5657 | ++tu_stats->nr_symtab_sharers; | |
5658 | } | |
5659 | else | |
5660 | { | |
5661 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5662 | We can do various things here like create one group per TU or | |
5663 | spread them over multiple groups to split up the expansion work. | |
5664 | To avoid worst case scenarios (too many groups or too large groups) | |
5665 | we, umm, group them in bunches. */ | |
5666 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5667 | | (tu_stats->nr_stmt_less_type_units | |
5668 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5669 | ++tu_stats->nr_stmt_less_type_units; | |
5670 | } | |
5671 | ||
094b34ac DE |
5672 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5673 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5674 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5675 | &type_unit_group_for_lookup, INSERT); | |
5676 | if (*slot != NULL) | |
5677 | { | |
5678 | tu_group = *slot; | |
5679 | gdb_assert (tu_group != NULL); | |
5680 | } | |
5681 | else | |
5682 | { | |
5683 | sect_offset line_offset_struct; | |
5684 | ||
5685 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5686 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5687 | *slot = tu_group; |
5688 | ++tu_stats->nr_symtabs; | |
5689 | } | |
5690 | ||
5691 | return tu_group; | |
5692 | } | |
5693 | ||
5694 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5695 | ||
5696 | struct tu_abbrev_offset | |
5697 | { | |
5698 | struct signatured_type *sig_type; | |
5699 | sect_offset abbrev_offset; | |
5700 | }; | |
5701 | ||
5702 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5703 | ||
5704 | static int | |
5705 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5706 | { | |
5707 | const struct tu_abbrev_offset * const *a = ap; | |
5708 | const struct tu_abbrev_offset * const *b = bp; | |
5709 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5710 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5711 | ||
5712 | return (aoff > boff) - (aoff < boff); | |
5713 | } | |
5714 | ||
5715 | /* A helper function to add a type_unit_group to a table. */ | |
5716 | ||
5717 | static int | |
5718 | add_type_unit_group_to_table (void **slot, void *datum) | |
5719 | { | |
5720 | struct type_unit_group *tu_group = *slot; | |
5721 | struct type_unit_group ***datap = datum; | |
5722 | ||
5723 | **datap = tu_group; | |
5724 | ++*datap; | |
5725 | ||
5726 | return 1; | |
5727 | } | |
5728 | ||
5729 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5730 | each one passing FUNC,DATA. | |
5731 | ||
5732 | The efficiency is because we sort TUs by the abbrev table they use and | |
5733 | only read each abbrev table once. In one program there are 200K TUs | |
5734 | sharing 8K abbrev tables. | |
5735 | ||
5736 | The main purpose of this function is to support building the | |
5737 | dwarf2_per_objfile->type_unit_groups table. | |
5738 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5739 | can collapse the search space by grouping them by stmt_list. | |
5740 | The savings can be significant, in the same program from above the 200K TUs | |
5741 | share 8K stmt_list tables. | |
5742 | ||
5743 | FUNC is expected to call get_type_unit_group, which will create the | |
5744 | struct type_unit_group if necessary and add it to | |
5745 | dwarf2_per_objfile->type_unit_groups. */ | |
5746 | ||
5747 | static void | |
5748 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5749 | { | |
5750 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5751 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5752 | struct cleanup *cleanups; | |
5753 | struct abbrev_table *abbrev_table; | |
5754 | sect_offset abbrev_offset; | |
5755 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5756 | struct type_unit_group **iter; | |
5757 | int i; | |
5758 | ||
5759 | /* It's up to the caller to not call us multiple times. */ | |
5760 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5761 | ||
5762 | if (dwarf2_per_objfile->n_type_units == 0) | |
5763 | return; | |
5764 | ||
5765 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5766 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5767 | read each abbrev table in. | |
5768 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5769 | This is simpler and efficient enough for now. | |
5770 | ||
5771 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5772 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5773 | stmt_list value too so in practice this should work well. | |
5774 | ||
5775 | The basic algorithm here is: | |
5776 | ||
5777 | sort TUs by abbrev table | |
5778 | for each TU with same abbrev table: | |
5779 | read abbrev table if first user | |
5780 | read TU top level DIE | |
5781 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5782 | call FUNC */ | |
5783 | ||
5784 | if (dwarf2_read_debug) | |
5785 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5786 | ||
5787 | /* Sort in a separate table to maintain the order of all_type_units | |
5788 | for .gdb_index: TU indices directly index all_type_units. */ | |
5789 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5790 | dwarf2_per_objfile->n_type_units); | |
5791 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5792 | { | |
5793 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5794 | ||
5795 | sorted_by_abbrev[i].sig_type = sig_type; | |
5796 | sorted_by_abbrev[i].abbrev_offset = | |
8a0459fd | 5797 | read_abbrev_offset (sig_type->per_cu.section, |
f4dc4d17 DE |
5798 | sig_type->per_cu.offset); |
5799 | } | |
5800 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5801 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5802 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5803 | ||
094b34ac DE |
5804 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5805 | called any number of times, so we don't reset tu_stats here. */ | |
5806 | ||
f4dc4d17 DE |
5807 | abbrev_offset.sect_off = ~(unsigned) 0; |
5808 | abbrev_table = NULL; | |
5809 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5810 | ||
5811 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5812 | { | |
5813 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5814 | ||
5815 | /* Switch to the next abbrev table if necessary. */ | |
5816 | if (abbrev_table == NULL | |
5817 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5818 | { | |
5819 | if (abbrev_table != NULL) | |
5820 | { | |
5821 | abbrev_table_free (abbrev_table); | |
5822 | /* Reset to NULL in case abbrev_table_read_table throws | |
5823 | an error: abbrev_table_free_cleanup will get called. */ | |
5824 | abbrev_table = NULL; | |
5825 | } | |
5826 | abbrev_offset = tu->abbrev_offset; | |
5827 | abbrev_table = | |
5828 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5829 | abbrev_offset); | |
5830 | ++tu_stats->nr_uniq_abbrev_tables; | |
5831 | } | |
5832 | ||
5833 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5834 | func, data); | |
5835 | } | |
5836 | ||
a2ce51a0 DE |
5837 | /* type_unit_groups can be NULL if there is an error in the debug info. |
5838 | Just create an empty table so the rest of gdb doesn't have to watch | |
5839 | for this error case. */ | |
5840 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5841 | { | |
5842 | dwarf2_per_objfile->type_unit_groups = | |
5843 | allocate_type_unit_groups_table (); | |
5844 | dwarf2_per_objfile->n_type_unit_groups = 0; | |
5845 | } | |
5846 | ||
f4dc4d17 DE |
5847 | /* Create a vector of pointers to primary type units to make it easy to |
5848 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5849 | dwarf2_per_objfile->n_type_unit_groups = | |
5850 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5851 | dwarf2_per_objfile->all_type_unit_groups = | |
5852 | obstack_alloc (&objfile->objfile_obstack, | |
5853 | dwarf2_per_objfile->n_type_unit_groups | |
5854 | * sizeof (struct type_unit_group *)); | |
5855 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5856 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5857 | add_type_unit_group_to_table, &iter); | |
5858 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5859 | == dwarf2_per_objfile->n_type_unit_groups); | |
5860 | ||
5861 | do_cleanups (cleanups); | |
5862 | ||
5863 | if (dwarf2_read_debug) | |
5864 | { | |
5865 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5866 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5867 | dwarf2_per_objfile->n_type_units); | |
5868 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5869 | tu_stats->nr_uniq_abbrev_tables); | |
5870 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5871 | tu_stats->nr_symtabs); | |
5872 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5873 | tu_stats->nr_symtab_sharers); | |
5874 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5875 | tu_stats->nr_stmt_less_type_units); | |
5876 | } | |
5877 | } | |
0018ea6f DE |
5878 | \f |
5879 | /* Partial symbol tables. */ | |
5880 | ||
5881 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5882 | ||
5883 | The caller must fill in the following details: | |
5884 | dirname, textlow, texthigh. */ | |
5885 | ||
5886 | static struct partial_symtab * | |
5887 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5888 | { | |
5889 | struct objfile *objfile = per_cu->objfile; | |
5890 | struct partial_symtab *pst; | |
5891 | ||
5892 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5893 | name, 0, | |
5894 | objfile->global_psymbols.next, | |
5895 | objfile->static_psymbols.next); | |
5896 | ||
5897 | pst->psymtabs_addrmap_supported = 1; | |
5898 | ||
5899 | /* This is the glue that links PST into GDB's symbol API. */ | |
5900 | pst->read_symtab_private = per_cu; | |
5901 | pst->read_symtab = dwarf2_read_symtab; | |
5902 | per_cu->v.psymtab = pst; | |
5903 | ||
5904 | return pst; | |
5905 | } | |
5906 | ||
b93601f3 TT |
5907 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5908 | type. */ | |
5909 | ||
5910 | struct process_psymtab_comp_unit_data | |
5911 | { | |
5912 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5913 | ||
5914 | int want_partial_unit; | |
5915 | ||
5916 | /* The "pretend" language that is used if the CU doesn't declare a | |
5917 | language. */ | |
5918 | ||
5919 | enum language pretend_language; | |
5920 | }; | |
5921 | ||
0018ea6f DE |
5922 | /* die_reader_func for process_psymtab_comp_unit. */ |
5923 | ||
5924 | static void | |
5925 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5926 | const gdb_byte *info_ptr, |
0018ea6f DE |
5927 | struct die_info *comp_unit_die, |
5928 | int has_children, | |
5929 | void *data) | |
5930 | { | |
5931 | struct dwarf2_cu *cu = reader->cu; | |
5932 | struct objfile *objfile = cu->objfile; | |
5933 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5934 | struct attribute *attr; | |
5935 | CORE_ADDR baseaddr; | |
5936 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5937 | struct partial_symtab *pst; | |
5938 | int has_pc_info; | |
5939 | const char *filename; | |
b93601f3 | 5940 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5941 | |
b93601f3 | 5942 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5943 | return; |
5944 | ||
5945 | gdb_assert (! per_cu->is_debug_types); | |
5946 | ||
b93601f3 | 5947 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5948 | |
5949 | cu->list_in_scope = &file_symbols; | |
5950 | ||
5951 | /* Allocate a new partial symbol table structure. */ | |
5952 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5953 | if (attr == NULL || !DW_STRING (attr)) | |
5954 | filename = ""; | |
5955 | else | |
5956 | filename = DW_STRING (attr); | |
5957 | ||
5958 | pst = create_partial_symtab (per_cu, filename); | |
5959 | ||
5960 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5961 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5962 | if (attr != NULL) | |
5963 | pst->dirname = DW_STRING (attr); | |
5964 | ||
5965 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5966 | ||
5967 | dwarf2_find_base_address (comp_unit_die, cu); | |
5968 | ||
5969 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5970 | `DW_AT_ranges'. */ | |
5971 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5972 | &best_highpc, cu, pst); | |
5973 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5974 | /* Store the contiguous range if it is not empty; it can be empty for | |
5975 | CUs with no code. */ | |
5976 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5977 | best_lowpc + baseaddr, | |
5978 | best_highpc + baseaddr - 1, pst); | |
5979 | ||
5980 | /* Check if comp unit has_children. | |
5981 | If so, read the rest of the partial symbols from this comp unit. | |
5982 | If not, there's no more debug_info for this comp unit. */ | |
5983 | if (has_children) | |
5984 | { | |
5985 | struct partial_die_info *first_die; | |
5986 | CORE_ADDR lowpc, highpc; | |
5987 | ||
5988 | lowpc = ((CORE_ADDR) -1); | |
5989 | highpc = ((CORE_ADDR) 0); | |
5990 | ||
5991 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5992 | ||
5993 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5994 | ! has_pc_info, cu); | |
5995 | ||
5996 | /* If we didn't find a lowpc, set it to highpc to avoid | |
5997 | complaints from `maint check'. */ | |
5998 | if (lowpc == ((CORE_ADDR) -1)) | |
5999 | lowpc = highpc; | |
6000 | ||
6001 | /* If the compilation unit didn't have an explicit address range, | |
6002 | then use the information extracted from its child dies. */ | |
6003 | if (! has_pc_info) | |
6004 | { | |
6005 | best_lowpc = lowpc; | |
6006 | best_highpc = highpc; | |
6007 | } | |
6008 | } | |
6009 | pst->textlow = best_lowpc + baseaddr; | |
6010 | pst->texthigh = best_highpc + baseaddr; | |
6011 | ||
6012 | pst->n_global_syms = objfile->global_psymbols.next - | |
6013 | (objfile->global_psymbols.list + pst->globals_offset); | |
6014 | pst->n_static_syms = objfile->static_psymbols.next - | |
6015 | (objfile->static_psymbols.list + pst->statics_offset); | |
6016 | sort_pst_symbols (objfile, pst); | |
6017 | ||
6018 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6019 | { | |
6020 | int i; | |
6021 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6022 | struct dwarf2_per_cu_data *iter; | |
6023 | ||
6024 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6025 | post-pass. */ | |
6026 | pst->number_of_dependencies = len; | |
6027 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6028 | len * sizeof (struct symtab *)); | |
6029 | for (i = 0; | |
6030 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6031 | i, iter); | |
6032 | ++i) | |
6033 | pst->dependencies[i] = iter->v.psymtab; | |
6034 | ||
6035 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6036 | } | |
6037 | ||
6038 | /* Get the list of files included in the current compilation unit, | |
6039 | and build a psymtab for each of them. */ | |
6040 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6041 | ||
6042 | if (dwarf2_read_debug) | |
6043 | { | |
6044 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6045 | ||
6046 | fprintf_unfiltered (gdb_stdlog, | |
6047 | "Psymtab for %s unit @0x%x: %s - %s" | |
6048 | ", %d global, %d static syms\n", | |
6049 | per_cu->is_debug_types ? "type" : "comp", | |
6050 | per_cu->offset.sect_off, | |
6051 | paddress (gdbarch, pst->textlow), | |
6052 | paddress (gdbarch, pst->texthigh), | |
6053 | pst->n_global_syms, pst->n_static_syms); | |
6054 | } | |
6055 | } | |
6056 | ||
6057 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6058 | Process compilation unit THIS_CU for a psymtab. */ | |
6059 | ||
6060 | static void | |
6061 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6062 | int want_partial_unit, |
6063 | enum language pretend_language) | |
0018ea6f | 6064 | { |
b93601f3 TT |
6065 | struct process_psymtab_comp_unit_data info; |
6066 | ||
0018ea6f DE |
6067 | /* If this compilation unit was already read in, free the |
6068 | cached copy in order to read it in again. This is | |
6069 | necessary because we skipped some symbols when we first | |
6070 | read in the compilation unit (see load_partial_dies). | |
6071 | This problem could be avoided, but the benefit is unclear. */ | |
6072 | if (this_cu->cu != NULL) | |
6073 | free_one_cached_comp_unit (this_cu); | |
6074 | ||
6075 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6076 | info.want_partial_unit = want_partial_unit; |
6077 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6078 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6079 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6080 | &info); |
0018ea6f DE |
6081 | |
6082 | /* Age out any secondary CUs. */ | |
6083 | age_cached_comp_units (); | |
6084 | } | |
f4dc4d17 DE |
6085 | |
6086 | /* Reader function for build_type_psymtabs. */ | |
6087 | ||
6088 | static void | |
6089 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6090 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6091 | struct die_info *type_unit_die, |
6092 | int has_children, | |
6093 | void *data) | |
6094 | { | |
6095 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6096 | struct dwarf2_cu *cu = reader->cu; | |
6097 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6098 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6099 | struct type_unit_group *tu_group; |
6100 | struct attribute *attr; | |
6101 | struct partial_die_info *first_die; | |
6102 | CORE_ADDR lowpc, highpc; | |
6103 | struct partial_symtab *pst; | |
6104 | ||
6105 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6106 | gdb_assert (per_cu->is_debug_types); |
6107 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6108 | |
6109 | if (! has_children) | |
6110 | return; | |
6111 | ||
6112 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6113 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6114 | |
0186c6a7 | 6115 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6116 | |
6117 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6118 | cu->list_in_scope = &file_symbols; | |
6119 | pst = create_partial_symtab (per_cu, ""); | |
6120 | pst->anonymous = 1; | |
6121 | ||
6122 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6123 | ||
6124 | lowpc = (CORE_ADDR) -1; | |
6125 | highpc = (CORE_ADDR) 0; | |
6126 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6127 | ||
6128 | pst->n_global_syms = objfile->global_psymbols.next - | |
6129 | (objfile->global_psymbols.list + pst->globals_offset); | |
6130 | pst->n_static_syms = objfile->static_psymbols.next - | |
6131 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6132 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6133 | } |
6134 | ||
6135 | /* Traversal function for build_type_psymtabs. */ | |
6136 | ||
6137 | static int | |
6138 | build_type_psymtab_dependencies (void **slot, void *info) | |
6139 | { | |
6140 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6141 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6142 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6143 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6144 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6145 | struct signatured_type *iter; | |
f4dc4d17 DE |
6146 | int i; |
6147 | ||
6148 | gdb_assert (len > 0); | |
0186c6a7 | 6149 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6150 | |
6151 | pst->number_of_dependencies = len; | |
6152 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6153 | len * sizeof (struct psymtab *)); | |
6154 | for (i = 0; | |
0186c6a7 | 6155 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6156 | ++i) |
6157 | { | |
0186c6a7 DE |
6158 | gdb_assert (iter->per_cu.is_debug_types); |
6159 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6160 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6161 | } |
6162 | ||
0186c6a7 | 6163 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6164 | |
6165 | return 1; | |
6166 | } | |
6167 | ||
6168 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6169 | Build partial symbol tables for the .debug_types comp-units. */ | |
6170 | ||
6171 | static void | |
6172 | build_type_psymtabs (struct objfile *objfile) | |
6173 | { | |
0e50663e | 6174 | if (! create_all_type_units (objfile)) |
348e048f DE |
6175 | return; |
6176 | ||
f4dc4d17 DE |
6177 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
6178 | ||
6179 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6180 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6181 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
6182 | } |
6183 | ||
60606b2c TT |
6184 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6185 | ||
6186 | static void | |
6187 | psymtabs_addrmap_cleanup (void *o) | |
6188 | { | |
6189 | struct objfile *objfile = o; | |
ec61707d | 6190 | |
60606b2c TT |
6191 | objfile->psymtabs_addrmap = NULL; |
6192 | } | |
6193 | ||
95554aad TT |
6194 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6195 | ||
6196 | static void | |
6197 | set_partial_user (struct objfile *objfile) | |
6198 | { | |
6199 | int i; | |
6200 | ||
6201 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6202 | { | |
6203 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
6204 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6205 | int j; | |
6206 | ||
36586728 TT |
6207 | if (pst == NULL) |
6208 | continue; | |
6209 | ||
95554aad TT |
6210 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6211 | { | |
6212 | /* Set the 'user' field only if it is not already set. */ | |
6213 | if (pst->dependencies[j]->user == NULL) | |
6214 | pst->dependencies[j]->user = pst; | |
6215 | } | |
6216 | } | |
6217 | } | |
6218 | ||
93311388 DE |
6219 | /* Build the partial symbol table by doing a quick pass through the |
6220 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6221 | |
93311388 | 6222 | static void |
c67a9c90 | 6223 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6224 | { |
60606b2c TT |
6225 | struct cleanup *back_to, *addrmap_cleanup; |
6226 | struct obstack temp_obstack; | |
21b2bd31 | 6227 | int i; |
93311388 | 6228 | |
45cfd468 DE |
6229 | if (dwarf2_read_debug) |
6230 | { | |
6231 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6232 | objfile_name (objfile)); |
45cfd468 DE |
6233 | } |
6234 | ||
98bfdba5 PA |
6235 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6236 | ||
be391dca | 6237 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6238 | |
93311388 DE |
6239 | /* Any cached compilation units will be linked by the per-objfile |
6240 | read_in_chain. Make sure to free them when we're done. */ | |
6241 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6242 | |
348e048f DE |
6243 | build_type_psymtabs (objfile); |
6244 | ||
93311388 | 6245 | create_all_comp_units (objfile); |
c906108c | 6246 | |
60606b2c TT |
6247 | /* Create a temporary address map on a temporary obstack. We later |
6248 | copy this to the final obstack. */ | |
6249 | obstack_init (&temp_obstack); | |
6250 | make_cleanup_obstack_free (&temp_obstack); | |
6251 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6252 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6253 | |
21b2bd31 | 6254 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6255 | { |
21b2bd31 | 6256 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 6257 | |
b93601f3 | 6258 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6259 | } |
ff013f42 | 6260 | |
95554aad TT |
6261 | set_partial_user (objfile); |
6262 | ||
ff013f42 JK |
6263 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6264 | &objfile->objfile_obstack); | |
60606b2c | 6265 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6266 | |
ae038cb0 | 6267 | do_cleanups (back_to); |
45cfd468 DE |
6268 | |
6269 | if (dwarf2_read_debug) | |
6270 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4262abfb | 6271 | objfile_name (objfile)); |
ae038cb0 DJ |
6272 | } |
6273 | ||
3019eac3 | 6274 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6275 | |
6276 | static void | |
dee91e82 | 6277 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6278 | const gdb_byte *info_ptr, |
dee91e82 DE |
6279 | struct die_info *comp_unit_die, |
6280 | int has_children, | |
6281 | void *data) | |
ae038cb0 | 6282 | { |
dee91e82 | 6283 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6284 | |
95554aad | 6285 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6286 | |
ae038cb0 DJ |
6287 | /* Check if comp unit has_children. |
6288 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6289 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6290 | if (has_children) |
dee91e82 DE |
6291 | load_partial_dies (reader, info_ptr, 0); |
6292 | } | |
98bfdba5 | 6293 | |
dee91e82 DE |
6294 | /* Load the partial DIEs for a secondary CU into memory. |
6295 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6296 | |
dee91e82 DE |
6297 | static void |
6298 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6299 | { | |
f4dc4d17 DE |
6300 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6301 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6302 | } |
6303 | ||
ae038cb0 | 6304 | static void |
36586728 TT |
6305 | read_comp_units_from_section (struct objfile *objfile, |
6306 | struct dwarf2_section_info *section, | |
6307 | unsigned int is_dwz, | |
6308 | int *n_allocated, | |
6309 | int *n_comp_units, | |
6310 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6311 | { |
d521ce57 | 6312 | const gdb_byte *info_ptr; |
a32a8923 | 6313 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6314 | |
bf6af496 DE |
6315 | if (dwarf2_read_debug) |
6316 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", | |
a32a8923 DE |
6317 | get_section_name (section), |
6318 | get_section_file_name (section)); | |
bf6af496 | 6319 | |
36586728 | 6320 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6321 | |
36586728 | 6322 | info_ptr = section->buffer; |
6e70227d | 6323 | |
36586728 | 6324 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6325 | { |
c764a876 | 6326 | unsigned int length, initial_length_size; |
ae038cb0 | 6327 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6328 | sect_offset offset; |
ae038cb0 | 6329 | |
36586728 | 6330 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6331 | |
6332 | /* Read just enough information to find out where the next | |
6333 | compilation unit is. */ | |
36586728 | 6334 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6335 | |
6336 | /* Save the compilation unit for later lookup. */ | |
6337 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6338 | sizeof (struct dwarf2_per_cu_data)); | |
6339 | memset (this_cu, 0, sizeof (*this_cu)); | |
6340 | this_cu->offset = offset; | |
c764a876 | 6341 | this_cu->length = length + initial_length_size; |
36586728 | 6342 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6343 | this_cu->objfile = objfile; |
8a0459fd | 6344 | this_cu->section = section; |
ae038cb0 | 6345 | |
36586728 | 6346 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6347 | { |
36586728 TT |
6348 | *n_allocated *= 2; |
6349 | *all_comp_units = xrealloc (*all_comp_units, | |
6350 | *n_allocated | |
6351 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6352 | } |
36586728 TT |
6353 | (*all_comp_units)[*n_comp_units] = this_cu; |
6354 | ++*n_comp_units; | |
ae038cb0 DJ |
6355 | |
6356 | info_ptr = info_ptr + this_cu->length; | |
6357 | } | |
36586728 TT |
6358 | } |
6359 | ||
6360 | /* Create a list of all compilation units in OBJFILE. | |
6361 | This is only done for -readnow and building partial symtabs. */ | |
6362 | ||
6363 | static void | |
6364 | create_all_comp_units (struct objfile *objfile) | |
6365 | { | |
6366 | int n_allocated; | |
6367 | int n_comp_units; | |
6368 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6369 | struct dwz_file *dwz; |
36586728 TT |
6370 | |
6371 | n_comp_units = 0; | |
6372 | n_allocated = 10; | |
6373 | all_comp_units = xmalloc (n_allocated | |
6374 | * sizeof (struct dwarf2_per_cu_data *)); | |
6375 | ||
6376 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6377 | &n_allocated, &n_comp_units, &all_comp_units); | |
6378 | ||
4db1a1dc TT |
6379 | dwz = dwarf2_get_dwz_file (); |
6380 | if (dwz != NULL) | |
6381 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6382 | &n_allocated, &n_comp_units, | |
6383 | &all_comp_units); | |
ae038cb0 DJ |
6384 | |
6385 | dwarf2_per_objfile->all_comp_units | |
6386 | = obstack_alloc (&objfile->objfile_obstack, | |
6387 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6388 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6389 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6390 | xfree (all_comp_units); | |
6391 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6392 | } |
6393 | ||
5734ee8b DJ |
6394 | /* Process all loaded DIEs for compilation unit CU, starting at |
6395 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
6396 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
6397 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
6398 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
6399 | and record the covered ranges in the addrmap. */ | |
c906108c | 6400 | |
72bf9492 DJ |
6401 | static void |
6402 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 6403 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 6404 | { |
72bf9492 | 6405 | struct partial_die_info *pdi; |
c906108c | 6406 | |
91c24f0a DC |
6407 | /* Now, march along the PDI's, descending into ones which have |
6408 | interesting children but skipping the children of the other ones, | |
6409 | until we reach the end of the compilation unit. */ | |
c906108c | 6410 | |
72bf9492 | 6411 | pdi = first_die; |
91c24f0a | 6412 | |
72bf9492 DJ |
6413 | while (pdi != NULL) |
6414 | { | |
6415 | fixup_partial_die (pdi, cu); | |
c906108c | 6416 | |
f55ee35c | 6417 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6418 | children, so we need to look at them. Ditto for anonymous |
6419 | enums. */ | |
933c6fe4 | 6420 | |
72bf9492 | 6421 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6422 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6423 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6424 | { |
72bf9492 | 6425 | switch (pdi->tag) |
c906108c SS |
6426 | { |
6427 | case DW_TAG_subprogram: | |
5734ee8b | 6428 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 6429 | break; |
72929c62 | 6430 | case DW_TAG_constant: |
c906108c SS |
6431 | case DW_TAG_variable: |
6432 | case DW_TAG_typedef: | |
91c24f0a | 6433 | case DW_TAG_union_type: |
72bf9492 | 6434 | if (!pdi->is_declaration) |
63d06c5c | 6435 | { |
72bf9492 | 6436 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6437 | } |
6438 | break; | |
c906108c | 6439 | case DW_TAG_class_type: |
680b30c7 | 6440 | case DW_TAG_interface_type: |
c906108c | 6441 | case DW_TAG_structure_type: |
72bf9492 | 6442 | if (!pdi->is_declaration) |
c906108c | 6443 | { |
72bf9492 | 6444 | add_partial_symbol (pdi, cu); |
c906108c SS |
6445 | } |
6446 | break; | |
91c24f0a | 6447 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6448 | if (!pdi->is_declaration) |
6449 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6450 | break; |
6451 | case DW_TAG_base_type: | |
a02abb62 | 6452 | case DW_TAG_subrange_type: |
c906108c | 6453 | /* File scope base type definitions are added to the partial |
c5aa993b | 6454 | symbol table. */ |
72bf9492 | 6455 | add_partial_symbol (pdi, cu); |
c906108c | 6456 | break; |
d9fa45fe | 6457 | case DW_TAG_namespace: |
5734ee8b | 6458 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 6459 | break; |
5d7cb8df JK |
6460 | case DW_TAG_module: |
6461 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
6462 | break; | |
95554aad TT |
6463 | case DW_TAG_imported_unit: |
6464 | { | |
6465 | struct dwarf2_per_cu_data *per_cu; | |
6466 | ||
f4dc4d17 DE |
6467 | /* For now we don't handle imported units in type units. */ |
6468 | if (cu->per_cu->is_debug_types) | |
6469 | { | |
6470 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6471 | " supported in type units [in module %s]"), | |
4262abfb | 6472 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6473 | } |
6474 | ||
95554aad | 6475 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6476 | pdi->is_dwz, |
95554aad TT |
6477 | cu->objfile); |
6478 | ||
6479 | /* Go read the partial unit, if needed. */ | |
6480 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6481 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6482 | |
f4dc4d17 | 6483 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6484 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6485 | } |
6486 | break; | |
c906108c SS |
6487 | default: |
6488 | break; | |
6489 | } | |
6490 | } | |
6491 | ||
72bf9492 DJ |
6492 | /* If the die has a sibling, skip to the sibling. */ |
6493 | ||
6494 | pdi = pdi->die_sibling; | |
6495 | } | |
6496 | } | |
6497 | ||
6498 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6499 | |
72bf9492 | 6500 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6501 | name is concatenated with "::" and the partial DIE's name. For |
6502 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6503 | Enumerators are an exception; they use the scope of their parent |
6504 | enumeration type, i.e. the name of the enumeration type is not | |
6505 | prepended to the enumerator. | |
91c24f0a | 6506 | |
72bf9492 DJ |
6507 | There are two complexities. One is DW_AT_specification; in this |
6508 | case "parent" means the parent of the target of the specification, | |
6509 | instead of the direct parent of the DIE. The other is compilers | |
6510 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6511 | the fully qualified name of structure types from their members' | |
6512 | linkage names. This must be done using the DIE's children rather | |
6513 | than the children of any DW_AT_specification target. We only need | |
6514 | to do this for structures at the top level, i.e. if the target of | |
6515 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6516 | have a parent. */ | |
6517 | ||
6518 | /* Compute the scope prefix associated with PDI's parent, in | |
6519 | compilation unit CU. The result will be allocated on CU's | |
6520 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6521 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6522 | static const char * |
72bf9492 DJ |
6523 | partial_die_parent_scope (struct partial_die_info *pdi, |
6524 | struct dwarf2_cu *cu) | |
6525 | { | |
15d034d0 | 6526 | const char *grandparent_scope; |
72bf9492 | 6527 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6528 | |
72bf9492 DJ |
6529 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6530 | then this means the parent of the specification DIE. */ | |
6531 | ||
6532 | real_pdi = pdi; | |
72bf9492 | 6533 | while (real_pdi->has_specification) |
36586728 TT |
6534 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6535 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6536 | |
6537 | parent = real_pdi->die_parent; | |
6538 | if (parent == NULL) | |
6539 | return NULL; | |
6540 | ||
6541 | if (parent->scope_set) | |
6542 | return parent->scope; | |
6543 | ||
6544 | fixup_partial_die (parent, cu); | |
6545 | ||
10b3939b | 6546 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6547 | |
acebe513 UW |
6548 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6549 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6550 | Work around this problem here. */ | |
6551 | if (cu->language == language_cplus | |
6e70227d | 6552 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6553 | && strcmp (parent->name, "::") == 0 |
6554 | && grandparent_scope == NULL) | |
6555 | { | |
6556 | parent->scope = NULL; | |
6557 | parent->scope_set = 1; | |
6558 | return NULL; | |
6559 | } | |
6560 | ||
9c6c53f7 SA |
6561 | if (pdi->tag == DW_TAG_enumerator) |
6562 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6563 | parent->scope = grandparent_scope; | |
6564 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6565 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6566 | || parent->tag == DW_TAG_structure_type |
6567 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6568 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6569 | || parent->tag == DW_TAG_union_type |
6570 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6571 | { |
6572 | if (grandparent_scope == NULL) | |
6573 | parent->scope = parent->name; | |
6574 | else | |
3e43a32a MS |
6575 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6576 | grandparent_scope, | |
f55ee35c | 6577 | parent->name, 0, cu); |
72bf9492 | 6578 | } |
72bf9492 DJ |
6579 | else |
6580 | { | |
6581 | /* FIXME drow/2004-04-01: What should we be doing with | |
6582 | function-local names? For partial symbols, we should probably be | |
6583 | ignoring them. */ | |
6584 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6585 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6586 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6587 | parent->scope = grandparent_scope; |
c906108c SS |
6588 | } |
6589 | ||
72bf9492 DJ |
6590 | parent->scope_set = 1; |
6591 | return parent->scope; | |
6592 | } | |
6593 | ||
6594 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6595 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6596 | |
72bf9492 DJ |
6597 | static char * |
6598 | partial_die_full_name (struct partial_die_info *pdi, | |
6599 | struct dwarf2_cu *cu) | |
6600 | { | |
15d034d0 | 6601 | const char *parent_scope; |
72bf9492 | 6602 | |
98bfdba5 PA |
6603 | /* If this is a template instantiation, we can not work out the |
6604 | template arguments from partial DIEs. So, unfortunately, we have | |
6605 | to go through the full DIEs. At least any work we do building | |
6606 | types here will be reused if full symbols are loaded later. */ | |
6607 | if (pdi->has_template_arguments) | |
6608 | { | |
6609 | fixup_partial_die (pdi, cu); | |
6610 | ||
6611 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6612 | { | |
6613 | struct die_info *die; | |
6614 | struct attribute attr; | |
6615 | struct dwarf2_cu *ref_cu = cu; | |
6616 | ||
b64f50a1 | 6617 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6618 | attr.name = 0; |
6619 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6620 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6621 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6622 | ||
6623 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6624 | } | |
6625 | } | |
6626 | ||
72bf9492 DJ |
6627 | parent_scope = partial_die_parent_scope (pdi, cu); |
6628 | if (parent_scope == NULL) | |
6629 | return NULL; | |
6630 | else | |
f55ee35c | 6631 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6632 | } |
6633 | ||
6634 | static void | |
72bf9492 | 6635 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6636 | { |
e7c27a73 | 6637 | struct objfile *objfile = cu->objfile; |
c906108c | 6638 | CORE_ADDR addr = 0; |
15d034d0 | 6639 | const char *actual_name = NULL; |
e142c38c | 6640 | CORE_ADDR baseaddr; |
15d034d0 | 6641 | char *built_actual_name; |
e142c38c DJ |
6642 | |
6643 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6644 | |
15d034d0 TT |
6645 | built_actual_name = partial_die_full_name (pdi, cu); |
6646 | if (built_actual_name != NULL) | |
6647 | actual_name = built_actual_name; | |
63d06c5c | 6648 | |
72bf9492 DJ |
6649 | if (actual_name == NULL) |
6650 | actual_name = pdi->name; | |
6651 | ||
c906108c SS |
6652 | switch (pdi->tag) |
6653 | { | |
6654 | case DW_TAG_subprogram: | |
2cfa0c8d | 6655 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6656 | { |
2cfa0c8d JB |
6657 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6658 | of the global scope. But in Ada, we want to be able to access | |
6659 | nested procedures globally. So all Ada subprograms are stored | |
6660 | in the global scope. */ | |
f47fb265 | 6661 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6662 | mst_text, objfile); */ |
f47fb265 | 6663 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6664 | built_actual_name != NULL, |
f47fb265 MS |
6665 | VAR_DOMAIN, LOC_BLOCK, |
6666 | &objfile->global_psymbols, | |
6667 | 0, pdi->lowpc + baseaddr, | |
6668 | cu->language, objfile); | |
c906108c SS |
6669 | } |
6670 | else | |
6671 | { | |
f47fb265 | 6672 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6673 | mst_file_text, objfile); */ |
f47fb265 | 6674 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6675 | built_actual_name != NULL, |
f47fb265 MS |
6676 | VAR_DOMAIN, LOC_BLOCK, |
6677 | &objfile->static_psymbols, | |
6678 | 0, pdi->lowpc + baseaddr, | |
6679 | cu->language, objfile); | |
c906108c SS |
6680 | } |
6681 | break; | |
72929c62 JB |
6682 | case DW_TAG_constant: |
6683 | { | |
6684 | struct psymbol_allocation_list *list; | |
6685 | ||
6686 | if (pdi->is_external) | |
6687 | list = &objfile->global_psymbols; | |
6688 | else | |
6689 | list = &objfile->static_psymbols; | |
f47fb265 | 6690 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6691 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6692 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6693 | } |
6694 | break; | |
c906108c | 6695 | case DW_TAG_variable: |
95554aad TT |
6696 | if (pdi->d.locdesc) |
6697 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6698 | |
95554aad | 6699 | if (pdi->d.locdesc |
caac4577 JG |
6700 | && addr == 0 |
6701 | && !dwarf2_per_objfile->has_section_at_zero) | |
6702 | { | |
6703 | /* A global or static variable may also have been stripped | |
6704 | out by the linker if unused, in which case its address | |
6705 | will be nullified; do not add such variables into partial | |
6706 | symbol table then. */ | |
6707 | } | |
6708 | else if (pdi->is_external) | |
c906108c SS |
6709 | { |
6710 | /* Global Variable. | |
6711 | Don't enter into the minimal symbol tables as there is | |
6712 | a minimal symbol table entry from the ELF symbols already. | |
6713 | Enter into partial symbol table if it has a location | |
6714 | descriptor or a type. | |
6715 | If the location descriptor is missing, new_symbol will create | |
6716 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6717 | be determined from the minimal symbol table whenever the variable | |
6718 | is referenced. | |
6719 | The address for the partial symbol table entry is not | |
6720 | used by GDB, but it comes in handy for debugging partial symbol | |
6721 | table building. */ | |
6722 | ||
95554aad | 6723 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6724 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6725 | built_actual_name != NULL, |
f47fb265 MS |
6726 | VAR_DOMAIN, LOC_STATIC, |
6727 | &objfile->global_psymbols, | |
6728 | 0, addr + baseaddr, | |
6729 | cu->language, objfile); | |
c906108c SS |
6730 | } |
6731 | else | |
6732 | { | |
0963b4bd | 6733 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6734 | if (pdi->d.locdesc == NULL) |
decbce07 | 6735 | { |
15d034d0 | 6736 | xfree (built_actual_name); |
decbce07 MS |
6737 | return; |
6738 | } | |
f47fb265 | 6739 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6740 | mst_file_data, objfile); */ |
f47fb265 | 6741 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6742 | built_actual_name != NULL, |
f47fb265 MS |
6743 | VAR_DOMAIN, LOC_STATIC, |
6744 | &objfile->static_psymbols, | |
6745 | 0, addr + baseaddr, | |
6746 | cu->language, objfile); | |
c906108c SS |
6747 | } |
6748 | break; | |
6749 | case DW_TAG_typedef: | |
6750 | case DW_TAG_base_type: | |
a02abb62 | 6751 | case DW_TAG_subrange_type: |
38d518c9 | 6752 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6753 | built_actual_name != NULL, |
176620f1 | 6754 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6755 | &objfile->static_psymbols, |
e142c38c | 6756 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6757 | break; |
72bf9492 DJ |
6758 | case DW_TAG_namespace: |
6759 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6760 | built_actual_name != NULL, |
72bf9492 DJ |
6761 | VAR_DOMAIN, LOC_TYPEDEF, |
6762 | &objfile->global_psymbols, | |
6763 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6764 | break; | |
c906108c | 6765 | case DW_TAG_class_type: |
680b30c7 | 6766 | case DW_TAG_interface_type: |
c906108c SS |
6767 | case DW_TAG_structure_type: |
6768 | case DW_TAG_union_type: | |
6769 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6770 | /* Skip external references. The DWARF standard says in the section |
6771 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6772 | structure, union or class type is represented by a structure, | |
6773 | union or class entry that does not have a byte size attribute | |
6774 | and that has a DW_AT_declaration attribute." */ | |
6775 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6776 | { |
15d034d0 | 6777 | xfree (built_actual_name); |
decbce07 MS |
6778 | return; |
6779 | } | |
fa4028e9 | 6780 | |
63d06c5c DC |
6781 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6782 | static vs. global. */ | |
38d518c9 | 6783 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6784 | built_actual_name != NULL, |
176620f1 | 6785 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6786 | (cu->language == language_cplus |
6787 | || cu->language == language_java) | |
63d06c5c DC |
6788 | ? &objfile->global_psymbols |
6789 | : &objfile->static_psymbols, | |
e142c38c | 6790 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6791 | |
c906108c SS |
6792 | break; |
6793 | case DW_TAG_enumerator: | |
38d518c9 | 6794 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6795 | built_actual_name != NULL, |
176620f1 | 6796 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6797 | (cu->language == language_cplus |
6798 | || cu->language == language_java) | |
f6fe98ef DJ |
6799 | ? &objfile->global_psymbols |
6800 | : &objfile->static_psymbols, | |
e142c38c | 6801 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6802 | break; |
6803 | default: | |
6804 | break; | |
6805 | } | |
5c4e30ca | 6806 | |
15d034d0 | 6807 | xfree (built_actual_name); |
c906108c SS |
6808 | } |
6809 | ||
5c4e30ca DC |
6810 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6811 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6812 | the name of the enclosing namespace. */ | |
91c24f0a | 6813 | |
72bf9492 DJ |
6814 | static void |
6815 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6816 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6817 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6818 | { |
72bf9492 | 6819 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6820 | |
72bf9492 | 6821 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6822 | |
6823 | /* Now scan partial symbols in that namespace. */ | |
6824 | ||
91c24f0a | 6825 | if (pdi->has_children) |
5734ee8b | 6826 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6827 | } |
6828 | ||
5d7cb8df JK |
6829 | /* Read a partial die corresponding to a Fortran module. */ |
6830 | ||
6831 | static void | |
6832 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6833 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6834 | { | |
f55ee35c | 6835 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6836 | |
6837 | if (pdi->has_children) | |
6838 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6839 | } | |
6840 | ||
bc30ff58 JB |
6841 | /* Read a partial die corresponding to a subprogram and create a partial |
6842 | symbol for that subprogram. When the CU language allows it, this | |
6843 | routine also defines a partial symbol for each nested subprogram | |
6844 | that this subprogram contains. | |
6e70227d | 6845 | |
bc30ff58 JB |
6846 | DIE my also be a lexical block, in which case we simply search |
6847 | recursively for suprograms defined inside that lexical block. | |
6848 | Again, this is only performed when the CU language allows this | |
6849 | type of definitions. */ | |
6850 | ||
6851 | static void | |
6852 | add_partial_subprogram (struct partial_die_info *pdi, | |
6853 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6854 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6855 | { |
6856 | if (pdi->tag == DW_TAG_subprogram) | |
6857 | { | |
6858 | if (pdi->has_pc_info) | |
6859 | { | |
6860 | if (pdi->lowpc < *lowpc) | |
6861 | *lowpc = pdi->lowpc; | |
6862 | if (pdi->highpc > *highpc) | |
6863 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6864 | if (need_pc) |
6865 | { | |
6866 | CORE_ADDR baseaddr; | |
6867 | struct objfile *objfile = cu->objfile; | |
6868 | ||
6869 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6870 | SECT_OFF_TEXT (objfile)); | |
6871 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6872 | pdi->lowpc + baseaddr, |
6873 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6874 | cu->per_cu->v.psymtab); |
5734ee8b | 6875 | } |
481860b3 GB |
6876 | } |
6877 | ||
6878 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6879 | { | |
bc30ff58 | 6880 | if (!pdi->is_declaration) |
e8d05480 JB |
6881 | /* Ignore subprogram DIEs that do not have a name, they are |
6882 | illegal. Do not emit a complaint at this point, we will | |
6883 | do so when we convert this psymtab into a symtab. */ | |
6884 | if (pdi->name) | |
6885 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6886 | } |
6887 | } | |
6e70227d | 6888 | |
bc30ff58 JB |
6889 | if (! pdi->has_children) |
6890 | return; | |
6891 | ||
6892 | if (cu->language == language_ada) | |
6893 | { | |
6894 | pdi = pdi->die_child; | |
6895 | while (pdi != NULL) | |
6896 | { | |
6897 | fixup_partial_die (pdi, cu); | |
6898 | if (pdi->tag == DW_TAG_subprogram | |
6899 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6900 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6901 | pdi = pdi->die_sibling; |
6902 | } | |
6903 | } | |
6904 | } | |
6905 | ||
91c24f0a DC |
6906 | /* Read a partial die corresponding to an enumeration type. */ |
6907 | ||
72bf9492 DJ |
6908 | static void |
6909 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6910 | struct dwarf2_cu *cu) | |
91c24f0a | 6911 | { |
72bf9492 | 6912 | struct partial_die_info *pdi; |
91c24f0a DC |
6913 | |
6914 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6915 | add_partial_symbol (enum_pdi, cu); |
6916 | ||
6917 | pdi = enum_pdi->die_child; | |
6918 | while (pdi) | |
91c24f0a | 6919 | { |
72bf9492 | 6920 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6921 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6922 | else |
72bf9492 DJ |
6923 | add_partial_symbol (pdi, cu); |
6924 | pdi = pdi->die_sibling; | |
91c24f0a | 6925 | } |
91c24f0a DC |
6926 | } |
6927 | ||
6caca83c CC |
6928 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6929 | ||
6930 | static unsigned int | |
d521ce57 | 6931 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
6932 | { |
6933 | unsigned int bytes_read; | |
6934 | ||
6935 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6936 | } | |
6937 | ||
4bb7a0a7 DJ |
6938 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6939 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6940 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6941 | the initial number. */ | |
6942 | ||
6943 | static struct abbrev_info * | |
d521ce57 | 6944 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6945 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6946 | { |
6947 | bfd *abfd = cu->objfile->obfd; | |
6948 | unsigned int abbrev_number; | |
6949 | struct abbrev_info *abbrev; | |
6950 | ||
6951 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6952 | ||
6953 | if (abbrev_number == 0) | |
6954 | return NULL; | |
6955 | ||
433df2d4 | 6956 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6957 | if (!abbrev) |
6958 | { | |
3e43a32a MS |
6959 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6960 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6961 | } |
6962 | ||
6963 | return abbrev; | |
6964 | } | |
6965 | ||
93311388 DE |
6966 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6967 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6968 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6969 | ||
d521ce57 TT |
6970 | static const gdb_byte * |
6971 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 6972 | { |
dee91e82 | 6973 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6974 | struct abbrev_info *abbrev; |
6975 | unsigned int bytes_read; | |
6976 | ||
6977 | while (1) | |
6978 | { | |
6979 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6980 | if (abbrev == NULL) | |
6981 | return info_ptr + bytes_read; | |
6982 | else | |
dee91e82 | 6983 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6984 | } |
6985 | } | |
6986 | ||
93311388 DE |
6987 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6988 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6989 | abbrev corresponding to that skipped uleb128 should be passed in |
6990 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6991 | children. */ | |
6992 | ||
d521ce57 TT |
6993 | static const gdb_byte * |
6994 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 6995 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
6996 | { |
6997 | unsigned int bytes_read; | |
6998 | struct attribute attr; | |
dee91e82 DE |
6999 | bfd *abfd = reader->abfd; |
7000 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7001 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7002 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7003 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7004 | unsigned int form, i; |
7005 | ||
7006 | for (i = 0; i < abbrev->num_attrs; i++) | |
7007 | { | |
7008 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7009 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7010 | { | |
dee91e82 | 7011 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7012 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7013 | complaint (&symfile_complaints, |
7014 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7015 | else |
b64f50a1 | 7016 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
7017 | } |
7018 | ||
7019 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7020 | form = abbrev->attrs[i].form; | |
7021 | skip_attribute: | |
7022 | switch (form) | |
7023 | { | |
4bb7a0a7 | 7024 | case DW_FORM_ref_addr: |
ae411497 TT |
7025 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7026 | and later it is offset sized. */ | |
7027 | if (cu->header.version == 2) | |
7028 | info_ptr += cu->header.addr_size; | |
7029 | else | |
7030 | info_ptr += cu->header.offset_size; | |
7031 | break; | |
36586728 TT |
7032 | case DW_FORM_GNU_ref_alt: |
7033 | info_ptr += cu->header.offset_size; | |
7034 | break; | |
ae411497 | 7035 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7036 | info_ptr += cu->header.addr_size; |
7037 | break; | |
7038 | case DW_FORM_data1: | |
7039 | case DW_FORM_ref1: | |
7040 | case DW_FORM_flag: | |
7041 | info_ptr += 1; | |
7042 | break; | |
2dc7f7b3 TT |
7043 | case DW_FORM_flag_present: |
7044 | break; | |
4bb7a0a7 DJ |
7045 | case DW_FORM_data2: |
7046 | case DW_FORM_ref2: | |
7047 | info_ptr += 2; | |
7048 | break; | |
7049 | case DW_FORM_data4: | |
7050 | case DW_FORM_ref4: | |
7051 | info_ptr += 4; | |
7052 | break; | |
7053 | case DW_FORM_data8: | |
7054 | case DW_FORM_ref8: | |
55f1336d | 7055 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7056 | info_ptr += 8; |
7057 | break; | |
7058 | case DW_FORM_string: | |
9b1c24c8 | 7059 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7060 | info_ptr += bytes_read; |
7061 | break; | |
2dc7f7b3 | 7062 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7063 | case DW_FORM_strp: |
36586728 | 7064 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7065 | info_ptr += cu->header.offset_size; |
7066 | break; | |
2dc7f7b3 | 7067 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7068 | case DW_FORM_block: |
7069 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7070 | info_ptr += bytes_read; | |
7071 | break; | |
7072 | case DW_FORM_block1: | |
7073 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7074 | break; | |
7075 | case DW_FORM_block2: | |
7076 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7077 | break; | |
7078 | case DW_FORM_block4: | |
7079 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7080 | break; | |
7081 | case DW_FORM_sdata: | |
7082 | case DW_FORM_udata: | |
7083 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7084 | case DW_FORM_GNU_addr_index: |
7085 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7086 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7087 | break; |
7088 | case DW_FORM_indirect: | |
7089 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7090 | info_ptr += bytes_read; | |
7091 | /* We need to continue parsing from here, so just go back to | |
7092 | the top. */ | |
7093 | goto skip_attribute; | |
7094 | ||
7095 | default: | |
3e43a32a MS |
7096 | error (_("Dwarf Error: Cannot handle %s " |
7097 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7098 | dwarf_form_name (form), |
7099 | bfd_get_filename (abfd)); | |
7100 | } | |
7101 | } | |
7102 | ||
7103 | if (abbrev->has_children) | |
dee91e82 | 7104 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7105 | else |
7106 | return info_ptr; | |
7107 | } | |
7108 | ||
93311388 | 7109 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7110 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7111 | |
d521ce57 | 7112 | static const gdb_byte * |
dee91e82 DE |
7113 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7114 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7115 | const gdb_byte *info_ptr) |
91c24f0a DC |
7116 | { |
7117 | /* Do we know the sibling already? */ | |
72bf9492 | 7118 | |
91c24f0a DC |
7119 | if (orig_pdi->sibling) |
7120 | return orig_pdi->sibling; | |
7121 | ||
7122 | /* Are there any children to deal with? */ | |
7123 | ||
7124 | if (!orig_pdi->has_children) | |
7125 | return info_ptr; | |
7126 | ||
4bb7a0a7 | 7127 | /* Skip the children the long way. */ |
91c24f0a | 7128 | |
dee91e82 | 7129 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7130 | } |
7131 | ||
257e7a09 | 7132 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7133 | not NULL. */ |
c906108c SS |
7134 | |
7135 | static void | |
257e7a09 YQ |
7136 | dwarf2_read_symtab (struct partial_symtab *self, |
7137 | struct objfile *objfile) | |
c906108c | 7138 | { |
257e7a09 | 7139 | if (self->readin) |
c906108c | 7140 | { |
442e4d9c | 7141 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7142 | self->filename); |
442e4d9c YQ |
7143 | } |
7144 | else | |
7145 | { | |
7146 | if (info_verbose) | |
c906108c | 7147 | { |
442e4d9c | 7148 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7149 | self->filename); |
442e4d9c | 7150 | gdb_flush (gdb_stdout); |
c906108c | 7151 | } |
c906108c | 7152 | |
442e4d9c YQ |
7153 | /* Restore our global data. */ |
7154 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7155 | |
442e4d9c YQ |
7156 | /* If this psymtab is constructed from a debug-only objfile, the |
7157 | has_section_at_zero flag will not necessarily be correct. We | |
7158 | can get the correct value for this flag by looking at the data | |
7159 | associated with the (presumably stripped) associated objfile. */ | |
7160 | if (objfile->separate_debug_objfile_backlink) | |
7161 | { | |
7162 | struct dwarf2_per_objfile *dpo_backlink | |
7163 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7164 | dwarf2_objfile_data_key); | |
9a619af0 | 7165 | |
442e4d9c YQ |
7166 | dwarf2_per_objfile->has_section_at_zero |
7167 | = dpo_backlink->has_section_at_zero; | |
7168 | } | |
b2ab525c | 7169 | |
442e4d9c | 7170 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7171 | |
257e7a09 | 7172 | psymtab_to_symtab_1 (self); |
c906108c | 7173 | |
442e4d9c YQ |
7174 | /* Finish up the debug error message. */ |
7175 | if (info_verbose) | |
7176 | printf_filtered (_("done.\n")); | |
c906108c | 7177 | } |
95554aad TT |
7178 | |
7179 | process_cu_includes (); | |
c906108c | 7180 | } |
9cdd5dbd DE |
7181 | \f |
7182 | /* Reading in full CUs. */ | |
c906108c | 7183 | |
10b3939b DJ |
7184 | /* Add PER_CU to the queue. */ |
7185 | ||
7186 | static void | |
95554aad TT |
7187 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7188 | enum language pretend_language) | |
10b3939b DJ |
7189 | { |
7190 | struct dwarf2_queue_item *item; | |
7191 | ||
7192 | per_cu->queued = 1; | |
7193 | item = xmalloc (sizeof (*item)); | |
7194 | item->per_cu = per_cu; | |
95554aad | 7195 | item->pretend_language = pretend_language; |
10b3939b DJ |
7196 | item->next = NULL; |
7197 | ||
7198 | if (dwarf2_queue == NULL) | |
7199 | dwarf2_queue = item; | |
7200 | else | |
7201 | dwarf2_queue_tail->next = item; | |
7202 | ||
7203 | dwarf2_queue_tail = item; | |
7204 | } | |
7205 | ||
89e63ee4 DE |
7206 | /* If PER_CU is not yet queued, add it to the queue. |
7207 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7208 | dependency. | |
0907af0c | 7209 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7210 | meaning either PER_CU is already queued or it is already loaded. |
7211 | ||
7212 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7213 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7214 | |
7215 | static int | |
89e63ee4 | 7216 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7217 | struct dwarf2_per_cu_data *per_cu, |
7218 | enum language pretend_language) | |
7219 | { | |
7220 | /* We may arrive here during partial symbol reading, if we need full | |
7221 | DIEs to process an unusual case (e.g. template arguments). Do | |
7222 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7223 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7224 | { | |
7225 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7226 | return 1; | |
7227 | return 0; | |
7228 | } | |
7229 | ||
7230 | /* Mark the dependence relation so that we don't flush PER_CU | |
7231 | too early. */ | |
89e63ee4 DE |
7232 | if (dependent_cu != NULL) |
7233 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7234 | |
7235 | /* If it's already on the queue, we have nothing to do. */ | |
7236 | if (per_cu->queued) | |
7237 | return 0; | |
7238 | ||
7239 | /* If the compilation unit is already loaded, just mark it as | |
7240 | used. */ | |
7241 | if (per_cu->cu != NULL) | |
7242 | { | |
7243 | per_cu->cu->last_used = 0; | |
7244 | return 0; | |
7245 | } | |
7246 | ||
7247 | /* Add it to the queue. */ | |
7248 | queue_comp_unit (per_cu, pretend_language); | |
7249 | ||
7250 | return 1; | |
7251 | } | |
7252 | ||
10b3939b DJ |
7253 | /* Process the queue. */ |
7254 | ||
7255 | static void | |
a0f42c21 | 7256 | process_queue (void) |
10b3939b DJ |
7257 | { |
7258 | struct dwarf2_queue_item *item, *next_item; | |
7259 | ||
45cfd468 DE |
7260 | if (dwarf2_read_debug) |
7261 | { | |
7262 | fprintf_unfiltered (gdb_stdlog, | |
7263 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7264 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7265 | } |
7266 | ||
03dd20cc DJ |
7267 | /* The queue starts out with one item, but following a DIE reference |
7268 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7269 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7270 | { | |
9291a0cd TT |
7271 | if (dwarf2_per_objfile->using_index |
7272 | ? !item->per_cu->v.quick->symtab | |
7273 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
7274 | { |
7275 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
247f5c4f | 7276 | char buf[100]; |
f4dc4d17 | 7277 | |
247f5c4f | 7278 | if (per_cu->is_debug_types) |
f4dc4d17 | 7279 | { |
247f5c4f DE |
7280 | struct signatured_type *sig_type = |
7281 | (struct signatured_type *) per_cu; | |
7282 | ||
7283 | sprintf (buf, "TU %s at offset 0x%x", | |
7284 | hex_string (sig_type->signature), per_cu->offset.sect_off); | |
f4dc4d17 | 7285 | } |
247f5c4f DE |
7286 | else |
7287 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7288 | ||
7289 | if (dwarf2_read_debug) | |
7290 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 DE |
7291 | |
7292 | if (per_cu->is_debug_types) | |
7293 | process_full_type_unit (per_cu, item->pretend_language); | |
7294 | else | |
7295 | process_full_comp_unit (per_cu, item->pretend_language); | |
7296 | ||
7297 | if (dwarf2_read_debug) | |
247f5c4f | 7298 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7299 | } |
10b3939b DJ |
7300 | |
7301 | item->per_cu->queued = 0; | |
7302 | next_item = item->next; | |
7303 | xfree (item); | |
7304 | } | |
7305 | ||
7306 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
7307 | |
7308 | if (dwarf2_read_debug) | |
7309 | { | |
7310 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7311 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7312 | } |
10b3939b DJ |
7313 | } |
7314 | ||
7315 | /* Free all allocated queue entries. This function only releases anything if | |
7316 | an error was thrown; if the queue was processed then it would have been | |
7317 | freed as we went along. */ | |
7318 | ||
7319 | static void | |
7320 | dwarf2_release_queue (void *dummy) | |
7321 | { | |
7322 | struct dwarf2_queue_item *item, *last; | |
7323 | ||
7324 | item = dwarf2_queue; | |
7325 | while (item) | |
7326 | { | |
7327 | /* Anything still marked queued is likely to be in an | |
7328 | inconsistent state, so discard it. */ | |
7329 | if (item->per_cu->queued) | |
7330 | { | |
7331 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7332 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7333 | item->per_cu->queued = 0; |
7334 | } | |
7335 | ||
7336 | last = item; | |
7337 | item = item->next; | |
7338 | xfree (last); | |
7339 | } | |
7340 | ||
7341 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7342 | } | |
7343 | ||
7344 | /* Read in full symbols for PST, and anything it depends on. */ | |
7345 | ||
c906108c | 7346 | static void |
fba45db2 | 7347 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7348 | { |
10b3939b | 7349 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7350 | int i; |
7351 | ||
95554aad TT |
7352 | if (pst->readin) |
7353 | return; | |
7354 | ||
aaa75496 | 7355 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7356 | if (!pst->dependencies[i]->readin |
7357 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7358 | { |
7359 | /* Inform about additional files that need to be read in. */ | |
7360 | if (info_verbose) | |
7361 | { | |
a3f17187 | 7362 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7363 | fputs_filtered (" ", gdb_stdout); |
7364 | wrap_here (""); | |
7365 | fputs_filtered ("and ", gdb_stdout); | |
7366 | wrap_here (""); | |
7367 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7368 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7369 | gdb_flush (gdb_stdout); |
7370 | } | |
7371 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7372 | } | |
7373 | ||
e38df1d0 | 7374 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7375 | |
7376 | if (per_cu == NULL) | |
aaa75496 JB |
7377 | { |
7378 | /* It's an include file, no symbols to read for it. | |
7379 | Everything is in the parent symtab. */ | |
7380 | pst->readin = 1; | |
7381 | return; | |
7382 | } | |
c906108c | 7383 | |
a0f42c21 | 7384 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7385 | } |
7386 | ||
dee91e82 DE |
7387 | /* Trivial hash function for die_info: the hash value of a DIE |
7388 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7389 | |
dee91e82 DE |
7390 | static hashval_t |
7391 | die_hash (const void *item) | |
10b3939b | 7392 | { |
dee91e82 | 7393 | const struct die_info *die = item; |
6502dd73 | 7394 | |
dee91e82 DE |
7395 | return die->offset.sect_off; |
7396 | } | |
63d06c5c | 7397 | |
dee91e82 DE |
7398 | /* Trivial comparison function for die_info structures: two DIEs |
7399 | are equal if they have the same offset. */ | |
98bfdba5 | 7400 | |
dee91e82 DE |
7401 | static int |
7402 | die_eq (const void *item_lhs, const void *item_rhs) | |
7403 | { | |
7404 | const struct die_info *die_lhs = item_lhs; | |
7405 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7406 | |
dee91e82 DE |
7407 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7408 | } | |
c906108c | 7409 | |
dee91e82 DE |
7410 | /* die_reader_func for load_full_comp_unit. |
7411 | This is identical to read_signatured_type_reader, | |
7412 | but is kept separate for now. */ | |
c906108c | 7413 | |
dee91e82 DE |
7414 | static void |
7415 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7416 | const gdb_byte *info_ptr, |
dee91e82 DE |
7417 | struct die_info *comp_unit_die, |
7418 | int has_children, | |
7419 | void *data) | |
7420 | { | |
7421 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7422 | enum language *language_ptr = data; |
6caca83c | 7423 | |
dee91e82 DE |
7424 | gdb_assert (cu->die_hash == NULL); |
7425 | cu->die_hash = | |
7426 | htab_create_alloc_ex (cu->header.length / 12, | |
7427 | die_hash, | |
7428 | die_eq, | |
7429 | NULL, | |
7430 | &cu->comp_unit_obstack, | |
7431 | hashtab_obstack_allocate, | |
7432 | dummy_obstack_deallocate); | |
e142c38c | 7433 | |
dee91e82 DE |
7434 | if (has_children) |
7435 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7436 | &info_ptr, comp_unit_die); | |
7437 | cu->dies = comp_unit_die; | |
7438 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7439 | |
7440 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7441 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7442 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7443 | or we won't be able to build types correctly. |
7444 | Similarly, if we do not read the producer, we can not apply | |
7445 | producer-specific interpretation. */ | |
95554aad | 7446 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7447 | } |
10b3939b | 7448 | |
dee91e82 | 7449 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7450 | |
dee91e82 | 7451 | static void |
95554aad TT |
7452 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7453 | enum language pretend_language) | |
dee91e82 | 7454 | { |
3019eac3 | 7455 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7456 | |
f4dc4d17 DE |
7457 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7458 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7459 | } |
7460 | ||
3da10d80 KS |
7461 | /* Add a DIE to the delayed physname list. */ |
7462 | ||
7463 | static void | |
7464 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7465 | const char *name, struct die_info *die, | |
7466 | struct dwarf2_cu *cu) | |
7467 | { | |
7468 | struct delayed_method_info mi; | |
7469 | mi.type = type; | |
7470 | mi.fnfield_index = fnfield_index; | |
7471 | mi.index = index; | |
7472 | mi.name = name; | |
7473 | mi.die = die; | |
7474 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7475 | } | |
7476 | ||
7477 | /* A cleanup for freeing the delayed method list. */ | |
7478 | ||
7479 | static void | |
7480 | free_delayed_list (void *ptr) | |
7481 | { | |
7482 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7483 | if (cu->method_list != NULL) | |
7484 | { | |
7485 | VEC_free (delayed_method_info, cu->method_list); | |
7486 | cu->method_list = NULL; | |
7487 | } | |
7488 | } | |
7489 | ||
7490 | /* Compute the physnames of any methods on the CU's method list. | |
7491 | ||
7492 | The computation of method physnames is delayed in order to avoid the | |
7493 | (bad) condition that one of the method's formal parameters is of an as yet | |
7494 | incomplete type. */ | |
7495 | ||
7496 | static void | |
7497 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7498 | { | |
7499 | int i; | |
7500 | struct delayed_method_info *mi; | |
7501 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7502 | { | |
1d06ead6 | 7503 | const char *physname; |
3da10d80 KS |
7504 | struct fn_fieldlist *fn_flp |
7505 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7506 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
7507 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
7508 | } | |
7509 | } | |
7510 | ||
a766d390 DE |
7511 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7512 | and it's not clear if/how imported objects will appear. | |
7513 | To keep Go support simple until that's worked out, | |
7514 | go back through what we've read and create something usable. | |
7515 | We could do this while processing each DIE, and feels kinda cleaner, | |
7516 | but that way is more invasive. | |
7517 | This is to, for example, allow the user to type "p var" or "b main" | |
7518 | without having to specify the package name, and allow lookups | |
7519 | of module.object to work in contexts that use the expression | |
7520 | parser. */ | |
7521 | ||
7522 | static void | |
7523 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7524 | { | |
7525 | char *package_name = NULL; | |
7526 | struct pending *list; | |
7527 | int i; | |
7528 | ||
7529 | for (list = global_symbols; list != NULL; list = list->next) | |
7530 | { | |
7531 | for (i = 0; i < list->nsyms; ++i) | |
7532 | { | |
7533 | struct symbol *sym = list->symbol[i]; | |
7534 | ||
7535 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7536 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7537 | { | |
7538 | char *this_package_name = go_symbol_package_name (sym); | |
7539 | ||
7540 | if (this_package_name == NULL) | |
7541 | continue; | |
7542 | if (package_name == NULL) | |
7543 | package_name = this_package_name; | |
7544 | else | |
7545 | { | |
7546 | if (strcmp (package_name, this_package_name) != 0) | |
7547 | complaint (&symfile_complaints, | |
7548 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 7549 | (SYMBOL_SYMTAB (sym) |
05cba821 | 7550 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
4262abfb | 7551 | : objfile_name (cu->objfile)), |
a766d390 DE |
7552 | this_package_name, package_name); |
7553 | xfree (this_package_name); | |
7554 | } | |
7555 | } | |
7556 | } | |
7557 | } | |
7558 | ||
7559 | if (package_name != NULL) | |
7560 | { | |
7561 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
7562 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
7563 | package_name, | |
7564 | strlen (package_name)); | |
a766d390 | 7565 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7566 | saved_package_name, objfile); |
a766d390 DE |
7567 | struct symbol *sym; |
7568 | ||
7569 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7570 | ||
e623cf5d | 7571 | sym = allocate_symbol (objfile); |
f85f34ed | 7572 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7573 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7574 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7575 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7576 | e.g., "main" finds the "main" module and not C's main(). */ | |
7577 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7578 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7579 | SYMBOL_TYPE (sym) = type; |
7580 | ||
7581 | add_symbol_to_list (sym, &global_symbols); | |
7582 | ||
7583 | xfree (package_name); | |
7584 | } | |
7585 | } | |
7586 | ||
95554aad TT |
7587 | /* Return the symtab for PER_CU. This works properly regardless of |
7588 | whether we're using the index or psymtabs. */ | |
7589 | ||
7590 | static struct symtab * | |
7591 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
7592 | { | |
7593 | return (dwarf2_per_objfile->using_index | |
7594 | ? per_cu->v.quick->symtab | |
7595 | : per_cu->v.psymtab->symtab); | |
7596 | } | |
7597 | ||
7598 | /* A helper function for computing the list of all symbol tables | |
7599 | included by PER_CU. */ | |
7600 | ||
7601 | static void | |
ec94af83 DE |
7602 | recursively_compute_inclusions (VEC (symtab_ptr) **result, |
7603 | htab_t all_children, htab_t all_type_symtabs, | |
f9125b6c TT |
7604 | struct dwarf2_per_cu_data *per_cu, |
7605 | struct symtab *immediate_parent) | |
95554aad TT |
7606 | { |
7607 | void **slot; | |
7608 | int ix; | |
ec94af83 | 7609 | struct symtab *symtab; |
95554aad TT |
7610 | struct dwarf2_per_cu_data *iter; |
7611 | ||
7612 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7613 | if (*slot != NULL) | |
7614 | { | |
7615 | /* This inclusion and its children have been processed. */ | |
7616 | return; | |
7617 | } | |
7618 | ||
7619 | *slot = per_cu; | |
7620 | /* Only add a CU if it has a symbol table. */ | |
ec94af83 DE |
7621 | symtab = get_symtab (per_cu); |
7622 | if (symtab != NULL) | |
7623 | { | |
7624 | /* If this is a type unit only add its symbol table if we haven't | |
7625 | seen it yet (type unit per_cu's can share symtabs). */ | |
7626 | if (per_cu->is_debug_types) | |
7627 | { | |
7628 | slot = htab_find_slot (all_type_symtabs, symtab, INSERT); | |
7629 | if (*slot == NULL) | |
7630 | { | |
7631 | *slot = symtab; | |
7632 | VEC_safe_push (symtab_ptr, *result, symtab); | |
f9125b6c TT |
7633 | if (symtab->user == NULL) |
7634 | symtab->user = immediate_parent; | |
ec94af83 DE |
7635 | } |
7636 | } | |
7637 | else | |
f9125b6c TT |
7638 | { |
7639 | VEC_safe_push (symtab_ptr, *result, symtab); | |
7640 | if (symtab->user == NULL) | |
7641 | symtab->user = immediate_parent; | |
7642 | } | |
ec94af83 | 7643 | } |
95554aad TT |
7644 | |
7645 | for (ix = 0; | |
796a7ff8 | 7646 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7647 | ++ix) |
ec94af83 DE |
7648 | { |
7649 | recursively_compute_inclusions (result, all_children, | |
f9125b6c | 7650 | all_type_symtabs, iter, symtab); |
ec94af83 | 7651 | } |
95554aad TT |
7652 | } |
7653 | ||
7654 | /* Compute the symtab 'includes' fields for the symtab related to | |
7655 | PER_CU. */ | |
7656 | ||
7657 | static void | |
7658 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
7659 | { | |
f4dc4d17 DE |
7660 | gdb_assert (! per_cu->is_debug_types); |
7661 | ||
796a7ff8 | 7662 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7663 | { |
7664 | int ix, len; | |
ec94af83 DE |
7665 | struct dwarf2_per_cu_data *per_cu_iter; |
7666 | struct symtab *symtab_iter; | |
7667 | VEC (symtab_ptr) *result_symtabs = NULL; | |
7668 | htab_t all_children, all_type_symtabs; | |
95554aad TT |
7669 | struct symtab *symtab = get_symtab (per_cu); |
7670 | ||
7671 | /* If we don't have a symtab, we can just skip this case. */ | |
7672 | if (symtab == NULL) | |
7673 | return; | |
7674 | ||
7675 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7676 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7677 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7678 | NULL, xcalloc, xfree); | |
95554aad TT |
7679 | |
7680 | for (ix = 0; | |
796a7ff8 | 7681 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7682 | ix, per_cu_iter); |
95554aad | 7683 | ++ix) |
ec94af83 DE |
7684 | { |
7685 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c TT |
7686 | all_type_symtabs, per_cu_iter, |
7687 | symtab); | |
ec94af83 | 7688 | } |
95554aad | 7689 | |
ec94af83 DE |
7690 | /* Now we have a transitive closure of all the included symtabs. */ |
7691 | len = VEC_length (symtab_ptr, result_symtabs); | |
95554aad TT |
7692 | symtab->includes |
7693 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
7694 | (len + 1) * sizeof (struct symtab *)); | |
7695 | for (ix = 0; | |
ec94af83 | 7696 | VEC_iterate (symtab_ptr, result_symtabs, ix, symtab_iter); |
95554aad | 7697 | ++ix) |
ec94af83 | 7698 | symtab->includes[ix] = symtab_iter; |
95554aad TT |
7699 | symtab->includes[len] = NULL; |
7700 | ||
ec94af83 | 7701 | VEC_free (symtab_ptr, result_symtabs); |
95554aad | 7702 | htab_delete (all_children); |
ec94af83 | 7703 | htab_delete (all_type_symtabs); |
95554aad TT |
7704 | } |
7705 | } | |
7706 | ||
7707 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7708 | read. */ | |
7709 | ||
7710 | static void | |
7711 | process_cu_includes (void) | |
7712 | { | |
7713 | int ix; | |
7714 | struct dwarf2_per_cu_data *iter; | |
7715 | ||
7716 | for (ix = 0; | |
7717 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7718 | ix, iter); | |
7719 | ++ix) | |
f4dc4d17 DE |
7720 | { |
7721 | if (! iter->is_debug_types) | |
7722 | compute_symtab_includes (iter); | |
7723 | } | |
95554aad TT |
7724 | |
7725 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
7726 | } | |
7727 | ||
9cdd5dbd | 7728 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
7729 | already been loaded into memory. */ |
7730 | ||
7731 | static void | |
95554aad TT |
7732 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7733 | enum language pretend_language) | |
10b3939b | 7734 | { |
10b3939b | 7735 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7736 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
7737 | CORE_ADDR lowpc, highpc; |
7738 | struct symtab *symtab; | |
3da10d80 | 7739 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 7740 | CORE_ADDR baseaddr; |
4359dff1 | 7741 | struct block *static_block; |
10b3939b DJ |
7742 | |
7743 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7744 | ||
10b3939b DJ |
7745 | buildsym_init (); |
7746 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 7747 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
7748 | |
7749 | cu->list_in_scope = &file_symbols; | |
c906108c | 7750 | |
95554aad TT |
7751 | cu->language = pretend_language; |
7752 | cu->language_defn = language_def (cu->language); | |
7753 | ||
c906108c | 7754 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 7755 | process_die (cu->dies, cu); |
c906108c | 7756 | |
a766d390 DE |
7757 | /* For now fudge the Go package. */ |
7758 | if (cu->language == language_go) | |
7759 | fixup_go_packaging (cu); | |
7760 | ||
3da10d80 KS |
7761 | /* Now that we have processed all the DIEs in the CU, all the types |
7762 | should be complete, and it should now be safe to compute all of the | |
7763 | physnames. */ | |
7764 | compute_delayed_physnames (cu); | |
7765 | do_cleanups (delayed_list_cleanup); | |
7766 | ||
fae299cd DC |
7767 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7768 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7769 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7770 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7771 | |
36586728 | 7772 | static_block |
ff546935 | 7773 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, 1); |
4359dff1 JK |
7774 | |
7775 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7776 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7777 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7778 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7779 | this comp unit. */ | |
7780 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7781 | ||
7782 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7783 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7784 | |
8be455d7 | 7785 | if (symtab != NULL) |
c906108c | 7786 | { |
df15bd07 | 7787 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7788 | |
8be455d7 JK |
7789 | /* Set symtab language to language from DW_AT_language. If the |
7790 | compilation is from a C file generated by language preprocessors, do | |
7791 | not set the language if it was already deduced by start_subfile. */ | |
7792 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7793 | symtab->language = cu->language; | |
7794 | ||
7795 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7796 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7797 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7798 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7799 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7800 | |
7801 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7802 | needed, it would be wrong due to missing DW_AT_producer there. | |
7803 | ||
7804 | Still one can confuse GDB by using non-standard GCC compilation | |
7805 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7806 | */ | |
ab260dad | 7807 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7808 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7809 | |
7810 | if (gcc_4_minor >= 5) | |
7811 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7812 | |
7813 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7814 | } |
9291a0cd TT |
7815 | |
7816 | if (dwarf2_per_objfile->using_index) | |
7817 | per_cu->v.quick->symtab = symtab; | |
7818 | else | |
7819 | { | |
7820 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7821 | pst->symtab = symtab; | |
7822 | pst->readin = 1; | |
7823 | } | |
c906108c | 7824 | |
95554aad TT |
7825 | /* Push it for inclusion processing later. */ |
7826 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7827 | ||
c906108c | 7828 | do_cleanups (back_to); |
f4dc4d17 | 7829 | } |
45cfd468 | 7830 | |
f4dc4d17 DE |
7831 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7832 | already been loaded into memory. */ | |
7833 | ||
7834 | static void | |
7835 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7836 | enum language pretend_language) | |
7837 | { | |
7838 | struct dwarf2_cu *cu = per_cu->cu; | |
7839 | struct objfile *objfile = per_cu->objfile; | |
7840 | struct symtab *symtab; | |
7841 | struct cleanup *back_to, *delayed_list_cleanup; | |
0186c6a7 DE |
7842 | struct signatured_type *sig_type; |
7843 | ||
7844 | gdb_assert (per_cu->is_debug_types); | |
7845 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
7846 | |
7847 | buildsym_init (); | |
7848 | back_to = make_cleanup (really_free_pendings, NULL); | |
7849 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7850 | ||
7851 | cu->list_in_scope = &file_symbols; | |
7852 | ||
7853 | cu->language = pretend_language; | |
7854 | cu->language_defn = language_def (cu->language); | |
7855 | ||
7856 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7857 | process_die (cu->dies, cu); | |
7858 | ||
7859 | /* For now fudge the Go package. */ | |
7860 | if (cu->language == language_go) | |
7861 | fixup_go_packaging (cu); | |
7862 | ||
7863 | /* Now that we have processed all the DIEs in the CU, all the types | |
7864 | should be complete, and it should now be safe to compute all of the | |
7865 | physnames. */ | |
7866 | compute_delayed_physnames (cu); | |
7867 | do_cleanups (delayed_list_cleanup); | |
7868 | ||
7869 | /* TUs share symbol tables. | |
7870 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7871 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7872 | this TU's symbols to the existing symtab. */ | |
0186c6a7 | 7873 | if (sig_type->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7874 | { |
f4dc4d17 | 7875 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
0186c6a7 | 7876 | sig_type->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7877 | |
7878 | if (symtab != NULL) | |
7879 | { | |
7880 | /* Set symtab language to language from DW_AT_language. If the | |
7881 | compilation is from a C file generated by language preprocessors, | |
7882 | do not set the language if it was already deduced by | |
7883 | start_subfile. */ | |
7884 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7885 | symtab->language = cu->language; | |
7886 | } | |
7887 | } | |
7888 | else | |
7889 | { | |
7890 | augment_type_symtab (objfile, | |
0186c6a7 DE |
7891 | sig_type->type_unit_group->primary_symtab); |
7892 | symtab = sig_type->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7893 | } |
7894 | ||
7895 | if (dwarf2_per_objfile->using_index) | |
7896 | per_cu->v.quick->symtab = symtab; | |
7897 | else | |
7898 | { | |
7899 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7900 | pst->symtab = symtab; | |
7901 | pst->readin = 1; | |
45cfd468 | 7902 | } |
f4dc4d17 DE |
7903 | |
7904 | do_cleanups (back_to); | |
c906108c SS |
7905 | } |
7906 | ||
95554aad TT |
7907 | /* Process an imported unit DIE. */ |
7908 | ||
7909 | static void | |
7910 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7911 | { | |
7912 | struct attribute *attr; | |
7913 | ||
f4dc4d17 DE |
7914 | /* For now we don't handle imported units in type units. */ |
7915 | if (cu->per_cu->is_debug_types) | |
7916 | { | |
7917 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7918 | " supported in type units [in module %s]"), | |
4262abfb | 7919 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
7920 | } |
7921 | ||
95554aad TT |
7922 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7923 | if (attr != NULL) | |
7924 | { | |
7925 | struct dwarf2_per_cu_data *per_cu; | |
7926 | struct symtab *imported_symtab; | |
7927 | sect_offset offset; | |
36586728 | 7928 | int is_dwz; |
95554aad TT |
7929 | |
7930 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7931 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7932 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 7933 | |
69d751e3 | 7934 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
7935 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
7936 | load_full_comp_unit (per_cu, cu->language); | |
7937 | ||
796a7ff8 | 7938 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
7939 | per_cu); |
7940 | } | |
7941 | } | |
7942 | ||
c906108c SS |
7943 | /* Process a die and its children. */ |
7944 | ||
7945 | static void | |
e7c27a73 | 7946 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7947 | { |
7948 | switch (die->tag) | |
7949 | { | |
7950 | case DW_TAG_padding: | |
7951 | break; | |
7952 | case DW_TAG_compile_unit: | |
95554aad | 7953 | case DW_TAG_partial_unit: |
e7c27a73 | 7954 | read_file_scope (die, cu); |
c906108c | 7955 | break; |
348e048f DE |
7956 | case DW_TAG_type_unit: |
7957 | read_type_unit_scope (die, cu); | |
7958 | break; | |
c906108c | 7959 | case DW_TAG_subprogram: |
c906108c | 7960 | case DW_TAG_inlined_subroutine: |
edb3359d | 7961 | read_func_scope (die, cu); |
c906108c SS |
7962 | break; |
7963 | case DW_TAG_lexical_block: | |
14898363 L |
7964 | case DW_TAG_try_block: |
7965 | case DW_TAG_catch_block: | |
e7c27a73 | 7966 | read_lexical_block_scope (die, cu); |
c906108c | 7967 | break; |
96408a79 SA |
7968 | case DW_TAG_GNU_call_site: |
7969 | read_call_site_scope (die, cu); | |
7970 | break; | |
c906108c | 7971 | case DW_TAG_class_type: |
680b30c7 | 7972 | case DW_TAG_interface_type: |
c906108c SS |
7973 | case DW_TAG_structure_type: |
7974 | case DW_TAG_union_type: | |
134d01f1 | 7975 | process_structure_scope (die, cu); |
c906108c SS |
7976 | break; |
7977 | case DW_TAG_enumeration_type: | |
134d01f1 | 7978 | process_enumeration_scope (die, cu); |
c906108c | 7979 | break; |
134d01f1 | 7980 | |
f792889a DJ |
7981 | /* These dies have a type, but processing them does not create |
7982 | a symbol or recurse to process the children. Therefore we can | |
7983 | read them on-demand through read_type_die. */ | |
c906108c | 7984 | case DW_TAG_subroutine_type: |
72019c9c | 7985 | case DW_TAG_set_type: |
c906108c | 7986 | case DW_TAG_array_type: |
c906108c | 7987 | case DW_TAG_pointer_type: |
c906108c | 7988 | case DW_TAG_ptr_to_member_type: |
c906108c | 7989 | case DW_TAG_reference_type: |
c906108c | 7990 | case DW_TAG_string_type: |
c906108c | 7991 | break; |
134d01f1 | 7992 | |
c906108c | 7993 | case DW_TAG_base_type: |
a02abb62 | 7994 | case DW_TAG_subrange_type: |
cb249c71 | 7995 | case DW_TAG_typedef: |
134d01f1 DJ |
7996 | /* Add a typedef symbol for the type definition, if it has a |
7997 | DW_AT_name. */ | |
f792889a | 7998 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 7999 | break; |
c906108c | 8000 | case DW_TAG_common_block: |
e7c27a73 | 8001 | read_common_block (die, cu); |
c906108c SS |
8002 | break; |
8003 | case DW_TAG_common_inclusion: | |
8004 | break; | |
d9fa45fe | 8005 | case DW_TAG_namespace: |
4d4ec4e5 | 8006 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8007 | read_namespace (die, cu); |
d9fa45fe | 8008 | break; |
5d7cb8df | 8009 | case DW_TAG_module: |
4d4ec4e5 | 8010 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8011 | read_module (die, cu); |
8012 | break; | |
d9fa45fe DC |
8013 | case DW_TAG_imported_declaration: |
8014 | case DW_TAG_imported_module: | |
4d4ec4e5 | 8015 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8016 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8017 | || cu->language != language_fortran)) | |
8018 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8019 | dwarf_tag_name (die->tag)); | |
8020 | read_import_statement (die, cu); | |
d9fa45fe | 8021 | break; |
95554aad TT |
8022 | |
8023 | case DW_TAG_imported_unit: | |
8024 | process_imported_unit_die (die, cu); | |
8025 | break; | |
8026 | ||
c906108c | 8027 | default: |
e7c27a73 | 8028 | new_symbol (die, NULL, cu); |
c906108c SS |
8029 | break; |
8030 | } | |
8031 | } | |
ca69b9e6 DE |
8032 | \f |
8033 | /* DWARF name computation. */ | |
c906108c | 8034 | |
94af9270 KS |
8035 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8036 | needs to have the name of the scope prepended to the name listed in the | |
8037 | die. */ | |
8038 | ||
8039 | static int | |
8040 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8041 | { | |
1c809c68 TT |
8042 | struct attribute *attr; |
8043 | ||
94af9270 KS |
8044 | switch (die->tag) |
8045 | { | |
8046 | case DW_TAG_namespace: | |
8047 | case DW_TAG_typedef: | |
8048 | case DW_TAG_class_type: | |
8049 | case DW_TAG_interface_type: | |
8050 | case DW_TAG_structure_type: | |
8051 | case DW_TAG_union_type: | |
8052 | case DW_TAG_enumeration_type: | |
8053 | case DW_TAG_enumerator: | |
8054 | case DW_TAG_subprogram: | |
8055 | case DW_TAG_member: | |
8056 | return 1; | |
8057 | ||
8058 | case DW_TAG_variable: | |
c2b0a229 | 8059 | case DW_TAG_constant: |
94af9270 KS |
8060 | /* We only need to prefix "globally" visible variables. These include |
8061 | any variable marked with DW_AT_external or any variable that | |
8062 | lives in a namespace. [Variables in anonymous namespaces | |
8063 | require prefixing, but they are not DW_AT_external.] */ | |
8064 | ||
8065 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8066 | { | |
8067 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8068 | |
94af9270 KS |
8069 | return die_needs_namespace (die_specification (die, &spec_cu), |
8070 | spec_cu); | |
8071 | } | |
8072 | ||
1c809c68 | 8073 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8074 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8075 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8076 | return 0; |
8077 | /* A variable in a lexical block of some kind does not need a | |
8078 | namespace, even though in C++ such variables may be external | |
8079 | and have a mangled name. */ | |
8080 | if (die->parent->tag == DW_TAG_lexical_block | |
8081 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8082 | || die->parent->tag == DW_TAG_catch_block |
8083 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8084 | return 0; |
8085 | return 1; | |
94af9270 KS |
8086 | |
8087 | default: | |
8088 | return 0; | |
8089 | } | |
8090 | } | |
8091 | ||
98bfdba5 PA |
8092 | /* Retrieve the last character from a mem_file. */ |
8093 | ||
8094 | static void | |
8095 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8096 | { | |
8097 | char *last_char_p = (char *) object; | |
8098 | ||
8099 | if (length > 0) | |
8100 | *last_char_p = buffer[length - 1]; | |
8101 | } | |
8102 | ||
94af9270 | 8103 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8104 | compute the physname for the object, which include a method's: |
8105 | - formal parameters (C++/Java), | |
8106 | - receiver type (Go), | |
8107 | - return type (Java). | |
8108 | ||
8109 | The term "physname" is a bit confusing. | |
8110 | For C++, for example, it is the demangled name. | |
8111 | For Go, for example, it's the mangled name. | |
94af9270 | 8112 | |
af6b7be1 JB |
8113 | For Ada, return the DIE's linkage name rather than the fully qualified |
8114 | name. PHYSNAME is ignored.. | |
8115 | ||
94af9270 KS |
8116 | The result is allocated on the objfile_obstack and canonicalized. */ |
8117 | ||
8118 | static const char * | |
15d034d0 TT |
8119 | dwarf2_compute_name (const char *name, |
8120 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8121 | int physname) |
8122 | { | |
bb5ed363 DE |
8123 | struct objfile *objfile = cu->objfile; |
8124 | ||
94af9270 KS |
8125 | if (name == NULL) |
8126 | name = dwarf2_name (die, cu); | |
8127 | ||
f55ee35c JK |
8128 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8129 | compute it by typename_concat inside GDB. */ | |
8130 | if (cu->language == language_ada | |
8131 | || (cu->language == language_fortran && physname)) | |
8132 | { | |
8133 | /* For Ada unit, we prefer the linkage name over the name, as | |
8134 | the former contains the exported name, which the user expects | |
8135 | to be able to reference. Ideally, we want the user to be able | |
8136 | to reference this entity using either natural or linkage name, | |
8137 | but we haven't started looking at this enhancement yet. */ | |
8138 | struct attribute *attr; | |
8139 | ||
8140 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8141 | if (attr == NULL) | |
8142 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8143 | if (attr && DW_STRING (attr)) | |
8144 | return DW_STRING (attr); | |
8145 | } | |
8146 | ||
94af9270 KS |
8147 | /* These are the only languages we know how to qualify names in. */ |
8148 | if (name != NULL | |
f55ee35c JK |
8149 | && (cu->language == language_cplus || cu->language == language_java |
8150 | || cu->language == language_fortran)) | |
94af9270 KS |
8151 | { |
8152 | if (die_needs_namespace (die, cu)) | |
8153 | { | |
8154 | long length; | |
0d5cff50 | 8155 | const char *prefix; |
94af9270 KS |
8156 | struct ui_file *buf; |
8157 | ||
8158 | prefix = determine_prefix (die, cu); | |
8159 | buf = mem_fileopen (); | |
8160 | if (*prefix != '\0') | |
8161 | { | |
f55ee35c JK |
8162 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8163 | physname, cu); | |
9a619af0 | 8164 | |
94af9270 KS |
8165 | fputs_unfiltered (prefixed_name, buf); |
8166 | xfree (prefixed_name); | |
8167 | } | |
8168 | else | |
62d5b8da | 8169 | fputs_unfiltered (name, buf); |
94af9270 | 8170 | |
98bfdba5 PA |
8171 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8172 | as children with DW_TAG_template_type_param or | |
8173 | DW_TAG_value_type_param. If the latter, add them to the name | |
8174 | here. If the name already has template parameters, then | |
8175 | skip this step; some versions of GCC emit both, and | |
8176 | it is more efficient to use the pre-computed name. | |
8177 | ||
8178 | Something to keep in mind about this process: it is very | |
8179 | unlikely, or in some cases downright impossible, to produce | |
8180 | something that will match the mangled name of a function. | |
8181 | If the definition of the function has the same debug info, | |
8182 | we should be able to match up with it anyway. But fallbacks | |
8183 | using the minimal symbol, for instance to find a method | |
8184 | implemented in a stripped copy of libstdc++, will not work. | |
8185 | If we do not have debug info for the definition, we will have to | |
8186 | match them up some other way. | |
8187 | ||
8188 | When we do name matching there is a related problem with function | |
8189 | templates; two instantiated function templates are allowed to | |
8190 | differ only by their return types, which we do not add here. */ | |
8191 | ||
8192 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8193 | { | |
8194 | struct attribute *attr; | |
8195 | struct die_info *child; | |
8196 | int first = 1; | |
8197 | ||
8198 | die->building_fullname = 1; | |
8199 | ||
8200 | for (child = die->child; child != NULL; child = child->sibling) | |
8201 | { | |
8202 | struct type *type; | |
12df843f | 8203 | LONGEST value; |
d521ce57 | 8204 | const gdb_byte *bytes; |
98bfdba5 PA |
8205 | struct dwarf2_locexpr_baton *baton; |
8206 | struct value *v; | |
8207 | ||
8208 | if (child->tag != DW_TAG_template_type_param | |
8209 | && child->tag != DW_TAG_template_value_param) | |
8210 | continue; | |
8211 | ||
8212 | if (first) | |
8213 | { | |
8214 | fputs_unfiltered ("<", buf); | |
8215 | first = 0; | |
8216 | } | |
8217 | else | |
8218 | fputs_unfiltered (", ", buf); | |
8219 | ||
8220 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8221 | if (attr == NULL) | |
8222 | { | |
8223 | complaint (&symfile_complaints, | |
8224 | _("template parameter missing DW_AT_type")); | |
8225 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8226 | continue; | |
8227 | } | |
8228 | type = die_type (child, cu); | |
8229 | ||
8230 | if (child->tag == DW_TAG_template_type_param) | |
8231 | { | |
79d43c61 | 8232 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8233 | continue; |
8234 | } | |
8235 | ||
8236 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8237 | if (attr == NULL) | |
8238 | { | |
8239 | complaint (&symfile_complaints, | |
3e43a32a MS |
8240 | _("template parameter missing " |
8241 | "DW_AT_const_value")); | |
98bfdba5 PA |
8242 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8243 | continue; | |
8244 | } | |
8245 | ||
8246 | dwarf2_const_value_attr (attr, type, name, | |
8247 | &cu->comp_unit_obstack, cu, | |
8248 | &value, &bytes, &baton); | |
8249 | ||
8250 | if (TYPE_NOSIGN (type)) | |
8251 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8252 | changed, this can use value_print instead. */ | |
8253 | c_printchar (value, type, buf); | |
8254 | else | |
8255 | { | |
8256 | struct value_print_options opts; | |
8257 | ||
8258 | if (baton != NULL) | |
8259 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8260 | baton->data, | |
8261 | baton->size, | |
8262 | baton->per_cu); | |
8263 | else if (bytes != NULL) | |
8264 | { | |
8265 | v = allocate_value (type); | |
8266 | memcpy (value_contents_writeable (v), bytes, | |
8267 | TYPE_LENGTH (type)); | |
8268 | } | |
8269 | else | |
8270 | v = value_from_longest (type, value); | |
8271 | ||
3e43a32a MS |
8272 | /* Specify decimal so that we do not depend on |
8273 | the radix. */ | |
98bfdba5 PA |
8274 | get_formatted_print_options (&opts, 'd'); |
8275 | opts.raw = 1; | |
8276 | value_print (v, buf, &opts); | |
8277 | release_value (v); | |
8278 | value_free (v); | |
8279 | } | |
8280 | } | |
8281 | ||
8282 | die->building_fullname = 0; | |
8283 | ||
8284 | if (!first) | |
8285 | { | |
8286 | /* Close the argument list, with a space if necessary | |
8287 | (nested templates). */ | |
8288 | char last_char = '\0'; | |
8289 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8290 | if (last_char == '>') | |
8291 | fputs_unfiltered (" >", buf); | |
8292 | else | |
8293 | fputs_unfiltered (">", buf); | |
8294 | } | |
8295 | } | |
8296 | ||
94af9270 KS |
8297 | /* For Java and C++ methods, append formal parameter type |
8298 | information, if PHYSNAME. */ | |
6e70227d | 8299 | |
94af9270 KS |
8300 | if (physname && die->tag == DW_TAG_subprogram |
8301 | && (cu->language == language_cplus | |
8302 | || cu->language == language_java)) | |
8303 | { | |
8304 | struct type *type = read_type_die (die, cu); | |
8305 | ||
79d43c61 TT |
8306 | c_type_print_args (type, buf, 1, cu->language, |
8307 | &type_print_raw_options); | |
94af9270 KS |
8308 | |
8309 | if (cu->language == language_java) | |
8310 | { | |
8311 | /* For java, we must append the return type to method | |
0963b4bd | 8312 | names. */ |
94af9270 KS |
8313 | if (die->tag == DW_TAG_subprogram) |
8314 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8315 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8316 | } |
8317 | else if (cu->language == language_cplus) | |
8318 | { | |
60430eff DJ |
8319 | /* Assume that an artificial first parameter is |
8320 | "this", but do not crash if it is not. RealView | |
8321 | marks unnamed (and thus unused) parameters as | |
8322 | artificial; there is no way to differentiate | |
8323 | the two cases. */ | |
94af9270 KS |
8324 | if (TYPE_NFIELDS (type) > 0 |
8325 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8326 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8327 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8328 | 0)))) | |
94af9270 KS |
8329 | fputs_unfiltered (" const", buf); |
8330 | } | |
8331 | } | |
8332 | ||
bb5ed363 | 8333 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
8334 | &length); |
8335 | ui_file_delete (buf); | |
8336 | ||
8337 | if (cu->language == language_cplus) | |
8338 | { | |
15d034d0 | 8339 | const char *cname |
94af9270 | 8340 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 8341 | &objfile->objfile_obstack); |
9a619af0 | 8342 | |
94af9270 KS |
8343 | if (cname != NULL) |
8344 | name = cname; | |
8345 | } | |
8346 | } | |
8347 | } | |
8348 | ||
8349 | return name; | |
8350 | } | |
8351 | ||
0114d602 DJ |
8352 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8353 | If scope qualifiers are appropriate they will be added. The result | |
8354 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
8355 | not have a name. NAME may either be from a previous call to |
8356 | dwarf2_name or NULL. | |
8357 | ||
0963b4bd | 8358 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8359 | |
8360 | static const char * | |
15d034d0 | 8361 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8362 | { |
94af9270 KS |
8363 | return dwarf2_compute_name (name, die, cu, 0); |
8364 | } | |
0114d602 | 8365 | |
94af9270 KS |
8366 | /* Construct a physname for the given DIE in CU. NAME may either be |
8367 | from a previous call to dwarf2_name or NULL. The result will be | |
8368 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8369 | name. | |
0114d602 | 8370 | |
94af9270 | 8371 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8372 | |
94af9270 | 8373 | static const char * |
15d034d0 | 8374 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8375 | { |
bb5ed363 | 8376 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8377 | struct attribute *attr; |
8378 | const char *retval, *mangled = NULL, *canon = NULL; | |
8379 | struct cleanup *back_to; | |
8380 | int need_copy = 1; | |
8381 | ||
8382 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8383 | on its own. */ | |
8384 | if (!die_needs_namespace (die, cu)) | |
8385 | return dwarf2_compute_name (name, die, cu, 1); | |
8386 | ||
8387 | back_to = make_cleanup (null_cleanup, NULL); | |
8388 | ||
8389 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8390 | if (!attr) | |
8391 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8392 | ||
8393 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8394 | has computed. */ | |
8395 | if (attr && DW_STRING (attr)) | |
8396 | { | |
8397 | char *demangled; | |
8398 | ||
8399 | mangled = DW_STRING (attr); | |
8400 | ||
8401 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8402 | type. It is easier for GDB users to search for such functions as | |
8403 | `name(params)' than `long name(params)'. In such case the minimal | |
8404 | symbol names do not match the full symbol names but for template | |
8405 | functions there is never a need to look up their definition from their | |
8406 | declaration so the only disadvantage remains the minimal symbol | |
8407 | variant `long name(params)' does not have the proper inferior type. | |
8408 | */ | |
8409 | ||
a766d390 DE |
8410 | if (cu->language == language_go) |
8411 | { | |
8412 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8413 | new_symbol_full assumes we return the mangled name. | |
8414 | This just undoes that lie until things are cleaned up. */ | |
8415 | demangled = NULL; | |
8416 | } | |
8417 | else | |
8418 | { | |
8de20a37 TT |
8419 | demangled = gdb_demangle (mangled, |
8420 | (DMGL_PARAMS | DMGL_ANSI | |
8421 | | (cu->language == language_java | |
8422 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8423 | : DMGL_RET_DROP))); | |
a766d390 | 8424 | } |
900e11f9 JK |
8425 | if (demangled) |
8426 | { | |
8427 | make_cleanup (xfree, demangled); | |
8428 | canon = demangled; | |
8429 | } | |
8430 | else | |
8431 | { | |
8432 | canon = mangled; | |
8433 | need_copy = 0; | |
8434 | } | |
8435 | } | |
8436 | ||
8437 | if (canon == NULL || check_physname) | |
8438 | { | |
8439 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8440 | ||
8441 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8442 | { | |
8443 | /* It may not mean a bug in GDB. The compiler could also | |
8444 | compute DW_AT_linkage_name incorrectly. But in such case | |
8445 | GDB would need to be bug-to-bug compatible. */ | |
8446 | ||
8447 | complaint (&symfile_complaints, | |
8448 | _("Computed physname <%s> does not match demangled <%s> " | |
8449 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8450 | physname, canon, mangled, die->offset.sect_off, |
8451 | objfile_name (objfile)); | |
900e11f9 JK |
8452 | |
8453 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8454 | is available here - over computed PHYSNAME. It is safer | |
8455 | against both buggy GDB and buggy compilers. */ | |
8456 | ||
8457 | retval = canon; | |
8458 | } | |
8459 | else | |
8460 | { | |
8461 | retval = physname; | |
8462 | need_copy = 0; | |
8463 | } | |
8464 | } | |
8465 | else | |
8466 | retval = canon; | |
8467 | ||
8468 | if (need_copy) | |
10f0c4bb | 8469 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
8470 | |
8471 | do_cleanups (back_to); | |
8472 | return retval; | |
0114d602 DJ |
8473 | } |
8474 | ||
27aa8d6a SW |
8475 | /* Read the import statement specified by the given die and record it. */ |
8476 | ||
8477 | static void | |
8478 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8479 | { | |
bb5ed363 | 8480 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8481 | struct attribute *import_attr; |
32019081 | 8482 | struct die_info *imported_die, *child_die; |
de4affc9 | 8483 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8484 | const char *imported_name; |
794684b6 | 8485 | const char *imported_name_prefix; |
13387711 SW |
8486 | const char *canonical_name; |
8487 | const char *import_alias; | |
8488 | const char *imported_declaration = NULL; | |
794684b6 | 8489 | const char *import_prefix; |
32019081 JK |
8490 | VEC (const_char_ptr) *excludes = NULL; |
8491 | struct cleanup *cleanups; | |
13387711 | 8492 | |
27aa8d6a SW |
8493 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8494 | if (import_attr == NULL) | |
8495 | { | |
8496 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8497 | dwarf_tag_name (die->tag)); | |
8498 | return; | |
8499 | } | |
8500 | ||
de4affc9 CC |
8501 | imported_cu = cu; |
8502 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8503 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8504 | if (imported_name == NULL) |
8505 | { | |
8506 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8507 | ||
8508 | The import in the following code: | |
8509 | namespace A | |
8510 | { | |
8511 | typedef int B; | |
8512 | } | |
8513 | ||
8514 | int main () | |
8515 | { | |
8516 | using A::B; | |
8517 | B b; | |
8518 | return b; | |
8519 | } | |
8520 | ||
8521 | ... | |
8522 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8523 | <52> DW_AT_decl_file : 1 | |
8524 | <53> DW_AT_decl_line : 6 | |
8525 | <54> DW_AT_import : <0x75> | |
8526 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8527 | <59> DW_AT_name : B | |
8528 | <5b> DW_AT_decl_file : 1 | |
8529 | <5c> DW_AT_decl_line : 2 | |
8530 | <5d> DW_AT_type : <0x6e> | |
8531 | ... | |
8532 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8533 | <76> DW_AT_byte_size : 4 | |
8534 | <77> DW_AT_encoding : 5 (signed) | |
8535 | ||
8536 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8537 | This case will be ignored until the gcc bug is fixed. */ | |
8538 | return; | |
8539 | } | |
8540 | ||
82856980 SW |
8541 | /* Figure out the local name after import. */ |
8542 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8543 | |
794684b6 SW |
8544 | /* Figure out where the statement is being imported to. */ |
8545 | import_prefix = determine_prefix (die, cu); | |
8546 | ||
8547 | /* Figure out what the scope of the imported die is and prepend it | |
8548 | to the name of the imported die. */ | |
de4affc9 | 8549 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8550 | |
f55ee35c JK |
8551 | if (imported_die->tag != DW_TAG_namespace |
8552 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8553 | { |
13387711 SW |
8554 | imported_declaration = imported_name; |
8555 | canonical_name = imported_name_prefix; | |
794684b6 | 8556 | } |
13387711 | 8557 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8558 | canonical_name = obconcat (&objfile->objfile_obstack, |
8559 | imported_name_prefix, "::", imported_name, | |
8560 | (char *) NULL); | |
13387711 SW |
8561 | else |
8562 | canonical_name = imported_name; | |
794684b6 | 8563 | |
32019081 JK |
8564 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8565 | ||
8566 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8567 | for (child_die = die->child; child_die && child_die->tag; | |
8568 | child_die = sibling_die (child_die)) | |
8569 | { | |
8570 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8571 | represented by an imported module entry with an import attribute | |
8572 | referring to the module and owned entries corresponding to those | |
8573 | entities that are renamed as part of being imported. */ | |
8574 | ||
8575 | if (child_die->tag != DW_TAG_imported_declaration) | |
8576 | { | |
8577 | complaint (&symfile_complaints, | |
8578 | _("child DW_TAG_imported_declaration expected " | |
8579 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8580 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8581 | continue; |
8582 | } | |
8583 | ||
8584 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8585 | if (import_attr == NULL) | |
8586 | { | |
8587 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8588 | dwarf_tag_name (child_die->tag)); | |
8589 | continue; | |
8590 | } | |
8591 | ||
8592 | imported_cu = cu; | |
8593 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8594 | &imported_cu); | |
8595 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8596 | if (imported_name == NULL) | |
8597 | { | |
8598 | complaint (&symfile_complaints, | |
8599 | _("child DW_TAG_imported_declaration has unknown " | |
8600 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8601 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8602 | continue; |
8603 | } | |
8604 | ||
8605 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8606 | ||
8607 | process_die (child_die, cu); | |
8608 | } | |
8609 | ||
c0cc3a76 SW |
8610 | cp_add_using_directive (import_prefix, |
8611 | canonical_name, | |
8612 | import_alias, | |
13387711 | 8613 | imported_declaration, |
32019081 | 8614 | excludes, |
12aaed36 | 8615 | 0, |
bb5ed363 | 8616 | &objfile->objfile_obstack); |
32019081 JK |
8617 | |
8618 | do_cleanups (cleanups); | |
27aa8d6a SW |
8619 | } |
8620 | ||
f4dc4d17 | 8621 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 8622 | |
cb1df416 DJ |
8623 | static void |
8624 | free_cu_line_header (void *arg) | |
8625 | { | |
8626 | struct dwarf2_cu *cu = arg; | |
8627 | ||
8628 | free_line_header (cu->line_header); | |
8629 | cu->line_header = NULL; | |
8630 | } | |
8631 | ||
1b80a9fa JK |
8632 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
8633 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
8634 | this, it was first present in GCC release 4.3.0. */ | |
8635 | ||
8636 | static int | |
8637 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
8638 | { | |
8639 | if (!cu->checked_producer) | |
8640 | check_producer (cu); | |
8641 | ||
8642 | return cu->producer_is_gcc_lt_4_3; | |
8643 | } | |
8644 | ||
9291a0cd TT |
8645 | static void |
8646 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 8647 | const char **name, const char **comp_dir) |
9291a0cd TT |
8648 | { |
8649 | struct attribute *attr; | |
8650 | ||
8651 | *name = NULL; | |
8652 | *comp_dir = NULL; | |
8653 | ||
8654 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
8655 | is not a source language identifier. */ | |
8656 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8657 | if (attr) | |
8658 | { | |
8659 | *name = DW_STRING (attr); | |
8660 | } | |
8661 | ||
8662 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
8663 | if (attr) | |
8664 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
8665 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
8666 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 8667 | { |
15d034d0 TT |
8668 | char *d = ldirname (*name); |
8669 | ||
8670 | *comp_dir = d; | |
8671 | if (d != NULL) | |
8672 | make_cleanup (xfree, d); | |
9291a0cd TT |
8673 | } |
8674 | if (*comp_dir != NULL) | |
8675 | { | |
8676 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
8677 | directory, get rid of it. */ | |
8678 | char *cp = strchr (*comp_dir, ':'); | |
8679 | ||
8680 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
8681 | *comp_dir = cp + 1; | |
8682 | } | |
8683 | ||
8684 | if (*name == NULL) | |
8685 | *name = "<unknown>"; | |
8686 | } | |
8687 | ||
f4dc4d17 DE |
8688 | /* Handle DW_AT_stmt_list for a compilation unit. |
8689 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
8690 | COMP_DIR is the compilation directory. |
8691 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
8692 | |
8693 | static void | |
8694 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
b385a60d | 8695 | const char *comp_dir) /* ARI: editCase function */ |
2ab95328 TT |
8696 | { |
8697 | struct attribute *attr; | |
2ab95328 | 8698 | |
f4dc4d17 DE |
8699 | gdb_assert (! cu->per_cu->is_debug_types); |
8700 | ||
2ab95328 TT |
8701 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
8702 | if (attr) | |
8703 | { | |
8704 | unsigned int line_offset = DW_UNSND (attr); | |
8705 | struct line_header *line_header | |
3019eac3 | 8706 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
8707 | |
8708 | if (line_header) | |
dee91e82 DE |
8709 | { |
8710 | cu->line_header = line_header; | |
8711 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 8712 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 8713 | } |
2ab95328 TT |
8714 | } |
8715 | } | |
8716 | ||
95554aad | 8717 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 8718 | |
c906108c | 8719 | static void |
e7c27a73 | 8720 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8721 | { |
dee91e82 | 8722 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 8723 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 8724 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
8725 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
8726 | struct attribute *attr; | |
15d034d0 TT |
8727 | const char *name = NULL; |
8728 | const char *comp_dir = NULL; | |
c906108c SS |
8729 | struct die_info *child_die; |
8730 | bfd *abfd = objfile->obfd; | |
e142c38c | 8731 | CORE_ADDR baseaddr; |
6e70227d | 8732 | |
e142c38c | 8733 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 8734 | |
fae299cd | 8735 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
8736 | |
8737 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
8738 | from finish_block. */ | |
2acceee2 | 8739 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
8740 | lowpc = highpc; |
8741 | lowpc += baseaddr; | |
8742 | highpc += baseaddr; | |
8743 | ||
9291a0cd | 8744 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 8745 | |
95554aad | 8746 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 8747 | |
f4b8a18d KW |
8748 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
8749 | standardised yet. As a workaround for the language detection we fall | |
8750 | back to the DW_AT_producer string. */ | |
8751 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
8752 | cu->language = language_opencl; | |
8753 | ||
3019eac3 DE |
8754 | /* Similar hack for Go. */ |
8755 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
8756 | set_cu_language (DW_LANG_Go, cu); | |
8757 | ||
f4dc4d17 | 8758 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
8759 | |
8760 | /* Decode line number information if present. We do this before | |
8761 | processing child DIEs, so that the line header table is available | |
8762 | for DW_AT_decl_file. */ | |
f4dc4d17 | 8763 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8764 | |
8765 | /* Process all dies in compilation unit. */ | |
8766 | if (die->child != NULL) | |
8767 | { | |
8768 | child_die = die->child; | |
8769 | while (child_die && child_die->tag) | |
8770 | { | |
8771 | process_die (child_die, cu); | |
8772 | child_die = sibling_die (child_die); | |
8773 | } | |
8774 | } | |
8775 | ||
8776 | /* Decode macro information, if present. Dwarf 2 macro information | |
8777 | refers to information in the line number info statement program | |
8778 | header, so we can only read it if we've read the header | |
8779 | successfully. */ | |
8780 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8781 | if (attr && cu->line_header) | |
8782 | { | |
8783 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8784 | complaint (&symfile_complaints, | |
8785 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8786 | ||
09262596 | 8787 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8788 | } |
8789 | else | |
8790 | { | |
8791 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8792 | if (attr && cu->line_header) | |
8793 | { | |
8794 | unsigned int macro_offset = DW_UNSND (attr); | |
8795 | ||
09262596 | 8796 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8797 | } |
8798 | } | |
8799 | ||
8800 | do_cleanups (back_to); | |
8801 | } | |
8802 | ||
f4dc4d17 DE |
8803 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8804 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8805 | symtabs with another TU and the symtabs have already been created | |
8806 | then restore those symtabs in the line header. | |
8807 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8808 | |
8809 | static void | |
f4dc4d17 | 8810 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8811 | { |
f4dc4d17 DE |
8812 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8813 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8814 | struct type_unit_group *tu_group; | |
8815 | int first_time; | |
8816 | struct line_header *lh; | |
3019eac3 | 8817 | struct attribute *attr; |
f4dc4d17 | 8818 | unsigned int i, line_offset; |
0186c6a7 | 8819 | struct signatured_type *sig_type; |
3019eac3 | 8820 | |
f4dc4d17 | 8821 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 8822 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 8823 | |
f4dc4d17 | 8824 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8825 | |
f4dc4d17 | 8826 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 8827 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
8828 | if (sig_type->type_unit_group == NULL) |
8829 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
8830 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
8831 | |
8832 | /* If we've already processed this stmt_list there's no real need to | |
8833 | do it again, we could fake it and just recreate the part we need | |
8834 | (file name,index -> symtab mapping). If data shows this optimization | |
8835 | is useful we can do it then. */ | |
8836 | first_time = tu_group->primary_symtab == NULL; | |
8837 | ||
8838 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8839 | debug info. */ | |
8840 | lh = NULL; | |
8841 | if (attr != NULL) | |
3019eac3 | 8842 | { |
f4dc4d17 DE |
8843 | line_offset = DW_UNSND (attr); |
8844 | lh = dwarf_decode_line_header (line_offset, cu); | |
8845 | } | |
8846 | if (lh == NULL) | |
8847 | { | |
8848 | if (first_time) | |
8849 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8850 | else | |
8851 | { | |
8852 | gdb_assert (tu_group->symtabs == NULL); | |
8853 | restart_symtab (0); | |
8854 | } | |
8855 | /* Note: The primary symtab will get allocated at the end. */ | |
8856 | return; | |
3019eac3 DE |
8857 | } |
8858 | ||
f4dc4d17 DE |
8859 | cu->line_header = lh; |
8860 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8861 | |
f4dc4d17 DE |
8862 | if (first_time) |
8863 | { | |
8864 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8865 | |
f4dc4d17 DE |
8866 | tu_group->num_symtabs = lh->num_file_names; |
8867 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 8868 | |
f4dc4d17 DE |
8869 | for (i = 0; i < lh->num_file_names; ++i) |
8870 | { | |
d521ce57 | 8871 | const char *dir = NULL; |
f4dc4d17 | 8872 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 8873 | |
f4dc4d17 DE |
8874 | if (fe->dir_index) |
8875 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8876 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 8877 | |
f4dc4d17 DE |
8878 | /* Note: We don't have to watch for the main subfile here, type units |
8879 | don't have DW_AT_name. */ | |
3019eac3 | 8880 | |
f4dc4d17 DE |
8881 | if (current_subfile->symtab == NULL) |
8882 | { | |
8883 | /* NOTE: start_subfile will recognize when it's been passed | |
8884 | a file it has already seen. So we can't assume there's a | |
8885 | simple mapping from lh->file_names to subfiles, | |
8886 | lh->file_names may contain dups. */ | |
8887 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8888 | objfile); | |
8889 | } | |
8890 | ||
8891 | fe->symtab = current_subfile->symtab; | |
8892 | tu_group->symtabs[i] = fe->symtab; | |
8893 | } | |
8894 | } | |
8895 | else | |
3019eac3 | 8896 | { |
f4dc4d17 DE |
8897 | restart_symtab (0); |
8898 | ||
8899 | for (i = 0; i < lh->num_file_names; ++i) | |
8900 | { | |
8901 | struct file_entry *fe = &lh->file_names[i]; | |
8902 | ||
8903 | fe->symtab = tu_group->symtabs[i]; | |
8904 | } | |
3019eac3 DE |
8905 | } |
8906 | ||
f4dc4d17 DE |
8907 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
8908 | so they don't have a "real" (so to speak) symtab anyway. | |
8909 | There is later code that will assign the main symtab to all symbols | |
8910 | that don't have one. We need to handle the case of a symbol with a | |
8911 | missing symtab (DW_AT_decl_file) anyway. */ | |
8912 | } | |
3019eac3 | 8913 | |
f4dc4d17 DE |
8914 | /* Process DW_TAG_type_unit. |
8915 | For TUs we want to skip the first top level sibling if it's not the | |
8916 | actual type being defined by this TU. In this case the first top | |
8917 | level sibling is there to provide context only. */ | |
3019eac3 | 8918 | |
f4dc4d17 DE |
8919 | static void |
8920 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8921 | { | |
8922 | struct die_info *child_die; | |
3019eac3 | 8923 | |
f4dc4d17 DE |
8924 | prepare_one_comp_unit (cu, die, language_minimal); |
8925 | ||
8926 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
8927 | We do this before processing child DIEs, so that the line header table | |
8928 | is available for DW_AT_decl_file. */ | |
8929 | setup_type_unit_groups (die, cu); | |
8930 | ||
8931 | if (die->child != NULL) | |
8932 | { | |
8933 | child_die = die->child; | |
8934 | while (child_die && child_die->tag) | |
8935 | { | |
8936 | process_die (child_die, cu); | |
8937 | child_die = sibling_die (child_die); | |
8938 | } | |
8939 | } | |
3019eac3 DE |
8940 | } |
8941 | \f | |
80626a55 DE |
8942 | /* DWO/DWP files. |
8943 | ||
8944 | http://gcc.gnu.org/wiki/DebugFission | |
8945 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
8946 | ||
8947 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
8948 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
8949 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
8950 | |
8951 | static hashval_t | |
8952 | hash_dwo_file (const void *item) | |
8953 | { | |
8954 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 8955 | hashval_t hash; |
3019eac3 | 8956 | |
a2ce51a0 DE |
8957 | hash = htab_hash_string (dwo_file->dwo_name); |
8958 | if (dwo_file->comp_dir != NULL) | |
8959 | hash += htab_hash_string (dwo_file->comp_dir); | |
8960 | return hash; | |
3019eac3 DE |
8961 | } |
8962 | ||
8963 | static int | |
8964 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8965 | { | |
8966 | const struct dwo_file *lhs = item_lhs; | |
8967 | const struct dwo_file *rhs = item_rhs; | |
8968 | ||
a2ce51a0 DE |
8969 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
8970 | return 0; | |
8971 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
8972 | return lhs->comp_dir == rhs->comp_dir; | |
8973 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
8974 | } |
8975 | ||
8976 | /* Allocate a hash table for DWO files. */ | |
8977 | ||
8978 | static htab_t | |
8979 | allocate_dwo_file_hash_table (void) | |
8980 | { | |
8981 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8982 | ||
8983 | return htab_create_alloc_ex (41, | |
8984 | hash_dwo_file, | |
8985 | eq_dwo_file, | |
8986 | NULL, | |
8987 | &objfile->objfile_obstack, | |
8988 | hashtab_obstack_allocate, | |
8989 | dummy_obstack_deallocate); | |
8990 | } | |
8991 | ||
80626a55 DE |
8992 | /* Lookup DWO file DWO_NAME. */ |
8993 | ||
8994 | static void ** | |
0ac5b59e | 8995 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
8996 | { |
8997 | struct dwo_file find_entry; | |
8998 | void **slot; | |
8999 | ||
9000 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9001 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9002 | ||
9003 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9004 | find_entry.dwo_name = dwo_name; |
9005 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9006 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9007 | ||
9008 | return slot; | |
9009 | } | |
9010 | ||
3019eac3 DE |
9011 | static hashval_t |
9012 | hash_dwo_unit (const void *item) | |
9013 | { | |
9014 | const struct dwo_unit *dwo_unit = item; | |
9015 | ||
9016 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9017 | return dwo_unit->signature; | |
9018 | } | |
9019 | ||
9020 | static int | |
9021 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9022 | { | |
9023 | const struct dwo_unit *lhs = item_lhs; | |
9024 | const struct dwo_unit *rhs = item_rhs; | |
9025 | ||
9026 | /* The signature is assumed to be unique within the DWO file. | |
9027 | So while object file CU dwo_id's always have the value zero, | |
9028 | that's OK, assuming each object file DWO file has only one CU, | |
9029 | and that's the rule for now. */ | |
9030 | return lhs->signature == rhs->signature; | |
9031 | } | |
9032 | ||
9033 | /* Allocate a hash table for DWO CUs,TUs. | |
9034 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9035 | ||
9036 | static htab_t | |
9037 | allocate_dwo_unit_table (struct objfile *objfile) | |
9038 | { | |
9039 | /* Start out with a pretty small number. | |
9040 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9041 | return htab_create_alloc_ex (3, | |
9042 | hash_dwo_unit, | |
9043 | eq_dwo_unit, | |
9044 | NULL, | |
9045 | &objfile->objfile_obstack, | |
9046 | hashtab_obstack_allocate, | |
9047 | dummy_obstack_deallocate); | |
9048 | } | |
9049 | ||
80626a55 | 9050 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9051 | |
19c3d4c9 | 9052 | struct create_dwo_cu_data |
3019eac3 DE |
9053 | { |
9054 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9055 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9056 | }; |
9057 | ||
19c3d4c9 | 9058 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9059 | |
9060 | static void | |
19c3d4c9 DE |
9061 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9062 | const gdb_byte *info_ptr, | |
9063 | struct die_info *comp_unit_die, | |
9064 | int has_children, | |
9065 | void *datap) | |
3019eac3 DE |
9066 | { |
9067 | struct dwarf2_cu *cu = reader->cu; | |
9068 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9069 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9070 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9071 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9072 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9073 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9074 | struct attribute *attr; |
3019eac3 DE |
9075 | |
9076 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9077 | if (attr == NULL) | |
9078 | { | |
19c3d4c9 DE |
9079 | complaint (&symfile_complaints, |
9080 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9081 | " its dwo_id [in module %s]"), | |
9082 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9083 | return; |
9084 | } | |
9085 | ||
3019eac3 DE |
9086 | dwo_unit->dwo_file = dwo_file; |
9087 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9088 | dwo_unit->section = section; |
3019eac3 DE |
9089 | dwo_unit->offset = offset; |
9090 | dwo_unit->length = cu->per_cu->length; | |
9091 | ||
09406207 | 9092 | if (dwarf2_read_debug) |
4031ecc5 DE |
9093 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9094 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9095 | } |
9096 | ||
19c3d4c9 DE |
9097 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9098 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9099 | |
19c3d4c9 DE |
9100 | static struct dwo_unit * |
9101 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9102 | { |
9103 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9104 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9105 | bfd *abfd; | |
9106 | htab_t cu_htab; | |
d521ce57 | 9107 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9108 | struct create_dwo_cu_data create_dwo_cu_data; |
9109 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9110 | |
9111 | dwarf2_read_section (objfile, section); | |
9112 | info_ptr = section->buffer; | |
9113 | ||
9114 | if (info_ptr == NULL) | |
9115 | return NULL; | |
9116 | ||
9117 | /* We can't set abfd until now because the section may be empty or | |
9118 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9119 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9120 | |
09406207 | 9121 | if (dwarf2_read_debug) |
19c3d4c9 DE |
9122 | { |
9123 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9124 | get_section_name (section), |
9125 | get_section_file_name (section)); | |
19c3d4c9 | 9126 | } |
3019eac3 | 9127 | |
19c3d4c9 DE |
9128 | create_dwo_cu_data.dwo_file = dwo_file; |
9129 | dwo_unit = NULL; | |
3019eac3 DE |
9130 | |
9131 | end_ptr = info_ptr + section->size; | |
9132 | while (info_ptr < end_ptr) | |
9133 | { | |
9134 | struct dwarf2_per_cu_data per_cu; | |
9135 | ||
19c3d4c9 DE |
9136 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9137 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9138 | memset (&per_cu, 0, sizeof (per_cu)); |
9139 | per_cu.objfile = objfile; | |
9140 | per_cu.is_debug_types = 0; | |
9141 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9142 | per_cu.section = section; |
3019eac3 DE |
9143 | |
9144 | init_cutu_and_read_dies_no_follow (&per_cu, | |
9145 | &dwo_file->sections.abbrev, | |
9146 | dwo_file, | |
19c3d4c9 DE |
9147 | create_dwo_cu_reader, |
9148 | &create_dwo_cu_data); | |
9149 | ||
9150 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9151 | { | |
9152 | /* If we've already found one, complain. We only support one | |
9153 | because having more than one requires hacking the dwo_name of | |
9154 | each to match, which is highly unlikely to happen. */ | |
9155 | if (dwo_unit != NULL) | |
9156 | { | |
9157 | complaint (&symfile_complaints, | |
9158 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9159 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9160 | break; |
9161 | } | |
9162 | ||
9163 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9164 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9165 | } | |
3019eac3 DE |
9166 | |
9167 | info_ptr += per_cu.length; | |
9168 | } | |
9169 | ||
19c3d4c9 | 9170 | return dwo_unit; |
3019eac3 DE |
9171 | } |
9172 | ||
80626a55 DE |
9173 | /* DWP file .debug_{cu,tu}_index section format: |
9174 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9175 | ||
d2415c6c DE |
9176 | DWP Version 1: |
9177 | ||
80626a55 DE |
9178 | Both index sections have the same format, and serve to map a 64-bit |
9179 | signature to a set of section numbers. Each section begins with a header, | |
9180 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9181 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9182 | aligned at 8-byte boundaries in the file. | |
9183 | ||
d2415c6c DE |
9184 | The index section header consists of: |
9185 | ||
9186 | V, 32 bit version number | |
9187 | -, 32 bits unused | |
9188 | N, 32 bit number of compilation units or type units in the index | |
9189 | M, 32 bit number of slots in the hash table | |
80626a55 | 9190 | |
d2415c6c | 9191 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9192 | |
d2415c6c DE |
9193 | The hash table begins at offset 16 in the section, and consists of an array |
9194 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9195 | order of the application binary). Unused slots in the hash table are 0. | |
9196 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9197 | |
d2415c6c DE |
9198 | The parallel table begins immediately after the hash table |
9199 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9200 | array of 32-bit indexes (using the byte order of the application binary), | |
9201 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9202 | table contains a 32-bit index into the pool of section numbers. For unused | |
9203 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9204 | |
73869dc2 DE |
9205 | The pool of section numbers begins immediately following the hash table |
9206 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9207 | section numbers consists of an array of 32-bit words (using the byte order | |
9208 | of the application binary). Each item in the array is indexed starting | |
9209 | from 0. The hash table entry provides the index of the first section | |
9210 | number in the set. Additional section numbers in the set follow, and the | |
9211 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9212 | ||
9213 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9214 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9215 | be the second entry. Other members of the set may follow in any order. | |
9216 | ||
9217 | --- | |
9218 | ||
9219 | DWP Version 2: | |
9220 | ||
9221 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9222 | and the entries in the index tables are now offsets into these sections. | |
9223 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9224 | section. | |
9225 | ||
9226 | Index Section Contents: | |
9227 | Header | |
9228 | Hash Table of Signatures dwp_hash_table.hash_table | |
9229 | Parallel Table of Indices dwp_hash_table.unit_table | |
9230 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9231 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9232 | ||
9233 | The index section header consists of: | |
9234 | ||
9235 | V, 32 bit version number | |
9236 | L, 32 bit number of columns in the table of section offsets | |
9237 | N, 32 bit number of compilation units or type units in the index | |
9238 | M, 32 bit number of slots in the hash table | |
9239 | ||
9240 | Numbers are recorded using the byte order of the application binary. | |
9241 | ||
9242 | The hash table has the same format as version 1. | |
9243 | The parallel table of indices has the same format as version 1, | |
9244 | except that the entries are origin-1 indices into the table of sections | |
9245 | offsets and the table of section sizes. | |
9246 | ||
9247 | The table of offsets begins immediately following the parallel table | |
9248 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9249 | a two-dimensional array of 32-bit words (using the byte order of the | |
9250 | application binary), with L columns and N+1 rows, in row-major order. | |
9251 | Each row in the array is indexed starting from 0. The first row provides | |
9252 | a key to the remaining rows: each column in this row provides an identifier | |
9253 | for a debug section, and the offsets in the same column of subsequent rows | |
9254 | refer to that section. The section identifiers are: | |
9255 | ||
9256 | DW_SECT_INFO 1 .debug_info.dwo | |
9257 | DW_SECT_TYPES 2 .debug_types.dwo | |
9258 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9259 | DW_SECT_LINE 4 .debug_line.dwo | |
9260 | DW_SECT_LOC 5 .debug_loc.dwo | |
9261 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9262 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9263 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9264 | ||
9265 | The offsets provided by the CU and TU index sections are the base offsets | |
9266 | for the contributions made by each CU or TU to the corresponding section | |
9267 | in the package file. Each CU and TU header contains an abbrev_offset | |
9268 | field, used to find the abbreviations table for that CU or TU within the | |
9269 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9270 | be interpreted as relative to the base offset given in the index section. | |
9271 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9272 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9273 | and offsets into other debug sections obtained from DWARF attributes should | |
9274 | also be interpreted as relative to the corresponding base offset. | |
9275 | ||
9276 | The table of sizes begins immediately following the table of offsets. | |
9277 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9278 | with L columns and N rows, in row-major order. Each row in the array is | |
9279 | indexed starting from 1 (row 0 is shared by the two tables). | |
9280 | ||
9281 | --- | |
9282 | ||
9283 | Hash table lookup is handled the same in version 1 and 2: | |
9284 | ||
9285 | We assume that N and M will not exceed 2^32 - 1. | |
9286 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9287 | ||
d2415c6c DE |
9288 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9289 | in the hash table is located as follows: | |
80626a55 | 9290 | |
d2415c6c DE |
9291 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9292 | the low-order k bits all set to 1. | |
80626a55 | 9293 | |
d2415c6c | 9294 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9295 | |
d2415c6c DE |
9296 | 3) If the hash table entry at index H matches the signature, use that |
9297 | entry. If the hash table entry at index H is unused (all zeroes), | |
9298 | terminate the search: the signature is not present in the table. | |
80626a55 | 9299 | |
d2415c6c | 9300 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9301 | |
d2415c6c | 9302 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9303 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9304 | |
9305 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9306 | .debug_{info,types}.dwo in DWP_FILE. | |
9307 | Returns NULL if there isn't one. | |
9308 | Note: This function processes DWP files only, not DWO files. */ | |
9309 | ||
9310 | static struct dwp_hash_table * | |
9311 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9312 | { | |
9313 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9314 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9315 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9316 | struct dwarf2_section_info *index; |
73869dc2 | 9317 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9318 | struct dwp_hash_table *htab; |
9319 | ||
9320 | if (is_debug_types) | |
9321 | index = &dwp_file->sections.tu_index; | |
9322 | else | |
9323 | index = &dwp_file->sections.cu_index; | |
9324 | ||
9325 | if (dwarf2_section_empty_p (index)) | |
9326 | return NULL; | |
9327 | dwarf2_read_section (objfile, index); | |
9328 | ||
9329 | index_ptr = index->buffer; | |
9330 | index_end = index_ptr + index->size; | |
9331 | ||
9332 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9333 | index_ptr += 4; |
9334 | if (version == 2) | |
9335 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9336 | else | |
9337 | nr_columns = 0; | |
9338 | index_ptr += 4; | |
80626a55 DE |
9339 | nr_units = read_4_bytes (dbfd, index_ptr); |
9340 | index_ptr += 4; | |
9341 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9342 | index_ptr += 4; | |
9343 | ||
73869dc2 | 9344 | if (version != 1 && version != 2) |
80626a55 | 9345 | { |
21aa081e | 9346 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9347 | " [in module %s]"), |
21aa081e | 9348 | pulongest (version), dwp_file->name); |
80626a55 DE |
9349 | } |
9350 | if (nr_slots != (nr_slots & -nr_slots)) | |
9351 | { | |
21aa081e | 9352 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9353 | " is not power of 2 [in module %s]"), |
21aa081e | 9354 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9355 | } |
9356 | ||
9357 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9358 | htab->version = version; |
9359 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9360 | htab->nr_units = nr_units; |
9361 | htab->nr_slots = nr_slots; | |
9362 | htab->hash_table = index_ptr; | |
9363 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9364 | |
9365 | /* Exit early if the table is empty. */ | |
9366 | if (nr_slots == 0 || nr_units == 0 | |
9367 | || (version == 2 && nr_columns == 0)) | |
9368 | { | |
9369 | /* All must be zero. */ | |
9370 | if (nr_slots != 0 || nr_units != 0 | |
9371 | || (version == 2 && nr_columns != 0)) | |
9372 | { | |
9373 | complaint (&symfile_complaints, | |
9374 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9375 | " all zero [in modules %s]"), | |
9376 | dwp_file->name); | |
9377 | } | |
9378 | return htab; | |
9379 | } | |
9380 | ||
9381 | if (version == 1) | |
9382 | { | |
9383 | htab->section_pool.v1.indices = | |
9384 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9385 | /* It's harder to decide whether the section is too small in v1. | |
9386 | V1 is deprecated anyway so we punt. */ | |
9387 | } | |
9388 | else | |
9389 | { | |
9390 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9391 | int *ids = htab->section_pool.v2.section_ids; | |
9392 | /* Reverse map for error checking. */ | |
9393 | int ids_seen[DW_SECT_MAX + 1]; | |
9394 | int i; | |
9395 | ||
9396 | if (nr_columns < 2) | |
9397 | { | |
9398 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9399 | " in section table [in module %s]"), | |
9400 | dwp_file->name); | |
9401 | } | |
9402 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9403 | { | |
9404 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9405 | " in section table [in module %s]"), | |
9406 | dwp_file->name); | |
9407 | } | |
9408 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9409 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9410 | for (i = 0; i < nr_columns; ++i) | |
9411 | { | |
9412 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9413 | ||
9414 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9415 | { | |
9416 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9417 | " in section table [in module %s]"), | |
9418 | id, dwp_file->name); | |
9419 | } | |
9420 | if (ids_seen[id] != -1) | |
9421 | { | |
9422 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9423 | " id %d in section table [in module %s]"), | |
9424 | id, dwp_file->name); | |
9425 | } | |
9426 | ids_seen[id] = i; | |
9427 | ids[i] = id; | |
9428 | } | |
9429 | /* Must have exactly one info or types section. */ | |
9430 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9431 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9432 | != 1) | |
9433 | { | |
9434 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9435 | " DWO info/types section [in module %s]"), | |
9436 | dwp_file->name); | |
9437 | } | |
9438 | /* Must have an abbrev section. */ | |
9439 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9440 | { | |
9441 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9442 | " section [in module %s]"), | |
9443 | dwp_file->name); | |
9444 | } | |
9445 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9446 | htab->section_pool.v2.sizes = | |
9447 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9448 | * nr_units * nr_columns); | |
9449 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9450 | * nr_units * nr_columns)) | |
9451 | > index_end) | |
9452 | { | |
9453 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9454 | " [in module %s]"), | |
9455 | dwp_file->name); | |
9456 | } | |
9457 | } | |
80626a55 DE |
9458 | |
9459 | return htab; | |
9460 | } | |
9461 | ||
9462 | /* Update SECTIONS with the data from SECTP. | |
9463 | ||
9464 | This function is like the other "locate" section routines that are | |
9465 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9466 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9467 | |
9468 | The result is non-zero for success, or zero if an error was found. */ | |
9469 | ||
9470 | static int | |
73869dc2 DE |
9471 | locate_v1_virtual_dwo_sections (asection *sectp, |
9472 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9473 | { |
9474 | const struct dwop_section_names *names = &dwop_section_names; | |
9475 | ||
9476 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9477 | { | |
9478 | /* There can be only one. */ | |
73869dc2 | 9479 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9480 | return 0; |
73869dc2 | 9481 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9482 | sections->abbrev.size = bfd_get_section_size (sectp); |
9483 | } | |
9484 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9485 | || section_is_p (sectp->name, &names->types_dwo)) | |
9486 | { | |
9487 | /* There can be only one. */ | |
73869dc2 | 9488 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9489 | return 0; |
73869dc2 | 9490 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9491 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9492 | } | |
9493 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9494 | { | |
9495 | /* There can be only one. */ | |
73869dc2 | 9496 | if (sections->line.s.asection != NULL) |
80626a55 | 9497 | return 0; |
73869dc2 | 9498 | sections->line.s.asection = sectp; |
80626a55 DE |
9499 | sections->line.size = bfd_get_section_size (sectp); |
9500 | } | |
9501 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9502 | { | |
9503 | /* There can be only one. */ | |
73869dc2 | 9504 | if (sections->loc.s.asection != NULL) |
80626a55 | 9505 | return 0; |
73869dc2 | 9506 | sections->loc.s.asection = sectp; |
80626a55 DE |
9507 | sections->loc.size = bfd_get_section_size (sectp); |
9508 | } | |
9509 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9510 | { | |
9511 | /* There can be only one. */ | |
73869dc2 | 9512 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9513 | return 0; |
73869dc2 | 9514 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9515 | sections->macinfo.size = bfd_get_section_size (sectp); |
9516 | } | |
9517 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9518 | { | |
9519 | /* There can be only one. */ | |
73869dc2 | 9520 | if (sections->macro.s.asection != NULL) |
80626a55 | 9521 | return 0; |
73869dc2 | 9522 | sections->macro.s.asection = sectp; |
80626a55 DE |
9523 | sections->macro.size = bfd_get_section_size (sectp); |
9524 | } | |
9525 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9526 | { | |
9527 | /* There can be only one. */ | |
73869dc2 | 9528 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9529 | return 0; |
73869dc2 | 9530 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9531 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9532 | } | |
9533 | else | |
9534 | { | |
9535 | /* No other kind of section is valid. */ | |
9536 | return 0; | |
9537 | } | |
9538 | ||
9539 | return 1; | |
9540 | } | |
9541 | ||
73869dc2 DE |
9542 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9543 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9544 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9545 | This is for DWP version 1 files. */ | |
80626a55 DE |
9546 | |
9547 | static struct dwo_unit * | |
73869dc2 DE |
9548 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9549 | uint32_t unit_index, | |
9550 | const char *comp_dir, | |
9551 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
9552 | { |
9553 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
9554 | const struct dwp_hash_table *dwp_htab = |
9555 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
9556 | bfd *dbfd = dwp_file->dbfd; |
9557 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9558 | struct dwo_file *dwo_file; | |
9559 | struct dwo_unit *dwo_unit; | |
73869dc2 | 9560 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
9561 | void **dwo_file_slot; |
9562 | char *virtual_dwo_name; | |
9563 | struct dwarf2_section_info *cutu; | |
9564 | struct cleanup *cleanups; | |
9565 | int i; | |
9566 | ||
73869dc2 DE |
9567 | gdb_assert (dwp_file->version == 1); |
9568 | ||
80626a55 DE |
9569 | if (dwarf2_read_debug) |
9570 | { | |
73869dc2 | 9571 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 9572 | kind, |
73869dc2 | 9573 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
9574 | dwp_file->name); |
9575 | } | |
9576 | ||
19ac8c2e | 9577 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
9578 | Put a limit on the number of sections we look for so that bad data |
9579 | doesn't cause us to loop forever. */ | |
9580 | ||
73869dc2 | 9581 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
9582 | (1 /* .debug_info or .debug_types */ \ |
9583 | + 1 /* .debug_abbrev */ \ | |
9584 | + 1 /* .debug_line */ \ | |
9585 | + 1 /* .debug_loc */ \ | |
9586 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 9587 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
9588 | + 1 /* trailing zero */) |
9589 | ||
9590 | memset (§ions, 0, sizeof (sections)); | |
9591 | cleanups = make_cleanup (null_cleanup, 0); | |
9592 | ||
73869dc2 | 9593 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
9594 | { |
9595 | asection *sectp; | |
9596 | uint32_t section_nr = | |
9597 | read_4_bytes (dbfd, | |
73869dc2 DE |
9598 | dwp_htab->section_pool.v1.indices |
9599 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
9600 | |
9601 | if (section_nr == 0) | |
9602 | break; | |
9603 | if (section_nr >= dwp_file->num_sections) | |
9604 | { | |
9605 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
9606 | " [in module %s]"), | |
9607 | dwp_file->name); | |
9608 | } | |
9609 | ||
9610 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 9611 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
9612 | { |
9613 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
9614 | " [in module %s]"), | |
9615 | dwp_file->name); | |
9616 | } | |
9617 | } | |
9618 | ||
9619 | if (i < 2 | |
a32a8923 DE |
9620 | || dwarf2_section_empty_p (§ions.info_or_types) |
9621 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
9622 | { |
9623 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
9624 | " [in module %s]"), | |
9625 | dwp_file->name); | |
9626 | } | |
73869dc2 | 9627 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
9628 | { |
9629 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
9630 | " [in module %s]"), | |
9631 | dwp_file->name); | |
9632 | } | |
9633 | ||
9634 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9635 | have dwo_unit "live" in that. At least for now. | |
9636 | ||
9637 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 9638 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
9639 | file, we can combine them back into a virtual DWO file to save space |
9640 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
9641 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
9642 | ||
2792b94d PM |
9643 | virtual_dwo_name = |
9644 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
9645 | get_section_id (§ions.abbrev), |
9646 | get_section_id (§ions.line), | |
9647 | get_section_id (§ions.loc), | |
9648 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
9649 | make_cleanup (xfree, virtual_dwo_name); |
9650 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 9651 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
9652 | /* Create one if necessary. */ |
9653 | if (*dwo_file_slot == NULL) | |
9654 | { | |
9655 | if (dwarf2_read_debug) | |
9656 | { | |
9657 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9658 | virtual_dwo_name); | |
9659 | } | |
9660 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
9661 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
9662 | virtual_dwo_name, | |
9663 | strlen (virtual_dwo_name)); | |
9664 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
9665 | dwo_file->sections.abbrev = sections.abbrev; |
9666 | dwo_file->sections.line = sections.line; | |
9667 | dwo_file->sections.loc = sections.loc; | |
9668 | dwo_file->sections.macinfo = sections.macinfo; | |
9669 | dwo_file->sections.macro = sections.macro; | |
9670 | dwo_file->sections.str_offsets = sections.str_offsets; | |
9671 | /* The "str" section is global to the entire DWP file. */ | |
9672 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 9673 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
9674 | there's no need to record it in dwo_file. |
9675 | Also, we can't simply record type sections in dwo_file because | |
9676 | we record a pointer into the vector in dwo_unit. As we collect more | |
9677 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
9678 | for it, invalidating all copies of pointers into the previous |
9679 | contents. */ | |
80626a55 DE |
9680 | *dwo_file_slot = dwo_file; |
9681 | } | |
9682 | else | |
9683 | { | |
9684 | if (dwarf2_read_debug) | |
9685 | { | |
9686 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9687 | virtual_dwo_name); | |
9688 | } | |
9689 | dwo_file = *dwo_file_slot; | |
9690 | } | |
9691 | do_cleanups (cleanups); | |
9692 | ||
9693 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9694 | dwo_unit->dwo_file = dwo_file; | |
9695 | dwo_unit->signature = signature; | |
8a0459fd DE |
9696 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
9697 | sizeof (struct dwarf2_section_info)); | |
9698 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 9699 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
9700 | |
9701 | return dwo_unit; | |
9702 | } | |
9703 | ||
73869dc2 DE |
9704 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
9705 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
9706 | piece within that section used by a TU/CU, return a virtual section | |
9707 | of just that piece. */ | |
9708 | ||
9709 | static struct dwarf2_section_info | |
9710 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
9711 | bfd_size_type offset, bfd_size_type size) | |
9712 | { | |
9713 | struct dwarf2_section_info result; | |
9714 | asection *sectp; | |
9715 | ||
9716 | gdb_assert (section != NULL); | |
9717 | gdb_assert (!section->is_virtual); | |
9718 | ||
9719 | memset (&result, 0, sizeof (result)); | |
9720 | result.s.containing_section = section; | |
9721 | result.is_virtual = 1; | |
9722 | ||
9723 | if (size == 0) | |
9724 | return result; | |
9725 | ||
9726 | sectp = get_section_bfd_section (section); | |
9727 | ||
9728 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
9729 | bounds of the real section. This is a pretty-rare event, so just | |
9730 | flag an error (easier) instead of a warning and trying to cope. */ | |
9731 | if (sectp == NULL | |
9732 | || offset + size > bfd_get_section_size (sectp)) | |
9733 | { | |
9734 | bfd *abfd = sectp->owner; | |
9735 | ||
9736 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
9737 | " in section %s [in module %s]"), | |
9738 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
9739 | objfile_name (dwarf2_per_objfile->objfile)); | |
9740 | } | |
9741 | ||
9742 | result.virtual_offset = offset; | |
9743 | result.size = size; | |
9744 | return result; | |
9745 | } | |
9746 | ||
9747 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
9748 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9749 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9750 | This is for DWP version 2 files. */ | |
9751 | ||
9752 | static struct dwo_unit * | |
9753 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
9754 | uint32_t unit_index, | |
9755 | const char *comp_dir, | |
9756 | ULONGEST signature, int is_debug_types) | |
9757 | { | |
9758 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9759 | const struct dwp_hash_table *dwp_htab = | |
9760 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9761 | bfd *dbfd = dwp_file->dbfd; | |
9762 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9763 | struct dwo_file *dwo_file; | |
9764 | struct dwo_unit *dwo_unit; | |
9765 | struct virtual_v2_dwo_sections sections; | |
9766 | void **dwo_file_slot; | |
9767 | char *virtual_dwo_name; | |
9768 | struct dwarf2_section_info *cutu; | |
9769 | struct cleanup *cleanups; | |
9770 | int i; | |
9771 | ||
9772 | gdb_assert (dwp_file->version == 2); | |
9773 | ||
9774 | if (dwarf2_read_debug) | |
9775 | { | |
9776 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
9777 | kind, | |
9778 | pulongest (unit_index), hex_string (signature), | |
9779 | dwp_file->name); | |
9780 | } | |
9781 | ||
9782 | /* Fetch the section offsets of this DWO unit. */ | |
9783 | ||
9784 | memset (§ions, 0, sizeof (sections)); | |
9785 | cleanups = make_cleanup (null_cleanup, 0); | |
9786 | ||
9787 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
9788 | { | |
9789 | uint32_t offset = read_4_bytes (dbfd, | |
9790 | dwp_htab->section_pool.v2.offsets | |
9791 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9792 | + i) | |
9793 | * sizeof (uint32_t))); | |
9794 | uint32_t size = read_4_bytes (dbfd, | |
9795 | dwp_htab->section_pool.v2.sizes | |
9796 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9797 | + i) | |
9798 | * sizeof (uint32_t))); | |
9799 | ||
9800 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
9801 | { | |
9802 | case DW_SECT_INFO: | |
9803 | case DW_SECT_TYPES: | |
9804 | sections.info_or_types_offset = offset; | |
9805 | sections.info_or_types_size = size; | |
9806 | break; | |
9807 | case DW_SECT_ABBREV: | |
9808 | sections.abbrev_offset = offset; | |
9809 | sections.abbrev_size = size; | |
9810 | break; | |
9811 | case DW_SECT_LINE: | |
9812 | sections.line_offset = offset; | |
9813 | sections.line_size = size; | |
9814 | break; | |
9815 | case DW_SECT_LOC: | |
9816 | sections.loc_offset = offset; | |
9817 | sections.loc_size = size; | |
9818 | break; | |
9819 | case DW_SECT_STR_OFFSETS: | |
9820 | sections.str_offsets_offset = offset; | |
9821 | sections.str_offsets_size = size; | |
9822 | break; | |
9823 | case DW_SECT_MACINFO: | |
9824 | sections.macinfo_offset = offset; | |
9825 | sections.macinfo_size = size; | |
9826 | break; | |
9827 | case DW_SECT_MACRO: | |
9828 | sections.macro_offset = offset; | |
9829 | sections.macro_size = size; | |
9830 | break; | |
9831 | } | |
9832 | } | |
9833 | ||
9834 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9835 | have dwo_unit "live" in that. At least for now. | |
9836 | ||
9837 | The DWP file can be made up of a random collection of CUs and TUs. | |
9838 | However, for each CU + set of TUs that came from the same original DWO | |
9839 | file, we can combine them back into a virtual DWO file to save space | |
9840 | (fewer struct dwo_file objects to allocate). Remember that for really | |
9841 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
9842 | ||
9843 | virtual_dwo_name = | |
9844 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
9845 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
9846 | (long) (sections.line_size ? sections.line_offset : 0), | |
9847 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
9848 | (long) (sections.str_offsets_size | |
9849 | ? sections.str_offsets_offset : 0)); | |
9850 | make_cleanup (xfree, virtual_dwo_name); | |
9851 | /* Can we use an existing virtual DWO file? */ | |
9852 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
9853 | /* Create one if necessary. */ | |
9854 | if (*dwo_file_slot == NULL) | |
9855 | { | |
9856 | if (dwarf2_read_debug) | |
9857 | { | |
9858 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9859 | virtual_dwo_name); | |
9860 | } | |
9861 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
9862 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
9863 | virtual_dwo_name, | |
9864 | strlen (virtual_dwo_name)); | |
9865 | dwo_file->comp_dir = comp_dir; | |
9866 | dwo_file->sections.abbrev = | |
9867 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
9868 | sections.abbrev_offset, sections.abbrev_size); | |
9869 | dwo_file->sections.line = | |
9870 | create_dwp_v2_section (&dwp_file->sections.line, | |
9871 | sections.line_offset, sections.line_size); | |
9872 | dwo_file->sections.loc = | |
9873 | create_dwp_v2_section (&dwp_file->sections.loc, | |
9874 | sections.loc_offset, sections.loc_size); | |
9875 | dwo_file->sections.macinfo = | |
9876 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
9877 | sections.macinfo_offset, sections.macinfo_size); | |
9878 | dwo_file->sections.macro = | |
9879 | create_dwp_v2_section (&dwp_file->sections.macro, | |
9880 | sections.macro_offset, sections.macro_size); | |
9881 | dwo_file->sections.str_offsets = | |
9882 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
9883 | sections.str_offsets_offset, | |
9884 | sections.str_offsets_size); | |
9885 | /* The "str" section is global to the entire DWP file. */ | |
9886 | dwo_file->sections.str = dwp_file->sections.str; | |
9887 | /* The info or types section is assigned below to dwo_unit, | |
9888 | there's no need to record it in dwo_file. | |
9889 | Also, we can't simply record type sections in dwo_file because | |
9890 | we record a pointer into the vector in dwo_unit. As we collect more | |
9891 | types we'll grow the vector and eventually have to reallocate space | |
9892 | for it, invalidating all copies of pointers into the previous | |
9893 | contents. */ | |
9894 | *dwo_file_slot = dwo_file; | |
9895 | } | |
9896 | else | |
9897 | { | |
9898 | if (dwarf2_read_debug) | |
9899 | { | |
9900 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9901 | virtual_dwo_name); | |
9902 | } | |
9903 | dwo_file = *dwo_file_slot; | |
9904 | } | |
9905 | do_cleanups (cleanups); | |
9906 | ||
9907 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9908 | dwo_unit->dwo_file = dwo_file; | |
9909 | dwo_unit->signature = signature; | |
9910 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
9911 | sizeof (struct dwarf2_section_info)); | |
9912 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
9913 | ? &dwp_file->sections.types | |
9914 | : &dwp_file->sections.info, | |
9915 | sections.info_or_types_offset, | |
9916 | sections.info_or_types_size); | |
9917 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
9918 | ||
9919 | return dwo_unit; | |
9920 | } | |
9921 | ||
57d63ce2 DE |
9922 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
9923 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
9924 | |
9925 | static struct dwo_unit * | |
57d63ce2 DE |
9926 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
9927 | ULONGEST signature, int is_debug_types) | |
80626a55 | 9928 | { |
57d63ce2 DE |
9929 | const struct dwp_hash_table *dwp_htab = |
9930 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 9931 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 9932 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
9933 | uint32_t hash = signature & mask; |
9934 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
9935 | unsigned int i; | |
9936 | void **slot; | |
9937 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
9938 | ||
9939 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
9940 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
9941 | slot = htab_find_slot (is_debug_types |
9942 | ? dwp_file->loaded_tus | |
9943 | : dwp_file->loaded_cus, | |
9944 | &find_dwo_cu, INSERT); | |
80626a55 DE |
9945 | |
9946 | if (*slot != NULL) | |
9947 | return *slot; | |
9948 | ||
9949 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 9950 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
9951 | { |
9952 | ULONGEST signature_in_table; | |
9953 | ||
9954 | signature_in_table = | |
57d63ce2 | 9955 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
9956 | if (signature_in_table == signature) |
9957 | { | |
57d63ce2 DE |
9958 | uint32_t unit_index = |
9959 | read_4_bytes (dbfd, | |
9960 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 9961 | |
73869dc2 DE |
9962 | if (dwp_file->version == 1) |
9963 | { | |
9964 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
9965 | comp_dir, signature, | |
9966 | is_debug_types); | |
9967 | } | |
9968 | else | |
9969 | { | |
9970 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
9971 | comp_dir, signature, | |
9972 | is_debug_types); | |
9973 | } | |
80626a55 DE |
9974 | return *slot; |
9975 | } | |
9976 | if (signature_in_table == 0) | |
9977 | return NULL; | |
9978 | hash = (hash + hash2) & mask; | |
9979 | } | |
9980 | ||
9981 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
9982 | " [in module %s]"), | |
9983 | dwp_file->name); | |
9984 | } | |
9985 | ||
ab5088bf | 9986 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
9987 | Open the file specified by FILE_NAME and hand it off to BFD for |
9988 | preliminary analysis. Return a newly initialized bfd *, which | |
9989 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 9990 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
9991 | SEARCH_CWD is true if the current directory is to be searched. |
9992 | It will be searched before debug-file-directory. | |
9993 | If unable to find/open the file, return NULL. | |
3019eac3 DE |
9994 | NOTE: This function is derived from symfile_bfd_open. */ |
9995 | ||
9996 | static bfd * | |
6ac97d4c | 9997 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
9998 | { |
9999 | bfd *sym_bfd; | |
80626a55 | 10000 | int desc, flags; |
3019eac3 | 10001 | char *absolute_name; |
9c02c129 DE |
10002 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10003 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10004 | to debug_file_directory. */ | |
10005 | char *search_path; | |
10006 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10007 | ||
6ac97d4c DE |
10008 | if (search_cwd) |
10009 | { | |
10010 | if (*debug_file_directory != '\0') | |
10011 | search_path = concat (".", dirname_separator_string, | |
10012 | debug_file_directory, NULL); | |
10013 | else | |
10014 | search_path = xstrdup ("."); | |
10015 | } | |
9c02c129 | 10016 | else |
6ac97d4c | 10017 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10018 | |
492c0ab7 | 10019 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10020 | if (is_dwp) |
10021 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10022 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10023 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10024 | xfree (search_path); |
3019eac3 DE |
10025 | if (desc < 0) |
10026 | return NULL; | |
10027 | ||
bb397797 | 10028 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10029 | xfree (absolute_name); |
9c02c129 DE |
10030 | if (sym_bfd == NULL) |
10031 | return NULL; | |
3019eac3 DE |
10032 | bfd_set_cacheable (sym_bfd, 1); |
10033 | ||
10034 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10035 | { | |
cbb099e8 | 10036 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10037 | return NULL; |
10038 | } | |
10039 | ||
3019eac3 DE |
10040 | return sym_bfd; |
10041 | } | |
10042 | ||
ab5088bf | 10043 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10044 | COMP_DIR is the DW_AT_comp_dir attribute. |
10045 | The result is the bfd handle of the file. | |
10046 | If there is a problem finding or opening the file, return NULL. | |
10047 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10048 | same as symfile_bfd_open. */ | |
10049 | ||
10050 | static bfd * | |
ab5088bf | 10051 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10052 | { |
10053 | bfd *abfd; | |
3019eac3 | 10054 | |
80626a55 | 10055 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10056 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10057 | |
10058 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10059 | ||
10060 | if (comp_dir != NULL) | |
10061 | { | |
80626a55 | 10062 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10063 | |
10064 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10065 | search path, which seems useful. */ | |
6ac97d4c | 10066 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10067 | xfree (path_to_try); |
10068 | if (abfd != NULL) | |
10069 | return abfd; | |
10070 | } | |
10071 | ||
10072 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10073 | is a list of paths. */ | |
10074 | ||
10075 | if (*debug_file_directory == '\0') | |
10076 | return NULL; | |
10077 | ||
6ac97d4c | 10078 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10079 | } |
10080 | ||
80626a55 DE |
10081 | /* This function is mapped across the sections and remembers the offset and |
10082 | size of each of the DWO debugging sections we are interested in. */ | |
10083 | ||
10084 | static void | |
10085 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10086 | { | |
10087 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10088 | const struct dwop_section_names *names = &dwop_section_names; | |
10089 | ||
10090 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10091 | { | |
73869dc2 | 10092 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10093 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10094 | } | |
10095 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10096 | { | |
73869dc2 | 10097 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10098 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10099 | } | |
10100 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10101 | { | |
73869dc2 | 10102 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10103 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10104 | } | |
10105 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10106 | { | |
73869dc2 | 10107 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10108 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10109 | } | |
10110 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10111 | { | |
73869dc2 | 10112 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10113 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10114 | } | |
10115 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10116 | { | |
73869dc2 | 10117 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10118 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10119 | } | |
10120 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10121 | { | |
73869dc2 | 10122 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10123 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10124 | } | |
10125 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10126 | { | |
73869dc2 | 10127 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10128 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10129 | } | |
10130 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10131 | { | |
10132 | struct dwarf2_section_info type_section; | |
10133 | ||
10134 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10135 | type_section.s.asection = sectp; |
80626a55 DE |
10136 | type_section.size = bfd_get_section_size (sectp); |
10137 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10138 | &type_section); | |
10139 | } | |
10140 | } | |
10141 | ||
ab5088bf | 10142 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10143 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10144 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10145 | |
10146 | static struct dwo_file * | |
0ac5b59e DE |
10147 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10148 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10149 | { |
10150 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10151 | struct dwo_file *dwo_file; |
10152 | bfd *dbfd; | |
3019eac3 DE |
10153 | struct cleanup *cleanups; |
10154 | ||
ab5088bf | 10155 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10156 | if (dbfd == NULL) |
10157 | { | |
10158 | if (dwarf2_read_debug) | |
10159 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
10160 | return NULL; | |
10161 | } | |
10162 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10163 | dwo_file->dwo_name = dwo_name; |
10164 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10165 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10166 | |
10167 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10168 | ||
80626a55 | 10169 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10170 | |
19c3d4c9 | 10171 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10172 | |
10173 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10174 | dwo_file->sections.types); | |
10175 | ||
10176 | discard_cleanups (cleanups); | |
10177 | ||
80626a55 DE |
10178 | if (dwarf2_read_debug) |
10179 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
10180 | ||
3019eac3 DE |
10181 | return dwo_file; |
10182 | } | |
10183 | ||
80626a55 | 10184 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10185 | size of each of the DWP debugging sections common to version 1 and 2 that |
10186 | we are interested in. */ | |
3019eac3 | 10187 | |
80626a55 | 10188 | static void |
73869dc2 DE |
10189 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10190 | void *dwp_file_ptr) | |
3019eac3 | 10191 | { |
80626a55 DE |
10192 | struct dwp_file *dwp_file = dwp_file_ptr; |
10193 | const struct dwop_section_names *names = &dwop_section_names; | |
10194 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10195 | |
80626a55 | 10196 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10197 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10198 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10199 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10200 | |
80626a55 DE |
10201 | /* Look for specific sections that we need. */ |
10202 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10203 | { | |
73869dc2 | 10204 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10205 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10206 | } | |
10207 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10208 | { | |
73869dc2 | 10209 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10210 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10211 | } | |
10212 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10213 | { | |
73869dc2 | 10214 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10215 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10216 | } | |
10217 | } | |
3019eac3 | 10218 | |
73869dc2 DE |
10219 | /* This function is mapped across the sections and remembers the offset and |
10220 | size of each of the DWP version 2 debugging sections that we are interested | |
10221 | in. This is split into a separate function because we don't know if we | |
10222 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10223 | ||
10224 | static void | |
10225 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10226 | { | |
10227 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10228 | const struct dwop_section_names *names = &dwop_section_names; | |
10229 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10230 | ||
10231 | /* Record the ELF section number for later lookup: this is what the | |
10232 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10233 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10234 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10235 | ||
10236 | /* Look for specific sections that we need. */ | |
10237 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10238 | { | |
10239 | dwp_file->sections.abbrev.s.asection = sectp; | |
10240 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10241 | } | |
10242 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10243 | { | |
10244 | dwp_file->sections.info.s.asection = sectp; | |
10245 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10246 | } | |
10247 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10248 | { | |
10249 | dwp_file->sections.line.s.asection = sectp; | |
10250 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10251 | } | |
10252 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10253 | { | |
10254 | dwp_file->sections.loc.s.asection = sectp; | |
10255 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10256 | } | |
10257 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10258 | { | |
10259 | dwp_file->sections.macinfo.s.asection = sectp; | |
10260 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10261 | } | |
10262 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10263 | { | |
10264 | dwp_file->sections.macro.s.asection = sectp; | |
10265 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10266 | } | |
10267 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10268 | { | |
10269 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10270 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10271 | } | |
10272 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10273 | { | |
10274 | dwp_file->sections.types.s.asection = sectp; | |
10275 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10276 | } | |
10277 | } | |
10278 | ||
80626a55 | 10279 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10280 | |
80626a55 DE |
10281 | static hashval_t |
10282 | hash_dwp_loaded_cutus (const void *item) | |
10283 | { | |
10284 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10285 | |
80626a55 DE |
10286 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10287 | return dwo_unit->signature; | |
3019eac3 DE |
10288 | } |
10289 | ||
80626a55 | 10290 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10291 | |
80626a55 DE |
10292 | static int |
10293 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10294 | { |
80626a55 DE |
10295 | const struct dwo_unit *dua = a; |
10296 | const struct dwo_unit *dub = b; | |
3019eac3 | 10297 | |
80626a55 DE |
10298 | return dua->signature == dub->signature; |
10299 | } | |
3019eac3 | 10300 | |
80626a55 | 10301 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10302 | |
80626a55 DE |
10303 | static htab_t |
10304 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10305 | { | |
10306 | return htab_create_alloc_ex (3, | |
10307 | hash_dwp_loaded_cutus, | |
10308 | eq_dwp_loaded_cutus, | |
10309 | NULL, | |
10310 | &objfile->objfile_obstack, | |
10311 | hashtab_obstack_allocate, | |
10312 | dummy_obstack_deallocate); | |
10313 | } | |
3019eac3 | 10314 | |
ab5088bf DE |
10315 | /* Try to open DWP file FILE_NAME. |
10316 | The result is the bfd handle of the file. | |
10317 | If there is a problem finding or opening the file, return NULL. | |
10318 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10319 | same as symfile_bfd_open. */ | |
10320 | ||
10321 | static bfd * | |
10322 | open_dwp_file (const char *file_name) | |
10323 | { | |
6ac97d4c DE |
10324 | bfd *abfd; |
10325 | ||
10326 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10327 | if (abfd != NULL) | |
10328 | return abfd; | |
10329 | ||
10330 | /* Work around upstream bug 15652. | |
10331 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10332 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10333 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10334 | of the executable's path may have discarded the needed info. | |
10335 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10336 | .gnu_debuglink, but that doesn't exist yet.] | |
10337 | Strip the directory from FILE_NAME and search again. */ | |
10338 | if (*debug_file_directory != '\0') | |
10339 | { | |
10340 | /* Don't implicitly search the current directory here. | |
10341 | If the user wants to search "." to handle this case, | |
10342 | it must be added to debug-file-directory. */ | |
10343 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10344 | 0 /*search_cwd*/); | |
10345 | } | |
10346 | ||
10347 | return NULL; | |
ab5088bf DE |
10348 | } |
10349 | ||
80626a55 DE |
10350 | /* Initialize the use of the DWP file for the current objfile. |
10351 | By convention the name of the DWP file is ${objfile}.dwp. | |
10352 | The result is NULL if it can't be found. */ | |
a766d390 | 10353 | |
80626a55 | 10354 | static struct dwp_file * |
ab5088bf | 10355 | open_and_init_dwp_file (void) |
80626a55 DE |
10356 | { |
10357 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10358 | struct dwp_file *dwp_file; | |
10359 | char *dwp_name; | |
10360 | bfd *dbfd; | |
10361 | struct cleanup *cleanups; | |
10362 | ||
82bf32bc JK |
10363 | /* Try to find first .dwp for the binary file before any symbolic links |
10364 | resolving. */ | |
10365 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10366 | cleanups = make_cleanup (xfree, dwp_name); |
10367 | ||
ab5088bf | 10368 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10369 | if (dbfd == NULL |
10370 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10371 | { | |
10372 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10373 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10374 | make_cleanup (xfree, dwp_name); | |
10375 | dbfd = open_dwp_file (dwp_name); | |
10376 | } | |
10377 | ||
80626a55 DE |
10378 | if (dbfd == NULL) |
10379 | { | |
10380 | if (dwarf2_read_debug) | |
10381 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
10382 | do_cleanups (cleanups); | |
10383 | return NULL; | |
3019eac3 | 10384 | } |
80626a55 | 10385 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10386 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10387 | dwp_file->dbfd = dbfd; |
10388 | do_cleanups (cleanups); | |
c906108c | 10389 | |
80626a55 DE |
10390 | /* +1: section 0 is unused */ |
10391 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10392 | dwp_file->elf_sections = | |
10393 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10394 | dwp_file->num_sections, asection *); | |
10395 | ||
73869dc2 | 10396 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10397 | |
10398 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10399 | ||
10400 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10401 | ||
73869dc2 DE |
10402 | /* The DWP file version is stored in the hash table. Oh well. */ |
10403 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10404 | { | |
10405 | /* Technically speaking, we should try to limp along, but this is | |
10406 | pretty bizarre. */ | |
10407 | error (_("Dwarf Error: DWP file CU version %d doesn't match" | |
10408 | " TU version %d [in DWP file %s]"), | |
10409 | dwp_file->cus->version, dwp_file->tus->version, dwp_name); | |
10410 | } | |
10411 | dwp_file->version = dwp_file->cus->version; | |
10412 | ||
10413 | if (dwp_file->version == 2) | |
10414 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10415 | ||
19ac8c2e DE |
10416 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10417 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10418 | |
80626a55 DE |
10419 | if (dwarf2_read_debug) |
10420 | { | |
10421 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10422 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10423 | " %s CUs, %s TUs\n", |
10424 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10425 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10426 | } |
10427 | ||
10428 | return dwp_file; | |
3019eac3 | 10429 | } |
c906108c | 10430 | |
ab5088bf DE |
10431 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10432 | ||
10433 | static struct dwp_file * | |
10434 | get_dwp_file (void) | |
10435 | { | |
10436 | if (! dwarf2_per_objfile->dwp_checked) | |
10437 | { | |
10438 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10439 | dwarf2_per_objfile->dwp_checked = 1; | |
10440 | } | |
10441 | return dwarf2_per_objfile->dwp_file; | |
10442 | } | |
10443 | ||
80626a55 DE |
10444 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10445 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10446 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10447 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10448 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10449 | ||
10450 | This is called, for example, when wanting to read a variable with a | |
10451 | complex location. Therefore we don't want to do file i/o for every call. | |
10452 | Therefore we don't want to look for a DWO file on every call. | |
10453 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10454 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10455 | for a DWO file. | |
10456 | ||
1c658ad5 | 10457 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10458 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10459 | |
3019eac3 | 10460 | static struct dwo_unit * |
80626a55 DE |
10461 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10462 | const char *dwo_name, const char *comp_dir, | |
10463 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10464 | { |
10465 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10466 | const char *kind = is_debug_types ? "TU" : "CU"; |
10467 | void **dwo_file_slot; | |
3019eac3 | 10468 | struct dwo_file *dwo_file; |
80626a55 | 10469 | struct dwp_file *dwp_file; |
cb1df416 | 10470 | |
6a506a2d DE |
10471 | /* First see if there's a DWP file. |
10472 | If we have a DWP file but didn't find the DWO inside it, don't | |
10473 | look for the original DWO file. It makes gdb behave differently | |
10474 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10475 | |
ab5088bf | 10476 | dwp_file = get_dwp_file (); |
80626a55 | 10477 | if (dwp_file != NULL) |
cf2c3c16 | 10478 | { |
80626a55 DE |
10479 | const struct dwp_hash_table *dwp_htab = |
10480 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10481 | ||
10482 | if (dwp_htab != NULL) | |
10483 | { | |
10484 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10485 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10486 | signature, is_debug_types); | |
80626a55 DE |
10487 | |
10488 | if (dwo_cutu != NULL) | |
10489 | { | |
10490 | if (dwarf2_read_debug) | |
10491 | { | |
10492 | fprintf_unfiltered (gdb_stdlog, | |
10493 | "Virtual DWO %s %s found: @%s\n", | |
10494 | kind, hex_string (signature), | |
10495 | host_address_to_string (dwo_cutu)); | |
10496 | } | |
10497 | return dwo_cutu; | |
10498 | } | |
10499 | } | |
10500 | } | |
6a506a2d | 10501 | else |
80626a55 | 10502 | { |
6a506a2d | 10503 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10504 | |
6a506a2d DE |
10505 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10506 | if (*dwo_file_slot == NULL) | |
80626a55 | 10507 | { |
6a506a2d DE |
10508 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10509 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10510 | } |
6a506a2d DE |
10511 | /* NOTE: This will be NULL if unable to open the file. */ |
10512 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10513 | |
6a506a2d | 10514 | if (dwo_file != NULL) |
19c3d4c9 | 10515 | { |
6a506a2d DE |
10516 | struct dwo_unit *dwo_cutu = NULL; |
10517 | ||
10518 | if (is_debug_types && dwo_file->tus) | |
10519 | { | |
10520 | struct dwo_unit find_dwo_cutu; | |
10521 | ||
10522 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10523 | find_dwo_cutu.signature = signature; | |
10524 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10525 | } | |
10526 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10527 | { |
6a506a2d DE |
10528 | if (signature == dwo_file->cu->signature) |
10529 | dwo_cutu = dwo_file->cu; | |
10530 | } | |
10531 | ||
10532 | if (dwo_cutu != NULL) | |
10533 | { | |
10534 | if (dwarf2_read_debug) | |
10535 | { | |
10536 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10537 | kind, dwo_name, hex_string (signature), | |
10538 | host_address_to_string (dwo_cutu)); | |
10539 | } | |
10540 | return dwo_cutu; | |
80626a55 DE |
10541 | } |
10542 | } | |
2e276125 | 10543 | } |
9cdd5dbd | 10544 | |
80626a55 DE |
10545 | /* We didn't find it. This could mean a dwo_id mismatch, or |
10546 | someone deleted the DWO/DWP file, or the search path isn't set up | |
10547 | correctly to find the file. */ | |
10548 | ||
10549 | if (dwarf2_read_debug) | |
10550 | { | |
10551 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
10552 | kind, dwo_name, hex_string (signature)); | |
10553 | } | |
3019eac3 | 10554 | |
6656a72d DE |
10555 | /* This is a warning and not a complaint because it can be caused by |
10556 | pilot error (e.g., user accidentally deleting the DWO). */ | |
10557 | warning (_("Could not find DWO %s %s(%s) referenced by %s at offset 0x%x" | |
10558 | " [in module %s]"), | |
10559 | kind, dwo_name, hex_string (signature), | |
10560 | this_unit->is_debug_types ? "TU" : "CU", | |
4262abfb | 10561 | this_unit->offset.sect_off, objfile_name (objfile)); |
3019eac3 | 10562 | return NULL; |
5fb290d7 DJ |
10563 | } |
10564 | ||
80626a55 DE |
10565 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
10566 | See lookup_dwo_cutu_unit for details. */ | |
10567 | ||
10568 | static struct dwo_unit * | |
10569 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
10570 | const char *dwo_name, const char *comp_dir, | |
10571 | ULONGEST signature) | |
10572 | { | |
10573 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
10574 | } | |
10575 | ||
10576 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
10577 | See lookup_dwo_cutu_unit for details. */ | |
10578 | ||
10579 | static struct dwo_unit * | |
10580 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
10581 | const char *dwo_name, const char *comp_dir) | |
10582 | { | |
10583 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
10584 | } | |
10585 | ||
89e63ee4 DE |
10586 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
10587 | ||
10588 | static int | |
10589 | queue_and_load_dwo_tu (void **slot, void *info) | |
10590 | { | |
10591 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
10592 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
10593 | ULONGEST signature = dwo_unit->signature; | |
10594 | struct signatured_type *sig_type = | |
10595 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
10596 | ||
10597 | if (sig_type != NULL) | |
10598 | { | |
10599 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
10600 | ||
10601 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
10602 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
10603 | while processing PER_CU. */ | |
10604 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
10605 | load_full_type_unit (sig_cu); | |
10606 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
10607 | } | |
10608 | ||
10609 | return 1; | |
10610 | } | |
10611 | ||
10612 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
10613 | The DWO may have the only definition of the type, though it may not be | |
10614 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
10615 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
10616 | ||
10617 | static void | |
10618 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
10619 | { | |
10620 | struct dwo_unit *dwo_unit; | |
10621 | struct dwo_file *dwo_file; | |
10622 | ||
10623 | gdb_assert (!per_cu->is_debug_types); | |
10624 | gdb_assert (get_dwp_file () == NULL); | |
10625 | gdb_assert (per_cu->cu != NULL); | |
10626 | ||
10627 | dwo_unit = per_cu->cu->dwo_unit; | |
10628 | gdb_assert (dwo_unit != NULL); | |
10629 | ||
10630 | dwo_file = dwo_unit->dwo_file; | |
10631 | if (dwo_file->tus != NULL) | |
10632 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
10633 | } | |
10634 | ||
3019eac3 DE |
10635 | /* Free all resources associated with DWO_FILE. |
10636 | Close the DWO file and munmap the sections. | |
10637 | All memory should be on the objfile obstack. */ | |
348e048f DE |
10638 | |
10639 | static void | |
3019eac3 | 10640 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 10641 | { |
3019eac3 DE |
10642 | int ix; |
10643 | struct dwarf2_section_info *section; | |
348e048f | 10644 | |
5c6fa7ab | 10645 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 10646 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 10647 | |
3019eac3 DE |
10648 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
10649 | } | |
348e048f | 10650 | |
3019eac3 | 10651 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 10652 | |
3019eac3 DE |
10653 | static void |
10654 | free_dwo_file_cleanup (void *arg) | |
10655 | { | |
10656 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
10657 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 10658 | |
3019eac3 DE |
10659 | free_dwo_file (dwo_file, objfile); |
10660 | } | |
348e048f | 10661 | |
3019eac3 | 10662 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 10663 | |
3019eac3 DE |
10664 | static int |
10665 | free_dwo_file_from_slot (void **slot, void *info) | |
10666 | { | |
10667 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
10668 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 10669 | |
3019eac3 | 10670 | free_dwo_file (dwo_file, objfile); |
348e048f | 10671 | |
3019eac3 DE |
10672 | return 1; |
10673 | } | |
348e048f | 10674 | |
3019eac3 | 10675 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 10676 | |
3019eac3 DE |
10677 | static void |
10678 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
10679 | { | |
10680 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 10681 | } |
3019eac3 DE |
10682 | \f |
10683 | /* Read in various DIEs. */ | |
348e048f | 10684 | |
d389af10 JK |
10685 | /* qsort helper for inherit_abstract_dies. */ |
10686 | ||
10687 | static int | |
10688 | unsigned_int_compar (const void *ap, const void *bp) | |
10689 | { | |
10690 | unsigned int a = *(unsigned int *) ap; | |
10691 | unsigned int b = *(unsigned int *) bp; | |
10692 | ||
10693 | return (a > b) - (b > a); | |
10694 | } | |
10695 | ||
10696 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
10697 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
10698 | already referenced by DW_AT_abstract_origin from the children of the | |
10699 | current DIE. */ | |
d389af10 JK |
10700 | |
10701 | static void | |
10702 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
10703 | { | |
10704 | struct die_info *child_die; | |
10705 | unsigned die_children_count; | |
10706 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
10707 | sect_offset *offsets; |
10708 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
10709 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
10710 | struct die_info *origin_die; | |
10711 | /* Iterator of the ORIGIN_DIE children. */ | |
10712 | struct die_info *origin_child_die; | |
10713 | struct cleanup *cleanups; | |
10714 | struct attribute *attr; | |
cd02d79d PA |
10715 | struct dwarf2_cu *origin_cu; |
10716 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
10717 | |
10718 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
10719 | if (!attr) | |
10720 | return; | |
10721 | ||
cd02d79d PA |
10722 | /* Note that following die references may follow to a die in a |
10723 | different cu. */ | |
10724 | ||
10725 | origin_cu = cu; | |
10726 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
10727 | ||
10728 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
10729 | symbols in. */ | |
10730 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
10731 | origin_cu->list_in_scope = cu->list_in_scope; | |
10732 | ||
edb3359d DJ |
10733 | if (die->tag != origin_die->tag |
10734 | && !(die->tag == DW_TAG_inlined_subroutine | |
10735 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10736 | complaint (&symfile_complaints, |
10737 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 10738 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
10739 | |
10740 | child_die = die->child; | |
10741 | die_children_count = 0; | |
10742 | while (child_die && child_die->tag) | |
10743 | { | |
10744 | child_die = sibling_die (child_die); | |
10745 | die_children_count++; | |
10746 | } | |
10747 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
10748 | cleanups = make_cleanup (xfree, offsets); | |
10749 | ||
10750 | offsets_end = offsets; | |
10751 | child_die = die->child; | |
10752 | while (child_die && child_die->tag) | |
10753 | { | |
c38f313d DJ |
10754 | /* For each CHILD_DIE, find the corresponding child of |
10755 | ORIGIN_DIE. If there is more than one layer of | |
10756 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
10757 | but GCC versions at least through 4.4 generate this (GCC PR | |
10758 | 40573). */ | |
10759 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 10760 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 10761 | |
c38f313d DJ |
10762 | while (1) |
10763 | { | |
cd02d79d PA |
10764 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
10765 | child_origin_cu); | |
c38f313d DJ |
10766 | if (attr == NULL) |
10767 | break; | |
cd02d79d PA |
10768 | child_origin_die = follow_die_ref (child_origin_die, attr, |
10769 | &child_origin_cu); | |
c38f313d DJ |
10770 | } |
10771 | ||
d389af10 JK |
10772 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
10773 | counterpart may exist. */ | |
c38f313d | 10774 | if (child_origin_die != child_die) |
d389af10 | 10775 | { |
edb3359d DJ |
10776 | if (child_die->tag != child_origin_die->tag |
10777 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
10778 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10779 | complaint (&symfile_complaints, |
10780 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10781 | "different tags"), child_die->offset.sect_off, |
10782 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10783 | if (child_origin_die->parent != origin_die) |
10784 | complaint (&symfile_complaints, | |
10785 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10786 | "different parents"), child_die->offset.sect_off, |
10787 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10788 | else |
10789 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
10790 | } |
10791 | child_die = sibling_die (child_die); | |
10792 | } | |
10793 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
10794 | unsigned_int_compar); | |
10795 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 10796 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
10797 | complaint (&symfile_complaints, |
10798 | _("Multiple children of DIE 0x%x refer " | |
10799 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 10800 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
10801 | |
10802 | offsetp = offsets; | |
10803 | origin_child_die = origin_die->child; | |
10804 | while (origin_child_die && origin_child_die->tag) | |
10805 | { | |
10806 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
10807 | while (offsetp < offsets_end |
10808 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 10809 | offsetp++; |
b64f50a1 JK |
10810 | if (offsetp >= offsets_end |
10811 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
10812 | { |
10813 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 10814 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
10815 | } |
10816 | origin_child_die = sibling_die (origin_child_die); | |
10817 | } | |
cd02d79d | 10818 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
10819 | |
10820 | do_cleanups (cleanups); | |
10821 | } | |
10822 | ||
c906108c | 10823 | static void |
e7c27a73 | 10824 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10825 | { |
e7c27a73 | 10826 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 10827 | struct context_stack *new; |
c906108c SS |
10828 | CORE_ADDR lowpc; |
10829 | CORE_ADDR highpc; | |
10830 | struct die_info *child_die; | |
edb3359d | 10831 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 10832 | const char *name; |
e142c38c | 10833 | CORE_ADDR baseaddr; |
801e3a5b | 10834 | struct block *block; |
edb3359d | 10835 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
10836 | VEC (symbolp) *template_args = NULL; |
10837 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
10838 | |
10839 | if (inlined_func) | |
10840 | { | |
10841 | /* If we do not have call site information, we can't show the | |
10842 | caller of this inlined function. That's too confusing, so | |
10843 | only use the scope for local variables. */ | |
10844 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
10845 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
10846 | if (call_line == NULL || call_file == NULL) | |
10847 | { | |
10848 | read_lexical_block_scope (die, cu); | |
10849 | return; | |
10850 | } | |
10851 | } | |
c906108c | 10852 | |
e142c38c DJ |
10853 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
10854 | ||
94af9270 | 10855 | name = dwarf2_name (die, cu); |
c906108c | 10856 | |
e8d05480 JB |
10857 | /* Ignore functions with missing or empty names. These are actually |
10858 | illegal according to the DWARF standard. */ | |
10859 | if (name == NULL) | |
10860 | { | |
10861 | complaint (&symfile_complaints, | |
b64f50a1 JK |
10862 | _("missing name for subprogram DIE at %d"), |
10863 | die->offset.sect_off); | |
e8d05480 JB |
10864 | return; |
10865 | } | |
10866 | ||
10867 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
10868 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
10869 | { | |
ae4d0c03 PM |
10870 | attr = dwarf2_attr (die, DW_AT_external, cu); |
10871 | if (!attr || !DW_UNSND (attr)) | |
10872 | complaint (&symfile_complaints, | |
3e43a32a MS |
10873 | _("cannot get low and high bounds " |
10874 | "for subprogram DIE at %d"), | |
b64f50a1 | 10875 | die->offset.sect_off); |
e8d05480 JB |
10876 | return; |
10877 | } | |
c906108c SS |
10878 | |
10879 | lowpc += baseaddr; | |
10880 | highpc += baseaddr; | |
10881 | ||
34eaf542 TT |
10882 | /* If we have any template arguments, then we must allocate a |
10883 | different sort of symbol. */ | |
10884 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
10885 | { | |
10886 | if (child_die->tag == DW_TAG_template_type_param | |
10887 | || child_die->tag == DW_TAG_template_value_param) | |
10888 | { | |
e623cf5d | 10889 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
10890 | templ_func->base.is_cplus_template_function = 1; |
10891 | break; | |
10892 | } | |
10893 | } | |
10894 | ||
c906108c | 10895 | new = push_context (0, lowpc); |
34eaf542 TT |
10896 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
10897 | (struct symbol *) templ_func); | |
4c2df51b | 10898 | |
4cecd739 DJ |
10899 | /* If there is a location expression for DW_AT_frame_base, record |
10900 | it. */ | |
e142c38c | 10901 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 10902 | if (attr) |
f1e6e072 | 10903 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 10904 | |
e142c38c | 10905 | cu->list_in_scope = &local_symbols; |
c906108c | 10906 | |
639d11d3 | 10907 | if (die->child != NULL) |
c906108c | 10908 | { |
639d11d3 | 10909 | child_die = die->child; |
c906108c SS |
10910 | while (child_die && child_die->tag) |
10911 | { | |
34eaf542 TT |
10912 | if (child_die->tag == DW_TAG_template_type_param |
10913 | || child_die->tag == DW_TAG_template_value_param) | |
10914 | { | |
10915 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
10916 | ||
f1078f66 DJ |
10917 | if (arg != NULL) |
10918 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
10919 | } |
10920 | else | |
10921 | process_die (child_die, cu); | |
c906108c SS |
10922 | child_die = sibling_die (child_die); |
10923 | } | |
10924 | } | |
10925 | ||
d389af10 JK |
10926 | inherit_abstract_dies (die, cu); |
10927 | ||
4a811a97 UW |
10928 | /* If we have a DW_AT_specification, we might need to import using |
10929 | directives from the context of the specification DIE. See the | |
10930 | comment in determine_prefix. */ | |
10931 | if (cu->language == language_cplus | |
10932 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
10933 | { | |
10934 | struct dwarf2_cu *spec_cu = cu; | |
10935 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
10936 | ||
10937 | while (spec_die) | |
10938 | { | |
10939 | child_die = spec_die->child; | |
10940 | while (child_die && child_die->tag) | |
10941 | { | |
10942 | if (child_die->tag == DW_TAG_imported_module) | |
10943 | process_die (child_die, spec_cu); | |
10944 | child_die = sibling_die (child_die); | |
10945 | } | |
10946 | ||
10947 | /* In some cases, GCC generates specification DIEs that | |
10948 | themselves contain DW_AT_specification attributes. */ | |
10949 | spec_die = die_specification (spec_die, &spec_cu); | |
10950 | } | |
10951 | } | |
10952 | ||
c906108c SS |
10953 | new = pop_context (); |
10954 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
10955 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
10956 | lowpc, highpc, objfile); | |
10957 | ||
df8a16a1 | 10958 | /* For C++, set the block's scope. */ |
195a3f6c | 10959 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 10960 | && cu->processing_has_namespace_info) |
195a3f6c TT |
10961 | block_set_scope (block, determine_prefix (die, cu), |
10962 | &objfile->objfile_obstack); | |
df8a16a1 | 10963 | |
801e3a5b JB |
10964 | /* If we have address ranges, record them. */ |
10965 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 10966 | |
34eaf542 TT |
10967 | /* Attach template arguments to function. */ |
10968 | if (! VEC_empty (symbolp, template_args)) | |
10969 | { | |
10970 | gdb_assert (templ_func != NULL); | |
10971 | ||
10972 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
10973 | templ_func->template_arguments | |
10974 | = obstack_alloc (&objfile->objfile_obstack, | |
10975 | (templ_func->n_template_arguments | |
10976 | * sizeof (struct symbol *))); | |
10977 | memcpy (templ_func->template_arguments, | |
10978 | VEC_address (symbolp, template_args), | |
10979 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
10980 | VEC_free (symbolp, template_args); | |
10981 | } | |
10982 | ||
208d8187 JB |
10983 | /* In C++, we can have functions nested inside functions (e.g., when |
10984 | a function declares a class that has methods). This means that | |
10985 | when we finish processing a function scope, we may need to go | |
10986 | back to building a containing block's symbol lists. */ | |
10987 | local_symbols = new->locals; | |
27aa8d6a | 10988 | using_directives = new->using_directives; |
208d8187 | 10989 | |
921e78cf JB |
10990 | /* If we've finished processing a top-level function, subsequent |
10991 | symbols go in the file symbol list. */ | |
10992 | if (outermost_context_p ()) | |
e142c38c | 10993 | cu->list_in_scope = &file_symbols; |
c906108c SS |
10994 | } |
10995 | ||
10996 | /* Process all the DIES contained within a lexical block scope. Start | |
10997 | a new scope, process the dies, and then close the scope. */ | |
10998 | ||
10999 | static void | |
e7c27a73 | 11000 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11001 | { |
e7c27a73 | 11002 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 11003 | struct context_stack *new; |
c906108c SS |
11004 | CORE_ADDR lowpc, highpc; |
11005 | struct die_info *child_die; | |
e142c38c DJ |
11006 | CORE_ADDR baseaddr; |
11007 | ||
11008 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11009 | |
11010 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11011 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11012 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11013 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11014 | describe ranges. */ |
d85a05f0 | 11015 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
11016 | return; |
11017 | lowpc += baseaddr; | |
11018 | highpc += baseaddr; | |
11019 | ||
11020 | push_context (0, lowpc); | |
639d11d3 | 11021 | if (die->child != NULL) |
c906108c | 11022 | { |
639d11d3 | 11023 | child_die = die->child; |
c906108c SS |
11024 | while (child_die && child_die->tag) |
11025 | { | |
e7c27a73 | 11026 | process_die (child_die, cu); |
c906108c SS |
11027 | child_die = sibling_die (child_die); |
11028 | } | |
11029 | } | |
11030 | new = pop_context (); | |
11031 | ||
8540c487 | 11032 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11033 | { |
801e3a5b JB |
11034 | struct block *block |
11035 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
11036 | highpc, objfile); | |
11037 | ||
11038 | /* Note that recording ranges after traversing children, as we | |
11039 | do here, means that recording a parent's ranges entails | |
11040 | walking across all its children's ranges as they appear in | |
11041 | the address map, which is quadratic behavior. | |
11042 | ||
11043 | It would be nicer to record the parent's ranges before | |
11044 | traversing its children, simply overriding whatever you find | |
11045 | there. But since we don't even decide whether to create a | |
11046 | block until after we've traversed its children, that's hard | |
11047 | to do. */ | |
11048 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
11049 | } |
11050 | local_symbols = new->locals; | |
27aa8d6a | 11051 | using_directives = new->using_directives; |
c906108c SS |
11052 | } |
11053 | ||
96408a79 SA |
11054 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11055 | ||
11056 | static void | |
11057 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11058 | { | |
11059 | struct objfile *objfile = cu->objfile; | |
11060 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11061 | CORE_ADDR pc, baseaddr; | |
11062 | struct attribute *attr; | |
11063 | struct call_site *call_site, call_site_local; | |
11064 | void **slot; | |
11065 | int nparams; | |
11066 | struct die_info *child_die; | |
11067 | ||
11068 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11069 | ||
11070 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11071 | if (!attr) | |
11072 | { | |
11073 | complaint (&symfile_complaints, | |
11074 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11075 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11076 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11077 | return; |
11078 | } | |
11079 | pc = DW_ADDR (attr) + baseaddr; | |
11080 | ||
11081 | if (cu->call_site_htab == NULL) | |
11082 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11083 | NULL, &objfile->objfile_obstack, | |
11084 | hashtab_obstack_allocate, NULL); | |
11085 | call_site_local.pc = pc; | |
11086 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11087 | if (*slot != NULL) | |
11088 | { | |
11089 | complaint (&symfile_complaints, | |
11090 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11091 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11092 | paddress (gdbarch, pc), die->offset.sect_off, |
11093 | objfile_name (objfile)); | |
96408a79 SA |
11094 | return; |
11095 | } | |
11096 | ||
11097 | /* Count parameters at the caller. */ | |
11098 | ||
11099 | nparams = 0; | |
11100 | for (child_die = die->child; child_die && child_die->tag; | |
11101 | child_die = sibling_die (child_die)) | |
11102 | { | |
11103 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11104 | { | |
11105 | complaint (&symfile_complaints, | |
11106 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11107 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11108 | child_die->tag, child_die->offset.sect_off, |
11109 | objfile_name (objfile)); | |
96408a79 SA |
11110 | continue; |
11111 | } | |
11112 | ||
11113 | nparams++; | |
11114 | } | |
11115 | ||
11116 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11117 | (sizeof (*call_site) | |
11118 | + (sizeof (*call_site->parameter) | |
11119 | * (nparams - 1)))); | |
11120 | *slot = call_site; | |
11121 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11122 | call_site->pc = pc; | |
11123 | ||
11124 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11125 | { | |
11126 | struct die_info *func_die; | |
11127 | ||
11128 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11129 | for (func_die = die->parent; | |
11130 | func_die && func_die->tag != DW_TAG_subprogram | |
11131 | && func_die->tag != DW_TAG_subroutine_type; | |
11132 | func_die = func_die->parent); | |
11133 | ||
11134 | /* DW_AT_GNU_all_call_sites is a superset | |
11135 | of DW_AT_GNU_all_tail_call_sites. */ | |
11136 | if (func_die | |
11137 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11138 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11139 | { | |
11140 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11141 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11142 | both the initial caller containing the real return address PC and | |
11143 | the final callee containing the current PC of a chain of tail | |
11144 | calls do not need to have the tail call list complete. But any | |
11145 | function candidate for a virtual tail call frame searched via | |
11146 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11147 | determined unambiguously. */ | |
11148 | } | |
11149 | else | |
11150 | { | |
11151 | struct type *func_type = NULL; | |
11152 | ||
11153 | if (func_die) | |
11154 | func_type = get_die_type (func_die, cu); | |
11155 | if (func_type != NULL) | |
11156 | { | |
11157 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11158 | ||
11159 | /* Enlist this call site to the function. */ | |
11160 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11161 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11162 | } | |
11163 | else | |
11164 | complaint (&symfile_complaints, | |
11165 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11166 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11167 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11168 | } |
11169 | } | |
11170 | ||
11171 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11172 | if (attr == NULL) | |
11173 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11174 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11175 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11176 | /* Keep NULL DWARF_BLOCK. */; | |
11177 | else if (attr_form_is_block (attr)) | |
11178 | { | |
11179 | struct dwarf2_locexpr_baton *dlbaton; | |
11180 | ||
11181 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11182 | dlbaton->data = DW_BLOCK (attr)->data; | |
11183 | dlbaton->size = DW_BLOCK (attr)->size; | |
11184 | dlbaton->per_cu = cu->per_cu; | |
11185 | ||
11186 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11187 | } | |
7771576e | 11188 | else if (attr_form_is_ref (attr)) |
96408a79 | 11189 | { |
96408a79 SA |
11190 | struct dwarf2_cu *target_cu = cu; |
11191 | struct die_info *target_die; | |
11192 | ||
ac9ec31b | 11193 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11194 | gdb_assert (target_cu->objfile == objfile); |
11195 | if (die_is_declaration (target_die, target_cu)) | |
11196 | { | |
9112db09 JK |
11197 | const char *target_physname = NULL; |
11198 | struct attribute *target_attr; | |
11199 | ||
11200 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11201 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11202 | if (target_attr == NULL) | |
11203 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11204 | target_cu); | |
11205 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11206 | target_physname = DW_STRING (target_attr); | |
11207 | else | |
11208 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11209 | if (target_physname == NULL) |
11210 | complaint (&symfile_complaints, | |
11211 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11212 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11213 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11214 | else |
7d455152 | 11215 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11216 | } |
11217 | else | |
11218 | { | |
11219 | CORE_ADDR lowpc; | |
11220 | ||
11221 | /* DW_AT_entry_pc should be preferred. */ | |
11222 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11223 | complaint (&symfile_complaints, | |
11224 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11225 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11226 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11227 | else |
11228 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
11229 | } | |
11230 | } | |
11231 | else | |
11232 | complaint (&symfile_complaints, | |
11233 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11234 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11235 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11236 | |
11237 | call_site->per_cu = cu->per_cu; | |
11238 | ||
11239 | for (child_die = die->child; | |
11240 | child_die && child_die->tag; | |
11241 | child_die = sibling_die (child_die)) | |
11242 | { | |
96408a79 | 11243 | struct call_site_parameter *parameter; |
1788b2d3 | 11244 | struct attribute *loc, *origin; |
96408a79 SA |
11245 | |
11246 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11247 | { | |
11248 | /* Already printed the complaint above. */ | |
11249 | continue; | |
11250 | } | |
11251 | ||
11252 | gdb_assert (call_site->parameter_count < nparams); | |
11253 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11254 | ||
1788b2d3 JK |
11255 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11256 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11257 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11258 | |
24c5c679 | 11259 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11260 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11261 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11262 | { |
11263 | sect_offset offset; | |
11264 | ||
11265 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11266 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11267 | if (!offset_in_cu_p (&cu->header, offset)) |
11268 | { | |
11269 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11270 | binding can be done only inside one CU. Such referenced DIE | |
11271 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11272 | complaint (&symfile_complaints, | |
11273 | _("DW_AT_abstract_origin offset is not in CU for " | |
11274 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11275 | "[in module %s]"), | |
4262abfb | 11276 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11277 | continue; |
11278 | } | |
1788b2d3 JK |
11279 | parameter->u.param_offset.cu_off = (offset.sect_off |
11280 | - cu->header.offset.sect_off); | |
11281 | } | |
11282 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11283 | { |
11284 | complaint (&symfile_complaints, | |
11285 | _("No DW_FORM_block* DW_AT_location for " | |
11286 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11287 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11288 | continue; |
11289 | } | |
24c5c679 | 11290 | else |
96408a79 | 11291 | { |
24c5c679 JK |
11292 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11293 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11294 | if (parameter->u.dwarf_reg != -1) | |
11295 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11296 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11297 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11298 | ¶meter->u.fb_offset)) | |
11299 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11300 | else | |
11301 | { | |
11302 | complaint (&symfile_complaints, | |
11303 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11304 | "for DW_FORM_block* DW_AT_location is supported for " | |
11305 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11306 | "[in module %s]"), | |
4262abfb | 11307 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11308 | continue; |
11309 | } | |
96408a79 SA |
11310 | } |
11311 | ||
11312 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11313 | if (!attr_form_is_block (attr)) | |
11314 | { | |
11315 | complaint (&symfile_complaints, | |
11316 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11317 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11318 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11319 | continue; |
11320 | } | |
11321 | parameter->value = DW_BLOCK (attr)->data; | |
11322 | parameter->value_size = DW_BLOCK (attr)->size; | |
11323 | ||
11324 | /* Parameters are not pre-cleared by memset above. */ | |
11325 | parameter->data_value = NULL; | |
11326 | parameter->data_value_size = 0; | |
11327 | call_site->parameter_count++; | |
11328 | ||
11329 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11330 | if (attr) | |
11331 | { | |
11332 | if (!attr_form_is_block (attr)) | |
11333 | complaint (&symfile_complaints, | |
11334 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11335 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11336 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11337 | else |
11338 | { | |
11339 | parameter->data_value = DW_BLOCK (attr)->data; | |
11340 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11341 | } | |
11342 | } | |
11343 | } | |
11344 | } | |
11345 | ||
43039443 | 11346 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11347 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11348 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11349 | |
11350 | static int | |
11351 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11352 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11353 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11354 | { |
11355 | struct objfile *objfile = cu->objfile; | |
11356 | struct comp_unit_head *cu_header = &cu->header; | |
11357 | bfd *obfd = objfile->obfd; | |
11358 | unsigned int addr_size = cu_header->addr_size; | |
11359 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11360 | /* Base address selection entry. */ | |
11361 | CORE_ADDR base; | |
11362 | int found_base; | |
11363 | unsigned int dummy; | |
d521ce57 | 11364 | const gdb_byte *buffer; |
43039443 JK |
11365 | CORE_ADDR marker; |
11366 | int low_set; | |
11367 | CORE_ADDR low = 0; | |
11368 | CORE_ADDR high = 0; | |
ff013f42 | 11369 | CORE_ADDR baseaddr; |
43039443 | 11370 | |
d00adf39 DE |
11371 | found_base = cu->base_known; |
11372 | base = cu->base_address; | |
43039443 | 11373 | |
be391dca | 11374 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11375 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11376 | { |
11377 | complaint (&symfile_complaints, | |
11378 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11379 | offset); | |
11380 | return 0; | |
11381 | } | |
dce234bc | 11382 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11383 | |
11384 | /* Read in the largest possible address. */ | |
11385 | marker = read_address (obfd, buffer, cu, &dummy); | |
11386 | if ((marker & mask) == mask) | |
11387 | { | |
11388 | /* If we found the largest possible address, then | |
11389 | read the base address. */ | |
11390 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11391 | buffer += 2 * addr_size; | |
11392 | offset += 2 * addr_size; | |
11393 | found_base = 1; | |
11394 | } | |
11395 | ||
11396 | low_set = 0; | |
11397 | ||
e7030f15 | 11398 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11399 | |
43039443 JK |
11400 | while (1) |
11401 | { | |
11402 | CORE_ADDR range_beginning, range_end; | |
11403 | ||
11404 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11405 | buffer += addr_size; | |
11406 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11407 | buffer += addr_size; | |
11408 | offset += 2 * addr_size; | |
11409 | ||
11410 | /* An end of list marker is a pair of zero addresses. */ | |
11411 | if (range_beginning == 0 && range_end == 0) | |
11412 | /* Found the end of list entry. */ | |
11413 | break; | |
11414 | ||
11415 | /* Each base address selection entry is a pair of 2 values. | |
11416 | The first is the largest possible address, the second is | |
11417 | the base address. Check for a base address here. */ | |
11418 | if ((range_beginning & mask) == mask) | |
11419 | { | |
11420 | /* If we found the largest possible address, then | |
11421 | read the base address. */ | |
11422 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11423 | found_base = 1; | |
11424 | continue; | |
11425 | } | |
11426 | ||
11427 | if (!found_base) | |
11428 | { | |
11429 | /* We have no valid base address for the ranges | |
11430 | data. */ | |
11431 | complaint (&symfile_complaints, | |
11432 | _("Invalid .debug_ranges data (no base address)")); | |
11433 | return 0; | |
11434 | } | |
11435 | ||
9277c30c UW |
11436 | if (range_beginning > range_end) |
11437 | { | |
11438 | /* Inverted range entries are invalid. */ | |
11439 | complaint (&symfile_complaints, | |
11440 | _("Invalid .debug_ranges data (inverted range)")); | |
11441 | return 0; | |
11442 | } | |
11443 | ||
11444 | /* Empty range entries have no effect. */ | |
11445 | if (range_beginning == range_end) | |
11446 | continue; | |
11447 | ||
43039443 JK |
11448 | range_beginning += base; |
11449 | range_end += base; | |
11450 | ||
01093045 DE |
11451 | /* A not-uncommon case of bad debug info. |
11452 | Don't pollute the addrmap with bad data. */ | |
11453 | if (range_beginning + baseaddr == 0 | |
11454 | && !dwarf2_per_objfile->has_section_at_zero) | |
11455 | { | |
11456 | complaint (&symfile_complaints, | |
11457 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11458 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11459 | continue; |
11460 | } | |
11461 | ||
9277c30c | 11462 | if (ranges_pst != NULL) |
ff013f42 | 11463 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
11464 | range_beginning + baseaddr, |
11465 | range_end - 1 + baseaddr, | |
ff013f42 JK |
11466 | ranges_pst); |
11467 | ||
43039443 JK |
11468 | /* FIXME: This is recording everything as a low-high |
11469 | segment of consecutive addresses. We should have a | |
11470 | data structure for discontiguous block ranges | |
11471 | instead. */ | |
11472 | if (! low_set) | |
11473 | { | |
11474 | low = range_beginning; | |
11475 | high = range_end; | |
11476 | low_set = 1; | |
11477 | } | |
11478 | else | |
11479 | { | |
11480 | if (range_beginning < low) | |
11481 | low = range_beginning; | |
11482 | if (range_end > high) | |
11483 | high = range_end; | |
11484 | } | |
11485 | } | |
11486 | ||
11487 | if (! low_set) | |
11488 | /* If the first entry is an end-of-list marker, the range | |
11489 | describes an empty scope, i.e. no instructions. */ | |
11490 | return 0; | |
11491 | ||
11492 | if (low_return) | |
11493 | *low_return = low; | |
11494 | if (high_return) | |
11495 | *high_return = high; | |
11496 | return 1; | |
11497 | } | |
11498 | ||
af34e669 DJ |
11499 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
11500 | are present and valid, otherwise, return 0. Return -1 if the range is | |
11501 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 11502 | |
c906108c | 11503 | static int |
af34e669 | 11504 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
11505 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
11506 | struct partial_symtab *pst) | |
c906108c SS |
11507 | { |
11508 | struct attribute *attr; | |
91da1414 | 11509 | struct attribute *attr_high; |
af34e669 DJ |
11510 | CORE_ADDR low = 0; |
11511 | CORE_ADDR high = 0; | |
11512 | int ret = 0; | |
c906108c | 11513 | |
91da1414 MW |
11514 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11515 | if (attr_high) | |
af34e669 | 11516 | { |
e142c38c | 11517 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 11518 | if (attr) |
91da1414 MW |
11519 | { |
11520 | low = DW_ADDR (attr); | |
3019eac3 DE |
11521 | if (attr_high->form == DW_FORM_addr |
11522 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11523 | high = DW_ADDR (attr_high); |
11524 | else | |
11525 | high = low + DW_UNSND (attr_high); | |
11526 | } | |
af34e669 DJ |
11527 | else |
11528 | /* Found high w/o low attribute. */ | |
11529 | return 0; | |
11530 | ||
11531 | /* Found consecutive range of addresses. */ | |
11532 | ret = 1; | |
11533 | } | |
c906108c | 11534 | else |
af34e669 | 11535 | { |
e142c38c | 11536 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
11537 | if (attr != NULL) |
11538 | { | |
ab435259 DE |
11539 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11540 | We take advantage of the fact that DW_AT_ranges does not appear | |
11541 | in DW_TAG_compile_unit of DWO files. */ | |
11542 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
11543 | unsigned int ranges_offset = (DW_UNSND (attr) | |
11544 | + (need_ranges_base | |
11545 | ? cu->ranges_base | |
11546 | : 0)); | |
2e3cf129 | 11547 | |
af34e669 | 11548 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 11549 | .debug_ranges section. */ |
2e3cf129 | 11550 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 11551 | return 0; |
43039443 | 11552 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
11553 | ret = -1; |
11554 | } | |
11555 | } | |
c906108c | 11556 | |
9373cf26 JK |
11557 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
11558 | if (high <= low) | |
c906108c SS |
11559 | return 0; |
11560 | ||
11561 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11562 | eliminate duplicate copies of functions and vtables and such. | |
11563 | The linker will arbitrarily choose one and discard the others. | |
11564 | The AT_*_pc values for such functions refer to local labels in | |
11565 | these sections. If the section from that file was discarded, the | |
11566 | labels are not in the output, so the relocs get a value of 0. | |
11567 | If this is a discarded function, mark the pc bounds as invalid, | |
11568 | so that GDB will ignore it. */ | |
72dca2f5 | 11569 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
11570 | return 0; |
11571 | ||
11572 | *lowpc = low; | |
96408a79 SA |
11573 | if (highpc) |
11574 | *highpc = high; | |
af34e669 | 11575 | return ret; |
c906108c SS |
11576 | } |
11577 | ||
b084d499 JB |
11578 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
11579 | its low and high PC addresses. Do nothing if these addresses could not | |
11580 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
11581 | and HIGHPC to the high address if greater than HIGHPC. */ | |
11582 | ||
11583 | static void | |
11584 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
11585 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11586 | struct dwarf2_cu *cu) | |
11587 | { | |
11588 | CORE_ADDR low, high; | |
11589 | struct die_info *child = die->child; | |
11590 | ||
d85a05f0 | 11591 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
11592 | { |
11593 | *lowpc = min (*lowpc, low); | |
11594 | *highpc = max (*highpc, high); | |
11595 | } | |
11596 | ||
11597 | /* If the language does not allow nested subprograms (either inside | |
11598 | subprograms or lexical blocks), we're done. */ | |
11599 | if (cu->language != language_ada) | |
11600 | return; | |
6e70227d | 11601 | |
b084d499 JB |
11602 | /* Check all the children of the given DIE. If it contains nested |
11603 | subprograms, then check their pc bounds. Likewise, we need to | |
11604 | check lexical blocks as well, as they may also contain subprogram | |
11605 | definitions. */ | |
11606 | while (child && child->tag) | |
11607 | { | |
11608 | if (child->tag == DW_TAG_subprogram | |
11609 | || child->tag == DW_TAG_lexical_block) | |
11610 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
11611 | child = sibling_die (child); | |
11612 | } | |
11613 | } | |
11614 | ||
fae299cd DC |
11615 | /* Get the low and high pc's represented by the scope DIE, and store |
11616 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
11617 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
11618 | ||
11619 | static void | |
11620 | get_scope_pc_bounds (struct die_info *die, | |
11621 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11622 | struct dwarf2_cu *cu) | |
11623 | { | |
11624 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
11625 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
11626 | CORE_ADDR current_low, current_high; | |
11627 | ||
d85a05f0 | 11628 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
11629 | { |
11630 | best_low = current_low; | |
11631 | best_high = current_high; | |
11632 | } | |
11633 | else | |
11634 | { | |
11635 | struct die_info *child = die->child; | |
11636 | ||
11637 | while (child && child->tag) | |
11638 | { | |
11639 | switch (child->tag) { | |
11640 | case DW_TAG_subprogram: | |
b084d499 | 11641 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
11642 | break; |
11643 | case DW_TAG_namespace: | |
f55ee35c | 11644 | case DW_TAG_module: |
fae299cd DC |
11645 | /* FIXME: carlton/2004-01-16: Should we do this for |
11646 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
11647 | that current GCC's always emit the DIEs corresponding | |
11648 | to definitions of methods of classes as children of a | |
11649 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
11650 | the DIEs giving the declarations, which could be | |
11651 | anywhere). But I don't see any reason why the | |
11652 | standards says that they have to be there. */ | |
11653 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
11654 | ||
11655 | if (current_low != ((CORE_ADDR) -1)) | |
11656 | { | |
11657 | best_low = min (best_low, current_low); | |
11658 | best_high = max (best_high, current_high); | |
11659 | } | |
11660 | break; | |
11661 | default: | |
0963b4bd | 11662 | /* Ignore. */ |
fae299cd DC |
11663 | break; |
11664 | } | |
11665 | ||
11666 | child = sibling_die (child); | |
11667 | } | |
11668 | } | |
11669 | ||
11670 | *lowpc = best_low; | |
11671 | *highpc = best_high; | |
11672 | } | |
11673 | ||
801e3a5b JB |
11674 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
11675 | in DIE. */ | |
380bca97 | 11676 | |
801e3a5b JB |
11677 | static void |
11678 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
11679 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
11680 | { | |
bb5ed363 | 11681 | struct objfile *objfile = cu->objfile; |
801e3a5b | 11682 | struct attribute *attr; |
91da1414 | 11683 | struct attribute *attr_high; |
801e3a5b | 11684 | |
91da1414 MW |
11685 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11686 | if (attr_high) | |
801e3a5b | 11687 | { |
801e3a5b JB |
11688 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
11689 | if (attr) | |
11690 | { | |
11691 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 11692 | CORE_ADDR high; |
3019eac3 DE |
11693 | if (attr_high->form == DW_FORM_addr |
11694 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11695 | high = DW_ADDR (attr_high); |
11696 | else | |
11697 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 11698 | |
801e3a5b JB |
11699 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
11700 | } | |
11701 | } | |
11702 | ||
11703 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
11704 | if (attr) | |
11705 | { | |
bb5ed363 | 11706 | bfd *obfd = objfile->obfd; |
ab435259 DE |
11707 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11708 | We take advantage of the fact that DW_AT_ranges does not appear | |
11709 | in DW_TAG_compile_unit of DWO files. */ | |
11710 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
11711 | |
11712 | /* The value of the DW_AT_ranges attribute is the offset of the | |
11713 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
11714 | unsigned long offset = (DW_UNSND (attr) |
11715 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 11716 | const gdb_byte *buffer; |
801e3a5b JB |
11717 | |
11718 | /* For some target architectures, but not others, the | |
11719 | read_address function sign-extends the addresses it returns. | |
11720 | To recognize base address selection entries, we need a | |
11721 | mask. */ | |
11722 | unsigned int addr_size = cu->header.addr_size; | |
11723 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11724 | ||
11725 | /* The base address, to which the next pair is relative. Note | |
11726 | that this 'base' is a DWARF concept: most entries in a range | |
11727 | list are relative, to reduce the number of relocs against the | |
11728 | debugging information. This is separate from this function's | |
11729 | 'baseaddr' argument, which GDB uses to relocate debugging | |
11730 | information from a shared library based on the address at | |
11731 | which the library was loaded. */ | |
d00adf39 DE |
11732 | CORE_ADDR base = cu->base_address; |
11733 | int base_known = cu->base_known; | |
801e3a5b | 11734 | |
d62bfeaf | 11735 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11736 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
11737 | { |
11738 | complaint (&symfile_complaints, | |
11739 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
11740 | offset); | |
11741 | return; | |
11742 | } | |
d62bfeaf | 11743 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
11744 | |
11745 | for (;;) | |
11746 | { | |
11747 | unsigned int bytes_read; | |
11748 | CORE_ADDR start, end; | |
11749 | ||
11750 | start = read_address (obfd, buffer, cu, &bytes_read); | |
11751 | buffer += bytes_read; | |
11752 | end = read_address (obfd, buffer, cu, &bytes_read); | |
11753 | buffer += bytes_read; | |
11754 | ||
11755 | /* Did we find the end of the range list? */ | |
11756 | if (start == 0 && end == 0) | |
11757 | break; | |
11758 | ||
11759 | /* Did we find a base address selection entry? */ | |
11760 | else if ((start & base_select_mask) == base_select_mask) | |
11761 | { | |
11762 | base = end; | |
11763 | base_known = 1; | |
11764 | } | |
11765 | ||
11766 | /* We found an ordinary address range. */ | |
11767 | else | |
11768 | { | |
11769 | if (!base_known) | |
11770 | { | |
11771 | complaint (&symfile_complaints, | |
3e43a32a MS |
11772 | _("Invalid .debug_ranges data " |
11773 | "(no base address)")); | |
801e3a5b JB |
11774 | return; |
11775 | } | |
11776 | ||
9277c30c UW |
11777 | if (start > end) |
11778 | { | |
11779 | /* Inverted range entries are invalid. */ | |
11780 | complaint (&symfile_complaints, | |
11781 | _("Invalid .debug_ranges data " | |
11782 | "(inverted range)")); | |
11783 | return; | |
11784 | } | |
11785 | ||
11786 | /* Empty range entries have no effect. */ | |
11787 | if (start == end) | |
11788 | continue; | |
11789 | ||
01093045 DE |
11790 | start += base + baseaddr; |
11791 | end += base + baseaddr; | |
11792 | ||
11793 | /* A not-uncommon case of bad debug info. | |
11794 | Don't pollute the addrmap with bad data. */ | |
11795 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11796 | { | |
11797 | complaint (&symfile_complaints, | |
11798 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11799 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11800 | continue; |
11801 | } | |
11802 | ||
11803 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
11804 | } |
11805 | } | |
11806 | } | |
11807 | } | |
11808 | ||
685b1105 JK |
11809 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
11810 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 11811 | |
685b1105 JK |
11812 | static void |
11813 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
11814 | { |
11815 | const char *cs; | |
11816 | int major, minor, release; | |
11817 | ||
11818 | if (cu->producer == NULL) | |
11819 | { | |
11820 | /* For unknown compilers expect their behavior is DWARF version | |
11821 | compliant. | |
11822 | ||
11823 | GCC started to support .debug_types sections by -gdwarf-4 since | |
11824 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
11825 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
11826 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
11827 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 11828 | } |
685b1105 | 11829 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 11830 | { |
685b1105 JK |
11831 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
11832 | ||
ba919b58 TT |
11833 | cs = &cu->producer[strlen ("GNU ")]; |
11834 | while (*cs && !isdigit (*cs)) | |
11835 | cs++; | |
11836 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
11837 | { | |
11838 | /* Not recognized as GCC. */ | |
11839 | } | |
11840 | else | |
1b80a9fa JK |
11841 | { |
11842 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
11843 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
11844 | } | |
685b1105 JK |
11845 | } |
11846 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
11847 | cu->producer_is_icc = 1; | |
11848 | else | |
11849 | { | |
11850 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
11851 | compliant. */ | |
60d5a603 JK |
11852 | } |
11853 | ||
ba919b58 | 11854 | cu->checked_producer = 1; |
685b1105 | 11855 | } |
ba919b58 | 11856 | |
685b1105 JK |
11857 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
11858 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
11859 | during 4.6.0 experimental. */ | |
11860 | ||
11861 | static int | |
11862 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
11863 | { | |
11864 | if (!cu->checked_producer) | |
11865 | check_producer (cu); | |
11866 | ||
11867 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
11868 | } |
11869 | ||
11870 | /* Return the default accessibility type if it is not overriden by | |
11871 | DW_AT_accessibility. */ | |
11872 | ||
11873 | static enum dwarf_access_attribute | |
11874 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
11875 | { | |
11876 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
11877 | { | |
11878 | /* The default DWARF 2 accessibility for members is public, the default | |
11879 | accessibility for inheritance is private. */ | |
11880 | ||
11881 | if (die->tag != DW_TAG_inheritance) | |
11882 | return DW_ACCESS_public; | |
11883 | else | |
11884 | return DW_ACCESS_private; | |
11885 | } | |
11886 | else | |
11887 | { | |
11888 | /* DWARF 3+ defines the default accessibility a different way. The same | |
11889 | rules apply now for DW_TAG_inheritance as for the members and it only | |
11890 | depends on the container kind. */ | |
11891 | ||
11892 | if (die->parent->tag == DW_TAG_class_type) | |
11893 | return DW_ACCESS_private; | |
11894 | else | |
11895 | return DW_ACCESS_public; | |
11896 | } | |
11897 | } | |
11898 | ||
74ac6d43 TT |
11899 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
11900 | offset. If the attribute was not found return 0, otherwise return | |
11901 | 1. If it was found but could not properly be handled, set *OFFSET | |
11902 | to 0. */ | |
11903 | ||
11904 | static int | |
11905 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
11906 | LONGEST *offset) | |
11907 | { | |
11908 | struct attribute *attr; | |
11909 | ||
11910 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
11911 | if (attr != NULL) | |
11912 | { | |
11913 | *offset = 0; | |
11914 | ||
11915 | /* Note that we do not check for a section offset first here. | |
11916 | This is because DW_AT_data_member_location is new in DWARF 4, | |
11917 | so if we see it, we can assume that a constant form is really | |
11918 | a constant and not a section offset. */ | |
11919 | if (attr_form_is_constant (attr)) | |
11920 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
11921 | else if (attr_form_is_section_offset (attr)) | |
11922 | dwarf2_complex_location_expr_complaint (); | |
11923 | else if (attr_form_is_block (attr)) | |
11924 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
11925 | else | |
11926 | dwarf2_complex_location_expr_complaint (); | |
11927 | ||
11928 | return 1; | |
11929 | } | |
11930 | ||
11931 | return 0; | |
11932 | } | |
11933 | ||
c906108c SS |
11934 | /* Add an aggregate field to the field list. */ |
11935 | ||
11936 | static void | |
107d2387 | 11937 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 11938 | struct dwarf2_cu *cu) |
6e70227d | 11939 | { |
e7c27a73 | 11940 | struct objfile *objfile = cu->objfile; |
5e2b427d | 11941 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
11942 | struct nextfield *new_field; |
11943 | struct attribute *attr; | |
11944 | struct field *fp; | |
15d034d0 | 11945 | const char *fieldname = ""; |
c906108c SS |
11946 | |
11947 | /* Allocate a new field list entry and link it in. */ | |
11948 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 11949 | make_cleanup (xfree, new_field); |
c906108c | 11950 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
11951 | |
11952 | if (die->tag == DW_TAG_inheritance) | |
11953 | { | |
11954 | new_field->next = fip->baseclasses; | |
11955 | fip->baseclasses = new_field; | |
11956 | } | |
11957 | else | |
11958 | { | |
11959 | new_field->next = fip->fields; | |
11960 | fip->fields = new_field; | |
11961 | } | |
c906108c SS |
11962 | fip->nfields++; |
11963 | ||
e142c38c | 11964 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
11965 | if (attr) |
11966 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
11967 | else |
11968 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
11969 | if (new_field->accessibility != DW_ACCESS_public) |
11970 | fip->non_public_fields = 1; | |
60d5a603 | 11971 | |
e142c38c | 11972 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
11973 | if (attr) |
11974 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
11975 | else |
11976 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
11977 | |
11978 | fp = &new_field->field; | |
a9a9bd0f | 11979 | |
e142c38c | 11980 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 11981 | { |
74ac6d43 TT |
11982 | LONGEST offset; |
11983 | ||
a9a9bd0f | 11984 | /* Data member other than a C++ static data member. */ |
6e70227d | 11985 | |
c906108c | 11986 | /* Get type of field. */ |
e7c27a73 | 11987 | fp->type = die_type (die, cu); |
c906108c | 11988 | |
d6a843b5 | 11989 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 11990 | |
c906108c | 11991 | /* Get bit size of field (zero if none). */ |
e142c38c | 11992 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
11993 | if (attr) |
11994 | { | |
11995 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
11996 | } | |
11997 | else | |
11998 | { | |
11999 | FIELD_BITSIZE (*fp) = 0; | |
12000 | } | |
12001 | ||
12002 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12003 | if (handle_data_member_location (die, cu, &offset)) |
12004 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12005 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12006 | if (attr) |
12007 | { | |
5e2b427d | 12008 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12009 | { |
12010 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12011 | additional bit offset from the MSB of the containing |
12012 | anonymous object to the MSB of the field. We don't | |
12013 | have to do anything special since we don't need to | |
12014 | know the size of the anonymous object. */ | |
f41f5e61 | 12015 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12016 | } |
12017 | else | |
12018 | { | |
12019 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12020 | MSB of the anonymous object, subtract off the number of |
12021 | bits from the MSB of the field to the MSB of the | |
12022 | object, and then subtract off the number of bits of | |
12023 | the field itself. The result is the bit offset of | |
12024 | the LSB of the field. */ | |
c906108c SS |
12025 | int anonymous_size; |
12026 | int bit_offset = DW_UNSND (attr); | |
12027 | ||
e142c38c | 12028 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12029 | if (attr) |
12030 | { | |
12031 | /* The size of the anonymous object containing | |
12032 | the bit field is explicit, so use the | |
12033 | indicated size (in bytes). */ | |
12034 | anonymous_size = DW_UNSND (attr); | |
12035 | } | |
12036 | else | |
12037 | { | |
12038 | /* The size of the anonymous object containing | |
12039 | the bit field must be inferred from the type | |
12040 | attribute of the data member containing the | |
12041 | bit field. */ | |
12042 | anonymous_size = TYPE_LENGTH (fp->type); | |
12043 | } | |
f41f5e61 PA |
12044 | SET_FIELD_BITPOS (*fp, |
12045 | (FIELD_BITPOS (*fp) | |
12046 | + anonymous_size * bits_per_byte | |
12047 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12048 | } |
12049 | } | |
12050 | ||
12051 | /* Get name of field. */ | |
39cbfefa DJ |
12052 | fieldname = dwarf2_name (die, cu); |
12053 | if (fieldname == NULL) | |
12054 | fieldname = ""; | |
d8151005 DJ |
12055 | |
12056 | /* The name is already allocated along with this objfile, so we don't | |
12057 | need to duplicate it for the type. */ | |
12058 | fp->name = fieldname; | |
c906108c SS |
12059 | |
12060 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12061 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12062 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12063 | { |
d48cc9dd | 12064 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12065 | new_field->accessibility = DW_ACCESS_private; |
12066 | fip->non_public_fields = 1; | |
12067 | } | |
12068 | } | |
a9a9bd0f | 12069 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12070 | { |
a9a9bd0f DC |
12071 | /* C++ static member. */ |
12072 | ||
12073 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12074 | is a declaration, but all versions of G++ as of this writing | |
12075 | (so through at least 3.2.1) incorrectly generate | |
12076 | DW_TAG_variable tags. */ | |
6e70227d | 12077 | |
ff355380 | 12078 | const char *physname; |
c906108c | 12079 | |
a9a9bd0f | 12080 | /* Get name of field. */ |
39cbfefa DJ |
12081 | fieldname = dwarf2_name (die, cu); |
12082 | if (fieldname == NULL) | |
c906108c SS |
12083 | return; |
12084 | ||
254e6b9e | 12085 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12086 | if (attr |
12087 | /* Only create a symbol if this is an external value. | |
12088 | new_symbol checks this and puts the value in the global symbol | |
12089 | table, which we want. If it is not external, new_symbol | |
12090 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12091 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12092 | { |
12093 | /* A static const member, not much different than an enum as far as | |
12094 | we're concerned, except that we can support more types. */ | |
12095 | new_symbol (die, NULL, cu); | |
12096 | } | |
12097 | ||
2df3850c | 12098 | /* Get physical name. */ |
ff355380 | 12099 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12100 | |
d8151005 DJ |
12101 | /* The name is already allocated along with this objfile, so we don't |
12102 | need to duplicate it for the type. */ | |
12103 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12104 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12105 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12106 | } |
12107 | else if (die->tag == DW_TAG_inheritance) | |
12108 | { | |
74ac6d43 | 12109 | LONGEST offset; |
d4b96c9a | 12110 | |
74ac6d43 TT |
12111 | /* C++ base class field. */ |
12112 | if (handle_data_member_location (die, cu, &offset)) | |
12113 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12114 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12115 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12116 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12117 | fip->nbaseclasses++; | |
12118 | } | |
12119 | } | |
12120 | ||
98751a41 JK |
12121 | /* Add a typedef defined in the scope of the FIP's class. */ |
12122 | ||
12123 | static void | |
12124 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12125 | struct dwarf2_cu *cu) | |
6e70227d | 12126 | { |
98751a41 | 12127 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12128 | struct typedef_field_list *new_field; |
12129 | struct attribute *attr; | |
12130 | struct typedef_field *fp; | |
12131 | char *fieldname = ""; | |
12132 | ||
12133 | /* Allocate a new field list entry and link it in. */ | |
12134 | new_field = xzalloc (sizeof (*new_field)); | |
12135 | make_cleanup (xfree, new_field); | |
12136 | ||
12137 | gdb_assert (die->tag == DW_TAG_typedef); | |
12138 | ||
12139 | fp = &new_field->field; | |
12140 | ||
12141 | /* Get name of field. */ | |
12142 | fp->name = dwarf2_name (die, cu); | |
12143 | if (fp->name == NULL) | |
12144 | return; | |
12145 | ||
12146 | fp->type = read_type_die (die, cu); | |
12147 | ||
12148 | new_field->next = fip->typedef_field_list; | |
12149 | fip->typedef_field_list = new_field; | |
12150 | fip->typedef_field_list_count++; | |
12151 | } | |
12152 | ||
c906108c SS |
12153 | /* Create the vector of fields, and attach it to the type. */ |
12154 | ||
12155 | static void | |
fba45db2 | 12156 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12157 | struct dwarf2_cu *cu) |
c906108c SS |
12158 | { |
12159 | int nfields = fip->nfields; | |
12160 | ||
12161 | /* Record the field count, allocate space for the array of fields, | |
12162 | and create blank accessibility bitfields if necessary. */ | |
12163 | TYPE_NFIELDS (type) = nfields; | |
12164 | TYPE_FIELDS (type) = (struct field *) | |
12165 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12166 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12167 | ||
b4ba55a1 | 12168 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12169 | { |
12170 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12171 | ||
12172 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12173 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12174 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12175 | ||
12176 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12177 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12178 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12179 | ||
774b6a14 TT |
12180 | TYPE_FIELD_IGNORE_BITS (type) = |
12181 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12182 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12183 | } |
12184 | ||
12185 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12186 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12187 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12188 | { |
12189 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12190 | unsigned char *pointer; |
c906108c SS |
12191 | |
12192 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12193 | pointer = TYPE_ALLOC (type, num_bytes); |
12194 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12195 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12196 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12197 | } | |
12198 | ||
3e43a32a MS |
12199 | /* Copy the saved-up fields into the field vector. Start from the head of |
12200 | the list, adding to the tail of the field array, so that they end up in | |
12201 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12202 | while (nfields-- > 0) |
12203 | { | |
7d0ccb61 DJ |
12204 | struct nextfield *fieldp; |
12205 | ||
12206 | if (fip->fields) | |
12207 | { | |
12208 | fieldp = fip->fields; | |
12209 | fip->fields = fieldp->next; | |
12210 | } | |
12211 | else | |
12212 | { | |
12213 | fieldp = fip->baseclasses; | |
12214 | fip->baseclasses = fieldp->next; | |
12215 | } | |
12216 | ||
12217 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12218 | switch (fieldp->accessibility) | |
c906108c | 12219 | { |
c5aa993b | 12220 | case DW_ACCESS_private: |
b4ba55a1 JB |
12221 | if (cu->language != language_ada) |
12222 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12223 | break; |
c906108c | 12224 | |
c5aa993b | 12225 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12226 | if (cu->language != language_ada) |
12227 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12228 | break; |
c906108c | 12229 | |
c5aa993b JM |
12230 | case DW_ACCESS_public: |
12231 | break; | |
c906108c | 12232 | |
c5aa993b JM |
12233 | default: |
12234 | /* Unknown accessibility. Complain and treat it as public. */ | |
12235 | { | |
e2e0b3e5 | 12236 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12237 | fieldp->accessibility); |
c5aa993b JM |
12238 | } |
12239 | break; | |
c906108c SS |
12240 | } |
12241 | if (nfields < fip->nbaseclasses) | |
12242 | { | |
7d0ccb61 | 12243 | switch (fieldp->virtuality) |
c906108c | 12244 | { |
c5aa993b JM |
12245 | case DW_VIRTUALITY_virtual: |
12246 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12247 | if (cu->language == language_ada) |
a73c6dcd | 12248 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12249 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12250 | break; | |
c906108c SS |
12251 | } |
12252 | } | |
c906108c SS |
12253 | } |
12254 | } | |
12255 | ||
7d27a96d TT |
12256 | /* Return true if this member function is a constructor, false |
12257 | otherwise. */ | |
12258 | ||
12259 | static int | |
12260 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12261 | { | |
12262 | const char *fieldname; | |
12263 | const char *typename; | |
12264 | int len; | |
12265 | ||
12266 | if (die->parent == NULL) | |
12267 | return 0; | |
12268 | ||
12269 | if (die->parent->tag != DW_TAG_structure_type | |
12270 | && die->parent->tag != DW_TAG_union_type | |
12271 | && die->parent->tag != DW_TAG_class_type) | |
12272 | return 0; | |
12273 | ||
12274 | fieldname = dwarf2_name (die, cu); | |
12275 | typename = dwarf2_name (die->parent, cu); | |
12276 | if (fieldname == NULL || typename == NULL) | |
12277 | return 0; | |
12278 | ||
12279 | len = strlen (fieldname); | |
12280 | return (strncmp (fieldname, typename, len) == 0 | |
12281 | && (typename[len] == '\0' || typename[len] == '<')); | |
12282 | } | |
12283 | ||
c906108c SS |
12284 | /* Add a member function to the proper fieldlist. */ |
12285 | ||
12286 | static void | |
107d2387 | 12287 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12288 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12289 | { |
e7c27a73 | 12290 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12291 | struct attribute *attr; |
12292 | struct fnfieldlist *flp; | |
12293 | int i; | |
12294 | struct fn_field *fnp; | |
15d034d0 | 12295 | const char *fieldname; |
c906108c | 12296 | struct nextfnfield *new_fnfield; |
f792889a | 12297 | struct type *this_type; |
60d5a603 | 12298 | enum dwarf_access_attribute accessibility; |
c906108c | 12299 | |
b4ba55a1 | 12300 | if (cu->language == language_ada) |
a73c6dcd | 12301 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12302 | |
2df3850c | 12303 | /* Get name of member function. */ |
39cbfefa DJ |
12304 | fieldname = dwarf2_name (die, cu); |
12305 | if (fieldname == NULL) | |
2df3850c | 12306 | return; |
c906108c | 12307 | |
c906108c SS |
12308 | /* Look up member function name in fieldlist. */ |
12309 | for (i = 0; i < fip->nfnfields; i++) | |
12310 | { | |
27bfe10e | 12311 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12312 | break; |
12313 | } | |
12314 | ||
12315 | /* Create new list element if necessary. */ | |
12316 | if (i < fip->nfnfields) | |
12317 | flp = &fip->fnfieldlists[i]; | |
12318 | else | |
12319 | { | |
12320 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12321 | { | |
12322 | fip->fnfieldlists = (struct fnfieldlist *) | |
12323 | xrealloc (fip->fnfieldlists, | |
12324 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12325 | * sizeof (struct fnfieldlist)); |
c906108c | 12326 | if (fip->nfnfields == 0) |
c13c43fd | 12327 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12328 | } |
12329 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12330 | flp->name = fieldname; | |
12331 | flp->length = 0; | |
12332 | flp->head = NULL; | |
3da10d80 | 12333 | i = fip->nfnfields++; |
c906108c SS |
12334 | } |
12335 | ||
12336 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12337 | entry. */ |
c906108c | 12338 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12339 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12340 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12341 | new_fnfield->next = flp->head; | |
12342 | flp->head = new_fnfield; | |
12343 | flp->length++; | |
12344 | ||
12345 | /* Fill in the member function field info. */ | |
12346 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12347 | |
12348 | /* Delay processing of the physname until later. */ | |
12349 | if (cu->language == language_cplus || cu->language == language_java) | |
12350 | { | |
12351 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12352 | die, cu); | |
12353 | } | |
12354 | else | |
12355 | { | |
1d06ead6 | 12356 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12357 | fnp->physname = physname ? physname : ""; |
12358 | } | |
12359 | ||
c906108c | 12360 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12361 | this_type = read_type_die (die, cu); |
12362 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12363 | { |
f792889a | 12364 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12365 | |
f792889a | 12366 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12367 | of the method itself (TYPE_CODE_METHOD). */ |
12368 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12369 | TYPE_TARGET_TYPE (this_type), |
12370 | TYPE_FIELDS (this_type), | |
12371 | TYPE_NFIELDS (this_type), | |
12372 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12373 | |
12374 | /* Handle static member functions. | |
c5aa993b | 12375 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12376 | member functions. G++ helps GDB by marking the first |
12377 | parameter for non-static member functions (which is the this | |
12378 | pointer) as artificial. We obtain this information from | |
12379 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12380 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12381 | fnp->voffset = VOFFSET_STATIC; |
12382 | } | |
12383 | else | |
e2e0b3e5 | 12384 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12385 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12386 | |
12387 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12388 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12389 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12390 | |
3e43a32a MS |
12391 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12392 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12393 | |
12394 | /* Get accessibility. */ | |
e142c38c | 12395 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12396 | if (attr) |
60d5a603 JK |
12397 | accessibility = DW_UNSND (attr); |
12398 | else | |
12399 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12400 | switch (accessibility) | |
c906108c | 12401 | { |
60d5a603 JK |
12402 | case DW_ACCESS_private: |
12403 | fnp->is_private = 1; | |
12404 | break; | |
12405 | case DW_ACCESS_protected: | |
12406 | fnp->is_protected = 1; | |
12407 | break; | |
c906108c SS |
12408 | } |
12409 | ||
b02dede2 | 12410 | /* Check for artificial methods. */ |
e142c38c | 12411 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12412 | if (attr && DW_UNSND (attr) != 0) |
12413 | fnp->is_artificial = 1; | |
12414 | ||
7d27a96d TT |
12415 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12416 | ||
0d564a31 | 12417 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12418 | function. For older versions of GCC, this is an offset in the |
12419 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12420 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12421 | to the object address. */ |
12422 | ||
e142c38c | 12423 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12424 | if (attr) |
8e19ed76 | 12425 | { |
aec5aa8b | 12426 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12427 | { |
aec5aa8b TT |
12428 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12429 | { | |
12430 | /* Old-style GCC. */ | |
12431 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12432 | } | |
12433 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12434 | || (DW_BLOCK (attr)->size > 1 | |
12435 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12436 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12437 | { | |
12438 | struct dwarf_block blk; | |
12439 | int offset; | |
12440 | ||
12441 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12442 | ? 1 : 2); | |
12443 | blk.size = DW_BLOCK (attr)->size - offset; | |
12444 | blk.data = DW_BLOCK (attr)->data + offset; | |
12445 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12446 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12447 | dwarf2_complex_location_expr_complaint (); | |
12448 | else | |
12449 | fnp->voffset /= cu->header.addr_size; | |
12450 | fnp->voffset += 2; | |
12451 | } | |
12452 | else | |
12453 | dwarf2_complex_location_expr_complaint (); | |
12454 | ||
12455 | if (!fnp->fcontext) | |
12456 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12457 | } | |
3690dd37 | 12458 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12459 | { |
4d3c2250 | 12460 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12461 | } |
12462 | else | |
12463 | { | |
4d3c2250 KB |
12464 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12465 | fieldname); | |
8e19ed76 | 12466 | } |
0d564a31 | 12467 | } |
d48cc9dd DJ |
12468 | else |
12469 | { | |
12470 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12471 | if (attr && DW_UNSND (attr)) | |
12472 | { | |
12473 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12474 | complaint (&symfile_complaints, | |
3e43a32a MS |
12475 | _("Member function \"%s\" (offset %d) is virtual " |
12476 | "but the vtable offset is not specified"), | |
b64f50a1 | 12477 | fieldname, die->offset.sect_off); |
9655fd1a | 12478 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12479 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12480 | } | |
12481 | } | |
c906108c SS |
12482 | } |
12483 | ||
12484 | /* Create the vector of member function fields, and attach it to the type. */ | |
12485 | ||
12486 | static void | |
fba45db2 | 12487 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12488 | struct dwarf2_cu *cu) |
c906108c SS |
12489 | { |
12490 | struct fnfieldlist *flp; | |
c906108c SS |
12491 | int i; |
12492 | ||
b4ba55a1 | 12493 | if (cu->language == language_ada) |
a73c6dcd | 12494 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 12495 | |
c906108c SS |
12496 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
12497 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
12498 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
12499 | ||
12500 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
12501 | { | |
12502 | struct nextfnfield *nfp = flp->head; | |
12503 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
12504 | int k; | |
12505 | ||
12506 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
12507 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
12508 | fn_flp->fn_fields = (struct fn_field *) | |
12509 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
12510 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 12511 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
12512 | } |
12513 | ||
12514 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
12515 | } |
12516 | ||
1168df01 JB |
12517 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
12518 | language, zero otherwise. */ | |
12519 | static int | |
12520 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
12521 | { | |
12522 | static const char vptr[] = "_vptr"; | |
987504bb | 12523 | static const char vtable[] = "vtable"; |
1168df01 | 12524 | |
987504bb JJ |
12525 | /* Look for the C++ and Java forms of the vtable. */ |
12526 | if ((cu->language == language_java | |
12527 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
12528 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
12529 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
12530 | return 1; |
12531 | ||
12532 | return 0; | |
12533 | } | |
12534 | ||
c0dd20ea | 12535 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
12536 | functions, with the ABI-specified layout. If TYPE describes |
12537 | such a structure, smash it into a member function type. | |
61049d3b DJ |
12538 | |
12539 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
12540 | This is GCC PR debug/28767. */ | |
c0dd20ea | 12541 | |
0b92b5bb TT |
12542 | static void |
12543 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 12544 | { |
0b92b5bb | 12545 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
12546 | |
12547 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
12548 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
12549 | return; | |
c0dd20ea DJ |
12550 | |
12551 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
12552 | if (TYPE_FIELD_NAME (type, 0) == NULL |
12553 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
12554 | || TYPE_FIELD_NAME (type, 1) == NULL | |
12555 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
12556 | return; | |
c0dd20ea DJ |
12557 | |
12558 | /* Find the type of the method. */ | |
0b92b5bb | 12559 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
12560 | if (pfn_type == NULL |
12561 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
12562 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 12563 | return; |
c0dd20ea DJ |
12564 | |
12565 | /* Look for the "this" argument. */ | |
12566 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
12567 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 12568 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 12569 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 12570 | return; |
c0dd20ea DJ |
12571 | |
12572 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
12573 | new_type = alloc_type (objfile); |
12574 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
12575 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
12576 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 12577 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 12578 | } |
1168df01 | 12579 | |
685b1105 JK |
12580 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
12581 | (icc). */ | |
12582 | ||
12583 | static int | |
12584 | producer_is_icc (struct dwarf2_cu *cu) | |
12585 | { | |
12586 | if (!cu->checked_producer) | |
12587 | check_producer (cu); | |
12588 | ||
12589 | return cu->producer_is_icc; | |
12590 | } | |
12591 | ||
c906108c | 12592 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
12593 | (definition) to create a type for the structure or union. Fill in |
12594 | the type's name and general properties; the members will not be | |
3d1d5ea3 | 12595 | processed until process_structure_scope. |
c906108c | 12596 | |
c767944b DJ |
12597 | NOTE: we need to call these functions regardless of whether or not the |
12598 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
12599 | structure or union. This gets the type entered into our set of |
12600 | user defined types. | |
12601 | ||
12602 | However, if the structure is incomplete (an opaque struct/union) | |
12603 | then suppress creating a symbol table entry for it since gdb only | |
12604 | wants to find the one with the complete definition. Note that if | |
12605 | it is complete, we just call new_symbol, which does it's own | |
12606 | checking about whether the struct/union is anonymous or not (and | |
12607 | suppresses creating a symbol table entry itself). */ | |
12608 | ||
f792889a | 12609 | static struct type * |
134d01f1 | 12610 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12611 | { |
e7c27a73 | 12612 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12613 | struct type *type; |
12614 | struct attribute *attr; | |
15d034d0 | 12615 | const char *name; |
c906108c | 12616 | |
348e048f DE |
12617 | /* If the definition of this type lives in .debug_types, read that type. |
12618 | Don't follow DW_AT_specification though, that will take us back up | |
12619 | the chain and we want to go down. */ | |
45e58e77 | 12620 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12621 | if (attr) |
12622 | { | |
ac9ec31b | 12623 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12624 | |
ac9ec31b | 12625 | /* The type's CU may not be the same as CU. |
02142a6c | 12626 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12627 | return set_die_type (die, type, cu); |
12628 | } | |
12629 | ||
c0dd20ea | 12630 | type = alloc_type (objfile); |
c906108c | 12631 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 12632 | |
39cbfefa DJ |
12633 | name = dwarf2_name (die, cu); |
12634 | if (name != NULL) | |
c906108c | 12635 | { |
987504bb JJ |
12636 | if (cu->language == language_cplus |
12637 | || cu->language == language_java) | |
63d06c5c | 12638 | { |
15d034d0 | 12639 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
12640 | |
12641 | /* dwarf2_full_name might have already finished building the DIE's | |
12642 | type. If so, there is no need to continue. */ | |
12643 | if (get_die_type (die, cu) != NULL) | |
12644 | return get_die_type (die, cu); | |
12645 | ||
12646 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
12647 | if (die->tag == DW_TAG_structure_type |
12648 | || die->tag == DW_TAG_class_type) | |
12649 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
12650 | } |
12651 | else | |
12652 | { | |
d8151005 DJ |
12653 | /* The name is already allocated along with this objfile, so |
12654 | we don't need to duplicate it for the type. */ | |
7d455152 | 12655 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
12656 | if (die->tag == DW_TAG_class_type) |
12657 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 12658 | } |
c906108c SS |
12659 | } |
12660 | ||
12661 | if (die->tag == DW_TAG_structure_type) | |
12662 | { | |
12663 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
12664 | } | |
12665 | else if (die->tag == DW_TAG_union_type) | |
12666 | { | |
12667 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
12668 | } | |
12669 | else | |
12670 | { | |
c906108c SS |
12671 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
12672 | } | |
12673 | ||
0cc2414c TT |
12674 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
12675 | TYPE_DECLARED_CLASS (type) = 1; | |
12676 | ||
e142c38c | 12677 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12678 | if (attr) |
12679 | { | |
12680 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12681 | } | |
12682 | else | |
12683 | { | |
12684 | TYPE_LENGTH (type) = 0; | |
12685 | } | |
12686 | ||
685b1105 JK |
12687 | if (producer_is_icc (cu)) |
12688 | { | |
12689 | /* ICC does not output the required DW_AT_declaration | |
12690 | on incomplete types, but gives them a size of zero. */ | |
12691 | } | |
12692 | else | |
12693 | TYPE_STUB_SUPPORTED (type) = 1; | |
12694 | ||
dc718098 | 12695 | if (die_is_declaration (die, cu)) |
876cecd0 | 12696 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
12697 | else if (attr == NULL && die->child == NULL |
12698 | && producer_is_realview (cu->producer)) | |
12699 | /* RealView does not output the required DW_AT_declaration | |
12700 | on incomplete types. */ | |
12701 | TYPE_STUB (type) = 1; | |
dc718098 | 12702 | |
c906108c SS |
12703 | /* We need to add the type field to the die immediately so we don't |
12704 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 12705 | type within the structure itself. */ |
1c379e20 | 12706 | set_die_type (die, type, cu); |
c906108c | 12707 | |
7e314c57 JK |
12708 | /* set_die_type should be already done. */ |
12709 | set_descriptive_type (type, die, cu); | |
12710 | ||
c767944b DJ |
12711 | return type; |
12712 | } | |
12713 | ||
12714 | /* Finish creating a structure or union type, including filling in | |
12715 | its members and creating a symbol for it. */ | |
12716 | ||
12717 | static void | |
12718 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12719 | { | |
12720 | struct objfile *objfile = cu->objfile; | |
12721 | struct die_info *child_die = die->child; | |
12722 | struct type *type; | |
12723 | ||
12724 | type = get_die_type (die, cu); | |
12725 | if (type == NULL) | |
12726 | type = read_structure_type (die, cu); | |
12727 | ||
e142c38c | 12728 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
12729 | { |
12730 | struct field_info fi; | |
12731 | struct die_info *child_die; | |
34eaf542 | 12732 | VEC (symbolp) *template_args = NULL; |
c767944b | 12733 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
12734 | |
12735 | memset (&fi, 0, sizeof (struct field_info)); | |
12736 | ||
639d11d3 | 12737 | child_die = die->child; |
c906108c SS |
12738 | |
12739 | while (child_die && child_die->tag) | |
12740 | { | |
a9a9bd0f DC |
12741 | if (child_die->tag == DW_TAG_member |
12742 | || child_die->tag == DW_TAG_variable) | |
c906108c | 12743 | { |
a9a9bd0f DC |
12744 | /* NOTE: carlton/2002-11-05: A C++ static data member |
12745 | should be a DW_TAG_member that is a declaration, but | |
12746 | all versions of G++ as of this writing (so through at | |
12747 | least 3.2.1) incorrectly generate DW_TAG_variable | |
12748 | tags for them instead. */ | |
e7c27a73 | 12749 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12750 | } |
8713b1b1 | 12751 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 12752 | { |
0963b4bd | 12753 | /* C++ member function. */ |
e7c27a73 | 12754 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
12755 | } |
12756 | else if (child_die->tag == DW_TAG_inheritance) | |
12757 | { | |
12758 | /* C++ base class field. */ | |
e7c27a73 | 12759 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12760 | } |
98751a41 JK |
12761 | else if (child_die->tag == DW_TAG_typedef) |
12762 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
12763 | else if (child_die->tag == DW_TAG_template_type_param |
12764 | || child_die->tag == DW_TAG_template_value_param) | |
12765 | { | |
12766 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12767 | ||
f1078f66 DJ |
12768 | if (arg != NULL) |
12769 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
12770 | } |
12771 | ||
c906108c SS |
12772 | child_die = sibling_die (child_die); |
12773 | } | |
12774 | ||
34eaf542 TT |
12775 | /* Attach template arguments to type. */ |
12776 | if (! VEC_empty (symbolp, template_args)) | |
12777 | { | |
12778 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12779 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12780 | = VEC_length (symbolp, template_args); | |
12781 | TYPE_TEMPLATE_ARGUMENTS (type) | |
12782 | = obstack_alloc (&objfile->objfile_obstack, | |
12783 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12784 | * sizeof (struct symbol *))); | |
12785 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
12786 | VEC_address (symbolp, template_args), | |
12787 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12788 | * sizeof (struct symbol *))); | |
12789 | VEC_free (symbolp, template_args); | |
12790 | } | |
12791 | ||
c906108c SS |
12792 | /* Attach fields and member functions to the type. */ |
12793 | if (fi.nfields) | |
e7c27a73 | 12794 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
12795 | if (fi.nfnfields) |
12796 | { | |
e7c27a73 | 12797 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 12798 | |
c5aa993b | 12799 | /* Get the type which refers to the base class (possibly this |
c906108c | 12800 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
12801 | class from the DW_AT_containing_type attribute. This use of |
12802 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 12803 | |
e142c38c | 12804 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 12805 | { |
e7c27a73 | 12806 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
12807 | |
12808 | TYPE_VPTR_BASETYPE (type) = t; | |
12809 | if (type == t) | |
12810 | { | |
c906108c SS |
12811 | int i; |
12812 | ||
12813 | /* Our own class provides vtbl ptr. */ | |
12814 | for (i = TYPE_NFIELDS (t) - 1; | |
12815 | i >= TYPE_N_BASECLASSES (t); | |
12816 | --i) | |
12817 | { | |
0d5cff50 | 12818 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 12819 | |
1168df01 | 12820 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
12821 | { |
12822 | TYPE_VPTR_FIELDNO (type) = i; | |
12823 | break; | |
12824 | } | |
12825 | } | |
12826 | ||
12827 | /* Complain if virtual function table field not found. */ | |
12828 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 12829 | complaint (&symfile_complaints, |
3e43a32a MS |
12830 | _("virtual function table pointer " |
12831 | "not found when defining class '%s'"), | |
4d3c2250 KB |
12832 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
12833 | ""); | |
c906108c SS |
12834 | } |
12835 | else | |
12836 | { | |
12837 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
12838 | } | |
12839 | } | |
f6235d4c EZ |
12840 | else if (cu->producer |
12841 | && strncmp (cu->producer, | |
12842 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
12843 | { | |
12844 | /* The IBM XLC compiler does not provide direct indication | |
12845 | of the containing type, but the vtable pointer is | |
12846 | always named __vfp. */ | |
12847 | ||
12848 | int i; | |
12849 | ||
12850 | for (i = TYPE_NFIELDS (type) - 1; | |
12851 | i >= TYPE_N_BASECLASSES (type); | |
12852 | --i) | |
12853 | { | |
12854 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
12855 | { | |
12856 | TYPE_VPTR_FIELDNO (type) = i; | |
12857 | TYPE_VPTR_BASETYPE (type) = type; | |
12858 | break; | |
12859 | } | |
12860 | } | |
12861 | } | |
c906108c | 12862 | } |
98751a41 JK |
12863 | |
12864 | /* Copy fi.typedef_field_list linked list elements content into the | |
12865 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
12866 | if (fi.typedef_field_list) | |
12867 | { | |
12868 | int i = fi.typedef_field_list_count; | |
12869 | ||
a0d7a4ff | 12870 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
12871 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
12872 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
12873 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
12874 | ||
12875 | /* Reverse the list order to keep the debug info elements order. */ | |
12876 | while (--i >= 0) | |
12877 | { | |
12878 | struct typedef_field *dest, *src; | |
6e70227d | 12879 | |
98751a41 JK |
12880 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
12881 | src = &fi.typedef_field_list->field; | |
12882 | fi.typedef_field_list = fi.typedef_field_list->next; | |
12883 | *dest = *src; | |
12884 | } | |
12885 | } | |
c767944b DJ |
12886 | |
12887 | do_cleanups (back_to); | |
eb2a6f42 TT |
12888 | |
12889 | if (HAVE_CPLUS_STRUCT (type)) | |
12890 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 12891 | } |
63d06c5c | 12892 | |
bb5ed363 | 12893 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 12894 | |
90aeadfc DC |
12895 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
12896 | snapshots) has been known to create a die giving a declaration | |
12897 | for a class that has, as a child, a die giving a definition for a | |
12898 | nested class. So we have to process our children even if the | |
12899 | current die is a declaration. Normally, of course, a declaration | |
12900 | won't have any children at all. */ | |
134d01f1 | 12901 | |
90aeadfc DC |
12902 | while (child_die != NULL && child_die->tag) |
12903 | { | |
12904 | if (child_die->tag == DW_TAG_member | |
12905 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
12906 | || child_die->tag == DW_TAG_inheritance |
12907 | || child_die->tag == DW_TAG_template_value_param | |
12908 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 12909 | { |
90aeadfc | 12910 | /* Do nothing. */ |
134d01f1 | 12911 | } |
90aeadfc DC |
12912 | else |
12913 | process_die (child_die, cu); | |
134d01f1 | 12914 | |
90aeadfc | 12915 | child_die = sibling_die (child_die); |
134d01f1 DJ |
12916 | } |
12917 | ||
fa4028e9 JB |
12918 | /* Do not consider external references. According to the DWARF standard, |
12919 | these DIEs are identified by the fact that they have no byte_size | |
12920 | attribute, and a declaration attribute. */ | |
12921 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
12922 | || !die_is_declaration (die, cu)) | |
c767944b | 12923 | new_symbol (die, type, cu); |
134d01f1 DJ |
12924 | } |
12925 | ||
12926 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
12927 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 12928 | |
f792889a | 12929 | static struct type * |
134d01f1 | 12930 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12931 | { |
e7c27a73 | 12932 | struct objfile *objfile = cu->objfile; |
c906108c | 12933 | struct type *type; |
c906108c | 12934 | struct attribute *attr; |
0114d602 | 12935 | const char *name; |
134d01f1 | 12936 | |
348e048f DE |
12937 | /* If the definition of this type lives in .debug_types, read that type. |
12938 | Don't follow DW_AT_specification though, that will take us back up | |
12939 | the chain and we want to go down. */ | |
45e58e77 | 12940 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12941 | if (attr) |
12942 | { | |
ac9ec31b | 12943 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12944 | |
ac9ec31b | 12945 | /* The type's CU may not be the same as CU. |
02142a6c | 12946 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12947 | return set_die_type (die, type, cu); |
12948 | } | |
12949 | ||
c906108c SS |
12950 | type = alloc_type (objfile); |
12951 | ||
12952 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 12953 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 12954 | if (name != NULL) |
7d455152 | 12955 | TYPE_TAG_NAME (type) = name; |
c906108c | 12956 | |
e142c38c | 12957 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12958 | if (attr) |
12959 | { | |
12960 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12961 | } | |
12962 | else | |
12963 | { | |
12964 | TYPE_LENGTH (type) = 0; | |
12965 | } | |
12966 | ||
137033e9 JB |
12967 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
12968 | declared as private in the package spec, and then defined only | |
12969 | inside the package body. Such types are known as Taft Amendment | |
12970 | Types. When another package uses such a type, an incomplete DIE | |
12971 | may be generated by the compiler. */ | |
02eb380e | 12972 | if (die_is_declaration (die, cu)) |
876cecd0 | 12973 | TYPE_STUB (type) = 1; |
02eb380e | 12974 | |
f792889a | 12975 | return set_die_type (die, type, cu); |
134d01f1 DJ |
12976 | } |
12977 | ||
12978 | /* Given a pointer to a die which begins an enumeration, process all | |
12979 | the dies that define the members of the enumeration, and create the | |
12980 | symbol for the enumeration type. | |
12981 | ||
12982 | NOTE: We reverse the order of the element list. */ | |
12983 | ||
12984 | static void | |
12985 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12986 | { | |
f792889a | 12987 | struct type *this_type; |
134d01f1 | 12988 | |
f792889a DJ |
12989 | this_type = get_die_type (die, cu); |
12990 | if (this_type == NULL) | |
12991 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 12992 | |
639d11d3 | 12993 | if (die->child != NULL) |
c906108c | 12994 | { |
9dc481d3 DE |
12995 | struct die_info *child_die; |
12996 | struct symbol *sym; | |
12997 | struct field *fields = NULL; | |
12998 | int num_fields = 0; | |
12999 | int unsigned_enum = 1; | |
15d034d0 | 13000 | const char *name; |
cafec441 TT |
13001 | int flag_enum = 1; |
13002 | ULONGEST mask = 0; | |
9dc481d3 | 13003 | |
639d11d3 | 13004 | child_die = die->child; |
c906108c SS |
13005 | while (child_die && child_die->tag) |
13006 | { | |
13007 | if (child_die->tag != DW_TAG_enumerator) | |
13008 | { | |
e7c27a73 | 13009 | process_die (child_die, cu); |
c906108c SS |
13010 | } |
13011 | else | |
13012 | { | |
39cbfefa DJ |
13013 | name = dwarf2_name (child_die, cu); |
13014 | if (name) | |
c906108c | 13015 | { |
f792889a | 13016 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 13017 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
13018 | { |
13019 | unsigned_enum = 0; | |
13020 | flag_enum = 0; | |
13021 | } | |
13022 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
13023 | flag_enum = 0; | |
13024 | else | |
13025 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
13026 | |
13027 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13028 | { | |
13029 | fields = (struct field *) | |
13030 | xrealloc (fields, | |
13031 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13032 | * sizeof (struct field)); |
c906108c SS |
13033 | } |
13034 | ||
3567439c | 13035 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13036 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13037 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13038 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13039 | ||
13040 | num_fields++; | |
13041 | } | |
13042 | } | |
13043 | ||
13044 | child_die = sibling_die (child_die); | |
13045 | } | |
13046 | ||
13047 | if (num_fields) | |
13048 | { | |
f792889a DJ |
13049 | TYPE_NFIELDS (this_type) = num_fields; |
13050 | TYPE_FIELDS (this_type) = (struct field *) | |
13051 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13052 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13053 | sizeof (struct field) * num_fields); |
b8c9b27d | 13054 | xfree (fields); |
c906108c SS |
13055 | } |
13056 | if (unsigned_enum) | |
876cecd0 | 13057 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
13058 | if (flag_enum) |
13059 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 13060 | } |
134d01f1 | 13061 | |
6c83ed52 TT |
13062 | /* If we are reading an enum from a .debug_types unit, and the enum |
13063 | is a declaration, and the enum is not the signatured type in the | |
13064 | unit, then we do not want to add a symbol for it. Adding a | |
13065 | symbol would in some cases obscure the true definition of the | |
13066 | enum, giving users an incomplete type when the definition is | |
13067 | actually available. Note that we do not want to do this for all | |
13068 | enums which are just declarations, because C++0x allows forward | |
13069 | enum declarations. */ | |
3019eac3 | 13070 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13071 | && die_is_declaration (die, cu)) |
13072 | { | |
52dc124a | 13073 | struct signatured_type *sig_type; |
6c83ed52 | 13074 | |
c0f78cd4 | 13075 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13076 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13077 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13078 | return; |
13079 | } | |
13080 | ||
f792889a | 13081 | new_symbol (die, this_type, cu); |
c906108c SS |
13082 | } |
13083 | ||
13084 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13085 | the DIE's type field. For now, this only handles one dimensional | |
13086 | arrays. */ | |
13087 | ||
f792889a | 13088 | static struct type * |
e7c27a73 | 13089 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13090 | { |
e7c27a73 | 13091 | struct objfile *objfile = cu->objfile; |
c906108c | 13092 | struct die_info *child_die; |
7e314c57 | 13093 | struct type *type; |
c906108c SS |
13094 | struct type *element_type, *range_type, *index_type; |
13095 | struct type **range_types = NULL; | |
13096 | struct attribute *attr; | |
13097 | int ndim = 0; | |
13098 | struct cleanup *back_to; | |
15d034d0 | 13099 | const char *name; |
c906108c | 13100 | |
e7c27a73 | 13101 | element_type = die_type (die, cu); |
c906108c | 13102 | |
7e314c57 JK |
13103 | /* The die_type call above may have already set the type for this DIE. */ |
13104 | type = get_die_type (die, cu); | |
13105 | if (type) | |
13106 | return type; | |
13107 | ||
c906108c SS |
13108 | /* Irix 6.2 native cc creates array types without children for |
13109 | arrays with unspecified length. */ | |
639d11d3 | 13110 | if (die->child == NULL) |
c906108c | 13111 | { |
46bf5051 | 13112 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13113 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
13114 | type = create_array_type (NULL, element_type, range_type); |
13115 | return set_die_type (die, type, cu); | |
c906108c SS |
13116 | } |
13117 | ||
13118 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13119 | child_die = die->child; |
c906108c SS |
13120 | while (child_die && child_die->tag) |
13121 | { | |
13122 | if (child_die->tag == DW_TAG_subrange_type) | |
13123 | { | |
f792889a | 13124 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13125 | |
f792889a | 13126 | if (child_type != NULL) |
a02abb62 | 13127 | { |
0963b4bd MS |
13128 | /* The range type was succesfully read. Save it for the |
13129 | array type creation. */ | |
a02abb62 JB |
13130 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13131 | { | |
13132 | range_types = (struct type **) | |
13133 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13134 | * sizeof (struct type *)); | |
13135 | if (ndim == 0) | |
13136 | make_cleanup (free_current_contents, &range_types); | |
13137 | } | |
f792889a | 13138 | range_types[ndim++] = child_type; |
a02abb62 | 13139 | } |
c906108c SS |
13140 | } |
13141 | child_die = sibling_die (child_die); | |
13142 | } | |
13143 | ||
13144 | /* Dwarf2 dimensions are output from left to right, create the | |
13145 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13146 | |
c906108c | 13147 | type = element_type; |
7ca2d3a3 DL |
13148 | |
13149 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13150 | { | |
13151 | int i = 0; | |
9a619af0 | 13152 | |
7ca2d3a3 DL |
13153 | while (i < ndim) |
13154 | type = create_array_type (NULL, type, range_types[i++]); | |
13155 | } | |
13156 | else | |
13157 | { | |
13158 | while (ndim-- > 0) | |
13159 | type = create_array_type (NULL, type, range_types[ndim]); | |
13160 | } | |
c906108c | 13161 | |
f5f8a009 EZ |
13162 | /* Understand Dwarf2 support for vector types (like they occur on |
13163 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13164 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13165 | custom vendor extension. The main difference between a regular | |
13166 | array and the vector variant is that vectors are passed by value | |
13167 | to functions. */ | |
e142c38c | 13168 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13169 | if (attr) |
ea37ba09 | 13170 | make_vector_type (type); |
f5f8a009 | 13171 | |
dbc98a8b KW |
13172 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13173 | implementation may choose to implement triple vectors using this | |
13174 | attribute. */ | |
13175 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13176 | if (attr) | |
13177 | { | |
13178 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13179 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13180 | else | |
3e43a32a MS |
13181 | complaint (&symfile_complaints, |
13182 | _("DW_AT_byte_size for array type smaller " | |
13183 | "than the total size of elements")); | |
dbc98a8b KW |
13184 | } |
13185 | ||
39cbfefa DJ |
13186 | name = dwarf2_name (die, cu); |
13187 | if (name) | |
13188 | TYPE_NAME (type) = name; | |
6e70227d | 13189 | |
0963b4bd | 13190 | /* Install the type in the die. */ |
7e314c57 JK |
13191 | set_die_type (die, type, cu); |
13192 | ||
13193 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13194 | set_descriptive_type (type, die, cu); |
13195 | ||
c906108c SS |
13196 | do_cleanups (back_to); |
13197 | ||
7e314c57 | 13198 | return type; |
c906108c SS |
13199 | } |
13200 | ||
7ca2d3a3 | 13201 | static enum dwarf_array_dim_ordering |
6e70227d | 13202 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13203 | { |
13204 | struct attribute *attr; | |
13205 | ||
13206 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13207 | ||
13208 | if (attr) return DW_SND (attr); | |
13209 | ||
0963b4bd MS |
13210 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13211 | opposite order to the dwarf2 specification, but data is still | |
13212 | laid out as per normal fortran. | |
7ca2d3a3 | 13213 | |
0963b4bd MS |
13214 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13215 | version checking. */ | |
7ca2d3a3 | 13216 | |
905e0470 PM |
13217 | if (cu->language == language_fortran |
13218 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13219 | { |
13220 | return DW_ORD_row_major; | |
13221 | } | |
13222 | ||
6e70227d | 13223 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13224 | { |
13225 | case array_column_major: | |
13226 | return DW_ORD_col_major; | |
13227 | case array_row_major: | |
13228 | default: | |
13229 | return DW_ORD_row_major; | |
13230 | }; | |
13231 | } | |
13232 | ||
72019c9c | 13233 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13234 | the DIE's type field. */ |
72019c9c | 13235 | |
f792889a | 13236 | static struct type * |
72019c9c GM |
13237 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13238 | { | |
7e314c57 JK |
13239 | struct type *domain_type, *set_type; |
13240 | struct attribute *attr; | |
f792889a | 13241 | |
7e314c57 JK |
13242 | domain_type = die_type (die, cu); |
13243 | ||
13244 | /* The die_type call above may have already set the type for this DIE. */ | |
13245 | set_type = get_die_type (die, cu); | |
13246 | if (set_type) | |
13247 | return set_type; | |
13248 | ||
13249 | set_type = create_set_type (NULL, domain_type); | |
13250 | ||
13251 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13252 | if (attr) |
13253 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13254 | |
f792889a | 13255 | return set_die_type (die, set_type, cu); |
72019c9c | 13256 | } |
7ca2d3a3 | 13257 | |
0971de02 TT |
13258 | /* A helper for read_common_block that creates a locexpr baton. |
13259 | SYM is the symbol which we are marking as computed. | |
13260 | COMMON_DIE is the DIE for the common block. | |
13261 | COMMON_LOC is the location expression attribute for the common | |
13262 | block itself. | |
13263 | MEMBER_LOC is the location expression attribute for the particular | |
13264 | member of the common block that we are processing. | |
13265 | CU is the CU from which the above come. */ | |
13266 | ||
13267 | static void | |
13268 | mark_common_block_symbol_computed (struct symbol *sym, | |
13269 | struct die_info *common_die, | |
13270 | struct attribute *common_loc, | |
13271 | struct attribute *member_loc, | |
13272 | struct dwarf2_cu *cu) | |
13273 | { | |
13274 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13275 | struct dwarf2_locexpr_baton *baton; | |
13276 | gdb_byte *ptr; | |
13277 | unsigned int cu_off; | |
13278 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13279 | LONGEST offset = 0; | |
13280 | ||
13281 | gdb_assert (common_loc && member_loc); | |
13282 | gdb_assert (attr_form_is_block (common_loc)); | |
13283 | gdb_assert (attr_form_is_block (member_loc) | |
13284 | || attr_form_is_constant (member_loc)); | |
13285 | ||
13286 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13287 | sizeof (struct dwarf2_locexpr_baton)); | |
13288 | baton->per_cu = cu->per_cu; | |
13289 | gdb_assert (baton->per_cu); | |
13290 | ||
13291 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13292 | ||
13293 | if (attr_form_is_constant (member_loc)) | |
13294 | { | |
13295 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13296 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13297 | } | |
13298 | else | |
13299 | baton->size += DW_BLOCK (member_loc)->size; | |
13300 | ||
13301 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13302 | baton->data = ptr; | |
13303 | ||
13304 | *ptr++ = DW_OP_call4; | |
13305 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13306 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13307 | ptr += 4; | |
13308 | ||
13309 | if (attr_form_is_constant (member_loc)) | |
13310 | { | |
13311 | *ptr++ = DW_OP_addr; | |
13312 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13313 | ptr += cu->header.addr_size; | |
13314 | } | |
13315 | else | |
13316 | { | |
13317 | /* We have to copy the data here, because DW_OP_call4 will only | |
13318 | use a DW_AT_location attribute. */ | |
13319 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13320 | ptr += DW_BLOCK (member_loc)->size; | |
13321 | } | |
13322 | ||
13323 | *ptr++ = DW_OP_plus; | |
13324 | gdb_assert (ptr - baton->data == baton->size); | |
13325 | ||
0971de02 | 13326 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13327 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13328 | } |
13329 | ||
4357ac6c TT |
13330 | /* Create appropriate locally-scoped variables for all the |
13331 | DW_TAG_common_block entries. Also create a struct common_block | |
13332 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13333 | is used to sepate the common blocks name namespace from regular | |
13334 | variable names. */ | |
c906108c SS |
13335 | |
13336 | static void | |
e7c27a73 | 13337 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13338 | { |
0971de02 TT |
13339 | struct attribute *attr; |
13340 | ||
13341 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13342 | if (attr) | |
13343 | { | |
13344 | /* Support the .debug_loc offsets. */ | |
13345 | if (attr_form_is_block (attr)) | |
13346 | { | |
13347 | /* Ok. */ | |
13348 | } | |
13349 | else if (attr_form_is_section_offset (attr)) | |
13350 | { | |
13351 | dwarf2_complex_location_expr_complaint (); | |
13352 | attr = NULL; | |
13353 | } | |
13354 | else | |
13355 | { | |
13356 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13357 | "common block member"); | |
13358 | attr = NULL; | |
13359 | } | |
13360 | } | |
13361 | ||
639d11d3 | 13362 | if (die->child != NULL) |
c906108c | 13363 | { |
4357ac6c TT |
13364 | struct objfile *objfile = cu->objfile; |
13365 | struct die_info *child_die; | |
13366 | size_t n_entries = 0, size; | |
13367 | struct common_block *common_block; | |
13368 | struct symbol *sym; | |
74ac6d43 | 13369 | |
4357ac6c TT |
13370 | for (child_die = die->child; |
13371 | child_die && child_die->tag; | |
13372 | child_die = sibling_die (child_die)) | |
13373 | ++n_entries; | |
13374 | ||
13375 | size = (sizeof (struct common_block) | |
13376 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13377 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13378 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13379 | common_block->n_entries = 0; | |
13380 | ||
13381 | for (child_die = die->child; | |
13382 | child_die && child_die->tag; | |
13383 | child_die = sibling_die (child_die)) | |
13384 | { | |
13385 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13386 | symbol scope. */ | |
e7c27a73 | 13387 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13388 | if (sym != NULL) |
13389 | { | |
13390 | struct attribute *member_loc; | |
13391 | ||
13392 | common_block->contents[common_block->n_entries++] = sym; | |
13393 | ||
13394 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13395 | cu); | |
13396 | if (member_loc) | |
13397 | { | |
13398 | /* GDB has handled this for a long time, but it is | |
13399 | not specified by DWARF. It seems to have been | |
13400 | emitted by gfortran at least as recently as: | |
13401 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13402 | complaint (&symfile_complaints, | |
13403 | _("Variable in common block has " | |
13404 | "DW_AT_data_member_location " | |
13405 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
13406 | child_die->offset.sect_off, |
13407 | objfile_name (cu->objfile)); | |
0971de02 TT |
13408 | |
13409 | if (attr_form_is_section_offset (member_loc)) | |
13410 | dwarf2_complex_location_expr_complaint (); | |
13411 | else if (attr_form_is_constant (member_loc) | |
13412 | || attr_form_is_block (member_loc)) | |
13413 | { | |
13414 | if (attr) | |
13415 | mark_common_block_symbol_computed (sym, die, attr, | |
13416 | member_loc, cu); | |
13417 | } | |
13418 | else | |
13419 | dwarf2_complex_location_expr_complaint (); | |
13420 | } | |
13421 | } | |
c906108c | 13422 | } |
4357ac6c TT |
13423 | |
13424 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
13425 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
13426 | } |
13427 | } | |
13428 | ||
0114d602 | 13429 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 13430 | |
0114d602 DJ |
13431 | static struct type * |
13432 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 13433 | { |
e7c27a73 | 13434 | struct objfile *objfile = cu->objfile; |
0114d602 | 13435 | const char *previous_prefix, *name; |
9219021c | 13436 | int is_anonymous; |
0114d602 DJ |
13437 | struct type *type; |
13438 | ||
13439 | /* For extensions, reuse the type of the original namespace. */ | |
13440 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
13441 | { | |
13442 | struct die_info *ext_die; | |
13443 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 13444 | |
0114d602 DJ |
13445 | ext_die = dwarf2_extension (die, &ext_cu); |
13446 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
13447 | |
13448 | /* EXT_CU may not be the same as CU. | |
02142a6c | 13449 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
13450 | return set_die_type (die, type, cu); |
13451 | } | |
9219021c | 13452 | |
e142c38c | 13453 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
13454 | |
13455 | /* Now build the name of the current namespace. */ | |
13456 | ||
0114d602 DJ |
13457 | previous_prefix = determine_prefix (die, cu); |
13458 | if (previous_prefix[0] != '\0') | |
13459 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 13460 | previous_prefix, name, 0, cu); |
0114d602 DJ |
13461 | |
13462 | /* Create the type. */ | |
13463 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
13464 | objfile); | |
abee88f2 | 13465 | TYPE_NAME (type) = name; |
0114d602 DJ |
13466 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
13467 | ||
60531b24 | 13468 | return set_die_type (die, type, cu); |
0114d602 DJ |
13469 | } |
13470 | ||
13471 | /* Read a C++ namespace. */ | |
13472 | ||
13473 | static void | |
13474 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
13475 | { | |
13476 | struct objfile *objfile = cu->objfile; | |
0114d602 | 13477 | int is_anonymous; |
9219021c | 13478 | |
5c4e30ca DC |
13479 | /* Add a symbol associated to this if we haven't seen the namespace |
13480 | before. Also, add a using directive if it's an anonymous | |
13481 | namespace. */ | |
9219021c | 13482 | |
f2f0e013 | 13483 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
13484 | { |
13485 | struct type *type; | |
13486 | ||
0114d602 | 13487 | type = read_type_die (die, cu); |
e7c27a73 | 13488 | new_symbol (die, type, cu); |
5c4e30ca | 13489 | |
e8e80198 | 13490 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 13491 | if (is_anonymous) |
0114d602 DJ |
13492 | { |
13493 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 13494 | |
c0cc3a76 | 13495 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 13496 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 13497 | } |
5c4e30ca | 13498 | } |
9219021c | 13499 | |
639d11d3 | 13500 | if (die->child != NULL) |
d9fa45fe | 13501 | { |
639d11d3 | 13502 | struct die_info *child_die = die->child; |
6e70227d | 13503 | |
d9fa45fe DC |
13504 | while (child_die && child_die->tag) |
13505 | { | |
e7c27a73 | 13506 | process_die (child_die, cu); |
d9fa45fe DC |
13507 | child_die = sibling_die (child_die); |
13508 | } | |
13509 | } | |
38d518c9 EZ |
13510 | } |
13511 | ||
f55ee35c JK |
13512 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
13513 | imported module. Still we need that type as local Fortran "use ... only" | |
13514 | declaration imports depend on the created type in determine_prefix. */ | |
13515 | ||
13516 | static struct type * | |
13517 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
13518 | { | |
13519 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 13520 | const char *module_name; |
f55ee35c JK |
13521 | struct type *type; |
13522 | ||
13523 | module_name = dwarf2_name (die, cu); | |
13524 | if (!module_name) | |
3e43a32a MS |
13525 | complaint (&symfile_complaints, |
13526 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 13527 | die->offset.sect_off); |
f55ee35c JK |
13528 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
13529 | ||
13530 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
13531 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
13532 | ||
13533 | return set_die_type (die, type, cu); | |
13534 | } | |
13535 | ||
5d7cb8df JK |
13536 | /* Read a Fortran module. */ |
13537 | ||
13538 | static void | |
13539 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
13540 | { | |
13541 | struct die_info *child_die = die->child; | |
13542 | ||
5d7cb8df JK |
13543 | while (child_die && child_die->tag) |
13544 | { | |
13545 | process_die (child_die, cu); | |
13546 | child_die = sibling_die (child_die); | |
13547 | } | |
13548 | } | |
13549 | ||
38d518c9 EZ |
13550 | /* Return the name of the namespace represented by DIE. Set |
13551 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
13552 | namespace. */ | |
13553 | ||
13554 | static const char * | |
e142c38c | 13555 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
13556 | { |
13557 | struct die_info *current_die; | |
13558 | const char *name = NULL; | |
13559 | ||
13560 | /* Loop through the extensions until we find a name. */ | |
13561 | ||
13562 | for (current_die = die; | |
13563 | current_die != NULL; | |
f2f0e013 | 13564 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 13565 | { |
e142c38c | 13566 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
13567 | if (name != NULL) |
13568 | break; | |
13569 | } | |
13570 | ||
13571 | /* Is it an anonymous namespace? */ | |
13572 | ||
13573 | *is_anonymous = (name == NULL); | |
13574 | if (*is_anonymous) | |
2b1dbab0 | 13575 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
13576 | |
13577 | return name; | |
d9fa45fe DC |
13578 | } |
13579 | ||
c906108c SS |
13580 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
13581 | the user defined type vector. */ | |
13582 | ||
f792889a | 13583 | static struct type * |
e7c27a73 | 13584 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13585 | { |
5e2b427d | 13586 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 13587 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 13588 | struct type *type; |
8b2dbe47 KB |
13589 | struct attribute *attr_byte_size; |
13590 | struct attribute *attr_address_class; | |
13591 | int byte_size, addr_class; | |
7e314c57 JK |
13592 | struct type *target_type; |
13593 | ||
13594 | target_type = die_type (die, cu); | |
c906108c | 13595 | |
7e314c57 JK |
13596 | /* The die_type call above may have already set the type for this DIE. */ |
13597 | type = get_die_type (die, cu); | |
13598 | if (type) | |
13599 | return type; | |
13600 | ||
13601 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 13602 | |
e142c38c | 13603 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
13604 | if (attr_byte_size) |
13605 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 13606 | else |
8b2dbe47 KB |
13607 | byte_size = cu_header->addr_size; |
13608 | ||
e142c38c | 13609 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
13610 | if (attr_address_class) |
13611 | addr_class = DW_UNSND (attr_address_class); | |
13612 | else | |
13613 | addr_class = DW_ADDR_none; | |
13614 | ||
13615 | /* If the pointer size or address class is different than the | |
13616 | default, create a type variant marked as such and set the | |
13617 | length accordingly. */ | |
13618 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 13619 | { |
5e2b427d | 13620 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
13621 | { |
13622 | int type_flags; | |
13623 | ||
849957d9 | 13624 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 13625 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
13626 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
13627 | == 0); | |
8b2dbe47 KB |
13628 | type = make_type_with_address_space (type, type_flags); |
13629 | } | |
13630 | else if (TYPE_LENGTH (type) != byte_size) | |
13631 | { | |
3e43a32a MS |
13632 | complaint (&symfile_complaints, |
13633 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 13634 | } |
6e70227d | 13635 | else |
9a619af0 MS |
13636 | { |
13637 | /* Should we also complain about unhandled address classes? */ | |
13638 | } | |
c906108c | 13639 | } |
8b2dbe47 KB |
13640 | |
13641 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 13642 | return set_die_type (die, type, cu); |
c906108c SS |
13643 | } |
13644 | ||
13645 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
13646 | the user defined type vector. */ | |
13647 | ||
f792889a | 13648 | static struct type * |
e7c27a73 | 13649 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
13650 | { |
13651 | struct type *type; | |
13652 | struct type *to_type; | |
13653 | struct type *domain; | |
13654 | ||
e7c27a73 DJ |
13655 | to_type = die_type (die, cu); |
13656 | domain = die_containing_type (die, cu); | |
0d5de010 | 13657 | |
7e314c57 JK |
13658 | /* The calls above may have already set the type for this DIE. */ |
13659 | type = get_die_type (die, cu); | |
13660 | if (type) | |
13661 | return type; | |
13662 | ||
0d5de010 DJ |
13663 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
13664 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
13665 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
13666 | { | |
13667 | struct type *new_type = alloc_type (cu->objfile); | |
13668 | ||
13669 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
13670 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
13671 | TYPE_VARARGS (to_type)); | |
13672 | type = lookup_methodptr_type (new_type); | |
13673 | } | |
0d5de010 DJ |
13674 | else |
13675 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 13676 | |
f792889a | 13677 | return set_die_type (die, type, cu); |
c906108c SS |
13678 | } |
13679 | ||
13680 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
13681 | the user defined type vector. */ | |
13682 | ||
f792889a | 13683 | static struct type * |
e7c27a73 | 13684 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13685 | { |
e7c27a73 | 13686 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 13687 | struct type *type, *target_type; |
c906108c SS |
13688 | struct attribute *attr; |
13689 | ||
7e314c57 JK |
13690 | target_type = die_type (die, cu); |
13691 | ||
13692 | /* The die_type call above may have already set the type for this DIE. */ | |
13693 | type = get_die_type (die, cu); | |
13694 | if (type) | |
13695 | return type; | |
13696 | ||
13697 | type = lookup_reference_type (target_type); | |
e142c38c | 13698 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13699 | if (attr) |
13700 | { | |
13701 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13702 | } | |
13703 | else | |
13704 | { | |
107d2387 | 13705 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 13706 | } |
f792889a | 13707 | return set_die_type (die, type, cu); |
c906108c SS |
13708 | } |
13709 | ||
f792889a | 13710 | static struct type * |
e7c27a73 | 13711 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13712 | { |
f792889a | 13713 | struct type *base_type, *cv_type; |
c906108c | 13714 | |
e7c27a73 | 13715 | base_type = die_type (die, cu); |
7e314c57 JK |
13716 | |
13717 | /* The die_type call above may have already set the type for this DIE. */ | |
13718 | cv_type = get_die_type (die, cu); | |
13719 | if (cv_type) | |
13720 | return cv_type; | |
13721 | ||
2f608a3a KW |
13722 | /* In case the const qualifier is applied to an array type, the element type |
13723 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
13724 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
13725 | { | |
13726 | struct type *el_type, *inner_array; | |
13727 | ||
13728 | base_type = copy_type (base_type); | |
13729 | inner_array = base_type; | |
13730 | ||
13731 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
13732 | { | |
13733 | TYPE_TARGET_TYPE (inner_array) = | |
13734 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
13735 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
13736 | } | |
13737 | ||
13738 | el_type = TYPE_TARGET_TYPE (inner_array); | |
13739 | TYPE_TARGET_TYPE (inner_array) = | |
13740 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
13741 | ||
13742 | return set_die_type (die, base_type, cu); | |
13743 | } | |
13744 | ||
f792889a DJ |
13745 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
13746 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13747 | } |
13748 | ||
f792889a | 13749 | static struct type * |
e7c27a73 | 13750 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13751 | { |
f792889a | 13752 | struct type *base_type, *cv_type; |
c906108c | 13753 | |
e7c27a73 | 13754 | base_type = die_type (die, cu); |
7e314c57 JK |
13755 | |
13756 | /* The die_type call above may have already set the type for this DIE. */ | |
13757 | cv_type = get_die_type (die, cu); | |
13758 | if (cv_type) | |
13759 | return cv_type; | |
13760 | ||
f792889a DJ |
13761 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
13762 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13763 | } |
13764 | ||
06d66ee9 TT |
13765 | /* Handle DW_TAG_restrict_type. */ |
13766 | ||
13767 | static struct type * | |
13768 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
13769 | { | |
13770 | struct type *base_type, *cv_type; | |
13771 | ||
13772 | base_type = die_type (die, cu); | |
13773 | ||
13774 | /* The die_type call above may have already set the type for this DIE. */ | |
13775 | cv_type = get_die_type (die, cu); | |
13776 | if (cv_type) | |
13777 | return cv_type; | |
13778 | ||
13779 | cv_type = make_restrict_type (base_type); | |
13780 | return set_die_type (die, cv_type, cu); | |
13781 | } | |
13782 | ||
c906108c SS |
13783 | /* Extract all information from a DW_TAG_string_type DIE and add to |
13784 | the user defined type vector. It isn't really a user defined type, | |
13785 | but it behaves like one, with other DIE's using an AT_user_def_type | |
13786 | attribute to reference it. */ | |
13787 | ||
f792889a | 13788 | static struct type * |
e7c27a73 | 13789 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13790 | { |
e7c27a73 | 13791 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 13792 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13793 | struct type *type, *range_type, *index_type, *char_type; |
13794 | struct attribute *attr; | |
13795 | unsigned int length; | |
13796 | ||
e142c38c | 13797 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
13798 | if (attr) |
13799 | { | |
13800 | length = DW_UNSND (attr); | |
13801 | } | |
13802 | else | |
13803 | { | |
0963b4bd | 13804 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 13805 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
13806 | if (attr) |
13807 | { | |
13808 | length = DW_UNSND (attr); | |
13809 | } | |
13810 | else | |
13811 | { | |
13812 | length = 1; | |
13813 | } | |
c906108c | 13814 | } |
6ccb9162 | 13815 | |
46bf5051 | 13816 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13817 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
13818 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
13819 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 13820 | |
f792889a | 13821 | return set_die_type (die, type, cu); |
c906108c SS |
13822 | } |
13823 | ||
4d804846 JB |
13824 | /* Assuming that DIE corresponds to a function, returns nonzero |
13825 | if the function is prototyped. */ | |
13826 | ||
13827 | static int | |
13828 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
13829 | { | |
13830 | struct attribute *attr; | |
13831 | ||
13832 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
13833 | if (attr && (DW_UNSND (attr) != 0)) | |
13834 | return 1; | |
13835 | ||
13836 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
13837 | is only meaninful for C, but the concept also extends to other | |
13838 | languages that allow unprototyped functions (Eg: Objective C). | |
13839 | For all other languages, assume that functions are always | |
13840 | prototyped. */ | |
13841 | if (cu->language != language_c | |
13842 | && cu->language != language_objc | |
13843 | && cu->language != language_opencl) | |
13844 | return 1; | |
13845 | ||
13846 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
13847 | prototyped and unprototyped functions; default to prototyped, | |
13848 | since that is more common in modern code (and RealView warns | |
13849 | about unprototyped functions). */ | |
13850 | if (producer_is_realview (cu->producer)) | |
13851 | return 1; | |
13852 | ||
13853 | return 0; | |
13854 | } | |
13855 | ||
c906108c SS |
13856 | /* Handle DIES due to C code like: |
13857 | ||
13858 | struct foo | |
c5aa993b JM |
13859 | { |
13860 | int (*funcp)(int a, long l); | |
13861 | int b; | |
13862 | }; | |
c906108c | 13863 | |
0963b4bd | 13864 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 13865 | |
f792889a | 13866 | static struct type * |
e7c27a73 | 13867 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13868 | { |
bb5ed363 | 13869 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
13870 | struct type *type; /* Type that this function returns. */ |
13871 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
13872 | struct attribute *attr; |
13873 | ||
e7c27a73 | 13874 | type = die_type (die, cu); |
7e314c57 JK |
13875 | |
13876 | /* The die_type call above may have already set the type for this DIE. */ | |
13877 | ftype = get_die_type (die, cu); | |
13878 | if (ftype) | |
13879 | return ftype; | |
13880 | ||
0c8b41f1 | 13881 | ftype = lookup_function_type (type); |
c906108c | 13882 | |
4d804846 | 13883 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 13884 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 13885 | |
c055b101 CV |
13886 | /* Store the calling convention in the type if it's available in |
13887 | the subroutine die. Otherwise set the calling convention to | |
13888 | the default value DW_CC_normal. */ | |
13889 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
13890 | if (attr) |
13891 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
13892 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
13893 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
13894 | else | |
13895 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
13896 | |
13897 | /* We need to add the subroutine type to the die immediately so | |
13898 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 13899 | declared as the same subroutine type. */ |
76c10ea2 | 13900 | set_die_type (die, ftype, cu); |
6e70227d | 13901 | |
639d11d3 | 13902 | if (die->child != NULL) |
c906108c | 13903 | { |
bb5ed363 | 13904 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 13905 | struct die_info *child_die; |
8072405b | 13906 | int nparams, iparams; |
c906108c SS |
13907 | |
13908 | /* Count the number of parameters. | |
13909 | FIXME: GDB currently ignores vararg functions, but knows about | |
13910 | vararg member functions. */ | |
8072405b | 13911 | nparams = 0; |
639d11d3 | 13912 | child_die = die->child; |
c906108c SS |
13913 | while (child_die && child_die->tag) |
13914 | { | |
13915 | if (child_die->tag == DW_TAG_formal_parameter) | |
13916 | nparams++; | |
13917 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 13918 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
13919 | child_die = sibling_die (child_die); |
13920 | } | |
13921 | ||
13922 | /* Allocate storage for parameters and fill them in. */ | |
13923 | TYPE_NFIELDS (ftype) = nparams; | |
13924 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 13925 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 13926 | |
8072405b JK |
13927 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
13928 | even if we error out during the parameters reading below. */ | |
13929 | for (iparams = 0; iparams < nparams; iparams++) | |
13930 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
13931 | ||
13932 | iparams = 0; | |
639d11d3 | 13933 | child_die = die->child; |
c906108c SS |
13934 | while (child_die && child_die->tag) |
13935 | { | |
13936 | if (child_die->tag == DW_TAG_formal_parameter) | |
13937 | { | |
3ce3b1ba PA |
13938 | struct type *arg_type; |
13939 | ||
13940 | /* DWARF version 2 has no clean way to discern C++ | |
13941 | static and non-static member functions. G++ helps | |
13942 | GDB by marking the first parameter for non-static | |
13943 | member functions (which is the this pointer) as | |
13944 | artificial. We pass this information to | |
13945 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
13946 | ||
13947 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
13948 | 4.5 does not yet generate. */ | |
e142c38c | 13949 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
13950 | if (attr) |
13951 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
13952 | else | |
418835cc KS |
13953 | { |
13954 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
13955 | ||
13956 | /* GCC/43521: In java, the formal parameter | |
13957 | "this" is sometimes not marked with DW_AT_artificial. */ | |
13958 | if (cu->language == language_java) | |
13959 | { | |
13960 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 13961 | |
418835cc KS |
13962 | if (name && !strcmp (name, "this")) |
13963 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
13964 | } | |
13965 | } | |
3ce3b1ba PA |
13966 | arg_type = die_type (child_die, cu); |
13967 | ||
13968 | /* RealView does not mark THIS as const, which the testsuite | |
13969 | expects. GCC marks THIS as const in method definitions, | |
13970 | but not in the class specifications (GCC PR 43053). */ | |
13971 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
13972 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
13973 | { | |
13974 | int is_this = 0; | |
13975 | struct dwarf2_cu *arg_cu = cu; | |
13976 | const char *name = dwarf2_name (child_die, cu); | |
13977 | ||
13978 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
13979 | if (attr) | |
13980 | { | |
13981 | /* If the compiler emits this, use it. */ | |
13982 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
13983 | is_this = 1; | |
13984 | } | |
13985 | else if (name && strcmp (name, "this") == 0) | |
13986 | /* Function definitions will have the argument names. */ | |
13987 | is_this = 1; | |
13988 | else if (name == NULL && iparams == 0) | |
13989 | /* Declarations may not have the names, so like | |
13990 | elsewhere in GDB, assume an artificial first | |
13991 | argument is "this". */ | |
13992 | is_this = 1; | |
13993 | ||
13994 | if (is_this) | |
13995 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
13996 | arg_type, 0); | |
13997 | } | |
13998 | ||
13999 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14000 | iparams++; |
14001 | } | |
14002 | child_die = sibling_die (child_die); | |
14003 | } | |
14004 | } | |
14005 | ||
76c10ea2 | 14006 | return ftype; |
c906108c SS |
14007 | } |
14008 | ||
f792889a | 14009 | static struct type * |
e7c27a73 | 14010 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14011 | { |
e7c27a73 | 14012 | struct objfile *objfile = cu->objfile; |
0114d602 | 14013 | const char *name = NULL; |
3c8e0968 | 14014 | struct type *this_type, *target_type; |
c906108c | 14015 | |
94af9270 | 14016 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14017 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14018 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14019 | TYPE_NAME (this_type) = name; |
f792889a | 14020 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14021 | target_type = die_type (die, cu); |
14022 | if (target_type != this_type) | |
14023 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14024 | else | |
14025 | { | |
14026 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14027 | spec and cause infinite loops in GDB. */ | |
14028 | complaint (&symfile_complaints, | |
14029 | _("Self-referential DW_TAG_typedef " | |
14030 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14031 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14032 | TYPE_TARGET_TYPE (this_type) = NULL; |
14033 | } | |
f792889a | 14034 | return this_type; |
c906108c SS |
14035 | } |
14036 | ||
14037 | /* Find a representation of a given base type and install | |
14038 | it in the TYPE field of the die. */ | |
14039 | ||
f792889a | 14040 | static struct type * |
e7c27a73 | 14041 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14042 | { |
e7c27a73 | 14043 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14044 | struct type *type; |
14045 | struct attribute *attr; | |
14046 | int encoding = 0, size = 0; | |
15d034d0 | 14047 | const char *name; |
6ccb9162 UW |
14048 | enum type_code code = TYPE_CODE_INT; |
14049 | int type_flags = 0; | |
14050 | struct type *target_type = NULL; | |
c906108c | 14051 | |
e142c38c | 14052 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14053 | if (attr) |
14054 | { | |
14055 | encoding = DW_UNSND (attr); | |
14056 | } | |
e142c38c | 14057 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14058 | if (attr) |
14059 | { | |
14060 | size = DW_UNSND (attr); | |
14061 | } | |
39cbfefa | 14062 | name = dwarf2_name (die, cu); |
6ccb9162 | 14063 | if (!name) |
c906108c | 14064 | { |
6ccb9162 UW |
14065 | complaint (&symfile_complaints, |
14066 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14067 | } |
6ccb9162 UW |
14068 | |
14069 | switch (encoding) | |
c906108c | 14070 | { |
6ccb9162 UW |
14071 | case DW_ATE_address: |
14072 | /* Turn DW_ATE_address into a void * pointer. */ | |
14073 | code = TYPE_CODE_PTR; | |
14074 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14075 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14076 | break; | |
14077 | case DW_ATE_boolean: | |
14078 | code = TYPE_CODE_BOOL; | |
14079 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14080 | break; | |
14081 | case DW_ATE_complex_float: | |
14082 | code = TYPE_CODE_COMPLEX; | |
14083 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14084 | break; | |
14085 | case DW_ATE_decimal_float: | |
14086 | code = TYPE_CODE_DECFLOAT; | |
14087 | break; | |
14088 | case DW_ATE_float: | |
14089 | code = TYPE_CODE_FLT; | |
14090 | break; | |
14091 | case DW_ATE_signed: | |
14092 | break; | |
14093 | case DW_ATE_unsigned: | |
14094 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14095 | if (cu->language == language_fortran |
14096 | && name | |
14097 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
14098 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
14099 | break; |
14100 | case DW_ATE_signed_char: | |
6e70227d | 14101 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14102 | || cu->language == language_pascal |
14103 | || cu->language == language_fortran) | |
6ccb9162 UW |
14104 | code = TYPE_CODE_CHAR; |
14105 | break; | |
14106 | case DW_ATE_unsigned_char: | |
868a0084 | 14107 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14108 | || cu->language == language_pascal |
14109 | || cu->language == language_fortran) | |
6ccb9162 UW |
14110 | code = TYPE_CODE_CHAR; |
14111 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14112 | break; | |
75079b2b TT |
14113 | case DW_ATE_UTF: |
14114 | /* We just treat this as an integer and then recognize the | |
14115 | type by name elsewhere. */ | |
14116 | break; | |
14117 | ||
6ccb9162 UW |
14118 | default: |
14119 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14120 | dwarf_type_encoding_name (encoding)); | |
14121 | break; | |
c906108c | 14122 | } |
6ccb9162 | 14123 | |
0114d602 DJ |
14124 | type = init_type (code, size, type_flags, NULL, objfile); |
14125 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14126 | TYPE_TARGET_TYPE (type) = target_type; |
14127 | ||
0114d602 | 14128 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14129 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14130 | |
f792889a | 14131 | return set_die_type (die, type, cu); |
c906108c SS |
14132 | } |
14133 | ||
a02abb62 JB |
14134 | /* Read the given DW_AT_subrange DIE. */ |
14135 | ||
f792889a | 14136 | static struct type * |
a02abb62 JB |
14137 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14138 | { | |
4c9ad8c2 | 14139 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14140 | struct type *range_type; |
14141 | struct attribute *attr; | |
4fae6e18 JK |
14142 | LONGEST low, high; |
14143 | int low_default_is_valid; | |
15d034d0 | 14144 | const char *name; |
43bbcdc2 | 14145 | LONGEST negative_mask; |
e77813c8 | 14146 | |
4c9ad8c2 TT |
14147 | orig_base_type = die_type (die, cu); |
14148 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14149 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14150 | creating the range type, but we use the result of check_typedef | |
14151 | when examining properties of the type. */ | |
14152 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14153 | |
7e314c57 JK |
14154 | /* The die_type call above may have already set the type for this DIE. */ |
14155 | range_type = get_die_type (die, cu); | |
14156 | if (range_type) | |
14157 | return range_type; | |
14158 | ||
4fae6e18 JK |
14159 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14160 | omitting DW_AT_lower_bound. */ | |
14161 | switch (cu->language) | |
6e70227d | 14162 | { |
4fae6e18 JK |
14163 | case language_c: |
14164 | case language_cplus: | |
14165 | low = 0; | |
14166 | low_default_is_valid = 1; | |
14167 | break; | |
14168 | case language_fortran: | |
14169 | low = 1; | |
14170 | low_default_is_valid = 1; | |
14171 | break; | |
14172 | case language_d: | |
14173 | case language_java: | |
14174 | case language_objc: | |
14175 | low = 0; | |
14176 | low_default_is_valid = (cu->header.version >= 4); | |
14177 | break; | |
14178 | case language_ada: | |
14179 | case language_m2: | |
14180 | case language_pascal: | |
a02abb62 | 14181 | low = 1; |
4fae6e18 JK |
14182 | low_default_is_valid = (cu->header.version >= 4); |
14183 | break; | |
14184 | default: | |
14185 | low = 0; | |
14186 | low_default_is_valid = 0; | |
14187 | break; | |
a02abb62 JB |
14188 | } |
14189 | ||
dd5e6932 DJ |
14190 | /* FIXME: For variable sized arrays either of these could be |
14191 | a variable rather than a constant value. We'll allow it, | |
14192 | but we don't know how to handle it. */ | |
e142c38c | 14193 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14194 | if (attr) |
4fae6e18 JK |
14195 | low = dwarf2_get_attr_constant_value (attr, low); |
14196 | else if (!low_default_is_valid) | |
14197 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14198 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14199 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14200 | |
e142c38c | 14201 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 14202 | if (attr) |
6e70227d | 14203 | { |
7771576e | 14204 | if (attr_form_is_block (attr) || attr_form_is_ref (attr)) |
a02abb62 JB |
14205 | { |
14206 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 14207 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
14208 | FIXME: GDB does not yet know how to handle dynamic |
14209 | arrays properly, treat them as arrays with unspecified | |
14210 | length for now. | |
14211 | ||
14212 | FIXME: jimb/2003-09-22: GDB does not really know | |
14213 | how to handle arrays of unspecified length | |
14214 | either; we just represent them as zero-length | |
14215 | arrays. Choose an appropriate upper bound given | |
14216 | the lower bound we've computed above. */ | |
14217 | high = low - 1; | |
14218 | } | |
14219 | else | |
14220 | high = dwarf2_get_attr_constant_value (attr, 1); | |
14221 | } | |
e77813c8 PM |
14222 | else |
14223 | { | |
14224 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
14225 | if (attr) | |
14226 | { | |
14227 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
14228 | high = low + count - 1; | |
14229 | } | |
c2ff108b JK |
14230 | else |
14231 | { | |
14232 | /* Unspecified array length. */ | |
14233 | high = low - 1; | |
14234 | } | |
e77813c8 PM |
14235 | } |
14236 | ||
14237 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14238 | without specifying a base type. | |
14239 | In that case, the base type must be set to the type of | |
14240 | the lower bound, upper bound or count, in that order, if any of these | |
14241 | three attributes references an object that has a type. | |
14242 | If no base type is found, the Dwarf-2 specifications say that | |
14243 | a signed integer type of size equal to the size of an address should | |
14244 | be used. | |
14245 | For the following C code: `extern char gdb_int [];' | |
14246 | GCC produces an empty range DIE. | |
14247 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14248 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14249 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14250 | { | |
14251 | struct objfile *objfile = cu->objfile; | |
14252 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14253 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14254 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14255 | ||
14256 | /* Test "int", "long int", and "long long int" objfile types, | |
14257 | and select the first one having a size above or equal to the | |
14258 | architecture address size. */ | |
14259 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14260 | base_type = int_type; | |
14261 | else | |
14262 | { | |
14263 | int_type = objfile_type (objfile)->builtin_long; | |
14264 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14265 | base_type = int_type; | |
14266 | else | |
14267 | { | |
14268 | int_type = objfile_type (objfile)->builtin_long_long; | |
14269 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14270 | base_type = int_type; | |
14271 | } | |
14272 | } | |
14273 | } | |
a02abb62 | 14274 | |
6e70227d | 14275 | negative_mask = |
43bbcdc2 PH |
14276 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
14277 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
14278 | low |= negative_mask; | |
14279 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
14280 | high |= negative_mask; | |
14281 | ||
4c9ad8c2 | 14282 | range_type = create_range_type (NULL, orig_base_type, low, high); |
a02abb62 | 14283 | |
bbb0eef6 JK |
14284 | /* Mark arrays with dynamic length at least as an array of unspecified |
14285 | length. GDB could check the boundary but before it gets implemented at | |
14286 | least allow accessing the array elements. */ | |
d48323d8 | 14287 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
14288 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
14289 | ||
c2ff108b JK |
14290 | /* Ada expects an empty array on no boundary attributes. */ |
14291 | if (attr == NULL && cu->language != language_ada) | |
14292 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
14293 | ||
39cbfefa DJ |
14294 | name = dwarf2_name (die, cu); |
14295 | if (name) | |
14296 | TYPE_NAME (range_type) = name; | |
6e70227d | 14297 | |
e142c38c | 14298 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
14299 | if (attr) |
14300 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
14301 | ||
7e314c57 JK |
14302 | set_die_type (die, range_type, cu); |
14303 | ||
14304 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14305 | set_descriptive_type (range_type, die, cu); |
14306 | ||
7e314c57 | 14307 | return range_type; |
a02abb62 | 14308 | } |
6e70227d | 14309 | |
f792889a | 14310 | static struct type * |
81a17f79 JB |
14311 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
14312 | { | |
14313 | struct type *type; | |
81a17f79 | 14314 | |
81a17f79 JB |
14315 | /* For now, we only support the C meaning of an unspecified type: void. */ |
14316 | ||
0114d602 DJ |
14317 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
14318 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 14319 | |
f792889a | 14320 | return set_die_type (die, type, cu); |
81a17f79 | 14321 | } |
a02abb62 | 14322 | |
639d11d3 DC |
14323 | /* Read a single die and all its descendents. Set the die's sibling |
14324 | field to NULL; set other fields in the die correctly, and set all | |
14325 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
14326 | location of the info_ptr after reading all of those dies. PARENT | |
14327 | is the parent of the die in question. */ | |
14328 | ||
14329 | static struct die_info * | |
dee91e82 | 14330 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
14331 | const gdb_byte *info_ptr, |
14332 | const gdb_byte **new_info_ptr, | |
dee91e82 | 14333 | struct die_info *parent) |
639d11d3 DC |
14334 | { |
14335 | struct die_info *die; | |
d521ce57 | 14336 | const gdb_byte *cur_ptr; |
639d11d3 DC |
14337 | int has_children; |
14338 | ||
bf6af496 | 14339 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
14340 | if (die == NULL) |
14341 | { | |
14342 | *new_info_ptr = cur_ptr; | |
14343 | return NULL; | |
14344 | } | |
93311388 | 14345 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
14346 | |
14347 | if (has_children) | |
bf6af496 | 14348 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
14349 | else |
14350 | { | |
14351 | die->child = NULL; | |
14352 | *new_info_ptr = cur_ptr; | |
14353 | } | |
14354 | ||
14355 | die->sibling = NULL; | |
14356 | die->parent = parent; | |
14357 | return die; | |
14358 | } | |
14359 | ||
14360 | /* Read a die, all of its descendents, and all of its siblings; set | |
14361 | all of the fields of all of the dies correctly. Arguments are as | |
14362 | in read_die_and_children. */ | |
14363 | ||
14364 | static struct die_info * | |
bf6af496 | 14365 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
14366 | const gdb_byte *info_ptr, |
14367 | const gdb_byte **new_info_ptr, | |
bf6af496 | 14368 | struct die_info *parent) |
639d11d3 DC |
14369 | { |
14370 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 14371 | const gdb_byte *cur_ptr; |
639d11d3 | 14372 | |
c906108c | 14373 | cur_ptr = info_ptr; |
639d11d3 DC |
14374 | first_die = last_sibling = NULL; |
14375 | ||
14376 | while (1) | |
c906108c | 14377 | { |
639d11d3 | 14378 | struct die_info *die |
dee91e82 | 14379 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 14380 | |
1d325ec1 | 14381 | if (die == NULL) |
c906108c | 14382 | { |
639d11d3 DC |
14383 | *new_info_ptr = cur_ptr; |
14384 | return first_die; | |
c906108c | 14385 | } |
1d325ec1 DJ |
14386 | |
14387 | if (!first_die) | |
14388 | first_die = die; | |
c906108c | 14389 | else |
1d325ec1 DJ |
14390 | last_sibling->sibling = die; |
14391 | ||
14392 | last_sibling = die; | |
c906108c | 14393 | } |
c906108c SS |
14394 | } |
14395 | ||
bf6af496 DE |
14396 | /* Read a die, all of its descendents, and all of its siblings; set |
14397 | all of the fields of all of the dies correctly. Arguments are as | |
14398 | in read_die_and_children. | |
14399 | This the main entry point for reading a DIE and all its children. */ | |
14400 | ||
14401 | static struct die_info * | |
14402 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
14403 | const gdb_byte *info_ptr, |
14404 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
14405 | struct die_info *parent) |
14406 | { | |
14407 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
14408 | new_info_ptr, parent); | |
14409 | ||
14410 | if (dwarf2_die_debug) | |
14411 | { | |
14412 | fprintf_unfiltered (gdb_stdlog, | |
14413 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14414 | get_section_name (reader->die_section), |
bf6af496 DE |
14415 | (unsigned) (info_ptr - reader->die_section->buffer), |
14416 | bfd_get_filename (reader->abfd)); | |
14417 | dump_die (die, dwarf2_die_debug); | |
14418 | } | |
14419 | ||
14420 | return die; | |
14421 | } | |
14422 | ||
3019eac3 DE |
14423 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
14424 | attributes. | |
14425 | The caller is responsible for filling in the extra attributes | |
14426 | and updating (*DIEP)->num_attrs. | |
14427 | Set DIEP to point to a newly allocated die with its information, | |
14428 | except for its child, sibling, and parent fields. | |
14429 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 14430 | |
d521ce57 | 14431 | static const gdb_byte * |
3019eac3 | 14432 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 14433 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 14434 | int *has_children, int num_extra_attrs) |
93311388 | 14435 | { |
b64f50a1 JK |
14436 | unsigned int abbrev_number, bytes_read, i; |
14437 | sect_offset offset; | |
93311388 DE |
14438 | struct abbrev_info *abbrev; |
14439 | struct die_info *die; | |
14440 | struct dwarf2_cu *cu = reader->cu; | |
14441 | bfd *abfd = reader->abfd; | |
14442 | ||
b64f50a1 | 14443 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
14444 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14445 | info_ptr += bytes_read; | |
14446 | if (!abbrev_number) | |
14447 | { | |
14448 | *diep = NULL; | |
14449 | *has_children = 0; | |
14450 | return info_ptr; | |
14451 | } | |
14452 | ||
433df2d4 | 14453 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 14454 | if (!abbrev) |
348e048f DE |
14455 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
14456 | abbrev_number, | |
14457 | bfd_get_filename (abfd)); | |
14458 | ||
3019eac3 | 14459 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
14460 | die->offset = offset; |
14461 | die->tag = abbrev->tag; | |
14462 | die->abbrev = abbrev_number; | |
14463 | ||
3019eac3 DE |
14464 | /* Make the result usable. |
14465 | The caller needs to update num_attrs after adding the extra | |
14466 | attributes. */ | |
93311388 DE |
14467 | die->num_attrs = abbrev->num_attrs; |
14468 | ||
14469 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
14470 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
14471 | info_ptr); | |
93311388 DE |
14472 | |
14473 | *diep = die; | |
14474 | *has_children = abbrev->has_children; | |
14475 | return info_ptr; | |
14476 | } | |
14477 | ||
3019eac3 DE |
14478 | /* Read a die and all its attributes. |
14479 | Set DIEP to point to a newly allocated die with its information, | |
14480 | except for its child, sibling, and parent fields. | |
14481 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
14482 | ||
d521ce57 | 14483 | static const gdb_byte * |
3019eac3 | 14484 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 14485 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
14486 | int *has_children) |
14487 | { | |
d521ce57 | 14488 | const gdb_byte *result; |
bf6af496 DE |
14489 | |
14490 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
14491 | ||
14492 | if (dwarf2_die_debug) | |
14493 | { | |
14494 | fprintf_unfiltered (gdb_stdlog, | |
14495 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14496 | get_section_name (reader->die_section), |
bf6af496 DE |
14497 | (unsigned) (info_ptr - reader->die_section->buffer), |
14498 | bfd_get_filename (reader->abfd)); | |
14499 | dump_die (*diep, dwarf2_die_debug); | |
14500 | } | |
14501 | ||
14502 | return result; | |
3019eac3 | 14503 | } |
433df2d4 DE |
14504 | \f |
14505 | /* Abbreviation tables. | |
3019eac3 | 14506 | |
433df2d4 | 14507 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
14508 | stored in a separate .debug_abbrev section. Before we read any |
14509 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
14510 | in a hash table. */ |
14511 | ||
14512 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
14513 | ||
14514 | static struct abbrev_info * | |
14515 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
14516 | { | |
14517 | struct abbrev_info *abbrev; | |
14518 | ||
14519 | abbrev = (struct abbrev_info *) | |
14520 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
14521 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
14522 | return abbrev; | |
14523 | } | |
14524 | ||
14525 | /* Add an abbreviation to the table. */ | |
c906108c SS |
14526 | |
14527 | static void | |
433df2d4 DE |
14528 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
14529 | unsigned int abbrev_number, | |
14530 | struct abbrev_info *abbrev) | |
14531 | { | |
14532 | unsigned int hash_number; | |
14533 | ||
14534 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14535 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
14536 | abbrev_table->abbrevs[hash_number] = abbrev; | |
14537 | } | |
dee91e82 | 14538 | |
433df2d4 DE |
14539 | /* Look up an abbrev in the table. |
14540 | Returns NULL if the abbrev is not found. */ | |
14541 | ||
14542 | static struct abbrev_info * | |
14543 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
14544 | unsigned int abbrev_number) | |
c906108c | 14545 | { |
433df2d4 DE |
14546 | unsigned int hash_number; |
14547 | struct abbrev_info *abbrev; | |
14548 | ||
14549 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14550 | abbrev = abbrev_table->abbrevs[hash_number]; | |
14551 | ||
14552 | while (abbrev) | |
14553 | { | |
14554 | if (abbrev->number == abbrev_number) | |
14555 | return abbrev; | |
14556 | abbrev = abbrev->next; | |
14557 | } | |
14558 | return NULL; | |
14559 | } | |
14560 | ||
14561 | /* Read in an abbrev table. */ | |
14562 | ||
14563 | static struct abbrev_table * | |
14564 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
14565 | sect_offset offset) | |
14566 | { | |
14567 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 14568 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 14569 | struct abbrev_table *abbrev_table; |
d521ce57 | 14570 | const gdb_byte *abbrev_ptr; |
c906108c SS |
14571 | struct abbrev_info *cur_abbrev; |
14572 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 14573 | unsigned int abbrev_form; |
f3dd6933 DJ |
14574 | struct attr_abbrev *cur_attrs; |
14575 | unsigned int allocated_attrs; | |
c906108c | 14576 | |
433df2d4 | 14577 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 14578 | abbrev_table->offset = offset; |
433df2d4 DE |
14579 | obstack_init (&abbrev_table->abbrev_obstack); |
14580 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
14581 | (ABBREV_HASH_SIZE | |
14582 | * sizeof (struct abbrev_info *))); | |
14583 | memset (abbrev_table->abbrevs, 0, | |
14584 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 14585 | |
433df2d4 DE |
14586 | dwarf2_read_section (objfile, section); |
14587 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
14588 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14589 | abbrev_ptr += bytes_read; | |
14590 | ||
f3dd6933 DJ |
14591 | allocated_attrs = ATTR_ALLOC_CHUNK; |
14592 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 14593 | |
0963b4bd | 14594 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
14595 | while (abbrev_number) |
14596 | { | |
433df2d4 | 14597 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
14598 | |
14599 | /* read in abbrev header */ | |
14600 | cur_abbrev->number = abbrev_number; | |
14601 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14602 | abbrev_ptr += bytes_read; | |
14603 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
14604 | abbrev_ptr += 1; | |
14605 | ||
14606 | /* now read in declarations */ | |
14607 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14608 | abbrev_ptr += bytes_read; | |
14609 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14610 | abbrev_ptr += bytes_read; | |
14611 | while (abbrev_name) | |
14612 | { | |
f3dd6933 | 14613 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 14614 | { |
f3dd6933 DJ |
14615 | allocated_attrs += ATTR_ALLOC_CHUNK; |
14616 | cur_attrs | |
14617 | = xrealloc (cur_attrs, (allocated_attrs | |
14618 | * sizeof (struct attr_abbrev))); | |
c906108c | 14619 | } |
ae038cb0 | 14620 | |
f3dd6933 DJ |
14621 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
14622 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
14623 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14624 | abbrev_ptr += bytes_read; | |
14625 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14626 | abbrev_ptr += bytes_read; | |
14627 | } | |
14628 | ||
433df2d4 | 14629 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
14630 | (cur_abbrev->num_attrs |
14631 | * sizeof (struct attr_abbrev))); | |
14632 | memcpy (cur_abbrev->attrs, cur_attrs, | |
14633 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
14634 | ||
433df2d4 | 14635 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
14636 | |
14637 | /* Get next abbreviation. | |
14638 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
14639 | always properly terminated with an abbrev number of 0. |
14640 | Exit loop if we encounter an abbreviation which we have | |
14641 | already read (which means we are about to read the abbreviations | |
14642 | for the next compile unit) or if the end of the abbreviation | |
14643 | table is reached. */ | |
433df2d4 | 14644 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
14645 | break; |
14646 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14647 | abbrev_ptr += bytes_read; | |
433df2d4 | 14648 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
14649 | break; |
14650 | } | |
f3dd6933 DJ |
14651 | |
14652 | xfree (cur_attrs); | |
433df2d4 | 14653 | return abbrev_table; |
c906108c SS |
14654 | } |
14655 | ||
433df2d4 | 14656 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 14657 | |
c906108c | 14658 | static void |
433df2d4 | 14659 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 14660 | { |
433df2d4 DE |
14661 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
14662 | xfree (abbrev_table); | |
c906108c SS |
14663 | } |
14664 | ||
f4dc4d17 DE |
14665 | /* Same as abbrev_table_free but as a cleanup. |
14666 | We pass in a pointer to the pointer to the table so that we can | |
14667 | set the pointer to NULL when we're done. It also simplifies | |
14668 | build_type_unit_groups. */ | |
14669 | ||
14670 | static void | |
14671 | abbrev_table_free_cleanup (void *table_ptr) | |
14672 | { | |
14673 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
14674 | ||
14675 | if (*abbrev_table_ptr != NULL) | |
14676 | abbrev_table_free (*abbrev_table_ptr); | |
14677 | *abbrev_table_ptr = NULL; | |
14678 | } | |
14679 | ||
433df2d4 DE |
14680 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
14681 | ||
14682 | static void | |
14683 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
14684 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 14685 | { |
433df2d4 DE |
14686 | cu->abbrev_table = |
14687 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
14688 | } | |
c906108c | 14689 | |
433df2d4 | 14690 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 14691 | |
433df2d4 DE |
14692 | static void |
14693 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
14694 | { | |
14695 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 14696 | |
a2ce51a0 DE |
14697 | if (cu->abbrev_table != NULL) |
14698 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
14699 | /* Set this to NULL so that we SEGV if we try to read it later, |
14700 | and also because free_comp_unit verifies this is NULL. */ | |
14701 | cu->abbrev_table = NULL; | |
14702 | } | |
14703 | \f | |
72bf9492 DJ |
14704 | /* Returns nonzero if TAG represents a type that we might generate a partial |
14705 | symbol for. */ | |
14706 | ||
14707 | static int | |
14708 | is_type_tag_for_partial (int tag) | |
14709 | { | |
14710 | switch (tag) | |
14711 | { | |
14712 | #if 0 | |
14713 | /* Some types that would be reasonable to generate partial symbols for, | |
14714 | that we don't at present. */ | |
14715 | case DW_TAG_array_type: | |
14716 | case DW_TAG_file_type: | |
14717 | case DW_TAG_ptr_to_member_type: | |
14718 | case DW_TAG_set_type: | |
14719 | case DW_TAG_string_type: | |
14720 | case DW_TAG_subroutine_type: | |
14721 | #endif | |
14722 | case DW_TAG_base_type: | |
14723 | case DW_TAG_class_type: | |
680b30c7 | 14724 | case DW_TAG_interface_type: |
72bf9492 DJ |
14725 | case DW_TAG_enumeration_type: |
14726 | case DW_TAG_structure_type: | |
14727 | case DW_TAG_subrange_type: | |
14728 | case DW_TAG_typedef: | |
14729 | case DW_TAG_union_type: | |
14730 | return 1; | |
14731 | default: | |
14732 | return 0; | |
14733 | } | |
14734 | } | |
14735 | ||
14736 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
14737 | ||
14738 | static struct partial_die_info * | |
dee91e82 | 14739 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 14740 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 14741 | { |
dee91e82 | 14742 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 14743 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
14744 | struct partial_die_info *part_die; |
14745 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
14746 | struct abbrev_info *abbrev; | |
14747 | unsigned int bytes_read; | |
5afb4e99 | 14748 | unsigned int load_all = 0; |
72bf9492 DJ |
14749 | int nesting_level = 1; |
14750 | ||
14751 | parent_die = NULL; | |
14752 | last_die = NULL; | |
14753 | ||
7adf1e79 DE |
14754 | gdb_assert (cu->per_cu != NULL); |
14755 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
14756 | load_all = 1; |
14757 | ||
72bf9492 DJ |
14758 | cu->partial_dies |
14759 | = htab_create_alloc_ex (cu->header.length / 12, | |
14760 | partial_die_hash, | |
14761 | partial_die_eq, | |
14762 | NULL, | |
14763 | &cu->comp_unit_obstack, | |
14764 | hashtab_obstack_allocate, | |
14765 | dummy_obstack_deallocate); | |
14766 | ||
14767 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14768 | sizeof (struct partial_die_info)); | |
14769 | ||
14770 | while (1) | |
14771 | { | |
14772 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
14773 | ||
14774 | /* A NULL abbrev means the end of a series of children. */ | |
14775 | if (abbrev == NULL) | |
14776 | { | |
14777 | if (--nesting_level == 0) | |
14778 | { | |
14779 | /* PART_DIE was probably the last thing allocated on the | |
14780 | comp_unit_obstack, so we could call obstack_free | |
14781 | here. We don't do that because the waste is small, | |
14782 | and will be cleaned up when we're done with this | |
14783 | compilation unit. This way, we're also more robust | |
14784 | against other users of the comp_unit_obstack. */ | |
14785 | return first_die; | |
14786 | } | |
14787 | info_ptr += bytes_read; | |
14788 | last_die = parent_die; | |
14789 | parent_die = parent_die->die_parent; | |
14790 | continue; | |
14791 | } | |
14792 | ||
98bfdba5 PA |
14793 | /* Check for template arguments. We never save these; if |
14794 | they're seen, we just mark the parent, and go on our way. */ | |
14795 | if (parent_die != NULL | |
14796 | && cu->language == language_cplus | |
14797 | && (abbrev->tag == DW_TAG_template_type_param | |
14798 | || abbrev->tag == DW_TAG_template_value_param)) | |
14799 | { | |
14800 | parent_die->has_template_arguments = 1; | |
14801 | ||
14802 | if (!load_all) | |
14803 | { | |
14804 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 14805 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14806 | continue; |
14807 | } | |
14808 | } | |
14809 | ||
0d99eb77 | 14810 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
14811 | Skip their other children. */ |
14812 | if (!load_all | |
14813 | && cu->language == language_cplus | |
14814 | && parent_die != NULL | |
14815 | && parent_die->tag == DW_TAG_subprogram) | |
14816 | { | |
dee91e82 | 14817 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14818 | continue; |
14819 | } | |
14820 | ||
5afb4e99 DJ |
14821 | /* Check whether this DIE is interesting enough to save. Normally |
14822 | we would not be interested in members here, but there may be | |
14823 | later variables referencing them via DW_AT_specification (for | |
14824 | static members). */ | |
14825 | if (!load_all | |
14826 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 14827 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
14828 | && abbrev->tag != DW_TAG_enumerator |
14829 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 14830 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 14831 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 14832 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 14833 | && abbrev->tag != DW_TAG_module |
95554aad TT |
14834 | && abbrev->tag != DW_TAG_member |
14835 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
14836 | { |
14837 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 14838 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
14839 | continue; |
14840 | } | |
14841 | ||
dee91e82 DE |
14842 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
14843 | info_ptr); | |
72bf9492 DJ |
14844 | |
14845 | /* This two-pass algorithm for processing partial symbols has a | |
14846 | high cost in cache pressure. Thus, handle some simple cases | |
14847 | here which cover the majority of C partial symbols. DIEs | |
14848 | which neither have specification tags in them, nor could have | |
14849 | specification tags elsewhere pointing at them, can simply be | |
14850 | processed and discarded. | |
14851 | ||
14852 | This segment is also optional; scan_partial_symbols and | |
14853 | add_partial_symbol will handle these DIEs if we chain | |
14854 | them in normally. When compilers which do not emit large | |
14855 | quantities of duplicate debug information are more common, | |
14856 | this code can probably be removed. */ | |
14857 | ||
14858 | /* Any complete simple types at the top level (pretty much all | |
14859 | of them, for a language without namespaces), can be processed | |
14860 | directly. */ | |
14861 | if (parent_die == NULL | |
14862 | && part_die->has_specification == 0 | |
14863 | && part_die->is_declaration == 0 | |
d8228535 | 14864 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
14865 | || part_die->tag == DW_TAG_base_type |
14866 | || part_die->tag == DW_TAG_subrange_type)) | |
14867 | { | |
14868 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 14869 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 14870 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
14871 | &objfile->static_psymbols, |
14872 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 14873 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
14874 | continue; |
14875 | } | |
14876 | ||
d8228535 JK |
14877 | /* The exception for DW_TAG_typedef with has_children above is |
14878 | a workaround of GCC PR debug/47510. In the case of this complaint | |
14879 | type_name_no_tag_or_error will error on such types later. | |
14880 | ||
14881 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
14882 | it could not find the child DIEs referenced later, this is checked | |
14883 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
14884 | ||
14885 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
14886 | complaint (&symfile_complaints, | |
14887 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
14888 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14889 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 14890 | |
72bf9492 DJ |
14891 | /* If we're at the second level, and we're an enumerator, and |
14892 | our parent has no specification (meaning possibly lives in a | |
14893 | namespace elsewhere), then we can add the partial symbol now | |
14894 | instead of queueing it. */ | |
14895 | if (part_die->tag == DW_TAG_enumerator | |
14896 | && parent_die != NULL | |
14897 | && parent_die->die_parent == NULL | |
14898 | && parent_die->tag == DW_TAG_enumeration_type | |
14899 | && parent_die->has_specification == 0) | |
14900 | { | |
14901 | if (part_die->name == NULL) | |
3e43a32a MS |
14902 | complaint (&symfile_complaints, |
14903 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 14904 | else if (building_psymtab) |
04a679b8 | 14905 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 14906 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
14907 | (cu->language == language_cplus |
14908 | || cu->language == language_java) | |
bb5ed363 DE |
14909 | ? &objfile->global_psymbols |
14910 | : &objfile->static_psymbols, | |
14911 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 14912 | |
dee91e82 | 14913 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
14914 | continue; |
14915 | } | |
14916 | ||
14917 | /* We'll save this DIE so link it in. */ | |
14918 | part_die->die_parent = parent_die; | |
14919 | part_die->die_sibling = NULL; | |
14920 | part_die->die_child = NULL; | |
14921 | ||
14922 | if (last_die && last_die == parent_die) | |
14923 | last_die->die_child = part_die; | |
14924 | else if (last_die) | |
14925 | last_die->die_sibling = part_die; | |
14926 | ||
14927 | last_die = part_die; | |
14928 | ||
14929 | if (first_die == NULL) | |
14930 | first_die = part_die; | |
14931 | ||
14932 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
14933 | find interesting need to be in the hash table, because we | |
14934 | also have the parent/sibling/child chains; only those that we | |
14935 | might refer to by offset later during partial symbol reading. | |
14936 | ||
14937 | For now this means things that might have be the target of a | |
14938 | DW_AT_specification, DW_AT_abstract_origin, or | |
14939 | DW_AT_extension. DW_AT_extension will refer only to | |
14940 | namespaces; DW_AT_abstract_origin refers to functions (and | |
14941 | many things under the function DIE, but we do not recurse | |
14942 | into function DIEs during partial symbol reading) and | |
14943 | possibly variables as well; DW_AT_specification refers to | |
14944 | declarations. Declarations ought to have the DW_AT_declaration | |
14945 | flag. It happens that GCC forgets to put it in sometimes, but | |
14946 | only for functions, not for types. | |
14947 | ||
14948 | Adding more things than necessary to the hash table is harmless | |
14949 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
14950 | wasted time in find_partial_die, when we reread the compilation |
14951 | unit with load_all_dies set. */ | |
72bf9492 | 14952 | |
5afb4e99 | 14953 | if (load_all |
72929c62 | 14954 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 14955 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
14956 | || abbrev->tag == DW_TAG_variable |
14957 | || abbrev->tag == DW_TAG_namespace | |
14958 | || part_die->is_declaration) | |
14959 | { | |
14960 | void **slot; | |
14961 | ||
14962 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 14963 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
14964 | *slot = part_die; |
14965 | } | |
14966 | ||
14967 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14968 | sizeof (struct partial_die_info)); | |
14969 | ||
14970 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 14971 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
14972 | languages we have to, so that we can get at method physnames |
14973 | to infer fully qualified class names, for DW_AT_specification, | |
14974 | and for C++ template arguments. For C++, we also look one level | |
14975 | inside functions to find template arguments (if the name of the | |
14976 | function does not already contain the template arguments). | |
bc30ff58 JB |
14977 | |
14978 | For Ada, we need to scan the children of subprograms and lexical | |
14979 | blocks as well because Ada allows the definition of nested | |
14980 | entities that could be interesting for the debugger, such as | |
14981 | nested subprograms for instance. */ | |
72bf9492 | 14982 | if (last_die->has_children |
5afb4e99 DJ |
14983 | && (load_all |
14984 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 14985 | || last_die->tag == DW_TAG_module |
72bf9492 | 14986 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
14987 | || (cu->language == language_cplus |
14988 | && last_die->tag == DW_TAG_subprogram | |
14989 | && (last_die->name == NULL | |
14990 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
14991 | || (cu->language != language_c |
14992 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 14993 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 14994 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
14995 | || last_die->tag == DW_TAG_union_type)) |
14996 | || (cu->language == language_ada | |
14997 | && (last_die->tag == DW_TAG_subprogram | |
14998 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
14999 | { |
15000 | nesting_level++; | |
15001 | parent_die = last_die; | |
15002 | continue; | |
15003 | } | |
15004 | ||
15005 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15006 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15007 | |
15008 | /* Back to the top, do it again. */ | |
15009 | } | |
15010 | } | |
15011 | ||
c906108c SS |
15012 | /* Read a minimal amount of information into the minimal die structure. */ |
15013 | ||
d521ce57 | 15014 | static const gdb_byte * |
dee91e82 DE |
15015 | read_partial_die (const struct die_reader_specs *reader, |
15016 | struct partial_die_info *part_die, | |
15017 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15018 | const gdb_byte *info_ptr) |
c906108c | 15019 | { |
dee91e82 | 15020 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15021 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15022 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15023 | unsigned int i; |
c906108c | 15024 | struct attribute attr; |
c5aa993b | 15025 | int has_low_pc_attr = 0; |
c906108c | 15026 | int has_high_pc_attr = 0; |
91da1414 | 15027 | int high_pc_relative = 0; |
c906108c | 15028 | |
72bf9492 | 15029 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15030 | |
b64f50a1 | 15031 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15032 | |
15033 | info_ptr += abbrev_len; | |
15034 | ||
15035 | if (abbrev == NULL) | |
15036 | return info_ptr; | |
15037 | ||
c906108c SS |
15038 | part_die->tag = abbrev->tag; |
15039 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15040 | |
15041 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15042 | { | |
dee91e82 | 15043 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15044 | |
15045 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15046 | partial symbol table. */ |
c906108c SS |
15047 | switch (attr.name) |
15048 | { | |
15049 | case DW_AT_name: | |
71c25dea TT |
15050 | switch (part_die->tag) |
15051 | { | |
15052 | case DW_TAG_compile_unit: | |
95554aad | 15053 | case DW_TAG_partial_unit: |
348e048f | 15054 | case DW_TAG_type_unit: |
71c25dea TT |
15055 | /* Compilation units have a DW_AT_name that is a filename, not |
15056 | a source language identifier. */ | |
15057 | case DW_TAG_enumeration_type: | |
15058 | case DW_TAG_enumerator: | |
15059 | /* These tags always have simple identifiers already; no need | |
15060 | to canonicalize them. */ | |
15061 | part_die->name = DW_STRING (&attr); | |
15062 | break; | |
15063 | default: | |
15064 | part_die->name | |
15065 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 15066 | &objfile->objfile_obstack); |
71c25dea TT |
15067 | break; |
15068 | } | |
c906108c | 15069 | break; |
31ef98ae | 15070 | case DW_AT_linkage_name: |
c906108c | 15071 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15072 | /* Note that both forms of linkage name might appear. We |
15073 | assume they will be the same, and we only store the last | |
15074 | one we see. */ | |
94af9270 KS |
15075 | if (cu->language == language_ada) |
15076 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15077 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15078 | break; |
15079 | case DW_AT_low_pc: | |
15080 | has_low_pc_attr = 1; | |
15081 | part_die->lowpc = DW_ADDR (&attr); | |
15082 | break; | |
15083 | case DW_AT_high_pc: | |
15084 | has_high_pc_attr = 1; | |
3019eac3 DE |
15085 | if (attr.form == DW_FORM_addr |
15086 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
15087 | part_die->highpc = DW_ADDR (&attr); |
15088 | else | |
15089 | { | |
15090 | high_pc_relative = 1; | |
15091 | part_die->highpc = DW_UNSND (&attr); | |
15092 | } | |
c906108c SS |
15093 | break; |
15094 | case DW_AT_location: | |
0963b4bd | 15095 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15096 | if (attr_form_is_block (&attr)) |
15097 | { | |
95554aad | 15098 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15099 | } |
3690dd37 | 15100 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15101 | { |
4d3c2250 | 15102 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15103 | } |
15104 | else | |
15105 | { | |
4d3c2250 KB |
15106 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15107 | "partial symbol information"); | |
8e19ed76 | 15108 | } |
c906108c | 15109 | break; |
c906108c SS |
15110 | case DW_AT_external: |
15111 | part_die->is_external = DW_UNSND (&attr); | |
15112 | break; | |
15113 | case DW_AT_declaration: | |
15114 | part_die->is_declaration = DW_UNSND (&attr); | |
15115 | break; | |
15116 | case DW_AT_type: | |
15117 | part_die->has_type = 1; | |
15118 | break; | |
15119 | case DW_AT_abstract_origin: | |
15120 | case DW_AT_specification: | |
72bf9492 DJ |
15121 | case DW_AT_extension: |
15122 | part_die->has_specification = 1; | |
c764a876 | 15123 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15124 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15125 | || cu->per_cu->is_dwz); | |
c906108c SS |
15126 | break; |
15127 | case DW_AT_sibling: | |
15128 | /* Ignore absolute siblings, they might point outside of | |
15129 | the current compile unit. */ | |
15130 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15131 | complaint (&symfile_complaints, |
15132 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15133 | else |
b64f50a1 | 15134 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 15135 | break; |
fa4028e9 JB |
15136 | case DW_AT_byte_size: |
15137 | part_die->has_byte_size = 1; | |
15138 | break; | |
68511cec CES |
15139 | case DW_AT_calling_convention: |
15140 | /* DWARF doesn't provide a way to identify a program's source-level | |
15141 | entry point. DW_AT_calling_convention attributes are only meant | |
15142 | to describe functions' calling conventions. | |
15143 | ||
15144 | However, because it's a necessary piece of information in | |
15145 | Fortran, and because DW_CC_program is the only piece of debugging | |
15146 | information whose definition refers to a 'main program' at all, | |
15147 | several compilers have begun marking Fortran main programs with | |
15148 | DW_CC_program --- even when those functions use the standard | |
15149 | calling conventions. | |
15150 | ||
15151 | So until DWARF specifies a way to provide this information and | |
15152 | compilers pick up the new representation, we'll support this | |
15153 | practice. */ | |
15154 | if (DW_UNSND (&attr) == DW_CC_program | |
15155 | && cu->language == language_fortran) | |
01f8c46d JK |
15156 | { |
15157 | set_main_name (part_die->name); | |
15158 | ||
15159 | /* As this DIE has a static linkage the name would be difficult | |
15160 | to look up later. */ | |
15161 | language_of_main = language_fortran; | |
15162 | } | |
68511cec | 15163 | break; |
481860b3 GB |
15164 | case DW_AT_inline: |
15165 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15166 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15167 | part_die->may_be_inlined = 1; | |
15168 | break; | |
95554aad TT |
15169 | |
15170 | case DW_AT_import: | |
15171 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15172 | { |
15173 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15174 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15175 | || cu->per_cu->is_dwz); | |
15176 | } | |
95554aad TT |
15177 | break; |
15178 | ||
c906108c SS |
15179 | default: |
15180 | break; | |
15181 | } | |
15182 | } | |
15183 | ||
91da1414 MW |
15184 | if (high_pc_relative) |
15185 | part_die->highpc += part_die->lowpc; | |
15186 | ||
9373cf26 JK |
15187 | if (has_low_pc_attr && has_high_pc_attr) |
15188 | { | |
15189 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15190 | eliminate duplicate copies of functions and vtables and such. | |
15191 | The linker will arbitrarily choose one and discard the others. | |
15192 | The AT_*_pc values for such functions refer to local labels in | |
15193 | these sections. If the section from that file was discarded, the | |
15194 | labels are not in the output, so the relocs get a value of 0. | |
15195 | If this is a discarded function, mark the pc bounds as invalid, | |
15196 | so that GDB will ignore it. */ | |
15197 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15198 | { | |
bb5ed363 | 15199 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15200 | |
15201 | complaint (&symfile_complaints, | |
15202 | _("DW_AT_low_pc %s is zero " | |
15203 | "for DIE at 0x%x [in module %s]"), | |
15204 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15205 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15206 | } |
15207 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15208 | else if (part_die->lowpc >= part_die->highpc) | |
15209 | { | |
bb5ed363 | 15210 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15211 | |
15212 | complaint (&symfile_complaints, | |
15213 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15214 | "for DIE at 0x%x [in module %s]"), | |
15215 | paddress (gdbarch, part_die->lowpc), | |
15216 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15217 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15218 | } |
15219 | else | |
15220 | part_die->has_pc_info = 1; | |
15221 | } | |
85cbf3d3 | 15222 | |
c906108c SS |
15223 | return info_ptr; |
15224 | } | |
15225 | ||
72bf9492 DJ |
15226 | /* Find a cached partial DIE at OFFSET in CU. */ |
15227 | ||
15228 | static struct partial_die_info * | |
b64f50a1 | 15229 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15230 | { |
15231 | struct partial_die_info *lookup_die = NULL; | |
15232 | struct partial_die_info part_die; | |
15233 | ||
15234 | part_die.offset = offset; | |
b64f50a1 JK |
15235 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15236 | offset.sect_off); | |
72bf9492 | 15237 | |
72bf9492 DJ |
15238 | return lookup_die; |
15239 | } | |
15240 | ||
348e048f DE |
15241 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15242 | except in the case of .debug_types DIEs which do not reference | |
15243 | outside their CU (they do however referencing other types via | |
55f1336d | 15244 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15245 | |
15246 | static struct partial_die_info * | |
36586728 | 15247 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15248 | { |
bb5ed363 | 15249 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15250 | struct dwarf2_per_cu_data *per_cu = NULL; |
15251 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15252 | |
36586728 TT |
15253 | if (offset_in_dwz == cu->per_cu->is_dwz |
15254 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15255 | { |
15256 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15257 | if (pd != NULL) | |
15258 | return pd; | |
0d99eb77 DE |
15259 | /* We missed recording what we needed. |
15260 | Load all dies and try again. */ | |
15261 | per_cu = cu->per_cu; | |
5afb4e99 | 15262 | } |
0d99eb77 DE |
15263 | else |
15264 | { | |
15265 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 15266 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
15267 | { |
15268 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
15269 | " external reference to offset 0x%lx [in module %s].\n"), | |
15270 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
15271 | bfd_get_filename (objfile->obfd)); | |
15272 | } | |
36586728 TT |
15273 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
15274 | objfile); | |
72bf9492 | 15275 | |
0d99eb77 DE |
15276 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
15277 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 15278 | |
0d99eb77 DE |
15279 | per_cu->cu->last_used = 0; |
15280 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15281 | } | |
5afb4e99 | 15282 | |
dee91e82 DE |
15283 | /* If we didn't find it, and not all dies have been loaded, |
15284 | load them all and try again. */ | |
15285 | ||
5afb4e99 DJ |
15286 | if (pd == NULL && per_cu->load_all_dies == 0) |
15287 | { | |
5afb4e99 | 15288 | per_cu->load_all_dies = 1; |
fd820528 DE |
15289 | |
15290 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
15291 | THIS_CU->cu may already be in use. So we can't just free it and | |
15292 | replace its DIEs with the ones we read in. Instead, we leave those | |
15293 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
15294 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
15295 | set. */ | |
dee91e82 | 15296 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
15297 | |
15298 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15299 | } | |
15300 | ||
15301 | if (pd == NULL) | |
15302 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
15303 | _("could not find partial DIE 0x%x " |
15304 | "in cache [from module %s]\n"), | |
b64f50a1 | 15305 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 15306 | return pd; |
72bf9492 DJ |
15307 | } |
15308 | ||
abc72ce4 DE |
15309 | /* See if we can figure out if the class lives in a namespace. We do |
15310 | this by looking for a member function; its demangled name will | |
15311 | contain namespace info, if there is any. */ | |
15312 | ||
15313 | static void | |
15314 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
15315 | struct dwarf2_cu *cu) | |
15316 | { | |
15317 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
15318 | what template types look like, because the demangler | |
15319 | frequently doesn't give the same name as the debug info. We | |
15320 | could fix this by only using the demangled name to get the | |
15321 | prefix (but see comment in read_structure_type). */ | |
15322 | ||
15323 | struct partial_die_info *real_pdi; | |
15324 | struct partial_die_info *child_pdi; | |
15325 | ||
15326 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
15327 | we should not do this. We'll prepend the parent's fully qualified | |
15328 | name when we create the partial symbol. */ | |
15329 | ||
15330 | real_pdi = struct_pdi; | |
15331 | while (real_pdi->has_specification) | |
36586728 TT |
15332 | real_pdi = find_partial_die (real_pdi->spec_offset, |
15333 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
15334 | |
15335 | if (real_pdi->die_parent != NULL) | |
15336 | return; | |
15337 | ||
15338 | for (child_pdi = struct_pdi->die_child; | |
15339 | child_pdi != NULL; | |
15340 | child_pdi = child_pdi->die_sibling) | |
15341 | { | |
15342 | if (child_pdi->tag == DW_TAG_subprogram | |
15343 | && child_pdi->linkage_name != NULL) | |
15344 | { | |
15345 | char *actual_class_name | |
15346 | = language_class_name_from_physname (cu->language_defn, | |
15347 | child_pdi->linkage_name); | |
15348 | if (actual_class_name != NULL) | |
15349 | { | |
15350 | struct_pdi->name | |
10f0c4bb TT |
15351 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
15352 | actual_class_name, | |
15353 | strlen (actual_class_name)); | |
abc72ce4 DE |
15354 | xfree (actual_class_name); |
15355 | } | |
15356 | break; | |
15357 | } | |
15358 | } | |
15359 | } | |
15360 | ||
72bf9492 DJ |
15361 | /* Adjust PART_DIE before generating a symbol for it. This function |
15362 | may set the is_external flag or change the DIE's name. */ | |
15363 | ||
15364 | static void | |
15365 | fixup_partial_die (struct partial_die_info *part_die, | |
15366 | struct dwarf2_cu *cu) | |
15367 | { | |
abc72ce4 DE |
15368 | /* Once we've fixed up a die, there's no point in doing so again. |
15369 | This also avoids a memory leak if we were to call | |
15370 | guess_partial_die_structure_name multiple times. */ | |
15371 | if (part_die->fixup_called) | |
15372 | return; | |
15373 | ||
72bf9492 DJ |
15374 | /* If we found a reference attribute and the DIE has no name, try |
15375 | to find a name in the referred to DIE. */ | |
15376 | ||
15377 | if (part_die->name == NULL && part_die->has_specification) | |
15378 | { | |
15379 | struct partial_die_info *spec_die; | |
72bf9492 | 15380 | |
36586728 TT |
15381 | spec_die = find_partial_die (part_die->spec_offset, |
15382 | part_die->spec_is_dwz, cu); | |
72bf9492 | 15383 | |
10b3939b | 15384 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
15385 | |
15386 | if (spec_die->name) | |
15387 | { | |
15388 | part_die->name = spec_die->name; | |
15389 | ||
15390 | /* Copy DW_AT_external attribute if it is set. */ | |
15391 | if (spec_die->is_external) | |
15392 | part_die->is_external = spec_die->is_external; | |
15393 | } | |
15394 | } | |
15395 | ||
15396 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
15397 | |
15398 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 15399 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 15400 | |
abc72ce4 DE |
15401 | /* If there is no parent die to provide a namespace, and there are |
15402 | children, see if we can determine the namespace from their linkage | |
122d1940 | 15403 | name. */ |
abc72ce4 | 15404 | if (cu->language == language_cplus |
8b70b953 | 15405 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
15406 | && part_die->die_parent == NULL |
15407 | && part_die->has_children | |
15408 | && (part_die->tag == DW_TAG_class_type | |
15409 | || part_die->tag == DW_TAG_structure_type | |
15410 | || part_die->tag == DW_TAG_union_type)) | |
15411 | guess_partial_die_structure_name (part_die, cu); | |
15412 | ||
53832f31 TT |
15413 | /* GCC might emit a nameless struct or union that has a linkage |
15414 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15415 | if (part_die->name == NULL | |
96408a79 SA |
15416 | && (part_die->tag == DW_TAG_class_type |
15417 | || part_die->tag == DW_TAG_interface_type | |
15418 | || part_die->tag == DW_TAG_structure_type | |
15419 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
15420 | && part_die->linkage_name != NULL) |
15421 | { | |
15422 | char *demangled; | |
15423 | ||
8de20a37 | 15424 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
15425 | if (demangled) |
15426 | { | |
96408a79 SA |
15427 | const char *base; |
15428 | ||
15429 | /* Strip any leading namespaces/classes, keep only the base name. | |
15430 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
15431 | base = strrchr (demangled, ':'); | |
15432 | if (base && base > demangled && base[-1] == ':') | |
15433 | base++; | |
15434 | else | |
15435 | base = demangled; | |
15436 | ||
10f0c4bb TT |
15437 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
15438 | base, strlen (base)); | |
53832f31 TT |
15439 | xfree (demangled); |
15440 | } | |
15441 | } | |
15442 | ||
abc72ce4 | 15443 | part_die->fixup_called = 1; |
72bf9492 DJ |
15444 | } |
15445 | ||
a8329558 | 15446 | /* Read an attribute value described by an attribute form. */ |
c906108c | 15447 | |
d521ce57 | 15448 | static const gdb_byte * |
dee91e82 DE |
15449 | read_attribute_value (const struct die_reader_specs *reader, |
15450 | struct attribute *attr, unsigned form, | |
d521ce57 | 15451 | const gdb_byte *info_ptr) |
c906108c | 15452 | { |
dee91e82 DE |
15453 | struct dwarf2_cu *cu = reader->cu; |
15454 | bfd *abfd = reader->abfd; | |
e7c27a73 | 15455 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15456 | unsigned int bytes_read; |
15457 | struct dwarf_block *blk; | |
15458 | ||
a8329558 KW |
15459 | attr->form = form; |
15460 | switch (form) | |
c906108c | 15461 | { |
c906108c | 15462 | case DW_FORM_ref_addr: |
ae411497 | 15463 | if (cu->header.version == 2) |
4568ecf9 | 15464 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 15465 | else |
4568ecf9 DE |
15466 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
15467 | &cu->header, &bytes_read); | |
ae411497 TT |
15468 | info_ptr += bytes_read; |
15469 | break; | |
36586728 TT |
15470 | case DW_FORM_GNU_ref_alt: |
15471 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15472 | info_ptr += bytes_read; | |
15473 | break; | |
ae411497 | 15474 | case DW_FORM_addr: |
e7c27a73 | 15475 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 15476 | info_ptr += bytes_read; |
c906108c SS |
15477 | break; |
15478 | case DW_FORM_block2: | |
7b5a2f43 | 15479 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15480 | blk->size = read_2_bytes (abfd, info_ptr); |
15481 | info_ptr += 2; | |
15482 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15483 | info_ptr += blk->size; | |
15484 | DW_BLOCK (attr) = blk; | |
15485 | break; | |
15486 | case DW_FORM_block4: | |
7b5a2f43 | 15487 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15488 | blk->size = read_4_bytes (abfd, info_ptr); |
15489 | info_ptr += 4; | |
15490 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15491 | info_ptr += blk->size; | |
15492 | DW_BLOCK (attr) = blk; | |
15493 | break; | |
15494 | case DW_FORM_data2: | |
15495 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
15496 | info_ptr += 2; | |
15497 | break; | |
15498 | case DW_FORM_data4: | |
15499 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
15500 | info_ptr += 4; | |
15501 | break; | |
15502 | case DW_FORM_data8: | |
15503 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
15504 | info_ptr += 8; | |
15505 | break; | |
2dc7f7b3 TT |
15506 | case DW_FORM_sec_offset: |
15507 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15508 | info_ptr += bytes_read; | |
15509 | break; | |
c906108c | 15510 | case DW_FORM_string: |
9b1c24c8 | 15511 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 15512 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
15513 | info_ptr += bytes_read; |
15514 | break; | |
4bdf3d34 | 15515 | case DW_FORM_strp: |
36586728 TT |
15516 | if (!cu->per_cu->is_dwz) |
15517 | { | |
15518 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
15519 | &bytes_read); | |
15520 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15521 | info_ptr += bytes_read; | |
15522 | break; | |
15523 | } | |
15524 | /* FALLTHROUGH */ | |
15525 | case DW_FORM_GNU_strp_alt: | |
15526 | { | |
15527 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15528 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
15529 | &bytes_read); | |
15530 | ||
15531 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
15532 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15533 | info_ptr += bytes_read; | |
15534 | } | |
4bdf3d34 | 15535 | break; |
2dc7f7b3 | 15536 | case DW_FORM_exprloc: |
c906108c | 15537 | case DW_FORM_block: |
7b5a2f43 | 15538 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15539 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15540 | info_ptr += bytes_read; | |
15541 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15542 | info_ptr += blk->size; | |
15543 | DW_BLOCK (attr) = blk; | |
15544 | break; | |
15545 | case DW_FORM_block1: | |
7b5a2f43 | 15546 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15547 | blk->size = read_1_byte (abfd, info_ptr); |
15548 | info_ptr += 1; | |
15549 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15550 | info_ptr += blk->size; | |
15551 | DW_BLOCK (attr) = blk; | |
15552 | break; | |
15553 | case DW_FORM_data1: | |
15554 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15555 | info_ptr += 1; | |
15556 | break; | |
15557 | case DW_FORM_flag: | |
15558 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15559 | info_ptr += 1; | |
15560 | break; | |
2dc7f7b3 TT |
15561 | case DW_FORM_flag_present: |
15562 | DW_UNSND (attr) = 1; | |
15563 | break; | |
c906108c SS |
15564 | case DW_FORM_sdata: |
15565 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
15566 | info_ptr += bytes_read; | |
15567 | break; | |
15568 | case DW_FORM_udata: | |
15569 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15570 | info_ptr += bytes_read; | |
15571 | break; | |
15572 | case DW_FORM_ref1: | |
4568ecf9 DE |
15573 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15574 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
15575 | info_ptr += 1; |
15576 | break; | |
15577 | case DW_FORM_ref2: | |
4568ecf9 DE |
15578 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15579 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
15580 | info_ptr += 2; |
15581 | break; | |
15582 | case DW_FORM_ref4: | |
4568ecf9 DE |
15583 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15584 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
15585 | info_ptr += 4; |
15586 | break; | |
613e1657 | 15587 | case DW_FORM_ref8: |
4568ecf9 DE |
15588 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15589 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
15590 | info_ptr += 8; |
15591 | break; | |
55f1336d | 15592 | case DW_FORM_ref_sig8: |
ac9ec31b | 15593 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
15594 | info_ptr += 8; |
15595 | break; | |
c906108c | 15596 | case DW_FORM_ref_udata: |
4568ecf9 DE |
15597 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15598 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
15599 | info_ptr += bytes_read; |
15600 | break; | |
c906108c | 15601 | case DW_FORM_indirect: |
a8329558 KW |
15602 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15603 | info_ptr += bytes_read; | |
dee91e82 | 15604 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 15605 | break; |
3019eac3 DE |
15606 | case DW_FORM_GNU_addr_index: |
15607 | if (reader->dwo_file == NULL) | |
15608 | { | |
15609 | /* For now flag a hard error. | |
15610 | Later we can turn this into a complaint. */ | |
15611 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15612 | dwarf_form_name (form), | |
15613 | bfd_get_filename (abfd)); | |
15614 | } | |
15615 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
15616 | info_ptr += bytes_read; | |
15617 | break; | |
15618 | case DW_FORM_GNU_str_index: | |
15619 | if (reader->dwo_file == NULL) | |
15620 | { | |
15621 | /* For now flag a hard error. | |
15622 | Later we can turn this into a complaint if warranted. */ | |
15623 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15624 | dwarf_form_name (form), | |
15625 | bfd_get_filename (abfd)); | |
15626 | } | |
15627 | { | |
15628 | ULONGEST str_index = | |
15629 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15630 | ||
15631 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
15632 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15633 | info_ptr += bytes_read; | |
15634 | } | |
15635 | break; | |
c906108c | 15636 | default: |
8a3fe4f8 | 15637 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
15638 | dwarf_form_name (form), |
15639 | bfd_get_filename (abfd)); | |
c906108c | 15640 | } |
28e94949 | 15641 | |
36586728 | 15642 | /* Super hack. */ |
7771576e | 15643 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
15644 | attr->form = DW_FORM_GNU_ref_alt; |
15645 | ||
28e94949 JB |
15646 | /* We have seen instances where the compiler tried to emit a byte |
15647 | size attribute of -1 which ended up being encoded as an unsigned | |
15648 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
15649 | an object of this size seems pretty unlikely so we can relatively | |
15650 | safely treat these cases as if the size attribute was invalid and | |
15651 | treat them as zero by default. */ | |
15652 | if (attr->name == DW_AT_byte_size | |
15653 | && form == DW_FORM_data4 | |
15654 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
15655 | { |
15656 | complaint | |
15657 | (&symfile_complaints, | |
43bbcdc2 PH |
15658 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
15659 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
15660 | DW_UNSND (attr) = 0; |
15661 | } | |
28e94949 | 15662 | |
c906108c SS |
15663 | return info_ptr; |
15664 | } | |
15665 | ||
a8329558 KW |
15666 | /* Read an attribute described by an abbreviated attribute. */ |
15667 | ||
d521ce57 | 15668 | static const gdb_byte * |
dee91e82 DE |
15669 | read_attribute (const struct die_reader_specs *reader, |
15670 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 15671 | const gdb_byte *info_ptr) |
a8329558 KW |
15672 | { |
15673 | attr->name = abbrev->name; | |
dee91e82 | 15674 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
15675 | } |
15676 | ||
0963b4bd | 15677 | /* Read dwarf information from a buffer. */ |
c906108c SS |
15678 | |
15679 | static unsigned int | |
a1855c1d | 15680 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15681 | { |
fe1b8b76 | 15682 | return bfd_get_8 (abfd, buf); |
c906108c SS |
15683 | } |
15684 | ||
15685 | static int | |
a1855c1d | 15686 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15687 | { |
fe1b8b76 | 15688 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
15689 | } |
15690 | ||
15691 | static unsigned int | |
a1855c1d | 15692 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15693 | { |
fe1b8b76 | 15694 | return bfd_get_16 (abfd, buf); |
c906108c SS |
15695 | } |
15696 | ||
21ae7a4d | 15697 | static int |
a1855c1d | 15698 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15699 | { |
15700 | return bfd_get_signed_16 (abfd, buf); | |
15701 | } | |
15702 | ||
c906108c | 15703 | static unsigned int |
a1855c1d | 15704 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15705 | { |
fe1b8b76 | 15706 | return bfd_get_32 (abfd, buf); |
c906108c SS |
15707 | } |
15708 | ||
21ae7a4d | 15709 | static int |
a1855c1d | 15710 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15711 | { |
15712 | return bfd_get_signed_32 (abfd, buf); | |
15713 | } | |
15714 | ||
93311388 | 15715 | static ULONGEST |
a1855c1d | 15716 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15717 | { |
fe1b8b76 | 15718 | return bfd_get_64 (abfd, buf); |
c906108c SS |
15719 | } |
15720 | ||
15721 | static CORE_ADDR | |
d521ce57 | 15722 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 15723 | unsigned int *bytes_read) |
c906108c | 15724 | { |
e7c27a73 | 15725 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15726 | CORE_ADDR retval = 0; |
15727 | ||
107d2387 | 15728 | if (cu_header->signed_addr_p) |
c906108c | 15729 | { |
107d2387 AC |
15730 | switch (cu_header->addr_size) |
15731 | { | |
15732 | case 2: | |
fe1b8b76 | 15733 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
15734 | break; |
15735 | case 4: | |
fe1b8b76 | 15736 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
15737 | break; |
15738 | case 8: | |
fe1b8b76 | 15739 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
15740 | break; |
15741 | default: | |
8e65ff28 | 15742 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 15743 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 15744 | bfd_get_filename (abfd)); |
107d2387 AC |
15745 | } |
15746 | } | |
15747 | else | |
15748 | { | |
15749 | switch (cu_header->addr_size) | |
15750 | { | |
15751 | case 2: | |
fe1b8b76 | 15752 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
15753 | break; |
15754 | case 4: | |
fe1b8b76 | 15755 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
15756 | break; |
15757 | case 8: | |
fe1b8b76 | 15758 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
15759 | break; |
15760 | default: | |
8e65ff28 | 15761 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
15762 | _("read_address: bad switch, " |
15763 | "unsigned [in module %s]"), | |
659b0389 | 15764 | bfd_get_filename (abfd)); |
107d2387 | 15765 | } |
c906108c | 15766 | } |
64367e0a | 15767 | |
107d2387 AC |
15768 | *bytes_read = cu_header->addr_size; |
15769 | return retval; | |
c906108c SS |
15770 | } |
15771 | ||
f7ef9339 | 15772 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
15773 | specification allows the initial length to take up either 4 bytes |
15774 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
15775 | bytes describe the length and all offsets will be 8 bytes in length | |
15776 | instead of 4. | |
15777 | ||
f7ef9339 KB |
15778 | An older, non-standard 64-bit format is also handled by this |
15779 | function. The older format in question stores the initial length | |
15780 | as an 8-byte quantity without an escape value. Lengths greater | |
15781 | than 2^32 aren't very common which means that the initial 4 bytes | |
15782 | is almost always zero. Since a length value of zero doesn't make | |
15783 | sense for the 32-bit format, this initial zero can be considered to | |
15784 | be an escape value which indicates the presence of the older 64-bit | |
15785 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
15786 | greater than 4GB. If it becomes necessary to handle lengths |
15787 | somewhat larger than 4GB, we could allow other small values (such | |
15788 | as the non-sensical values of 1, 2, and 3) to also be used as | |
15789 | escape values indicating the presence of the old format. | |
f7ef9339 | 15790 | |
917c78fc MK |
15791 | The value returned via bytes_read should be used to increment the |
15792 | relevant pointer after calling read_initial_length(). | |
c764a876 | 15793 | |
613e1657 KB |
15794 | [ Note: read_initial_length() and read_offset() are based on the |
15795 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 15796 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
15797 | from: |
15798 | ||
f7ef9339 | 15799 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 15800 | |
613e1657 KB |
15801 | This document is only a draft and is subject to change. (So beware.) |
15802 | ||
f7ef9339 | 15803 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
15804 | determined empirically by examining 64-bit ELF files produced by |
15805 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
15806 | |
15807 | - Kevin, July 16, 2002 | |
613e1657 KB |
15808 | ] */ |
15809 | ||
15810 | static LONGEST | |
d521ce57 | 15811 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 15812 | { |
fe1b8b76 | 15813 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 15814 | |
dd373385 | 15815 | if (length == 0xffffffff) |
613e1657 | 15816 | { |
fe1b8b76 | 15817 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 15818 | *bytes_read = 12; |
613e1657 | 15819 | } |
dd373385 | 15820 | else if (length == 0) |
f7ef9339 | 15821 | { |
dd373385 | 15822 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 15823 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 15824 | *bytes_read = 8; |
f7ef9339 | 15825 | } |
613e1657 KB |
15826 | else |
15827 | { | |
15828 | *bytes_read = 4; | |
613e1657 KB |
15829 | } |
15830 | ||
c764a876 DE |
15831 | return length; |
15832 | } | |
dd373385 | 15833 | |
c764a876 DE |
15834 | /* Cover function for read_initial_length. |
15835 | Returns the length of the object at BUF, and stores the size of the | |
15836 | initial length in *BYTES_READ and stores the size that offsets will be in | |
15837 | *OFFSET_SIZE. | |
15838 | If the initial length size is not equivalent to that specified in | |
15839 | CU_HEADER then issue a complaint. | |
15840 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 15841 | |
c764a876 | 15842 | static LONGEST |
d521ce57 | 15843 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
15844 | const struct comp_unit_head *cu_header, |
15845 | unsigned int *bytes_read, | |
15846 | unsigned int *offset_size) | |
15847 | { | |
15848 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
15849 | ||
15850 | gdb_assert (cu_header->initial_length_size == 4 | |
15851 | || cu_header->initial_length_size == 8 | |
15852 | || cu_header->initial_length_size == 12); | |
15853 | ||
15854 | if (cu_header->initial_length_size != *bytes_read) | |
15855 | complaint (&symfile_complaints, | |
15856 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 15857 | |
c764a876 | 15858 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 15859 | return length; |
613e1657 KB |
15860 | } |
15861 | ||
15862 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 15863 | given by cu_header->offset_size. */ |
613e1657 KB |
15864 | |
15865 | static LONGEST | |
d521ce57 TT |
15866 | read_offset (bfd *abfd, const gdb_byte *buf, |
15867 | const struct comp_unit_head *cu_header, | |
891d2f0b | 15868 | unsigned int *bytes_read) |
c764a876 DE |
15869 | { |
15870 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 15871 | |
c764a876 DE |
15872 | *bytes_read = cu_header->offset_size; |
15873 | return offset; | |
15874 | } | |
15875 | ||
15876 | /* Read an offset from the data stream. */ | |
15877 | ||
15878 | static LONGEST | |
d521ce57 | 15879 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
15880 | { |
15881 | LONGEST retval = 0; | |
15882 | ||
c764a876 | 15883 | switch (offset_size) |
613e1657 KB |
15884 | { |
15885 | case 4: | |
fe1b8b76 | 15886 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
15887 | break; |
15888 | case 8: | |
fe1b8b76 | 15889 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
15890 | break; |
15891 | default: | |
8e65ff28 | 15892 | internal_error (__FILE__, __LINE__, |
c764a876 | 15893 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 15894 | bfd_get_filename (abfd)); |
613e1657 KB |
15895 | } |
15896 | ||
917c78fc | 15897 | return retval; |
613e1657 KB |
15898 | } |
15899 | ||
d521ce57 TT |
15900 | static const gdb_byte * |
15901 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
15902 | { |
15903 | /* If the size of a host char is 8 bits, we can return a pointer | |
15904 | to the buffer, otherwise we have to copy the data to a buffer | |
15905 | allocated on the temporary obstack. */ | |
4bdf3d34 | 15906 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 15907 | return buf; |
c906108c SS |
15908 | } |
15909 | ||
d521ce57 TT |
15910 | static const char * |
15911 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
15912 | unsigned int *bytes_read_ptr) | |
c906108c SS |
15913 | { |
15914 | /* If the size of a host char is 8 bits, we can return a pointer | |
15915 | to the string, otherwise we have to copy the string to a buffer | |
15916 | allocated on the temporary obstack. */ | |
4bdf3d34 | 15917 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
15918 | if (*buf == '\0') |
15919 | { | |
15920 | *bytes_read_ptr = 1; | |
15921 | return NULL; | |
15922 | } | |
d521ce57 TT |
15923 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
15924 | return (const char *) buf; | |
4bdf3d34 JJ |
15925 | } |
15926 | ||
d521ce57 | 15927 | static const char * |
cf2c3c16 | 15928 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 15929 | { |
be391dca | 15930 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 15931 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
15932 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
15933 | bfd_get_filename (abfd)); | |
dce234bc | 15934 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
15935 | error (_("DW_FORM_strp pointing outside of " |
15936 | ".debug_str section [in module %s]"), | |
15937 | bfd_get_filename (abfd)); | |
4bdf3d34 | 15938 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 15939 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 15940 | return NULL; |
d521ce57 | 15941 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
15942 | } |
15943 | ||
36586728 TT |
15944 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
15945 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
15946 | the string consists of a single NUL byte, return NULL; otherwise | |
15947 | return a pointer to the string. */ | |
15948 | ||
d521ce57 | 15949 | static const char * |
36586728 TT |
15950 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
15951 | { | |
15952 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
15953 | ||
15954 | if (dwz->str.buffer == NULL) | |
15955 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
15956 | "section [in module %s]"), | |
15957 | bfd_get_filename (dwz->dwz_bfd)); | |
15958 | if (str_offset >= dwz->str.size) | |
15959 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
15960 | ".debug_str section [in module %s]"), | |
15961 | bfd_get_filename (dwz->dwz_bfd)); | |
15962 | gdb_assert (HOST_CHAR_BIT == 8); | |
15963 | if (dwz->str.buffer[str_offset] == '\0') | |
15964 | return NULL; | |
d521ce57 | 15965 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
15966 | } |
15967 | ||
d521ce57 TT |
15968 | static const char * |
15969 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
15970 | const struct comp_unit_head *cu_header, |
15971 | unsigned int *bytes_read_ptr) | |
15972 | { | |
15973 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
15974 | ||
15975 | return read_indirect_string_at_offset (abfd, str_offset); | |
15976 | } | |
15977 | ||
12df843f | 15978 | static ULONGEST |
d521ce57 TT |
15979 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
15980 | unsigned int *bytes_read_ptr) | |
c906108c | 15981 | { |
12df843f | 15982 | ULONGEST result; |
ce5d95e1 | 15983 | unsigned int num_read; |
c906108c SS |
15984 | int i, shift; |
15985 | unsigned char byte; | |
15986 | ||
15987 | result = 0; | |
15988 | shift = 0; | |
15989 | num_read = 0; | |
15990 | i = 0; | |
15991 | while (1) | |
15992 | { | |
fe1b8b76 | 15993 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
15994 | buf++; |
15995 | num_read++; | |
12df843f | 15996 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
15997 | if ((byte & 128) == 0) |
15998 | { | |
15999 | break; | |
16000 | } | |
16001 | shift += 7; | |
16002 | } | |
16003 | *bytes_read_ptr = num_read; | |
16004 | return result; | |
16005 | } | |
16006 | ||
12df843f | 16007 | static LONGEST |
d521ce57 TT |
16008 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16009 | unsigned int *bytes_read_ptr) | |
c906108c | 16010 | { |
12df843f | 16011 | LONGEST result; |
77e0b926 | 16012 | int i, shift, num_read; |
c906108c SS |
16013 | unsigned char byte; |
16014 | ||
16015 | result = 0; | |
16016 | shift = 0; | |
c906108c SS |
16017 | num_read = 0; |
16018 | i = 0; | |
16019 | while (1) | |
16020 | { | |
fe1b8b76 | 16021 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16022 | buf++; |
16023 | num_read++; | |
12df843f | 16024 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16025 | shift += 7; |
16026 | if ((byte & 128) == 0) | |
16027 | { | |
16028 | break; | |
16029 | } | |
16030 | } | |
77e0b926 | 16031 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16032 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16033 | *bytes_read_ptr = num_read; |
16034 | return result; | |
16035 | } | |
16036 | ||
3019eac3 DE |
16037 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16038 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16039 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16040 | ||
16041 | static CORE_ADDR | |
16042 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16043 | { | |
16044 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16045 | bfd *abfd = objfile->obfd; | |
16046 | const gdb_byte *info_ptr; | |
16047 | ||
16048 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16049 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16050 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16051 | objfile_name (objfile)); |
3019eac3 DE |
16052 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16053 | error (_("DW_FORM_addr_index pointing outside of " | |
16054 | ".debug_addr section [in module %s]"), | |
4262abfb | 16055 | objfile_name (objfile)); |
3019eac3 DE |
16056 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16057 | + addr_base + addr_index * addr_size); | |
16058 | if (addr_size == 4) | |
16059 | return bfd_get_32 (abfd, info_ptr); | |
16060 | else | |
16061 | return bfd_get_64 (abfd, info_ptr); | |
16062 | } | |
16063 | ||
16064 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16065 | ||
16066 | static CORE_ADDR | |
16067 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16068 | { | |
16069 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16070 | } | |
16071 | ||
16072 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16073 | ||
16074 | static CORE_ADDR | |
d521ce57 | 16075 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16076 | unsigned int *bytes_read) |
16077 | { | |
16078 | bfd *abfd = cu->objfile->obfd; | |
16079 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16080 | ||
16081 | return read_addr_index (cu, addr_index); | |
16082 | } | |
16083 | ||
16084 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16085 | back to dwarf2_read_addr_index. */ | |
16086 | ||
16087 | struct dwarf2_read_addr_index_data | |
16088 | { | |
16089 | ULONGEST addr_base; | |
16090 | int addr_size; | |
16091 | }; | |
16092 | ||
16093 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16094 | ||
16095 | static void | |
16096 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16097 | const gdb_byte *info_ptr, |
3019eac3 DE |
16098 | struct die_info *comp_unit_die, |
16099 | int has_children, | |
16100 | void *data) | |
16101 | { | |
16102 | struct dwarf2_cu *cu = reader->cu; | |
16103 | struct dwarf2_read_addr_index_data *aidata = | |
16104 | (struct dwarf2_read_addr_index_data *) data; | |
16105 | ||
16106 | aidata->addr_base = cu->addr_base; | |
16107 | aidata->addr_size = cu->header.addr_size; | |
16108 | } | |
16109 | ||
16110 | /* Given an index in .debug_addr, fetch the value. | |
16111 | NOTE: This can be called during dwarf expression evaluation, | |
16112 | long after the debug information has been read, and thus per_cu->cu | |
16113 | may no longer exist. */ | |
16114 | ||
16115 | CORE_ADDR | |
16116 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16117 | unsigned int addr_index) | |
16118 | { | |
16119 | struct objfile *objfile = per_cu->objfile; | |
16120 | struct dwarf2_cu *cu = per_cu->cu; | |
16121 | ULONGEST addr_base; | |
16122 | int addr_size; | |
16123 | ||
16124 | /* This is intended to be called from outside this file. */ | |
16125 | dw2_setup (objfile); | |
16126 | ||
16127 | /* We need addr_base and addr_size. | |
16128 | If we don't have PER_CU->cu, we have to get it. | |
16129 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16130 | which at this point doesn't seem justified: it's not clear how frequently | |
16131 | it would get used and it would increase the size of every PER_CU. | |
16132 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16133 | so we're not in uncharted territory here. | |
16134 | Alas we need to be a bit more complicated as addr_base is contained | |
16135 | in the DIE. | |
16136 | ||
16137 | We don't need to read the entire CU(/TU). | |
16138 | We just need the header and top level die. | |
a1b64ce1 | 16139 | |
3019eac3 | 16140 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16141 | For now we skip this optimization. */ |
3019eac3 DE |
16142 | |
16143 | if (cu != NULL) | |
16144 | { | |
16145 | addr_base = cu->addr_base; | |
16146 | addr_size = cu->header.addr_size; | |
16147 | } | |
16148 | else | |
16149 | { | |
16150 | struct dwarf2_read_addr_index_data aidata; | |
16151 | ||
a1b64ce1 DE |
16152 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16153 | we need addr_base. */ | |
16154 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16155 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16156 | addr_base = aidata.addr_base; |
16157 | addr_size = aidata.addr_size; | |
16158 | } | |
16159 | ||
16160 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16161 | } | |
16162 | ||
57d63ce2 DE |
16163 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16164 | This is only used by the Fission support. */ | |
3019eac3 | 16165 | |
d521ce57 | 16166 | static const char * |
3019eac3 DE |
16167 | read_str_index (const struct die_reader_specs *reader, |
16168 | struct dwarf2_cu *cu, ULONGEST str_index) | |
16169 | { | |
16170 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4262abfb | 16171 | const char *dwo_name = objfile_name (objfile); |
3019eac3 | 16172 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
16173 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16174 | struct dwarf2_section_info *str_offsets_section = | |
16175 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16176 | const gdb_byte *info_ptr; |
3019eac3 | 16177 | ULONGEST str_offset; |
57d63ce2 | 16178 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16179 | |
73869dc2 DE |
16180 | dwarf2_read_section (objfile, str_section); |
16181 | dwarf2_read_section (objfile, str_offsets_section); | |
16182 | if (str_section->buffer == NULL) | |
57d63ce2 | 16183 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16184 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16185 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16186 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16187 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16188 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16189 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16190 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16191 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16192 | " section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16193 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16194 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16195 | + str_index * cu->header.offset_size); |
16196 | if (cu->header.offset_size == 4) | |
16197 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16198 | else | |
16199 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16200 | if (str_offset >= str_section->size) |
57d63ce2 | 16201 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16202 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16203 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16204 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16205 | } |
16206 | ||
3019eac3 DE |
16207 | /* Return the length of an LEB128 number in BUF. */ |
16208 | ||
16209 | static int | |
16210 | leb128_size (const gdb_byte *buf) | |
16211 | { | |
16212 | const gdb_byte *begin = buf; | |
16213 | gdb_byte byte; | |
16214 | ||
16215 | while (1) | |
16216 | { | |
16217 | byte = *buf++; | |
16218 | if ((byte & 128) == 0) | |
16219 | return buf - begin; | |
16220 | } | |
16221 | } | |
16222 | ||
c906108c | 16223 | static void |
e142c38c | 16224 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16225 | { |
16226 | switch (lang) | |
16227 | { | |
16228 | case DW_LANG_C89: | |
76bee0cc | 16229 | case DW_LANG_C99: |
c906108c | 16230 | case DW_LANG_C: |
d1be3247 | 16231 | case DW_LANG_UPC: |
e142c38c | 16232 | cu->language = language_c; |
c906108c SS |
16233 | break; |
16234 | case DW_LANG_C_plus_plus: | |
e142c38c | 16235 | cu->language = language_cplus; |
c906108c | 16236 | break; |
6aecb9c2 JB |
16237 | case DW_LANG_D: |
16238 | cu->language = language_d; | |
16239 | break; | |
c906108c SS |
16240 | case DW_LANG_Fortran77: |
16241 | case DW_LANG_Fortran90: | |
b21b22e0 | 16242 | case DW_LANG_Fortran95: |
e142c38c | 16243 | cu->language = language_fortran; |
c906108c | 16244 | break; |
a766d390 DE |
16245 | case DW_LANG_Go: |
16246 | cu->language = language_go; | |
16247 | break; | |
c906108c | 16248 | case DW_LANG_Mips_Assembler: |
e142c38c | 16249 | cu->language = language_asm; |
c906108c | 16250 | break; |
bebd888e | 16251 | case DW_LANG_Java: |
e142c38c | 16252 | cu->language = language_java; |
bebd888e | 16253 | break; |
c906108c | 16254 | case DW_LANG_Ada83: |
8aaf0b47 | 16255 | case DW_LANG_Ada95: |
bc5f45f8 JB |
16256 | cu->language = language_ada; |
16257 | break; | |
72019c9c GM |
16258 | case DW_LANG_Modula2: |
16259 | cu->language = language_m2; | |
16260 | break; | |
fe8e67fd PM |
16261 | case DW_LANG_Pascal83: |
16262 | cu->language = language_pascal; | |
16263 | break; | |
22566fbd DJ |
16264 | case DW_LANG_ObjC: |
16265 | cu->language = language_objc; | |
16266 | break; | |
c906108c SS |
16267 | case DW_LANG_Cobol74: |
16268 | case DW_LANG_Cobol85: | |
c906108c | 16269 | default: |
e142c38c | 16270 | cu->language = language_minimal; |
c906108c SS |
16271 | break; |
16272 | } | |
e142c38c | 16273 | cu->language_defn = language_def (cu->language); |
c906108c SS |
16274 | } |
16275 | ||
16276 | /* Return the named attribute or NULL if not there. */ | |
16277 | ||
16278 | static struct attribute * | |
e142c38c | 16279 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 16280 | { |
a48e046c | 16281 | for (;;) |
c906108c | 16282 | { |
a48e046c TT |
16283 | unsigned int i; |
16284 | struct attribute *spec = NULL; | |
16285 | ||
16286 | for (i = 0; i < die->num_attrs; ++i) | |
16287 | { | |
16288 | if (die->attrs[i].name == name) | |
16289 | return &die->attrs[i]; | |
16290 | if (die->attrs[i].name == DW_AT_specification | |
16291 | || die->attrs[i].name == DW_AT_abstract_origin) | |
16292 | spec = &die->attrs[i]; | |
16293 | } | |
16294 | ||
16295 | if (!spec) | |
16296 | break; | |
c906108c | 16297 | |
f2f0e013 | 16298 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 16299 | } |
c5aa993b | 16300 | |
c906108c SS |
16301 | return NULL; |
16302 | } | |
16303 | ||
348e048f DE |
16304 | /* Return the named attribute or NULL if not there, |
16305 | but do not follow DW_AT_specification, etc. | |
16306 | This is for use in contexts where we're reading .debug_types dies. | |
16307 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
16308 | back up the chain, and we want to go down. */ | |
16309 | ||
16310 | static struct attribute * | |
45e58e77 | 16311 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
16312 | { |
16313 | unsigned int i; | |
16314 | ||
16315 | for (i = 0; i < die->num_attrs; ++i) | |
16316 | if (die->attrs[i].name == name) | |
16317 | return &die->attrs[i]; | |
16318 | ||
16319 | return NULL; | |
16320 | } | |
16321 | ||
05cf31d1 JB |
16322 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
16323 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 16324 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
16325 | |
16326 | static int | |
16327 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
16328 | { | |
16329 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16330 | ||
16331 | return (attr && DW_UNSND (attr)); | |
16332 | } | |
16333 | ||
3ca72b44 | 16334 | static int |
e142c38c | 16335 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 16336 | { |
05cf31d1 JB |
16337 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
16338 | which value is non-zero. However, we have to be careful with | |
16339 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
16340 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
16341 | end up accidently finding a declaration attribute that belongs | |
16342 | to a different DIE referenced by the specification attribute, | |
16343 | even though the given DIE does not have a declaration attribute. */ | |
16344 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
16345 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
16346 | } |
16347 | ||
63d06c5c | 16348 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 16349 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
16350 | containing the return value on output. If there is no |
16351 | specification, but there is an abstract origin, that is | |
16352 | returned. */ | |
63d06c5c DC |
16353 | |
16354 | static struct die_info * | |
f2f0e013 | 16355 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 16356 | { |
f2f0e013 DJ |
16357 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
16358 | *spec_cu); | |
63d06c5c | 16359 | |
edb3359d DJ |
16360 | if (spec_attr == NULL) |
16361 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
16362 | ||
63d06c5c DC |
16363 | if (spec_attr == NULL) |
16364 | return NULL; | |
16365 | else | |
f2f0e013 | 16366 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 16367 | } |
c906108c | 16368 | |
debd256d | 16369 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
16370 | refers to. |
16371 | NOTE: This is also used as a "cleanup" function. */ | |
16372 | ||
debd256d JB |
16373 | static void |
16374 | free_line_header (struct line_header *lh) | |
16375 | { | |
16376 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 16377 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
16378 | |
16379 | /* Remember that all the lh->file_names[i].name pointers are | |
16380 | pointers into debug_line_buffer, and don't need to be freed. */ | |
16381 | if (lh->file_names) | |
a8bc7b56 | 16382 | xfree (lh->file_names); |
debd256d JB |
16383 | |
16384 | /* Similarly for the include directory names. */ | |
16385 | if (lh->include_dirs) | |
a8bc7b56 | 16386 | xfree (lh->include_dirs); |
debd256d | 16387 | |
a8bc7b56 | 16388 | xfree (lh); |
debd256d JB |
16389 | } |
16390 | ||
debd256d | 16391 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 16392 | |
debd256d | 16393 | static void |
d521ce57 | 16394 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 16395 | { |
debd256d JB |
16396 | /* Grow the array if necessary. */ |
16397 | if (lh->include_dirs_size == 0) | |
c5aa993b | 16398 | { |
debd256d JB |
16399 | lh->include_dirs_size = 1; /* for testing */ |
16400 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
16401 | * sizeof (*lh->include_dirs)); | |
16402 | } | |
16403 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
16404 | { | |
16405 | lh->include_dirs_size *= 2; | |
16406 | lh->include_dirs = xrealloc (lh->include_dirs, | |
16407 | (lh->include_dirs_size | |
16408 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 16409 | } |
c906108c | 16410 | |
debd256d JB |
16411 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
16412 | } | |
6e70227d | 16413 | |
debd256d | 16414 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 16415 | |
debd256d JB |
16416 | static void |
16417 | add_file_name (struct line_header *lh, | |
d521ce57 | 16418 | const char *name, |
debd256d JB |
16419 | unsigned int dir_index, |
16420 | unsigned int mod_time, | |
16421 | unsigned int length) | |
16422 | { | |
16423 | struct file_entry *fe; | |
16424 | ||
16425 | /* Grow the array if necessary. */ | |
16426 | if (lh->file_names_size == 0) | |
16427 | { | |
16428 | lh->file_names_size = 1; /* for testing */ | |
16429 | lh->file_names = xmalloc (lh->file_names_size | |
16430 | * sizeof (*lh->file_names)); | |
16431 | } | |
16432 | else if (lh->num_file_names >= lh->file_names_size) | |
16433 | { | |
16434 | lh->file_names_size *= 2; | |
16435 | lh->file_names = xrealloc (lh->file_names, | |
16436 | (lh->file_names_size | |
16437 | * sizeof (*lh->file_names))); | |
16438 | } | |
16439 | ||
16440 | fe = &lh->file_names[lh->num_file_names++]; | |
16441 | fe->name = name; | |
16442 | fe->dir_index = dir_index; | |
16443 | fe->mod_time = mod_time; | |
16444 | fe->length = length; | |
aaa75496 | 16445 | fe->included_p = 0; |
cb1df416 | 16446 | fe->symtab = NULL; |
debd256d | 16447 | } |
6e70227d | 16448 | |
36586728 TT |
16449 | /* A convenience function to find the proper .debug_line section for a |
16450 | CU. */ | |
16451 | ||
16452 | static struct dwarf2_section_info * | |
16453 | get_debug_line_section (struct dwarf2_cu *cu) | |
16454 | { | |
16455 | struct dwarf2_section_info *section; | |
16456 | ||
16457 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
16458 | DWO file. */ | |
16459 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
16460 | section = &cu->dwo_unit->dwo_file->sections.line; | |
16461 | else if (cu->per_cu->is_dwz) | |
16462 | { | |
16463 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16464 | ||
16465 | section = &dwz->line; | |
16466 | } | |
16467 | else | |
16468 | section = &dwarf2_per_objfile->line; | |
16469 | ||
16470 | return section; | |
16471 | } | |
16472 | ||
debd256d | 16473 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 16474 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 16475 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
16476 | |
16477 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
16478 | the returned object point into the dwarf line section buffer, |
16479 | and must not be freed. */ | |
ae2de4f8 | 16480 | |
debd256d | 16481 | static struct line_header * |
3019eac3 | 16482 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
16483 | { |
16484 | struct cleanup *back_to; | |
16485 | struct line_header *lh; | |
d521ce57 | 16486 | const gdb_byte *line_ptr; |
c764a876 | 16487 | unsigned int bytes_read, offset_size; |
debd256d | 16488 | int i; |
d521ce57 | 16489 | const char *cur_dir, *cur_file; |
3019eac3 DE |
16490 | struct dwarf2_section_info *section; |
16491 | bfd *abfd; | |
16492 | ||
36586728 | 16493 | section = get_debug_line_section (cu); |
3019eac3 DE |
16494 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
16495 | if (section->buffer == NULL) | |
debd256d | 16496 | { |
3019eac3 DE |
16497 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
16498 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
16499 | else | |
16500 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
16501 | return 0; |
16502 | } | |
16503 | ||
fceca515 DE |
16504 | /* We can't do this until we know the section is non-empty. |
16505 | Only then do we know we have such a section. */ | |
a32a8923 | 16506 | abfd = get_section_bfd_owner (section); |
fceca515 | 16507 | |
a738430d MK |
16508 | /* Make sure that at least there's room for the total_length field. |
16509 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 16510 | if (offset + 4 >= section->size) |
debd256d | 16511 | { |
4d3c2250 | 16512 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
16513 | return 0; |
16514 | } | |
16515 | ||
16516 | lh = xmalloc (sizeof (*lh)); | |
16517 | memset (lh, 0, sizeof (*lh)); | |
16518 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
16519 | (void *) lh); | |
16520 | ||
3019eac3 | 16521 | line_ptr = section->buffer + offset; |
debd256d | 16522 | |
a738430d | 16523 | /* Read in the header. */ |
6e70227d | 16524 | lh->total_length = |
c764a876 DE |
16525 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
16526 | &bytes_read, &offset_size); | |
debd256d | 16527 | line_ptr += bytes_read; |
3019eac3 | 16528 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 16529 | { |
4d3c2250 | 16530 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 16531 | do_cleanups (back_to); |
debd256d JB |
16532 | return 0; |
16533 | } | |
16534 | lh->statement_program_end = line_ptr + lh->total_length; | |
16535 | lh->version = read_2_bytes (abfd, line_ptr); | |
16536 | line_ptr += 2; | |
c764a876 DE |
16537 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
16538 | line_ptr += offset_size; | |
debd256d JB |
16539 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
16540 | line_ptr += 1; | |
2dc7f7b3 TT |
16541 | if (lh->version >= 4) |
16542 | { | |
16543 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
16544 | line_ptr += 1; | |
16545 | } | |
16546 | else | |
16547 | lh->maximum_ops_per_instruction = 1; | |
16548 | ||
16549 | if (lh->maximum_ops_per_instruction == 0) | |
16550 | { | |
16551 | lh->maximum_ops_per_instruction = 1; | |
16552 | complaint (&symfile_complaints, | |
3e43a32a MS |
16553 | _("invalid maximum_ops_per_instruction " |
16554 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
16555 | } |
16556 | ||
debd256d JB |
16557 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
16558 | line_ptr += 1; | |
16559 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
16560 | line_ptr += 1; | |
16561 | lh->line_range = read_1_byte (abfd, line_ptr); | |
16562 | line_ptr += 1; | |
16563 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
16564 | line_ptr += 1; | |
16565 | lh->standard_opcode_lengths | |
fe1b8b76 | 16566 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
16567 | |
16568 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
16569 | for (i = 1; i < lh->opcode_base; ++i) | |
16570 | { | |
16571 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
16572 | line_ptr += 1; | |
16573 | } | |
16574 | ||
a738430d | 16575 | /* Read directory table. */ |
9b1c24c8 | 16576 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16577 | { |
16578 | line_ptr += bytes_read; | |
16579 | add_include_dir (lh, cur_dir); | |
16580 | } | |
16581 | line_ptr += bytes_read; | |
16582 | ||
a738430d | 16583 | /* Read file name table. */ |
9b1c24c8 | 16584 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16585 | { |
16586 | unsigned int dir_index, mod_time, length; | |
16587 | ||
16588 | line_ptr += bytes_read; | |
16589 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16590 | line_ptr += bytes_read; | |
16591 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16592 | line_ptr += bytes_read; | |
16593 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16594 | line_ptr += bytes_read; | |
16595 | ||
16596 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16597 | } | |
16598 | line_ptr += bytes_read; | |
6e70227d | 16599 | lh->statement_program_start = line_ptr; |
debd256d | 16600 | |
3019eac3 | 16601 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 16602 | complaint (&symfile_complaints, |
3e43a32a MS |
16603 | _("line number info header doesn't " |
16604 | "fit in `.debug_line' section")); | |
debd256d JB |
16605 | |
16606 | discard_cleanups (back_to); | |
16607 | return lh; | |
16608 | } | |
c906108c | 16609 | |
c6da4cef DE |
16610 | /* Subroutine of dwarf_decode_lines to simplify it. |
16611 | Return the file name of the psymtab for included file FILE_INDEX | |
16612 | in line header LH of PST. | |
16613 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
16614 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
16615 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
16616 | ||
16617 | The function creates dangling cleanup registration. */ | |
c6da4cef | 16618 | |
d521ce57 | 16619 | static const char * |
c6da4cef DE |
16620 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
16621 | const struct partial_symtab *pst, | |
16622 | const char *comp_dir) | |
16623 | { | |
16624 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
16625 | const char *include_name = fe.name; |
16626 | const char *include_name_to_compare = include_name; | |
16627 | const char *dir_name = NULL; | |
72b9f47f TT |
16628 | const char *pst_filename; |
16629 | char *copied_name = NULL; | |
c6da4cef DE |
16630 | int file_is_pst; |
16631 | ||
16632 | if (fe.dir_index) | |
16633 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
16634 | ||
16635 | if (!IS_ABSOLUTE_PATH (include_name) | |
16636 | && (dir_name != NULL || comp_dir != NULL)) | |
16637 | { | |
16638 | /* Avoid creating a duplicate psymtab for PST. | |
16639 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
16640 | Before we do the comparison, however, we need to account | |
16641 | for DIR_NAME and COMP_DIR. | |
16642 | First prepend dir_name (if non-NULL). If we still don't | |
16643 | have an absolute path prepend comp_dir (if non-NULL). | |
16644 | However, the directory we record in the include-file's | |
16645 | psymtab does not contain COMP_DIR (to match the | |
16646 | corresponding symtab(s)). | |
16647 | ||
16648 | Example: | |
16649 | ||
16650 | bash$ cd /tmp | |
16651 | bash$ gcc -g ./hello.c | |
16652 | include_name = "hello.c" | |
16653 | dir_name = "." | |
16654 | DW_AT_comp_dir = comp_dir = "/tmp" | |
16655 | DW_AT_name = "./hello.c" */ | |
16656 | ||
16657 | if (dir_name != NULL) | |
16658 | { | |
d521ce57 TT |
16659 | char *tem = concat (dir_name, SLASH_STRING, |
16660 | include_name, (char *)NULL); | |
16661 | ||
16662 | make_cleanup (xfree, tem); | |
16663 | include_name = tem; | |
c6da4cef | 16664 | include_name_to_compare = include_name; |
c6da4cef DE |
16665 | } |
16666 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
16667 | { | |
d521ce57 TT |
16668 | char *tem = concat (comp_dir, SLASH_STRING, |
16669 | include_name, (char *)NULL); | |
16670 | ||
16671 | make_cleanup (xfree, tem); | |
16672 | include_name_to_compare = tem; | |
c6da4cef DE |
16673 | } |
16674 | } | |
16675 | ||
16676 | pst_filename = pst->filename; | |
16677 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
16678 | { | |
72b9f47f TT |
16679 | copied_name = concat (pst->dirname, SLASH_STRING, |
16680 | pst_filename, (char *)NULL); | |
16681 | pst_filename = copied_name; | |
c6da4cef DE |
16682 | } |
16683 | ||
1e3fad37 | 16684 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 16685 | |
72b9f47f TT |
16686 | if (copied_name != NULL) |
16687 | xfree (copied_name); | |
c6da4cef DE |
16688 | |
16689 | if (file_is_pst) | |
16690 | return NULL; | |
16691 | return include_name; | |
16692 | } | |
16693 | ||
c91513d8 PP |
16694 | /* Ignore this record_line request. */ |
16695 | ||
16696 | static void | |
16697 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
16698 | { | |
16699 | return; | |
16700 | } | |
16701 | ||
f3f5162e DE |
16702 | /* Subroutine of dwarf_decode_lines to simplify it. |
16703 | Process the line number information in LH. */ | |
debd256d | 16704 | |
c906108c | 16705 | static void |
f3f5162e DE |
16706 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
16707 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 16708 | { |
d521ce57 TT |
16709 | const gdb_byte *line_ptr, *extended_end; |
16710 | const gdb_byte *line_end; | |
a8c50c1f | 16711 | unsigned int bytes_read, extended_len; |
c906108c | 16712 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
16713 | CORE_ADDR baseaddr; |
16714 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 16715 | bfd *abfd = objfile->obfd; |
fbf65064 | 16716 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 16717 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 16718 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
16719 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
16720 | = record_line; | |
e142c38c DJ |
16721 | |
16722 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 16723 | |
debd256d JB |
16724 | line_ptr = lh->statement_program_start; |
16725 | line_end = lh->statement_program_end; | |
c906108c SS |
16726 | |
16727 | /* Read the statement sequences until there's nothing left. */ | |
16728 | while (line_ptr < line_end) | |
16729 | { | |
16730 | /* state machine registers */ | |
16731 | CORE_ADDR address = 0; | |
16732 | unsigned int file = 1; | |
16733 | unsigned int line = 1; | |
16734 | unsigned int column = 0; | |
debd256d | 16735 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
16736 | int basic_block = 0; |
16737 | int end_sequence = 0; | |
fbf65064 | 16738 | CORE_ADDR addr; |
2dc7f7b3 | 16739 | unsigned char op_index = 0; |
c906108c | 16740 | |
aaa75496 | 16741 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 16742 | { |
aaa75496 | 16743 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
16744 | /* lh->include_dirs and lh->file_names are 0-based, but the |
16745 | directory and file name numbers in the statement program | |
16746 | are 1-based. */ | |
16747 | struct file_entry *fe = &lh->file_names[file - 1]; | |
d521ce57 | 16748 | const char *dir = NULL; |
a738430d | 16749 | |
debd256d JB |
16750 | if (fe->dir_index) |
16751 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
16752 | |
16753 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
16754 | } |
16755 | ||
a738430d | 16756 | /* Decode the table. */ |
c5aa993b | 16757 | while (!end_sequence) |
c906108c SS |
16758 | { |
16759 | op_code = read_1_byte (abfd, line_ptr); | |
16760 | line_ptr += 1; | |
59205f5a JB |
16761 | if (line_ptr > line_end) |
16762 | { | |
16763 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
16764 | break; | |
16765 | } | |
9aa1fe7e | 16766 | |
debd256d | 16767 | if (op_code >= lh->opcode_base) |
6e70227d | 16768 | { |
a738430d | 16769 | /* Special operand. */ |
debd256d | 16770 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
16771 | address += (((op_index + (adj_opcode / lh->line_range)) |
16772 | / lh->maximum_ops_per_instruction) | |
16773 | * lh->minimum_instruction_length); | |
16774 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
16775 | % lh->maximum_ops_per_instruction); | |
debd256d | 16776 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 16777 | if (lh->num_file_names < file || file == 0) |
25e43795 | 16778 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
16779 | /* For now we ignore lines not starting on an |
16780 | instruction boundary. */ | |
16781 | else if (op_index == 0) | |
25e43795 DJ |
16782 | { |
16783 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 16784 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16785 | { |
16786 | if (last_subfile != current_subfile) | |
16787 | { | |
16788 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16789 | if (last_subfile) | |
c91513d8 | 16790 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16791 | last_subfile = current_subfile; |
16792 | } | |
25e43795 | 16793 | /* Append row to matrix using current values. */ |
7019d805 | 16794 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16795 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 16796 | } |
25e43795 | 16797 | } |
ca5f395d | 16798 | basic_block = 0; |
9aa1fe7e GK |
16799 | } |
16800 | else switch (op_code) | |
c906108c SS |
16801 | { |
16802 | case DW_LNS_extended_op: | |
3e43a32a MS |
16803 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
16804 | &bytes_read); | |
473b7be6 | 16805 | line_ptr += bytes_read; |
a8c50c1f | 16806 | extended_end = line_ptr + extended_len; |
c906108c SS |
16807 | extended_op = read_1_byte (abfd, line_ptr); |
16808 | line_ptr += 1; | |
16809 | switch (extended_op) | |
16810 | { | |
16811 | case DW_LNE_end_sequence: | |
c91513d8 | 16812 | p_record_line = record_line; |
c906108c | 16813 | end_sequence = 1; |
c906108c SS |
16814 | break; |
16815 | case DW_LNE_set_address: | |
e7c27a73 | 16816 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
16817 | |
16818 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16819 | { | |
16820 | /* This line table is for a function which has been | |
16821 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
16822 | ||
16823 | long line_offset | |
36586728 | 16824 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
16825 | |
16826 | complaint (&symfile_complaints, | |
16827 | _(".debug_line address at offset 0x%lx is 0 " | |
16828 | "[in module %s]"), | |
4262abfb | 16829 | line_offset, objfile_name (objfile)); |
c91513d8 PP |
16830 | p_record_line = noop_record_line; |
16831 | } | |
16832 | ||
2dc7f7b3 | 16833 | op_index = 0; |
107d2387 AC |
16834 | line_ptr += bytes_read; |
16835 | address += baseaddr; | |
c906108c SS |
16836 | break; |
16837 | case DW_LNE_define_file: | |
debd256d | 16838 | { |
d521ce57 | 16839 | const char *cur_file; |
debd256d | 16840 | unsigned int dir_index, mod_time, length; |
6e70227d | 16841 | |
3e43a32a MS |
16842 | cur_file = read_direct_string (abfd, line_ptr, |
16843 | &bytes_read); | |
debd256d JB |
16844 | line_ptr += bytes_read; |
16845 | dir_index = | |
16846 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16847 | line_ptr += bytes_read; | |
16848 | mod_time = | |
16849 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16850 | line_ptr += bytes_read; | |
16851 | length = | |
16852 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16853 | line_ptr += bytes_read; | |
16854 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16855 | } | |
c906108c | 16856 | break; |
d0c6ba3d CC |
16857 | case DW_LNE_set_discriminator: |
16858 | /* The discriminator is not interesting to the debugger; | |
16859 | just ignore it. */ | |
16860 | line_ptr = extended_end; | |
16861 | break; | |
c906108c | 16862 | default: |
4d3c2250 | 16863 | complaint (&symfile_complaints, |
e2e0b3e5 | 16864 | _("mangled .debug_line section")); |
debd256d | 16865 | return; |
c906108c | 16866 | } |
a8c50c1f DJ |
16867 | /* Make sure that we parsed the extended op correctly. If e.g. |
16868 | we expected a different address size than the producer used, | |
16869 | we may have read the wrong number of bytes. */ | |
16870 | if (line_ptr != extended_end) | |
16871 | { | |
16872 | complaint (&symfile_complaints, | |
16873 | _("mangled .debug_line section")); | |
16874 | return; | |
16875 | } | |
c906108c SS |
16876 | break; |
16877 | case DW_LNS_copy: | |
59205f5a | 16878 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
16879 | dwarf2_debug_line_missing_file_complaint (); |
16880 | else | |
366da635 | 16881 | { |
25e43795 | 16882 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 16883 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16884 | { |
16885 | if (last_subfile != current_subfile) | |
16886 | { | |
16887 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16888 | if (last_subfile) | |
c91513d8 | 16889 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16890 | last_subfile = current_subfile; |
16891 | } | |
7019d805 | 16892 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16893 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 16894 | } |
366da635 | 16895 | } |
c906108c SS |
16896 | basic_block = 0; |
16897 | break; | |
16898 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
16899 | { |
16900 | CORE_ADDR adjust | |
16901 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16902 | ||
16903 | address += (((op_index + adjust) | |
16904 | / lh->maximum_ops_per_instruction) | |
16905 | * lh->minimum_instruction_length); | |
16906 | op_index = ((op_index + adjust) | |
16907 | % lh->maximum_ops_per_instruction); | |
16908 | line_ptr += bytes_read; | |
16909 | } | |
c906108c SS |
16910 | break; |
16911 | case DW_LNS_advance_line: | |
16912 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
16913 | line_ptr += bytes_read; | |
16914 | break; | |
16915 | case DW_LNS_set_file: | |
debd256d | 16916 | { |
a738430d MK |
16917 | /* The arrays lh->include_dirs and lh->file_names are |
16918 | 0-based, but the directory and file name numbers in | |
16919 | the statement program are 1-based. */ | |
debd256d | 16920 | struct file_entry *fe; |
d521ce57 | 16921 | const char *dir = NULL; |
a738430d | 16922 | |
debd256d JB |
16923 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
16924 | line_ptr += bytes_read; | |
59205f5a | 16925 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
16926 | dwarf2_debug_line_missing_file_complaint (); |
16927 | else | |
16928 | { | |
16929 | fe = &lh->file_names[file - 1]; | |
16930 | if (fe->dir_index) | |
16931 | dir = lh->include_dirs[fe->dir_index - 1]; | |
16932 | if (!decode_for_pst_p) | |
16933 | { | |
16934 | last_subfile = current_subfile; | |
16935 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
16936 | } | |
16937 | } | |
debd256d | 16938 | } |
c906108c SS |
16939 | break; |
16940 | case DW_LNS_set_column: | |
16941 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16942 | line_ptr += bytes_read; | |
16943 | break; | |
16944 | case DW_LNS_negate_stmt: | |
16945 | is_stmt = (!is_stmt); | |
16946 | break; | |
16947 | case DW_LNS_set_basic_block: | |
16948 | basic_block = 1; | |
16949 | break; | |
c2c6d25f JM |
16950 | /* Add to the address register of the state machine the |
16951 | address increment value corresponding to special opcode | |
a738430d MK |
16952 | 255. I.e., this value is scaled by the minimum |
16953 | instruction length since special opcode 255 would have | |
b021a221 | 16954 | scaled the increment. */ |
c906108c | 16955 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
16956 | { |
16957 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
16958 | ||
16959 | address += (((op_index + adjust) | |
16960 | / lh->maximum_ops_per_instruction) | |
16961 | * lh->minimum_instruction_length); | |
16962 | op_index = ((op_index + adjust) | |
16963 | % lh->maximum_ops_per_instruction); | |
16964 | } | |
c906108c SS |
16965 | break; |
16966 | case DW_LNS_fixed_advance_pc: | |
16967 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 16968 | op_index = 0; |
c906108c SS |
16969 | line_ptr += 2; |
16970 | break; | |
9aa1fe7e | 16971 | default: |
a738430d MK |
16972 | { |
16973 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 16974 | int i; |
a738430d | 16975 | |
debd256d | 16976 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
16977 | { |
16978 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16979 | line_ptr += bytes_read; | |
16980 | } | |
16981 | } | |
c906108c SS |
16982 | } |
16983 | } | |
59205f5a JB |
16984 | if (lh->num_file_names < file || file == 0) |
16985 | dwarf2_debug_line_missing_file_complaint (); | |
16986 | else | |
16987 | { | |
16988 | lh->file_names[file - 1].included_p = 1; | |
16989 | if (!decode_for_pst_p) | |
fbf65064 UW |
16990 | { |
16991 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 16992 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 16993 | } |
59205f5a | 16994 | } |
c906108c | 16995 | } |
f3f5162e DE |
16996 | } |
16997 | ||
16998 | /* Decode the Line Number Program (LNP) for the given line_header | |
16999 | structure and CU. The actual information extracted and the type | |
17000 | of structures created from the LNP depends on the value of PST. | |
17001 | ||
17002 | 1. If PST is NULL, then this procedure uses the data from the program | |
17003 | to create all necessary symbol tables, and their linetables. | |
17004 | ||
17005 | 2. If PST is not NULL, this procedure reads the program to determine | |
17006 | the list of files included by the unit represented by PST, and | |
17007 | builds all the associated partial symbol tables. | |
17008 | ||
17009 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17010 | It is used for relative paths in the line table. | |
17011 | NOTE: When processing partial symtabs (pst != NULL), | |
17012 | comp_dir == pst->dirname. | |
17013 | ||
17014 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
17015 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
17016 | symtab we don't use it in the name of the psymtabs we create. | |
17017 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
17018 | A good testcase for this is mb-inline.exp. */ | |
17019 | ||
17020 | static void | |
17021 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
17022 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
17023 | int want_line_info) | |
17024 | { | |
17025 | struct objfile *objfile = cu->objfile; | |
17026 | const int decode_for_pst_p = (pst != NULL); | |
17027 | struct subfile *first_subfile = current_subfile; | |
17028 | ||
17029 | if (want_line_info) | |
17030 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
17031 | |
17032 | if (decode_for_pst_p) | |
17033 | { | |
17034 | int file_index; | |
17035 | ||
17036 | /* Now that we're done scanning the Line Header Program, we can | |
17037 | create the psymtab of each included file. */ | |
17038 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
17039 | if (lh->file_names[file_index].included_p == 1) | |
17040 | { | |
d521ce57 | 17041 | const char *include_name = |
c6da4cef DE |
17042 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
17043 | if (include_name != NULL) | |
aaa75496 JB |
17044 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
17045 | } | |
17046 | } | |
cb1df416 DJ |
17047 | else |
17048 | { | |
17049 | /* Make sure a symtab is created for every file, even files | |
17050 | which contain only variables (i.e. no code with associated | |
17051 | line numbers). */ | |
cb1df416 | 17052 | int i; |
cb1df416 DJ |
17053 | |
17054 | for (i = 0; i < lh->num_file_names; i++) | |
17055 | { | |
d521ce57 | 17056 | const char *dir = NULL; |
f3f5162e | 17057 | struct file_entry *fe; |
9a619af0 | 17058 | |
cb1df416 DJ |
17059 | fe = &lh->file_names[i]; |
17060 | if (fe->dir_index) | |
17061 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17062 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
17063 | ||
17064 | /* Skip the main file; we don't need it, and it must be | |
17065 | allocated last, so that it will show up before the | |
17066 | non-primary symtabs in the objfile's symtab list. */ | |
17067 | if (current_subfile == first_subfile) | |
17068 | continue; | |
17069 | ||
17070 | if (current_subfile->symtab == NULL) | |
17071 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 17072 | objfile); |
cb1df416 DJ |
17073 | fe->symtab = current_subfile->symtab; |
17074 | } | |
17075 | } | |
c906108c SS |
17076 | } |
17077 | ||
17078 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
17079 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
17080 | or NULL if not known. COMP_DIR is the compilation directory for the |
17081 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
17082 | This routine tries to keep line numbers from identical absolute and |
17083 | relative file names in a common subfile. | |
17084 | ||
17085 | Using the `list' example from the GDB testsuite, which resides in | |
17086 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
17087 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
17088 | ||
c5aa993b JM |
17089 | DW_AT_name: /srcdir/list0.c |
17090 | DW_AT_comp_dir: /compdir | |
357e46e7 | 17091 | files.files[0].name: list0.h |
c5aa993b | 17092 | files.files[0].dir: /srcdir |
357e46e7 | 17093 | files.files[1].name: list0.c |
c5aa993b | 17094 | files.files[1].dir: /srcdir |
c906108c SS |
17095 | |
17096 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
17097 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
17098 | start_subfile will ensure that this happens provided that we pass the | |
17099 | concatenation of files.files[1].dir and files.files[1].name as the | |
17100 | subfile's name. */ | |
c906108c SS |
17101 | |
17102 | static void | |
d521ce57 | 17103 | dwarf2_start_subfile (const char *filename, const char *dirname, |
3e43a32a | 17104 | const char *comp_dir) |
c906108c | 17105 | { |
d521ce57 | 17106 | char *copy = NULL; |
4f1520fb FR |
17107 | |
17108 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
17109 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
17110 | second argument to start_subfile. To be consistent, we do the | |
17111 | same here. In order not to lose the line information directory, | |
17112 | we concatenate it to the filename when it makes sense. | |
17113 | Note that the Dwarf3 standard says (speaking of filenames in line | |
17114 | information): ``The directory index is ignored for file names | |
17115 | that represent full path names''. Thus ignoring dirname in the | |
17116 | `else' branch below isn't an issue. */ | |
c906108c | 17117 | |
d5166ae1 | 17118 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
17119 | { |
17120 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
17121 | filename = copy; | |
17122 | } | |
c906108c | 17123 | |
d521ce57 | 17124 | start_subfile (filename, comp_dir); |
4f1520fb | 17125 | |
d521ce57 TT |
17126 | if (copy != NULL) |
17127 | xfree (copy); | |
c906108c SS |
17128 | } |
17129 | ||
f4dc4d17 DE |
17130 | /* Start a symtab for DWARF. |
17131 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
17132 | ||
17133 | static void | |
17134 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 17135 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
17136 | { |
17137 | start_symtab (name, comp_dir, low_pc); | |
17138 | record_debugformat ("DWARF 2"); | |
17139 | record_producer (cu->producer); | |
17140 | ||
17141 | /* We assume that we're processing GCC output. */ | |
17142 | processing_gcc_compilation = 2; | |
17143 | ||
4d4ec4e5 | 17144 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
17145 | } |
17146 | ||
4c2df51b DJ |
17147 | static void |
17148 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 17149 | struct dwarf2_cu *cu) |
4c2df51b | 17150 | { |
e7c27a73 DJ |
17151 | struct objfile *objfile = cu->objfile; |
17152 | struct comp_unit_head *cu_header = &cu->header; | |
17153 | ||
4c2df51b DJ |
17154 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
17155 | code here to turn a symbol with DW_AT_external and a | |
17156 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
17157 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
17158 | with some versions of binutils) where shared libraries could have | |
17159 | relocations against symbols in their debug information - the | |
17160 | minimal symbol would have the right address, but the debug info | |
17161 | would not. It's no longer necessary, because we will explicitly | |
17162 | apply relocations when we read in the debug information now. */ | |
17163 | ||
17164 | /* A DW_AT_location attribute with no contents indicates that a | |
17165 | variable has been optimized away. */ | |
17166 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
17167 | { | |
f1e6e072 | 17168 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
17169 | return; |
17170 | } | |
17171 | ||
17172 | /* Handle one degenerate form of location expression specially, to | |
17173 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
17174 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
17175 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
17176 | |
17177 | if (attr_form_is_block (attr) | |
3019eac3 DE |
17178 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
17179 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
17180 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
17181 | && (DW_BLOCK (attr)->size | |
17182 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 17183 | { |
891d2f0b | 17184 | unsigned int dummy; |
4c2df51b | 17185 | |
3019eac3 DE |
17186 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
17187 | SYMBOL_VALUE_ADDRESS (sym) = | |
17188 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
17189 | else | |
17190 | SYMBOL_VALUE_ADDRESS (sym) = | |
17191 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 17192 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
17193 | fixup_symbol_section (sym, objfile); |
17194 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
17195 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
17196 | return; |
17197 | } | |
17198 | ||
17199 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
17200 | expression evaluator, and use LOC_COMPUTED only when necessary | |
17201 | (i.e. when the value of a register or memory location is | |
17202 | referenced, or a thread-local block, etc.). Then again, it might | |
17203 | not be worthwhile. I'm assuming that it isn't unless performance | |
17204 | or memory numbers show me otherwise. */ | |
17205 | ||
f1e6e072 | 17206 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 17207 | |
f1e6e072 | 17208 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 17209 | cu->has_loclist = 1; |
4c2df51b DJ |
17210 | } |
17211 | ||
c906108c SS |
17212 | /* Given a pointer to a DWARF information entry, figure out if we need |
17213 | to make a symbol table entry for it, and if so, create a new entry | |
17214 | and return a pointer to it. | |
17215 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
17216 | used the passed type. |
17217 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
17218 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
17219 | |
17220 | static struct symbol * | |
34eaf542 TT |
17221 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
17222 | struct symbol *space) | |
c906108c | 17223 | { |
e7c27a73 | 17224 | struct objfile *objfile = cu->objfile; |
c906108c | 17225 | struct symbol *sym = NULL; |
15d034d0 | 17226 | const char *name; |
c906108c SS |
17227 | struct attribute *attr = NULL; |
17228 | struct attribute *attr2 = NULL; | |
e142c38c | 17229 | CORE_ADDR baseaddr; |
e37fd15a SW |
17230 | struct pending **list_to_add = NULL; |
17231 | ||
edb3359d | 17232 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
17233 | |
17234 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17235 | |
94af9270 | 17236 | name = dwarf2_name (die, cu); |
c906108c SS |
17237 | if (name) |
17238 | { | |
94af9270 | 17239 | const char *linkagename; |
34eaf542 | 17240 | int suppress_add = 0; |
94af9270 | 17241 | |
34eaf542 TT |
17242 | if (space) |
17243 | sym = space; | |
17244 | else | |
e623cf5d | 17245 | sym = allocate_symbol (objfile); |
c906108c | 17246 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
17247 | |
17248 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 17249 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
17250 | linkagename = dwarf2_physname (name, die, cu); |
17251 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 17252 | |
f55ee35c JK |
17253 | /* Fortran does not have mangling standard and the mangling does differ |
17254 | between gfortran, iFort etc. */ | |
17255 | if (cu->language == language_fortran | |
b250c185 | 17256 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 17257 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 17258 | dwarf2_full_name (name, die, cu), |
29df156d | 17259 | NULL); |
f55ee35c | 17260 | |
c906108c | 17261 | /* Default assumptions. |
c5aa993b | 17262 | Use the passed type or decode it from the die. */ |
176620f1 | 17263 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 17264 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
17265 | if (type != NULL) |
17266 | SYMBOL_TYPE (sym) = type; | |
17267 | else | |
e7c27a73 | 17268 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
17269 | attr = dwarf2_attr (die, |
17270 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
17271 | cu); | |
c906108c SS |
17272 | if (attr) |
17273 | { | |
17274 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
17275 | } | |
cb1df416 | 17276 | |
edb3359d DJ |
17277 | attr = dwarf2_attr (die, |
17278 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
17279 | cu); | |
cb1df416 DJ |
17280 | if (attr) |
17281 | { | |
17282 | int file_index = DW_UNSND (attr); | |
9a619af0 | 17283 | |
cb1df416 DJ |
17284 | if (cu->line_header == NULL |
17285 | || file_index > cu->line_header->num_file_names) | |
17286 | complaint (&symfile_complaints, | |
17287 | _("file index out of range")); | |
1c3d648d | 17288 | else if (file_index > 0) |
cb1df416 DJ |
17289 | { |
17290 | struct file_entry *fe; | |
9a619af0 | 17291 | |
cb1df416 DJ |
17292 | fe = &cu->line_header->file_names[file_index - 1]; |
17293 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
17294 | } | |
17295 | } | |
17296 | ||
c906108c SS |
17297 | switch (die->tag) |
17298 | { | |
17299 | case DW_TAG_label: | |
e142c38c | 17300 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
17301 | if (attr) |
17302 | { | |
17303 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
17304 | } | |
0f5238ed TT |
17305 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
17306 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 17307 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 17308 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
17309 | break; |
17310 | case DW_TAG_subprogram: | |
17311 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17312 | finish_block. */ | |
f1e6e072 | 17313 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 17314 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
17315 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
17316 | || cu->language == language_ada) | |
c906108c | 17317 | { |
2cfa0c8d JB |
17318 | /* Subprograms marked external are stored as a global symbol. |
17319 | Ada subprograms, whether marked external or not, are always | |
17320 | stored as a global symbol, because we want to be able to | |
17321 | access them globally. For instance, we want to be able | |
17322 | to break on a nested subprogram without having to | |
17323 | specify the context. */ | |
e37fd15a | 17324 | list_to_add = &global_symbols; |
c906108c SS |
17325 | } |
17326 | else | |
17327 | { | |
e37fd15a | 17328 | list_to_add = cu->list_in_scope; |
c906108c SS |
17329 | } |
17330 | break; | |
edb3359d DJ |
17331 | case DW_TAG_inlined_subroutine: |
17332 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17333 | finish_block. */ | |
f1e6e072 | 17334 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 17335 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 17336 | list_to_add = cu->list_in_scope; |
edb3359d | 17337 | break; |
34eaf542 TT |
17338 | case DW_TAG_template_value_param: |
17339 | suppress_add = 1; | |
17340 | /* Fall through. */ | |
72929c62 | 17341 | case DW_TAG_constant: |
c906108c | 17342 | case DW_TAG_variable: |
254e6b9e | 17343 | case DW_TAG_member: |
0963b4bd MS |
17344 | /* Compilation with minimal debug info may result in |
17345 | variables with missing type entries. Change the | |
17346 | misleading `void' type to something sensible. */ | |
c906108c | 17347 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 17348 | SYMBOL_TYPE (sym) |
46bf5051 | 17349 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 17350 | |
e142c38c | 17351 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
17352 | /* In the case of DW_TAG_member, we should only be called for |
17353 | static const members. */ | |
17354 | if (die->tag == DW_TAG_member) | |
17355 | { | |
3863f96c DE |
17356 | /* dwarf2_add_field uses die_is_declaration, |
17357 | so we do the same. */ | |
254e6b9e DE |
17358 | gdb_assert (die_is_declaration (die, cu)); |
17359 | gdb_assert (attr); | |
17360 | } | |
c906108c SS |
17361 | if (attr) |
17362 | { | |
e7c27a73 | 17363 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 17364 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 17365 | if (!suppress_add) |
34eaf542 TT |
17366 | { |
17367 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 17368 | list_to_add = &global_symbols; |
34eaf542 | 17369 | else |
e37fd15a | 17370 | list_to_add = cu->list_in_scope; |
34eaf542 | 17371 | } |
c906108c SS |
17372 | break; |
17373 | } | |
e142c38c | 17374 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17375 | if (attr) |
17376 | { | |
e7c27a73 | 17377 | var_decode_location (attr, sym, cu); |
e142c38c | 17378 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
17379 | |
17380 | /* Fortran explicitly imports any global symbols to the local | |
17381 | scope by DW_TAG_common_block. */ | |
17382 | if (cu->language == language_fortran && die->parent | |
17383 | && die->parent->tag == DW_TAG_common_block) | |
17384 | attr2 = NULL; | |
17385 | ||
caac4577 JG |
17386 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
17387 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
17388 | && !dwarf2_per_objfile->has_section_at_zero) | |
17389 | { | |
17390 | /* When a static variable is eliminated by the linker, | |
17391 | the corresponding debug information is not stripped | |
17392 | out, but the variable address is set to null; | |
17393 | do not add such variables into symbol table. */ | |
17394 | } | |
17395 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 17396 | { |
f55ee35c JK |
17397 | /* Workaround gfortran PR debug/40040 - it uses |
17398 | DW_AT_location for variables in -fPIC libraries which may | |
17399 | get overriden by other libraries/executable and get | |
17400 | a different address. Resolve it by the minimal symbol | |
17401 | which may come from inferior's executable using copy | |
17402 | relocation. Make this workaround only for gfortran as for | |
17403 | other compilers GDB cannot guess the minimal symbol | |
17404 | Fortran mangling kind. */ | |
17405 | if (cu->language == language_fortran && die->parent | |
17406 | && die->parent->tag == DW_TAG_module | |
17407 | && cu->producer | |
17408 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 17409 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 17410 | |
1c809c68 TT |
17411 | /* A variable with DW_AT_external is never static, |
17412 | but it may be block-scoped. */ | |
17413 | list_to_add = (cu->list_in_scope == &file_symbols | |
17414 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 17415 | } |
c906108c | 17416 | else |
e37fd15a | 17417 | list_to_add = cu->list_in_scope; |
c906108c SS |
17418 | } |
17419 | else | |
17420 | { | |
17421 | /* We do not know the address of this symbol. | |
c5aa993b JM |
17422 | If it is an external symbol and we have type information |
17423 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
17424 | The address of the variable will then be determined from | |
17425 | the minimal symbol table whenever the variable is | |
17426 | referenced. */ | |
e142c38c | 17427 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
17428 | |
17429 | /* Fortran explicitly imports any global symbols to the local | |
17430 | scope by DW_TAG_common_block. */ | |
17431 | if (cu->language == language_fortran && die->parent | |
17432 | && die->parent->tag == DW_TAG_common_block) | |
17433 | { | |
17434 | /* SYMBOL_CLASS doesn't matter here because | |
17435 | read_common_block is going to reset it. */ | |
17436 | if (!suppress_add) | |
17437 | list_to_add = cu->list_in_scope; | |
17438 | } | |
17439 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
17440 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 17441 | { |
0fe7935b DJ |
17442 | /* A variable with DW_AT_external is never static, but it |
17443 | may be block-scoped. */ | |
17444 | list_to_add = (cu->list_in_scope == &file_symbols | |
17445 | ? &global_symbols : cu->list_in_scope); | |
17446 | ||
f1e6e072 | 17447 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 17448 | } |
442ddf59 JK |
17449 | else if (!die_is_declaration (die, cu)) |
17450 | { | |
17451 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
17452 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
17453 | if (!suppress_add) |
17454 | list_to_add = cu->list_in_scope; | |
442ddf59 | 17455 | } |
c906108c SS |
17456 | } |
17457 | break; | |
17458 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
17459 | /* If we are inside a function, mark this as an argument. If |
17460 | not, we might be looking at an argument to an inlined function | |
17461 | when we do not have enough information to show inlined frames; | |
17462 | pretend it's a local variable in that case so that the user can | |
17463 | still see it. */ | |
17464 | if (context_stack_depth > 0 | |
17465 | && context_stack[context_stack_depth - 1].name != NULL) | |
17466 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 17467 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17468 | if (attr) |
17469 | { | |
e7c27a73 | 17470 | var_decode_location (attr, sym, cu); |
c906108c | 17471 | } |
e142c38c | 17472 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17473 | if (attr) |
17474 | { | |
e7c27a73 | 17475 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17476 | } |
f346a30d | 17477 | |
e37fd15a | 17478 | list_to_add = cu->list_in_scope; |
c906108c SS |
17479 | break; |
17480 | case DW_TAG_unspecified_parameters: | |
17481 | /* From varargs functions; gdb doesn't seem to have any | |
17482 | interest in this information, so just ignore it for now. | |
17483 | (FIXME?) */ | |
17484 | break; | |
34eaf542 TT |
17485 | case DW_TAG_template_type_param: |
17486 | suppress_add = 1; | |
17487 | /* Fall through. */ | |
c906108c | 17488 | case DW_TAG_class_type: |
680b30c7 | 17489 | case DW_TAG_interface_type: |
c906108c SS |
17490 | case DW_TAG_structure_type: |
17491 | case DW_TAG_union_type: | |
72019c9c | 17492 | case DW_TAG_set_type: |
c906108c | 17493 | case DW_TAG_enumeration_type: |
f1e6e072 | 17494 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17495 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 17496 | |
63d06c5c | 17497 | { |
987504bb | 17498 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
17499 | really ever be static objects: otherwise, if you try |
17500 | to, say, break of a class's method and you're in a file | |
17501 | which doesn't mention that class, it won't work unless | |
17502 | the check for all static symbols in lookup_symbol_aux | |
17503 | saves you. See the OtherFileClass tests in | |
17504 | gdb.c++/namespace.exp. */ | |
17505 | ||
e37fd15a | 17506 | if (!suppress_add) |
34eaf542 | 17507 | { |
34eaf542 TT |
17508 | list_to_add = (cu->list_in_scope == &file_symbols |
17509 | && (cu->language == language_cplus | |
17510 | || cu->language == language_java) | |
17511 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 17512 | |
64382290 TT |
17513 | /* The semantics of C++ state that "struct foo { |
17514 | ... }" also defines a typedef for "foo". A Java | |
17515 | class declaration also defines a typedef for the | |
17516 | class. */ | |
17517 | if (cu->language == language_cplus | |
17518 | || cu->language == language_java | |
17519 | || cu->language == language_ada) | |
17520 | { | |
17521 | /* The symbol's name is already allocated along | |
17522 | with this objfile, so we don't need to | |
17523 | duplicate it for the type. */ | |
17524 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
17525 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
17526 | } | |
63d06c5c DC |
17527 | } |
17528 | } | |
c906108c SS |
17529 | break; |
17530 | case DW_TAG_typedef: | |
f1e6e072 | 17531 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 17532 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17533 | list_to_add = cu->list_in_scope; |
63d06c5c | 17534 | break; |
c906108c | 17535 | case DW_TAG_base_type: |
a02abb62 | 17536 | case DW_TAG_subrange_type: |
f1e6e072 | 17537 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17538 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17539 | list_to_add = cu->list_in_scope; |
c906108c SS |
17540 | break; |
17541 | case DW_TAG_enumerator: | |
e142c38c | 17542 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17543 | if (attr) |
17544 | { | |
e7c27a73 | 17545 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17546 | } |
63d06c5c DC |
17547 | { |
17548 | /* NOTE: carlton/2003-11-10: See comment above in the | |
17549 | DW_TAG_class_type, etc. block. */ | |
17550 | ||
e142c38c | 17551 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
17552 | && (cu->language == language_cplus |
17553 | || cu->language == language_java) | |
e142c38c | 17554 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 17555 | } |
c906108c | 17556 | break; |
5c4e30ca | 17557 | case DW_TAG_namespace: |
f1e6e072 | 17558 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 17559 | list_to_add = &global_symbols; |
5c4e30ca | 17560 | break; |
4357ac6c | 17561 | case DW_TAG_common_block: |
f1e6e072 | 17562 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
17563 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
17564 | add_symbol_to_list (sym, cu->list_in_scope); | |
17565 | break; | |
c906108c SS |
17566 | default: |
17567 | /* Not a tag we recognize. Hopefully we aren't processing | |
17568 | trash data, but since we must specifically ignore things | |
17569 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 17570 | this point. */ |
e2e0b3e5 | 17571 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 17572 | dwarf_tag_name (die->tag)); |
c906108c SS |
17573 | break; |
17574 | } | |
df8a16a1 | 17575 | |
e37fd15a SW |
17576 | if (suppress_add) |
17577 | { | |
17578 | sym->hash_next = objfile->template_symbols; | |
17579 | objfile->template_symbols = sym; | |
17580 | list_to_add = NULL; | |
17581 | } | |
17582 | ||
17583 | if (list_to_add != NULL) | |
17584 | add_symbol_to_list (sym, list_to_add); | |
17585 | ||
df8a16a1 DJ |
17586 | /* For the benefit of old versions of GCC, check for anonymous |
17587 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 17588 | if (!cu->processing_has_namespace_info |
94af9270 | 17589 | && cu->language == language_cplus) |
a10964d1 | 17590 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
17591 | } |
17592 | return (sym); | |
17593 | } | |
17594 | ||
34eaf542 TT |
17595 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
17596 | ||
17597 | static struct symbol * | |
17598 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
17599 | { | |
17600 | return new_symbol_full (die, type, cu, NULL); | |
17601 | } | |
17602 | ||
98bfdba5 PA |
17603 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
17604 | zero-extend it as appropriate for the symbol's type. The DWARF | |
17605 | standard (v4) is not entirely clear about the meaning of using | |
17606 | DW_FORM_dataN for a constant with a signed type, where the type is | |
17607 | wider than the data. The conclusion of a discussion on the DWARF | |
17608 | list was that this is unspecified. We choose to always zero-extend | |
17609 | because that is the interpretation long in use by GCC. */ | |
c906108c | 17610 | |
98bfdba5 | 17611 | static gdb_byte * |
ff39bb5e | 17612 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 17613 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 17614 | { |
e7c27a73 | 17615 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
17616 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
17617 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
17618 | LONGEST l = DW_UNSND (attr); |
17619 | ||
17620 | if (bits < sizeof (*value) * 8) | |
17621 | { | |
17622 | l &= ((LONGEST) 1 << bits) - 1; | |
17623 | *value = l; | |
17624 | } | |
17625 | else if (bits == sizeof (*value) * 8) | |
17626 | *value = l; | |
17627 | else | |
17628 | { | |
17629 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
17630 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
17631 | return bytes; | |
17632 | } | |
17633 | ||
17634 | return NULL; | |
17635 | } | |
17636 | ||
17637 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
17638 | the value does not fit in *VALUE, set *BYTES - either already | |
17639 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
17640 | or, set *BATON, if we translated the constant to a location | |
17641 | expression. */ | |
17642 | ||
17643 | static void | |
ff39bb5e | 17644 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
17645 | const char *name, struct obstack *obstack, |
17646 | struct dwarf2_cu *cu, | |
d521ce57 | 17647 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
17648 | struct dwarf2_locexpr_baton **baton) |
17649 | { | |
17650 | struct objfile *objfile = cu->objfile; | |
17651 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 17652 | struct dwarf_block *blk; |
98bfdba5 PA |
17653 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
17654 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
17655 | ||
17656 | *value = 0; | |
17657 | *bytes = NULL; | |
17658 | *baton = NULL; | |
c906108c SS |
17659 | |
17660 | switch (attr->form) | |
17661 | { | |
17662 | case DW_FORM_addr: | |
3019eac3 | 17663 | case DW_FORM_GNU_addr_index: |
ac56253d | 17664 | { |
ac56253d TT |
17665 | gdb_byte *data; |
17666 | ||
98bfdba5 PA |
17667 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
17668 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 17669 | cu_header->addr_size, |
98bfdba5 | 17670 | TYPE_LENGTH (type)); |
ac56253d TT |
17671 | /* Symbols of this form are reasonably rare, so we just |
17672 | piggyback on the existing location code rather than writing | |
17673 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 17674 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
17675 | (*baton)->per_cu = cu->per_cu; |
17676 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 17677 | |
98bfdba5 | 17678 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 17679 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 17680 | (*baton)->data = data; |
ac56253d TT |
17681 | |
17682 | data[0] = DW_OP_addr; | |
17683 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
17684 | byte_order, DW_ADDR (attr)); | |
17685 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 17686 | } |
c906108c | 17687 | break; |
4ac36638 | 17688 | case DW_FORM_string: |
93b5768b | 17689 | case DW_FORM_strp: |
3019eac3 | 17690 | case DW_FORM_GNU_str_index: |
36586728 | 17691 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
17692 | /* DW_STRING is already allocated on the objfile obstack, point |
17693 | directly to it. */ | |
d521ce57 | 17694 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 17695 | break; |
c906108c SS |
17696 | case DW_FORM_block1: |
17697 | case DW_FORM_block2: | |
17698 | case DW_FORM_block4: | |
17699 | case DW_FORM_block: | |
2dc7f7b3 | 17700 | case DW_FORM_exprloc: |
c906108c | 17701 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
17702 | if (TYPE_LENGTH (type) != blk->size) |
17703 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
17704 | TYPE_LENGTH (type)); | |
17705 | *bytes = blk->data; | |
c906108c | 17706 | break; |
2df3850c JM |
17707 | |
17708 | /* The DW_AT_const_value attributes are supposed to carry the | |
17709 | symbol's value "represented as it would be on the target | |
17710 | architecture." By the time we get here, it's already been | |
17711 | converted to host endianness, so we just need to sign- or | |
17712 | zero-extend it as appropriate. */ | |
17713 | case DW_FORM_data1: | |
3aef2284 | 17714 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 17715 | break; |
c906108c | 17716 | case DW_FORM_data2: |
3aef2284 | 17717 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 17718 | break; |
c906108c | 17719 | case DW_FORM_data4: |
3aef2284 | 17720 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 17721 | break; |
c906108c | 17722 | case DW_FORM_data8: |
3aef2284 | 17723 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
17724 | break; |
17725 | ||
c906108c | 17726 | case DW_FORM_sdata: |
98bfdba5 | 17727 | *value = DW_SND (attr); |
2df3850c JM |
17728 | break; |
17729 | ||
c906108c | 17730 | case DW_FORM_udata: |
98bfdba5 | 17731 | *value = DW_UNSND (attr); |
c906108c | 17732 | break; |
2df3850c | 17733 | |
c906108c | 17734 | default: |
4d3c2250 | 17735 | complaint (&symfile_complaints, |
e2e0b3e5 | 17736 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 17737 | dwarf_form_name (attr->form)); |
98bfdba5 | 17738 | *value = 0; |
c906108c SS |
17739 | break; |
17740 | } | |
17741 | } | |
17742 | ||
2df3850c | 17743 | |
98bfdba5 PA |
17744 | /* Copy constant value from an attribute to a symbol. */ |
17745 | ||
2df3850c | 17746 | static void |
ff39bb5e | 17747 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 17748 | struct dwarf2_cu *cu) |
2df3850c | 17749 | { |
98bfdba5 PA |
17750 | struct objfile *objfile = cu->objfile; |
17751 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 17752 | LONGEST value; |
d521ce57 | 17753 | const gdb_byte *bytes; |
98bfdba5 | 17754 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 17755 | |
98bfdba5 PA |
17756 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
17757 | SYMBOL_PRINT_NAME (sym), | |
17758 | &objfile->objfile_obstack, cu, | |
17759 | &value, &bytes, &baton); | |
2df3850c | 17760 | |
98bfdba5 PA |
17761 | if (baton != NULL) |
17762 | { | |
98bfdba5 | 17763 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17764 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
17765 | } |
17766 | else if (bytes != NULL) | |
17767 | { | |
17768 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 17769 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
17770 | } |
17771 | else | |
17772 | { | |
17773 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 17774 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 17775 | } |
2df3850c JM |
17776 | } |
17777 | ||
c906108c SS |
17778 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
17779 | ||
17780 | static struct type * | |
e7c27a73 | 17781 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17782 | { |
c906108c | 17783 | struct attribute *type_attr; |
c906108c | 17784 | |
e142c38c | 17785 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
17786 | if (!type_attr) |
17787 | { | |
17788 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 17789 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 17790 | } |
348e048f | 17791 | |
673bfd45 | 17792 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17793 | } |
17794 | ||
b4ba55a1 JB |
17795 | /* True iff CU's producer generates GNAT Ada auxiliary information |
17796 | that allows to find parallel types through that information instead | |
17797 | of having to do expensive parallel lookups by type name. */ | |
17798 | ||
17799 | static int | |
17800 | need_gnat_info (struct dwarf2_cu *cu) | |
17801 | { | |
17802 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
17803 | of GNAT produces this auxiliary information, without any indication | |
17804 | that it is produced. Part of enhancing the FSF version of GNAT | |
17805 | to produce that information will be to put in place an indicator | |
17806 | that we can use in order to determine whether the descriptive type | |
17807 | info is available or not. One suggestion that has been made is | |
17808 | to use a new attribute, attached to the CU die. For now, assume | |
17809 | that the descriptive type info is not available. */ | |
17810 | return 0; | |
17811 | } | |
17812 | ||
b4ba55a1 JB |
17813 | /* Return the auxiliary type of the die in question using its |
17814 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
17815 | attribute is not present. */ | |
17816 | ||
17817 | static struct type * | |
17818 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
17819 | { | |
b4ba55a1 | 17820 | struct attribute *type_attr; |
b4ba55a1 JB |
17821 | |
17822 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
17823 | if (!type_attr) | |
17824 | return NULL; | |
17825 | ||
673bfd45 | 17826 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
17827 | } |
17828 | ||
17829 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
17830 | descriptive type accordingly. */ | |
17831 | ||
17832 | static void | |
17833 | set_descriptive_type (struct type *type, struct die_info *die, | |
17834 | struct dwarf2_cu *cu) | |
17835 | { | |
17836 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
17837 | ||
17838 | if (descriptive_type) | |
17839 | { | |
17840 | ALLOCATE_GNAT_AUX_TYPE (type); | |
17841 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
17842 | } | |
17843 | } | |
17844 | ||
c906108c SS |
17845 | /* Return the containing type of the die in question using its |
17846 | DW_AT_containing_type attribute. */ | |
17847 | ||
17848 | static struct type * | |
e7c27a73 | 17849 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17850 | { |
c906108c | 17851 | struct attribute *type_attr; |
c906108c | 17852 | |
e142c38c | 17853 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
17854 | if (!type_attr) |
17855 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 17856 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 17857 | |
673bfd45 | 17858 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17859 | } |
17860 | ||
ac9ec31b DE |
17861 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
17862 | ||
17863 | static struct type * | |
17864 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
17865 | { | |
17866 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17867 | char *message, *saved; | |
17868 | ||
17869 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 17870 | objfile_name (objfile), |
ac9ec31b DE |
17871 | cu->header.offset.sect_off, |
17872 | die->offset.sect_off); | |
17873 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
17874 | message, strlen (message)); | |
17875 | xfree (message); | |
17876 | ||
17877 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
17878 | } | |
17879 | ||
673bfd45 | 17880 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
17881 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
17882 | DW_AT_containing_type. | |
673bfd45 DE |
17883 | If there is no type substitute an error marker. */ |
17884 | ||
c906108c | 17885 | static struct type * |
ff39bb5e | 17886 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 17887 | struct dwarf2_cu *cu) |
c906108c | 17888 | { |
bb5ed363 | 17889 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
17890 | struct type *this_type; |
17891 | ||
ac9ec31b DE |
17892 | gdb_assert (attr->name == DW_AT_type |
17893 | || attr->name == DW_AT_GNAT_descriptive_type | |
17894 | || attr->name == DW_AT_containing_type); | |
17895 | ||
673bfd45 DE |
17896 | /* First see if we have it cached. */ |
17897 | ||
36586728 TT |
17898 | if (attr->form == DW_FORM_GNU_ref_alt) |
17899 | { | |
17900 | struct dwarf2_per_cu_data *per_cu; | |
17901 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
17902 | ||
17903 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
17904 | this_type = get_die_type_at_offset (offset, per_cu); | |
17905 | } | |
7771576e | 17906 | else if (attr_form_is_ref (attr)) |
673bfd45 | 17907 | { |
b64f50a1 | 17908 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
17909 | |
17910 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
17911 | } | |
55f1336d | 17912 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 17913 | { |
ac9ec31b | 17914 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 17915 | |
ac9ec31b | 17916 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
17917 | } |
17918 | else | |
17919 | { | |
ac9ec31b DE |
17920 | complaint (&symfile_complaints, |
17921 | _("Dwarf Error: Bad type attribute %s in DIE" | |
17922 | " at 0x%x [in module %s]"), | |
17923 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 17924 | objfile_name (objfile)); |
ac9ec31b | 17925 | return build_error_marker_type (cu, die); |
673bfd45 DE |
17926 | } |
17927 | ||
17928 | /* If not cached we need to read it in. */ | |
17929 | ||
17930 | if (this_type == NULL) | |
17931 | { | |
ac9ec31b | 17932 | struct die_info *type_die = NULL; |
673bfd45 DE |
17933 | struct dwarf2_cu *type_cu = cu; |
17934 | ||
7771576e | 17935 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
17936 | type_die = follow_die_ref (die, attr, &type_cu); |
17937 | if (type_die == NULL) | |
17938 | return build_error_marker_type (cu, die); | |
17939 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
17940 | from an inter-CU reference and the type's CU got expanded before |
17941 | ours. */ | |
ac9ec31b | 17942 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
17943 | } |
17944 | ||
17945 | /* If we still don't have a type use an error marker. */ | |
17946 | ||
17947 | if (this_type == NULL) | |
ac9ec31b | 17948 | return build_error_marker_type (cu, die); |
673bfd45 | 17949 | |
f792889a | 17950 | return this_type; |
c906108c SS |
17951 | } |
17952 | ||
673bfd45 DE |
17953 | /* Return the type in DIE, CU. |
17954 | Returns NULL for invalid types. | |
17955 | ||
02142a6c | 17956 | This first does a lookup in die_type_hash, |
673bfd45 DE |
17957 | and only reads the die in if necessary. |
17958 | ||
17959 | NOTE: This can be called when reading in partial or full symbols. */ | |
17960 | ||
f792889a | 17961 | static struct type * |
e7c27a73 | 17962 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17963 | { |
f792889a DJ |
17964 | struct type *this_type; |
17965 | ||
17966 | this_type = get_die_type (die, cu); | |
17967 | if (this_type) | |
17968 | return this_type; | |
17969 | ||
673bfd45 DE |
17970 | return read_type_die_1 (die, cu); |
17971 | } | |
17972 | ||
17973 | /* Read the type in DIE, CU. | |
17974 | Returns NULL for invalid types. */ | |
17975 | ||
17976 | static struct type * | |
17977 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
17978 | { | |
17979 | struct type *this_type = NULL; | |
17980 | ||
c906108c SS |
17981 | switch (die->tag) |
17982 | { | |
17983 | case DW_TAG_class_type: | |
680b30c7 | 17984 | case DW_TAG_interface_type: |
c906108c SS |
17985 | case DW_TAG_structure_type: |
17986 | case DW_TAG_union_type: | |
f792889a | 17987 | this_type = read_structure_type (die, cu); |
c906108c SS |
17988 | break; |
17989 | case DW_TAG_enumeration_type: | |
f792889a | 17990 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
17991 | break; |
17992 | case DW_TAG_subprogram: | |
17993 | case DW_TAG_subroutine_type: | |
edb3359d | 17994 | case DW_TAG_inlined_subroutine: |
f792889a | 17995 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
17996 | break; |
17997 | case DW_TAG_array_type: | |
f792889a | 17998 | this_type = read_array_type (die, cu); |
c906108c | 17999 | break; |
72019c9c | 18000 | case DW_TAG_set_type: |
f792889a | 18001 | this_type = read_set_type (die, cu); |
72019c9c | 18002 | break; |
c906108c | 18003 | case DW_TAG_pointer_type: |
f792889a | 18004 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
18005 | break; |
18006 | case DW_TAG_ptr_to_member_type: | |
f792889a | 18007 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
18008 | break; |
18009 | case DW_TAG_reference_type: | |
f792889a | 18010 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
18011 | break; |
18012 | case DW_TAG_const_type: | |
f792889a | 18013 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
18014 | break; |
18015 | case DW_TAG_volatile_type: | |
f792889a | 18016 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 18017 | break; |
06d66ee9 TT |
18018 | case DW_TAG_restrict_type: |
18019 | this_type = read_tag_restrict_type (die, cu); | |
18020 | break; | |
c906108c | 18021 | case DW_TAG_string_type: |
f792889a | 18022 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
18023 | break; |
18024 | case DW_TAG_typedef: | |
f792889a | 18025 | this_type = read_typedef (die, cu); |
c906108c | 18026 | break; |
a02abb62 | 18027 | case DW_TAG_subrange_type: |
f792889a | 18028 | this_type = read_subrange_type (die, cu); |
a02abb62 | 18029 | break; |
c906108c | 18030 | case DW_TAG_base_type: |
f792889a | 18031 | this_type = read_base_type (die, cu); |
c906108c | 18032 | break; |
81a17f79 | 18033 | case DW_TAG_unspecified_type: |
f792889a | 18034 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 18035 | break; |
0114d602 DJ |
18036 | case DW_TAG_namespace: |
18037 | this_type = read_namespace_type (die, cu); | |
18038 | break; | |
f55ee35c JK |
18039 | case DW_TAG_module: |
18040 | this_type = read_module_type (die, cu); | |
18041 | break; | |
c906108c | 18042 | default: |
3e43a32a MS |
18043 | complaint (&symfile_complaints, |
18044 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 18045 | dwarf_tag_name (die->tag)); |
c906108c SS |
18046 | break; |
18047 | } | |
63d06c5c | 18048 | |
f792889a | 18049 | return this_type; |
63d06c5c DC |
18050 | } |
18051 | ||
abc72ce4 DE |
18052 | /* See if we can figure out if the class lives in a namespace. We do |
18053 | this by looking for a member function; its demangled name will | |
18054 | contain namespace info, if there is any. | |
18055 | Return the computed name or NULL. | |
18056 | Space for the result is allocated on the objfile's obstack. | |
18057 | This is the full-die version of guess_partial_die_structure_name. | |
18058 | In this case we know DIE has no useful parent. */ | |
18059 | ||
18060 | static char * | |
18061 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
18062 | { | |
18063 | struct die_info *spec_die; | |
18064 | struct dwarf2_cu *spec_cu; | |
18065 | struct die_info *child; | |
18066 | ||
18067 | spec_cu = cu; | |
18068 | spec_die = die_specification (die, &spec_cu); | |
18069 | if (spec_die != NULL) | |
18070 | { | |
18071 | die = spec_die; | |
18072 | cu = spec_cu; | |
18073 | } | |
18074 | ||
18075 | for (child = die->child; | |
18076 | child != NULL; | |
18077 | child = child->sibling) | |
18078 | { | |
18079 | if (child->tag == DW_TAG_subprogram) | |
18080 | { | |
18081 | struct attribute *attr; | |
18082 | ||
18083 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
18084 | if (attr == NULL) | |
18085 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
18086 | if (attr != NULL) | |
18087 | { | |
18088 | char *actual_name | |
18089 | = language_class_name_from_physname (cu->language_defn, | |
18090 | DW_STRING (attr)); | |
18091 | char *name = NULL; | |
18092 | ||
18093 | if (actual_name != NULL) | |
18094 | { | |
15d034d0 | 18095 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
18096 | |
18097 | if (die_name != NULL | |
18098 | && strcmp (die_name, actual_name) != 0) | |
18099 | { | |
18100 | /* Strip off the class name from the full name. | |
18101 | We want the prefix. */ | |
18102 | int die_name_len = strlen (die_name); | |
18103 | int actual_name_len = strlen (actual_name); | |
18104 | ||
18105 | /* Test for '::' as a sanity check. */ | |
18106 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
18107 | && actual_name[actual_name_len |
18108 | - die_name_len - 1] == ':') | |
abc72ce4 | 18109 | name = |
10f0c4bb TT |
18110 | obstack_copy0 (&cu->objfile->objfile_obstack, |
18111 | actual_name, | |
18112 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
18113 | } |
18114 | } | |
18115 | xfree (actual_name); | |
18116 | return name; | |
18117 | } | |
18118 | } | |
18119 | } | |
18120 | ||
18121 | return NULL; | |
18122 | } | |
18123 | ||
96408a79 SA |
18124 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
18125 | prefix part in such case. See | |
18126 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18127 | ||
18128 | static char * | |
18129 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
18130 | { | |
18131 | struct attribute *attr; | |
18132 | char *base; | |
18133 | ||
18134 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
18135 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
18136 | return NULL; | |
18137 | ||
18138 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
18139 | if (attr != NULL && DW_STRING (attr) != NULL) | |
18140 | return NULL; | |
18141 | ||
18142 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18143 | if (attr == NULL) | |
18144 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18145 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18146 | return NULL; | |
18147 | ||
18148 | /* dwarf2_name had to be already called. */ | |
18149 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
18150 | ||
18151 | /* Strip the base name, keep any leading namespaces/classes. */ | |
18152 | base = strrchr (DW_STRING (attr), ':'); | |
18153 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
18154 | return ""; | |
18155 | ||
10f0c4bb TT |
18156 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
18157 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
18158 | } |
18159 | ||
fdde2d81 | 18160 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 18161 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 18162 | |
0114d602 DJ |
18163 | For example, if we're within the method foo() in the following |
18164 | code: | |
18165 | ||
18166 | namespace N { | |
18167 | class C { | |
18168 | void foo () { | |
18169 | } | |
18170 | }; | |
18171 | } | |
18172 | ||
18173 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 18174 | |
0d5cff50 | 18175 | static const char * |
e142c38c | 18176 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 18177 | { |
0114d602 DJ |
18178 | struct die_info *parent, *spec_die; |
18179 | struct dwarf2_cu *spec_cu; | |
18180 | struct type *parent_type; | |
96408a79 | 18181 | char *retval; |
63d06c5c | 18182 | |
f55ee35c JK |
18183 | if (cu->language != language_cplus && cu->language != language_java |
18184 | && cu->language != language_fortran) | |
0114d602 DJ |
18185 | return ""; |
18186 | ||
96408a79 SA |
18187 | retval = anonymous_struct_prefix (die, cu); |
18188 | if (retval) | |
18189 | return retval; | |
18190 | ||
0114d602 DJ |
18191 | /* We have to be careful in the presence of DW_AT_specification. |
18192 | For example, with GCC 3.4, given the code | |
18193 | ||
18194 | namespace N { | |
18195 | void foo() { | |
18196 | // Definition of N::foo. | |
18197 | } | |
18198 | } | |
18199 | ||
18200 | then we'll have a tree of DIEs like this: | |
18201 | ||
18202 | 1: DW_TAG_compile_unit | |
18203 | 2: DW_TAG_namespace // N | |
18204 | 3: DW_TAG_subprogram // declaration of N::foo | |
18205 | 4: DW_TAG_subprogram // definition of N::foo | |
18206 | DW_AT_specification // refers to die #3 | |
18207 | ||
18208 | Thus, when processing die #4, we have to pretend that we're in | |
18209 | the context of its DW_AT_specification, namely the contex of die | |
18210 | #3. */ | |
18211 | spec_cu = cu; | |
18212 | spec_die = die_specification (die, &spec_cu); | |
18213 | if (spec_die == NULL) | |
18214 | parent = die->parent; | |
18215 | else | |
63d06c5c | 18216 | { |
0114d602 DJ |
18217 | parent = spec_die->parent; |
18218 | cu = spec_cu; | |
63d06c5c | 18219 | } |
0114d602 DJ |
18220 | |
18221 | if (parent == NULL) | |
18222 | return ""; | |
98bfdba5 PA |
18223 | else if (parent->building_fullname) |
18224 | { | |
18225 | const char *name; | |
18226 | const char *parent_name; | |
18227 | ||
18228 | /* It has been seen on RealView 2.2 built binaries, | |
18229 | DW_TAG_template_type_param types actually _defined_ as | |
18230 | children of the parent class: | |
18231 | ||
18232 | enum E {}; | |
18233 | template class <class Enum> Class{}; | |
18234 | Class<enum E> class_e; | |
18235 | ||
18236 | 1: DW_TAG_class_type (Class) | |
18237 | 2: DW_TAG_enumeration_type (E) | |
18238 | 3: DW_TAG_enumerator (enum1:0) | |
18239 | 3: DW_TAG_enumerator (enum2:1) | |
18240 | ... | |
18241 | 2: DW_TAG_template_type_param | |
18242 | DW_AT_type DW_FORM_ref_udata (E) | |
18243 | ||
18244 | Besides being broken debug info, it can put GDB into an | |
18245 | infinite loop. Consider: | |
18246 | ||
18247 | When we're building the full name for Class<E>, we'll start | |
18248 | at Class, and go look over its template type parameters, | |
18249 | finding E. We'll then try to build the full name of E, and | |
18250 | reach here. We're now trying to build the full name of E, | |
18251 | and look over the parent DIE for containing scope. In the | |
18252 | broken case, if we followed the parent DIE of E, we'd again | |
18253 | find Class, and once again go look at its template type | |
18254 | arguments, etc., etc. Simply don't consider such parent die | |
18255 | as source-level parent of this die (it can't be, the language | |
18256 | doesn't allow it), and break the loop here. */ | |
18257 | name = dwarf2_name (die, cu); | |
18258 | parent_name = dwarf2_name (parent, cu); | |
18259 | complaint (&symfile_complaints, | |
18260 | _("template param type '%s' defined within parent '%s'"), | |
18261 | name ? name : "<unknown>", | |
18262 | parent_name ? parent_name : "<unknown>"); | |
18263 | return ""; | |
18264 | } | |
63d06c5c | 18265 | else |
0114d602 DJ |
18266 | switch (parent->tag) |
18267 | { | |
63d06c5c | 18268 | case DW_TAG_namespace: |
0114d602 | 18269 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
18270 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
18271 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
18272 | Work around this problem here. */ | |
18273 | if (cu->language == language_cplus | |
18274 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
18275 | return ""; | |
0114d602 DJ |
18276 | /* We give a name to even anonymous namespaces. */ |
18277 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 18278 | case DW_TAG_class_type: |
680b30c7 | 18279 | case DW_TAG_interface_type: |
63d06c5c | 18280 | case DW_TAG_structure_type: |
0114d602 | 18281 | case DW_TAG_union_type: |
f55ee35c | 18282 | case DW_TAG_module: |
0114d602 DJ |
18283 | parent_type = read_type_die (parent, cu); |
18284 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
18285 | return TYPE_TAG_NAME (parent_type); | |
18286 | else | |
18287 | /* An anonymous structure is only allowed non-static data | |
18288 | members; no typedefs, no member functions, et cetera. | |
18289 | So it does not need a prefix. */ | |
18290 | return ""; | |
abc72ce4 | 18291 | case DW_TAG_compile_unit: |
95554aad | 18292 | case DW_TAG_partial_unit: |
abc72ce4 DE |
18293 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
18294 | if (cu->language == language_cplus | |
8b70b953 | 18295 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
18296 | && die->child != NULL |
18297 | && (die->tag == DW_TAG_class_type | |
18298 | || die->tag == DW_TAG_structure_type | |
18299 | || die->tag == DW_TAG_union_type)) | |
18300 | { | |
18301 | char *name = guess_full_die_structure_name (die, cu); | |
18302 | if (name != NULL) | |
18303 | return name; | |
18304 | } | |
18305 | return ""; | |
63d06c5c | 18306 | default: |
8176b9b8 | 18307 | return determine_prefix (parent, cu); |
63d06c5c | 18308 | } |
63d06c5c DC |
18309 | } |
18310 | ||
3e43a32a MS |
18311 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
18312 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
18313 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
18314 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
18315 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 18316 | |
f55ee35c | 18317 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
18318 | |
18319 | static char * | |
f55ee35c JK |
18320 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
18321 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 18322 | { |
f55ee35c | 18323 | const char *lead = ""; |
5c315b68 | 18324 | const char *sep; |
63d06c5c | 18325 | |
3e43a32a MS |
18326 | if (suffix == NULL || suffix[0] == '\0' |
18327 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
18328 | sep = ""; |
18329 | else if (cu->language == language_java) | |
18330 | sep = "."; | |
f55ee35c JK |
18331 | else if (cu->language == language_fortran && physname) |
18332 | { | |
18333 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
18334 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
18335 | ||
18336 | lead = "__"; | |
18337 | sep = "_MOD_"; | |
18338 | } | |
987504bb JJ |
18339 | else |
18340 | sep = "::"; | |
63d06c5c | 18341 | |
6dd47d34 DE |
18342 | if (prefix == NULL) |
18343 | prefix = ""; | |
18344 | if (suffix == NULL) | |
18345 | suffix = ""; | |
18346 | ||
987504bb JJ |
18347 | if (obs == NULL) |
18348 | { | |
3e43a32a MS |
18349 | char *retval |
18350 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 18351 | |
f55ee35c JK |
18352 | strcpy (retval, lead); |
18353 | strcat (retval, prefix); | |
6dd47d34 DE |
18354 | strcat (retval, sep); |
18355 | strcat (retval, suffix); | |
63d06c5c DC |
18356 | return retval; |
18357 | } | |
987504bb JJ |
18358 | else |
18359 | { | |
18360 | /* We have an obstack. */ | |
f55ee35c | 18361 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 18362 | } |
63d06c5c DC |
18363 | } |
18364 | ||
c906108c SS |
18365 | /* Return sibling of die, NULL if no sibling. */ |
18366 | ||
f9aca02d | 18367 | static struct die_info * |
fba45db2 | 18368 | sibling_die (struct die_info *die) |
c906108c | 18369 | { |
639d11d3 | 18370 | return die->sibling; |
c906108c SS |
18371 | } |
18372 | ||
71c25dea TT |
18373 | /* Get name of a die, return NULL if not found. */ |
18374 | ||
15d034d0 TT |
18375 | static const char * |
18376 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
18377 | struct obstack *obstack) |
18378 | { | |
18379 | if (name && cu->language == language_cplus) | |
18380 | { | |
18381 | char *canon_name = cp_canonicalize_string (name); | |
18382 | ||
18383 | if (canon_name != NULL) | |
18384 | { | |
18385 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 18386 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
18387 | xfree (canon_name); |
18388 | } | |
18389 | } | |
18390 | ||
18391 | return name; | |
c906108c SS |
18392 | } |
18393 | ||
9219021c DC |
18394 | /* Get name of a die, return NULL if not found. */ |
18395 | ||
15d034d0 | 18396 | static const char * |
e142c38c | 18397 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
18398 | { |
18399 | struct attribute *attr; | |
18400 | ||
e142c38c | 18401 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
18402 | if ((!attr || !DW_STRING (attr)) |
18403 | && die->tag != DW_TAG_class_type | |
18404 | && die->tag != DW_TAG_interface_type | |
18405 | && die->tag != DW_TAG_structure_type | |
18406 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
18407 | return NULL; |
18408 | ||
18409 | switch (die->tag) | |
18410 | { | |
18411 | case DW_TAG_compile_unit: | |
95554aad | 18412 | case DW_TAG_partial_unit: |
71c25dea TT |
18413 | /* Compilation units have a DW_AT_name that is a filename, not |
18414 | a source language identifier. */ | |
18415 | case DW_TAG_enumeration_type: | |
18416 | case DW_TAG_enumerator: | |
18417 | /* These tags always have simple identifiers already; no need | |
18418 | to canonicalize them. */ | |
18419 | return DW_STRING (attr); | |
907af001 | 18420 | |
418835cc KS |
18421 | case DW_TAG_subprogram: |
18422 | /* Java constructors will all be named "<init>", so return | |
18423 | the class name when we see this special case. */ | |
18424 | if (cu->language == language_java | |
18425 | && DW_STRING (attr) != NULL | |
18426 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
18427 | { | |
18428 | struct dwarf2_cu *spec_cu = cu; | |
18429 | struct die_info *spec_die; | |
18430 | ||
18431 | /* GCJ will output '<init>' for Java constructor names. | |
18432 | For this special case, return the name of the parent class. */ | |
18433 | ||
18434 | /* GCJ may output suprogram DIEs with AT_specification set. | |
18435 | If so, use the name of the specified DIE. */ | |
18436 | spec_die = die_specification (die, &spec_cu); | |
18437 | if (spec_die != NULL) | |
18438 | return dwarf2_name (spec_die, spec_cu); | |
18439 | ||
18440 | do | |
18441 | { | |
18442 | die = die->parent; | |
18443 | if (die->tag == DW_TAG_class_type) | |
18444 | return dwarf2_name (die, cu); | |
18445 | } | |
95554aad TT |
18446 | while (die->tag != DW_TAG_compile_unit |
18447 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 18448 | } |
907af001 UW |
18449 | break; |
18450 | ||
18451 | case DW_TAG_class_type: | |
18452 | case DW_TAG_interface_type: | |
18453 | case DW_TAG_structure_type: | |
18454 | case DW_TAG_union_type: | |
18455 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
18456 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
18457 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
18458 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
18459 | if (attr && DW_STRING (attr) |
18460 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
18461 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 18462 | return NULL; |
53832f31 TT |
18463 | |
18464 | /* GCC might emit a nameless typedef that has a linkage name. See | |
18465 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18466 | if (!attr || DW_STRING (attr) == NULL) | |
18467 | { | |
df5c6c50 | 18468 | char *demangled = NULL; |
53832f31 TT |
18469 | |
18470 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18471 | if (attr == NULL) | |
18472 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18473 | ||
18474 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18475 | return NULL; | |
18476 | ||
df5c6c50 JK |
18477 | /* Avoid demangling DW_STRING (attr) the second time on a second |
18478 | call for the same DIE. */ | |
18479 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 18480 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
18481 | |
18482 | if (demangled) | |
18483 | { | |
96408a79 SA |
18484 | char *base; |
18485 | ||
53832f31 | 18486 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
18487 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
18488 | demangled, strlen (demangled)); | |
53832f31 TT |
18489 | DW_STRING_IS_CANONICAL (attr) = 1; |
18490 | xfree (demangled); | |
96408a79 SA |
18491 | |
18492 | /* Strip any leading namespaces/classes, keep only the base name. | |
18493 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18494 | base = strrchr (DW_STRING (attr), ':'); | |
18495 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
18496 | return &base[1]; | |
18497 | else | |
18498 | return DW_STRING (attr); | |
53832f31 TT |
18499 | } |
18500 | } | |
907af001 UW |
18501 | break; |
18502 | ||
71c25dea | 18503 | default: |
907af001 UW |
18504 | break; |
18505 | } | |
18506 | ||
18507 | if (!DW_STRING_IS_CANONICAL (attr)) | |
18508 | { | |
18509 | DW_STRING (attr) | |
18510 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
18511 | &cu->objfile->objfile_obstack); | |
18512 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 18513 | } |
907af001 | 18514 | return DW_STRING (attr); |
9219021c DC |
18515 | } |
18516 | ||
18517 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
18518 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
18519 | containing the return value on output. */ | |
9219021c DC |
18520 | |
18521 | static struct die_info * | |
f2f0e013 | 18522 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
18523 | { |
18524 | struct attribute *attr; | |
9219021c | 18525 | |
f2f0e013 | 18526 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
18527 | if (attr == NULL) |
18528 | return NULL; | |
18529 | ||
f2f0e013 | 18530 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
18531 | } |
18532 | ||
c906108c SS |
18533 | /* Convert a DIE tag into its string name. */ |
18534 | ||
f39c6ffd | 18535 | static const char * |
aa1ee363 | 18536 | dwarf_tag_name (unsigned tag) |
c906108c | 18537 | { |
f39c6ffd TT |
18538 | const char *name = get_DW_TAG_name (tag); |
18539 | ||
18540 | if (name == NULL) | |
18541 | return "DW_TAG_<unknown>"; | |
18542 | ||
18543 | return name; | |
c906108c SS |
18544 | } |
18545 | ||
18546 | /* Convert a DWARF attribute code into its string name. */ | |
18547 | ||
f39c6ffd | 18548 | static const char * |
aa1ee363 | 18549 | dwarf_attr_name (unsigned attr) |
c906108c | 18550 | { |
f39c6ffd TT |
18551 | const char *name; |
18552 | ||
c764a876 | 18553 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
18554 | if (attr == DW_AT_MIPS_fde) |
18555 | return "DW_AT_MIPS_fde"; | |
18556 | #else | |
18557 | if (attr == DW_AT_HP_block_index) | |
18558 | return "DW_AT_HP_block_index"; | |
c764a876 | 18559 | #endif |
f39c6ffd TT |
18560 | |
18561 | name = get_DW_AT_name (attr); | |
18562 | ||
18563 | if (name == NULL) | |
18564 | return "DW_AT_<unknown>"; | |
18565 | ||
18566 | return name; | |
c906108c SS |
18567 | } |
18568 | ||
18569 | /* Convert a DWARF value form code into its string name. */ | |
18570 | ||
f39c6ffd | 18571 | static const char * |
aa1ee363 | 18572 | dwarf_form_name (unsigned form) |
c906108c | 18573 | { |
f39c6ffd TT |
18574 | const char *name = get_DW_FORM_name (form); |
18575 | ||
18576 | if (name == NULL) | |
18577 | return "DW_FORM_<unknown>"; | |
18578 | ||
18579 | return name; | |
c906108c SS |
18580 | } |
18581 | ||
18582 | static char * | |
fba45db2 | 18583 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
18584 | { |
18585 | if (mybool) | |
18586 | return "TRUE"; | |
18587 | else | |
18588 | return "FALSE"; | |
18589 | } | |
18590 | ||
18591 | /* Convert a DWARF type code into its string name. */ | |
18592 | ||
f39c6ffd | 18593 | static const char * |
aa1ee363 | 18594 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 18595 | { |
f39c6ffd | 18596 | const char *name = get_DW_ATE_name (enc); |
c906108c | 18597 | |
f39c6ffd TT |
18598 | if (name == NULL) |
18599 | return "DW_ATE_<unknown>"; | |
c906108c | 18600 | |
f39c6ffd | 18601 | return name; |
c906108c | 18602 | } |
c906108c | 18603 | |
f9aca02d | 18604 | static void |
d97bc12b | 18605 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
18606 | { |
18607 | unsigned int i; | |
18608 | ||
d97bc12b DE |
18609 | print_spaces (indent, f); |
18610 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 18611 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
18612 | |
18613 | if (die->parent != NULL) | |
18614 | { | |
18615 | print_spaces (indent, f); | |
18616 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 18617 | die->parent->offset.sect_off); |
d97bc12b DE |
18618 | } |
18619 | ||
18620 | print_spaces (indent, f); | |
18621 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 18622 | dwarf_bool_name (die->child != NULL)); |
c906108c | 18623 | |
d97bc12b DE |
18624 | print_spaces (indent, f); |
18625 | fprintf_unfiltered (f, " attributes:\n"); | |
18626 | ||
c906108c SS |
18627 | for (i = 0; i < die->num_attrs; ++i) |
18628 | { | |
d97bc12b DE |
18629 | print_spaces (indent, f); |
18630 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
18631 | dwarf_attr_name (die->attrs[i].name), |
18632 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 18633 | |
c906108c SS |
18634 | switch (die->attrs[i].form) |
18635 | { | |
c906108c | 18636 | case DW_FORM_addr: |
3019eac3 | 18637 | case DW_FORM_GNU_addr_index: |
d97bc12b | 18638 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 18639 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
18640 | break; |
18641 | case DW_FORM_block2: | |
18642 | case DW_FORM_block4: | |
18643 | case DW_FORM_block: | |
18644 | case DW_FORM_block1: | |
56eb65bd SP |
18645 | fprintf_unfiltered (f, "block: size %s", |
18646 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 18647 | break; |
2dc7f7b3 | 18648 | case DW_FORM_exprloc: |
56eb65bd SP |
18649 | fprintf_unfiltered (f, "expression: size %s", |
18650 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 18651 | break; |
4568ecf9 DE |
18652 | case DW_FORM_ref_addr: |
18653 | fprintf_unfiltered (f, "ref address: "); | |
18654 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18655 | break; | |
36586728 TT |
18656 | case DW_FORM_GNU_ref_alt: |
18657 | fprintf_unfiltered (f, "alt ref address: "); | |
18658 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18659 | break; | |
10b3939b DJ |
18660 | case DW_FORM_ref1: |
18661 | case DW_FORM_ref2: | |
18662 | case DW_FORM_ref4: | |
4568ecf9 DE |
18663 | case DW_FORM_ref8: |
18664 | case DW_FORM_ref_udata: | |
d97bc12b | 18665 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 18666 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 18667 | break; |
c906108c SS |
18668 | case DW_FORM_data1: |
18669 | case DW_FORM_data2: | |
18670 | case DW_FORM_data4: | |
ce5d95e1 | 18671 | case DW_FORM_data8: |
c906108c SS |
18672 | case DW_FORM_udata: |
18673 | case DW_FORM_sdata: | |
43bbcdc2 PH |
18674 | fprintf_unfiltered (f, "constant: %s", |
18675 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 18676 | break; |
2dc7f7b3 TT |
18677 | case DW_FORM_sec_offset: |
18678 | fprintf_unfiltered (f, "section offset: %s", | |
18679 | pulongest (DW_UNSND (&die->attrs[i]))); | |
18680 | break; | |
55f1336d | 18681 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
18682 | fprintf_unfiltered (f, "signature: %s", |
18683 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 18684 | break; |
c906108c | 18685 | case DW_FORM_string: |
4bdf3d34 | 18686 | case DW_FORM_strp: |
3019eac3 | 18687 | case DW_FORM_GNU_str_index: |
36586728 | 18688 | case DW_FORM_GNU_strp_alt: |
8285870a | 18689 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 18690 | DW_STRING (&die->attrs[i]) |
8285870a JK |
18691 | ? DW_STRING (&die->attrs[i]) : "", |
18692 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
18693 | break; |
18694 | case DW_FORM_flag: | |
18695 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 18696 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 18697 | else |
d97bc12b | 18698 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 18699 | break; |
2dc7f7b3 TT |
18700 | case DW_FORM_flag_present: |
18701 | fprintf_unfiltered (f, "flag: TRUE"); | |
18702 | break; | |
a8329558 | 18703 | case DW_FORM_indirect: |
0963b4bd MS |
18704 | /* The reader will have reduced the indirect form to |
18705 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
18706 | fprintf_unfiltered (f, |
18707 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 18708 | break; |
c906108c | 18709 | default: |
d97bc12b | 18710 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 18711 | die->attrs[i].form); |
d97bc12b | 18712 | break; |
c906108c | 18713 | } |
d97bc12b | 18714 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
18715 | } |
18716 | } | |
18717 | ||
f9aca02d | 18718 | static void |
d97bc12b | 18719 | dump_die_for_error (struct die_info *die) |
c906108c | 18720 | { |
d97bc12b DE |
18721 | dump_die_shallow (gdb_stderr, 0, die); |
18722 | } | |
18723 | ||
18724 | static void | |
18725 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
18726 | { | |
18727 | int indent = level * 4; | |
18728 | ||
18729 | gdb_assert (die != NULL); | |
18730 | ||
18731 | if (level >= max_level) | |
18732 | return; | |
18733 | ||
18734 | dump_die_shallow (f, indent, die); | |
18735 | ||
18736 | if (die->child != NULL) | |
c906108c | 18737 | { |
d97bc12b DE |
18738 | print_spaces (indent, f); |
18739 | fprintf_unfiltered (f, " Children:"); | |
18740 | if (level + 1 < max_level) | |
18741 | { | |
18742 | fprintf_unfiltered (f, "\n"); | |
18743 | dump_die_1 (f, level + 1, max_level, die->child); | |
18744 | } | |
18745 | else | |
18746 | { | |
3e43a32a MS |
18747 | fprintf_unfiltered (f, |
18748 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
18749 | } |
18750 | } | |
18751 | ||
18752 | if (die->sibling != NULL && level > 0) | |
18753 | { | |
18754 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
18755 | } |
18756 | } | |
18757 | ||
d97bc12b DE |
18758 | /* This is called from the pdie macro in gdbinit.in. |
18759 | It's not static so gcc will keep a copy callable from gdb. */ | |
18760 | ||
18761 | void | |
18762 | dump_die (struct die_info *die, int max_level) | |
18763 | { | |
18764 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
18765 | } | |
18766 | ||
f9aca02d | 18767 | static void |
51545339 | 18768 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18769 | { |
51545339 | 18770 | void **slot; |
c906108c | 18771 | |
b64f50a1 JK |
18772 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
18773 | INSERT); | |
51545339 DJ |
18774 | |
18775 | *slot = die; | |
c906108c SS |
18776 | } |
18777 | ||
b64f50a1 JK |
18778 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
18779 | required kind. */ | |
18780 | ||
18781 | static sect_offset | |
ff39bb5e | 18782 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 18783 | { |
4568ecf9 | 18784 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 18785 | |
7771576e | 18786 | if (attr_form_is_ref (attr)) |
b64f50a1 | 18787 | return retval; |
93311388 | 18788 | |
b64f50a1 | 18789 | retval.sect_off = 0; |
93311388 DE |
18790 | complaint (&symfile_complaints, |
18791 | _("unsupported die ref attribute form: '%s'"), | |
18792 | dwarf_form_name (attr->form)); | |
b64f50a1 | 18793 | return retval; |
c906108c SS |
18794 | } |
18795 | ||
43bbcdc2 PH |
18796 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
18797 | * the value held by the attribute is not constant. */ | |
a02abb62 | 18798 | |
43bbcdc2 | 18799 | static LONGEST |
ff39bb5e | 18800 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
18801 | { |
18802 | if (attr->form == DW_FORM_sdata) | |
18803 | return DW_SND (attr); | |
18804 | else if (attr->form == DW_FORM_udata | |
18805 | || attr->form == DW_FORM_data1 | |
18806 | || attr->form == DW_FORM_data2 | |
18807 | || attr->form == DW_FORM_data4 | |
18808 | || attr->form == DW_FORM_data8) | |
18809 | return DW_UNSND (attr); | |
18810 | else | |
18811 | { | |
3e43a32a MS |
18812 | complaint (&symfile_complaints, |
18813 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
18814 | dwarf_form_name (attr->form)); |
18815 | return default_value; | |
18816 | } | |
18817 | } | |
18818 | ||
348e048f DE |
18819 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
18820 | On entry *REF_CU is the CU of SRC_DIE. | |
18821 | On exit *REF_CU is the CU of the result. */ | |
18822 | ||
18823 | static struct die_info * | |
ff39bb5e | 18824 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
18825 | struct dwarf2_cu **ref_cu) |
18826 | { | |
18827 | struct die_info *die; | |
18828 | ||
7771576e | 18829 | if (attr_form_is_ref (attr)) |
348e048f | 18830 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 18831 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
18832 | die = follow_die_sig (src_die, attr, ref_cu); |
18833 | else | |
18834 | { | |
18835 | dump_die_for_error (src_die); | |
18836 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 18837 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
18838 | } |
18839 | ||
18840 | return die; | |
03dd20cc DJ |
18841 | } |
18842 | ||
5c631832 | 18843 | /* Follow reference OFFSET. |
673bfd45 DE |
18844 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
18845 | On exit *REF_CU is the CU of the result. | |
18846 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 18847 | |
f9aca02d | 18848 | static struct die_info * |
36586728 TT |
18849 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
18850 | struct dwarf2_cu **ref_cu) | |
c906108c | 18851 | { |
10b3939b | 18852 | struct die_info temp_die; |
f2f0e013 | 18853 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 18854 | |
348e048f DE |
18855 | gdb_assert (cu->per_cu != NULL); |
18856 | ||
98bfdba5 PA |
18857 | target_cu = cu; |
18858 | ||
3019eac3 | 18859 | if (cu->per_cu->is_debug_types) |
348e048f DE |
18860 | { |
18861 | /* .debug_types CUs cannot reference anything outside their CU. | |
18862 | If they need to, they have to reference a signatured type via | |
55f1336d | 18863 | DW_FORM_ref_sig8. */ |
348e048f | 18864 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 18865 | return NULL; |
348e048f | 18866 | } |
36586728 TT |
18867 | else if (offset_in_dwz != cu->per_cu->is_dwz |
18868 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
18869 | { |
18870 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 18871 | |
36586728 TT |
18872 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
18873 | cu->objfile); | |
03dd20cc DJ |
18874 | |
18875 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
18876 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
18877 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 18878 | |
10b3939b DJ |
18879 | target_cu = per_cu->cu; |
18880 | } | |
98bfdba5 PA |
18881 | else if (cu->dies == NULL) |
18882 | { | |
18883 | /* We're loading full DIEs during partial symbol reading. */ | |
18884 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 18885 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 18886 | } |
c906108c | 18887 | |
f2f0e013 | 18888 | *ref_cu = target_cu; |
51545339 | 18889 | temp_die.offset = offset; |
b64f50a1 | 18890 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 18891 | } |
10b3939b | 18892 | |
5c631832 JK |
18893 | /* Follow reference attribute ATTR of SRC_DIE. |
18894 | On entry *REF_CU is the CU of SRC_DIE. | |
18895 | On exit *REF_CU is the CU of the result. */ | |
18896 | ||
18897 | static struct die_info * | |
ff39bb5e | 18898 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
18899 | struct dwarf2_cu **ref_cu) |
18900 | { | |
b64f50a1 | 18901 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
18902 | struct dwarf2_cu *cu = *ref_cu; |
18903 | struct die_info *die; | |
18904 | ||
36586728 TT |
18905 | die = follow_die_offset (offset, |
18906 | (attr->form == DW_FORM_GNU_ref_alt | |
18907 | || cu->per_cu->is_dwz), | |
18908 | ref_cu); | |
5c631832 JK |
18909 | if (!die) |
18910 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
18911 | "at 0x%x [in module %s]"), | |
4262abfb JK |
18912 | offset.sect_off, src_die->offset.sect_off, |
18913 | objfile_name (cu->objfile)); | |
348e048f | 18914 | |
5c631832 JK |
18915 | return die; |
18916 | } | |
18917 | ||
d83e736b JK |
18918 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
18919 | Returned value is intended for DW_OP_call*. Returned | |
18920 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
18921 | |
18922 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
18923 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
18924 | struct dwarf2_per_cu_data *per_cu, | |
18925 | CORE_ADDR (*get_frame_pc) (void *baton), | |
18926 | void *baton) | |
5c631832 | 18927 | { |
918dd910 | 18928 | struct dwarf2_cu *cu; |
5c631832 JK |
18929 | struct die_info *die; |
18930 | struct attribute *attr; | |
18931 | struct dwarf2_locexpr_baton retval; | |
18932 | ||
8cf6f0b1 TT |
18933 | dw2_setup (per_cu->objfile); |
18934 | ||
918dd910 JK |
18935 | if (per_cu->cu == NULL) |
18936 | load_cu (per_cu); | |
18937 | cu = per_cu->cu; | |
18938 | ||
36586728 | 18939 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
18940 | if (!die) |
18941 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 18942 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
18943 | |
18944 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
18945 | if (!attr) | |
18946 | { | |
e103e986 JK |
18947 | /* DWARF: "If there is no such attribute, then there is no effect.". |
18948 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 18949 | |
e103e986 | 18950 | retval.data = NULL; |
5c631832 JK |
18951 | retval.size = 0; |
18952 | } | |
8cf6f0b1 TT |
18953 | else if (attr_form_is_section_offset (attr)) |
18954 | { | |
18955 | struct dwarf2_loclist_baton loclist_baton; | |
18956 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
18957 | size_t size; | |
18958 | ||
18959 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
18960 | ||
18961 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
18962 | &size, pc); | |
18963 | retval.size = size; | |
18964 | } | |
5c631832 JK |
18965 | else |
18966 | { | |
18967 | if (!attr_form_is_block (attr)) | |
18968 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
18969 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 18970 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
18971 | |
18972 | retval.data = DW_BLOCK (attr)->data; | |
18973 | retval.size = DW_BLOCK (attr)->size; | |
18974 | } | |
18975 | retval.per_cu = cu->per_cu; | |
918dd910 | 18976 | |
918dd910 JK |
18977 | age_cached_comp_units (); |
18978 | ||
5c631832 | 18979 | return retval; |
348e048f DE |
18980 | } |
18981 | ||
8b9737bf TT |
18982 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
18983 | offset. */ | |
18984 | ||
18985 | struct dwarf2_locexpr_baton | |
18986 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
18987 | struct dwarf2_per_cu_data *per_cu, | |
18988 | CORE_ADDR (*get_frame_pc) (void *baton), | |
18989 | void *baton) | |
18990 | { | |
18991 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
18992 | ||
18993 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
18994 | } | |
18995 | ||
b6807d98 TT |
18996 | /* Write a constant of a given type as target-ordered bytes into |
18997 | OBSTACK. */ | |
18998 | ||
18999 | static const gdb_byte * | |
19000 | write_constant_as_bytes (struct obstack *obstack, | |
19001 | enum bfd_endian byte_order, | |
19002 | struct type *type, | |
19003 | ULONGEST value, | |
19004 | LONGEST *len) | |
19005 | { | |
19006 | gdb_byte *result; | |
19007 | ||
19008 | *len = TYPE_LENGTH (type); | |
19009 | result = obstack_alloc (obstack, *len); | |
19010 | store_unsigned_integer (result, *len, byte_order, value); | |
19011 | ||
19012 | return result; | |
19013 | } | |
19014 | ||
19015 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
19016 | pointer to the constant bytes and set LEN to the length of the | |
19017 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
19018 | does not have a DW_AT_const_value, return NULL. */ | |
19019 | ||
19020 | const gdb_byte * | |
19021 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
19022 | struct dwarf2_per_cu_data *per_cu, | |
19023 | struct obstack *obstack, | |
19024 | LONGEST *len) | |
19025 | { | |
19026 | struct dwarf2_cu *cu; | |
19027 | struct die_info *die; | |
19028 | struct attribute *attr; | |
19029 | const gdb_byte *result = NULL; | |
19030 | struct type *type; | |
19031 | LONGEST value; | |
19032 | enum bfd_endian byte_order; | |
19033 | ||
19034 | dw2_setup (per_cu->objfile); | |
19035 | ||
19036 | if (per_cu->cu == NULL) | |
19037 | load_cu (per_cu); | |
19038 | cu = per_cu->cu; | |
19039 | ||
19040 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
19041 | if (!die) | |
19042 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19043 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
19044 | |
19045 | ||
19046 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
19047 | if (attr == NULL) | |
19048 | return NULL; | |
19049 | ||
19050 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
19051 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19052 | ||
19053 | switch (attr->form) | |
19054 | { | |
19055 | case DW_FORM_addr: | |
19056 | case DW_FORM_GNU_addr_index: | |
19057 | { | |
19058 | gdb_byte *tem; | |
19059 | ||
19060 | *len = cu->header.addr_size; | |
19061 | tem = obstack_alloc (obstack, *len); | |
19062 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
19063 | result = tem; | |
19064 | } | |
19065 | break; | |
19066 | case DW_FORM_string: | |
19067 | case DW_FORM_strp: | |
19068 | case DW_FORM_GNU_str_index: | |
19069 | case DW_FORM_GNU_strp_alt: | |
19070 | /* DW_STRING is already allocated on the objfile obstack, point | |
19071 | directly to it. */ | |
19072 | result = (const gdb_byte *) DW_STRING (attr); | |
19073 | *len = strlen (DW_STRING (attr)); | |
19074 | break; | |
19075 | case DW_FORM_block1: | |
19076 | case DW_FORM_block2: | |
19077 | case DW_FORM_block4: | |
19078 | case DW_FORM_block: | |
19079 | case DW_FORM_exprloc: | |
19080 | result = DW_BLOCK (attr)->data; | |
19081 | *len = DW_BLOCK (attr)->size; | |
19082 | break; | |
19083 | ||
19084 | /* The DW_AT_const_value attributes are supposed to carry the | |
19085 | symbol's value "represented as it would be on the target | |
19086 | architecture." By the time we get here, it's already been | |
19087 | converted to host endianness, so we just need to sign- or | |
19088 | zero-extend it as appropriate. */ | |
19089 | case DW_FORM_data1: | |
19090 | type = die_type (die, cu); | |
19091 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
19092 | if (result == NULL) | |
19093 | result = write_constant_as_bytes (obstack, byte_order, | |
19094 | type, value, len); | |
19095 | break; | |
19096 | case DW_FORM_data2: | |
19097 | type = die_type (die, cu); | |
19098 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
19099 | if (result == NULL) | |
19100 | result = write_constant_as_bytes (obstack, byte_order, | |
19101 | type, value, len); | |
19102 | break; | |
19103 | case DW_FORM_data4: | |
19104 | type = die_type (die, cu); | |
19105 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
19106 | if (result == NULL) | |
19107 | result = write_constant_as_bytes (obstack, byte_order, | |
19108 | type, value, len); | |
19109 | break; | |
19110 | case DW_FORM_data8: | |
19111 | type = die_type (die, cu); | |
19112 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
19113 | if (result == NULL) | |
19114 | result = write_constant_as_bytes (obstack, byte_order, | |
19115 | type, value, len); | |
19116 | break; | |
19117 | ||
19118 | case DW_FORM_sdata: | |
19119 | type = die_type (die, cu); | |
19120 | result = write_constant_as_bytes (obstack, byte_order, | |
19121 | type, DW_SND (attr), len); | |
19122 | break; | |
19123 | ||
19124 | case DW_FORM_udata: | |
19125 | type = die_type (die, cu); | |
19126 | result = write_constant_as_bytes (obstack, byte_order, | |
19127 | type, DW_UNSND (attr), len); | |
19128 | break; | |
19129 | ||
19130 | default: | |
19131 | complaint (&symfile_complaints, | |
19132 | _("unsupported const value attribute form: '%s'"), | |
19133 | dwarf_form_name (attr->form)); | |
19134 | break; | |
19135 | } | |
19136 | ||
19137 | return result; | |
19138 | } | |
19139 | ||
8a9b8146 TT |
19140 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
19141 | PER_CU. */ | |
19142 | ||
19143 | struct type * | |
b64f50a1 | 19144 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
19145 | struct dwarf2_per_cu_data *per_cu) |
19146 | { | |
b64f50a1 JK |
19147 | sect_offset die_offset_sect; |
19148 | ||
8a9b8146 | 19149 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
19150 | |
19151 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
19152 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
19153 | } |
19154 | ||
ac9ec31b | 19155 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 19156 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
19157 | On exit *REF_CU is the CU of the result. |
19158 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
19159 | |
19160 | static struct die_info * | |
ac9ec31b DE |
19161 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
19162 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
19163 | { |
19164 | struct objfile *objfile = (*ref_cu)->objfile; | |
19165 | struct die_info temp_die; | |
348e048f DE |
19166 | struct dwarf2_cu *sig_cu; |
19167 | struct die_info *die; | |
19168 | ||
ac9ec31b DE |
19169 | /* While it might be nice to assert sig_type->type == NULL here, |
19170 | we can get here for DW_AT_imported_declaration where we need | |
19171 | the DIE not the type. */ | |
348e048f DE |
19172 | |
19173 | /* If necessary, add it to the queue and load its DIEs. */ | |
19174 | ||
95554aad | 19175 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 19176 | read_signatured_type (sig_type); |
348e048f | 19177 | |
348e048f | 19178 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 19179 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
19180 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
19181 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
19182 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
19183 | temp_die.offset.sect_off); | |
348e048f DE |
19184 | if (die) |
19185 | { | |
796a7ff8 DE |
19186 | /* For .gdb_index version 7 keep track of included TUs. |
19187 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
19188 | if (dwarf2_per_objfile->index_table != NULL | |
19189 | && dwarf2_per_objfile->index_table->version <= 7) | |
19190 | { | |
19191 | VEC_safe_push (dwarf2_per_cu_ptr, | |
19192 | (*ref_cu)->per_cu->imported_symtabs, | |
19193 | sig_cu->per_cu); | |
19194 | } | |
19195 | ||
348e048f DE |
19196 | *ref_cu = sig_cu; |
19197 | return die; | |
19198 | } | |
19199 | ||
ac9ec31b DE |
19200 | return NULL; |
19201 | } | |
19202 | ||
19203 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
19204 | On entry *REF_CU is the CU of SRC_DIE. | |
19205 | On exit *REF_CU is the CU of the result. | |
19206 | The result is the DIE of the type. | |
19207 | If the referenced type cannot be found an error is thrown. */ | |
19208 | ||
19209 | static struct die_info * | |
ff39bb5e | 19210 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
19211 | struct dwarf2_cu **ref_cu) |
19212 | { | |
19213 | ULONGEST signature = DW_SIGNATURE (attr); | |
19214 | struct signatured_type *sig_type; | |
19215 | struct die_info *die; | |
19216 | ||
19217 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
19218 | ||
a2ce51a0 | 19219 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
19220 | /* sig_type will be NULL if the signatured type is missing from |
19221 | the debug info. */ | |
19222 | if (sig_type == NULL) | |
19223 | { | |
19224 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19225 | " from DIE at 0x%x [in module %s]"), | |
19226 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19227 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19228 | } |
19229 | ||
19230 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
19231 | if (die == NULL) | |
19232 | { | |
19233 | dump_die_for_error (src_die); | |
19234 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19235 | " from DIE at 0x%x [in module %s]"), | |
19236 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19237 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19238 | } |
19239 | ||
19240 | return die; | |
19241 | } | |
19242 | ||
19243 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
19244 | reading in and processing the type unit if necessary. */ | |
19245 | ||
19246 | static struct type * | |
19247 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
19248 | struct dwarf2_cu *cu) | |
19249 | { | |
19250 | struct signatured_type *sig_type; | |
19251 | struct dwarf2_cu *type_cu; | |
19252 | struct die_info *type_die; | |
19253 | struct type *type; | |
19254 | ||
a2ce51a0 | 19255 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
19256 | /* sig_type will be NULL if the signatured type is missing from |
19257 | the debug info. */ | |
19258 | if (sig_type == NULL) | |
19259 | { | |
19260 | complaint (&symfile_complaints, | |
19261 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19262 | " from DIE at 0x%x [in module %s]"), | |
19263 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19264 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19265 | return build_error_marker_type (cu, die); |
19266 | } | |
19267 | ||
19268 | /* If we already know the type we're done. */ | |
19269 | if (sig_type->type != NULL) | |
19270 | return sig_type->type; | |
19271 | ||
19272 | type_cu = cu; | |
19273 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
19274 | if (type_die != NULL) | |
19275 | { | |
19276 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
19277 | is created. This is important, for example, because for c++ classes | |
19278 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
19279 | type = read_type_die (type_die, type_cu); | |
19280 | if (type == NULL) | |
19281 | { | |
19282 | complaint (&symfile_complaints, | |
19283 | _("Dwarf Error: Cannot build signatured type %s" | |
19284 | " referenced from DIE at 0x%x [in module %s]"), | |
19285 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19286 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19287 | type = build_error_marker_type (cu, die); |
19288 | } | |
19289 | } | |
19290 | else | |
19291 | { | |
19292 | complaint (&symfile_complaints, | |
19293 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19294 | " from DIE at 0x%x [in module %s]"), | |
19295 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19296 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19297 | type = build_error_marker_type (cu, die); |
19298 | } | |
19299 | sig_type->type = type; | |
19300 | ||
19301 | return type; | |
19302 | } | |
19303 | ||
19304 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
19305 | reading in and processing the type unit if necessary. */ | |
19306 | ||
19307 | static struct type * | |
ff39bb5e | 19308 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 19309 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
19310 | { |
19311 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 19312 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19313 | { |
19314 | struct dwarf2_cu *type_cu = cu; | |
19315 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
19316 | ||
19317 | return read_type_die (type_die, type_cu); | |
19318 | } | |
19319 | else if (attr->form == DW_FORM_ref_sig8) | |
19320 | { | |
19321 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
19322 | } | |
19323 | else | |
19324 | { | |
19325 | complaint (&symfile_complaints, | |
19326 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
19327 | " at 0x%x [in module %s]"), | |
19328 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 19329 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19330 | return build_error_marker_type (cu, die); |
19331 | } | |
348e048f DE |
19332 | } |
19333 | ||
e5fe5e75 | 19334 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
19335 | |
19336 | static void | |
e5fe5e75 | 19337 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 19338 | { |
52dc124a | 19339 | struct signatured_type *sig_type; |
348e048f | 19340 | |
f4dc4d17 DE |
19341 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
19342 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
19343 | ||
6721b2ec DE |
19344 | /* We have the per_cu, but we need the signatured_type. |
19345 | Fortunately this is an easy translation. */ | |
19346 | gdb_assert (per_cu->is_debug_types); | |
19347 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 19348 | |
6721b2ec | 19349 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19350 | |
52dc124a | 19351 | read_signatured_type (sig_type); |
348e048f | 19352 | |
6721b2ec | 19353 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
19354 | } |
19355 | ||
dee91e82 DE |
19356 | /* die_reader_func for read_signatured_type. |
19357 | This is identical to load_full_comp_unit_reader, | |
19358 | but is kept separate for now. */ | |
348e048f DE |
19359 | |
19360 | static void | |
dee91e82 | 19361 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 19362 | const gdb_byte *info_ptr, |
dee91e82 DE |
19363 | struct die_info *comp_unit_die, |
19364 | int has_children, | |
19365 | void *data) | |
348e048f | 19366 | { |
dee91e82 | 19367 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 19368 | |
dee91e82 DE |
19369 | gdb_assert (cu->die_hash == NULL); |
19370 | cu->die_hash = | |
19371 | htab_create_alloc_ex (cu->header.length / 12, | |
19372 | die_hash, | |
19373 | die_eq, | |
19374 | NULL, | |
19375 | &cu->comp_unit_obstack, | |
19376 | hashtab_obstack_allocate, | |
19377 | dummy_obstack_deallocate); | |
348e048f | 19378 | |
dee91e82 DE |
19379 | if (has_children) |
19380 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
19381 | &info_ptr, comp_unit_die); | |
19382 | cu->dies = comp_unit_die; | |
19383 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
19384 | |
19385 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 19386 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 19387 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
19388 | or we won't be able to build types correctly. |
19389 | Similarly, if we do not read the producer, we can not apply | |
19390 | producer-specific interpretation. */ | |
95554aad | 19391 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 19392 | } |
348e048f | 19393 | |
3019eac3 DE |
19394 | /* Read in a signatured type and build its CU and DIEs. |
19395 | If the type is a stub for the real type in a DWO file, | |
19396 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
19397 | |
19398 | static void | |
19399 | read_signatured_type (struct signatured_type *sig_type) | |
19400 | { | |
19401 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 19402 | |
3019eac3 | 19403 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 19404 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19405 | |
f4dc4d17 DE |
19406 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
19407 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 19408 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
19409 | } |
19410 | ||
c906108c SS |
19411 | /* Decode simple location descriptions. |
19412 | Given a pointer to a dwarf block that defines a location, compute | |
19413 | the location and return the value. | |
19414 | ||
4cecd739 DJ |
19415 | NOTE drow/2003-11-18: This function is called in two situations |
19416 | now: for the address of static or global variables (partial symbols | |
19417 | only) and for offsets into structures which are expected to be | |
19418 | (more or less) constant. The partial symbol case should go away, | |
19419 | and only the constant case should remain. That will let this | |
19420 | function complain more accurately. A few special modes are allowed | |
19421 | without complaint for global variables (for instance, global | |
19422 | register values and thread-local values). | |
c906108c SS |
19423 | |
19424 | A location description containing no operations indicates that the | |
4cecd739 | 19425 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
19426 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
19427 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
19428 | complaint. |
19429 | ||
19430 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
19431 | |
19432 | static CORE_ADDR | |
e7c27a73 | 19433 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 19434 | { |
e7c27a73 | 19435 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
19436 | size_t i; |
19437 | size_t size = blk->size; | |
d521ce57 | 19438 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
19439 | CORE_ADDR stack[64]; |
19440 | int stacki; | |
19441 | unsigned int bytes_read, unsnd; | |
19442 | gdb_byte op; | |
c906108c | 19443 | |
21ae7a4d JK |
19444 | i = 0; |
19445 | stacki = 0; | |
19446 | stack[stacki] = 0; | |
19447 | stack[++stacki] = 0; | |
19448 | ||
19449 | while (i < size) | |
19450 | { | |
19451 | op = data[i++]; | |
19452 | switch (op) | |
19453 | { | |
19454 | case DW_OP_lit0: | |
19455 | case DW_OP_lit1: | |
19456 | case DW_OP_lit2: | |
19457 | case DW_OP_lit3: | |
19458 | case DW_OP_lit4: | |
19459 | case DW_OP_lit5: | |
19460 | case DW_OP_lit6: | |
19461 | case DW_OP_lit7: | |
19462 | case DW_OP_lit8: | |
19463 | case DW_OP_lit9: | |
19464 | case DW_OP_lit10: | |
19465 | case DW_OP_lit11: | |
19466 | case DW_OP_lit12: | |
19467 | case DW_OP_lit13: | |
19468 | case DW_OP_lit14: | |
19469 | case DW_OP_lit15: | |
19470 | case DW_OP_lit16: | |
19471 | case DW_OP_lit17: | |
19472 | case DW_OP_lit18: | |
19473 | case DW_OP_lit19: | |
19474 | case DW_OP_lit20: | |
19475 | case DW_OP_lit21: | |
19476 | case DW_OP_lit22: | |
19477 | case DW_OP_lit23: | |
19478 | case DW_OP_lit24: | |
19479 | case DW_OP_lit25: | |
19480 | case DW_OP_lit26: | |
19481 | case DW_OP_lit27: | |
19482 | case DW_OP_lit28: | |
19483 | case DW_OP_lit29: | |
19484 | case DW_OP_lit30: | |
19485 | case DW_OP_lit31: | |
19486 | stack[++stacki] = op - DW_OP_lit0; | |
19487 | break; | |
f1bea926 | 19488 | |
21ae7a4d JK |
19489 | case DW_OP_reg0: |
19490 | case DW_OP_reg1: | |
19491 | case DW_OP_reg2: | |
19492 | case DW_OP_reg3: | |
19493 | case DW_OP_reg4: | |
19494 | case DW_OP_reg5: | |
19495 | case DW_OP_reg6: | |
19496 | case DW_OP_reg7: | |
19497 | case DW_OP_reg8: | |
19498 | case DW_OP_reg9: | |
19499 | case DW_OP_reg10: | |
19500 | case DW_OP_reg11: | |
19501 | case DW_OP_reg12: | |
19502 | case DW_OP_reg13: | |
19503 | case DW_OP_reg14: | |
19504 | case DW_OP_reg15: | |
19505 | case DW_OP_reg16: | |
19506 | case DW_OP_reg17: | |
19507 | case DW_OP_reg18: | |
19508 | case DW_OP_reg19: | |
19509 | case DW_OP_reg20: | |
19510 | case DW_OP_reg21: | |
19511 | case DW_OP_reg22: | |
19512 | case DW_OP_reg23: | |
19513 | case DW_OP_reg24: | |
19514 | case DW_OP_reg25: | |
19515 | case DW_OP_reg26: | |
19516 | case DW_OP_reg27: | |
19517 | case DW_OP_reg28: | |
19518 | case DW_OP_reg29: | |
19519 | case DW_OP_reg30: | |
19520 | case DW_OP_reg31: | |
19521 | stack[++stacki] = op - DW_OP_reg0; | |
19522 | if (i < size) | |
19523 | dwarf2_complex_location_expr_complaint (); | |
19524 | break; | |
c906108c | 19525 | |
21ae7a4d JK |
19526 | case DW_OP_regx: |
19527 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
19528 | i += bytes_read; | |
19529 | stack[++stacki] = unsnd; | |
19530 | if (i < size) | |
19531 | dwarf2_complex_location_expr_complaint (); | |
19532 | break; | |
c906108c | 19533 | |
21ae7a4d JK |
19534 | case DW_OP_addr: |
19535 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
19536 | cu, &bytes_read); | |
19537 | i += bytes_read; | |
19538 | break; | |
d53d4ac5 | 19539 | |
21ae7a4d JK |
19540 | case DW_OP_const1u: |
19541 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
19542 | i += 1; | |
19543 | break; | |
19544 | ||
19545 | case DW_OP_const1s: | |
19546 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
19547 | i += 1; | |
19548 | break; | |
19549 | ||
19550 | case DW_OP_const2u: | |
19551 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
19552 | i += 2; | |
19553 | break; | |
19554 | ||
19555 | case DW_OP_const2s: | |
19556 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
19557 | i += 2; | |
19558 | break; | |
d53d4ac5 | 19559 | |
21ae7a4d JK |
19560 | case DW_OP_const4u: |
19561 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
19562 | i += 4; | |
19563 | break; | |
19564 | ||
19565 | case DW_OP_const4s: | |
19566 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
19567 | i += 4; | |
19568 | break; | |
19569 | ||
585861ea JK |
19570 | case DW_OP_const8u: |
19571 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
19572 | i += 8; | |
19573 | break; | |
19574 | ||
21ae7a4d JK |
19575 | case DW_OP_constu: |
19576 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
19577 | &bytes_read); | |
19578 | i += bytes_read; | |
19579 | break; | |
19580 | ||
19581 | case DW_OP_consts: | |
19582 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
19583 | i += bytes_read; | |
19584 | break; | |
19585 | ||
19586 | case DW_OP_dup: | |
19587 | stack[stacki + 1] = stack[stacki]; | |
19588 | stacki++; | |
19589 | break; | |
19590 | ||
19591 | case DW_OP_plus: | |
19592 | stack[stacki - 1] += stack[stacki]; | |
19593 | stacki--; | |
19594 | break; | |
19595 | ||
19596 | case DW_OP_plus_uconst: | |
19597 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
19598 | &bytes_read); | |
19599 | i += bytes_read; | |
19600 | break; | |
19601 | ||
19602 | case DW_OP_minus: | |
19603 | stack[stacki - 1] -= stack[stacki]; | |
19604 | stacki--; | |
19605 | break; | |
19606 | ||
19607 | case DW_OP_deref: | |
19608 | /* If we're not the last op, then we definitely can't encode | |
19609 | this using GDB's address_class enum. This is valid for partial | |
19610 | global symbols, although the variable's address will be bogus | |
19611 | in the psymtab. */ | |
19612 | if (i < size) | |
19613 | dwarf2_complex_location_expr_complaint (); | |
19614 | break; | |
19615 | ||
19616 | case DW_OP_GNU_push_tls_address: | |
19617 | /* The top of the stack has the offset from the beginning | |
19618 | of the thread control block at which the variable is located. */ | |
19619 | /* Nothing should follow this operator, so the top of stack would | |
19620 | be returned. */ | |
19621 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
19622 | address will be bogus in the psymtab. Make it always at least |
19623 | non-zero to not look as a variable garbage collected by linker | |
19624 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
19625 | if (i < size) |
19626 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 19627 | stack[stacki]++; |
21ae7a4d JK |
19628 | break; |
19629 | ||
19630 | case DW_OP_GNU_uninit: | |
19631 | break; | |
19632 | ||
3019eac3 | 19633 | case DW_OP_GNU_addr_index: |
49f6c839 | 19634 | case DW_OP_GNU_const_index: |
3019eac3 DE |
19635 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
19636 | &bytes_read); | |
19637 | i += bytes_read; | |
19638 | break; | |
19639 | ||
21ae7a4d JK |
19640 | default: |
19641 | { | |
f39c6ffd | 19642 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
19643 | |
19644 | if (name) | |
19645 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
19646 | name); | |
19647 | else | |
19648 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
19649 | op); | |
19650 | } | |
19651 | ||
19652 | return (stack[stacki]); | |
d53d4ac5 | 19653 | } |
3c6e0cb3 | 19654 | |
21ae7a4d JK |
19655 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
19656 | outside of the allocated space. Also enforce minimum>0. */ | |
19657 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
19658 | { | |
19659 | complaint (&symfile_complaints, | |
19660 | _("location description stack overflow")); | |
19661 | return 0; | |
19662 | } | |
19663 | ||
19664 | if (stacki <= 0) | |
19665 | { | |
19666 | complaint (&symfile_complaints, | |
19667 | _("location description stack underflow")); | |
19668 | return 0; | |
19669 | } | |
19670 | } | |
19671 | return (stack[stacki]); | |
c906108c SS |
19672 | } |
19673 | ||
19674 | /* memory allocation interface */ | |
19675 | ||
c906108c | 19676 | static struct dwarf_block * |
7b5a2f43 | 19677 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
19678 | { |
19679 | struct dwarf_block *blk; | |
19680 | ||
19681 | blk = (struct dwarf_block *) | |
7b5a2f43 | 19682 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
19683 | return (blk); |
19684 | } | |
19685 | ||
c906108c | 19686 | static struct die_info * |
b60c80d6 | 19687 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
19688 | { |
19689 | struct die_info *die; | |
b60c80d6 DJ |
19690 | size_t size = sizeof (struct die_info); |
19691 | ||
19692 | if (num_attrs > 1) | |
19693 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 19694 | |
b60c80d6 | 19695 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
19696 | memset (die, 0, sizeof (struct die_info)); |
19697 | return (die); | |
19698 | } | |
2e276125 JB |
19699 | |
19700 | \f | |
19701 | /* Macro support. */ | |
19702 | ||
233d95b5 JK |
19703 | /* Return file name relative to the compilation directory of file number I in |
19704 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 19705 | responsible for freeing it. */ |
233d95b5 | 19706 | |
2e276125 | 19707 | static char * |
233d95b5 | 19708 | file_file_name (int file, struct line_header *lh) |
2e276125 | 19709 | { |
6a83a1e6 EZ |
19710 | /* Is the file number a valid index into the line header's file name |
19711 | table? Remember that file numbers start with one, not zero. */ | |
19712 | if (1 <= file && file <= lh->num_file_names) | |
19713 | { | |
19714 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 19715 | |
233d95b5 | 19716 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 19717 | return xstrdup (fe->name); |
233d95b5 JK |
19718 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
19719 | fe->name, NULL); | |
6a83a1e6 | 19720 | } |
2e276125 JB |
19721 | else |
19722 | { | |
6a83a1e6 EZ |
19723 | /* The compiler produced a bogus file number. We can at least |
19724 | record the macro definitions made in the file, even if we | |
19725 | won't be able to find the file by name. */ | |
19726 | char fake_name[80]; | |
9a619af0 | 19727 | |
8c042590 PM |
19728 | xsnprintf (fake_name, sizeof (fake_name), |
19729 | "<bad macro file number %d>", file); | |
2e276125 | 19730 | |
6e70227d | 19731 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
19732 | _("bad file number in macro information (%d)"), |
19733 | file); | |
2e276125 | 19734 | |
6a83a1e6 | 19735 | return xstrdup (fake_name); |
2e276125 JB |
19736 | } |
19737 | } | |
19738 | ||
233d95b5 JK |
19739 | /* Return the full name of file number I in *LH's file name table. |
19740 | Use COMP_DIR as the name of the current directory of the | |
19741 | compilation. The result is allocated using xmalloc; the caller is | |
19742 | responsible for freeing it. */ | |
19743 | static char * | |
19744 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
19745 | { | |
19746 | /* Is the file number a valid index into the line header's file name | |
19747 | table? Remember that file numbers start with one, not zero. */ | |
19748 | if (1 <= file && file <= lh->num_file_names) | |
19749 | { | |
19750 | char *relative = file_file_name (file, lh); | |
19751 | ||
19752 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
19753 | return relative; | |
19754 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
19755 | } | |
19756 | else | |
19757 | return file_file_name (file, lh); | |
19758 | } | |
19759 | ||
2e276125 JB |
19760 | |
19761 | static struct macro_source_file * | |
19762 | macro_start_file (int file, int line, | |
19763 | struct macro_source_file *current_file, | |
19764 | const char *comp_dir, | |
19765 | struct line_header *lh, struct objfile *objfile) | |
19766 | { | |
233d95b5 JK |
19767 | /* File name relative to the compilation directory of this source file. */ |
19768 | char *file_name = file_file_name (file, lh); | |
2e276125 | 19769 | |
2e276125 | 19770 | if (! current_file) |
abc9d0dc | 19771 | { |
fc474241 DE |
19772 | /* Note: We don't create a macro table for this compilation unit |
19773 | at all until we actually get a filename. */ | |
19774 | struct macro_table *macro_table = get_macro_table (objfile, comp_dir); | |
19775 | ||
abc9d0dc TT |
19776 | /* If we have no current file, then this must be the start_file |
19777 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
19778 | current_file = macro_set_main (macro_table, file_name); |
19779 | macro_define_special (macro_table); | |
abc9d0dc | 19780 | } |
2e276125 | 19781 | else |
233d95b5 | 19782 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 19783 | |
233d95b5 | 19784 | xfree (file_name); |
6e70227d | 19785 | |
2e276125 JB |
19786 | return current_file; |
19787 | } | |
19788 | ||
19789 | ||
19790 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
19791 | followed by a null byte. */ | |
19792 | static char * | |
19793 | copy_string (const char *buf, int len) | |
19794 | { | |
19795 | char *s = xmalloc (len + 1); | |
9a619af0 | 19796 | |
2e276125 JB |
19797 | memcpy (s, buf, len); |
19798 | s[len] = '\0'; | |
2e276125 JB |
19799 | return s; |
19800 | } | |
19801 | ||
19802 | ||
19803 | static const char * | |
19804 | consume_improper_spaces (const char *p, const char *body) | |
19805 | { | |
19806 | if (*p == ' ') | |
19807 | { | |
4d3c2250 | 19808 | complaint (&symfile_complaints, |
3e43a32a MS |
19809 | _("macro definition contains spaces " |
19810 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 19811 | body); |
2e276125 JB |
19812 | |
19813 | while (*p == ' ') | |
19814 | p++; | |
19815 | } | |
19816 | ||
19817 | return p; | |
19818 | } | |
19819 | ||
19820 | ||
19821 | static void | |
19822 | parse_macro_definition (struct macro_source_file *file, int line, | |
19823 | const char *body) | |
19824 | { | |
19825 | const char *p; | |
19826 | ||
19827 | /* The body string takes one of two forms. For object-like macro | |
19828 | definitions, it should be: | |
19829 | ||
19830 | <macro name> " " <definition> | |
19831 | ||
19832 | For function-like macro definitions, it should be: | |
19833 | ||
19834 | <macro name> "() " <definition> | |
19835 | or | |
19836 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
19837 | ||
19838 | Spaces may appear only where explicitly indicated, and in the | |
19839 | <definition>. | |
19840 | ||
19841 | The Dwarf 2 spec says that an object-like macro's name is always | |
19842 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 19843 | the space when the macro's definition is the empty string. |
2e276125 JB |
19844 | |
19845 | The Dwarf 2 spec says that there should be no spaces between the | |
19846 | formal arguments in a function-like macro's formal argument list, | |
19847 | but versions of GCC around March 2002 include spaces after the | |
19848 | commas. */ | |
19849 | ||
19850 | ||
19851 | /* Find the extent of the macro name. The macro name is terminated | |
19852 | by either a space or null character (for an object-like macro) or | |
19853 | an opening paren (for a function-like macro). */ | |
19854 | for (p = body; *p; p++) | |
19855 | if (*p == ' ' || *p == '(') | |
19856 | break; | |
19857 | ||
19858 | if (*p == ' ' || *p == '\0') | |
19859 | { | |
19860 | /* It's an object-like macro. */ | |
19861 | int name_len = p - body; | |
19862 | char *name = copy_string (body, name_len); | |
19863 | const char *replacement; | |
19864 | ||
19865 | if (*p == ' ') | |
19866 | replacement = body + name_len + 1; | |
19867 | else | |
19868 | { | |
4d3c2250 | 19869 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19870 | replacement = body + name_len; |
19871 | } | |
6e70227d | 19872 | |
2e276125 JB |
19873 | macro_define_object (file, line, name, replacement); |
19874 | ||
19875 | xfree (name); | |
19876 | } | |
19877 | else if (*p == '(') | |
19878 | { | |
19879 | /* It's a function-like macro. */ | |
19880 | char *name = copy_string (body, p - body); | |
19881 | int argc = 0; | |
19882 | int argv_size = 1; | |
19883 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
19884 | ||
19885 | p++; | |
19886 | ||
19887 | p = consume_improper_spaces (p, body); | |
19888 | ||
19889 | /* Parse the formal argument list. */ | |
19890 | while (*p && *p != ')') | |
19891 | { | |
19892 | /* Find the extent of the current argument name. */ | |
19893 | const char *arg_start = p; | |
19894 | ||
19895 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
19896 | p++; | |
19897 | ||
19898 | if (! *p || p == arg_start) | |
4d3c2250 | 19899 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19900 | else |
19901 | { | |
19902 | /* Make sure argv has room for the new argument. */ | |
19903 | if (argc >= argv_size) | |
19904 | { | |
19905 | argv_size *= 2; | |
19906 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
19907 | } | |
19908 | ||
19909 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
19910 | } | |
19911 | ||
19912 | p = consume_improper_spaces (p, body); | |
19913 | ||
19914 | /* Consume the comma, if present. */ | |
19915 | if (*p == ',') | |
19916 | { | |
19917 | p++; | |
19918 | ||
19919 | p = consume_improper_spaces (p, body); | |
19920 | } | |
19921 | } | |
19922 | ||
19923 | if (*p == ')') | |
19924 | { | |
19925 | p++; | |
19926 | ||
19927 | if (*p == ' ') | |
19928 | /* Perfectly formed definition, no complaints. */ | |
19929 | macro_define_function (file, line, name, | |
6e70227d | 19930 | argc, (const char **) argv, |
2e276125 JB |
19931 | p + 1); |
19932 | else if (*p == '\0') | |
19933 | { | |
19934 | /* Complain, but do define it. */ | |
4d3c2250 | 19935 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 19936 | macro_define_function (file, line, name, |
6e70227d | 19937 | argc, (const char **) argv, |
2e276125 JB |
19938 | p); |
19939 | } | |
19940 | else | |
19941 | /* Just complain. */ | |
4d3c2250 | 19942 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19943 | } |
19944 | else | |
19945 | /* Just complain. */ | |
4d3c2250 | 19946 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19947 | |
19948 | xfree (name); | |
19949 | { | |
19950 | int i; | |
19951 | ||
19952 | for (i = 0; i < argc; i++) | |
19953 | xfree (argv[i]); | |
19954 | } | |
19955 | xfree (argv); | |
19956 | } | |
19957 | else | |
4d3c2250 | 19958 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19959 | } |
19960 | ||
cf2c3c16 TT |
19961 | /* Skip some bytes from BYTES according to the form given in FORM. |
19962 | Returns the new pointer. */ | |
2e276125 | 19963 | |
d521ce57 TT |
19964 | static const gdb_byte * |
19965 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
19966 | enum dwarf_form form, |
19967 | unsigned int offset_size, | |
19968 | struct dwarf2_section_info *section) | |
2e276125 | 19969 | { |
cf2c3c16 | 19970 | unsigned int bytes_read; |
2e276125 | 19971 | |
cf2c3c16 | 19972 | switch (form) |
2e276125 | 19973 | { |
cf2c3c16 TT |
19974 | case DW_FORM_data1: |
19975 | case DW_FORM_flag: | |
19976 | ++bytes; | |
19977 | break; | |
19978 | ||
19979 | case DW_FORM_data2: | |
19980 | bytes += 2; | |
19981 | break; | |
19982 | ||
19983 | case DW_FORM_data4: | |
19984 | bytes += 4; | |
19985 | break; | |
19986 | ||
19987 | case DW_FORM_data8: | |
19988 | bytes += 8; | |
19989 | break; | |
19990 | ||
19991 | case DW_FORM_string: | |
19992 | read_direct_string (abfd, bytes, &bytes_read); | |
19993 | bytes += bytes_read; | |
19994 | break; | |
19995 | ||
19996 | case DW_FORM_sec_offset: | |
19997 | case DW_FORM_strp: | |
36586728 | 19998 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
19999 | bytes += offset_size; |
20000 | break; | |
20001 | ||
20002 | case DW_FORM_block: | |
20003 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
20004 | bytes += bytes_read; | |
20005 | break; | |
20006 | ||
20007 | case DW_FORM_block1: | |
20008 | bytes += 1 + read_1_byte (abfd, bytes); | |
20009 | break; | |
20010 | case DW_FORM_block2: | |
20011 | bytes += 2 + read_2_bytes (abfd, bytes); | |
20012 | break; | |
20013 | case DW_FORM_block4: | |
20014 | bytes += 4 + read_4_bytes (abfd, bytes); | |
20015 | break; | |
20016 | ||
20017 | case DW_FORM_sdata: | |
20018 | case DW_FORM_udata: | |
3019eac3 DE |
20019 | case DW_FORM_GNU_addr_index: |
20020 | case DW_FORM_GNU_str_index: | |
d521ce57 | 20021 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
20022 | if (bytes == NULL) |
20023 | { | |
20024 | dwarf2_section_buffer_overflow_complaint (section); | |
20025 | return NULL; | |
20026 | } | |
cf2c3c16 TT |
20027 | break; |
20028 | ||
20029 | default: | |
20030 | { | |
20031 | complain: | |
20032 | complaint (&symfile_complaints, | |
20033 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 20034 | form, get_section_name (section)); |
cf2c3c16 TT |
20035 | return NULL; |
20036 | } | |
2e276125 JB |
20037 | } |
20038 | ||
cf2c3c16 TT |
20039 | return bytes; |
20040 | } | |
757a13d0 | 20041 | |
cf2c3c16 TT |
20042 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
20043 | opcode. Returns an updated pointer to the macro data buffer; or, | |
20044 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 20045 | |
d521ce57 | 20046 | static const gdb_byte * |
cf2c3c16 | 20047 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
20048 | const gdb_byte **opcode_definitions, |
20049 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
20050 | bfd *abfd, |
20051 | unsigned int offset_size, | |
20052 | struct dwarf2_section_info *section) | |
20053 | { | |
20054 | unsigned int bytes_read, i; | |
20055 | unsigned long arg; | |
d521ce57 | 20056 | const gdb_byte *defn; |
2e276125 | 20057 | |
cf2c3c16 | 20058 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 20059 | { |
cf2c3c16 TT |
20060 | complaint (&symfile_complaints, |
20061 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
20062 | opcode); | |
20063 | return NULL; | |
20064 | } | |
2e276125 | 20065 | |
cf2c3c16 TT |
20066 | defn = opcode_definitions[opcode]; |
20067 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
20068 | defn += bytes_read; | |
2e276125 | 20069 | |
cf2c3c16 TT |
20070 | for (i = 0; i < arg; ++i) |
20071 | { | |
f664829e DE |
20072 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
20073 | section); | |
cf2c3c16 TT |
20074 | if (mac_ptr == NULL) |
20075 | { | |
20076 | /* skip_form_bytes already issued the complaint. */ | |
20077 | return NULL; | |
20078 | } | |
20079 | } | |
757a13d0 | 20080 | |
cf2c3c16 TT |
20081 | return mac_ptr; |
20082 | } | |
757a13d0 | 20083 | |
cf2c3c16 TT |
20084 | /* A helper function which parses the header of a macro section. |
20085 | If the macro section is the extended (for now called "GNU") type, | |
20086 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
20087 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 20088 | |
d521ce57 TT |
20089 | static const gdb_byte * |
20090 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 20091 | bfd *abfd, |
d521ce57 | 20092 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
20093 | unsigned int *offset_size, |
20094 | int section_is_gnu) | |
20095 | { | |
20096 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 20097 | |
cf2c3c16 TT |
20098 | if (section_is_gnu) |
20099 | { | |
20100 | unsigned int version, flags; | |
757a13d0 | 20101 | |
cf2c3c16 TT |
20102 | version = read_2_bytes (abfd, mac_ptr); |
20103 | if (version != 4) | |
20104 | { | |
20105 | complaint (&symfile_complaints, | |
20106 | _("unrecognized version `%d' in .debug_macro section"), | |
20107 | version); | |
20108 | return NULL; | |
20109 | } | |
20110 | mac_ptr += 2; | |
757a13d0 | 20111 | |
cf2c3c16 TT |
20112 | flags = read_1_byte (abfd, mac_ptr); |
20113 | ++mac_ptr; | |
20114 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 20115 | |
cf2c3c16 TT |
20116 | if ((flags & 2) != 0) |
20117 | /* We don't need the line table offset. */ | |
20118 | mac_ptr += *offset_size; | |
757a13d0 | 20119 | |
cf2c3c16 TT |
20120 | /* Vendor opcode descriptions. */ |
20121 | if ((flags & 4) != 0) | |
20122 | { | |
20123 | unsigned int i, count; | |
757a13d0 | 20124 | |
cf2c3c16 TT |
20125 | count = read_1_byte (abfd, mac_ptr); |
20126 | ++mac_ptr; | |
20127 | for (i = 0; i < count; ++i) | |
20128 | { | |
20129 | unsigned int opcode, bytes_read; | |
20130 | unsigned long arg; | |
20131 | ||
20132 | opcode = read_1_byte (abfd, mac_ptr); | |
20133 | ++mac_ptr; | |
20134 | opcode_definitions[opcode] = mac_ptr; | |
20135 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20136 | mac_ptr += bytes_read; | |
20137 | mac_ptr += arg; | |
20138 | } | |
757a13d0 | 20139 | } |
cf2c3c16 | 20140 | } |
757a13d0 | 20141 | |
cf2c3c16 TT |
20142 | return mac_ptr; |
20143 | } | |
757a13d0 | 20144 | |
cf2c3c16 | 20145 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 20146 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
20147 | |
20148 | static void | |
d521ce57 TT |
20149 | dwarf_decode_macro_bytes (bfd *abfd, |
20150 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 20151 | struct macro_source_file *current_file, |
15d034d0 | 20152 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 20153 | struct dwarf2_section_info *section, |
36586728 | 20154 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 20155 | unsigned int offset_size, |
8fc3fc34 TT |
20156 | struct objfile *objfile, |
20157 | htab_t include_hash) | |
cf2c3c16 TT |
20158 | { |
20159 | enum dwarf_macro_record_type macinfo_type; | |
20160 | int at_commandline; | |
d521ce57 | 20161 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 20162 | |
cf2c3c16 TT |
20163 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
20164 | &offset_size, section_is_gnu); | |
20165 | if (mac_ptr == NULL) | |
20166 | { | |
20167 | /* We already issued a complaint. */ | |
20168 | return; | |
20169 | } | |
757a13d0 JK |
20170 | |
20171 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
20172 | GDB is still reading the definitions from command line. First | |
20173 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
20174 | to create CURRENT_FILE for the main source holding also the command line | |
20175 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
20176 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
20177 | ||
20178 | at_commandline = 1; | |
20179 | ||
20180 | do | |
20181 | { | |
20182 | /* Do we at least have room for a macinfo type byte? */ | |
20183 | if (mac_ptr >= mac_end) | |
20184 | { | |
f664829e | 20185 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
20186 | break; |
20187 | } | |
20188 | ||
20189 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20190 | mac_ptr++; | |
20191 | ||
cf2c3c16 TT |
20192 | /* Note that we rely on the fact that the corresponding GNU and |
20193 | DWARF constants are the same. */ | |
757a13d0 JK |
20194 | switch (macinfo_type) |
20195 | { | |
20196 | /* A zero macinfo type indicates the end of the macro | |
20197 | information. */ | |
20198 | case 0: | |
20199 | break; | |
2e276125 | 20200 | |
cf2c3c16 TT |
20201 | case DW_MACRO_GNU_define: |
20202 | case DW_MACRO_GNU_undef: | |
20203 | case DW_MACRO_GNU_define_indirect: | |
20204 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
20205 | case DW_MACRO_GNU_define_indirect_alt: |
20206 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 20207 | { |
891d2f0b | 20208 | unsigned int bytes_read; |
2e276125 | 20209 | int line; |
d521ce57 | 20210 | const char *body; |
cf2c3c16 | 20211 | int is_define; |
2e276125 | 20212 | |
cf2c3c16 TT |
20213 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20214 | mac_ptr += bytes_read; | |
20215 | ||
20216 | if (macinfo_type == DW_MACRO_GNU_define | |
20217 | || macinfo_type == DW_MACRO_GNU_undef) | |
20218 | { | |
20219 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
20220 | mac_ptr += bytes_read; | |
20221 | } | |
20222 | else | |
20223 | { | |
20224 | LONGEST str_offset; | |
20225 | ||
20226 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20227 | mac_ptr += offset_size; | |
2e276125 | 20228 | |
36586728 | 20229 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
20230 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
20231 | || section_is_dwz) | |
36586728 TT |
20232 | { |
20233 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20234 | ||
20235 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
20236 | } | |
20237 | else | |
20238 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
20239 | } |
20240 | ||
20241 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
20242 | || macinfo_type == DW_MACRO_GNU_define_indirect |
20243 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 20244 | if (! current_file) |
757a13d0 JK |
20245 | { |
20246 | /* DWARF violation as no main source is present. */ | |
20247 | complaint (&symfile_complaints, | |
20248 | _("debug info with no main source gives macro %s " | |
20249 | "on line %d: %s"), | |
cf2c3c16 TT |
20250 | is_define ? _("definition") : _("undefinition"), |
20251 | line, body); | |
757a13d0 JK |
20252 | break; |
20253 | } | |
3e43a32a MS |
20254 | if ((line == 0 && !at_commandline) |
20255 | || (line != 0 && at_commandline)) | |
4d3c2250 | 20256 | complaint (&symfile_complaints, |
757a13d0 JK |
20257 | _("debug info gives %s macro %s with %s line %d: %s"), |
20258 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 20259 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
20260 | line == 0 ? _("zero") : _("non-zero"), line, body); |
20261 | ||
cf2c3c16 | 20262 | if (is_define) |
757a13d0 | 20263 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
20264 | else |
20265 | { | |
20266 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
20267 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
20268 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
20269 | macro_undef (current_file, line, body); |
20270 | } | |
2e276125 JB |
20271 | } |
20272 | break; | |
20273 | ||
cf2c3c16 | 20274 | case DW_MACRO_GNU_start_file: |
2e276125 | 20275 | { |
891d2f0b | 20276 | unsigned int bytes_read; |
2e276125 JB |
20277 | int line, file; |
20278 | ||
20279 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20280 | mac_ptr += bytes_read; | |
20281 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20282 | mac_ptr += bytes_read; | |
20283 | ||
3e43a32a MS |
20284 | if ((line == 0 && !at_commandline) |
20285 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
20286 | complaint (&symfile_complaints, |
20287 | _("debug info gives source %d included " | |
20288 | "from %s at %s line %d"), | |
20289 | file, at_commandline ? _("command-line") : _("file"), | |
20290 | line == 0 ? _("zero") : _("non-zero"), line); | |
20291 | ||
20292 | if (at_commandline) | |
20293 | { | |
cf2c3c16 TT |
20294 | /* This DW_MACRO_GNU_start_file was executed in the |
20295 | pass one. */ | |
757a13d0 JK |
20296 | at_commandline = 0; |
20297 | } | |
20298 | else | |
20299 | current_file = macro_start_file (file, line, | |
20300 | current_file, comp_dir, | |
cf2c3c16 | 20301 | lh, objfile); |
2e276125 JB |
20302 | } |
20303 | break; | |
20304 | ||
cf2c3c16 | 20305 | case DW_MACRO_GNU_end_file: |
2e276125 | 20306 | if (! current_file) |
4d3c2250 | 20307 | complaint (&symfile_complaints, |
3e43a32a MS |
20308 | _("macro debug info has an unmatched " |
20309 | "`close_file' directive")); | |
2e276125 JB |
20310 | else |
20311 | { | |
20312 | current_file = current_file->included_by; | |
20313 | if (! current_file) | |
20314 | { | |
cf2c3c16 | 20315 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
20316 | |
20317 | /* GCC circa March 2002 doesn't produce the zero | |
20318 | type byte marking the end of the compilation | |
20319 | unit. Complain if it's not there, but exit no | |
20320 | matter what. */ | |
20321 | ||
20322 | /* Do we at least have room for a macinfo type byte? */ | |
20323 | if (mac_ptr >= mac_end) | |
20324 | { | |
f664829e | 20325 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
20326 | return; |
20327 | } | |
20328 | ||
20329 | /* We don't increment mac_ptr here, so this is just | |
20330 | a look-ahead. */ | |
20331 | next_type = read_1_byte (abfd, mac_ptr); | |
20332 | if (next_type != 0) | |
4d3c2250 | 20333 | complaint (&symfile_complaints, |
3e43a32a MS |
20334 | _("no terminating 0-type entry for " |
20335 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
20336 | |
20337 | return; | |
20338 | } | |
20339 | } | |
20340 | break; | |
20341 | ||
cf2c3c16 | 20342 | case DW_MACRO_GNU_transparent_include: |
36586728 | 20343 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20344 | { |
20345 | LONGEST offset; | |
8fc3fc34 | 20346 | void **slot; |
a036ba48 TT |
20347 | bfd *include_bfd = abfd; |
20348 | struct dwarf2_section_info *include_section = section; | |
20349 | struct dwarf2_section_info alt_section; | |
d521ce57 | 20350 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 20351 | int is_dwz = section_is_dwz; |
d521ce57 | 20352 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
20353 | |
20354 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20355 | mac_ptr += offset_size; | |
20356 | ||
a036ba48 TT |
20357 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
20358 | { | |
20359 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20360 | ||
20361 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
20362 | &dwz->macro); | |
20363 | ||
a036ba48 | 20364 | include_section = &dwz->macro; |
a32a8923 | 20365 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
20366 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
20367 | is_dwz = 1; | |
20368 | } | |
20369 | ||
20370 | new_mac_ptr = include_section->buffer + offset; | |
20371 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
20372 | ||
8fc3fc34 TT |
20373 | if (*slot != NULL) |
20374 | { | |
20375 | /* This has actually happened; see | |
20376 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
20377 | complaint (&symfile_complaints, | |
20378 | _("recursive DW_MACRO_GNU_transparent_include in " | |
20379 | ".debug_macro section")); | |
20380 | } | |
20381 | else | |
20382 | { | |
d521ce57 | 20383 | *slot = (void *) new_mac_ptr; |
36586728 | 20384 | |
a036ba48 | 20385 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 20386 | include_mac_end, current_file, |
8fc3fc34 | 20387 | lh, comp_dir, |
36586728 | 20388 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
20389 | offset_size, objfile, include_hash); |
20390 | ||
d521ce57 | 20391 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 20392 | } |
cf2c3c16 TT |
20393 | } |
20394 | break; | |
20395 | ||
2e276125 | 20396 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
20397 | if (!section_is_gnu) |
20398 | { | |
20399 | unsigned int bytes_read; | |
20400 | int constant; | |
2e276125 | 20401 | |
cf2c3c16 TT |
20402 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20403 | mac_ptr += bytes_read; | |
20404 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20405 | mac_ptr += bytes_read; | |
2e276125 | 20406 | |
cf2c3c16 TT |
20407 | /* We don't recognize any vendor extensions. */ |
20408 | break; | |
20409 | } | |
20410 | /* FALLTHROUGH */ | |
20411 | ||
20412 | default: | |
20413 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20414 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20415 | section); |
20416 | if (mac_ptr == NULL) | |
20417 | return; | |
20418 | break; | |
2e276125 | 20419 | } |
757a13d0 | 20420 | } while (macinfo_type != 0); |
2e276125 | 20421 | } |
8e19ed76 | 20422 | |
cf2c3c16 | 20423 | static void |
09262596 | 20424 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 20425 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 20426 | { |
bb5ed363 | 20427 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
20428 | struct line_header *lh = cu->line_header; |
20429 | bfd *abfd; | |
d521ce57 | 20430 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
20431 | struct macro_source_file *current_file = 0; |
20432 | enum dwarf_macro_record_type macinfo_type; | |
20433 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 20434 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
20435 | struct cleanup *cleanup; |
20436 | htab_t include_hash; | |
20437 | void **slot; | |
09262596 DE |
20438 | struct dwarf2_section_info *section; |
20439 | const char *section_name; | |
20440 | ||
20441 | if (cu->dwo_unit != NULL) | |
20442 | { | |
20443 | if (section_is_gnu) | |
20444 | { | |
20445 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
20446 | section_name = ".debug_macro.dwo"; | |
20447 | } | |
20448 | else | |
20449 | { | |
20450 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
20451 | section_name = ".debug_macinfo.dwo"; | |
20452 | } | |
20453 | } | |
20454 | else | |
20455 | { | |
20456 | if (section_is_gnu) | |
20457 | { | |
20458 | section = &dwarf2_per_objfile->macro; | |
20459 | section_name = ".debug_macro"; | |
20460 | } | |
20461 | else | |
20462 | { | |
20463 | section = &dwarf2_per_objfile->macinfo; | |
20464 | section_name = ".debug_macinfo"; | |
20465 | } | |
20466 | } | |
cf2c3c16 | 20467 | |
bb5ed363 | 20468 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
20469 | if (section->buffer == NULL) |
20470 | { | |
fceca515 | 20471 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
20472 | return; |
20473 | } | |
a32a8923 | 20474 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
20475 | |
20476 | /* First pass: Find the name of the base filename. | |
20477 | This filename is needed in order to process all macros whose definition | |
20478 | (or undefinition) comes from the command line. These macros are defined | |
20479 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
20480 | associated to the base file. | |
20481 | ||
20482 | To determine the base file name, we scan the macro definitions until we | |
20483 | reach the first DW_MACINFO_start_file entry. We then initialize | |
20484 | CURRENT_FILE accordingly so that any macro definition found before the | |
20485 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
20486 | ||
20487 | mac_ptr = section->buffer + offset; | |
20488 | mac_end = section->buffer + section->size; | |
20489 | ||
20490 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
20491 | &offset_size, section_is_gnu); | |
20492 | if (mac_ptr == NULL) | |
20493 | { | |
20494 | /* We already issued a complaint. */ | |
20495 | return; | |
20496 | } | |
20497 | ||
20498 | do | |
20499 | { | |
20500 | /* Do we at least have room for a macinfo type byte? */ | |
20501 | if (mac_ptr >= mac_end) | |
20502 | { | |
20503 | /* Complaint is printed during the second pass as GDB will probably | |
20504 | stop the first pass earlier upon finding | |
20505 | DW_MACINFO_start_file. */ | |
20506 | break; | |
20507 | } | |
20508 | ||
20509 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20510 | mac_ptr++; | |
20511 | ||
20512 | /* Note that we rely on the fact that the corresponding GNU and | |
20513 | DWARF constants are the same. */ | |
20514 | switch (macinfo_type) | |
20515 | { | |
20516 | /* A zero macinfo type indicates the end of the macro | |
20517 | information. */ | |
20518 | case 0: | |
20519 | break; | |
20520 | ||
20521 | case DW_MACRO_GNU_define: | |
20522 | case DW_MACRO_GNU_undef: | |
20523 | /* Only skip the data by MAC_PTR. */ | |
20524 | { | |
20525 | unsigned int bytes_read; | |
20526 | ||
20527 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20528 | mac_ptr += bytes_read; | |
20529 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20530 | mac_ptr += bytes_read; | |
20531 | } | |
20532 | break; | |
20533 | ||
20534 | case DW_MACRO_GNU_start_file: | |
20535 | { | |
20536 | unsigned int bytes_read; | |
20537 | int line, file; | |
20538 | ||
20539 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20540 | mac_ptr += bytes_read; | |
20541 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20542 | mac_ptr += bytes_read; | |
20543 | ||
20544 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 20545 | comp_dir, lh, objfile); |
cf2c3c16 TT |
20546 | } |
20547 | break; | |
20548 | ||
20549 | case DW_MACRO_GNU_end_file: | |
20550 | /* No data to skip by MAC_PTR. */ | |
20551 | break; | |
20552 | ||
20553 | case DW_MACRO_GNU_define_indirect: | |
20554 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
20555 | case DW_MACRO_GNU_define_indirect_alt: |
20556 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
20557 | { |
20558 | unsigned int bytes_read; | |
20559 | ||
20560 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20561 | mac_ptr += bytes_read; | |
20562 | mac_ptr += offset_size; | |
20563 | } | |
20564 | break; | |
20565 | ||
20566 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 20567 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20568 | /* Note that, according to the spec, a transparent include |
20569 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
20570 | skip this opcode. */ | |
20571 | mac_ptr += offset_size; | |
20572 | break; | |
20573 | ||
20574 | case DW_MACINFO_vendor_ext: | |
20575 | /* Only skip the data by MAC_PTR. */ | |
20576 | if (!section_is_gnu) | |
20577 | { | |
20578 | unsigned int bytes_read; | |
20579 | ||
20580 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20581 | mac_ptr += bytes_read; | |
20582 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20583 | mac_ptr += bytes_read; | |
20584 | } | |
20585 | /* FALLTHROUGH */ | |
20586 | ||
20587 | default: | |
20588 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20589 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20590 | section); |
20591 | if (mac_ptr == NULL) | |
20592 | return; | |
20593 | break; | |
20594 | } | |
20595 | } while (macinfo_type != 0 && current_file == NULL); | |
20596 | ||
20597 | /* Second pass: Process all entries. | |
20598 | ||
20599 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
20600 | command-line macro definitions/undefinitions. This flag is unset when we | |
20601 | reach the first DW_MACINFO_start_file entry. */ | |
20602 | ||
8fc3fc34 TT |
20603 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
20604 | NULL, xcalloc, xfree); | |
20605 | cleanup = make_cleanup_htab_delete (include_hash); | |
20606 | mac_ptr = section->buffer + offset; | |
20607 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 20608 | *slot = (void *) mac_ptr; |
8fc3fc34 | 20609 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
36586728 TT |
20610 | current_file, lh, comp_dir, section, |
20611 | section_is_gnu, 0, | |
8fc3fc34 TT |
20612 | offset_size, objfile, include_hash); |
20613 | do_cleanups (cleanup); | |
cf2c3c16 TT |
20614 | } |
20615 | ||
8e19ed76 | 20616 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 20617 | if so return true else false. */ |
380bca97 | 20618 | |
8e19ed76 | 20619 | static int |
6e5a29e1 | 20620 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
20621 | { |
20622 | return (attr == NULL ? 0 : | |
20623 | attr->form == DW_FORM_block1 | |
20624 | || attr->form == DW_FORM_block2 | |
20625 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
20626 | || attr->form == DW_FORM_block |
20627 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 20628 | } |
4c2df51b | 20629 | |
c6a0999f JB |
20630 | /* Return non-zero if ATTR's value is a section offset --- classes |
20631 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
20632 | You may use DW_UNSND (attr) to retrieve such offsets. | |
20633 | ||
20634 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
20635 | may have a value that belongs to more than one of these classes; it | |
20636 | would be ambiguous if we did, because we use the same forms for all | |
20637 | of them. */ | |
380bca97 | 20638 | |
3690dd37 | 20639 | static int |
6e5a29e1 | 20640 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
20641 | { |
20642 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
20643 | || attr->form == DW_FORM_data8 |
20644 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
20645 | } |
20646 | ||
3690dd37 JB |
20647 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
20648 | zero otherwise. When this function returns true, you can apply | |
20649 | dwarf2_get_attr_constant_value to it. | |
20650 | ||
20651 | However, note that for some attributes you must check | |
20652 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
20653 | and DW_FORM_data8 are members of both the constant class, and of | |
20654 | the classes that contain offsets into other debug sections | |
20655 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
20656 | that, if an attribute's can be either a constant or one of the | |
20657 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
20658 | taken as section offsets, not constants. */ | |
380bca97 | 20659 | |
3690dd37 | 20660 | static int |
6e5a29e1 | 20661 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
20662 | { |
20663 | switch (attr->form) | |
20664 | { | |
20665 | case DW_FORM_sdata: | |
20666 | case DW_FORM_udata: | |
20667 | case DW_FORM_data1: | |
20668 | case DW_FORM_data2: | |
20669 | case DW_FORM_data4: | |
20670 | case DW_FORM_data8: | |
20671 | return 1; | |
20672 | default: | |
20673 | return 0; | |
20674 | } | |
20675 | } | |
20676 | ||
7771576e SA |
20677 | |
20678 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
20679 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
20680 | ||
20681 | static int | |
6e5a29e1 | 20682 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
20683 | { |
20684 | switch (attr->form) | |
20685 | { | |
20686 | case DW_FORM_ref_addr: | |
20687 | case DW_FORM_ref1: | |
20688 | case DW_FORM_ref2: | |
20689 | case DW_FORM_ref4: | |
20690 | case DW_FORM_ref8: | |
20691 | case DW_FORM_ref_udata: | |
20692 | case DW_FORM_GNU_ref_alt: | |
20693 | return 1; | |
20694 | default: | |
20695 | return 0; | |
20696 | } | |
20697 | } | |
20698 | ||
3019eac3 DE |
20699 | /* Return the .debug_loc section to use for CU. |
20700 | For DWO files use .debug_loc.dwo. */ | |
20701 | ||
20702 | static struct dwarf2_section_info * | |
20703 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
20704 | { | |
20705 | if (cu->dwo_unit) | |
20706 | return &cu->dwo_unit->dwo_file->sections.loc; | |
20707 | return &dwarf2_per_objfile->loc; | |
20708 | } | |
20709 | ||
8cf6f0b1 TT |
20710 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
20711 | ||
20712 | static void | |
20713 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
20714 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 20715 | const struct attribute *attr) |
8cf6f0b1 | 20716 | { |
3019eac3 DE |
20717 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20718 | ||
20719 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
20720 | |
20721 | baton->per_cu = cu->per_cu; | |
20722 | gdb_assert (baton->per_cu); | |
20723 | /* We don't know how long the location list is, but make sure we | |
20724 | don't run off the edge of the section. */ | |
3019eac3 DE |
20725 | baton->size = section->size - DW_UNSND (attr); |
20726 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 20727 | baton->base_address = cu->base_address; |
f664829e | 20728 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
20729 | } |
20730 | ||
4c2df51b | 20731 | static void |
ff39bb5e | 20732 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 20733 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 20734 | { |
bb5ed363 | 20735 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 20736 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 20737 | |
3690dd37 | 20738 | if (attr_form_is_section_offset (attr) |
3019eac3 | 20739 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
20740 | the section. If so, fall through to the complaint in the |
20741 | other branch. */ | |
3019eac3 | 20742 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 20743 | { |
0d53c4c4 | 20744 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 20745 | |
bb5ed363 | 20746 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20747 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 20748 | |
8cf6f0b1 | 20749 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 20750 | |
d00adf39 | 20751 | if (cu->base_known == 0) |
0d53c4c4 | 20752 | complaint (&symfile_complaints, |
3e43a32a MS |
20753 | _("Location list used without " |
20754 | "specifying the CU base address.")); | |
4c2df51b | 20755 | |
f1e6e072 TT |
20756 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20757 | ? dwarf2_loclist_block_index | |
20758 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
20759 | SYMBOL_LOCATION_BATON (sym) = baton; |
20760 | } | |
20761 | else | |
20762 | { | |
20763 | struct dwarf2_locexpr_baton *baton; | |
20764 | ||
bb5ed363 | 20765 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20766 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
20767 | baton->per_cu = cu->per_cu; |
20768 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
20769 | |
20770 | if (attr_form_is_block (attr)) | |
20771 | { | |
20772 | /* Note that we're just copying the block's data pointer | |
20773 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
20774 | info_buffer for SYM's objfile; right now we never release |
20775 | that buffer, but when we do clean up properly this may | |
20776 | need to change. */ | |
0d53c4c4 DJ |
20777 | baton->size = DW_BLOCK (attr)->size; |
20778 | baton->data = DW_BLOCK (attr)->data; | |
20779 | } | |
20780 | else | |
20781 | { | |
20782 | dwarf2_invalid_attrib_class_complaint ("location description", | |
20783 | SYMBOL_NATURAL_NAME (sym)); | |
20784 | baton->size = 0; | |
0d53c4c4 | 20785 | } |
6e70227d | 20786 | |
f1e6e072 TT |
20787 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20788 | ? dwarf2_locexpr_block_index | |
20789 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
20790 | SYMBOL_LOCATION_BATON (sym) = baton; |
20791 | } | |
4c2df51b | 20792 | } |
6502dd73 | 20793 | |
9aa1f1e3 TT |
20794 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
20795 | came from a separate debuginfo file, then the master objfile is | |
20796 | returned. */ | |
ae0d2f24 UW |
20797 | |
20798 | struct objfile * | |
20799 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
20800 | { | |
9291a0cd | 20801 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
20802 | |
20803 | /* Return the master objfile, so that we can report and look up the | |
20804 | correct file containing this variable. */ | |
20805 | if (objfile->separate_debug_objfile_backlink) | |
20806 | objfile = objfile->separate_debug_objfile_backlink; | |
20807 | ||
20808 | return objfile; | |
20809 | } | |
20810 | ||
96408a79 SA |
20811 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
20812 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
20813 | CU_HEADERP first. */ | |
20814 | ||
20815 | static const struct comp_unit_head * | |
20816 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
20817 | struct dwarf2_per_cu_data *per_cu) | |
20818 | { | |
d521ce57 | 20819 | const gdb_byte *info_ptr; |
96408a79 SA |
20820 | |
20821 | if (per_cu->cu) | |
20822 | return &per_cu->cu->header; | |
20823 | ||
8a0459fd | 20824 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
20825 | |
20826 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 20827 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
20828 | |
20829 | return cu_headerp; | |
20830 | } | |
20831 | ||
ae0d2f24 UW |
20832 | /* Return the address size given in the compilation unit header for CU. */ |
20833 | ||
98714339 | 20834 | int |
ae0d2f24 UW |
20835 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
20836 | { | |
96408a79 SA |
20837 | struct comp_unit_head cu_header_local; |
20838 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 20839 | |
96408a79 SA |
20840 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
20841 | ||
20842 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
20843 | } |
20844 | ||
9eae7c52 TT |
20845 | /* Return the offset size given in the compilation unit header for CU. */ |
20846 | ||
20847 | int | |
20848 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
20849 | { | |
96408a79 SA |
20850 | struct comp_unit_head cu_header_local; |
20851 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 20852 | |
96408a79 SA |
20853 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
20854 | ||
20855 | return cu_headerp->offset_size; | |
20856 | } | |
20857 | ||
20858 | /* See its dwarf2loc.h declaration. */ | |
20859 | ||
20860 | int | |
20861 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
20862 | { | |
20863 | struct comp_unit_head cu_header_local; | |
20864 | const struct comp_unit_head *cu_headerp; | |
20865 | ||
20866 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
20867 | ||
20868 | if (cu_headerp->version == 2) | |
20869 | return cu_headerp->addr_size; | |
20870 | else | |
20871 | return cu_headerp->offset_size; | |
181cebd4 JK |
20872 | } |
20873 | ||
9aa1f1e3 TT |
20874 | /* Return the text offset of the CU. The returned offset comes from |
20875 | this CU's objfile. If this objfile came from a separate debuginfo | |
20876 | file, then the offset may be different from the corresponding | |
20877 | offset in the parent objfile. */ | |
20878 | ||
20879 | CORE_ADDR | |
20880 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
20881 | { | |
bb3fa9d0 | 20882 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
20883 | |
20884 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
20885 | } | |
20886 | ||
348e048f DE |
20887 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
20888 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
20889 | |
20890 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 20891 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 20892 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
20893 | struct objfile *objfile) |
20894 | { | |
20895 | struct dwarf2_per_cu_data *this_cu; | |
20896 | int low, high; | |
36586728 | 20897 | const sect_offset *cu_off; |
ae038cb0 | 20898 | |
ae038cb0 DJ |
20899 | low = 0; |
20900 | high = dwarf2_per_objfile->n_comp_units - 1; | |
20901 | while (high > low) | |
20902 | { | |
36586728 | 20903 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 20904 | int mid = low + (high - low) / 2; |
9a619af0 | 20905 | |
36586728 TT |
20906 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
20907 | cu_off = &mid_cu->offset; | |
20908 | if (mid_cu->is_dwz > offset_in_dwz | |
20909 | || (mid_cu->is_dwz == offset_in_dwz | |
20910 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
20911 | high = mid; |
20912 | else | |
20913 | low = mid + 1; | |
20914 | } | |
20915 | gdb_assert (low == high); | |
36586728 TT |
20916 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
20917 | cu_off = &this_cu->offset; | |
20918 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 20919 | { |
36586728 | 20920 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
20921 | error (_("Dwarf Error: could not find partial DIE containing " |
20922 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 20923 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 20924 | |
b64f50a1 JK |
20925 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
20926 | <= offset.sect_off); | |
ae038cb0 DJ |
20927 | return dwarf2_per_objfile->all_comp_units[low-1]; |
20928 | } | |
20929 | else | |
20930 | { | |
20931 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
20932 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
20933 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
20934 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
20935 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
20936 | return this_cu; |
20937 | } | |
20938 | } | |
20939 | ||
23745b47 | 20940 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 20941 | |
9816fde3 | 20942 | static void |
23745b47 | 20943 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 20944 | { |
9816fde3 | 20945 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
20946 | per_cu->cu = cu; |
20947 | cu->per_cu = per_cu; | |
20948 | cu->objfile = per_cu->objfile; | |
93311388 | 20949 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
20950 | } |
20951 | ||
20952 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
20953 | ||
20954 | static void | |
95554aad TT |
20955 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
20956 | enum language pretend_language) | |
9816fde3 JK |
20957 | { |
20958 | struct attribute *attr; | |
20959 | ||
20960 | /* Set the language we're debugging. */ | |
20961 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
20962 | if (attr) | |
20963 | set_cu_language (DW_UNSND (attr), cu); | |
20964 | else | |
9cded63f | 20965 | { |
95554aad | 20966 | cu->language = pretend_language; |
9cded63f TT |
20967 | cu->language_defn = language_def (cu->language); |
20968 | } | |
dee91e82 DE |
20969 | |
20970 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
20971 | if (attr) | |
20972 | cu->producer = DW_STRING (attr); | |
93311388 DE |
20973 | } |
20974 | ||
ae038cb0 DJ |
20975 | /* Release one cached compilation unit, CU. We unlink it from the tree |
20976 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
20977 | the caller is responsible for that. |
20978 | NOTE: DATA is a void * because this function is also used as a | |
20979 | cleanup routine. */ | |
ae038cb0 DJ |
20980 | |
20981 | static void | |
68dc6402 | 20982 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
20983 | { |
20984 | struct dwarf2_cu *cu = data; | |
20985 | ||
23745b47 DE |
20986 | gdb_assert (cu->per_cu != NULL); |
20987 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
20988 | cu->per_cu = NULL; |
20989 | ||
20990 | obstack_free (&cu->comp_unit_obstack, NULL); | |
20991 | ||
20992 | xfree (cu); | |
20993 | } | |
20994 | ||
72bf9492 | 20995 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 20996 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 20997 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
20998 | |
20999 | static void | |
21000 | free_stack_comp_unit (void *data) | |
21001 | { | |
21002 | struct dwarf2_cu *cu = data; | |
21003 | ||
23745b47 DE |
21004 | gdb_assert (cu->per_cu != NULL); |
21005 | cu->per_cu->cu = NULL; | |
21006 | cu->per_cu = NULL; | |
21007 | ||
72bf9492 DJ |
21008 | obstack_free (&cu->comp_unit_obstack, NULL); |
21009 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
21010 | } |
21011 | ||
21012 | /* Free all cached compilation units. */ | |
21013 | ||
21014 | static void | |
21015 | free_cached_comp_units (void *data) | |
21016 | { | |
21017 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21018 | ||
21019 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21020 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21021 | while (per_cu != NULL) | |
21022 | { | |
21023 | struct dwarf2_per_cu_data *next_cu; | |
21024 | ||
21025 | next_cu = per_cu->cu->read_in_chain; | |
21026 | ||
68dc6402 | 21027 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21028 | *last_chain = next_cu; |
21029 | ||
21030 | per_cu = next_cu; | |
21031 | } | |
21032 | } | |
21033 | ||
21034 | /* Increase the age counter on each cached compilation unit, and free | |
21035 | any that are too old. */ | |
21036 | ||
21037 | static void | |
21038 | age_cached_comp_units (void) | |
21039 | { | |
21040 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21041 | ||
21042 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
21043 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21044 | while (per_cu != NULL) | |
21045 | { | |
21046 | per_cu->cu->last_used ++; | |
21047 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
21048 | dwarf2_mark (per_cu->cu); | |
21049 | per_cu = per_cu->cu->read_in_chain; | |
21050 | } | |
21051 | ||
21052 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21053 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21054 | while (per_cu != NULL) | |
21055 | { | |
21056 | struct dwarf2_per_cu_data *next_cu; | |
21057 | ||
21058 | next_cu = per_cu->cu->read_in_chain; | |
21059 | ||
21060 | if (!per_cu->cu->mark) | |
21061 | { | |
68dc6402 | 21062 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21063 | *last_chain = next_cu; |
21064 | } | |
21065 | else | |
21066 | last_chain = &per_cu->cu->read_in_chain; | |
21067 | ||
21068 | per_cu = next_cu; | |
21069 | } | |
21070 | } | |
21071 | ||
21072 | /* Remove a single compilation unit from the cache. */ | |
21073 | ||
21074 | static void | |
dee91e82 | 21075 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
21076 | { |
21077 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21078 | ||
21079 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21080 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21081 | while (per_cu != NULL) | |
21082 | { | |
21083 | struct dwarf2_per_cu_data *next_cu; | |
21084 | ||
21085 | next_cu = per_cu->cu->read_in_chain; | |
21086 | ||
dee91e82 | 21087 | if (per_cu == target_per_cu) |
ae038cb0 | 21088 | { |
68dc6402 | 21089 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 21090 | per_cu->cu = NULL; |
ae038cb0 DJ |
21091 | *last_chain = next_cu; |
21092 | break; | |
21093 | } | |
21094 | else | |
21095 | last_chain = &per_cu->cu->read_in_chain; | |
21096 | ||
21097 | per_cu = next_cu; | |
21098 | } | |
21099 | } | |
21100 | ||
fe3e1990 DJ |
21101 | /* Release all extra memory associated with OBJFILE. */ |
21102 | ||
21103 | void | |
21104 | dwarf2_free_objfile (struct objfile *objfile) | |
21105 | { | |
21106 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
21107 | ||
21108 | if (dwarf2_per_objfile == NULL) | |
21109 | return; | |
21110 | ||
21111 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
21112 | free_cached_comp_units (NULL); | |
21113 | ||
7b9f3c50 DE |
21114 | if (dwarf2_per_objfile->quick_file_names_table) |
21115 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 21116 | |
fe3e1990 DJ |
21117 | /* Everything else should be on the objfile obstack. */ |
21118 | } | |
21119 | ||
dee91e82 DE |
21120 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
21121 | We store these in a hash table separate from the DIEs, and preserve them | |
21122 | when the DIEs are flushed out of cache. | |
21123 | ||
21124 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 21125 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
21126 | or the type may come from a DWO file. Furthermore, while it's more logical |
21127 | to use per_cu->section+offset, with Fission the section with the data is in | |
21128 | the DWO file but we don't know that section at the point we need it. | |
21129 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
21130 | because we can enter the lookup routine, get_die_type_at_offset, from | |
21131 | outside this file, and thus won't necessarily have PER_CU->cu. | |
21132 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 21133 | |
dee91e82 | 21134 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 21135 | { |
dee91e82 | 21136 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 21137 | sect_offset offset; |
1c379e20 DJ |
21138 | struct type *type; |
21139 | }; | |
21140 | ||
dee91e82 | 21141 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21142 | |
21143 | static hashval_t | |
dee91e82 | 21144 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 21145 | { |
dee91e82 | 21146 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 21147 | |
dee91e82 | 21148 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
21149 | } |
21150 | ||
dee91e82 | 21151 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21152 | |
21153 | static int | |
dee91e82 | 21154 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 21155 | { |
dee91e82 DE |
21156 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
21157 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 21158 | |
dee91e82 DE |
21159 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
21160 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
21161 | } |
21162 | ||
21163 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
21164 | table if necessary. For convenience, return TYPE. |
21165 | ||
21166 | The DIEs reading must have careful ordering to: | |
21167 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
21168 | reading current DIE. | |
21169 | * Not trying to dereference contents of still incompletely read in types | |
21170 | while reading in other DIEs. | |
21171 | * Enable referencing still incompletely read in types just by a pointer to | |
21172 | the type without accessing its fields. | |
21173 | ||
21174 | Therefore caller should follow these rules: | |
21175 | * Try to fetch any prerequisite types we may need to build this DIE type | |
21176 | before building the type and calling set_die_type. | |
e71ec853 | 21177 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
21178 | possible before fetching more types to complete the current type. |
21179 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 21180 | |
f792889a | 21181 | static struct type * |
1c379e20 DJ |
21182 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
21183 | { | |
dee91e82 | 21184 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 21185 | struct objfile *objfile = cu->objfile; |
1c379e20 | 21186 | |
b4ba55a1 JB |
21187 | /* For Ada types, make sure that the gnat-specific data is always |
21188 | initialized (if not already set). There are a few types where | |
21189 | we should not be doing so, because the type-specific area is | |
21190 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
21191 | where the type-specific area is used to store the floatformat). | |
21192 | But this is not a problem, because the gnat-specific information | |
21193 | is actually not needed for these types. */ | |
21194 | if (need_gnat_info (cu) | |
21195 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
21196 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
21197 | && !HAVE_GNAT_AUX_INFO (type)) | |
21198 | INIT_GNAT_SPECIFIC (type); | |
21199 | ||
dee91e82 | 21200 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21201 | { |
dee91e82 DE |
21202 | dwarf2_per_objfile->die_type_hash = |
21203 | htab_create_alloc_ex (127, | |
21204 | per_cu_offset_and_type_hash, | |
21205 | per_cu_offset_and_type_eq, | |
21206 | NULL, | |
21207 | &objfile->objfile_obstack, | |
21208 | hashtab_obstack_allocate, | |
21209 | dummy_obstack_deallocate); | |
f792889a | 21210 | } |
1c379e20 | 21211 | |
dee91e82 | 21212 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
21213 | ofs.offset = die->offset; |
21214 | ofs.type = type; | |
dee91e82 DE |
21215 | slot = (struct dwarf2_per_cu_offset_and_type **) |
21216 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
21217 | if (*slot) |
21218 | complaint (&symfile_complaints, | |
21219 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 21220 | die->offset.sect_off); |
673bfd45 | 21221 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 21222 | **slot = ofs; |
f792889a | 21223 | return type; |
1c379e20 DJ |
21224 | } |
21225 | ||
02142a6c DE |
21226 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
21227 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
21228 | |
21229 | static struct type * | |
b64f50a1 | 21230 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 21231 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 21232 | { |
dee91e82 | 21233 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 21234 | |
dee91e82 | 21235 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21236 | return NULL; |
1c379e20 | 21237 | |
dee91e82 | 21238 | ofs.per_cu = per_cu; |
673bfd45 | 21239 | ofs.offset = offset; |
dee91e82 | 21240 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
21241 | if (slot) |
21242 | return slot->type; | |
21243 | else | |
21244 | return NULL; | |
21245 | } | |
21246 | ||
02142a6c | 21247 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
21248 | or return NULL if DIE does not have a saved type. */ |
21249 | ||
21250 | static struct type * | |
21251 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
21252 | { | |
21253 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
21254 | } | |
21255 | ||
10b3939b DJ |
21256 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
21257 | ||
21258 | static void | |
21259 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
21260 | struct dwarf2_per_cu_data *ref_per_cu) | |
21261 | { | |
21262 | void **slot; | |
21263 | ||
21264 | if (cu->dependencies == NULL) | |
21265 | cu->dependencies | |
21266 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
21267 | NULL, &cu->comp_unit_obstack, | |
21268 | hashtab_obstack_allocate, | |
21269 | dummy_obstack_deallocate); | |
21270 | ||
21271 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
21272 | if (*slot == NULL) | |
21273 | *slot = ref_per_cu; | |
21274 | } | |
1c379e20 | 21275 | |
f504f079 DE |
21276 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
21277 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
21278 | cache that we must keep because we are keeping CU. */ |
21279 | ||
10b3939b DJ |
21280 | static int |
21281 | dwarf2_mark_helper (void **slot, void *data) | |
21282 | { | |
21283 | struct dwarf2_per_cu_data *per_cu; | |
21284 | ||
21285 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
21286 | |
21287 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
21288 | reading of the chain. As such dependencies remain valid it is not much | |
21289 | useful to track and undo them during QUIT cleanups. */ | |
21290 | if (per_cu->cu == NULL) | |
21291 | return 1; | |
21292 | ||
10b3939b DJ |
21293 | if (per_cu->cu->mark) |
21294 | return 1; | |
21295 | per_cu->cu->mark = 1; | |
21296 | ||
21297 | if (per_cu->cu->dependencies != NULL) | |
21298 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
21299 | ||
21300 | return 1; | |
21301 | } | |
21302 | ||
f504f079 DE |
21303 | /* Set the mark field in CU and in every other compilation unit in the |
21304 | cache that we must keep because we are keeping CU. */ | |
21305 | ||
ae038cb0 DJ |
21306 | static void |
21307 | dwarf2_mark (struct dwarf2_cu *cu) | |
21308 | { | |
21309 | if (cu->mark) | |
21310 | return; | |
21311 | cu->mark = 1; | |
10b3939b DJ |
21312 | if (cu->dependencies != NULL) |
21313 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
21314 | } |
21315 | ||
21316 | static void | |
21317 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
21318 | { | |
21319 | while (per_cu) | |
21320 | { | |
21321 | per_cu->cu->mark = 0; | |
21322 | per_cu = per_cu->cu->read_in_chain; | |
21323 | } | |
72bf9492 DJ |
21324 | } |
21325 | ||
72bf9492 DJ |
21326 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
21327 | is its offset in .debug_info for this objfile. */ | |
21328 | ||
21329 | static hashval_t | |
21330 | partial_die_hash (const void *item) | |
21331 | { | |
21332 | const struct partial_die_info *part_die = item; | |
9a619af0 | 21333 | |
b64f50a1 | 21334 | return part_die->offset.sect_off; |
72bf9492 DJ |
21335 | } |
21336 | ||
21337 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
21338 | are equal if they have the same offset. */ | |
21339 | ||
21340 | static int | |
21341 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
21342 | { | |
21343 | const struct partial_die_info *part_die_lhs = item_lhs; | |
21344 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 21345 | |
b64f50a1 | 21346 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
21347 | } |
21348 | ||
ae038cb0 DJ |
21349 | static struct cmd_list_element *set_dwarf2_cmdlist; |
21350 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
21351 | ||
21352 | static void | |
21353 | set_dwarf2_cmd (char *args, int from_tty) | |
21354 | { | |
21355 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
21356 | } | |
21357 | ||
21358 | static void | |
21359 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 21360 | { |
ae038cb0 DJ |
21361 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
21362 | } | |
21363 | ||
4bf44c1c | 21364 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
21365 | |
21366 | static void | |
c1bd65d0 | 21367 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
21368 | { |
21369 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 21370 | int ix; |
8b70b953 | 21371 | |
626f2d1c TT |
21372 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
21373 | cleaning up. */ | |
21374 | dwarf2_per_objfile = NULL; | |
21375 | ||
59b0c7c1 JB |
21376 | for (ix = 0; ix < data->n_comp_units; ++ix) |
21377 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 21378 | |
59b0c7c1 | 21379 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 21380 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
21381 | data->all_type_units[ix]->per_cu.imported_symtabs); |
21382 | xfree (data->all_type_units); | |
95554aad | 21383 | |
8b70b953 | 21384 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
21385 | |
21386 | if (data->dwo_files) | |
21387 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
21388 | if (data->dwp_file) |
21389 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
21390 | |
21391 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
21392 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
21393 | } |
21394 | ||
21395 | \f | |
ae2de4f8 | 21396 | /* The "save gdb-index" command. */ |
9291a0cd TT |
21397 | |
21398 | /* The contents of the hash table we create when building the string | |
21399 | table. */ | |
21400 | struct strtab_entry | |
21401 | { | |
21402 | offset_type offset; | |
21403 | const char *str; | |
21404 | }; | |
21405 | ||
559a7a62 JK |
21406 | /* Hash function for a strtab_entry. |
21407 | ||
21408 | Function is used only during write_hash_table so no index format backward | |
21409 | compatibility is needed. */ | |
b89be57b | 21410 | |
9291a0cd TT |
21411 | static hashval_t |
21412 | hash_strtab_entry (const void *e) | |
21413 | { | |
21414 | const struct strtab_entry *entry = e; | |
559a7a62 | 21415 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
21416 | } |
21417 | ||
21418 | /* Equality function for a strtab_entry. */ | |
b89be57b | 21419 | |
9291a0cd TT |
21420 | static int |
21421 | eq_strtab_entry (const void *a, const void *b) | |
21422 | { | |
21423 | const struct strtab_entry *ea = a; | |
21424 | const struct strtab_entry *eb = b; | |
21425 | return !strcmp (ea->str, eb->str); | |
21426 | } | |
21427 | ||
21428 | /* Create a strtab_entry hash table. */ | |
b89be57b | 21429 | |
9291a0cd TT |
21430 | static htab_t |
21431 | create_strtab (void) | |
21432 | { | |
21433 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
21434 | xfree, xcalloc, xfree); | |
21435 | } | |
21436 | ||
21437 | /* Add a string to the constant pool. Return the string's offset in | |
21438 | host order. */ | |
b89be57b | 21439 | |
9291a0cd TT |
21440 | static offset_type |
21441 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
21442 | { | |
21443 | void **slot; | |
21444 | struct strtab_entry entry; | |
21445 | struct strtab_entry *result; | |
21446 | ||
21447 | entry.str = str; | |
21448 | slot = htab_find_slot (table, &entry, INSERT); | |
21449 | if (*slot) | |
21450 | result = *slot; | |
21451 | else | |
21452 | { | |
21453 | result = XNEW (struct strtab_entry); | |
21454 | result->offset = obstack_object_size (cpool); | |
21455 | result->str = str; | |
21456 | obstack_grow_str0 (cpool, str); | |
21457 | *slot = result; | |
21458 | } | |
21459 | return result->offset; | |
21460 | } | |
21461 | ||
21462 | /* An entry in the symbol table. */ | |
21463 | struct symtab_index_entry | |
21464 | { | |
21465 | /* The name of the symbol. */ | |
21466 | const char *name; | |
21467 | /* The offset of the name in the constant pool. */ | |
21468 | offset_type index_offset; | |
21469 | /* A sorted vector of the indices of all the CUs that hold an object | |
21470 | of this name. */ | |
21471 | VEC (offset_type) *cu_indices; | |
21472 | }; | |
21473 | ||
21474 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
21475 | struct mapped_symtab | |
21476 | { | |
21477 | offset_type n_elements; | |
21478 | offset_type size; | |
21479 | struct symtab_index_entry **data; | |
21480 | }; | |
21481 | ||
21482 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 21483 | |
9291a0cd TT |
21484 | static hashval_t |
21485 | hash_symtab_entry (const void *e) | |
21486 | { | |
21487 | const struct symtab_index_entry *entry = e; | |
21488 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
21489 | sizeof (offset_type) * VEC_length (offset_type, | |
21490 | entry->cu_indices), | |
21491 | 0); | |
21492 | } | |
21493 | ||
21494 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 21495 | |
9291a0cd TT |
21496 | static int |
21497 | eq_symtab_entry (const void *a, const void *b) | |
21498 | { | |
21499 | const struct symtab_index_entry *ea = a; | |
21500 | const struct symtab_index_entry *eb = b; | |
21501 | int len = VEC_length (offset_type, ea->cu_indices); | |
21502 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
21503 | return 0; | |
21504 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
21505 | VEC_address (offset_type, eb->cu_indices), | |
21506 | sizeof (offset_type) * len); | |
21507 | } | |
21508 | ||
21509 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 21510 | |
9291a0cd TT |
21511 | static void |
21512 | delete_symtab_entry (void *p) | |
21513 | { | |
21514 | struct symtab_index_entry *entry = p; | |
21515 | VEC_free (offset_type, entry->cu_indices); | |
21516 | xfree (entry); | |
21517 | } | |
21518 | ||
21519 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 21520 | |
9291a0cd | 21521 | static htab_t |
3876f04e | 21522 | create_symbol_hash_table (void) |
9291a0cd TT |
21523 | { |
21524 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
21525 | delete_symtab_entry, xcalloc, xfree); | |
21526 | } | |
21527 | ||
21528 | /* Create a new mapped symtab object. */ | |
b89be57b | 21529 | |
9291a0cd TT |
21530 | static struct mapped_symtab * |
21531 | create_mapped_symtab (void) | |
21532 | { | |
21533 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
21534 | symtab->n_elements = 0; | |
21535 | symtab->size = 1024; | |
21536 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21537 | return symtab; | |
21538 | } | |
21539 | ||
21540 | /* Destroy a mapped_symtab. */ | |
b89be57b | 21541 | |
9291a0cd TT |
21542 | static void |
21543 | cleanup_mapped_symtab (void *p) | |
21544 | { | |
21545 | struct mapped_symtab *symtab = p; | |
21546 | /* The contents of the array are freed when the other hash table is | |
21547 | destroyed. */ | |
21548 | xfree (symtab->data); | |
21549 | xfree (symtab); | |
21550 | } | |
21551 | ||
21552 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
21553 | the slot. |
21554 | ||
21555 | Function is used only during write_hash_table so no index format backward | |
21556 | compatibility is needed. */ | |
b89be57b | 21557 | |
9291a0cd TT |
21558 | static struct symtab_index_entry ** |
21559 | find_slot (struct mapped_symtab *symtab, const char *name) | |
21560 | { | |
559a7a62 | 21561 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
21562 | |
21563 | index = hash & (symtab->size - 1); | |
21564 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
21565 | ||
21566 | for (;;) | |
21567 | { | |
21568 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
21569 | return &symtab->data[index]; | |
21570 | index = (index + step) & (symtab->size - 1); | |
21571 | } | |
21572 | } | |
21573 | ||
21574 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 21575 | |
9291a0cd TT |
21576 | static void |
21577 | hash_expand (struct mapped_symtab *symtab) | |
21578 | { | |
21579 | offset_type old_size = symtab->size; | |
21580 | offset_type i; | |
21581 | struct symtab_index_entry **old_entries = symtab->data; | |
21582 | ||
21583 | symtab->size *= 2; | |
21584 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21585 | ||
21586 | for (i = 0; i < old_size; ++i) | |
21587 | { | |
21588 | if (old_entries[i]) | |
21589 | { | |
21590 | struct symtab_index_entry **slot = find_slot (symtab, | |
21591 | old_entries[i]->name); | |
21592 | *slot = old_entries[i]; | |
21593 | } | |
21594 | } | |
21595 | ||
21596 | xfree (old_entries); | |
21597 | } | |
21598 | ||
156942c7 DE |
21599 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
21600 | CU_INDEX is the index of the CU in which the symbol appears. | |
21601 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 21602 | |
9291a0cd TT |
21603 | static void |
21604 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 21605 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
21606 | offset_type cu_index) |
21607 | { | |
21608 | struct symtab_index_entry **slot; | |
156942c7 | 21609 | offset_type cu_index_and_attrs; |
9291a0cd TT |
21610 | |
21611 | ++symtab->n_elements; | |
21612 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
21613 | hash_expand (symtab); | |
21614 | ||
21615 | slot = find_slot (symtab, name); | |
21616 | if (!*slot) | |
21617 | { | |
21618 | *slot = XNEW (struct symtab_index_entry); | |
21619 | (*slot)->name = name; | |
156942c7 | 21620 | /* index_offset is set later. */ |
9291a0cd TT |
21621 | (*slot)->cu_indices = NULL; |
21622 | } | |
156942c7 DE |
21623 | |
21624 | cu_index_and_attrs = 0; | |
21625 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
21626 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
21627 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
21628 | ||
21629 | /* We don't want to record an index value twice as we want to avoid the | |
21630 | duplication. | |
21631 | We process all global symbols and then all static symbols | |
21632 | (which would allow us to avoid the duplication by only having to check | |
21633 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
21634 | To keep things simple we don't worry about the duplication here and | |
21635 | sort and uniqufy the list after we've processed all symbols. */ | |
21636 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
21637 | } | |
21638 | ||
21639 | /* qsort helper routine for uniquify_cu_indices. */ | |
21640 | ||
21641 | static int | |
21642 | offset_type_compare (const void *ap, const void *bp) | |
21643 | { | |
21644 | offset_type a = *(offset_type *) ap; | |
21645 | offset_type b = *(offset_type *) bp; | |
21646 | ||
21647 | return (a > b) - (b > a); | |
21648 | } | |
21649 | ||
21650 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
21651 | ||
21652 | static void | |
21653 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
21654 | { | |
21655 | int i; | |
21656 | ||
21657 | for (i = 0; i < symtab->size; ++i) | |
21658 | { | |
21659 | struct symtab_index_entry *entry = symtab->data[i]; | |
21660 | ||
21661 | if (entry | |
21662 | && entry->cu_indices != NULL) | |
21663 | { | |
21664 | unsigned int next_to_insert, next_to_check; | |
21665 | offset_type last_value; | |
21666 | ||
21667 | qsort (VEC_address (offset_type, entry->cu_indices), | |
21668 | VEC_length (offset_type, entry->cu_indices), | |
21669 | sizeof (offset_type), offset_type_compare); | |
21670 | ||
21671 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
21672 | next_to_insert = 1; | |
21673 | for (next_to_check = 1; | |
21674 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
21675 | ++next_to_check) | |
21676 | { | |
21677 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
21678 | != last_value) | |
21679 | { | |
21680 | last_value = VEC_index (offset_type, entry->cu_indices, | |
21681 | next_to_check); | |
21682 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
21683 | last_value); | |
21684 | ++next_to_insert; | |
21685 | } | |
21686 | } | |
21687 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
21688 | } | |
21689 | } | |
9291a0cd TT |
21690 | } |
21691 | ||
21692 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 21693 | |
9291a0cd | 21694 | static offset_type |
3876f04e | 21695 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
21696 | struct symtab_index_entry *entry) |
21697 | { | |
21698 | void **slot; | |
21699 | ||
3876f04e | 21700 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
21701 | if (!*slot) |
21702 | { | |
21703 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
21704 | offset_type val = MAYBE_SWAP (len); | |
21705 | offset_type iter; | |
21706 | int i; | |
21707 | ||
21708 | *slot = entry; | |
21709 | entry->index_offset = obstack_object_size (cpool); | |
21710 | ||
21711 | obstack_grow (cpool, &val, sizeof (val)); | |
21712 | for (i = 0; | |
21713 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
21714 | ++i) | |
21715 | { | |
21716 | val = MAYBE_SWAP (iter); | |
21717 | obstack_grow (cpool, &val, sizeof (val)); | |
21718 | } | |
21719 | } | |
21720 | else | |
21721 | { | |
21722 | struct symtab_index_entry *old_entry = *slot; | |
21723 | entry->index_offset = old_entry->index_offset; | |
21724 | entry = old_entry; | |
21725 | } | |
21726 | return entry->index_offset; | |
21727 | } | |
21728 | ||
21729 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
21730 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 21731 | |
9291a0cd TT |
21732 | static void |
21733 | write_hash_table (struct mapped_symtab *symtab, | |
21734 | struct obstack *output, struct obstack *cpool) | |
21735 | { | |
21736 | offset_type i; | |
3876f04e | 21737 | htab_t symbol_hash_table; |
9291a0cd TT |
21738 | htab_t str_table; |
21739 | ||
3876f04e | 21740 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 21741 | str_table = create_strtab (); |
3876f04e | 21742 | |
9291a0cd TT |
21743 | /* We add all the index vectors to the constant pool first, to |
21744 | ensure alignment is ok. */ | |
21745 | for (i = 0; i < symtab->size; ++i) | |
21746 | { | |
21747 | if (symtab->data[i]) | |
3876f04e | 21748 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
21749 | } |
21750 | ||
21751 | /* Now write out the hash table. */ | |
21752 | for (i = 0; i < symtab->size; ++i) | |
21753 | { | |
21754 | offset_type str_off, vec_off; | |
21755 | ||
21756 | if (symtab->data[i]) | |
21757 | { | |
21758 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
21759 | vec_off = symtab->data[i]->index_offset; | |
21760 | } | |
21761 | else | |
21762 | { | |
21763 | /* While 0 is a valid constant pool index, it is not valid | |
21764 | to have 0 for both offsets. */ | |
21765 | str_off = 0; | |
21766 | vec_off = 0; | |
21767 | } | |
21768 | ||
21769 | str_off = MAYBE_SWAP (str_off); | |
21770 | vec_off = MAYBE_SWAP (vec_off); | |
21771 | ||
21772 | obstack_grow (output, &str_off, sizeof (str_off)); | |
21773 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
21774 | } | |
21775 | ||
21776 | htab_delete (str_table); | |
3876f04e | 21777 | htab_delete (symbol_hash_table); |
9291a0cd TT |
21778 | } |
21779 | ||
0a5429f6 DE |
21780 | /* Struct to map psymtab to CU index in the index file. */ |
21781 | struct psymtab_cu_index_map | |
21782 | { | |
21783 | struct partial_symtab *psymtab; | |
21784 | unsigned int cu_index; | |
21785 | }; | |
21786 | ||
21787 | static hashval_t | |
21788 | hash_psymtab_cu_index (const void *item) | |
21789 | { | |
21790 | const struct psymtab_cu_index_map *map = item; | |
21791 | ||
21792 | return htab_hash_pointer (map->psymtab); | |
21793 | } | |
21794 | ||
21795 | static int | |
21796 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
21797 | { | |
21798 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
21799 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
21800 | ||
21801 | return lhs->psymtab == rhs->psymtab; | |
21802 | } | |
21803 | ||
21804 | /* Helper struct for building the address table. */ | |
21805 | struct addrmap_index_data | |
21806 | { | |
21807 | struct objfile *objfile; | |
21808 | struct obstack *addr_obstack; | |
21809 | htab_t cu_index_htab; | |
21810 | ||
21811 | /* Non-zero if the previous_* fields are valid. | |
21812 | We can't write an entry until we see the next entry (since it is only then | |
21813 | that we know the end of the entry). */ | |
21814 | int previous_valid; | |
21815 | /* Index of the CU in the table of all CUs in the index file. */ | |
21816 | unsigned int previous_cu_index; | |
0963b4bd | 21817 | /* Start address of the CU. */ |
0a5429f6 DE |
21818 | CORE_ADDR previous_cu_start; |
21819 | }; | |
21820 | ||
21821 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 21822 | |
9291a0cd | 21823 | static void |
0a5429f6 DE |
21824 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
21825 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 21826 | { |
0a5429f6 | 21827 | offset_type cu_index_to_write; |
948f8e3d | 21828 | gdb_byte addr[8]; |
9291a0cd TT |
21829 | CORE_ADDR baseaddr; |
21830 | ||
21831 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21832 | ||
0a5429f6 DE |
21833 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
21834 | obstack_grow (obstack, addr, 8); | |
21835 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
21836 | obstack_grow (obstack, addr, 8); | |
21837 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
21838 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
21839 | } | |
21840 | ||
21841 | /* Worker function for traversing an addrmap to build the address table. */ | |
21842 | ||
21843 | static int | |
21844 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
21845 | { | |
21846 | struct addrmap_index_data *data = datap; | |
21847 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
21848 | |
21849 | if (data->previous_valid) | |
21850 | add_address_entry (data->objfile, data->addr_obstack, | |
21851 | data->previous_cu_start, start_addr, | |
21852 | data->previous_cu_index); | |
21853 | ||
21854 | data->previous_cu_start = start_addr; | |
21855 | if (pst != NULL) | |
21856 | { | |
21857 | struct psymtab_cu_index_map find_map, *map; | |
21858 | find_map.psymtab = pst; | |
21859 | map = htab_find (data->cu_index_htab, &find_map); | |
21860 | gdb_assert (map != NULL); | |
21861 | data->previous_cu_index = map->cu_index; | |
21862 | data->previous_valid = 1; | |
21863 | } | |
21864 | else | |
21865 | data->previous_valid = 0; | |
21866 | ||
21867 | return 0; | |
21868 | } | |
21869 | ||
21870 | /* Write OBJFILE's address map to OBSTACK. | |
21871 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
21872 | in the index file. */ | |
21873 | ||
21874 | static void | |
21875 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
21876 | htab_t cu_index_htab) | |
21877 | { | |
21878 | struct addrmap_index_data addrmap_index_data; | |
21879 | ||
21880 | /* When writing the address table, we have to cope with the fact that | |
21881 | the addrmap iterator only provides the start of a region; we have to | |
21882 | wait until the next invocation to get the start of the next region. */ | |
21883 | ||
21884 | addrmap_index_data.objfile = objfile; | |
21885 | addrmap_index_data.addr_obstack = obstack; | |
21886 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
21887 | addrmap_index_data.previous_valid = 0; | |
21888 | ||
21889 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
21890 | &addrmap_index_data); | |
21891 | ||
21892 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
21893 | is valid, but we should still handle it. | |
21894 | The end address is recorded as the start of the next region, but that | |
21895 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
21896 | anyway. */ | |
21897 | if (addrmap_index_data.previous_valid) | |
21898 | add_address_entry (objfile, obstack, | |
21899 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
21900 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
21901 | } |
21902 | ||
156942c7 DE |
21903 | /* Return the symbol kind of PSYM. */ |
21904 | ||
21905 | static gdb_index_symbol_kind | |
21906 | symbol_kind (struct partial_symbol *psym) | |
21907 | { | |
21908 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
21909 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
21910 | ||
21911 | switch (domain) | |
21912 | { | |
21913 | case VAR_DOMAIN: | |
21914 | switch (aclass) | |
21915 | { | |
21916 | case LOC_BLOCK: | |
21917 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
21918 | case LOC_TYPEDEF: | |
21919 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
21920 | case LOC_COMPUTED: | |
21921 | case LOC_CONST_BYTES: | |
21922 | case LOC_OPTIMIZED_OUT: | |
21923 | case LOC_STATIC: | |
21924 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
21925 | case LOC_CONST: | |
21926 | /* Note: It's currently impossible to recognize psyms as enum values | |
21927 | short of reading the type info. For now punt. */ | |
21928 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
21929 | default: | |
21930 | /* There are other LOC_FOO values that one might want to classify | |
21931 | as variables, but dwarf2read.c doesn't currently use them. */ | |
21932 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
21933 | } | |
21934 | case STRUCT_DOMAIN: | |
21935 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
21936 | default: | |
21937 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
21938 | } | |
21939 | } | |
21940 | ||
9291a0cd | 21941 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 21942 | |
9291a0cd TT |
21943 | static void |
21944 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 21945 | htab_t psyms_seen, |
9291a0cd TT |
21946 | struct partial_symbol **psymp, |
21947 | int count, | |
987d643c TT |
21948 | offset_type cu_index, |
21949 | int is_static) | |
9291a0cd TT |
21950 | { |
21951 | for (; count-- > 0; ++psymp) | |
21952 | { | |
156942c7 DE |
21953 | struct partial_symbol *psym = *psymp; |
21954 | void **slot; | |
987d643c | 21955 | |
156942c7 | 21956 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 21957 | error (_("Ada is not currently supported by the index")); |
987d643c | 21958 | |
987d643c | 21959 | /* Only add a given psymbol once. */ |
156942c7 | 21960 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
21961 | if (!*slot) |
21962 | { | |
156942c7 DE |
21963 | gdb_index_symbol_kind kind = symbol_kind (psym); |
21964 | ||
21965 | *slot = psym; | |
21966 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
21967 | is_static, kind, cu_index); | |
987d643c | 21968 | } |
9291a0cd TT |
21969 | } |
21970 | } | |
21971 | ||
21972 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
21973 | exception if there is an error. */ | |
b89be57b | 21974 | |
9291a0cd TT |
21975 | static void |
21976 | write_obstack (FILE *file, struct obstack *obstack) | |
21977 | { | |
21978 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
21979 | file) | |
21980 | != obstack_object_size (obstack)) | |
21981 | error (_("couldn't data write to file")); | |
21982 | } | |
21983 | ||
21984 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 21985 | |
9291a0cd TT |
21986 | static void |
21987 | unlink_if_set (void *p) | |
21988 | { | |
21989 | char **filename = p; | |
21990 | if (*filename) | |
21991 | unlink (*filename); | |
21992 | } | |
21993 | ||
1fd400ff TT |
21994 | /* A helper struct used when iterating over debug_types. */ |
21995 | struct signatured_type_index_data | |
21996 | { | |
21997 | struct objfile *objfile; | |
21998 | struct mapped_symtab *symtab; | |
21999 | struct obstack *types_list; | |
987d643c | 22000 | htab_t psyms_seen; |
1fd400ff TT |
22001 | int cu_index; |
22002 | }; | |
22003 | ||
22004 | /* A helper function that writes a single signatured_type to an | |
22005 | obstack. */ | |
b89be57b | 22006 | |
1fd400ff TT |
22007 | static int |
22008 | write_one_signatured_type (void **slot, void *d) | |
22009 | { | |
22010 | struct signatured_type_index_data *info = d; | |
22011 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 22012 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
22013 | gdb_byte val[8]; |
22014 | ||
22015 | write_psymbols (info->symtab, | |
987d643c | 22016 | info->psyms_seen, |
3e43a32a MS |
22017 | info->objfile->global_psymbols.list |
22018 | + psymtab->globals_offset, | |
987d643c TT |
22019 | psymtab->n_global_syms, info->cu_index, |
22020 | 0); | |
1fd400ff | 22021 | write_psymbols (info->symtab, |
987d643c | 22022 | info->psyms_seen, |
3e43a32a MS |
22023 | info->objfile->static_psymbols.list |
22024 | + psymtab->statics_offset, | |
987d643c TT |
22025 | psymtab->n_static_syms, info->cu_index, |
22026 | 1); | |
1fd400ff | 22027 | |
b64f50a1 JK |
22028 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22029 | entry->per_cu.offset.sect_off); | |
1fd400ff | 22030 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
22031 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22032 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
22033 | obstack_grow (info->types_list, val, 8); |
22034 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
22035 | obstack_grow (info->types_list, val, 8); | |
22036 | ||
22037 | ++info->cu_index; | |
22038 | ||
22039 | return 1; | |
22040 | } | |
22041 | ||
95554aad TT |
22042 | /* Recurse into all "included" dependencies and write their symbols as |
22043 | if they appeared in this psymtab. */ | |
22044 | ||
22045 | static void | |
22046 | recursively_write_psymbols (struct objfile *objfile, | |
22047 | struct partial_symtab *psymtab, | |
22048 | struct mapped_symtab *symtab, | |
22049 | htab_t psyms_seen, | |
22050 | offset_type cu_index) | |
22051 | { | |
22052 | int i; | |
22053 | ||
22054 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
22055 | if (psymtab->dependencies[i]->user != NULL) | |
22056 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
22057 | symtab, psyms_seen, cu_index); | |
22058 | ||
22059 | write_psymbols (symtab, | |
22060 | psyms_seen, | |
22061 | objfile->global_psymbols.list + psymtab->globals_offset, | |
22062 | psymtab->n_global_syms, cu_index, | |
22063 | 0); | |
22064 | write_psymbols (symtab, | |
22065 | psyms_seen, | |
22066 | objfile->static_psymbols.list + psymtab->statics_offset, | |
22067 | psymtab->n_static_syms, cu_index, | |
22068 | 1); | |
22069 | } | |
22070 | ||
9291a0cd | 22071 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 22072 | |
9291a0cd TT |
22073 | static void |
22074 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
22075 | { | |
22076 | struct cleanup *cleanup; | |
22077 | char *filename, *cleanup_filename; | |
1fd400ff TT |
22078 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
22079 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
22080 | int i; |
22081 | FILE *out_file; | |
22082 | struct mapped_symtab *symtab; | |
22083 | offset_type val, size_of_contents, total_len; | |
22084 | struct stat st; | |
987d643c | 22085 | htab_t psyms_seen; |
0a5429f6 DE |
22086 | htab_t cu_index_htab; |
22087 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 22088 | |
9291a0cd TT |
22089 | if (dwarf2_per_objfile->using_index) |
22090 | error (_("Cannot use an index to create the index")); | |
22091 | ||
8b70b953 TT |
22092 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
22093 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
22094 | ||
260b681b DE |
22095 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
22096 | return; | |
22097 | ||
4262abfb JK |
22098 | if (stat (objfile_name (objfile), &st) < 0) |
22099 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 22100 | |
4262abfb | 22101 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
22102 | INDEX_SUFFIX, (char *) NULL); |
22103 | cleanup = make_cleanup (xfree, filename); | |
22104 | ||
614c279d | 22105 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
22106 | if (!out_file) |
22107 | error (_("Can't open `%s' for writing"), filename); | |
22108 | ||
22109 | cleanup_filename = filename; | |
22110 | make_cleanup (unlink_if_set, &cleanup_filename); | |
22111 | ||
22112 | symtab = create_mapped_symtab (); | |
22113 | make_cleanup (cleanup_mapped_symtab, symtab); | |
22114 | ||
22115 | obstack_init (&addr_obstack); | |
22116 | make_cleanup_obstack_free (&addr_obstack); | |
22117 | ||
22118 | obstack_init (&cu_list); | |
22119 | make_cleanup_obstack_free (&cu_list); | |
22120 | ||
1fd400ff TT |
22121 | obstack_init (&types_cu_list); |
22122 | make_cleanup_obstack_free (&types_cu_list); | |
22123 | ||
987d643c TT |
22124 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
22125 | NULL, xcalloc, xfree); | |
96408a79 | 22126 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 22127 | |
0a5429f6 DE |
22128 | /* While we're scanning CU's create a table that maps a psymtab pointer |
22129 | (which is what addrmap records) to its index (which is what is recorded | |
22130 | in the index file). This will later be needed to write the address | |
22131 | table. */ | |
22132 | cu_index_htab = htab_create_alloc (100, | |
22133 | hash_psymtab_cu_index, | |
22134 | eq_psymtab_cu_index, | |
22135 | NULL, xcalloc, xfree); | |
96408a79 | 22136 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
22137 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
22138 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
22139 | * dwarf2_per_objfile->n_comp_units); | |
22140 | make_cleanup (xfree, psymtab_cu_index_map); | |
22141 | ||
22142 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
22143 | work here. Also, the debug_types entries do not appear in |
22144 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
22145 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
22146 | { | |
3e43a32a MS |
22147 | struct dwarf2_per_cu_data *per_cu |
22148 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 22149 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 22150 | gdb_byte val[8]; |
0a5429f6 DE |
22151 | struct psymtab_cu_index_map *map; |
22152 | void **slot; | |
9291a0cd | 22153 | |
92fac807 JK |
22154 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
22155 | It may be referenced from a local scope but in such case it does not | |
22156 | need to be present in .gdb_index. */ | |
22157 | if (psymtab == NULL) | |
22158 | continue; | |
22159 | ||
95554aad TT |
22160 | if (psymtab->user == NULL) |
22161 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 22162 | |
0a5429f6 DE |
22163 | map = &psymtab_cu_index_map[i]; |
22164 | map->psymtab = psymtab; | |
22165 | map->cu_index = i; | |
22166 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
22167 | gdb_assert (slot != NULL); | |
22168 | gdb_assert (*slot == NULL); | |
22169 | *slot = map; | |
9291a0cd | 22170 | |
b64f50a1 JK |
22171 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22172 | per_cu->offset.sect_off); | |
9291a0cd | 22173 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 22174 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
22175 | obstack_grow (&cu_list, val, 8); |
22176 | } | |
22177 | ||
0a5429f6 DE |
22178 | /* Dump the address map. */ |
22179 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
22180 | ||
1fd400ff TT |
22181 | /* Write out the .debug_type entries, if any. */ |
22182 | if (dwarf2_per_objfile->signatured_types) | |
22183 | { | |
22184 | struct signatured_type_index_data sig_data; | |
22185 | ||
22186 | sig_data.objfile = objfile; | |
22187 | sig_data.symtab = symtab; | |
22188 | sig_data.types_list = &types_cu_list; | |
987d643c | 22189 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
22190 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
22191 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
22192 | write_one_signatured_type, &sig_data); | |
22193 | } | |
22194 | ||
156942c7 DE |
22195 | /* Now that we've processed all symbols we can shrink their cu_indices |
22196 | lists. */ | |
22197 | uniquify_cu_indices (symtab); | |
22198 | ||
9291a0cd TT |
22199 | obstack_init (&constant_pool); |
22200 | make_cleanup_obstack_free (&constant_pool); | |
22201 | obstack_init (&symtab_obstack); | |
22202 | make_cleanup_obstack_free (&symtab_obstack); | |
22203 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
22204 | ||
22205 | obstack_init (&contents); | |
22206 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 22207 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
22208 | total_len = size_of_contents; |
22209 | ||
22210 | /* The version number. */ | |
796a7ff8 | 22211 | val = MAYBE_SWAP (8); |
9291a0cd TT |
22212 | obstack_grow (&contents, &val, sizeof (val)); |
22213 | ||
22214 | /* The offset of the CU list from the start of the file. */ | |
22215 | val = MAYBE_SWAP (total_len); | |
22216 | obstack_grow (&contents, &val, sizeof (val)); | |
22217 | total_len += obstack_object_size (&cu_list); | |
22218 | ||
1fd400ff TT |
22219 | /* The offset of the types CU list from the start of the file. */ |
22220 | val = MAYBE_SWAP (total_len); | |
22221 | obstack_grow (&contents, &val, sizeof (val)); | |
22222 | total_len += obstack_object_size (&types_cu_list); | |
22223 | ||
9291a0cd TT |
22224 | /* The offset of the address table from the start of the file. */ |
22225 | val = MAYBE_SWAP (total_len); | |
22226 | obstack_grow (&contents, &val, sizeof (val)); | |
22227 | total_len += obstack_object_size (&addr_obstack); | |
22228 | ||
22229 | /* The offset of the symbol table from the start of the file. */ | |
22230 | val = MAYBE_SWAP (total_len); | |
22231 | obstack_grow (&contents, &val, sizeof (val)); | |
22232 | total_len += obstack_object_size (&symtab_obstack); | |
22233 | ||
22234 | /* The offset of the constant pool from the start of the file. */ | |
22235 | val = MAYBE_SWAP (total_len); | |
22236 | obstack_grow (&contents, &val, sizeof (val)); | |
22237 | total_len += obstack_object_size (&constant_pool); | |
22238 | ||
22239 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
22240 | ||
22241 | write_obstack (out_file, &contents); | |
22242 | write_obstack (out_file, &cu_list); | |
1fd400ff | 22243 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
22244 | write_obstack (out_file, &addr_obstack); |
22245 | write_obstack (out_file, &symtab_obstack); | |
22246 | write_obstack (out_file, &constant_pool); | |
22247 | ||
22248 | fclose (out_file); | |
22249 | ||
22250 | /* We want to keep the file, so we set cleanup_filename to NULL | |
22251 | here. See unlink_if_set. */ | |
22252 | cleanup_filename = NULL; | |
22253 | ||
22254 | do_cleanups (cleanup); | |
22255 | } | |
22256 | ||
90476074 TT |
22257 | /* Implementation of the `save gdb-index' command. |
22258 | ||
22259 | Note that the file format used by this command is documented in the | |
22260 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 22261 | |
9291a0cd TT |
22262 | static void |
22263 | save_gdb_index_command (char *arg, int from_tty) | |
22264 | { | |
22265 | struct objfile *objfile; | |
22266 | ||
22267 | if (!arg || !*arg) | |
96d19272 | 22268 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
22269 | |
22270 | ALL_OBJFILES (objfile) | |
22271 | { | |
22272 | struct stat st; | |
22273 | ||
22274 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 22275 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
22276 | continue; |
22277 | ||
22278 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22279 | if (dwarf2_per_objfile) | |
22280 | { | |
22281 | volatile struct gdb_exception except; | |
22282 | ||
22283 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
22284 | { | |
22285 | write_psymtabs_to_index (objfile, arg); | |
22286 | } | |
22287 | if (except.reason < 0) | |
22288 | exception_fprintf (gdb_stderr, except, | |
22289 | _("Error while writing index for `%s': "), | |
4262abfb | 22290 | objfile_name (objfile)); |
9291a0cd TT |
22291 | } |
22292 | } | |
dce234bc PP |
22293 | } |
22294 | ||
9291a0cd TT |
22295 | \f |
22296 | ||
9eae7c52 TT |
22297 | int dwarf2_always_disassemble; |
22298 | ||
22299 | static void | |
22300 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
22301 | struct cmd_list_element *c, const char *value) | |
22302 | { | |
3e43a32a MS |
22303 | fprintf_filtered (file, |
22304 | _("Whether to always disassemble " | |
22305 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
22306 | value); |
22307 | } | |
22308 | ||
900e11f9 JK |
22309 | static void |
22310 | show_check_physname (struct ui_file *file, int from_tty, | |
22311 | struct cmd_list_element *c, const char *value) | |
22312 | { | |
22313 | fprintf_filtered (file, | |
22314 | _("Whether to check \"physname\" is %s.\n"), | |
22315 | value); | |
22316 | } | |
22317 | ||
6502dd73 DJ |
22318 | void _initialize_dwarf2_read (void); |
22319 | ||
22320 | void | |
22321 | _initialize_dwarf2_read (void) | |
22322 | { | |
96d19272 JK |
22323 | struct cmd_list_element *c; |
22324 | ||
dce234bc | 22325 | dwarf2_objfile_data_key |
c1bd65d0 | 22326 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 22327 | |
1bedd215 AC |
22328 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
22329 | Set DWARF 2 specific variables.\n\ | |
22330 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22331 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
22332 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
22333 | ||
1bedd215 AC |
22334 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
22335 | Show DWARF 2 specific variables\n\ | |
22336 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22337 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
22338 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
22339 | ||
22340 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
22341 | &dwarf2_max_cache_age, _("\ |
22342 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22343 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22344 | A higher limit means that cached compilation units will be stored\n\ | |
22345 | in memory longer, and more total memory will be used. Zero disables\n\ | |
22346 | caching, which can slow down startup."), | |
2c5b56ce | 22347 | NULL, |
920d2a44 | 22348 | show_dwarf2_max_cache_age, |
2c5b56ce | 22349 | &set_dwarf2_cmdlist, |
ae038cb0 | 22350 | &show_dwarf2_cmdlist); |
d97bc12b | 22351 | |
9eae7c52 TT |
22352 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
22353 | &dwarf2_always_disassemble, _("\ | |
22354 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
22355 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
22356 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
22357 | syntax. When disabled, expressions will be printed in a more\n\ | |
22358 | conversational style, when possible."), | |
22359 | NULL, | |
22360 | show_dwarf2_always_disassemble, | |
22361 | &set_dwarf2_cmdlist, | |
22362 | &show_dwarf2_cmdlist); | |
22363 | ||
45cfd468 DE |
22364 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
22365 | Set debugging of the dwarf2 reader."), _("\ | |
22366 | Show debugging of the dwarf2 reader."), _("\ | |
22367 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
22368 | and symtab expansion."), | |
22369 | NULL, | |
22370 | NULL, | |
22371 | &setdebuglist, &showdebuglist); | |
22372 | ||
ccce17b0 | 22373 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
22374 | Set debugging of the dwarf2 DIE reader."), _("\ |
22375 | Show debugging of the dwarf2 DIE reader."), _("\ | |
22376 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
22377 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
22378 | NULL, |
22379 | NULL, | |
22380 | &setdebuglist, &showdebuglist); | |
9291a0cd | 22381 | |
900e11f9 JK |
22382 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
22383 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
22384 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
22385 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
22386 | the demangler."), | |
22387 | NULL, show_check_physname, | |
22388 | &setdebuglist, &showdebuglist); | |
22389 | ||
e615022a DE |
22390 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
22391 | no_class, &use_deprecated_index_sections, _("\ | |
22392 | Set whether to use deprecated gdb_index sections."), _("\ | |
22393 | Show whether to use deprecated gdb_index sections."), _("\ | |
22394 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
22395 | Normally they are ignored either because of a missing feature or\n\ | |
22396 | performance issue.\n\ | |
22397 | Warning: This option must be enabled before gdb reads the file."), | |
22398 | NULL, | |
22399 | NULL, | |
22400 | &setlist, &showlist); | |
22401 | ||
96d19272 | 22402 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 22403 | _("\ |
fc1a9d6e | 22404 | Save a gdb-index file.\n\ |
11570e71 | 22405 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
22406 | &save_cmdlist); |
22407 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
22408 | |
22409 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22410 | &dwarf2_locexpr_funcs); | |
22411 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22412 | &dwarf2_loclist_funcs); | |
22413 | ||
22414 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22415 | &dwarf2_block_frame_base_locexpr_funcs); | |
22416 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22417 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 22418 | } |