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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
9b254dd1 | 4 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
c906108c SS |
5 | |
6 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
7 | Inc. with support from Florida State University (under contract | |
8 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
9 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
10 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 11 | support. |
c906108c | 12 | |
c5aa993b | 13 | This file is part of GDB. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
17 | the Free Software Foundation; either version 3 of the License, or |
18 | (at your option) any later version. | |
c906108c | 19 | |
a9762ec7 JB |
20 | This program is distributed in the hope that it will be useful, |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
c906108c | 24 | |
c5aa993b | 25 | You should have received a copy of the GNU General Public License |
a9762ec7 | 26 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
27 | |
28 | #include "defs.h" | |
29 | #include "bfd.h" | |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
c906108c SS |
32 | #include "objfiles.h" |
33 | #include "elf/dwarf2.h" | |
34 | #include "buildsym.h" | |
35 | #include "demangle.h" | |
36 | #include "expression.h" | |
d5166ae1 | 37 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 38 | #include "macrotab.h" |
c906108c SS |
39 | #include "language.h" |
40 | #include "complaints.h" | |
357e46e7 | 41 | #include "bcache.h" |
4c2df51b DJ |
42 | #include "dwarf2expr.h" |
43 | #include "dwarf2loc.h" | |
9219021c | 44 | #include "cp-support.h" |
72bf9492 | 45 | #include "hashtab.h" |
ae038cb0 DJ |
46 | #include "command.h" |
47 | #include "gdbcmd.h" | |
ff013f42 | 48 | #include "addrmap.h" |
4c2df51b | 49 | |
c906108c SS |
50 | #include <fcntl.h> |
51 | #include "gdb_string.h" | |
4bdf3d34 | 52 | #include "gdb_assert.h" |
c906108c | 53 | #include <sys/types.h> |
233a11ab CS |
54 | #ifdef HAVE_ZLIB_H |
55 | #include <zlib.h> | |
56 | #endif | |
c906108c | 57 | |
d8151005 DJ |
58 | /* A note on memory usage for this file. |
59 | ||
60 | At the present time, this code reads the debug info sections into | |
61 | the objfile's objfile_obstack. A definite improvement for startup | |
62 | time, on platforms which do not emit relocations for debug | |
63 | sections, would be to use mmap instead. The object's complete | |
64 | debug information is loaded into memory, partly to simplify | |
65 | absolute DIE references. | |
66 | ||
67 | Whether using obstacks or mmap, the sections should remain loaded | |
68 | until the objfile is released, and pointers into the section data | |
69 | can be used for any other data associated to the objfile (symbol | |
70 | names, type names, location expressions to name a few). */ | |
71 | ||
107d2387 | 72 | #if 0 |
357e46e7 | 73 | /* .debug_info header for a compilation unit |
c906108c SS |
74 | Because of alignment constraints, this structure has padding and cannot |
75 | be mapped directly onto the beginning of the .debug_info section. */ | |
76 | typedef struct comp_unit_header | |
77 | { | |
78 | unsigned int length; /* length of the .debug_info | |
79 | contribution */ | |
80 | unsigned short version; /* version number -- 2 for DWARF | |
81 | version 2 */ | |
82 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
83 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
84 | } | |
85 | _COMP_UNIT_HEADER; | |
86 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 87 | #endif |
c906108c SS |
88 | |
89 | /* .debug_pubnames header | |
90 | Because of alignment constraints, this structure has padding and cannot | |
91 | be mapped directly onto the beginning of the .debug_info section. */ | |
92 | typedef struct pubnames_header | |
93 | { | |
94 | unsigned int length; /* length of the .debug_pubnames | |
95 | contribution */ | |
96 | unsigned char version; /* version number -- 2 for DWARF | |
97 | version 2 */ | |
98 | unsigned int info_offset; /* offset into .debug_info section */ | |
99 | unsigned int info_size; /* byte size of .debug_info section | |
100 | portion */ | |
101 | } | |
102 | _PUBNAMES_HEADER; | |
103 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
104 | ||
105 | /* .debug_pubnames header | |
106 | Because of alignment constraints, this structure has padding and cannot | |
107 | be mapped directly onto the beginning of the .debug_info section. */ | |
108 | typedef struct aranges_header | |
109 | { | |
110 | unsigned int length; /* byte len of the .debug_aranges | |
111 | contribution */ | |
112 | unsigned short version; /* version number -- 2 for DWARF | |
113 | version 2 */ | |
114 | unsigned int info_offset; /* offset into .debug_info section */ | |
115 | unsigned char addr_size; /* byte size of an address */ | |
116 | unsigned char seg_size; /* byte size of segment descriptor */ | |
117 | } | |
118 | _ARANGES_HEADER; | |
119 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
120 | ||
121 | /* .debug_line statement program prologue | |
122 | Because of alignment constraints, this structure has padding and cannot | |
123 | be mapped directly onto the beginning of the .debug_info section. */ | |
124 | typedef struct statement_prologue | |
125 | { | |
126 | unsigned int total_length; /* byte length of the statement | |
127 | information */ | |
128 | unsigned short version; /* version number -- 2 for DWARF | |
129 | version 2 */ | |
130 | unsigned int prologue_length; /* # bytes between prologue & | |
131 | stmt program */ | |
132 | unsigned char minimum_instruction_length; /* byte size of | |
133 | smallest instr */ | |
134 | unsigned char default_is_stmt; /* initial value of is_stmt | |
135 | register */ | |
136 | char line_base; | |
137 | unsigned char line_range; | |
138 | unsigned char opcode_base; /* number assigned to first special | |
139 | opcode */ | |
140 | unsigned char *standard_opcode_lengths; | |
141 | } | |
142 | _STATEMENT_PROLOGUE; | |
143 | ||
d97bc12b DE |
144 | /* When non-zero, dump DIEs after they are read in. */ |
145 | static int dwarf2_die_debug = 0; | |
146 | ||
df8a16a1 DJ |
147 | /* When set, the file that we're processing is known to have debugging |
148 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
149 | but later versions do. */ | |
150 | ||
151 | static int processing_has_namespace_info; | |
152 | ||
6502dd73 DJ |
153 | static const struct objfile_data *dwarf2_objfile_data_key; |
154 | ||
155 | struct dwarf2_per_objfile | |
156 | { | |
157 | /* Sizes of debugging sections. */ | |
158 | unsigned int info_size; | |
159 | unsigned int abbrev_size; | |
160 | unsigned int line_size; | |
161 | unsigned int pubnames_size; | |
162 | unsigned int aranges_size; | |
163 | unsigned int loc_size; | |
164 | unsigned int macinfo_size; | |
165 | unsigned int str_size; | |
166 | unsigned int ranges_size; | |
167 | unsigned int frame_size; | |
168 | unsigned int eh_frame_size; | |
169 | ||
170 | /* Loaded data from the sections. */ | |
fe1b8b76 JB |
171 | gdb_byte *info_buffer; |
172 | gdb_byte *abbrev_buffer; | |
173 | gdb_byte *line_buffer; | |
174 | gdb_byte *str_buffer; | |
175 | gdb_byte *macinfo_buffer; | |
176 | gdb_byte *ranges_buffer; | |
177 | gdb_byte *loc_buffer; | |
ae038cb0 | 178 | |
10b3939b DJ |
179 | /* A list of all the compilation units. This is used to locate |
180 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
181 | struct dwarf2_per_cu_data **all_comp_units; |
182 | ||
183 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
184 | int n_comp_units; | |
185 | ||
186 | /* A chain of compilation units that are currently read in, so that | |
187 | they can be freed later. */ | |
188 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 FR |
189 | |
190 | /* A flag indicating wether this objfile has a section loaded at a | |
191 | VMA of 0. */ | |
192 | int has_section_at_zero; | |
6502dd73 DJ |
193 | }; |
194 | ||
195 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 196 | |
086df311 DJ |
197 | static asection *dwarf_info_section; |
198 | static asection *dwarf_abbrev_section; | |
199 | static asection *dwarf_line_section; | |
200 | static asection *dwarf_pubnames_section; | |
201 | static asection *dwarf_aranges_section; | |
202 | static asection *dwarf_loc_section; | |
203 | static asection *dwarf_macinfo_section; | |
204 | static asection *dwarf_str_section; | |
205 | static asection *dwarf_ranges_section; | |
206 | asection *dwarf_frame_section; | |
207 | asection *dwarf_eh_frame_section; | |
208 | ||
c906108c SS |
209 | /* names of the debugging sections */ |
210 | ||
233a11ab CS |
211 | /* Note that if the debugging section has been compressed, it might |
212 | have a name like .zdebug_info. */ | |
213 | ||
214 | #define INFO_SECTION "debug_info" | |
215 | #define ABBREV_SECTION "debug_abbrev" | |
216 | #define LINE_SECTION "debug_line" | |
217 | #define PUBNAMES_SECTION "debug_pubnames" | |
218 | #define ARANGES_SECTION "debug_aranges" | |
219 | #define LOC_SECTION "debug_loc" | |
220 | #define MACINFO_SECTION "debug_macinfo" | |
221 | #define STR_SECTION "debug_str" | |
222 | #define RANGES_SECTION "debug_ranges" | |
223 | #define FRAME_SECTION "debug_frame" | |
224 | #define EH_FRAME_SECTION "eh_frame" | |
c906108c SS |
225 | |
226 | /* local data types */ | |
227 | ||
57349743 JB |
228 | /* We hold several abbreviation tables in memory at the same time. */ |
229 | #ifndef ABBREV_HASH_SIZE | |
230 | #define ABBREV_HASH_SIZE 121 | |
231 | #endif | |
232 | ||
107d2387 AC |
233 | /* The data in a compilation unit header, after target2host |
234 | translation, looks like this. */ | |
c906108c | 235 | struct comp_unit_head |
a738430d MK |
236 | { |
237 | unsigned long length; | |
238 | short version; | |
a738430d MK |
239 | unsigned char addr_size; |
240 | unsigned char signed_addr_p; | |
9cbfa09e | 241 | unsigned int abbrev_offset; |
57349743 | 242 | |
a738430d MK |
243 | /* Size of file offsets; either 4 or 8. */ |
244 | unsigned int offset_size; | |
57349743 | 245 | |
a738430d MK |
246 | /* Size of the length field; either 4 or 12. */ |
247 | unsigned int initial_length_size; | |
57349743 | 248 | |
a738430d MK |
249 | /* Offset to the first byte of this compilation unit header in the |
250 | .debug_info section, for resolving relative reference dies. */ | |
251 | unsigned int offset; | |
57349743 | 252 | |
d00adf39 DE |
253 | /* Offset to first die in this cu from the start of the cu. |
254 | This will be the first byte following the compilation unit header. */ | |
255 | unsigned int first_die_offset; | |
a738430d | 256 | }; |
c906108c | 257 | |
e7c27a73 DJ |
258 | /* Internal state when decoding a particular compilation unit. */ |
259 | struct dwarf2_cu | |
260 | { | |
261 | /* The objfile containing this compilation unit. */ | |
262 | struct objfile *objfile; | |
263 | ||
d00adf39 | 264 | /* The header of the compilation unit. */ |
e7c27a73 | 265 | struct comp_unit_head header; |
e142c38c | 266 | |
d00adf39 DE |
267 | /* Base address of this compilation unit. */ |
268 | CORE_ADDR base_address; | |
269 | ||
270 | /* Non-zero if base_address has been set. */ | |
271 | int base_known; | |
272 | ||
e142c38c DJ |
273 | struct function_range *first_fn, *last_fn, *cached_fn; |
274 | ||
275 | /* The language we are debugging. */ | |
276 | enum language language; | |
277 | const struct language_defn *language_defn; | |
278 | ||
b0f35d58 DL |
279 | const char *producer; |
280 | ||
e142c38c DJ |
281 | /* The generic symbol table building routines have separate lists for |
282 | file scope symbols and all all other scopes (local scopes). So | |
283 | we need to select the right one to pass to add_symbol_to_list(). | |
284 | We do it by keeping a pointer to the correct list in list_in_scope. | |
285 | ||
286 | FIXME: The original dwarf code just treated the file scope as the | |
287 | first local scope, and all other local scopes as nested local | |
288 | scopes, and worked fine. Check to see if we really need to | |
289 | distinguish these in buildsym.c. */ | |
290 | struct pending **list_in_scope; | |
291 | ||
f3dd6933 DJ |
292 | /* DWARF abbreviation table associated with this compilation unit. */ |
293 | struct abbrev_info **dwarf2_abbrevs; | |
294 | ||
295 | /* Storage for the abbrev table. */ | |
296 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
297 | |
298 | /* Hash table holding all the loaded partial DIEs. */ | |
299 | htab_t partial_dies; | |
300 | ||
ff013f42 JK |
301 | /* `.debug_ranges' offset for this `DW_TAG_compile_unit' DIE. */ |
302 | unsigned long ranges_offset; | |
303 | ||
72bf9492 DJ |
304 | /* Storage for things with the same lifetime as this read-in compilation |
305 | unit, including partial DIEs. */ | |
306 | struct obstack comp_unit_obstack; | |
307 | ||
ae038cb0 DJ |
308 | /* When multiple dwarf2_cu structures are living in memory, this field |
309 | chains them all together, so that they can be released efficiently. | |
310 | We will probably also want a generation counter so that most-recently-used | |
311 | compilation units are cached... */ | |
312 | struct dwarf2_per_cu_data *read_in_chain; | |
313 | ||
314 | /* Backchain to our per_cu entry if the tree has been built. */ | |
315 | struct dwarf2_per_cu_data *per_cu; | |
316 | ||
f792889a DJ |
317 | /* Pointer to the die -> type map. Although it is stored |
318 | permanently in per_cu, we copy it here to avoid double | |
319 | indirection. */ | |
320 | htab_t type_hash; | |
321 | ||
ae038cb0 DJ |
322 | /* How many compilation units ago was this CU last referenced? */ |
323 | int last_used; | |
324 | ||
10b3939b | 325 | /* A hash table of die offsets for following references. */ |
51545339 | 326 | htab_t die_hash; |
10b3939b DJ |
327 | |
328 | /* Full DIEs if read in. */ | |
329 | struct die_info *dies; | |
330 | ||
331 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
332 | units referenced by this one. Only set during full symbol processing; | |
333 | partial symbol tables do not have dependencies. */ | |
334 | htab_t dependencies; | |
335 | ||
cb1df416 DJ |
336 | /* Header data from the line table, during full symbol processing. */ |
337 | struct line_header *line_header; | |
338 | ||
ae038cb0 DJ |
339 | /* Mark used when releasing cached dies. */ |
340 | unsigned int mark : 1; | |
341 | ||
342 | /* This flag will be set if this compilation unit might include | |
343 | inter-compilation-unit references. */ | |
344 | unsigned int has_form_ref_addr : 1; | |
345 | ||
72bf9492 DJ |
346 | /* This flag will be set if this compilation unit includes any |
347 | DW_TAG_namespace DIEs. If we know that there are explicit | |
348 | DIEs for namespaces, we don't need to try to infer them | |
349 | from mangled names. */ | |
350 | unsigned int has_namespace_info : 1; | |
ff013f42 JK |
351 | |
352 | /* Field `ranges_offset' is filled in; flag as the value may be zero. */ | |
353 | unsigned int has_ranges_offset : 1; | |
e7c27a73 DJ |
354 | }; |
355 | ||
10b3939b DJ |
356 | /* Persistent data held for a compilation unit, even when not |
357 | processing it. We put a pointer to this structure in the | |
358 | read_symtab_private field of the psymtab. If we encounter | |
359 | inter-compilation-unit references, we also maintain a sorted | |
360 | list of all compilation units. */ | |
361 | ||
ae038cb0 DJ |
362 | struct dwarf2_per_cu_data |
363 | { | |
5afb4e99 | 364 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 | 365 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
366 | - if it doesn't, GDB will fall over anyway. |
367 | NOTE: Unlike comp_unit_head.length, this length includes | |
368 | initial_length_size. */ | |
ae038cb0 | 369 | unsigned long offset; |
5afb4e99 | 370 | unsigned long length : 30; |
ae038cb0 DJ |
371 | |
372 | /* Flag indicating this compilation unit will be read in before | |
373 | any of the current compilation units are processed. */ | |
374 | unsigned long queued : 1; | |
375 | ||
5afb4e99 DJ |
376 | /* This flag will be set if we need to load absolutely all DIEs |
377 | for this compilation unit, instead of just the ones we think | |
378 | are interesting. It gets set if we look for a DIE in the | |
379 | hash table and don't find it. */ | |
380 | unsigned int load_all_dies : 1; | |
381 | ||
ae038cb0 DJ |
382 | /* Set iff currently read in. */ |
383 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
384 | |
385 | /* If full symbols for this CU have been read in, then this field | |
386 | holds a map of DIE offsets to types. It isn't always possible | |
387 | to reconstruct this information later, so we have to preserve | |
388 | it. */ | |
1c379e20 | 389 | htab_t type_hash; |
10b3939b | 390 | |
31ffec48 DJ |
391 | /* The partial symbol table associated with this compilation unit, |
392 | or NULL for partial units (which do not have an associated | |
393 | symtab). */ | |
10b3939b | 394 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
395 | }; |
396 | ||
debd256d JB |
397 | /* The line number information for a compilation unit (found in the |
398 | .debug_line section) begins with a "statement program header", | |
399 | which contains the following information. */ | |
400 | struct line_header | |
401 | { | |
402 | unsigned int total_length; | |
403 | unsigned short version; | |
404 | unsigned int header_length; | |
405 | unsigned char minimum_instruction_length; | |
406 | unsigned char default_is_stmt; | |
407 | int line_base; | |
408 | unsigned char line_range; | |
409 | unsigned char opcode_base; | |
410 | ||
411 | /* standard_opcode_lengths[i] is the number of operands for the | |
412 | standard opcode whose value is i. This means that | |
413 | standard_opcode_lengths[0] is unused, and the last meaningful | |
414 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
415 | unsigned char *standard_opcode_lengths; | |
416 | ||
417 | /* The include_directories table. NOTE! These strings are not | |
418 | allocated with xmalloc; instead, they are pointers into | |
419 | debug_line_buffer. If you try to free them, `free' will get | |
420 | indigestion. */ | |
421 | unsigned int num_include_dirs, include_dirs_size; | |
422 | char **include_dirs; | |
423 | ||
424 | /* The file_names table. NOTE! These strings are not allocated | |
425 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
426 | Don't try to free them directly. */ | |
427 | unsigned int num_file_names, file_names_size; | |
428 | struct file_entry | |
c906108c | 429 | { |
debd256d JB |
430 | char *name; |
431 | unsigned int dir_index; | |
432 | unsigned int mod_time; | |
433 | unsigned int length; | |
aaa75496 | 434 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 435 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
436 | } *file_names; |
437 | ||
438 | /* The start and end of the statement program following this | |
6502dd73 | 439 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 440 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 441 | }; |
c906108c SS |
442 | |
443 | /* When we construct a partial symbol table entry we only | |
444 | need this much information. */ | |
445 | struct partial_die_info | |
446 | { | |
72bf9492 | 447 | /* Offset of this DIE. */ |
c906108c | 448 | unsigned int offset; |
72bf9492 DJ |
449 | |
450 | /* DWARF-2 tag for this DIE. */ | |
451 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
452 | ||
453 | /* Language code associated with this DIE. This is only used | |
454 | for the compilation unit DIE. */ | |
455 | unsigned int language : 8; | |
456 | ||
457 | /* Assorted flags describing the data found in this DIE. */ | |
458 | unsigned int has_children : 1; | |
459 | unsigned int is_external : 1; | |
460 | unsigned int is_declaration : 1; | |
461 | unsigned int has_type : 1; | |
462 | unsigned int has_specification : 1; | |
aaa75496 | 463 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
464 | unsigned int has_pc_info : 1; |
465 | ||
466 | /* Flag set if the SCOPE field of this structure has been | |
467 | computed. */ | |
468 | unsigned int scope_set : 1; | |
469 | ||
fa4028e9 JB |
470 | /* Flag set if the DIE has a byte_size attribute. */ |
471 | unsigned int has_byte_size : 1; | |
472 | ||
72bf9492 DJ |
473 | /* The name of this DIE. Normally the value of DW_AT_name, but |
474 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
475 | other fashion. */ | |
c906108c | 476 | char *name; |
57c22c6c | 477 | char *dirname; |
72bf9492 DJ |
478 | |
479 | /* The scope to prepend to our children. This is generally | |
480 | allocated on the comp_unit_obstack, so will disappear | |
481 | when this compilation unit leaves the cache. */ | |
482 | char *scope; | |
483 | ||
484 | /* The location description associated with this DIE, if any. */ | |
485 | struct dwarf_block *locdesc; | |
486 | ||
487 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
488 | CORE_ADDR lowpc; |
489 | CORE_ADDR highpc; | |
72bf9492 DJ |
490 | |
491 | /* Pointer into the info_buffer pointing at the target of | |
492 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 493 | gdb_byte *sibling; |
72bf9492 DJ |
494 | |
495 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
496 | DW_AT_specification (or DW_AT_abstract_origin or | |
497 | DW_AT_extension). */ | |
498 | unsigned int spec_offset; | |
499 | ||
aaa75496 JB |
500 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
501 | unsigned int line_offset; | |
502 | ||
72bf9492 DJ |
503 | /* Pointers to this DIE's parent, first child, and next sibling, |
504 | if any. */ | |
505 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
506 | }; |
507 | ||
508 | /* This data structure holds the information of an abbrev. */ | |
509 | struct abbrev_info | |
510 | { | |
511 | unsigned int number; /* number identifying abbrev */ | |
512 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
513 | unsigned short has_children; /* boolean */ |
514 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
515 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
516 | struct abbrev_info *next; /* next in chain */ | |
517 | }; | |
518 | ||
519 | struct attr_abbrev | |
520 | { | |
9d25dd43 DE |
521 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
522 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
523 | }; |
524 | ||
b60c80d6 DJ |
525 | /* Attributes have a name and a value */ |
526 | struct attribute | |
527 | { | |
9d25dd43 DE |
528 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
529 | ENUM_BITFIELD(dwarf_form) form : 16; | |
b60c80d6 DJ |
530 | union |
531 | { | |
532 | char *str; | |
533 | struct dwarf_block *blk; | |
534 | unsigned long unsnd; | |
535 | long int snd; | |
536 | CORE_ADDR addr; | |
537 | } | |
538 | u; | |
539 | }; | |
540 | ||
c906108c SS |
541 | /* This data structure holds a complete die structure. */ |
542 | struct die_info | |
543 | { | |
76815b17 DE |
544 | /* DWARF-2 tag for this DIE. */ |
545 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
546 | ||
547 | /* Number of attributes */ | |
548 | unsigned short num_attrs; | |
549 | ||
550 | /* Abbrev number */ | |
551 | unsigned int abbrev; | |
552 | ||
553 | /* Offset in .debug_info section */ | |
554 | unsigned int offset; | |
78ba4af6 JB |
555 | |
556 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
557 | points to this die's parent; CHILD points to the first child of | |
558 | this node; and all the children of a given node are chained | |
559 | together via their SIBLING fields, terminated by a die whose | |
560 | tag is zero. */ | |
639d11d3 DC |
561 | struct die_info *child; /* Its first child, if any. */ |
562 | struct die_info *sibling; /* Its next sibling, if any. */ | |
563 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 564 | |
b60c80d6 DJ |
565 | /* An array of attributes, with NUM_ATTRS elements. There may be |
566 | zero, but it's not common and zero-sized arrays are not | |
567 | sufficiently portable C. */ | |
568 | struct attribute attrs[1]; | |
c906108c SS |
569 | }; |
570 | ||
5fb290d7 DJ |
571 | struct function_range |
572 | { | |
573 | const char *name; | |
574 | CORE_ADDR lowpc, highpc; | |
575 | int seen_line; | |
576 | struct function_range *next; | |
577 | }; | |
578 | ||
c906108c SS |
579 | /* Get at parts of an attribute structure */ |
580 | ||
581 | #define DW_STRING(attr) ((attr)->u.str) | |
582 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
583 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
584 | #define DW_SND(attr) ((attr)->u.snd) | |
585 | #define DW_ADDR(attr) ((attr)->u.addr) | |
586 | ||
587 | /* Blocks are a bunch of untyped bytes. */ | |
588 | struct dwarf_block | |
589 | { | |
590 | unsigned int size; | |
fe1b8b76 | 591 | gdb_byte *data; |
c906108c SS |
592 | }; |
593 | ||
c906108c SS |
594 | #ifndef ATTR_ALLOC_CHUNK |
595 | #define ATTR_ALLOC_CHUNK 4 | |
596 | #endif | |
597 | ||
c906108c SS |
598 | /* Allocate fields for structs, unions and enums in this size. */ |
599 | #ifndef DW_FIELD_ALLOC_CHUNK | |
600 | #define DW_FIELD_ALLOC_CHUNK 4 | |
601 | #endif | |
602 | ||
c906108c SS |
603 | /* A zeroed version of a partial die for initialization purposes. */ |
604 | static struct partial_die_info zeroed_partial_die; | |
605 | ||
c906108c SS |
606 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
607 | but this would require a corresponding change in unpack_field_as_long | |
608 | and friends. */ | |
609 | static int bits_per_byte = 8; | |
610 | ||
611 | /* The routines that read and process dies for a C struct or C++ class | |
612 | pass lists of data member fields and lists of member function fields | |
613 | in an instance of a field_info structure, as defined below. */ | |
614 | struct field_info | |
c5aa993b JM |
615 | { |
616 | /* List of data member and baseclasses fields. */ | |
617 | struct nextfield | |
618 | { | |
619 | struct nextfield *next; | |
620 | int accessibility; | |
621 | int virtuality; | |
622 | struct field field; | |
623 | } | |
624 | *fields; | |
c906108c | 625 | |
c5aa993b JM |
626 | /* Number of fields. */ |
627 | int nfields; | |
c906108c | 628 | |
c5aa993b JM |
629 | /* Number of baseclasses. */ |
630 | int nbaseclasses; | |
c906108c | 631 | |
c5aa993b JM |
632 | /* Set if the accesibility of one of the fields is not public. */ |
633 | int non_public_fields; | |
c906108c | 634 | |
c5aa993b JM |
635 | /* Member function fields array, entries are allocated in the order they |
636 | are encountered in the object file. */ | |
637 | struct nextfnfield | |
638 | { | |
639 | struct nextfnfield *next; | |
640 | struct fn_field fnfield; | |
641 | } | |
642 | *fnfields; | |
c906108c | 643 | |
c5aa993b JM |
644 | /* Member function fieldlist array, contains name of possibly overloaded |
645 | member function, number of overloaded member functions and a pointer | |
646 | to the head of the member function field chain. */ | |
647 | struct fnfieldlist | |
648 | { | |
649 | char *name; | |
650 | int length; | |
651 | struct nextfnfield *head; | |
652 | } | |
653 | *fnfieldlists; | |
c906108c | 654 | |
c5aa993b JM |
655 | /* Number of entries in the fnfieldlists array. */ |
656 | int nfnfields; | |
657 | }; | |
c906108c | 658 | |
10b3939b DJ |
659 | /* One item on the queue of compilation units to read in full symbols |
660 | for. */ | |
661 | struct dwarf2_queue_item | |
662 | { | |
663 | struct dwarf2_per_cu_data *per_cu; | |
664 | struct dwarf2_queue_item *next; | |
665 | }; | |
666 | ||
667 | /* The current queue. */ | |
668 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
669 | ||
ae038cb0 DJ |
670 | /* Loaded secondary compilation units are kept in memory until they |
671 | have not been referenced for the processing of this many | |
672 | compilation units. Set this to zero to disable caching. Cache | |
673 | sizes of up to at least twenty will improve startup time for | |
674 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
675 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
676 | static void |
677 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
678 | struct cmd_list_element *c, const char *value) | |
679 | { | |
680 | fprintf_filtered (file, _("\ | |
681 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
682 | value); | |
683 | } | |
684 | ||
ae038cb0 | 685 | |
c906108c SS |
686 | /* Various complaints about symbol reading that don't abort the process */ |
687 | ||
4d3c2250 KB |
688 | static void |
689 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 690 | { |
4d3c2250 | 691 | complaint (&symfile_complaints, |
e2e0b3e5 | 692 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
693 | } |
694 | ||
25e43795 DJ |
695 | static void |
696 | dwarf2_debug_line_missing_file_complaint (void) | |
697 | { | |
698 | complaint (&symfile_complaints, | |
699 | _(".debug_line section has line data without a file")); | |
700 | } | |
701 | ||
4d3c2250 KB |
702 | static void |
703 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 704 | { |
e2e0b3e5 | 705 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
706 | } |
707 | ||
4d3c2250 KB |
708 | static void |
709 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
710 | int arg3) | |
2e276125 | 711 | { |
4d3c2250 | 712 | complaint (&symfile_complaints, |
e2e0b3e5 | 713 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
714 | arg2, arg3); |
715 | } | |
716 | ||
717 | static void | |
718 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 719 | { |
4d3c2250 | 720 | complaint (&symfile_complaints, |
e2e0b3e5 | 721 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
722 | } |
723 | ||
724 | static void | |
725 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 726 | { |
4d3c2250 | 727 | complaint (&symfile_complaints, |
e2e0b3e5 | 728 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
729 | arg1); |
730 | } | |
731 | ||
732 | static void | |
733 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 734 | { |
4d3c2250 | 735 | complaint (&symfile_complaints, |
e2e0b3e5 | 736 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 737 | } |
c906108c | 738 | |
c906108c SS |
739 | /* local function prototypes */ |
740 | ||
4efb68b1 | 741 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
742 | |
743 | #if 0 | |
a14ed312 | 744 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
745 | #endif |
746 | ||
aaa75496 JB |
747 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
748 | struct objfile *); | |
749 | ||
750 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
751 | struct partial_die_info *, | |
752 | struct partial_symtab *); | |
753 | ||
a14ed312 | 754 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 755 | |
72bf9492 DJ |
756 | static void scan_partial_symbols (struct partial_die_info *, |
757 | CORE_ADDR *, CORE_ADDR *, | |
758 | struct dwarf2_cu *); | |
c906108c | 759 | |
72bf9492 DJ |
760 | static void add_partial_symbol (struct partial_die_info *, |
761 | struct dwarf2_cu *); | |
63d06c5c | 762 | |
72bf9492 | 763 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 764 | |
72bf9492 DJ |
765 | static void add_partial_namespace (struct partial_die_info *pdi, |
766 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
767 | struct dwarf2_cu *cu); | |
63d06c5c | 768 | |
72bf9492 DJ |
769 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
770 | struct dwarf2_cu *cu); | |
91c24f0a | 771 | |
bc30ff58 JB |
772 | static void add_partial_subprogram (struct partial_die_info *pdi, |
773 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
774 | struct dwarf2_cu *cu); | |
775 | ||
fe1b8b76 JB |
776 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
777 | gdb_byte *info_ptr, | |
778 | bfd *abfd, | |
779 | struct dwarf2_cu *cu); | |
91c24f0a | 780 | |
a14ed312 | 781 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 782 | |
a14ed312 | 783 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 784 | |
fe1b8b76 | 785 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 786 | |
e7c27a73 | 787 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 788 | |
f3dd6933 | 789 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 790 | |
fe1b8b76 | 791 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 792 | struct dwarf2_cu *); |
72bf9492 | 793 | |
57349743 | 794 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 795 | struct dwarf2_cu *); |
c906108c | 796 | |
fe1b8b76 | 797 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
798 | struct dwarf2_cu *); |
799 | ||
fe1b8b76 JB |
800 | static gdb_byte *read_partial_die (struct partial_die_info *, |
801 | struct abbrev_info *abbrev, unsigned int, | |
802 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 803 | |
72bf9492 | 804 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 805 | struct dwarf2_cu *); |
72bf9492 DJ |
806 | |
807 | static void fixup_partial_die (struct partial_die_info *, | |
808 | struct dwarf2_cu *); | |
809 | ||
fe1b8b76 JB |
810 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
811 | struct dwarf2_cu *, int *); | |
c906108c | 812 | |
fe1b8b76 JB |
813 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
814 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 815 | |
fe1b8b76 JB |
816 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
817 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 818 | |
fe1b8b76 | 819 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 820 | |
fe1b8b76 | 821 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 822 | |
fe1b8b76 | 823 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 824 | |
fe1b8b76 | 825 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 826 | |
fe1b8b76 | 827 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 828 | |
fe1b8b76 | 829 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 830 | unsigned int *); |
c906108c | 831 | |
fe1b8b76 | 832 | static LONGEST read_initial_length (bfd *, gdb_byte *, |
891d2f0b | 833 | struct comp_unit_head *, unsigned int *); |
613e1657 | 834 | |
fe1b8b76 | 835 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
891d2f0b | 836 | unsigned int *); |
613e1657 | 837 | |
fe1b8b76 | 838 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 839 | |
fe1b8b76 | 840 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 841 | |
fe1b8b76 JB |
842 | static char *read_indirect_string (bfd *, gdb_byte *, |
843 | const struct comp_unit_head *, | |
844 | unsigned int *); | |
4bdf3d34 | 845 | |
fe1b8b76 | 846 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 847 | |
fe1b8b76 | 848 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 849 | |
fe1b8b76 | 850 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 851 | |
e142c38c | 852 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 853 | |
e142c38c DJ |
854 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
855 | struct dwarf2_cu *); | |
c906108c | 856 | |
05cf31d1 JB |
857 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
858 | struct dwarf2_cu *cu); | |
859 | ||
e142c38c | 860 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 861 | |
e142c38c | 862 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 863 | struct dwarf2_cu **); |
63d06c5c | 864 | |
debd256d JB |
865 | static void free_line_header (struct line_header *lh); |
866 | ||
aaa75496 JB |
867 | static void add_file_name (struct line_header *, char *, unsigned int, |
868 | unsigned int, unsigned int); | |
869 | ||
debd256d JB |
870 | static struct line_header *(dwarf_decode_line_header |
871 | (unsigned int offset, | |
e7c27a73 | 872 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
873 | |
874 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 875 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 876 | |
4f1520fb | 877 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 878 | |
a14ed312 | 879 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 880 | struct dwarf2_cu *); |
c906108c | 881 | |
a14ed312 | 882 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 883 | struct dwarf2_cu *); |
c906108c | 884 | |
2df3850c JM |
885 | static void dwarf2_const_value_data (struct attribute *attr, |
886 | struct symbol *sym, | |
887 | int bits); | |
888 | ||
e7c27a73 | 889 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 890 | |
e7c27a73 DJ |
891 | static struct type *die_containing_type (struct die_info *, |
892 | struct dwarf2_cu *); | |
c906108c | 893 | |
e7c27a73 | 894 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 895 | |
f792889a | 896 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 897 | |
086ed43d | 898 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 899 | |
fe1b8b76 JB |
900 | static char *typename_concat (struct obstack *, |
901 | const char *prefix, | |
902 | const char *suffix, | |
987504bb | 903 | struct dwarf2_cu *); |
63d06c5c | 904 | |
e7c27a73 | 905 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 906 | |
e7c27a73 | 907 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 908 | |
e7c27a73 | 909 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 910 | |
ff013f42 JK |
911 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
912 | struct dwarf2_cu *, struct partial_symtab *); | |
913 | ||
a14ed312 | 914 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 915 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 916 | |
fae299cd DC |
917 | static void get_scope_pc_bounds (struct die_info *, |
918 | CORE_ADDR *, CORE_ADDR *, | |
919 | struct dwarf2_cu *); | |
920 | ||
801e3a5b JB |
921 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
922 | CORE_ADDR, struct dwarf2_cu *); | |
923 | ||
a14ed312 | 924 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 925 | struct dwarf2_cu *); |
c906108c | 926 | |
a14ed312 | 927 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 928 | struct type *, struct dwarf2_cu *); |
c906108c | 929 | |
a14ed312 | 930 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 931 | struct die_info *, struct type *, |
e7c27a73 | 932 | struct dwarf2_cu *); |
c906108c | 933 | |
a14ed312 | 934 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 935 | struct type *, struct dwarf2_cu *); |
c906108c | 936 | |
134d01f1 | 937 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 938 | |
0114d602 DJ |
939 | static const char *determine_class_name (struct die_info *die, |
940 | struct dwarf2_cu *cu); | |
8176b9b8 | 941 | |
e7c27a73 | 942 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 943 | |
e7c27a73 | 944 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 945 | |
38d518c9 | 946 | static const char *namespace_name (struct die_info *die, |
e142c38c | 947 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 948 | |
134d01f1 | 949 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 950 | |
e7c27a73 | 951 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 952 | |
7ca2d3a3 DL |
953 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
954 | struct dwarf2_cu *); | |
955 | ||
fe1b8b76 | 956 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 957 | |
d97bc12b DE |
958 | static struct die_info *read_die_and_children_1 (gdb_byte *info_ptr, bfd *abfd, |
959 | struct dwarf2_cu *, | |
960 | gdb_byte **new_info_ptr, | |
961 | struct die_info *parent); | |
962 | ||
fe1b8b76 | 963 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 964 | struct dwarf2_cu *, |
fe1b8b76 | 965 | gdb_byte **new_info_ptr, |
639d11d3 DC |
966 | struct die_info *parent); |
967 | ||
fe1b8b76 | 968 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 969 | struct dwarf2_cu *, |
fe1b8b76 | 970 | gdb_byte **new_info_ptr, |
639d11d3 DC |
971 | struct die_info *parent); |
972 | ||
e7c27a73 | 973 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 974 | |
e142c38c | 975 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 976 | |
e142c38c | 977 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 978 | |
e142c38c | 979 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 980 | struct dwarf2_cu **); |
9219021c | 981 | |
a14ed312 | 982 | static char *dwarf_tag_name (unsigned int); |
c906108c | 983 | |
a14ed312 | 984 | static char *dwarf_attr_name (unsigned int); |
c906108c | 985 | |
a14ed312 | 986 | static char *dwarf_form_name (unsigned int); |
c906108c | 987 | |
a14ed312 | 988 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 989 | |
a14ed312 | 990 | static char *dwarf_bool_name (unsigned int); |
c906108c | 991 | |
a14ed312 | 992 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
993 | |
994 | #if 0 | |
a14ed312 | 995 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
996 | #endif |
997 | ||
f9aca02d | 998 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 999 | |
d97bc12b DE |
1000 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1001 | ||
1002 | static void dump_die_for_error (struct die_info *); | |
1003 | ||
1004 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1005 | struct die_info *); | |
c906108c | 1006 | |
d97bc12b | 1007 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1008 | |
51545339 | 1009 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1010 | struct dwarf2_cu *); |
c906108c | 1011 | |
e142c38c DJ |
1012 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
1013 | struct dwarf2_cu *); | |
c906108c | 1014 | |
a02abb62 JB |
1015 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1016 | ||
10b3939b DJ |
1017 | static struct die_info *follow_die_ref (struct die_info *, |
1018 | struct attribute *, | |
f2f0e013 | 1019 | struct dwarf2_cu **); |
c906108c | 1020 | |
c906108c SS |
1021 | /* memory allocation interface */ |
1022 | ||
7b5a2f43 | 1023 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1024 | |
f3dd6933 | 1025 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1026 | |
b60c80d6 | 1027 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1028 | |
e142c38c | 1029 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1030 | |
e142c38c DJ |
1031 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1032 | struct dwarf2_cu *); | |
5fb290d7 | 1033 | |
2e276125 | 1034 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1035 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1036 | |
8e19ed76 PS |
1037 | static int attr_form_is_block (struct attribute *); |
1038 | ||
3690dd37 JB |
1039 | static int attr_form_is_section_offset (struct attribute *); |
1040 | ||
1041 | static int attr_form_is_constant (struct attribute *); | |
1042 | ||
93e7bd98 DJ |
1043 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1044 | struct symbol *sym, | |
1045 | struct dwarf2_cu *cu); | |
4c2df51b | 1046 | |
fe1b8b76 JB |
1047 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1048 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1049 | |
72bf9492 DJ |
1050 | static void free_stack_comp_unit (void *); |
1051 | ||
72bf9492 DJ |
1052 | static hashval_t partial_die_hash (const void *item); |
1053 | ||
1054 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1055 | ||
ae038cb0 DJ |
1056 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1057 | (unsigned long offset, struct objfile *objfile); | |
1058 | ||
1059 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1060 | (unsigned long offset, struct objfile *objfile); | |
1061 | ||
1062 | static void free_one_comp_unit (void *); | |
1063 | ||
1064 | static void free_cached_comp_units (void *); | |
1065 | ||
1066 | static void age_cached_comp_units (void); | |
1067 | ||
1068 | static void free_one_cached_comp_unit (void *); | |
1069 | ||
f792889a DJ |
1070 | static struct type *set_die_type (struct die_info *, struct type *, |
1071 | struct dwarf2_cu *); | |
1c379e20 | 1072 | |
ae038cb0 DJ |
1073 | static void create_all_comp_units (struct objfile *); |
1074 | ||
31ffec48 DJ |
1075 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1076 | struct objfile *); | |
10b3939b DJ |
1077 | |
1078 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1079 | ||
1080 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1081 | struct dwarf2_per_cu_data *); | |
1082 | ||
ae038cb0 DJ |
1083 | static void dwarf2_mark (struct dwarf2_cu *); |
1084 | ||
1085 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1086 | ||
f792889a | 1087 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1088 | |
c906108c SS |
1089 | /* Try to locate the sections we need for DWARF 2 debugging |
1090 | information and return true if we have enough to do something. */ | |
1091 | ||
1092 | int | |
6502dd73 | 1093 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1094 | { |
6502dd73 DJ |
1095 | struct dwarf2_per_objfile *data; |
1096 | ||
1097 | /* Initialize per-objfile state. */ | |
1098 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1099 | memset (data, 0, sizeof (*data)); | |
1100 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1101 | dwarf2_per_objfile = data; | |
1102 | ||
188dd5d6 DJ |
1103 | dwarf_info_section = 0; |
1104 | dwarf_abbrev_section = 0; | |
1105 | dwarf_line_section = 0; | |
1106 | dwarf_str_section = 0; | |
1107 | dwarf_macinfo_section = 0; | |
1108 | dwarf_frame_section = 0; | |
1109 | dwarf_eh_frame_section = 0; | |
1110 | dwarf_ranges_section = 0; | |
1111 | dwarf_loc_section = 0; | |
af34e669 | 1112 | |
6502dd73 | 1113 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1114 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1115 | } |
1116 | ||
233a11ab CS |
1117 | /* When loading sections, we can either look for ".<name>", or for |
1118 | * ".z<name>", which indicates a compressed section. */ | |
1119 | ||
1120 | static int | |
1121 | section_is_p (asection *sectp, const char *name) | |
1122 | { | |
1123 | return ((sectp->name[0] == '.' | |
1124 | && strcmp (sectp->name + 1, name) == 0) | |
1125 | || (sectp->name[0] == '.' && sectp->name[1] == 'z' | |
1126 | && strcmp (sectp->name + 2, name) == 0)); | |
1127 | } | |
1128 | ||
c906108c SS |
1129 | /* This function is mapped across the sections and remembers the |
1130 | offset and size of each of the debugging sections we are interested | |
1131 | in. */ | |
1132 | ||
1133 | static void | |
72dca2f5 | 1134 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1135 | { |
233a11ab | 1136 | if (section_is_p (sectp, INFO_SECTION)) |
c906108c | 1137 | { |
2c500098 | 1138 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1139 | dwarf_info_section = sectp; |
c906108c | 1140 | } |
233a11ab | 1141 | else if (section_is_p (sectp, ABBREV_SECTION)) |
c906108c | 1142 | { |
2c500098 | 1143 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1144 | dwarf_abbrev_section = sectp; |
c906108c | 1145 | } |
233a11ab | 1146 | else if (section_is_p (sectp, LINE_SECTION)) |
c906108c | 1147 | { |
2c500098 | 1148 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1149 | dwarf_line_section = sectp; |
c906108c | 1150 | } |
233a11ab | 1151 | else if (section_is_p (sectp, PUBNAMES_SECTION)) |
c906108c | 1152 | { |
2c500098 | 1153 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1154 | dwarf_pubnames_section = sectp; |
c906108c | 1155 | } |
233a11ab | 1156 | else if (section_is_p (sectp, ARANGES_SECTION)) |
c906108c | 1157 | { |
2c500098 | 1158 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1159 | dwarf_aranges_section = sectp; |
c906108c | 1160 | } |
233a11ab | 1161 | else if (section_is_p (sectp, LOC_SECTION)) |
c906108c | 1162 | { |
2c500098 | 1163 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1164 | dwarf_loc_section = sectp; |
c906108c | 1165 | } |
233a11ab | 1166 | else if (section_is_p (sectp, MACINFO_SECTION)) |
c906108c | 1167 | { |
2c500098 | 1168 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1169 | dwarf_macinfo_section = sectp; |
c906108c | 1170 | } |
233a11ab | 1171 | else if (section_is_p (sectp, STR_SECTION)) |
c906108c | 1172 | { |
2c500098 | 1173 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1174 | dwarf_str_section = sectp; |
c906108c | 1175 | } |
233a11ab | 1176 | else if (section_is_p (sectp, FRAME_SECTION)) |
b6af0555 | 1177 | { |
2c500098 | 1178 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1179 | dwarf_frame_section = sectp; |
b6af0555 | 1180 | } |
233a11ab | 1181 | else if (section_is_p (sectp, EH_FRAME_SECTION)) |
b6af0555 | 1182 | { |
3799ccc6 EZ |
1183 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1184 | if (aflag & SEC_HAS_CONTENTS) | |
1185 | { | |
2c500098 | 1186 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1187 | dwarf_eh_frame_section = sectp; |
1188 | } | |
b6af0555 | 1189 | } |
233a11ab | 1190 | else if (section_is_p (sectp, RANGES_SECTION)) |
af34e669 | 1191 | { |
2c500098 | 1192 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1193 | dwarf_ranges_section = sectp; |
af34e669 | 1194 | } |
72dca2f5 FR |
1195 | |
1196 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1197 | && bfd_section_vma (abfd, sectp) == 0) | |
1198 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1199 | } |
1200 | ||
233a11ab CS |
1201 | /* This function is called after decompressing a section, so |
1202 | dwarf2_per_objfile can record its new, uncompressed size. */ | |
1203 | ||
1204 | static void | |
1205 | dwarf2_resize_section (asection *sectp, bfd_size_type new_size) | |
1206 | { | |
1207 | if (section_is_p (sectp, INFO_SECTION)) | |
1208 | dwarf2_per_objfile->info_size = new_size; | |
1209 | else if (section_is_p (sectp, ABBREV_SECTION)) | |
1210 | dwarf2_per_objfile->abbrev_size = new_size; | |
1211 | else if (section_is_p (sectp, LINE_SECTION)) | |
1212 | dwarf2_per_objfile->line_size = new_size; | |
1213 | else if (section_is_p (sectp, PUBNAMES_SECTION)) | |
1214 | dwarf2_per_objfile->pubnames_size = new_size; | |
1215 | else if (section_is_p (sectp, ARANGES_SECTION)) | |
1216 | dwarf2_per_objfile->aranges_size = new_size; | |
1217 | else if (section_is_p (sectp, LOC_SECTION)) | |
1218 | dwarf2_per_objfile->loc_size = new_size; | |
1219 | else if (section_is_p (sectp, MACINFO_SECTION)) | |
1220 | dwarf2_per_objfile->macinfo_size = new_size; | |
1221 | else if (section_is_p (sectp, STR_SECTION)) | |
1222 | dwarf2_per_objfile->str_size = new_size; | |
1223 | else if (section_is_p (sectp, FRAME_SECTION)) | |
1224 | dwarf2_per_objfile->frame_size = new_size; | |
1225 | else if (section_is_p (sectp, EH_FRAME_SECTION)) | |
1226 | dwarf2_per_objfile->eh_frame_size = new_size; | |
1227 | else if (section_is_p (sectp, RANGES_SECTION)) | |
1228 | dwarf2_per_objfile->ranges_size = new_size; | |
1229 | else | |
1230 | internal_error (__FILE__, __LINE__, | |
1231 | _("dwarf2_resize_section: missing section_is_p check: %s"), | |
1232 | sectp->name); | |
1233 | } | |
1234 | ||
c906108c SS |
1235 | /* Build a partial symbol table. */ |
1236 | ||
1237 | void | |
fba45db2 | 1238 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1239 | { |
c906108c SS |
1240 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1241 | ||
6502dd73 DJ |
1242 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1243 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1244 | |
1245 | if (dwarf_line_section) | |
6502dd73 | 1246 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1247 | else |
6502dd73 | 1248 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1249 | |
188dd5d6 | 1250 | if (dwarf_str_section) |
6502dd73 | 1251 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1252 | else |
6502dd73 | 1253 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1254 | |
188dd5d6 | 1255 | if (dwarf_macinfo_section) |
6502dd73 | 1256 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1257 | dwarf_macinfo_section); |
2e276125 | 1258 | else |
6502dd73 | 1259 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1260 | |
188dd5d6 | 1261 | if (dwarf_ranges_section) |
6502dd73 | 1262 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1263 | else |
6502dd73 | 1264 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1265 | |
188dd5d6 | 1266 | if (dwarf_loc_section) |
6502dd73 | 1267 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1268 | else |
6502dd73 | 1269 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1270 | |
ef96bde8 EZ |
1271 | if (mainline |
1272 | || (objfile->global_psymbols.size == 0 | |
1273 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1274 | { |
1275 | init_psymbol_list (objfile, 1024); | |
1276 | } | |
1277 | ||
1278 | #if 0 | |
1279 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1280 | { | |
d4f3574e | 1281 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1282 | .debug_pubnames sections */ |
1283 | ||
d4f3574e | 1284 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1285 | } |
1286 | else | |
1287 | #endif | |
1288 | /* only test this case for now */ | |
c5aa993b | 1289 | { |
c906108c | 1290 | /* In this case we have to work a bit harder */ |
d4f3574e | 1291 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1292 | } |
1293 | } | |
1294 | ||
1295 | #if 0 | |
1296 | /* Build the partial symbol table from the information in the | |
1297 | .debug_pubnames and .debug_aranges sections. */ | |
1298 | ||
1299 | static void | |
fba45db2 | 1300 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1301 | { |
1302 | bfd *abfd = objfile->obfd; | |
1303 | char *aranges_buffer, *pubnames_buffer; | |
1304 | char *aranges_ptr, *pubnames_ptr; | |
1305 | unsigned int entry_length, version, info_offset, info_size; | |
1306 | ||
1307 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1308 | dwarf_pubnames_section); |
c906108c | 1309 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1310 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1311 | { |
613e1657 | 1312 | struct comp_unit_head cu_header; |
891d2f0b | 1313 | unsigned int bytes_read; |
613e1657 KB |
1314 | |
1315 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1316 | &bytes_read); |
613e1657 | 1317 | pubnames_ptr += bytes_read; |
c906108c SS |
1318 | version = read_1_byte (abfd, pubnames_ptr); |
1319 | pubnames_ptr += 1; | |
1320 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1321 | pubnames_ptr += 4; | |
1322 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1323 | pubnames_ptr += 4; | |
1324 | } | |
1325 | ||
1326 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1327 | dwarf_aranges_section); |
c906108c SS |
1328 | |
1329 | } | |
1330 | #endif | |
1331 | ||
45452591 DE |
1332 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
1333 | ||
1334 | static inline int | |
1335 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
1336 | { | |
1337 | unsigned int bottom = cu_header->offset; | |
1338 | unsigned int top = (cu_header->offset | |
1339 | + cu_header->length | |
1340 | + cu_header->initial_length_size); | |
1341 | return (offset >= bottom && offset < top); | |
1342 | } | |
1343 | ||
107d2387 | 1344 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1345 | info_ptr. */ |
107d2387 | 1346 | |
fe1b8b76 | 1347 | static gdb_byte * |
107d2387 | 1348 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1349 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1350 | { |
1351 | int signed_addr; | |
891d2f0b | 1352 | unsigned int bytes_read; |
613e1657 KB |
1353 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1354 | &bytes_read); | |
1355 | info_ptr += bytes_read; | |
107d2387 AC |
1356 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1357 | info_ptr += 2; | |
613e1657 KB |
1358 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1359 | &bytes_read); | |
1360 | info_ptr += bytes_read; | |
107d2387 AC |
1361 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1362 | info_ptr += 1; | |
1363 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1364 | if (signed_addr < 0) | |
8e65ff28 | 1365 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1366 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1367 | cu_header->signed_addr_p = signed_addr; |
1368 | return info_ptr; | |
1369 | } | |
1370 | ||
fe1b8b76 JB |
1371 | static gdb_byte * |
1372 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1373 | bfd *abfd) |
1374 | { | |
fe1b8b76 | 1375 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1376 | |
1377 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1378 | ||
2b949cb6 | 1379 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1380 | error (_("Dwarf Error: wrong version in compilation unit header " |
1381 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1382 | 2, bfd_get_filename (abfd)); |
1383 | ||
1384 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1385 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1386 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1387 | (long) header->abbrev_offset, |
1388 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1389 | bfd_get_filename (abfd)); | |
1390 | ||
1391 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1392 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1393 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1394 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1395 | (long) header->length, |
1396 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1397 | bfd_get_filename (abfd)); | |
1398 | ||
1399 | return info_ptr; | |
1400 | } | |
1401 | ||
aaa75496 JB |
1402 | /* Allocate a new partial symtab for file named NAME and mark this new |
1403 | partial symtab as being an include of PST. */ | |
1404 | ||
1405 | static void | |
1406 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1407 | struct objfile *objfile) | |
1408 | { | |
1409 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1410 | ||
1411 | subpst->section_offsets = pst->section_offsets; | |
1412 | subpst->textlow = 0; | |
1413 | subpst->texthigh = 0; | |
1414 | ||
1415 | subpst->dependencies = (struct partial_symtab **) | |
1416 | obstack_alloc (&objfile->objfile_obstack, | |
1417 | sizeof (struct partial_symtab *)); | |
1418 | subpst->dependencies[0] = pst; | |
1419 | subpst->number_of_dependencies = 1; | |
1420 | ||
1421 | subpst->globals_offset = 0; | |
1422 | subpst->n_global_syms = 0; | |
1423 | subpst->statics_offset = 0; | |
1424 | subpst->n_static_syms = 0; | |
1425 | subpst->symtab = NULL; | |
1426 | subpst->read_symtab = pst->read_symtab; | |
1427 | subpst->readin = 0; | |
1428 | ||
1429 | /* No private part is necessary for include psymtabs. This property | |
1430 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1431 | the regular ones. */ |
58a9656e | 1432 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1433 | } |
1434 | ||
1435 | /* Read the Line Number Program data and extract the list of files | |
1436 | included by the source file represented by PST. Build an include | |
1437 | partial symtab for each of these included files. | |
1438 | ||
1439 | This procedure assumes that there *is* a Line Number Program in | |
1440 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1441 | before calling this procedure. */ | |
1442 | ||
1443 | static void | |
1444 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1445 | struct partial_die_info *pdi, | |
1446 | struct partial_symtab *pst) | |
1447 | { | |
1448 | struct objfile *objfile = cu->objfile; | |
1449 | bfd *abfd = objfile->obfd; | |
1450 | struct line_header *lh; | |
1451 | ||
1452 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1453 | if (lh == NULL) | |
1454 | return; /* No linetable, so no includes. */ | |
1455 | ||
1456 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1457 | ||
1458 | free_line_header (lh); | |
1459 | } | |
1460 | ||
1461 | ||
c906108c SS |
1462 | /* Build the partial symbol table by doing a quick pass through the |
1463 | .debug_info and .debug_abbrev sections. */ | |
1464 | ||
1465 | static void | |
fba45db2 | 1466 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1467 | { |
1468 | /* Instead of reading this into a big buffer, we should probably use | |
1469 | mmap() on architectures that support it. (FIXME) */ | |
1470 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1471 | gdb_byte *info_ptr; |
1472 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1473 | struct partial_die_info comp_unit_die; |
1474 | struct partial_symtab *pst; | |
ae038cb0 | 1475 | struct cleanup *back_to; |
e142c38c | 1476 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1477 | |
6502dd73 | 1478 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1479 | |
ae038cb0 DJ |
1480 | /* Any cached compilation units will be linked by the per-objfile |
1481 | read_in_chain. Make sure to free them when we're done. */ | |
1482 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1483 | ||
10b3939b DJ |
1484 | create_all_comp_units (objfile); |
1485 | ||
ff013f42 JK |
1486 | objfile->psymtabs_addrmap = addrmap_create_mutable |
1487 | (&objfile->objfile_obstack); | |
1488 | ||
6502dd73 | 1489 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1490 | length, only the individual functions to extract them (like |
72bf9492 | 1491 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1492 | the buffer is large enough to hold another complete object. |
1493 | ||
6502dd73 DJ |
1494 | At the moment, they don't actually check that. If .debug_info |
1495 | holds just one extra byte after the last compilation unit's dies, | |
1496 | then read_comp_unit_head will happily read off the end of the | |
1497 | buffer. read_partial_die is similarly casual. Those functions | |
1498 | should be fixed. | |
af703f96 JB |
1499 | |
1500 | For this loop condition, simply checking whether there's any data | |
1501 | left at all should be sufficient. */ | |
6502dd73 DJ |
1502 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1503 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1504 | { |
f3dd6933 | 1505 | struct cleanup *back_to_inner; |
e7c27a73 | 1506 | struct dwarf2_cu cu; |
72bf9492 DJ |
1507 | struct abbrev_info *abbrev; |
1508 | unsigned int bytes_read; | |
1509 | struct dwarf2_per_cu_data *this_cu; | |
1510 | ||
c906108c | 1511 | beg_of_comp_unit = info_ptr; |
c906108c | 1512 | |
72bf9492 DJ |
1513 | memset (&cu, 0, sizeof (cu)); |
1514 | ||
1515 | obstack_init (&cu.comp_unit_obstack); | |
1516 | ||
1517 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1518 | ||
e7c27a73 | 1519 | cu.objfile = objfile; |
72bf9492 | 1520 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1521 | |
57349743 | 1522 | /* Complete the cu_header */ |
6502dd73 | 1523 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
d00adf39 | 1524 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; |
57349743 | 1525 | |
e142c38c DJ |
1526 | cu.list_in_scope = &file_symbols; |
1527 | ||
c906108c | 1528 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1529 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1530 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1531 | |
10b3939b | 1532 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1533 | |
c906108c | 1534 | /* Read the compilation unit die */ |
72bf9492 DJ |
1535 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1536 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1537 | abfd, info_ptr, &cu); | |
c906108c | 1538 | |
31ffec48 DJ |
1539 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1540 | { | |
1541 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1542 | + cu.header.initial_length_size); | |
1543 | do_cleanups (back_to_inner); | |
1544 | continue; | |
1545 | } | |
1546 | ||
c906108c | 1547 | /* Set the language we're debugging */ |
e142c38c | 1548 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1549 | |
1550 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1551 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1552 | comp_unit_die.name ? comp_unit_die.name : "", |
ff013f42 JK |
1553 | /* TEXTLOW and TEXTHIGH are set below. */ |
1554 | 0, | |
c906108c SS |
1555 | objfile->global_psymbols.next, |
1556 | objfile->static_psymbols.next); | |
1557 | ||
ae038cb0 | 1558 | if (comp_unit_die.dirname) |
a683b3c0 TT |
1559 | pst->dirname = obsavestring (comp_unit_die.dirname, |
1560 | strlen (comp_unit_die.dirname), | |
1561 | &objfile->objfile_obstack); | |
57c22c6c | 1562 | |
10b3939b DJ |
1563 | pst->read_symtab_private = (char *) this_cu; |
1564 | ||
613e1657 | 1565 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1566 | |
1567 | /* Store the function that reads in the rest of the symbol table */ | |
1568 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1569 | ||
10b3939b DJ |
1570 | /* If this compilation unit was already read in, free the |
1571 | cached copy in order to read it in again. This is | |
1572 | necessary because we skipped some symbols when we first | |
1573 | read in the compilation unit (see load_partial_dies). | |
1574 | This problem could be avoided, but the benefit is | |
1575 | unclear. */ | |
1576 | if (this_cu->cu != NULL) | |
1577 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1578 | |
10b3939b | 1579 | cu.per_cu = this_cu; |
ae038cb0 | 1580 | |
10b3939b DJ |
1581 | /* Note that this is a pointer to our stack frame, being |
1582 | added to a global data structure. It will be cleaned up | |
1583 | in free_stack_comp_unit when we finish with this | |
1584 | compilation unit. */ | |
1585 | this_cu->cu = &cu; | |
ae038cb0 | 1586 | |
10b3939b | 1587 | this_cu->psymtab = pst; |
ae038cb0 | 1588 | |
ff013f42 JK |
1589 | /* Possibly set the default values of LOWPC and HIGHPC from |
1590 | `DW_AT_ranges'. */ | |
1591 | if (cu.has_ranges_offset) | |
1592 | { | |
1593 | if (dwarf2_ranges_read (cu.ranges_offset, &comp_unit_die.lowpc, | |
1594 | &comp_unit_die.highpc, &cu, pst)) | |
1595 | comp_unit_die.has_pc_info = 1; | |
1596 | } | |
1597 | ||
c906108c SS |
1598 | /* Check if comp unit has_children. |
1599 | If so, read the rest of the partial symbols from this comp unit. | |
1600 | If not, there's no more debug_info for this comp unit. */ | |
1601 | if (comp_unit_die.has_children) | |
1602 | { | |
72bf9492 DJ |
1603 | struct partial_die_info *first_die; |
1604 | ||
91c24f0a DC |
1605 | lowpc = ((CORE_ADDR) -1); |
1606 | highpc = ((CORE_ADDR) 0); | |
1607 | ||
72bf9492 DJ |
1608 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1609 | ||
1610 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1611 | |
91c24f0a DC |
1612 | /* If we didn't find a lowpc, set it to highpc to avoid |
1613 | complaints from `maint check'. */ | |
1614 | if (lowpc == ((CORE_ADDR) -1)) | |
1615 | lowpc = highpc; | |
72bf9492 | 1616 | |
c906108c SS |
1617 | /* If the compilation unit didn't have an explicit address range, |
1618 | then use the information extracted from its child dies. */ | |
0b010bcc | 1619 | if (! comp_unit_die.has_pc_info) |
c906108c | 1620 | { |
c5aa993b | 1621 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1622 | comp_unit_die.highpc = highpc; |
1623 | } | |
1624 | } | |
c5aa993b | 1625 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1626 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1627 | ||
ff013f42 JK |
1628 | /* Store the contiguous range; `DW_AT_ranges' range is stored above. The |
1629 | range can be also empty for CUs with no code. */ | |
1630 | if (!cu.has_ranges_offset && pst->textlow < pst->texthigh) | |
1631 | addrmap_set_empty (objfile->psymtabs_addrmap, pst->textlow, | |
1632 | pst->texthigh - 1, pst); | |
1633 | ||
c906108c SS |
1634 | pst->n_global_syms = objfile->global_psymbols.next - |
1635 | (objfile->global_psymbols.list + pst->globals_offset); | |
1636 | pst->n_static_syms = objfile->static_psymbols.next - | |
1637 | (objfile->static_psymbols.list + pst->statics_offset); | |
1638 | sort_pst_symbols (pst); | |
1639 | ||
1640 | /* If there is already a psymtab or symtab for a file of this | |
1641 | name, remove it. (If there is a symtab, more drastic things | |
1642 | also happen.) This happens in VxWorks. */ | |
1643 | free_named_symtabs (pst->filename); | |
1644 | ||
dd373385 EZ |
1645 | info_ptr = beg_of_comp_unit + cu.header.length |
1646 | + cu.header.initial_length_size; | |
1647 | ||
aaa75496 JB |
1648 | if (comp_unit_die.has_stmt_list) |
1649 | { | |
1650 | /* Get the list of files included in the current compilation unit, | |
1651 | and build a psymtab for each of them. */ | |
1652 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1653 | } | |
1654 | ||
f3dd6933 | 1655 | do_cleanups (back_to_inner); |
c906108c | 1656 | } |
ff013f42 JK |
1657 | |
1658 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
1659 | &objfile->objfile_obstack); | |
1660 | ||
ae038cb0 DJ |
1661 | do_cleanups (back_to); |
1662 | } | |
1663 | ||
1664 | /* Load the DIEs for a secondary CU into memory. */ | |
1665 | ||
1666 | static void | |
1667 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1668 | { | |
1669 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1670 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1671 | struct partial_die_info comp_unit_die; |
1672 | struct dwarf2_cu *cu; | |
1673 | struct abbrev_info *abbrev; | |
1674 | unsigned int bytes_read; | |
1675 | struct cleanup *back_to; | |
1676 | ||
1677 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1678 | beg_of_comp_unit = info_ptr; | |
1679 | ||
1680 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1681 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1682 | ||
1683 | obstack_init (&cu->comp_unit_obstack); | |
1684 | ||
1685 | cu->objfile = objfile; | |
1686 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1687 | ||
1688 | /* Complete the cu_header. */ | |
1689 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
d00adf39 | 1690 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; |
ae038cb0 DJ |
1691 | |
1692 | /* Read the abbrevs for this compilation unit into a table. */ | |
1693 | dwarf2_read_abbrevs (abfd, cu); | |
1694 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1695 | ||
1696 | /* Read the compilation unit die. */ | |
1697 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1698 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1699 | abfd, info_ptr, cu); | |
1700 | ||
1701 | /* Set the language we're debugging. */ | |
1702 | set_cu_language (comp_unit_die.language, cu); | |
1703 | ||
1704 | /* Link this compilation unit into the compilation unit tree. */ | |
1705 | this_cu->cu = cu; | |
1706 | cu->per_cu = this_cu; | |
f792889a | 1707 | cu->type_hash = cu->per_cu->type_hash; |
ae038cb0 DJ |
1708 | |
1709 | /* Check if comp unit has_children. | |
1710 | If so, read the rest of the partial symbols from this comp unit. | |
1711 | If not, there's no more debug_info for this comp unit. */ | |
1712 | if (comp_unit_die.has_children) | |
1713 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1714 | ||
1715 | do_cleanups (back_to); | |
1716 | } | |
1717 | ||
1718 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1719 | if an inter-comp-unit reference is found; presumably if there is one, | |
1720 | there will be many, and one will occur early in the .debug_info section. | |
1721 | So there's no point in building this list incrementally. */ | |
1722 | ||
1723 | static void | |
1724 | create_all_comp_units (struct objfile *objfile) | |
1725 | { | |
1726 | int n_allocated; | |
1727 | int n_comp_units; | |
1728 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1729 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1730 | |
1731 | n_comp_units = 0; | |
1732 | n_allocated = 10; | |
1733 | all_comp_units = xmalloc (n_allocated | |
1734 | * sizeof (struct dwarf2_per_cu_data *)); | |
1735 | ||
1736 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1737 | { | |
1738 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1739 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1740 | struct dwarf2_per_cu_data *this_cu; |
1741 | unsigned long offset; | |
891d2f0b | 1742 | unsigned int bytes_read; |
ae038cb0 DJ |
1743 | |
1744 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1745 | ||
1746 | /* Read just enough information to find out where the next | |
1747 | compilation unit is. */ | |
dd373385 | 1748 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1749 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1750 | &cu_header, &bytes_read); | |
1751 | ||
1752 | /* Save the compilation unit for later lookup. */ | |
1753 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1754 | sizeof (struct dwarf2_per_cu_data)); | |
1755 | memset (this_cu, 0, sizeof (*this_cu)); | |
1756 | this_cu->offset = offset; | |
1757 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1758 | ||
1759 | if (n_comp_units == n_allocated) | |
1760 | { | |
1761 | n_allocated *= 2; | |
1762 | all_comp_units = xrealloc (all_comp_units, | |
1763 | n_allocated | |
1764 | * sizeof (struct dwarf2_per_cu_data *)); | |
1765 | } | |
1766 | all_comp_units[n_comp_units++] = this_cu; | |
1767 | ||
1768 | info_ptr = info_ptr + this_cu->length; | |
1769 | } | |
1770 | ||
1771 | dwarf2_per_objfile->all_comp_units | |
1772 | = obstack_alloc (&objfile->objfile_obstack, | |
1773 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1774 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1775 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1776 | xfree (all_comp_units); | |
1777 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1778 | } |
1779 | ||
72bf9492 DJ |
1780 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1781 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1782 | in CU. */ | |
c906108c | 1783 | |
72bf9492 DJ |
1784 | static void |
1785 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1786 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1787 | { |
e7c27a73 | 1788 | struct objfile *objfile = cu->objfile; |
c906108c | 1789 | bfd *abfd = objfile->obfd; |
72bf9492 | 1790 | struct partial_die_info *pdi; |
c906108c | 1791 | |
91c24f0a DC |
1792 | /* Now, march along the PDI's, descending into ones which have |
1793 | interesting children but skipping the children of the other ones, | |
1794 | until we reach the end of the compilation unit. */ | |
c906108c | 1795 | |
72bf9492 | 1796 | pdi = first_die; |
91c24f0a | 1797 | |
72bf9492 DJ |
1798 | while (pdi != NULL) |
1799 | { | |
1800 | fixup_partial_die (pdi, cu); | |
c906108c | 1801 | |
91c24f0a DC |
1802 | /* Anonymous namespaces have no name but have interesting |
1803 | children, so we need to look at them. Ditto for anonymous | |
1804 | enums. */ | |
933c6fe4 | 1805 | |
72bf9492 DJ |
1806 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1807 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1808 | { |
72bf9492 | 1809 | switch (pdi->tag) |
c906108c SS |
1810 | { |
1811 | case DW_TAG_subprogram: | |
bc30ff58 | 1812 | add_partial_subprogram (pdi, lowpc, highpc, cu); |
c906108c SS |
1813 | break; |
1814 | case DW_TAG_variable: | |
1815 | case DW_TAG_typedef: | |
91c24f0a | 1816 | case DW_TAG_union_type: |
72bf9492 | 1817 | if (!pdi->is_declaration) |
63d06c5c | 1818 | { |
72bf9492 | 1819 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1820 | } |
1821 | break; | |
c906108c | 1822 | case DW_TAG_class_type: |
680b30c7 | 1823 | case DW_TAG_interface_type: |
c906108c | 1824 | case DW_TAG_structure_type: |
72bf9492 | 1825 | if (!pdi->is_declaration) |
c906108c | 1826 | { |
72bf9492 | 1827 | add_partial_symbol (pdi, cu); |
c906108c SS |
1828 | } |
1829 | break; | |
91c24f0a | 1830 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1831 | if (!pdi->is_declaration) |
1832 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1833 | break; |
1834 | case DW_TAG_base_type: | |
a02abb62 | 1835 | case DW_TAG_subrange_type: |
c906108c | 1836 | /* File scope base type definitions are added to the partial |
c5aa993b | 1837 | symbol table. */ |
72bf9492 | 1838 | add_partial_symbol (pdi, cu); |
c906108c | 1839 | break; |
d9fa45fe | 1840 | case DW_TAG_namespace: |
72bf9492 | 1841 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1842 | break; |
c906108c SS |
1843 | default: |
1844 | break; | |
1845 | } | |
1846 | } | |
1847 | ||
72bf9492 DJ |
1848 | /* If the die has a sibling, skip to the sibling. */ |
1849 | ||
1850 | pdi = pdi->die_sibling; | |
1851 | } | |
1852 | } | |
1853 | ||
1854 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1855 | |
72bf9492 | 1856 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1857 | name is concatenated with "::" and the partial DIE's name. For |
1858 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1859 | Enumerators are an exception; they use the scope of their parent |
1860 | enumeration type, i.e. the name of the enumeration type is not | |
1861 | prepended to the enumerator. | |
91c24f0a | 1862 | |
72bf9492 DJ |
1863 | There are two complexities. One is DW_AT_specification; in this |
1864 | case "parent" means the parent of the target of the specification, | |
1865 | instead of the direct parent of the DIE. The other is compilers | |
1866 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1867 | the fully qualified name of structure types from their members' | |
1868 | linkage names. This must be done using the DIE's children rather | |
1869 | than the children of any DW_AT_specification target. We only need | |
1870 | to do this for structures at the top level, i.e. if the target of | |
1871 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1872 | have a parent. */ | |
1873 | ||
1874 | /* Compute the scope prefix associated with PDI's parent, in | |
1875 | compilation unit CU. The result will be allocated on CU's | |
1876 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1877 | field. NULL is returned if no prefix is necessary. */ | |
1878 | static char * | |
1879 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1880 | struct dwarf2_cu *cu) | |
1881 | { | |
1882 | char *grandparent_scope; | |
1883 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1884 | |
72bf9492 DJ |
1885 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1886 | then this means the parent of the specification DIE. */ | |
1887 | ||
1888 | real_pdi = pdi; | |
72bf9492 | 1889 | while (real_pdi->has_specification) |
10b3939b | 1890 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1891 | |
1892 | parent = real_pdi->die_parent; | |
1893 | if (parent == NULL) | |
1894 | return NULL; | |
1895 | ||
1896 | if (parent->scope_set) | |
1897 | return parent->scope; | |
1898 | ||
1899 | fixup_partial_die (parent, cu); | |
1900 | ||
10b3939b | 1901 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1902 | |
1903 | if (parent->tag == DW_TAG_namespace | |
1904 | || parent->tag == DW_TAG_structure_type | |
1905 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 1906 | || parent->tag == DW_TAG_interface_type |
72bf9492 DJ |
1907 | || parent->tag == DW_TAG_union_type) |
1908 | { | |
1909 | if (grandparent_scope == NULL) | |
1910 | parent->scope = parent->name; | |
1911 | else | |
987504bb JJ |
1912 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1913 | parent->name, cu); | |
72bf9492 DJ |
1914 | } |
1915 | else if (parent->tag == DW_TAG_enumeration_type) | |
1916 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1917 | parent->scope = grandparent_scope; | |
1918 | else | |
1919 | { | |
1920 | /* FIXME drow/2004-04-01: What should we be doing with | |
1921 | function-local names? For partial symbols, we should probably be | |
1922 | ignoring them. */ | |
1923 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1924 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1925 | parent->tag, pdi->offset); |
1926 | parent->scope = grandparent_scope; | |
c906108c SS |
1927 | } |
1928 | ||
72bf9492 DJ |
1929 | parent->scope_set = 1; |
1930 | return parent->scope; | |
1931 | } | |
1932 | ||
1933 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1934 | CU. The result will be allocated with malloc. */ | |
1935 | static char * | |
1936 | partial_die_full_name (struct partial_die_info *pdi, | |
1937 | struct dwarf2_cu *cu) | |
1938 | { | |
1939 | char *parent_scope; | |
1940 | ||
1941 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1942 | if (parent_scope == NULL) | |
1943 | return NULL; | |
1944 | else | |
987504bb | 1945 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1946 | } |
1947 | ||
1948 | static void | |
72bf9492 | 1949 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1950 | { |
e7c27a73 | 1951 | struct objfile *objfile = cu->objfile; |
c906108c | 1952 | CORE_ADDR addr = 0; |
decbce07 | 1953 | char *actual_name = NULL; |
72bf9492 | 1954 | const char *my_prefix; |
5c4e30ca | 1955 | const struct partial_symbol *psym = NULL; |
e142c38c | 1956 | CORE_ADDR baseaddr; |
72bf9492 | 1957 | int built_actual_name = 0; |
e142c38c DJ |
1958 | |
1959 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1960 | |
72bf9492 | 1961 | if (pdi_needs_namespace (pdi->tag)) |
63d06c5c | 1962 | { |
72bf9492 DJ |
1963 | actual_name = partial_die_full_name (pdi, cu); |
1964 | if (actual_name) | |
1965 | built_actual_name = 1; | |
63d06c5c DC |
1966 | } |
1967 | ||
72bf9492 DJ |
1968 | if (actual_name == NULL) |
1969 | actual_name = pdi->name; | |
1970 | ||
c906108c SS |
1971 | switch (pdi->tag) |
1972 | { | |
1973 | case DW_TAG_subprogram: | |
2cfa0c8d | 1974 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 1975 | { |
2cfa0c8d JB |
1976 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
1977 | of the global scope. But in Ada, we want to be able to access | |
1978 | nested procedures globally. So all Ada subprograms are stored | |
1979 | in the global scope. */ | |
38d518c9 | 1980 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1981 | mst_text, objfile); */ |
38d518c9 | 1982 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1983 | VAR_DOMAIN, LOC_BLOCK, |
1984 | &objfile->global_psymbols, | |
1985 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1986 | cu->language, objfile); |
c906108c SS |
1987 | } |
1988 | else | |
1989 | { | |
38d518c9 | 1990 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1991 | mst_file_text, objfile); */ |
38d518c9 | 1992 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1993 | VAR_DOMAIN, LOC_BLOCK, |
1994 | &objfile->static_psymbols, | |
1995 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1996 | cu->language, objfile); |
c906108c SS |
1997 | } |
1998 | break; | |
1999 | case DW_TAG_variable: | |
2000 | if (pdi->is_external) | |
2001 | { | |
2002 | /* Global Variable. | |
2003 | Don't enter into the minimal symbol tables as there is | |
2004 | a minimal symbol table entry from the ELF symbols already. | |
2005 | Enter into partial symbol table if it has a location | |
2006 | descriptor or a type. | |
2007 | If the location descriptor is missing, new_symbol will create | |
2008 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
2009 | be determined from the minimal symbol table whenever the variable | |
2010 | is referenced. | |
2011 | The address for the partial symbol table entry is not | |
2012 | used by GDB, but it comes in handy for debugging partial symbol | |
2013 | table building. */ | |
2014 | ||
2015 | if (pdi->locdesc) | |
e7c27a73 | 2016 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 2017 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 2018 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2019 | VAR_DOMAIN, LOC_STATIC, |
2020 | &objfile->global_psymbols, | |
2021 | 0, addr + baseaddr, | |
e142c38c | 2022 | cu->language, objfile); |
c906108c SS |
2023 | } |
2024 | else | |
2025 | { | |
2026 | /* Static Variable. Skip symbols without location descriptors. */ | |
2027 | if (pdi->locdesc == NULL) | |
decbce07 MS |
2028 | { |
2029 | if (built_actual_name) | |
2030 | xfree (actual_name); | |
2031 | return; | |
2032 | } | |
e7c27a73 | 2033 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 2034 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 2035 | mst_file_data, objfile); */ |
38d518c9 | 2036 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2037 | VAR_DOMAIN, LOC_STATIC, |
2038 | &objfile->static_psymbols, | |
2039 | 0, addr + baseaddr, | |
e142c38c | 2040 | cu->language, objfile); |
c906108c SS |
2041 | } |
2042 | break; | |
2043 | case DW_TAG_typedef: | |
2044 | case DW_TAG_base_type: | |
a02abb62 | 2045 | case DW_TAG_subrange_type: |
38d518c9 | 2046 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2047 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 2048 | &objfile->static_psymbols, |
e142c38c | 2049 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2050 | break; |
72bf9492 DJ |
2051 | case DW_TAG_namespace: |
2052 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
2053 | VAR_DOMAIN, LOC_TYPEDEF, | |
2054 | &objfile->global_psymbols, | |
2055 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
2056 | break; | |
c906108c | 2057 | case DW_TAG_class_type: |
680b30c7 | 2058 | case DW_TAG_interface_type: |
c906108c SS |
2059 | case DW_TAG_structure_type: |
2060 | case DW_TAG_union_type: | |
2061 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
2062 | /* Skip external references. The DWARF standard says in the section |
2063 | about "Structure, Union, and Class Type Entries": "An incomplete | |
2064 | structure, union or class type is represented by a structure, | |
2065 | union or class entry that does not have a byte size attribute | |
2066 | and that has a DW_AT_declaration attribute." */ | |
2067 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
2068 | { |
2069 | if (built_actual_name) | |
2070 | xfree (actual_name); | |
2071 | return; | |
2072 | } | |
fa4028e9 | 2073 | |
63d06c5c DC |
2074 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
2075 | static vs. global. */ | |
38d518c9 | 2076 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2077 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
2078 | (cu->language == language_cplus |
2079 | || cu->language == language_java) | |
63d06c5c DC |
2080 | ? &objfile->global_psymbols |
2081 | : &objfile->static_psymbols, | |
e142c38c | 2082 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2083 | |
c906108c SS |
2084 | break; |
2085 | case DW_TAG_enumerator: | |
38d518c9 | 2086 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2087 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2088 | (cu->language == language_cplus |
2089 | || cu->language == language_java) | |
f6fe98ef DJ |
2090 | ? &objfile->global_psymbols |
2091 | : &objfile->static_psymbols, | |
e142c38c | 2092 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2093 | break; |
2094 | default: | |
2095 | break; | |
2096 | } | |
5c4e30ca DC |
2097 | |
2098 | /* Check to see if we should scan the name for possible namespace | |
2099 | info. Only do this if this is C++, if we don't have namespace | |
2100 | debugging info in the file, if the psym is of an appropriate type | |
2101 | (otherwise we'll have psym == NULL), and if we actually had a | |
2102 | mangled name to begin with. */ | |
2103 | ||
72bf9492 DJ |
2104 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2105 | cases which do not set PSYM above? */ | |
2106 | ||
e142c38c | 2107 | if (cu->language == language_cplus |
72bf9492 | 2108 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2109 | && psym != NULL |
2110 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2111 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2112 | objfile); | |
72bf9492 DJ |
2113 | |
2114 | if (built_actual_name) | |
2115 | xfree (actual_name); | |
c906108c SS |
2116 | } |
2117 | ||
72bf9492 DJ |
2118 | /* Determine whether a die of type TAG living in a C++ class or |
2119 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2120 | name listed in the die. */ |
2121 | ||
2122 | static int | |
72bf9492 | 2123 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2124 | { |
63d06c5c DC |
2125 | switch (tag) |
2126 | { | |
72bf9492 | 2127 | case DW_TAG_namespace: |
63d06c5c DC |
2128 | case DW_TAG_typedef: |
2129 | case DW_TAG_class_type: | |
680b30c7 | 2130 | case DW_TAG_interface_type: |
63d06c5c DC |
2131 | case DW_TAG_structure_type: |
2132 | case DW_TAG_union_type: | |
2133 | case DW_TAG_enumeration_type: | |
2134 | case DW_TAG_enumerator: | |
2135 | return 1; | |
2136 | default: | |
2137 | return 0; | |
2138 | } | |
2139 | } | |
2140 | ||
5c4e30ca DC |
2141 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2142 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2143 | the name of the enclosing namespace. */ | |
91c24f0a | 2144 | |
72bf9492 DJ |
2145 | static void |
2146 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2147 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2148 | struct dwarf2_cu *cu) |
91c24f0a | 2149 | { |
e7c27a73 | 2150 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2151 | |
72bf9492 | 2152 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2153 | |
72bf9492 | 2154 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2155 | |
2156 | /* Now scan partial symbols in that namespace. */ | |
2157 | ||
91c24f0a | 2158 | if (pdi->has_children) |
72bf9492 | 2159 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2160 | } |
2161 | ||
bc30ff58 JB |
2162 | /* Read a partial die corresponding to a subprogram and create a partial |
2163 | symbol for that subprogram. When the CU language allows it, this | |
2164 | routine also defines a partial symbol for each nested subprogram | |
2165 | that this subprogram contains. | |
2166 | ||
2167 | DIE my also be a lexical block, in which case we simply search | |
2168 | recursively for suprograms defined inside that lexical block. | |
2169 | Again, this is only performed when the CU language allows this | |
2170 | type of definitions. */ | |
2171 | ||
2172 | static void | |
2173 | add_partial_subprogram (struct partial_die_info *pdi, | |
2174 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
2175 | struct dwarf2_cu *cu) | |
2176 | { | |
2177 | if (pdi->tag == DW_TAG_subprogram) | |
2178 | { | |
2179 | if (pdi->has_pc_info) | |
2180 | { | |
2181 | if (pdi->lowpc < *lowpc) | |
2182 | *lowpc = pdi->lowpc; | |
2183 | if (pdi->highpc > *highpc) | |
2184 | *highpc = pdi->highpc; | |
2185 | if (!pdi->is_declaration) | |
2186 | add_partial_symbol (pdi, cu); | |
2187 | } | |
2188 | } | |
2189 | ||
2190 | if (! pdi->has_children) | |
2191 | return; | |
2192 | ||
2193 | if (cu->language == language_ada) | |
2194 | { | |
2195 | pdi = pdi->die_child; | |
2196 | while (pdi != NULL) | |
2197 | { | |
2198 | fixup_partial_die (pdi, cu); | |
2199 | if (pdi->tag == DW_TAG_subprogram | |
2200 | || pdi->tag == DW_TAG_lexical_block) | |
2201 | add_partial_subprogram (pdi, lowpc, highpc, cu); | |
2202 | pdi = pdi->die_sibling; | |
2203 | } | |
2204 | } | |
2205 | } | |
2206 | ||
72bf9492 DJ |
2207 | /* See if we can figure out if the class lives in a namespace. We do |
2208 | this by looking for a member function; its demangled name will | |
2209 | contain namespace info, if there is any. */ | |
63d06c5c | 2210 | |
72bf9492 DJ |
2211 | static void |
2212 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2213 | struct dwarf2_cu *cu) | |
63d06c5c | 2214 | { |
987504bb JJ |
2215 | if ((cu->language == language_cplus |
2216 | || cu->language == language_java) | |
72bf9492 | 2217 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2218 | && struct_pdi->has_children) |
2219 | { | |
63d06c5c DC |
2220 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2221 | what template types look like, because the demangler | |
2222 | frequently doesn't give the same name as the debug info. We | |
2223 | could fix this by only using the demangled name to get the | |
134d01f1 | 2224 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2225 | |
72bf9492 DJ |
2226 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2227 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2228 | |
72bf9492 DJ |
2229 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2230 | we should not do this. We'll prepend the parent's fully qualified | |
2231 | name when we create the partial symbol. */ | |
5d51ca54 | 2232 | |
72bf9492 | 2233 | real_pdi = struct_pdi; |
72bf9492 | 2234 | while (real_pdi->has_specification) |
10b3939b | 2235 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2236 | |
72bf9492 DJ |
2237 | if (real_pdi->die_parent != NULL) |
2238 | return; | |
63d06c5c | 2239 | |
72bf9492 DJ |
2240 | while (child_pdi != NULL) |
2241 | { | |
2242 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2243 | { |
72bf9492 | 2244 | char *actual_class_name |
31c27f77 JJ |
2245 | = language_class_name_from_physname (cu->language_defn, |
2246 | child_pdi->name); | |
63d06c5c | 2247 | if (actual_class_name != NULL) |
72bf9492 DJ |
2248 | { |
2249 | struct_pdi->name | |
2250 | = obsavestring (actual_class_name, | |
2251 | strlen (actual_class_name), | |
2252 | &cu->comp_unit_obstack); | |
2253 | xfree (actual_class_name); | |
2254 | } | |
63d06c5c DC |
2255 | break; |
2256 | } | |
72bf9492 DJ |
2257 | |
2258 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2259 | } |
2260 | } | |
63d06c5c DC |
2261 | } |
2262 | ||
91c24f0a DC |
2263 | /* Read a partial die corresponding to an enumeration type. */ |
2264 | ||
72bf9492 DJ |
2265 | static void |
2266 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2267 | struct dwarf2_cu *cu) | |
91c24f0a | 2268 | { |
e7c27a73 | 2269 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2270 | bfd *abfd = objfile->obfd; |
72bf9492 | 2271 | struct partial_die_info *pdi; |
91c24f0a DC |
2272 | |
2273 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2274 | add_partial_symbol (enum_pdi, cu); |
2275 | ||
2276 | pdi = enum_pdi->die_child; | |
2277 | while (pdi) | |
91c24f0a | 2278 | { |
72bf9492 | 2279 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2280 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2281 | else |
72bf9492 DJ |
2282 | add_partial_symbol (pdi, cu); |
2283 | pdi = pdi->die_sibling; | |
91c24f0a | 2284 | } |
91c24f0a DC |
2285 | } |
2286 | ||
4bb7a0a7 DJ |
2287 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2288 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2289 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2290 | the initial number. */ | |
2291 | ||
2292 | static struct abbrev_info * | |
fe1b8b76 | 2293 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2294 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2295 | { |
2296 | bfd *abfd = cu->objfile->obfd; | |
2297 | unsigned int abbrev_number; | |
2298 | struct abbrev_info *abbrev; | |
2299 | ||
2300 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2301 | ||
2302 | if (abbrev_number == 0) | |
2303 | return NULL; | |
2304 | ||
2305 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2306 | if (!abbrev) | |
2307 | { | |
8a3fe4f8 | 2308 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2309 | bfd_get_filename (abfd)); |
2310 | } | |
2311 | ||
2312 | return abbrev; | |
2313 | } | |
2314 | ||
2315 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2316 | pointer to the end of a series of DIEs, terminated by an empty | |
2317 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2318 | ||
fe1b8b76 JB |
2319 | static gdb_byte * |
2320 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2321 | { |
2322 | struct abbrev_info *abbrev; | |
2323 | unsigned int bytes_read; | |
2324 | ||
2325 | while (1) | |
2326 | { | |
2327 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2328 | if (abbrev == NULL) | |
2329 | return info_ptr + bytes_read; | |
2330 | else | |
2331 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2336 | should point just after the initial uleb128 of a DIE, and the | |
2337 | abbrev corresponding to that skipped uleb128 should be passed in | |
2338 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2339 | children. */ | |
2340 | ||
fe1b8b76 JB |
2341 | static gdb_byte * |
2342 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2343 | struct dwarf2_cu *cu) |
2344 | { | |
2345 | unsigned int bytes_read; | |
2346 | struct attribute attr; | |
2347 | bfd *abfd = cu->objfile->obfd; | |
2348 | unsigned int form, i; | |
2349 | ||
2350 | for (i = 0; i < abbrev->num_attrs; i++) | |
2351 | { | |
2352 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2353 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2354 | { | |
2355 | read_attribute (&attr, &abbrev->attrs[i], | |
2356 | abfd, info_ptr, cu); | |
2357 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2358 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2359 | else |
6502dd73 DJ |
2360 | return dwarf2_per_objfile->info_buffer |
2361 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2362 | } |
2363 | ||
2364 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2365 | form = abbrev->attrs[i].form; | |
2366 | skip_attribute: | |
2367 | switch (form) | |
2368 | { | |
2369 | case DW_FORM_addr: | |
2370 | case DW_FORM_ref_addr: | |
2371 | info_ptr += cu->header.addr_size; | |
2372 | break; | |
2373 | case DW_FORM_data1: | |
2374 | case DW_FORM_ref1: | |
2375 | case DW_FORM_flag: | |
2376 | info_ptr += 1; | |
2377 | break; | |
2378 | case DW_FORM_data2: | |
2379 | case DW_FORM_ref2: | |
2380 | info_ptr += 2; | |
2381 | break; | |
2382 | case DW_FORM_data4: | |
2383 | case DW_FORM_ref4: | |
2384 | info_ptr += 4; | |
2385 | break; | |
2386 | case DW_FORM_data8: | |
2387 | case DW_FORM_ref8: | |
2388 | info_ptr += 8; | |
2389 | break; | |
2390 | case DW_FORM_string: | |
2391 | read_string (abfd, info_ptr, &bytes_read); | |
2392 | info_ptr += bytes_read; | |
2393 | break; | |
2394 | case DW_FORM_strp: | |
2395 | info_ptr += cu->header.offset_size; | |
2396 | break; | |
2397 | case DW_FORM_block: | |
2398 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2399 | info_ptr += bytes_read; | |
2400 | break; | |
2401 | case DW_FORM_block1: | |
2402 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2403 | break; | |
2404 | case DW_FORM_block2: | |
2405 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2406 | break; | |
2407 | case DW_FORM_block4: | |
2408 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2409 | break; | |
2410 | case DW_FORM_sdata: | |
2411 | case DW_FORM_udata: | |
2412 | case DW_FORM_ref_udata: | |
2413 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2414 | break; | |
2415 | case DW_FORM_indirect: | |
2416 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2417 | info_ptr += bytes_read; | |
2418 | /* We need to continue parsing from here, so just go back to | |
2419 | the top. */ | |
2420 | goto skip_attribute; | |
2421 | ||
2422 | default: | |
8a3fe4f8 | 2423 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2424 | dwarf_form_name (form), |
2425 | bfd_get_filename (abfd)); | |
2426 | } | |
2427 | } | |
2428 | ||
2429 | if (abbrev->has_children) | |
2430 | return skip_children (info_ptr, cu); | |
2431 | else | |
2432 | return info_ptr; | |
2433 | } | |
2434 | ||
2435 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2436 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2437 | |
fe1b8b76 JB |
2438 | static gdb_byte * |
2439 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2440 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2441 | { |
2442 | /* Do we know the sibling already? */ | |
72bf9492 | 2443 | |
91c24f0a DC |
2444 | if (orig_pdi->sibling) |
2445 | return orig_pdi->sibling; | |
2446 | ||
2447 | /* Are there any children to deal with? */ | |
2448 | ||
2449 | if (!orig_pdi->has_children) | |
2450 | return info_ptr; | |
2451 | ||
4bb7a0a7 | 2452 | /* Skip the children the long way. */ |
91c24f0a | 2453 | |
4bb7a0a7 | 2454 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2455 | } |
2456 | ||
c906108c SS |
2457 | /* Expand this partial symbol table into a full symbol table. */ |
2458 | ||
2459 | static void | |
fba45db2 | 2460 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2461 | { |
2462 | /* FIXME: This is barely more than a stub. */ | |
2463 | if (pst != NULL) | |
2464 | { | |
2465 | if (pst->readin) | |
2466 | { | |
8a3fe4f8 | 2467 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2468 | } |
2469 | else | |
2470 | { | |
2471 | if (info_verbose) | |
2472 | { | |
a3f17187 | 2473 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2474 | gdb_flush (gdb_stdout); |
2475 | } | |
2476 | ||
10b3939b DJ |
2477 | /* Restore our global data. */ |
2478 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2479 | dwarf2_objfile_data_key); | |
2480 | ||
c906108c SS |
2481 | psymtab_to_symtab_1 (pst); |
2482 | ||
2483 | /* Finish up the debug error message. */ | |
2484 | if (info_verbose) | |
a3f17187 | 2485 | printf_filtered (_("done.\n")); |
c906108c SS |
2486 | } |
2487 | } | |
2488 | } | |
2489 | ||
10b3939b DJ |
2490 | /* Add PER_CU to the queue. */ |
2491 | ||
2492 | static void | |
03dd20cc | 2493 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
2494 | { |
2495 | struct dwarf2_queue_item *item; | |
2496 | ||
2497 | per_cu->queued = 1; | |
2498 | item = xmalloc (sizeof (*item)); | |
2499 | item->per_cu = per_cu; | |
2500 | item->next = NULL; | |
2501 | ||
2502 | if (dwarf2_queue == NULL) | |
2503 | dwarf2_queue = item; | |
2504 | else | |
2505 | dwarf2_queue_tail->next = item; | |
2506 | ||
2507 | dwarf2_queue_tail = item; | |
03dd20cc DJ |
2508 | |
2509 | /* Either PER_CU is the CU we want to process, or we're following a reference | |
2510 | pointing into PER_CU. Either way, we need its DIEs now. */ | |
2511 | load_full_comp_unit (item->per_cu, objfile); | |
2512 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2513 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
10b3939b DJ |
2514 | } |
2515 | ||
2516 | /* Process the queue. */ | |
2517 | ||
2518 | static void | |
2519 | process_queue (struct objfile *objfile) | |
2520 | { | |
2521 | struct dwarf2_queue_item *item, *next_item; | |
2522 | ||
03dd20cc DJ |
2523 | /* The queue starts out with one item, but following a DIE reference |
2524 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
2525 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
2526 | { | |
31ffec48 | 2527 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2528 | process_full_comp_unit (item->per_cu); |
2529 | ||
2530 | item->per_cu->queued = 0; | |
2531 | next_item = item->next; | |
2532 | xfree (item); | |
2533 | } | |
2534 | ||
2535 | dwarf2_queue_tail = NULL; | |
2536 | } | |
2537 | ||
2538 | /* Free all allocated queue entries. This function only releases anything if | |
2539 | an error was thrown; if the queue was processed then it would have been | |
2540 | freed as we went along. */ | |
2541 | ||
2542 | static void | |
2543 | dwarf2_release_queue (void *dummy) | |
2544 | { | |
2545 | struct dwarf2_queue_item *item, *last; | |
2546 | ||
2547 | item = dwarf2_queue; | |
2548 | while (item) | |
2549 | { | |
2550 | /* Anything still marked queued is likely to be in an | |
2551 | inconsistent state, so discard it. */ | |
2552 | if (item->per_cu->queued) | |
2553 | { | |
2554 | if (item->per_cu->cu != NULL) | |
2555 | free_one_cached_comp_unit (item->per_cu->cu); | |
2556 | item->per_cu->queued = 0; | |
2557 | } | |
2558 | ||
2559 | last = item; | |
2560 | item = item->next; | |
2561 | xfree (last); | |
2562 | } | |
2563 | ||
2564 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2565 | } | |
2566 | ||
2567 | /* Read in full symbols for PST, and anything it depends on. */ | |
2568 | ||
c906108c | 2569 | static void |
fba45db2 | 2570 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2571 | { |
10b3939b | 2572 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2573 | struct cleanup *back_to; |
aaa75496 JB |
2574 | int i; |
2575 | ||
2576 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2577 | if (!pst->dependencies[i]->readin) | |
2578 | { | |
2579 | /* Inform about additional files that need to be read in. */ | |
2580 | if (info_verbose) | |
2581 | { | |
a3f17187 | 2582 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2583 | fputs_filtered (" ", gdb_stdout); |
2584 | wrap_here (""); | |
2585 | fputs_filtered ("and ", gdb_stdout); | |
2586 | wrap_here (""); | |
2587 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2588 | wrap_here (""); /* Flush output */ | |
2589 | gdb_flush (gdb_stdout); | |
2590 | } | |
2591 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2592 | } | |
2593 | ||
10b3939b DJ |
2594 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2595 | ||
2596 | if (per_cu == NULL) | |
aaa75496 JB |
2597 | { |
2598 | /* It's an include file, no symbols to read for it. | |
2599 | Everything is in the parent symtab. */ | |
2600 | pst->readin = 1; | |
2601 | return; | |
2602 | } | |
c906108c | 2603 | |
10b3939b DJ |
2604 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2605 | ||
03dd20cc | 2606 | queue_comp_unit (per_cu, pst->objfile); |
10b3939b DJ |
2607 | |
2608 | process_queue (pst->objfile); | |
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 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2618 | ||
2619 | static struct dwarf2_cu * | |
31ffec48 | 2620 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2621 | { |
31ffec48 | 2622 | bfd *abfd = objfile->obfd; |
10b3939b DJ |
2623 | struct dwarf2_cu *cu; |
2624 | unsigned long offset; | |
fe1b8b76 | 2625 | gdb_byte *info_ptr; |
10b3939b DJ |
2626 | struct cleanup *back_to, *free_cu_cleanup; |
2627 | struct attribute *attr; | |
2628 | CORE_ADDR baseaddr; | |
6502dd73 | 2629 | |
c906108c | 2630 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2631 | offset = per_cu->offset; |
6502dd73 DJ |
2632 | |
2633 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2634 | |
10b3939b DJ |
2635 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2636 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2637 | |
10b3939b DJ |
2638 | /* If an error occurs while loading, release our storage. */ |
2639 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2640 | |
31ffec48 | 2641 | cu->objfile = objfile; |
e7c27a73 | 2642 | |
c906108c | 2643 | /* read in the comp_unit header */ |
10b3939b | 2644 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2645 | |
2646 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2647 | dwarf2_read_abbrevs (abfd, cu); |
2648 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2649 | ||
2650 | cu->header.offset = offset; | |
c906108c | 2651 | |
10b3939b DJ |
2652 | cu->per_cu = per_cu; |
2653 | per_cu->cu = cu; | |
f792889a | 2654 | cu->type_hash = per_cu->type_hash; |
e142c38c | 2655 | |
10b3939b DJ |
2656 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2657 | obstack_init (&cu->comp_unit_obstack); | |
2658 | ||
2659 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2660 | ||
2661 | /* We try not to read any attributes in this function, because not | |
2662 | all objfiles needed for references have been loaded yet, and symbol | |
2663 | table processing isn't initialized. But we have to set the CU language, | |
2664 | or we won't be able to build types correctly. */ | |
2665 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2666 | if (attr) | |
2667 | set_cu_language (DW_UNSND (attr), cu); | |
2668 | else | |
2669 | set_cu_language (language_minimal, cu); | |
2670 | ||
2671 | do_cleanups (back_to); | |
e142c38c | 2672 | |
10b3939b DJ |
2673 | /* We've successfully allocated this compilation unit. Let our caller |
2674 | clean it up when finished with it. */ | |
2675 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2676 | |
10b3939b DJ |
2677 | return cu; |
2678 | } | |
2679 | ||
2680 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2681 | already been loaded into memory. */ | |
2682 | ||
2683 | static void | |
2684 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2685 | { | |
2686 | struct partial_symtab *pst = per_cu->psymtab; | |
2687 | struct dwarf2_cu *cu = per_cu->cu; | |
2688 | struct objfile *objfile = pst->objfile; | |
2689 | bfd *abfd = objfile->obfd; | |
2690 | CORE_ADDR lowpc, highpc; | |
2691 | struct symtab *symtab; | |
2692 | struct cleanup *back_to; | |
2693 | struct attribute *attr; | |
2694 | CORE_ADDR baseaddr; | |
2695 | ||
2696 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2697 | ||
10b3939b DJ |
2698 | buildsym_init (); |
2699 | back_to = make_cleanup (really_free_pendings, NULL); | |
2700 | ||
2701 | cu->list_in_scope = &file_symbols; | |
c906108c | 2702 | |
0d53c4c4 DJ |
2703 | /* Find the base address of the compilation unit for range lists and |
2704 | location lists. It will normally be specified by DW_AT_low_pc. | |
2705 | In DWARF-3 draft 4, the base address could be overridden by | |
2706 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2707 | compilation units with discontinuous ranges. */ | |
2708 | ||
d00adf39 DE |
2709 | cu->base_known = 0; |
2710 | cu->base_address = 0; | |
0d53c4c4 | 2711 | |
10b3939b | 2712 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2713 | if (attr) |
2714 | { | |
d00adf39 DE |
2715 | cu->base_address = DW_ADDR (attr); |
2716 | cu->base_known = 1; | |
0d53c4c4 DJ |
2717 | } |
2718 | else | |
2719 | { | |
10b3939b | 2720 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2721 | if (attr) |
2722 | { | |
d00adf39 DE |
2723 | cu->base_address = DW_ADDR (attr); |
2724 | cu->base_known = 1; | |
0d53c4c4 DJ |
2725 | } |
2726 | } | |
2727 | ||
c906108c | 2728 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2729 | process_die (cu->dies, cu); |
c906108c | 2730 | |
fae299cd DC |
2731 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2732 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2733 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2734 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2735 | |
613e1657 | 2736 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2737 | |
2738 | /* Set symtab language to language from DW_AT_language. | |
2739 | If the compilation is from a C file generated by language preprocessors, | |
2740 | do not set the language if it was already deduced by start_subfile. */ | |
2741 | if (symtab != NULL | |
10b3939b | 2742 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2743 | { |
10b3939b | 2744 | symtab->language = cu->language; |
c906108c SS |
2745 | } |
2746 | pst->symtab = symtab; | |
2747 | pst->readin = 1; | |
c906108c SS |
2748 | |
2749 | do_cleanups (back_to); | |
2750 | } | |
2751 | ||
2752 | /* Process a die and its children. */ | |
2753 | ||
2754 | static void | |
e7c27a73 | 2755 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2756 | { |
2757 | switch (die->tag) | |
2758 | { | |
2759 | case DW_TAG_padding: | |
2760 | break; | |
2761 | case DW_TAG_compile_unit: | |
e7c27a73 | 2762 | read_file_scope (die, cu); |
c906108c SS |
2763 | break; |
2764 | case DW_TAG_subprogram: | |
e7c27a73 | 2765 | read_func_scope (die, cu); |
c906108c SS |
2766 | break; |
2767 | case DW_TAG_inlined_subroutine: | |
2768 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2769 | They could be used to set breakpoints on all inlined instances |
2770 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2771 | break; |
2772 | case DW_TAG_lexical_block: | |
14898363 L |
2773 | case DW_TAG_try_block: |
2774 | case DW_TAG_catch_block: | |
e7c27a73 | 2775 | read_lexical_block_scope (die, cu); |
c906108c SS |
2776 | break; |
2777 | case DW_TAG_class_type: | |
680b30c7 | 2778 | case DW_TAG_interface_type: |
c906108c SS |
2779 | case DW_TAG_structure_type: |
2780 | case DW_TAG_union_type: | |
134d01f1 | 2781 | process_structure_scope (die, cu); |
c906108c SS |
2782 | break; |
2783 | case DW_TAG_enumeration_type: | |
134d01f1 | 2784 | process_enumeration_scope (die, cu); |
c906108c | 2785 | break; |
134d01f1 | 2786 | |
f792889a DJ |
2787 | /* These dies have a type, but processing them does not create |
2788 | a symbol or recurse to process the children. Therefore we can | |
2789 | read them on-demand through read_type_die. */ | |
c906108c | 2790 | case DW_TAG_subroutine_type: |
72019c9c | 2791 | case DW_TAG_set_type: |
c906108c | 2792 | case DW_TAG_array_type: |
c906108c | 2793 | case DW_TAG_pointer_type: |
c906108c | 2794 | case DW_TAG_ptr_to_member_type: |
c906108c | 2795 | case DW_TAG_reference_type: |
c906108c | 2796 | case DW_TAG_string_type: |
c906108c | 2797 | break; |
134d01f1 | 2798 | |
c906108c | 2799 | case DW_TAG_base_type: |
a02abb62 | 2800 | case DW_TAG_subrange_type: |
134d01f1 DJ |
2801 | /* Add a typedef symbol for the type definition, if it has a |
2802 | DW_AT_name. */ | |
f792889a | 2803 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 2804 | break; |
c906108c | 2805 | case DW_TAG_common_block: |
e7c27a73 | 2806 | read_common_block (die, cu); |
c906108c SS |
2807 | break; |
2808 | case DW_TAG_common_inclusion: | |
2809 | break; | |
d9fa45fe | 2810 | case DW_TAG_namespace: |
63d06c5c | 2811 | processing_has_namespace_info = 1; |
e7c27a73 | 2812 | read_namespace (die, cu); |
d9fa45fe DC |
2813 | break; |
2814 | case DW_TAG_imported_declaration: | |
2815 | case DW_TAG_imported_module: | |
2816 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2817 | information contained in these. DW_TAG_imported_declaration | |
2818 | dies shouldn't have children; DW_TAG_imported_module dies | |
2819 | shouldn't in the C++ case, but conceivably could in the | |
d68209e4 | 2820 | Fortran case. */ |
63d06c5c | 2821 | processing_has_namespace_info = 1; |
d68209e4 JK |
2822 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
2823 | dwarf_tag_name (die->tag)); | |
d9fa45fe | 2824 | break; |
c906108c | 2825 | default: |
e7c27a73 | 2826 | new_symbol (die, NULL, cu); |
c906108c SS |
2827 | break; |
2828 | } | |
2829 | } | |
2830 | ||
0114d602 DJ |
2831 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
2832 | If scope qualifiers are appropriate they will be added. The result | |
2833 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
2834 | not have a name. */ | |
2835 | ||
2836 | static const char * | |
2837 | dwarf2_full_name (struct die_info *die, struct dwarf2_cu *cu) | |
2838 | { | |
2839 | struct attribute *attr; | |
2840 | char *prefix, *name; | |
2841 | struct ui_file *buf = NULL; | |
2842 | ||
2843 | name = dwarf2_name (die, cu); | |
2844 | if (!name) | |
2845 | return NULL; | |
2846 | ||
2847 | /* These are the only languages we know how to qualify names in. */ | |
2848 | if (cu->language != language_cplus | |
2849 | && cu->language != language_java) | |
2850 | return name; | |
2851 | ||
2852 | /* If no prefix is necessary for this type of DIE, return the | |
2853 | unqualified name. The other three tags listed could be handled | |
2854 | in pdi_needs_namespace, but that requires broader changes. */ | |
2855 | if (!pdi_needs_namespace (die->tag) | |
2856 | && die->tag != DW_TAG_subprogram | |
2857 | && die->tag != DW_TAG_variable | |
2858 | && die->tag != DW_TAG_member) | |
2859 | return name; | |
2860 | ||
2861 | prefix = determine_prefix (die, cu); | |
2862 | if (*prefix != '\0') | |
2863 | name = typename_concat (&cu->objfile->objfile_obstack, prefix, | |
2864 | name, cu); | |
2865 | ||
2866 | return name; | |
2867 | } | |
2868 | ||
5fb290d7 | 2869 | static void |
e142c38c | 2870 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2871 | { |
e142c38c | 2872 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2873 | } |
2874 | ||
cb1df416 DJ |
2875 | static void |
2876 | free_cu_line_header (void *arg) | |
2877 | { | |
2878 | struct dwarf2_cu *cu = arg; | |
2879 | ||
2880 | free_line_header (cu->line_header); | |
2881 | cu->line_header = NULL; | |
2882 | } | |
2883 | ||
c906108c | 2884 | static void |
e7c27a73 | 2885 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2886 | { |
e7c27a73 DJ |
2887 | struct objfile *objfile = cu->objfile; |
2888 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2889 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2890 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2891 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2892 | struct attribute *attr; | |
e1024ff1 | 2893 | char *name = NULL; |
c906108c SS |
2894 | char *comp_dir = NULL; |
2895 | struct die_info *child_die; | |
2896 | bfd *abfd = objfile->obfd; | |
debd256d | 2897 | struct line_header *line_header = 0; |
e142c38c DJ |
2898 | CORE_ADDR baseaddr; |
2899 | ||
2900 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2901 | |
fae299cd | 2902 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2903 | |
2904 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2905 | from finish_block. */ | |
2acceee2 | 2906 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2907 | lowpc = highpc; |
2908 | lowpc += baseaddr; | |
2909 | highpc += baseaddr; | |
2910 | ||
39cbfefa DJ |
2911 | /* Find the filename. Do not use dwarf2_name here, since the filename |
2912 | is not a source language identifier. */ | |
e142c38c | 2913 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2914 | if (attr) |
2915 | { | |
2916 | name = DW_STRING (attr); | |
2917 | } | |
e1024ff1 | 2918 | |
e142c38c | 2919 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 2920 | if (attr) |
e1024ff1 DJ |
2921 | comp_dir = DW_STRING (attr); |
2922 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 2923 | { |
e1024ff1 DJ |
2924 | comp_dir = ldirname (name); |
2925 | if (comp_dir != NULL) | |
2926 | make_cleanup (xfree, comp_dir); | |
2927 | } | |
2928 | if (comp_dir != NULL) | |
2929 | { | |
2930 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2931 | directory, get rid of it. */ | |
2932 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 2933 | |
e1024ff1 DJ |
2934 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
2935 | comp_dir = cp + 1; | |
c906108c SS |
2936 | } |
2937 | ||
e1024ff1 DJ |
2938 | if (name == NULL) |
2939 | name = "<unknown>"; | |
2940 | ||
e142c38c | 2941 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2942 | if (attr) |
2943 | { | |
e142c38c | 2944 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2945 | } |
2946 | ||
b0f35d58 DL |
2947 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2948 | if (attr) | |
2949 | cu->producer = DW_STRING (attr); | |
303b6f5d | 2950 | |
c906108c SS |
2951 | /* We assume that we're processing GCC output. */ |
2952 | processing_gcc_compilation = 2; | |
c906108c | 2953 | |
df8a16a1 DJ |
2954 | processing_has_namespace_info = 0; |
2955 | ||
c906108c SS |
2956 | start_symtab (name, comp_dir, lowpc); |
2957 | record_debugformat ("DWARF 2"); | |
303b6f5d | 2958 | record_producer (cu->producer); |
c906108c | 2959 | |
e142c38c | 2960 | initialize_cu_func_list (cu); |
c906108c | 2961 | |
cb1df416 DJ |
2962 | /* Decode line number information if present. We do this before |
2963 | processing child DIEs, so that the line header table is available | |
2964 | for DW_AT_decl_file. */ | |
e142c38c | 2965 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2966 | if (attr) |
2967 | { | |
debd256d | 2968 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2969 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2970 | if (line_header) |
2971 | { | |
cb1df416 DJ |
2972 | cu->line_header = line_header; |
2973 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 2974 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2975 | } |
5fb290d7 | 2976 | } |
debd256d | 2977 | |
cb1df416 DJ |
2978 | /* Process all dies in compilation unit. */ |
2979 | if (die->child != NULL) | |
2980 | { | |
2981 | child_die = die->child; | |
2982 | while (child_die && child_die->tag) | |
2983 | { | |
2984 | process_die (child_die, cu); | |
2985 | child_die = sibling_die (child_die); | |
2986 | } | |
2987 | } | |
2988 | ||
2e276125 JB |
2989 | /* Decode macro information, if present. Dwarf 2 macro information |
2990 | refers to information in the line number info statement program | |
2991 | header, so we can only read it if we've read the header | |
2992 | successfully. */ | |
e142c38c | 2993 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2994 | if (attr && line_header) |
2e276125 JB |
2995 | { |
2996 | unsigned int macro_offset = DW_UNSND (attr); | |
2997 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2998 | comp_dir, abfd, cu); |
2e276125 | 2999 | } |
debd256d | 3000 | do_cleanups (back_to); |
5fb290d7 DJ |
3001 | } |
3002 | ||
3003 | static void | |
e142c38c DJ |
3004 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
3005 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
3006 | { |
3007 | struct function_range *thisfn; | |
3008 | ||
3009 | thisfn = (struct function_range *) | |
7b5a2f43 | 3010 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
3011 | thisfn->name = name; |
3012 | thisfn->lowpc = lowpc; | |
3013 | thisfn->highpc = highpc; | |
3014 | thisfn->seen_line = 0; | |
3015 | thisfn->next = NULL; | |
3016 | ||
e142c38c DJ |
3017 | if (cu->last_fn == NULL) |
3018 | cu->first_fn = thisfn; | |
5fb290d7 | 3019 | else |
e142c38c | 3020 | cu->last_fn->next = thisfn; |
5fb290d7 | 3021 | |
e142c38c | 3022 | cu->last_fn = thisfn; |
c906108c SS |
3023 | } |
3024 | ||
3025 | static void | |
e7c27a73 | 3026 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3027 | { |
e7c27a73 | 3028 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3029 | struct context_stack *new; |
c906108c SS |
3030 | CORE_ADDR lowpc; |
3031 | CORE_ADDR highpc; | |
3032 | struct die_info *child_die; | |
3033 | struct attribute *attr; | |
3034 | char *name; | |
e142c38c | 3035 | CORE_ADDR baseaddr; |
801e3a5b | 3036 | struct block *block; |
c906108c | 3037 | |
e142c38c DJ |
3038 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
3039 | ||
3040 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
3041 | |
3042 | /* Ignore functions with missing or empty names and functions with | |
3043 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 3044 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3045 | return; |
3046 | ||
3047 | lowpc += baseaddr; | |
3048 | highpc += baseaddr; | |
3049 | ||
5fb290d7 | 3050 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 3051 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 3052 | |
c906108c | 3053 | new = push_context (0, lowpc); |
f792889a | 3054 | new->name = new_symbol (die, read_type_die (die, cu), cu); |
4c2df51b | 3055 | |
4cecd739 DJ |
3056 | /* If there is a location expression for DW_AT_frame_base, record |
3057 | it. */ | |
e142c38c | 3058 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 3059 | if (attr) |
c034e007 AC |
3060 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
3061 | expression is being recorded directly in the function's symbol | |
3062 | and not in a separate frame-base object. I guess this hack is | |
3063 | to avoid adding some sort of frame-base adjunct/annex to the | |
3064 | function's symbol :-(. The problem with doing this is that it | |
3065 | results in a function symbol with a location expression that | |
3066 | has nothing to do with the location of the function, ouch! The | |
3067 | relationship should be: a function's symbol has-a frame base; a | |
3068 | frame-base has-a location expression. */ | |
e7c27a73 | 3069 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 3070 | |
e142c38c | 3071 | cu->list_in_scope = &local_symbols; |
c906108c | 3072 | |
639d11d3 | 3073 | if (die->child != NULL) |
c906108c | 3074 | { |
639d11d3 | 3075 | child_die = die->child; |
c906108c SS |
3076 | while (child_die && child_die->tag) |
3077 | { | |
e7c27a73 | 3078 | process_die (child_die, cu); |
c906108c SS |
3079 | child_die = sibling_die (child_die); |
3080 | } | |
3081 | } | |
3082 | ||
3083 | new = pop_context (); | |
3084 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3085 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3086 | lowpc, highpc, objfile); | |
3087 | ||
df8a16a1 DJ |
3088 | /* For C++, set the block's scope. */ |
3089 | if (cu->language == language_cplus) | |
3090 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, | |
0114d602 | 3091 | determine_prefix (die, cu), |
df8a16a1 DJ |
3092 | processing_has_namespace_info); |
3093 | ||
801e3a5b JB |
3094 | /* If we have address ranges, record them. */ |
3095 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
3096 | |
3097 | /* In C++, we can have functions nested inside functions (e.g., when | |
3098 | a function declares a class that has methods). This means that | |
3099 | when we finish processing a function scope, we may need to go | |
3100 | back to building a containing block's symbol lists. */ | |
3101 | local_symbols = new->locals; | |
3102 | param_symbols = new->params; | |
3103 | ||
921e78cf JB |
3104 | /* If we've finished processing a top-level function, subsequent |
3105 | symbols go in the file symbol list. */ | |
3106 | if (outermost_context_p ()) | |
e142c38c | 3107 | cu->list_in_scope = &file_symbols; |
c906108c SS |
3108 | } |
3109 | ||
3110 | /* Process all the DIES contained within a lexical block scope. Start | |
3111 | a new scope, process the dies, and then close the scope. */ | |
3112 | ||
3113 | static void | |
e7c27a73 | 3114 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3115 | { |
e7c27a73 | 3116 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3117 | struct context_stack *new; |
c906108c SS |
3118 | CORE_ADDR lowpc, highpc; |
3119 | struct die_info *child_die; | |
e142c38c DJ |
3120 | CORE_ADDR baseaddr; |
3121 | ||
3122 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3123 | |
3124 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3125 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3126 | as multiple lexical blocks? Handling children in a sane way would | |
3127 | be nasty. Might be easier to properly extend generic blocks to | |
3128 | describe ranges. */ | |
e7c27a73 | 3129 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3130 | return; |
3131 | lowpc += baseaddr; | |
3132 | highpc += baseaddr; | |
3133 | ||
3134 | push_context (0, lowpc); | |
639d11d3 | 3135 | if (die->child != NULL) |
c906108c | 3136 | { |
639d11d3 | 3137 | child_die = die->child; |
c906108c SS |
3138 | while (child_die && child_die->tag) |
3139 | { | |
e7c27a73 | 3140 | process_die (child_die, cu); |
c906108c SS |
3141 | child_die = sibling_die (child_die); |
3142 | } | |
3143 | } | |
3144 | new = pop_context (); | |
3145 | ||
3146 | if (local_symbols != NULL) | |
3147 | { | |
801e3a5b JB |
3148 | struct block *block |
3149 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3150 | highpc, objfile); | |
3151 | ||
3152 | /* Note that recording ranges after traversing children, as we | |
3153 | do here, means that recording a parent's ranges entails | |
3154 | walking across all its children's ranges as they appear in | |
3155 | the address map, which is quadratic behavior. | |
3156 | ||
3157 | It would be nicer to record the parent's ranges before | |
3158 | traversing its children, simply overriding whatever you find | |
3159 | there. But since we don't even decide whether to create a | |
3160 | block until after we've traversed its children, that's hard | |
3161 | to do. */ | |
3162 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
3163 | } |
3164 | local_symbols = new->locals; | |
3165 | } | |
3166 | ||
43039443 | 3167 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
3168 | Return 1 if the attributes are present and valid, otherwise, return 0. |
3169 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
3170 | |
3171 | static int | |
3172 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
3173 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
3174 | struct partial_symtab *ranges_pst) | |
43039443 JK |
3175 | { |
3176 | struct objfile *objfile = cu->objfile; | |
3177 | struct comp_unit_head *cu_header = &cu->header; | |
3178 | bfd *obfd = objfile->obfd; | |
3179 | unsigned int addr_size = cu_header->addr_size; | |
3180 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3181 | /* Base address selection entry. */ | |
3182 | CORE_ADDR base; | |
3183 | int found_base; | |
3184 | unsigned int dummy; | |
3185 | gdb_byte *buffer; | |
3186 | CORE_ADDR marker; | |
3187 | int low_set; | |
3188 | CORE_ADDR low = 0; | |
3189 | CORE_ADDR high = 0; | |
ff013f42 | 3190 | CORE_ADDR baseaddr; |
43039443 | 3191 | |
d00adf39 DE |
3192 | found_base = cu->base_known; |
3193 | base = cu->base_address; | |
43039443 JK |
3194 | |
3195 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3196 | { | |
3197 | complaint (&symfile_complaints, | |
3198 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
3199 | offset); | |
3200 | return 0; | |
3201 | } | |
3202 | buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3203 | ||
3204 | /* Read in the largest possible address. */ | |
3205 | marker = read_address (obfd, buffer, cu, &dummy); | |
3206 | if ((marker & mask) == mask) | |
3207 | { | |
3208 | /* If we found the largest possible address, then | |
3209 | read the base address. */ | |
3210 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3211 | buffer += 2 * addr_size; | |
3212 | offset += 2 * addr_size; | |
3213 | found_base = 1; | |
3214 | } | |
3215 | ||
3216 | low_set = 0; | |
3217 | ||
e7030f15 | 3218 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 3219 | |
43039443 JK |
3220 | while (1) |
3221 | { | |
3222 | CORE_ADDR range_beginning, range_end; | |
3223 | ||
3224 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
3225 | buffer += addr_size; | |
3226 | range_end = read_address (obfd, buffer, cu, &dummy); | |
3227 | buffer += addr_size; | |
3228 | offset += 2 * addr_size; | |
3229 | ||
3230 | /* An end of list marker is a pair of zero addresses. */ | |
3231 | if (range_beginning == 0 && range_end == 0) | |
3232 | /* Found the end of list entry. */ | |
3233 | break; | |
3234 | ||
3235 | /* Each base address selection entry is a pair of 2 values. | |
3236 | The first is the largest possible address, the second is | |
3237 | the base address. Check for a base address here. */ | |
3238 | if ((range_beginning & mask) == mask) | |
3239 | { | |
3240 | /* If we found the largest possible address, then | |
3241 | read the base address. */ | |
3242 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3243 | found_base = 1; | |
3244 | continue; | |
3245 | } | |
3246 | ||
3247 | if (!found_base) | |
3248 | { | |
3249 | /* We have no valid base address for the ranges | |
3250 | data. */ | |
3251 | complaint (&symfile_complaints, | |
3252 | _("Invalid .debug_ranges data (no base address)")); | |
3253 | return 0; | |
3254 | } | |
3255 | ||
3256 | range_beginning += base; | |
3257 | range_end += base; | |
3258 | ||
ff013f42 JK |
3259 | if (ranges_pst != NULL && range_beginning < range_end) |
3260 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3261 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
3262 | ranges_pst); | |
3263 | ||
43039443 JK |
3264 | /* FIXME: This is recording everything as a low-high |
3265 | segment of consecutive addresses. We should have a | |
3266 | data structure for discontiguous block ranges | |
3267 | instead. */ | |
3268 | if (! low_set) | |
3269 | { | |
3270 | low = range_beginning; | |
3271 | high = range_end; | |
3272 | low_set = 1; | |
3273 | } | |
3274 | else | |
3275 | { | |
3276 | if (range_beginning < low) | |
3277 | low = range_beginning; | |
3278 | if (range_end > high) | |
3279 | high = range_end; | |
3280 | } | |
3281 | } | |
3282 | ||
3283 | if (! low_set) | |
3284 | /* If the first entry is an end-of-list marker, the range | |
3285 | describes an empty scope, i.e. no instructions. */ | |
3286 | return 0; | |
3287 | ||
3288 | if (low_return) | |
3289 | *low_return = low; | |
3290 | if (high_return) | |
3291 | *high_return = high; | |
3292 | return 1; | |
3293 | } | |
3294 | ||
af34e669 DJ |
3295 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3296 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3297 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3298 | static int |
af34e669 | 3299 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3300 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c SS |
3301 | { |
3302 | struct attribute *attr; | |
af34e669 DJ |
3303 | CORE_ADDR low = 0; |
3304 | CORE_ADDR high = 0; | |
3305 | int ret = 0; | |
c906108c | 3306 | |
e142c38c | 3307 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3308 | if (attr) |
af34e669 DJ |
3309 | { |
3310 | high = DW_ADDR (attr); | |
e142c38c | 3311 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3312 | if (attr) |
3313 | low = DW_ADDR (attr); | |
3314 | else | |
3315 | /* Found high w/o low attribute. */ | |
3316 | return 0; | |
3317 | ||
3318 | /* Found consecutive range of addresses. */ | |
3319 | ret = 1; | |
3320 | } | |
c906108c | 3321 | else |
af34e669 | 3322 | { |
e142c38c | 3323 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3324 | if (attr != NULL) |
3325 | { | |
af34e669 | 3326 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 3327 | .debug_ranges section. */ |
ff013f42 | 3328 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, NULL)) |
af34e669 | 3329 | return 0; |
43039443 | 3330 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
3331 | ret = -1; |
3332 | } | |
3333 | } | |
c906108c SS |
3334 | |
3335 | if (high < low) | |
3336 | return 0; | |
3337 | ||
3338 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3339 | eliminate duplicate copies of functions and vtables and such. | |
3340 | The linker will arbitrarily choose one and discard the others. | |
3341 | The AT_*_pc values for such functions refer to local labels in | |
3342 | these sections. If the section from that file was discarded, the | |
3343 | labels are not in the output, so the relocs get a value of 0. | |
3344 | If this is a discarded function, mark the pc bounds as invalid, | |
3345 | so that GDB will ignore it. */ | |
72dca2f5 | 3346 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3347 | return 0; |
3348 | ||
3349 | *lowpc = low; | |
3350 | *highpc = high; | |
af34e669 | 3351 | return ret; |
c906108c SS |
3352 | } |
3353 | ||
b084d499 JB |
3354 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
3355 | its low and high PC addresses. Do nothing if these addresses could not | |
3356 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
3357 | and HIGHPC to the high address if greater than HIGHPC. */ | |
3358 | ||
3359 | static void | |
3360 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
3361 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3362 | struct dwarf2_cu *cu) | |
3363 | { | |
3364 | CORE_ADDR low, high; | |
3365 | struct die_info *child = die->child; | |
3366 | ||
3367 | if (dwarf2_get_pc_bounds (die, &low, &high, cu)) | |
3368 | { | |
3369 | *lowpc = min (*lowpc, low); | |
3370 | *highpc = max (*highpc, high); | |
3371 | } | |
3372 | ||
3373 | /* If the language does not allow nested subprograms (either inside | |
3374 | subprograms or lexical blocks), we're done. */ | |
3375 | if (cu->language != language_ada) | |
3376 | return; | |
3377 | ||
3378 | /* Check all the children of the given DIE. If it contains nested | |
3379 | subprograms, then check their pc bounds. Likewise, we need to | |
3380 | check lexical blocks as well, as they may also contain subprogram | |
3381 | definitions. */ | |
3382 | while (child && child->tag) | |
3383 | { | |
3384 | if (child->tag == DW_TAG_subprogram | |
3385 | || child->tag == DW_TAG_lexical_block) | |
3386 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
3387 | child = sibling_die (child); | |
3388 | } | |
3389 | } | |
3390 | ||
fae299cd DC |
3391 | /* Get the low and high pc's represented by the scope DIE, and store |
3392 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3393 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3394 | ||
3395 | static void | |
3396 | get_scope_pc_bounds (struct die_info *die, | |
3397 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3398 | struct dwarf2_cu *cu) | |
3399 | { | |
3400 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3401 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3402 | CORE_ADDR current_low, current_high; | |
3403 | ||
3404 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3405 | { | |
3406 | best_low = current_low; | |
3407 | best_high = current_high; | |
3408 | } | |
3409 | else | |
3410 | { | |
3411 | struct die_info *child = die->child; | |
3412 | ||
3413 | while (child && child->tag) | |
3414 | { | |
3415 | switch (child->tag) { | |
3416 | case DW_TAG_subprogram: | |
b084d499 | 3417 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
3418 | break; |
3419 | case DW_TAG_namespace: | |
3420 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3421 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3422 | that current GCC's always emit the DIEs corresponding | |
3423 | to definitions of methods of classes as children of a | |
3424 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3425 | the DIEs giving the declarations, which could be | |
3426 | anywhere). But I don't see any reason why the | |
3427 | standards says that they have to be there. */ | |
3428 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3429 | ||
3430 | if (current_low != ((CORE_ADDR) -1)) | |
3431 | { | |
3432 | best_low = min (best_low, current_low); | |
3433 | best_high = max (best_high, current_high); | |
3434 | } | |
3435 | break; | |
3436 | default: | |
3437 | /* Ignore. */ | |
3438 | break; | |
3439 | } | |
3440 | ||
3441 | child = sibling_die (child); | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | *lowpc = best_low; | |
3446 | *highpc = best_high; | |
3447 | } | |
3448 | ||
801e3a5b JB |
3449 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
3450 | in DIE. */ | |
3451 | static void | |
3452 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
3453 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
3454 | { | |
3455 | struct attribute *attr; | |
3456 | ||
3457 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
3458 | if (attr) | |
3459 | { | |
3460 | CORE_ADDR high = DW_ADDR (attr); | |
3461 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3462 | if (attr) | |
3463 | { | |
3464 | CORE_ADDR low = DW_ADDR (attr); | |
3465 | record_block_range (block, baseaddr + low, baseaddr + high - 1); | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
3470 | if (attr) | |
3471 | { | |
3472 | bfd *obfd = cu->objfile->obfd; | |
3473 | ||
3474 | /* The value of the DW_AT_ranges attribute is the offset of the | |
3475 | address range list in the .debug_ranges section. */ | |
3476 | unsigned long offset = DW_UNSND (attr); | |
3477 | gdb_byte *buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3478 | ||
3479 | /* For some target architectures, but not others, the | |
3480 | read_address function sign-extends the addresses it returns. | |
3481 | To recognize base address selection entries, we need a | |
3482 | mask. */ | |
3483 | unsigned int addr_size = cu->header.addr_size; | |
3484 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3485 | ||
3486 | /* The base address, to which the next pair is relative. Note | |
3487 | that this 'base' is a DWARF concept: most entries in a range | |
3488 | list are relative, to reduce the number of relocs against the | |
3489 | debugging information. This is separate from this function's | |
3490 | 'baseaddr' argument, which GDB uses to relocate debugging | |
3491 | information from a shared library based on the address at | |
3492 | which the library was loaded. */ | |
d00adf39 DE |
3493 | CORE_ADDR base = cu->base_address; |
3494 | int base_known = cu->base_known; | |
801e3a5b JB |
3495 | |
3496 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3497 | { | |
3498 | complaint (&symfile_complaints, | |
3499 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
3500 | offset); | |
3501 | return; | |
3502 | } | |
3503 | ||
3504 | for (;;) | |
3505 | { | |
3506 | unsigned int bytes_read; | |
3507 | CORE_ADDR start, end; | |
3508 | ||
3509 | start = read_address (obfd, buffer, cu, &bytes_read); | |
3510 | buffer += bytes_read; | |
3511 | end = read_address (obfd, buffer, cu, &bytes_read); | |
3512 | buffer += bytes_read; | |
3513 | ||
3514 | /* Did we find the end of the range list? */ | |
3515 | if (start == 0 && end == 0) | |
3516 | break; | |
3517 | ||
3518 | /* Did we find a base address selection entry? */ | |
3519 | else if ((start & base_select_mask) == base_select_mask) | |
3520 | { | |
3521 | base = end; | |
3522 | base_known = 1; | |
3523 | } | |
3524 | ||
3525 | /* We found an ordinary address range. */ | |
3526 | else | |
3527 | { | |
3528 | if (!base_known) | |
3529 | { | |
3530 | complaint (&symfile_complaints, | |
3531 | _("Invalid .debug_ranges data (no base address)")); | |
3532 | return; | |
3533 | } | |
3534 | ||
3535 | record_block_range (block, | |
3536 | baseaddr + base + start, | |
3537 | baseaddr + base + end - 1); | |
3538 | } | |
3539 | } | |
3540 | } | |
3541 | } | |
3542 | ||
c906108c SS |
3543 | /* Add an aggregate field to the field list. */ |
3544 | ||
3545 | static void | |
107d2387 | 3546 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3547 | struct dwarf2_cu *cu) |
3548 | { | |
3549 | struct objfile *objfile = cu->objfile; | |
5e2b427d | 3550 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
3551 | struct nextfield *new_field; |
3552 | struct attribute *attr; | |
3553 | struct field *fp; | |
3554 | char *fieldname = ""; | |
3555 | ||
3556 | /* Allocate a new field list entry and link it in. */ | |
3557 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3558 | make_cleanup (xfree, new_field); |
c906108c SS |
3559 | memset (new_field, 0, sizeof (struct nextfield)); |
3560 | new_field->next = fip->fields; | |
3561 | fip->fields = new_field; | |
3562 | fip->nfields++; | |
3563 | ||
3564 | /* Handle accessibility and virtuality of field. | |
3565 | The default accessibility for members is public, the default | |
3566 | accessibility for inheritance is private. */ | |
3567 | if (die->tag != DW_TAG_inheritance) | |
3568 | new_field->accessibility = DW_ACCESS_public; | |
3569 | else | |
3570 | new_field->accessibility = DW_ACCESS_private; | |
3571 | new_field->virtuality = DW_VIRTUALITY_none; | |
3572 | ||
e142c38c | 3573 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3574 | if (attr) |
3575 | new_field->accessibility = DW_UNSND (attr); | |
3576 | if (new_field->accessibility != DW_ACCESS_public) | |
3577 | fip->non_public_fields = 1; | |
e142c38c | 3578 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3579 | if (attr) |
3580 | new_field->virtuality = DW_UNSND (attr); | |
3581 | ||
3582 | fp = &new_field->field; | |
a9a9bd0f | 3583 | |
e142c38c | 3584 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3585 | { |
a9a9bd0f DC |
3586 | /* Data member other than a C++ static data member. */ |
3587 | ||
c906108c | 3588 | /* Get type of field. */ |
e7c27a73 | 3589 | fp->type = die_type (die, cu); |
c906108c | 3590 | |
d6a843b5 | 3591 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 3592 | |
c906108c | 3593 | /* Get bit size of field (zero if none). */ |
e142c38c | 3594 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3595 | if (attr) |
3596 | { | |
3597 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | FIELD_BITSIZE (*fp) = 0; | |
3602 | } | |
3603 | ||
3604 | /* Get bit offset of field. */ | |
e142c38c | 3605 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3606 | if (attr) |
3607 | { | |
c6a0999f JB |
3608 | int byte_offset; |
3609 | ||
3690dd37 JB |
3610 | if (attr_form_is_section_offset (attr)) |
3611 | { | |
3612 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 3613 | byte_offset = 0; |
3690dd37 JB |
3614 | } |
3615 | else if (attr_form_is_constant (attr)) | |
c6a0999f | 3616 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
3690dd37 | 3617 | else |
c6a0999f JB |
3618 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
3619 | ||
d6a843b5 | 3620 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 3621 | } |
e142c38c | 3622 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3623 | if (attr) |
3624 | { | |
5e2b427d | 3625 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
3626 | { |
3627 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3628 | additional bit offset from the MSB of the containing |
3629 | anonymous object to the MSB of the field. We don't | |
3630 | have to do anything special since we don't need to | |
3631 | know the size of the anonymous object. */ | |
c906108c SS |
3632 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3633 | } | |
3634 | else | |
3635 | { | |
3636 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3637 | MSB of the anonymous object, subtract off the number of |
3638 | bits from the MSB of the field to the MSB of the | |
3639 | object, and then subtract off the number of bits of | |
3640 | the field itself. The result is the bit offset of | |
3641 | the LSB of the field. */ | |
c906108c SS |
3642 | int anonymous_size; |
3643 | int bit_offset = DW_UNSND (attr); | |
3644 | ||
e142c38c | 3645 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3646 | if (attr) |
3647 | { | |
3648 | /* The size of the anonymous object containing | |
3649 | the bit field is explicit, so use the | |
3650 | indicated size (in bytes). */ | |
3651 | anonymous_size = DW_UNSND (attr); | |
3652 | } | |
3653 | else | |
3654 | { | |
3655 | /* The size of the anonymous object containing | |
3656 | the bit field must be inferred from the type | |
3657 | attribute of the data member containing the | |
3658 | bit field. */ | |
3659 | anonymous_size = TYPE_LENGTH (fp->type); | |
3660 | } | |
3661 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3662 | - bit_offset - FIELD_BITSIZE (*fp); | |
3663 | } | |
3664 | } | |
3665 | ||
3666 | /* Get name of field. */ | |
39cbfefa DJ |
3667 | fieldname = dwarf2_name (die, cu); |
3668 | if (fieldname == NULL) | |
3669 | fieldname = ""; | |
d8151005 DJ |
3670 | |
3671 | /* The name is already allocated along with this objfile, so we don't | |
3672 | need to duplicate it for the type. */ | |
3673 | fp->name = fieldname; | |
c906108c SS |
3674 | |
3675 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3676 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3677 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3678 | { |
3679 | new_field->accessibility = DW_ACCESS_private; | |
3680 | fip->non_public_fields = 1; | |
3681 | } | |
3682 | } | |
a9a9bd0f | 3683 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3684 | { |
a9a9bd0f DC |
3685 | /* C++ static member. */ |
3686 | ||
3687 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3688 | is a declaration, but all versions of G++ as of this writing | |
3689 | (so through at least 3.2.1) incorrectly generate | |
3690 | DW_TAG_variable tags. */ | |
3691 | ||
c906108c | 3692 | char *physname; |
c906108c | 3693 | |
a9a9bd0f | 3694 | /* Get name of field. */ |
39cbfefa DJ |
3695 | fieldname = dwarf2_name (die, cu); |
3696 | if (fieldname == NULL) | |
c906108c SS |
3697 | return; |
3698 | ||
2df3850c | 3699 | /* Get physical name. */ |
e142c38c | 3700 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3701 | |
d8151005 DJ |
3702 | /* The name is already allocated along with this objfile, so we don't |
3703 | need to duplicate it for the type. */ | |
3704 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3705 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3706 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3707 | } |
3708 | else if (die->tag == DW_TAG_inheritance) | |
3709 | { | |
3710 | /* C++ base class field. */ | |
e142c38c | 3711 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3712 | if (attr) |
d6a843b5 JK |
3713 | SET_FIELD_BITPOS (*fp, decode_locdesc (DW_BLOCK (attr), cu) |
3714 | * bits_per_byte); | |
c906108c | 3715 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 3716 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3717 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3718 | fip->nbaseclasses++; | |
3719 | } | |
3720 | } | |
3721 | ||
3722 | /* Create the vector of fields, and attach it to the type. */ | |
3723 | ||
3724 | static void | |
fba45db2 | 3725 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3726 | struct dwarf2_cu *cu) |
c906108c SS |
3727 | { |
3728 | int nfields = fip->nfields; | |
3729 | ||
3730 | /* Record the field count, allocate space for the array of fields, | |
3731 | and create blank accessibility bitfields if necessary. */ | |
3732 | TYPE_NFIELDS (type) = nfields; | |
3733 | TYPE_FIELDS (type) = (struct field *) | |
3734 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3735 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3736 | ||
3737 | if (fip->non_public_fields) | |
3738 | { | |
3739 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3740 | ||
3741 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3742 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3743 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3744 | ||
3745 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3746 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3747 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3748 | ||
3749 | TYPE_FIELD_IGNORE_BITS (type) = | |
3750 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3751 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3752 | } | |
3753 | ||
3754 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3755 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3756 | if (fip->nbaseclasses) | |
3757 | { | |
3758 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3759 | unsigned char *pointer; |
c906108c SS |
3760 | |
3761 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3762 | pointer = TYPE_ALLOC (type, num_bytes); |
3763 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3764 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3765 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3766 | } | |
3767 | ||
3768 | /* Copy the saved-up fields into the field vector. Start from the head | |
3769 | of the list, adding to the tail of the field array, so that they end | |
3770 | up in the same order in the array in which they were added to the list. */ | |
3771 | while (nfields-- > 0) | |
3772 | { | |
3773 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3774 | switch (fip->fields->accessibility) | |
3775 | { | |
c5aa993b JM |
3776 | case DW_ACCESS_private: |
3777 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3778 | break; | |
c906108c | 3779 | |
c5aa993b JM |
3780 | case DW_ACCESS_protected: |
3781 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3782 | break; | |
c906108c | 3783 | |
c5aa993b JM |
3784 | case DW_ACCESS_public: |
3785 | break; | |
c906108c | 3786 | |
c5aa993b JM |
3787 | default: |
3788 | /* Unknown accessibility. Complain and treat it as public. */ | |
3789 | { | |
e2e0b3e5 | 3790 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3791 | fip->fields->accessibility); |
c5aa993b JM |
3792 | } |
3793 | break; | |
c906108c SS |
3794 | } |
3795 | if (nfields < fip->nbaseclasses) | |
3796 | { | |
3797 | switch (fip->fields->virtuality) | |
3798 | { | |
c5aa993b JM |
3799 | case DW_VIRTUALITY_virtual: |
3800 | case DW_VIRTUALITY_pure_virtual: | |
3801 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3802 | break; | |
c906108c SS |
3803 | } |
3804 | } | |
3805 | fip->fields = fip->fields->next; | |
3806 | } | |
3807 | } | |
3808 | ||
c906108c SS |
3809 | /* Add a member function to the proper fieldlist. */ |
3810 | ||
3811 | static void | |
107d2387 | 3812 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3813 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3814 | { |
e7c27a73 | 3815 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3816 | struct attribute *attr; |
3817 | struct fnfieldlist *flp; | |
3818 | int i; | |
3819 | struct fn_field *fnp; | |
3820 | char *fieldname; | |
3821 | char *physname; | |
3822 | struct nextfnfield *new_fnfield; | |
f792889a | 3823 | struct type *this_type; |
c906108c | 3824 | |
2df3850c | 3825 | /* Get name of member function. */ |
39cbfefa DJ |
3826 | fieldname = dwarf2_name (die, cu); |
3827 | if (fieldname == NULL) | |
2df3850c | 3828 | return; |
c906108c | 3829 | |
2df3850c | 3830 | /* Get the mangled name. */ |
e142c38c | 3831 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3832 | |
3833 | /* Look up member function name in fieldlist. */ | |
3834 | for (i = 0; i < fip->nfnfields; i++) | |
3835 | { | |
27bfe10e | 3836 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3837 | break; |
3838 | } | |
3839 | ||
3840 | /* Create new list element if necessary. */ | |
3841 | if (i < fip->nfnfields) | |
3842 | flp = &fip->fnfieldlists[i]; | |
3843 | else | |
3844 | { | |
3845 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3846 | { | |
3847 | fip->fnfieldlists = (struct fnfieldlist *) | |
3848 | xrealloc (fip->fnfieldlists, | |
3849 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3850 | * sizeof (struct fnfieldlist)); |
c906108c | 3851 | if (fip->nfnfields == 0) |
c13c43fd | 3852 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3853 | } |
3854 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3855 | flp->name = fieldname; | |
3856 | flp->length = 0; | |
3857 | flp->head = NULL; | |
3858 | fip->nfnfields++; | |
3859 | } | |
3860 | ||
3861 | /* Create a new member function field and chain it to the field list | |
3862 | entry. */ | |
3863 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3864 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3865 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3866 | new_fnfield->next = flp->head; | |
3867 | flp->head = new_fnfield; | |
3868 | flp->length++; | |
3869 | ||
3870 | /* Fill in the member function field info. */ | |
3871 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3872 | /* The name is already allocated along with this objfile, so we don't |
3873 | need to duplicate it for the type. */ | |
3874 | fnp->physname = physname ? physname : ""; | |
c906108c | 3875 | fnp->type = alloc_type (objfile); |
f792889a DJ |
3876 | this_type = read_type_die (die, cu); |
3877 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 3878 | { |
f792889a | 3879 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 3880 | |
f792889a | 3881 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
3882 | of the method itself (TYPE_CODE_METHOD). */ |
3883 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
3884 | TYPE_TARGET_TYPE (this_type), |
3885 | TYPE_FIELDS (this_type), | |
3886 | TYPE_NFIELDS (this_type), | |
3887 | TYPE_VARARGS (this_type)); | |
c906108c SS |
3888 | |
3889 | /* Handle static member functions. | |
c5aa993b JM |
3890 | Dwarf2 has no clean way to discern C++ static and non-static |
3891 | member functions. G++ helps GDB by marking the first | |
3892 | parameter for non-static member functions (which is the | |
3893 | this pointer) as artificial. We obtain this information | |
3894 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 3895 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
3896 | fnp->voffset = VOFFSET_STATIC; |
3897 | } | |
3898 | else | |
e2e0b3e5 | 3899 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3900 | physname); |
c906108c SS |
3901 | |
3902 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3903 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3904 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3905 | |
3906 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3907 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3908 | ||
3909 | /* Get accessibility. */ | |
e142c38c | 3910 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3911 | if (attr) |
3912 | { | |
3913 | switch (DW_UNSND (attr)) | |
3914 | { | |
c5aa993b JM |
3915 | case DW_ACCESS_private: |
3916 | fnp->is_private = 1; | |
3917 | break; | |
3918 | case DW_ACCESS_protected: | |
3919 | fnp->is_protected = 1; | |
3920 | break; | |
c906108c SS |
3921 | } |
3922 | } | |
3923 | ||
b02dede2 | 3924 | /* Check for artificial methods. */ |
e142c38c | 3925 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3926 | if (attr && DW_UNSND (attr) != 0) |
3927 | fnp->is_artificial = 1; | |
3928 | ||
c906108c | 3929 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3930 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3931 | if (attr) |
8e19ed76 PS |
3932 | { |
3933 | /* Support the .debug_loc offsets */ | |
3934 | if (attr_form_is_block (attr)) | |
3935 | { | |
e7c27a73 | 3936 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 | 3937 | } |
3690dd37 | 3938 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 3939 | { |
4d3c2250 | 3940 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3941 | } |
3942 | else | |
3943 | { | |
4d3c2250 KB |
3944 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3945 | fieldname); | |
8e19ed76 PS |
3946 | } |
3947 | } | |
c906108c SS |
3948 | } |
3949 | ||
3950 | /* Create the vector of member function fields, and attach it to the type. */ | |
3951 | ||
3952 | static void | |
fba45db2 | 3953 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3954 | struct dwarf2_cu *cu) |
c906108c SS |
3955 | { |
3956 | struct fnfieldlist *flp; | |
3957 | int total_length = 0; | |
3958 | int i; | |
3959 | ||
3960 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3961 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3962 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3963 | ||
3964 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3965 | { | |
3966 | struct nextfnfield *nfp = flp->head; | |
3967 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3968 | int k; | |
3969 | ||
3970 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3971 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3972 | fn_flp->fn_fields = (struct fn_field *) | |
3973 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3974 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3975 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3976 | |
3977 | total_length += flp->length; | |
3978 | } | |
3979 | ||
3980 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3981 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3982 | } | |
3983 | ||
1168df01 JB |
3984 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
3985 | language, zero otherwise. */ | |
3986 | static int | |
3987 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3988 | { | |
3989 | static const char vptr[] = "_vptr"; | |
987504bb | 3990 | static const char vtable[] = "vtable"; |
1168df01 | 3991 | |
987504bb JJ |
3992 | /* Look for the C++ and Java forms of the vtable. */ |
3993 | if ((cu->language == language_java | |
3994 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3995 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3996 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3997 | return 1; |
3998 | ||
3999 | return 0; | |
4000 | } | |
4001 | ||
c0dd20ea DJ |
4002 | /* GCC outputs unnamed structures that are really pointers to member |
4003 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
4004 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
4005 | zero. |
4006 | ||
4007 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
4008 | This is GCC PR debug/28767. */ | |
c0dd20ea | 4009 | |
f792889a | 4010 | static struct type * |
c0dd20ea DJ |
4011 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) |
4012 | { | |
4013 | struct objfile *objfile = cu->objfile; | |
4014 | struct type *type; | |
4015 | struct die_info *pfn_die, *delta_die; | |
4016 | struct attribute *pfn_name, *delta_name; | |
4017 | struct type *pfn_type, *domain_type; | |
4018 | ||
4019 | /* Check for a structure with no name and two children. */ | |
4020 | if (die->tag != DW_TAG_structure_type | |
4021 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
4022 | || die->child == NULL | |
4023 | || die->child->sibling == NULL | |
4024 | || (die->child->sibling->sibling != NULL | |
4025 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
f792889a | 4026 | return NULL; |
c0dd20ea DJ |
4027 | |
4028 | /* Check for __pfn and __delta members. */ | |
4029 | pfn_die = die->child; | |
4030 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
4031 | if (pfn_die->tag != DW_TAG_member | |
4032 | || pfn_name == NULL | |
4033 | || DW_STRING (pfn_name) == NULL | |
4034 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
f792889a | 4035 | return NULL; |
c0dd20ea DJ |
4036 | |
4037 | delta_die = pfn_die->sibling; | |
4038 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
4039 | if (delta_die->tag != DW_TAG_member | |
4040 | || delta_name == NULL | |
4041 | || DW_STRING (delta_name) == NULL | |
4042 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
f792889a | 4043 | return NULL; |
c0dd20ea DJ |
4044 | |
4045 | /* Find the type of the method. */ | |
4046 | pfn_type = die_type (pfn_die, cu); | |
4047 | if (pfn_type == NULL | |
4048 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
4049 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
f792889a | 4050 | return NULL; |
c0dd20ea DJ |
4051 | |
4052 | /* Look for the "this" argument. */ | |
4053 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
4054 | if (TYPE_NFIELDS (pfn_type) == 0 | |
4055 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
f792889a | 4056 | return NULL; |
c0dd20ea DJ |
4057 | |
4058 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
4059 | type = alloc_type (objfile); | |
4060 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
4061 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
4062 | TYPE_VARARGS (pfn_type)); | |
0d5de010 | 4063 | type = lookup_methodptr_type (type); |
f792889a | 4064 | return set_die_type (die, type, cu); |
c0dd20ea | 4065 | } |
1168df01 | 4066 | |
c906108c SS |
4067 | /* Called when we find the DIE that starts a structure or union scope |
4068 | (definition) to process all dies that define the members of the | |
4069 | structure or union. | |
4070 | ||
4071 | NOTE: we need to call struct_type regardless of whether or not the | |
4072 | DIE has an at_name attribute, since it might be an anonymous | |
4073 | structure or union. This gets the type entered into our set of | |
4074 | user defined types. | |
4075 | ||
4076 | However, if the structure is incomplete (an opaque struct/union) | |
4077 | then suppress creating a symbol table entry for it since gdb only | |
4078 | wants to find the one with the complete definition. Note that if | |
4079 | it is complete, we just call new_symbol, which does it's own | |
4080 | checking about whether the struct/union is anonymous or not (and | |
4081 | suppresses creating a symbol table entry itself). */ | |
4082 | ||
f792889a | 4083 | static struct type * |
134d01f1 | 4084 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4085 | { |
e7c27a73 | 4086 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4087 | struct type *type; |
4088 | struct attribute *attr; | |
39cbfefa | 4089 | char *name; |
0114d602 | 4090 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c | 4091 | |
f792889a DJ |
4092 | type = quirk_gcc_member_function_pointer (die, cu); |
4093 | if (type) | |
4094 | return type; | |
c906108c | 4095 | |
c0dd20ea | 4096 | type = alloc_type (objfile); |
c906108c | 4097 | INIT_CPLUS_SPECIFIC (type); |
39cbfefa DJ |
4098 | name = dwarf2_name (die, cu); |
4099 | if (name != NULL) | |
c906108c | 4100 | { |
987504bb JJ |
4101 | if (cu->language == language_cplus |
4102 | || cu->language == language_java) | |
63d06c5c | 4103 | { |
0114d602 DJ |
4104 | const char *new_prefix = determine_class_name (die, cu); |
4105 | TYPE_TAG_NAME (type) = (char *) new_prefix; | |
63d06c5c DC |
4106 | } |
4107 | else | |
4108 | { | |
d8151005 DJ |
4109 | /* The name is already allocated along with this objfile, so |
4110 | we don't need to duplicate it for the type. */ | |
39cbfefa | 4111 | TYPE_TAG_NAME (type) = name; |
63d06c5c | 4112 | } |
c906108c SS |
4113 | } |
4114 | ||
4115 | if (die->tag == DW_TAG_structure_type) | |
4116 | { | |
4117 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
4118 | } | |
4119 | else if (die->tag == DW_TAG_union_type) | |
4120 | { | |
4121 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
4122 | } | |
4123 | else | |
4124 | { | |
4125 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 4126 | in gdbtypes.h. */ |
c906108c SS |
4127 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
4128 | } | |
4129 | ||
e142c38c | 4130 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4131 | if (attr) |
4132 | { | |
4133 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4134 | } | |
4135 | else | |
4136 | { | |
4137 | TYPE_LENGTH (type) = 0; | |
4138 | } | |
4139 | ||
876cecd0 | 4140 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 4141 | if (die_is_declaration (die, cu)) |
876cecd0 | 4142 | TYPE_STUB (type) = 1; |
dc718098 | 4143 | |
c906108c SS |
4144 | /* We need to add the type field to the die immediately so we don't |
4145 | infinitely recurse when dealing with pointers to the structure | |
4146 | type within the structure itself. */ | |
1c379e20 | 4147 | set_die_type (die, type, cu); |
c906108c | 4148 | |
e142c38c | 4149 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
4150 | { |
4151 | struct field_info fi; | |
4152 | struct die_info *child_die; | |
c906108c SS |
4153 | |
4154 | memset (&fi, 0, sizeof (struct field_info)); | |
4155 | ||
639d11d3 | 4156 | child_die = die->child; |
c906108c SS |
4157 | |
4158 | while (child_die && child_die->tag) | |
4159 | { | |
a9a9bd0f DC |
4160 | if (child_die->tag == DW_TAG_member |
4161 | || child_die->tag == DW_TAG_variable) | |
c906108c | 4162 | { |
a9a9bd0f DC |
4163 | /* NOTE: carlton/2002-11-05: A C++ static data member |
4164 | should be a DW_TAG_member that is a declaration, but | |
4165 | all versions of G++ as of this writing (so through at | |
4166 | least 3.2.1) incorrectly generate DW_TAG_variable | |
4167 | tags for them instead. */ | |
e7c27a73 | 4168 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4169 | } |
8713b1b1 | 4170 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
4171 | { |
4172 | /* C++ member function. */ | |
e7c27a73 | 4173 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
4174 | } |
4175 | else if (child_die->tag == DW_TAG_inheritance) | |
4176 | { | |
4177 | /* C++ base class field. */ | |
e7c27a73 | 4178 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4179 | } |
c906108c SS |
4180 | child_die = sibling_die (child_die); |
4181 | } | |
4182 | ||
4183 | /* Attach fields and member functions to the type. */ | |
4184 | if (fi.nfields) | |
e7c27a73 | 4185 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
4186 | if (fi.nfnfields) |
4187 | { | |
e7c27a73 | 4188 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 4189 | |
c5aa993b | 4190 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
4191 | class itself) which contains the vtable pointer for the current |
4192 | class from the DW_AT_containing_type attribute. */ | |
4193 | ||
e142c38c | 4194 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 4195 | { |
e7c27a73 | 4196 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
4197 | |
4198 | TYPE_VPTR_BASETYPE (type) = t; | |
4199 | if (type == t) | |
4200 | { | |
c906108c SS |
4201 | int i; |
4202 | ||
4203 | /* Our own class provides vtbl ptr. */ | |
4204 | for (i = TYPE_NFIELDS (t) - 1; | |
4205 | i >= TYPE_N_BASECLASSES (t); | |
4206 | --i) | |
4207 | { | |
4208 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
4209 | ||
1168df01 | 4210 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
4211 | { |
4212 | TYPE_VPTR_FIELDNO (type) = i; | |
4213 | break; | |
4214 | } | |
4215 | } | |
4216 | ||
4217 | /* Complain if virtual function table field not found. */ | |
4218 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 4219 | complaint (&symfile_complaints, |
e2e0b3e5 | 4220 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
4221 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
4222 | ""); | |
c906108c SS |
4223 | } |
4224 | else | |
4225 | { | |
4226 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
4227 | } | |
4228 | } | |
f6235d4c EZ |
4229 | else if (cu->producer |
4230 | && strncmp (cu->producer, | |
4231 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
4232 | { | |
4233 | /* The IBM XLC compiler does not provide direct indication | |
4234 | of the containing type, but the vtable pointer is | |
4235 | always named __vfp. */ | |
4236 | ||
4237 | int i; | |
4238 | ||
4239 | for (i = TYPE_NFIELDS (type) - 1; | |
4240 | i >= TYPE_N_BASECLASSES (type); | |
4241 | --i) | |
4242 | { | |
4243 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
4244 | { | |
4245 | TYPE_VPTR_FIELDNO (type) = i; | |
4246 | TYPE_VPTR_BASETYPE (type) = type; | |
4247 | break; | |
4248 | } | |
4249 | } | |
4250 | } | |
c906108c | 4251 | } |
c906108c | 4252 | } |
63d06c5c | 4253 | |
0114d602 | 4254 | do_cleanups (back_to); |
f792889a | 4255 | return type; |
c906108c SS |
4256 | } |
4257 | ||
134d01f1 DJ |
4258 | static void |
4259 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4260 | { | |
4261 | struct objfile *objfile = cu->objfile; | |
90aeadfc | 4262 | struct die_info *child_die = die->child; |
f792889a | 4263 | struct type *this_type; |
c906108c | 4264 | |
f792889a DJ |
4265 | this_type = get_die_type (die, cu); |
4266 | if (this_type == NULL) | |
4267 | this_type = read_structure_type (die, cu); | |
c906108c | 4268 | |
90aeadfc DC |
4269 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
4270 | snapshots) has been known to create a die giving a declaration | |
4271 | for a class that has, as a child, a die giving a definition for a | |
4272 | nested class. So we have to process our children even if the | |
4273 | current die is a declaration. Normally, of course, a declaration | |
4274 | won't have any children at all. */ | |
134d01f1 | 4275 | |
90aeadfc DC |
4276 | while (child_die != NULL && child_die->tag) |
4277 | { | |
4278 | if (child_die->tag == DW_TAG_member | |
4279 | || child_die->tag == DW_TAG_variable | |
4280 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4281 | { |
90aeadfc | 4282 | /* Do nothing. */ |
134d01f1 | 4283 | } |
90aeadfc DC |
4284 | else |
4285 | process_die (child_die, cu); | |
134d01f1 | 4286 | |
90aeadfc | 4287 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4288 | } |
4289 | ||
fa4028e9 JB |
4290 | /* Do not consider external references. According to the DWARF standard, |
4291 | these DIEs are identified by the fact that they have no byte_size | |
4292 | attribute, and a declaration attribute. */ | |
4293 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
4294 | || !die_is_declaration (die, cu)) | |
f792889a | 4295 | new_symbol (die, this_type, cu); |
134d01f1 DJ |
4296 | } |
4297 | ||
4298 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4299 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 4300 | |
f792889a | 4301 | static struct type * |
134d01f1 | 4302 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4303 | { |
e7c27a73 | 4304 | struct objfile *objfile = cu->objfile; |
c906108c | 4305 | struct type *type; |
c906108c | 4306 | struct attribute *attr; |
0114d602 | 4307 | const char *name; |
134d01f1 | 4308 | |
c906108c SS |
4309 | type = alloc_type (objfile); |
4310 | ||
4311 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
0114d602 | 4312 | name = dwarf2_full_name (die, cu); |
39cbfefa | 4313 | if (name != NULL) |
0114d602 | 4314 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 4315 | |
e142c38c | 4316 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4317 | if (attr) |
4318 | { | |
4319 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4320 | } | |
4321 | else | |
4322 | { | |
4323 | TYPE_LENGTH (type) = 0; | |
4324 | } | |
4325 | ||
137033e9 JB |
4326 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
4327 | declared as private in the package spec, and then defined only | |
4328 | inside the package body. Such types are known as Taft Amendment | |
4329 | Types. When another package uses such a type, an incomplete DIE | |
4330 | may be generated by the compiler. */ | |
02eb380e | 4331 | if (die_is_declaration (die, cu)) |
876cecd0 | 4332 | TYPE_STUB (type) = 1; |
02eb380e | 4333 | |
f792889a | 4334 | return set_die_type (die, type, cu); |
134d01f1 DJ |
4335 | } |
4336 | ||
8176b9b8 | 4337 | /* Determine the name of the type represented by DIE, which should be |
0114d602 DJ |
4338 | a named C++ or Java compound type. Return the name in question, |
4339 | allocated on the objfile obstack. */ | |
8176b9b8 | 4340 | |
0114d602 | 4341 | static const char * |
8176b9b8 DC |
4342 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) |
4343 | { | |
0114d602 | 4344 | const char *new_prefix = NULL; |
8176b9b8 DC |
4345 | |
4346 | /* If we don't have namespace debug info, guess the name by trying | |
4347 | to demangle the names of members, just like we did in | |
72bf9492 | 4348 | guess_structure_name. */ |
8176b9b8 DC |
4349 | if (!processing_has_namespace_info) |
4350 | { | |
4351 | struct die_info *child; | |
4352 | ||
4353 | for (child = die->child; | |
4354 | child != NULL && child->tag != 0; | |
4355 | child = sibling_die (child)) | |
4356 | { | |
4357 | if (child->tag == DW_TAG_subprogram) | |
4358 | { | |
0114d602 | 4359 | char *phys_prefix |
31c27f77 JJ |
4360 | = language_class_name_from_physname (cu->language_defn, |
4361 | dwarf2_linkage_name | |
8176b9b8 DC |
4362 | (child, cu)); |
4363 | ||
0114d602 DJ |
4364 | if (phys_prefix != NULL) |
4365 | { | |
4366 | new_prefix | |
4367 | = obsavestring (phys_prefix, strlen (phys_prefix), | |
4368 | &cu->objfile->objfile_obstack); | |
4369 | xfree (phys_prefix); | |
4370 | break; | |
4371 | } | |
8176b9b8 DC |
4372 | } |
4373 | } | |
4374 | } | |
4375 | ||
4376 | if (new_prefix == NULL) | |
0114d602 | 4377 | new_prefix = dwarf2_full_name (die, cu); |
8176b9b8 DC |
4378 | |
4379 | return new_prefix; | |
4380 | } | |
4381 | ||
134d01f1 DJ |
4382 | /* Given a pointer to a die which begins an enumeration, process all |
4383 | the dies that define the members of the enumeration, and create the | |
4384 | symbol for the enumeration type. | |
4385 | ||
4386 | NOTE: We reverse the order of the element list. */ | |
4387 | ||
4388 | static void | |
4389 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4390 | { | |
4391 | struct objfile *objfile = cu->objfile; | |
4392 | struct die_info *child_die; | |
4393 | struct field *fields; | |
134d01f1 DJ |
4394 | struct symbol *sym; |
4395 | int num_fields; | |
4396 | int unsigned_enum = 1; | |
39cbfefa | 4397 | char *name; |
f792889a | 4398 | struct type *this_type; |
134d01f1 | 4399 | |
c906108c SS |
4400 | num_fields = 0; |
4401 | fields = NULL; | |
f792889a DJ |
4402 | this_type = get_die_type (die, cu); |
4403 | if (this_type == NULL) | |
4404 | this_type = read_enumeration_type (die, cu); | |
639d11d3 | 4405 | if (die->child != NULL) |
c906108c | 4406 | { |
639d11d3 | 4407 | child_die = die->child; |
c906108c SS |
4408 | while (child_die && child_die->tag) |
4409 | { | |
4410 | if (child_die->tag != DW_TAG_enumerator) | |
4411 | { | |
e7c27a73 | 4412 | process_die (child_die, cu); |
c906108c SS |
4413 | } |
4414 | else | |
4415 | { | |
39cbfefa DJ |
4416 | name = dwarf2_name (child_die, cu); |
4417 | if (name) | |
c906108c | 4418 | { |
f792889a | 4419 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
4420 | if (SYMBOL_VALUE (sym) < 0) |
4421 | unsigned_enum = 0; | |
4422 | ||
4423 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4424 | { | |
4425 | fields = (struct field *) | |
4426 | xrealloc (fields, | |
4427 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4428 | * sizeof (struct field)); |
c906108c SS |
4429 | } |
4430 | ||
3567439c | 4431 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 4432 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 4433 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
4434 | FIELD_BITSIZE (fields[num_fields]) = 0; |
4435 | ||
4436 | num_fields++; | |
4437 | } | |
4438 | } | |
4439 | ||
4440 | child_die = sibling_die (child_die); | |
4441 | } | |
4442 | ||
4443 | if (num_fields) | |
4444 | { | |
f792889a DJ |
4445 | TYPE_NFIELDS (this_type) = num_fields; |
4446 | TYPE_FIELDS (this_type) = (struct field *) | |
4447 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
4448 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 4449 | sizeof (struct field) * num_fields); |
b8c9b27d | 4450 | xfree (fields); |
c906108c SS |
4451 | } |
4452 | if (unsigned_enum) | |
876cecd0 | 4453 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 4454 | } |
134d01f1 | 4455 | |
f792889a | 4456 | new_symbol (die, this_type, cu); |
c906108c SS |
4457 | } |
4458 | ||
4459 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4460 | the DIE's type field. For now, this only handles one dimensional | |
4461 | arrays. */ | |
4462 | ||
f792889a | 4463 | static struct type * |
e7c27a73 | 4464 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4465 | { |
e7c27a73 | 4466 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4467 | struct die_info *child_die; |
4468 | struct type *type = NULL; | |
4469 | struct type *element_type, *range_type, *index_type; | |
4470 | struct type **range_types = NULL; | |
4471 | struct attribute *attr; | |
4472 | int ndim = 0; | |
4473 | struct cleanup *back_to; | |
39cbfefa | 4474 | char *name; |
c906108c | 4475 | |
e7c27a73 | 4476 | element_type = die_type (die, cu); |
c906108c SS |
4477 | |
4478 | /* Irix 6.2 native cc creates array types without children for | |
4479 | arrays with unspecified length. */ | |
639d11d3 | 4480 | if (die->child == NULL) |
c906108c | 4481 | { |
6ccb9162 | 4482 | index_type = builtin_type_int32; |
c906108c | 4483 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
4484 | type = create_array_type (NULL, element_type, range_type); |
4485 | return set_die_type (die, type, cu); | |
c906108c SS |
4486 | } |
4487 | ||
4488 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4489 | child_die = die->child; |
c906108c SS |
4490 | while (child_die && child_die->tag) |
4491 | { | |
4492 | if (child_die->tag == DW_TAG_subrange_type) | |
4493 | { | |
f792889a DJ |
4494 | struct type *child_type = read_type_die (child_die, cu); |
4495 | if (child_type != NULL) | |
a02abb62 JB |
4496 | { |
4497 | /* The range type was succesfully read. Save it for | |
4498 | the array type creation. */ | |
4499 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4500 | { | |
4501 | range_types = (struct type **) | |
4502 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4503 | * sizeof (struct type *)); | |
4504 | if (ndim == 0) | |
4505 | make_cleanup (free_current_contents, &range_types); | |
4506 | } | |
f792889a | 4507 | range_types[ndim++] = child_type; |
a02abb62 | 4508 | } |
c906108c SS |
4509 | } |
4510 | child_die = sibling_die (child_die); | |
4511 | } | |
4512 | ||
4513 | /* Dwarf2 dimensions are output from left to right, create the | |
4514 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4515 | |
c906108c | 4516 | type = element_type; |
7ca2d3a3 DL |
4517 | |
4518 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4519 | { | |
4520 | int i = 0; | |
4521 | while (i < ndim) | |
4522 | type = create_array_type (NULL, type, range_types[i++]); | |
4523 | } | |
4524 | else | |
4525 | { | |
4526 | while (ndim-- > 0) | |
4527 | type = create_array_type (NULL, type, range_types[ndim]); | |
4528 | } | |
c906108c | 4529 | |
f5f8a009 EZ |
4530 | /* Understand Dwarf2 support for vector types (like they occur on |
4531 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4532 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4533 | custom vendor extension. The main difference between a regular | |
4534 | array and the vector variant is that vectors are passed by value | |
4535 | to functions. */ | |
e142c38c | 4536 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 4537 | if (attr) |
ea37ba09 | 4538 | make_vector_type (type); |
f5f8a009 | 4539 | |
39cbfefa DJ |
4540 | name = dwarf2_name (die, cu); |
4541 | if (name) | |
4542 | TYPE_NAME (type) = name; | |
714e295e | 4543 | |
c906108c SS |
4544 | do_cleanups (back_to); |
4545 | ||
4546 | /* Install the type in the die. */ | |
f792889a | 4547 | return set_die_type (die, type, cu); |
c906108c SS |
4548 | } |
4549 | ||
7ca2d3a3 DL |
4550 | static enum dwarf_array_dim_ordering |
4551 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4552 | { | |
4553 | struct attribute *attr; | |
4554 | ||
4555 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4556 | ||
4557 | if (attr) return DW_SND (attr); | |
4558 | ||
4559 | /* | |
4560 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4561 | opposite order to the dwarf2 specification, but data is still | |
4562 | laid out as per normal fortran. | |
4563 | ||
4564 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4565 | version checking. | |
4566 | */ | |
4567 | ||
4568 | if (cu->language == language_fortran && | |
4569 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4570 | { | |
4571 | return DW_ORD_row_major; | |
4572 | } | |
4573 | ||
4574 | switch (cu->language_defn->la_array_ordering) | |
4575 | { | |
4576 | case array_column_major: | |
4577 | return DW_ORD_col_major; | |
4578 | case array_row_major: | |
4579 | default: | |
4580 | return DW_ORD_row_major; | |
4581 | }; | |
4582 | } | |
4583 | ||
72019c9c GM |
4584 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4585 | the DIE's type field. */ | |
4586 | ||
f792889a | 4587 | static struct type * |
72019c9c GM |
4588 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
4589 | { | |
f792889a DJ |
4590 | struct type *set_type = create_set_type (NULL, die_type (die, cu)); |
4591 | ||
4592 | return set_die_type (die, set_type, cu); | |
72019c9c | 4593 | } |
7ca2d3a3 | 4594 | |
c906108c SS |
4595 | /* First cut: install each common block member as a global variable. */ |
4596 | ||
4597 | static void | |
e7c27a73 | 4598 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4599 | { |
4600 | struct die_info *child_die; | |
4601 | struct attribute *attr; | |
4602 | struct symbol *sym; | |
4603 | CORE_ADDR base = (CORE_ADDR) 0; | |
4604 | ||
e142c38c | 4605 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4606 | if (attr) |
4607 | { | |
8e19ed76 PS |
4608 | /* Support the .debug_loc offsets */ |
4609 | if (attr_form_is_block (attr)) | |
4610 | { | |
e7c27a73 | 4611 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 4612 | } |
3690dd37 | 4613 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 4614 | { |
4d3c2250 | 4615 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4616 | } |
4617 | else | |
4618 | { | |
4d3c2250 KB |
4619 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4620 | "common block member"); | |
8e19ed76 | 4621 | } |
c906108c | 4622 | } |
639d11d3 | 4623 | if (die->child != NULL) |
c906108c | 4624 | { |
639d11d3 | 4625 | child_die = die->child; |
c906108c SS |
4626 | while (child_die && child_die->tag) |
4627 | { | |
e7c27a73 | 4628 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4629 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4630 | if (attr) |
4631 | { | |
4632 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4633 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4634 | add_symbol_to_list (sym, &global_symbols); |
4635 | } | |
4636 | child_die = sibling_die (child_die); | |
4637 | } | |
4638 | } | |
4639 | } | |
4640 | ||
0114d602 | 4641 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 4642 | |
0114d602 DJ |
4643 | static struct type * |
4644 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 4645 | { |
e7c27a73 | 4646 | struct objfile *objfile = cu->objfile; |
0114d602 | 4647 | const char *previous_prefix, *name; |
9219021c | 4648 | int is_anonymous; |
0114d602 DJ |
4649 | struct type *type; |
4650 | ||
4651 | /* For extensions, reuse the type of the original namespace. */ | |
4652 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
4653 | { | |
4654 | struct die_info *ext_die; | |
4655 | struct dwarf2_cu *ext_cu = cu; | |
4656 | ext_die = dwarf2_extension (die, &ext_cu); | |
4657 | type = read_type_die (ext_die, ext_cu); | |
4658 | return set_die_type (die, type, cu); | |
4659 | } | |
9219021c | 4660 | |
e142c38c | 4661 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4662 | |
4663 | /* Now build the name of the current namespace. */ | |
4664 | ||
0114d602 DJ |
4665 | previous_prefix = determine_prefix (die, cu); |
4666 | if (previous_prefix[0] != '\0') | |
4667 | name = typename_concat (&objfile->objfile_obstack, | |
4668 | previous_prefix, name, cu); | |
4669 | ||
4670 | /* Create the type. */ | |
4671 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
4672 | objfile); | |
4673 | TYPE_NAME (type) = (char *) name; | |
4674 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4675 | ||
4676 | set_die_type (die, type, cu); | |
4677 | ||
4678 | return type; | |
4679 | } | |
4680 | ||
4681 | /* Read a C++ namespace. */ | |
4682 | ||
4683 | static void | |
4684 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4685 | { | |
4686 | struct objfile *objfile = cu->objfile; | |
4687 | const char *name; | |
4688 | int is_anonymous; | |
9219021c | 4689 | |
5c4e30ca DC |
4690 | /* Add a symbol associated to this if we haven't seen the namespace |
4691 | before. Also, add a using directive if it's an anonymous | |
4692 | namespace. */ | |
9219021c | 4693 | |
f2f0e013 | 4694 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
4695 | { |
4696 | struct type *type; | |
4697 | ||
0114d602 | 4698 | type = read_type_die (die, cu); |
e7c27a73 | 4699 | new_symbol (die, type, cu); |
5c4e30ca | 4700 | |
0114d602 | 4701 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 4702 | if (is_anonymous) |
0114d602 DJ |
4703 | { |
4704 | const char *previous_prefix = determine_prefix (die, cu); | |
4705 | cp_add_using_directive (TYPE_NAME (type), | |
4706 | strlen (previous_prefix), | |
4707 | strlen (TYPE_NAME (type))); | |
4708 | } | |
5c4e30ca | 4709 | } |
9219021c | 4710 | |
639d11d3 | 4711 | if (die->child != NULL) |
d9fa45fe | 4712 | { |
639d11d3 | 4713 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4714 | |
4715 | while (child_die && child_die->tag) | |
4716 | { | |
e7c27a73 | 4717 | process_die (child_die, cu); |
d9fa45fe DC |
4718 | child_die = sibling_die (child_die); |
4719 | } | |
4720 | } | |
38d518c9 EZ |
4721 | } |
4722 | ||
4723 | /* Return the name of the namespace represented by DIE. Set | |
4724 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4725 | namespace. */ | |
4726 | ||
4727 | static const char * | |
e142c38c | 4728 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4729 | { |
4730 | struct die_info *current_die; | |
4731 | const char *name = NULL; | |
4732 | ||
4733 | /* Loop through the extensions until we find a name. */ | |
4734 | ||
4735 | for (current_die = die; | |
4736 | current_die != NULL; | |
f2f0e013 | 4737 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 4738 | { |
e142c38c | 4739 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4740 | if (name != NULL) |
4741 | break; | |
4742 | } | |
4743 | ||
4744 | /* Is it an anonymous namespace? */ | |
4745 | ||
4746 | *is_anonymous = (name == NULL); | |
4747 | if (*is_anonymous) | |
4748 | name = "(anonymous namespace)"; | |
4749 | ||
4750 | return name; | |
d9fa45fe DC |
4751 | } |
4752 | ||
c906108c SS |
4753 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4754 | the user defined type vector. */ | |
4755 | ||
f792889a | 4756 | static struct type * |
e7c27a73 | 4757 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4758 | { |
5e2b427d | 4759 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 4760 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4761 | struct type *type; |
8b2dbe47 KB |
4762 | struct attribute *attr_byte_size; |
4763 | struct attribute *attr_address_class; | |
4764 | int byte_size, addr_class; | |
c906108c | 4765 | |
e7c27a73 | 4766 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4767 | |
e142c38c | 4768 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4769 | if (attr_byte_size) |
4770 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4771 | else |
8b2dbe47 KB |
4772 | byte_size = cu_header->addr_size; |
4773 | ||
e142c38c | 4774 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4775 | if (attr_address_class) |
4776 | addr_class = DW_UNSND (attr_address_class); | |
4777 | else | |
4778 | addr_class = DW_ADDR_none; | |
4779 | ||
4780 | /* If the pointer size or address class is different than the | |
4781 | default, create a type variant marked as such and set the | |
4782 | length accordingly. */ | |
4783 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4784 | { |
5e2b427d | 4785 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
4786 | { |
4787 | int type_flags; | |
4788 | ||
849957d9 | 4789 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 4790 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
4791 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
4792 | == 0); | |
8b2dbe47 KB |
4793 | type = make_type_with_address_space (type, type_flags); |
4794 | } | |
4795 | else if (TYPE_LENGTH (type) != byte_size) | |
4796 | { | |
e2e0b3e5 | 4797 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4798 | } |
4799 | else { | |
4800 | /* Should we also complain about unhandled address classes? */ | |
4801 | } | |
c906108c | 4802 | } |
8b2dbe47 KB |
4803 | |
4804 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 4805 | return set_die_type (die, type, cu); |
c906108c SS |
4806 | } |
4807 | ||
4808 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4809 | the user defined type vector. */ | |
4810 | ||
f792889a | 4811 | static struct type * |
e7c27a73 | 4812 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4813 | { |
e7c27a73 | 4814 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4815 | struct type *type; |
4816 | struct type *to_type; | |
4817 | struct type *domain; | |
4818 | ||
e7c27a73 DJ |
4819 | to_type = die_type (die, cu); |
4820 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
4821 | |
4822 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
4823 | type = lookup_methodptr_type (to_type); | |
4824 | else | |
4825 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 4826 | |
f792889a | 4827 | return set_die_type (die, type, cu); |
c906108c SS |
4828 | } |
4829 | ||
4830 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4831 | the user defined type vector. */ | |
4832 | ||
f792889a | 4833 | static struct type * |
e7c27a73 | 4834 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4835 | { |
e7c27a73 | 4836 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4837 | struct type *type; |
4838 | struct attribute *attr; | |
4839 | ||
e7c27a73 | 4840 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4841 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4842 | if (attr) |
4843 | { | |
4844 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4845 | } | |
4846 | else | |
4847 | { | |
107d2387 | 4848 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4849 | } |
f792889a | 4850 | return set_die_type (die, type, cu); |
c906108c SS |
4851 | } |
4852 | ||
f792889a | 4853 | static struct type * |
e7c27a73 | 4854 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4855 | { |
f792889a | 4856 | struct type *base_type, *cv_type; |
c906108c | 4857 | |
e7c27a73 | 4858 | base_type = die_type (die, cu); |
f792889a DJ |
4859 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
4860 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
4861 | } |
4862 | ||
f792889a | 4863 | static struct type * |
e7c27a73 | 4864 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4865 | { |
f792889a | 4866 | struct type *base_type, *cv_type; |
c906108c | 4867 | |
e7c27a73 | 4868 | base_type = die_type (die, cu); |
f792889a DJ |
4869 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
4870 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
4871 | } |
4872 | ||
4873 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4874 | the user defined type vector. It isn't really a user defined type, | |
4875 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4876 | attribute to reference it. */ | |
4877 | ||
f792889a | 4878 | static struct type * |
e7c27a73 | 4879 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4880 | { |
e7c27a73 | 4881 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4882 | struct type *type, *range_type, *index_type, *char_type; |
4883 | struct attribute *attr; | |
4884 | unsigned int length; | |
4885 | ||
e142c38c | 4886 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4887 | if (attr) |
4888 | { | |
4889 | length = DW_UNSND (attr); | |
4890 | } | |
4891 | else | |
4892 | { | |
b21b22e0 | 4893 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4894 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4895 | if (attr) |
4896 | { | |
4897 | length = DW_UNSND (attr); | |
4898 | } | |
4899 | else | |
4900 | { | |
4901 | length = 1; | |
4902 | } | |
c906108c | 4903 | } |
6ccb9162 UW |
4904 | |
4905 | index_type = builtin_type_int32; | |
c906108c | 4906 | range_type = create_range_type (NULL, index_type, 1, length); |
6ccb9162 UW |
4907 | type = create_string_type (NULL, range_type); |
4908 | ||
f792889a | 4909 | return set_die_type (die, type, cu); |
c906108c SS |
4910 | } |
4911 | ||
4912 | /* Handle DIES due to C code like: | |
4913 | ||
4914 | struct foo | |
c5aa993b JM |
4915 | { |
4916 | int (*funcp)(int a, long l); | |
4917 | int b; | |
4918 | }; | |
c906108c SS |
4919 | |
4920 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4921 | */ |
c906108c | 4922 | |
f792889a | 4923 | static struct type * |
e7c27a73 | 4924 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4925 | { |
4926 | struct type *type; /* Type that this function returns */ | |
4927 | struct type *ftype; /* Function that returns above type */ | |
4928 | struct attribute *attr; | |
4929 | ||
e7c27a73 | 4930 | type = die_type (die, cu); |
1326e61b | 4931 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4932 | |
5b8101ae | 4933 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 4934 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4935 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 4936 | || cu->language == language_cplus |
5b8101ae PM |
4937 | || cu->language == language_java |
4938 | || cu->language == language_pascal) | |
876cecd0 | 4939 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 4940 | |
c055b101 CV |
4941 | /* Store the calling convention in the type if it's available in |
4942 | the subroutine die. Otherwise set the calling convention to | |
4943 | the default value DW_CC_normal. */ | |
4944 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
4945 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
4946 | ||
639d11d3 | 4947 | if (die->child != NULL) |
c906108c SS |
4948 | { |
4949 | struct die_info *child_die; | |
4950 | int nparams = 0; | |
4951 | int iparams = 0; | |
4952 | ||
4953 | /* Count the number of parameters. | |
4954 | FIXME: GDB currently ignores vararg functions, but knows about | |
4955 | vararg member functions. */ | |
639d11d3 | 4956 | child_die = die->child; |
c906108c SS |
4957 | while (child_die && child_die->tag) |
4958 | { | |
4959 | if (child_die->tag == DW_TAG_formal_parameter) | |
4960 | nparams++; | |
4961 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 4962 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
4963 | child_die = sibling_die (child_die); |
4964 | } | |
4965 | ||
4966 | /* Allocate storage for parameters and fill them in. */ | |
4967 | TYPE_NFIELDS (ftype) = nparams; | |
4968 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4969 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4970 | |
639d11d3 | 4971 | child_die = die->child; |
c906108c SS |
4972 | while (child_die && child_die->tag) |
4973 | { | |
4974 | if (child_die->tag == DW_TAG_formal_parameter) | |
4975 | { | |
4976 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4977 | member functions. G++ helps GDB by marking the first |
4978 | parameter for non-static member functions (which is the | |
4979 | this pointer) as artificial. We pass this information | |
4980 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4981 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4982 | if (attr) |
4983 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4984 | else | |
4985 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4986 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4987 | iparams++; |
4988 | } | |
4989 | child_die = sibling_die (child_die); | |
4990 | } | |
4991 | } | |
4992 | ||
f792889a | 4993 | return set_die_type (die, ftype, cu); |
c906108c SS |
4994 | } |
4995 | ||
f792889a | 4996 | static struct type * |
e7c27a73 | 4997 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4998 | { |
e7c27a73 | 4999 | struct objfile *objfile = cu->objfile; |
2f038fcb | 5000 | struct attribute *attr; |
0114d602 | 5001 | const char *name = NULL; |
f792889a | 5002 | struct type *this_type; |
c906108c | 5003 | |
0114d602 | 5004 | name = dwarf2_full_name (die, cu); |
f792889a | 5005 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
5006 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
5007 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
5008 | set_die_type (die, this_type, cu); |
5009 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
5010 | return this_type; | |
c906108c SS |
5011 | } |
5012 | ||
5013 | /* Find a representation of a given base type and install | |
5014 | it in the TYPE field of the die. */ | |
5015 | ||
f792889a | 5016 | static struct type * |
e7c27a73 | 5017 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5018 | { |
e7c27a73 | 5019 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5020 | struct type *type; |
5021 | struct attribute *attr; | |
5022 | int encoding = 0, size = 0; | |
39cbfefa | 5023 | char *name; |
6ccb9162 UW |
5024 | enum type_code code = TYPE_CODE_INT; |
5025 | int type_flags = 0; | |
5026 | struct type *target_type = NULL; | |
c906108c | 5027 | |
e142c38c | 5028 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
5029 | if (attr) |
5030 | { | |
5031 | encoding = DW_UNSND (attr); | |
5032 | } | |
e142c38c | 5033 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5034 | if (attr) |
5035 | { | |
5036 | size = DW_UNSND (attr); | |
5037 | } | |
39cbfefa | 5038 | name = dwarf2_name (die, cu); |
6ccb9162 | 5039 | if (!name) |
c906108c | 5040 | { |
6ccb9162 UW |
5041 | complaint (&symfile_complaints, |
5042 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 5043 | } |
6ccb9162 UW |
5044 | |
5045 | switch (encoding) | |
c906108c | 5046 | { |
6ccb9162 UW |
5047 | case DW_ATE_address: |
5048 | /* Turn DW_ATE_address into a void * pointer. */ | |
5049 | code = TYPE_CODE_PTR; | |
5050 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5051 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
5052 | break; | |
5053 | case DW_ATE_boolean: | |
5054 | code = TYPE_CODE_BOOL; | |
5055 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5056 | break; | |
5057 | case DW_ATE_complex_float: | |
5058 | code = TYPE_CODE_COMPLEX; | |
5059 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
5060 | break; | |
5061 | case DW_ATE_decimal_float: | |
5062 | code = TYPE_CODE_DECFLOAT; | |
5063 | break; | |
5064 | case DW_ATE_float: | |
5065 | code = TYPE_CODE_FLT; | |
5066 | break; | |
5067 | case DW_ATE_signed: | |
5068 | break; | |
5069 | case DW_ATE_unsigned: | |
5070 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5071 | break; | |
5072 | case DW_ATE_signed_char: | |
1760d9d5 | 5073 | if (cu->language == language_ada || cu->language == language_m2) |
6ccb9162 UW |
5074 | code = TYPE_CODE_CHAR; |
5075 | break; | |
5076 | case DW_ATE_unsigned_char: | |
1760d9d5 | 5077 | if (cu->language == language_ada || cu->language == language_m2) |
6ccb9162 UW |
5078 | code = TYPE_CODE_CHAR; |
5079 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5080 | break; | |
5081 | default: | |
5082 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
5083 | dwarf_type_encoding_name (encoding)); | |
5084 | break; | |
c906108c | 5085 | } |
6ccb9162 | 5086 | |
0114d602 DJ |
5087 | type = init_type (code, size, type_flags, NULL, objfile); |
5088 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
5089 | TYPE_TARGET_TYPE (type) = target_type; |
5090 | ||
0114d602 | 5091 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 5092 | TYPE_NOSIGN (type) = 1; |
0114d602 | 5093 | |
f792889a | 5094 | return set_die_type (die, type, cu); |
c906108c SS |
5095 | } |
5096 | ||
a02abb62 JB |
5097 | /* Read the given DW_AT_subrange DIE. */ |
5098 | ||
f792889a | 5099 | static struct type * |
a02abb62 JB |
5100 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
5101 | { | |
5e2b427d | 5102 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
5103 | struct type *base_type; |
5104 | struct type *range_type; | |
5105 | struct attribute *attr; | |
5106 | int low = 0; | |
5107 | int high = -1; | |
39cbfefa | 5108 | char *name; |
a02abb62 | 5109 | |
a02abb62 | 5110 | base_type = die_type (die, cu); |
3d1f72c2 | 5111 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
5112 | { |
5113 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5114 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 5115 | base_type |
5e2b427d | 5116 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (gdbarch) / 8, |
6ccb9162 | 5117 | 0, NULL, cu->objfile); |
a02abb62 JB |
5118 | } |
5119 | ||
e142c38c | 5120 | if (cu->language == language_fortran) |
a02abb62 JB |
5121 | { |
5122 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
5123 | low = 1; | |
5124 | } | |
5125 | ||
dd5e6932 DJ |
5126 | /* FIXME: For variable sized arrays either of these could be |
5127 | a variable rather than a constant value. We'll allow it, | |
5128 | but we don't know how to handle it. */ | |
e142c38c | 5129 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
5130 | if (attr) |
5131 | low = dwarf2_get_attr_constant_value (attr, 0); | |
5132 | ||
e142c38c | 5133 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
5134 | if (attr) |
5135 | { | |
5136 | if (attr->form == DW_FORM_block1) | |
5137 | { | |
5138 | /* GCC encodes arrays with unspecified or dynamic length | |
5139 | with a DW_FORM_block1 attribute. | |
5140 | FIXME: GDB does not yet know how to handle dynamic | |
5141 | arrays properly, treat them as arrays with unspecified | |
5142 | length for now. | |
5143 | ||
5144 | FIXME: jimb/2003-09-22: GDB does not really know | |
5145 | how to handle arrays of unspecified length | |
5146 | either; we just represent them as zero-length | |
5147 | arrays. Choose an appropriate upper bound given | |
5148 | the lower bound we've computed above. */ | |
5149 | high = low - 1; | |
5150 | } | |
5151 | else | |
5152 | high = dwarf2_get_attr_constant_value (attr, 1); | |
5153 | } | |
5154 | ||
5155 | range_type = create_range_type (NULL, base_type, low, high); | |
5156 | ||
39cbfefa DJ |
5157 | name = dwarf2_name (die, cu); |
5158 | if (name) | |
5159 | TYPE_NAME (range_type) = name; | |
a02abb62 | 5160 | |
e142c38c | 5161 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
5162 | if (attr) |
5163 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
5164 | ||
f792889a | 5165 | return set_die_type (die, range_type, cu); |
a02abb62 JB |
5166 | } |
5167 | ||
f792889a | 5168 | static struct type * |
81a17f79 JB |
5169 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
5170 | { | |
5171 | struct type *type; | |
81a17f79 | 5172 | |
81a17f79 JB |
5173 | /* For now, we only support the C meaning of an unspecified type: void. */ |
5174 | ||
0114d602 DJ |
5175 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
5176 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 5177 | |
f792889a | 5178 | return set_die_type (die, type, cu); |
81a17f79 | 5179 | } |
a02abb62 | 5180 | |
51545339 DJ |
5181 | /* Trivial hash function for die_info: the hash value of a DIE |
5182 | is its offset in .debug_info for this objfile. */ | |
5183 | ||
5184 | static hashval_t | |
5185 | die_hash (const void *item) | |
5186 | { | |
5187 | const struct die_info *die = item; | |
5188 | return die->offset; | |
5189 | } | |
5190 | ||
5191 | /* Trivial comparison function for die_info structures: two DIEs | |
5192 | are equal if they have the same offset. */ | |
5193 | ||
5194 | static int | |
5195 | die_eq (const void *item_lhs, const void *item_rhs) | |
5196 | { | |
5197 | const struct die_info *die_lhs = item_lhs; | |
5198 | const struct die_info *die_rhs = item_rhs; | |
5199 | return die_lhs->offset == die_rhs->offset; | |
5200 | } | |
5201 | ||
c906108c SS |
5202 | /* Read a whole compilation unit into a linked list of dies. */ |
5203 | ||
f9aca02d | 5204 | static struct die_info * |
fe1b8b76 | 5205 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5206 | { |
51545339 DJ |
5207 | cu->die_hash |
5208 | = htab_create_alloc_ex (cu->header.length / 12, | |
5209 | die_hash, | |
5210 | die_eq, | |
5211 | NULL, | |
5212 | &cu->comp_unit_obstack, | |
5213 | hashtab_obstack_allocate, | |
5214 | dummy_obstack_deallocate); | |
5215 | ||
e7c27a73 | 5216 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
5217 | } |
5218 | ||
d97bc12b DE |
5219 | /* Main entry point for reading a DIE and all children. |
5220 | Read the DIE and dump it if requested. */ | |
5221 | ||
5222 | static struct die_info * | |
5223 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, | |
5224 | struct dwarf2_cu *cu, | |
5225 | gdb_byte **new_info_ptr, | |
5226 | struct die_info *parent) | |
5227 | { | |
5228 | struct die_info *result = read_die_and_children_1 (info_ptr, abfd, cu, | |
5229 | new_info_ptr, parent); | |
5230 | ||
5231 | if (dwarf2_die_debug) | |
5232 | { | |
5233 | fprintf_unfiltered (gdb_stdlog, "Read die from .debug_info:\n"); | |
5234 | dump_die (result, dwarf2_die_debug); | |
5235 | } | |
5236 | ||
5237 | return result; | |
5238 | } | |
5239 | ||
639d11d3 DC |
5240 | /* Read a single die and all its descendents. Set the die's sibling |
5241 | field to NULL; set other fields in the die correctly, and set all | |
5242 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
5243 | location of the info_ptr after reading all of those dies. PARENT | |
5244 | is the parent of the die in question. */ | |
5245 | ||
5246 | static struct die_info * | |
d97bc12b DE |
5247 | read_die_and_children_1 (gdb_byte *info_ptr, bfd *abfd, |
5248 | struct dwarf2_cu *cu, | |
5249 | gdb_byte **new_info_ptr, | |
5250 | struct die_info *parent) | |
639d11d3 DC |
5251 | { |
5252 | struct die_info *die; | |
fe1b8b76 | 5253 | gdb_byte *cur_ptr; |
639d11d3 DC |
5254 | int has_children; |
5255 | ||
e7c27a73 | 5256 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
1d325ec1 DJ |
5257 | if (die == NULL) |
5258 | { | |
5259 | *new_info_ptr = cur_ptr; | |
5260 | return NULL; | |
5261 | } | |
51545339 | 5262 | store_in_ref_table (die, cu); |
639d11d3 DC |
5263 | |
5264 | if (has_children) | |
5265 | { | |
e7c27a73 | 5266 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5267 | new_info_ptr, die); |
5268 | } | |
5269 | else | |
5270 | { | |
5271 | die->child = NULL; | |
5272 | *new_info_ptr = cur_ptr; | |
5273 | } | |
5274 | ||
5275 | die->sibling = NULL; | |
5276 | die->parent = parent; | |
5277 | return die; | |
5278 | } | |
5279 | ||
5280 | /* Read a die, all of its descendents, and all of its siblings; set | |
5281 | all of the fields of all of the dies correctly. Arguments are as | |
5282 | in read_die_and_children. */ | |
5283 | ||
5284 | static struct die_info * | |
fe1b8b76 | 5285 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5286 | struct dwarf2_cu *cu, |
fe1b8b76 | 5287 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5288 | struct die_info *parent) |
5289 | { | |
5290 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5291 | gdb_byte *cur_ptr; |
639d11d3 | 5292 | |
c906108c | 5293 | cur_ptr = info_ptr; |
639d11d3 DC |
5294 | first_die = last_sibling = NULL; |
5295 | ||
5296 | while (1) | |
c906108c | 5297 | { |
639d11d3 | 5298 | struct die_info *die |
d97bc12b | 5299 | = read_die_and_children_1 (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 | 5300 | |
1d325ec1 | 5301 | if (die == NULL) |
c906108c | 5302 | { |
639d11d3 DC |
5303 | *new_info_ptr = cur_ptr; |
5304 | return first_die; | |
c906108c | 5305 | } |
1d325ec1 DJ |
5306 | |
5307 | if (!first_die) | |
5308 | first_die = die; | |
c906108c | 5309 | else |
1d325ec1 DJ |
5310 | last_sibling->sibling = die; |
5311 | ||
5312 | last_sibling = die; | |
c906108c | 5313 | } |
c906108c SS |
5314 | } |
5315 | ||
233a11ab CS |
5316 | /* Decompress a section that was compressed using zlib. Store the |
5317 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
5318 | ||
5319 | static void | |
5320 | zlib_decompress_section (struct objfile *objfile, asection *sectp, | |
5321 | gdb_byte **outbuf, bfd_size_type *outsize) | |
5322 | { | |
ef72380d | 5323 | bfd *abfd = objfile->obfd; |
233a11ab CS |
5324 | #ifndef HAVE_ZLIB_H |
5325 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
5326 | "is disabled in this copy of GDB"), | |
5327 | bfd_get_filename (abfd)); | |
5328 | #else | |
233a11ab CS |
5329 | bfd_size_type compressed_size = bfd_get_section_size (sectp); |
5330 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
5331 | bfd_size_type uncompressed_size; | |
5332 | gdb_byte *uncompressed_buffer; | |
5333 | z_stream strm; | |
5334 | int rc; | |
5335 | int header_size = 12; | |
5336 | ||
5337 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
5338 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
5339 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
5340 | bfd_get_filename (abfd)); | |
5341 | ||
5342 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
5343 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
5344 | if (compressed_size < header_size | |
5345 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
5346 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
5347 | bfd_get_filename (abfd)); | |
5348 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
5349 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
5350 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
5351 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
5352 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
5353 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
5354 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
5355 | uncompressed_size += compressed_buffer[11]; | |
5356 | ||
5357 | /* It is possible the section consists of several compressed | |
5358 | buffers concatenated together, so we uncompress in a loop. */ | |
5359 | strm.zalloc = NULL; | |
5360 | strm.zfree = NULL; | |
5361 | strm.opaque = NULL; | |
5362 | strm.avail_in = compressed_size - header_size; | |
5363 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
5364 | strm.avail_out = uncompressed_size; | |
5365 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
5366 | uncompressed_size); | |
5367 | rc = inflateInit (&strm); | |
5368 | while (strm.avail_in > 0) | |
5369 | { | |
5370 | if (rc != Z_OK) | |
5371 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
5372 | bfd_get_filename (abfd), rc); | |
5373 | strm.next_out = ((Bytef*) uncompressed_buffer | |
5374 | + (uncompressed_size - strm.avail_out)); | |
5375 | rc = inflate (&strm, Z_FINISH); | |
5376 | if (rc != Z_STREAM_END) | |
5377 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
5378 | bfd_get_filename (abfd), rc); | |
5379 | rc = inflateReset (&strm); | |
5380 | } | |
5381 | rc = inflateEnd (&strm); | |
5382 | if (rc != Z_OK | |
5383 | || strm.avail_out != 0) | |
5384 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
5385 | bfd_get_filename (abfd), rc); | |
5386 | ||
5387 | xfree (compressed_buffer); | |
5388 | *outbuf = uncompressed_buffer; | |
5389 | *outsize = uncompressed_size; | |
5390 | #endif | |
5391 | } | |
5392 | ||
5393 | ||
c906108c | 5394 | /* Read the contents of the section at OFFSET and of size SIZE from the |
233a11ab CS |
5395 | object file specified by OBJFILE into the objfile_obstack and return it. |
5396 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 5397 | |
fe1b8b76 | 5398 | gdb_byte * |
188dd5d6 | 5399 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5400 | { |
5401 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5402 | gdb_byte *buf, *retbuf; |
2c500098 | 5403 | bfd_size_type size = bfd_get_section_size (sectp); |
233a11ab | 5404 | unsigned char header[4]; |
c906108c SS |
5405 | |
5406 | if (size == 0) | |
5407 | return NULL; | |
5408 | ||
233a11ab CS |
5409 | /* Check if the file has a 4-byte header indicating compression. */ |
5410 | if (size > sizeof (header) | |
5411 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
5412 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
5413 | { | |
5414 | /* Upon decompression, update the buffer and its size. */ | |
5415 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
5416 | { | |
5417 | zlib_decompress_section (objfile, sectp, &buf, &size); | |
5418 | dwarf2_resize_section (sectp, size); | |
5419 | return buf; | |
5420 | } | |
5421 | } | |
5422 | ||
5423 | /* If we get here, we are a normal, not-compressed section. */ | |
fe1b8b76 | 5424 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
233a11ab CS |
5425 | /* When debugging .o files, we may need to apply relocations; see |
5426 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
5427 | We never compress sections in .o files, so we only need to | |
5428 | try this when the section is not compressed. */ | |
fe1b8b76 | 5429 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); |
086df311 DJ |
5430 | if (retbuf != NULL) |
5431 | return retbuf; | |
5432 | ||
188dd5d6 DJ |
5433 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5434 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5435 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5436 | bfd_get_filename (abfd)); |
5437 | ||
c906108c SS |
5438 | return buf; |
5439 | } | |
5440 | ||
5441 | /* In DWARF version 2, the description of the debugging information is | |
5442 | stored in a separate .debug_abbrev section. Before we read any | |
5443 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5444 | in a hash table. This function also sets flags in CU describing |
5445 | the data found in the abbrev table. */ | |
c906108c SS |
5446 | |
5447 | static void | |
e7c27a73 | 5448 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5449 | { |
e7c27a73 | 5450 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5451 | gdb_byte *abbrev_ptr; |
c906108c SS |
5452 | struct abbrev_info *cur_abbrev; |
5453 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5454 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5455 | struct attr_abbrev *cur_attrs; |
5456 | unsigned int allocated_attrs; | |
c906108c | 5457 | |
57349743 | 5458 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5459 | obstack_init (&cu->abbrev_obstack); |
5460 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5461 | (ABBREV_HASH_SIZE | |
5462 | * sizeof (struct abbrev_info *))); | |
5463 | memset (cu->dwarf2_abbrevs, 0, | |
5464 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5465 | |
6502dd73 | 5466 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5467 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5468 | abbrev_ptr += bytes_read; | |
5469 | ||
f3dd6933 DJ |
5470 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5471 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5472 | ||
c906108c SS |
5473 | /* loop until we reach an abbrev number of 0 */ |
5474 | while (abbrev_number) | |
5475 | { | |
f3dd6933 | 5476 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5477 | |
5478 | /* read in abbrev header */ | |
5479 | cur_abbrev->number = abbrev_number; | |
5480 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5481 | abbrev_ptr += bytes_read; | |
5482 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5483 | abbrev_ptr += 1; | |
5484 | ||
72bf9492 DJ |
5485 | if (cur_abbrev->tag == DW_TAG_namespace) |
5486 | cu->has_namespace_info = 1; | |
5487 | ||
c906108c SS |
5488 | /* now read in declarations */ |
5489 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5490 | abbrev_ptr += bytes_read; | |
5491 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5492 | abbrev_ptr += bytes_read; | |
5493 | while (abbrev_name) | |
5494 | { | |
f3dd6933 | 5495 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5496 | { |
f3dd6933 DJ |
5497 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5498 | cur_attrs | |
5499 | = xrealloc (cur_attrs, (allocated_attrs | |
5500 | * sizeof (struct attr_abbrev))); | |
c906108c | 5501 | } |
ae038cb0 DJ |
5502 | |
5503 | /* Record whether this compilation unit might have | |
5504 | inter-compilation-unit references. If we don't know what form | |
5505 | this attribute will have, then it might potentially be a | |
5506 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5507 | references. */ | |
5508 | ||
5509 | if (abbrev_form == DW_FORM_ref_addr | |
5510 | || abbrev_form == DW_FORM_indirect) | |
5511 | cu->has_form_ref_addr = 1; | |
5512 | ||
f3dd6933 DJ |
5513 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5514 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5515 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5516 | abbrev_ptr += bytes_read; | |
5517 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5518 | abbrev_ptr += bytes_read; | |
5519 | } | |
5520 | ||
f3dd6933 DJ |
5521 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5522 | (cur_abbrev->num_attrs | |
5523 | * sizeof (struct attr_abbrev))); | |
5524 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5525 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5526 | ||
c906108c | 5527 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5528 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5529 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5530 | |
5531 | /* Get next abbreviation. | |
5532 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5533 | always properly terminated with an abbrev number of 0. |
5534 | Exit loop if we encounter an abbreviation which we have | |
5535 | already read (which means we are about to read the abbreviations | |
5536 | for the next compile unit) or if the end of the abbreviation | |
5537 | table is reached. */ | |
6502dd73 DJ |
5538 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5539 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5540 | break; |
5541 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5542 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5543 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5544 | break; |
5545 | } | |
f3dd6933 DJ |
5546 | |
5547 | xfree (cur_attrs); | |
c906108c SS |
5548 | } |
5549 | ||
f3dd6933 | 5550 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5551 | |
c906108c | 5552 | static void |
f3dd6933 | 5553 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5554 | { |
f3dd6933 | 5555 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5556 | |
f3dd6933 DJ |
5557 | obstack_free (&cu->abbrev_obstack, NULL); |
5558 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5559 | } |
5560 | ||
5561 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5562 | ||
5563 | static struct abbrev_info * | |
e7c27a73 | 5564 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5565 | { |
5566 | unsigned int hash_number; | |
5567 | struct abbrev_info *abbrev; | |
5568 | ||
5569 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5570 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5571 | |
5572 | while (abbrev) | |
5573 | { | |
5574 | if (abbrev->number == number) | |
5575 | return abbrev; | |
5576 | else | |
5577 | abbrev = abbrev->next; | |
5578 | } | |
5579 | return NULL; | |
5580 | } | |
5581 | ||
72bf9492 DJ |
5582 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5583 | symbol for. */ | |
5584 | ||
5585 | static int | |
5586 | is_type_tag_for_partial (int tag) | |
5587 | { | |
5588 | switch (tag) | |
5589 | { | |
5590 | #if 0 | |
5591 | /* Some types that would be reasonable to generate partial symbols for, | |
5592 | that we don't at present. */ | |
5593 | case DW_TAG_array_type: | |
5594 | case DW_TAG_file_type: | |
5595 | case DW_TAG_ptr_to_member_type: | |
5596 | case DW_TAG_set_type: | |
5597 | case DW_TAG_string_type: | |
5598 | case DW_TAG_subroutine_type: | |
5599 | #endif | |
5600 | case DW_TAG_base_type: | |
5601 | case DW_TAG_class_type: | |
680b30c7 | 5602 | case DW_TAG_interface_type: |
72bf9492 DJ |
5603 | case DW_TAG_enumeration_type: |
5604 | case DW_TAG_structure_type: | |
5605 | case DW_TAG_subrange_type: | |
5606 | case DW_TAG_typedef: | |
5607 | case DW_TAG_union_type: | |
5608 | return 1; | |
5609 | default: | |
5610 | return 0; | |
5611 | } | |
5612 | } | |
5613 | ||
5614 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5615 | ||
5616 | static struct partial_die_info * | |
fe1b8b76 | 5617 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5618 | struct dwarf2_cu *cu) |
5619 | { | |
5620 | struct partial_die_info *part_die; | |
5621 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5622 | struct abbrev_info *abbrev; | |
5623 | unsigned int bytes_read; | |
5afb4e99 | 5624 | unsigned int load_all = 0; |
72bf9492 DJ |
5625 | |
5626 | int nesting_level = 1; | |
5627 | ||
5628 | parent_die = NULL; | |
5629 | last_die = NULL; | |
5630 | ||
5afb4e99 DJ |
5631 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5632 | load_all = 1; | |
5633 | ||
72bf9492 DJ |
5634 | cu->partial_dies |
5635 | = htab_create_alloc_ex (cu->header.length / 12, | |
5636 | partial_die_hash, | |
5637 | partial_die_eq, | |
5638 | NULL, | |
5639 | &cu->comp_unit_obstack, | |
5640 | hashtab_obstack_allocate, | |
5641 | dummy_obstack_deallocate); | |
5642 | ||
5643 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5644 | sizeof (struct partial_die_info)); | |
5645 | ||
5646 | while (1) | |
5647 | { | |
5648 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5649 | ||
5650 | /* A NULL abbrev means the end of a series of children. */ | |
5651 | if (abbrev == NULL) | |
5652 | { | |
5653 | if (--nesting_level == 0) | |
5654 | { | |
5655 | /* PART_DIE was probably the last thing allocated on the | |
5656 | comp_unit_obstack, so we could call obstack_free | |
5657 | here. We don't do that because the waste is small, | |
5658 | and will be cleaned up when we're done with this | |
5659 | compilation unit. This way, we're also more robust | |
5660 | against other users of the comp_unit_obstack. */ | |
5661 | return first_die; | |
5662 | } | |
5663 | info_ptr += bytes_read; | |
5664 | last_die = parent_die; | |
5665 | parent_die = parent_die->die_parent; | |
5666 | continue; | |
5667 | } | |
5668 | ||
5afb4e99 DJ |
5669 | /* Check whether this DIE is interesting enough to save. Normally |
5670 | we would not be interested in members here, but there may be | |
5671 | later variables referencing them via DW_AT_specification (for | |
5672 | static members). */ | |
5673 | if (!load_all | |
5674 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5675 | && abbrev->tag != DW_TAG_enumerator |
5676 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 5677 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 5678 | && abbrev->tag != DW_TAG_variable |
5afb4e99 DJ |
5679 | && abbrev->tag != DW_TAG_namespace |
5680 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5681 | { |
5682 | /* Otherwise we skip to the next sibling, if any. */ | |
5683 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5684 | continue; | |
5685 | } | |
5686 | ||
5687 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5688 | abfd, info_ptr, cu); | |
5689 | ||
5690 | /* This two-pass algorithm for processing partial symbols has a | |
5691 | high cost in cache pressure. Thus, handle some simple cases | |
5692 | here which cover the majority of C partial symbols. DIEs | |
5693 | which neither have specification tags in them, nor could have | |
5694 | specification tags elsewhere pointing at them, can simply be | |
5695 | processed and discarded. | |
5696 | ||
5697 | This segment is also optional; scan_partial_symbols and | |
5698 | add_partial_symbol will handle these DIEs if we chain | |
5699 | them in normally. When compilers which do not emit large | |
5700 | quantities of duplicate debug information are more common, | |
5701 | this code can probably be removed. */ | |
5702 | ||
5703 | /* Any complete simple types at the top level (pretty much all | |
5704 | of them, for a language without namespaces), can be processed | |
5705 | directly. */ | |
5706 | if (parent_die == NULL | |
5707 | && part_die->has_specification == 0 | |
5708 | && part_die->is_declaration == 0 | |
5709 | && (part_die->tag == DW_TAG_typedef | |
5710 | || part_die->tag == DW_TAG_base_type | |
5711 | || part_die->tag == DW_TAG_subrange_type)) | |
5712 | { | |
5713 | if (building_psymtab && part_die->name != NULL) | |
5714 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5715 | VAR_DOMAIN, LOC_TYPEDEF, | |
5716 | &cu->objfile->static_psymbols, | |
5717 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5718 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5719 | continue; | |
5720 | } | |
5721 | ||
5722 | /* If we're at the second level, and we're an enumerator, and | |
5723 | our parent has no specification (meaning possibly lives in a | |
5724 | namespace elsewhere), then we can add the partial symbol now | |
5725 | instead of queueing it. */ | |
5726 | if (part_die->tag == DW_TAG_enumerator | |
5727 | && parent_die != NULL | |
5728 | && parent_die->die_parent == NULL | |
5729 | && parent_die->tag == DW_TAG_enumeration_type | |
5730 | && parent_die->has_specification == 0) | |
5731 | { | |
5732 | if (part_die->name == NULL) | |
e2e0b3e5 | 5733 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5734 | else if (building_psymtab) |
5735 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5736 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5737 | (cu->language == language_cplus |
5738 | || cu->language == language_java) | |
72bf9492 DJ |
5739 | ? &cu->objfile->global_psymbols |
5740 | : &cu->objfile->static_psymbols, | |
5741 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5742 | ||
5743 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5744 | continue; | |
5745 | } | |
5746 | ||
5747 | /* We'll save this DIE so link it in. */ | |
5748 | part_die->die_parent = parent_die; | |
5749 | part_die->die_sibling = NULL; | |
5750 | part_die->die_child = NULL; | |
5751 | ||
5752 | if (last_die && last_die == parent_die) | |
5753 | last_die->die_child = part_die; | |
5754 | else if (last_die) | |
5755 | last_die->die_sibling = part_die; | |
5756 | ||
5757 | last_die = part_die; | |
5758 | ||
5759 | if (first_die == NULL) | |
5760 | first_die = part_die; | |
5761 | ||
5762 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5763 | find interesting need to be in the hash table, because we | |
5764 | also have the parent/sibling/child chains; only those that we | |
5765 | might refer to by offset later during partial symbol reading. | |
5766 | ||
5767 | For now this means things that might have be the target of a | |
5768 | DW_AT_specification, DW_AT_abstract_origin, or | |
5769 | DW_AT_extension. DW_AT_extension will refer only to | |
5770 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5771 | many things under the function DIE, but we do not recurse | |
5772 | into function DIEs during partial symbol reading) and | |
5773 | possibly variables as well; DW_AT_specification refers to | |
5774 | declarations. Declarations ought to have the DW_AT_declaration | |
5775 | flag. It happens that GCC forgets to put it in sometimes, but | |
5776 | only for functions, not for types. | |
5777 | ||
5778 | Adding more things than necessary to the hash table is harmless | |
5779 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5780 | wasted time in find_partial_die, when we reread the compilation |
5781 | unit with load_all_dies set. */ | |
72bf9492 | 5782 | |
5afb4e99 DJ |
5783 | if (load_all |
5784 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5785 | || abbrev->tag == DW_TAG_variable |
5786 | || abbrev->tag == DW_TAG_namespace | |
5787 | || part_die->is_declaration) | |
5788 | { | |
5789 | void **slot; | |
5790 | ||
5791 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5792 | part_die->offset, INSERT); | |
5793 | *slot = part_die; | |
5794 | } | |
5795 | ||
5796 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5797 | sizeof (struct partial_die_info)); | |
5798 | ||
5799 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 5800 | we have no reason to follow the children of structures; for other |
72bf9492 | 5801 | languages we have to, both so that we can get at method physnames |
bc30ff58 JB |
5802 | to infer fully qualified class names, and for DW_AT_specification. |
5803 | ||
5804 | For Ada, we need to scan the children of subprograms and lexical | |
5805 | blocks as well because Ada allows the definition of nested | |
5806 | entities that could be interesting for the debugger, such as | |
5807 | nested subprograms for instance. */ | |
72bf9492 | 5808 | if (last_die->has_children |
5afb4e99 DJ |
5809 | && (load_all |
5810 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5811 | || last_die->tag == DW_TAG_enumeration_type |
5812 | || (cu->language != language_c | |
5813 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 5814 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 5815 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
5816 | || last_die->tag == DW_TAG_union_type)) |
5817 | || (cu->language == language_ada | |
5818 | && (last_die->tag == DW_TAG_subprogram | |
5819 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
5820 | { |
5821 | nesting_level++; | |
5822 | parent_die = last_die; | |
5823 | continue; | |
5824 | } | |
5825 | ||
5826 | /* Otherwise we skip to the next sibling, if any. */ | |
5827 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5828 | ||
5829 | /* Back to the top, do it again. */ | |
5830 | } | |
5831 | } | |
5832 | ||
c906108c SS |
5833 | /* Read a minimal amount of information into the minimal die structure. */ |
5834 | ||
fe1b8b76 | 5835 | static gdb_byte * |
72bf9492 DJ |
5836 | read_partial_die (struct partial_die_info *part_die, |
5837 | struct abbrev_info *abbrev, | |
5838 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5839 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5840 | { |
72bf9492 | 5841 | unsigned int bytes_read, i; |
c906108c | 5842 | struct attribute attr; |
c5aa993b | 5843 | int has_low_pc_attr = 0; |
c906108c | 5844 | int has_high_pc_attr = 0; |
e7030f15 | 5845 | CORE_ADDR base_address = 0; |
85cbf3d3 JK |
5846 | enum |
5847 | { | |
5848 | base_address_none, | |
5849 | base_address_low_pc, | |
5850 | /* Overrides BASE_ADDRESS_LOW_PC. */ | |
5851 | base_address_entry_pc | |
5852 | } | |
5853 | base_address_type = base_address_none; | |
c906108c | 5854 | |
72bf9492 | 5855 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5856 | |
6502dd73 | 5857 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5858 | |
5859 | info_ptr += abbrev_len; | |
5860 | ||
5861 | if (abbrev == NULL) | |
5862 | return info_ptr; | |
5863 | ||
c906108c SS |
5864 | part_die->tag = abbrev->tag; |
5865 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5866 | |
5867 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5868 | { | |
e7c27a73 | 5869 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5870 | |
5871 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5872 | partial symbol table. */ |
c906108c SS |
5873 | switch (attr.name) |
5874 | { | |
5875 | case DW_AT_name: | |
5876 | ||
5877 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5878 | if (part_die->name == NULL) | |
5879 | part_die->name = DW_STRING (&attr); | |
5880 | break; | |
57c22c6c BR |
5881 | case DW_AT_comp_dir: |
5882 | if (part_die->dirname == NULL) | |
5883 | part_die->dirname = DW_STRING (&attr); | |
5884 | break; | |
c906108c SS |
5885 | case DW_AT_MIPS_linkage_name: |
5886 | part_die->name = DW_STRING (&attr); | |
5887 | break; | |
5888 | case DW_AT_low_pc: | |
5889 | has_low_pc_attr = 1; | |
5890 | part_die->lowpc = DW_ADDR (&attr); | |
85cbf3d3 JK |
5891 | if (part_die->tag == DW_TAG_compile_unit |
5892 | && base_address_type < base_address_low_pc) | |
5893 | { | |
5894 | base_address = DW_ADDR (&attr); | |
5895 | base_address_type = base_address_low_pc; | |
5896 | } | |
c906108c SS |
5897 | break; |
5898 | case DW_AT_high_pc: | |
5899 | has_high_pc_attr = 1; | |
5900 | part_die->highpc = DW_ADDR (&attr); | |
5901 | break; | |
85cbf3d3 JK |
5902 | case DW_AT_entry_pc: |
5903 | if (part_die->tag == DW_TAG_compile_unit | |
5904 | && base_address_type < base_address_entry_pc) | |
5905 | { | |
5906 | base_address = DW_ADDR (&attr); | |
5907 | base_address_type = base_address_entry_pc; | |
5908 | } | |
5909 | break; | |
43039443 | 5910 | case DW_AT_ranges: |
ff013f42 JK |
5911 | if (part_die->tag == DW_TAG_compile_unit) |
5912 | { | |
5913 | cu->ranges_offset = DW_UNSND (&attr); | |
5914 | cu->has_ranges_offset = 1; | |
5915 | } | |
43039443 | 5916 | break; |
c906108c | 5917 | case DW_AT_location: |
8e19ed76 PS |
5918 | /* Support the .debug_loc offsets */ |
5919 | if (attr_form_is_block (&attr)) | |
5920 | { | |
5921 | part_die->locdesc = DW_BLOCK (&attr); | |
5922 | } | |
3690dd37 | 5923 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 5924 | { |
4d3c2250 | 5925 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5926 | } |
5927 | else | |
5928 | { | |
4d3c2250 KB |
5929 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5930 | "partial symbol information"); | |
8e19ed76 | 5931 | } |
c906108c SS |
5932 | break; |
5933 | case DW_AT_language: | |
5934 | part_die->language = DW_UNSND (&attr); | |
5935 | break; | |
5936 | case DW_AT_external: | |
5937 | part_die->is_external = DW_UNSND (&attr); | |
5938 | break; | |
5939 | case DW_AT_declaration: | |
5940 | part_die->is_declaration = DW_UNSND (&attr); | |
5941 | break; | |
5942 | case DW_AT_type: | |
5943 | part_die->has_type = 1; | |
5944 | break; | |
5945 | case DW_AT_abstract_origin: | |
5946 | case DW_AT_specification: | |
72bf9492 DJ |
5947 | case DW_AT_extension: |
5948 | part_die->has_specification = 1; | |
5949 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5950 | break; |
5951 | case DW_AT_sibling: | |
5952 | /* Ignore absolute siblings, they might point outside of | |
5953 | the current compile unit. */ | |
5954 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5955 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5956 | else |
6502dd73 DJ |
5957 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5958 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5959 | break; |
aaa75496 JB |
5960 | case DW_AT_stmt_list: |
5961 | part_die->has_stmt_list = 1; | |
5962 | part_die->line_offset = DW_UNSND (&attr); | |
5963 | break; | |
fa4028e9 JB |
5964 | case DW_AT_byte_size: |
5965 | part_die->has_byte_size = 1; | |
5966 | break; | |
68511cec CES |
5967 | case DW_AT_calling_convention: |
5968 | /* DWARF doesn't provide a way to identify a program's source-level | |
5969 | entry point. DW_AT_calling_convention attributes are only meant | |
5970 | to describe functions' calling conventions. | |
5971 | ||
5972 | However, because it's a necessary piece of information in | |
5973 | Fortran, and because DW_CC_program is the only piece of debugging | |
5974 | information whose definition refers to a 'main program' at all, | |
5975 | several compilers have begun marking Fortran main programs with | |
5976 | DW_CC_program --- even when those functions use the standard | |
5977 | calling conventions. | |
5978 | ||
5979 | So until DWARF specifies a way to provide this information and | |
5980 | compilers pick up the new representation, we'll support this | |
5981 | practice. */ | |
5982 | if (DW_UNSND (&attr) == DW_CC_program | |
5983 | && cu->language == language_fortran) | |
5984 | set_main_name (part_die->name); | |
5985 | break; | |
c906108c SS |
5986 | default: |
5987 | break; | |
5988 | } | |
5989 | } | |
5990 | ||
c906108c SS |
5991 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5992 | eliminate duplicate copies of functions and vtables and such. | |
5993 | The linker will arbitrarily choose one and discard the others. | |
5994 | The AT_*_pc values for such functions refer to local labels in | |
5995 | these sections. If the section from that file was discarded, the | |
5996 | labels are not in the output, so the relocs get a value of 0. | |
5997 | If this is a discarded function, mark the pc bounds as invalid, | |
5998 | so that GDB will ignore it. */ | |
5999 | if (has_low_pc_attr && has_high_pc_attr | |
6000 | && part_die->lowpc < part_die->highpc | |
6001 | && (part_die->lowpc != 0 | |
72dca2f5 | 6002 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 6003 | part_die->has_pc_info = 1; |
85cbf3d3 | 6004 | |
d00adf39 | 6005 | if (base_address_type != base_address_none && !cu->base_known) |
85cbf3d3 JK |
6006 | { |
6007 | gdb_assert (part_die->tag == DW_TAG_compile_unit); | |
d00adf39 DE |
6008 | cu->base_known = 1; |
6009 | cu->base_address = base_address; | |
85cbf3d3 JK |
6010 | } |
6011 | ||
c906108c SS |
6012 | return info_ptr; |
6013 | } | |
6014 | ||
72bf9492 DJ |
6015 | /* Find a cached partial DIE at OFFSET in CU. */ |
6016 | ||
6017 | static struct partial_die_info * | |
6018 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
6019 | { | |
6020 | struct partial_die_info *lookup_die = NULL; | |
6021 | struct partial_die_info part_die; | |
6022 | ||
6023 | part_die.offset = offset; | |
6024 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
6025 | ||
72bf9492 DJ |
6026 | return lookup_die; |
6027 | } | |
6028 | ||
6029 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
6030 | ||
6031 | static struct partial_die_info * | |
10b3939b | 6032 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 6033 | { |
5afb4e99 DJ |
6034 | struct dwarf2_per_cu_data *per_cu = NULL; |
6035 | struct partial_die_info *pd = NULL; | |
72bf9492 | 6036 | |
45452591 | 6037 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
6038 | { |
6039 | pd = find_partial_die_in_comp_unit (offset, cu); | |
6040 | if (pd != NULL) | |
6041 | return pd; | |
6042 | } | |
72bf9492 | 6043 | |
ae038cb0 DJ |
6044 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
6045 | ||
ae038cb0 DJ |
6046 | if (per_cu->cu == NULL) |
6047 | { | |
6048 | load_comp_unit (per_cu, cu->objfile); | |
6049 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
6050 | dwarf2_per_objfile->read_in_chain = per_cu; | |
6051 | } | |
6052 | ||
6053 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
6054 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
6055 | ||
6056 | if (pd == NULL && per_cu->load_all_dies == 0) | |
6057 | { | |
6058 | struct cleanup *back_to; | |
6059 | struct partial_die_info comp_unit_die; | |
6060 | struct abbrev_info *abbrev; | |
6061 | unsigned int bytes_read; | |
6062 | char *info_ptr; | |
6063 | ||
6064 | per_cu->load_all_dies = 1; | |
6065 | ||
6066 | /* Re-read the DIEs. */ | |
6067 | back_to = make_cleanup (null_cleanup, 0); | |
6068 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
6069 | { | |
6070 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
6071 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
6072 | } | |
d00adf39 DE |
6073 | info_ptr = (dwarf2_per_objfile->info_buffer |
6074 | + per_cu->cu->header.offset | |
6075 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
6076 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
6077 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
6078 | per_cu->cu->objfile->obfd, info_ptr, | |
6079 | per_cu->cu); | |
6080 | if (comp_unit_die.has_children) | |
6081 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
6082 | do_cleanups (back_to); | |
6083 | ||
6084 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
6085 | } | |
6086 | ||
6087 | if (pd == NULL) | |
6088 | internal_error (__FILE__, __LINE__, | |
6089 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
6090 | offset, bfd_get_filename (cu->objfile->obfd)); | |
6091 | return pd; | |
72bf9492 DJ |
6092 | } |
6093 | ||
6094 | /* Adjust PART_DIE before generating a symbol for it. This function | |
6095 | may set the is_external flag or change the DIE's name. */ | |
6096 | ||
6097 | static void | |
6098 | fixup_partial_die (struct partial_die_info *part_die, | |
6099 | struct dwarf2_cu *cu) | |
6100 | { | |
6101 | /* If we found a reference attribute and the DIE has no name, try | |
6102 | to find a name in the referred to DIE. */ | |
6103 | ||
6104 | if (part_die->name == NULL && part_die->has_specification) | |
6105 | { | |
6106 | struct partial_die_info *spec_die; | |
72bf9492 | 6107 | |
10b3939b | 6108 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 6109 | |
10b3939b | 6110 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
6111 | |
6112 | if (spec_die->name) | |
6113 | { | |
6114 | part_die->name = spec_die->name; | |
6115 | ||
6116 | /* Copy DW_AT_external attribute if it is set. */ | |
6117 | if (spec_die->is_external) | |
6118 | part_die->is_external = spec_die->is_external; | |
6119 | } | |
6120 | } | |
6121 | ||
6122 | /* Set default names for some unnamed DIEs. */ | |
6123 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
6124 | || part_die->tag == DW_TAG_class_type)) | |
6125 | part_die->name = "(anonymous class)"; | |
6126 | ||
6127 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
6128 | part_die->name = "(anonymous namespace)"; | |
6129 | ||
6130 | if (part_die->tag == DW_TAG_structure_type | |
6131 | || part_die->tag == DW_TAG_class_type | |
6132 | || part_die->tag == DW_TAG_union_type) | |
6133 | guess_structure_name (part_die, cu); | |
6134 | } | |
6135 | ||
639d11d3 DC |
6136 | /* Read the die from the .debug_info section buffer. Set DIEP to |
6137 | point to a newly allocated die with its information, except for its | |
6138 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
6139 | whether the die has children or not. */ | |
c906108c | 6140 | |
fe1b8b76 JB |
6141 | static gdb_byte * |
6142 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 6143 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
6144 | { |
6145 | unsigned int abbrev_number, bytes_read, i, offset; | |
6146 | struct abbrev_info *abbrev; | |
6147 | struct die_info *die; | |
6148 | ||
6502dd73 | 6149 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
6150 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6151 | info_ptr += bytes_read; | |
6152 | if (!abbrev_number) | |
6153 | { | |
1d325ec1 | 6154 | *diep = NULL; |
639d11d3 | 6155 | *has_children = 0; |
c906108c SS |
6156 | return info_ptr; |
6157 | } | |
6158 | ||
e7c27a73 | 6159 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
6160 | if (!abbrev) |
6161 | { | |
8a3fe4f8 | 6162 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 6163 | abbrev_number, |
639d11d3 | 6164 | bfd_get_filename (abfd)); |
c906108c | 6165 | } |
b60c80d6 | 6166 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
c906108c SS |
6167 | die->offset = offset; |
6168 | die->tag = abbrev->tag; | |
c906108c | 6169 | die->abbrev = abbrev_number; |
c906108c SS |
6170 | |
6171 | die->num_attrs = abbrev->num_attrs; | |
c906108c SS |
6172 | |
6173 | for (i = 0; i < abbrev->num_attrs; ++i) | |
03dd20cc DJ |
6174 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], |
6175 | abfd, info_ptr, cu); | |
c906108c SS |
6176 | |
6177 | *diep = die; | |
639d11d3 | 6178 | *has_children = abbrev->has_children; |
c906108c SS |
6179 | return info_ptr; |
6180 | } | |
6181 | ||
a8329558 | 6182 | /* Read an attribute value described by an attribute form. */ |
c906108c | 6183 | |
fe1b8b76 | 6184 | static gdb_byte * |
a8329558 | 6185 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 6186 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 6187 | struct dwarf2_cu *cu) |
c906108c | 6188 | { |
e7c27a73 | 6189 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6190 | unsigned int bytes_read; |
6191 | struct dwarf_block *blk; | |
6192 | ||
a8329558 KW |
6193 | attr->form = form; |
6194 | switch (form) | |
c906108c SS |
6195 | { |
6196 | case DW_FORM_addr: | |
6197 | case DW_FORM_ref_addr: | |
e7c27a73 | 6198 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 6199 | info_ptr += bytes_read; |
c906108c SS |
6200 | break; |
6201 | case DW_FORM_block2: | |
7b5a2f43 | 6202 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6203 | blk->size = read_2_bytes (abfd, info_ptr); |
6204 | info_ptr += 2; | |
6205 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6206 | info_ptr += blk->size; | |
6207 | DW_BLOCK (attr) = blk; | |
6208 | break; | |
6209 | case DW_FORM_block4: | |
7b5a2f43 | 6210 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6211 | blk->size = read_4_bytes (abfd, info_ptr); |
6212 | info_ptr += 4; | |
6213 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6214 | info_ptr += blk->size; | |
6215 | DW_BLOCK (attr) = blk; | |
6216 | break; | |
6217 | case DW_FORM_data2: | |
6218 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
6219 | info_ptr += 2; | |
6220 | break; | |
6221 | case DW_FORM_data4: | |
6222 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
6223 | info_ptr += 4; | |
6224 | break; | |
6225 | case DW_FORM_data8: | |
6226 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
6227 | info_ptr += 8; | |
6228 | break; | |
6229 | case DW_FORM_string: | |
6230 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
6231 | info_ptr += bytes_read; | |
6232 | break; | |
4bdf3d34 JJ |
6233 | case DW_FORM_strp: |
6234 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
6235 | &bytes_read); | |
6236 | info_ptr += bytes_read; | |
6237 | break; | |
c906108c | 6238 | case DW_FORM_block: |
7b5a2f43 | 6239 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6240 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6241 | info_ptr += bytes_read; | |
6242 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6243 | info_ptr += blk->size; | |
6244 | DW_BLOCK (attr) = blk; | |
6245 | break; | |
6246 | case DW_FORM_block1: | |
7b5a2f43 | 6247 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6248 | blk->size = read_1_byte (abfd, info_ptr); |
6249 | info_ptr += 1; | |
6250 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6251 | info_ptr += blk->size; | |
6252 | DW_BLOCK (attr) = blk; | |
6253 | break; | |
6254 | case DW_FORM_data1: | |
6255 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6256 | info_ptr += 1; | |
6257 | break; | |
6258 | case DW_FORM_flag: | |
6259 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6260 | info_ptr += 1; | |
6261 | break; | |
6262 | case DW_FORM_sdata: | |
6263 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
6264 | info_ptr += bytes_read; | |
6265 | break; | |
6266 | case DW_FORM_udata: | |
6267 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6268 | info_ptr += bytes_read; | |
6269 | break; | |
6270 | case DW_FORM_ref1: | |
10b3939b | 6271 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
6272 | info_ptr += 1; |
6273 | break; | |
6274 | case DW_FORM_ref2: | |
10b3939b | 6275 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
6276 | info_ptr += 2; |
6277 | break; | |
6278 | case DW_FORM_ref4: | |
10b3939b | 6279 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
6280 | info_ptr += 4; |
6281 | break; | |
613e1657 | 6282 | case DW_FORM_ref8: |
10b3939b | 6283 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
6284 | info_ptr += 8; |
6285 | break; | |
c906108c | 6286 | case DW_FORM_ref_udata: |
10b3939b DJ |
6287 | DW_ADDR (attr) = (cu->header.offset |
6288 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
6289 | info_ptr += bytes_read; |
6290 | break; | |
c906108c | 6291 | case DW_FORM_indirect: |
a8329558 KW |
6292 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6293 | info_ptr += bytes_read; | |
e7c27a73 | 6294 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 6295 | break; |
c906108c | 6296 | default: |
8a3fe4f8 | 6297 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
6298 | dwarf_form_name (form), |
6299 | bfd_get_filename (abfd)); | |
c906108c | 6300 | } |
28e94949 JB |
6301 | |
6302 | /* We have seen instances where the compiler tried to emit a byte | |
6303 | size attribute of -1 which ended up being encoded as an unsigned | |
6304 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
6305 | an object of this size seems pretty unlikely so we can relatively | |
6306 | safely treat these cases as if the size attribute was invalid and | |
6307 | treat them as zero by default. */ | |
6308 | if (attr->name == DW_AT_byte_size | |
6309 | && form == DW_FORM_data4 | |
6310 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
6311 | { |
6312 | complaint | |
6313 | (&symfile_complaints, | |
6314 | _("Suspicious DW_AT_byte_size value treated as zero instead of 0x%lx"), | |
6315 | DW_UNSND (attr)); | |
6316 | DW_UNSND (attr) = 0; | |
6317 | } | |
28e94949 | 6318 | |
c906108c SS |
6319 | return info_ptr; |
6320 | } | |
6321 | ||
a8329558 KW |
6322 | /* Read an attribute described by an abbreviated attribute. */ |
6323 | ||
fe1b8b76 | 6324 | static gdb_byte * |
a8329558 | 6325 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 6326 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
6327 | { |
6328 | attr->name = abbrev->name; | |
e7c27a73 | 6329 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
6330 | } |
6331 | ||
c906108c SS |
6332 | /* read dwarf information from a buffer */ |
6333 | ||
6334 | static unsigned int | |
fe1b8b76 | 6335 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6336 | { |
fe1b8b76 | 6337 | return bfd_get_8 (abfd, buf); |
c906108c SS |
6338 | } |
6339 | ||
6340 | static int | |
fe1b8b76 | 6341 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6342 | { |
fe1b8b76 | 6343 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
6344 | } |
6345 | ||
6346 | static unsigned int | |
fe1b8b76 | 6347 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6348 | { |
fe1b8b76 | 6349 | return bfd_get_16 (abfd, buf); |
c906108c SS |
6350 | } |
6351 | ||
6352 | static int | |
fe1b8b76 | 6353 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6354 | { |
fe1b8b76 | 6355 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
6356 | } |
6357 | ||
6358 | static unsigned int | |
fe1b8b76 | 6359 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6360 | { |
fe1b8b76 | 6361 | return bfd_get_32 (abfd, buf); |
c906108c SS |
6362 | } |
6363 | ||
6364 | static int | |
fe1b8b76 | 6365 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6366 | { |
fe1b8b76 | 6367 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
6368 | } |
6369 | ||
ce5d95e1 | 6370 | static unsigned long |
fe1b8b76 | 6371 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6372 | { |
fe1b8b76 | 6373 | return bfd_get_64 (abfd, buf); |
c906108c SS |
6374 | } |
6375 | ||
6376 | static CORE_ADDR | |
fe1b8b76 | 6377 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 6378 | unsigned int *bytes_read) |
c906108c | 6379 | { |
e7c27a73 | 6380 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6381 | CORE_ADDR retval = 0; |
6382 | ||
107d2387 | 6383 | if (cu_header->signed_addr_p) |
c906108c | 6384 | { |
107d2387 AC |
6385 | switch (cu_header->addr_size) |
6386 | { | |
6387 | case 2: | |
fe1b8b76 | 6388 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
6389 | break; |
6390 | case 4: | |
fe1b8b76 | 6391 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6392 | break; |
6393 | case 8: | |
fe1b8b76 | 6394 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6395 | break; |
6396 | default: | |
8e65ff28 | 6397 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6398 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6399 | bfd_get_filename (abfd)); |
107d2387 AC |
6400 | } |
6401 | } | |
6402 | else | |
6403 | { | |
6404 | switch (cu_header->addr_size) | |
6405 | { | |
6406 | case 2: | |
fe1b8b76 | 6407 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6408 | break; |
6409 | case 4: | |
fe1b8b76 | 6410 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6411 | break; |
6412 | case 8: | |
fe1b8b76 | 6413 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6414 | break; |
6415 | default: | |
8e65ff28 | 6416 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6417 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6418 | bfd_get_filename (abfd)); |
107d2387 | 6419 | } |
c906108c | 6420 | } |
64367e0a | 6421 | |
107d2387 AC |
6422 | *bytes_read = cu_header->addr_size; |
6423 | return retval; | |
c906108c SS |
6424 | } |
6425 | ||
f7ef9339 | 6426 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6427 | specification allows the initial length to take up either 4 bytes |
6428 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6429 | bytes describe the length and all offsets will be 8 bytes in length | |
6430 | instead of 4. | |
6431 | ||
f7ef9339 KB |
6432 | An older, non-standard 64-bit format is also handled by this |
6433 | function. The older format in question stores the initial length | |
6434 | as an 8-byte quantity without an escape value. Lengths greater | |
6435 | than 2^32 aren't very common which means that the initial 4 bytes | |
6436 | is almost always zero. Since a length value of zero doesn't make | |
6437 | sense for the 32-bit format, this initial zero can be considered to | |
6438 | be an escape value which indicates the presence of the older 64-bit | |
6439 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6440 | greater than 4GB. If it becomes necessary to handle lengths |
6441 | somewhat larger than 4GB, we could allow other small values (such | |
6442 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6443 | escape values indicating the presence of the old format. | |
f7ef9339 | 6444 | |
917c78fc MK |
6445 | The value returned via bytes_read should be used to increment the |
6446 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
6447 | |
6448 | As a side effect, this function sets the fields initial_length_size | |
6449 | and offset_size in cu_header to the values appropriate for the | |
6450 | length field. (The format of the initial length field determines | |
dd373385 | 6451 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
6452 | |
6453 | [ Note: read_initial_length() and read_offset() are based on the | |
6454 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6455 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6456 | from: |
6457 | ||
f7ef9339 | 6458 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6459 | |
6460 | This document is only a draft and is subject to change. (So beware.) | |
6461 | ||
f7ef9339 | 6462 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6463 | determined empirically by examining 64-bit ELF files produced by |
6464 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6465 | |
6466 | - Kevin, July 16, 2002 | |
613e1657 KB |
6467 | ] */ |
6468 | ||
6469 | static LONGEST | |
fe1b8b76 | 6470 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 6471 | unsigned int *bytes_read) |
613e1657 | 6472 | { |
fe1b8b76 | 6473 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6474 | |
dd373385 | 6475 | if (length == 0xffffffff) |
613e1657 | 6476 | { |
fe1b8b76 | 6477 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6478 | *bytes_read = 12; |
613e1657 | 6479 | } |
dd373385 | 6480 | else if (length == 0) |
f7ef9339 | 6481 | { |
dd373385 | 6482 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6483 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6484 | *bytes_read = 8; |
f7ef9339 | 6485 | } |
613e1657 KB |
6486 | else |
6487 | { | |
6488 | *bytes_read = 4; | |
613e1657 KB |
6489 | } |
6490 | ||
dd373385 EZ |
6491 | if (cu_header) |
6492 | { | |
6493 | gdb_assert (cu_header->initial_length_size == 0 | |
6494 | || cu_header->initial_length_size == 4 | |
6495 | || cu_header->initial_length_size == 8 | |
6496 | || cu_header->initial_length_size == 12); | |
6497 | ||
6498 | if (cu_header->initial_length_size != 0 | |
6499 | && cu_header->initial_length_size != *bytes_read) | |
6500 | complaint (&symfile_complaints, | |
6501 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6502 | ||
6503 | cu_header->initial_length_size = *bytes_read; | |
6504 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6505 | } | |
6506 | ||
6507 | return length; | |
613e1657 KB |
6508 | } |
6509 | ||
6510 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6511 | given by cu_header->offset_size. */ |
613e1657 KB |
6512 | |
6513 | static LONGEST | |
fe1b8b76 | 6514 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6515 | unsigned int *bytes_read) |
613e1657 KB |
6516 | { |
6517 | LONGEST retval = 0; | |
6518 | ||
6519 | switch (cu_header->offset_size) | |
6520 | { | |
6521 | case 4: | |
fe1b8b76 | 6522 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6523 | *bytes_read = 4; |
6524 | break; | |
6525 | case 8: | |
fe1b8b76 | 6526 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6527 | *bytes_read = 8; |
6528 | break; | |
6529 | default: | |
8e65ff28 | 6530 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6531 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6532 | bfd_get_filename (abfd)); |
613e1657 KB |
6533 | } |
6534 | ||
917c78fc | 6535 | return retval; |
613e1657 KB |
6536 | } |
6537 | ||
fe1b8b76 JB |
6538 | static gdb_byte * |
6539 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6540 | { |
6541 | /* If the size of a host char is 8 bits, we can return a pointer | |
6542 | to the buffer, otherwise we have to copy the data to a buffer | |
6543 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6544 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6545 | return buf; |
c906108c SS |
6546 | } |
6547 | ||
6548 | static char * | |
fe1b8b76 | 6549 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6550 | { |
6551 | /* If the size of a host char is 8 bits, we can return a pointer | |
6552 | to the string, otherwise we have to copy the string to a buffer | |
6553 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6554 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6555 | if (*buf == '\0') |
6556 | { | |
6557 | *bytes_read_ptr = 1; | |
6558 | return NULL; | |
6559 | } | |
fe1b8b76 JB |
6560 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6561 | return (char *) buf; | |
4bdf3d34 JJ |
6562 | } |
6563 | ||
6564 | static char * | |
fe1b8b76 | 6565 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6566 | const struct comp_unit_head *cu_header, |
6567 | unsigned int *bytes_read_ptr) | |
6568 | { | |
6569 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6570 | bytes_read_ptr); |
c906108c | 6571 | |
6502dd73 | 6572 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6573 | { |
8a3fe4f8 | 6574 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6575 | bfd_get_filename (abfd)); |
4bdf3d34 | 6576 | return NULL; |
c906108c | 6577 | } |
6502dd73 | 6578 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6579 | { |
8a3fe4f8 | 6580 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6581 | bfd_get_filename (abfd)); |
c906108c SS |
6582 | return NULL; |
6583 | } | |
4bdf3d34 | 6584 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6585 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6586 | return NULL; |
fe1b8b76 | 6587 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6588 | } |
6589 | ||
ce5d95e1 | 6590 | static unsigned long |
fe1b8b76 | 6591 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6592 | { |
ce5d95e1 JB |
6593 | unsigned long result; |
6594 | unsigned int num_read; | |
c906108c SS |
6595 | int i, shift; |
6596 | unsigned char byte; | |
6597 | ||
6598 | result = 0; | |
6599 | shift = 0; | |
6600 | num_read = 0; | |
6601 | i = 0; | |
6602 | while (1) | |
6603 | { | |
fe1b8b76 | 6604 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6605 | buf++; |
6606 | num_read++; | |
ce5d95e1 | 6607 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6608 | if ((byte & 128) == 0) |
6609 | { | |
6610 | break; | |
6611 | } | |
6612 | shift += 7; | |
6613 | } | |
6614 | *bytes_read_ptr = num_read; | |
6615 | return result; | |
6616 | } | |
6617 | ||
ce5d95e1 | 6618 | static long |
fe1b8b76 | 6619 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6620 | { |
ce5d95e1 | 6621 | long result; |
77e0b926 | 6622 | int i, shift, num_read; |
c906108c SS |
6623 | unsigned char byte; |
6624 | ||
6625 | result = 0; | |
6626 | shift = 0; | |
c906108c SS |
6627 | num_read = 0; |
6628 | i = 0; | |
6629 | while (1) | |
6630 | { | |
fe1b8b76 | 6631 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6632 | buf++; |
6633 | num_read++; | |
ce5d95e1 | 6634 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6635 | shift += 7; |
6636 | if ((byte & 128) == 0) | |
6637 | { | |
6638 | break; | |
6639 | } | |
6640 | } | |
77e0b926 DJ |
6641 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6642 | result |= -(((long)1) << shift); | |
c906108c SS |
6643 | *bytes_read_ptr = num_read; |
6644 | return result; | |
6645 | } | |
6646 | ||
4bb7a0a7 DJ |
6647 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6648 | ||
fe1b8b76 JB |
6649 | static gdb_byte * |
6650 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6651 | { |
6652 | int byte; | |
6653 | ||
6654 | while (1) | |
6655 | { | |
fe1b8b76 | 6656 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6657 | buf++; |
6658 | if ((byte & 128) == 0) | |
6659 | return buf; | |
6660 | } | |
6661 | } | |
6662 | ||
c906108c | 6663 | static void |
e142c38c | 6664 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6665 | { |
6666 | switch (lang) | |
6667 | { | |
6668 | case DW_LANG_C89: | |
6669 | case DW_LANG_C: | |
e142c38c | 6670 | cu->language = language_c; |
c906108c SS |
6671 | break; |
6672 | case DW_LANG_C_plus_plus: | |
e142c38c | 6673 | cu->language = language_cplus; |
c906108c SS |
6674 | break; |
6675 | case DW_LANG_Fortran77: | |
6676 | case DW_LANG_Fortran90: | |
b21b22e0 | 6677 | case DW_LANG_Fortran95: |
e142c38c | 6678 | cu->language = language_fortran; |
c906108c SS |
6679 | break; |
6680 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6681 | cu->language = language_asm; |
c906108c | 6682 | break; |
bebd888e | 6683 | case DW_LANG_Java: |
e142c38c | 6684 | cu->language = language_java; |
bebd888e | 6685 | break; |
c906108c | 6686 | case DW_LANG_Ada83: |
8aaf0b47 | 6687 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6688 | cu->language = language_ada; |
6689 | break; | |
72019c9c GM |
6690 | case DW_LANG_Modula2: |
6691 | cu->language = language_m2; | |
6692 | break; | |
fe8e67fd PM |
6693 | case DW_LANG_Pascal83: |
6694 | cu->language = language_pascal; | |
6695 | break; | |
22566fbd DJ |
6696 | case DW_LANG_ObjC: |
6697 | cu->language = language_objc; | |
6698 | break; | |
c906108c SS |
6699 | case DW_LANG_Cobol74: |
6700 | case DW_LANG_Cobol85: | |
c906108c | 6701 | default: |
e142c38c | 6702 | cu->language = language_minimal; |
c906108c SS |
6703 | break; |
6704 | } | |
e142c38c | 6705 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6706 | } |
6707 | ||
6708 | /* Return the named attribute or NULL if not there. */ | |
6709 | ||
6710 | static struct attribute * | |
e142c38c | 6711 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6712 | { |
6713 | unsigned int i; | |
6714 | struct attribute *spec = NULL; | |
6715 | ||
6716 | for (i = 0; i < die->num_attrs; ++i) | |
6717 | { | |
6718 | if (die->attrs[i].name == name) | |
10b3939b | 6719 | return &die->attrs[i]; |
c906108c SS |
6720 | if (die->attrs[i].name == DW_AT_specification |
6721 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6722 | spec = &die->attrs[i]; | |
6723 | } | |
c906108c | 6724 | |
10b3939b | 6725 | if (spec) |
f2f0e013 DJ |
6726 | { |
6727 | die = follow_die_ref (die, spec, &cu); | |
6728 | return dwarf2_attr (die, name, cu); | |
6729 | } | |
c5aa993b | 6730 | |
c906108c SS |
6731 | return NULL; |
6732 | } | |
6733 | ||
05cf31d1 JB |
6734 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6735 | and holds a non-zero value. This function should only be used for | |
6736 | DW_FORM_flag attributes. */ | |
6737 | ||
6738 | static int | |
6739 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6740 | { | |
6741 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6742 | ||
6743 | return (attr && DW_UNSND (attr)); | |
6744 | } | |
6745 | ||
3ca72b44 | 6746 | static int |
e142c38c | 6747 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6748 | { |
05cf31d1 JB |
6749 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6750 | which value is non-zero. However, we have to be careful with | |
6751 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6752 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6753 | end up accidently finding a declaration attribute that belongs | |
6754 | to a different DIE referenced by the specification attribute, | |
6755 | even though the given DIE does not have a declaration attribute. */ | |
6756 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6757 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6758 | } |
6759 | ||
63d06c5c | 6760 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 DJ |
6761 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
6762 | containing the return value on output. */ | |
63d06c5c DC |
6763 | |
6764 | static struct die_info * | |
f2f0e013 | 6765 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 6766 | { |
f2f0e013 DJ |
6767 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
6768 | *spec_cu); | |
63d06c5c DC |
6769 | |
6770 | if (spec_attr == NULL) | |
6771 | return NULL; | |
6772 | else | |
f2f0e013 | 6773 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 6774 | } |
c906108c | 6775 | |
debd256d JB |
6776 | /* Free the line_header structure *LH, and any arrays and strings it |
6777 | refers to. */ | |
6778 | static void | |
6779 | free_line_header (struct line_header *lh) | |
6780 | { | |
6781 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6782 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6783 | |
6784 | /* Remember that all the lh->file_names[i].name pointers are | |
6785 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6786 | if (lh->file_names) | |
a8bc7b56 | 6787 | xfree (lh->file_names); |
debd256d JB |
6788 | |
6789 | /* Similarly for the include directory names. */ | |
6790 | if (lh->include_dirs) | |
a8bc7b56 | 6791 | xfree (lh->include_dirs); |
debd256d | 6792 | |
a8bc7b56 | 6793 | xfree (lh); |
debd256d JB |
6794 | } |
6795 | ||
6796 | ||
6797 | /* Add an entry to LH's include directory table. */ | |
6798 | static void | |
6799 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6800 | { |
debd256d JB |
6801 | /* Grow the array if necessary. */ |
6802 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6803 | { |
debd256d JB |
6804 | lh->include_dirs_size = 1; /* for testing */ |
6805 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6806 | * sizeof (*lh->include_dirs)); | |
6807 | } | |
6808 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6809 | { | |
6810 | lh->include_dirs_size *= 2; | |
6811 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6812 | (lh->include_dirs_size | |
6813 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6814 | } |
c906108c | 6815 | |
debd256d JB |
6816 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6817 | } | |
6818 | ||
6819 | ||
6820 | /* Add an entry to LH's file name table. */ | |
6821 | static void | |
6822 | add_file_name (struct line_header *lh, | |
6823 | char *name, | |
6824 | unsigned int dir_index, | |
6825 | unsigned int mod_time, | |
6826 | unsigned int length) | |
6827 | { | |
6828 | struct file_entry *fe; | |
6829 | ||
6830 | /* Grow the array if necessary. */ | |
6831 | if (lh->file_names_size == 0) | |
6832 | { | |
6833 | lh->file_names_size = 1; /* for testing */ | |
6834 | lh->file_names = xmalloc (lh->file_names_size | |
6835 | * sizeof (*lh->file_names)); | |
6836 | } | |
6837 | else if (lh->num_file_names >= lh->file_names_size) | |
6838 | { | |
6839 | lh->file_names_size *= 2; | |
6840 | lh->file_names = xrealloc (lh->file_names, | |
6841 | (lh->file_names_size | |
6842 | * sizeof (*lh->file_names))); | |
6843 | } | |
6844 | ||
6845 | fe = &lh->file_names[lh->num_file_names++]; | |
6846 | fe->name = name; | |
6847 | fe->dir_index = dir_index; | |
6848 | fe->mod_time = mod_time; | |
6849 | fe->length = length; | |
aaa75496 | 6850 | fe->included_p = 0; |
cb1df416 | 6851 | fe->symtab = NULL; |
debd256d JB |
6852 | } |
6853 | ||
6854 | ||
6855 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6856 | .debug_line, according to the endianness of ABFD. Return a pointer |
6857 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6858 | |
6859 | NOTE: the strings in the include directory and file name tables of | |
6860 | the returned object point into debug_line_buffer, and must not be | |
6861 | freed. */ | |
6862 | static struct line_header * | |
6863 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6864 | struct dwarf2_cu *cu) |
debd256d JB |
6865 | { |
6866 | struct cleanup *back_to; | |
6867 | struct line_header *lh; | |
fe1b8b76 | 6868 | gdb_byte *line_ptr; |
891d2f0b | 6869 | unsigned int bytes_read; |
debd256d JB |
6870 | int i; |
6871 | char *cur_dir, *cur_file; | |
6872 | ||
6502dd73 | 6873 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6874 | { |
e2e0b3e5 | 6875 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6876 | return 0; |
6877 | } | |
6878 | ||
a738430d MK |
6879 | /* Make sure that at least there's room for the total_length field. |
6880 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6881 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6882 | { |
4d3c2250 | 6883 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6884 | return 0; |
6885 | } | |
6886 | ||
6887 | lh = xmalloc (sizeof (*lh)); | |
6888 | memset (lh, 0, sizeof (*lh)); | |
6889 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6890 | (void *) lh); | |
6891 | ||
6502dd73 | 6892 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6893 | |
a738430d | 6894 | /* Read in the header. */ |
dd373385 EZ |
6895 | lh->total_length = |
6896 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6897 | line_ptr += bytes_read; |
6502dd73 DJ |
6898 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6899 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6900 | { |
4d3c2250 | 6901 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6902 | return 0; |
6903 | } | |
6904 | lh->statement_program_end = line_ptr + lh->total_length; | |
6905 | lh->version = read_2_bytes (abfd, line_ptr); | |
6906 | line_ptr += 2; | |
e7c27a73 | 6907 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6908 | line_ptr += bytes_read; |
6909 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6910 | line_ptr += 1; | |
6911 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6912 | line_ptr += 1; | |
6913 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6914 | line_ptr += 1; | |
6915 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6916 | line_ptr += 1; | |
6917 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6918 | line_ptr += 1; | |
6919 | lh->standard_opcode_lengths | |
fe1b8b76 | 6920 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6921 | |
6922 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6923 | for (i = 1; i < lh->opcode_base; ++i) | |
6924 | { | |
6925 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6926 | line_ptr += 1; | |
6927 | } | |
6928 | ||
a738430d | 6929 | /* Read directory table. */ |
debd256d JB |
6930 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6931 | { | |
6932 | line_ptr += bytes_read; | |
6933 | add_include_dir (lh, cur_dir); | |
6934 | } | |
6935 | line_ptr += bytes_read; | |
6936 | ||
a738430d | 6937 | /* Read file name table. */ |
debd256d JB |
6938 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6939 | { | |
6940 | unsigned int dir_index, mod_time, length; | |
6941 | ||
6942 | line_ptr += bytes_read; | |
6943 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6944 | line_ptr += bytes_read; | |
6945 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6946 | line_ptr += bytes_read; | |
6947 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6948 | line_ptr += bytes_read; | |
6949 | ||
6950 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6951 | } | |
6952 | line_ptr += bytes_read; | |
6953 | lh->statement_program_start = line_ptr; | |
6954 | ||
6502dd73 DJ |
6955 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6956 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6957 | complaint (&symfile_complaints, |
e2e0b3e5 | 6958 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6959 | |
6960 | discard_cleanups (back_to); | |
6961 | return lh; | |
6962 | } | |
c906108c | 6963 | |
5fb290d7 DJ |
6964 | /* This function exists to work around a bug in certain compilers |
6965 | (particularly GCC 2.95), in which the first line number marker of a | |
6966 | function does not show up until after the prologue, right before | |
6967 | the second line number marker. This function shifts ADDRESS down | |
6968 | to the beginning of the function if necessary, and is called on | |
6969 | addresses passed to record_line. */ | |
6970 | ||
6971 | static CORE_ADDR | |
e142c38c | 6972 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6973 | { |
6974 | struct function_range *fn; | |
6975 | ||
6976 | /* Find the function_range containing address. */ | |
e142c38c | 6977 | if (!cu->first_fn) |
5fb290d7 DJ |
6978 | return address; |
6979 | ||
e142c38c DJ |
6980 | if (!cu->cached_fn) |
6981 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6982 | |
e142c38c | 6983 | fn = cu->cached_fn; |
5fb290d7 DJ |
6984 | while (fn) |
6985 | if (fn->lowpc <= address && fn->highpc > address) | |
6986 | goto found; | |
6987 | else | |
6988 | fn = fn->next; | |
6989 | ||
e142c38c DJ |
6990 | fn = cu->first_fn; |
6991 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6992 | if (fn->lowpc <= address && fn->highpc > address) |
6993 | goto found; | |
6994 | else | |
6995 | fn = fn->next; | |
6996 | ||
6997 | return address; | |
6998 | ||
6999 | found: | |
7000 | if (fn->seen_line) | |
7001 | return address; | |
7002 | if (address != fn->lowpc) | |
4d3c2250 | 7003 | complaint (&symfile_complaints, |
e2e0b3e5 | 7004 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 7005 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
7006 | fn->seen_line = 1; |
7007 | return fn->lowpc; | |
7008 | } | |
7009 | ||
aaa75496 JB |
7010 | /* Decode the Line Number Program (LNP) for the given line_header |
7011 | structure and CU. The actual information extracted and the type | |
7012 | of structures created from the LNP depends on the value of PST. | |
7013 | ||
7014 | 1. If PST is NULL, then this procedure uses the data from the program | |
7015 | to create all necessary symbol tables, and their linetables. | |
7016 | The compilation directory of the file is passed in COMP_DIR, | |
7017 | and must not be NULL. | |
7018 | ||
7019 | 2. If PST is not NULL, this procedure reads the program to determine | |
7020 | the list of files included by the unit represented by PST, and | |
7021 | builds all the associated partial symbol tables. In this case, | |
7022 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
7023 | is not used to compute the full name of the symtab, and therefore | |
7024 | omitting it when building the partial symtab does not introduce | |
7025 | the potential for inconsistency - a partial symtab and its associated | |
7026 | symbtab having a different fullname -). */ | |
debd256d | 7027 | |
c906108c | 7028 | static void |
debd256d | 7029 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 7030 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 7031 | { |
a8c50c1f | 7032 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 7033 | gdb_byte *line_end; |
a8c50c1f | 7034 | unsigned int bytes_read, extended_len; |
c906108c | 7035 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
7036 | CORE_ADDR baseaddr; |
7037 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 7038 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 7039 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
7040 | |
7041 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7042 | |
debd256d JB |
7043 | line_ptr = lh->statement_program_start; |
7044 | line_end = lh->statement_program_end; | |
c906108c SS |
7045 | |
7046 | /* Read the statement sequences until there's nothing left. */ | |
7047 | while (line_ptr < line_end) | |
7048 | { | |
7049 | /* state machine registers */ | |
7050 | CORE_ADDR address = 0; | |
7051 | unsigned int file = 1; | |
7052 | unsigned int line = 1; | |
7053 | unsigned int column = 0; | |
debd256d | 7054 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
7055 | int basic_block = 0; |
7056 | int end_sequence = 0; | |
7057 | ||
aaa75496 | 7058 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 7059 | { |
aaa75496 | 7060 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
7061 | /* lh->include_dirs and lh->file_names are 0-based, but the |
7062 | directory and file name numbers in the statement program | |
7063 | are 1-based. */ | |
7064 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 7065 | char *dir = NULL; |
a738430d | 7066 | |
debd256d JB |
7067 | if (fe->dir_index) |
7068 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
7069 | |
7070 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
7071 | } |
7072 | ||
a738430d | 7073 | /* Decode the table. */ |
c5aa993b | 7074 | while (!end_sequence) |
c906108c SS |
7075 | { |
7076 | op_code = read_1_byte (abfd, line_ptr); | |
7077 | line_ptr += 1; | |
9aa1fe7e | 7078 | |
debd256d | 7079 | if (op_code >= lh->opcode_base) |
a738430d MK |
7080 | { |
7081 | /* Special operand. */ | |
debd256d JB |
7082 | adj_opcode = op_code - lh->opcode_base; |
7083 | address += (adj_opcode / lh->line_range) | |
7084 | * lh->minimum_instruction_length; | |
7085 | line += lh->line_base + (adj_opcode % lh->line_range); | |
25e43795 DJ |
7086 | if (lh->num_file_names < file) |
7087 | dwarf2_debug_line_missing_file_complaint (); | |
7088 | else | |
7089 | { | |
7090 | lh->file_names[file - 1].included_p = 1; | |
7091 | if (!decode_for_pst_p) | |
7092 | { | |
7093 | if (last_subfile != current_subfile) | |
7094 | { | |
7095 | if (last_subfile) | |
7096 | record_line (last_subfile, 0, address); | |
7097 | last_subfile = current_subfile; | |
7098 | } | |
7099 | /* Append row to matrix using current values. */ | |
7100 | record_line (current_subfile, line, | |
7101 | check_cu_functions (address, cu)); | |
366da635 | 7102 | } |
25e43795 | 7103 | } |
9aa1fe7e GK |
7104 | basic_block = 1; |
7105 | } | |
7106 | else switch (op_code) | |
c906108c SS |
7107 | { |
7108 | case DW_LNS_extended_op: | |
a8c50c1f | 7109 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 7110 | line_ptr += bytes_read; |
a8c50c1f | 7111 | extended_end = line_ptr + extended_len; |
c906108c SS |
7112 | extended_op = read_1_byte (abfd, line_ptr); |
7113 | line_ptr += 1; | |
7114 | switch (extended_op) | |
7115 | { | |
7116 | case DW_LNE_end_sequence: | |
7117 | end_sequence = 1; | |
25e43795 DJ |
7118 | |
7119 | if (lh->num_file_names < file) | |
7120 | dwarf2_debug_line_missing_file_complaint (); | |
7121 | else | |
7122 | { | |
7123 | lh->file_names[file - 1].included_p = 1; | |
7124 | if (!decode_for_pst_p) | |
7125 | record_line (current_subfile, 0, address); | |
7126 | } | |
c906108c SS |
7127 | break; |
7128 | case DW_LNE_set_address: | |
e7c27a73 | 7129 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
7130 | line_ptr += bytes_read; |
7131 | address += baseaddr; | |
c906108c SS |
7132 | break; |
7133 | case DW_LNE_define_file: | |
debd256d JB |
7134 | { |
7135 | char *cur_file; | |
7136 | unsigned int dir_index, mod_time, length; | |
7137 | ||
7138 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
7139 | line_ptr += bytes_read; | |
7140 | dir_index = | |
7141 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7142 | line_ptr += bytes_read; | |
7143 | mod_time = | |
7144 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7145 | line_ptr += bytes_read; | |
7146 | length = | |
7147 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7148 | line_ptr += bytes_read; | |
7149 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
7150 | } | |
c906108c SS |
7151 | break; |
7152 | default: | |
4d3c2250 | 7153 | complaint (&symfile_complaints, |
e2e0b3e5 | 7154 | _("mangled .debug_line section")); |
debd256d | 7155 | return; |
c906108c | 7156 | } |
a8c50c1f DJ |
7157 | /* Make sure that we parsed the extended op correctly. If e.g. |
7158 | we expected a different address size than the producer used, | |
7159 | we may have read the wrong number of bytes. */ | |
7160 | if (line_ptr != extended_end) | |
7161 | { | |
7162 | complaint (&symfile_complaints, | |
7163 | _("mangled .debug_line section")); | |
7164 | return; | |
7165 | } | |
c906108c SS |
7166 | break; |
7167 | case DW_LNS_copy: | |
25e43795 DJ |
7168 | if (lh->num_file_names < file) |
7169 | dwarf2_debug_line_missing_file_complaint (); | |
7170 | else | |
366da635 | 7171 | { |
25e43795 DJ |
7172 | lh->file_names[file - 1].included_p = 1; |
7173 | if (!decode_for_pst_p) | |
7174 | { | |
7175 | if (last_subfile != current_subfile) | |
7176 | { | |
7177 | if (last_subfile) | |
7178 | record_line (last_subfile, 0, address); | |
7179 | last_subfile = current_subfile; | |
7180 | } | |
7181 | record_line (current_subfile, line, | |
7182 | check_cu_functions (address, cu)); | |
7183 | } | |
366da635 | 7184 | } |
c906108c SS |
7185 | basic_block = 0; |
7186 | break; | |
7187 | case DW_LNS_advance_pc: | |
debd256d | 7188 | address += lh->minimum_instruction_length |
c906108c SS |
7189 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
7190 | line_ptr += bytes_read; | |
7191 | break; | |
7192 | case DW_LNS_advance_line: | |
7193 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
7194 | line_ptr += bytes_read; | |
7195 | break; | |
7196 | case DW_LNS_set_file: | |
debd256d | 7197 | { |
a738430d MK |
7198 | /* The arrays lh->include_dirs and lh->file_names are |
7199 | 0-based, but the directory and file name numbers in | |
7200 | the statement program are 1-based. */ | |
debd256d | 7201 | struct file_entry *fe; |
4f1520fb | 7202 | char *dir = NULL; |
a738430d | 7203 | |
debd256d JB |
7204 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
7205 | line_ptr += bytes_read; | |
25e43795 DJ |
7206 | if (lh->num_file_names < file) |
7207 | dwarf2_debug_line_missing_file_complaint (); | |
7208 | else | |
7209 | { | |
7210 | fe = &lh->file_names[file - 1]; | |
7211 | if (fe->dir_index) | |
7212 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7213 | if (!decode_for_pst_p) | |
7214 | { | |
7215 | last_subfile = current_subfile; | |
7216 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7217 | } | |
7218 | } | |
debd256d | 7219 | } |
c906108c SS |
7220 | break; |
7221 | case DW_LNS_set_column: | |
7222 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7223 | line_ptr += bytes_read; | |
7224 | break; | |
7225 | case DW_LNS_negate_stmt: | |
7226 | is_stmt = (!is_stmt); | |
7227 | break; | |
7228 | case DW_LNS_set_basic_block: | |
7229 | basic_block = 1; | |
7230 | break; | |
c2c6d25f JM |
7231 | /* Add to the address register of the state machine the |
7232 | address increment value corresponding to special opcode | |
a738430d MK |
7233 | 255. I.e., this value is scaled by the minimum |
7234 | instruction length since special opcode 255 would have | |
7235 | scaled the the increment. */ | |
c906108c | 7236 | case DW_LNS_const_add_pc: |
debd256d JB |
7237 | address += (lh->minimum_instruction_length |
7238 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
7239 | break; |
7240 | case DW_LNS_fixed_advance_pc: | |
7241 | address += read_2_bytes (abfd, line_ptr); | |
7242 | line_ptr += 2; | |
7243 | break; | |
9aa1fe7e | 7244 | default: |
a738430d MK |
7245 | { |
7246 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 7247 | int i; |
a738430d | 7248 | |
debd256d | 7249 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
7250 | { |
7251 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7252 | line_ptr += bytes_read; | |
7253 | } | |
7254 | } | |
c906108c SS |
7255 | } |
7256 | } | |
7257 | } | |
aaa75496 JB |
7258 | |
7259 | if (decode_for_pst_p) | |
7260 | { | |
7261 | int file_index; | |
7262 | ||
7263 | /* Now that we're done scanning the Line Header Program, we can | |
7264 | create the psymtab of each included file. */ | |
7265 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
7266 | if (lh->file_names[file_index].included_p == 1) | |
7267 | { | |
5b5464ad JB |
7268 | const struct file_entry fe = lh->file_names [file_index]; |
7269 | char *include_name = fe.name; | |
7270 | char *dir_name = NULL; | |
7271 | char *pst_filename = pst->filename; | |
7272 | ||
7273 | if (fe.dir_index) | |
7274 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
7275 | ||
7276 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
7277 | { | |
1754f103 MK |
7278 | include_name = concat (dir_name, SLASH_STRING, |
7279 | include_name, (char *)NULL); | |
5b5464ad JB |
7280 | make_cleanup (xfree, include_name); |
7281 | } | |
7282 | ||
7283 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
7284 | { | |
1754f103 MK |
7285 | pst_filename = concat (pst->dirname, SLASH_STRING, |
7286 | pst_filename, (char *)NULL); | |
5b5464ad JB |
7287 | make_cleanup (xfree, pst_filename); |
7288 | } | |
7289 | ||
7290 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
7291 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
7292 | } | |
7293 | } | |
cb1df416 DJ |
7294 | else |
7295 | { | |
7296 | /* Make sure a symtab is created for every file, even files | |
7297 | which contain only variables (i.e. no code with associated | |
7298 | line numbers). */ | |
7299 | ||
7300 | int i; | |
7301 | struct file_entry *fe; | |
7302 | ||
7303 | for (i = 0; i < lh->num_file_names; i++) | |
7304 | { | |
7305 | char *dir = NULL; | |
7306 | fe = &lh->file_names[i]; | |
7307 | if (fe->dir_index) | |
7308 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7309 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7310 | ||
7311 | /* Skip the main file; we don't need it, and it must be | |
7312 | allocated last, so that it will show up before the | |
7313 | non-primary symtabs in the objfile's symtab list. */ | |
7314 | if (current_subfile == first_subfile) | |
7315 | continue; | |
7316 | ||
7317 | if (current_subfile->symtab == NULL) | |
7318 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7319 | cu->objfile); | |
7320 | fe->symtab = current_subfile->symtab; | |
7321 | } | |
7322 | } | |
c906108c SS |
7323 | } |
7324 | ||
7325 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
7326 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
7327 | or NULL if not known. COMP_DIR is the compilation directory for the |
7328 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
7329 | This routine tries to keep line numbers from identical absolute and |
7330 | relative file names in a common subfile. | |
7331 | ||
7332 | Using the `list' example from the GDB testsuite, which resides in | |
7333 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
7334 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
7335 | ||
c5aa993b JM |
7336 | DW_AT_name: /srcdir/list0.c |
7337 | DW_AT_comp_dir: /compdir | |
357e46e7 | 7338 | files.files[0].name: list0.h |
c5aa993b | 7339 | files.files[0].dir: /srcdir |
357e46e7 | 7340 | files.files[1].name: list0.c |
c5aa993b | 7341 | files.files[1].dir: /srcdir |
c906108c SS |
7342 | |
7343 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
7344 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
7345 | start_subfile will ensure that this happens provided that we pass the | |
7346 | concatenation of files.files[1].dir and files.files[1].name as the | |
7347 | subfile's name. */ | |
c906108c SS |
7348 | |
7349 | static void | |
4f1520fb | 7350 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 7351 | { |
4f1520fb FR |
7352 | char *fullname; |
7353 | ||
7354 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
7355 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
7356 | second argument to start_subfile. To be consistent, we do the | |
7357 | same here. In order not to lose the line information directory, | |
7358 | we concatenate it to the filename when it makes sense. | |
7359 | Note that the Dwarf3 standard says (speaking of filenames in line | |
7360 | information): ``The directory index is ignored for file names | |
7361 | that represent full path names''. Thus ignoring dirname in the | |
7362 | `else' branch below isn't an issue. */ | |
c906108c | 7363 | |
d5166ae1 | 7364 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
7365 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
7366 | else | |
7367 | fullname = filename; | |
c906108c | 7368 | |
4f1520fb FR |
7369 | start_subfile (fullname, comp_dir); |
7370 | ||
7371 | if (fullname != filename) | |
7372 | xfree (fullname); | |
c906108c SS |
7373 | } |
7374 | ||
4c2df51b DJ |
7375 | static void |
7376 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 7377 | struct dwarf2_cu *cu) |
4c2df51b | 7378 | { |
e7c27a73 DJ |
7379 | struct objfile *objfile = cu->objfile; |
7380 | struct comp_unit_head *cu_header = &cu->header; | |
7381 | ||
4c2df51b DJ |
7382 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
7383 | code here to turn a symbol with DW_AT_external and a | |
7384 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
7385 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
7386 | with some versions of binutils) where shared libraries could have | |
7387 | relocations against symbols in their debug information - the | |
7388 | minimal symbol would have the right address, but the debug info | |
7389 | would not. It's no longer necessary, because we will explicitly | |
7390 | apply relocations when we read in the debug information now. */ | |
7391 | ||
7392 | /* A DW_AT_location attribute with no contents indicates that a | |
7393 | variable has been optimized away. */ | |
7394 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
7395 | { | |
7396 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
7397 | return; | |
7398 | } | |
7399 | ||
7400 | /* Handle one degenerate form of location expression specially, to | |
7401 | preserve GDB's previous behavior when section offsets are | |
7402 | specified. If this is just a DW_OP_addr then mark this symbol | |
7403 | as LOC_STATIC. */ | |
7404 | ||
7405 | if (attr_form_is_block (attr) | |
7406 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
7407 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
7408 | { | |
891d2f0b | 7409 | unsigned int dummy; |
4c2df51b DJ |
7410 | |
7411 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 7412 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 7413 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
7414 | fixup_symbol_section (sym, objfile); |
7415 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
7416 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
7417 | return; |
7418 | } | |
7419 | ||
7420 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
7421 | expression evaluator, and use LOC_COMPUTED only when necessary | |
7422 | (i.e. when the value of a register or memory location is | |
7423 | referenced, or a thread-local block, etc.). Then again, it might | |
7424 | not be worthwhile. I'm assuming that it isn't unless performance | |
7425 | or memory numbers show me otherwise. */ | |
7426 | ||
e7c27a73 | 7427 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
7428 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
7429 | } | |
7430 | ||
c906108c SS |
7431 | /* Given a pointer to a DWARF information entry, figure out if we need |
7432 | to make a symbol table entry for it, and if so, create a new entry | |
7433 | and return a pointer to it. | |
7434 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 7435 | used the passed type. */ |
c906108c SS |
7436 | |
7437 | static struct symbol * | |
e7c27a73 | 7438 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 7439 | { |
e7c27a73 | 7440 | struct objfile *objfile = cu->objfile; |
5e2b427d | 7441 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7442 | struct symbol *sym = NULL; |
7443 | char *name; | |
7444 | struct attribute *attr = NULL; | |
7445 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
7446 | CORE_ADDR baseaddr; |
7447 | ||
7448 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7449 | |
5c4e30ca | 7450 | if (die->tag != DW_TAG_namespace) |
e142c38c | 7451 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
7452 | else |
7453 | name = TYPE_NAME (type); | |
7454 | ||
c906108c SS |
7455 | if (name) |
7456 | { | |
4a146b47 | 7457 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
7458 | sizeof (struct symbol)); |
7459 | OBJSTAT (objfile, n_syms++); | |
7460 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7461 | |
7462 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7463 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7464 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7465 | |
7466 | /* Default assumptions. | |
c5aa993b | 7467 | Use the passed type or decode it from the die. */ |
176620f1 | 7468 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7469 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7470 | if (type != NULL) |
7471 | SYMBOL_TYPE (sym) = type; | |
7472 | else | |
e7c27a73 | 7473 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7474 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7475 | if (attr) |
7476 | { | |
7477 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7478 | } | |
cb1df416 DJ |
7479 | |
7480 | attr = dwarf2_attr (die, DW_AT_decl_file, cu); | |
7481 | if (attr) | |
7482 | { | |
7483 | int file_index = DW_UNSND (attr); | |
7484 | if (cu->line_header == NULL | |
7485 | || file_index > cu->line_header->num_file_names) | |
7486 | complaint (&symfile_complaints, | |
7487 | _("file index out of range")); | |
1c3d648d | 7488 | else if (file_index > 0) |
cb1df416 DJ |
7489 | { |
7490 | struct file_entry *fe; | |
7491 | fe = &cu->line_header->file_names[file_index - 1]; | |
7492 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
7493 | } | |
7494 | } | |
7495 | ||
c906108c SS |
7496 | switch (die->tag) |
7497 | { | |
7498 | case DW_TAG_label: | |
e142c38c | 7499 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7500 | if (attr) |
7501 | { | |
7502 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7503 | } | |
7504 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7505 | break; | |
7506 | case DW_TAG_subprogram: | |
7507 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7508 | finish_block. */ | |
7509 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7510 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
7511 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
7512 | || cu->language == language_ada) | |
c906108c | 7513 | { |
2cfa0c8d JB |
7514 | /* Subprograms marked external are stored as a global symbol. |
7515 | Ada subprograms, whether marked external or not, are always | |
7516 | stored as a global symbol, because we want to be able to | |
7517 | access them globally. For instance, we want to be able | |
7518 | to break on a nested subprogram without having to | |
7519 | specify the context. */ | |
c906108c SS |
7520 | add_symbol_to_list (sym, &global_symbols); |
7521 | } | |
7522 | else | |
7523 | { | |
e142c38c | 7524 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7525 | } |
7526 | break; | |
7527 | case DW_TAG_variable: | |
7528 | /* Compilation with minimal debug info may result in variables | |
7529 | with missing type entries. Change the misleading `void' type | |
7530 | to something sensible. */ | |
7531 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 7532 | SYMBOL_TYPE (sym) |
5e2b427d | 7533 | = builtin_type (gdbarch)->nodebug_data_symbol; |
64c50499 | 7534 | |
e142c38c | 7535 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7536 | if (attr) |
7537 | { | |
e7c27a73 | 7538 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7539 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7540 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7541 | add_symbol_to_list (sym, &global_symbols); | |
7542 | else | |
e142c38c | 7543 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7544 | break; |
7545 | } | |
e142c38c | 7546 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7547 | if (attr) |
7548 | { | |
e7c27a73 | 7549 | var_decode_location (attr, sym, cu); |
e142c38c | 7550 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7551 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7552 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7553 | else |
e142c38c | 7554 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7555 | } |
7556 | else | |
7557 | { | |
7558 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7559 | If it is an external symbol and we have type information |
7560 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7561 | The address of the variable will then be determined from | |
7562 | the minimal symbol table whenever the variable is | |
7563 | referenced. */ | |
e142c38c | 7564 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7565 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7566 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7567 | { |
7568 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7569 | add_symbol_to_list (sym, &global_symbols); | |
7570 | } | |
7571 | } | |
7572 | break; | |
7573 | case DW_TAG_formal_parameter: | |
2a2d4dc3 | 7574 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e142c38c | 7575 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7576 | if (attr) |
7577 | { | |
e7c27a73 | 7578 | var_decode_location (attr, sym, cu); |
c906108c | 7579 | } |
e142c38c | 7580 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7581 | if (attr) |
7582 | { | |
e7c27a73 | 7583 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7584 | } |
e142c38c | 7585 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7586 | break; |
7587 | case DW_TAG_unspecified_parameters: | |
7588 | /* From varargs functions; gdb doesn't seem to have any | |
7589 | interest in this information, so just ignore it for now. | |
7590 | (FIXME?) */ | |
7591 | break; | |
7592 | case DW_TAG_class_type: | |
680b30c7 | 7593 | case DW_TAG_interface_type: |
c906108c SS |
7594 | case DW_TAG_structure_type: |
7595 | case DW_TAG_union_type: | |
72019c9c | 7596 | case DW_TAG_set_type: |
c906108c SS |
7597 | case DW_TAG_enumeration_type: |
7598 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7599 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7600 | |
63d06c5c DC |
7601 | /* Make sure that the symbol includes appropriate enclosing |
7602 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7603 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7604 | the type. */ |
7605 | ||
987504bb JJ |
7606 | if (cu->language == language_cplus |
7607 | || cu->language == language_java) | |
c906108c | 7608 | { |
63d06c5c DC |
7609 | struct type *type = SYMBOL_TYPE (sym); |
7610 | ||
7611 | if (TYPE_TAG_NAME (type) != NULL) | |
7612 | { | |
7613 | /* FIXME: carlton/2003-11-10: Should this use | |
7614 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7615 | arises further down in this function.) */ |
7616 | /* The type's name is already allocated along with | |
7617 | this objfile, so we don't need to duplicate it | |
7618 | for the symbol. */ | |
7619 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7620 | } |
c906108c | 7621 | } |
63d06c5c DC |
7622 | |
7623 | { | |
987504bb | 7624 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7625 | really ever be static objects: otherwise, if you try |
7626 | to, say, break of a class's method and you're in a file | |
7627 | which doesn't mention that class, it won't work unless | |
7628 | the check for all static symbols in lookup_symbol_aux | |
7629 | saves you. See the OtherFileClass tests in | |
7630 | gdb.c++/namespace.exp. */ | |
7631 | ||
7632 | struct pending **list_to_add; | |
7633 | ||
e142c38c | 7634 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7635 | && (cu->language == language_cplus |
7636 | || cu->language == language_java) | |
e142c38c | 7637 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7638 | |
7639 | add_symbol_to_list (sym, list_to_add); | |
7640 | ||
7641 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb | 7642 | defines a typedef for "foo". A Java class declaration also |
5eeb2539 | 7643 | defines a typedef for the class. */ |
987504bb | 7644 | if (cu->language == language_cplus |
8c6860bb JB |
7645 | || cu->language == language_java |
7646 | || cu->language == language_ada) | |
63d06c5c | 7647 | { |
d8151005 DJ |
7648 | /* The symbol's name is already allocated along with |
7649 | this objfile, so we don't need to duplicate it for | |
7650 | the type. */ | |
63d06c5c | 7651 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7652 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7653 | } |
7654 | } | |
c906108c SS |
7655 | break; |
7656 | case DW_TAG_typedef: | |
0114d602 | 7657 | SYMBOL_LINKAGE_NAME (sym) = (char *) dwarf2_full_name (die, cu); |
63d06c5c DC |
7658 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
7659 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7660 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7661 | break; |
c906108c | 7662 | case DW_TAG_base_type: |
a02abb62 | 7663 | case DW_TAG_subrange_type: |
c906108c | 7664 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7665 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7666 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7667 | break; |
7668 | case DW_TAG_enumerator: | |
0114d602 | 7669 | SYMBOL_LINKAGE_NAME (sym) = (char *) dwarf2_full_name (die, cu); |
e142c38c | 7670 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7671 | if (attr) |
7672 | { | |
e7c27a73 | 7673 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7674 | } |
63d06c5c DC |
7675 | { |
7676 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7677 | DW_TAG_class_type, etc. block. */ | |
7678 | ||
7679 | struct pending **list_to_add; | |
7680 | ||
e142c38c | 7681 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7682 | && (cu->language == language_cplus |
7683 | || cu->language == language_java) | |
e142c38c | 7684 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7685 | |
7686 | add_symbol_to_list (sym, list_to_add); | |
7687 | } | |
c906108c | 7688 | break; |
5c4e30ca DC |
7689 | case DW_TAG_namespace: |
7690 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7691 | add_symbol_to_list (sym, &global_symbols); | |
7692 | break; | |
c906108c SS |
7693 | default: |
7694 | /* Not a tag we recognize. Hopefully we aren't processing | |
7695 | trash data, but since we must specifically ignore things | |
7696 | we don't recognize, there is nothing else we should do at | |
7697 | this point. */ | |
e2e0b3e5 | 7698 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7699 | dwarf_tag_name (die->tag)); |
c906108c SS |
7700 | break; |
7701 | } | |
df8a16a1 DJ |
7702 | |
7703 | /* For the benefit of old versions of GCC, check for anonymous | |
7704 | namespaces based on the demangled name. */ | |
7705 | if (!processing_has_namespace_info | |
7706 | && cu->language == language_cplus | |
7707 | && dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu) != NULL) | |
7708 | cp_scan_for_anonymous_namespaces (sym); | |
c906108c SS |
7709 | } |
7710 | return (sym); | |
7711 | } | |
7712 | ||
7713 | /* Copy constant value from an attribute to a symbol. */ | |
7714 | ||
7715 | static void | |
107d2387 | 7716 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7717 | struct dwarf2_cu *cu) |
c906108c | 7718 | { |
e7c27a73 DJ |
7719 | struct objfile *objfile = cu->objfile; |
7720 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7721 | struct dwarf_block *blk; |
7722 | ||
7723 | switch (attr->form) | |
7724 | { | |
7725 | case DW_FORM_addr: | |
107d2387 | 7726 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
3567439c | 7727 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
7728 | cu_header->addr_size, |
7729 | TYPE_LENGTH (SYMBOL_TYPE | |
7730 | (sym))); | |
4e38b386 | 7731 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7732 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7733 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7734 | it's body - store_unsigned_integer. */ | |
7735 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7736 | DW_ADDR (attr)); | |
c906108c SS |
7737 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7738 | break; | |
93b5768b PA |
7739 | case DW_FORM_strp: |
7740 | /* DW_STRING is already allocated on the obstack, point directly | |
7741 | to it. */ | |
7742 | SYMBOL_VALUE_BYTES (sym) = (gdb_byte *) DW_STRING (attr); | |
7743 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7744 | break; | |
c906108c SS |
7745 | case DW_FORM_block1: |
7746 | case DW_FORM_block2: | |
7747 | case DW_FORM_block4: | |
7748 | case DW_FORM_block: | |
7749 | blk = DW_BLOCK (attr); | |
7750 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
3567439c | 7751 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
7752 | blk->size, |
7753 | TYPE_LENGTH (SYMBOL_TYPE | |
7754 | (sym))); | |
4e38b386 | 7755 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7756 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7757 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7758 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7759 | break; | |
2df3850c JM |
7760 | |
7761 | /* The DW_AT_const_value attributes are supposed to carry the | |
7762 | symbol's value "represented as it would be on the target | |
7763 | architecture." By the time we get here, it's already been | |
7764 | converted to host endianness, so we just need to sign- or | |
7765 | zero-extend it as appropriate. */ | |
7766 | case DW_FORM_data1: | |
7767 | dwarf2_const_value_data (attr, sym, 8); | |
7768 | break; | |
c906108c | 7769 | case DW_FORM_data2: |
2df3850c JM |
7770 | dwarf2_const_value_data (attr, sym, 16); |
7771 | break; | |
c906108c | 7772 | case DW_FORM_data4: |
2df3850c JM |
7773 | dwarf2_const_value_data (attr, sym, 32); |
7774 | break; | |
c906108c | 7775 | case DW_FORM_data8: |
2df3850c JM |
7776 | dwarf2_const_value_data (attr, sym, 64); |
7777 | break; | |
7778 | ||
c906108c | 7779 | case DW_FORM_sdata: |
2df3850c JM |
7780 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7781 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7782 | break; | |
7783 | ||
c906108c SS |
7784 | case DW_FORM_udata: |
7785 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7786 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7787 | break; | |
2df3850c | 7788 | |
c906108c | 7789 | default: |
4d3c2250 | 7790 | complaint (&symfile_complaints, |
e2e0b3e5 | 7791 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7792 | dwarf_form_name (attr->form)); |
c906108c SS |
7793 | SYMBOL_VALUE (sym) = 0; |
7794 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7795 | break; | |
7796 | } | |
7797 | } | |
7798 | ||
2df3850c JM |
7799 | |
7800 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7801 | or zero-extend it as appropriate for the symbol's type. */ | |
7802 | static void | |
7803 | dwarf2_const_value_data (struct attribute *attr, | |
7804 | struct symbol *sym, | |
7805 | int bits) | |
7806 | { | |
7807 | LONGEST l = DW_UNSND (attr); | |
7808 | ||
7809 | if (bits < sizeof (l) * 8) | |
7810 | { | |
7811 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7812 | l &= ((LONGEST) 1 << bits) - 1; | |
7813 | else | |
bf9198f1 | 7814 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7815 | } |
7816 | ||
7817 | SYMBOL_VALUE (sym) = l; | |
7818 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7819 | } | |
7820 | ||
7821 | ||
c906108c SS |
7822 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7823 | ||
7824 | static struct type * | |
e7c27a73 | 7825 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7826 | { |
5e2b427d | 7827 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
c906108c SS |
7828 | struct type *type; |
7829 | struct attribute *type_attr; | |
7830 | struct die_info *type_die; | |
c906108c | 7831 | |
e142c38c | 7832 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7833 | if (!type_attr) |
7834 | { | |
7835 | /* A missing DW_AT_type represents a void type. */ | |
5e2b427d | 7836 | return builtin_type (gdbarch)->builtin_void; |
c906108c SS |
7837 | } |
7838 | else | |
f2f0e013 | 7839 | type_die = follow_die_ref (die, type_attr, &cu); |
10b3939b | 7840 | |
e7c27a73 | 7841 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7842 | if (!type) |
7843 | { | |
d97bc12b | 7844 | dump_die_for_error (type_die); |
8a3fe4f8 | 7845 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7846 | cu->objfile->name); |
c906108c SS |
7847 | } |
7848 | return type; | |
7849 | } | |
7850 | ||
7851 | /* Return the containing type of the die in question using its | |
7852 | DW_AT_containing_type attribute. */ | |
7853 | ||
7854 | static struct type * | |
e7c27a73 | 7855 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7856 | { |
7857 | struct type *type = NULL; | |
7858 | struct attribute *type_attr; | |
7859 | struct die_info *type_die = NULL; | |
c906108c | 7860 | |
e142c38c | 7861 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7862 | if (type_attr) |
7863 | { | |
f2f0e013 | 7864 | type_die = follow_die_ref (die, type_attr, &cu); |
e7c27a73 | 7865 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7866 | } |
7867 | if (!type) | |
7868 | { | |
7869 | if (type_die) | |
d97bc12b | 7870 | dump_die_for_error (type_die); |
8a3fe4f8 | 7871 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7872 | cu->objfile->name); |
c906108c SS |
7873 | } |
7874 | return type; | |
7875 | } | |
7876 | ||
c906108c | 7877 | static struct type * |
e7c27a73 | 7878 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7879 | { |
f792889a DJ |
7880 | struct type *this_type; |
7881 | ||
7882 | this_type = read_type_die (die, cu); | |
7883 | if (!this_type) | |
c906108c | 7884 | { |
d97bc12b | 7885 | dump_die_for_error (die); |
f792889a DJ |
7886 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
7887 | cu->objfile->name); | |
c906108c | 7888 | } |
f792889a | 7889 | return this_type; |
c906108c SS |
7890 | } |
7891 | ||
f792889a | 7892 | static struct type * |
e7c27a73 | 7893 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7894 | { |
f792889a DJ |
7895 | struct type *this_type; |
7896 | ||
7897 | this_type = get_die_type (die, cu); | |
7898 | if (this_type) | |
7899 | return this_type; | |
7900 | ||
c906108c SS |
7901 | switch (die->tag) |
7902 | { | |
7903 | case DW_TAG_class_type: | |
680b30c7 | 7904 | case DW_TAG_interface_type: |
c906108c SS |
7905 | case DW_TAG_structure_type: |
7906 | case DW_TAG_union_type: | |
f792889a | 7907 | this_type = read_structure_type (die, cu); |
c906108c SS |
7908 | break; |
7909 | case DW_TAG_enumeration_type: | |
f792889a | 7910 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
7911 | break; |
7912 | case DW_TAG_subprogram: | |
7913 | case DW_TAG_subroutine_type: | |
f792889a | 7914 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
7915 | break; |
7916 | case DW_TAG_array_type: | |
f792889a | 7917 | this_type = read_array_type (die, cu); |
c906108c | 7918 | break; |
72019c9c | 7919 | case DW_TAG_set_type: |
f792889a | 7920 | this_type = read_set_type (die, cu); |
72019c9c | 7921 | break; |
c906108c | 7922 | case DW_TAG_pointer_type: |
f792889a | 7923 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
7924 | break; |
7925 | case DW_TAG_ptr_to_member_type: | |
f792889a | 7926 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7927 | break; |
7928 | case DW_TAG_reference_type: | |
f792889a | 7929 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
7930 | break; |
7931 | case DW_TAG_const_type: | |
f792889a | 7932 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
7933 | break; |
7934 | case DW_TAG_volatile_type: | |
f792889a | 7935 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
7936 | break; |
7937 | case DW_TAG_string_type: | |
f792889a | 7938 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
7939 | break; |
7940 | case DW_TAG_typedef: | |
f792889a | 7941 | this_type = read_typedef (die, cu); |
c906108c | 7942 | break; |
a02abb62 | 7943 | case DW_TAG_subrange_type: |
f792889a | 7944 | this_type = read_subrange_type (die, cu); |
a02abb62 | 7945 | break; |
c906108c | 7946 | case DW_TAG_base_type: |
f792889a | 7947 | this_type = read_base_type (die, cu); |
c906108c | 7948 | break; |
81a17f79 | 7949 | case DW_TAG_unspecified_type: |
f792889a | 7950 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 7951 | break; |
0114d602 DJ |
7952 | case DW_TAG_namespace: |
7953 | this_type = read_namespace_type (die, cu); | |
7954 | break; | |
c906108c | 7955 | default: |
a1f5b845 | 7956 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7957 | dwarf_tag_name (die->tag)); |
c906108c SS |
7958 | break; |
7959 | } | |
63d06c5c | 7960 | |
f792889a | 7961 | return this_type; |
63d06c5c DC |
7962 | } |
7963 | ||
fdde2d81 | 7964 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 7965 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 7966 | |
0114d602 DJ |
7967 | For example, if we're within the method foo() in the following |
7968 | code: | |
7969 | ||
7970 | namespace N { | |
7971 | class C { | |
7972 | void foo () { | |
7973 | } | |
7974 | }; | |
7975 | } | |
7976 | ||
7977 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
7978 | |
7979 | static char * | |
e142c38c | 7980 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 7981 | { |
0114d602 DJ |
7982 | struct die_info *parent, *spec_die; |
7983 | struct dwarf2_cu *spec_cu; | |
7984 | struct type *parent_type; | |
63d06c5c | 7985 | |
987504bb JJ |
7986 | if (cu->language != language_cplus |
7987 | && cu->language != language_java) | |
0114d602 DJ |
7988 | return ""; |
7989 | ||
7990 | /* We have to be careful in the presence of DW_AT_specification. | |
7991 | For example, with GCC 3.4, given the code | |
7992 | ||
7993 | namespace N { | |
7994 | void foo() { | |
7995 | // Definition of N::foo. | |
7996 | } | |
7997 | } | |
7998 | ||
7999 | then we'll have a tree of DIEs like this: | |
8000 | ||
8001 | 1: DW_TAG_compile_unit | |
8002 | 2: DW_TAG_namespace // N | |
8003 | 3: DW_TAG_subprogram // declaration of N::foo | |
8004 | 4: DW_TAG_subprogram // definition of N::foo | |
8005 | DW_AT_specification // refers to die #3 | |
8006 | ||
8007 | Thus, when processing die #4, we have to pretend that we're in | |
8008 | the context of its DW_AT_specification, namely the contex of die | |
8009 | #3. */ | |
8010 | spec_cu = cu; | |
8011 | spec_die = die_specification (die, &spec_cu); | |
8012 | if (spec_die == NULL) | |
8013 | parent = die->parent; | |
8014 | else | |
63d06c5c | 8015 | { |
0114d602 DJ |
8016 | parent = spec_die->parent; |
8017 | cu = spec_cu; | |
63d06c5c | 8018 | } |
0114d602 DJ |
8019 | |
8020 | if (parent == NULL) | |
8021 | return ""; | |
63d06c5c | 8022 | else |
0114d602 DJ |
8023 | switch (parent->tag) |
8024 | { | |
63d06c5c | 8025 | case DW_TAG_namespace: |
0114d602 DJ |
8026 | parent_type = read_type_die (parent, cu); |
8027 | /* We give a name to even anonymous namespaces. */ | |
8028 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 8029 | case DW_TAG_class_type: |
680b30c7 | 8030 | case DW_TAG_interface_type: |
63d06c5c | 8031 | case DW_TAG_structure_type: |
0114d602 DJ |
8032 | case DW_TAG_union_type: |
8033 | parent_type = read_type_die (parent, cu); | |
8034 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
8035 | return TYPE_TAG_NAME (parent_type); | |
8036 | else | |
8037 | /* An anonymous structure is only allowed non-static data | |
8038 | members; no typedefs, no member functions, et cetera. | |
8039 | So it does not need a prefix. */ | |
8040 | return ""; | |
63d06c5c | 8041 | default: |
8176b9b8 | 8042 | return determine_prefix (parent, cu); |
63d06c5c | 8043 | } |
63d06c5c DC |
8044 | } |
8045 | ||
987504bb JJ |
8046 | /* Return a newly-allocated string formed by concatenating PREFIX and |
8047 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
8048 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
8049 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
8050 | is used to determine the language and hence, the appropriate separator. */ | |
8051 | ||
8052 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
8053 | |
8054 | static char * | |
987504bb JJ |
8055 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
8056 | struct dwarf2_cu *cu) | |
63d06c5c | 8057 | { |
987504bb | 8058 | char *sep; |
63d06c5c | 8059 | |
987504bb JJ |
8060 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
8061 | sep = ""; | |
8062 | else if (cu->language == language_java) | |
8063 | sep = "."; | |
8064 | else | |
8065 | sep = "::"; | |
63d06c5c | 8066 | |
987504bb JJ |
8067 | if (obs == NULL) |
8068 | { | |
8069 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
8070 | retval[0] = '\0'; | |
8071 | ||
8072 | if (prefix) | |
8073 | { | |
8074 | strcpy (retval, prefix); | |
8075 | strcat (retval, sep); | |
8076 | } | |
8077 | if (suffix) | |
8078 | strcat (retval, suffix); | |
8079 | ||
63d06c5c DC |
8080 | return retval; |
8081 | } | |
987504bb JJ |
8082 | else |
8083 | { | |
8084 | /* We have an obstack. */ | |
8085 | return obconcat (obs, prefix, sep, suffix); | |
8086 | } | |
63d06c5c DC |
8087 | } |
8088 | ||
c906108c SS |
8089 | /* Return sibling of die, NULL if no sibling. */ |
8090 | ||
f9aca02d | 8091 | static struct die_info * |
fba45db2 | 8092 | sibling_die (struct die_info *die) |
c906108c | 8093 | { |
639d11d3 | 8094 | return die->sibling; |
c906108c SS |
8095 | } |
8096 | ||
8097 | /* Get linkage name of a die, return NULL if not found. */ | |
8098 | ||
8099 | static char * | |
e142c38c | 8100 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8101 | { |
8102 | struct attribute *attr; | |
8103 | ||
e142c38c | 8104 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
8105 | if (attr && DW_STRING (attr)) |
8106 | return DW_STRING (attr); | |
e142c38c | 8107 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
8108 | if (attr && DW_STRING (attr)) |
8109 | return DW_STRING (attr); | |
8110 | return NULL; | |
8111 | } | |
8112 | ||
9219021c DC |
8113 | /* Get name of a die, return NULL if not found. */ |
8114 | ||
8115 | static char * | |
e142c38c | 8116 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
8117 | { |
8118 | struct attribute *attr; | |
8119 | ||
e142c38c | 8120 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
8121 | if (attr && DW_STRING (attr)) |
8122 | return DW_STRING (attr); | |
8123 | return NULL; | |
8124 | } | |
8125 | ||
8126 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
8127 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
8128 | containing the return value on output. */ | |
9219021c DC |
8129 | |
8130 | static struct die_info * | |
f2f0e013 | 8131 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
8132 | { |
8133 | struct attribute *attr; | |
9219021c | 8134 | |
f2f0e013 | 8135 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
8136 | if (attr == NULL) |
8137 | return NULL; | |
8138 | ||
f2f0e013 | 8139 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
8140 | } |
8141 | ||
c906108c SS |
8142 | /* Convert a DIE tag into its string name. */ |
8143 | ||
8144 | static char * | |
aa1ee363 | 8145 | dwarf_tag_name (unsigned tag) |
c906108c SS |
8146 | { |
8147 | switch (tag) | |
8148 | { | |
8149 | case DW_TAG_padding: | |
8150 | return "DW_TAG_padding"; | |
8151 | case DW_TAG_array_type: | |
8152 | return "DW_TAG_array_type"; | |
8153 | case DW_TAG_class_type: | |
8154 | return "DW_TAG_class_type"; | |
8155 | case DW_TAG_entry_point: | |
8156 | return "DW_TAG_entry_point"; | |
8157 | case DW_TAG_enumeration_type: | |
8158 | return "DW_TAG_enumeration_type"; | |
8159 | case DW_TAG_formal_parameter: | |
8160 | return "DW_TAG_formal_parameter"; | |
8161 | case DW_TAG_imported_declaration: | |
8162 | return "DW_TAG_imported_declaration"; | |
8163 | case DW_TAG_label: | |
8164 | return "DW_TAG_label"; | |
8165 | case DW_TAG_lexical_block: | |
8166 | return "DW_TAG_lexical_block"; | |
8167 | case DW_TAG_member: | |
8168 | return "DW_TAG_member"; | |
8169 | case DW_TAG_pointer_type: | |
8170 | return "DW_TAG_pointer_type"; | |
8171 | case DW_TAG_reference_type: | |
8172 | return "DW_TAG_reference_type"; | |
8173 | case DW_TAG_compile_unit: | |
8174 | return "DW_TAG_compile_unit"; | |
8175 | case DW_TAG_string_type: | |
8176 | return "DW_TAG_string_type"; | |
8177 | case DW_TAG_structure_type: | |
8178 | return "DW_TAG_structure_type"; | |
8179 | case DW_TAG_subroutine_type: | |
8180 | return "DW_TAG_subroutine_type"; | |
8181 | case DW_TAG_typedef: | |
8182 | return "DW_TAG_typedef"; | |
8183 | case DW_TAG_union_type: | |
8184 | return "DW_TAG_union_type"; | |
8185 | case DW_TAG_unspecified_parameters: | |
8186 | return "DW_TAG_unspecified_parameters"; | |
8187 | case DW_TAG_variant: | |
8188 | return "DW_TAG_variant"; | |
8189 | case DW_TAG_common_block: | |
8190 | return "DW_TAG_common_block"; | |
8191 | case DW_TAG_common_inclusion: | |
8192 | return "DW_TAG_common_inclusion"; | |
8193 | case DW_TAG_inheritance: | |
8194 | return "DW_TAG_inheritance"; | |
8195 | case DW_TAG_inlined_subroutine: | |
8196 | return "DW_TAG_inlined_subroutine"; | |
8197 | case DW_TAG_module: | |
8198 | return "DW_TAG_module"; | |
8199 | case DW_TAG_ptr_to_member_type: | |
8200 | return "DW_TAG_ptr_to_member_type"; | |
8201 | case DW_TAG_set_type: | |
8202 | return "DW_TAG_set_type"; | |
8203 | case DW_TAG_subrange_type: | |
8204 | return "DW_TAG_subrange_type"; | |
8205 | case DW_TAG_with_stmt: | |
8206 | return "DW_TAG_with_stmt"; | |
8207 | case DW_TAG_access_declaration: | |
8208 | return "DW_TAG_access_declaration"; | |
8209 | case DW_TAG_base_type: | |
8210 | return "DW_TAG_base_type"; | |
8211 | case DW_TAG_catch_block: | |
8212 | return "DW_TAG_catch_block"; | |
8213 | case DW_TAG_const_type: | |
8214 | return "DW_TAG_const_type"; | |
8215 | case DW_TAG_constant: | |
8216 | return "DW_TAG_constant"; | |
8217 | case DW_TAG_enumerator: | |
8218 | return "DW_TAG_enumerator"; | |
8219 | case DW_TAG_file_type: | |
8220 | return "DW_TAG_file_type"; | |
8221 | case DW_TAG_friend: | |
8222 | return "DW_TAG_friend"; | |
8223 | case DW_TAG_namelist: | |
8224 | return "DW_TAG_namelist"; | |
8225 | case DW_TAG_namelist_item: | |
8226 | return "DW_TAG_namelist_item"; | |
8227 | case DW_TAG_packed_type: | |
8228 | return "DW_TAG_packed_type"; | |
8229 | case DW_TAG_subprogram: | |
8230 | return "DW_TAG_subprogram"; | |
8231 | case DW_TAG_template_type_param: | |
8232 | return "DW_TAG_template_type_param"; | |
8233 | case DW_TAG_template_value_param: | |
8234 | return "DW_TAG_template_value_param"; | |
8235 | case DW_TAG_thrown_type: | |
8236 | return "DW_TAG_thrown_type"; | |
8237 | case DW_TAG_try_block: | |
8238 | return "DW_TAG_try_block"; | |
8239 | case DW_TAG_variant_part: | |
8240 | return "DW_TAG_variant_part"; | |
8241 | case DW_TAG_variable: | |
8242 | return "DW_TAG_variable"; | |
8243 | case DW_TAG_volatile_type: | |
8244 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
8245 | case DW_TAG_dwarf_procedure: |
8246 | return "DW_TAG_dwarf_procedure"; | |
8247 | case DW_TAG_restrict_type: | |
8248 | return "DW_TAG_restrict_type"; | |
8249 | case DW_TAG_interface_type: | |
8250 | return "DW_TAG_interface_type"; | |
8251 | case DW_TAG_namespace: | |
8252 | return "DW_TAG_namespace"; | |
8253 | case DW_TAG_imported_module: | |
8254 | return "DW_TAG_imported_module"; | |
8255 | case DW_TAG_unspecified_type: | |
8256 | return "DW_TAG_unspecified_type"; | |
8257 | case DW_TAG_partial_unit: | |
8258 | return "DW_TAG_partial_unit"; | |
8259 | case DW_TAG_imported_unit: | |
8260 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
8261 | case DW_TAG_condition: |
8262 | return "DW_TAG_condition"; | |
8263 | case DW_TAG_shared_type: | |
8264 | return "DW_TAG_shared_type"; | |
c906108c SS |
8265 | case DW_TAG_MIPS_loop: |
8266 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
8267 | case DW_TAG_HP_array_descriptor: |
8268 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
8269 | case DW_TAG_format_label: |
8270 | return "DW_TAG_format_label"; | |
8271 | case DW_TAG_function_template: | |
8272 | return "DW_TAG_function_template"; | |
8273 | case DW_TAG_class_template: | |
8274 | return "DW_TAG_class_template"; | |
b7619582 GF |
8275 | case DW_TAG_GNU_BINCL: |
8276 | return "DW_TAG_GNU_BINCL"; | |
8277 | case DW_TAG_GNU_EINCL: | |
8278 | return "DW_TAG_GNU_EINCL"; | |
8279 | case DW_TAG_upc_shared_type: | |
8280 | return "DW_TAG_upc_shared_type"; | |
8281 | case DW_TAG_upc_strict_type: | |
8282 | return "DW_TAG_upc_strict_type"; | |
8283 | case DW_TAG_upc_relaxed_type: | |
8284 | return "DW_TAG_upc_relaxed_type"; | |
8285 | case DW_TAG_PGI_kanji_type: | |
8286 | return "DW_TAG_PGI_kanji_type"; | |
8287 | case DW_TAG_PGI_interface_block: | |
8288 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
8289 | default: |
8290 | return "DW_TAG_<unknown>"; | |
8291 | } | |
8292 | } | |
8293 | ||
8294 | /* Convert a DWARF attribute code into its string name. */ | |
8295 | ||
8296 | static char * | |
aa1ee363 | 8297 | dwarf_attr_name (unsigned attr) |
c906108c SS |
8298 | { |
8299 | switch (attr) | |
8300 | { | |
8301 | case DW_AT_sibling: | |
8302 | return "DW_AT_sibling"; | |
8303 | case DW_AT_location: | |
8304 | return "DW_AT_location"; | |
8305 | case DW_AT_name: | |
8306 | return "DW_AT_name"; | |
8307 | case DW_AT_ordering: | |
8308 | return "DW_AT_ordering"; | |
8309 | case DW_AT_subscr_data: | |
8310 | return "DW_AT_subscr_data"; | |
8311 | case DW_AT_byte_size: | |
8312 | return "DW_AT_byte_size"; | |
8313 | case DW_AT_bit_offset: | |
8314 | return "DW_AT_bit_offset"; | |
8315 | case DW_AT_bit_size: | |
8316 | return "DW_AT_bit_size"; | |
8317 | case DW_AT_element_list: | |
8318 | return "DW_AT_element_list"; | |
8319 | case DW_AT_stmt_list: | |
8320 | return "DW_AT_stmt_list"; | |
8321 | case DW_AT_low_pc: | |
8322 | return "DW_AT_low_pc"; | |
8323 | case DW_AT_high_pc: | |
8324 | return "DW_AT_high_pc"; | |
8325 | case DW_AT_language: | |
8326 | return "DW_AT_language"; | |
8327 | case DW_AT_member: | |
8328 | return "DW_AT_member"; | |
8329 | case DW_AT_discr: | |
8330 | return "DW_AT_discr"; | |
8331 | case DW_AT_discr_value: | |
8332 | return "DW_AT_discr_value"; | |
8333 | case DW_AT_visibility: | |
8334 | return "DW_AT_visibility"; | |
8335 | case DW_AT_import: | |
8336 | return "DW_AT_import"; | |
8337 | case DW_AT_string_length: | |
8338 | return "DW_AT_string_length"; | |
8339 | case DW_AT_common_reference: | |
8340 | return "DW_AT_common_reference"; | |
8341 | case DW_AT_comp_dir: | |
8342 | return "DW_AT_comp_dir"; | |
8343 | case DW_AT_const_value: | |
8344 | return "DW_AT_const_value"; | |
8345 | case DW_AT_containing_type: | |
8346 | return "DW_AT_containing_type"; | |
8347 | case DW_AT_default_value: | |
8348 | return "DW_AT_default_value"; | |
8349 | case DW_AT_inline: | |
8350 | return "DW_AT_inline"; | |
8351 | case DW_AT_is_optional: | |
8352 | return "DW_AT_is_optional"; | |
8353 | case DW_AT_lower_bound: | |
8354 | return "DW_AT_lower_bound"; | |
8355 | case DW_AT_producer: | |
8356 | return "DW_AT_producer"; | |
8357 | case DW_AT_prototyped: | |
8358 | return "DW_AT_prototyped"; | |
8359 | case DW_AT_return_addr: | |
8360 | return "DW_AT_return_addr"; | |
8361 | case DW_AT_start_scope: | |
8362 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
8363 | case DW_AT_bit_stride: |
8364 | return "DW_AT_bit_stride"; | |
c906108c SS |
8365 | case DW_AT_upper_bound: |
8366 | return "DW_AT_upper_bound"; | |
8367 | case DW_AT_abstract_origin: | |
8368 | return "DW_AT_abstract_origin"; | |
8369 | case DW_AT_accessibility: | |
8370 | return "DW_AT_accessibility"; | |
8371 | case DW_AT_address_class: | |
8372 | return "DW_AT_address_class"; | |
8373 | case DW_AT_artificial: | |
8374 | return "DW_AT_artificial"; | |
8375 | case DW_AT_base_types: | |
8376 | return "DW_AT_base_types"; | |
8377 | case DW_AT_calling_convention: | |
8378 | return "DW_AT_calling_convention"; | |
8379 | case DW_AT_count: | |
8380 | return "DW_AT_count"; | |
8381 | case DW_AT_data_member_location: | |
8382 | return "DW_AT_data_member_location"; | |
8383 | case DW_AT_decl_column: | |
8384 | return "DW_AT_decl_column"; | |
8385 | case DW_AT_decl_file: | |
8386 | return "DW_AT_decl_file"; | |
8387 | case DW_AT_decl_line: | |
8388 | return "DW_AT_decl_line"; | |
8389 | case DW_AT_declaration: | |
8390 | return "DW_AT_declaration"; | |
8391 | case DW_AT_discr_list: | |
8392 | return "DW_AT_discr_list"; | |
8393 | case DW_AT_encoding: | |
8394 | return "DW_AT_encoding"; | |
8395 | case DW_AT_external: | |
8396 | return "DW_AT_external"; | |
8397 | case DW_AT_frame_base: | |
8398 | return "DW_AT_frame_base"; | |
8399 | case DW_AT_friend: | |
8400 | return "DW_AT_friend"; | |
8401 | case DW_AT_identifier_case: | |
8402 | return "DW_AT_identifier_case"; | |
8403 | case DW_AT_macro_info: | |
8404 | return "DW_AT_macro_info"; | |
8405 | case DW_AT_namelist_items: | |
8406 | return "DW_AT_namelist_items"; | |
8407 | case DW_AT_priority: | |
8408 | return "DW_AT_priority"; | |
8409 | case DW_AT_segment: | |
8410 | return "DW_AT_segment"; | |
8411 | case DW_AT_specification: | |
8412 | return "DW_AT_specification"; | |
8413 | case DW_AT_static_link: | |
8414 | return "DW_AT_static_link"; | |
8415 | case DW_AT_type: | |
8416 | return "DW_AT_type"; | |
8417 | case DW_AT_use_location: | |
8418 | return "DW_AT_use_location"; | |
8419 | case DW_AT_variable_parameter: | |
8420 | return "DW_AT_variable_parameter"; | |
8421 | case DW_AT_virtuality: | |
8422 | return "DW_AT_virtuality"; | |
8423 | case DW_AT_vtable_elem_location: | |
8424 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8425 | /* DWARF 3 values. */ |
d9fa45fe DC |
8426 | case DW_AT_allocated: |
8427 | return "DW_AT_allocated"; | |
8428 | case DW_AT_associated: | |
8429 | return "DW_AT_associated"; | |
8430 | case DW_AT_data_location: | |
8431 | return "DW_AT_data_location"; | |
09fa0d7c JK |
8432 | case DW_AT_byte_stride: |
8433 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
8434 | case DW_AT_entry_pc: |
8435 | return "DW_AT_entry_pc"; | |
8436 | case DW_AT_use_UTF8: | |
8437 | return "DW_AT_use_UTF8"; | |
8438 | case DW_AT_extension: | |
8439 | return "DW_AT_extension"; | |
8440 | case DW_AT_ranges: | |
8441 | return "DW_AT_ranges"; | |
8442 | case DW_AT_trampoline: | |
8443 | return "DW_AT_trampoline"; | |
8444 | case DW_AT_call_column: | |
8445 | return "DW_AT_call_column"; | |
8446 | case DW_AT_call_file: | |
8447 | return "DW_AT_call_file"; | |
8448 | case DW_AT_call_line: | |
8449 | return "DW_AT_call_line"; | |
b7619582 GF |
8450 | case DW_AT_description: |
8451 | return "DW_AT_description"; | |
8452 | case DW_AT_binary_scale: | |
8453 | return "DW_AT_binary_scale"; | |
8454 | case DW_AT_decimal_scale: | |
8455 | return "DW_AT_decimal_scale"; | |
8456 | case DW_AT_small: | |
8457 | return "DW_AT_small"; | |
8458 | case DW_AT_decimal_sign: | |
8459 | return "DW_AT_decimal_sign"; | |
8460 | case DW_AT_digit_count: | |
8461 | return "DW_AT_digit_count"; | |
8462 | case DW_AT_picture_string: | |
8463 | return "DW_AT_picture_string"; | |
8464 | case DW_AT_mutable: | |
8465 | return "DW_AT_mutable"; | |
8466 | case DW_AT_threads_scaled: | |
8467 | return "DW_AT_threads_scaled"; | |
8468 | case DW_AT_explicit: | |
8469 | return "DW_AT_explicit"; | |
8470 | case DW_AT_object_pointer: | |
8471 | return "DW_AT_object_pointer"; | |
8472 | case DW_AT_endianity: | |
8473 | return "DW_AT_endianity"; | |
8474 | case DW_AT_elemental: | |
8475 | return "DW_AT_elemental"; | |
8476 | case DW_AT_pure: | |
8477 | return "DW_AT_pure"; | |
8478 | case DW_AT_recursive: | |
8479 | return "DW_AT_recursive"; | |
c906108c | 8480 | #ifdef MIPS |
b7619582 | 8481 | /* SGI/MIPS extensions. */ |
c906108c SS |
8482 | case DW_AT_MIPS_fde: |
8483 | return "DW_AT_MIPS_fde"; | |
8484 | case DW_AT_MIPS_loop_begin: | |
8485 | return "DW_AT_MIPS_loop_begin"; | |
8486 | case DW_AT_MIPS_tail_loop_begin: | |
8487 | return "DW_AT_MIPS_tail_loop_begin"; | |
8488 | case DW_AT_MIPS_epilog_begin: | |
8489 | return "DW_AT_MIPS_epilog_begin"; | |
8490 | case DW_AT_MIPS_loop_unroll_factor: | |
8491 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8492 | case DW_AT_MIPS_software_pipeline_depth: | |
8493 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8494 | case DW_AT_MIPS_linkage_name: | |
8495 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8496 | case DW_AT_MIPS_stride: |
8497 | return "DW_AT_MIPS_stride"; | |
8498 | case DW_AT_MIPS_abstract_name: | |
8499 | return "DW_AT_MIPS_abstract_name"; | |
8500 | case DW_AT_MIPS_clone_origin: | |
8501 | return "DW_AT_MIPS_clone_origin"; | |
8502 | case DW_AT_MIPS_has_inlines: | |
8503 | return "DW_AT_MIPS_has_inlines"; | |
8504 | #endif | |
8505 | /* HP extensions. */ | |
8506 | case DW_AT_HP_block_index: | |
8507 | return "DW_AT_HP_block_index"; | |
8508 | case DW_AT_HP_unmodifiable: | |
8509 | return "DW_AT_HP_unmodifiable"; | |
8510 | case DW_AT_HP_actuals_stmt_list: | |
8511 | return "DW_AT_HP_actuals_stmt_list"; | |
8512 | case DW_AT_HP_proc_per_section: | |
8513 | return "DW_AT_HP_proc_per_section"; | |
8514 | case DW_AT_HP_raw_data_ptr: | |
8515 | return "DW_AT_HP_raw_data_ptr"; | |
8516 | case DW_AT_HP_pass_by_reference: | |
8517 | return "DW_AT_HP_pass_by_reference"; | |
8518 | case DW_AT_HP_opt_level: | |
8519 | return "DW_AT_HP_opt_level"; | |
8520 | case DW_AT_HP_prof_version_id: | |
8521 | return "DW_AT_HP_prof_version_id"; | |
8522 | case DW_AT_HP_opt_flags: | |
8523 | return "DW_AT_HP_opt_flags"; | |
8524 | case DW_AT_HP_cold_region_low_pc: | |
8525 | return "DW_AT_HP_cold_region_low_pc"; | |
8526 | case DW_AT_HP_cold_region_high_pc: | |
8527 | return "DW_AT_HP_cold_region_high_pc"; | |
8528 | case DW_AT_HP_all_variables_modifiable: | |
8529 | return "DW_AT_HP_all_variables_modifiable"; | |
8530 | case DW_AT_HP_linkage_name: | |
8531 | return "DW_AT_HP_linkage_name"; | |
8532 | case DW_AT_HP_prof_flags: | |
8533 | return "DW_AT_HP_prof_flags"; | |
8534 | /* GNU extensions. */ | |
c906108c SS |
8535 | case DW_AT_sf_names: |
8536 | return "DW_AT_sf_names"; | |
8537 | case DW_AT_src_info: | |
8538 | return "DW_AT_src_info"; | |
8539 | case DW_AT_mac_info: | |
8540 | return "DW_AT_mac_info"; | |
8541 | case DW_AT_src_coords: | |
8542 | return "DW_AT_src_coords"; | |
8543 | case DW_AT_body_begin: | |
8544 | return "DW_AT_body_begin"; | |
8545 | case DW_AT_body_end: | |
8546 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8547 | case DW_AT_GNU_vector: |
8548 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8549 | /* VMS extensions. */ |
8550 | case DW_AT_VMS_rtnbeg_pd_address: | |
8551 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8552 | /* UPC extension. */ | |
8553 | case DW_AT_upc_threads_scaled: | |
8554 | return "DW_AT_upc_threads_scaled"; | |
8555 | /* PGI (STMicroelectronics) extensions. */ | |
8556 | case DW_AT_PGI_lbase: | |
8557 | return "DW_AT_PGI_lbase"; | |
8558 | case DW_AT_PGI_soffset: | |
8559 | return "DW_AT_PGI_soffset"; | |
8560 | case DW_AT_PGI_lstride: | |
8561 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8562 | default: |
8563 | return "DW_AT_<unknown>"; | |
8564 | } | |
8565 | } | |
8566 | ||
8567 | /* Convert a DWARF value form code into its string name. */ | |
8568 | ||
8569 | static char * | |
aa1ee363 | 8570 | dwarf_form_name (unsigned form) |
c906108c SS |
8571 | { |
8572 | switch (form) | |
8573 | { | |
8574 | case DW_FORM_addr: | |
8575 | return "DW_FORM_addr"; | |
8576 | case DW_FORM_block2: | |
8577 | return "DW_FORM_block2"; | |
8578 | case DW_FORM_block4: | |
8579 | return "DW_FORM_block4"; | |
8580 | case DW_FORM_data2: | |
8581 | return "DW_FORM_data2"; | |
8582 | case DW_FORM_data4: | |
8583 | return "DW_FORM_data4"; | |
8584 | case DW_FORM_data8: | |
8585 | return "DW_FORM_data8"; | |
8586 | case DW_FORM_string: | |
8587 | return "DW_FORM_string"; | |
8588 | case DW_FORM_block: | |
8589 | return "DW_FORM_block"; | |
8590 | case DW_FORM_block1: | |
8591 | return "DW_FORM_block1"; | |
8592 | case DW_FORM_data1: | |
8593 | return "DW_FORM_data1"; | |
8594 | case DW_FORM_flag: | |
8595 | return "DW_FORM_flag"; | |
8596 | case DW_FORM_sdata: | |
8597 | return "DW_FORM_sdata"; | |
8598 | case DW_FORM_strp: | |
8599 | return "DW_FORM_strp"; | |
8600 | case DW_FORM_udata: | |
8601 | return "DW_FORM_udata"; | |
8602 | case DW_FORM_ref_addr: | |
8603 | return "DW_FORM_ref_addr"; | |
8604 | case DW_FORM_ref1: | |
8605 | return "DW_FORM_ref1"; | |
8606 | case DW_FORM_ref2: | |
8607 | return "DW_FORM_ref2"; | |
8608 | case DW_FORM_ref4: | |
8609 | return "DW_FORM_ref4"; | |
8610 | case DW_FORM_ref8: | |
8611 | return "DW_FORM_ref8"; | |
8612 | case DW_FORM_ref_udata: | |
8613 | return "DW_FORM_ref_udata"; | |
8614 | case DW_FORM_indirect: | |
8615 | return "DW_FORM_indirect"; | |
8616 | default: | |
8617 | return "DW_FORM_<unknown>"; | |
8618 | } | |
8619 | } | |
8620 | ||
8621 | /* Convert a DWARF stack opcode into its string name. */ | |
8622 | ||
8623 | static char * | |
aa1ee363 | 8624 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8625 | { |
8626 | switch (op) | |
8627 | { | |
8628 | case DW_OP_addr: | |
8629 | return "DW_OP_addr"; | |
8630 | case DW_OP_deref: | |
8631 | return "DW_OP_deref"; | |
8632 | case DW_OP_const1u: | |
8633 | return "DW_OP_const1u"; | |
8634 | case DW_OP_const1s: | |
8635 | return "DW_OP_const1s"; | |
8636 | case DW_OP_const2u: | |
8637 | return "DW_OP_const2u"; | |
8638 | case DW_OP_const2s: | |
8639 | return "DW_OP_const2s"; | |
8640 | case DW_OP_const4u: | |
8641 | return "DW_OP_const4u"; | |
8642 | case DW_OP_const4s: | |
8643 | return "DW_OP_const4s"; | |
8644 | case DW_OP_const8u: | |
8645 | return "DW_OP_const8u"; | |
8646 | case DW_OP_const8s: | |
8647 | return "DW_OP_const8s"; | |
8648 | case DW_OP_constu: | |
8649 | return "DW_OP_constu"; | |
8650 | case DW_OP_consts: | |
8651 | return "DW_OP_consts"; | |
8652 | case DW_OP_dup: | |
8653 | return "DW_OP_dup"; | |
8654 | case DW_OP_drop: | |
8655 | return "DW_OP_drop"; | |
8656 | case DW_OP_over: | |
8657 | return "DW_OP_over"; | |
8658 | case DW_OP_pick: | |
8659 | return "DW_OP_pick"; | |
8660 | case DW_OP_swap: | |
8661 | return "DW_OP_swap"; | |
8662 | case DW_OP_rot: | |
8663 | return "DW_OP_rot"; | |
8664 | case DW_OP_xderef: | |
8665 | return "DW_OP_xderef"; | |
8666 | case DW_OP_abs: | |
8667 | return "DW_OP_abs"; | |
8668 | case DW_OP_and: | |
8669 | return "DW_OP_and"; | |
8670 | case DW_OP_div: | |
8671 | return "DW_OP_div"; | |
8672 | case DW_OP_minus: | |
8673 | return "DW_OP_minus"; | |
8674 | case DW_OP_mod: | |
8675 | return "DW_OP_mod"; | |
8676 | case DW_OP_mul: | |
8677 | return "DW_OP_mul"; | |
8678 | case DW_OP_neg: | |
8679 | return "DW_OP_neg"; | |
8680 | case DW_OP_not: | |
8681 | return "DW_OP_not"; | |
8682 | case DW_OP_or: | |
8683 | return "DW_OP_or"; | |
8684 | case DW_OP_plus: | |
8685 | return "DW_OP_plus"; | |
8686 | case DW_OP_plus_uconst: | |
8687 | return "DW_OP_plus_uconst"; | |
8688 | case DW_OP_shl: | |
8689 | return "DW_OP_shl"; | |
8690 | case DW_OP_shr: | |
8691 | return "DW_OP_shr"; | |
8692 | case DW_OP_shra: | |
8693 | return "DW_OP_shra"; | |
8694 | case DW_OP_xor: | |
8695 | return "DW_OP_xor"; | |
8696 | case DW_OP_bra: | |
8697 | return "DW_OP_bra"; | |
8698 | case DW_OP_eq: | |
8699 | return "DW_OP_eq"; | |
8700 | case DW_OP_ge: | |
8701 | return "DW_OP_ge"; | |
8702 | case DW_OP_gt: | |
8703 | return "DW_OP_gt"; | |
8704 | case DW_OP_le: | |
8705 | return "DW_OP_le"; | |
8706 | case DW_OP_lt: | |
8707 | return "DW_OP_lt"; | |
8708 | case DW_OP_ne: | |
8709 | return "DW_OP_ne"; | |
8710 | case DW_OP_skip: | |
8711 | return "DW_OP_skip"; | |
8712 | case DW_OP_lit0: | |
8713 | return "DW_OP_lit0"; | |
8714 | case DW_OP_lit1: | |
8715 | return "DW_OP_lit1"; | |
8716 | case DW_OP_lit2: | |
8717 | return "DW_OP_lit2"; | |
8718 | case DW_OP_lit3: | |
8719 | return "DW_OP_lit3"; | |
8720 | case DW_OP_lit4: | |
8721 | return "DW_OP_lit4"; | |
8722 | case DW_OP_lit5: | |
8723 | return "DW_OP_lit5"; | |
8724 | case DW_OP_lit6: | |
8725 | return "DW_OP_lit6"; | |
8726 | case DW_OP_lit7: | |
8727 | return "DW_OP_lit7"; | |
8728 | case DW_OP_lit8: | |
8729 | return "DW_OP_lit8"; | |
8730 | case DW_OP_lit9: | |
8731 | return "DW_OP_lit9"; | |
8732 | case DW_OP_lit10: | |
8733 | return "DW_OP_lit10"; | |
8734 | case DW_OP_lit11: | |
8735 | return "DW_OP_lit11"; | |
8736 | case DW_OP_lit12: | |
8737 | return "DW_OP_lit12"; | |
8738 | case DW_OP_lit13: | |
8739 | return "DW_OP_lit13"; | |
8740 | case DW_OP_lit14: | |
8741 | return "DW_OP_lit14"; | |
8742 | case DW_OP_lit15: | |
8743 | return "DW_OP_lit15"; | |
8744 | case DW_OP_lit16: | |
8745 | return "DW_OP_lit16"; | |
8746 | case DW_OP_lit17: | |
8747 | return "DW_OP_lit17"; | |
8748 | case DW_OP_lit18: | |
8749 | return "DW_OP_lit18"; | |
8750 | case DW_OP_lit19: | |
8751 | return "DW_OP_lit19"; | |
8752 | case DW_OP_lit20: | |
8753 | return "DW_OP_lit20"; | |
8754 | case DW_OP_lit21: | |
8755 | return "DW_OP_lit21"; | |
8756 | case DW_OP_lit22: | |
8757 | return "DW_OP_lit22"; | |
8758 | case DW_OP_lit23: | |
8759 | return "DW_OP_lit23"; | |
8760 | case DW_OP_lit24: | |
8761 | return "DW_OP_lit24"; | |
8762 | case DW_OP_lit25: | |
8763 | return "DW_OP_lit25"; | |
8764 | case DW_OP_lit26: | |
8765 | return "DW_OP_lit26"; | |
8766 | case DW_OP_lit27: | |
8767 | return "DW_OP_lit27"; | |
8768 | case DW_OP_lit28: | |
8769 | return "DW_OP_lit28"; | |
8770 | case DW_OP_lit29: | |
8771 | return "DW_OP_lit29"; | |
8772 | case DW_OP_lit30: | |
8773 | return "DW_OP_lit30"; | |
8774 | case DW_OP_lit31: | |
8775 | return "DW_OP_lit31"; | |
8776 | case DW_OP_reg0: | |
8777 | return "DW_OP_reg0"; | |
8778 | case DW_OP_reg1: | |
8779 | return "DW_OP_reg1"; | |
8780 | case DW_OP_reg2: | |
8781 | return "DW_OP_reg2"; | |
8782 | case DW_OP_reg3: | |
8783 | return "DW_OP_reg3"; | |
8784 | case DW_OP_reg4: | |
8785 | return "DW_OP_reg4"; | |
8786 | case DW_OP_reg5: | |
8787 | return "DW_OP_reg5"; | |
8788 | case DW_OP_reg6: | |
8789 | return "DW_OP_reg6"; | |
8790 | case DW_OP_reg7: | |
8791 | return "DW_OP_reg7"; | |
8792 | case DW_OP_reg8: | |
8793 | return "DW_OP_reg8"; | |
8794 | case DW_OP_reg9: | |
8795 | return "DW_OP_reg9"; | |
8796 | case DW_OP_reg10: | |
8797 | return "DW_OP_reg10"; | |
8798 | case DW_OP_reg11: | |
8799 | return "DW_OP_reg11"; | |
8800 | case DW_OP_reg12: | |
8801 | return "DW_OP_reg12"; | |
8802 | case DW_OP_reg13: | |
8803 | return "DW_OP_reg13"; | |
8804 | case DW_OP_reg14: | |
8805 | return "DW_OP_reg14"; | |
8806 | case DW_OP_reg15: | |
8807 | return "DW_OP_reg15"; | |
8808 | case DW_OP_reg16: | |
8809 | return "DW_OP_reg16"; | |
8810 | case DW_OP_reg17: | |
8811 | return "DW_OP_reg17"; | |
8812 | case DW_OP_reg18: | |
8813 | return "DW_OP_reg18"; | |
8814 | case DW_OP_reg19: | |
8815 | return "DW_OP_reg19"; | |
8816 | case DW_OP_reg20: | |
8817 | return "DW_OP_reg20"; | |
8818 | case DW_OP_reg21: | |
8819 | return "DW_OP_reg21"; | |
8820 | case DW_OP_reg22: | |
8821 | return "DW_OP_reg22"; | |
8822 | case DW_OP_reg23: | |
8823 | return "DW_OP_reg23"; | |
8824 | case DW_OP_reg24: | |
8825 | return "DW_OP_reg24"; | |
8826 | case DW_OP_reg25: | |
8827 | return "DW_OP_reg25"; | |
8828 | case DW_OP_reg26: | |
8829 | return "DW_OP_reg26"; | |
8830 | case DW_OP_reg27: | |
8831 | return "DW_OP_reg27"; | |
8832 | case DW_OP_reg28: | |
8833 | return "DW_OP_reg28"; | |
8834 | case DW_OP_reg29: | |
8835 | return "DW_OP_reg29"; | |
8836 | case DW_OP_reg30: | |
8837 | return "DW_OP_reg30"; | |
8838 | case DW_OP_reg31: | |
8839 | return "DW_OP_reg31"; | |
8840 | case DW_OP_breg0: | |
8841 | return "DW_OP_breg0"; | |
8842 | case DW_OP_breg1: | |
8843 | return "DW_OP_breg1"; | |
8844 | case DW_OP_breg2: | |
8845 | return "DW_OP_breg2"; | |
8846 | case DW_OP_breg3: | |
8847 | return "DW_OP_breg3"; | |
8848 | case DW_OP_breg4: | |
8849 | return "DW_OP_breg4"; | |
8850 | case DW_OP_breg5: | |
8851 | return "DW_OP_breg5"; | |
8852 | case DW_OP_breg6: | |
8853 | return "DW_OP_breg6"; | |
8854 | case DW_OP_breg7: | |
8855 | return "DW_OP_breg7"; | |
8856 | case DW_OP_breg8: | |
8857 | return "DW_OP_breg8"; | |
8858 | case DW_OP_breg9: | |
8859 | return "DW_OP_breg9"; | |
8860 | case DW_OP_breg10: | |
8861 | return "DW_OP_breg10"; | |
8862 | case DW_OP_breg11: | |
8863 | return "DW_OP_breg11"; | |
8864 | case DW_OP_breg12: | |
8865 | return "DW_OP_breg12"; | |
8866 | case DW_OP_breg13: | |
8867 | return "DW_OP_breg13"; | |
8868 | case DW_OP_breg14: | |
8869 | return "DW_OP_breg14"; | |
8870 | case DW_OP_breg15: | |
8871 | return "DW_OP_breg15"; | |
8872 | case DW_OP_breg16: | |
8873 | return "DW_OP_breg16"; | |
8874 | case DW_OP_breg17: | |
8875 | return "DW_OP_breg17"; | |
8876 | case DW_OP_breg18: | |
8877 | return "DW_OP_breg18"; | |
8878 | case DW_OP_breg19: | |
8879 | return "DW_OP_breg19"; | |
8880 | case DW_OP_breg20: | |
8881 | return "DW_OP_breg20"; | |
8882 | case DW_OP_breg21: | |
8883 | return "DW_OP_breg21"; | |
8884 | case DW_OP_breg22: | |
8885 | return "DW_OP_breg22"; | |
8886 | case DW_OP_breg23: | |
8887 | return "DW_OP_breg23"; | |
8888 | case DW_OP_breg24: | |
8889 | return "DW_OP_breg24"; | |
8890 | case DW_OP_breg25: | |
8891 | return "DW_OP_breg25"; | |
8892 | case DW_OP_breg26: | |
8893 | return "DW_OP_breg26"; | |
8894 | case DW_OP_breg27: | |
8895 | return "DW_OP_breg27"; | |
8896 | case DW_OP_breg28: | |
8897 | return "DW_OP_breg28"; | |
8898 | case DW_OP_breg29: | |
8899 | return "DW_OP_breg29"; | |
8900 | case DW_OP_breg30: | |
8901 | return "DW_OP_breg30"; | |
8902 | case DW_OP_breg31: | |
8903 | return "DW_OP_breg31"; | |
8904 | case DW_OP_regx: | |
8905 | return "DW_OP_regx"; | |
8906 | case DW_OP_fbreg: | |
8907 | return "DW_OP_fbreg"; | |
8908 | case DW_OP_bregx: | |
8909 | return "DW_OP_bregx"; | |
8910 | case DW_OP_piece: | |
8911 | return "DW_OP_piece"; | |
8912 | case DW_OP_deref_size: | |
8913 | return "DW_OP_deref_size"; | |
8914 | case DW_OP_xderef_size: | |
8915 | return "DW_OP_xderef_size"; | |
8916 | case DW_OP_nop: | |
8917 | return "DW_OP_nop"; | |
b7619582 | 8918 | /* DWARF 3 extensions. */ |
ed348acc EZ |
8919 | case DW_OP_push_object_address: |
8920 | return "DW_OP_push_object_address"; | |
8921 | case DW_OP_call2: | |
8922 | return "DW_OP_call2"; | |
8923 | case DW_OP_call4: | |
8924 | return "DW_OP_call4"; | |
8925 | case DW_OP_call_ref: | |
8926 | return "DW_OP_call_ref"; | |
b7619582 GF |
8927 | /* GNU extensions. */ |
8928 | case DW_OP_form_tls_address: | |
8929 | return "DW_OP_form_tls_address"; | |
8930 | case DW_OP_call_frame_cfa: | |
8931 | return "DW_OP_call_frame_cfa"; | |
8932 | case DW_OP_bit_piece: | |
8933 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
8934 | case DW_OP_GNU_push_tls_address: |
8935 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
8936 | case DW_OP_GNU_uninit: |
8937 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
8938 | /* HP extensions. */ |
8939 | case DW_OP_HP_is_value: | |
8940 | return "DW_OP_HP_is_value"; | |
8941 | case DW_OP_HP_fltconst4: | |
8942 | return "DW_OP_HP_fltconst4"; | |
8943 | case DW_OP_HP_fltconst8: | |
8944 | return "DW_OP_HP_fltconst8"; | |
8945 | case DW_OP_HP_mod_range: | |
8946 | return "DW_OP_HP_mod_range"; | |
8947 | case DW_OP_HP_unmod_range: | |
8948 | return "DW_OP_HP_unmod_range"; | |
8949 | case DW_OP_HP_tls: | |
8950 | return "DW_OP_HP_tls"; | |
c906108c SS |
8951 | default: |
8952 | return "OP_<unknown>"; | |
8953 | } | |
8954 | } | |
8955 | ||
8956 | static char * | |
fba45db2 | 8957 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8958 | { |
8959 | if (mybool) | |
8960 | return "TRUE"; | |
8961 | else | |
8962 | return "FALSE"; | |
8963 | } | |
8964 | ||
8965 | /* Convert a DWARF type code into its string name. */ | |
8966 | ||
8967 | static char * | |
aa1ee363 | 8968 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8969 | { |
8970 | switch (enc) | |
8971 | { | |
b7619582 GF |
8972 | case DW_ATE_void: |
8973 | return "DW_ATE_void"; | |
c906108c SS |
8974 | case DW_ATE_address: |
8975 | return "DW_ATE_address"; | |
8976 | case DW_ATE_boolean: | |
8977 | return "DW_ATE_boolean"; | |
8978 | case DW_ATE_complex_float: | |
8979 | return "DW_ATE_complex_float"; | |
8980 | case DW_ATE_float: | |
8981 | return "DW_ATE_float"; | |
8982 | case DW_ATE_signed: | |
8983 | return "DW_ATE_signed"; | |
8984 | case DW_ATE_signed_char: | |
8985 | return "DW_ATE_signed_char"; | |
8986 | case DW_ATE_unsigned: | |
8987 | return "DW_ATE_unsigned"; | |
8988 | case DW_ATE_unsigned_char: | |
8989 | return "DW_ATE_unsigned_char"; | |
b7619582 | 8990 | /* DWARF 3. */ |
d9fa45fe DC |
8991 | case DW_ATE_imaginary_float: |
8992 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
8993 | case DW_ATE_packed_decimal: |
8994 | return "DW_ATE_packed_decimal"; | |
8995 | case DW_ATE_numeric_string: | |
8996 | return "DW_ATE_numeric_string"; | |
8997 | case DW_ATE_edited: | |
8998 | return "DW_ATE_edited"; | |
8999 | case DW_ATE_signed_fixed: | |
9000 | return "DW_ATE_signed_fixed"; | |
9001 | case DW_ATE_unsigned_fixed: | |
9002 | return "DW_ATE_unsigned_fixed"; | |
9003 | case DW_ATE_decimal_float: | |
9004 | return "DW_ATE_decimal_float"; | |
9005 | /* HP extensions. */ | |
9006 | case DW_ATE_HP_float80: | |
9007 | return "DW_ATE_HP_float80"; | |
9008 | case DW_ATE_HP_complex_float80: | |
9009 | return "DW_ATE_HP_complex_float80"; | |
9010 | case DW_ATE_HP_float128: | |
9011 | return "DW_ATE_HP_float128"; | |
9012 | case DW_ATE_HP_complex_float128: | |
9013 | return "DW_ATE_HP_complex_float128"; | |
9014 | case DW_ATE_HP_floathpintel: | |
9015 | return "DW_ATE_HP_floathpintel"; | |
9016 | case DW_ATE_HP_imaginary_float80: | |
9017 | return "DW_ATE_HP_imaginary_float80"; | |
9018 | case DW_ATE_HP_imaginary_float128: | |
9019 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
9020 | default: |
9021 | return "DW_ATE_<unknown>"; | |
9022 | } | |
9023 | } | |
9024 | ||
9025 | /* Convert a DWARF call frame info operation to its string name. */ | |
9026 | ||
9027 | #if 0 | |
9028 | static char * | |
aa1ee363 | 9029 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
9030 | { |
9031 | switch (cfi_opc) | |
9032 | { | |
9033 | case DW_CFA_advance_loc: | |
9034 | return "DW_CFA_advance_loc"; | |
9035 | case DW_CFA_offset: | |
9036 | return "DW_CFA_offset"; | |
9037 | case DW_CFA_restore: | |
9038 | return "DW_CFA_restore"; | |
9039 | case DW_CFA_nop: | |
9040 | return "DW_CFA_nop"; | |
9041 | case DW_CFA_set_loc: | |
9042 | return "DW_CFA_set_loc"; | |
9043 | case DW_CFA_advance_loc1: | |
9044 | return "DW_CFA_advance_loc1"; | |
9045 | case DW_CFA_advance_loc2: | |
9046 | return "DW_CFA_advance_loc2"; | |
9047 | case DW_CFA_advance_loc4: | |
9048 | return "DW_CFA_advance_loc4"; | |
9049 | case DW_CFA_offset_extended: | |
9050 | return "DW_CFA_offset_extended"; | |
9051 | case DW_CFA_restore_extended: | |
9052 | return "DW_CFA_restore_extended"; | |
9053 | case DW_CFA_undefined: | |
9054 | return "DW_CFA_undefined"; | |
9055 | case DW_CFA_same_value: | |
9056 | return "DW_CFA_same_value"; | |
9057 | case DW_CFA_register: | |
9058 | return "DW_CFA_register"; | |
9059 | case DW_CFA_remember_state: | |
9060 | return "DW_CFA_remember_state"; | |
9061 | case DW_CFA_restore_state: | |
9062 | return "DW_CFA_restore_state"; | |
9063 | case DW_CFA_def_cfa: | |
9064 | return "DW_CFA_def_cfa"; | |
9065 | case DW_CFA_def_cfa_register: | |
9066 | return "DW_CFA_def_cfa_register"; | |
9067 | case DW_CFA_def_cfa_offset: | |
9068 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 9069 | /* DWARF 3. */ |
985cb1a3 JM |
9070 | case DW_CFA_def_cfa_expression: |
9071 | return "DW_CFA_def_cfa_expression"; | |
9072 | case DW_CFA_expression: | |
9073 | return "DW_CFA_expression"; | |
9074 | case DW_CFA_offset_extended_sf: | |
9075 | return "DW_CFA_offset_extended_sf"; | |
9076 | case DW_CFA_def_cfa_sf: | |
9077 | return "DW_CFA_def_cfa_sf"; | |
9078 | case DW_CFA_def_cfa_offset_sf: | |
9079 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
9080 | case DW_CFA_val_offset: |
9081 | return "DW_CFA_val_offset"; | |
9082 | case DW_CFA_val_offset_sf: | |
9083 | return "DW_CFA_val_offset_sf"; | |
9084 | case DW_CFA_val_expression: | |
9085 | return "DW_CFA_val_expression"; | |
9086 | /* SGI/MIPS specific. */ | |
c906108c SS |
9087 | case DW_CFA_MIPS_advance_loc8: |
9088 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 9089 | /* GNU extensions. */ |
985cb1a3 JM |
9090 | case DW_CFA_GNU_window_save: |
9091 | return "DW_CFA_GNU_window_save"; | |
9092 | case DW_CFA_GNU_args_size: | |
9093 | return "DW_CFA_GNU_args_size"; | |
9094 | case DW_CFA_GNU_negative_offset_extended: | |
9095 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
9096 | default: |
9097 | return "DW_CFA_<unknown>"; | |
9098 | } | |
9099 | } | |
9100 | #endif | |
9101 | ||
f9aca02d | 9102 | static void |
d97bc12b | 9103 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
9104 | { |
9105 | unsigned int i; | |
9106 | ||
d97bc12b DE |
9107 | print_spaces (indent, f); |
9108 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 9109 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
9110 | |
9111 | if (die->parent != NULL) | |
9112 | { | |
9113 | print_spaces (indent, f); | |
9114 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
9115 | die->parent->offset); | |
9116 | } | |
9117 | ||
9118 | print_spaces (indent, f); | |
9119 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 9120 | dwarf_bool_name (die->child != NULL)); |
c906108c | 9121 | |
d97bc12b DE |
9122 | print_spaces (indent, f); |
9123 | fprintf_unfiltered (f, " attributes:\n"); | |
9124 | ||
c906108c SS |
9125 | for (i = 0; i < die->num_attrs; ++i) |
9126 | { | |
d97bc12b DE |
9127 | print_spaces (indent, f); |
9128 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
9129 | dwarf_attr_name (die->attrs[i].name), |
9130 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 9131 | |
c906108c SS |
9132 | switch (die->attrs[i].form) |
9133 | { | |
9134 | case DW_FORM_ref_addr: | |
9135 | case DW_FORM_addr: | |
d97bc12b DE |
9136 | fprintf_unfiltered (f, "address: "); |
9137 | fputs_filtered (paddress (DW_ADDR (&die->attrs[i])), f); | |
c906108c SS |
9138 | break; |
9139 | case DW_FORM_block2: | |
9140 | case DW_FORM_block4: | |
9141 | case DW_FORM_block: | |
9142 | case DW_FORM_block1: | |
d97bc12b | 9143 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 9144 | break; |
10b3939b DJ |
9145 | case DW_FORM_ref1: |
9146 | case DW_FORM_ref2: | |
9147 | case DW_FORM_ref4: | |
d97bc12b | 9148 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
9149 | (long) (DW_ADDR (&die->attrs[i]))); |
9150 | break; | |
c906108c SS |
9151 | case DW_FORM_data1: |
9152 | case DW_FORM_data2: | |
9153 | case DW_FORM_data4: | |
ce5d95e1 | 9154 | case DW_FORM_data8: |
c906108c SS |
9155 | case DW_FORM_udata: |
9156 | case DW_FORM_sdata: | |
d97bc12b | 9157 | fprintf_unfiltered (f, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
9158 | break; |
9159 | case DW_FORM_string: | |
4bdf3d34 | 9160 | case DW_FORM_strp: |
d97bc12b | 9161 | fprintf_unfiltered (f, "string: \"%s\"", |
c906108c | 9162 | DW_STRING (&die->attrs[i]) |
c5aa993b | 9163 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
9164 | break; |
9165 | case DW_FORM_flag: | |
9166 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 9167 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 9168 | else |
d97bc12b | 9169 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 9170 | break; |
a8329558 KW |
9171 | case DW_FORM_indirect: |
9172 | /* the reader will have reduced the indirect form to | |
9173 | the "base form" so this form should not occur */ | |
d97bc12b | 9174 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 9175 | break; |
c906108c | 9176 | default: |
d97bc12b | 9177 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 9178 | die->attrs[i].form); |
d97bc12b | 9179 | break; |
c906108c | 9180 | } |
d97bc12b | 9181 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
9182 | } |
9183 | } | |
9184 | ||
f9aca02d | 9185 | static void |
d97bc12b | 9186 | dump_die_for_error (struct die_info *die) |
c906108c | 9187 | { |
d97bc12b DE |
9188 | dump_die_shallow (gdb_stderr, 0, die); |
9189 | } | |
9190 | ||
9191 | static void | |
9192 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
9193 | { | |
9194 | int indent = level * 4; | |
9195 | ||
9196 | gdb_assert (die != NULL); | |
9197 | ||
9198 | if (level >= max_level) | |
9199 | return; | |
9200 | ||
9201 | dump_die_shallow (f, indent, die); | |
9202 | ||
9203 | if (die->child != NULL) | |
c906108c | 9204 | { |
d97bc12b DE |
9205 | print_spaces (indent, f); |
9206 | fprintf_unfiltered (f, " Children:"); | |
9207 | if (level + 1 < max_level) | |
9208 | { | |
9209 | fprintf_unfiltered (f, "\n"); | |
9210 | dump_die_1 (f, level + 1, max_level, die->child); | |
9211 | } | |
9212 | else | |
9213 | { | |
9214 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
9215 | } | |
9216 | } | |
9217 | ||
9218 | if (die->sibling != NULL && level > 0) | |
9219 | { | |
9220 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
9221 | } |
9222 | } | |
9223 | ||
d97bc12b DE |
9224 | /* This is called from the pdie macro in gdbinit.in. |
9225 | It's not static so gcc will keep a copy callable from gdb. */ | |
9226 | ||
9227 | void | |
9228 | dump_die (struct die_info *die, int max_level) | |
9229 | { | |
9230 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
9231 | } | |
9232 | ||
f9aca02d | 9233 | static void |
51545339 | 9234 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9235 | { |
51545339 | 9236 | void **slot; |
c906108c | 9237 | |
51545339 DJ |
9238 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
9239 | ||
9240 | *slot = die; | |
c906108c SS |
9241 | } |
9242 | ||
9243 | static unsigned int | |
e142c38c | 9244 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
9245 | { |
9246 | unsigned int result = 0; | |
9247 | ||
9248 | switch (attr->form) | |
9249 | { | |
9250 | case DW_FORM_ref_addr: | |
c906108c SS |
9251 | case DW_FORM_ref1: |
9252 | case DW_FORM_ref2: | |
9253 | case DW_FORM_ref4: | |
613e1657 | 9254 | case DW_FORM_ref8: |
c906108c | 9255 | case DW_FORM_ref_udata: |
10b3939b | 9256 | result = DW_ADDR (attr); |
c906108c SS |
9257 | break; |
9258 | default: | |
4d3c2250 | 9259 | complaint (&symfile_complaints, |
e2e0b3e5 | 9260 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 9261 | dwarf_form_name (attr->form)); |
c906108c SS |
9262 | } |
9263 | return result; | |
9264 | } | |
9265 | ||
a02abb62 JB |
9266 | /* Return the constant value held by the given attribute. Return -1 |
9267 | if the value held by the attribute is not constant. */ | |
9268 | ||
9269 | static int | |
9270 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
9271 | { | |
9272 | if (attr->form == DW_FORM_sdata) | |
9273 | return DW_SND (attr); | |
9274 | else if (attr->form == DW_FORM_udata | |
9275 | || attr->form == DW_FORM_data1 | |
9276 | || attr->form == DW_FORM_data2 | |
9277 | || attr->form == DW_FORM_data4 | |
9278 | || attr->form == DW_FORM_data8) | |
9279 | return DW_UNSND (attr); | |
9280 | else | |
9281 | { | |
e2e0b3e5 | 9282 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
9283 | dwarf_form_name (attr->form)); |
9284 | return default_value; | |
9285 | } | |
9286 | } | |
9287 | ||
03dd20cc DJ |
9288 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
9289 | unit and add it to our queue. */ | |
9290 | ||
9291 | static void | |
9292 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
9293 | struct dwarf2_per_cu_data *per_cu) | |
9294 | { | |
9295 | /* Mark the dependence relation so that we don't flush PER_CU | |
9296 | too early. */ | |
9297 | dwarf2_add_dependence (this_cu, per_cu); | |
9298 | ||
9299 | /* If it's already on the queue, we have nothing to do. */ | |
9300 | if (per_cu->queued) | |
9301 | return; | |
9302 | ||
9303 | /* If the compilation unit is already loaded, just mark it as | |
9304 | used. */ | |
9305 | if (per_cu->cu != NULL) | |
9306 | { | |
9307 | per_cu->cu->last_used = 0; | |
9308 | return; | |
9309 | } | |
9310 | ||
9311 | /* Add it to the queue. */ | |
9312 | queue_comp_unit (per_cu, this_cu->objfile); | |
9313 | } | |
9314 | ||
f9aca02d | 9315 | static struct die_info * |
10b3939b | 9316 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
f2f0e013 | 9317 | struct dwarf2_cu **ref_cu) |
c906108c SS |
9318 | { |
9319 | struct die_info *die; | |
10b3939b | 9320 | unsigned int offset; |
10b3939b | 9321 | struct die_info temp_die; |
f2f0e013 | 9322 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b DJ |
9323 | |
9324 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
9325 | ||
45452591 | 9326 | if (! offset_in_cu_p (&cu->header, offset)) |
10b3939b DJ |
9327 | { |
9328 | struct dwarf2_per_cu_data *per_cu; | |
45452591 | 9329 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
9330 | |
9331 | /* If necessary, add it to the queue and load its DIEs. */ | |
9332 | maybe_queue_comp_unit (cu, per_cu); | |
9333 | ||
10b3939b DJ |
9334 | target_cu = per_cu->cu; |
9335 | } | |
9336 | else | |
9337 | target_cu = cu; | |
c906108c | 9338 | |
f2f0e013 | 9339 | *ref_cu = target_cu; |
51545339 DJ |
9340 | temp_die.offset = offset; |
9341 | die = htab_find_with_hash (target_cu->die_hash, &temp_die, offset); | |
9342 | if (die) | |
9343 | return die; | |
10b3939b | 9344 | |
8a3fe4f8 AC |
9345 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
9346 | "at 0x%lx [in module %s]"), | |
1d325ec1 | 9347 | (long) offset, (long) src_die->offset, cu->objfile->name); |
c906108c SS |
9348 | } |
9349 | ||
c906108c SS |
9350 | /* Decode simple location descriptions. |
9351 | Given a pointer to a dwarf block that defines a location, compute | |
9352 | the location and return the value. | |
9353 | ||
4cecd739 DJ |
9354 | NOTE drow/2003-11-18: This function is called in two situations |
9355 | now: for the address of static or global variables (partial symbols | |
9356 | only) and for offsets into structures which are expected to be | |
9357 | (more or less) constant. The partial symbol case should go away, | |
9358 | and only the constant case should remain. That will let this | |
9359 | function complain more accurately. A few special modes are allowed | |
9360 | without complaint for global variables (for instance, global | |
9361 | register values and thread-local values). | |
c906108c SS |
9362 | |
9363 | A location description containing no operations indicates that the | |
4cecd739 | 9364 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
9365 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
9366 | callers will only want a very basic result and this can become a | |
9367 | complaint. | |
c906108c | 9368 | |
c906108c SS |
9369 | Note that stack[0] is unused except as a default error return. |
9370 | Note that stack overflow is not yet handled. */ | |
9371 | ||
9372 | static CORE_ADDR | |
e7c27a73 | 9373 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 9374 | { |
e7c27a73 DJ |
9375 | struct objfile *objfile = cu->objfile; |
9376 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
9377 | int i; |
9378 | int size = blk->size; | |
fe1b8b76 | 9379 | gdb_byte *data = blk->data; |
c906108c SS |
9380 | CORE_ADDR stack[64]; |
9381 | int stacki; | |
9382 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 9383 | gdb_byte op; |
c906108c SS |
9384 | |
9385 | i = 0; | |
9386 | stacki = 0; | |
9387 | stack[stacki] = 0; | |
c906108c SS |
9388 | |
9389 | while (i < size) | |
9390 | { | |
c906108c SS |
9391 | op = data[i++]; |
9392 | switch (op) | |
9393 | { | |
f1bea926 JM |
9394 | case DW_OP_lit0: |
9395 | case DW_OP_lit1: | |
9396 | case DW_OP_lit2: | |
9397 | case DW_OP_lit3: | |
9398 | case DW_OP_lit4: | |
9399 | case DW_OP_lit5: | |
9400 | case DW_OP_lit6: | |
9401 | case DW_OP_lit7: | |
9402 | case DW_OP_lit8: | |
9403 | case DW_OP_lit9: | |
9404 | case DW_OP_lit10: | |
9405 | case DW_OP_lit11: | |
9406 | case DW_OP_lit12: | |
9407 | case DW_OP_lit13: | |
9408 | case DW_OP_lit14: | |
9409 | case DW_OP_lit15: | |
9410 | case DW_OP_lit16: | |
9411 | case DW_OP_lit17: | |
9412 | case DW_OP_lit18: | |
9413 | case DW_OP_lit19: | |
9414 | case DW_OP_lit20: | |
9415 | case DW_OP_lit21: | |
9416 | case DW_OP_lit22: | |
9417 | case DW_OP_lit23: | |
9418 | case DW_OP_lit24: | |
9419 | case DW_OP_lit25: | |
9420 | case DW_OP_lit26: | |
9421 | case DW_OP_lit27: | |
9422 | case DW_OP_lit28: | |
9423 | case DW_OP_lit29: | |
9424 | case DW_OP_lit30: | |
9425 | case DW_OP_lit31: | |
9426 | stack[++stacki] = op - DW_OP_lit0; | |
9427 | break; | |
9428 | ||
c906108c SS |
9429 | case DW_OP_reg0: |
9430 | case DW_OP_reg1: | |
9431 | case DW_OP_reg2: | |
9432 | case DW_OP_reg3: | |
9433 | case DW_OP_reg4: | |
9434 | case DW_OP_reg5: | |
9435 | case DW_OP_reg6: | |
9436 | case DW_OP_reg7: | |
9437 | case DW_OP_reg8: | |
9438 | case DW_OP_reg9: | |
9439 | case DW_OP_reg10: | |
9440 | case DW_OP_reg11: | |
9441 | case DW_OP_reg12: | |
9442 | case DW_OP_reg13: | |
9443 | case DW_OP_reg14: | |
9444 | case DW_OP_reg15: | |
9445 | case DW_OP_reg16: | |
9446 | case DW_OP_reg17: | |
9447 | case DW_OP_reg18: | |
9448 | case DW_OP_reg19: | |
9449 | case DW_OP_reg20: | |
9450 | case DW_OP_reg21: | |
9451 | case DW_OP_reg22: | |
9452 | case DW_OP_reg23: | |
9453 | case DW_OP_reg24: | |
9454 | case DW_OP_reg25: | |
9455 | case DW_OP_reg26: | |
9456 | case DW_OP_reg27: | |
9457 | case DW_OP_reg28: | |
9458 | case DW_OP_reg29: | |
9459 | case DW_OP_reg30: | |
9460 | case DW_OP_reg31: | |
c906108c | 9461 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9462 | if (i < size) |
9463 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9464 | break; |
9465 | ||
9466 | case DW_OP_regx: | |
c906108c SS |
9467 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9468 | i += bytes_read; | |
c906108c | 9469 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9470 | if (i < size) |
9471 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9472 | break; |
9473 | ||
9474 | case DW_OP_addr: | |
107d2387 | 9475 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9476 | cu, &bytes_read); |
107d2387 | 9477 | i += bytes_read; |
c906108c SS |
9478 | break; |
9479 | ||
9480 | case DW_OP_const1u: | |
9481 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9482 | i += 1; | |
9483 | break; | |
9484 | ||
9485 | case DW_OP_const1s: | |
9486 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9487 | i += 1; | |
9488 | break; | |
9489 | ||
9490 | case DW_OP_const2u: | |
9491 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9492 | i += 2; | |
9493 | break; | |
9494 | ||
9495 | case DW_OP_const2s: | |
9496 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9497 | i += 2; | |
9498 | break; | |
9499 | ||
9500 | case DW_OP_const4u: | |
9501 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9502 | i += 4; | |
9503 | break; | |
9504 | ||
9505 | case DW_OP_const4s: | |
9506 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9507 | i += 4; | |
9508 | break; | |
9509 | ||
9510 | case DW_OP_constu: | |
9511 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9512 | &bytes_read); |
c906108c SS |
9513 | i += bytes_read; |
9514 | break; | |
9515 | ||
9516 | case DW_OP_consts: | |
9517 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9518 | i += bytes_read; | |
9519 | break; | |
9520 | ||
f1bea926 JM |
9521 | case DW_OP_dup: |
9522 | stack[stacki + 1] = stack[stacki]; | |
9523 | stacki++; | |
9524 | break; | |
9525 | ||
c906108c SS |
9526 | case DW_OP_plus: |
9527 | stack[stacki - 1] += stack[stacki]; | |
9528 | stacki--; | |
9529 | break; | |
9530 | ||
9531 | case DW_OP_plus_uconst: | |
9532 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9533 | i += bytes_read; | |
9534 | break; | |
9535 | ||
9536 | case DW_OP_minus: | |
f1bea926 | 9537 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9538 | stacki--; |
9539 | break; | |
9540 | ||
7a292a7a | 9541 | case DW_OP_deref: |
7a292a7a | 9542 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9543 | this using GDB's address_class enum. This is valid for partial |
9544 | global symbols, although the variable's address will be bogus | |
9545 | in the psymtab. */ | |
7a292a7a | 9546 | if (i < size) |
4d3c2250 | 9547 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9548 | break; |
9549 | ||
9d774e44 | 9550 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9551 | /* The top of the stack has the offset from the beginning |
9552 | of the thread control block at which the variable is located. */ | |
9553 | /* Nothing should follow this operator, so the top of stack would | |
9554 | be returned. */ | |
4cecd739 DJ |
9555 | /* This is valid for partial global symbols, but the variable's |
9556 | address will be bogus in the psymtab. */ | |
9d774e44 | 9557 | if (i < size) |
4d3c2250 | 9558 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9559 | break; |
9560 | ||
42be36b3 CT |
9561 | case DW_OP_GNU_uninit: |
9562 | break; | |
9563 | ||
c906108c | 9564 | default: |
e2e0b3e5 | 9565 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9566 | dwarf_stack_op_name (op)); |
c906108c SS |
9567 | return (stack[stacki]); |
9568 | } | |
9569 | } | |
9570 | return (stack[stacki]); | |
9571 | } | |
9572 | ||
9573 | /* memory allocation interface */ | |
9574 | ||
c906108c | 9575 | static struct dwarf_block * |
7b5a2f43 | 9576 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9577 | { |
9578 | struct dwarf_block *blk; | |
9579 | ||
9580 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9581 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9582 | return (blk); |
9583 | } | |
9584 | ||
9585 | static struct abbrev_info * | |
f3dd6933 | 9586 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9587 | { |
9588 | struct abbrev_info *abbrev; | |
9589 | ||
f3dd6933 DJ |
9590 | abbrev = (struct abbrev_info *) |
9591 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9592 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9593 | return (abbrev); | |
9594 | } | |
9595 | ||
9596 | static struct die_info * | |
b60c80d6 | 9597 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
9598 | { |
9599 | struct die_info *die; | |
b60c80d6 DJ |
9600 | size_t size = sizeof (struct die_info); |
9601 | ||
9602 | if (num_attrs > 1) | |
9603 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 9604 | |
b60c80d6 | 9605 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
9606 | memset (die, 0, sizeof (struct die_info)); |
9607 | return (die); | |
9608 | } | |
2e276125 JB |
9609 | |
9610 | \f | |
9611 | /* Macro support. */ | |
9612 | ||
9613 | ||
9614 | /* Return the full name of file number I in *LH's file name table. | |
9615 | Use COMP_DIR as the name of the current directory of the | |
9616 | compilation. The result is allocated using xmalloc; the caller is | |
9617 | responsible for freeing it. */ | |
9618 | static char * | |
9619 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9620 | { | |
6a83a1e6 EZ |
9621 | /* Is the file number a valid index into the line header's file name |
9622 | table? Remember that file numbers start with one, not zero. */ | |
9623 | if (1 <= file && file <= lh->num_file_names) | |
9624 | { | |
9625 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9626 | |
6a83a1e6 EZ |
9627 | if (IS_ABSOLUTE_PATH (fe->name)) |
9628 | return xstrdup (fe->name); | |
9629 | else | |
9630 | { | |
9631 | const char *dir; | |
9632 | int dir_len; | |
9633 | char *full_name; | |
9634 | ||
9635 | if (fe->dir_index) | |
9636 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9637 | else | |
9638 | dir = comp_dir; | |
9639 | ||
9640 | if (dir) | |
9641 | { | |
9642 | dir_len = strlen (dir); | |
9643 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9644 | strcpy (full_name, dir); | |
9645 | full_name[dir_len] = '/'; | |
9646 | strcpy (full_name + dir_len + 1, fe->name); | |
9647 | return full_name; | |
9648 | } | |
9649 | else | |
9650 | return xstrdup (fe->name); | |
9651 | } | |
9652 | } | |
2e276125 JB |
9653 | else |
9654 | { | |
6a83a1e6 EZ |
9655 | /* The compiler produced a bogus file number. We can at least |
9656 | record the macro definitions made in the file, even if we | |
9657 | won't be able to find the file by name. */ | |
9658 | char fake_name[80]; | |
9659 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9660 | |
6a83a1e6 EZ |
9661 | complaint (&symfile_complaints, |
9662 | _("bad file number in macro information (%d)"), | |
9663 | file); | |
2e276125 | 9664 | |
6a83a1e6 | 9665 | return xstrdup (fake_name); |
2e276125 JB |
9666 | } |
9667 | } | |
9668 | ||
9669 | ||
9670 | static struct macro_source_file * | |
9671 | macro_start_file (int file, int line, | |
9672 | struct macro_source_file *current_file, | |
9673 | const char *comp_dir, | |
9674 | struct line_header *lh, struct objfile *objfile) | |
9675 | { | |
9676 | /* The full name of this source file. */ | |
9677 | char *full_name = file_full_name (file, lh, comp_dir); | |
9678 | ||
9679 | /* We don't create a macro table for this compilation unit | |
9680 | at all until we actually get a filename. */ | |
9681 | if (! pending_macros) | |
4a146b47 | 9682 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9683 | objfile->macro_cache); |
2e276125 JB |
9684 | |
9685 | if (! current_file) | |
9686 | /* If we have no current file, then this must be the start_file | |
9687 | directive for the compilation unit's main source file. */ | |
9688 | current_file = macro_set_main (pending_macros, full_name); | |
9689 | else | |
9690 | current_file = macro_include (current_file, line, full_name); | |
9691 | ||
9692 | xfree (full_name); | |
9693 | ||
9694 | return current_file; | |
9695 | } | |
9696 | ||
9697 | ||
9698 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9699 | followed by a null byte. */ | |
9700 | static char * | |
9701 | copy_string (const char *buf, int len) | |
9702 | { | |
9703 | char *s = xmalloc (len + 1); | |
9704 | memcpy (s, buf, len); | |
9705 | s[len] = '\0'; | |
9706 | ||
9707 | return s; | |
9708 | } | |
9709 | ||
9710 | ||
9711 | static const char * | |
9712 | consume_improper_spaces (const char *p, const char *body) | |
9713 | { | |
9714 | if (*p == ' ') | |
9715 | { | |
4d3c2250 | 9716 | complaint (&symfile_complaints, |
e2e0b3e5 | 9717 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9718 | body); |
2e276125 JB |
9719 | |
9720 | while (*p == ' ') | |
9721 | p++; | |
9722 | } | |
9723 | ||
9724 | return p; | |
9725 | } | |
9726 | ||
9727 | ||
9728 | static void | |
9729 | parse_macro_definition (struct macro_source_file *file, int line, | |
9730 | const char *body) | |
9731 | { | |
9732 | const char *p; | |
9733 | ||
9734 | /* The body string takes one of two forms. For object-like macro | |
9735 | definitions, it should be: | |
9736 | ||
9737 | <macro name> " " <definition> | |
9738 | ||
9739 | For function-like macro definitions, it should be: | |
9740 | ||
9741 | <macro name> "() " <definition> | |
9742 | or | |
9743 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9744 | ||
9745 | Spaces may appear only where explicitly indicated, and in the | |
9746 | <definition>. | |
9747 | ||
9748 | The Dwarf 2 spec says that an object-like macro's name is always | |
9749 | followed by a space, but versions of GCC around March 2002 omit | |
9750 | the space when the macro's definition is the empty string. | |
9751 | ||
9752 | The Dwarf 2 spec says that there should be no spaces between the | |
9753 | formal arguments in a function-like macro's formal argument list, | |
9754 | but versions of GCC around March 2002 include spaces after the | |
9755 | commas. */ | |
9756 | ||
9757 | ||
9758 | /* Find the extent of the macro name. The macro name is terminated | |
9759 | by either a space or null character (for an object-like macro) or | |
9760 | an opening paren (for a function-like macro). */ | |
9761 | for (p = body; *p; p++) | |
9762 | if (*p == ' ' || *p == '(') | |
9763 | break; | |
9764 | ||
9765 | if (*p == ' ' || *p == '\0') | |
9766 | { | |
9767 | /* It's an object-like macro. */ | |
9768 | int name_len = p - body; | |
9769 | char *name = copy_string (body, name_len); | |
9770 | const char *replacement; | |
9771 | ||
9772 | if (*p == ' ') | |
9773 | replacement = body + name_len + 1; | |
9774 | else | |
9775 | { | |
4d3c2250 | 9776 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9777 | replacement = body + name_len; |
9778 | } | |
9779 | ||
9780 | macro_define_object (file, line, name, replacement); | |
9781 | ||
9782 | xfree (name); | |
9783 | } | |
9784 | else if (*p == '(') | |
9785 | { | |
9786 | /* It's a function-like macro. */ | |
9787 | char *name = copy_string (body, p - body); | |
9788 | int argc = 0; | |
9789 | int argv_size = 1; | |
9790 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9791 | ||
9792 | p++; | |
9793 | ||
9794 | p = consume_improper_spaces (p, body); | |
9795 | ||
9796 | /* Parse the formal argument list. */ | |
9797 | while (*p && *p != ')') | |
9798 | { | |
9799 | /* Find the extent of the current argument name. */ | |
9800 | const char *arg_start = p; | |
9801 | ||
9802 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9803 | p++; | |
9804 | ||
9805 | if (! *p || p == arg_start) | |
4d3c2250 | 9806 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9807 | else |
9808 | { | |
9809 | /* Make sure argv has room for the new argument. */ | |
9810 | if (argc >= argv_size) | |
9811 | { | |
9812 | argv_size *= 2; | |
9813 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9814 | } | |
9815 | ||
9816 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9817 | } | |
9818 | ||
9819 | p = consume_improper_spaces (p, body); | |
9820 | ||
9821 | /* Consume the comma, if present. */ | |
9822 | if (*p == ',') | |
9823 | { | |
9824 | p++; | |
9825 | ||
9826 | p = consume_improper_spaces (p, body); | |
9827 | } | |
9828 | } | |
9829 | ||
9830 | if (*p == ')') | |
9831 | { | |
9832 | p++; | |
9833 | ||
9834 | if (*p == ' ') | |
9835 | /* Perfectly formed definition, no complaints. */ | |
9836 | macro_define_function (file, line, name, | |
9837 | argc, (const char **) argv, | |
9838 | p + 1); | |
9839 | else if (*p == '\0') | |
9840 | { | |
9841 | /* Complain, but do define it. */ | |
4d3c2250 | 9842 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9843 | macro_define_function (file, line, name, |
9844 | argc, (const char **) argv, | |
9845 | p); | |
9846 | } | |
9847 | else | |
9848 | /* Just complain. */ | |
4d3c2250 | 9849 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9850 | } |
9851 | else | |
9852 | /* Just complain. */ | |
4d3c2250 | 9853 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9854 | |
9855 | xfree (name); | |
9856 | { | |
9857 | int i; | |
9858 | ||
9859 | for (i = 0; i < argc; i++) | |
9860 | xfree (argv[i]); | |
9861 | } | |
9862 | xfree (argv); | |
9863 | } | |
9864 | else | |
4d3c2250 | 9865 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9866 | } |
9867 | ||
9868 | ||
9869 | static void | |
9870 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9871 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9872 | struct dwarf2_cu *cu) |
2e276125 | 9873 | { |
fe1b8b76 | 9874 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9875 | struct macro_source_file *current_file = 0; |
9876 | ||
6502dd73 | 9877 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9878 | { |
e2e0b3e5 | 9879 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9880 | return; |
9881 | } | |
9882 | ||
6502dd73 DJ |
9883 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9884 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9885 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9886 | |
9887 | for (;;) | |
9888 | { | |
9889 | enum dwarf_macinfo_record_type macinfo_type; | |
9890 | ||
9891 | /* Do we at least have room for a macinfo type byte? */ | |
9892 | if (mac_ptr >= mac_end) | |
9893 | { | |
4d3c2250 | 9894 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9895 | return; |
9896 | } | |
9897 | ||
9898 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9899 | mac_ptr++; | |
9900 | ||
9901 | switch (macinfo_type) | |
9902 | { | |
9903 | /* A zero macinfo type indicates the end of the macro | |
9904 | information. */ | |
9905 | case 0: | |
9906 | return; | |
9907 | ||
9908 | case DW_MACINFO_define: | |
9909 | case DW_MACINFO_undef: | |
9910 | { | |
891d2f0b | 9911 | unsigned int bytes_read; |
2e276125 JB |
9912 | int line; |
9913 | char *body; | |
9914 | ||
9915 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9916 | mac_ptr += bytes_read; | |
9917 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9918 | mac_ptr += bytes_read; | |
9919 | ||
9920 | if (! current_file) | |
4d3c2250 | 9921 | complaint (&symfile_complaints, |
e2e0b3e5 | 9922 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9923 | macinfo_type == |
9924 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9925 | DW_MACINFO_undef ? "undefinition" : | |
9926 | "something-or-other", body); | |
2e276125 JB |
9927 | else |
9928 | { | |
9929 | if (macinfo_type == DW_MACINFO_define) | |
9930 | parse_macro_definition (current_file, line, body); | |
9931 | else if (macinfo_type == DW_MACINFO_undef) | |
9932 | macro_undef (current_file, line, body); | |
9933 | } | |
9934 | } | |
9935 | break; | |
9936 | ||
9937 | case DW_MACINFO_start_file: | |
9938 | { | |
891d2f0b | 9939 | unsigned int bytes_read; |
2e276125 JB |
9940 | int line, file; |
9941 | ||
9942 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9943 | mac_ptr += bytes_read; | |
9944 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9945 | mac_ptr += bytes_read; | |
9946 | ||
9947 | current_file = macro_start_file (file, line, | |
9948 | current_file, comp_dir, | |
e7c27a73 | 9949 | lh, cu->objfile); |
2e276125 JB |
9950 | } |
9951 | break; | |
9952 | ||
9953 | case DW_MACINFO_end_file: | |
9954 | if (! current_file) | |
4d3c2250 | 9955 | complaint (&symfile_complaints, |
e2e0b3e5 | 9956 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9957 | else |
9958 | { | |
9959 | current_file = current_file->included_by; | |
9960 | if (! current_file) | |
9961 | { | |
9962 | enum dwarf_macinfo_record_type next_type; | |
9963 | ||
9964 | /* GCC circa March 2002 doesn't produce the zero | |
9965 | type byte marking the end of the compilation | |
9966 | unit. Complain if it's not there, but exit no | |
9967 | matter what. */ | |
9968 | ||
9969 | /* Do we at least have room for a macinfo type byte? */ | |
9970 | if (mac_ptr >= mac_end) | |
9971 | { | |
4d3c2250 | 9972 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9973 | return; |
9974 | } | |
9975 | ||
9976 | /* We don't increment mac_ptr here, so this is just | |
9977 | a look-ahead. */ | |
9978 | next_type = read_1_byte (abfd, mac_ptr); | |
9979 | if (next_type != 0) | |
4d3c2250 | 9980 | complaint (&symfile_complaints, |
e2e0b3e5 | 9981 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9982 | |
9983 | return; | |
9984 | } | |
9985 | } | |
9986 | break; | |
9987 | ||
9988 | case DW_MACINFO_vendor_ext: | |
9989 | { | |
891d2f0b | 9990 | unsigned int bytes_read; |
2e276125 JB |
9991 | int constant; |
9992 | char *string; | |
9993 | ||
9994 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9995 | mac_ptr += bytes_read; | |
9996 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9997 | mac_ptr += bytes_read; | |
9998 | ||
9999 | /* We don't recognize any vendor extensions. */ | |
10000 | } | |
10001 | break; | |
10002 | } | |
10003 | } | |
10004 | } | |
8e19ed76 PS |
10005 | |
10006 | /* Check if the attribute's form is a DW_FORM_block* | |
10007 | if so return true else false. */ | |
10008 | static int | |
10009 | attr_form_is_block (struct attribute *attr) | |
10010 | { | |
10011 | return (attr == NULL ? 0 : | |
10012 | attr->form == DW_FORM_block1 | |
10013 | || attr->form == DW_FORM_block2 | |
10014 | || attr->form == DW_FORM_block4 | |
10015 | || attr->form == DW_FORM_block); | |
10016 | } | |
4c2df51b | 10017 | |
c6a0999f JB |
10018 | /* Return non-zero if ATTR's value is a section offset --- classes |
10019 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
10020 | You may use DW_UNSND (attr) to retrieve such offsets. | |
10021 | ||
10022 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
10023 | may have a value that belongs to more than one of these classes; it | |
10024 | would be ambiguous if we did, because we use the same forms for all | |
10025 | of them. */ | |
3690dd37 JB |
10026 | static int |
10027 | attr_form_is_section_offset (struct attribute *attr) | |
10028 | { | |
10029 | return (attr->form == DW_FORM_data4 | |
10030 | || attr->form == DW_FORM_data8); | |
10031 | } | |
10032 | ||
10033 | ||
10034 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
10035 | zero otherwise. When this function returns true, you can apply | |
10036 | dwarf2_get_attr_constant_value to it. | |
10037 | ||
10038 | However, note that for some attributes you must check | |
10039 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
10040 | and DW_FORM_data8 are members of both the constant class, and of | |
10041 | the classes that contain offsets into other debug sections | |
10042 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
10043 | that, if an attribute's can be either a constant or one of the | |
10044 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
10045 | taken as section offsets, not constants. */ | |
10046 | static int | |
10047 | attr_form_is_constant (struct attribute *attr) | |
10048 | { | |
10049 | switch (attr->form) | |
10050 | { | |
10051 | case DW_FORM_sdata: | |
10052 | case DW_FORM_udata: | |
10053 | case DW_FORM_data1: | |
10054 | case DW_FORM_data2: | |
10055 | case DW_FORM_data4: | |
10056 | case DW_FORM_data8: | |
10057 | return 1; | |
10058 | default: | |
10059 | return 0; | |
10060 | } | |
10061 | } | |
10062 | ||
4c2df51b DJ |
10063 | static void |
10064 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10065 | struct dwarf2_cu *cu) |
4c2df51b | 10066 | { |
3690dd37 | 10067 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
10068 | /* ".debug_loc" may not exist at all, or the offset may be outside |
10069 | the section. If so, fall through to the complaint in the | |
10070 | other branch. */ | |
10071 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 10072 | { |
0d53c4c4 | 10073 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 10074 | |
4a146b47 | 10075 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 10076 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
10077 | baton->per_cu = cu->per_cu; |
10078 | gdb_assert (baton->per_cu); | |
4c2df51b | 10079 | |
0d53c4c4 DJ |
10080 | /* We don't know how long the location list is, but make sure we |
10081 | don't run off the edge of the section. */ | |
6502dd73 DJ |
10082 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
10083 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
d00adf39 DE |
10084 | baton->base_address = cu->base_address; |
10085 | if (cu->base_known == 0) | |
0d53c4c4 | 10086 | complaint (&symfile_complaints, |
e2e0b3e5 | 10087 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 10088 | |
a67af2b9 | 10089 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
10090 | SYMBOL_LOCATION_BATON (sym) = baton; |
10091 | } | |
10092 | else | |
10093 | { | |
10094 | struct dwarf2_locexpr_baton *baton; | |
10095 | ||
4a146b47 | 10096 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 10097 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
10098 | baton->per_cu = cu->per_cu; |
10099 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
10100 | |
10101 | if (attr_form_is_block (attr)) | |
10102 | { | |
10103 | /* Note that we're just copying the block's data pointer | |
10104 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
10105 | info_buffer for SYM's objfile; right now we never release |
10106 | that buffer, but when we do clean up properly this may | |
10107 | need to change. */ | |
0d53c4c4 DJ |
10108 | baton->size = DW_BLOCK (attr)->size; |
10109 | baton->data = DW_BLOCK (attr)->data; | |
10110 | } | |
10111 | else | |
10112 | { | |
10113 | dwarf2_invalid_attrib_class_complaint ("location description", | |
10114 | SYMBOL_NATURAL_NAME (sym)); | |
10115 | baton->size = 0; | |
10116 | baton->data = NULL; | |
10117 | } | |
10118 | ||
a67af2b9 | 10119 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
10120 | SYMBOL_LOCATION_BATON (sym) = baton; |
10121 | } | |
4c2df51b | 10122 | } |
6502dd73 | 10123 | |
ae0d2f24 UW |
10124 | /* Return the OBJFILE associated with the compilation unit CU. */ |
10125 | ||
10126 | struct objfile * | |
10127 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
10128 | { | |
10129 | struct objfile *objfile = per_cu->psymtab->objfile; | |
10130 | ||
10131 | /* Return the master objfile, so that we can report and look up the | |
10132 | correct file containing this variable. */ | |
10133 | if (objfile->separate_debug_objfile_backlink) | |
10134 | objfile = objfile->separate_debug_objfile_backlink; | |
10135 | ||
10136 | return objfile; | |
10137 | } | |
10138 | ||
10139 | /* Return the address size given in the compilation unit header for CU. */ | |
10140 | ||
10141 | CORE_ADDR | |
10142 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
10143 | { | |
10144 | if (per_cu->cu) | |
10145 | return per_cu->cu->header.addr_size; | |
10146 | else | |
10147 | { | |
10148 | /* If the CU is not currently read in, we re-read its header. */ | |
10149 | struct objfile *objfile = per_cu->psymtab->objfile; | |
10150 | struct dwarf2_per_objfile *per_objfile | |
10151 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
10152 | gdb_byte *info_ptr = per_objfile->info_buffer + per_cu->offset; | |
10153 | ||
10154 | struct comp_unit_head cu_header; | |
10155 | memset (&cu_header, 0, sizeof cu_header); | |
10156 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
10157 | return cu_header.addr_size; | |
10158 | } | |
10159 | } | |
10160 | ||
ae038cb0 | 10161 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 10162 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
10163 | |
10164 | static struct dwarf2_per_cu_data * | |
10165 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
10166 | struct objfile *objfile) | |
10167 | { | |
10168 | struct dwarf2_per_cu_data *this_cu; | |
10169 | int low, high; | |
10170 | ||
ae038cb0 DJ |
10171 | low = 0; |
10172 | high = dwarf2_per_objfile->n_comp_units - 1; | |
10173 | while (high > low) | |
10174 | { | |
10175 | int mid = low + (high - low) / 2; | |
10176 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
10177 | high = mid; | |
10178 | else | |
10179 | low = mid + 1; | |
10180 | } | |
10181 | gdb_assert (low == high); | |
10182 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
10183 | { | |
10b3939b | 10184 | if (low == 0) |
8a3fe4f8 AC |
10185 | error (_("Dwarf Error: could not find partial DIE containing " |
10186 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
10187 | (long) offset, bfd_get_filename (objfile->obfd)); |
10188 | ||
ae038cb0 DJ |
10189 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
10190 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
10191 | } | |
10192 | else | |
10193 | { | |
10194 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
10195 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
10196 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 10197 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
10198 | gdb_assert (offset < this_cu->offset + this_cu->length); |
10199 | return this_cu; | |
10200 | } | |
10201 | } | |
10202 | ||
10b3939b DJ |
10203 | /* Locate the compilation unit from OBJFILE which is located at exactly |
10204 | OFFSET. Raises an error on failure. */ | |
10205 | ||
ae038cb0 DJ |
10206 | static struct dwarf2_per_cu_data * |
10207 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
10208 | { | |
10209 | struct dwarf2_per_cu_data *this_cu; | |
10210 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
10211 | if (this_cu->offset != offset) | |
8a3fe4f8 | 10212 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
10213 | return this_cu; |
10214 | } | |
10215 | ||
10216 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
10217 | of compilation units, but we don't remove it from the read_in_chain; | |
10218 | the caller is responsible for that. */ | |
10219 | ||
10220 | static void | |
10221 | free_one_comp_unit (void *data) | |
10222 | { | |
10223 | struct dwarf2_cu *cu = data; | |
10224 | ||
10225 | if (cu->per_cu != NULL) | |
10226 | cu->per_cu->cu = NULL; | |
10227 | cu->per_cu = NULL; | |
10228 | ||
10229 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10230 | ||
10231 | xfree (cu); | |
10232 | } | |
10233 | ||
72bf9492 | 10234 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
10235 | when we're finished with it. We can't free the pointer itself, but be |
10236 | sure to unlink it from the cache. Also release any associated storage | |
10237 | and perform cache maintenance. | |
72bf9492 DJ |
10238 | |
10239 | Only used during partial symbol parsing. */ | |
10240 | ||
10241 | static void | |
10242 | free_stack_comp_unit (void *data) | |
10243 | { | |
10244 | struct dwarf2_cu *cu = data; | |
10245 | ||
10246 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10247 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
10248 | |
10249 | if (cu->per_cu != NULL) | |
10250 | { | |
10251 | /* This compilation unit is on the stack in our caller, so we | |
10252 | should not xfree it. Just unlink it. */ | |
10253 | cu->per_cu->cu = NULL; | |
10254 | cu->per_cu = NULL; | |
10255 | ||
10256 | /* If we had a per-cu pointer, then we may have other compilation | |
10257 | units loaded, so age them now. */ | |
10258 | age_cached_comp_units (); | |
10259 | } | |
10260 | } | |
10261 | ||
10262 | /* Free all cached compilation units. */ | |
10263 | ||
10264 | static void | |
10265 | free_cached_comp_units (void *data) | |
10266 | { | |
10267 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10268 | ||
10269 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10270 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10271 | while (per_cu != NULL) | |
10272 | { | |
10273 | struct dwarf2_per_cu_data *next_cu; | |
10274 | ||
10275 | next_cu = per_cu->cu->read_in_chain; | |
10276 | ||
10277 | free_one_comp_unit (per_cu->cu); | |
10278 | *last_chain = next_cu; | |
10279 | ||
10280 | per_cu = next_cu; | |
10281 | } | |
10282 | } | |
10283 | ||
10284 | /* Increase the age counter on each cached compilation unit, and free | |
10285 | any that are too old. */ | |
10286 | ||
10287 | static void | |
10288 | age_cached_comp_units (void) | |
10289 | { | |
10290 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10291 | ||
10292 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
10293 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10294 | while (per_cu != NULL) | |
10295 | { | |
10296 | per_cu->cu->last_used ++; | |
10297 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
10298 | dwarf2_mark (per_cu->cu); | |
10299 | per_cu = per_cu->cu->read_in_chain; | |
10300 | } | |
10301 | ||
10302 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10303 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10304 | while (per_cu != NULL) | |
10305 | { | |
10306 | struct dwarf2_per_cu_data *next_cu; | |
10307 | ||
10308 | next_cu = per_cu->cu->read_in_chain; | |
10309 | ||
10310 | if (!per_cu->cu->mark) | |
10311 | { | |
10312 | free_one_comp_unit (per_cu->cu); | |
10313 | *last_chain = next_cu; | |
10314 | } | |
10315 | else | |
10316 | last_chain = &per_cu->cu->read_in_chain; | |
10317 | ||
10318 | per_cu = next_cu; | |
10319 | } | |
10320 | } | |
10321 | ||
10322 | /* Remove a single compilation unit from the cache. */ | |
10323 | ||
10324 | static void | |
10325 | free_one_cached_comp_unit (void *target_cu) | |
10326 | { | |
10327 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10328 | ||
10329 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10330 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10331 | while (per_cu != NULL) | |
10332 | { | |
10333 | struct dwarf2_per_cu_data *next_cu; | |
10334 | ||
10335 | next_cu = per_cu->cu->read_in_chain; | |
10336 | ||
10337 | if (per_cu->cu == target_cu) | |
10338 | { | |
10339 | free_one_comp_unit (per_cu->cu); | |
10340 | *last_chain = next_cu; | |
10341 | break; | |
10342 | } | |
10343 | else | |
10344 | last_chain = &per_cu->cu->read_in_chain; | |
10345 | ||
10346 | per_cu = next_cu; | |
10347 | } | |
10348 | } | |
10349 | ||
fe3e1990 DJ |
10350 | /* Release all extra memory associated with OBJFILE. */ |
10351 | ||
10352 | void | |
10353 | dwarf2_free_objfile (struct objfile *objfile) | |
10354 | { | |
10355 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10356 | ||
10357 | if (dwarf2_per_objfile == NULL) | |
10358 | return; | |
10359 | ||
10360 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
10361 | free_cached_comp_units (NULL); | |
10362 | ||
10363 | /* Everything else should be on the objfile obstack. */ | |
10364 | } | |
10365 | ||
1c379e20 DJ |
10366 | /* A pair of DIE offset and GDB type pointer. We store these |
10367 | in a hash table separate from the DIEs, and preserve them | |
10368 | when the DIEs are flushed out of cache. */ | |
10369 | ||
10370 | struct dwarf2_offset_and_type | |
10371 | { | |
10372 | unsigned int offset; | |
10373 | struct type *type; | |
10374 | }; | |
10375 | ||
10376 | /* Hash function for a dwarf2_offset_and_type. */ | |
10377 | ||
10378 | static hashval_t | |
10379 | offset_and_type_hash (const void *item) | |
10380 | { | |
10381 | const struct dwarf2_offset_and_type *ofs = item; | |
10382 | return ofs->offset; | |
10383 | } | |
10384 | ||
10385 | /* Equality function for a dwarf2_offset_and_type. */ | |
10386 | ||
10387 | static int | |
10388 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
10389 | { | |
10390 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
10391 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
10392 | return ofs_lhs->offset == ofs_rhs->offset; | |
10393 | } | |
10394 | ||
10395 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
f792889a | 10396 | table if necessary. For convenience, return TYPE. */ |
1c379e20 | 10397 | |
f792889a | 10398 | static struct type * |
1c379e20 DJ |
10399 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
10400 | { | |
10401 | struct dwarf2_offset_and_type **slot, ofs; | |
10402 | ||
f792889a DJ |
10403 | if (cu->type_hash == NULL) |
10404 | { | |
10405 | gdb_assert (cu->per_cu != NULL); | |
10406 | cu->per_cu->type_hash | |
10407 | = htab_create_alloc_ex (cu->header.length / 24, | |
10408 | offset_and_type_hash, | |
10409 | offset_and_type_eq, | |
10410 | NULL, | |
10411 | &cu->objfile->objfile_obstack, | |
10412 | hashtab_obstack_allocate, | |
10413 | dummy_obstack_deallocate); | |
10414 | cu->type_hash = cu->per_cu->type_hash; | |
10415 | } | |
1c379e20 DJ |
10416 | |
10417 | ofs.offset = die->offset; | |
10418 | ofs.type = type; | |
10419 | slot = (struct dwarf2_offset_and_type **) | |
f792889a | 10420 | htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT); |
1c379e20 DJ |
10421 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); |
10422 | **slot = ofs; | |
f792889a | 10423 | return type; |
1c379e20 DJ |
10424 | } |
10425 | ||
f792889a DJ |
10426 | /* Find the type for DIE in CU's type_hash, or return NULL if DIE does |
10427 | not have a saved type. */ | |
1c379e20 DJ |
10428 | |
10429 | static struct type * | |
f792889a | 10430 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) |
1c379e20 DJ |
10431 | { |
10432 | struct dwarf2_offset_and_type *slot, ofs; | |
f792889a DJ |
10433 | htab_t type_hash = cu->type_hash; |
10434 | ||
10435 | if (type_hash == NULL) | |
10436 | return NULL; | |
1c379e20 DJ |
10437 | |
10438 | ofs.offset = die->offset; | |
10439 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
10440 | if (slot) | |
10441 | return slot->type; | |
10442 | else | |
10443 | return NULL; | |
10444 | } | |
10445 | ||
10b3939b DJ |
10446 | /* Set the mark field in CU and in every other compilation unit in the |
10447 | cache that we must keep because we are keeping CU. */ | |
10448 | ||
10449 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
10450 | ||
10451 | static void | |
10452 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
10453 | struct dwarf2_per_cu_data *ref_per_cu) | |
10454 | { | |
10455 | void **slot; | |
10456 | ||
10457 | if (cu->dependencies == NULL) | |
10458 | cu->dependencies | |
10459 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
10460 | NULL, &cu->comp_unit_obstack, | |
10461 | hashtab_obstack_allocate, | |
10462 | dummy_obstack_deallocate); | |
10463 | ||
10464 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
10465 | if (*slot == NULL) | |
10466 | *slot = ref_per_cu; | |
10467 | } | |
1c379e20 | 10468 | |
ae038cb0 DJ |
10469 | /* Set the mark field in CU and in every other compilation unit in the |
10470 | cache that we must keep because we are keeping CU. */ | |
10471 | ||
10b3939b DJ |
10472 | static int |
10473 | dwarf2_mark_helper (void **slot, void *data) | |
10474 | { | |
10475 | struct dwarf2_per_cu_data *per_cu; | |
10476 | ||
10477 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
10478 | if (per_cu->cu->mark) | |
10479 | return 1; | |
10480 | per_cu->cu->mark = 1; | |
10481 | ||
10482 | if (per_cu->cu->dependencies != NULL) | |
10483 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
10484 | ||
10485 | return 1; | |
10486 | } | |
10487 | ||
ae038cb0 DJ |
10488 | static void |
10489 | dwarf2_mark (struct dwarf2_cu *cu) | |
10490 | { | |
10491 | if (cu->mark) | |
10492 | return; | |
10493 | cu->mark = 1; | |
10b3939b DJ |
10494 | if (cu->dependencies != NULL) |
10495 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
10496 | } |
10497 | ||
10498 | static void | |
10499 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
10500 | { | |
10501 | while (per_cu) | |
10502 | { | |
10503 | per_cu->cu->mark = 0; | |
10504 | per_cu = per_cu->cu->read_in_chain; | |
10505 | } | |
72bf9492 DJ |
10506 | } |
10507 | ||
72bf9492 DJ |
10508 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
10509 | is its offset in .debug_info for this objfile. */ | |
10510 | ||
10511 | static hashval_t | |
10512 | partial_die_hash (const void *item) | |
10513 | { | |
10514 | const struct partial_die_info *part_die = item; | |
10515 | return part_die->offset; | |
10516 | } | |
10517 | ||
10518 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10519 | are equal if they have the same offset. */ | |
10520 | ||
10521 | static int | |
10522 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10523 | { | |
10524 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10525 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10526 | return part_die_lhs->offset == part_die_rhs->offset; | |
10527 | } | |
10528 | ||
ae038cb0 DJ |
10529 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10530 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10531 | ||
10532 | static void | |
10533 | set_dwarf2_cmd (char *args, int from_tty) | |
10534 | { | |
10535 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10536 | } | |
10537 | ||
10538 | static void | |
10539 | show_dwarf2_cmd (char *args, int from_tty) | |
10540 | { | |
10541 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10542 | } | |
10543 | ||
6502dd73 DJ |
10544 | void _initialize_dwarf2_read (void); |
10545 | ||
10546 | void | |
10547 | _initialize_dwarf2_read (void) | |
10548 | { | |
10549 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10550 | |
1bedd215 AC |
10551 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10552 | Set DWARF 2 specific variables.\n\ | |
10553 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10554 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10555 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10556 | ||
1bedd215 AC |
10557 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10558 | Show DWARF 2 specific variables\n\ | |
10559 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10560 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10561 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10562 | ||
10563 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10564 | &dwarf2_max_cache_age, _("\ |
10565 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10566 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10567 | A higher limit means that cached compilation units will be stored\n\ | |
10568 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10569 | caching, which can slow down startup."), | |
2c5b56ce | 10570 | NULL, |
920d2a44 | 10571 | show_dwarf2_max_cache_age, |
2c5b56ce | 10572 | &set_dwarf2_cmdlist, |
ae038cb0 | 10573 | &show_dwarf2_cmdlist); |
d97bc12b DE |
10574 | |
10575 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ | |
10576 | Set debugging of the dwarf2 DIE reader."), _("\ | |
10577 | Show debugging of the dwarf2 DIE reader."), _("\ | |
10578 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
10579 | The value is the maximum depth to print."), | |
10580 | NULL, | |
10581 | NULL, | |
10582 | &setdebuglist, &showdebuglist); | |
6502dd73 | 10583 | } |