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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
b44e9041 EZ |
2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
3 | 2004 | |
8e65ff28 | 4 | 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 | |
11 | support in dwarfread.c | |
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 | |
17 | the Free Software Foundation; either version 2 of the License, or (at | |
18 | your option) any later version. | |
c906108c | 19 | |
c5aa993b JM |
20 | This program is distributed in the hope that it will be useful, but |
21 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
23 | General Public License for more details. | |
c906108c | 24 | |
c5aa993b JM |
25 | You should have received a copy of the GNU General Public License |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 59 Temple Place - Suite 330, | |
28 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
29 | |
30 | #include "defs.h" | |
31 | #include "bfd.h" | |
c906108c SS |
32 | #include "symtab.h" |
33 | #include "gdbtypes.h" | |
c906108c SS |
34 | #include "objfiles.h" |
35 | #include "elf/dwarf2.h" | |
36 | #include "buildsym.h" | |
37 | #include "demangle.h" | |
38 | #include "expression.h" | |
d5166ae1 | 39 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 40 | #include "macrotab.h" |
c906108c SS |
41 | #include "language.h" |
42 | #include "complaints.h" | |
357e46e7 | 43 | #include "bcache.h" |
4c2df51b DJ |
44 | #include "dwarf2expr.h" |
45 | #include "dwarf2loc.h" | |
9219021c | 46 | #include "cp-support.h" |
4c2df51b | 47 | |
c906108c SS |
48 | #include <fcntl.h> |
49 | #include "gdb_string.h" | |
4bdf3d34 | 50 | #include "gdb_assert.h" |
c906108c SS |
51 | #include <sys/types.h> |
52 | ||
d8151005 DJ |
53 | /* A note on memory usage for this file. |
54 | ||
55 | At the present time, this code reads the debug info sections into | |
56 | the objfile's objfile_obstack. A definite improvement for startup | |
57 | time, on platforms which do not emit relocations for debug | |
58 | sections, would be to use mmap instead. The object's complete | |
59 | debug information is loaded into memory, partly to simplify | |
60 | absolute DIE references. | |
61 | ||
62 | Whether using obstacks or mmap, the sections should remain loaded | |
63 | until the objfile is released, and pointers into the section data | |
64 | can be used for any other data associated to the objfile (symbol | |
65 | names, type names, location expressions to name a few). */ | |
66 | ||
88496bb5 MS |
67 | #ifndef DWARF2_REG_TO_REGNUM |
68 | #define DWARF2_REG_TO_REGNUM(REG) (REG) | |
69 | #endif | |
70 | ||
107d2387 | 71 | #if 0 |
357e46e7 | 72 | /* .debug_info header for a compilation unit |
c906108c SS |
73 | Because of alignment constraints, this structure has padding and cannot |
74 | be mapped directly onto the beginning of the .debug_info section. */ | |
75 | typedef struct comp_unit_header | |
76 | { | |
77 | unsigned int length; /* length of the .debug_info | |
78 | contribution */ | |
79 | unsigned short version; /* version number -- 2 for DWARF | |
80 | version 2 */ | |
81 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
82 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
83 | } | |
84 | _COMP_UNIT_HEADER; | |
85 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 86 | #endif |
c906108c SS |
87 | |
88 | /* .debug_pubnames header | |
89 | Because of alignment constraints, this structure has padding and cannot | |
90 | be mapped directly onto the beginning of the .debug_info section. */ | |
91 | typedef struct pubnames_header | |
92 | { | |
93 | unsigned int length; /* length of the .debug_pubnames | |
94 | contribution */ | |
95 | unsigned char version; /* version number -- 2 for DWARF | |
96 | version 2 */ | |
97 | unsigned int info_offset; /* offset into .debug_info section */ | |
98 | unsigned int info_size; /* byte size of .debug_info section | |
99 | portion */ | |
100 | } | |
101 | _PUBNAMES_HEADER; | |
102 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
103 | ||
104 | /* .debug_pubnames header | |
105 | Because of alignment constraints, this structure has padding and cannot | |
106 | be mapped directly onto the beginning of the .debug_info section. */ | |
107 | typedef struct aranges_header | |
108 | { | |
109 | unsigned int length; /* byte len of the .debug_aranges | |
110 | contribution */ | |
111 | unsigned short version; /* version number -- 2 for DWARF | |
112 | version 2 */ | |
113 | unsigned int info_offset; /* offset into .debug_info section */ | |
114 | unsigned char addr_size; /* byte size of an address */ | |
115 | unsigned char seg_size; /* byte size of segment descriptor */ | |
116 | } | |
117 | _ARANGES_HEADER; | |
118 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
119 | ||
120 | /* .debug_line statement program prologue | |
121 | Because of alignment constraints, this structure has padding and cannot | |
122 | be mapped directly onto the beginning of the .debug_info section. */ | |
123 | typedef struct statement_prologue | |
124 | { | |
125 | unsigned int total_length; /* byte length of the statement | |
126 | information */ | |
127 | unsigned short version; /* version number -- 2 for DWARF | |
128 | version 2 */ | |
129 | unsigned int prologue_length; /* # bytes between prologue & | |
130 | stmt program */ | |
131 | unsigned char minimum_instruction_length; /* byte size of | |
132 | smallest instr */ | |
133 | unsigned char default_is_stmt; /* initial value of is_stmt | |
134 | register */ | |
135 | char line_base; | |
136 | unsigned char line_range; | |
137 | unsigned char opcode_base; /* number assigned to first special | |
138 | opcode */ | |
139 | unsigned char *standard_opcode_lengths; | |
140 | } | |
141 | _STATEMENT_PROLOGUE; | |
142 | ||
143 | /* offsets and sizes of debugging sections */ | |
144 | ||
c906108c SS |
145 | static unsigned int dwarf_info_size; |
146 | static unsigned int dwarf_abbrev_size; | |
147 | static unsigned int dwarf_line_size; | |
148 | static unsigned int dwarf_pubnames_size; | |
149 | static unsigned int dwarf_aranges_size; | |
150 | static unsigned int dwarf_loc_size; | |
151 | static unsigned int dwarf_macinfo_size; | |
152 | static unsigned int dwarf_str_size; | |
af34e669 | 153 | static unsigned int dwarf_ranges_size; |
b6af0555 JS |
154 | unsigned int dwarf_frame_size; |
155 | unsigned int dwarf_eh_frame_size; | |
c906108c | 156 | |
086df311 DJ |
157 | static asection *dwarf_info_section; |
158 | static asection *dwarf_abbrev_section; | |
159 | static asection *dwarf_line_section; | |
160 | static asection *dwarf_pubnames_section; | |
161 | static asection *dwarf_aranges_section; | |
162 | static asection *dwarf_loc_section; | |
163 | static asection *dwarf_macinfo_section; | |
164 | static asection *dwarf_str_section; | |
165 | static asection *dwarf_ranges_section; | |
166 | asection *dwarf_frame_section; | |
167 | asection *dwarf_eh_frame_section; | |
168 | ||
c906108c SS |
169 | /* names of the debugging sections */ |
170 | ||
171 | #define INFO_SECTION ".debug_info" | |
172 | #define ABBREV_SECTION ".debug_abbrev" | |
173 | #define LINE_SECTION ".debug_line" | |
174 | #define PUBNAMES_SECTION ".debug_pubnames" | |
175 | #define ARANGES_SECTION ".debug_aranges" | |
176 | #define LOC_SECTION ".debug_loc" | |
177 | #define MACINFO_SECTION ".debug_macinfo" | |
178 | #define STR_SECTION ".debug_str" | |
af34e669 | 179 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
180 | #define FRAME_SECTION ".debug_frame" |
181 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
182 | |
183 | /* local data types */ | |
184 | ||
57349743 JB |
185 | /* We hold several abbreviation tables in memory at the same time. */ |
186 | #ifndef ABBREV_HASH_SIZE | |
187 | #define ABBREV_HASH_SIZE 121 | |
188 | #endif | |
189 | ||
107d2387 AC |
190 | /* The data in a compilation unit header, after target2host |
191 | translation, looks like this. */ | |
c906108c SS |
192 | struct comp_unit_head |
193 | { | |
613e1657 | 194 | unsigned long length; |
c906108c SS |
195 | short version; |
196 | unsigned int abbrev_offset; | |
197 | unsigned char addr_size; | |
107d2387 | 198 | unsigned char signed_addr_p; |
613e1657 KB |
199 | unsigned int offset_size; /* size of file offsets; either 4 or 8 */ |
200 | unsigned int initial_length_size; /* size of the length field; either | |
201 | 4 or 12 */ | |
57349743 JB |
202 | |
203 | /* Offset to the first byte of this compilation unit header in the | |
204 | * .debug_info section, for resolving relative reference dies. */ | |
205 | ||
206 | unsigned int offset; | |
207 | ||
208 | /* Pointer to this compilation unit header in the .debug_info | |
209 | * section */ | |
210 | ||
211 | char *cu_head_ptr; | |
212 | ||
213 | /* Pointer to the first die of this compilatio unit. This will | |
214 | * be the first byte following the compilation unit header. */ | |
215 | ||
216 | char *first_die_ptr; | |
217 | ||
218 | /* Pointer to the next compilation unit header in the program. */ | |
219 | ||
220 | struct comp_unit_head *next; | |
221 | ||
0d53c4c4 | 222 | /* Base address of this compilation unit. */ |
af34e669 | 223 | |
0d53c4c4 DJ |
224 | CORE_ADDR base_address; |
225 | ||
226 | /* Non-zero if base_address has been set. */ | |
227 | ||
228 | int base_known; | |
c906108c SS |
229 | }; |
230 | ||
e7c27a73 DJ |
231 | /* Internal state when decoding a particular compilation unit. */ |
232 | struct dwarf2_cu | |
233 | { | |
234 | /* The objfile containing this compilation unit. */ | |
235 | struct objfile *objfile; | |
236 | ||
237 | /* The header of the compilation unit. | |
238 | ||
239 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 240 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 241 | struct comp_unit_head header; |
e142c38c DJ |
242 | |
243 | struct function_range *first_fn, *last_fn, *cached_fn; | |
244 | ||
245 | /* The language we are debugging. */ | |
246 | enum language language; | |
247 | const struct language_defn *language_defn; | |
248 | ||
249 | /* The generic symbol table building routines have separate lists for | |
250 | file scope symbols and all all other scopes (local scopes). So | |
251 | we need to select the right one to pass to add_symbol_to_list(). | |
252 | We do it by keeping a pointer to the correct list in list_in_scope. | |
253 | ||
254 | FIXME: The original dwarf code just treated the file scope as the | |
255 | first local scope, and all other local scopes as nested local | |
256 | scopes, and worked fine. Check to see if we really need to | |
257 | distinguish these in buildsym.c. */ | |
258 | struct pending **list_in_scope; | |
259 | ||
260 | /* Maintain an array of referenced fundamental types for the current | |
261 | compilation unit being read. For DWARF version 1, we have to construct | |
262 | the fundamental types on the fly, since no information about the | |
263 | fundamental types is supplied. Each such fundamental type is created by | |
264 | calling a language dependent routine to create the type, and then a | |
265 | pointer to that type is then placed in the array at the index specified | |
266 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
267 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
268 | fundamental types gdb knows how to construct. */ | |
269 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
270 | |
271 | /* DWARF abbreviation table associated with this compilation unit. */ | |
272 | struct abbrev_info **dwarf2_abbrevs; | |
273 | ||
274 | /* Storage for the abbrev table. */ | |
275 | struct obstack abbrev_obstack; | |
e7c27a73 DJ |
276 | }; |
277 | ||
debd256d JB |
278 | /* The line number information for a compilation unit (found in the |
279 | .debug_line section) begins with a "statement program header", | |
280 | which contains the following information. */ | |
281 | struct line_header | |
282 | { | |
283 | unsigned int total_length; | |
284 | unsigned short version; | |
285 | unsigned int header_length; | |
286 | unsigned char minimum_instruction_length; | |
287 | unsigned char default_is_stmt; | |
288 | int line_base; | |
289 | unsigned char line_range; | |
290 | unsigned char opcode_base; | |
291 | ||
292 | /* standard_opcode_lengths[i] is the number of operands for the | |
293 | standard opcode whose value is i. This means that | |
294 | standard_opcode_lengths[0] is unused, and the last meaningful | |
295 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
296 | unsigned char *standard_opcode_lengths; | |
297 | ||
298 | /* The include_directories table. NOTE! These strings are not | |
299 | allocated with xmalloc; instead, they are pointers into | |
300 | debug_line_buffer. If you try to free them, `free' will get | |
301 | indigestion. */ | |
302 | unsigned int num_include_dirs, include_dirs_size; | |
303 | char **include_dirs; | |
304 | ||
305 | /* The file_names table. NOTE! These strings are not allocated | |
306 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
307 | Don't try to free them directly. */ | |
308 | unsigned int num_file_names, file_names_size; | |
309 | struct file_entry | |
c906108c | 310 | { |
debd256d JB |
311 | char *name; |
312 | unsigned int dir_index; | |
313 | unsigned int mod_time; | |
314 | unsigned int length; | |
315 | } *file_names; | |
316 | ||
317 | /* The start and end of the statement program following this | |
318 | header. These point into dwarf_line_buffer. */ | |
319 | char *statement_program_start, *statement_program_end; | |
320 | }; | |
c906108c SS |
321 | |
322 | /* When we construct a partial symbol table entry we only | |
323 | need this much information. */ | |
324 | struct partial_die_info | |
325 | { | |
326 | enum dwarf_tag tag; | |
327 | unsigned char has_children; | |
328 | unsigned char is_external; | |
329 | unsigned char is_declaration; | |
330 | unsigned char has_type; | |
331 | unsigned int offset; | |
332 | unsigned int abbrev; | |
333 | char *name; | |
0b010bcc | 334 | int has_pc_info; |
c906108c SS |
335 | CORE_ADDR lowpc; |
336 | CORE_ADDR highpc; | |
337 | struct dwarf_block *locdesc; | |
338 | unsigned int language; | |
339 | char *sibling; | |
340 | }; | |
341 | ||
342 | /* This data structure holds the information of an abbrev. */ | |
343 | struct abbrev_info | |
344 | { | |
345 | unsigned int number; /* number identifying abbrev */ | |
346 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
347 | unsigned short has_children; /* boolean */ |
348 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
349 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
350 | struct abbrev_info *next; /* next in chain */ | |
351 | }; | |
352 | ||
353 | struct attr_abbrev | |
354 | { | |
355 | enum dwarf_attribute name; | |
356 | enum dwarf_form form; | |
357 | }; | |
358 | ||
359 | /* This data structure holds a complete die structure. */ | |
360 | struct die_info | |
361 | { | |
c5aa993b | 362 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
363 | unsigned int abbrev; /* Abbrev number */ |
364 | unsigned int offset; /* Offset in .debug_info section */ | |
365 | unsigned int num_attrs; /* Number of attributes */ | |
366 | struct attribute *attrs; /* An array of attributes */ | |
367 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
368 | |
369 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
370 | points to this die's parent; CHILD points to the first child of | |
371 | this node; and all the children of a given node are chained | |
372 | together via their SIBLING fields, terminated by a die whose | |
373 | tag is zero. */ | |
639d11d3 DC |
374 | struct die_info *child; /* Its first child, if any. */ |
375 | struct die_info *sibling; /* Its next sibling, if any. */ | |
376 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 377 | |
c5aa993b | 378 | struct type *type; /* Cached type information */ |
c906108c SS |
379 | }; |
380 | ||
381 | /* Attributes have a name and a value */ | |
382 | struct attribute | |
383 | { | |
384 | enum dwarf_attribute name; | |
385 | enum dwarf_form form; | |
386 | union | |
387 | { | |
388 | char *str; | |
389 | struct dwarf_block *blk; | |
ce5d95e1 JB |
390 | unsigned long unsnd; |
391 | long int snd; | |
c906108c SS |
392 | CORE_ADDR addr; |
393 | } | |
394 | u; | |
395 | }; | |
396 | ||
5fb290d7 DJ |
397 | struct function_range |
398 | { | |
399 | const char *name; | |
400 | CORE_ADDR lowpc, highpc; | |
401 | int seen_line; | |
402 | struct function_range *next; | |
403 | }; | |
404 | ||
c906108c SS |
405 | /* Get at parts of an attribute structure */ |
406 | ||
407 | #define DW_STRING(attr) ((attr)->u.str) | |
408 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
409 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
410 | #define DW_SND(attr) ((attr)->u.snd) | |
411 | #define DW_ADDR(attr) ((attr)->u.addr) | |
412 | ||
413 | /* Blocks are a bunch of untyped bytes. */ | |
414 | struct dwarf_block | |
415 | { | |
416 | unsigned int size; | |
417 | char *data; | |
418 | }; | |
419 | ||
c906108c SS |
420 | #ifndef ATTR_ALLOC_CHUNK |
421 | #define ATTR_ALLOC_CHUNK 4 | |
422 | #endif | |
423 | ||
c906108c SS |
424 | /* A hash table of die offsets for following references. */ |
425 | #ifndef REF_HASH_SIZE | |
426 | #define REF_HASH_SIZE 1021 | |
427 | #endif | |
428 | ||
429 | static struct die_info *die_ref_table[REF_HASH_SIZE]; | |
430 | ||
431 | /* Obstack for allocating temporary storage used during symbol reading. */ | |
432 | static struct obstack dwarf2_tmp_obstack; | |
433 | ||
c906108c SS |
434 | /* Allocate fields for structs, unions and enums in this size. */ |
435 | #ifndef DW_FIELD_ALLOC_CHUNK | |
436 | #define DW_FIELD_ALLOC_CHUNK 4 | |
437 | #endif | |
438 | ||
c906108c SS |
439 | /* Actually data from the sections. */ |
440 | static char *dwarf_info_buffer; | |
441 | static char *dwarf_abbrev_buffer; | |
442 | static char *dwarf_line_buffer; | |
4bdf3d34 | 443 | static char *dwarf_str_buffer; |
2e276125 | 444 | static char *dwarf_macinfo_buffer; |
af34e669 | 445 | static char *dwarf_ranges_buffer; |
0d53c4c4 | 446 | static char *dwarf_loc_buffer; |
c906108c SS |
447 | |
448 | /* A zeroed version of a partial die for initialization purposes. */ | |
449 | static struct partial_die_info zeroed_partial_die; | |
450 | ||
7a292a7a SS |
451 | /* FIXME: decode_locdesc sets these variables to describe the location |
452 | to the caller. These ought to be a structure or something. If | |
453 | none of the flags are set, the object lives at the address returned | |
454 | by decode_locdesc. */ | |
455 | ||
7a292a7a SS |
456 | static int isreg; /* Object lives in register. |
457 | decode_locdesc's return value is | |
458 | the register number. */ | |
c906108c | 459 | |
c906108c SS |
460 | /* We put a pointer to this structure in the read_symtab_private field |
461 | of the psymtab. | |
d8151005 | 462 | |
c906108c | 463 | Most of the information in this structure is related to an entire |
d8151005 DJ |
464 | object file and could be passed via the sym_private field of the |
465 | objfile. It is possible to have both dwarf2 and some other form | |
466 | of debug symbols in one object file. */ | |
c906108c SS |
467 | |
468 | struct dwarf2_pinfo | |
c5aa993b JM |
469 | { |
470 | /* Pointer to start of dwarf info buffer for the objfile. */ | |
c906108c | 471 | |
c5aa993b | 472 | char *dwarf_info_buffer; |
c906108c | 473 | |
c5aa993b | 474 | /* Offset in dwarf_info_buffer for this compilation unit. */ |
c906108c | 475 | |
c5aa993b | 476 | unsigned long dwarf_info_offset; |
c906108c | 477 | |
c5aa993b | 478 | /* Pointer to start of dwarf abbreviation buffer for the objfile. */ |
c906108c | 479 | |
c5aa993b | 480 | char *dwarf_abbrev_buffer; |
c906108c | 481 | |
c5aa993b | 482 | /* Size of dwarf abbreviation section for the objfile. */ |
c906108c | 483 | |
c5aa993b | 484 | unsigned int dwarf_abbrev_size; |
c906108c | 485 | |
c5aa993b | 486 | /* Pointer to start of dwarf line buffer for the objfile. */ |
c906108c | 487 | |
c5aa993b | 488 | char *dwarf_line_buffer; |
4bdf3d34 | 489 | |
9ab3e532 JB |
490 | /* Size of dwarf_line_buffer, in bytes. */ |
491 | ||
492 | unsigned int dwarf_line_size; | |
493 | ||
4bdf3d34 JJ |
494 | /* Pointer to start of dwarf string buffer for the objfile. */ |
495 | ||
496 | char *dwarf_str_buffer; | |
497 | ||
498 | /* Size of dwarf string section for the objfile. */ | |
499 | ||
500 | unsigned int dwarf_str_size; | |
2e276125 JB |
501 | |
502 | /* Pointer to start of dwarf macro buffer for the objfile. */ | |
503 | ||
504 | char *dwarf_macinfo_buffer; | |
505 | ||
506 | /* Size of dwarf macinfo section for the objfile. */ | |
507 | ||
508 | unsigned int dwarf_macinfo_size; | |
509 | ||
af34e669 DJ |
510 | /* Pointer to start of dwarf ranges buffer for the objfile. */ |
511 | ||
512 | char *dwarf_ranges_buffer; | |
513 | ||
514 | /* Size of dwarf ranges buffer for the objfile. */ | |
515 | ||
516 | unsigned int dwarf_ranges_size; | |
517 | ||
0d53c4c4 DJ |
518 | /* Pointer to start of dwarf locations buffer for the objfile. */ |
519 | ||
520 | char *dwarf_loc_buffer; | |
521 | ||
522 | /* Size of dwarf locations buffer for the objfile. */ | |
523 | ||
524 | unsigned int dwarf_loc_size; | |
c5aa993b | 525 | }; |
c906108c SS |
526 | |
527 | #define PST_PRIVATE(p) ((struct dwarf2_pinfo *)(p)->read_symtab_private) | |
528 | #define DWARF_INFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_info_buffer) | |
529 | #define DWARF_INFO_OFFSET(p) (PST_PRIVATE(p)->dwarf_info_offset) | |
530 | #define DWARF_ABBREV_BUFFER(p) (PST_PRIVATE(p)->dwarf_abbrev_buffer) | |
531 | #define DWARF_ABBREV_SIZE(p) (PST_PRIVATE(p)->dwarf_abbrev_size) | |
532 | #define DWARF_LINE_BUFFER(p) (PST_PRIVATE(p)->dwarf_line_buffer) | |
9ab3e532 | 533 | #define DWARF_LINE_SIZE(p) (PST_PRIVATE(p)->dwarf_line_size) |
4bdf3d34 JJ |
534 | #define DWARF_STR_BUFFER(p) (PST_PRIVATE(p)->dwarf_str_buffer) |
535 | #define DWARF_STR_SIZE(p) (PST_PRIVATE(p)->dwarf_str_size) | |
2e276125 JB |
536 | #define DWARF_MACINFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_macinfo_buffer) |
537 | #define DWARF_MACINFO_SIZE(p) (PST_PRIVATE(p)->dwarf_macinfo_size) | |
af34e669 DJ |
538 | #define DWARF_RANGES_BUFFER(p) (PST_PRIVATE(p)->dwarf_ranges_buffer) |
539 | #define DWARF_RANGES_SIZE(p) (PST_PRIVATE(p)->dwarf_ranges_size) | |
0d53c4c4 DJ |
540 | #define DWARF_LOC_BUFFER(p) (PST_PRIVATE(p)->dwarf_loc_buffer) |
541 | #define DWARF_LOC_SIZE(p) (PST_PRIVATE(p)->dwarf_loc_size) | |
c906108c | 542 | |
c906108c SS |
543 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
544 | but this would require a corresponding change in unpack_field_as_long | |
545 | and friends. */ | |
546 | static int bits_per_byte = 8; | |
547 | ||
548 | /* The routines that read and process dies for a C struct or C++ class | |
549 | pass lists of data member fields and lists of member function fields | |
550 | in an instance of a field_info structure, as defined below. */ | |
551 | struct field_info | |
c5aa993b JM |
552 | { |
553 | /* List of data member and baseclasses fields. */ | |
554 | struct nextfield | |
555 | { | |
556 | struct nextfield *next; | |
557 | int accessibility; | |
558 | int virtuality; | |
559 | struct field field; | |
560 | } | |
561 | *fields; | |
c906108c | 562 | |
c5aa993b JM |
563 | /* Number of fields. */ |
564 | int nfields; | |
c906108c | 565 | |
c5aa993b JM |
566 | /* Number of baseclasses. */ |
567 | int nbaseclasses; | |
c906108c | 568 | |
c5aa993b JM |
569 | /* Set if the accesibility of one of the fields is not public. */ |
570 | int non_public_fields; | |
c906108c | 571 | |
c5aa993b JM |
572 | /* Member function fields array, entries are allocated in the order they |
573 | are encountered in the object file. */ | |
574 | struct nextfnfield | |
575 | { | |
576 | struct nextfnfield *next; | |
577 | struct fn_field fnfield; | |
578 | } | |
579 | *fnfields; | |
c906108c | 580 | |
c5aa993b JM |
581 | /* Member function fieldlist array, contains name of possibly overloaded |
582 | member function, number of overloaded member functions and a pointer | |
583 | to the head of the member function field chain. */ | |
584 | struct fnfieldlist | |
585 | { | |
586 | char *name; | |
587 | int length; | |
588 | struct nextfnfield *head; | |
589 | } | |
590 | *fnfieldlists; | |
c906108c | 591 | |
c5aa993b JM |
592 | /* Number of entries in the fnfieldlists array. */ |
593 | int nfnfields; | |
594 | }; | |
c906108c | 595 | |
c906108c SS |
596 | /* Various complaints about symbol reading that don't abort the process */ |
597 | ||
4d3c2250 KB |
598 | static void |
599 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 600 | { |
4d3c2250 KB |
601 | complaint (&symfile_complaints, |
602 | "statement list doesn't fit in .debug_line section"); | |
603 | } | |
604 | ||
605 | static void | |
606 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 607 | { |
4d3c2250 KB |
608 | complaint (&symfile_complaints, "location expression too complex"); |
609 | } | |
610 | ||
4d3c2250 KB |
611 | static void |
612 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
613 | int arg3) | |
2e276125 | 614 | { |
4d3c2250 KB |
615 | complaint (&symfile_complaints, |
616 | "const value length mismatch for '%s', got %d, expected %d", arg1, | |
617 | arg2, arg3); | |
618 | } | |
619 | ||
620 | static void | |
621 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 622 | { |
4d3c2250 KB |
623 | complaint (&symfile_complaints, |
624 | "macro info runs off end of `.debug_macinfo' section"); | |
625 | } | |
626 | ||
627 | static void | |
628 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 629 | { |
4d3c2250 KB |
630 | complaint (&symfile_complaints, |
631 | "macro debug info contains a malformed macro definition:\n`%s'", | |
632 | arg1); | |
633 | } | |
634 | ||
635 | static void | |
636 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 637 | { |
4d3c2250 KB |
638 | complaint (&symfile_complaints, |
639 | "invalid attribute class or form for '%s' in '%s'", arg1, arg2); | |
640 | } | |
c906108c | 641 | |
c906108c SS |
642 | /* local function prototypes */ |
643 | ||
4efb68b1 | 644 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
645 | |
646 | #if 0 | |
a14ed312 | 647 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
648 | #endif |
649 | ||
a14ed312 | 650 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 651 | |
e7c27a73 DJ |
652 | static char *scan_partial_symbols (char *, CORE_ADDR *, CORE_ADDR *, |
653 | struct dwarf2_cu *, | |
5c4e30ca | 654 | const char *namespace); |
c906108c | 655 | |
e7c27a73 | 656 | static void add_partial_symbol (struct partial_die_info *, struct dwarf2_cu *, |
5c4e30ca | 657 | const char *namespace); |
c906108c | 658 | |
63d06c5c DC |
659 | static int pdi_needs_namespace (enum dwarf_tag tag, const char *namespace); |
660 | ||
91c24f0a DC |
661 | static char *add_partial_namespace (struct partial_die_info *pdi, |
662 | char *info_ptr, | |
91c24f0a | 663 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 664 | struct dwarf2_cu *cu, |
5c4e30ca | 665 | const char *namespace); |
91c24f0a | 666 | |
63d06c5c DC |
667 | static char *add_partial_structure (struct partial_die_info *struct_pdi, |
668 | char *info_ptr, | |
669 | struct dwarf2_cu *cu, | |
670 | const char *namespace); | |
671 | ||
91c24f0a DC |
672 | static char *add_partial_enumeration (struct partial_die_info *enum_pdi, |
673 | char *info_ptr, | |
e7c27a73 | 674 | struct dwarf2_cu *cu, |
5c4e30ca | 675 | const char *namespace); |
91c24f0a DC |
676 | |
677 | static char *locate_pdi_sibling (struct partial_die_info *orig_pdi, | |
678 | char *info_ptr, | |
679 | bfd *abfd, | |
e7c27a73 | 680 | struct dwarf2_cu *cu); |
91c24f0a | 681 | |
a14ed312 | 682 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 683 | |
a14ed312 | 684 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 685 | |
188dd5d6 | 686 | char *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 687 | |
e7c27a73 | 688 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 689 | |
f3dd6933 | 690 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 691 | |
57349743 | 692 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 693 | struct dwarf2_cu *); |
c906108c | 694 | |
a14ed312 | 695 | static char *read_partial_die (struct partial_die_info *, |
e7c27a73 | 696 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 697 | |
107d2387 | 698 | static char *read_full_die (struct die_info **, bfd *, char *, |
e7c27a73 | 699 | struct dwarf2_cu *, int *); |
c906108c | 700 | |
a14ed312 | 701 | static char *read_attribute (struct attribute *, struct attr_abbrev *, |
e7c27a73 | 702 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 703 | |
a8329558 | 704 | static char *read_attribute_value (struct attribute *, unsigned, |
e7c27a73 | 705 | bfd *, char *, struct dwarf2_cu *); |
a8329558 | 706 | |
a14ed312 | 707 | static unsigned int read_1_byte (bfd *, char *); |
c906108c | 708 | |
a14ed312 | 709 | static int read_1_signed_byte (bfd *, char *); |
c906108c | 710 | |
a14ed312 | 711 | static unsigned int read_2_bytes (bfd *, char *); |
c906108c | 712 | |
a14ed312 | 713 | static unsigned int read_4_bytes (bfd *, char *); |
c906108c | 714 | |
ce5d95e1 | 715 | static unsigned long read_8_bytes (bfd *, char *); |
c906108c | 716 | |
e7c27a73 | 717 | static CORE_ADDR read_address (bfd *, char *ptr, struct dwarf2_cu *, |
107d2387 | 718 | int *bytes_read); |
c906108c | 719 | |
613e1657 KB |
720 | static LONGEST read_initial_length (bfd *, char *, |
721 | struct comp_unit_head *, int *bytes_read); | |
722 | ||
723 | static LONGEST read_offset (bfd *, char *, const struct comp_unit_head *, | |
724 | int *bytes_read); | |
725 | ||
a14ed312 | 726 | static char *read_n_bytes (bfd *, char *, unsigned int); |
c906108c | 727 | |
a14ed312 | 728 | static char *read_string (bfd *, char *, unsigned int *); |
c906108c | 729 | |
4bdf3d34 JJ |
730 | static char *read_indirect_string (bfd *, char *, const struct comp_unit_head *, |
731 | unsigned int *); | |
732 | ||
ce5d95e1 | 733 | static unsigned long read_unsigned_leb128 (bfd *, char *, unsigned int *); |
c906108c | 734 | |
ce5d95e1 | 735 | static long read_signed_leb128 (bfd *, char *, unsigned int *); |
c906108c | 736 | |
e142c38c | 737 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 738 | |
e142c38c DJ |
739 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
740 | struct dwarf2_cu *); | |
c906108c | 741 | |
e142c38c | 742 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 743 | |
e142c38c DJ |
744 | static struct die_info *die_specification (struct die_info *die, |
745 | struct dwarf2_cu *); | |
63d06c5c | 746 | |
debd256d JB |
747 | static void free_line_header (struct line_header *lh); |
748 | ||
749 | static struct line_header *(dwarf_decode_line_header | |
750 | (unsigned int offset, | |
e7c27a73 | 751 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
752 | |
753 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
e7c27a73 | 754 | struct dwarf2_cu *); |
c906108c | 755 | |
a14ed312 | 756 | static void dwarf2_start_subfile (char *, char *); |
c906108c | 757 | |
a14ed312 | 758 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 759 | struct dwarf2_cu *); |
c906108c | 760 | |
a14ed312 | 761 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 762 | struct dwarf2_cu *); |
c906108c | 763 | |
2df3850c JM |
764 | static void dwarf2_const_value_data (struct attribute *attr, |
765 | struct symbol *sym, | |
766 | int bits); | |
767 | ||
e7c27a73 | 768 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 769 | |
e7c27a73 DJ |
770 | static struct type *die_containing_type (struct die_info *, |
771 | struct dwarf2_cu *); | |
c906108c SS |
772 | |
773 | #if 0 | |
a14ed312 | 774 | static struct type *type_at_offset (unsigned int, struct objfile *); |
c906108c SS |
775 | #endif |
776 | ||
e7c27a73 | 777 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 778 | |
e7c27a73 | 779 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 780 | |
086ed43d | 781 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 782 | |
e142c38c | 783 | static char *determine_prefix_aux (struct die_info *die, struct dwarf2_cu *); |
fdde2d81 | 784 | |
63d06c5c DC |
785 | static char *typename_concat (const char *prefix, const char *suffix); |
786 | ||
e142c38c | 787 | static char *class_name (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 788 | |
e7c27a73 | 789 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 790 | |
e7c27a73 | 791 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 792 | |
a02abb62 JB |
793 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
794 | ||
e7c27a73 | 795 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 796 | |
e7c27a73 | 797 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 798 | |
e7c27a73 | 799 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 800 | |
a14ed312 | 801 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 802 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 803 | |
fae299cd DC |
804 | static void get_scope_pc_bounds (struct die_info *, |
805 | CORE_ADDR *, CORE_ADDR *, | |
806 | struct dwarf2_cu *); | |
807 | ||
a14ed312 | 808 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 809 | struct dwarf2_cu *); |
c906108c | 810 | |
a14ed312 | 811 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 812 | struct type *, struct dwarf2_cu *); |
c906108c | 813 | |
a14ed312 | 814 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 815 | struct die_info *, struct type *, |
e7c27a73 | 816 | struct dwarf2_cu *); |
c906108c | 817 | |
a14ed312 | 818 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 819 | struct type *, struct dwarf2_cu *); |
c906108c | 820 | |
e7c27a73 | 821 | static void read_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 822 | |
e7c27a73 | 823 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 824 | |
e7c27a73 | 825 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 826 | |
38d518c9 | 827 | static const char *namespace_name (struct die_info *die, |
e142c38c | 828 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 829 | |
e7c27a73 | 830 | static void read_enumeration (struct die_info *, struct dwarf2_cu *); |
c906108c | 831 | |
e7c27a73 | 832 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 833 | |
e7c27a73 | 834 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 835 | |
e7c27a73 | 836 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 837 | |
e7c27a73 | 838 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 839 | |
e7c27a73 DJ |
840 | static void read_tag_ptr_to_member_type (struct die_info *, |
841 | struct dwarf2_cu *); | |
c906108c | 842 | |
e7c27a73 | 843 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 844 | |
e7c27a73 | 845 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 846 | |
e7c27a73 | 847 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 848 | |
e7c27a73 | 849 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 850 | |
e7c27a73 | 851 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 852 | |
e7c27a73 | 853 | static struct die_info *read_comp_unit (char *, bfd *, struct dwarf2_cu *); |
c906108c | 854 | |
639d11d3 | 855 | static struct die_info *read_die_and_children (char *info_ptr, bfd *abfd, |
e7c27a73 | 856 | struct dwarf2_cu *, |
639d11d3 DC |
857 | char **new_info_ptr, |
858 | struct die_info *parent); | |
859 | ||
860 | static struct die_info *read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 861 | struct dwarf2_cu *, |
639d11d3 DC |
862 | char **new_info_ptr, |
863 | struct die_info *parent); | |
864 | ||
a14ed312 | 865 | static void free_die_list (struct die_info *); |
c906108c | 866 | |
74b7792f AC |
867 | static struct cleanup *make_cleanup_free_die_list (struct die_info *); |
868 | ||
e7c27a73 | 869 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 870 | |
e142c38c | 871 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 872 | |
e142c38c | 873 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 874 | |
e142c38c DJ |
875 | static struct die_info *dwarf2_extension (struct die_info *die, |
876 | struct dwarf2_cu *); | |
9219021c | 877 | |
a14ed312 | 878 | static char *dwarf_tag_name (unsigned int); |
c906108c | 879 | |
a14ed312 | 880 | static char *dwarf_attr_name (unsigned int); |
c906108c | 881 | |
a14ed312 | 882 | static char *dwarf_form_name (unsigned int); |
c906108c | 883 | |
a14ed312 | 884 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 885 | |
a14ed312 | 886 | static char *dwarf_bool_name (unsigned int); |
c906108c | 887 | |
a14ed312 | 888 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
889 | |
890 | #if 0 | |
a14ed312 | 891 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 892 | |
a14ed312 | 893 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
894 | #endif |
895 | ||
f9aca02d | 896 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 897 | |
f9aca02d | 898 | static void dump_die (struct die_info *); |
c906108c | 899 | |
f9aca02d | 900 | static void dump_die_list (struct die_info *); |
c906108c | 901 | |
f9aca02d | 902 | static void store_in_ref_table (unsigned int, struct die_info *); |
c906108c | 903 | |
7f0e3f52 | 904 | static void dwarf2_empty_hash_tables (void); |
c906108c | 905 | |
e142c38c DJ |
906 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
907 | struct dwarf2_cu *); | |
c906108c | 908 | |
a02abb62 JB |
909 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
910 | ||
f9aca02d | 911 | static struct die_info *follow_die_ref (unsigned int); |
c906108c | 912 | |
e142c38c DJ |
913 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
914 | struct dwarf2_cu *); | |
c906108c SS |
915 | |
916 | /* memory allocation interface */ | |
917 | ||
4efb68b1 | 918 | static void dwarf2_free_tmp_obstack (void *); |
c906108c | 919 | |
a14ed312 | 920 | static struct dwarf_block *dwarf_alloc_block (void); |
c906108c | 921 | |
f3dd6933 | 922 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 923 | |
a14ed312 | 924 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 925 | |
e142c38c | 926 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 927 | |
e142c38c DJ |
928 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
929 | struct dwarf2_cu *); | |
5fb290d7 | 930 | |
2e276125 | 931 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 932 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 933 | |
8e19ed76 PS |
934 | static int attr_form_is_block (struct attribute *); |
935 | ||
4c2df51b DJ |
936 | static void |
937 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 938 | struct dwarf2_cu *cu); |
4c2df51b | 939 | |
c906108c SS |
940 | /* Try to locate the sections we need for DWARF 2 debugging |
941 | information and return true if we have enough to do something. */ | |
942 | ||
943 | int | |
fba45db2 | 944 | dwarf2_has_info (bfd *abfd) |
c906108c | 945 | { |
188dd5d6 DJ |
946 | dwarf_info_section = 0; |
947 | dwarf_abbrev_section = 0; | |
948 | dwarf_line_section = 0; | |
949 | dwarf_str_section = 0; | |
950 | dwarf_macinfo_section = 0; | |
951 | dwarf_frame_section = 0; | |
952 | dwarf_eh_frame_section = 0; | |
953 | dwarf_ranges_section = 0; | |
954 | dwarf_loc_section = 0; | |
af34e669 | 955 | |
c906108c | 956 | bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 957 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
958 | } |
959 | ||
960 | /* This function is mapped across the sections and remembers the | |
961 | offset and size of each of the debugging sections we are interested | |
962 | in. */ | |
963 | ||
964 | static void | |
4efb68b1 | 965 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 966 | { |
6314a349 | 967 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 968 | { |
c906108c | 969 | dwarf_info_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 970 | dwarf_info_section = sectp; |
c906108c | 971 | } |
6314a349 | 972 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 973 | { |
c906108c | 974 | dwarf_abbrev_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 975 | dwarf_abbrev_section = sectp; |
c906108c | 976 | } |
6314a349 | 977 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 978 | { |
c906108c | 979 | dwarf_line_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 980 | dwarf_line_section = sectp; |
c906108c | 981 | } |
6314a349 | 982 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 983 | { |
c906108c | 984 | dwarf_pubnames_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 985 | dwarf_pubnames_section = sectp; |
c906108c | 986 | } |
6314a349 | 987 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 988 | { |
c906108c | 989 | dwarf_aranges_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 990 | dwarf_aranges_section = sectp; |
c906108c | 991 | } |
6314a349 | 992 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 993 | { |
c906108c | 994 | dwarf_loc_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 995 | dwarf_loc_section = sectp; |
c906108c | 996 | } |
6314a349 | 997 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 998 | { |
c906108c | 999 | dwarf_macinfo_size = bfd_get_section_size_before_reloc (sectp); |
0cf824c9 | 1000 | dwarf_macinfo_section = sectp; |
c906108c | 1001 | } |
6314a349 | 1002 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1003 | { |
c906108c | 1004 | dwarf_str_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 1005 | dwarf_str_section = sectp; |
c906108c | 1006 | } |
6314a349 | 1007 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1008 | { |
b6af0555 | 1009 | dwarf_frame_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 1010 | dwarf_frame_section = sectp; |
b6af0555 | 1011 | } |
6314a349 | 1012 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1013 | { |
3799ccc6 EZ |
1014 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1015 | if (aflag & SEC_HAS_CONTENTS) | |
1016 | { | |
3799ccc6 EZ |
1017 | dwarf_eh_frame_size = bfd_get_section_size_before_reloc (sectp); |
1018 | dwarf_eh_frame_section = sectp; | |
1019 | } | |
b6af0555 | 1020 | } |
6314a349 | 1021 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1022 | { |
af34e669 | 1023 | dwarf_ranges_size = bfd_get_section_size_before_reloc (sectp); |
6f10aeb1 | 1024 | dwarf_ranges_section = sectp; |
af34e669 | 1025 | } |
c906108c SS |
1026 | } |
1027 | ||
1028 | /* Build a partial symbol table. */ | |
1029 | ||
1030 | void | |
fba45db2 | 1031 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c SS |
1032 | { |
1033 | ||
1034 | /* We definitely need the .debug_info and .debug_abbrev sections */ | |
1035 | ||
188dd5d6 DJ |
1036 | dwarf_info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1037 | dwarf_abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
1038 | ||
1039 | if (dwarf_line_section) | |
1040 | dwarf_line_buffer = dwarf2_read_section (objfile, dwarf_line_section); | |
41ff2da1 DC |
1041 | else |
1042 | dwarf_line_buffer = NULL; | |
c906108c | 1043 | |
188dd5d6 DJ |
1044 | if (dwarf_str_section) |
1045 | dwarf_str_buffer = dwarf2_read_section (objfile, dwarf_str_section); | |
4bdf3d34 JJ |
1046 | else |
1047 | dwarf_str_buffer = NULL; | |
1048 | ||
188dd5d6 | 1049 | if (dwarf_macinfo_section) |
2e276125 | 1050 | dwarf_macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1051 | dwarf_macinfo_section); |
2e276125 JB |
1052 | else |
1053 | dwarf_macinfo_buffer = NULL; | |
1054 | ||
188dd5d6 DJ |
1055 | if (dwarf_ranges_section) |
1056 | dwarf_ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); | |
af34e669 DJ |
1057 | else |
1058 | dwarf_ranges_buffer = NULL; | |
1059 | ||
188dd5d6 DJ |
1060 | if (dwarf_loc_section) |
1061 | dwarf_loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); | |
0d53c4c4 DJ |
1062 | else |
1063 | dwarf_loc_buffer = NULL; | |
1064 | ||
ef96bde8 EZ |
1065 | if (mainline |
1066 | || (objfile->global_psymbols.size == 0 | |
1067 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1068 | { |
1069 | init_psymbol_list (objfile, 1024); | |
1070 | } | |
1071 | ||
1072 | #if 0 | |
1073 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1074 | { | |
d4f3574e | 1075 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1076 | .debug_pubnames sections */ |
1077 | ||
d4f3574e | 1078 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1079 | } |
1080 | else | |
1081 | #endif | |
1082 | /* only test this case for now */ | |
c5aa993b | 1083 | { |
c906108c | 1084 | /* In this case we have to work a bit harder */ |
d4f3574e | 1085 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1086 | } |
1087 | } | |
1088 | ||
1089 | #if 0 | |
1090 | /* Build the partial symbol table from the information in the | |
1091 | .debug_pubnames and .debug_aranges sections. */ | |
1092 | ||
1093 | static void | |
fba45db2 | 1094 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1095 | { |
1096 | bfd *abfd = objfile->obfd; | |
1097 | char *aranges_buffer, *pubnames_buffer; | |
1098 | char *aranges_ptr, *pubnames_ptr; | |
1099 | unsigned int entry_length, version, info_offset, info_size; | |
1100 | ||
1101 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1102 | dwarf_pubnames_section); |
c906108c SS |
1103 | pubnames_ptr = pubnames_buffer; |
1104 | while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size) | |
1105 | { | |
613e1657 KB |
1106 | struct comp_unit_head cu_header; |
1107 | int bytes_read; | |
1108 | ||
1109 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
1110 | &bytes_read); | |
1111 | pubnames_ptr += bytes_read; | |
c906108c SS |
1112 | version = read_1_byte (abfd, pubnames_ptr); |
1113 | pubnames_ptr += 1; | |
1114 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1115 | pubnames_ptr += 4; | |
1116 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1117 | pubnames_ptr += 4; | |
1118 | } | |
1119 | ||
1120 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1121 | dwarf_aranges_section); |
c906108c SS |
1122 | |
1123 | } | |
1124 | #endif | |
1125 | ||
107d2387 AC |
1126 | /* Read in the comp unit header information from the debug_info at |
1127 | info_ptr. */ | |
1128 | ||
1129 | static char * | |
1130 | read_comp_unit_head (struct comp_unit_head *cu_header, | |
1131 | char *info_ptr, bfd *abfd) | |
1132 | { | |
1133 | int signed_addr; | |
613e1657 KB |
1134 | int bytes_read; |
1135 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, | |
1136 | &bytes_read); | |
1137 | info_ptr += bytes_read; | |
107d2387 AC |
1138 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1139 | info_ptr += 2; | |
613e1657 KB |
1140 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1141 | &bytes_read); | |
1142 | info_ptr += bytes_read; | |
107d2387 AC |
1143 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1144 | info_ptr += 1; | |
1145 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1146 | if (signed_addr < 0) | |
8e65ff28 AC |
1147 | internal_error (__FILE__, __LINE__, |
1148 | "read_comp_unit_head: dwarf from non elf file"); | |
107d2387 AC |
1149 | cu_header->signed_addr_p = signed_addr; |
1150 | return info_ptr; | |
1151 | } | |
1152 | ||
c906108c SS |
1153 | /* Build the partial symbol table by doing a quick pass through the |
1154 | .debug_info and .debug_abbrev sections. */ | |
1155 | ||
1156 | static void | |
fba45db2 | 1157 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1158 | { |
1159 | /* Instead of reading this into a big buffer, we should probably use | |
1160 | mmap() on architectures that support it. (FIXME) */ | |
1161 | bfd *abfd = objfile->obfd; | |
1162 | char *info_ptr, *abbrev_ptr; | |
1163 | char *beg_of_comp_unit; | |
c906108c SS |
1164 | struct partial_die_info comp_unit_die; |
1165 | struct partial_symtab *pst; | |
1166 | struct cleanup *back_to; | |
e142c38c | 1167 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1168 | |
c906108c SS |
1169 | info_ptr = dwarf_info_buffer; |
1170 | abbrev_ptr = dwarf_abbrev_buffer; | |
1171 | ||
9e84cbde JB |
1172 | /* We use dwarf2_tmp_obstack for objects that don't need to survive |
1173 | the partial symbol scan, like attribute values. | |
1174 | ||
1175 | We could reduce our peak memory consumption during partial symbol | |
1176 | table construction by freeing stuff from this obstack more often | |
1177 | --- say, after processing each compilation unit, or each die --- | |
1178 | but it turns out that this saves almost nothing. For an | |
1179 | executable with 11Mb of Dwarf 2 data, I found about 64k allocated | |
1180 | on dwarf2_tmp_obstack. Some investigation showed: | |
1181 | ||
1182 | 1) 69% of the attributes used forms DW_FORM_addr, DW_FORM_data*, | |
1183 | DW_FORM_flag, DW_FORM_[su]data, and DW_FORM_ref*. These are | |
1184 | all fixed-length values not requiring dynamic allocation. | |
1185 | ||
1186 | 2) 30% of the attributes used the form DW_FORM_string. For | |
1187 | DW_FORM_string, read_attribute simply hands back a pointer to | |
1188 | the null-terminated string in dwarf_info_buffer, so no dynamic | |
1189 | allocation is needed there either. | |
1190 | ||
1191 | 3) The remaining 1% of the attributes all used DW_FORM_block1. | |
1192 | 75% of those were DW_AT_frame_base location lists for | |
1193 | functions; the rest were DW_AT_location attributes, probably | |
1194 | for the global variables. | |
1195 | ||
1196 | Anyway, what this all means is that the memory the dwarf2 | |
1197 | reader uses as temporary space reading partial symbols is about | |
1198 | 0.5% as much as we use for dwarf_*_buffer. That's noise. */ | |
1199 | ||
c906108c SS |
1200 | obstack_init (&dwarf2_tmp_obstack); |
1201 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1202 | ||
af703f96 JB |
1203 | /* Since the objects we're extracting from dwarf_info_buffer vary in |
1204 | length, only the individual functions to extract them (like | |
1205 | read_comp_unit_head and read_partial_die) can really know whether | |
1206 | the buffer is large enough to hold another complete object. | |
1207 | ||
1208 | At the moment, they don't actually check that. If | |
1209 | dwarf_info_buffer holds just one extra byte after the last | |
1210 | compilation unit's dies, then read_comp_unit_head will happily | |
1211 | read off the end of the buffer. read_partial_die is similarly | |
1212 | casual. Those functions should be fixed. | |
1213 | ||
1214 | For this loop condition, simply checking whether there's any data | |
1215 | left at all should be sufficient. */ | |
2541c7cf | 1216 | while (info_ptr < dwarf_info_buffer + dwarf_info_size) |
c906108c | 1217 | { |
f3dd6933 | 1218 | struct cleanup *back_to_inner; |
e7c27a73 | 1219 | struct dwarf2_cu cu; |
c906108c | 1220 | beg_of_comp_unit = info_ptr; |
c906108c | 1221 | |
e7c27a73 DJ |
1222 | cu.objfile = objfile; |
1223 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); | |
1224 | ||
1225 | if (cu.header.version != 2) | |
c906108c | 1226 | { |
e7c27a73 | 1227 | error ("Dwarf Error: wrong version in compilation unit header (is %d, should be %d) [in module %s]", cu.header.version, 2, bfd_get_filename (abfd)); |
c906108c SS |
1228 | return; |
1229 | } | |
e7c27a73 | 1230 | if (cu.header.abbrev_offset >= dwarf_abbrev_size) |
c906108c | 1231 | { |
659b0389 | 1232 | error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6) [in module %s]", |
e7c27a73 | 1233 | (long) cu.header.abbrev_offset, |
659b0389 ML |
1234 | (long) (beg_of_comp_unit - dwarf_info_buffer), |
1235 | bfd_get_filename (abfd)); | |
c906108c SS |
1236 | return; |
1237 | } | |
e7c27a73 | 1238 | if (beg_of_comp_unit + cu.header.length + cu.header.initial_length_size |
c906108c SS |
1239 | > dwarf_info_buffer + dwarf_info_size) |
1240 | { | |
659b0389 | 1241 | error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0) [in module %s]", |
e7c27a73 | 1242 | (long) cu.header.length, |
659b0389 ML |
1243 | (long) (beg_of_comp_unit - dwarf_info_buffer), |
1244 | bfd_get_filename (abfd)); | |
c906108c SS |
1245 | return; |
1246 | } | |
57349743 | 1247 | /* Complete the cu_header */ |
e7c27a73 DJ |
1248 | cu.header.offset = beg_of_comp_unit - dwarf_info_buffer; |
1249 | cu.header.first_die_ptr = info_ptr; | |
1250 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1251 | |
e142c38c DJ |
1252 | cu.list_in_scope = &file_symbols; |
1253 | ||
c906108c | 1254 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1255 | dwarf2_read_abbrevs (abfd, &cu); |
f3dd6933 | 1256 | back_to_inner = make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c SS |
1257 | |
1258 | /* Read the compilation unit die */ | |
107d2387 | 1259 | info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr, |
e7c27a73 | 1260 | &cu); |
c906108c SS |
1261 | |
1262 | /* Set the language we're debugging */ | |
e142c38c | 1263 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1264 | |
1265 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1266 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1267 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1268 | comp_unit_die.lowpc, |
1269 | objfile->global_psymbols.next, | |
1270 | objfile->static_psymbols.next); | |
1271 | ||
1272 | pst->read_symtab_private = (char *) | |
8b92e4d5 | 1273 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct dwarf2_pinfo)); |
c5aa993b JM |
1274 | DWARF_INFO_BUFFER (pst) = dwarf_info_buffer; |
1275 | DWARF_INFO_OFFSET (pst) = beg_of_comp_unit - dwarf_info_buffer; | |
1276 | DWARF_ABBREV_BUFFER (pst) = dwarf_abbrev_buffer; | |
1277 | DWARF_ABBREV_SIZE (pst) = dwarf_abbrev_size; | |
1278 | DWARF_LINE_BUFFER (pst) = dwarf_line_buffer; | |
9ab3e532 | 1279 | DWARF_LINE_SIZE (pst) = dwarf_line_size; |
4bdf3d34 JJ |
1280 | DWARF_STR_BUFFER (pst) = dwarf_str_buffer; |
1281 | DWARF_STR_SIZE (pst) = dwarf_str_size; | |
2e276125 JB |
1282 | DWARF_MACINFO_BUFFER (pst) = dwarf_macinfo_buffer; |
1283 | DWARF_MACINFO_SIZE (pst) = dwarf_macinfo_size; | |
af34e669 DJ |
1284 | DWARF_RANGES_BUFFER (pst) = dwarf_ranges_buffer; |
1285 | DWARF_RANGES_SIZE (pst) = dwarf_ranges_size; | |
0d53c4c4 DJ |
1286 | DWARF_LOC_BUFFER (pst) = dwarf_loc_buffer; |
1287 | DWARF_LOC_SIZE (pst) = dwarf_loc_size; | |
613e1657 | 1288 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1289 | |
1290 | /* Store the function that reads in the rest of the symbol table */ | |
1291 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1292 | ||
1293 | /* Check if comp unit has_children. | |
1294 | If so, read the rest of the partial symbols from this comp unit. | |
1295 | If not, there's no more debug_info for this comp unit. */ | |
1296 | if (comp_unit_die.has_children) | |
1297 | { | |
91c24f0a DC |
1298 | lowpc = ((CORE_ADDR) -1); |
1299 | highpc = ((CORE_ADDR) 0); | |
1300 | ||
e7c27a73 DJ |
1301 | info_ptr = scan_partial_symbols (info_ptr, &lowpc, &highpc, |
1302 | &cu, NULL); | |
c906108c | 1303 | |
91c24f0a DC |
1304 | /* If we didn't find a lowpc, set it to highpc to avoid |
1305 | complaints from `maint check'. */ | |
1306 | if (lowpc == ((CORE_ADDR) -1)) | |
1307 | lowpc = highpc; | |
1308 | ||
c906108c SS |
1309 | /* If the compilation unit didn't have an explicit address range, |
1310 | then use the information extracted from its child dies. */ | |
0b010bcc | 1311 | if (! comp_unit_die.has_pc_info) |
c906108c | 1312 | { |
c5aa993b | 1313 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1314 | comp_unit_die.highpc = highpc; |
1315 | } | |
1316 | } | |
c5aa993b | 1317 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1318 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1319 | ||
1320 | pst->n_global_syms = objfile->global_psymbols.next - | |
1321 | (objfile->global_psymbols.list + pst->globals_offset); | |
1322 | pst->n_static_syms = objfile->static_psymbols.next - | |
1323 | (objfile->static_psymbols.list + pst->statics_offset); | |
1324 | sort_pst_symbols (pst); | |
1325 | ||
1326 | /* If there is already a psymtab or symtab for a file of this | |
1327 | name, remove it. (If there is a symtab, more drastic things | |
1328 | also happen.) This happens in VxWorks. */ | |
1329 | free_named_symtabs (pst->filename); | |
1330 | ||
e7c27a73 DJ |
1331 | info_ptr = beg_of_comp_unit + cu.header.length |
1332 | + cu.header.initial_length_size; | |
f3dd6933 DJ |
1333 | |
1334 | do_cleanups (back_to_inner); | |
c906108c SS |
1335 | } |
1336 | do_cleanups (back_to); | |
1337 | } | |
1338 | ||
91c24f0a | 1339 | /* Read in all interesting dies to the end of the compilation unit or |
5c4e30ca DC |
1340 | to the end of the current namespace. NAMESPACE is NULL if we |
1341 | haven't yet encountered any DW_TAG_namespace entries; otherwise, | |
1342 | it's the name of the current namespace. In particular, it's the | |
1343 | empty string if we're currently in the global namespace but have | |
1344 | previously encountered a DW_TAG_namespace. */ | |
c906108c SS |
1345 | |
1346 | static char * | |
e7c27a73 DJ |
1347 | scan_partial_symbols (char *info_ptr, CORE_ADDR *lowpc, |
1348 | CORE_ADDR *highpc, struct dwarf2_cu *cu, | |
5c4e30ca | 1349 | const char *namespace) |
c906108c | 1350 | { |
e7c27a73 | 1351 | struct objfile *objfile = cu->objfile; |
c906108c SS |
1352 | bfd *abfd = objfile->obfd; |
1353 | struct partial_die_info pdi; | |
1354 | ||
91c24f0a DC |
1355 | /* Now, march along the PDI's, descending into ones which have |
1356 | interesting children but skipping the children of the other ones, | |
1357 | until we reach the end of the compilation unit. */ | |
c906108c | 1358 | |
91c24f0a | 1359 | while (1) |
c906108c | 1360 | { |
91c24f0a DC |
1361 | /* This flag tells whether or not info_ptr has gotten updated |
1362 | inside the loop. */ | |
1363 | int info_ptr_updated = 0; | |
1364 | ||
e7c27a73 | 1365 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
c906108c | 1366 | |
91c24f0a DC |
1367 | /* Anonymous namespaces have no name but have interesting |
1368 | children, so we need to look at them. Ditto for anonymous | |
1369 | enums. */ | |
933c6fe4 | 1370 | |
91c24f0a DC |
1371 | if (pdi.name != NULL || pdi.tag == DW_TAG_namespace |
1372 | || pdi.tag == DW_TAG_enumeration_type) | |
c906108c SS |
1373 | { |
1374 | switch (pdi.tag) | |
1375 | { | |
1376 | case DW_TAG_subprogram: | |
0b010bcc | 1377 | if (pdi.has_pc_info) |
c906108c SS |
1378 | { |
1379 | if (pdi.lowpc < *lowpc) | |
1380 | { | |
1381 | *lowpc = pdi.lowpc; | |
1382 | } | |
1383 | if (pdi.highpc > *highpc) | |
1384 | { | |
1385 | *highpc = pdi.highpc; | |
1386 | } | |
91c24f0a | 1387 | if (!pdi.is_declaration) |
c906108c | 1388 | { |
e7c27a73 | 1389 | add_partial_symbol (&pdi, cu, namespace); |
c906108c SS |
1390 | } |
1391 | } | |
1392 | break; | |
1393 | case DW_TAG_variable: | |
1394 | case DW_TAG_typedef: | |
91c24f0a | 1395 | case DW_TAG_union_type: |
63d06c5c DC |
1396 | if (!pdi.is_declaration) |
1397 | { | |
1398 | add_partial_symbol (&pdi, cu, namespace); | |
1399 | } | |
1400 | break; | |
c906108c SS |
1401 | case DW_TAG_class_type: |
1402 | case DW_TAG_structure_type: | |
91c24f0a | 1403 | if (!pdi.is_declaration) |
c906108c | 1404 | { |
63d06c5c DC |
1405 | info_ptr = add_partial_structure (&pdi, info_ptr, cu, |
1406 | namespace); | |
1407 | info_ptr_updated = 1; | |
c906108c SS |
1408 | } |
1409 | break; | |
91c24f0a DC |
1410 | case DW_TAG_enumeration_type: |
1411 | if (!pdi.is_declaration) | |
1412 | { | |
e7c27a73 | 1413 | info_ptr = add_partial_enumeration (&pdi, info_ptr, cu, |
5c4e30ca | 1414 | namespace); |
91c24f0a DC |
1415 | info_ptr_updated = 1; |
1416 | } | |
c906108c SS |
1417 | break; |
1418 | case DW_TAG_base_type: | |
a02abb62 | 1419 | case DW_TAG_subrange_type: |
c906108c | 1420 | /* File scope base type definitions are added to the partial |
c5aa993b | 1421 | symbol table. */ |
e7c27a73 | 1422 | add_partial_symbol (&pdi, cu, namespace); |
c906108c | 1423 | break; |
d9fa45fe | 1424 | case DW_TAG_namespace: |
5c4e30ca DC |
1425 | /* We've hit a DW_TAG_namespace entry, so we know this |
1426 | file has been compiled using a compiler that | |
1427 | generates them; update NAMESPACE to reflect that. */ | |
1428 | if (namespace == NULL) | |
1429 | namespace = ""; | |
e7c27a73 DJ |
1430 | info_ptr = add_partial_namespace (&pdi, info_ptr, lowpc, highpc, |
1431 | cu, namespace); | |
91c24f0a DC |
1432 | info_ptr_updated = 1; |
1433 | break; | |
c906108c SS |
1434 | default: |
1435 | break; | |
1436 | } | |
1437 | } | |
1438 | ||
c906108c | 1439 | if (pdi.tag == 0) |
91c24f0a DC |
1440 | break; |
1441 | ||
1442 | /* If the die has a sibling, skip to the sibling, unless another | |
1443 | function has already updated info_ptr for us. */ | |
1444 | ||
1445 | /* NOTE: carlton/2003-06-16: This is a bit hackish, but whether | |
1446 | or not we want to update this depends on enough stuff (not | |
1447 | only pdi.tag but also whether or not pdi.name is NULL) that | |
1448 | this seems like the easiest way to handle the issue. */ | |
1449 | ||
1450 | if (!info_ptr_updated) | |
e7c27a73 | 1451 | info_ptr = locate_pdi_sibling (&pdi, info_ptr, abfd, cu); |
c906108c SS |
1452 | } |
1453 | ||
c906108c SS |
1454 | return info_ptr; |
1455 | } | |
1456 | ||
1457 | static void | |
e7c27a73 DJ |
1458 | add_partial_symbol (struct partial_die_info *pdi, |
1459 | struct dwarf2_cu *cu, const char *namespace) | |
c906108c | 1460 | { |
e7c27a73 | 1461 | struct objfile *objfile = cu->objfile; |
c906108c | 1462 | CORE_ADDR addr = 0; |
38d518c9 | 1463 | char *actual_name = pdi->name; |
5c4e30ca | 1464 | const struct partial_symbol *psym = NULL; |
e142c38c DJ |
1465 | CORE_ADDR baseaddr; |
1466 | ||
1467 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1468 | |
63d06c5c DC |
1469 | /* If we're not in the global namespace and if the namespace name |
1470 | isn't encoded in a mangled actual_name, add it. */ | |
1471 | ||
1472 | if (pdi_needs_namespace (pdi->tag, namespace)) | |
1473 | { | |
1474 | actual_name = alloca (strlen (pdi->name) + 2 + strlen (namespace) + 1); | |
1475 | strcpy (actual_name, namespace); | |
1476 | strcat (actual_name, "::"); | |
1477 | strcat (actual_name, pdi->name); | |
1478 | } | |
1479 | ||
c906108c SS |
1480 | switch (pdi->tag) |
1481 | { | |
1482 | case DW_TAG_subprogram: | |
1483 | if (pdi->is_external) | |
1484 | { | |
38d518c9 | 1485 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1486 | mst_text, objfile); */ |
38d518c9 | 1487 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1488 | VAR_DOMAIN, LOC_BLOCK, |
1489 | &objfile->global_psymbols, | |
1490 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1491 | cu->language, objfile); |
c906108c SS |
1492 | } |
1493 | else | |
1494 | { | |
38d518c9 | 1495 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1496 | mst_file_text, objfile); */ |
38d518c9 | 1497 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1498 | VAR_DOMAIN, LOC_BLOCK, |
1499 | &objfile->static_psymbols, | |
1500 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1501 | cu->language, objfile); |
c906108c SS |
1502 | } |
1503 | break; | |
1504 | case DW_TAG_variable: | |
1505 | if (pdi->is_external) | |
1506 | { | |
1507 | /* Global Variable. | |
1508 | Don't enter into the minimal symbol tables as there is | |
1509 | a minimal symbol table entry from the ELF symbols already. | |
1510 | Enter into partial symbol table if it has a location | |
1511 | descriptor or a type. | |
1512 | If the location descriptor is missing, new_symbol will create | |
1513 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1514 | be determined from the minimal symbol table whenever the variable | |
1515 | is referenced. | |
1516 | The address for the partial symbol table entry is not | |
1517 | used by GDB, but it comes in handy for debugging partial symbol | |
1518 | table building. */ | |
1519 | ||
1520 | if (pdi->locdesc) | |
e7c27a73 | 1521 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1522 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1523 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1524 | VAR_DOMAIN, LOC_STATIC, |
1525 | &objfile->global_psymbols, | |
1526 | 0, addr + baseaddr, | |
e142c38c | 1527 | cu->language, objfile); |
c906108c SS |
1528 | } |
1529 | else | |
1530 | { | |
1531 | /* Static Variable. Skip symbols without location descriptors. */ | |
1532 | if (pdi->locdesc == NULL) | |
1533 | return; | |
e7c27a73 | 1534 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1535 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1536 | mst_file_data, objfile); */ |
38d518c9 | 1537 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1538 | VAR_DOMAIN, LOC_STATIC, |
1539 | &objfile->static_psymbols, | |
1540 | 0, addr + baseaddr, | |
e142c38c | 1541 | cu->language, objfile); |
c906108c SS |
1542 | } |
1543 | break; | |
1544 | case DW_TAG_typedef: | |
1545 | case DW_TAG_base_type: | |
a02abb62 | 1546 | case DW_TAG_subrange_type: |
38d518c9 | 1547 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1548 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1549 | &objfile->static_psymbols, |
e142c38c | 1550 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1551 | break; |
1552 | case DW_TAG_class_type: | |
1553 | case DW_TAG_structure_type: | |
1554 | case DW_TAG_union_type: | |
1555 | case DW_TAG_enumeration_type: | |
1556 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1557 | references. */ |
63d06c5c DC |
1558 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1559 | static vs. global. */ | |
c906108c SS |
1560 | if (pdi->has_children == 0) |
1561 | return; | |
38d518c9 | 1562 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1563 | STRUCT_DOMAIN, LOC_TYPEDEF, |
e142c38c | 1564 | cu->language == language_cplus |
63d06c5c DC |
1565 | ? &objfile->global_psymbols |
1566 | : &objfile->static_psymbols, | |
e142c38c | 1567 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1568 | |
e142c38c | 1569 | if (cu->language == language_cplus) |
c906108c SS |
1570 | { |
1571 | /* For C++, these implicitly act as typedefs as well. */ | |
38d518c9 | 1572 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1573 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1574 | &objfile->global_psymbols, |
e142c38c | 1575 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1576 | } |
1577 | break; | |
1578 | case DW_TAG_enumerator: | |
38d518c9 | 1579 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1580 | VAR_DOMAIN, LOC_CONST, |
e142c38c | 1581 | cu->language == language_cplus |
f6fe98ef DJ |
1582 | ? &objfile->global_psymbols |
1583 | : &objfile->static_psymbols, | |
e142c38c | 1584 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1585 | break; |
1586 | default: | |
1587 | break; | |
1588 | } | |
5c4e30ca DC |
1589 | |
1590 | /* Check to see if we should scan the name for possible namespace | |
1591 | info. Only do this if this is C++, if we don't have namespace | |
1592 | debugging info in the file, if the psym is of an appropriate type | |
1593 | (otherwise we'll have psym == NULL), and if we actually had a | |
1594 | mangled name to begin with. */ | |
1595 | ||
e142c38c | 1596 | if (cu->language == language_cplus |
5c4e30ca DC |
1597 | && namespace == NULL |
1598 | && psym != NULL | |
1599 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
1600 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
1601 | objfile); | |
c906108c SS |
1602 | } |
1603 | ||
63d06c5c DC |
1604 | /* Determine whether a die of type TAG living in the C++ namespace |
1605 | NAMESPACE needs to have the name of the namespace prepended to the | |
1606 | name listed in the die. */ | |
1607 | ||
1608 | static int | |
1609 | pdi_needs_namespace (enum dwarf_tag tag, const char *namespace) | |
1610 | { | |
1611 | if (namespace == NULL || namespace[0] == '\0') | |
1612 | return 0; | |
1613 | ||
1614 | switch (tag) | |
1615 | { | |
1616 | case DW_TAG_typedef: | |
1617 | case DW_TAG_class_type: | |
1618 | case DW_TAG_structure_type: | |
1619 | case DW_TAG_union_type: | |
1620 | case DW_TAG_enumeration_type: | |
1621 | case DW_TAG_enumerator: | |
1622 | return 1; | |
1623 | default: | |
1624 | return 0; | |
1625 | } | |
1626 | } | |
1627 | ||
5c4e30ca DC |
1628 | /* Read a partial die corresponding to a namespace; also, add a symbol |
1629 | corresponding to that namespace to the symbol table. NAMESPACE is | |
1630 | the name of the enclosing namespace. */ | |
91c24f0a DC |
1631 | |
1632 | static char * | |
1633 | add_partial_namespace (struct partial_die_info *pdi, char *info_ptr, | |
91c24f0a | 1634 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 1635 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1636 | { |
e7c27a73 | 1637 | struct objfile *objfile = cu->objfile; |
5c4e30ca DC |
1638 | const char *new_name = pdi->name; |
1639 | char *full_name; | |
1640 | ||
e7c27a73 DJ |
1641 | /* Calculate the full name of the namespace that we just entered. */ |
1642 | ||
5c4e30ca DC |
1643 | if (new_name == NULL) |
1644 | new_name = "(anonymous namespace)"; | |
1645 | full_name = alloca (strlen (namespace) + 2 + strlen (new_name) + 1); | |
1646 | strcpy (full_name, namespace); | |
1647 | if (*namespace != '\0') | |
1648 | strcat (full_name, "::"); | |
1649 | strcat (full_name, new_name); | |
1650 | ||
63d06c5c DC |
1651 | /* FIXME: carlton/2003-10-07: We can't just replace this by a call |
1652 | to add_partial_symbol, because we don't have a way to pass in the | |
1653 | full name to that function; that might be a flaw in | |
1654 | add_partial_symbol's interface. */ | |
5c4e30ca DC |
1655 | |
1656 | add_psymbol_to_list (full_name, strlen (full_name), | |
1657 | VAR_DOMAIN, LOC_TYPEDEF, | |
1658 | &objfile->global_psymbols, | |
e142c38c | 1659 | 0, 0, cu->language, objfile); |
5c4e30ca DC |
1660 | |
1661 | /* Now scan partial symbols in that namespace. */ | |
1662 | ||
91c24f0a | 1663 | if (pdi->has_children) |
e7c27a73 | 1664 | info_ptr = scan_partial_symbols (info_ptr, lowpc, highpc, cu, full_name); |
91c24f0a DC |
1665 | |
1666 | return info_ptr; | |
1667 | } | |
1668 | ||
63d06c5c DC |
1669 | /* Read a partial die corresponding to a class or structure. */ |
1670 | ||
1671 | static char * | |
1672 | add_partial_structure (struct partial_die_info *struct_pdi, char *info_ptr, | |
1673 | struct dwarf2_cu *cu, | |
1674 | const char *namespace) | |
1675 | { | |
1676 | bfd *abfd = cu->objfile->obfd; | |
1677 | char *actual_class_name = NULL; | |
1678 | ||
e142c38c | 1679 | if (cu->language == language_cplus |
5d51ca54 | 1680 | && (namespace == NULL || namespace[0] == '\0') |
63d06c5c DC |
1681 | && struct_pdi->name != NULL |
1682 | && struct_pdi->has_children) | |
1683 | { | |
5d51ca54 DC |
1684 | /* See if we can figure out if the class lives in a namespace |
1685 | (or is nested within another class.) We do this by looking | |
63d06c5c DC |
1686 | for a member function; its demangled name will contain |
1687 | namespace info, if there is any. */ | |
1688 | ||
1689 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
1690 | what template types look like, because the demangler | |
1691 | frequently doesn't give the same name as the debug info. We | |
1692 | could fix this by only using the demangled name to get the | |
1693 | prefix (but see comment in read_structure_scope). */ | |
1694 | ||
5d51ca54 DC |
1695 | /* FIXME: carlton/2004-01-23: If NAMESPACE equals "", we have |
1696 | the appropriate debug information, so it would be nice to be | |
1697 | able to avoid this hack. But NAMESPACE may not be the | |
1698 | namespace where this class was defined: NAMESPACE reflects | |
1699 | where STRUCT_PDI occurs in the tree of dies, but because of | |
1700 | DW_AT_specification, that may not actually tell us where the | |
1701 | class is defined. (See the comment in read_func_scope for an | |
1702 | example of how this could occur.) | |
1703 | ||
1704 | Unfortunately, our current partial symtab data structures are | |
1705 | completely unable to deal with DW_AT_specification. So, for | |
1706 | now, the best thing to do is to get nesting information from | |
1707 | places other than the tree structure of dies if there's any | |
1708 | chance that a DW_AT_specification is involved. :-( */ | |
1709 | ||
63d06c5c DC |
1710 | char *next_child = info_ptr; |
1711 | ||
1712 | while (1) | |
1713 | { | |
1714 | struct partial_die_info child_pdi; | |
1715 | ||
1716 | next_child = read_partial_die (&child_pdi, abfd, next_child, | |
1717 | cu); | |
1718 | if (!child_pdi.tag) | |
1719 | break; | |
1720 | if (child_pdi.tag == DW_TAG_subprogram) | |
1721 | { | |
1722 | actual_class_name = class_name_from_physname (child_pdi.name); | |
1723 | if (actual_class_name != NULL) | |
1724 | struct_pdi->name = actual_class_name; | |
1725 | break; | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | next_child = locate_pdi_sibling (&child_pdi, next_child, | |
1730 | abfd, cu); | |
1731 | } | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | add_partial_symbol (struct_pdi, cu, namespace); | |
e142c38c | 1736 | xfree (actual_class_name); |
63d06c5c DC |
1737 | |
1738 | return locate_pdi_sibling (struct_pdi, info_ptr, abfd, cu); | |
1739 | } | |
1740 | ||
91c24f0a DC |
1741 | /* Read a partial die corresponding to an enumeration type. */ |
1742 | ||
1743 | static char * | |
1744 | add_partial_enumeration (struct partial_die_info *enum_pdi, char *info_ptr, | |
e7c27a73 | 1745 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1746 | { |
e7c27a73 | 1747 | struct objfile *objfile = cu->objfile; |
91c24f0a DC |
1748 | bfd *abfd = objfile->obfd; |
1749 | struct partial_die_info pdi; | |
1750 | ||
1751 | if (enum_pdi->name != NULL) | |
e7c27a73 | 1752 | add_partial_symbol (enum_pdi, cu, namespace); |
91c24f0a DC |
1753 | |
1754 | while (1) | |
1755 | { | |
e7c27a73 | 1756 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
91c24f0a DC |
1757 | if (pdi.tag == 0) |
1758 | break; | |
1759 | if (pdi.tag != DW_TAG_enumerator || pdi.name == NULL) | |
1760 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); | |
1761 | else | |
e7c27a73 | 1762 | add_partial_symbol (&pdi, cu, namespace); |
91c24f0a DC |
1763 | } |
1764 | ||
1765 | return info_ptr; | |
1766 | } | |
1767 | ||
1768 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the next DIE | |
1769 | after ORIG_PDI. */ | |
1770 | ||
1771 | static char * | |
1772 | locate_pdi_sibling (struct partial_die_info *orig_pdi, char *info_ptr, | |
e7c27a73 | 1773 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
1774 | { |
1775 | /* Do we know the sibling already? */ | |
1776 | ||
1777 | if (orig_pdi->sibling) | |
1778 | return orig_pdi->sibling; | |
1779 | ||
1780 | /* Are there any children to deal with? */ | |
1781 | ||
1782 | if (!orig_pdi->has_children) | |
1783 | return info_ptr; | |
1784 | ||
1785 | /* Okay, we don't know the sibling, but we have children that we | |
1786 | want to skip. So read children until we run into one without a | |
1787 | tag; return whatever follows it. */ | |
1788 | ||
1789 | while (1) | |
1790 | { | |
1791 | struct partial_die_info pdi; | |
1792 | ||
e7c27a73 | 1793 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
91c24f0a DC |
1794 | |
1795 | if (pdi.tag == 0) | |
1796 | return info_ptr; | |
1797 | else | |
e7c27a73 | 1798 | info_ptr = locate_pdi_sibling (&pdi, info_ptr, abfd, cu); |
91c24f0a DC |
1799 | } |
1800 | } | |
1801 | ||
c906108c SS |
1802 | /* Expand this partial symbol table into a full symbol table. */ |
1803 | ||
1804 | static void | |
fba45db2 | 1805 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1806 | { |
1807 | /* FIXME: This is barely more than a stub. */ | |
1808 | if (pst != NULL) | |
1809 | { | |
1810 | if (pst->readin) | |
1811 | { | |
1812 | warning ("bug: psymtab for %s is already read in.", pst->filename); | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | if (info_verbose) | |
1817 | { | |
1818 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1819 | gdb_flush (gdb_stdout); | |
1820 | } | |
1821 | ||
1822 | psymtab_to_symtab_1 (pst); | |
1823 | ||
1824 | /* Finish up the debug error message. */ | |
1825 | if (info_verbose) | |
1826 | printf_filtered ("done.\n"); | |
1827 | } | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | static void | |
fba45db2 | 1832 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1833 | { |
1834 | struct objfile *objfile = pst->objfile; | |
1835 | bfd *abfd = objfile->obfd; | |
e7c27a73 | 1836 | struct dwarf2_cu cu; |
c906108c SS |
1837 | struct die_info *dies; |
1838 | unsigned long offset; | |
1839 | CORE_ADDR lowpc, highpc; | |
1840 | struct die_info *child_die; | |
1841 | char *info_ptr; | |
1842 | struct symtab *symtab; | |
1843 | struct cleanup *back_to; | |
0d53c4c4 | 1844 | struct attribute *attr; |
e142c38c | 1845 | CORE_ADDR baseaddr; |
c906108c SS |
1846 | |
1847 | /* Set local variables from the partial symbol table info. */ | |
c5aa993b JM |
1848 | offset = DWARF_INFO_OFFSET (pst); |
1849 | dwarf_info_buffer = DWARF_INFO_BUFFER (pst); | |
1850 | dwarf_abbrev_buffer = DWARF_ABBREV_BUFFER (pst); | |
1851 | dwarf_abbrev_size = DWARF_ABBREV_SIZE (pst); | |
1852 | dwarf_line_buffer = DWARF_LINE_BUFFER (pst); | |
9ab3e532 | 1853 | dwarf_line_size = DWARF_LINE_SIZE (pst); |
4bdf3d34 JJ |
1854 | dwarf_str_buffer = DWARF_STR_BUFFER (pst); |
1855 | dwarf_str_size = DWARF_STR_SIZE (pst); | |
2e276125 JB |
1856 | dwarf_macinfo_buffer = DWARF_MACINFO_BUFFER (pst); |
1857 | dwarf_macinfo_size = DWARF_MACINFO_SIZE (pst); | |
af34e669 DJ |
1858 | dwarf_ranges_buffer = DWARF_RANGES_BUFFER (pst); |
1859 | dwarf_ranges_size = DWARF_RANGES_SIZE (pst); | |
0d53c4c4 DJ |
1860 | dwarf_loc_buffer = DWARF_LOC_BUFFER (pst); |
1861 | dwarf_loc_size = DWARF_LOC_SIZE (pst); | |
c906108c | 1862 | info_ptr = dwarf_info_buffer + offset; |
e142c38c | 1863 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 1864 | |
63d06c5c DC |
1865 | /* We're in the global namespace. */ |
1866 | processing_current_prefix = ""; | |
1867 | ||
c906108c SS |
1868 | obstack_init (&dwarf2_tmp_obstack); |
1869 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1870 | ||
1871 | buildsym_init (); | |
a0b3c4fd | 1872 | make_cleanup (really_free_pendings, NULL); |
c906108c | 1873 | |
e7c27a73 DJ |
1874 | cu.objfile = objfile; |
1875 | ||
c906108c | 1876 | /* read in the comp_unit header */ |
e7c27a73 | 1877 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); |
c906108c SS |
1878 | |
1879 | /* Read the abbrevs for this compilation unit */ | |
e7c27a73 | 1880 | dwarf2_read_abbrevs (abfd, &cu); |
f3dd6933 | 1881 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1882 | |
e142c38c DJ |
1883 | cu.header.offset = offset; |
1884 | ||
1885 | cu.list_in_scope = &file_symbols; | |
1886 | ||
e7c27a73 | 1887 | dies = read_comp_unit (info_ptr, abfd, &cu); |
c906108c | 1888 | |
74b7792f | 1889 | make_cleanup_free_die_list (dies); |
c906108c | 1890 | |
0d53c4c4 DJ |
1891 | /* Find the base address of the compilation unit for range lists and |
1892 | location lists. It will normally be specified by DW_AT_low_pc. | |
1893 | In DWARF-3 draft 4, the base address could be overridden by | |
1894 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
1895 | compilation units with discontinuous ranges. */ | |
1896 | ||
e7c27a73 DJ |
1897 | cu.header.base_known = 0; |
1898 | cu.header.base_address = 0; | |
0d53c4c4 | 1899 | |
e142c38c | 1900 | attr = dwarf2_attr (dies, DW_AT_entry_pc, &cu); |
0d53c4c4 DJ |
1901 | if (attr) |
1902 | { | |
e7c27a73 DJ |
1903 | cu.header.base_address = DW_ADDR (attr); |
1904 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
1905 | } |
1906 | else | |
1907 | { | |
e142c38c | 1908 | attr = dwarf2_attr (dies, DW_AT_low_pc, &cu); |
0d53c4c4 DJ |
1909 | if (attr) |
1910 | { | |
e7c27a73 DJ |
1911 | cu.header.base_address = DW_ADDR (attr); |
1912 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
1913 | } |
1914 | } | |
1915 | ||
c906108c | 1916 | /* Do line number decoding in read_file_scope () */ |
e7c27a73 | 1917 | process_die (dies, &cu); |
c906108c | 1918 | |
fae299cd DC |
1919 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
1920 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
1921 | it, by scanning the DIE's below the compilation unit. */ | |
1922 | get_scope_pc_bounds (dies, &lowpc, &highpc, &cu); | |
c906108c | 1923 | |
613e1657 | 1924 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1925 | |
1926 | /* Set symtab language to language from DW_AT_language. | |
1927 | If the compilation is from a C file generated by language preprocessors, | |
1928 | do not set the language if it was already deduced by start_subfile. */ | |
1929 | if (symtab != NULL | |
e142c38c | 1930 | && !(cu.language == language_c && symtab->language != language_c)) |
c906108c | 1931 | { |
e142c38c | 1932 | symtab->language = cu.language; |
c906108c SS |
1933 | } |
1934 | pst->symtab = symtab; | |
1935 | pst->readin = 1; | |
c906108c SS |
1936 | |
1937 | do_cleanups (back_to); | |
1938 | } | |
1939 | ||
1940 | /* Process a die and its children. */ | |
1941 | ||
1942 | static void | |
e7c27a73 | 1943 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
1944 | { |
1945 | switch (die->tag) | |
1946 | { | |
1947 | case DW_TAG_padding: | |
1948 | break; | |
1949 | case DW_TAG_compile_unit: | |
e7c27a73 | 1950 | read_file_scope (die, cu); |
c906108c SS |
1951 | break; |
1952 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
1953 | read_subroutine_type (die, cu); |
1954 | read_func_scope (die, cu); | |
c906108c SS |
1955 | break; |
1956 | case DW_TAG_inlined_subroutine: | |
1957 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
1958 | They could be used to set breakpoints on all inlined instances |
1959 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
1960 | break; |
1961 | case DW_TAG_lexical_block: | |
14898363 L |
1962 | case DW_TAG_try_block: |
1963 | case DW_TAG_catch_block: | |
e7c27a73 | 1964 | read_lexical_block_scope (die, cu); |
c906108c SS |
1965 | break; |
1966 | case DW_TAG_class_type: | |
1967 | case DW_TAG_structure_type: | |
1968 | case DW_TAG_union_type: | |
e7c27a73 | 1969 | read_structure_scope (die, cu); |
c906108c SS |
1970 | break; |
1971 | case DW_TAG_enumeration_type: | |
e7c27a73 | 1972 | read_enumeration (die, cu); |
c906108c SS |
1973 | break; |
1974 | case DW_TAG_subroutine_type: | |
e7c27a73 | 1975 | read_subroutine_type (die, cu); |
c906108c SS |
1976 | break; |
1977 | case DW_TAG_array_type: | |
e7c27a73 | 1978 | read_array_type (die, cu); |
c906108c SS |
1979 | break; |
1980 | case DW_TAG_pointer_type: | |
e7c27a73 | 1981 | read_tag_pointer_type (die, cu); |
c906108c SS |
1982 | break; |
1983 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 1984 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
1985 | break; |
1986 | case DW_TAG_reference_type: | |
e7c27a73 | 1987 | read_tag_reference_type (die, cu); |
c906108c SS |
1988 | break; |
1989 | case DW_TAG_string_type: | |
e7c27a73 | 1990 | read_tag_string_type (die, cu); |
c906108c SS |
1991 | break; |
1992 | case DW_TAG_base_type: | |
e7c27a73 | 1993 | read_base_type (die, cu); |
e142c38c | 1994 | if (dwarf2_attr (die, DW_AT_name, cu)) |
c906108c SS |
1995 | { |
1996 | /* Add a typedef symbol for the base type definition. */ | |
e7c27a73 | 1997 | new_symbol (die, die->type, cu); |
c906108c SS |
1998 | } |
1999 | break; | |
a02abb62 JB |
2000 | case DW_TAG_subrange_type: |
2001 | read_subrange_type (die, cu); | |
e142c38c | 2002 | if (dwarf2_attr (die, DW_AT_name, cu)) |
a02abb62 JB |
2003 | { |
2004 | /* Add a typedef symbol for the base type definition. */ | |
2005 | new_symbol (die, die->type, cu); | |
2006 | } | |
2007 | break; | |
c906108c | 2008 | case DW_TAG_common_block: |
e7c27a73 | 2009 | read_common_block (die, cu); |
c906108c SS |
2010 | break; |
2011 | case DW_TAG_common_inclusion: | |
2012 | break; | |
d9fa45fe | 2013 | case DW_TAG_namespace: |
63d06c5c | 2014 | processing_has_namespace_info = 1; |
e7c27a73 | 2015 | read_namespace (die, cu); |
d9fa45fe DC |
2016 | break; |
2017 | case DW_TAG_imported_declaration: | |
2018 | case DW_TAG_imported_module: | |
2019 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2020 | information contained in these. DW_TAG_imported_declaration | |
2021 | dies shouldn't have children; DW_TAG_imported_module dies | |
2022 | shouldn't in the C++ case, but conceivably could in the | |
2023 | Fortran case, so we'll have to replace this gdb_assert if | |
2024 | Fortran compilers start generating that info. */ | |
63d06c5c | 2025 | processing_has_namespace_info = 1; |
639d11d3 | 2026 | gdb_assert (die->child == NULL); |
d9fa45fe | 2027 | break; |
c906108c | 2028 | default: |
e7c27a73 | 2029 | new_symbol (die, NULL, cu); |
c906108c SS |
2030 | break; |
2031 | } | |
2032 | } | |
2033 | ||
5fb290d7 | 2034 | static void |
e142c38c | 2035 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2036 | { |
e142c38c | 2037 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2038 | } |
2039 | ||
c906108c | 2040 | static void |
e7c27a73 | 2041 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2042 | { |
e7c27a73 DJ |
2043 | struct objfile *objfile = cu->objfile; |
2044 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2045 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2046 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2047 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2048 | struct attribute *attr; | |
2049 | char *name = "<unknown>"; | |
2050 | char *comp_dir = NULL; | |
2051 | struct die_info *child_die; | |
2052 | bfd *abfd = objfile->obfd; | |
debd256d | 2053 | struct line_header *line_header = 0; |
e142c38c DJ |
2054 | CORE_ADDR baseaddr; |
2055 | ||
2056 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2057 | |
fae299cd | 2058 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2059 | |
2060 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2061 | from finish_block. */ | |
2acceee2 | 2062 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2063 | lowpc = highpc; |
2064 | lowpc += baseaddr; | |
2065 | highpc += baseaddr; | |
2066 | ||
e142c38c | 2067 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2068 | if (attr) |
2069 | { | |
2070 | name = DW_STRING (attr); | |
2071 | } | |
e142c38c | 2072 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2073 | if (attr) |
2074 | { | |
2075 | comp_dir = DW_STRING (attr); | |
2076 | if (comp_dir) | |
2077 | { | |
2078 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2079 | directory, get rid of it. */ | |
2080 | char *cp = strchr (comp_dir, ':'); | |
2081 | ||
2082 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2083 | comp_dir = cp + 1; | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | if (objfile->ei.entry_point >= lowpc && | |
2088 | objfile->ei.entry_point < highpc) | |
2089 | { | |
627b3ba2 AC |
2090 | objfile->ei.deprecated_entry_file_lowpc = lowpc; |
2091 | objfile->ei.deprecated_entry_file_highpc = highpc; | |
c906108c SS |
2092 | } |
2093 | ||
e142c38c | 2094 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2095 | if (attr) |
2096 | { | |
e142c38c | 2097 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2098 | } |
2099 | ||
2100 | /* We assume that we're processing GCC output. */ | |
2101 | processing_gcc_compilation = 2; | |
2102 | #if 0 | |
c5aa993b JM |
2103 | /* FIXME:Do something here. */ |
2104 | if (dip->at_producer != NULL) | |
c906108c SS |
2105 | { |
2106 | handle_producer (dip->at_producer); | |
2107 | } | |
2108 | #endif | |
2109 | ||
2110 | /* The compilation unit may be in a different language or objfile, | |
2111 | zero out all remembered fundamental types. */ | |
e142c38c | 2112 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2113 | |
2114 | start_symtab (name, comp_dir, lowpc); | |
2115 | record_debugformat ("DWARF 2"); | |
2116 | ||
e142c38c | 2117 | initialize_cu_func_list (cu); |
c906108c SS |
2118 | |
2119 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2120 | if (die->child != NULL) |
c906108c | 2121 | { |
639d11d3 | 2122 | child_die = die->child; |
c906108c SS |
2123 | while (child_die && child_die->tag) |
2124 | { | |
e7c27a73 | 2125 | process_die (child_die, cu); |
c906108c SS |
2126 | child_die = sibling_die (child_die); |
2127 | } | |
2128 | } | |
5fb290d7 DJ |
2129 | |
2130 | /* Decode line number information if present. */ | |
e142c38c | 2131 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2132 | if (attr) |
2133 | { | |
debd256d | 2134 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2135 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2136 | if (line_header) |
2137 | { | |
2138 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2139 | (void *) line_header); | |
e7c27a73 | 2140 | dwarf_decode_lines (line_header, comp_dir, abfd, cu); |
debd256d | 2141 | } |
5fb290d7 | 2142 | } |
debd256d | 2143 | |
2e276125 JB |
2144 | /* Decode macro information, if present. Dwarf 2 macro information |
2145 | refers to information in the line number info statement program | |
2146 | header, so we can only read it if we've read the header | |
2147 | successfully. */ | |
e142c38c | 2148 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2149 | if (attr && line_header) |
2e276125 JB |
2150 | { |
2151 | unsigned int macro_offset = DW_UNSND (attr); | |
2152 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2153 | comp_dir, abfd, cu); |
2e276125 | 2154 | } |
debd256d | 2155 | do_cleanups (back_to); |
5fb290d7 DJ |
2156 | } |
2157 | ||
2158 | static void | |
e142c38c DJ |
2159 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2160 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2161 | { |
2162 | struct function_range *thisfn; | |
2163 | ||
2164 | thisfn = (struct function_range *) | |
2165 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct function_range)); | |
2166 | thisfn->name = name; | |
2167 | thisfn->lowpc = lowpc; | |
2168 | thisfn->highpc = highpc; | |
2169 | thisfn->seen_line = 0; | |
2170 | thisfn->next = NULL; | |
2171 | ||
e142c38c DJ |
2172 | if (cu->last_fn == NULL) |
2173 | cu->first_fn = thisfn; | |
5fb290d7 | 2174 | else |
e142c38c | 2175 | cu->last_fn->next = thisfn; |
5fb290d7 | 2176 | |
e142c38c | 2177 | cu->last_fn = thisfn; |
c906108c SS |
2178 | } |
2179 | ||
2180 | static void | |
e7c27a73 | 2181 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2182 | { |
e7c27a73 | 2183 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2184 | struct context_stack *new; |
c906108c SS |
2185 | CORE_ADDR lowpc; |
2186 | CORE_ADDR highpc; | |
2187 | struct die_info *child_die; | |
2188 | struct attribute *attr; | |
2189 | char *name; | |
fdde2d81 DC |
2190 | const char *previous_prefix = processing_current_prefix; |
2191 | struct cleanup *back_to = NULL; | |
e142c38c | 2192 | CORE_ADDR baseaddr; |
c906108c | 2193 | |
e142c38c DJ |
2194 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2195 | ||
2196 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2197 | |
2198 | /* Ignore functions with missing or empty names and functions with | |
2199 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2200 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2201 | return; |
2202 | ||
086ed43d | 2203 | if (cu->language == language_cplus) |
fdde2d81 | 2204 | { |
086ed43d | 2205 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2206 | |
2a35147e JB |
2207 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2208 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2209 | given the code | |
2210 | ||
2211 | namespace N { | |
2212 | void foo() { | |
2213 | // Definition of N::foo. | |
2214 | } | |
2215 | } | |
2216 | ||
2217 | then we'll have a tree of DIEs like this: | |
2218 | ||
2219 | 1: DW_TAG_compile_unit | |
2220 | 2: DW_TAG_namespace // N | |
2221 | 3: DW_TAG_subprogram // declaration of N::foo | |
2222 | 4: DW_TAG_subprogram // definition of N::foo | |
2223 | DW_AT_specification // refers to die #3 | |
2224 | ||
2225 | Thus, when processing die #4, we have to pretend that we're | |
2226 | in the context of its DW_AT_specification, namely the contex | |
2227 | of die #3. */ | |
fdde2d81 DC |
2228 | |
2229 | if (spec_die != NULL) | |
2230 | { | |
e142c38c | 2231 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2232 | processing_current_prefix = specification_prefix; |
2233 | back_to = make_cleanup (xfree, specification_prefix); | |
2234 | } | |
2235 | } | |
2236 | ||
c906108c SS |
2237 | lowpc += baseaddr; |
2238 | highpc += baseaddr; | |
2239 | ||
5fb290d7 | 2240 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2241 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2242 | |
c906108c SS |
2243 | if (objfile->ei.entry_point >= lowpc && |
2244 | objfile->ei.entry_point < highpc) | |
2245 | { | |
2246 | objfile->ei.entry_func_lowpc = lowpc; | |
2247 | objfile->ei.entry_func_highpc = highpc; | |
2248 | } | |
2249 | ||
c906108c | 2250 | new = push_context (0, lowpc); |
e7c27a73 | 2251 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2252 | |
4cecd739 DJ |
2253 | /* If there is a location expression for DW_AT_frame_base, record |
2254 | it. */ | |
e142c38c | 2255 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2256 | if (attr) |
c034e007 AC |
2257 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2258 | expression is being recorded directly in the function's symbol | |
2259 | and not in a separate frame-base object. I guess this hack is | |
2260 | to avoid adding some sort of frame-base adjunct/annex to the | |
2261 | function's symbol :-(. The problem with doing this is that it | |
2262 | results in a function symbol with a location expression that | |
2263 | has nothing to do with the location of the function, ouch! The | |
2264 | relationship should be: a function's symbol has-a frame base; a | |
2265 | frame-base has-a location expression. */ | |
e7c27a73 | 2266 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2267 | |
e142c38c | 2268 | cu->list_in_scope = &local_symbols; |
c906108c | 2269 | |
639d11d3 | 2270 | if (die->child != NULL) |
c906108c | 2271 | { |
639d11d3 | 2272 | child_die = die->child; |
c906108c SS |
2273 | while (child_die && child_die->tag) |
2274 | { | |
e7c27a73 | 2275 | process_die (child_die, cu); |
c906108c SS |
2276 | child_die = sibling_die (child_die); |
2277 | } | |
2278 | } | |
2279 | ||
2280 | new = pop_context (); | |
2281 | /* Make a block for the local symbols within. */ | |
2282 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2283 | lowpc, highpc, objfile); | |
208d8187 JB |
2284 | |
2285 | /* In C++, we can have functions nested inside functions (e.g., when | |
2286 | a function declares a class that has methods). This means that | |
2287 | when we finish processing a function scope, we may need to go | |
2288 | back to building a containing block's symbol lists. */ | |
2289 | local_symbols = new->locals; | |
2290 | param_symbols = new->params; | |
2291 | ||
921e78cf JB |
2292 | /* If we've finished processing a top-level function, subsequent |
2293 | symbols go in the file symbol list. */ | |
2294 | if (outermost_context_p ()) | |
e142c38c | 2295 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2296 | |
2297 | processing_current_prefix = previous_prefix; | |
2298 | if (back_to != NULL) | |
2299 | do_cleanups (back_to); | |
c906108c SS |
2300 | } |
2301 | ||
2302 | /* Process all the DIES contained within a lexical block scope. Start | |
2303 | a new scope, process the dies, and then close the scope. */ | |
2304 | ||
2305 | static void | |
e7c27a73 | 2306 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2307 | { |
e7c27a73 | 2308 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2309 | struct context_stack *new; |
c906108c SS |
2310 | CORE_ADDR lowpc, highpc; |
2311 | struct die_info *child_die; | |
e142c38c DJ |
2312 | CORE_ADDR baseaddr; |
2313 | ||
2314 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2315 | |
2316 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
2317 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
2318 | as multiple lexical blocks? Handling children in a sane way would | |
2319 | be nasty. Might be easier to properly extend generic blocks to | |
2320 | describe ranges. */ | |
e7c27a73 | 2321 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2322 | return; |
2323 | lowpc += baseaddr; | |
2324 | highpc += baseaddr; | |
2325 | ||
2326 | push_context (0, lowpc); | |
639d11d3 | 2327 | if (die->child != NULL) |
c906108c | 2328 | { |
639d11d3 | 2329 | child_die = die->child; |
c906108c SS |
2330 | while (child_die && child_die->tag) |
2331 | { | |
e7c27a73 | 2332 | process_die (child_die, cu); |
c906108c SS |
2333 | child_die = sibling_die (child_die); |
2334 | } | |
2335 | } | |
2336 | new = pop_context (); | |
2337 | ||
2338 | if (local_symbols != NULL) | |
2339 | { | |
2340 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
2341 | highpc, objfile); | |
2342 | } | |
2343 | local_symbols = new->locals; | |
2344 | } | |
2345 | ||
af34e669 DJ |
2346 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
2347 | are present and valid, otherwise, return 0. Return -1 if the range is | |
2348 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 2349 | static int |
af34e669 | 2350 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 2351 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 2352 | { |
e7c27a73 DJ |
2353 | struct objfile *objfile = cu->objfile; |
2354 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 2355 | struct attribute *attr; |
af34e669 DJ |
2356 | bfd *obfd = objfile->obfd; |
2357 | CORE_ADDR low = 0; | |
2358 | CORE_ADDR high = 0; | |
2359 | int ret = 0; | |
c906108c | 2360 | |
e142c38c | 2361 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 2362 | if (attr) |
af34e669 DJ |
2363 | { |
2364 | high = DW_ADDR (attr); | |
e142c38c | 2365 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
2366 | if (attr) |
2367 | low = DW_ADDR (attr); | |
2368 | else | |
2369 | /* Found high w/o low attribute. */ | |
2370 | return 0; | |
2371 | ||
2372 | /* Found consecutive range of addresses. */ | |
2373 | ret = 1; | |
2374 | } | |
c906108c | 2375 | else |
af34e669 | 2376 | { |
e142c38c | 2377 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
2378 | if (attr != NULL) |
2379 | { | |
2380 | unsigned int addr_size = cu_header->addr_size; | |
2381 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
2382 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 2383 | .debug_ranges section. */ |
af34e669 DJ |
2384 | unsigned int offset = DW_UNSND (attr); |
2385 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
2386 | CORE_ADDR base; |
2387 | int found_base; | |
af34e669 | 2388 | int dummy; |
af34e669 DJ |
2389 | char *buffer; |
2390 | CORE_ADDR marker; | |
2391 | int low_set; | |
2392 | ||
0d53c4c4 DJ |
2393 | found_base = cu_header->base_known; |
2394 | base = cu_header->base_address; | |
a604369a KB |
2395 | |
2396 | if (offset >= dwarf_ranges_size) | |
2397 | { | |
2398 | complaint (&symfile_complaints, | |
2399 | "Offset %d out of bounds for DW_AT_ranges attribute", | |
2400 | offset); | |
2401 | return 0; | |
2402 | } | |
af34e669 DJ |
2403 | buffer = dwarf_ranges_buffer + offset; |
2404 | ||
af34e669 | 2405 | /* Read in the largest possible address. */ |
e7c27a73 | 2406 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2407 | if ((marker & mask) == mask) |
2408 | { | |
2409 | /* If we found the largest possible address, then | |
2410 | read the base address. */ | |
e7c27a73 | 2411 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2412 | buffer += 2 * addr_size; |
2413 | offset += 2 * addr_size; | |
2414 | found_base = 1; | |
2415 | } | |
2416 | ||
2417 | low_set = 0; | |
2418 | ||
2419 | while (1) | |
2420 | { | |
2421 | CORE_ADDR range_beginning, range_end; | |
2422 | ||
e7c27a73 | 2423 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 2424 | buffer += addr_size; |
e7c27a73 | 2425 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2426 | buffer += addr_size; |
2427 | offset += 2 * addr_size; | |
2428 | ||
2429 | /* An end of list marker is a pair of zero addresses. */ | |
2430 | if (range_beginning == 0 && range_end == 0) | |
2431 | /* Found the end of list entry. */ | |
2432 | break; | |
2433 | ||
2434 | /* Each base address selection entry is a pair of 2 values. | |
2435 | The first is the largest possible address, the second is | |
2436 | the base address. Check for a base address here. */ | |
2437 | if ((range_beginning & mask) == mask) | |
2438 | { | |
2439 | /* If we found the largest possible address, then | |
2440 | read the base address. */ | |
e7c27a73 | 2441 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2442 | found_base = 1; |
2443 | continue; | |
2444 | } | |
2445 | ||
2446 | if (!found_base) | |
2447 | { | |
2448 | /* We have no valid base address for the ranges | |
2449 | data. */ | |
2450 | complaint (&symfile_complaints, | |
2451 | "Invalid .debug_ranges data (no base address)"); | |
2452 | return 0; | |
2453 | } | |
2454 | ||
8f05cde5 DJ |
2455 | range_beginning += base; |
2456 | range_end += base; | |
2457 | ||
af34e669 DJ |
2458 | /* FIXME: This is recording everything as a low-high |
2459 | segment of consecutive addresses. We should have a | |
2460 | data structure for discontiguous block ranges | |
2461 | instead. */ | |
2462 | if (! low_set) | |
2463 | { | |
2464 | low = range_beginning; | |
2465 | high = range_end; | |
2466 | low_set = 1; | |
2467 | } | |
2468 | else | |
2469 | { | |
2470 | if (range_beginning < low) | |
2471 | low = range_beginning; | |
2472 | if (range_end > high) | |
2473 | high = range_end; | |
2474 | } | |
2475 | } | |
2476 | ||
2477 | if (! low_set) | |
2478 | /* If the first entry is an end-of-list marker, the range | |
2479 | describes an empty scope, i.e. no instructions. */ | |
2480 | return 0; | |
2481 | ||
2482 | ret = -1; | |
2483 | } | |
2484 | } | |
c906108c SS |
2485 | |
2486 | if (high < low) | |
2487 | return 0; | |
2488 | ||
2489 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
2490 | eliminate duplicate copies of functions and vtables and such. | |
2491 | The linker will arbitrarily choose one and discard the others. | |
2492 | The AT_*_pc values for such functions refer to local labels in | |
2493 | these sections. If the section from that file was discarded, the | |
2494 | labels are not in the output, so the relocs get a value of 0. | |
2495 | If this is a discarded function, mark the pc bounds as invalid, | |
2496 | so that GDB will ignore it. */ | |
af34e669 | 2497 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
2498 | return 0; |
2499 | ||
2500 | *lowpc = low; | |
2501 | *highpc = high; | |
af34e669 | 2502 | return ret; |
c906108c SS |
2503 | } |
2504 | ||
fae299cd DC |
2505 | /* Get the low and high pc's represented by the scope DIE, and store |
2506 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
2507 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
2508 | ||
2509 | static void | |
2510 | get_scope_pc_bounds (struct die_info *die, | |
2511 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
2512 | struct dwarf2_cu *cu) | |
2513 | { | |
2514 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
2515 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
2516 | CORE_ADDR current_low, current_high; | |
2517 | ||
2518 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
2519 | { | |
2520 | best_low = current_low; | |
2521 | best_high = current_high; | |
2522 | } | |
2523 | else | |
2524 | { | |
2525 | struct die_info *child = die->child; | |
2526 | ||
2527 | while (child && child->tag) | |
2528 | { | |
2529 | switch (child->tag) { | |
2530 | case DW_TAG_subprogram: | |
2531 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
2532 | { | |
2533 | best_low = min (best_low, current_low); | |
2534 | best_high = max (best_high, current_high); | |
2535 | } | |
2536 | break; | |
2537 | case DW_TAG_namespace: | |
2538 | /* FIXME: carlton/2004-01-16: Should we do this for | |
2539 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
2540 | that current GCC's always emit the DIEs corresponding | |
2541 | to definitions of methods of classes as children of a | |
2542 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
2543 | the DIEs giving the declarations, which could be | |
2544 | anywhere). But I don't see any reason why the | |
2545 | standards says that they have to be there. */ | |
2546 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
2547 | ||
2548 | if (current_low != ((CORE_ADDR) -1)) | |
2549 | { | |
2550 | best_low = min (best_low, current_low); | |
2551 | best_high = max (best_high, current_high); | |
2552 | } | |
2553 | break; | |
2554 | default: | |
2555 | /* Ignore. */ | |
2556 | break; | |
2557 | } | |
2558 | ||
2559 | child = sibling_die (child); | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | *lowpc = best_low; | |
2564 | *highpc = best_high; | |
2565 | } | |
2566 | ||
c906108c SS |
2567 | /* Add an aggregate field to the field list. */ |
2568 | ||
2569 | static void | |
107d2387 | 2570 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
2571 | struct dwarf2_cu *cu) |
2572 | { | |
2573 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
2574 | struct nextfield *new_field; |
2575 | struct attribute *attr; | |
2576 | struct field *fp; | |
2577 | char *fieldname = ""; | |
2578 | ||
2579 | /* Allocate a new field list entry and link it in. */ | |
2580 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2581 | make_cleanup (xfree, new_field); |
c906108c SS |
2582 | memset (new_field, 0, sizeof (struct nextfield)); |
2583 | new_field->next = fip->fields; | |
2584 | fip->fields = new_field; | |
2585 | fip->nfields++; | |
2586 | ||
2587 | /* Handle accessibility and virtuality of field. | |
2588 | The default accessibility for members is public, the default | |
2589 | accessibility for inheritance is private. */ | |
2590 | if (die->tag != DW_TAG_inheritance) | |
2591 | new_field->accessibility = DW_ACCESS_public; | |
2592 | else | |
2593 | new_field->accessibility = DW_ACCESS_private; | |
2594 | new_field->virtuality = DW_VIRTUALITY_none; | |
2595 | ||
e142c38c | 2596 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2597 | if (attr) |
2598 | new_field->accessibility = DW_UNSND (attr); | |
2599 | if (new_field->accessibility != DW_ACCESS_public) | |
2600 | fip->non_public_fields = 1; | |
e142c38c | 2601 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
2602 | if (attr) |
2603 | new_field->virtuality = DW_UNSND (attr); | |
2604 | ||
2605 | fp = &new_field->field; | |
a9a9bd0f | 2606 | |
e142c38c | 2607 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 2608 | { |
a9a9bd0f DC |
2609 | /* Data member other than a C++ static data member. */ |
2610 | ||
c906108c | 2611 | /* Get type of field. */ |
e7c27a73 | 2612 | fp->type = die_type (die, cu); |
c906108c | 2613 | |
01ad7f36 DJ |
2614 | FIELD_STATIC_KIND (*fp) = 0; |
2615 | ||
c906108c | 2616 | /* Get bit size of field (zero if none). */ |
e142c38c | 2617 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
2618 | if (attr) |
2619 | { | |
2620 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
2621 | } | |
2622 | else | |
2623 | { | |
2624 | FIELD_BITSIZE (*fp) = 0; | |
2625 | } | |
2626 | ||
2627 | /* Get bit offset of field. */ | |
e142c38c | 2628 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
2629 | if (attr) |
2630 | { | |
2631 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 2632 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
2633 | } |
2634 | else | |
2635 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 2636 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
2637 | if (attr) |
2638 | { | |
2639 | if (BITS_BIG_ENDIAN) | |
2640 | { | |
2641 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
2642 | additional bit offset from the MSB of the containing |
2643 | anonymous object to the MSB of the field. We don't | |
2644 | have to do anything special since we don't need to | |
2645 | know the size of the anonymous object. */ | |
c906108c SS |
2646 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
2647 | } | |
2648 | else | |
2649 | { | |
2650 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
2651 | MSB of the anonymous object, subtract off the number of |
2652 | bits from the MSB of the field to the MSB of the | |
2653 | object, and then subtract off the number of bits of | |
2654 | the field itself. The result is the bit offset of | |
2655 | the LSB of the field. */ | |
c906108c SS |
2656 | int anonymous_size; |
2657 | int bit_offset = DW_UNSND (attr); | |
2658 | ||
e142c38c | 2659 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
2660 | if (attr) |
2661 | { | |
2662 | /* The size of the anonymous object containing | |
2663 | the bit field is explicit, so use the | |
2664 | indicated size (in bytes). */ | |
2665 | anonymous_size = DW_UNSND (attr); | |
2666 | } | |
2667 | else | |
2668 | { | |
2669 | /* The size of the anonymous object containing | |
2670 | the bit field must be inferred from the type | |
2671 | attribute of the data member containing the | |
2672 | bit field. */ | |
2673 | anonymous_size = TYPE_LENGTH (fp->type); | |
2674 | } | |
2675 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
2676 | - bit_offset - FIELD_BITSIZE (*fp); | |
2677 | } | |
2678 | } | |
2679 | ||
2680 | /* Get name of field. */ | |
e142c38c | 2681 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2682 | if (attr && DW_STRING (attr)) |
2683 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
2684 | |
2685 | /* The name is already allocated along with this objfile, so we don't | |
2686 | need to duplicate it for the type. */ | |
2687 | fp->name = fieldname; | |
c906108c SS |
2688 | |
2689 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 2690 | pointer or virtual base class pointer) to private. */ |
e142c38c | 2691 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
2692 | { |
2693 | new_field->accessibility = DW_ACCESS_private; | |
2694 | fip->non_public_fields = 1; | |
2695 | } | |
2696 | } | |
a9a9bd0f | 2697 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 2698 | { |
a9a9bd0f DC |
2699 | /* C++ static member. */ |
2700 | ||
2701 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
2702 | is a declaration, but all versions of G++ as of this writing | |
2703 | (so through at least 3.2.1) incorrectly generate | |
2704 | DW_TAG_variable tags. */ | |
2705 | ||
c906108c | 2706 | char *physname; |
c906108c | 2707 | |
a9a9bd0f | 2708 | /* Get name of field. */ |
e142c38c | 2709 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2710 | if (attr && DW_STRING (attr)) |
2711 | fieldname = DW_STRING (attr); | |
2712 | else | |
c906108c SS |
2713 | return; |
2714 | ||
2df3850c | 2715 | /* Get physical name. */ |
e142c38c | 2716 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 2717 | |
d8151005 DJ |
2718 | /* The name is already allocated along with this objfile, so we don't |
2719 | need to duplicate it for the type. */ | |
2720 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 2721 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 2722 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
2723 | } |
2724 | else if (die->tag == DW_TAG_inheritance) | |
2725 | { | |
2726 | /* C++ base class field. */ | |
e142c38c | 2727 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 2728 | if (attr) |
e7c27a73 | 2729 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 2730 | * bits_per_byte); |
c906108c | 2731 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 2732 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 2733 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
2734 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
2735 | fip->nbaseclasses++; | |
2736 | } | |
2737 | } | |
2738 | ||
2739 | /* Create the vector of fields, and attach it to the type. */ | |
2740 | ||
2741 | static void | |
fba45db2 | 2742 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 2743 | struct dwarf2_cu *cu) |
c906108c SS |
2744 | { |
2745 | int nfields = fip->nfields; | |
2746 | ||
2747 | /* Record the field count, allocate space for the array of fields, | |
2748 | and create blank accessibility bitfields if necessary. */ | |
2749 | TYPE_NFIELDS (type) = nfields; | |
2750 | TYPE_FIELDS (type) = (struct field *) | |
2751 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2752 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
2753 | ||
2754 | if (fip->non_public_fields) | |
2755 | { | |
2756 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2757 | ||
2758 | TYPE_FIELD_PRIVATE_BITS (type) = | |
2759 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2760 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
2761 | ||
2762 | TYPE_FIELD_PROTECTED_BITS (type) = | |
2763 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2764 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
2765 | ||
2766 | TYPE_FIELD_IGNORE_BITS (type) = | |
2767 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2768 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
2769 | } | |
2770 | ||
2771 | /* If the type has baseclasses, allocate and clear a bit vector for | |
2772 | TYPE_FIELD_VIRTUAL_BITS. */ | |
2773 | if (fip->nbaseclasses) | |
2774 | { | |
2775 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
2776 | char *pointer; | |
2777 | ||
2778 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2779 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
2780 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
2781 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); | |
2782 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
2783 | } | |
2784 | ||
2785 | /* Copy the saved-up fields into the field vector. Start from the head | |
2786 | of the list, adding to the tail of the field array, so that they end | |
2787 | up in the same order in the array in which they were added to the list. */ | |
2788 | while (nfields-- > 0) | |
2789 | { | |
2790 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
2791 | switch (fip->fields->accessibility) | |
2792 | { | |
c5aa993b JM |
2793 | case DW_ACCESS_private: |
2794 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
2795 | break; | |
c906108c | 2796 | |
c5aa993b JM |
2797 | case DW_ACCESS_protected: |
2798 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
2799 | break; | |
c906108c | 2800 | |
c5aa993b JM |
2801 | case DW_ACCESS_public: |
2802 | break; | |
c906108c | 2803 | |
c5aa993b JM |
2804 | default: |
2805 | /* Unknown accessibility. Complain and treat it as public. */ | |
2806 | { | |
4d3c2250 KB |
2807 | complaint (&symfile_complaints, "unsupported accessibility %d", |
2808 | fip->fields->accessibility); | |
c5aa993b JM |
2809 | } |
2810 | break; | |
c906108c SS |
2811 | } |
2812 | if (nfields < fip->nbaseclasses) | |
2813 | { | |
2814 | switch (fip->fields->virtuality) | |
2815 | { | |
c5aa993b JM |
2816 | case DW_VIRTUALITY_virtual: |
2817 | case DW_VIRTUALITY_pure_virtual: | |
2818 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
2819 | break; | |
c906108c SS |
2820 | } |
2821 | } | |
2822 | fip->fields = fip->fields->next; | |
2823 | } | |
2824 | } | |
2825 | ||
c906108c SS |
2826 | /* Add a member function to the proper fieldlist. */ |
2827 | ||
2828 | static void | |
107d2387 | 2829 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 2830 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 2831 | { |
e7c27a73 | 2832 | struct objfile *objfile = cu->objfile; |
c906108c SS |
2833 | struct attribute *attr; |
2834 | struct fnfieldlist *flp; | |
2835 | int i; | |
2836 | struct fn_field *fnp; | |
2837 | char *fieldname; | |
2838 | char *physname; | |
2839 | struct nextfnfield *new_fnfield; | |
2840 | ||
2df3850c | 2841 | /* Get name of member function. */ |
e142c38c | 2842 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2843 | if (attr && DW_STRING (attr)) |
2844 | fieldname = DW_STRING (attr); | |
c906108c | 2845 | else |
2df3850c | 2846 | return; |
c906108c | 2847 | |
2df3850c | 2848 | /* Get the mangled name. */ |
e142c38c | 2849 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
2850 | |
2851 | /* Look up member function name in fieldlist. */ | |
2852 | for (i = 0; i < fip->nfnfields; i++) | |
2853 | { | |
27bfe10e | 2854 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
2855 | break; |
2856 | } | |
2857 | ||
2858 | /* Create new list element if necessary. */ | |
2859 | if (i < fip->nfnfields) | |
2860 | flp = &fip->fnfieldlists[i]; | |
2861 | else | |
2862 | { | |
2863 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
2864 | { | |
2865 | fip->fnfieldlists = (struct fnfieldlist *) | |
2866 | xrealloc (fip->fnfieldlists, | |
2867 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 2868 | * sizeof (struct fnfieldlist)); |
c906108c | 2869 | if (fip->nfnfields == 0) |
c13c43fd | 2870 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
2871 | } |
2872 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
2873 | flp->name = fieldname; | |
2874 | flp->length = 0; | |
2875 | flp->head = NULL; | |
2876 | fip->nfnfields++; | |
2877 | } | |
2878 | ||
2879 | /* Create a new member function field and chain it to the field list | |
2880 | entry. */ | |
2881 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 2882 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
2883 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
2884 | new_fnfield->next = flp->head; | |
2885 | flp->head = new_fnfield; | |
2886 | flp->length++; | |
2887 | ||
2888 | /* Fill in the member function field info. */ | |
2889 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
2890 | /* The name is already allocated along with this objfile, so we don't |
2891 | need to duplicate it for the type. */ | |
2892 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
2893 | fnp->type = alloc_type (objfile); |
2894 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
2895 | { | |
c906108c | 2896 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 2897 | |
e26fb1d7 DC |
2898 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
2899 | of the method itself (TYPE_CODE_METHOD). */ | |
2900 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
2901 | TYPE_TARGET_TYPE (die->type), |
2902 | TYPE_FIELDS (die->type), | |
2903 | TYPE_NFIELDS (die->type), | |
2904 | TYPE_VARARGS (die->type)); | |
c906108c SS |
2905 | |
2906 | /* Handle static member functions. | |
c5aa993b JM |
2907 | Dwarf2 has no clean way to discern C++ static and non-static |
2908 | member functions. G++ helps GDB by marking the first | |
2909 | parameter for non-static member functions (which is the | |
2910 | this pointer) as artificial. We obtain this information | |
2911 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
2912 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
2913 | fnp->voffset = VOFFSET_STATIC; | |
2914 | } | |
2915 | else | |
4d3c2250 KB |
2916 | complaint (&symfile_complaints, "member function type missing for '%s'", |
2917 | physname); | |
c906108c SS |
2918 | |
2919 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 2920 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 2921 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
2922 | |
2923 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
2924 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
2925 | ||
2926 | /* Get accessibility. */ | |
e142c38c | 2927 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2928 | if (attr) |
2929 | { | |
2930 | switch (DW_UNSND (attr)) | |
2931 | { | |
c5aa993b JM |
2932 | case DW_ACCESS_private: |
2933 | fnp->is_private = 1; | |
2934 | break; | |
2935 | case DW_ACCESS_protected: | |
2936 | fnp->is_protected = 1; | |
2937 | break; | |
c906108c SS |
2938 | } |
2939 | } | |
2940 | ||
b02dede2 | 2941 | /* Check for artificial methods. */ |
e142c38c | 2942 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
2943 | if (attr && DW_UNSND (attr) != 0) |
2944 | fnp->is_artificial = 1; | |
2945 | ||
c906108c | 2946 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 2947 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 2948 | if (attr) |
8e19ed76 PS |
2949 | { |
2950 | /* Support the .debug_loc offsets */ | |
2951 | if (attr_form_is_block (attr)) | |
2952 | { | |
e7c27a73 | 2953 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
2954 | } |
2955 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
2956 | { | |
4d3c2250 | 2957 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
2958 | } |
2959 | else | |
2960 | { | |
4d3c2250 KB |
2961 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
2962 | fieldname); | |
8e19ed76 PS |
2963 | } |
2964 | } | |
c906108c SS |
2965 | } |
2966 | ||
2967 | /* Create the vector of member function fields, and attach it to the type. */ | |
2968 | ||
2969 | static void | |
fba45db2 | 2970 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 2971 | struct dwarf2_cu *cu) |
c906108c SS |
2972 | { |
2973 | struct fnfieldlist *flp; | |
2974 | int total_length = 0; | |
2975 | int i; | |
2976 | ||
2977 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2978 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2979 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
2980 | ||
2981 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
2982 | { | |
2983 | struct nextfnfield *nfp = flp->head; | |
2984 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
2985 | int k; | |
2986 | ||
2987 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
2988 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
2989 | fn_flp->fn_fields = (struct fn_field *) | |
2990 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
2991 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 2992 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
2993 | |
2994 | total_length += flp->length; | |
2995 | } | |
2996 | ||
2997 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
2998 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2999 | } | |
3000 | ||
3001 | /* Called when we find the DIE that starts a structure or union scope | |
3002 | (definition) to process all dies that define the members of the | |
3003 | structure or union. | |
3004 | ||
3005 | NOTE: we need to call struct_type regardless of whether or not the | |
3006 | DIE has an at_name attribute, since it might be an anonymous | |
3007 | structure or union. This gets the type entered into our set of | |
3008 | user defined types. | |
3009 | ||
3010 | However, if the structure is incomplete (an opaque struct/union) | |
3011 | then suppress creating a symbol table entry for it since gdb only | |
3012 | wants to find the one with the complete definition. Note that if | |
3013 | it is complete, we just call new_symbol, which does it's own | |
3014 | checking about whether the struct/union is anonymous or not (and | |
3015 | suppresses creating a symbol table entry itself). */ | |
3016 | ||
3017 | static void | |
e7c27a73 | 3018 | read_structure_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3019 | { |
e7c27a73 | 3020 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3021 | struct type *type; |
3022 | struct attribute *attr; | |
d8151005 | 3023 | char *name = NULL; |
63d06c5c DC |
3024 | const char *previous_prefix = processing_current_prefix; |
3025 | struct cleanup *back_to = NULL; | |
3026 | /* This says whether or not we want to try to update the structure's | |
3027 | name to include enclosing namespace/class information, if | |
3028 | any. */ | |
3029 | int need_to_update_name = 0; | |
c906108c SS |
3030 | |
3031 | type = alloc_type (objfile); | |
3032 | ||
3033 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3034 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3035 | if (attr && DW_STRING (attr)) |
3036 | { | |
63d06c5c DC |
3037 | name = DW_STRING (attr); |
3038 | ||
e142c38c | 3039 | if (cu->language == language_cplus) |
63d06c5c | 3040 | { |
e142c38c | 3041 | struct die_info *spec_die = die_specification (die, cu); |
63d06c5c DC |
3042 | |
3043 | if (spec_die != NULL) | |
3044 | { | |
e142c38c | 3045 | char *specification_prefix = determine_prefix (spec_die, cu); |
63d06c5c DC |
3046 | processing_current_prefix = specification_prefix; |
3047 | back_to = make_cleanup (xfree, specification_prefix); | |
3048 | } | |
3049 | } | |
3050 | ||
3051 | if (processing_has_namespace_info) | |
3052 | { | |
3053 | /* FIXME: carlton/2003-11-10: This variable exists only for | |
3054 | const-correctness reasons. When I tried to change | |
3055 | TYPE_TAG_NAME to be a const char *, I ran into a cascade | |
3056 | of changes which would have forced decode_line_1 to take | |
3057 | a const char **. */ | |
b99607ea | 3058 | char *new_prefix = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3059 | processing_current_prefix, |
3060 | processing_current_prefix[0] == '\0' | |
3061 | ? "" : "::", | |
3062 | name); | |
3063 | TYPE_TAG_NAME (type) = new_prefix; | |
3064 | processing_current_prefix = new_prefix; | |
3065 | } | |
3066 | else | |
3067 | { | |
d8151005 DJ |
3068 | /* The name is already allocated along with this objfile, so |
3069 | we don't need to duplicate it for the type. */ | |
3070 | TYPE_TAG_NAME (type) = name; | |
e142c38c | 3071 | need_to_update_name = (cu->language == language_cplus); |
63d06c5c | 3072 | } |
c906108c SS |
3073 | } |
3074 | ||
3075 | if (die->tag == DW_TAG_structure_type) | |
3076 | { | |
3077 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3078 | } | |
3079 | else if (die->tag == DW_TAG_union_type) | |
3080 | { | |
3081 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3086 | in gdbtypes.h. */ |
c906108c SS |
3087 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3088 | } | |
3089 | ||
e142c38c | 3090 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3091 | if (attr) |
3092 | { | |
3093 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3094 | } | |
3095 | else | |
3096 | { | |
3097 | TYPE_LENGTH (type) = 0; | |
3098 | } | |
3099 | ||
3100 | /* We need to add the type field to the die immediately so we don't | |
3101 | infinitely recurse when dealing with pointers to the structure | |
3102 | type within the structure itself. */ | |
3103 | die->type = type; | |
3104 | ||
e142c38c | 3105 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3106 | { |
3107 | struct field_info fi; | |
3108 | struct die_info *child_die; | |
3109 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3110 | ||
3111 | memset (&fi, 0, sizeof (struct field_info)); | |
3112 | ||
639d11d3 | 3113 | child_die = die->child; |
c906108c SS |
3114 | |
3115 | while (child_die && child_die->tag) | |
3116 | { | |
a9a9bd0f DC |
3117 | if (child_die->tag == DW_TAG_member |
3118 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3119 | { |
a9a9bd0f DC |
3120 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3121 | should be a DW_TAG_member that is a declaration, but | |
3122 | all versions of G++ as of this writing (so through at | |
3123 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3124 | tags for them instead. */ | |
e7c27a73 | 3125 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3126 | } |
8713b1b1 | 3127 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3128 | { |
3129 | /* C++ member function. */ | |
e7c27a73 DJ |
3130 | process_die (child_die, cu); |
3131 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
63d06c5c DC |
3132 | if (need_to_update_name) |
3133 | { | |
3134 | /* The demangled names of member functions contain | |
3135 | information about enclosing namespaces/classes, | |
3136 | if any. */ | |
3137 | ||
3138 | /* FIXME: carlton/2003-11-10: The excessive | |
3139 | demangling here is a bit wasteful, as is the | |
3140 | memory usage for names. */ | |
3141 | ||
3142 | /* NOTE: carlton/2003-11-10: As commented in | |
3143 | add_partial_structure, the demangler sometimes | |
3144 | prints the type info in a different form from the | |
3145 | debug info. We could solve this by using the | |
3146 | demangled name to get the prefix; if doing so, | |
3147 | however, we'd need to be careful when reading a | |
3148 | class that's nested inside a template class. | |
3149 | That would also cause problems when trying to | |
3150 | determine RTTI information, since we use the | |
3151 | demangler to determine the appropriate class | |
3152 | name. */ | |
3153 | char *actual_class_name | |
3154 | = class_name_from_physname (dwarf2_linkage_name | |
e142c38c | 3155 | (child_die, cu)); |
63d06c5c DC |
3156 | if (actual_class_name != NULL |
3157 | && strcmp (actual_class_name, name) != 0) | |
3158 | { | |
3159 | TYPE_TAG_NAME (type) | |
3160 | = obsavestring (actual_class_name, | |
3161 | strlen (actual_class_name), | |
b99607ea | 3162 | &objfile->objfile_obstack); |
63d06c5c DC |
3163 | } |
3164 | xfree (actual_class_name); | |
3165 | need_to_update_name = 0; | |
3166 | } | |
c906108c SS |
3167 | } |
3168 | else if (child_die->tag == DW_TAG_inheritance) | |
3169 | { | |
3170 | /* C++ base class field. */ | |
e7c27a73 | 3171 | dwarf2_add_field (&fi, child_die, cu); |
c906108c SS |
3172 | } |
3173 | else | |
3174 | { | |
e7c27a73 | 3175 | process_die (child_die, cu); |
c906108c SS |
3176 | } |
3177 | child_die = sibling_die (child_die); | |
3178 | } | |
3179 | ||
3180 | /* Attach fields and member functions to the type. */ | |
3181 | if (fi.nfields) | |
e7c27a73 | 3182 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3183 | if (fi.nfnfields) |
3184 | { | |
e7c27a73 | 3185 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3186 | |
c5aa993b | 3187 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3188 | class itself) which contains the vtable pointer for the current |
3189 | class from the DW_AT_containing_type attribute. */ | |
3190 | ||
e142c38c | 3191 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3192 | { |
e7c27a73 | 3193 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3194 | |
3195 | TYPE_VPTR_BASETYPE (type) = t; | |
3196 | if (type == t) | |
3197 | { | |
c5aa993b JM |
3198 | static const char vptr_name[] = |
3199 | {'_', 'v', 'p', 't', 'r', '\0'}; | |
c906108c SS |
3200 | int i; |
3201 | ||
3202 | /* Our own class provides vtbl ptr. */ | |
3203 | for (i = TYPE_NFIELDS (t) - 1; | |
3204 | i >= TYPE_N_BASECLASSES (t); | |
3205 | --i) | |
3206 | { | |
3207 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3208 | ||
27bfe10e JB |
3209 | if ((strncmp (fieldname, vptr_name, |
3210 | strlen (vptr_name) - 1) | |
3211 | == 0) | |
c906108c SS |
3212 | && is_cplus_marker (fieldname[strlen (vptr_name)])) |
3213 | { | |
3214 | TYPE_VPTR_FIELDNO (type) = i; | |
3215 | break; | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | /* Complain if virtual function table field not found. */ | |
3220 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 KB |
3221 | complaint (&symfile_complaints, |
3222 | "virtual function table pointer not found when defining class '%s'", | |
3223 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : | |
3224 | ""); | |
c906108c SS |
3225 | } |
3226 | else | |
3227 | { | |
3228 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3229 | } | |
3230 | } | |
3231 | } | |
3232 | ||
e7c27a73 | 3233 | new_symbol (die, type, cu); |
c906108c SS |
3234 | |
3235 | do_cleanups (back_to); | |
3236 | } | |
3237 | else | |
3238 | { | |
3239 | /* No children, must be stub. */ | |
3240 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3241 | } | |
63d06c5c DC |
3242 | |
3243 | processing_current_prefix = previous_prefix; | |
3244 | if (back_to != NULL) | |
3245 | do_cleanups (back_to); | |
c906108c SS |
3246 | } |
3247 | ||
3248 | /* Given a pointer to a die which begins an enumeration, process all | |
3249 | the dies that define the members of the enumeration. | |
3250 | ||
3251 | This will be much nicer in draft 6 of the DWARF spec when our | |
3252 | members will be dies instead squished into the DW_AT_element_list | |
3253 | attribute. | |
3254 | ||
3255 | NOTE: We reverse the order of the element list. */ | |
3256 | ||
3257 | static void | |
e7c27a73 | 3258 | read_enumeration (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3259 | { |
e7c27a73 | 3260 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3261 | struct die_info *child_die; |
3262 | struct type *type; | |
3263 | struct field *fields; | |
3264 | struct attribute *attr; | |
3265 | struct symbol *sym; | |
3266 | int num_fields; | |
3267 | int unsigned_enum = 1; | |
3268 | ||
3269 | type = alloc_type (objfile); | |
3270 | ||
3271 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3272 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3273 | if (attr && DW_STRING (attr)) |
3274 | { | |
d8151005 | 3275 | char *name = DW_STRING (attr); |
63d06c5c DC |
3276 | |
3277 | if (processing_has_namespace_info) | |
3278 | { | |
b99607ea | 3279 | TYPE_TAG_NAME (type) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3280 | processing_current_prefix, |
3281 | processing_current_prefix[0] == '\0' | |
3282 | ? "" : "::", | |
3283 | name); | |
3284 | } | |
3285 | else | |
3286 | { | |
d8151005 DJ |
3287 | /* The name is already allocated along with this objfile, so |
3288 | we don't need to duplicate it for the type. */ | |
3289 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 3290 | } |
c906108c SS |
3291 | } |
3292 | ||
e142c38c | 3293 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3294 | if (attr) |
3295 | { | |
3296 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | TYPE_LENGTH (type) = 0; | |
3301 | } | |
3302 | ||
3303 | num_fields = 0; | |
3304 | fields = NULL; | |
639d11d3 | 3305 | if (die->child != NULL) |
c906108c | 3306 | { |
639d11d3 | 3307 | child_die = die->child; |
c906108c SS |
3308 | while (child_die && child_die->tag) |
3309 | { | |
3310 | if (child_die->tag != DW_TAG_enumerator) | |
3311 | { | |
e7c27a73 | 3312 | process_die (child_die, cu); |
c906108c SS |
3313 | } |
3314 | else | |
3315 | { | |
e142c38c | 3316 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
3317 | if (attr) |
3318 | { | |
e7c27a73 | 3319 | sym = new_symbol (child_die, type, cu); |
c906108c SS |
3320 | if (SYMBOL_VALUE (sym) < 0) |
3321 | unsigned_enum = 0; | |
3322 | ||
3323 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3324 | { | |
3325 | fields = (struct field *) | |
3326 | xrealloc (fields, | |
3327 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3328 | * sizeof (struct field)); |
c906108c SS |
3329 | } |
3330 | ||
22abf04a | 3331 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
3332 | FIELD_TYPE (fields[num_fields]) = NULL; |
3333 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
3334 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 3335 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
3336 | |
3337 | num_fields++; | |
3338 | } | |
3339 | } | |
3340 | ||
3341 | child_die = sibling_die (child_die); | |
3342 | } | |
3343 | ||
3344 | if (num_fields) | |
3345 | { | |
3346 | TYPE_NFIELDS (type) = num_fields; | |
3347 | TYPE_FIELDS (type) = (struct field *) | |
3348 | TYPE_ALLOC (type, sizeof (struct field) * num_fields); | |
3349 | memcpy (TYPE_FIELDS (type), fields, | |
3350 | sizeof (struct field) * num_fields); | |
b8c9b27d | 3351 | xfree (fields); |
c906108c SS |
3352 | } |
3353 | if (unsigned_enum) | |
3354 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
3355 | } | |
3356 | die->type = type; | |
e7c27a73 | 3357 | new_symbol (die, type, cu); |
c906108c SS |
3358 | } |
3359 | ||
3360 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
3361 | the DIE's type field. For now, this only handles one dimensional | |
3362 | arrays. */ | |
3363 | ||
3364 | static void | |
e7c27a73 | 3365 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3366 | { |
e7c27a73 | 3367 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3368 | struct die_info *child_die; |
3369 | struct type *type = NULL; | |
3370 | struct type *element_type, *range_type, *index_type; | |
3371 | struct type **range_types = NULL; | |
3372 | struct attribute *attr; | |
3373 | int ndim = 0; | |
3374 | struct cleanup *back_to; | |
3375 | ||
3376 | /* Return if we've already decoded this type. */ | |
3377 | if (die->type) | |
3378 | { | |
3379 | return; | |
3380 | } | |
3381 | ||
e7c27a73 | 3382 | element_type = die_type (die, cu); |
c906108c SS |
3383 | |
3384 | /* Irix 6.2 native cc creates array types without children for | |
3385 | arrays with unspecified length. */ | |
639d11d3 | 3386 | if (die->child == NULL) |
c906108c | 3387 | { |
e142c38c | 3388 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c SS |
3389 | range_type = create_range_type (NULL, index_type, 0, -1); |
3390 | die->type = create_array_type (NULL, element_type, range_type); | |
3391 | return; | |
3392 | } | |
3393 | ||
3394 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 3395 | child_die = die->child; |
c906108c SS |
3396 | while (child_die && child_die->tag) |
3397 | { | |
3398 | if (child_die->tag == DW_TAG_subrange_type) | |
3399 | { | |
a02abb62 | 3400 | read_subrange_type (child_die, cu); |
c906108c | 3401 | |
a02abb62 JB |
3402 | if (child_die->type != NULL) |
3403 | { | |
3404 | /* The range type was succesfully read. Save it for | |
3405 | the array type creation. */ | |
3406 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
3407 | { | |
3408 | range_types = (struct type **) | |
3409 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
3410 | * sizeof (struct type *)); | |
3411 | if (ndim == 0) | |
3412 | make_cleanup (free_current_contents, &range_types); | |
3413 | } | |
3414 | range_types[ndim++] = child_die->type; | |
3415 | } | |
c906108c SS |
3416 | } |
3417 | child_die = sibling_die (child_die); | |
3418 | } | |
3419 | ||
3420 | /* Dwarf2 dimensions are output from left to right, create the | |
3421 | necessary array types in backwards order. */ | |
3422 | type = element_type; | |
3423 | while (ndim-- > 0) | |
3424 | type = create_array_type (NULL, type, range_types[ndim]); | |
3425 | ||
f5f8a009 EZ |
3426 | /* Understand Dwarf2 support for vector types (like they occur on |
3427 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
3428 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
3429 | custom vendor extension. The main difference between a regular | |
3430 | array and the vector variant is that vectors are passed by value | |
3431 | to functions. */ | |
e142c38c | 3432 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
3433 | if (attr) |
3434 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
3435 | ||
c906108c SS |
3436 | do_cleanups (back_to); |
3437 | ||
3438 | /* Install the type in the die. */ | |
3439 | die->type = type; | |
3440 | } | |
3441 | ||
3442 | /* First cut: install each common block member as a global variable. */ | |
3443 | ||
3444 | static void | |
e7c27a73 | 3445 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3446 | { |
3447 | struct die_info *child_die; | |
3448 | struct attribute *attr; | |
3449 | struct symbol *sym; | |
3450 | CORE_ADDR base = (CORE_ADDR) 0; | |
3451 | ||
e142c38c | 3452 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
3453 | if (attr) |
3454 | { | |
8e19ed76 PS |
3455 | /* Support the .debug_loc offsets */ |
3456 | if (attr_form_is_block (attr)) | |
3457 | { | |
e7c27a73 | 3458 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
3459 | } |
3460 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3461 | { | |
4d3c2250 | 3462 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3463 | } |
3464 | else | |
3465 | { | |
4d3c2250 KB |
3466 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
3467 | "common block member"); | |
8e19ed76 | 3468 | } |
c906108c | 3469 | } |
639d11d3 | 3470 | if (die->child != NULL) |
c906108c | 3471 | { |
639d11d3 | 3472 | child_die = die->child; |
c906108c SS |
3473 | while (child_die && child_die->tag) |
3474 | { | |
e7c27a73 | 3475 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 3476 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
3477 | if (attr) |
3478 | { | |
3479 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 3480 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
3481 | add_symbol_to_list (sym, &global_symbols); |
3482 | } | |
3483 | child_die = sibling_die (child_die); | |
3484 | } | |
3485 | } | |
3486 | } | |
3487 | ||
d9fa45fe DC |
3488 | /* Read a C++ namespace. */ |
3489 | ||
d9fa45fe | 3490 | static void |
e7c27a73 | 3491 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 3492 | { |
e7c27a73 | 3493 | struct objfile *objfile = cu->objfile; |
38d518c9 | 3494 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 3495 | const char *name; |
9219021c DC |
3496 | int is_anonymous; |
3497 | struct die_info *current_die; | |
3498 | ||
e142c38c | 3499 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
3500 | |
3501 | /* Now build the name of the current namespace. */ | |
3502 | ||
38d518c9 | 3503 | if (previous_prefix[0] == '\0') |
9219021c | 3504 | { |
38d518c9 | 3505 | processing_current_prefix = name; |
9219021c DC |
3506 | } |
3507 | else | |
3508 | { | |
38d518c9 | 3509 | /* We need temp_name around because processing_current_prefix |
9219021c | 3510 | is a const char *. */ |
38d518c9 | 3511 | char *temp_name = alloca (strlen (previous_prefix) |
9219021c | 3512 | + 2 + strlen(name) + 1); |
38d518c9 | 3513 | strcpy (temp_name, previous_prefix); |
9219021c DC |
3514 | strcat (temp_name, "::"); |
3515 | strcat (temp_name, name); | |
3516 | ||
38d518c9 | 3517 | processing_current_prefix = temp_name; |
9219021c DC |
3518 | } |
3519 | ||
5c4e30ca DC |
3520 | /* Add a symbol associated to this if we haven't seen the namespace |
3521 | before. Also, add a using directive if it's an anonymous | |
3522 | namespace. */ | |
9219021c | 3523 | |
e142c38c | 3524 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
3525 | { |
3526 | struct type *type; | |
3527 | ||
3528 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
3529 | this cast will hopefully become unnecessary. */ | |
3530 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 3531 | (char *) processing_current_prefix, |
5c4e30ca DC |
3532 | objfile); |
3533 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
3534 | ||
e7c27a73 | 3535 | new_symbol (die, type, cu); |
5c4e30ca DC |
3536 | |
3537 | if (is_anonymous) | |
38d518c9 EZ |
3538 | cp_add_using_directive (processing_current_prefix, |
3539 | strlen (previous_prefix), | |
3540 | strlen (processing_current_prefix)); | |
5c4e30ca | 3541 | } |
9219021c | 3542 | |
639d11d3 | 3543 | if (die->child != NULL) |
d9fa45fe | 3544 | { |
639d11d3 | 3545 | struct die_info *child_die = die->child; |
d9fa45fe DC |
3546 | |
3547 | while (child_die && child_die->tag) | |
3548 | { | |
e7c27a73 | 3549 | process_die (child_die, cu); |
d9fa45fe DC |
3550 | child_die = sibling_die (child_die); |
3551 | } | |
3552 | } | |
9219021c | 3553 | |
38d518c9 EZ |
3554 | processing_current_prefix = previous_prefix; |
3555 | } | |
3556 | ||
3557 | /* Return the name of the namespace represented by DIE. Set | |
3558 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
3559 | namespace. */ | |
3560 | ||
3561 | static const char * | |
e142c38c | 3562 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
3563 | { |
3564 | struct die_info *current_die; | |
3565 | const char *name = NULL; | |
3566 | ||
3567 | /* Loop through the extensions until we find a name. */ | |
3568 | ||
3569 | for (current_die = die; | |
3570 | current_die != NULL; | |
e142c38c | 3571 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 3572 | { |
e142c38c | 3573 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
3574 | if (name != NULL) |
3575 | break; | |
3576 | } | |
3577 | ||
3578 | /* Is it an anonymous namespace? */ | |
3579 | ||
3580 | *is_anonymous = (name == NULL); | |
3581 | if (*is_anonymous) | |
3582 | name = "(anonymous namespace)"; | |
3583 | ||
3584 | return name; | |
d9fa45fe DC |
3585 | } |
3586 | ||
c906108c SS |
3587 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
3588 | the user defined type vector. */ | |
3589 | ||
3590 | static void | |
e7c27a73 | 3591 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3592 | { |
e7c27a73 | 3593 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 3594 | struct type *type; |
8b2dbe47 KB |
3595 | struct attribute *attr_byte_size; |
3596 | struct attribute *attr_address_class; | |
3597 | int byte_size, addr_class; | |
c906108c SS |
3598 | |
3599 | if (die->type) | |
3600 | { | |
3601 | return; | |
3602 | } | |
3603 | ||
e7c27a73 | 3604 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 3605 | |
e142c38c | 3606 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
3607 | if (attr_byte_size) |
3608 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 3609 | else |
8b2dbe47 KB |
3610 | byte_size = cu_header->addr_size; |
3611 | ||
e142c38c | 3612 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
3613 | if (attr_address_class) |
3614 | addr_class = DW_UNSND (attr_address_class); | |
3615 | else | |
3616 | addr_class = DW_ADDR_none; | |
3617 | ||
3618 | /* If the pointer size or address class is different than the | |
3619 | default, create a type variant marked as such and set the | |
3620 | length accordingly. */ | |
3621 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 3622 | { |
8b2dbe47 KB |
3623 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
3624 | { | |
3625 | int type_flags; | |
3626 | ||
3627 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
3628 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
3629 | type = make_type_with_address_space (type, type_flags); | |
3630 | } | |
3631 | else if (TYPE_LENGTH (type) != byte_size) | |
3632 | { | |
4d3c2250 | 3633 | complaint (&symfile_complaints, "invalid pointer size %d", byte_size); |
8b2dbe47 KB |
3634 | } |
3635 | else { | |
3636 | /* Should we also complain about unhandled address classes? */ | |
3637 | } | |
c906108c | 3638 | } |
8b2dbe47 KB |
3639 | |
3640 | TYPE_LENGTH (type) = byte_size; | |
c906108c SS |
3641 | die->type = type; |
3642 | } | |
3643 | ||
3644 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
3645 | the user defined type vector. */ | |
3646 | ||
3647 | static void | |
e7c27a73 | 3648 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3649 | { |
e7c27a73 | 3650 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3651 | struct type *type; |
3652 | struct type *to_type; | |
3653 | struct type *domain; | |
3654 | ||
3655 | if (die->type) | |
3656 | { | |
3657 | return; | |
3658 | } | |
3659 | ||
3660 | type = alloc_type (objfile); | |
e7c27a73 DJ |
3661 | to_type = die_type (die, cu); |
3662 | domain = die_containing_type (die, cu); | |
c906108c SS |
3663 | smash_to_member_type (type, domain, to_type); |
3664 | ||
3665 | die->type = type; | |
3666 | } | |
3667 | ||
3668 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
3669 | the user defined type vector. */ | |
3670 | ||
3671 | static void | |
e7c27a73 | 3672 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3673 | { |
e7c27a73 | 3674 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
3675 | struct type *type; |
3676 | struct attribute *attr; | |
3677 | ||
3678 | if (die->type) | |
3679 | { | |
3680 | return; | |
3681 | } | |
3682 | ||
e7c27a73 | 3683 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 3684 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3685 | if (attr) |
3686 | { | |
3687 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3688 | } | |
3689 | else | |
3690 | { | |
107d2387 | 3691 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c SS |
3692 | } |
3693 | die->type = type; | |
3694 | } | |
3695 | ||
3696 | static void | |
e7c27a73 | 3697 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3698 | { |
090c42a4 JB |
3699 | struct type *base_type; |
3700 | ||
c906108c SS |
3701 | if (die->type) |
3702 | { | |
3703 | return; | |
3704 | } | |
3705 | ||
e7c27a73 | 3706 | base_type = die_type (die, cu); |
090c42a4 | 3707 | die->type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
c906108c SS |
3708 | } |
3709 | ||
3710 | static void | |
e7c27a73 | 3711 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3712 | { |
090c42a4 JB |
3713 | struct type *base_type; |
3714 | ||
c906108c SS |
3715 | if (die->type) |
3716 | { | |
3717 | return; | |
3718 | } | |
3719 | ||
e7c27a73 | 3720 | base_type = die_type (die, cu); |
090c42a4 | 3721 | die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
c906108c SS |
3722 | } |
3723 | ||
3724 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
3725 | the user defined type vector. It isn't really a user defined type, | |
3726 | but it behaves like one, with other DIE's using an AT_user_def_type | |
3727 | attribute to reference it. */ | |
3728 | ||
3729 | static void | |
e7c27a73 | 3730 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3731 | { |
e7c27a73 | 3732 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3733 | struct type *type, *range_type, *index_type, *char_type; |
3734 | struct attribute *attr; | |
3735 | unsigned int length; | |
3736 | ||
3737 | if (die->type) | |
3738 | { | |
3739 | return; | |
3740 | } | |
3741 | ||
e142c38c | 3742 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
3743 | if (attr) |
3744 | { | |
3745 | length = DW_UNSND (attr); | |
3746 | } | |
3747 | else | |
3748 | { | |
b21b22e0 | 3749 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 3750 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
3751 | if (attr) |
3752 | { | |
3753 | length = DW_UNSND (attr); | |
3754 | } | |
3755 | else | |
3756 | { | |
3757 | length = 1; | |
3758 | } | |
c906108c | 3759 | } |
e142c38c | 3760 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 3761 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 3762 | if (cu->language == language_fortran) |
b21b22e0 PS |
3763 | { |
3764 | /* Need to create a unique string type for bounds | |
3765 | information */ | |
3766 | type = create_string_type (0, range_type); | |
3767 | } | |
3768 | else | |
3769 | { | |
e142c38c | 3770 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
3771 | type = create_string_type (char_type, range_type); |
3772 | } | |
c906108c SS |
3773 | die->type = type; |
3774 | } | |
3775 | ||
3776 | /* Handle DIES due to C code like: | |
3777 | ||
3778 | struct foo | |
c5aa993b JM |
3779 | { |
3780 | int (*funcp)(int a, long l); | |
3781 | int b; | |
3782 | }; | |
c906108c SS |
3783 | |
3784 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 3785 | */ |
c906108c SS |
3786 | |
3787 | static void | |
e7c27a73 | 3788 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3789 | { |
3790 | struct type *type; /* Type that this function returns */ | |
3791 | struct type *ftype; /* Function that returns above type */ | |
3792 | struct attribute *attr; | |
3793 | ||
3794 | /* Decode the type that this subroutine returns */ | |
3795 | if (die->type) | |
3796 | { | |
3797 | return; | |
3798 | } | |
e7c27a73 | 3799 | type = die_type (die, cu); |
c906108c SS |
3800 | ftype = lookup_function_type (type); |
3801 | ||
3802 | /* All functions in C++ have prototypes. */ | |
e142c38c | 3803 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 3804 | if ((attr && (DW_UNSND (attr) != 0)) |
e142c38c | 3805 | || cu->language == language_cplus) |
c906108c SS |
3806 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
3807 | ||
639d11d3 | 3808 | if (die->child != NULL) |
c906108c SS |
3809 | { |
3810 | struct die_info *child_die; | |
3811 | int nparams = 0; | |
3812 | int iparams = 0; | |
3813 | ||
3814 | /* Count the number of parameters. | |
3815 | FIXME: GDB currently ignores vararg functions, but knows about | |
3816 | vararg member functions. */ | |
639d11d3 | 3817 | child_die = die->child; |
c906108c SS |
3818 | while (child_die && child_die->tag) |
3819 | { | |
3820 | if (child_die->tag == DW_TAG_formal_parameter) | |
3821 | nparams++; | |
3822 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
3823 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
3824 | child_die = sibling_die (child_die); | |
3825 | } | |
3826 | ||
3827 | /* Allocate storage for parameters and fill them in. */ | |
3828 | TYPE_NFIELDS (ftype) = nparams; | |
3829 | TYPE_FIELDS (ftype) = (struct field *) | |
3830 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
3831 | ||
639d11d3 | 3832 | child_die = die->child; |
c906108c SS |
3833 | while (child_die && child_die->tag) |
3834 | { | |
3835 | if (child_die->tag == DW_TAG_formal_parameter) | |
3836 | { | |
3837 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
3838 | member functions. G++ helps GDB by marking the first |
3839 | parameter for non-static member functions (which is the | |
3840 | this pointer) as artificial. We pass this information | |
3841 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 3842 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
3843 | if (attr) |
3844 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
3845 | else | |
3846 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 3847 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
3848 | iparams++; |
3849 | } | |
3850 | child_die = sibling_die (child_die); | |
3851 | } | |
3852 | } | |
3853 | ||
3854 | die->type = ftype; | |
3855 | } | |
3856 | ||
3857 | static void | |
e7c27a73 | 3858 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3859 | { |
e7c27a73 | 3860 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
3861 | struct attribute *attr; |
3862 | char *name = NULL; | |
c906108c SS |
3863 | |
3864 | if (!die->type) | |
3865 | { | |
e142c38c | 3866 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 3867 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
3868 | { |
3869 | name = DW_STRING (attr); | |
3870 | } | |
3871 | die->type = init_type (TYPE_CODE_TYPEDEF, 0, TYPE_FLAG_TARGET_STUB, name, objfile); | |
e7c27a73 | 3872 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
3873 | } |
3874 | } | |
3875 | ||
3876 | /* Find a representation of a given base type and install | |
3877 | it in the TYPE field of the die. */ | |
3878 | ||
3879 | static void | |
e7c27a73 | 3880 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3881 | { |
e7c27a73 | 3882 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3883 | struct type *type; |
3884 | struct attribute *attr; | |
3885 | int encoding = 0, size = 0; | |
3886 | ||
3887 | /* If we've already decoded this die, this is a no-op. */ | |
3888 | if (die->type) | |
3889 | { | |
3890 | return; | |
3891 | } | |
3892 | ||
e142c38c | 3893 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
3894 | if (attr) |
3895 | { | |
3896 | encoding = DW_UNSND (attr); | |
3897 | } | |
e142c38c | 3898 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3899 | if (attr) |
3900 | { | |
3901 | size = DW_UNSND (attr); | |
3902 | } | |
e142c38c | 3903 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3904 | if (attr && DW_STRING (attr)) |
3905 | { | |
3906 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 3907 | int type_flags = 0; |
c906108c SS |
3908 | |
3909 | switch (encoding) | |
3910 | { | |
3911 | case DW_ATE_address: | |
3912 | /* Turn DW_ATE_address into a void * pointer. */ | |
3913 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 3914 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
3915 | break; |
3916 | case DW_ATE_boolean: | |
3917 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 3918 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
3919 | break; |
3920 | case DW_ATE_complex_float: | |
3921 | code = TYPE_CODE_COMPLEX; | |
3922 | break; | |
3923 | case DW_ATE_float: | |
3924 | code = TYPE_CODE_FLT; | |
3925 | break; | |
3926 | case DW_ATE_signed: | |
3927 | case DW_ATE_signed_char: | |
3928 | break; | |
3929 | case DW_ATE_unsigned: | |
3930 | case DW_ATE_unsigned_char: | |
f5ef7c67 | 3931 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
3932 | break; |
3933 | default: | |
4d3c2250 KB |
3934 | complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'", |
3935 | dwarf_type_encoding_name (encoding)); | |
c906108c SS |
3936 | break; |
3937 | } | |
f5ef7c67 | 3938 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 3939 | if (encoding == DW_ATE_address) |
e142c38c DJ |
3940 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
3941 | cu); | |
f65ca430 DJ |
3942 | else if (encoding == DW_ATE_complex_float) |
3943 | { | |
3944 | if (size == 32) | |
3945 | TYPE_TARGET_TYPE (type) | |
e142c38c | 3946 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
3947 | else if (size == 16) |
3948 | TYPE_TARGET_TYPE (type) | |
e142c38c | 3949 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
3950 | else if (size == 8) |
3951 | TYPE_TARGET_TYPE (type) | |
e142c38c | 3952 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 3953 | } |
c906108c SS |
3954 | } |
3955 | else | |
3956 | { | |
e7c27a73 | 3957 | type = dwarf_base_type (encoding, size, cu); |
c906108c SS |
3958 | } |
3959 | die->type = type; | |
3960 | } | |
3961 | ||
a02abb62 JB |
3962 | /* Read the given DW_AT_subrange DIE. */ |
3963 | ||
3964 | static void | |
3965 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
3966 | { | |
3967 | struct type *base_type; | |
3968 | struct type *range_type; | |
3969 | struct attribute *attr; | |
3970 | int low = 0; | |
3971 | int high = -1; | |
3972 | ||
3973 | /* If we have already decoded this die, then nothing more to do. */ | |
3974 | if (die->type) | |
3975 | return; | |
3976 | ||
3977 | base_type = die_type (die, cu); | |
3978 | if (base_type == NULL) | |
3979 | { | |
3980 | complaint (&symfile_complaints, | |
3981 | "DW_AT_type missing from DW_TAG_subrange_type"); | |
3982 | return; | |
3983 | } | |
3984 | ||
3985 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
3986 | base_type = alloc_type (NULL); | |
3987 | ||
e142c38c | 3988 | if (cu->language == language_fortran) |
a02abb62 JB |
3989 | { |
3990 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
3991 | low = 1; | |
3992 | } | |
3993 | ||
e142c38c | 3994 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
3995 | if (attr) |
3996 | low = dwarf2_get_attr_constant_value (attr, 0); | |
3997 | ||
e142c38c | 3998 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
3999 | if (attr) |
4000 | { | |
4001 | if (attr->form == DW_FORM_block1) | |
4002 | { | |
4003 | /* GCC encodes arrays with unspecified or dynamic length | |
4004 | with a DW_FORM_block1 attribute. | |
4005 | FIXME: GDB does not yet know how to handle dynamic | |
4006 | arrays properly, treat them as arrays with unspecified | |
4007 | length for now. | |
4008 | ||
4009 | FIXME: jimb/2003-09-22: GDB does not really know | |
4010 | how to handle arrays of unspecified length | |
4011 | either; we just represent them as zero-length | |
4012 | arrays. Choose an appropriate upper bound given | |
4013 | the lower bound we've computed above. */ | |
4014 | high = low - 1; | |
4015 | } | |
4016 | else | |
4017 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4018 | } | |
4019 | ||
4020 | range_type = create_range_type (NULL, base_type, low, high); | |
4021 | ||
e142c38c | 4022 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4023 | if (attr && DW_STRING (attr)) |
4024 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4025 | ||
e142c38c | 4026 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4027 | if (attr) |
4028 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4029 | ||
4030 | die->type = range_type; | |
4031 | } | |
4032 | ||
4033 | ||
c906108c SS |
4034 | /* Read a whole compilation unit into a linked list of dies. */ |
4035 | ||
f9aca02d | 4036 | static struct die_info * |
e7c27a73 | 4037 | read_comp_unit (char *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4038 | { |
b3810801 | 4039 | /* Reset die reference table; we are |
7f0e3f52 AC |
4040 | building new ones now. */ |
4041 | dwarf2_empty_hash_tables (); | |
c906108c | 4042 | |
e7c27a73 | 4043 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4044 | } |
4045 | ||
4046 | /* Read a single die and all its descendents. Set the die's sibling | |
4047 | field to NULL; set other fields in the die correctly, and set all | |
4048 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4049 | location of the info_ptr after reading all of those dies. PARENT | |
4050 | is the parent of the die in question. */ | |
4051 | ||
4052 | static struct die_info * | |
4053 | read_die_and_children (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4054 | struct dwarf2_cu *cu, |
639d11d3 DC |
4055 | char **new_info_ptr, |
4056 | struct die_info *parent) | |
4057 | { | |
4058 | struct die_info *die; | |
4059 | char *cur_ptr; | |
4060 | int has_children; | |
4061 | ||
e7c27a73 | 4062 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
639d11d3 DC |
4063 | store_in_ref_table (die->offset, die); |
4064 | ||
4065 | if (has_children) | |
4066 | { | |
e7c27a73 | 4067 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4068 | new_info_ptr, die); |
4069 | } | |
4070 | else | |
4071 | { | |
4072 | die->child = NULL; | |
4073 | *new_info_ptr = cur_ptr; | |
4074 | } | |
4075 | ||
4076 | die->sibling = NULL; | |
4077 | die->parent = parent; | |
4078 | return die; | |
4079 | } | |
4080 | ||
4081 | /* Read a die, all of its descendents, and all of its siblings; set | |
4082 | all of the fields of all of the dies correctly. Arguments are as | |
4083 | in read_die_and_children. */ | |
4084 | ||
4085 | static struct die_info * | |
4086 | read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4087 | struct dwarf2_cu *cu, |
639d11d3 DC |
4088 | char **new_info_ptr, |
4089 | struct die_info *parent) | |
4090 | { | |
4091 | struct die_info *first_die, *last_sibling; | |
4092 | char *cur_ptr; | |
4093 | ||
c906108c | 4094 | cur_ptr = info_ptr; |
639d11d3 DC |
4095 | first_die = last_sibling = NULL; |
4096 | ||
4097 | while (1) | |
c906108c | 4098 | { |
639d11d3 | 4099 | struct die_info *die |
e7c27a73 | 4100 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4101 | |
4102 | if (!first_die) | |
c906108c | 4103 | { |
639d11d3 | 4104 | first_die = die; |
c906108c | 4105 | } |
639d11d3 | 4106 | else |
c906108c | 4107 | { |
639d11d3 | 4108 | last_sibling->sibling = die; |
c906108c SS |
4109 | } |
4110 | ||
639d11d3 | 4111 | if (die->tag == 0) |
c906108c | 4112 | { |
639d11d3 DC |
4113 | *new_info_ptr = cur_ptr; |
4114 | return first_die; | |
c906108c SS |
4115 | } |
4116 | else | |
4117 | { | |
639d11d3 | 4118 | last_sibling = die; |
c906108c SS |
4119 | } |
4120 | } | |
c906108c SS |
4121 | } |
4122 | ||
4123 | /* Free a linked list of dies. */ | |
4124 | ||
4125 | static void | |
fba45db2 | 4126 | free_die_list (struct die_info *dies) |
c906108c SS |
4127 | { |
4128 | struct die_info *die, *next; | |
4129 | ||
4130 | die = dies; | |
4131 | while (die) | |
4132 | { | |
639d11d3 DC |
4133 | if (die->child != NULL) |
4134 | free_die_list (die->child); | |
4135 | next = die->sibling; | |
b8c9b27d KB |
4136 | xfree (die->attrs); |
4137 | xfree (die); | |
c906108c SS |
4138 | die = next; |
4139 | } | |
4140 | } | |
4141 | ||
74b7792f AC |
4142 | static void |
4143 | do_free_die_list_cleanup (void *dies) | |
4144 | { | |
4145 | free_die_list (dies); | |
4146 | } | |
4147 | ||
4148 | static struct cleanup * | |
4149 | make_cleanup_free_die_list (struct die_info *dies) | |
4150 | { | |
4151 | return make_cleanup (do_free_die_list_cleanup, dies); | |
4152 | } | |
4153 | ||
4154 | ||
c906108c | 4155 | /* Read the contents of the section at OFFSET and of size SIZE from the |
8b92e4d5 | 4156 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4157 | |
b6af0555 | 4158 | char * |
188dd5d6 | 4159 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4160 | { |
4161 | bfd *abfd = objfile->obfd; | |
086df311 | 4162 | char *buf, *retbuf; |
188dd5d6 | 4163 | bfd_size_type size = bfd_get_section_size_before_reloc (sectp); |
c906108c SS |
4164 | |
4165 | if (size == 0) | |
4166 | return NULL; | |
4167 | ||
8b92e4d5 | 4168 | buf = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
086df311 DJ |
4169 | retbuf |
4170 | = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf); | |
4171 | if (retbuf != NULL) | |
4172 | return retbuf; | |
4173 | ||
188dd5d6 DJ |
4174 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
4175 | || bfd_bread (buf, size, abfd) != size) | |
4176 | error ("Dwarf Error: Can't read DWARF data from '%s'", | |
4177 | bfd_get_filename (abfd)); | |
4178 | ||
c906108c SS |
4179 | return buf; |
4180 | } | |
4181 | ||
4182 | /* In DWARF version 2, the description of the debugging information is | |
4183 | stored in a separate .debug_abbrev section. Before we read any | |
4184 | dies from a section we read in all abbreviations and install them | |
4185 | in a hash table. */ | |
4186 | ||
4187 | static void | |
e7c27a73 | 4188 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4189 | { |
e7c27a73 | 4190 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4191 | char *abbrev_ptr; |
4192 | struct abbrev_info *cur_abbrev; | |
4193 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
4194 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
4195 | struct attr_abbrev *cur_attrs; |
4196 | unsigned int allocated_attrs; | |
c906108c | 4197 | |
57349743 | 4198 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
4199 | obstack_init (&cu->abbrev_obstack); |
4200 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
4201 | (ABBREV_HASH_SIZE | |
4202 | * sizeof (struct abbrev_info *))); | |
4203 | memset (cu->dwarf2_abbrevs, 0, | |
4204 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 4205 | |
57349743 | 4206 | abbrev_ptr = dwarf_abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
4207 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4208 | abbrev_ptr += bytes_read; | |
4209 | ||
f3dd6933 DJ |
4210 | allocated_attrs = ATTR_ALLOC_CHUNK; |
4211 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
4212 | ||
c906108c SS |
4213 | /* loop until we reach an abbrev number of 0 */ |
4214 | while (abbrev_number) | |
4215 | { | |
f3dd6933 | 4216 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
4217 | |
4218 | /* read in abbrev header */ | |
4219 | cur_abbrev->number = abbrev_number; | |
4220 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4221 | abbrev_ptr += bytes_read; | |
4222 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
4223 | abbrev_ptr += 1; | |
4224 | ||
4225 | /* now read in declarations */ | |
4226 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4227 | abbrev_ptr += bytes_read; | |
4228 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4229 | abbrev_ptr += bytes_read; | |
4230 | while (abbrev_name) | |
4231 | { | |
f3dd6933 | 4232 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 4233 | { |
f3dd6933 DJ |
4234 | allocated_attrs += ATTR_ALLOC_CHUNK; |
4235 | cur_attrs | |
4236 | = xrealloc (cur_attrs, (allocated_attrs | |
4237 | * sizeof (struct attr_abbrev))); | |
c906108c | 4238 | } |
f3dd6933 DJ |
4239 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
4240 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
4241 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4242 | abbrev_ptr += bytes_read; | |
4243 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4244 | abbrev_ptr += bytes_read; | |
4245 | } | |
4246 | ||
f3dd6933 DJ |
4247 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
4248 | (cur_abbrev->num_attrs | |
4249 | * sizeof (struct attr_abbrev))); | |
4250 | memcpy (cur_abbrev->attrs, cur_attrs, | |
4251 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
4252 | ||
c906108c | 4253 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
4254 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
4255 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
4256 | |
4257 | /* Get next abbreviation. | |
4258 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
4259 | always properly terminated with an abbrev number of 0. |
4260 | Exit loop if we encounter an abbreviation which we have | |
4261 | already read (which means we are about to read the abbreviations | |
4262 | for the next compile unit) or if the end of the abbreviation | |
4263 | table is reached. */ | |
c906108c | 4264 | if ((unsigned int) (abbrev_ptr - dwarf_abbrev_buffer) |
c5aa993b | 4265 | >= dwarf_abbrev_size) |
c906108c SS |
4266 | break; |
4267 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4268 | abbrev_ptr += bytes_read; | |
e7c27a73 | 4269 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
4270 | break; |
4271 | } | |
f3dd6933 DJ |
4272 | |
4273 | xfree (cur_attrs); | |
c906108c SS |
4274 | } |
4275 | ||
f3dd6933 | 4276 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 4277 | |
c906108c | 4278 | static void |
f3dd6933 | 4279 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 4280 | { |
f3dd6933 | 4281 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 4282 | |
f3dd6933 DJ |
4283 | obstack_free (&cu->abbrev_obstack, NULL); |
4284 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
4285 | } |
4286 | ||
4287 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
4288 | ||
4289 | static struct abbrev_info * | |
e7c27a73 | 4290 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
4291 | { |
4292 | unsigned int hash_number; | |
4293 | struct abbrev_info *abbrev; | |
4294 | ||
4295 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 4296 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
4297 | |
4298 | while (abbrev) | |
4299 | { | |
4300 | if (abbrev->number == number) | |
4301 | return abbrev; | |
4302 | else | |
4303 | abbrev = abbrev->next; | |
4304 | } | |
4305 | return NULL; | |
4306 | } | |
4307 | ||
4308 | /* Read a minimal amount of information into the minimal die structure. */ | |
4309 | ||
4310 | static char * | |
107d2387 | 4311 | read_partial_die (struct partial_die_info *part_die, bfd *abfd, |
e7c27a73 | 4312 | char *info_ptr, struct dwarf2_cu *cu) |
c906108c SS |
4313 | { |
4314 | unsigned int abbrev_number, bytes_read, i; | |
4315 | struct abbrev_info *abbrev; | |
4316 | struct attribute attr; | |
4317 | struct attribute spec_attr; | |
4318 | int found_spec_attr = 0; | |
c5aa993b | 4319 | int has_low_pc_attr = 0; |
c906108c SS |
4320 | int has_high_pc_attr = 0; |
4321 | ||
4322 | *part_die = zeroed_partial_die; | |
c906108c SS |
4323 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4324 | info_ptr += bytes_read; | |
4325 | if (!abbrev_number) | |
4326 | return info_ptr; | |
4327 | ||
e7c27a73 | 4328 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4329 | if (!abbrev) |
4330 | { | |
659b0389 ML |
4331 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, |
4332 | bfd_get_filename (abfd)); | |
c906108c SS |
4333 | } |
4334 | part_die->offset = info_ptr - dwarf_info_buffer; | |
4335 | part_die->tag = abbrev->tag; | |
4336 | part_die->has_children = abbrev->has_children; | |
4337 | part_die->abbrev = abbrev_number; | |
4338 | ||
4339 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4340 | { | |
e7c27a73 | 4341 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
4342 | |
4343 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 4344 | partial symbol table. */ |
c906108c SS |
4345 | switch (attr.name) |
4346 | { | |
4347 | case DW_AT_name: | |
4348 | ||
4349 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
4350 | if (part_die->name == NULL) | |
4351 | part_die->name = DW_STRING (&attr); | |
4352 | break; | |
4353 | case DW_AT_MIPS_linkage_name: | |
4354 | part_die->name = DW_STRING (&attr); | |
4355 | break; | |
4356 | case DW_AT_low_pc: | |
4357 | has_low_pc_attr = 1; | |
4358 | part_die->lowpc = DW_ADDR (&attr); | |
4359 | break; | |
4360 | case DW_AT_high_pc: | |
4361 | has_high_pc_attr = 1; | |
4362 | part_die->highpc = DW_ADDR (&attr); | |
4363 | break; | |
4364 | case DW_AT_location: | |
8e19ed76 PS |
4365 | /* Support the .debug_loc offsets */ |
4366 | if (attr_form_is_block (&attr)) | |
4367 | { | |
4368 | part_die->locdesc = DW_BLOCK (&attr); | |
4369 | } | |
4370 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
4371 | { | |
4d3c2250 | 4372 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4373 | } |
4374 | else | |
4375 | { | |
4d3c2250 KB |
4376 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4377 | "partial symbol information"); | |
8e19ed76 | 4378 | } |
c906108c SS |
4379 | break; |
4380 | case DW_AT_language: | |
4381 | part_die->language = DW_UNSND (&attr); | |
4382 | break; | |
4383 | case DW_AT_external: | |
4384 | part_die->is_external = DW_UNSND (&attr); | |
4385 | break; | |
4386 | case DW_AT_declaration: | |
4387 | part_die->is_declaration = DW_UNSND (&attr); | |
4388 | break; | |
4389 | case DW_AT_type: | |
4390 | part_die->has_type = 1; | |
4391 | break; | |
4392 | case DW_AT_abstract_origin: | |
4393 | case DW_AT_specification: | |
4394 | found_spec_attr = 1; | |
4395 | spec_attr = attr; | |
4396 | break; | |
4397 | case DW_AT_sibling: | |
4398 | /* Ignore absolute siblings, they might point outside of | |
4399 | the current compile unit. */ | |
4400 | if (attr.form == DW_FORM_ref_addr) | |
4d3c2250 | 4401 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); |
c906108c SS |
4402 | else |
4403 | part_die->sibling = | |
e142c38c | 4404 | dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr, cu); |
c906108c SS |
4405 | break; |
4406 | default: | |
4407 | break; | |
4408 | } | |
4409 | } | |
4410 | ||
4411 | /* If we found a reference attribute and the die has no name, try | |
4412 | to find a name in the referred to die. */ | |
4413 | ||
4414 | if (found_spec_attr && part_die->name == NULL) | |
4415 | { | |
4416 | struct partial_die_info spec_die; | |
4417 | char *spec_ptr; | |
c906108c | 4418 | |
e142c38c DJ |
4419 | spec_ptr = dwarf_info_buffer |
4420 | + dwarf2_get_ref_die_offset (&spec_attr, cu); | |
e7c27a73 | 4421 | read_partial_die (&spec_die, abfd, spec_ptr, cu); |
c906108c SS |
4422 | if (spec_die.name) |
4423 | { | |
4424 | part_die->name = spec_die.name; | |
4425 | ||
4426 | /* Copy DW_AT_external attribute if it is set. */ | |
4427 | if (spec_die.is_external) | |
4428 | part_die->is_external = spec_die.is_external; | |
4429 | } | |
4430 | } | |
4431 | ||
4432 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
4433 | eliminate duplicate copies of functions and vtables and such. | |
4434 | The linker will arbitrarily choose one and discard the others. | |
4435 | The AT_*_pc values for such functions refer to local labels in | |
4436 | these sections. If the section from that file was discarded, the | |
4437 | labels are not in the output, so the relocs get a value of 0. | |
4438 | If this is a discarded function, mark the pc bounds as invalid, | |
4439 | so that GDB will ignore it. */ | |
4440 | if (has_low_pc_attr && has_high_pc_attr | |
4441 | && part_die->lowpc < part_die->highpc | |
4442 | && (part_die->lowpc != 0 | |
4443 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 4444 | part_die->has_pc_info = 1; |
c906108c SS |
4445 | return info_ptr; |
4446 | } | |
4447 | ||
639d11d3 DC |
4448 | /* Read the die from the .debug_info section buffer. Set DIEP to |
4449 | point to a newly allocated die with its information, except for its | |
4450 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
4451 | whether the die has children or not. */ | |
c906108c SS |
4452 | |
4453 | static char * | |
107d2387 | 4454 | read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr, |
e7c27a73 | 4455 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
4456 | { |
4457 | unsigned int abbrev_number, bytes_read, i, offset; | |
4458 | struct abbrev_info *abbrev; | |
4459 | struct die_info *die; | |
4460 | ||
4461 | offset = info_ptr - dwarf_info_buffer; | |
4462 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4463 | info_ptr += bytes_read; | |
4464 | if (!abbrev_number) | |
4465 | { | |
4466 | die = dwarf_alloc_die (); | |
4467 | die->tag = 0; | |
4468 | die->abbrev = abbrev_number; | |
4469 | die->type = NULL; | |
4470 | *diep = die; | |
639d11d3 | 4471 | *has_children = 0; |
c906108c SS |
4472 | return info_ptr; |
4473 | } | |
4474 | ||
e7c27a73 | 4475 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4476 | if (!abbrev) |
4477 | { | |
639d11d3 DC |
4478 | error ("Dwarf Error: could not find abbrev number %d [in module %s]", |
4479 | abbrev_number, | |
4480 | bfd_get_filename (abfd)); | |
c906108c SS |
4481 | } |
4482 | die = dwarf_alloc_die (); | |
4483 | die->offset = offset; | |
4484 | die->tag = abbrev->tag; | |
c906108c SS |
4485 | die->abbrev = abbrev_number; |
4486 | die->type = NULL; | |
4487 | ||
4488 | die->num_attrs = abbrev->num_attrs; | |
4489 | die->attrs = (struct attribute *) | |
4490 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
4491 | ||
4492 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4493 | { | |
4494 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 4495 | abfd, info_ptr, cu); |
c906108c SS |
4496 | } |
4497 | ||
4498 | *diep = die; | |
639d11d3 | 4499 | *has_children = abbrev->has_children; |
c906108c SS |
4500 | return info_ptr; |
4501 | } | |
4502 | ||
a8329558 | 4503 | /* Read an attribute value described by an attribute form. */ |
c906108c SS |
4504 | |
4505 | static char * | |
a8329558 | 4506 | read_attribute_value (struct attribute *attr, unsigned form, |
e7c27a73 DJ |
4507 | bfd *abfd, char *info_ptr, |
4508 | struct dwarf2_cu *cu) | |
c906108c | 4509 | { |
e7c27a73 | 4510 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4511 | unsigned int bytes_read; |
4512 | struct dwarf_block *blk; | |
4513 | ||
a8329558 KW |
4514 | attr->form = form; |
4515 | switch (form) | |
c906108c SS |
4516 | { |
4517 | case DW_FORM_addr: | |
4518 | case DW_FORM_ref_addr: | |
e7c27a73 | 4519 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 4520 | info_ptr += bytes_read; |
c906108c SS |
4521 | break; |
4522 | case DW_FORM_block2: | |
4523 | blk = dwarf_alloc_block (); | |
4524 | blk->size = read_2_bytes (abfd, info_ptr); | |
4525 | info_ptr += 2; | |
4526 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4527 | info_ptr += blk->size; | |
4528 | DW_BLOCK (attr) = blk; | |
4529 | break; | |
4530 | case DW_FORM_block4: | |
4531 | blk = dwarf_alloc_block (); | |
4532 | blk->size = read_4_bytes (abfd, info_ptr); | |
4533 | info_ptr += 4; | |
4534 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4535 | info_ptr += blk->size; | |
4536 | DW_BLOCK (attr) = blk; | |
4537 | break; | |
4538 | case DW_FORM_data2: | |
4539 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4540 | info_ptr += 2; | |
4541 | break; | |
4542 | case DW_FORM_data4: | |
4543 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4544 | info_ptr += 4; | |
4545 | break; | |
4546 | case DW_FORM_data8: | |
4547 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4548 | info_ptr += 8; | |
4549 | break; | |
4550 | case DW_FORM_string: | |
4551 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
4552 | info_ptr += bytes_read; | |
4553 | break; | |
4bdf3d34 JJ |
4554 | case DW_FORM_strp: |
4555 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
4556 | &bytes_read); | |
4557 | info_ptr += bytes_read; | |
4558 | break; | |
c906108c SS |
4559 | case DW_FORM_block: |
4560 | blk = dwarf_alloc_block (); | |
4561 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4562 | info_ptr += bytes_read; | |
4563 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4564 | info_ptr += blk->size; | |
4565 | DW_BLOCK (attr) = blk; | |
4566 | break; | |
4567 | case DW_FORM_block1: | |
4568 | blk = dwarf_alloc_block (); | |
4569 | blk->size = read_1_byte (abfd, info_ptr); | |
4570 | info_ptr += 1; | |
4571 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4572 | info_ptr += blk->size; | |
4573 | DW_BLOCK (attr) = blk; | |
4574 | break; | |
4575 | case DW_FORM_data1: | |
4576 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4577 | info_ptr += 1; | |
4578 | break; | |
4579 | case DW_FORM_flag: | |
4580 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4581 | info_ptr += 1; | |
4582 | break; | |
4583 | case DW_FORM_sdata: | |
4584 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
4585 | info_ptr += bytes_read; | |
4586 | break; | |
4587 | case DW_FORM_udata: | |
4588 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4589 | info_ptr += bytes_read; | |
4590 | break; | |
4591 | case DW_FORM_ref1: | |
4592 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4593 | info_ptr += 1; | |
4594 | break; | |
4595 | case DW_FORM_ref2: | |
4596 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4597 | info_ptr += 2; | |
4598 | break; | |
4599 | case DW_FORM_ref4: | |
4600 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4601 | info_ptr += 4; | |
4602 | break; | |
613e1657 KB |
4603 | case DW_FORM_ref8: |
4604 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4605 | info_ptr += 8; | |
4606 | break; | |
c906108c SS |
4607 | case DW_FORM_ref_udata: |
4608 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4609 | info_ptr += bytes_read; | |
4610 | break; | |
c906108c | 4611 | case DW_FORM_indirect: |
a8329558 KW |
4612 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4613 | info_ptr += bytes_read; | |
e7c27a73 | 4614 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 4615 | break; |
c906108c | 4616 | default: |
659b0389 ML |
4617 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", |
4618 | dwarf_form_name (form), | |
4619 | bfd_get_filename (abfd)); | |
c906108c SS |
4620 | } |
4621 | return info_ptr; | |
4622 | } | |
4623 | ||
a8329558 KW |
4624 | /* Read an attribute described by an abbreviated attribute. */ |
4625 | ||
4626 | static char * | |
4627 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, | |
e7c27a73 | 4628 | bfd *abfd, char *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
4629 | { |
4630 | attr->name = abbrev->name; | |
e7c27a73 | 4631 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
4632 | } |
4633 | ||
c906108c SS |
4634 | /* read dwarf information from a buffer */ |
4635 | ||
4636 | static unsigned int | |
fba45db2 | 4637 | read_1_byte (bfd *abfd, char *buf) |
c906108c SS |
4638 | { |
4639 | return bfd_get_8 (abfd, (bfd_byte *) buf); | |
4640 | } | |
4641 | ||
4642 | static int | |
fba45db2 | 4643 | read_1_signed_byte (bfd *abfd, char *buf) |
c906108c SS |
4644 | { |
4645 | return bfd_get_signed_8 (abfd, (bfd_byte *) buf); | |
4646 | } | |
4647 | ||
4648 | static unsigned int | |
fba45db2 | 4649 | read_2_bytes (bfd *abfd, char *buf) |
c906108c SS |
4650 | { |
4651 | return bfd_get_16 (abfd, (bfd_byte *) buf); | |
4652 | } | |
4653 | ||
4654 | static int | |
fba45db2 | 4655 | read_2_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4656 | { |
4657 | return bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4658 | } | |
4659 | ||
4660 | static unsigned int | |
fba45db2 | 4661 | read_4_bytes (bfd *abfd, char *buf) |
c906108c SS |
4662 | { |
4663 | return bfd_get_32 (abfd, (bfd_byte *) buf); | |
4664 | } | |
4665 | ||
4666 | static int | |
fba45db2 | 4667 | read_4_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4668 | { |
4669 | return bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4670 | } | |
4671 | ||
ce5d95e1 | 4672 | static unsigned long |
fba45db2 | 4673 | read_8_bytes (bfd *abfd, char *buf) |
c906108c SS |
4674 | { |
4675 | return bfd_get_64 (abfd, (bfd_byte *) buf); | |
4676 | } | |
4677 | ||
4678 | static CORE_ADDR | |
e7c27a73 | 4679 | read_address (bfd *abfd, char *buf, struct dwarf2_cu *cu, int *bytes_read) |
c906108c | 4680 | { |
e7c27a73 | 4681 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4682 | CORE_ADDR retval = 0; |
4683 | ||
107d2387 | 4684 | if (cu_header->signed_addr_p) |
c906108c | 4685 | { |
107d2387 AC |
4686 | switch (cu_header->addr_size) |
4687 | { | |
4688 | case 2: | |
4689 | retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4690 | break; | |
4691 | case 4: | |
4692 | retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4693 | break; | |
4694 | case 8: | |
4695 | retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf); | |
4696 | break; | |
4697 | default: | |
8e65ff28 | 4698 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4699 | "read_address: bad switch, signed [in module %s]", |
4700 | bfd_get_filename (abfd)); | |
107d2387 AC |
4701 | } |
4702 | } | |
4703 | else | |
4704 | { | |
4705 | switch (cu_header->addr_size) | |
4706 | { | |
4707 | case 2: | |
4708 | retval = bfd_get_16 (abfd, (bfd_byte *) buf); | |
4709 | break; | |
4710 | case 4: | |
4711 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4712 | break; | |
4713 | case 8: | |
4714 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4715 | break; | |
4716 | default: | |
8e65ff28 | 4717 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4718 | "read_address: bad switch, unsigned [in module %s]", |
4719 | bfd_get_filename (abfd)); | |
107d2387 | 4720 | } |
c906108c | 4721 | } |
64367e0a | 4722 | |
107d2387 AC |
4723 | *bytes_read = cu_header->addr_size; |
4724 | return retval; | |
c906108c SS |
4725 | } |
4726 | ||
f7ef9339 | 4727 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
4728 | specification allows the initial length to take up either 4 bytes |
4729 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
4730 | bytes describe the length and all offsets will be 8 bytes in length | |
4731 | instead of 4. | |
4732 | ||
f7ef9339 KB |
4733 | An older, non-standard 64-bit format is also handled by this |
4734 | function. The older format in question stores the initial length | |
4735 | as an 8-byte quantity without an escape value. Lengths greater | |
4736 | than 2^32 aren't very common which means that the initial 4 bytes | |
4737 | is almost always zero. Since a length value of zero doesn't make | |
4738 | sense for the 32-bit format, this initial zero can be considered to | |
4739 | be an escape value which indicates the presence of the older 64-bit | |
4740 | format. As written, the code can't detect (old format) lengths | |
4741 | greater than 4GB. If it becomes necessary to handle lengths somewhat | |
4742 | larger than 4GB, we could allow other small values (such as the | |
4743 | non-sensical values of 1, 2, and 3) to also be used as escape values | |
4744 | indicating the presence of the old format. | |
4745 | ||
613e1657 KB |
4746 | The value returned via bytes_read should be used to increment |
4747 | the relevant pointer after calling read_initial_length(). | |
4748 | ||
4749 | As a side effect, this function sets the fields initial_length_size | |
4750 | and offset_size in cu_header to the values appropriate for the | |
4751 | length field. (The format of the initial length field determines | |
4752 | the width of file offsets to be fetched later with fetch_offset().) | |
4753 | ||
4754 | [ Note: read_initial_length() and read_offset() are based on the | |
4755 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 4756 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
4757 | from: |
4758 | ||
f7ef9339 | 4759 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
4760 | |
4761 | This document is only a draft and is subject to change. (So beware.) | |
4762 | ||
f7ef9339 KB |
4763 | Details regarding the older, non-standard 64-bit format were |
4764 | determined empirically by examining 64-bit ELF files produced | |
4765 | by the SGI toolchain on an IRIX 6.5 machine. | |
4766 | ||
4767 | - Kevin, July 16, 2002 | |
613e1657 KB |
4768 | ] */ |
4769 | ||
4770 | static LONGEST | |
4771 | read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header, | |
4772 | int *bytes_read) | |
4773 | { | |
4774 | LONGEST retval = 0; | |
4775 | ||
4776 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4777 | ||
4778 | if (retval == 0xffffffff) | |
4779 | { | |
4780 | retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4); | |
4781 | *bytes_read = 12; | |
4782 | if (cu_header != NULL) | |
4783 | { | |
4784 | cu_header->initial_length_size = 12; | |
4785 | cu_header->offset_size = 8; | |
4786 | } | |
4787 | } | |
f7ef9339 KB |
4788 | else if (retval == 0) |
4789 | { | |
4790 | /* Handle (non-standard) 64-bit DWARF2 formats such as that used | |
4791 | by IRIX. */ | |
4792 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4793 | *bytes_read = 8; | |
4794 | if (cu_header != NULL) | |
4795 | { | |
4796 | cu_header->initial_length_size = 8; | |
4797 | cu_header->offset_size = 8; | |
4798 | } | |
4799 | } | |
613e1657 KB |
4800 | else |
4801 | { | |
4802 | *bytes_read = 4; | |
4803 | if (cu_header != NULL) | |
4804 | { | |
4805 | cu_header->initial_length_size = 4; | |
4806 | cu_header->offset_size = 4; | |
4807 | } | |
4808 | } | |
4809 | ||
4810 | return retval; | |
4811 | } | |
4812 | ||
4813 | /* Read an offset from the data stream. The size of the offset is | |
4814 | given by cu_header->offset_size. */ | |
4815 | ||
4816 | static LONGEST | |
4817 | read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header, | |
4818 | int *bytes_read) | |
4819 | { | |
4820 | LONGEST retval = 0; | |
4821 | ||
4822 | switch (cu_header->offset_size) | |
4823 | { | |
4824 | case 4: | |
4825 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4826 | *bytes_read = 4; | |
4827 | break; | |
4828 | case 8: | |
4829 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4830 | *bytes_read = 8; | |
4831 | break; | |
4832 | default: | |
8e65ff28 | 4833 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4834 | "read_offset: bad switch [in module %s]", |
4835 | bfd_get_filename (abfd)); | |
613e1657 KB |
4836 | } |
4837 | ||
4838 | return retval; | |
4839 | } | |
4840 | ||
c906108c | 4841 | static char * |
fba45db2 | 4842 | read_n_bytes (bfd *abfd, char *buf, unsigned int size) |
c906108c SS |
4843 | { |
4844 | /* If the size of a host char is 8 bits, we can return a pointer | |
4845 | to the buffer, otherwise we have to copy the data to a buffer | |
4846 | allocated on the temporary obstack. */ | |
4bdf3d34 | 4847 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 4848 | return buf; |
c906108c SS |
4849 | } |
4850 | ||
4851 | static char * | |
fba45db2 | 4852 | read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
4853 | { |
4854 | /* If the size of a host char is 8 bits, we can return a pointer | |
4855 | to the string, otherwise we have to copy the string to a buffer | |
4856 | allocated on the temporary obstack. */ | |
4bdf3d34 | 4857 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
4858 | if (*buf == '\0') |
4859 | { | |
4860 | *bytes_read_ptr = 1; | |
4861 | return NULL; | |
4862 | } | |
4863 | *bytes_read_ptr = strlen (buf) + 1; | |
4864 | return buf; | |
4bdf3d34 JJ |
4865 | } |
4866 | ||
4867 | static char * | |
4868 | read_indirect_string (bfd *abfd, char *buf, | |
4869 | const struct comp_unit_head *cu_header, | |
4870 | unsigned int *bytes_read_ptr) | |
4871 | { | |
4872 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
4873 | (int *) bytes_read_ptr); | |
c906108c | 4874 | |
4bdf3d34 | 4875 | if (dwarf_str_buffer == NULL) |
c906108c | 4876 | { |
659b0389 ML |
4877 | error ("DW_FORM_strp used without .debug_str section [in module %s]", |
4878 | bfd_get_filename (abfd)); | |
4bdf3d34 | 4879 | return NULL; |
c906108c | 4880 | } |
4bdf3d34 | 4881 | if (str_offset >= dwarf_str_size) |
c906108c | 4882 | { |
659b0389 ML |
4883 | error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]", |
4884 | bfd_get_filename (abfd)); | |
c906108c SS |
4885 | return NULL; |
4886 | } | |
4bdf3d34 JJ |
4887 | gdb_assert (HOST_CHAR_BIT == 8); |
4888 | if (dwarf_str_buffer[str_offset] == '\0') | |
4889 | return NULL; | |
4890 | return dwarf_str_buffer + str_offset; | |
c906108c SS |
4891 | } |
4892 | ||
ce5d95e1 | 4893 | static unsigned long |
fba45db2 | 4894 | read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 4895 | { |
ce5d95e1 JB |
4896 | unsigned long result; |
4897 | unsigned int num_read; | |
c906108c SS |
4898 | int i, shift; |
4899 | unsigned char byte; | |
4900 | ||
4901 | result = 0; | |
4902 | shift = 0; | |
4903 | num_read = 0; | |
4904 | i = 0; | |
4905 | while (1) | |
4906 | { | |
4907 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
4908 | buf++; | |
4909 | num_read++; | |
ce5d95e1 | 4910 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
4911 | if ((byte & 128) == 0) |
4912 | { | |
4913 | break; | |
4914 | } | |
4915 | shift += 7; | |
4916 | } | |
4917 | *bytes_read_ptr = num_read; | |
4918 | return result; | |
4919 | } | |
4920 | ||
ce5d95e1 | 4921 | static long |
fba45db2 | 4922 | read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 4923 | { |
ce5d95e1 | 4924 | long result; |
c906108c SS |
4925 | int i, shift, size, num_read; |
4926 | unsigned char byte; | |
4927 | ||
4928 | result = 0; | |
4929 | shift = 0; | |
4930 | size = 32; | |
4931 | num_read = 0; | |
4932 | i = 0; | |
4933 | while (1) | |
4934 | { | |
4935 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
4936 | buf++; | |
4937 | num_read++; | |
ce5d95e1 | 4938 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
4939 | shift += 7; |
4940 | if ((byte & 128) == 0) | |
4941 | { | |
4942 | break; | |
4943 | } | |
4944 | } | |
4945 | if ((shift < size) && (byte & 0x40)) | |
4946 | { | |
4947 | result |= -(1 << shift); | |
4948 | } | |
4949 | *bytes_read_ptr = num_read; | |
4950 | return result; | |
4951 | } | |
4952 | ||
4953 | static void | |
e142c38c | 4954 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
4955 | { |
4956 | switch (lang) | |
4957 | { | |
4958 | case DW_LANG_C89: | |
4959 | case DW_LANG_C: | |
e142c38c | 4960 | cu->language = language_c; |
c906108c SS |
4961 | break; |
4962 | case DW_LANG_C_plus_plus: | |
e142c38c | 4963 | cu->language = language_cplus; |
c906108c SS |
4964 | break; |
4965 | case DW_LANG_Fortran77: | |
4966 | case DW_LANG_Fortran90: | |
b21b22e0 | 4967 | case DW_LANG_Fortran95: |
e142c38c | 4968 | cu->language = language_fortran; |
c906108c SS |
4969 | break; |
4970 | case DW_LANG_Mips_Assembler: | |
e142c38c | 4971 | cu->language = language_asm; |
c906108c | 4972 | break; |
bebd888e | 4973 | case DW_LANG_Java: |
e142c38c | 4974 | cu->language = language_java; |
bebd888e | 4975 | break; |
c906108c | 4976 | case DW_LANG_Ada83: |
8aaf0b47 | 4977 | case DW_LANG_Ada95: |
c906108c SS |
4978 | case DW_LANG_Cobol74: |
4979 | case DW_LANG_Cobol85: | |
4980 | case DW_LANG_Pascal83: | |
4981 | case DW_LANG_Modula2: | |
4982 | default: | |
e142c38c | 4983 | cu->language = language_minimal; |
c906108c SS |
4984 | break; |
4985 | } | |
e142c38c | 4986 | cu->language_defn = language_def (cu->language); |
c906108c SS |
4987 | } |
4988 | ||
4989 | /* Return the named attribute or NULL if not there. */ | |
4990 | ||
4991 | static struct attribute * | |
e142c38c | 4992 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
4993 | { |
4994 | unsigned int i; | |
4995 | struct attribute *spec = NULL; | |
4996 | ||
4997 | for (i = 0; i < die->num_attrs; ++i) | |
4998 | { | |
4999 | if (die->attrs[i].name == name) | |
5000 | { | |
5001 | return &die->attrs[i]; | |
5002 | } | |
5003 | if (die->attrs[i].name == DW_AT_specification | |
5004 | || die->attrs[i].name == DW_AT_abstract_origin) | |
5005 | spec = &die->attrs[i]; | |
5006 | } | |
5007 | if (spec) | |
5008 | { | |
5009 | struct die_info *ref_die = | |
e142c38c | 5010 | follow_die_ref (dwarf2_get_ref_die_offset (spec, cu)); |
c906108c SS |
5011 | |
5012 | if (ref_die) | |
e142c38c | 5013 | return dwarf2_attr (ref_die, name, cu); |
c906108c | 5014 | } |
c5aa993b | 5015 | |
c906108c SS |
5016 | return NULL; |
5017 | } | |
5018 | ||
3ca72b44 | 5019 | static int |
e142c38c | 5020 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 5021 | { |
e142c38c DJ |
5022 | return (dwarf2_attr (die, DW_AT_declaration, cu) |
5023 | && ! dwarf2_attr (die, DW_AT_specification, cu)); | |
3ca72b44 AC |
5024 | } |
5025 | ||
63d06c5c DC |
5026 | /* Return the die giving the specification for DIE, if there is |
5027 | one. */ | |
5028 | ||
5029 | static struct die_info * | |
e142c38c | 5030 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 5031 | { |
e142c38c | 5032 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
5033 | |
5034 | if (spec_attr == NULL) | |
5035 | return NULL; | |
5036 | else | |
e142c38c | 5037 | return follow_die_ref (dwarf2_get_ref_die_offset (spec_attr, cu)); |
63d06c5c | 5038 | } |
c906108c | 5039 | |
debd256d JB |
5040 | /* Free the line_header structure *LH, and any arrays and strings it |
5041 | refers to. */ | |
5042 | static void | |
5043 | free_line_header (struct line_header *lh) | |
5044 | { | |
5045 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 5046 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
5047 | |
5048 | /* Remember that all the lh->file_names[i].name pointers are | |
5049 | pointers into debug_line_buffer, and don't need to be freed. */ | |
5050 | if (lh->file_names) | |
a8bc7b56 | 5051 | xfree (lh->file_names); |
debd256d JB |
5052 | |
5053 | /* Similarly for the include directory names. */ | |
5054 | if (lh->include_dirs) | |
a8bc7b56 | 5055 | xfree (lh->include_dirs); |
debd256d | 5056 | |
a8bc7b56 | 5057 | xfree (lh); |
debd256d JB |
5058 | } |
5059 | ||
5060 | ||
5061 | /* Add an entry to LH's include directory table. */ | |
5062 | static void | |
5063 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 5064 | { |
debd256d JB |
5065 | /* Grow the array if necessary. */ |
5066 | if (lh->include_dirs_size == 0) | |
c5aa993b | 5067 | { |
debd256d JB |
5068 | lh->include_dirs_size = 1; /* for testing */ |
5069 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
5070 | * sizeof (*lh->include_dirs)); | |
5071 | } | |
5072 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
5073 | { | |
5074 | lh->include_dirs_size *= 2; | |
5075 | lh->include_dirs = xrealloc (lh->include_dirs, | |
5076 | (lh->include_dirs_size | |
5077 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 5078 | } |
c906108c | 5079 | |
debd256d JB |
5080 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
5081 | } | |
5082 | ||
5083 | ||
5084 | /* Add an entry to LH's file name table. */ | |
5085 | static void | |
5086 | add_file_name (struct line_header *lh, | |
5087 | char *name, | |
5088 | unsigned int dir_index, | |
5089 | unsigned int mod_time, | |
5090 | unsigned int length) | |
5091 | { | |
5092 | struct file_entry *fe; | |
5093 | ||
5094 | /* Grow the array if necessary. */ | |
5095 | if (lh->file_names_size == 0) | |
5096 | { | |
5097 | lh->file_names_size = 1; /* for testing */ | |
5098 | lh->file_names = xmalloc (lh->file_names_size | |
5099 | * sizeof (*lh->file_names)); | |
5100 | } | |
5101 | else if (lh->num_file_names >= lh->file_names_size) | |
5102 | { | |
5103 | lh->file_names_size *= 2; | |
5104 | lh->file_names = xrealloc (lh->file_names, | |
5105 | (lh->file_names_size | |
5106 | * sizeof (*lh->file_names))); | |
5107 | } | |
5108 | ||
5109 | fe = &lh->file_names[lh->num_file_names++]; | |
5110 | fe->name = name; | |
5111 | fe->dir_index = dir_index; | |
5112 | fe->mod_time = mod_time; | |
5113 | fe->length = length; | |
5114 | } | |
5115 | ||
5116 | ||
5117 | /* Read the statement program header starting at OFFSET in | |
5118 | dwarf_line_buffer, according to the endianness of ABFD. Return a | |
5119 | pointer to a struct line_header, allocated using xmalloc. | |
5120 | ||
5121 | NOTE: the strings in the include directory and file name tables of | |
5122 | the returned object point into debug_line_buffer, and must not be | |
5123 | freed. */ | |
5124 | static struct line_header * | |
5125 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 5126 | struct dwarf2_cu *cu) |
debd256d JB |
5127 | { |
5128 | struct cleanup *back_to; | |
5129 | struct line_header *lh; | |
5130 | char *line_ptr; | |
5131 | int bytes_read; | |
5132 | int i; | |
5133 | char *cur_dir, *cur_file; | |
5134 | ||
5135 | if (dwarf_line_buffer == NULL) | |
5136 | { | |
4d3c2250 | 5137 | complaint (&symfile_complaints, "missing .debug_line section"); |
debd256d JB |
5138 | return 0; |
5139 | } | |
5140 | ||
5141 | /* Make sure that at least there's room for the total_length field. That | |
5142 | could be 12 bytes long, but we're just going to fudge that. */ | |
5143 | if (offset + 4 >= dwarf_line_size) | |
5144 | { | |
4d3c2250 | 5145 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5146 | return 0; |
5147 | } | |
5148 | ||
5149 | lh = xmalloc (sizeof (*lh)); | |
5150 | memset (lh, 0, sizeof (*lh)); | |
5151 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
5152 | (void *) lh); | |
5153 | ||
5154 | line_ptr = dwarf_line_buffer + offset; | |
5155 | ||
5156 | /* read in the header */ | |
5157 | lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read); | |
5158 | line_ptr += bytes_read; | |
5159 | if (line_ptr + lh->total_length > dwarf_line_buffer + dwarf_line_size) | |
5160 | { | |
4d3c2250 | 5161 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5162 | return 0; |
5163 | } | |
5164 | lh->statement_program_end = line_ptr + lh->total_length; | |
5165 | lh->version = read_2_bytes (abfd, line_ptr); | |
5166 | line_ptr += 2; | |
e7c27a73 | 5167 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
5168 | line_ptr += bytes_read; |
5169 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
5170 | line_ptr += 1; | |
5171 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
5172 | line_ptr += 1; | |
5173 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
5174 | line_ptr += 1; | |
5175 | lh->line_range = read_1_byte (abfd, line_ptr); | |
5176 | line_ptr += 1; | |
5177 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
5178 | line_ptr += 1; | |
5179 | lh->standard_opcode_lengths | |
5180 | = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char)); | |
5181 | ||
5182 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
5183 | for (i = 1; i < lh->opcode_base; ++i) | |
5184 | { | |
5185 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
5186 | line_ptr += 1; | |
5187 | } | |
5188 | ||
5189 | /* Read directory table */ | |
5190 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5191 | { | |
5192 | line_ptr += bytes_read; | |
5193 | add_include_dir (lh, cur_dir); | |
5194 | } | |
5195 | line_ptr += bytes_read; | |
5196 | ||
5197 | /* Read file name table */ | |
5198 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5199 | { | |
5200 | unsigned int dir_index, mod_time, length; | |
5201 | ||
5202 | line_ptr += bytes_read; | |
5203 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5204 | line_ptr += bytes_read; | |
5205 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5206 | line_ptr += bytes_read; | |
5207 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5208 | line_ptr += bytes_read; | |
5209 | ||
5210 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5211 | } | |
5212 | line_ptr += bytes_read; | |
5213 | lh->statement_program_start = line_ptr; | |
5214 | ||
5215 | if (line_ptr > dwarf_line_buffer + dwarf_line_size) | |
4d3c2250 KB |
5216 | complaint (&symfile_complaints, |
5217 | "line number info header doesn't fit in `.debug_line' section"); | |
debd256d JB |
5218 | |
5219 | discard_cleanups (back_to); | |
5220 | return lh; | |
5221 | } | |
c906108c | 5222 | |
5fb290d7 DJ |
5223 | /* This function exists to work around a bug in certain compilers |
5224 | (particularly GCC 2.95), in which the first line number marker of a | |
5225 | function does not show up until after the prologue, right before | |
5226 | the second line number marker. This function shifts ADDRESS down | |
5227 | to the beginning of the function if necessary, and is called on | |
5228 | addresses passed to record_line. */ | |
5229 | ||
5230 | static CORE_ADDR | |
e142c38c | 5231 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
5232 | { |
5233 | struct function_range *fn; | |
5234 | ||
5235 | /* Find the function_range containing address. */ | |
e142c38c | 5236 | if (!cu->first_fn) |
5fb290d7 DJ |
5237 | return address; |
5238 | ||
e142c38c DJ |
5239 | if (!cu->cached_fn) |
5240 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 5241 | |
e142c38c | 5242 | fn = cu->cached_fn; |
5fb290d7 DJ |
5243 | while (fn) |
5244 | if (fn->lowpc <= address && fn->highpc > address) | |
5245 | goto found; | |
5246 | else | |
5247 | fn = fn->next; | |
5248 | ||
e142c38c DJ |
5249 | fn = cu->first_fn; |
5250 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
5251 | if (fn->lowpc <= address && fn->highpc > address) |
5252 | goto found; | |
5253 | else | |
5254 | fn = fn->next; | |
5255 | ||
5256 | return address; | |
5257 | ||
5258 | found: | |
5259 | if (fn->seen_line) | |
5260 | return address; | |
5261 | if (address != fn->lowpc) | |
4d3c2250 KB |
5262 | complaint (&symfile_complaints, |
5263 | "misplaced first line number at 0x%lx for '%s'", | |
5264 | (unsigned long) address, fn->name); | |
5fb290d7 DJ |
5265 | fn->seen_line = 1; |
5266 | return fn->lowpc; | |
5267 | } | |
5268 | ||
debd256d JB |
5269 | /* Decode the line number information for the compilation unit whose |
5270 | line number info is at OFFSET in the .debug_line section. | |
5271 | The compilation directory of the file is passed in COMP_DIR. */ | |
5272 | ||
c906108c | 5273 | static void |
debd256d | 5274 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
e7c27a73 | 5275 | struct dwarf2_cu *cu) |
c906108c SS |
5276 | { |
5277 | char *line_ptr; | |
5278 | char *line_end; | |
e7c27a73 | 5279 | unsigned int bytes_read; |
c906108c | 5280 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
5281 | CORE_ADDR baseaddr; |
5282 | struct objfile *objfile = cu->objfile; | |
5283 | ||
5284 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5285 | |
debd256d JB |
5286 | line_ptr = lh->statement_program_start; |
5287 | line_end = lh->statement_program_end; | |
c906108c SS |
5288 | |
5289 | /* Read the statement sequences until there's nothing left. */ | |
5290 | while (line_ptr < line_end) | |
5291 | { | |
5292 | /* state machine registers */ | |
5293 | CORE_ADDR address = 0; | |
5294 | unsigned int file = 1; | |
5295 | unsigned int line = 1; | |
5296 | unsigned int column = 0; | |
debd256d | 5297 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
5298 | int basic_block = 0; |
5299 | int end_sequence = 0; | |
5300 | ||
5301 | /* Start a subfile for the current file of the state machine. */ | |
debd256d | 5302 | if (lh->num_file_names >= file) |
c906108c | 5303 | { |
debd256d JB |
5304 | /* lh->include_dirs and lh->file_names are 0-based, but the |
5305 | directory and file name numbers in the statement program | |
5306 | are 1-based. */ | |
5307 | struct file_entry *fe = &lh->file_names[file - 1]; | |
5308 | char *dir; | |
5309 | if (fe->dir_index) | |
5310 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5311 | else | |
5312 | dir = comp_dir; | |
5313 | dwarf2_start_subfile (fe->name, dir); | |
c906108c SS |
5314 | } |
5315 | ||
5316 | /* Decode the table. */ | |
c5aa993b | 5317 | while (!end_sequence) |
c906108c SS |
5318 | { |
5319 | op_code = read_1_byte (abfd, line_ptr); | |
5320 | line_ptr += 1; | |
9aa1fe7e | 5321 | |
debd256d | 5322 | if (op_code >= lh->opcode_base) |
9aa1fe7e | 5323 | { /* Special operand. */ |
debd256d JB |
5324 | adj_opcode = op_code - lh->opcode_base; |
5325 | address += (adj_opcode / lh->line_range) | |
5326 | * lh->minimum_instruction_length; | |
5327 | line += lh->line_base + (adj_opcode % lh->line_range); | |
9aa1fe7e | 5328 | /* append row to matrix using current values */ |
ddf9f258 | 5329 | record_line (current_subfile, line, |
e142c38c | 5330 | check_cu_functions (address, cu)); |
9aa1fe7e GK |
5331 | basic_block = 1; |
5332 | } | |
5333 | else switch (op_code) | |
c906108c SS |
5334 | { |
5335 | case DW_LNS_extended_op: | |
5336 | line_ptr += 1; /* ignore length */ | |
5337 | extended_op = read_1_byte (abfd, line_ptr); | |
5338 | line_ptr += 1; | |
5339 | switch (extended_op) | |
5340 | { | |
5341 | case DW_LNE_end_sequence: | |
5342 | end_sequence = 1; | |
5fb290d7 | 5343 | record_line (current_subfile, 0, address); |
c906108c SS |
5344 | break; |
5345 | case DW_LNE_set_address: | |
e7c27a73 | 5346 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
5347 | line_ptr += bytes_read; |
5348 | address += baseaddr; | |
c906108c SS |
5349 | break; |
5350 | case DW_LNE_define_file: | |
debd256d JB |
5351 | { |
5352 | char *cur_file; | |
5353 | unsigned int dir_index, mod_time, length; | |
5354 | ||
5355 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
5356 | line_ptr += bytes_read; | |
5357 | dir_index = | |
5358 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5359 | line_ptr += bytes_read; | |
5360 | mod_time = | |
5361 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5362 | line_ptr += bytes_read; | |
5363 | length = | |
5364 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5365 | line_ptr += bytes_read; | |
5366 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5367 | } | |
c906108c SS |
5368 | break; |
5369 | default: | |
4d3c2250 KB |
5370 | complaint (&symfile_complaints, |
5371 | "mangled .debug_line section"); | |
debd256d | 5372 | return; |
c906108c SS |
5373 | } |
5374 | break; | |
5375 | case DW_LNS_copy: | |
ddf9f258 | 5376 | record_line (current_subfile, line, |
e142c38c | 5377 | check_cu_functions (address, cu)); |
c906108c SS |
5378 | basic_block = 0; |
5379 | break; | |
5380 | case DW_LNS_advance_pc: | |
debd256d | 5381 | address += lh->minimum_instruction_length |
c906108c SS |
5382 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
5383 | line_ptr += bytes_read; | |
5384 | break; | |
5385 | case DW_LNS_advance_line: | |
5386 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
5387 | line_ptr += bytes_read; | |
5388 | break; | |
5389 | case DW_LNS_set_file: | |
debd256d JB |
5390 | { |
5391 | /* lh->include_dirs and lh->file_names are 0-based, | |
5392 | but the directory and file name numbers in the | |
5393 | statement program are 1-based. */ | |
5394 | struct file_entry *fe; | |
5395 | char *dir; | |
5396 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5397 | line_ptr += bytes_read; | |
5398 | fe = &lh->file_names[file - 1]; | |
5399 | if (fe->dir_index) | |
5400 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5401 | else | |
5402 | dir = comp_dir; | |
5403 | dwarf2_start_subfile (fe->name, dir); | |
5404 | } | |
c906108c SS |
5405 | break; |
5406 | case DW_LNS_set_column: | |
5407 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5408 | line_ptr += bytes_read; | |
5409 | break; | |
5410 | case DW_LNS_negate_stmt: | |
5411 | is_stmt = (!is_stmt); | |
5412 | break; | |
5413 | case DW_LNS_set_basic_block: | |
5414 | basic_block = 1; | |
5415 | break; | |
c2c6d25f JM |
5416 | /* Add to the address register of the state machine the |
5417 | address increment value corresponding to special opcode | |
5418 | 255. Ie, this value is scaled by the minimum instruction | |
5419 | length since special opcode 255 would have scaled the | |
5420 | the increment. */ | |
c906108c | 5421 | case DW_LNS_const_add_pc: |
debd256d JB |
5422 | address += (lh->minimum_instruction_length |
5423 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
5424 | break; |
5425 | case DW_LNS_fixed_advance_pc: | |
5426 | address += read_2_bytes (abfd, line_ptr); | |
5427 | line_ptr += 2; | |
5428 | break; | |
9aa1fe7e GK |
5429 | default: |
5430 | { /* Unknown standard opcode, ignore it. */ | |
5431 | int i; | |
debd256d | 5432 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
5433 | { |
5434 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5435 | line_ptr += bytes_read; | |
5436 | } | |
5437 | } | |
c906108c SS |
5438 | } |
5439 | } | |
5440 | } | |
c906108c SS |
5441 | } |
5442 | ||
5443 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
5444 | DIRNAME the name of the source directory which contains FILENAME | |
5445 | or NULL if not known. | |
5446 | This routine tries to keep line numbers from identical absolute and | |
5447 | relative file names in a common subfile. | |
5448 | ||
5449 | Using the `list' example from the GDB testsuite, which resides in | |
5450 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
5451 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
5452 | ||
c5aa993b JM |
5453 | DW_AT_name: /srcdir/list0.c |
5454 | DW_AT_comp_dir: /compdir | |
357e46e7 | 5455 | files.files[0].name: list0.h |
c5aa993b | 5456 | files.files[0].dir: /srcdir |
357e46e7 | 5457 | files.files[1].name: list0.c |
c5aa993b | 5458 | files.files[1].dir: /srcdir |
c906108c SS |
5459 | |
5460 | The line number information for list0.c has to end up in a single | |
5461 | subfile, so that `break /srcdir/list0.c:1' works as expected. */ | |
5462 | ||
5463 | static void | |
fba45db2 | 5464 | dwarf2_start_subfile (char *filename, char *dirname) |
c906108c SS |
5465 | { |
5466 | /* If the filename isn't absolute, try to match an existing subfile | |
5467 | with the full pathname. */ | |
5468 | ||
d5166ae1 | 5469 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
c906108c SS |
5470 | { |
5471 | struct subfile *subfile; | |
5472 | char *fullname = concat (dirname, "/", filename, NULL); | |
5473 | ||
5474 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
5475 | { | |
d5166ae1 | 5476 | if (FILENAME_CMP (subfile->name, fullname) == 0) |
c906108c SS |
5477 | { |
5478 | current_subfile = subfile; | |
b8c9b27d | 5479 | xfree (fullname); |
c906108c SS |
5480 | return; |
5481 | } | |
5482 | } | |
b8c9b27d | 5483 | xfree (fullname); |
c906108c SS |
5484 | } |
5485 | start_subfile (filename, dirname); | |
5486 | } | |
5487 | ||
4c2df51b DJ |
5488 | static void |
5489 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 5490 | struct dwarf2_cu *cu) |
4c2df51b | 5491 | { |
e7c27a73 DJ |
5492 | struct objfile *objfile = cu->objfile; |
5493 | struct comp_unit_head *cu_header = &cu->header; | |
5494 | ||
4c2df51b DJ |
5495 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
5496 | code here to turn a symbol with DW_AT_external and a | |
5497 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
5498 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
5499 | with some versions of binutils) where shared libraries could have | |
5500 | relocations against symbols in their debug information - the | |
5501 | minimal symbol would have the right address, but the debug info | |
5502 | would not. It's no longer necessary, because we will explicitly | |
5503 | apply relocations when we read in the debug information now. */ | |
5504 | ||
5505 | /* A DW_AT_location attribute with no contents indicates that a | |
5506 | variable has been optimized away. */ | |
5507 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
5508 | { | |
5509 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
5510 | return; | |
5511 | } | |
5512 | ||
5513 | /* Handle one degenerate form of location expression specially, to | |
5514 | preserve GDB's previous behavior when section offsets are | |
5515 | specified. If this is just a DW_OP_addr then mark this symbol | |
5516 | as LOC_STATIC. */ | |
5517 | ||
5518 | if (attr_form_is_block (attr) | |
5519 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
5520 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
5521 | { | |
5522 | int dummy; | |
5523 | ||
5524 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 5525 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
5526 | fixup_symbol_section (sym, objfile); |
5527 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
5528 | SYMBOL_SECTION (sym)); | |
5529 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
5530 | return; | |
5531 | } | |
5532 | ||
5533 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
5534 | expression evaluator, and use LOC_COMPUTED only when necessary | |
5535 | (i.e. when the value of a register or memory location is | |
5536 | referenced, or a thread-local block, etc.). Then again, it might | |
5537 | not be worthwhile. I'm assuming that it isn't unless performance | |
5538 | or memory numbers show me otherwise. */ | |
5539 | ||
e7c27a73 | 5540 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
5541 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
5542 | } | |
5543 | ||
c906108c SS |
5544 | /* Given a pointer to a DWARF information entry, figure out if we need |
5545 | to make a symbol table entry for it, and if so, create a new entry | |
5546 | and return a pointer to it. | |
5547 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 5548 | used the passed type. */ |
c906108c SS |
5549 | |
5550 | static struct symbol * | |
e7c27a73 | 5551 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 5552 | { |
e7c27a73 | 5553 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5554 | struct symbol *sym = NULL; |
5555 | char *name; | |
5556 | struct attribute *attr = NULL; | |
5557 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
5558 | CORE_ADDR baseaddr; |
5559 | ||
5560 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5561 | |
5c4e30ca | 5562 | if (die->tag != DW_TAG_namespace) |
e142c38c | 5563 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
5564 | else |
5565 | name = TYPE_NAME (type); | |
5566 | ||
c906108c SS |
5567 | if (name) |
5568 | { | |
4a146b47 | 5569 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
5570 | sizeof (struct symbol)); |
5571 | OBJSTAT (objfile, n_syms++); | |
5572 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
5573 | |
5574 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 5575 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 5576 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
5577 | |
5578 | /* Default assumptions. | |
c5aa993b | 5579 | Use the passed type or decode it from the die. */ |
176620f1 | 5580 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
5581 | SYMBOL_CLASS (sym) = LOC_STATIC; |
5582 | if (type != NULL) | |
5583 | SYMBOL_TYPE (sym) = type; | |
5584 | else | |
e7c27a73 | 5585 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 5586 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
5587 | if (attr) |
5588 | { | |
5589 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
5590 | } | |
c906108c SS |
5591 | switch (die->tag) |
5592 | { | |
5593 | case DW_TAG_label: | |
e142c38c | 5594 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
5595 | if (attr) |
5596 | { | |
5597 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
5598 | } | |
5599 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
5600 | break; | |
5601 | case DW_TAG_subprogram: | |
5602 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
5603 | finish_block. */ | |
5604 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 5605 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5606 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5607 | { | |
5608 | add_symbol_to_list (sym, &global_symbols); | |
5609 | } | |
5610 | else | |
5611 | { | |
e142c38c | 5612 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5613 | } |
5614 | break; | |
5615 | case DW_TAG_variable: | |
5616 | /* Compilation with minimal debug info may result in variables | |
5617 | with missing type entries. Change the misleading `void' type | |
5618 | to something sensible. */ | |
5619 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
5620 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
5621 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5622 | "<variable, no debug info>", | |
5623 | objfile); | |
e142c38c | 5624 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5625 | if (attr) |
5626 | { | |
e7c27a73 | 5627 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 5628 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5629 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5630 | add_symbol_to_list (sym, &global_symbols); | |
5631 | else | |
e142c38c | 5632 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5633 | break; |
5634 | } | |
e142c38c | 5635 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5636 | if (attr) |
5637 | { | |
e7c27a73 | 5638 | var_decode_location (attr, sym, cu); |
e142c38c | 5639 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5640 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 5641 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 5642 | else |
e142c38c | 5643 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5644 | } |
5645 | else | |
5646 | { | |
5647 | /* We do not know the address of this symbol. | |
c5aa993b JM |
5648 | If it is an external symbol and we have type information |
5649 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
5650 | The address of the variable will then be determined from | |
5651 | the minimal symbol table whenever the variable is | |
5652 | referenced. */ | |
e142c38c | 5653 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5654 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 5655 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
5656 | { |
5657 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
5658 | add_symbol_to_list (sym, &global_symbols); | |
5659 | } | |
5660 | } | |
5661 | break; | |
5662 | case DW_TAG_formal_parameter: | |
e142c38c | 5663 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5664 | if (attr) |
5665 | { | |
e7c27a73 | 5666 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
5667 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
5668 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
5669 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 5670 | } |
e142c38c | 5671 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5672 | if (attr) |
5673 | { | |
e7c27a73 | 5674 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5675 | } |
e142c38c | 5676 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5677 | break; |
5678 | case DW_TAG_unspecified_parameters: | |
5679 | /* From varargs functions; gdb doesn't seem to have any | |
5680 | interest in this information, so just ignore it for now. | |
5681 | (FIXME?) */ | |
5682 | break; | |
5683 | case DW_TAG_class_type: | |
5684 | case DW_TAG_structure_type: | |
5685 | case DW_TAG_union_type: | |
5686 | case DW_TAG_enumeration_type: | |
5687 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 5688 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 5689 | |
63d06c5c DC |
5690 | /* Make sure that the symbol includes appropriate enclosing |
5691 | classes/namespaces in its name. These are calculated in | |
5692 | read_structure_scope, and the correct name is saved in | |
5693 | the type. */ | |
5694 | ||
e142c38c | 5695 | if (cu->language == language_cplus) |
c906108c | 5696 | { |
63d06c5c DC |
5697 | struct type *type = SYMBOL_TYPE (sym); |
5698 | ||
5699 | if (TYPE_TAG_NAME (type) != NULL) | |
5700 | { | |
5701 | /* FIXME: carlton/2003-11-10: Should this use | |
5702 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
5703 | arises further down in this function.) */ |
5704 | /* The type's name is already allocated along with | |
5705 | this objfile, so we don't need to duplicate it | |
5706 | for the symbol. */ | |
5707 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 5708 | } |
c906108c | 5709 | } |
63d06c5c DC |
5710 | |
5711 | { | |
5712 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't | |
5713 | really ever be static objects: otherwise, if you try | |
5714 | to, say, break of a class's method and you're in a file | |
5715 | which doesn't mention that class, it won't work unless | |
5716 | the check for all static symbols in lookup_symbol_aux | |
5717 | saves you. See the OtherFileClass tests in | |
5718 | gdb.c++/namespace.exp. */ | |
5719 | ||
5720 | struct pending **list_to_add; | |
5721 | ||
e142c38c DJ |
5722 | list_to_add = (cu->list_in_scope == &file_symbols |
5723 | && cu->language == language_cplus | |
5724 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5725 | |
5726 | add_symbol_to_list (sym, list_to_add); | |
5727 | ||
5728 | /* The semantics of C++ state that "struct foo { ... }" also | |
5729 | defines a typedef for "foo". Synthesize a typedef symbol so | |
5730 | that "ptype foo" works as expected. */ | |
e142c38c | 5731 | if (cu->language == language_cplus) |
63d06c5c DC |
5732 | { |
5733 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 5734 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
5735 | sizeof (struct symbol)); |
5736 | *typedef_sym = *sym; | |
5737 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
5738 | /* The symbol's name is already allocated along with |
5739 | this objfile, so we don't need to duplicate it for | |
5740 | the type. */ | |
63d06c5c | 5741 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
d8151005 | 5742 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NATURAL_NAME (sym); |
63d06c5c DC |
5743 | add_symbol_to_list (typedef_sym, list_to_add); |
5744 | } | |
5745 | } | |
c906108c SS |
5746 | break; |
5747 | case DW_TAG_typedef: | |
63d06c5c DC |
5748 | if (processing_has_namespace_info |
5749 | && processing_current_prefix[0] != '\0') | |
5750 | { | |
4a146b47 | 5751 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5752 | processing_current_prefix, |
5753 | "::", | |
5754 | name); | |
5755 | } | |
5756 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5757 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 5758 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 5759 | break; |
c906108c | 5760 | case DW_TAG_base_type: |
a02abb62 | 5761 | case DW_TAG_subrange_type: |
c906108c | 5762 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 5763 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 5764 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5765 | break; |
5766 | case DW_TAG_enumerator: | |
63d06c5c DC |
5767 | if (processing_has_namespace_info |
5768 | && processing_current_prefix[0] != '\0') | |
5769 | { | |
4a146b47 | 5770 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5771 | processing_current_prefix, |
5772 | "::", | |
5773 | name); | |
5774 | } | |
e142c38c | 5775 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5776 | if (attr) |
5777 | { | |
e7c27a73 | 5778 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5779 | } |
63d06c5c DC |
5780 | { |
5781 | /* NOTE: carlton/2003-11-10: See comment above in the | |
5782 | DW_TAG_class_type, etc. block. */ | |
5783 | ||
5784 | struct pending **list_to_add; | |
5785 | ||
e142c38c DJ |
5786 | list_to_add = (cu->list_in_scope == &file_symbols |
5787 | && cu->language == language_cplus | |
5788 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5789 | |
5790 | add_symbol_to_list (sym, list_to_add); | |
5791 | } | |
c906108c | 5792 | break; |
5c4e30ca DC |
5793 | case DW_TAG_namespace: |
5794 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5795 | add_symbol_to_list (sym, &global_symbols); | |
5796 | break; | |
c906108c SS |
5797 | default: |
5798 | /* Not a tag we recognize. Hopefully we aren't processing | |
5799 | trash data, but since we must specifically ignore things | |
5800 | we don't recognize, there is nothing else we should do at | |
5801 | this point. */ | |
4d3c2250 KB |
5802 | complaint (&symfile_complaints, "unsupported tag: '%s'", |
5803 | dwarf_tag_name (die->tag)); | |
c906108c SS |
5804 | break; |
5805 | } | |
5806 | } | |
5807 | return (sym); | |
5808 | } | |
5809 | ||
5810 | /* Copy constant value from an attribute to a symbol. */ | |
5811 | ||
5812 | static void | |
107d2387 | 5813 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 5814 | struct dwarf2_cu *cu) |
c906108c | 5815 | { |
e7c27a73 DJ |
5816 | struct objfile *objfile = cu->objfile; |
5817 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
5818 | struct dwarf_block *blk; |
5819 | ||
5820 | switch (attr->form) | |
5821 | { | |
5822 | case DW_FORM_addr: | |
107d2387 | 5823 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 5824 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
5825 | cu_header->addr_size, |
5826 | TYPE_LENGTH (SYMBOL_TYPE | |
5827 | (sym))); | |
c906108c | 5828 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 5829 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
5830 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
5831 | it's body - store_unsigned_integer. */ | |
5832 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
5833 | DW_ADDR (attr)); | |
c906108c SS |
5834 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
5835 | break; | |
5836 | case DW_FORM_block1: | |
5837 | case DW_FORM_block2: | |
5838 | case DW_FORM_block4: | |
5839 | case DW_FORM_block: | |
5840 | blk = DW_BLOCK (attr); | |
5841 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 5842 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
5843 | blk->size, |
5844 | TYPE_LENGTH (SYMBOL_TYPE | |
5845 | (sym))); | |
c906108c | 5846 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 5847 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
5848 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
5849 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
5850 | break; | |
2df3850c JM |
5851 | |
5852 | /* The DW_AT_const_value attributes are supposed to carry the | |
5853 | symbol's value "represented as it would be on the target | |
5854 | architecture." By the time we get here, it's already been | |
5855 | converted to host endianness, so we just need to sign- or | |
5856 | zero-extend it as appropriate. */ | |
5857 | case DW_FORM_data1: | |
5858 | dwarf2_const_value_data (attr, sym, 8); | |
5859 | break; | |
c906108c | 5860 | case DW_FORM_data2: |
2df3850c JM |
5861 | dwarf2_const_value_data (attr, sym, 16); |
5862 | break; | |
c906108c | 5863 | case DW_FORM_data4: |
2df3850c JM |
5864 | dwarf2_const_value_data (attr, sym, 32); |
5865 | break; | |
c906108c | 5866 | case DW_FORM_data8: |
2df3850c JM |
5867 | dwarf2_const_value_data (attr, sym, 64); |
5868 | break; | |
5869 | ||
c906108c | 5870 | case DW_FORM_sdata: |
2df3850c JM |
5871 | SYMBOL_VALUE (sym) = DW_SND (attr); |
5872 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5873 | break; | |
5874 | ||
c906108c SS |
5875 | case DW_FORM_udata: |
5876 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
5877 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5878 | break; | |
2df3850c | 5879 | |
c906108c | 5880 | default: |
4d3c2250 KB |
5881 | complaint (&symfile_complaints, |
5882 | "unsupported const value attribute form: '%s'", | |
5883 | dwarf_form_name (attr->form)); | |
c906108c SS |
5884 | SYMBOL_VALUE (sym) = 0; |
5885 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5886 | break; | |
5887 | } | |
5888 | } | |
5889 | ||
2df3850c JM |
5890 | |
5891 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
5892 | or zero-extend it as appropriate for the symbol's type. */ | |
5893 | static void | |
5894 | dwarf2_const_value_data (struct attribute *attr, | |
5895 | struct symbol *sym, | |
5896 | int bits) | |
5897 | { | |
5898 | LONGEST l = DW_UNSND (attr); | |
5899 | ||
5900 | if (bits < sizeof (l) * 8) | |
5901 | { | |
5902 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
5903 | l &= ((LONGEST) 1 << bits) - 1; | |
5904 | else | |
bf9198f1 | 5905 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
5906 | } |
5907 | ||
5908 | SYMBOL_VALUE (sym) = l; | |
5909 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5910 | } | |
5911 | ||
5912 | ||
c906108c SS |
5913 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
5914 | ||
5915 | static struct type * | |
e7c27a73 | 5916 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5917 | { |
5918 | struct type *type; | |
5919 | struct attribute *type_attr; | |
5920 | struct die_info *type_die; | |
5921 | unsigned int ref; | |
5922 | ||
e142c38c | 5923 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
5924 | if (!type_attr) |
5925 | { | |
5926 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 5927 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
5928 | } |
5929 | else | |
5930 | { | |
e142c38c | 5931 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
5932 | type_die = follow_die_ref (ref); |
5933 | if (!type_die) | |
5934 | { | |
659b0389 | 5935 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", |
e7c27a73 | 5936 | ref, cu->objfile->name); |
c906108c SS |
5937 | return NULL; |
5938 | } | |
5939 | } | |
e7c27a73 | 5940 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
5941 | if (!type) |
5942 | { | |
5943 | dump_die (type_die); | |
659b0389 | 5944 | error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]", |
e7c27a73 | 5945 | cu->objfile->name); |
c906108c SS |
5946 | } |
5947 | return type; | |
5948 | } | |
5949 | ||
5950 | /* Return the containing type of the die in question using its | |
5951 | DW_AT_containing_type attribute. */ | |
5952 | ||
5953 | static struct type * | |
e7c27a73 | 5954 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5955 | { |
5956 | struct type *type = NULL; | |
5957 | struct attribute *type_attr; | |
5958 | struct die_info *type_die = NULL; | |
5959 | unsigned int ref; | |
5960 | ||
e142c38c | 5961 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
5962 | if (type_attr) |
5963 | { | |
e142c38c | 5964 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
5965 | type_die = follow_die_ref (ref); |
5966 | if (!type_die) | |
5967 | { | |
659b0389 | 5968 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", ref, |
e7c27a73 | 5969 | cu->objfile->name); |
c906108c SS |
5970 | return NULL; |
5971 | } | |
e7c27a73 | 5972 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
5973 | } |
5974 | if (!type) | |
5975 | { | |
5976 | if (type_die) | |
5977 | dump_die (type_die); | |
659b0389 | 5978 | error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]", |
e7c27a73 | 5979 | cu->objfile->name); |
c906108c SS |
5980 | } |
5981 | return type; | |
5982 | } | |
5983 | ||
5984 | #if 0 | |
5985 | static struct type * | |
e7c27a73 | 5986 | type_at_offset (unsigned int offset, struct dwarf2_cu *cu) |
c906108c SS |
5987 | { |
5988 | struct die_info *die; | |
5989 | struct type *type; | |
5990 | ||
5991 | die = follow_die_ref (offset); | |
5992 | if (!die) | |
5993 | { | |
5994 | error ("Dwarf Error: Cannot find type referent at offset %d.", offset); | |
5995 | return NULL; | |
5996 | } | |
e7c27a73 | 5997 | type = tag_type_to_type (die, cu); |
c906108c SS |
5998 | return type; |
5999 | } | |
6000 | #endif | |
6001 | ||
6002 | static struct type * | |
e7c27a73 | 6003 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6004 | { |
6005 | if (die->type) | |
6006 | { | |
6007 | return die->type; | |
6008 | } | |
6009 | else | |
6010 | { | |
e7c27a73 | 6011 | read_type_die (die, cu); |
c906108c SS |
6012 | if (!die->type) |
6013 | { | |
6014 | dump_die (die); | |
659b0389 | 6015 | error ("Dwarf Error: Cannot find type of die [in module %s]", |
e7c27a73 | 6016 | cu->objfile->name); |
c906108c SS |
6017 | } |
6018 | return die->type; | |
6019 | } | |
6020 | } | |
6021 | ||
6022 | static void | |
e7c27a73 | 6023 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6024 | { |
e142c38c | 6025 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
6026 | const char *old_prefix = processing_current_prefix; |
6027 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
6028 | processing_current_prefix = prefix; | |
6029 | ||
c906108c SS |
6030 | switch (die->tag) |
6031 | { | |
6032 | case DW_TAG_class_type: | |
6033 | case DW_TAG_structure_type: | |
6034 | case DW_TAG_union_type: | |
e7c27a73 | 6035 | read_structure_scope (die, cu); |
c906108c SS |
6036 | break; |
6037 | case DW_TAG_enumeration_type: | |
e7c27a73 | 6038 | read_enumeration (die, cu); |
c906108c SS |
6039 | break; |
6040 | case DW_TAG_subprogram: | |
6041 | case DW_TAG_subroutine_type: | |
e7c27a73 | 6042 | read_subroutine_type (die, cu); |
c906108c SS |
6043 | break; |
6044 | case DW_TAG_array_type: | |
e7c27a73 | 6045 | read_array_type (die, cu); |
c906108c SS |
6046 | break; |
6047 | case DW_TAG_pointer_type: | |
e7c27a73 | 6048 | read_tag_pointer_type (die, cu); |
c906108c SS |
6049 | break; |
6050 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 6051 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
6052 | break; |
6053 | case DW_TAG_reference_type: | |
e7c27a73 | 6054 | read_tag_reference_type (die, cu); |
c906108c SS |
6055 | break; |
6056 | case DW_TAG_const_type: | |
e7c27a73 | 6057 | read_tag_const_type (die, cu); |
c906108c SS |
6058 | break; |
6059 | case DW_TAG_volatile_type: | |
e7c27a73 | 6060 | read_tag_volatile_type (die, cu); |
c906108c SS |
6061 | break; |
6062 | case DW_TAG_string_type: | |
e7c27a73 | 6063 | read_tag_string_type (die, cu); |
c906108c SS |
6064 | break; |
6065 | case DW_TAG_typedef: | |
e7c27a73 | 6066 | read_typedef (die, cu); |
c906108c | 6067 | break; |
a02abb62 JB |
6068 | case DW_TAG_subrange_type: |
6069 | read_subrange_type (die, cu); | |
6070 | break; | |
c906108c | 6071 | case DW_TAG_base_type: |
e7c27a73 | 6072 | read_base_type (die, cu); |
c906108c SS |
6073 | break; |
6074 | default: | |
4d3c2250 KB |
6075 | complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'", |
6076 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6077 | break; |
6078 | } | |
63d06c5c DC |
6079 | |
6080 | processing_current_prefix = old_prefix; | |
6081 | do_cleanups (back_to); | |
6082 | } | |
6083 | ||
fdde2d81 DC |
6084 | /* Return the name of the namespace/class that DIE is defined within, |
6085 | or "" if we can't tell. The caller should xfree the result. */ | |
6086 | ||
6087 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
6088 | therein) for an example of how to use this function to deal with | |
6089 | DW_AT_specification. */ | |
6090 | ||
6091 | static char * | |
e142c38c | 6092 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
fdde2d81 | 6093 | { |
e142c38c | 6094 | char *prefix = determine_prefix_aux (die, cu); |
fdde2d81 DC |
6095 | |
6096 | return prefix ? prefix : xstrdup (""); | |
6097 | } | |
6098 | ||
63d06c5c DC |
6099 | /* Return the name of the namespace/class that DIE is defined |
6100 | within, or NULL if we can't tell. The caller should xfree the | |
6101 | result. */ | |
6102 | ||
6103 | static char * | |
e142c38c | 6104 | determine_prefix_aux (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6105 | { |
6106 | struct die_info *parent; | |
6107 | ||
e142c38c | 6108 | if (cu->language != language_cplus) |
63d06c5c DC |
6109 | return NULL; |
6110 | ||
6111 | parent = die->parent; | |
6112 | ||
6113 | if (parent == NULL) | |
6114 | { | |
6115 | return (processing_has_namespace_info ? xstrdup ("") : NULL); | |
6116 | } | |
6117 | else | |
6118 | { | |
e142c38c | 6119 | char *parent_prefix = determine_prefix_aux (parent, cu); |
63d06c5c DC |
6120 | char *retval; |
6121 | ||
6122 | switch (parent->tag) { | |
6123 | case DW_TAG_namespace: | |
6124 | { | |
6125 | int dummy; | |
6126 | ||
6127 | retval = typename_concat (parent_prefix, | |
e142c38c | 6128 | namespace_name (parent, &dummy, cu)); |
63d06c5c DC |
6129 | } |
6130 | break; | |
6131 | case DW_TAG_class_type: | |
6132 | case DW_TAG_structure_type: | |
6133 | { | |
6134 | if (parent_prefix != NULL) | |
6135 | { | |
e142c38c | 6136 | const char *parent_name = dwarf2_name (parent, cu); |
63d06c5c DC |
6137 | |
6138 | if (parent_name != NULL) | |
e142c38c | 6139 | retval = typename_concat (parent_prefix, dwarf2_name (parent, cu)); |
63d06c5c DC |
6140 | else |
6141 | /* FIXME: carlton/2003-11-10: I'm not sure what the | |
6142 | best thing to do here is. */ | |
6143 | retval = typename_concat (parent_prefix, | |
6144 | "<<anonymous class>>"); | |
6145 | } | |
6146 | else | |
e142c38c | 6147 | retval = class_name (parent, cu); |
63d06c5c DC |
6148 | } |
6149 | break; | |
6150 | default: | |
6151 | retval = parent_prefix; | |
6152 | break; | |
6153 | } | |
6154 | ||
6155 | if (retval != parent_prefix) | |
6156 | xfree (parent_prefix); | |
6157 | return retval; | |
6158 | } | |
6159 | } | |
6160 | ||
6161 | /* Return a newly-allocated string formed by concatenating PREFIX, | |
6162 | "::", and SUFFIX, except that if PREFIX is NULL or the empty | |
6163 | string, just return a copy of SUFFIX. */ | |
6164 | ||
6165 | static char * | |
6166 | typename_concat (const char *prefix, const char *suffix) | |
6167 | { | |
6168 | if (prefix == NULL || prefix[0] == '\0') | |
6169 | return xstrdup (suffix); | |
6170 | else | |
6171 | { | |
6172 | char *retval = xmalloc (strlen (prefix) + 2 + strlen (suffix) + 1); | |
6173 | ||
6174 | strcpy (retval, prefix); | |
6175 | strcat (retval, "::"); | |
6176 | strcat (retval, suffix); | |
6177 | ||
6178 | return retval; | |
6179 | } | |
6180 | } | |
6181 | ||
6182 | /* Return a newly-allocated string giving the name of the class given | |
6183 | by DIE. */ | |
6184 | ||
6185 | static char * | |
e142c38c | 6186 | class_name (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6187 | { |
6188 | struct die_info *child; | |
6189 | const char *name; | |
6190 | ||
6191 | for (child = die->child; child != NULL; child = sibling_die (child)) | |
6192 | { | |
6193 | if (child->tag == DW_TAG_subprogram) | |
e142c38c | 6194 | return class_name_from_physname (dwarf2_linkage_name (child, cu)); |
63d06c5c DC |
6195 | } |
6196 | ||
e142c38c | 6197 | name = dwarf2_name (die, cu); |
63d06c5c DC |
6198 | if (name != NULL) |
6199 | return xstrdup (name); | |
6200 | else | |
6201 | return xstrdup (""); | |
c906108c SS |
6202 | } |
6203 | ||
6204 | static struct type * | |
e7c27a73 | 6205 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 6206 | { |
e7c27a73 DJ |
6207 | struct objfile *objfile = cu->objfile; |
6208 | ||
c906108c SS |
6209 | /* FIXME - this should not produce a new (struct type *) |
6210 | every time. It should cache base types. */ | |
6211 | struct type *type; | |
6212 | switch (encoding) | |
6213 | { | |
6214 | case DW_ATE_address: | |
e142c38c | 6215 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
6216 | return type; |
6217 | case DW_ATE_boolean: | |
e142c38c | 6218 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
6219 | return type; |
6220 | case DW_ATE_complex_float: | |
6221 | if (size == 16) | |
6222 | { | |
e142c38c | 6223 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
6224 | } |
6225 | else | |
6226 | { | |
e142c38c | 6227 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
6228 | } |
6229 | return type; | |
6230 | case DW_ATE_float: | |
6231 | if (size == 8) | |
6232 | { | |
e142c38c | 6233 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
6234 | } |
6235 | else | |
6236 | { | |
e142c38c | 6237 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
6238 | } |
6239 | return type; | |
6240 | case DW_ATE_signed: | |
6241 | switch (size) | |
6242 | { | |
6243 | case 1: | |
e142c38c | 6244 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6245 | break; |
6246 | case 2: | |
e142c38c | 6247 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
6248 | break; |
6249 | default: | |
6250 | case 4: | |
e142c38c | 6251 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6252 | break; |
6253 | } | |
6254 | return type; | |
6255 | case DW_ATE_signed_char: | |
e142c38c | 6256 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6257 | return type; |
6258 | case DW_ATE_unsigned: | |
6259 | switch (size) | |
6260 | { | |
6261 | case 1: | |
e142c38c | 6262 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6263 | break; |
6264 | case 2: | |
e142c38c | 6265 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
6266 | break; |
6267 | default: | |
6268 | case 4: | |
e142c38c | 6269 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
6270 | break; |
6271 | } | |
6272 | return type; | |
6273 | case DW_ATE_unsigned_char: | |
e142c38c | 6274 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6275 | return type; |
6276 | default: | |
e142c38c | 6277 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6278 | return type; |
6279 | } | |
6280 | } | |
6281 | ||
6282 | #if 0 | |
6283 | struct die_info * | |
fba45db2 | 6284 | copy_die (struct die_info *old_die) |
c906108c SS |
6285 | { |
6286 | struct die_info *new_die; | |
6287 | int i, num_attrs; | |
6288 | ||
6289 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
6290 | memset (new_die, 0, sizeof (struct die_info)); | |
6291 | ||
6292 | new_die->tag = old_die->tag; | |
6293 | new_die->has_children = old_die->has_children; | |
6294 | new_die->abbrev = old_die->abbrev; | |
6295 | new_die->offset = old_die->offset; | |
6296 | new_die->type = NULL; | |
6297 | ||
6298 | num_attrs = old_die->num_attrs; | |
6299 | new_die->num_attrs = num_attrs; | |
6300 | new_die->attrs = (struct attribute *) | |
6301 | xmalloc (num_attrs * sizeof (struct attribute)); | |
6302 | ||
6303 | for (i = 0; i < old_die->num_attrs; ++i) | |
6304 | { | |
6305 | new_die->attrs[i].name = old_die->attrs[i].name; | |
6306 | new_die->attrs[i].form = old_die->attrs[i].form; | |
6307 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
6308 | } | |
6309 | ||
6310 | new_die->next = NULL; | |
6311 | return new_die; | |
6312 | } | |
6313 | #endif | |
6314 | ||
6315 | /* Return sibling of die, NULL if no sibling. */ | |
6316 | ||
f9aca02d | 6317 | static struct die_info * |
fba45db2 | 6318 | sibling_die (struct die_info *die) |
c906108c | 6319 | { |
639d11d3 | 6320 | return die->sibling; |
c906108c SS |
6321 | } |
6322 | ||
6323 | /* Get linkage name of a die, return NULL if not found. */ | |
6324 | ||
6325 | static char * | |
e142c38c | 6326 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6327 | { |
6328 | struct attribute *attr; | |
6329 | ||
e142c38c | 6330 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
6331 | if (attr && DW_STRING (attr)) |
6332 | return DW_STRING (attr); | |
e142c38c | 6333 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
6334 | if (attr && DW_STRING (attr)) |
6335 | return DW_STRING (attr); | |
6336 | return NULL; | |
6337 | } | |
6338 | ||
9219021c DC |
6339 | /* Get name of a die, return NULL if not found. */ |
6340 | ||
6341 | static char * | |
e142c38c | 6342 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6343 | { |
6344 | struct attribute *attr; | |
6345 | ||
e142c38c | 6346 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
6347 | if (attr && DW_STRING (attr)) |
6348 | return DW_STRING (attr); | |
6349 | return NULL; | |
6350 | } | |
6351 | ||
6352 | /* Return the die that this die in an extension of, or NULL if there | |
6353 | is none. */ | |
6354 | ||
6355 | static struct die_info * | |
e142c38c | 6356 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6357 | { |
6358 | struct attribute *attr; | |
6359 | struct die_info *extension_die; | |
6360 | unsigned int ref; | |
6361 | ||
e142c38c | 6362 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
6363 | if (attr == NULL) |
6364 | return NULL; | |
6365 | ||
e142c38c | 6366 | ref = dwarf2_get_ref_die_offset (attr, cu); |
9219021c DC |
6367 | extension_die = follow_die_ref (ref); |
6368 | if (!extension_die) | |
6369 | { | |
6370 | error ("Dwarf Error: Cannot find referent at offset %d.", ref); | |
6371 | } | |
6372 | ||
6373 | return extension_die; | |
6374 | } | |
6375 | ||
c906108c SS |
6376 | /* Convert a DIE tag into its string name. */ |
6377 | ||
6378 | static char * | |
aa1ee363 | 6379 | dwarf_tag_name (unsigned tag) |
c906108c SS |
6380 | { |
6381 | switch (tag) | |
6382 | { | |
6383 | case DW_TAG_padding: | |
6384 | return "DW_TAG_padding"; | |
6385 | case DW_TAG_array_type: | |
6386 | return "DW_TAG_array_type"; | |
6387 | case DW_TAG_class_type: | |
6388 | return "DW_TAG_class_type"; | |
6389 | case DW_TAG_entry_point: | |
6390 | return "DW_TAG_entry_point"; | |
6391 | case DW_TAG_enumeration_type: | |
6392 | return "DW_TAG_enumeration_type"; | |
6393 | case DW_TAG_formal_parameter: | |
6394 | return "DW_TAG_formal_parameter"; | |
6395 | case DW_TAG_imported_declaration: | |
6396 | return "DW_TAG_imported_declaration"; | |
6397 | case DW_TAG_label: | |
6398 | return "DW_TAG_label"; | |
6399 | case DW_TAG_lexical_block: | |
6400 | return "DW_TAG_lexical_block"; | |
6401 | case DW_TAG_member: | |
6402 | return "DW_TAG_member"; | |
6403 | case DW_TAG_pointer_type: | |
6404 | return "DW_TAG_pointer_type"; | |
6405 | case DW_TAG_reference_type: | |
6406 | return "DW_TAG_reference_type"; | |
6407 | case DW_TAG_compile_unit: | |
6408 | return "DW_TAG_compile_unit"; | |
6409 | case DW_TAG_string_type: | |
6410 | return "DW_TAG_string_type"; | |
6411 | case DW_TAG_structure_type: | |
6412 | return "DW_TAG_structure_type"; | |
6413 | case DW_TAG_subroutine_type: | |
6414 | return "DW_TAG_subroutine_type"; | |
6415 | case DW_TAG_typedef: | |
6416 | return "DW_TAG_typedef"; | |
6417 | case DW_TAG_union_type: | |
6418 | return "DW_TAG_union_type"; | |
6419 | case DW_TAG_unspecified_parameters: | |
6420 | return "DW_TAG_unspecified_parameters"; | |
6421 | case DW_TAG_variant: | |
6422 | return "DW_TAG_variant"; | |
6423 | case DW_TAG_common_block: | |
6424 | return "DW_TAG_common_block"; | |
6425 | case DW_TAG_common_inclusion: | |
6426 | return "DW_TAG_common_inclusion"; | |
6427 | case DW_TAG_inheritance: | |
6428 | return "DW_TAG_inheritance"; | |
6429 | case DW_TAG_inlined_subroutine: | |
6430 | return "DW_TAG_inlined_subroutine"; | |
6431 | case DW_TAG_module: | |
6432 | return "DW_TAG_module"; | |
6433 | case DW_TAG_ptr_to_member_type: | |
6434 | return "DW_TAG_ptr_to_member_type"; | |
6435 | case DW_TAG_set_type: | |
6436 | return "DW_TAG_set_type"; | |
6437 | case DW_TAG_subrange_type: | |
6438 | return "DW_TAG_subrange_type"; | |
6439 | case DW_TAG_with_stmt: | |
6440 | return "DW_TAG_with_stmt"; | |
6441 | case DW_TAG_access_declaration: | |
6442 | return "DW_TAG_access_declaration"; | |
6443 | case DW_TAG_base_type: | |
6444 | return "DW_TAG_base_type"; | |
6445 | case DW_TAG_catch_block: | |
6446 | return "DW_TAG_catch_block"; | |
6447 | case DW_TAG_const_type: | |
6448 | return "DW_TAG_const_type"; | |
6449 | case DW_TAG_constant: | |
6450 | return "DW_TAG_constant"; | |
6451 | case DW_TAG_enumerator: | |
6452 | return "DW_TAG_enumerator"; | |
6453 | case DW_TAG_file_type: | |
6454 | return "DW_TAG_file_type"; | |
6455 | case DW_TAG_friend: | |
6456 | return "DW_TAG_friend"; | |
6457 | case DW_TAG_namelist: | |
6458 | return "DW_TAG_namelist"; | |
6459 | case DW_TAG_namelist_item: | |
6460 | return "DW_TAG_namelist_item"; | |
6461 | case DW_TAG_packed_type: | |
6462 | return "DW_TAG_packed_type"; | |
6463 | case DW_TAG_subprogram: | |
6464 | return "DW_TAG_subprogram"; | |
6465 | case DW_TAG_template_type_param: | |
6466 | return "DW_TAG_template_type_param"; | |
6467 | case DW_TAG_template_value_param: | |
6468 | return "DW_TAG_template_value_param"; | |
6469 | case DW_TAG_thrown_type: | |
6470 | return "DW_TAG_thrown_type"; | |
6471 | case DW_TAG_try_block: | |
6472 | return "DW_TAG_try_block"; | |
6473 | case DW_TAG_variant_part: | |
6474 | return "DW_TAG_variant_part"; | |
6475 | case DW_TAG_variable: | |
6476 | return "DW_TAG_variable"; | |
6477 | case DW_TAG_volatile_type: | |
6478 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
6479 | case DW_TAG_dwarf_procedure: |
6480 | return "DW_TAG_dwarf_procedure"; | |
6481 | case DW_TAG_restrict_type: | |
6482 | return "DW_TAG_restrict_type"; | |
6483 | case DW_TAG_interface_type: | |
6484 | return "DW_TAG_interface_type"; | |
6485 | case DW_TAG_namespace: | |
6486 | return "DW_TAG_namespace"; | |
6487 | case DW_TAG_imported_module: | |
6488 | return "DW_TAG_imported_module"; | |
6489 | case DW_TAG_unspecified_type: | |
6490 | return "DW_TAG_unspecified_type"; | |
6491 | case DW_TAG_partial_unit: | |
6492 | return "DW_TAG_partial_unit"; | |
6493 | case DW_TAG_imported_unit: | |
6494 | return "DW_TAG_imported_unit"; | |
c906108c SS |
6495 | case DW_TAG_MIPS_loop: |
6496 | return "DW_TAG_MIPS_loop"; | |
6497 | case DW_TAG_format_label: | |
6498 | return "DW_TAG_format_label"; | |
6499 | case DW_TAG_function_template: | |
6500 | return "DW_TAG_function_template"; | |
6501 | case DW_TAG_class_template: | |
6502 | return "DW_TAG_class_template"; | |
6503 | default: | |
6504 | return "DW_TAG_<unknown>"; | |
6505 | } | |
6506 | } | |
6507 | ||
6508 | /* Convert a DWARF attribute code into its string name. */ | |
6509 | ||
6510 | static char * | |
aa1ee363 | 6511 | dwarf_attr_name (unsigned attr) |
c906108c SS |
6512 | { |
6513 | switch (attr) | |
6514 | { | |
6515 | case DW_AT_sibling: | |
6516 | return "DW_AT_sibling"; | |
6517 | case DW_AT_location: | |
6518 | return "DW_AT_location"; | |
6519 | case DW_AT_name: | |
6520 | return "DW_AT_name"; | |
6521 | case DW_AT_ordering: | |
6522 | return "DW_AT_ordering"; | |
6523 | case DW_AT_subscr_data: | |
6524 | return "DW_AT_subscr_data"; | |
6525 | case DW_AT_byte_size: | |
6526 | return "DW_AT_byte_size"; | |
6527 | case DW_AT_bit_offset: | |
6528 | return "DW_AT_bit_offset"; | |
6529 | case DW_AT_bit_size: | |
6530 | return "DW_AT_bit_size"; | |
6531 | case DW_AT_element_list: | |
6532 | return "DW_AT_element_list"; | |
6533 | case DW_AT_stmt_list: | |
6534 | return "DW_AT_stmt_list"; | |
6535 | case DW_AT_low_pc: | |
6536 | return "DW_AT_low_pc"; | |
6537 | case DW_AT_high_pc: | |
6538 | return "DW_AT_high_pc"; | |
6539 | case DW_AT_language: | |
6540 | return "DW_AT_language"; | |
6541 | case DW_AT_member: | |
6542 | return "DW_AT_member"; | |
6543 | case DW_AT_discr: | |
6544 | return "DW_AT_discr"; | |
6545 | case DW_AT_discr_value: | |
6546 | return "DW_AT_discr_value"; | |
6547 | case DW_AT_visibility: | |
6548 | return "DW_AT_visibility"; | |
6549 | case DW_AT_import: | |
6550 | return "DW_AT_import"; | |
6551 | case DW_AT_string_length: | |
6552 | return "DW_AT_string_length"; | |
6553 | case DW_AT_common_reference: | |
6554 | return "DW_AT_common_reference"; | |
6555 | case DW_AT_comp_dir: | |
6556 | return "DW_AT_comp_dir"; | |
6557 | case DW_AT_const_value: | |
6558 | return "DW_AT_const_value"; | |
6559 | case DW_AT_containing_type: | |
6560 | return "DW_AT_containing_type"; | |
6561 | case DW_AT_default_value: | |
6562 | return "DW_AT_default_value"; | |
6563 | case DW_AT_inline: | |
6564 | return "DW_AT_inline"; | |
6565 | case DW_AT_is_optional: | |
6566 | return "DW_AT_is_optional"; | |
6567 | case DW_AT_lower_bound: | |
6568 | return "DW_AT_lower_bound"; | |
6569 | case DW_AT_producer: | |
6570 | return "DW_AT_producer"; | |
6571 | case DW_AT_prototyped: | |
6572 | return "DW_AT_prototyped"; | |
6573 | case DW_AT_return_addr: | |
6574 | return "DW_AT_return_addr"; | |
6575 | case DW_AT_start_scope: | |
6576 | return "DW_AT_start_scope"; | |
6577 | case DW_AT_stride_size: | |
6578 | return "DW_AT_stride_size"; | |
6579 | case DW_AT_upper_bound: | |
6580 | return "DW_AT_upper_bound"; | |
6581 | case DW_AT_abstract_origin: | |
6582 | return "DW_AT_abstract_origin"; | |
6583 | case DW_AT_accessibility: | |
6584 | return "DW_AT_accessibility"; | |
6585 | case DW_AT_address_class: | |
6586 | return "DW_AT_address_class"; | |
6587 | case DW_AT_artificial: | |
6588 | return "DW_AT_artificial"; | |
6589 | case DW_AT_base_types: | |
6590 | return "DW_AT_base_types"; | |
6591 | case DW_AT_calling_convention: | |
6592 | return "DW_AT_calling_convention"; | |
6593 | case DW_AT_count: | |
6594 | return "DW_AT_count"; | |
6595 | case DW_AT_data_member_location: | |
6596 | return "DW_AT_data_member_location"; | |
6597 | case DW_AT_decl_column: | |
6598 | return "DW_AT_decl_column"; | |
6599 | case DW_AT_decl_file: | |
6600 | return "DW_AT_decl_file"; | |
6601 | case DW_AT_decl_line: | |
6602 | return "DW_AT_decl_line"; | |
6603 | case DW_AT_declaration: | |
6604 | return "DW_AT_declaration"; | |
6605 | case DW_AT_discr_list: | |
6606 | return "DW_AT_discr_list"; | |
6607 | case DW_AT_encoding: | |
6608 | return "DW_AT_encoding"; | |
6609 | case DW_AT_external: | |
6610 | return "DW_AT_external"; | |
6611 | case DW_AT_frame_base: | |
6612 | return "DW_AT_frame_base"; | |
6613 | case DW_AT_friend: | |
6614 | return "DW_AT_friend"; | |
6615 | case DW_AT_identifier_case: | |
6616 | return "DW_AT_identifier_case"; | |
6617 | case DW_AT_macro_info: | |
6618 | return "DW_AT_macro_info"; | |
6619 | case DW_AT_namelist_items: | |
6620 | return "DW_AT_namelist_items"; | |
6621 | case DW_AT_priority: | |
6622 | return "DW_AT_priority"; | |
6623 | case DW_AT_segment: | |
6624 | return "DW_AT_segment"; | |
6625 | case DW_AT_specification: | |
6626 | return "DW_AT_specification"; | |
6627 | case DW_AT_static_link: | |
6628 | return "DW_AT_static_link"; | |
6629 | case DW_AT_type: | |
6630 | return "DW_AT_type"; | |
6631 | case DW_AT_use_location: | |
6632 | return "DW_AT_use_location"; | |
6633 | case DW_AT_variable_parameter: | |
6634 | return "DW_AT_variable_parameter"; | |
6635 | case DW_AT_virtuality: | |
6636 | return "DW_AT_virtuality"; | |
6637 | case DW_AT_vtable_elem_location: | |
6638 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
6639 | case DW_AT_allocated: |
6640 | return "DW_AT_allocated"; | |
6641 | case DW_AT_associated: | |
6642 | return "DW_AT_associated"; | |
6643 | case DW_AT_data_location: | |
6644 | return "DW_AT_data_location"; | |
6645 | case DW_AT_stride: | |
6646 | return "DW_AT_stride"; | |
6647 | case DW_AT_entry_pc: | |
6648 | return "DW_AT_entry_pc"; | |
6649 | case DW_AT_use_UTF8: | |
6650 | return "DW_AT_use_UTF8"; | |
6651 | case DW_AT_extension: | |
6652 | return "DW_AT_extension"; | |
6653 | case DW_AT_ranges: | |
6654 | return "DW_AT_ranges"; | |
6655 | case DW_AT_trampoline: | |
6656 | return "DW_AT_trampoline"; | |
6657 | case DW_AT_call_column: | |
6658 | return "DW_AT_call_column"; | |
6659 | case DW_AT_call_file: | |
6660 | return "DW_AT_call_file"; | |
6661 | case DW_AT_call_line: | |
6662 | return "DW_AT_call_line"; | |
c906108c SS |
6663 | #ifdef MIPS |
6664 | case DW_AT_MIPS_fde: | |
6665 | return "DW_AT_MIPS_fde"; | |
6666 | case DW_AT_MIPS_loop_begin: | |
6667 | return "DW_AT_MIPS_loop_begin"; | |
6668 | case DW_AT_MIPS_tail_loop_begin: | |
6669 | return "DW_AT_MIPS_tail_loop_begin"; | |
6670 | case DW_AT_MIPS_epilog_begin: | |
6671 | return "DW_AT_MIPS_epilog_begin"; | |
6672 | case DW_AT_MIPS_loop_unroll_factor: | |
6673 | return "DW_AT_MIPS_loop_unroll_factor"; | |
6674 | case DW_AT_MIPS_software_pipeline_depth: | |
6675 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 6676 | #endif |
c906108c SS |
6677 | case DW_AT_MIPS_linkage_name: |
6678 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
6679 | |
6680 | case DW_AT_sf_names: | |
6681 | return "DW_AT_sf_names"; | |
6682 | case DW_AT_src_info: | |
6683 | return "DW_AT_src_info"; | |
6684 | case DW_AT_mac_info: | |
6685 | return "DW_AT_mac_info"; | |
6686 | case DW_AT_src_coords: | |
6687 | return "DW_AT_src_coords"; | |
6688 | case DW_AT_body_begin: | |
6689 | return "DW_AT_body_begin"; | |
6690 | case DW_AT_body_end: | |
6691 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
6692 | case DW_AT_GNU_vector: |
6693 | return "DW_AT_GNU_vector"; | |
c906108c SS |
6694 | default: |
6695 | return "DW_AT_<unknown>"; | |
6696 | } | |
6697 | } | |
6698 | ||
6699 | /* Convert a DWARF value form code into its string name. */ | |
6700 | ||
6701 | static char * | |
aa1ee363 | 6702 | dwarf_form_name (unsigned form) |
c906108c SS |
6703 | { |
6704 | switch (form) | |
6705 | { | |
6706 | case DW_FORM_addr: | |
6707 | return "DW_FORM_addr"; | |
6708 | case DW_FORM_block2: | |
6709 | return "DW_FORM_block2"; | |
6710 | case DW_FORM_block4: | |
6711 | return "DW_FORM_block4"; | |
6712 | case DW_FORM_data2: | |
6713 | return "DW_FORM_data2"; | |
6714 | case DW_FORM_data4: | |
6715 | return "DW_FORM_data4"; | |
6716 | case DW_FORM_data8: | |
6717 | return "DW_FORM_data8"; | |
6718 | case DW_FORM_string: | |
6719 | return "DW_FORM_string"; | |
6720 | case DW_FORM_block: | |
6721 | return "DW_FORM_block"; | |
6722 | case DW_FORM_block1: | |
6723 | return "DW_FORM_block1"; | |
6724 | case DW_FORM_data1: | |
6725 | return "DW_FORM_data1"; | |
6726 | case DW_FORM_flag: | |
6727 | return "DW_FORM_flag"; | |
6728 | case DW_FORM_sdata: | |
6729 | return "DW_FORM_sdata"; | |
6730 | case DW_FORM_strp: | |
6731 | return "DW_FORM_strp"; | |
6732 | case DW_FORM_udata: | |
6733 | return "DW_FORM_udata"; | |
6734 | case DW_FORM_ref_addr: | |
6735 | return "DW_FORM_ref_addr"; | |
6736 | case DW_FORM_ref1: | |
6737 | return "DW_FORM_ref1"; | |
6738 | case DW_FORM_ref2: | |
6739 | return "DW_FORM_ref2"; | |
6740 | case DW_FORM_ref4: | |
6741 | return "DW_FORM_ref4"; | |
6742 | case DW_FORM_ref8: | |
6743 | return "DW_FORM_ref8"; | |
6744 | case DW_FORM_ref_udata: | |
6745 | return "DW_FORM_ref_udata"; | |
6746 | case DW_FORM_indirect: | |
6747 | return "DW_FORM_indirect"; | |
6748 | default: | |
6749 | return "DW_FORM_<unknown>"; | |
6750 | } | |
6751 | } | |
6752 | ||
6753 | /* Convert a DWARF stack opcode into its string name. */ | |
6754 | ||
6755 | static char * | |
aa1ee363 | 6756 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
6757 | { |
6758 | switch (op) | |
6759 | { | |
6760 | case DW_OP_addr: | |
6761 | return "DW_OP_addr"; | |
6762 | case DW_OP_deref: | |
6763 | return "DW_OP_deref"; | |
6764 | case DW_OP_const1u: | |
6765 | return "DW_OP_const1u"; | |
6766 | case DW_OP_const1s: | |
6767 | return "DW_OP_const1s"; | |
6768 | case DW_OP_const2u: | |
6769 | return "DW_OP_const2u"; | |
6770 | case DW_OP_const2s: | |
6771 | return "DW_OP_const2s"; | |
6772 | case DW_OP_const4u: | |
6773 | return "DW_OP_const4u"; | |
6774 | case DW_OP_const4s: | |
6775 | return "DW_OP_const4s"; | |
6776 | case DW_OP_const8u: | |
6777 | return "DW_OP_const8u"; | |
6778 | case DW_OP_const8s: | |
6779 | return "DW_OP_const8s"; | |
6780 | case DW_OP_constu: | |
6781 | return "DW_OP_constu"; | |
6782 | case DW_OP_consts: | |
6783 | return "DW_OP_consts"; | |
6784 | case DW_OP_dup: | |
6785 | return "DW_OP_dup"; | |
6786 | case DW_OP_drop: | |
6787 | return "DW_OP_drop"; | |
6788 | case DW_OP_over: | |
6789 | return "DW_OP_over"; | |
6790 | case DW_OP_pick: | |
6791 | return "DW_OP_pick"; | |
6792 | case DW_OP_swap: | |
6793 | return "DW_OP_swap"; | |
6794 | case DW_OP_rot: | |
6795 | return "DW_OP_rot"; | |
6796 | case DW_OP_xderef: | |
6797 | return "DW_OP_xderef"; | |
6798 | case DW_OP_abs: | |
6799 | return "DW_OP_abs"; | |
6800 | case DW_OP_and: | |
6801 | return "DW_OP_and"; | |
6802 | case DW_OP_div: | |
6803 | return "DW_OP_div"; | |
6804 | case DW_OP_minus: | |
6805 | return "DW_OP_minus"; | |
6806 | case DW_OP_mod: | |
6807 | return "DW_OP_mod"; | |
6808 | case DW_OP_mul: | |
6809 | return "DW_OP_mul"; | |
6810 | case DW_OP_neg: | |
6811 | return "DW_OP_neg"; | |
6812 | case DW_OP_not: | |
6813 | return "DW_OP_not"; | |
6814 | case DW_OP_or: | |
6815 | return "DW_OP_or"; | |
6816 | case DW_OP_plus: | |
6817 | return "DW_OP_plus"; | |
6818 | case DW_OP_plus_uconst: | |
6819 | return "DW_OP_plus_uconst"; | |
6820 | case DW_OP_shl: | |
6821 | return "DW_OP_shl"; | |
6822 | case DW_OP_shr: | |
6823 | return "DW_OP_shr"; | |
6824 | case DW_OP_shra: | |
6825 | return "DW_OP_shra"; | |
6826 | case DW_OP_xor: | |
6827 | return "DW_OP_xor"; | |
6828 | case DW_OP_bra: | |
6829 | return "DW_OP_bra"; | |
6830 | case DW_OP_eq: | |
6831 | return "DW_OP_eq"; | |
6832 | case DW_OP_ge: | |
6833 | return "DW_OP_ge"; | |
6834 | case DW_OP_gt: | |
6835 | return "DW_OP_gt"; | |
6836 | case DW_OP_le: | |
6837 | return "DW_OP_le"; | |
6838 | case DW_OP_lt: | |
6839 | return "DW_OP_lt"; | |
6840 | case DW_OP_ne: | |
6841 | return "DW_OP_ne"; | |
6842 | case DW_OP_skip: | |
6843 | return "DW_OP_skip"; | |
6844 | case DW_OP_lit0: | |
6845 | return "DW_OP_lit0"; | |
6846 | case DW_OP_lit1: | |
6847 | return "DW_OP_lit1"; | |
6848 | case DW_OP_lit2: | |
6849 | return "DW_OP_lit2"; | |
6850 | case DW_OP_lit3: | |
6851 | return "DW_OP_lit3"; | |
6852 | case DW_OP_lit4: | |
6853 | return "DW_OP_lit4"; | |
6854 | case DW_OP_lit5: | |
6855 | return "DW_OP_lit5"; | |
6856 | case DW_OP_lit6: | |
6857 | return "DW_OP_lit6"; | |
6858 | case DW_OP_lit7: | |
6859 | return "DW_OP_lit7"; | |
6860 | case DW_OP_lit8: | |
6861 | return "DW_OP_lit8"; | |
6862 | case DW_OP_lit9: | |
6863 | return "DW_OP_lit9"; | |
6864 | case DW_OP_lit10: | |
6865 | return "DW_OP_lit10"; | |
6866 | case DW_OP_lit11: | |
6867 | return "DW_OP_lit11"; | |
6868 | case DW_OP_lit12: | |
6869 | return "DW_OP_lit12"; | |
6870 | case DW_OP_lit13: | |
6871 | return "DW_OP_lit13"; | |
6872 | case DW_OP_lit14: | |
6873 | return "DW_OP_lit14"; | |
6874 | case DW_OP_lit15: | |
6875 | return "DW_OP_lit15"; | |
6876 | case DW_OP_lit16: | |
6877 | return "DW_OP_lit16"; | |
6878 | case DW_OP_lit17: | |
6879 | return "DW_OP_lit17"; | |
6880 | case DW_OP_lit18: | |
6881 | return "DW_OP_lit18"; | |
6882 | case DW_OP_lit19: | |
6883 | return "DW_OP_lit19"; | |
6884 | case DW_OP_lit20: | |
6885 | return "DW_OP_lit20"; | |
6886 | case DW_OP_lit21: | |
6887 | return "DW_OP_lit21"; | |
6888 | case DW_OP_lit22: | |
6889 | return "DW_OP_lit22"; | |
6890 | case DW_OP_lit23: | |
6891 | return "DW_OP_lit23"; | |
6892 | case DW_OP_lit24: | |
6893 | return "DW_OP_lit24"; | |
6894 | case DW_OP_lit25: | |
6895 | return "DW_OP_lit25"; | |
6896 | case DW_OP_lit26: | |
6897 | return "DW_OP_lit26"; | |
6898 | case DW_OP_lit27: | |
6899 | return "DW_OP_lit27"; | |
6900 | case DW_OP_lit28: | |
6901 | return "DW_OP_lit28"; | |
6902 | case DW_OP_lit29: | |
6903 | return "DW_OP_lit29"; | |
6904 | case DW_OP_lit30: | |
6905 | return "DW_OP_lit30"; | |
6906 | case DW_OP_lit31: | |
6907 | return "DW_OP_lit31"; | |
6908 | case DW_OP_reg0: | |
6909 | return "DW_OP_reg0"; | |
6910 | case DW_OP_reg1: | |
6911 | return "DW_OP_reg1"; | |
6912 | case DW_OP_reg2: | |
6913 | return "DW_OP_reg2"; | |
6914 | case DW_OP_reg3: | |
6915 | return "DW_OP_reg3"; | |
6916 | case DW_OP_reg4: | |
6917 | return "DW_OP_reg4"; | |
6918 | case DW_OP_reg5: | |
6919 | return "DW_OP_reg5"; | |
6920 | case DW_OP_reg6: | |
6921 | return "DW_OP_reg6"; | |
6922 | case DW_OP_reg7: | |
6923 | return "DW_OP_reg7"; | |
6924 | case DW_OP_reg8: | |
6925 | return "DW_OP_reg8"; | |
6926 | case DW_OP_reg9: | |
6927 | return "DW_OP_reg9"; | |
6928 | case DW_OP_reg10: | |
6929 | return "DW_OP_reg10"; | |
6930 | case DW_OP_reg11: | |
6931 | return "DW_OP_reg11"; | |
6932 | case DW_OP_reg12: | |
6933 | return "DW_OP_reg12"; | |
6934 | case DW_OP_reg13: | |
6935 | return "DW_OP_reg13"; | |
6936 | case DW_OP_reg14: | |
6937 | return "DW_OP_reg14"; | |
6938 | case DW_OP_reg15: | |
6939 | return "DW_OP_reg15"; | |
6940 | case DW_OP_reg16: | |
6941 | return "DW_OP_reg16"; | |
6942 | case DW_OP_reg17: | |
6943 | return "DW_OP_reg17"; | |
6944 | case DW_OP_reg18: | |
6945 | return "DW_OP_reg18"; | |
6946 | case DW_OP_reg19: | |
6947 | return "DW_OP_reg19"; | |
6948 | case DW_OP_reg20: | |
6949 | return "DW_OP_reg20"; | |
6950 | case DW_OP_reg21: | |
6951 | return "DW_OP_reg21"; | |
6952 | case DW_OP_reg22: | |
6953 | return "DW_OP_reg22"; | |
6954 | case DW_OP_reg23: | |
6955 | return "DW_OP_reg23"; | |
6956 | case DW_OP_reg24: | |
6957 | return "DW_OP_reg24"; | |
6958 | case DW_OP_reg25: | |
6959 | return "DW_OP_reg25"; | |
6960 | case DW_OP_reg26: | |
6961 | return "DW_OP_reg26"; | |
6962 | case DW_OP_reg27: | |
6963 | return "DW_OP_reg27"; | |
6964 | case DW_OP_reg28: | |
6965 | return "DW_OP_reg28"; | |
6966 | case DW_OP_reg29: | |
6967 | return "DW_OP_reg29"; | |
6968 | case DW_OP_reg30: | |
6969 | return "DW_OP_reg30"; | |
6970 | case DW_OP_reg31: | |
6971 | return "DW_OP_reg31"; | |
6972 | case DW_OP_breg0: | |
6973 | return "DW_OP_breg0"; | |
6974 | case DW_OP_breg1: | |
6975 | return "DW_OP_breg1"; | |
6976 | case DW_OP_breg2: | |
6977 | return "DW_OP_breg2"; | |
6978 | case DW_OP_breg3: | |
6979 | return "DW_OP_breg3"; | |
6980 | case DW_OP_breg4: | |
6981 | return "DW_OP_breg4"; | |
6982 | case DW_OP_breg5: | |
6983 | return "DW_OP_breg5"; | |
6984 | case DW_OP_breg6: | |
6985 | return "DW_OP_breg6"; | |
6986 | case DW_OP_breg7: | |
6987 | return "DW_OP_breg7"; | |
6988 | case DW_OP_breg8: | |
6989 | return "DW_OP_breg8"; | |
6990 | case DW_OP_breg9: | |
6991 | return "DW_OP_breg9"; | |
6992 | case DW_OP_breg10: | |
6993 | return "DW_OP_breg10"; | |
6994 | case DW_OP_breg11: | |
6995 | return "DW_OP_breg11"; | |
6996 | case DW_OP_breg12: | |
6997 | return "DW_OP_breg12"; | |
6998 | case DW_OP_breg13: | |
6999 | return "DW_OP_breg13"; | |
7000 | case DW_OP_breg14: | |
7001 | return "DW_OP_breg14"; | |
7002 | case DW_OP_breg15: | |
7003 | return "DW_OP_breg15"; | |
7004 | case DW_OP_breg16: | |
7005 | return "DW_OP_breg16"; | |
7006 | case DW_OP_breg17: | |
7007 | return "DW_OP_breg17"; | |
7008 | case DW_OP_breg18: | |
7009 | return "DW_OP_breg18"; | |
7010 | case DW_OP_breg19: | |
7011 | return "DW_OP_breg19"; | |
7012 | case DW_OP_breg20: | |
7013 | return "DW_OP_breg20"; | |
7014 | case DW_OP_breg21: | |
7015 | return "DW_OP_breg21"; | |
7016 | case DW_OP_breg22: | |
7017 | return "DW_OP_breg22"; | |
7018 | case DW_OP_breg23: | |
7019 | return "DW_OP_breg23"; | |
7020 | case DW_OP_breg24: | |
7021 | return "DW_OP_breg24"; | |
7022 | case DW_OP_breg25: | |
7023 | return "DW_OP_breg25"; | |
7024 | case DW_OP_breg26: | |
7025 | return "DW_OP_breg26"; | |
7026 | case DW_OP_breg27: | |
7027 | return "DW_OP_breg27"; | |
7028 | case DW_OP_breg28: | |
7029 | return "DW_OP_breg28"; | |
7030 | case DW_OP_breg29: | |
7031 | return "DW_OP_breg29"; | |
7032 | case DW_OP_breg30: | |
7033 | return "DW_OP_breg30"; | |
7034 | case DW_OP_breg31: | |
7035 | return "DW_OP_breg31"; | |
7036 | case DW_OP_regx: | |
7037 | return "DW_OP_regx"; | |
7038 | case DW_OP_fbreg: | |
7039 | return "DW_OP_fbreg"; | |
7040 | case DW_OP_bregx: | |
7041 | return "DW_OP_bregx"; | |
7042 | case DW_OP_piece: | |
7043 | return "DW_OP_piece"; | |
7044 | case DW_OP_deref_size: | |
7045 | return "DW_OP_deref_size"; | |
7046 | case DW_OP_xderef_size: | |
7047 | return "DW_OP_xderef_size"; | |
7048 | case DW_OP_nop: | |
7049 | return "DW_OP_nop"; | |
ed348acc EZ |
7050 | /* DWARF 3 extensions. */ |
7051 | case DW_OP_push_object_address: | |
7052 | return "DW_OP_push_object_address"; | |
7053 | case DW_OP_call2: | |
7054 | return "DW_OP_call2"; | |
7055 | case DW_OP_call4: | |
7056 | return "DW_OP_call4"; | |
7057 | case DW_OP_call_ref: | |
7058 | return "DW_OP_call_ref"; | |
7059 | /* GNU extensions. */ | |
7060 | case DW_OP_GNU_push_tls_address: | |
7061 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
7062 | default: |
7063 | return "OP_<unknown>"; | |
7064 | } | |
7065 | } | |
7066 | ||
7067 | static char * | |
fba45db2 | 7068 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
7069 | { |
7070 | if (mybool) | |
7071 | return "TRUE"; | |
7072 | else | |
7073 | return "FALSE"; | |
7074 | } | |
7075 | ||
7076 | /* Convert a DWARF type code into its string name. */ | |
7077 | ||
7078 | static char * | |
aa1ee363 | 7079 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
7080 | { |
7081 | switch (enc) | |
7082 | { | |
7083 | case DW_ATE_address: | |
7084 | return "DW_ATE_address"; | |
7085 | case DW_ATE_boolean: | |
7086 | return "DW_ATE_boolean"; | |
7087 | case DW_ATE_complex_float: | |
7088 | return "DW_ATE_complex_float"; | |
7089 | case DW_ATE_float: | |
7090 | return "DW_ATE_float"; | |
7091 | case DW_ATE_signed: | |
7092 | return "DW_ATE_signed"; | |
7093 | case DW_ATE_signed_char: | |
7094 | return "DW_ATE_signed_char"; | |
7095 | case DW_ATE_unsigned: | |
7096 | return "DW_ATE_unsigned"; | |
7097 | case DW_ATE_unsigned_char: | |
7098 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
7099 | case DW_ATE_imaginary_float: |
7100 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
7101 | default: |
7102 | return "DW_ATE_<unknown>"; | |
7103 | } | |
7104 | } | |
7105 | ||
7106 | /* Convert a DWARF call frame info operation to its string name. */ | |
7107 | ||
7108 | #if 0 | |
7109 | static char * | |
aa1ee363 | 7110 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
7111 | { |
7112 | switch (cfi_opc) | |
7113 | { | |
7114 | case DW_CFA_advance_loc: | |
7115 | return "DW_CFA_advance_loc"; | |
7116 | case DW_CFA_offset: | |
7117 | return "DW_CFA_offset"; | |
7118 | case DW_CFA_restore: | |
7119 | return "DW_CFA_restore"; | |
7120 | case DW_CFA_nop: | |
7121 | return "DW_CFA_nop"; | |
7122 | case DW_CFA_set_loc: | |
7123 | return "DW_CFA_set_loc"; | |
7124 | case DW_CFA_advance_loc1: | |
7125 | return "DW_CFA_advance_loc1"; | |
7126 | case DW_CFA_advance_loc2: | |
7127 | return "DW_CFA_advance_loc2"; | |
7128 | case DW_CFA_advance_loc4: | |
7129 | return "DW_CFA_advance_loc4"; | |
7130 | case DW_CFA_offset_extended: | |
7131 | return "DW_CFA_offset_extended"; | |
7132 | case DW_CFA_restore_extended: | |
7133 | return "DW_CFA_restore_extended"; | |
7134 | case DW_CFA_undefined: | |
7135 | return "DW_CFA_undefined"; | |
7136 | case DW_CFA_same_value: | |
7137 | return "DW_CFA_same_value"; | |
7138 | case DW_CFA_register: | |
7139 | return "DW_CFA_register"; | |
7140 | case DW_CFA_remember_state: | |
7141 | return "DW_CFA_remember_state"; | |
7142 | case DW_CFA_restore_state: | |
7143 | return "DW_CFA_restore_state"; | |
7144 | case DW_CFA_def_cfa: | |
7145 | return "DW_CFA_def_cfa"; | |
7146 | case DW_CFA_def_cfa_register: | |
7147 | return "DW_CFA_def_cfa_register"; | |
7148 | case DW_CFA_def_cfa_offset: | |
7149 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
7150 | |
7151 | /* DWARF 3 */ | |
7152 | case DW_CFA_def_cfa_expression: | |
7153 | return "DW_CFA_def_cfa_expression"; | |
7154 | case DW_CFA_expression: | |
7155 | return "DW_CFA_expression"; | |
7156 | case DW_CFA_offset_extended_sf: | |
7157 | return "DW_CFA_offset_extended_sf"; | |
7158 | case DW_CFA_def_cfa_sf: | |
7159 | return "DW_CFA_def_cfa_sf"; | |
7160 | case DW_CFA_def_cfa_offset_sf: | |
7161 | return "DW_CFA_def_cfa_offset_sf"; | |
7162 | ||
c906108c SS |
7163 | /* SGI/MIPS specific */ |
7164 | case DW_CFA_MIPS_advance_loc8: | |
7165 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
7166 | |
7167 | /* GNU extensions */ | |
7168 | case DW_CFA_GNU_window_save: | |
7169 | return "DW_CFA_GNU_window_save"; | |
7170 | case DW_CFA_GNU_args_size: | |
7171 | return "DW_CFA_GNU_args_size"; | |
7172 | case DW_CFA_GNU_negative_offset_extended: | |
7173 | return "DW_CFA_GNU_negative_offset_extended"; | |
7174 | ||
c906108c SS |
7175 | default: |
7176 | return "DW_CFA_<unknown>"; | |
7177 | } | |
7178 | } | |
7179 | #endif | |
7180 | ||
f9aca02d | 7181 | static void |
fba45db2 | 7182 | dump_die (struct die_info *die) |
c906108c SS |
7183 | { |
7184 | unsigned int i; | |
7185 | ||
48cd0caa | 7186 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 7187 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 7188 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 7189 | dwarf_bool_name (die->child != NULL)); |
c906108c | 7190 | |
48cd0caa | 7191 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
7192 | for (i = 0; i < die->num_attrs; ++i) |
7193 | { | |
48cd0caa | 7194 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
7195 | dwarf_attr_name (die->attrs[i].name), |
7196 | dwarf_form_name (die->attrs[i].form)); | |
7197 | switch (die->attrs[i].form) | |
7198 | { | |
7199 | case DW_FORM_ref_addr: | |
7200 | case DW_FORM_addr: | |
48cd0caa | 7201 | fprintf_unfiltered (gdb_stderr, "address: "); |
c906108c SS |
7202 | print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
7203 | break; | |
7204 | case DW_FORM_block2: | |
7205 | case DW_FORM_block4: | |
7206 | case DW_FORM_block: | |
7207 | case DW_FORM_block1: | |
48cd0caa | 7208 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c SS |
7209 | break; |
7210 | case DW_FORM_data1: | |
7211 | case DW_FORM_data2: | |
7212 | case DW_FORM_data4: | |
ce5d95e1 | 7213 | case DW_FORM_data8: |
c906108c SS |
7214 | case DW_FORM_ref1: |
7215 | case DW_FORM_ref2: | |
7216 | case DW_FORM_ref4: | |
7217 | case DW_FORM_udata: | |
7218 | case DW_FORM_sdata: | |
48cd0caa | 7219 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
7220 | break; |
7221 | case DW_FORM_string: | |
4bdf3d34 | 7222 | case DW_FORM_strp: |
48cd0caa | 7223 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 7224 | DW_STRING (&die->attrs[i]) |
c5aa993b | 7225 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
7226 | break; |
7227 | case DW_FORM_flag: | |
7228 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 7229 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 7230 | else |
48cd0caa | 7231 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 7232 | break; |
a8329558 KW |
7233 | case DW_FORM_indirect: |
7234 | /* the reader will have reduced the indirect form to | |
7235 | the "base form" so this form should not occur */ | |
48cd0caa | 7236 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 7237 | break; |
c906108c | 7238 | default: |
48cd0caa | 7239 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 7240 | die->attrs[i].form); |
c906108c | 7241 | } |
48cd0caa | 7242 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
7243 | } |
7244 | } | |
7245 | ||
f9aca02d | 7246 | static void |
fba45db2 | 7247 | dump_die_list (struct die_info *die) |
c906108c SS |
7248 | { |
7249 | while (die) | |
7250 | { | |
7251 | dump_die (die); | |
639d11d3 DC |
7252 | if (die->child != NULL) |
7253 | dump_die_list (die->child); | |
7254 | if (die->sibling != NULL) | |
7255 | dump_die_list (die->sibling); | |
c906108c SS |
7256 | } |
7257 | } | |
7258 | ||
f9aca02d | 7259 | static void |
fba45db2 | 7260 | store_in_ref_table (unsigned int offset, struct die_info *die) |
c906108c SS |
7261 | { |
7262 | int h; | |
7263 | struct die_info *old; | |
7264 | ||
7265 | h = (offset % REF_HASH_SIZE); | |
7266 | old = die_ref_table[h]; | |
7267 | die->next_ref = old; | |
7268 | die_ref_table[h] = die; | |
7269 | } | |
7270 | ||
7271 | ||
7272 | static void | |
fba45db2 | 7273 | dwarf2_empty_hash_tables (void) |
c906108c SS |
7274 | { |
7275 | memset (die_ref_table, 0, sizeof (die_ref_table)); | |
7276 | } | |
7277 | ||
7278 | static unsigned int | |
e142c38c | 7279 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
7280 | { |
7281 | unsigned int result = 0; | |
7282 | ||
7283 | switch (attr->form) | |
7284 | { | |
7285 | case DW_FORM_ref_addr: | |
7286 | result = DW_ADDR (attr); | |
7287 | break; | |
7288 | case DW_FORM_ref1: | |
7289 | case DW_FORM_ref2: | |
7290 | case DW_FORM_ref4: | |
613e1657 | 7291 | case DW_FORM_ref8: |
c906108c | 7292 | case DW_FORM_ref_udata: |
e142c38c | 7293 | result = cu->header.offset + DW_UNSND (attr); |
c906108c SS |
7294 | break; |
7295 | default: | |
4d3c2250 KB |
7296 | complaint (&symfile_complaints, |
7297 | "unsupported die ref attribute form: '%s'", | |
7298 | dwarf_form_name (attr->form)); | |
c906108c SS |
7299 | } |
7300 | return result; | |
7301 | } | |
7302 | ||
a02abb62 JB |
7303 | /* Return the constant value held by the given attribute. Return -1 |
7304 | if the value held by the attribute is not constant. */ | |
7305 | ||
7306 | static int | |
7307 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
7308 | { | |
7309 | if (attr->form == DW_FORM_sdata) | |
7310 | return DW_SND (attr); | |
7311 | else if (attr->form == DW_FORM_udata | |
7312 | || attr->form == DW_FORM_data1 | |
7313 | || attr->form == DW_FORM_data2 | |
7314 | || attr->form == DW_FORM_data4 | |
7315 | || attr->form == DW_FORM_data8) | |
7316 | return DW_UNSND (attr); | |
7317 | else | |
7318 | { | |
7319 | complaint (&symfile_complaints, "Attribute value is not a constant (%s)", | |
7320 | dwarf_form_name (attr->form)); | |
7321 | return default_value; | |
7322 | } | |
7323 | } | |
7324 | ||
f9aca02d | 7325 | static struct die_info * |
fba45db2 | 7326 | follow_die_ref (unsigned int offset) |
c906108c SS |
7327 | { |
7328 | struct die_info *die; | |
7329 | int h; | |
7330 | ||
7331 | h = (offset % REF_HASH_SIZE); | |
7332 | die = die_ref_table[h]; | |
7333 | while (die) | |
7334 | { | |
7335 | if (die->offset == offset) | |
7336 | { | |
7337 | return die; | |
7338 | } | |
7339 | die = die->next_ref; | |
7340 | } | |
7341 | return NULL; | |
7342 | } | |
7343 | ||
7344 | static struct type * | |
e142c38c DJ |
7345 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
7346 | struct dwarf2_cu *cu) | |
c906108c SS |
7347 | { |
7348 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
7349 | { | |
659b0389 ML |
7350 | error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]", |
7351 | typeid, objfile->name); | |
c906108c SS |
7352 | } |
7353 | ||
7354 | /* Look for this particular type in the fundamental type vector. If | |
7355 | one is not found, create and install one appropriate for the | |
7356 | current language and the current target machine. */ | |
7357 | ||
e142c38c | 7358 | if (cu->ftypes[typeid] == NULL) |
c906108c | 7359 | { |
e142c38c | 7360 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
7361 | } |
7362 | ||
e142c38c | 7363 | return (cu->ftypes[typeid]); |
c906108c SS |
7364 | } |
7365 | ||
7366 | /* Decode simple location descriptions. | |
7367 | Given a pointer to a dwarf block that defines a location, compute | |
7368 | the location and return the value. | |
7369 | ||
4cecd739 DJ |
7370 | NOTE drow/2003-11-18: This function is called in two situations |
7371 | now: for the address of static or global variables (partial symbols | |
7372 | only) and for offsets into structures which are expected to be | |
7373 | (more or less) constant. The partial symbol case should go away, | |
7374 | and only the constant case should remain. That will let this | |
7375 | function complain more accurately. A few special modes are allowed | |
7376 | without complaint for global variables (for instance, global | |
7377 | register values and thread-local values). | |
c906108c SS |
7378 | |
7379 | A location description containing no operations indicates that the | |
4cecd739 | 7380 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
7381 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
7382 | callers will only want a very basic result and this can become a | |
7383 | complaint. | |
c906108c SS |
7384 | |
7385 | When the result is a register number, the global isreg flag is set, | |
7386 | otherwise it is cleared. | |
7387 | ||
c906108c SS |
7388 | Note that stack[0] is unused except as a default error return. |
7389 | Note that stack overflow is not yet handled. */ | |
7390 | ||
7391 | static CORE_ADDR | |
e7c27a73 | 7392 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 7393 | { |
e7c27a73 DJ |
7394 | struct objfile *objfile = cu->objfile; |
7395 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7396 | int i; |
7397 | int size = blk->size; | |
7398 | char *data = blk->data; | |
7399 | CORE_ADDR stack[64]; | |
7400 | int stacki; | |
7401 | unsigned int bytes_read, unsnd; | |
7402 | unsigned char op; | |
7403 | ||
7404 | i = 0; | |
7405 | stacki = 0; | |
7406 | stack[stacki] = 0; | |
7407 | isreg = 0; | |
c906108c SS |
7408 | |
7409 | while (i < size) | |
7410 | { | |
c906108c SS |
7411 | op = data[i++]; |
7412 | switch (op) | |
7413 | { | |
f1bea926 JM |
7414 | case DW_OP_lit0: |
7415 | case DW_OP_lit1: | |
7416 | case DW_OP_lit2: | |
7417 | case DW_OP_lit3: | |
7418 | case DW_OP_lit4: | |
7419 | case DW_OP_lit5: | |
7420 | case DW_OP_lit6: | |
7421 | case DW_OP_lit7: | |
7422 | case DW_OP_lit8: | |
7423 | case DW_OP_lit9: | |
7424 | case DW_OP_lit10: | |
7425 | case DW_OP_lit11: | |
7426 | case DW_OP_lit12: | |
7427 | case DW_OP_lit13: | |
7428 | case DW_OP_lit14: | |
7429 | case DW_OP_lit15: | |
7430 | case DW_OP_lit16: | |
7431 | case DW_OP_lit17: | |
7432 | case DW_OP_lit18: | |
7433 | case DW_OP_lit19: | |
7434 | case DW_OP_lit20: | |
7435 | case DW_OP_lit21: | |
7436 | case DW_OP_lit22: | |
7437 | case DW_OP_lit23: | |
7438 | case DW_OP_lit24: | |
7439 | case DW_OP_lit25: | |
7440 | case DW_OP_lit26: | |
7441 | case DW_OP_lit27: | |
7442 | case DW_OP_lit28: | |
7443 | case DW_OP_lit29: | |
7444 | case DW_OP_lit30: | |
7445 | case DW_OP_lit31: | |
7446 | stack[++stacki] = op - DW_OP_lit0; | |
7447 | break; | |
7448 | ||
c906108c SS |
7449 | case DW_OP_reg0: |
7450 | case DW_OP_reg1: | |
7451 | case DW_OP_reg2: | |
7452 | case DW_OP_reg3: | |
7453 | case DW_OP_reg4: | |
7454 | case DW_OP_reg5: | |
7455 | case DW_OP_reg6: | |
7456 | case DW_OP_reg7: | |
7457 | case DW_OP_reg8: | |
7458 | case DW_OP_reg9: | |
7459 | case DW_OP_reg10: | |
7460 | case DW_OP_reg11: | |
7461 | case DW_OP_reg12: | |
7462 | case DW_OP_reg13: | |
7463 | case DW_OP_reg14: | |
7464 | case DW_OP_reg15: | |
7465 | case DW_OP_reg16: | |
7466 | case DW_OP_reg17: | |
7467 | case DW_OP_reg18: | |
7468 | case DW_OP_reg19: | |
7469 | case DW_OP_reg20: | |
7470 | case DW_OP_reg21: | |
7471 | case DW_OP_reg22: | |
7472 | case DW_OP_reg23: | |
7473 | case DW_OP_reg24: | |
7474 | case DW_OP_reg25: | |
7475 | case DW_OP_reg26: | |
7476 | case DW_OP_reg27: | |
7477 | case DW_OP_reg28: | |
7478 | case DW_OP_reg29: | |
7479 | case DW_OP_reg30: | |
7480 | case DW_OP_reg31: | |
7481 | isreg = 1; | |
7482 | stack[++stacki] = op - DW_OP_reg0; | |
4cecd739 DJ |
7483 | if (i < size) |
7484 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7485 | break; |
7486 | ||
7487 | case DW_OP_regx: | |
7488 | isreg = 1; | |
7489 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7490 | i += bytes_read; | |
c906108c | 7491 | stack[++stacki] = unsnd; |
4cecd739 DJ |
7492 | if (i < size) |
7493 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7494 | break; |
7495 | ||
7496 | case DW_OP_addr: | |
107d2387 | 7497 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 7498 | cu, &bytes_read); |
107d2387 | 7499 | i += bytes_read; |
c906108c SS |
7500 | break; |
7501 | ||
7502 | case DW_OP_const1u: | |
7503 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
7504 | i += 1; | |
7505 | break; | |
7506 | ||
7507 | case DW_OP_const1s: | |
7508 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
7509 | i += 1; | |
7510 | break; | |
7511 | ||
7512 | case DW_OP_const2u: | |
7513 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
7514 | i += 2; | |
7515 | break; | |
7516 | ||
7517 | case DW_OP_const2s: | |
7518 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
7519 | i += 2; | |
7520 | break; | |
7521 | ||
7522 | case DW_OP_const4u: | |
7523 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
7524 | i += 4; | |
7525 | break; | |
7526 | ||
7527 | case DW_OP_const4s: | |
7528 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
7529 | i += 4; | |
7530 | break; | |
7531 | ||
7532 | case DW_OP_constu: | |
7533 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 7534 | &bytes_read); |
c906108c SS |
7535 | i += bytes_read; |
7536 | break; | |
7537 | ||
7538 | case DW_OP_consts: | |
7539 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
7540 | i += bytes_read; | |
7541 | break; | |
7542 | ||
f1bea926 JM |
7543 | case DW_OP_dup: |
7544 | stack[stacki + 1] = stack[stacki]; | |
7545 | stacki++; | |
7546 | break; | |
7547 | ||
c906108c SS |
7548 | case DW_OP_plus: |
7549 | stack[stacki - 1] += stack[stacki]; | |
7550 | stacki--; | |
7551 | break; | |
7552 | ||
7553 | case DW_OP_plus_uconst: | |
7554 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7555 | i += bytes_read; | |
7556 | break; | |
7557 | ||
7558 | case DW_OP_minus: | |
f1bea926 | 7559 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
7560 | stacki--; |
7561 | break; | |
7562 | ||
7a292a7a | 7563 | case DW_OP_deref: |
7a292a7a | 7564 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
7565 | this using GDB's address_class enum. This is valid for partial |
7566 | global symbols, although the variable's address will be bogus | |
7567 | in the psymtab. */ | |
7a292a7a | 7568 | if (i < size) |
4d3c2250 | 7569 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
7570 | break; |
7571 | ||
9d774e44 | 7572 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
7573 | /* The top of the stack has the offset from the beginning |
7574 | of the thread control block at which the variable is located. */ | |
7575 | /* Nothing should follow this operator, so the top of stack would | |
7576 | be returned. */ | |
4cecd739 DJ |
7577 | /* This is valid for partial global symbols, but the variable's |
7578 | address will be bogus in the psymtab. */ | |
9d774e44 | 7579 | if (i < size) |
4d3c2250 | 7580 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
7581 | break; |
7582 | ||
c906108c | 7583 | default: |
4d3c2250 KB |
7584 | complaint (&symfile_complaints, "unsupported stack op: '%s'", |
7585 | dwarf_stack_op_name (op)); | |
c906108c SS |
7586 | return (stack[stacki]); |
7587 | } | |
7588 | } | |
7589 | return (stack[stacki]); | |
7590 | } | |
7591 | ||
7592 | /* memory allocation interface */ | |
7593 | ||
c906108c | 7594 | static void |
4efb68b1 | 7595 | dwarf2_free_tmp_obstack (void *ignore) |
c906108c SS |
7596 | { |
7597 | obstack_free (&dwarf2_tmp_obstack, NULL); | |
7598 | } | |
7599 | ||
7600 | static struct dwarf_block * | |
fba45db2 | 7601 | dwarf_alloc_block (void) |
c906108c SS |
7602 | { |
7603 | struct dwarf_block *blk; | |
7604 | ||
7605 | blk = (struct dwarf_block *) | |
7606 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct dwarf_block)); | |
7607 | return (blk); | |
7608 | } | |
7609 | ||
7610 | static struct abbrev_info * | |
f3dd6933 | 7611 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
7612 | { |
7613 | struct abbrev_info *abbrev; | |
7614 | ||
f3dd6933 DJ |
7615 | abbrev = (struct abbrev_info *) |
7616 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
7617 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
7618 | return (abbrev); | |
7619 | } | |
7620 | ||
7621 | static struct die_info * | |
fba45db2 | 7622 | dwarf_alloc_die (void) |
c906108c SS |
7623 | { |
7624 | struct die_info *die; | |
7625 | ||
7626 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7627 | memset (die, 0, sizeof (struct die_info)); | |
7628 | return (die); | |
7629 | } | |
2e276125 JB |
7630 | |
7631 | \f | |
7632 | /* Macro support. */ | |
7633 | ||
7634 | ||
7635 | /* Return the full name of file number I in *LH's file name table. | |
7636 | Use COMP_DIR as the name of the current directory of the | |
7637 | compilation. The result is allocated using xmalloc; the caller is | |
7638 | responsible for freeing it. */ | |
7639 | static char * | |
7640 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
7641 | { | |
7642 | struct file_entry *fe = &lh->file_names[file - 1]; | |
7643 | ||
7644 | if (IS_ABSOLUTE_PATH (fe->name)) | |
7645 | return xstrdup (fe->name); | |
7646 | else | |
7647 | { | |
7648 | const char *dir; | |
7649 | int dir_len; | |
7650 | char *full_name; | |
7651 | ||
7652 | if (fe->dir_index) | |
7653 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7654 | else | |
7655 | dir = comp_dir; | |
7656 | ||
7657 | if (dir) | |
7658 | { | |
7659 | dir_len = strlen (dir); | |
7660 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
7661 | strcpy (full_name, dir); | |
7662 | full_name[dir_len] = '/'; | |
7663 | strcpy (full_name + dir_len + 1, fe->name); | |
7664 | return full_name; | |
7665 | } | |
7666 | else | |
7667 | return xstrdup (fe->name); | |
7668 | } | |
7669 | } | |
7670 | ||
7671 | ||
7672 | static struct macro_source_file * | |
7673 | macro_start_file (int file, int line, | |
7674 | struct macro_source_file *current_file, | |
7675 | const char *comp_dir, | |
7676 | struct line_header *lh, struct objfile *objfile) | |
7677 | { | |
7678 | /* The full name of this source file. */ | |
7679 | char *full_name = file_full_name (file, lh, comp_dir); | |
7680 | ||
7681 | /* We don't create a macro table for this compilation unit | |
7682 | at all until we actually get a filename. */ | |
7683 | if (! pending_macros) | |
4a146b47 | 7684 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 7685 | objfile->macro_cache); |
2e276125 JB |
7686 | |
7687 | if (! current_file) | |
7688 | /* If we have no current file, then this must be the start_file | |
7689 | directive for the compilation unit's main source file. */ | |
7690 | current_file = macro_set_main (pending_macros, full_name); | |
7691 | else | |
7692 | current_file = macro_include (current_file, line, full_name); | |
7693 | ||
7694 | xfree (full_name); | |
7695 | ||
7696 | return current_file; | |
7697 | } | |
7698 | ||
7699 | ||
7700 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
7701 | followed by a null byte. */ | |
7702 | static char * | |
7703 | copy_string (const char *buf, int len) | |
7704 | { | |
7705 | char *s = xmalloc (len + 1); | |
7706 | memcpy (s, buf, len); | |
7707 | s[len] = '\0'; | |
7708 | ||
7709 | return s; | |
7710 | } | |
7711 | ||
7712 | ||
7713 | static const char * | |
7714 | consume_improper_spaces (const char *p, const char *body) | |
7715 | { | |
7716 | if (*p == ' ') | |
7717 | { | |
4d3c2250 KB |
7718 | complaint (&symfile_complaints, |
7719 | "macro definition contains spaces in formal argument list:\n`%s'", | |
7720 | body); | |
2e276125 JB |
7721 | |
7722 | while (*p == ' ') | |
7723 | p++; | |
7724 | } | |
7725 | ||
7726 | return p; | |
7727 | } | |
7728 | ||
7729 | ||
7730 | static void | |
7731 | parse_macro_definition (struct macro_source_file *file, int line, | |
7732 | const char *body) | |
7733 | { | |
7734 | const char *p; | |
7735 | ||
7736 | /* The body string takes one of two forms. For object-like macro | |
7737 | definitions, it should be: | |
7738 | ||
7739 | <macro name> " " <definition> | |
7740 | ||
7741 | For function-like macro definitions, it should be: | |
7742 | ||
7743 | <macro name> "() " <definition> | |
7744 | or | |
7745 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
7746 | ||
7747 | Spaces may appear only where explicitly indicated, and in the | |
7748 | <definition>. | |
7749 | ||
7750 | The Dwarf 2 spec says that an object-like macro's name is always | |
7751 | followed by a space, but versions of GCC around March 2002 omit | |
7752 | the space when the macro's definition is the empty string. | |
7753 | ||
7754 | The Dwarf 2 spec says that there should be no spaces between the | |
7755 | formal arguments in a function-like macro's formal argument list, | |
7756 | but versions of GCC around March 2002 include spaces after the | |
7757 | commas. */ | |
7758 | ||
7759 | ||
7760 | /* Find the extent of the macro name. The macro name is terminated | |
7761 | by either a space or null character (for an object-like macro) or | |
7762 | an opening paren (for a function-like macro). */ | |
7763 | for (p = body; *p; p++) | |
7764 | if (*p == ' ' || *p == '(') | |
7765 | break; | |
7766 | ||
7767 | if (*p == ' ' || *p == '\0') | |
7768 | { | |
7769 | /* It's an object-like macro. */ | |
7770 | int name_len = p - body; | |
7771 | char *name = copy_string (body, name_len); | |
7772 | const char *replacement; | |
7773 | ||
7774 | if (*p == ' ') | |
7775 | replacement = body + name_len + 1; | |
7776 | else | |
7777 | { | |
4d3c2250 | 7778 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7779 | replacement = body + name_len; |
7780 | } | |
7781 | ||
7782 | macro_define_object (file, line, name, replacement); | |
7783 | ||
7784 | xfree (name); | |
7785 | } | |
7786 | else if (*p == '(') | |
7787 | { | |
7788 | /* It's a function-like macro. */ | |
7789 | char *name = copy_string (body, p - body); | |
7790 | int argc = 0; | |
7791 | int argv_size = 1; | |
7792 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
7793 | ||
7794 | p++; | |
7795 | ||
7796 | p = consume_improper_spaces (p, body); | |
7797 | ||
7798 | /* Parse the formal argument list. */ | |
7799 | while (*p && *p != ')') | |
7800 | { | |
7801 | /* Find the extent of the current argument name. */ | |
7802 | const char *arg_start = p; | |
7803 | ||
7804 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
7805 | p++; | |
7806 | ||
7807 | if (! *p || p == arg_start) | |
4d3c2250 | 7808 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7809 | else |
7810 | { | |
7811 | /* Make sure argv has room for the new argument. */ | |
7812 | if (argc >= argv_size) | |
7813 | { | |
7814 | argv_size *= 2; | |
7815 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
7816 | } | |
7817 | ||
7818 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
7819 | } | |
7820 | ||
7821 | p = consume_improper_spaces (p, body); | |
7822 | ||
7823 | /* Consume the comma, if present. */ | |
7824 | if (*p == ',') | |
7825 | { | |
7826 | p++; | |
7827 | ||
7828 | p = consume_improper_spaces (p, body); | |
7829 | } | |
7830 | } | |
7831 | ||
7832 | if (*p == ')') | |
7833 | { | |
7834 | p++; | |
7835 | ||
7836 | if (*p == ' ') | |
7837 | /* Perfectly formed definition, no complaints. */ | |
7838 | macro_define_function (file, line, name, | |
7839 | argc, (const char **) argv, | |
7840 | p + 1); | |
7841 | else if (*p == '\0') | |
7842 | { | |
7843 | /* Complain, but do define it. */ | |
4d3c2250 | 7844 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7845 | macro_define_function (file, line, name, |
7846 | argc, (const char **) argv, | |
7847 | p); | |
7848 | } | |
7849 | else | |
7850 | /* Just complain. */ | |
4d3c2250 | 7851 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7852 | } |
7853 | else | |
7854 | /* Just complain. */ | |
4d3c2250 | 7855 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7856 | |
7857 | xfree (name); | |
7858 | { | |
7859 | int i; | |
7860 | ||
7861 | for (i = 0; i < argc; i++) | |
7862 | xfree (argv[i]); | |
7863 | } | |
7864 | xfree (argv); | |
7865 | } | |
7866 | else | |
4d3c2250 | 7867 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7868 | } |
7869 | ||
7870 | ||
7871 | static void | |
7872 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
7873 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 7874 | struct dwarf2_cu *cu) |
2e276125 JB |
7875 | { |
7876 | char *mac_ptr, *mac_end; | |
7877 | struct macro_source_file *current_file = 0; | |
7878 | ||
7879 | if (dwarf_macinfo_buffer == NULL) | |
7880 | { | |
4d3c2250 | 7881 | complaint (&symfile_complaints, "missing .debug_macinfo section"); |
2e276125 JB |
7882 | return; |
7883 | } | |
7884 | ||
7885 | mac_ptr = dwarf_macinfo_buffer + offset; | |
7886 | mac_end = dwarf_macinfo_buffer + dwarf_macinfo_size; | |
7887 | ||
7888 | for (;;) | |
7889 | { | |
7890 | enum dwarf_macinfo_record_type macinfo_type; | |
7891 | ||
7892 | /* Do we at least have room for a macinfo type byte? */ | |
7893 | if (mac_ptr >= mac_end) | |
7894 | { | |
4d3c2250 | 7895 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
7896 | return; |
7897 | } | |
7898 | ||
7899 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
7900 | mac_ptr++; | |
7901 | ||
7902 | switch (macinfo_type) | |
7903 | { | |
7904 | /* A zero macinfo type indicates the end of the macro | |
7905 | information. */ | |
7906 | case 0: | |
7907 | return; | |
7908 | ||
7909 | case DW_MACINFO_define: | |
7910 | case DW_MACINFO_undef: | |
7911 | { | |
7912 | int bytes_read; | |
7913 | int line; | |
7914 | char *body; | |
7915 | ||
7916 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7917 | mac_ptr += bytes_read; | |
7918 | body = read_string (abfd, mac_ptr, &bytes_read); | |
7919 | mac_ptr += bytes_read; | |
7920 | ||
7921 | if (! current_file) | |
4d3c2250 KB |
7922 | complaint (&symfile_complaints, |
7923 | "debug info gives macro %s outside of any file: %s", | |
7924 | macinfo_type == | |
7925 | DW_MACINFO_define ? "definition" : macinfo_type == | |
7926 | DW_MACINFO_undef ? "undefinition" : | |
7927 | "something-or-other", body); | |
2e276125 JB |
7928 | else |
7929 | { | |
7930 | if (macinfo_type == DW_MACINFO_define) | |
7931 | parse_macro_definition (current_file, line, body); | |
7932 | else if (macinfo_type == DW_MACINFO_undef) | |
7933 | macro_undef (current_file, line, body); | |
7934 | } | |
7935 | } | |
7936 | break; | |
7937 | ||
7938 | case DW_MACINFO_start_file: | |
7939 | { | |
7940 | int bytes_read; | |
7941 | int line, file; | |
7942 | ||
7943 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7944 | mac_ptr += bytes_read; | |
7945 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7946 | mac_ptr += bytes_read; | |
7947 | ||
7948 | current_file = macro_start_file (file, line, | |
7949 | current_file, comp_dir, | |
e7c27a73 | 7950 | lh, cu->objfile); |
2e276125 JB |
7951 | } |
7952 | break; | |
7953 | ||
7954 | case DW_MACINFO_end_file: | |
7955 | if (! current_file) | |
4d3c2250 KB |
7956 | complaint (&symfile_complaints, |
7957 | "macro debug info has an unmatched `close_file' directive"); | |
2e276125 JB |
7958 | else |
7959 | { | |
7960 | current_file = current_file->included_by; | |
7961 | if (! current_file) | |
7962 | { | |
7963 | enum dwarf_macinfo_record_type next_type; | |
7964 | ||
7965 | /* GCC circa March 2002 doesn't produce the zero | |
7966 | type byte marking the end of the compilation | |
7967 | unit. Complain if it's not there, but exit no | |
7968 | matter what. */ | |
7969 | ||
7970 | /* Do we at least have room for a macinfo type byte? */ | |
7971 | if (mac_ptr >= mac_end) | |
7972 | { | |
4d3c2250 | 7973 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
7974 | return; |
7975 | } | |
7976 | ||
7977 | /* We don't increment mac_ptr here, so this is just | |
7978 | a look-ahead. */ | |
7979 | next_type = read_1_byte (abfd, mac_ptr); | |
7980 | if (next_type != 0) | |
4d3c2250 KB |
7981 | complaint (&symfile_complaints, |
7982 | "no terminating 0-type entry for macros in `.debug_macinfo' section"); | |
2e276125 JB |
7983 | |
7984 | return; | |
7985 | } | |
7986 | } | |
7987 | break; | |
7988 | ||
7989 | case DW_MACINFO_vendor_ext: | |
7990 | { | |
7991 | int bytes_read; | |
7992 | int constant; | |
7993 | char *string; | |
7994 | ||
7995 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7996 | mac_ptr += bytes_read; | |
7997 | string = read_string (abfd, mac_ptr, &bytes_read); | |
7998 | mac_ptr += bytes_read; | |
7999 | ||
8000 | /* We don't recognize any vendor extensions. */ | |
8001 | } | |
8002 | break; | |
8003 | } | |
8004 | } | |
8005 | } | |
8e19ed76 PS |
8006 | |
8007 | /* Check if the attribute's form is a DW_FORM_block* | |
8008 | if so return true else false. */ | |
8009 | static int | |
8010 | attr_form_is_block (struct attribute *attr) | |
8011 | { | |
8012 | return (attr == NULL ? 0 : | |
8013 | attr->form == DW_FORM_block1 | |
8014 | || attr->form == DW_FORM_block2 | |
8015 | || attr->form == DW_FORM_block4 | |
8016 | || attr->form == DW_FORM_block); | |
8017 | } | |
4c2df51b DJ |
8018 | |
8019 | static void | |
8020 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 8021 | struct dwarf2_cu *cu) |
4c2df51b | 8022 | { |
0d53c4c4 | 8023 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 8024 | { |
0d53c4c4 | 8025 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 8026 | |
4a146b47 | 8027 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8028 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 8029 | baton->objfile = cu->objfile; |
4c2df51b | 8030 | |
0d53c4c4 DJ |
8031 | /* We don't know how long the location list is, but make sure we |
8032 | don't run off the edge of the section. */ | |
8033 | baton->size = dwarf_loc_size - DW_UNSND (attr); | |
8034 | baton->data = dwarf_loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
8035 | baton->base_address = cu->header.base_address; |
8036 | if (cu->header.base_known == 0) | |
0d53c4c4 DJ |
8037 | complaint (&symfile_complaints, |
8038 | "Location list used without specifying the CU base address."); | |
4c2df51b | 8039 | |
a67af2b9 | 8040 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
8041 | SYMBOL_LOCATION_BATON (sym) = baton; |
8042 | } | |
8043 | else | |
8044 | { | |
8045 | struct dwarf2_locexpr_baton *baton; | |
8046 | ||
4a146b47 | 8047 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8048 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 8049 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
8050 | |
8051 | if (attr_form_is_block (attr)) | |
8052 | { | |
8053 | /* Note that we're just copying the block's data pointer | |
8054 | here, not the actual data. We're still pointing into the | |
8055 | dwarf_info_buffer for SYM's objfile; right now we never | |
8056 | release that buffer, but when we do clean up properly | |
8057 | this may need to change. */ | |
8058 | baton->size = DW_BLOCK (attr)->size; | |
8059 | baton->data = DW_BLOCK (attr)->data; | |
8060 | } | |
8061 | else | |
8062 | { | |
8063 | dwarf2_invalid_attrib_class_complaint ("location description", | |
8064 | SYMBOL_NATURAL_NAME (sym)); | |
8065 | baton->size = 0; | |
8066 | baton->data = NULL; | |
8067 | } | |
8068 | ||
a67af2b9 | 8069 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
8070 | SYMBOL_LOCATION_BATON (sym) = baton; |
8071 | } | |
4c2df51b | 8072 | } |