Commit | Line | Data |
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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 | |
4bb7a0a7 DJ |
737 | static char *skip_leb128 (bfd *, char *); |
738 | ||
e142c38c | 739 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 740 | |
e142c38c DJ |
741 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
742 | struct dwarf2_cu *); | |
c906108c | 743 | |
e142c38c | 744 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 745 | |
e142c38c DJ |
746 | static struct die_info *die_specification (struct die_info *die, |
747 | struct dwarf2_cu *); | |
63d06c5c | 748 | |
debd256d JB |
749 | static void free_line_header (struct line_header *lh); |
750 | ||
751 | static struct line_header *(dwarf_decode_line_header | |
752 | (unsigned int offset, | |
e7c27a73 | 753 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
754 | |
755 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
e7c27a73 | 756 | struct dwarf2_cu *); |
c906108c | 757 | |
a14ed312 | 758 | static void dwarf2_start_subfile (char *, char *); |
c906108c | 759 | |
a14ed312 | 760 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 761 | struct dwarf2_cu *); |
c906108c | 762 | |
a14ed312 | 763 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 764 | struct dwarf2_cu *); |
c906108c | 765 | |
2df3850c JM |
766 | static void dwarf2_const_value_data (struct attribute *attr, |
767 | struct symbol *sym, | |
768 | int bits); | |
769 | ||
e7c27a73 | 770 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 771 | |
e7c27a73 DJ |
772 | static struct type *die_containing_type (struct die_info *, |
773 | struct dwarf2_cu *); | |
c906108c SS |
774 | |
775 | #if 0 | |
a14ed312 | 776 | static struct type *type_at_offset (unsigned int, struct objfile *); |
c906108c SS |
777 | #endif |
778 | ||
e7c27a73 | 779 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 780 | |
e7c27a73 | 781 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 782 | |
086ed43d | 783 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 784 | |
e142c38c | 785 | static char *determine_prefix_aux (struct die_info *die, struct dwarf2_cu *); |
fdde2d81 | 786 | |
63d06c5c DC |
787 | static char *typename_concat (const char *prefix, const char *suffix); |
788 | ||
e142c38c | 789 | static char *class_name (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 790 | |
e7c27a73 | 791 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 792 | |
e7c27a73 | 793 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 794 | |
a02abb62 JB |
795 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
796 | ||
e7c27a73 | 797 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 798 | |
e7c27a73 | 799 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 800 | |
e7c27a73 | 801 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 802 | |
a14ed312 | 803 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 804 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 805 | |
fae299cd DC |
806 | static void get_scope_pc_bounds (struct die_info *, |
807 | CORE_ADDR *, CORE_ADDR *, | |
808 | struct dwarf2_cu *); | |
809 | ||
a14ed312 | 810 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 811 | struct dwarf2_cu *); |
c906108c | 812 | |
a14ed312 | 813 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 814 | struct type *, struct dwarf2_cu *); |
c906108c | 815 | |
a14ed312 | 816 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 817 | struct die_info *, struct type *, |
e7c27a73 | 818 | struct dwarf2_cu *); |
c906108c | 819 | |
a14ed312 | 820 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 821 | struct type *, struct dwarf2_cu *); |
c906108c | 822 | |
134d01f1 DJ |
823 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
824 | ||
825 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 826 | |
e7c27a73 | 827 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 828 | |
e7c27a73 | 829 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 830 | |
38d518c9 | 831 | static const char *namespace_name (struct die_info *die, |
e142c38c | 832 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 833 | |
134d01f1 DJ |
834 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
835 | ||
836 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 837 | |
e7c27a73 | 838 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 839 | |
e7c27a73 | 840 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 841 | |
e7c27a73 | 842 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 843 | |
e7c27a73 | 844 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 845 | |
e7c27a73 DJ |
846 | static void read_tag_ptr_to_member_type (struct die_info *, |
847 | struct dwarf2_cu *); | |
c906108c | 848 | |
e7c27a73 | 849 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 850 | |
e7c27a73 | 851 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 852 | |
e7c27a73 | 853 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 854 | |
e7c27a73 | 855 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 856 | |
e7c27a73 | 857 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 858 | |
e7c27a73 | 859 | static struct die_info *read_comp_unit (char *, bfd *, struct dwarf2_cu *); |
c906108c | 860 | |
639d11d3 | 861 | static struct die_info *read_die_and_children (char *info_ptr, bfd *abfd, |
e7c27a73 | 862 | struct dwarf2_cu *, |
639d11d3 DC |
863 | char **new_info_ptr, |
864 | struct die_info *parent); | |
865 | ||
866 | static struct die_info *read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 867 | struct dwarf2_cu *, |
639d11d3 DC |
868 | char **new_info_ptr, |
869 | struct die_info *parent); | |
870 | ||
a14ed312 | 871 | static void free_die_list (struct die_info *); |
c906108c | 872 | |
74b7792f AC |
873 | static struct cleanup *make_cleanup_free_die_list (struct die_info *); |
874 | ||
e7c27a73 | 875 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 876 | |
e142c38c | 877 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 878 | |
e142c38c | 879 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 880 | |
e142c38c DJ |
881 | static struct die_info *dwarf2_extension (struct die_info *die, |
882 | struct dwarf2_cu *); | |
9219021c | 883 | |
a14ed312 | 884 | static char *dwarf_tag_name (unsigned int); |
c906108c | 885 | |
a14ed312 | 886 | static char *dwarf_attr_name (unsigned int); |
c906108c | 887 | |
a14ed312 | 888 | static char *dwarf_form_name (unsigned int); |
c906108c | 889 | |
a14ed312 | 890 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 891 | |
a14ed312 | 892 | static char *dwarf_bool_name (unsigned int); |
c906108c | 893 | |
a14ed312 | 894 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
895 | |
896 | #if 0 | |
a14ed312 | 897 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 898 | |
a14ed312 | 899 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
900 | #endif |
901 | ||
f9aca02d | 902 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 903 | |
f9aca02d | 904 | static void dump_die (struct die_info *); |
c906108c | 905 | |
f9aca02d | 906 | static void dump_die_list (struct die_info *); |
c906108c | 907 | |
f9aca02d | 908 | static void store_in_ref_table (unsigned int, struct die_info *); |
c906108c | 909 | |
7f0e3f52 | 910 | static void dwarf2_empty_hash_tables (void); |
c906108c | 911 | |
e142c38c DJ |
912 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
913 | struct dwarf2_cu *); | |
c906108c | 914 | |
a02abb62 JB |
915 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
916 | ||
f9aca02d | 917 | static struct die_info *follow_die_ref (unsigned int); |
c906108c | 918 | |
e142c38c DJ |
919 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
920 | struct dwarf2_cu *); | |
c906108c SS |
921 | |
922 | /* memory allocation interface */ | |
923 | ||
4efb68b1 | 924 | static void dwarf2_free_tmp_obstack (void *); |
c906108c | 925 | |
a14ed312 | 926 | static struct dwarf_block *dwarf_alloc_block (void); |
c906108c | 927 | |
f3dd6933 | 928 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 929 | |
a14ed312 | 930 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 931 | |
e142c38c | 932 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 933 | |
e142c38c DJ |
934 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
935 | struct dwarf2_cu *); | |
5fb290d7 | 936 | |
2e276125 | 937 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 938 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 939 | |
8e19ed76 PS |
940 | static int attr_form_is_block (struct attribute *); |
941 | ||
4c2df51b DJ |
942 | static void |
943 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 944 | struct dwarf2_cu *cu); |
4c2df51b | 945 | |
4bb7a0a7 DJ |
946 | static char *skip_one_die (char *info_ptr, struct abbrev_info *abbrev, |
947 | struct dwarf2_cu *cu); | |
948 | ||
c906108c SS |
949 | /* Try to locate the sections we need for DWARF 2 debugging |
950 | information and return true if we have enough to do something. */ | |
951 | ||
952 | int | |
fba45db2 | 953 | dwarf2_has_info (bfd *abfd) |
c906108c | 954 | { |
188dd5d6 DJ |
955 | dwarf_info_section = 0; |
956 | dwarf_abbrev_section = 0; | |
957 | dwarf_line_section = 0; | |
958 | dwarf_str_section = 0; | |
959 | dwarf_macinfo_section = 0; | |
960 | dwarf_frame_section = 0; | |
961 | dwarf_eh_frame_section = 0; | |
962 | dwarf_ranges_section = 0; | |
963 | dwarf_loc_section = 0; | |
af34e669 | 964 | |
c906108c | 965 | bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 966 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
967 | } |
968 | ||
969 | /* This function is mapped across the sections and remembers the | |
970 | offset and size of each of the debugging sections we are interested | |
971 | in. */ | |
972 | ||
973 | static void | |
4efb68b1 | 974 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 975 | { |
6314a349 | 976 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 977 | { |
c906108c | 978 | dwarf_info_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 979 | dwarf_info_section = sectp; |
c906108c | 980 | } |
6314a349 | 981 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 982 | { |
c906108c | 983 | dwarf_abbrev_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 984 | dwarf_abbrev_section = sectp; |
c906108c | 985 | } |
6314a349 | 986 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 987 | { |
c906108c | 988 | dwarf_line_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 989 | dwarf_line_section = sectp; |
c906108c | 990 | } |
6314a349 | 991 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 992 | { |
c906108c | 993 | dwarf_pubnames_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 994 | dwarf_pubnames_section = sectp; |
c906108c | 995 | } |
6314a349 | 996 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 997 | { |
c906108c | 998 | dwarf_aranges_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 999 | dwarf_aranges_section = sectp; |
c906108c | 1000 | } |
6314a349 | 1001 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1002 | { |
c906108c | 1003 | dwarf_loc_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 1004 | dwarf_loc_section = sectp; |
c906108c | 1005 | } |
6314a349 | 1006 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1007 | { |
c906108c | 1008 | dwarf_macinfo_size = bfd_get_section_size_before_reloc (sectp); |
0cf824c9 | 1009 | dwarf_macinfo_section = sectp; |
c906108c | 1010 | } |
6314a349 | 1011 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1012 | { |
c906108c | 1013 | dwarf_str_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 1014 | dwarf_str_section = sectp; |
c906108c | 1015 | } |
6314a349 | 1016 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1017 | { |
b6af0555 | 1018 | dwarf_frame_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 1019 | dwarf_frame_section = sectp; |
b6af0555 | 1020 | } |
6314a349 | 1021 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1022 | { |
3799ccc6 EZ |
1023 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1024 | if (aflag & SEC_HAS_CONTENTS) | |
1025 | { | |
3799ccc6 EZ |
1026 | dwarf_eh_frame_size = bfd_get_section_size_before_reloc (sectp); |
1027 | dwarf_eh_frame_section = sectp; | |
1028 | } | |
b6af0555 | 1029 | } |
6314a349 | 1030 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1031 | { |
af34e669 | 1032 | dwarf_ranges_size = bfd_get_section_size_before_reloc (sectp); |
6f10aeb1 | 1033 | dwarf_ranges_section = sectp; |
af34e669 | 1034 | } |
c906108c SS |
1035 | } |
1036 | ||
1037 | /* Build a partial symbol table. */ | |
1038 | ||
1039 | void | |
fba45db2 | 1040 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c SS |
1041 | { |
1042 | ||
1043 | /* We definitely need the .debug_info and .debug_abbrev sections */ | |
1044 | ||
188dd5d6 DJ |
1045 | dwarf_info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1046 | dwarf_abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
1047 | ||
1048 | if (dwarf_line_section) | |
1049 | dwarf_line_buffer = dwarf2_read_section (objfile, dwarf_line_section); | |
41ff2da1 DC |
1050 | else |
1051 | dwarf_line_buffer = NULL; | |
c906108c | 1052 | |
188dd5d6 DJ |
1053 | if (dwarf_str_section) |
1054 | dwarf_str_buffer = dwarf2_read_section (objfile, dwarf_str_section); | |
4bdf3d34 JJ |
1055 | else |
1056 | dwarf_str_buffer = NULL; | |
1057 | ||
188dd5d6 | 1058 | if (dwarf_macinfo_section) |
2e276125 | 1059 | dwarf_macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1060 | dwarf_macinfo_section); |
2e276125 JB |
1061 | else |
1062 | dwarf_macinfo_buffer = NULL; | |
1063 | ||
188dd5d6 DJ |
1064 | if (dwarf_ranges_section) |
1065 | dwarf_ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); | |
af34e669 DJ |
1066 | else |
1067 | dwarf_ranges_buffer = NULL; | |
1068 | ||
188dd5d6 DJ |
1069 | if (dwarf_loc_section) |
1070 | dwarf_loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); | |
0d53c4c4 DJ |
1071 | else |
1072 | dwarf_loc_buffer = NULL; | |
1073 | ||
ef96bde8 EZ |
1074 | if (mainline |
1075 | || (objfile->global_psymbols.size == 0 | |
1076 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1077 | { |
1078 | init_psymbol_list (objfile, 1024); | |
1079 | } | |
1080 | ||
1081 | #if 0 | |
1082 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1083 | { | |
d4f3574e | 1084 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1085 | .debug_pubnames sections */ |
1086 | ||
d4f3574e | 1087 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1088 | } |
1089 | else | |
1090 | #endif | |
1091 | /* only test this case for now */ | |
c5aa993b | 1092 | { |
c906108c | 1093 | /* In this case we have to work a bit harder */ |
d4f3574e | 1094 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1095 | } |
1096 | } | |
1097 | ||
1098 | #if 0 | |
1099 | /* Build the partial symbol table from the information in the | |
1100 | .debug_pubnames and .debug_aranges sections. */ | |
1101 | ||
1102 | static void | |
fba45db2 | 1103 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1104 | { |
1105 | bfd *abfd = objfile->obfd; | |
1106 | char *aranges_buffer, *pubnames_buffer; | |
1107 | char *aranges_ptr, *pubnames_ptr; | |
1108 | unsigned int entry_length, version, info_offset, info_size; | |
1109 | ||
1110 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1111 | dwarf_pubnames_section); |
c906108c SS |
1112 | pubnames_ptr = pubnames_buffer; |
1113 | while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size) | |
1114 | { | |
613e1657 KB |
1115 | struct comp_unit_head cu_header; |
1116 | int bytes_read; | |
1117 | ||
1118 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
1119 | &bytes_read); | |
1120 | pubnames_ptr += bytes_read; | |
c906108c SS |
1121 | version = read_1_byte (abfd, pubnames_ptr); |
1122 | pubnames_ptr += 1; | |
1123 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1124 | pubnames_ptr += 4; | |
1125 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1126 | pubnames_ptr += 4; | |
1127 | } | |
1128 | ||
1129 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1130 | dwarf_aranges_section); |
c906108c SS |
1131 | |
1132 | } | |
1133 | #endif | |
1134 | ||
107d2387 AC |
1135 | /* Read in the comp unit header information from the debug_info at |
1136 | info_ptr. */ | |
1137 | ||
1138 | static char * | |
1139 | read_comp_unit_head (struct comp_unit_head *cu_header, | |
1140 | char *info_ptr, bfd *abfd) | |
1141 | { | |
1142 | int signed_addr; | |
613e1657 KB |
1143 | int bytes_read; |
1144 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, | |
1145 | &bytes_read); | |
1146 | info_ptr += bytes_read; | |
107d2387 AC |
1147 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1148 | info_ptr += 2; | |
613e1657 KB |
1149 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1150 | &bytes_read); | |
1151 | info_ptr += bytes_read; | |
107d2387 AC |
1152 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1153 | info_ptr += 1; | |
1154 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1155 | if (signed_addr < 0) | |
8e65ff28 AC |
1156 | internal_error (__FILE__, __LINE__, |
1157 | "read_comp_unit_head: dwarf from non elf file"); | |
107d2387 AC |
1158 | cu_header->signed_addr_p = signed_addr; |
1159 | return info_ptr; | |
1160 | } | |
1161 | ||
c906108c SS |
1162 | /* Build the partial symbol table by doing a quick pass through the |
1163 | .debug_info and .debug_abbrev sections. */ | |
1164 | ||
1165 | static void | |
fba45db2 | 1166 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1167 | { |
1168 | /* Instead of reading this into a big buffer, we should probably use | |
1169 | mmap() on architectures that support it. (FIXME) */ | |
1170 | bfd *abfd = objfile->obfd; | |
1171 | char *info_ptr, *abbrev_ptr; | |
1172 | char *beg_of_comp_unit; | |
c906108c SS |
1173 | struct partial_die_info comp_unit_die; |
1174 | struct partial_symtab *pst; | |
1175 | struct cleanup *back_to; | |
e142c38c | 1176 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1177 | |
c906108c SS |
1178 | info_ptr = dwarf_info_buffer; |
1179 | abbrev_ptr = dwarf_abbrev_buffer; | |
1180 | ||
9e84cbde JB |
1181 | /* We use dwarf2_tmp_obstack for objects that don't need to survive |
1182 | the partial symbol scan, like attribute values. | |
1183 | ||
1184 | We could reduce our peak memory consumption during partial symbol | |
1185 | table construction by freeing stuff from this obstack more often | |
1186 | --- say, after processing each compilation unit, or each die --- | |
1187 | but it turns out that this saves almost nothing. For an | |
1188 | executable with 11Mb of Dwarf 2 data, I found about 64k allocated | |
1189 | on dwarf2_tmp_obstack. Some investigation showed: | |
1190 | ||
1191 | 1) 69% of the attributes used forms DW_FORM_addr, DW_FORM_data*, | |
1192 | DW_FORM_flag, DW_FORM_[su]data, and DW_FORM_ref*. These are | |
1193 | all fixed-length values not requiring dynamic allocation. | |
1194 | ||
1195 | 2) 30% of the attributes used the form DW_FORM_string. For | |
1196 | DW_FORM_string, read_attribute simply hands back a pointer to | |
1197 | the null-terminated string in dwarf_info_buffer, so no dynamic | |
1198 | allocation is needed there either. | |
1199 | ||
1200 | 3) The remaining 1% of the attributes all used DW_FORM_block1. | |
1201 | 75% of those were DW_AT_frame_base location lists for | |
1202 | functions; the rest were DW_AT_location attributes, probably | |
1203 | for the global variables. | |
1204 | ||
1205 | Anyway, what this all means is that the memory the dwarf2 | |
1206 | reader uses as temporary space reading partial symbols is about | |
1207 | 0.5% as much as we use for dwarf_*_buffer. That's noise. */ | |
1208 | ||
c906108c SS |
1209 | obstack_init (&dwarf2_tmp_obstack); |
1210 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1211 | ||
af703f96 JB |
1212 | /* Since the objects we're extracting from dwarf_info_buffer vary in |
1213 | length, only the individual functions to extract them (like | |
1214 | read_comp_unit_head and read_partial_die) can really know whether | |
1215 | the buffer is large enough to hold another complete object. | |
1216 | ||
1217 | At the moment, they don't actually check that. If | |
1218 | dwarf_info_buffer holds just one extra byte after the last | |
1219 | compilation unit's dies, then read_comp_unit_head will happily | |
1220 | read off the end of the buffer. read_partial_die is similarly | |
1221 | casual. Those functions should be fixed. | |
1222 | ||
1223 | For this loop condition, simply checking whether there's any data | |
1224 | left at all should be sufficient. */ | |
2541c7cf | 1225 | while (info_ptr < dwarf_info_buffer + dwarf_info_size) |
c906108c | 1226 | { |
f3dd6933 | 1227 | struct cleanup *back_to_inner; |
e7c27a73 | 1228 | struct dwarf2_cu cu; |
c906108c | 1229 | beg_of_comp_unit = info_ptr; |
c906108c | 1230 | |
e7c27a73 DJ |
1231 | cu.objfile = objfile; |
1232 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); | |
1233 | ||
1234 | if (cu.header.version != 2) | |
c906108c | 1235 | { |
e7c27a73 | 1236 | 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 |
1237 | return; |
1238 | } | |
e7c27a73 | 1239 | if (cu.header.abbrev_offset >= dwarf_abbrev_size) |
c906108c | 1240 | { |
659b0389 | 1241 | error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6) [in module %s]", |
e7c27a73 | 1242 | (long) cu.header.abbrev_offset, |
659b0389 ML |
1243 | (long) (beg_of_comp_unit - dwarf_info_buffer), |
1244 | bfd_get_filename (abfd)); | |
c906108c SS |
1245 | return; |
1246 | } | |
e7c27a73 | 1247 | if (beg_of_comp_unit + cu.header.length + cu.header.initial_length_size |
c906108c SS |
1248 | > dwarf_info_buffer + dwarf_info_size) |
1249 | { | |
659b0389 | 1250 | error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0) [in module %s]", |
e7c27a73 | 1251 | (long) cu.header.length, |
659b0389 ML |
1252 | (long) (beg_of_comp_unit - dwarf_info_buffer), |
1253 | bfd_get_filename (abfd)); | |
c906108c SS |
1254 | return; |
1255 | } | |
57349743 | 1256 | /* Complete the cu_header */ |
e7c27a73 DJ |
1257 | cu.header.offset = beg_of_comp_unit - dwarf_info_buffer; |
1258 | cu.header.first_die_ptr = info_ptr; | |
1259 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1260 | |
e142c38c DJ |
1261 | cu.list_in_scope = &file_symbols; |
1262 | ||
c906108c | 1263 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1264 | dwarf2_read_abbrevs (abfd, &cu); |
f3dd6933 | 1265 | back_to_inner = make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c SS |
1266 | |
1267 | /* Read the compilation unit die */ | |
107d2387 | 1268 | info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr, |
e7c27a73 | 1269 | &cu); |
c906108c SS |
1270 | |
1271 | /* Set the language we're debugging */ | |
e142c38c | 1272 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1273 | |
1274 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1275 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1276 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1277 | comp_unit_die.lowpc, |
1278 | objfile->global_psymbols.next, | |
1279 | objfile->static_psymbols.next); | |
1280 | ||
1281 | pst->read_symtab_private = (char *) | |
8b92e4d5 | 1282 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct dwarf2_pinfo)); |
c5aa993b JM |
1283 | DWARF_INFO_BUFFER (pst) = dwarf_info_buffer; |
1284 | DWARF_INFO_OFFSET (pst) = beg_of_comp_unit - dwarf_info_buffer; | |
1285 | DWARF_ABBREV_BUFFER (pst) = dwarf_abbrev_buffer; | |
1286 | DWARF_ABBREV_SIZE (pst) = dwarf_abbrev_size; | |
1287 | DWARF_LINE_BUFFER (pst) = dwarf_line_buffer; | |
9ab3e532 | 1288 | DWARF_LINE_SIZE (pst) = dwarf_line_size; |
4bdf3d34 JJ |
1289 | DWARF_STR_BUFFER (pst) = dwarf_str_buffer; |
1290 | DWARF_STR_SIZE (pst) = dwarf_str_size; | |
2e276125 JB |
1291 | DWARF_MACINFO_BUFFER (pst) = dwarf_macinfo_buffer; |
1292 | DWARF_MACINFO_SIZE (pst) = dwarf_macinfo_size; | |
af34e669 DJ |
1293 | DWARF_RANGES_BUFFER (pst) = dwarf_ranges_buffer; |
1294 | DWARF_RANGES_SIZE (pst) = dwarf_ranges_size; | |
0d53c4c4 DJ |
1295 | DWARF_LOC_BUFFER (pst) = dwarf_loc_buffer; |
1296 | DWARF_LOC_SIZE (pst) = dwarf_loc_size; | |
613e1657 | 1297 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1298 | |
1299 | /* Store the function that reads in the rest of the symbol table */ | |
1300 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1301 | ||
1302 | /* Check if comp unit has_children. | |
1303 | If so, read the rest of the partial symbols from this comp unit. | |
1304 | If not, there's no more debug_info for this comp unit. */ | |
1305 | if (comp_unit_die.has_children) | |
1306 | { | |
91c24f0a DC |
1307 | lowpc = ((CORE_ADDR) -1); |
1308 | highpc = ((CORE_ADDR) 0); | |
1309 | ||
e7c27a73 DJ |
1310 | info_ptr = scan_partial_symbols (info_ptr, &lowpc, &highpc, |
1311 | &cu, NULL); | |
c906108c | 1312 | |
91c24f0a DC |
1313 | /* If we didn't find a lowpc, set it to highpc to avoid |
1314 | complaints from `maint check'. */ | |
1315 | if (lowpc == ((CORE_ADDR) -1)) | |
1316 | lowpc = highpc; | |
1317 | ||
c906108c SS |
1318 | /* If the compilation unit didn't have an explicit address range, |
1319 | then use the information extracted from its child dies. */ | |
0b010bcc | 1320 | if (! comp_unit_die.has_pc_info) |
c906108c | 1321 | { |
c5aa993b | 1322 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1323 | comp_unit_die.highpc = highpc; |
1324 | } | |
1325 | } | |
c5aa993b | 1326 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1327 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1328 | ||
1329 | pst->n_global_syms = objfile->global_psymbols.next - | |
1330 | (objfile->global_psymbols.list + pst->globals_offset); | |
1331 | pst->n_static_syms = objfile->static_psymbols.next - | |
1332 | (objfile->static_psymbols.list + pst->statics_offset); | |
1333 | sort_pst_symbols (pst); | |
1334 | ||
1335 | /* If there is already a psymtab or symtab for a file of this | |
1336 | name, remove it. (If there is a symtab, more drastic things | |
1337 | also happen.) This happens in VxWorks. */ | |
1338 | free_named_symtabs (pst->filename); | |
1339 | ||
e7c27a73 DJ |
1340 | info_ptr = beg_of_comp_unit + cu.header.length |
1341 | + cu.header.initial_length_size; | |
f3dd6933 DJ |
1342 | |
1343 | do_cleanups (back_to_inner); | |
c906108c SS |
1344 | } |
1345 | do_cleanups (back_to); | |
1346 | } | |
1347 | ||
91c24f0a | 1348 | /* Read in all interesting dies to the end of the compilation unit or |
5c4e30ca DC |
1349 | to the end of the current namespace. NAMESPACE is NULL if we |
1350 | haven't yet encountered any DW_TAG_namespace entries; otherwise, | |
1351 | it's the name of the current namespace. In particular, it's the | |
1352 | empty string if we're currently in the global namespace but have | |
1353 | previously encountered a DW_TAG_namespace. */ | |
c906108c SS |
1354 | |
1355 | static char * | |
e7c27a73 DJ |
1356 | scan_partial_symbols (char *info_ptr, CORE_ADDR *lowpc, |
1357 | CORE_ADDR *highpc, struct dwarf2_cu *cu, | |
5c4e30ca | 1358 | const char *namespace) |
c906108c | 1359 | { |
e7c27a73 | 1360 | struct objfile *objfile = cu->objfile; |
c906108c SS |
1361 | bfd *abfd = objfile->obfd; |
1362 | struct partial_die_info pdi; | |
1363 | ||
91c24f0a DC |
1364 | /* Now, march along the PDI's, descending into ones which have |
1365 | interesting children but skipping the children of the other ones, | |
1366 | until we reach the end of the compilation unit. */ | |
c906108c | 1367 | |
91c24f0a | 1368 | while (1) |
c906108c | 1369 | { |
91c24f0a DC |
1370 | /* This flag tells whether or not info_ptr has gotten updated |
1371 | inside the loop. */ | |
1372 | int info_ptr_updated = 0; | |
1373 | ||
e7c27a73 | 1374 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
c906108c | 1375 | |
91c24f0a DC |
1376 | /* Anonymous namespaces have no name but have interesting |
1377 | children, so we need to look at them. Ditto for anonymous | |
1378 | enums. */ | |
933c6fe4 | 1379 | |
91c24f0a DC |
1380 | if (pdi.name != NULL || pdi.tag == DW_TAG_namespace |
1381 | || pdi.tag == DW_TAG_enumeration_type) | |
c906108c SS |
1382 | { |
1383 | switch (pdi.tag) | |
1384 | { | |
1385 | case DW_TAG_subprogram: | |
0b010bcc | 1386 | if (pdi.has_pc_info) |
c906108c SS |
1387 | { |
1388 | if (pdi.lowpc < *lowpc) | |
1389 | { | |
1390 | *lowpc = pdi.lowpc; | |
1391 | } | |
1392 | if (pdi.highpc > *highpc) | |
1393 | { | |
1394 | *highpc = pdi.highpc; | |
1395 | } | |
91c24f0a | 1396 | if (!pdi.is_declaration) |
c906108c | 1397 | { |
e7c27a73 | 1398 | add_partial_symbol (&pdi, cu, namespace); |
c906108c SS |
1399 | } |
1400 | } | |
1401 | break; | |
1402 | case DW_TAG_variable: | |
1403 | case DW_TAG_typedef: | |
91c24f0a | 1404 | case DW_TAG_union_type: |
63d06c5c DC |
1405 | if (!pdi.is_declaration) |
1406 | { | |
1407 | add_partial_symbol (&pdi, cu, namespace); | |
1408 | } | |
1409 | break; | |
c906108c SS |
1410 | case DW_TAG_class_type: |
1411 | case DW_TAG_structure_type: | |
91c24f0a | 1412 | if (!pdi.is_declaration) |
c906108c | 1413 | { |
63d06c5c DC |
1414 | info_ptr = add_partial_structure (&pdi, info_ptr, cu, |
1415 | namespace); | |
1416 | info_ptr_updated = 1; | |
c906108c SS |
1417 | } |
1418 | break; | |
91c24f0a DC |
1419 | case DW_TAG_enumeration_type: |
1420 | if (!pdi.is_declaration) | |
1421 | { | |
e7c27a73 | 1422 | info_ptr = add_partial_enumeration (&pdi, info_ptr, cu, |
5c4e30ca | 1423 | namespace); |
91c24f0a DC |
1424 | info_ptr_updated = 1; |
1425 | } | |
c906108c SS |
1426 | break; |
1427 | case DW_TAG_base_type: | |
a02abb62 | 1428 | case DW_TAG_subrange_type: |
c906108c | 1429 | /* File scope base type definitions are added to the partial |
c5aa993b | 1430 | symbol table. */ |
e7c27a73 | 1431 | add_partial_symbol (&pdi, cu, namespace); |
c906108c | 1432 | break; |
d9fa45fe | 1433 | case DW_TAG_namespace: |
5c4e30ca DC |
1434 | /* We've hit a DW_TAG_namespace entry, so we know this |
1435 | file has been compiled using a compiler that | |
1436 | generates them; update NAMESPACE to reflect that. */ | |
1437 | if (namespace == NULL) | |
1438 | namespace = ""; | |
e7c27a73 DJ |
1439 | info_ptr = add_partial_namespace (&pdi, info_ptr, lowpc, highpc, |
1440 | cu, namespace); | |
91c24f0a DC |
1441 | info_ptr_updated = 1; |
1442 | break; | |
c906108c SS |
1443 | default: |
1444 | break; | |
1445 | } | |
1446 | } | |
1447 | ||
c906108c | 1448 | if (pdi.tag == 0) |
91c24f0a DC |
1449 | break; |
1450 | ||
1451 | /* If the die has a sibling, skip to the sibling, unless another | |
1452 | function has already updated info_ptr for us. */ | |
1453 | ||
1454 | /* NOTE: carlton/2003-06-16: This is a bit hackish, but whether | |
1455 | or not we want to update this depends on enough stuff (not | |
1456 | only pdi.tag but also whether or not pdi.name is NULL) that | |
1457 | this seems like the easiest way to handle the issue. */ | |
1458 | ||
1459 | if (!info_ptr_updated) | |
e7c27a73 | 1460 | info_ptr = locate_pdi_sibling (&pdi, info_ptr, abfd, cu); |
c906108c SS |
1461 | } |
1462 | ||
c906108c SS |
1463 | return info_ptr; |
1464 | } | |
1465 | ||
1466 | static void | |
e7c27a73 DJ |
1467 | add_partial_symbol (struct partial_die_info *pdi, |
1468 | struct dwarf2_cu *cu, const char *namespace) | |
c906108c | 1469 | { |
e7c27a73 | 1470 | struct objfile *objfile = cu->objfile; |
c906108c | 1471 | CORE_ADDR addr = 0; |
38d518c9 | 1472 | char *actual_name = pdi->name; |
5c4e30ca | 1473 | const struct partial_symbol *psym = NULL; |
e142c38c DJ |
1474 | CORE_ADDR baseaddr; |
1475 | ||
1476 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1477 | |
63d06c5c DC |
1478 | /* If we're not in the global namespace and if the namespace name |
1479 | isn't encoded in a mangled actual_name, add it. */ | |
1480 | ||
1481 | if (pdi_needs_namespace (pdi->tag, namespace)) | |
1482 | { | |
1483 | actual_name = alloca (strlen (pdi->name) + 2 + strlen (namespace) + 1); | |
1484 | strcpy (actual_name, namespace); | |
1485 | strcat (actual_name, "::"); | |
1486 | strcat (actual_name, pdi->name); | |
1487 | } | |
1488 | ||
c906108c SS |
1489 | switch (pdi->tag) |
1490 | { | |
1491 | case DW_TAG_subprogram: | |
1492 | if (pdi->is_external) | |
1493 | { | |
38d518c9 | 1494 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1495 | mst_text, objfile); */ |
38d518c9 | 1496 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1497 | VAR_DOMAIN, LOC_BLOCK, |
1498 | &objfile->global_psymbols, | |
1499 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1500 | cu->language, objfile); |
c906108c SS |
1501 | } |
1502 | else | |
1503 | { | |
38d518c9 | 1504 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1505 | mst_file_text, objfile); */ |
38d518c9 | 1506 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1507 | VAR_DOMAIN, LOC_BLOCK, |
1508 | &objfile->static_psymbols, | |
1509 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1510 | cu->language, objfile); |
c906108c SS |
1511 | } |
1512 | break; | |
1513 | case DW_TAG_variable: | |
1514 | if (pdi->is_external) | |
1515 | { | |
1516 | /* Global Variable. | |
1517 | Don't enter into the minimal symbol tables as there is | |
1518 | a minimal symbol table entry from the ELF symbols already. | |
1519 | Enter into partial symbol table if it has a location | |
1520 | descriptor or a type. | |
1521 | If the location descriptor is missing, new_symbol will create | |
1522 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1523 | be determined from the minimal symbol table whenever the variable | |
1524 | is referenced. | |
1525 | The address for the partial symbol table entry is not | |
1526 | used by GDB, but it comes in handy for debugging partial symbol | |
1527 | table building. */ | |
1528 | ||
1529 | if (pdi->locdesc) | |
e7c27a73 | 1530 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1531 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1532 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1533 | VAR_DOMAIN, LOC_STATIC, |
1534 | &objfile->global_psymbols, | |
1535 | 0, addr + baseaddr, | |
e142c38c | 1536 | cu->language, objfile); |
c906108c SS |
1537 | } |
1538 | else | |
1539 | { | |
1540 | /* Static Variable. Skip symbols without location descriptors. */ | |
1541 | if (pdi->locdesc == NULL) | |
1542 | return; | |
e7c27a73 | 1543 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1544 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1545 | mst_file_data, objfile); */ |
38d518c9 | 1546 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1547 | VAR_DOMAIN, LOC_STATIC, |
1548 | &objfile->static_psymbols, | |
1549 | 0, addr + baseaddr, | |
e142c38c | 1550 | cu->language, objfile); |
c906108c SS |
1551 | } |
1552 | break; | |
1553 | case DW_TAG_typedef: | |
1554 | case DW_TAG_base_type: | |
a02abb62 | 1555 | case DW_TAG_subrange_type: |
38d518c9 | 1556 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1557 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1558 | &objfile->static_psymbols, |
e142c38c | 1559 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1560 | break; |
1561 | case DW_TAG_class_type: | |
1562 | case DW_TAG_structure_type: | |
1563 | case DW_TAG_union_type: | |
1564 | case DW_TAG_enumeration_type: | |
1565 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1566 | references. */ |
63d06c5c DC |
1567 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1568 | static vs. global. */ | |
c906108c SS |
1569 | if (pdi->has_children == 0) |
1570 | return; | |
38d518c9 | 1571 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1572 | STRUCT_DOMAIN, LOC_TYPEDEF, |
e142c38c | 1573 | cu->language == language_cplus |
63d06c5c DC |
1574 | ? &objfile->global_psymbols |
1575 | : &objfile->static_psymbols, | |
e142c38c | 1576 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1577 | |
e142c38c | 1578 | if (cu->language == language_cplus) |
c906108c SS |
1579 | { |
1580 | /* For C++, these implicitly act as typedefs as well. */ | |
38d518c9 | 1581 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1582 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1583 | &objfile->global_psymbols, |
e142c38c | 1584 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1585 | } |
1586 | break; | |
1587 | case DW_TAG_enumerator: | |
38d518c9 | 1588 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1589 | VAR_DOMAIN, LOC_CONST, |
e142c38c | 1590 | cu->language == language_cplus |
f6fe98ef DJ |
1591 | ? &objfile->global_psymbols |
1592 | : &objfile->static_psymbols, | |
e142c38c | 1593 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1594 | break; |
1595 | default: | |
1596 | break; | |
1597 | } | |
5c4e30ca DC |
1598 | |
1599 | /* Check to see if we should scan the name for possible namespace | |
1600 | info. Only do this if this is C++, if we don't have namespace | |
1601 | debugging info in the file, if the psym is of an appropriate type | |
1602 | (otherwise we'll have psym == NULL), and if we actually had a | |
1603 | mangled name to begin with. */ | |
1604 | ||
e142c38c | 1605 | if (cu->language == language_cplus |
5c4e30ca DC |
1606 | && namespace == NULL |
1607 | && psym != NULL | |
1608 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
1609 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
1610 | objfile); | |
c906108c SS |
1611 | } |
1612 | ||
63d06c5c DC |
1613 | /* Determine whether a die of type TAG living in the C++ namespace |
1614 | NAMESPACE needs to have the name of the namespace prepended to the | |
1615 | name listed in the die. */ | |
1616 | ||
1617 | static int | |
1618 | pdi_needs_namespace (enum dwarf_tag tag, const char *namespace) | |
1619 | { | |
1620 | if (namespace == NULL || namespace[0] == '\0') | |
1621 | return 0; | |
1622 | ||
1623 | switch (tag) | |
1624 | { | |
1625 | case DW_TAG_typedef: | |
1626 | case DW_TAG_class_type: | |
1627 | case DW_TAG_structure_type: | |
1628 | case DW_TAG_union_type: | |
1629 | case DW_TAG_enumeration_type: | |
1630 | case DW_TAG_enumerator: | |
1631 | return 1; | |
1632 | default: | |
1633 | return 0; | |
1634 | } | |
1635 | } | |
1636 | ||
5c4e30ca DC |
1637 | /* Read a partial die corresponding to a namespace; also, add a symbol |
1638 | corresponding to that namespace to the symbol table. NAMESPACE is | |
1639 | the name of the enclosing namespace. */ | |
91c24f0a DC |
1640 | |
1641 | static char * | |
1642 | add_partial_namespace (struct partial_die_info *pdi, char *info_ptr, | |
91c24f0a | 1643 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 1644 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1645 | { |
e7c27a73 | 1646 | struct objfile *objfile = cu->objfile; |
5c4e30ca DC |
1647 | const char *new_name = pdi->name; |
1648 | char *full_name; | |
1649 | ||
e7c27a73 DJ |
1650 | /* Calculate the full name of the namespace that we just entered. */ |
1651 | ||
5c4e30ca DC |
1652 | if (new_name == NULL) |
1653 | new_name = "(anonymous namespace)"; | |
1654 | full_name = alloca (strlen (namespace) + 2 + strlen (new_name) + 1); | |
1655 | strcpy (full_name, namespace); | |
1656 | if (*namespace != '\0') | |
1657 | strcat (full_name, "::"); | |
1658 | strcat (full_name, new_name); | |
1659 | ||
63d06c5c DC |
1660 | /* FIXME: carlton/2003-10-07: We can't just replace this by a call |
1661 | to add_partial_symbol, because we don't have a way to pass in the | |
1662 | full name to that function; that might be a flaw in | |
1663 | add_partial_symbol's interface. */ | |
5c4e30ca DC |
1664 | |
1665 | add_psymbol_to_list (full_name, strlen (full_name), | |
1666 | VAR_DOMAIN, LOC_TYPEDEF, | |
1667 | &objfile->global_psymbols, | |
e142c38c | 1668 | 0, 0, cu->language, objfile); |
5c4e30ca DC |
1669 | |
1670 | /* Now scan partial symbols in that namespace. */ | |
1671 | ||
91c24f0a | 1672 | if (pdi->has_children) |
e7c27a73 | 1673 | info_ptr = scan_partial_symbols (info_ptr, lowpc, highpc, cu, full_name); |
91c24f0a DC |
1674 | |
1675 | return info_ptr; | |
1676 | } | |
1677 | ||
63d06c5c DC |
1678 | /* Read a partial die corresponding to a class or structure. */ |
1679 | ||
1680 | static char * | |
1681 | add_partial_structure (struct partial_die_info *struct_pdi, char *info_ptr, | |
1682 | struct dwarf2_cu *cu, | |
1683 | const char *namespace) | |
1684 | { | |
1685 | bfd *abfd = cu->objfile->obfd; | |
1686 | char *actual_class_name = NULL; | |
1687 | ||
e142c38c | 1688 | if (cu->language == language_cplus |
5d51ca54 | 1689 | && (namespace == NULL || namespace[0] == '\0') |
63d06c5c DC |
1690 | && struct_pdi->name != NULL |
1691 | && struct_pdi->has_children) | |
1692 | { | |
5d51ca54 DC |
1693 | /* See if we can figure out if the class lives in a namespace |
1694 | (or is nested within another class.) We do this by looking | |
63d06c5c DC |
1695 | for a member function; its demangled name will contain |
1696 | namespace info, if there is any. */ | |
1697 | ||
1698 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
1699 | what template types look like, because the demangler | |
1700 | frequently doesn't give the same name as the debug info. We | |
1701 | could fix this by only using the demangled name to get the | |
134d01f1 | 1702 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 1703 | |
5d51ca54 DC |
1704 | /* FIXME: carlton/2004-01-23: If NAMESPACE equals "", we have |
1705 | the appropriate debug information, so it would be nice to be | |
1706 | able to avoid this hack. But NAMESPACE may not be the | |
1707 | namespace where this class was defined: NAMESPACE reflects | |
1708 | where STRUCT_PDI occurs in the tree of dies, but because of | |
1709 | DW_AT_specification, that may not actually tell us where the | |
1710 | class is defined. (See the comment in read_func_scope for an | |
1711 | example of how this could occur.) | |
1712 | ||
1713 | Unfortunately, our current partial symtab data structures are | |
1714 | completely unable to deal with DW_AT_specification. So, for | |
1715 | now, the best thing to do is to get nesting information from | |
1716 | places other than the tree structure of dies if there's any | |
1717 | chance that a DW_AT_specification is involved. :-( */ | |
1718 | ||
63d06c5c DC |
1719 | char *next_child = info_ptr; |
1720 | ||
1721 | while (1) | |
1722 | { | |
1723 | struct partial_die_info child_pdi; | |
1724 | ||
1725 | next_child = read_partial_die (&child_pdi, abfd, next_child, | |
1726 | cu); | |
1727 | if (!child_pdi.tag) | |
1728 | break; | |
1729 | if (child_pdi.tag == DW_TAG_subprogram) | |
1730 | { | |
1731 | actual_class_name = class_name_from_physname (child_pdi.name); | |
1732 | if (actual_class_name != NULL) | |
1733 | struct_pdi->name = actual_class_name; | |
1734 | break; | |
1735 | } | |
1736 | else | |
1737 | { | |
1738 | next_child = locate_pdi_sibling (&child_pdi, next_child, | |
1739 | abfd, cu); | |
1740 | } | |
1741 | } | |
1742 | } | |
1743 | ||
1744 | add_partial_symbol (struct_pdi, cu, namespace); | |
e142c38c | 1745 | xfree (actual_class_name); |
63d06c5c DC |
1746 | |
1747 | return locate_pdi_sibling (struct_pdi, info_ptr, abfd, cu); | |
1748 | } | |
1749 | ||
91c24f0a DC |
1750 | /* Read a partial die corresponding to an enumeration type. */ |
1751 | ||
1752 | static char * | |
1753 | add_partial_enumeration (struct partial_die_info *enum_pdi, char *info_ptr, | |
e7c27a73 | 1754 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1755 | { |
e7c27a73 | 1756 | struct objfile *objfile = cu->objfile; |
91c24f0a DC |
1757 | bfd *abfd = objfile->obfd; |
1758 | struct partial_die_info pdi; | |
1759 | ||
1760 | if (enum_pdi->name != NULL) | |
e7c27a73 | 1761 | add_partial_symbol (enum_pdi, cu, namespace); |
91c24f0a DC |
1762 | |
1763 | while (1) | |
1764 | { | |
e7c27a73 | 1765 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
91c24f0a DC |
1766 | if (pdi.tag == 0) |
1767 | break; | |
1768 | if (pdi.tag != DW_TAG_enumerator || pdi.name == NULL) | |
1769 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); | |
1770 | else | |
e7c27a73 | 1771 | add_partial_symbol (&pdi, cu, namespace); |
91c24f0a DC |
1772 | } |
1773 | ||
1774 | return info_ptr; | |
1775 | } | |
1776 | ||
4bb7a0a7 DJ |
1777 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
1778 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
1779 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
1780 | the initial number. */ | |
1781 | ||
1782 | static struct abbrev_info * | |
1783 | peek_die_abbrev (char *info_ptr, int *bytes_read, struct dwarf2_cu *cu) | |
1784 | { | |
1785 | bfd *abfd = cu->objfile->obfd; | |
1786 | unsigned int abbrev_number; | |
1787 | struct abbrev_info *abbrev; | |
1788 | ||
1789 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
1790 | ||
1791 | if (abbrev_number == 0) | |
1792 | return NULL; | |
1793 | ||
1794 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
1795 | if (!abbrev) | |
1796 | { | |
1797 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, | |
1798 | bfd_get_filename (abfd)); | |
1799 | } | |
1800 | ||
1801 | return abbrev; | |
1802 | } | |
1803 | ||
1804 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
1805 | pointer to the end of a series of DIEs, terminated by an empty | |
1806 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
1807 | ||
1808 | static char * | |
1809 | skip_children (char *info_ptr, struct dwarf2_cu *cu) | |
1810 | { | |
1811 | struct abbrev_info *abbrev; | |
1812 | unsigned int bytes_read; | |
1813 | ||
1814 | while (1) | |
1815 | { | |
1816 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1817 | if (abbrev == NULL) | |
1818 | return info_ptr + bytes_read; | |
1819 | else | |
1820 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
1825 | should point just after the initial uleb128 of a DIE, and the | |
1826 | abbrev corresponding to that skipped uleb128 should be passed in | |
1827 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
1828 | children. */ | |
1829 | ||
1830 | static char * | |
1831 | skip_one_die (char *info_ptr, struct abbrev_info *abbrev, | |
1832 | struct dwarf2_cu *cu) | |
1833 | { | |
1834 | unsigned int bytes_read; | |
1835 | struct attribute attr; | |
1836 | bfd *abfd = cu->objfile->obfd; | |
1837 | unsigned int form, i; | |
1838 | ||
1839 | for (i = 0; i < abbrev->num_attrs; i++) | |
1840 | { | |
1841 | /* The only abbrev we care about is DW_AT_sibling. */ | |
1842 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
1843 | { | |
1844 | read_attribute (&attr, &abbrev->attrs[i], | |
1845 | abfd, info_ptr, cu); | |
1846 | if (attr.form == DW_FORM_ref_addr) | |
1847 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); | |
1848 | else | |
1849 | return dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr, cu); | |
1850 | } | |
1851 | ||
1852 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
1853 | form = abbrev->attrs[i].form; | |
1854 | skip_attribute: | |
1855 | switch (form) | |
1856 | { | |
1857 | case DW_FORM_addr: | |
1858 | case DW_FORM_ref_addr: | |
1859 | info_ptr += cu->header.addr_size; | |
1860 | break; | |
1861 | case DW_FORM_data1: | |
1862 | case DW_FORM_ref1: | |
1863 | case DW_FORM_flag: | |
1864 | info_ptr += 1; | |
1865 | break; | |
1866 | case DW_FORM_data2: | |
1867 | case DW_FORM_ref2: | |
1868 | info_ptr += 2; | |
1869 | break; | |
1870 | case DW_FORM_data4: | |
1871 | case DW_FORM_ref4: | |
1872 | info_ptr += 4; | |
1873 | break; | |
1874 | case DW_FORM_data8: | |
1875 | case DW_FORM_ref8: | |
1876 | info_ptr += 8; | |
1877 | break; | |
1878 | case DW_FORM_string: | |
1879 | read_string (abfd, info_ptr, &bytes_read); | |
1880 | info_ptr += bytes_read; | |
1881 | break; | |
1882 | case DW_FORM_strp: | |
1883 | info_ptr += cu->header.offset_size; | |
1884 | break; | |
1885 | case DW_FORM_block: | |
1886 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1887 | info_ptr += bytes_read; | |
1888 | break; | |
1889 | case DW_FORM_block1: | |
1890 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
1891 | break; | |
1892 | case DW_FORM_block2: | |
1893 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
1894 | break; | |
1895 | case DW_FORM_block4: | |
1896 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
1897 | break; | |
1898 | case DW_FORM_sdata: | |
1899 | case DW_FORM_udata: | |
1900 | case DW_FORM_ref_udata: | |
1901 | info_ptr = skip_leb128 (abfd, info_ptr); | |
1902 | break; | |
1903 | case DW_FORM_indirect: | |
1904 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1905 | info_ptr += bytes_read; | |
1906 | /* We need to continue parsing from here, so just go back to | |
1907 | the top. */ | |
1908 | goto skip_attribute; | |
1909 | ||
1910 | default: | |
1911 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", | |
1912 | dwarf_form_name (form), | |
1913 | bfd_get_filename (abfd)); | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | if (abbrev->has_children) | |
1918 | return skip_children (info_ptr, cu); | |
1919 | else | |
1920 | return info_ptr; | |
1921 | } | |
1922 | ||
1923 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
1924 | the next DIE after ORIG_PDI. */ | |
91c24f0a DC |
1925 | |
1926 | static char * | |
1927 | locate_pdi_sibling (struct partial_die_info *orig_pdi, char *info_ptr, | |
e7c27a73 | 1928 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
1929 | { |
1930 | /* Do we know the sibling already? */ | |
1931 | ||
1932 | if (orig_pdi->sibling) | |
1933 | return orig_pdi->sibling; | |
1934 | ||
1935 | /* Are there any children to deal with? */ | |
1936 | ||
1937 | if (!orig_pdi->has_children) | |
1938 | return info_ptr; | |
1939 | ||
4bb7a0a7 | 1940 | /* Skip the children the long way. */ |
91c24f0a | 1941 | |
4bb7a0a7 | 1942 | return skip_children (info_ptr, cu); |
91c24f0a DC |
1943 | } |
1944 | ||
c906108c SS |
1945 | /* Expand this partial symbol table into a full symbol table. */ |
1946 | ||
1947 | static void | |
fba45db2 | 1948 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1949 | { |
1950 | /* FIXME: This is barely more than a stub. */ | |
1951 | if (pst != NULL) | |
1952 | { | |
1953 | if (pst->readin) | |
1954 | { | |
1955 | warning ("bug: psymtab for %s is already read in.", pst->filename); | |
1956 | } | |
1957 | else | |
1958 | { | |
1959 | if (info_verbose) | |
1960 | { | |
1961 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1962 | gdb_flush (gdb_stdout); | |
1963 | } | |
1964 | ||
1965 | psymtab_to_symtab_1 (pst); | |
1966 | ||
1967 | /* Finish up the debug error message. */ | |
1968 | if (info_verbose) | |
1969 | printf_filtered ("done.\n"); | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | static void | |
fba45db2 | 1975 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1976 | { |
1977 | struct objfile *objfile = pst->objfile; | |
1978 | bfd *abfd = objfile->obfd; | |
e7c27a73 | 1979 | struct dwarf2_cu cu; |
c906108c SS |
1980 | struct die_info *dies; |
1981 | unsigned long offset; | |
1982 | CORE_ADDR lowpc, highpc; | |
1983 | struct die_info *child_die; | |
1984 | char *info_ptr; | |
1985 | struct symtab *symtab; | |
1986 | struct cleanup *back_to; | |
0d53c4c4 | 1987 | struct attribute *attr; |
e142c38c | 1988 | CORE_ADDR baseaddr; |
c906108c SS |
1989 | |
1990 | /* Set local variables from the partial symbol table info. */ | |
c5aa993b JM |
1991 | offset = DWARF_INFO_OFFSET (pst); |
1992 | dwarf_info_buffer = DWARF_INFO_BUFFER (pst); | |
1993 | dwarf_abbrev_buffer = DWARF_ABBREV_BUFFER (pst); | |
1994 | dwarf_abbrev_size = DWARF_ABBREV_SIZE (pst); | |
1995 | dwarf_line_buffer = DWARF_LINE_BUFFER (pst); | |
9ab3e532 | 1996 | dwarf_line_size = DWARF_LINE_SIZE (pst); |
4bdf3d34 JJ |
1997 | dwarf_str_buffer = DWARF_STR_BUFFER (pst); |
1998 | dwarf_str_size = DWARF_STR_SIZE (pst); | |
2e276125 JB |
1999 | dwarf_macinfo_buffer = DWARF_MACINFO_BUFFER (pst); |
2000 | dwarf_macinfo_size = DWARF_MACINFO_SIZE (pst); | |
af34e669 DJ |
2001 | dwarf_ranges_buffer = DWARF_RANGES_BUFFER (pst); |
2002 | dwarf_ranges_size = DWARF_RANGES_SIZE (pst); | |
0d53c4c4 DJ |
2003 | dwarf_loc_buffer = DWARF_LOC_BUFFER (pst); |
2004 | dwarf_loc_size = DWARF_LOC_SIZE (pst); | |
c906108c | 2005 | info_ptr = dwarf_info_buffer + offset; |
e142c38c | 2006 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 2007 | |
63d06c5c DC |
2008 | /* We're in the global namespace. */ |
2009 | processing_current_prefix = ""; | |
2010 | ||
c906108c SS |
2011 | obstack_init (&dwarf2_tmp_obstack); |
2012 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
2013 | ||
2014 | buildsym_init (); | |
a0b3c4fd | 2015 | make_cleanup (really_free_pendings, NULL); |
c906108c | 2016 | |
e7c27a73 DJ |
2017 | cu.objfile = objfile; |
2018 | ||
c906108c | 2019 | /* read in the comp_unit header */ |
e7c27a73 | 2020 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); |
c906108c SS |
2021 | |
2022 | /* Read the abbrevs for this compilation unit */ | |
e7c27a73 | 2023 | dwarf2_read_abbrevs (abfd, &cu); |
f3dd6933 | 2024 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 2025 | |
e142c38c DJ |
2026 | cu.header.offset = offset; |
2027 | ||
2028 | cu.list_in_scope = &file_symbols; | |
2029 | ||
e7c27a73 | 2030 | dies = read_comp_unit (info_ptr, abfd, &cu); |
c906108c | 2031 | |
74b7792f | 2032 | make_cleanup_free_die_list (dies); |
c906108c | 2033 | |
0d53c4c4 DJ |
2034 | /* Find the base address of the compilation unit for range lists and |
2035 | location lists. It will normally be specified by DW_AT_low_pc. | |
2036 | In DWARF-3 draft 4, the base address could be overridden by | |
2037 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2038 | compilation units with discontinuous ranges. */ | |
2039 | ||
e7c27a73 DJ |
2040 | cu.header.base_known = 0; |
2041 | cu.header.base_address = 0; | |
0d53c4c4 | 2042 | |
e142c38c | 2043 | attr = dwarf2_attr (dies, DW_AT_entry_pc, &cu); |
0d53c4c4 DJ |
2044 | if (attr) |
2045 | { | |
e7c27a73 DJ |
2046 | cu.header.base_address = DW_ADDR (attr); |
2047 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
2048 | } |
2049 | else | |
2050 | { | |
e142c38c | 2051 | attr = dwarf2_attr (dies, DW_AT_low_pc, &cu); |
0d53c4c4 DJ |
2052 | if (attr) |
2053 | { | |
e7c27a73 DJ |
2054 | cu.header.base_address = DW_ADDR (attr); |
2055 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
2056 | } |
2057 | } | |
2058 | ||
c906108c | 2059 | /* Do line number decoding in read_file_scope () */ |
e7c27a73 | 2060 | process_die (dies, &cu); |
c906108c | 2061 | |
fae299cd DC |
2062 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2063 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2064 | it, by scanning the DIE's below the compilation unit. */ | |
2065 | get_scope_pc_bounds (dies, &lowpc, &highpc, &cu); | |
c906108c | 2066 | |
613e1657 | 2067 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2068 | |
2069 | /* Set symtab language to language from DW_AT_language. | |
2070 | If the compilation is from a C file generated by language preprocessors, | |
2071 | do not set the language if it was already deduced by start_subfile. */ | |
2072 | if (symtab != NULL | |
e142c38c | 2073 | && !(cu.language == language_c && symtab->language != language_c)) |
c906108c | 2074 | { |
e142c38c | 2075 | symtab->language = cu.language; |
c906108c SS |
2076 | } |
2077 | pst->symtab = symtab; | |
2078 | pst->readin = 1; | |
c906108c SS |
2079 | |
2080 | do_cleanups (back_to); | |
2081 | } | |
2082 | ||
2083 | /* Process a die and its children. */ | |
2084 | ||
2085 | static void | |
e7c27a73 | 2086 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2087 | { |
2088 | switch (die->tag) | |
2089 | { | |
2090 | case DW_TAG_padding: | |
2091 | break; | |
2092 | case DW_TAG_compile_unit: | |
e7c27a73 | 2093 | read_file_scope (die, cu); |
c906108c SS |
2094 | break; |
2095 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2096 | read_subroutine_type (die, cu); |
2097 | read_func_scope (die, cu); | |
c906108c SS |
2098 | break; |
2099 | case DW_TAG_inlined_subroutine: | |
2100 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2101 | They could be used to set breakpoints on all inlined instances |
2102 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2103 | break; |
2104 | case DW_TAG_lexical_block: | |
14898363 L |
2105 | case DW_TAG_try_block: |
2106 | case DW_TAG_catch_block: | |
e7c27a73 | 2107 | read_lexical_block_scope (die, cu); |
c906108c SS |
2108 | break; |
2109 | case DW_TAG_class_type: | |
2110 | case DW_TAG_structure_type: | |
2111 | case DW_TAG_union_type: | |
134d01f1 DJ |
2112 | read_structure_type (die, cu); |
2113 | process_structure_scope (die, cu); | |
c906108c SS |
2114 | break; |
2115 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2116 | read_enumeration_type (die, cu); |
2117 | process_enumeration_scope (die, cu); | |
c906108c | 2118 | break; |
134d01f1 DJ |
2119 | |
2120 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2121 | a symbol or process any children. Therefore it doesn't do anything | |
2122 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2123 | case DW_TAG_subroutine_type: |
e7c27a73 | 2124 | read_subroutine_type (die, cu); |
c906108c SS |
2125 | break; |
2126 | case DW_TAG_array_type: | |
e7c27a73 | 2127 | read_array_type (die, cu); |
c906108c SS |
2128 | break; |
2129 | case DW_TAG_pointer_type: | |
e7c27a73 | 2130 | read_tag_pointer_type (die, cu); |
c906108c SS |
2131 | break; |
2132 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2133 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2134 | break; |
2135 | case DW_TAG_reference_type: | |
e7c27a73 | 2136 | read_tag_reference_type (die, cu); |
c906108c SS |
2137 | break; |
2138 | case DW_TAG_string_type: | |
e7c27a73 | 2139 | read_tag_string_type (die, cu); |
c906108c | 2140 | break; |
134d01f1 DJ |
2141 | /* END FIXME */ |
2142 | ||
c906108c | 2143 | case DW_TAG_base_type: |
e7c27a73 | 2144 | read_base_type (die, cu); |
134d01f1 DJ |
2145 | /* Add a typedef symbol for the type definition, if it has a |
2146 | DW_AT_name. */ | |
2147 | new_symbol (die, die->type, cu); | |
c906108c | 2148 | break; |
a02abb62 JB |
2149 | case DW_TAG_subrange_type: |
2150 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2151 | /* Add a typedef symbol for the type definition, if it has a |
2152 | DW_AT_name. */ | |
2153 | new_symbol (die, die->type, cu); | |
a02abb62 | 2154 | break; |
c906108c | 2155 | case DW_TAG_common_block: |
e7c27a73 | 2156 | read_common_block (die, cu); |
c906108c SS |
2157 | break; |
2158 | case DW_TAG_common_inclusion: | |
2159 | break; | |
d9fa45fe | 2160 | case DW_TAG_namespace: |
63d06c5c | 2161 | processing_has_namespace_info = 1; |
e7c27a73 | 2162 | read_namespace (die, cu); |
d9fa45fe DC |
2163 | break; |
2164 | case DW_TAG_imported_declaration: | |
2165 | case DW_TAG_imported_module: | |
2166 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2167 | information contained in these. DW_TAG_imported_declaration | |
2168 | dies shouldn't have children; DW_TAG_imported_module dies | |
2169 | shouldn't in the C++ case, but conceivably could in the | |
2170 | Fortran case, so we'll have to replace this gdb_assert if | |
2171 | Fortran compilers start generating that info. */ | |
63d06c5c | 2172 | processing_has_namespace_info = 1; |
639d11d3 | 2173 | gdb_assert (die->child == NULL); |
d9fa45fe | 2174 | break; |
c906108c | 2175 | default: |
e7c27a73 | 2176 | new_symbol (die, NULL, cu); |
c906108c SS |
2177 | break; |
2178 | } | |
2179 | } | |
2180 | ||
5fb290d7 | 2181 | static void |
e142c38c | 2182 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2183 | { |
e142c38c | 2184 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2185 | } |
2186 | ||
c906108c | 2187 | static void |
e7c27a73 | 2188 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2189 | { |
e7c27a73 DJ |
2190 | struct objfile *objfile = cu->objfile; |
2191 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2192 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2193 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2194 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2195 | struct attribute *attr; | |
2196 | char *name = "<unknown>"; | |
2197 | char *comp_dir = NULL; | |
2198 | struct die_info *child_die; | |
2199 | bfd *abfd = objfile->obfd; | |
debd256d | 2200 | struct line_header *line_header = 0; |
e142c38c DJ |
2201 | CORE_ADDR baseaddr; |
2202 | ||
2203 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2204 | |
fae299cd | 2205 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2206 | |
2207 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2208 | from finish_block. */ | |
2acceee2 | 2209 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2210 | lowpc = highpc; |
2211 | lowpc += baseaddr; | |
2212 | highpc += baseaddr; | |
2213 | ||
e142c38c | 2214 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2215 | if (attr) |
2216 | { | |
2217 | name = DW_STRING (attr); | |
2218 | } | |
e142c38c | 2219 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2220 | if (attr) |
2221 | { | |
2222 | comp_dir = DW_STRING (attr); | |
2223 | if (comp_dir) | |
2224 | { | |
2225 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2226 | directory, get rid of it. */ | |
2227 | char *cp = strchr (comp_dir, ':'); | |
2228 | ||
2229 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2230 | comp_dir = cp + 1; | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | if (objfile->ei.entry_point >= lowpc && | |
2235 | objfile->ei.entry_point < highpc) | |
2236 | { | |
627b3ba2 AC |
2237 | objfile->ei.deprecated_entry_file_lowpc = lowpc; |
2238 | objfile->ei.deprecated_entry_file_highpc = highpc; | |
c906108c SS |
2239 | } |
2240 | ||
e142c38c | 2241 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2242 | if (attr) |
2243 | { | |
e142c38c | 2244 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2245 | } |
2246 | ||
2247 | /* We assume that we're processing GCC output. */ | |
2248 | processing_gcc_compilation = 2; | |
2249 | #if 0 | |
c5aa993b JM |
2250 | /* FIXME:Do something here. */ |
2251 | if (dip->at_producer != NULL) | |
c906108c SS |
2252 | { |
2253 | handle_producer (dip->at_producer); | |
2254 | } | |
2255 | #endif | |
2256 | ||
2257 | /* The compilation unit may be in a different language or objfile, | |
2258 | zero out all remembered fundamental types. */ | |
e142c38c | 2259 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2260 | |
2261 | start_symtab (name, comp_dir, lowpc); | |
2262 | record_debugformat ("DWARF 2"); | |
2263 | ||
e142c38c | 2264 | initialize_cu_func_list (cu); |
c906108c SS |
2265 | |
2266 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2267 | if (die->child != NULL) |
c906108c | 2268 | { |
639d11d3 | 2269 | child_die = die->child; |
c906108c SS |
2270 | while (child_die && child_die->tag) |
2271 | { | |
e7c27a73 | 2272 | process_die (child_die, cu); |
c906108c SS |
2273 | child_die = sibling_die (child_die); |
2274 | } | |
2275 | } | |
5fb290d7 DJ |
2276 | |
2277 | /* Decode line number information if present. */ | |
e142c38c | 2278 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2279 | if (attr) |
2280 | { | |
debd256d | 2281 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2282 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2283 | if (line_header) |
2284 | { | |
2285 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2286 | (void *) line_header); | |
e7c27a73 | 2287 | dwarf_decode_lines (line_header, comp_dir, abfd, cu); |
debd256d | 2288 | } |
5fb290d7 | 2289 | } |
debd256d | 2290 | |
2e276125 JB |
2291 | /* Decode macro information, if present. Dwarf 2 macro information |
2292 | refers to information in the line number info statement program | |
2293 | header, so we can only read it if we've read the header | |
2294 | successfully. */ | |
e142c38c | 2295 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2296 | if (attr && line_header) |
2e276125 JB |
2297 | { |
2298 | unsigned int macro_offset = DW_UNSND (attr); | |
2299 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2300 | comp_dir, abfd, cu); |
2e276125 | 2301 | } |
debd256d | 2302 | do_cleanups (back_to); |
5fb290d7 DJ |
2303 | } |
2304 | ||
2305 | static void | |
e142c38c DJ |
2306 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2307 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2308 | { |
2309 | struct function_range *thisfn; | |
2310 | ||
2311 | thisfn = (struct function_range *) | |
2312 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct function_range)); | |
2313 | thisfn->name = name; | |
2314 | thisfn->lowpc = lowpc; | |
2315 | thisfn->highpc = highpc; | |
2316 | thisfn->seen_line = 0; | |
2317 | thisfn->next = NULL; | |
2318 | ||
e142c38c DJ |
2319 | if (cu->last_fn == NULL) |
2320 | cu->first_fn = thisfn; | |
5fb290d7 | 2321 | else |
e142c38c | 2322 | cu->last_fn->next = thisfn; |
5fb290d7 | 2323 | |
e142c38c | 2324 | cu->last_fn = thisfn; |
c906108c SS |
2325 | } |
2326 | ||
2327 | static void | |
e7c27a73 | 2328 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2329 | { |
e7c27a73 | 2330 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2331 | struct context_stack *new; |
c906108c SS |
2332 | CORE_ADDR lowpc; |
2333 | CORE_ADDR highpc; | |
2334 | struct die_info *child_die; | |
2335 | struct attribute *attr; | |
2336 | char *name; | |
fdde2d81 DC |
2337 | const char *previous_prefix = processing_current_prefix; |
2338 | struct cleanup *back_to = NULL; | |
e142c38c | 2339 | CORE_ADDR baseaddr; |
c906108c | 2340 | |
e142c38c DJ |
2341 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2342 | ||
2343 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2344 | |
2345 | /* Ignore functions with missing or empty names and functions with | |
2346 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2347 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2348 | return; |
2349 | ||
086ed43d | 2350 | if (cu->language == language_cplus) |
fdde2d81 | 2351 | { |
086ed43d | 2352 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2353 | |
2a35147e JB |
2354 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2355 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2356 | given the code | |
2357 | ||
2358 | namespace N { | |
2359 | void foo() { | |
2360 | // Definition of N::foo. | |
2361 | } | |
2362 | } | |
2363 | ||
2364 | then we'll have a tree of DIEs like this: | |
2365 | ||
2366 | 1: DW_TAG_compile_unit | |
2367 | 2: DW_TAG_namespace // N | |
2368 | 3: DW_TAG_subprogram // declaration of N::foo | |
2369 | 4: DW_TAG_subprogram // definition of N::foo | |
2370 | DW_AT_specification // refers to die #3 | |
2371 | ||
2372 | Thus, when processing die #4, we have to pretend that we're | |
2373 | in the context of its DW_AT_specification, namely the contex | |
2374 | of die #3. */ | |
fdde2d81 DC |
2375 | |
2376 | if (spec_die != NULL) | |
2377 | { | |
e142c38c | 2378 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2379 | processing_current_prefix = specification_prefix; |
2380 | back_to = make_cleanup (xfree, specification_prefix); | |
2381 | } | |
2382 | } | |
2383 | ||
c906108c SS |
2384 | lowpc += baseaddr; |
2385 | highpc += baseaddr; | |
2386 | ||
5fb290d7 | 2387 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2388 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2389 | |
c906108c SS |
2390 | if (objfile->ei.entry_point >= lowpc && |
2391 | objfile->ei.entry_point < highpc) | |
2392 | { | |
2393 | objfile->ei.entry_func_lowpc = lowpc; | |
2394 | objfile->ei.entry_func_highpc = highpc; | |
2395 | } | |
2396 | ||
c906108c | 2397 | new = push_context (0, lowpc); |
e7c27a73 | 2398 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2399 | |
4cecd739 DJ |
2400 | /* If there is a location expression for DW_AT_frame_base, record |
2401 | it. */ | |
e142c38c | 2402 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2403 | if (attr) |
c034e007 AC |
2404 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2405 | expression is being recorded directly in the function's symbol | |
2406 | and not in a separate frame-base object. I guess this hack is | |
2407 | to avoid adding some sort of frame-base adjunct/annex to the | |
2408 | function's symbol :-(. The problem with doing this is that it | |
2409 | results in a function symbol with a location expression that | |
2410 | has nothing to do with the location of the function, ouch! The | |
2411 | relationship should be: a function's symbol has-a frame base; a | |
2412 | frame-base has-a location expression. */ | |
e7c27a73 | 2413 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2414 | |
e142c38c | 2415 | cu->list_in_scope = &local_symbols; |
c906108c | 2416 | |
639d11d3 | 2417 | if (die->child != NULL) |
c906108c | 2418 | { |
639d11d3 | 2419 | child_die = die->child; |
c906108c SS |
2420 | while (child_die && child_die->tag) |
2421 | { | |
e7c27a73 | 2422 | process_die (child_die, cu); |
c906108c SS |
2423 | child_die = sibling_die (child_die); |
2424 | } | |
2425 | } | |
2426 | ||
2427 | new = pop_context (); | |
2428 | /* Make a block for the local symbols within. */ | |
2429 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2430 | lowpc, highpc, objfile); | |
208d8187 JB |
2431 | |
2432 | /* In C++, we can have functions nested inside functions (e.g., when | |
2433 | a function declares a class that has methods). This means that | |
2434 | when we finish processing a function scope, we may need to go | |
2435 | back to building a containing block's symbol lists. */ | |
2436 | local_symbols = new->locals; | |
2437 | param_symbols = new->params; | |
2438 | ||
921e78cf JB |
2439 | /* If we've finished processing a top-level function, subsequent |
2440 | symbols go in the file symbol list. */ | |
2441 | if (outermost_context_p ()) | |
e142c38c | 2442 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2443 | |
2444 | processing_current_prefix = previous_prefix; | |
2445 | if (back_to != NULL) | |
2446 | do_cleanups (back_to); | |
c906108c SS |
2447 | } |
2448 | ||
2449 | /* Process all the DIES contained within a lexical block scope. Start | |
2450 | a new scope, process the dies, and then close the scope. */ | |
2451 | ||
2452 | static void | |
e7c27a73 | 2453 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2454 | { |
e7c27a73 | 2455 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2456 | struct context_stack *new; |
c906108c SS |
2457 | CORE_ADDR lowpc, highpc; |
2458 | struct die_info *child_die; | |
e142c38c DJ |
2459 | CORE_ADDR baseaddr; |
2460 | ||
2461 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2462 | |
2463 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
2464 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
2465 | as multiple lexical blocks? Handling children in a sane way would | |
2466 | be nasty. Might be easier to properly extend generic blocks to | |
2467 | describe ranges. */ | |
e7c27a73 | 2468 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2469 | return; |
2470 | lowpc += baseaddr; | |
2471 | highpc += baseaddr; | |
2472 | ||
2473 | push_context (0, lowpc); | |
639d11d3 | 2474 | if (die->child != NULL) |
c906108c | 2475 | { |
639d11d3 | 2476 | child_die = die->child; |
c906108c SS |
2477 | while (child_die && child_die->tag) |
2478 | { | |
e7c27a73 | 2479 | process_die (child_die, cu); |
c906108c SS |
2480 | child_die = sibling_die (child_die); |
2481 | } | |
2482 | } | |
2483 | new = pop_context (); | |
2484 | ||
2485 | if (local_symbols != NULL) | |
2486 | { | |
2487 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
2488 | highpc, objfile); | |
2489 | } | |
2490 | local_symbols = new->locals; | |
2491 | } | |
2492 | ||
af34e669 DJ |
2493 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
2494 | are present and valid, otherwise, return 0. Return -1 if the range is | |
2495 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 2496 | static int |
af34e669 | 2497 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 2498 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 2499 | { |
e7c27a73 DJ |
2500 | struct objfile *objfile = cu->objfile; |
2501 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 2502 | struct attribute *attr; |
af34e669 DJ |
2503 | bfd *obfd = objfile->obfd; |
2504 | CORE_ADDR low = 0; | |
2505 | CORE_ADDR high = 0; | |
2506 | int ret = 0; | |
c906108c | 2507 | |
e142c38c | 2508 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 2509 | if (attr) |
af34e669 DJ |
2510 | { |
2511 | high = DW_ADDR (attr); | |
e142c38c | 2512 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
2513 | if (attr) |
2514 | low = DW_ADDR (attr); | |
2515 | else | |
2516 | /* Found high w/o low attribute. */ | |
2517 | return 0; | |
2518 | ||
2519 | /* Found consecutive range of addresses. */ | |
2520 | ret = 1; | |
2521 | } | |
c906108c | 2522 | else |
af34e669 | 2523 | { |
e142c38c | 2524 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
2525 | if (attr != NULL) |
2526 | { | |
2527 | unsigned int addr_size = cu_header->addr_size; | |
2528 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
2529 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 2530 | .debug_ranges section. */ |
af34e669 DJ |
2531 | unsigned int offset = DW_UNSND (attr); |
2532 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
2533 | CORE_ADDR base; |
2534 | int found_base; | |
af34e669 | 2535 | int dummy; |
af34e669 DJ |
2536 | char *buffer; |
2537 | CORE_ADDR marker; | |
2538 | int low_set; | |
2539 | ||
0d53c4c4 DJ |
2540 | found_base = cu_header->base_known; |
2541 | base = cu_header->base_address; | |
a604369a KB |
2542 | |
2543 | if (offset >= dwarf_ranges_size) | |
2544 | { | |
2545 | complaint (&symfile_complaints, | |
2546 | "Offset %d out of bounds for DW_AT_ranges attribute", | |
2547 | offset); | |
2548 | return 0; | |
2549 | } | |
af34e669 DJ |
2550 | buffer = dwarf_ranges_buffer + offset; |
2551 | ||
af34e669 | 2552 | /* Read in the largest possible address. */ |
e7c27a73 | 2553 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2554 | if ((marker & mask) == mask) |
2555 | { | |
2556 | /* If we found the largest possible address, then | |
2557 | read the base address. */ | |
e7c27a73 | 2558 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2559 | buffer += 2 * addr_size; |
2560 | offset += 2 * addr_size; | |
2561 | found_base = 1; | |
2562 | } | |
2563 | ||
2564 | low_set = 0; | |
2565 | ||
2566 | while (1) | |
2567 | { | |
2568 | CORE_ADDR range_beginning, range_end; | |
2569 | ||
e7c27a73 | 2570 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 2571 | buffer += addr_size; |
e7c27a73 | 2572 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2573 | buffer += addr_size; |
2574 | offset += 2 * addr_size; | |
2575 | ||
2576 | /* An end of list marker is a pair of zero addresses. */ | |
2577 | if (range_beginning == 0 && range_end == 0) | |
2578 | /* Found the end of list entry. */ | |
2579 | break; | |
2580 | ||
2581 | /* Each base address selection entry is a pair of 2 values. | |
2582 | The first is the largest possible address, the second is | |
2583 | the base address. Check for a base address here. */ | |
2584 | if ((range_beginning & mask) == mask) | |
2585 | { | |
2586 | /* If we found the largest possible address, then | |
2587 | read the base address. */ | |
e7c27a73 | 2588 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2589 | found_base = 1; |
2590 | continue; | |
2591 | } | |
2592 | ||
2593 | if (!found_base) | |
2594 | { | |
2595 | /* We have no valid base address for the ranges | |
2596 | data. */ | |
2597 | complaint (&symfile_complaints, | |
2598 | "Invalid .debug_ranges data (no base address)"); | |
2599 | return 0; | |
2600 | } | |
2601 | ||
8f05cde5 DJ |
2602 | range_beginning += base; |
2603 | range_end += base; | |
2604 | ||
af34e669 DJ |
2605 | /* FIXME: This is recording everything as a low-high |
2606 | segment of consecutive addresses. We should have a | |
2607 | data structure for discontiguous block ranges | |
2608 | instead. */ | |
2609 | if (! low_set) | |
2610 | { | |
2611 | low = range_beginning; | |
2612 | high = range_end; | |
2613 | low_set = 1; | |
2614 | } | |
2615 | else | |
2616 | { | |
2617 | if (range_beginning < low) | |
2618 | low = range_beginning; | |
2619 | if (range_end > high) | |
2620 | high = range_end; | |
2621 | } | |
2622 | } | |
2623 | ||
2624 | if (! low_set) | |
2625 | /* If the first entry is an end-of-list marker, the range | |
2626 | describes an empty scope, i.e. no instructions. */ | |
2627 | return 0; | |
2628 | ||
2629 | ret = -1; | |
2630 | } | |
2631 | } | |
c906108c SS |
2632 | |
2633 | if (high < low) | |
2634 | return 0; | |
2635 | ||
2636 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
2637 | eliminate duplicate copies of functions and vtables and such. | |
2638 | The linker will arbitrarily choose one and discard the others. | |
2639 | The AT_*_pc values for such functions refer to local labels in | |
2640 | these sections. If the section from that file was discarded, the | |
2641 | labels are not in the output, so the relocs get a value of 0. | |
2642 | If this is a discarded function, mark the pc bounds as invalid, | |
2643 | so that GDB will ignore it. */ | |
af34e669 | 2644 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
2645 | return 0; |
2646 | ||
2647 | *lowpc = low; | |
2648 | *highpc = high; | |
af34e669 | 2649 | return ret; |
c906108c SS |
2650 | } |
2651 | ||
fae299cd DC |
2652 | /* Get the low and high pc's represented by the scope DIE, and store |
2653 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
2654 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
2655 | ||
2656 | static void | |
2657 | get_scope_pc_bounds (struct die_info *die, | |
2658 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
2659 | struct dwarf2_cu *cu) | |
2660 | { | |
2661 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
2662 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
2663 | CORE_ADDR current_low, current_high; | |
2664 | ||
2665 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
2666 | { | |
2667 | best_low = current_low; | |
2668 | best_high = current_high; | |
2669 | } | |
2670 | else | |
2671 | { | |
2672 | struct die_info *child = die->child; | |
2673 | ||
2674 | while (child && child->tag) | |
2675 | { | |
2676 | switch (child->tag) { | |
2677 | case DW_TAG_subprogram: | |
2678 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
2679 | { | |
2680 | best_low = min (best_low, current_low); | |
2681 | best_high = max (best_high, current_high); | |
2682 | } | |
2683 | break; | |
2684 | case DW_TAG_namespace: | |
2685 | /* FIXME: carlton/2004-01-16: Should we do this for | |
2686 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
2687 | that current GCC's always emit the DIEs corresponding | |
2688 | to definitions of methods of classes as children of a | |
2689 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
2690 | the DIEs giving the declarations, which could be | |
2691 | anywhere). But I don't see any reason why the | |
2692 | standards says that they have to be there. */ | |
2693 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
2694 | ||
2695 | if (current_low != ((CORE_ADDR) -1)) | |
2696 | { | |
2697 | best_low = min (best_low, current_low); | |
2698 | best_high = max (best_high, current_high); | |
2699 | } | |
2700 | break; | |
2701 | default: | |
2702 | /* Ignore. */ | |
2703 | break; | |
2704 | } | |
2705 | ||
2706 | child = sibling_die (child); | |
2707 | } | |
2708 | } | |
2709 | ||
2710 | *lowpc = best_low; | |
2711 | *highpc = best_high; | |
2712 | } | |
2713 | ||
c906108c SS |
2714 | /* Add an aggregate field to the field list. */ |
2715 | ||
2716 | static void | |
107d2387 | 2717 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
2718 | struct dwarf2_cu *cu) |
2719 | { | |
2720 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
2721 | struct nextfield *new_field; |
2722 | struct attribute *attr; | |
2723 | struct field *fp; | |
2724 | char *fieldname = ""; | |
2725 | ||
2726 | /* Allocate a new field list entry and link it in. */ | |
2727 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2728 | make_cleanup (xfree, new_field); |
c906108c SS |
2729 | memset (new_field, 0, sizeof (struct nextfield)); |
2730 | new_field->next = fip->fields; | |
2731 | fip->fields = new_field; | |
2732 | fip->nfields++; | |
2733 | ||
2734 | /* Handle accessibility and virtuality of field. | |
2735 | The default accessibility for members is public, the default | |
2736 | accessibility for inheritance is private. */ | |
2737 | if (die->tag != DW_TAG_inheritance) | |
2738 | new_field->accessibility = DW_ACCESS_public; | |
2739 | else | |
2740 | new_field->accessibility = DW_ACCESS_private; | |
2741 | new_field->virtuality = DW_VIRTUALITY_none; | |
2742 | ||
e142c38c | 2743 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2744 | if (attr) |
2745 | new_field->accessibility = DW_UNSND (attr); | |
2746 | if (new_field->accessibility != DW_ACCESS_public) | |
2747 | fip->non_public_fields = 1; | |
e142c38c | 2748 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
2749 | if (attr) |
2750 | new_field->virtuality = DW_UNSND (attr); | |
2751 | ||
2752 | fp = &new_field->field; | |
a9a9bd0f | 2753 | |
e142c38c | 2754 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 2755 | { |
a9a9bd0f DC |
2756 | /* Data member other than a C++ static data member. */ |
2757 | ||
c906108c | 2758 | /* Get type of field. */ |
e7c27a73 | 2759 | fp->type = die_type (die, cu); |
c906108c | 2760 | |
01ad7f36 DJ |
2761 | FIELD_STATIC_KIND (*fp) = 0; |
2762 | ||
c906108c | 2763 | /* Get bit size of field (zero if none). */ |
e142c38c | 2764 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
2765 | if (attr) |
2766 | { | |
2767 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
2768 | } | |
2769 | else | |
2770 | { | |
2771 | FIELD_BITSIZE (*fp) = 0; | |
2772 | } | |
2773 | ||
2774 | /* Get bit offset of field. */ | |
e142c38c | 2775 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
2776 | if (attr) |
2777 | { | |
2778 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 2779 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
2780 | } |
2781 | else | |
2782 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 2783 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
2784 | if (attr) |
2785 | { | |
2786 | if (BITS_BIG_ENDIAN) | |
2787 | { | |
2788 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
2789 | additional bit offset from the MSB of the containing |
2790 | anonymous object to the MSB of the field. We don't | |
2791 | have to do anything special since we don't need to | |
2792 | know the size of the anonymous object. */ | |
c906108c SS |
2793 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
2794 | } | |
2795 | else | |
2796 | { | |
2797 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
2798 | MSB of the anonymous object, subtract off the number of |
2799 | bits from the MSB of the field to the MSB of the | |
2800 | object, and then subtract off the number of bits of | |
2801 | the field itself. The result is the bit offset of | |
2802 | the LSB of the field. */ | |
c906108c SS |
2803 | int anonymous_size; |
2804 | int bit_offset = DW_UNSND (attr); | |
2805 | ||
e142c38c | 2806 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
2807 | if (attr) |
2808 | { | |
2809 | /* The size of the anonymous object containing | |
2810 | the bit field is explicit, so use the | |
2811 | indicated size (in bytes). */ | |
2812 | anonymous_size = DW_UNSND (attr); | |
2813 | } | |
2814 | else | |
2815 | { | |
2816 | /* The size of the anonymous object containing | |
2817 | the bit field must be inferred from the type | |
2818 | attribute of the data member containing the | |
2819 | bit field. */ | |
2820 | anonymous_size = TYPE_LENGTH (fp->type); | |
2821 | } | |
2822 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
2823 | - bit_offset - FIELD_BITSIZE (*fp); | |
2824 | } | |
2825 | } | |
2826 | ||
2827 | /* Get name of field. */ | |
e142c38c | 2828 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2829 | if (attr && DW_STRING (attr)) |
2830 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
2831 | |
2832 | /* The name is already allocated along with this objfile, so we don't | |
2833 | need to duplicate it for the type. */ | |
2834 | fp->name = fieldname; | |
c906108c SS |
2835 | |
2836 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 2837 | pointer or virtual base class pointer) to private. */ |
e142c38c | 2838 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
2839 | { |
2840 | new_field->accessibility = DW_ACCESS_private; | |
2841 | fip->non_public_fields = 1; | |
2842 | } | |
2843 | } | |
a9a9bd0f | 2844 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 2845 | { |
a9a9bd0f DC |
2846 | /* C++ static member. */ |
2847 | ||
2848 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
2849 | is a declaration, but all versions of G++ as of this writing | |
2850 | (so through at least 3.2.1) incorrectly generate | |
2851 | DW_TAG_variable tags. */ | |
2852 | ||
c906108c | 2853 | char *physname; |
c906108c | 2854 | |
a9a9bd0f | 2855 | /* Get name of field. */ |
e142c38c | 2856 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2857 | if (attr && DW_STRING (attr)) |
2858 | fieldname = DW_STRING (attr); | |
2859 | else | |
c906108c SS |
2860 | return; |
2861 | ||
2df3850c | 2862 | /* Get physical name. */ |
e142c38c | 2863 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 2864 | |
d8151005 DJ |
2865 | /* The name is already allocated along with this objfile, so we don't |
2866 | need to duplicate it for the type. */ | |
2867 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 2868 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 2869 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
2870 | } |
2871 | else if (die->tag == DW_TAG_inheritance) | |
2872 | { | |
2873 | /* C++ base class field. */ | |
e142c38c | 2874 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 2875 | if (attr) |
e7c27a73 | 2876 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 2877 | * bits_per_byte); |
c906108c | 2878 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 2879 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 2880 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
2881 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
2882 | fip->nbaseclasses++; | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | /* Create the vector of fields, and attach it to the type. */ | |
2887 | ||
2888 | static void | |
fba45db2 | 2889 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 2890 | struct dwarf2_cu *cu) |
c906108c SS |
2891 | { |
2892 | int nfields = fip->nfields; | |
2893 | ||
2894 | /* Record the field count, allocate space for the array of fields, | |
2895 | and create blank accessibility bitfields if necessary. */ | |
2896 | TYPE_NFIELDS (type) = nfields; | |
2897 | TYPE_FIELDS (type) = (struct field *) | |
2898 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2899 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
2900 | ||
2901 | if (fip->non_public_fields) | |
2902 | { | |
2903 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2904 | ||
2905 | TYPE_FIELD_PRIVATE_BITS (type) = | |
2906 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2907 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
2908 | ||
2909 | TYPE_FIELD_PROTECTED_BITS (type) = | |
2910 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2911 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
2912 | ||
2913 | TYPE_FIELD_IGNORE_BITS (type) = | |
2914 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2915 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
2916 | } | |
2917 | ||
2918 | /* If the type has baseclasses, allocate and clear a bit vector for | |
2919 | TYPE_FIELD_VIRTUAL_BITS. */ | |
2920 | if (fip->nbaseclasses) | |
2921 | { | |
2922 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
2923 | char *pointer; | |
2924 | ||
2925 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2926 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
2927 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
2928 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); | |
2929 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
2930 | } | |
2931 | ||
2932 | /* Copy the saved-up fields into the field vector. Start from the head | |
2933 | of the list, adding to the tail of the field array, so that they end | |
2934 | up in the same order in the array in which they were added to the list. */ | |
2935 | while (nfields-- > 0) | |
2936 | { | |
2937 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
2938 | switch (fip->fields->accessibility) | |
2939 | { | |
c5aa993b JM |
2940 | case DW_ACCESS_private: |
2941 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
2942 | break; | |
c906108c | 2943 | |
c5aa993b JM |
2944 | case DW_ACCESS_protected: |
2945 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
2946 | break; | |
c906108c | 2947 | |
c5aa993b JM |
2948 | case DW_ACCESS_public: |
2949 | break; | |
c906108c | 2950 | |
c5aa993b JM |
2951 | default: |
2952 | /* Unknown accessibility. Complain and treat it as public. */ | |
2953 | { | |
4d3c2250 KB |
2954 | complaint (&symfile_complaints, "unsupported accessibility %d", |
2955 | fip->fields->accessibility); | |
c5aa993b JM |
2956 | } |
2957 | break; | |
c906108c SS |
2958 | } |
2959 | if (nfields < fip->nbaseclasses) | |
2960 | { | |
2961 | switch (fip->fields->virtuality) | |
2962 | { | |
c5aa993b JM |
2963 | case DW_VIRTUALITY_virtual: |
2964 | case DW_VIRTUALITY_pure_virtual: | |
2965 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
2966 | break; | |
c906108c SS |
2967 | } |
2968 | } | |
2969 | fip->fields = fip->fields->next; | |
2970 | } | |
2971 | } | |
2972 | ||
c906108c SS |
2973 | /* Add a member function to the proper fieldlist. */ |
2974 | ||
2975 | static void | |
107d2387 | 2976 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 2977 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 2978 | { |
e7c27a73 | 2979 | struct objfile *objfile = cu->objfile; |
c906108c SS |
2980 | struct attribute *attr; |
2981 | struct fnfieldlist *flp; | |
2982 | int i; | |
2983 | struct fn_field *fnp; | |
2984 | char *fieldname; | |
2985 | char *physname; | |
2986 | struct nextfnfield *new_fnfield; | |
2987 | ||
2df3850c | 2988 | /* Get name of member function. */ |
e142c38c | 2989 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2990 | if (attr && DW_STRING (attr)) |
2991 | fieldname = DW_STRING (attr); | |
c906108c | 2992 | else |
2df3850c | 2993 | return; |
c906108c | 2994 | |
2df3850c | 2995 | /* Get the mangled name. */ |
e142c38c | 2996 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
2997 | |
2998 | /* Look up member function name in fieldlist. */ | |
2999 | for (i = 0; i < fip->nfnfields; i++) | |
3000 | { | |
27bfe10e | 3001 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3002 | break; |
3003 | } | |
3004 | ||
3005 | /* Create new list element if necessary. */ | |
3006 | if (i < fip->nfnfields) | |
3007 | flp = &fip->fnfieldlists[i]; | |
3008 | else | |
3009 | { | |
3010 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3011 | { | |
3012 | fip->fnfieldlists = (struct fnfieldlist *) | |
3013 | xrealloc (fip->fnfieldlists, | |
3014 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3015 | * sizeof (struct fnfieldlist)); |
c906108c | 3016 | if (fip->nfnfields == 0) |
c13c43fd | 3017 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3018 | } |
3019 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3020 | flp->name = fieldname; | |
3021 | flp->length = 0; | |
3022 | flp->head = NULL; | |
3023 | fip->nfnfields++; | |
3024 | } | |
3025 | ||
3026 | /* Create a new member function field and chain it to the field list | |
3027 | entry. */ | |
3028 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3029 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3030 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3031 | new_fnfield->next = flp->head; | |
3032 | flp->head = new_fnfield; | |
3033 | flp->length++; | |
3034 | ||
3035 | /* Fill in the member function field info. */ | |
3036 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3037 | /* The name is already allocated along with this objfile, so we don't |
3038 | need to duplicate it for the type. */ | |
3039 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3040 | fnp->type = alloc_type (objfile); |
3041 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3042 | { | |
c906108c | 3043 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3044 | |
e26fb1d7 DC |
3045 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3046 | of the method itself (TYPE_CODE_METHOD). */ | |
3047 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3048 | TYPE_TARGET_TYPE (die->type), |
3049 | TYPE_FIELDS (die->type), | |
3050 | TYPE_NFIELDS (die->type), | |
3051 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3052 | |
3053 | /* Handle static member functions. | |
c5aa993b JM |
3054 | Dwarf2 has no clean way to discern C++ static and non-static |
3055 | member functions. G++ helps GDB by marking the first | |
3056 | parameter for non-static member functions (which is the | |
3057 | this pointer) as artificial. We obtain this information | |
3058 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3059 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3060 | fnp->voffset = VOFFSET_STATIC; | |
3061 | } | |
3062 | else | |
4d3c2250 KB |
3063 | complaint (&symfile_complaints, "member function type missing for '%s'", |
3064 | physname); | |
c906108c SS |
3065 | |
3066 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3067 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3068 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3069 | |
3070 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3071 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3072 | ||
3073 | /* Get accessibility. */ | |
e142c38c | 3074 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3075 | if (attr) |
3076 | { | |
3077 | switch (DW_UNSND (attr)) | |
3078 | { | |
c5aa993b JM |
3079 | case DW_ACCESS_private: |
3080 | fnp->is_private = 1; | |
3081 | break; | |
3082 | case DW_ACCESS_protected: | |
3083 | fnp->is_protected = 1; | |
3084 | break; | |
c906108c SS |
3085 | } |
3086 | } | |
3087 | ||
b02dede2 | 3088 | /* Check for artificial methods. */ |
e142c38c | 3089 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3090 | if (attr && DW_UNSND (attr) != 0) |
3091 | fnp->is_artificial = 1; | |
3092 | ||
c906108c | 3093 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3094 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3095 | if (attr) |
8e19ed76 PS |
3096 | { |
3097 | /* Support the .debug_loc offsets */ | |
3098 | if (attr_form_is_block (attr)) | |
3099 | { | |
e7c27a73 | 3100 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3101 | } |
3102 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3103 | { | |
4d3c2250 | 3104 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3105 | } |
3106 | else | |
3107 | { | |
4d3c2250 KB |
3108 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3109 | fieldname); | |
8e19ed76 PS |
3110 | } |
3111 | } | |
c906108c SS |
3112 | } |
3113 | ||
3114 | /* Create the vector of member function fields, and attach it to the type. */ | |
3115 | ||
3116 | static void | |
fba45db2 | 3117 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3118 | struct dwarf2_cu *cu) |
c906108c SS |
3119 | { |
3120 | struct fnfieldlist *flp; | |
3121 | int total_length = 0; | |
3122 | int i; | |
3123 | ||
3124 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3125 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3126 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3127 | ||
3128 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3129 | { | |
3130 | struct nextfnfield *nfp = flp->head; | |
3131 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3132 | int k; | |
3133 | ||
3134 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3135 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3136 | fn_flp->fn_fields = (struct fn_field *) | |
3137 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3138 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3139 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3140 | |
3141 | total_length += flp->length; | |
3142 | } | |
3143 | ||
3144 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3145 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3146 | } | |
3147 | ||
3148 | /* Called when we find the DIE that starts a structure or union scope | |
3149 | (definition) to process all dies that define the members of the | |
3150 | structure or union. | |
3151 | ||
3152 | NOTE: we need to call struct_type regardless of whether or not the | |
3153 | DIE has an at_name attribute, since it might be an anonymous | |
3154 | structure or union. This gets the type entered into our set of | |
3155 | user defined types. | |
3156 | ||
3157 | However, if the structure is incomplete (an opaque struct/union) | |
3158 | then suppress creating a symbol table entry for it since gdb only | |
3159 | wants to find the one with the complete definition. Note that if | |
3160 | it is complete, we just call new_symbol, which does it's own | |
3161 | checking about whether the struct/union is anonymous or not (and | |
3162 | suppresses creating a symbol table entry itself). */ | |
3163 | ||
3164 | static void | |
134d01f1 | 3165 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3166 | { |
e7c27a73 | 3167 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3168 | struct type *type; |
3169 | struct attribute *attr; | |
d8151005 | 3170 | char *name = NULL; |
63d06c5c DC |
3171 | const char *previous_prefix = processing_current_prefix; |
3172 | struct cleanup *back_to = NULL; | |
3173 | /* This says whether or not we want to try to update the structure's | |
3174 | name to include enclosing namespace/class information, if | |
3175 | any. */ | |
3176 | int need_to_update_name = 0; | |
c906108c | 3177 | |
134d01f1 DJ |
3178 | if (die->type) |
3179 | return; | |
3180 | ||
c906108c SS |
3181 | type = alloc_type (objfile); |
3182 | ||
3183 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3184 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3185 | if (attr && DW_STRING (attr)) |
3186 | { | |
63d06c5c DC |
3187 | name = DW_STRING (attr); |
3188 | ||
e142c38c | 3189 | if (cu->language == language_cplus) |
63d06c5c | 3190 | { |
e142c38c | 3191 | struct die_info *spec_die = die_specification (die, cu); |
63d06c5c DC |
3192 | |
3193 | if (spec_die != NULL) | |
3194 | { | |
e142c38c | 3195 | char *specification_prefix = determine_prefix (spec_die, cu); |
63d06c5c DC |
3196 | processing_current_prefix = specification_prefix; |
3197 | back_to = make_cleanup (xfree, specification_prefix); | |
3198 | } | |
3199 | } | |
3200 | ||
3201 | if (processing_has_namespace_info) | |
3202 | { | |
3203 | /* FIXME: carlton/2003-11-10: This variable exists only for | |
3204 | const-correctness reasons. When I tried to change | |
3205 | TYPE_TAG_NAME to be a const char *, I ran into a cascade | |
3206 | of changes which would have forced decode_line_1 to take | |
3207 | a const char **. */ | |
b99607ea | 3208 | char *new_prefix = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3209 | processing_current_prefix, |
3210 | processing_current_prefix[0] == '\0' | |
3211 | ? "" : "::", | |
3212 | name); | |
3213 | TYPE_TAG_NAME (type) = new_prefix; | |
3214 | processing_current_prefix = new_prefix; | |
3215 | } | |
3216 | else | |
3217 | { | |
d8151005 DJ |
3218 | /* The name is already allocated along with this objfile, so |
3219 | we don't need to duplicate it for the type. */ | |
3220 | TYPE_TAG_NAME (type) = name; | |
e142c38c | 3221 | need_to_update_name = (cu->language == language_cplus); |
63d06c5c | 3222 | } |
c906108c SS |
3223 | } |
3224 | ||
3225 | if (die->tag == DW_TAG_structure_type) | |
3226 | { | |
3227 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3228 | } | |
3229 | else if (die->tag == DW_TAG_union_type) | |
3230 | { | |
3231 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3232 | } | |
3233 | else | |
3234 | { | |
3235 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3236 | in gdbtypes.h. */ |
c906108c SS |
3237 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3238 | } | |
3239 | ||
e142c38c | 3240 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3241 | if (attr) |
3242 | { | |
3243 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3244 | } | |
3245 | else | |
3246 | { | |
3247 | TYPE_LENGTH (type) = 0; | |
3248 | } | |
3249 | ||
3250 | /* We need to add the type field to the die immediately so we don't | |
3251 | infinitely recurse when dealing with pointers to the structure | |
3252 | type within the structure itself. */ | |
3253 | die->type = type; | |
3254 | ||
e142c38c | 3255 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3256 | { |
3257 | struct field_info fi; | |
3258 | struct die_info *child_die; | |
3259 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3260 | ||
3261 | memset (&fi, 0, sizeof (struct field_info)); | |
3262 | ||
639d11d3 | 3263 | child_die = die->child; |
c906108c SS |
3264 | |
3265 | while (child_die && child_die->tag) | |
3266 | { | |
a9a9bd0f DC |
3267 | if (child_die->tag == DW_TAG_member |
3268 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3269 | { |
a9a9bd0f DC |
3270 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3271 | should be a DW_TAG_member that is a declaration, but | |
3272 | all versions of G++ as of this writing (so through at | |
3273 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3274 | tags for them instead. */ | |
e7c27a73 | 3275 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3276 | } |
8713b1b1 | 3277 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3278 | { |
3279 | /* C++ member function. */ | |
134d01f1 | 3280 | read_type_die (child_die, cu); |
e7c27a73 | 3281 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
63d06c5c DC |
3282 | if (need_to_update_name) |
3283 | { | |
3284 | /* The demangled names of member functions contain | |
3285 | information about enclosing namespaces/classes, | |
3286 | if any. */ | |
3287 | ||
3288 | /* FIXME: carlton/2003-11-10: The excessive | |
3289 | demangling here is a bit wasteful, as is the | |
3290 | memory usage for names. */ | |
3291 | ||
3292 | /* NOTE: carlton/2003-11-10: As commented in | |
3293 | add_partial_structure, the demangler sometimes | |
3294 | prints the type info in a different form from the | |
3295 | debug info. We could solve this by using the | |
3296 | demangled name to get the prefix; if doing so, | |
3297 | however, we'd need to be careful when reading a | |
3298 | class that's nested inside a template class. | |
3299 | That would also cause problems when trying to | |
3300 | determine RTTI information, since we use the | |
3301 | demangler to determine the appropriate class | |
3302 | name. */ | |
3303 | char *actual_class_name | |
3304 | = class_name_from_physname (dwarf2_linkage_name | |
e142c38c | 3305 | (child_die, cu)); |
63d06c5c DC |
3306 | if (actual_class_name != NULL |
3307 | && strcmp (actual_class_name, name) != 0) | |
3308 | { | |
3309 | TYPE_TAG_NAME (type) | |
3310 | = obsavestring (actual_class_name, | |
3311 | strlen (actual_class_name), | |
b99607ea | 3312 | &objfile->objfile_obstack); |
63d06c5c DC |
3313 | } |
3314 | xfree (actual_class_name); | |
3315 | need_to_update_name = 0; | |
3316 | } | |
c906108c SS |
3317 | } |
3318 | else if (child_die->tag == DW_TAG_inheritance) | |
3319 | { | |
3320 | /* C++ base class field. */ | |
e7c27a73 | 3321 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3322 | } |
c906108c SS |
3323 | child_die = sibling_die (child_die); |
3324 | } | |
3325 | ||
3326 | /* Attach fields and member functions to the type. */ | |
3327 | if (fi.nfields) | |
e7c27a73 | 3328 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3329 | if (fi.nfnfields) |
3330 | { | |
e7c27a73 | 3331 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3332 | |
c5aa993b | 3333 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3334 | class itself) which contains the vtable pointer for the current |
3335 | class from the DW_AT_containing_type attribute. */ | |
3336 | ||
e142c38c | 3337 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3338 | { |
e7c27a73 | 3339 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3340 | |
3341 | TYPE_VPTR_BASETYPE (type) = t; | |
3342 | if (type == t) | |
3343 | { | |
c5aa993b JM |
3344 | static const char vptr_name[] = |
3345 | {'_', 'v', 'p', 't', 'r', '\0'}; | |
c906108c SS |
3346 | int i; |
3347 | ||
3348 | /* Our own class provides vtbl ptr. */ | |
3349 | for (i = TYPE_NFIELDS (t) - 1; | |
3350 | i >= TYPE_N_BASECLASSES (t); | |
3351 | --i) | |
3352 | { | |
3353 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3354 | ||
27bfe10e JB |
3355 | if ((strncmp (fieldname, vptr_name, |
3356 | strlen (vptr_name) - 1) | |
3357 | == 0) | |
c906108c SS |
3358 | && is_cplus_marker (fieldname[strlen (vptr_name)])) |
3359 | { | |
3360 | TYPE_VPTR_FIELDNO (type) = i; | |
3361 | break; | |
3362 | } | |
3363 | } | |
3364 | ||
3365 | /* Complain if virtual function table field not found. */ | |
3366 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 KB |
3367 | complaint (&symfile_complaints, |
3368 | "virtual function table pointer not found when defining class '%s'", | |
3369 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : | |
3370 | ""); | |
c906108c SS |
3371 | } |
3372 | else | |
3373 | { | |
3374 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3375 | } | |
3376 | } | |
3377 | } | |
3378 | ||
c906108c SS |
3379 | do_cleanups (back_to); |
3380 | } | |
3381 | else | |
3382 | { | |
3383 | /* No children, must be stub. */ | |
3384 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3385 | } | |
63d06c5c DC |
3386 | |
3387 | processing_current_prefix = previous_prefix; | |
3388 | if (back_to != NULL) | |
3389 | do_cleanups (back_to); | |
c906108c SS |
3390 | } |
3391 | ||
134d01f1 DJ |
3392 | static void |
3393 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3394 | { | |
3395 | struct objfile *objfile = cu->objfile; | |
3396 | const char *previous_prefix = processing_current_prefix; | |
c906108c | 3397 | |
134d01f1 DJ |
3398 | if (TYPE_TAG_NAME (die->type) != NULL) |
3399 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3400 | |
134d01f1 DJ |
3401 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
3402 | { | |
3403 | struct die_info *child_die; | |
3404 | ||
3405 | child_die = die->child; | |
3406 | ||
3407 | while (child_die && child_die->tag) | |
3408 | { | |
3409 | if (child_die->tag == DW_TAG_member | |
3410 | || child_die->tag == DW_TAG_variable | |
3411 | || child_die->tag == DW_TAG_inheritance) | |
3412 | { | |
3413 | /* Do nothing. */ | |
3414 | } | |
3415 | else | |
3416 | process_die (child_die, cu); | |
3417 | ||
3418 | child_die = sibling_die (child_die); | |
3419 | } | |
3420 | ||
3421 | new_symbol (die, die->type, cu); | |
3422 | } | |
3423 | ||
3424 | processing_current_prefix = previous_prefix; | |
3425 | } | |
3426 | ||
3427 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
3428 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
3429 | |
3430 | static void | |
134d01f1 | 3431 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3432 | { |
e7c27a73 | 3433 | struct objfile *objfile = cu->objfile; |
c906108c | 3434 | struct type *type; |
c906108c | 3435 | struct attribute *attr; |
134d01f1 DJ |
3436 | |
3437 | if (die->type) | |
3438 | return; | |
c906108c SS |
3439 | |
3440 | type = alloc_type (objfile); | |
3441 | ||
3442 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3443 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3444 | if (attr && DW_STRING (attr)) |
3445 | { | |
d8151005 | 3446 | char *name = DW_STRING (attr); |
63d06c5c DC |
3447 | |
3448 | if (processing_has_namespace_info) | |
3449 | { | |
b99607ea | 3450 | TYPE_TAG_NAME (type) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3451 | processing_current_prefix, |
3452 | processing_current_prefix[0] == '\0' | |
3453 | ? "" : "::", | |
3454 | name); | |
3455 | } | |
3456 | else | |
3457 | { | |
d8151005 DJ |
3458 | /* The name is already allocated along with this objfile, so |
3459 | we don't need to duplicate it for the type. */ | |
3460 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 3461 | } |
c906108c SS |
3462 | } |
3463 | ||
e142c38c | 3464 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3465 | if (attr) |
3466 | { | |
3467 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3468 | } | |
3469 | else | |
3470 | { | |
3471 | TYPE_LENGTH (type) = 0; | |
3472 | } | |
3473 | ||
134d01f1 DJ |
3474 | die->type = type; |
3475 | } | |
3476 | ||
3477 | /* Given a pointer to a die which begins an enumeration, process all | |
3478 | the dies that define the members of the enumeration, and create the | |
3479 | symbol for the enumeration type. | |
3480 | ||
3481 | NOTE: We reverse the order of the element list. */ | |
3482 | ||
3483 | static void | |
3484 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3485 | { | |
3486 | struct objfile *objfile = cu->objfile; | |
3487 | struct die_info *child_die; | |
3488 | struct field *fields; | |
3489 | struct attribute *attr; | |
3490 | struct symbol *sym; | |
3491 | int num_fields; | |
3492 | int unsigned_enum = 1; | |
3493 | ||
c906108c SS |
3494 | num_fields = 0; |
3495 | fields = NULL; | |
639d11d3 | 3496 | if (die->child != NULL) |
c906108c | 3497 | { |
639d11d3 | 3498 | child_die = die->child; |
c906108c SS |
3499 | while (child_die && child_die->tag) |
3500 | { | |
3501 | if (child_die->tag != DW_TAG_enumerator) | |
3502 | { | |
e7c27a73 | 3503 | process_die (child_die, cu); |
c906108c SS |
3504 | } |
3505 | else | |
3506 | { | |
e142c38c | 3507 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
3508 | if (attr) |
3509 | { | |
134d01f1 | 3510 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
3511 | if (SYMBOL_VALUE (sym) < 0) |
3512 | unsigned_enum = 0; | |
3513 | ||
3514 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3515 | { | |
3516 | fields = (struct field *) | |
3517 | xrealloc (fields, | |
3518 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3519 | * sizeof (struct field)); |
c906108c SS |
3520 | } |
3521 | ||
22abf04a | 3522 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
3523 | FIELD_TYPE (fields[num_fields]) = NULL; |
3524 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
3525 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 3526 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
3527 | |
3528 | num_fields++; | |
3529 | } | |
3530 | } | |
3531 | ||
3532 | child_die = sibling_die (child_die); | |
3533 | } | |
3534 | ||
3535 | if (num_fields) | |
3536 | { | |
134d01f1 DJ |
3537 | TYPE_NFIELDS (die->type) = num_fields; |
3538 | TYPE_FIELDS (die->type) = (struct field *) | |
3539 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
3540 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 3541 | sizeof (struct field) * num_fields); |
b8c9b27d | 3542 | xfree (fields); |
c906108c SS |
3543 | } |
3544 | if (unsigned_enum) | |
134d01f1 | 3545 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 3546 | } |
134d01f1 DJ |
3547 | |
3548 | new_symbol (die, die->type, cu); | |
c906108c SS |
3549 | } |
3550 | ||
3551 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
3552 | the DIE's type field. For now, this only handles one dimensional | |
3553 | arrays. */ | |
3554 | ||
3555 | static void | |
e7c27a73 | 3556 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3557 | { |
e7c27a73 | 3558 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3559 | struct die_info *child_die; |
3560 | struct type *type = NULL; | |
3561 | struct type *element_type, *range_type, *index_type; | |
3562 | struct type **range_types = NULL; | |
3563 | struct attribute *attr; | |
3564 | int ndim = 0; | |
3565 | struct cleanup *back_to; | |
3566 | ||
3567 | /* Return if we've already decoded this type. */ | |
3568 | if (die->type) | |
3569 | { | |
3570 | return; | |
3571 | } | |
3572 | ||
e7c27a73 | 3573 | element_type = die_type (die, cu); |
c906108c SS |
3574 | |
3575 | /* Irix 6.2 native cc creates array types without children for | |
3576 | arrays with unspecified length. */ | |
639d11d3 | 3577 | if (die->child == NULL) |
c906108c | 3578 | { |
e142c38c | 3579 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c SS |
3580 | range_type = create_range_type (NULL, index_type, 0, -1); |
3581 | die->type = create_array_type (NULL, element_type, range_type); | |
3582 | return; | |
3583 | } | |
3584 | ||
3585 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 3586 | child_die = die->child; |
c906108c SS |
3587 | while (child_die && child_die->tag) |
3588 | { | |
3589 | if (child_die->tag == DW_TAG_subrange_type) | |
3590 | { | |
a02abb62 | 3591 | read_subrange_type (child_die, cu); |
c906108c | 3592 | |
a02abb62 JB |
3593 | if (child_die->type != NULL) |
3594 | { | |
3595 | /* The range type was succesfully read. Save it for | |
3596 | the array type creation. */ | |
3597 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
3598 | { | |
3599 | range_types = (struct type **) | |
3600 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
3601 | * sizeof (struct type *)); | |
3602 | if (ndim == 0) | |
3603 | make_cleanup (free_current_contents, &range_types); | |
3604 | } | |
3605 | range_types[ndim++] = child_die->type; | |
3606 | } | |
c906108c SS |
3607 | } |
3608 | child_die = sibling_die (child_die); | |
3609 | } | |
3610 | ||
3611 | /* Dwarf2 dimensions are output from left to right, create the | |
3612 | necessary array types in backwards order. */ | |
3613 | type = element_type; | |
3614 | while (ndim-- > 0) | |
3615 | type = create_array_type (NULL, type, range_types[ndim]); | |
3616 | ||
f5f8a009 EZ |
3617 | /* Understand Dwarf2 support for vector types (like they occur on |
3618 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
3619 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
3620 | custom vendor extension. The main difference between a regular | |
3621 | array and the vector variant is that vectors are passed by value | |
3622 | to functions. */ | |
e142c38c | 3623 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
3624 | if (attr) |
3625 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
3626 | ||
c906108c SS |
3627 | do_cleanups (back_to); |
3628 | ||
3629 | /* Install the type in the die. */ | |
3630 | die->type = type; | |
3631 | } | |
3632 | ||
3633 | /* First cut: install each common block member as a global variable. */ | |
3634 | ||
3635 | static void | |
e7c27a73 | 3636 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3637 | { |
3638 | struct die_info *child_die; | |
3639 | struct attribute *attr; | |
3640 | struct symbol *sym; | |
3641 | CORE_ADDR base = (CORE_ADDR) 0; | |
3642 | ||
e142c38c | 3643 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
3644 | if (attr) |
3645 | { | |
8e19ed76 PS |
3646 | /* Support the .debug_loc offsets */ |
3647 | if (attr_form_is_block (attr)) | |
3648 | { | |
e7c27a73 | 3649 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
3650 | } |
3651 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3652 | { | |
4d3c2250 | 3653 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3654 | } |
3655 | else | |
3656 | { | |
4d3c2250 KB |
3657 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
3658 | "common block member"); | |
8e19ed76 | 3659 | } |
c906108c | 3660 | } |
639d11d3 | 3661 | if (die->child != NULL) |
c906108c | 3662 | { |
639d11d3 | 3663 | child_die = die->child; |
c906108c SS |
3664 | while (child_die && child_die->tag) |
3665 | { | |
e7c27a73 | 3666 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 3667 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
3668 | if (attr) |
3669 | { | |
3670 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 3671 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
3672 | add_symbol_to_list (sym, &global_symbols); |
3673 | } | |
3674 | child_die = sibling_die (child_die); | |
3675 | } | |
3676 | } | |
3677 | } | |
3678 | ||
d9fa45fe DC |
3679 | /* Read a C++ namespace. */ |
3680 | ||
d9fa45fe | 3681 | static void |
e7c27a73 | 3682 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 3683 | { |
e7c27a73 | 3684 | struct objfile *objfile = cu->objfile; |
38d518c9 | 3685 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 3686 | const char *name; |
9219021c DC |
3687 | int is_anonymous; |
3688 | struct die_info *current_die; | |
3689 | ||
e142c38c | 3690 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
3691 | |
3692 | /* Now build the name of the current namespace. */ | |
3693 | ||
38d518c9 | 3694 | if (previous_prefix[0] == '\0') |
9219021c | 3695 | { |
38d518c9 | 3696 | processing_current_prefix = name; |
9219021c DC |
3697 | } |
3698 | else | |
3699 | { | |
38d518c9 | 3700 | /* We need temp_name around because processing_current_prefix |
9219021c | 3701 | is a const char *. */ |
38d518c9 | 3702 | char *temp_name = alloca (strlen (previous_prefix) |
9219021c | 3703 | + 2 + strlen(name) + 1); |
38d518c9 | 3704 | strcpy (temp_name, previous_prefix); |
9219021c DC |
3705 | strcat (temp_name, "::"); |
3706 | strcat (temp_name, name); | |
3707 | ||
38d518c9 | 3708 | processing_current_prefix = temp_name; |
9219021c DC |
3709 | } |
3710 | ||
5c4e30ca DC |
3711 | /* Add a symbol associated to this if we haven't seen the namespace |
3712 | before. Also, add a using directive if it's an anonymous | |
3713 | namespace. */ | |
9219021c | 3714 | |
e142c38c | 3715 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
3716 | { |
3717 | struct type *type; | |
3718 | ||
3719 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
3720 | this cast will hopefully become unnecessary. */ | |
3721 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 3722 | (char *) processing_current_prefix, |
5c4e30ca DC |
3723 | objfile); |
3724 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
3725 | ||
e7c27a73 | 3726 | new_symbol (die, type, cu); |
5c4e30ca DC |
3727 | |
3728 | if (is_anonymous) | |
38d518c9 EZ |
3729 | cp_add_using_directive (processing_current_prefix, |
3730 | strlen (previous_prefix), | |
3731 | strlen (processing_current_prefix)); | |
5c4e30ca | 3732 | } |
9219021c | 3733 | |
639d11d3 | 3734 | if (die->child != NULL) |
d9fa45fe | 3735 | { |
639d11d3 | 3736 | struct die_info *child_die = die->child; |
d9fa45fe DC |
3737 | |
3738 | while (child_die && child_die->tag) | |
3739 | { | |
e7c27a73 | 3740 | process_die (child_die, cu); |
d9fa45fe DC |
3741 | child_die = sibling_die (child_die); |
3742 | } | |
3743 | } | |
9219021c | 3744 | |
38d518c9 EZ |
3745 | processing_current_prefix = previous_prefix; |
3746 | } | |
3747 | ||
3748 | /* Return the name of the namespace represented by DIE. Set | |
3749 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
3750 | namespace. */ | |
3751 | ||
3752 | static const char * | |
e142c38c | 3753 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
3754 | { |
3755 | struct die_info *current_die; | |
3756 | const char *name = NULL; | |
3757 | ||
3758 | /* Loop through the extensions until we find a name. */ | |
3759 | ||
3760 | for (current_die = die; | |
3761 | current_die != NULL; | |
e142c38c | 3762 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 3763 | { |
e142c38c | 3764 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
3765 | if (name != NULL) |
3766 | break; | |
3767 | } | |
3768 | ||
3769 | /* Is it an anonymous namespace? */ | |
3770 | ||
3771 | *is_anonymous = (name == NULL); | |
3772 | if (*is_anonymous) | |
3773 | name = "(anonymous namespace)"; | |
3774 | ||
3775 | return name; | |
d9fa45fe DC |
3776 | } |
3777 | ||
c906108c SS |
3778 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
3779 | the user defined type vector. */ | |
3780 | ||
3781 | static void | |
e7c27a73 | 3782 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3783 | { |
e7c27a73 | 3784 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 3785 | struct type *type; |
8b2dbe47 KB |
3786 | struct attribute *attr_byte_size; |
3787 | struct attribute *attr_address_class; | |
3788 | int byte_size, addr_class; | |
c906108c SS |
3789 | |
3790 | if (die->type) | |
3791 | { | |
3792 | return; | |
3793 | } | |
3794 | ||
e7c27a73 | 3795 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 3796 | |
e142c38c | 3797 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
3798 | if (attr_byte_size) |
3799 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 3800 | else |
8b2dbe47 KB |
3801 | byte_size = cu_header->addr_size; |
3802 | ||
e142c38c | 3803 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
3804 | if (attr_address_class) |
3805 | addr_class = DW_UNSND (attr_address_class); | |
3806 | else | |
3807 | addr_class = DW_ADDR_none; | |
3808 | ||
3809 | /* If the pointer size or address class is different than the | |
3810 | default, create a type variant marked as such and set the | |
3811 | length accordingly. */ | |
3812 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 3813 | { |
8b2dbe47 KB |
3814 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
3815 | { | |
3816 | int type_flags; | |
3817 | ||
3818 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
3819 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
3820 | type = make_type_with_address_space (type, type_flags); | |
3821 | } | |
3822 | else if (TYPE_LENGTH (type) != byte_size) | |
3823 | { | |
4d3c2250 | 3824 | complaint (&symfile_complaints, "invalid pointer size %d", byte_size); |
8b2dbe47 KB |
3825 | } |
3826 | else { | |
3827 | /* Should we also complain about unhandled address classes? */ | |
3828 | } | |
c906108c | 3829 | } |
8b2dbe47 KB |
3830 | |
3831 | TYPE_LENGTH (type) = byte_size; | |
c906108c SS |
3832 | die->type = type; |
3833 | } | |
3834 | ||
3835 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
3836 | the user defined type vector. */ | |
3837 | ||
3838 | static void | |
e7c27a73 | 3839 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3840 | { |
e7c27a73 | 3841 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3842 | struct type *type; |
3843 | struct type *to_type; | |
3844 | struct type *domain; | |
3845 | ||
3846 | if (die->type) | |
3847 | { | |
3848 | return; | |
3849 | } | |
3850 | ||
3851 | type = alloc_type (objfile); | |
e7c27a73 DJ |
3852 | to_type = die_type (die, cu); |
3853 | domain = die_containing_type (die, cu); | |
c906108c SS |
3854 | smash_to_member_type (type, domain, to_type); |
3855 | ||
3856 | die->type = type; | |
3857 | } | |
3858 | ||
3859 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
3860 | the user defined type vector. */ | |
3861 | ||
3862 | static void | |
e7c27a73 | 3863 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3864 | { |
e7c27a73 | 3865 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
3866 | struct type *type; |
3867 | struct attribute *attr; | |
3868 | ||
3869 | if (die->type) | |
3870 | { | |
3871 | return; | |
3872 | } | |
3873 | ||
e7c27a73 | 3874 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 3875 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3876 | if (attr) |
3877 | { | |
3878 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3879 | } | |
3880 | else | |
3881 | { | |
107d2387 | 3882 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c SS |
3883 | } |
3884 | die->type = type; | |
3885 | } | |
3886 | ||
3887 | static void | |
e7c27a73 | 3888 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3889 | { |
090c42a4 JB |
3890 | struct type *base_type; |
3891 | ||
c906108c SS |
3892 | if (die->type) |
3893 | { | |
3894 | return; | |
3895 | } | |
3896 | ||
e7c27a73 | 3897 | base_type = die_type (die, cu); |
090c42a4 | 3898 | die->type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
c906108c SS |
3899 | } |
3900 | ||
3901 | static void | |
e7c27a73 | 3902 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3903 | { |
090c42a4 JB |
3904 | struct type *base_type; |
3905 | ||
c906108c SS |
3906 | if (die->type) |
3907 | { | |
3908 | return; | |
3909 | } | |
3910 | ||
e7c27a73 | 3911 | base_type = die_type (die, cu); |
090c42a4 | 3912 | die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
c906108c SS |
3913 | } |
3914 | ||
3915 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
3916 | the user defined type vector. It isn't really a user defined type, | |
3917 | but it behaves like one, with other DIE's using an AT_user_def_type | |
3918 | attribute to reference it. */ | |
3919 | ||
3920 | static void | |
e7c27a73 | 3921 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3922 | { |
e7c27a73 | 3923 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3924 | struct type *type, *range_type, *index_type, *char_type; |
3925 | struct attribute *attr; | |
3926 | unsigned int length; | |
3927 | ||
3928 | if (die->type) | |
3929 | { | |
3930 | return; | |
3931 | } | |
3932 | ||
e142c38c | 3933 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
3934 | if (attr) |
3935 | { | |
3936 | length = DW_UNSND (attr); | |
3937 | } | |
3938 | else | |
3939 | { | |
b21b22e0 | 3940 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 3941 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
3942 | if (attr) |
3943 | { | |
3944 | length = DW_UNSND (attr); | |
3945 | } | |
3946 | else | |
3947 | { | |
3948 | length = 1; | |
3949 | } | |
c906108c | 3950 | } |
e142c38c | 3951 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 3952 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 3953 | if (cu->language == language_fortran) |
b21b22e0 PS |
3954 | { |
3955 | /* Need to create a unique string type for bounds | |
3956 | information */ | |
3957 | type = create_string_type (0, range_type); | |
3958 | } | |
3959 | else | |
3960 | { | |
e142c38c | 3961 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
3962 | type = create_string_type (char_type, range_type); |
3963 | } | |
c906108c SS |
3964 | die->type = type; |
3965 | } | |
3966 | ||
3967 | /* Handle DIES due to C code like: | |
3968 | ||
3969 | struct foo | |
c5aa993b JM |
3970 | { |
3971 | int (*funcp)(int a, long l); | |
3972 | int b; | |
3973 | }; | |
c906108c SS |
3974 | |
3975 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 3976 | */ |
c906108c SS |
3977 | |
3978 | static void | |
e7c27a73 | 3979 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3980 | { |
3981 | struct type *type; /* Type that this function returns */ | |
3982 | struct type *ftype; /* Function that returns above type */ | |
3983 | struct attribute *attr; | |
3984 | ||
3985 | /* Decode the type that this subroutine returns */ | |
3986 | if (die->type) | |
3987 | { | |
3988 | return; | |
3989 | } | |
e7c27a73 | 3990 | type = die_type (die, cu); |
c906108c SS |
3991 | ftype = lookup_function_type (type); |
3992 | ||
3993 | /* All functions in C++ have prototypes. */ | |
e142c38c | 3994 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 3995 | if ((attr && (DW_UNSND (attr) != 0)) |
e142c38c | 3996 | || cu->language == language_cplus) |
c906108c SS |
3997 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
3998 | ||
639d11d3 | 3999 | if (die->child != NULL) |
c906108c SS |
4000 | { |
4001 | struct die_info *child_die; | |
4002 | int nparams = 0; | |
4003 | int iparams = 0; | |
4004 | ||
4005 | /* Count the number of parameters. | |
4006 | FIXME: GDB currently ignores vararg functions, but knows about | |
4007 | vararg member functions. */ | |
639d11d3 | 4008 | child_die = die->child; |
c906108c SS |
4009 | while (child_die && child_die->tag) |
4010 | { | |
4011 | if (child_die->tag == DW_TAG_formal_parameter) | |
4012 | nparams++; | |
4013 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4014 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4015 | child_die = sibling_die (child_die); | |
4016 | } | |
4017 | ||
4018 | /* Allocate storage for parameters and fill them in. */ | |
4019 | TYPE_NFIELDS (ftype) = nparams; | |
4020 | TYPE_FIELDS (ftype) = (struct field *) | |
4021 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
4022 | ||
639d11d3 | 4023 | child_die = die->child; |
c906108c SS |
4024 | while (child_die && child_die->tag) |
4025 | { | |
4026 | if (child_die->tag == DW_TAG_formal_parameter) | |
4027 | { | |
4028 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4029 | member functions. G++ helps GDB by marking the first |
4030 | parameter for non-static member functions (which is the | |
4031 | this pointer) as artificial. We pass this information | |
4032 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4033 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4034 | if (attr) |
4035 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4036 | else | |
4037 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4038 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4039 | iparams++; |
4040 | } | |
4041 | child_die = sibling_die (child_die); | |
4042 | } | |
4043 | } | |
4044 | ||
4045 | die->type = ftype; | |
4046 | } | |
4047 | ||
4048 | static void | |
e7c27a73 | 4049 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4050 | { |
e7c27a73 | 4051 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4052 | struct attribute *attr; |
4053 | char *name = NULL; | |
c906108c SS |
4054 | |
4055 | if (!die->type) | |
4056 | { | |
e142c38c | 4057 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 4058 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
4059 | { |
4060 | name = DW_STRING (attr); | |
4061 | } | |
4062 | die->type = init_type (TYPE_CODE_TYPEDEF, 0, TYPE_FLAG_TARGET_STUB, name, objfile); | |
e7c27a73 | 4063 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4064 | } |
4065 | } | |
4066 | ||
4067 | /* Find a representation of a given base type and install | |
4068 | it in the TYPE field of the die. */ | |
4069 | ||
4070 | static void | |
e7c27a73 | 4071 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4072 | { |
e7c27a73 | 4073 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4074 | struct type *type; |
4075 | struct attribute *attr; | |
4076 | int encoding = 0, size = 0; | |
4077 | ||
4078 | /* If we've already decoded this die, this is a no-op. */ | |
4079 | if (die->type) | |
4080 | { | |
4081 | return; | |
4082 | } | |
4083 | ||
e142c38c | 4084 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4085 | if (attr) |
4086 | { | |
4087 | encoding = DW_UNSND (attr); | |
4088 | } | |
e142c38c | 4089 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4090 | if (attr) |
4091 | { | |
4092 | size = DW_UNSND (attr); | |
4093 | } | |
e142c38c | 4094 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4095 | if (attr && DW_STRING (attr)) |
4096 | { | |
4097 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4098 | int type_flags = 0; |
c906108c SS |
4099 | |
4100 | switch (encoding) | |
4101 | { | |
4102 | case DW_ATE_address: | |
4103 | /* Turn DW_ATE_address into a void * pointer. */ | |
4104 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4105 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4106 | break; |
4107 | case DW_ATE_boolean: | |
4108 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4109 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4110 | break; |
4111 | case DW_ATE_complex_float: | |
4112 | code = TYPE_CODE_COMPLEX; | |
4113 | break; | |
4114 | case DW_ATE_float: | |
4115 | code = TYPE_CODE_FLT; | |
4116 | break; | |
4117 | case DW_ATE_signed: | |
4118 | case DW_ATE_signed_char: | |
4119 | break; | |
4120 | case DW_ATE_unsigned: | |
4121 | case DW_ATE_unsigned_char: | |
f5ef7c67 | 4122 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4123 | break; |
4124 | default: | |
4d3c2250 KB |
4125 | complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'", |
4126 | dwarf_type_encoding_name (encoding)); | |
c906108c SS |
4127 | break; |
4128 | } | |
f5ef7c67 | 4129 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4130 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4131 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4132 | cu); | |
f65ca430 DJ |
4133 | else if (encoding == DW_ATE_complex_float) |
4134 | { | |
4135 | if (size == 32) | |
4136 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4137 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4138 | else if (size == 16) |
4139 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4140 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4141 | else if (size == 8) |
4142 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4143 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4144 | } |
c906108c SS |
4145 | } |
4146 | else | |
4147 | { | |
e7c27a73 | 4148 | type = dwarf_base_type (encoding, size, cu); |
c906108c SS |
4149 | } |
4150 | die->type = type; | |
4151 | } | |
4152 | ||
a02abb62 JB |
4153 | /* Read the given DW_AT_subrange DIE. */ |
4154 | ||
4155 | static void | |
4156 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4157 | { | |
4158 | struct type *base_type; | |
4159 | struct type *range_type; | |
4160 | struct attribute *attr; | |
4161 | int low = 0; | |
4162 | int high = -1; | |
4163 | ||
4164 | /* If we have already decoded this die, then nothing more to do. */ | |
4165 | if (die->type) | |
4166 | return; | |
4167 | ||
4168 | base_type = die_type (die, cu); | |
4169 | if (base_type == NULL) | |
4170 | { | |
4171 | complaint (&symfile_complaints, | |
4172 | "DW_AT_type missing from DW_TAG_subrange_type"); | |
4173 | return; | |
4174 | } | |
4175 | ||
4176 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4177 | base_type = alloc_type (NULL); | |
4178 | ||
e142c38c | 4179 | if (cu->language == language_fortran) |
a02abb62 JB |
4180 | { |
4181 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4182 | low = 1; | |
4183 | } | |
4184 | ||
e142c38c | 4185 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4186 | if (attr) |
4187 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4188 | ||
e142c38c | 4189 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4190 | if (attr) |
4191 | { | |
4192 | if (attr->form == DW_FORM_block1) | |
4193 | { | |
4194 | /* GCC encodes arrays with unspecified or dynamic length | |
4195 | with a DW_FORM_block1 attribute. | |
4196 | FIXME: GDB does not yet know how to handle dynamic | |
4197 | arrays properly, treat them as arrays with unspecified | |
4198 | length for now. | |
4199 | ||
4200 | FIXME: jimb/2003-09-22: GDB does not really know | |
4201 | how to handle arrays of unspecified length | |
4202 | either; we just represent them as zero-length | |
4203 | arrays. Choose an appropriate upper bound given | |
4204 | the lower bound we've computed above. */ | |
4205 | high = low - 1; | |
4206 | } | |
4207 | else | |
4208 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4209 | } | |
4210 | ||
4211 | range_type = create_range_type (NULL, base_type, low, high); | |
4212 | ||
e142c38c | 4213 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4214 | if (attr && DW_STRING (attr)) |
4215 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4216 | ||
e142c38c | 4217 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4218 | if (attr) |
4219 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4220 | ||
4221 | die->type = range_type; | |
4222 | } | |
4223 | ||
4224 | ||
c906108c SS |
4225 | /* Read a whole compilation unit into a linked list of dies. */ |
4226 | ||
f9aca02d | 4227 | static struct die_info * |
e7c27a73 | 4228 | read_comp_unit (char *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4229 | { |
b3810801 | 4230 | /* Reset die reference table; we are |
7f0e3f52 AC |
4231 | building new ones now. */ |
4232 | dwarf2_empty_hash_tables (); | |
c906108c | 4233 | |
e7c27a73 | 4234 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4235 | } |
4236 | ||
4237 | /* Read a single die and all its descendents. Set the die's sibling | |
4238 | field to NULL; set other fields in the die correctly, and set all | |
4239 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4240 | location of the info_ptr after reading all of those dies. PARENT | |
4241 | is the parent of the die in question. */ | |
4242 | ||
4243 | static struct die_info * | |
4244 | read_die_and_children (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4245 | struct dwarf2_cu *cu, |
639d11d3 DC |
4246 | char **new_info_ptr, |
4247 | struct die_info *parent) | |
4248 | { | |
4249 | struct die_info *die; | |
4250 | char *cur_ptr; | |
4251 | int has_children; | |
4252 | ||
e7c27a73 | 4253 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
639d11d3 DC |
4254 | store_in_ref_table (die->offset, die); |
4255 | ||
4256 | if (has_children) | |
4257 | { | |
e7c27a73 | 4258 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4259 | new_info_ptr, die); |
4260 | } | |
4261 | else | |
4262 | { | |
4263 | die->child = NULL; | |
4264 | *new_info_ptr = cur_ptr; | |
4265 | } | |
4266 | ||
4267 | die->sibling = NULL; | |
4268 | die->parent = parent; | |
4269 | return die; | |
4270 | } | |
4271 | ||
4272 | /* Read a die, all of its descendents, and all of its siblings; set | |
4273 | all of the fields of all of the dies correctly. Arguments are as | |
4274 | in read_die_and_children. */ | |
4275 | ||
4276 | static struct die_info * | |
4277 | read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4278 | struct dwarf2_cu *cu, |
639d11d3 DC |
4279 | char **new_info_ptr, |
4280 | struct die_info *parent) | |
4281 | { | |
4282 | struct die_info *first_die, *last_sibling; | |
4283 | char *cur_ptr; | |
4284 | ||
c906108c | 4285 | cur_ptr = info_ptr; |
639d11d3 DC |
4286 | first_die = last_sibling = NULL; |
4287 | ||
4288 | while (1) | |
c906108c | 4289 | { |
639d11d3 | 4290 | struct die_info *die |
e7c27a73 | 4291 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4292 | |
4293 | if (!first_die) | |
c906108c | 4294 | { |
639d11d3 | 4295 | first_die = die; |
c906108c | 4296 | } |
639d11d3 | 4297 | else |
c906108c | 4298 | { |
639d11d3 | 4299 | last_sibling->sibling = die; |
c906108c SS |
4300 | } |
4301 | ||
639d11d3 | 4302 | if (die->tag == 0) |
c906108c | 4303 | { |
639d11d3 DC |
4304 | *new_info_ptr = cur_ptr; |
4305 | return first_die; | |
c906108c SS |
4306 | } |
4307 | else | |
4308 | { | |
639d11d3 | 4309 | last_sibling = die; |
c906108c SS |
4310 | } |
4311 | } | |
c906108c SS |
4312 | } |
4313 | ||
4314 | /* Free a linked list of dies. */ | |
4315 | ||
4316 | static void | |
fba45db2 | 4317 | free_die_list (struct die_info *dies) |
c906108c SS |
4318 | { |
4319 | struct die_info *die, *next; | |
4320 | ||
4321 | die = dies; | |
4322 | while (die) | |
4323 | { | |
639d11d3 DC |
4324 | if (die->child != NULL) |
4325 | free_die_list (die->child); | |
4326 | next = die->sibling; | |
b8c9b27d KB |
4327 | xfree (die->attrs); |
4328 | xfree (die); | |
c906108c SS |
4329 | die = next; |
4330 | } | |
4331 | } | |
4332 | ||
74b7792f AC |
4333 | static void |
4334 | do_free_die_list_cleanup (void *dies) | |
4335 | { | |
4336 | free_die_list (dies); | |
4337 | } | |
4338 | ||
4339 | static struct cleanup * | |
4340 | make_cleanup_free_die_list (struct die_info *dies) | |
4341 | { | |
4342 | return make_cleanup (do_free_die_list_cleanup, dies); | |
4343 | } | |
4344 | ||
4345 | ||
c906108c | 4346 | /* Read the contents of the section at OFFSET and of size SIZE from the |
8b92e4d5 | 4347 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4348 | |
b6af0555 | 4349 | char * |
188dd5d6 | 4350 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4351 | { |
4352 | bfd *abfd = objfile->obfd; | |
086df311 | 4353 | char *buf, *retbuf; |
188dd5d6 | 4354 | bfd_size_type size = bfd_get_section_size_before_reloc (sectp); |
c906108c SS |
4355 | |
4356 | if (size == 0) | |
4357 | return NULL; | |
4358 | ||
8b92e4d5 | 4359 | buf = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
086df311 DJ |
4360 | retbuf |
4361 | = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf); | |
4362 | if (retbuf != NULL) | |
4363 | return retbuf; | |
4364 | ||
188dd5d6 DJ |
4365 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
4366 | || bfd_bread (buf, size, abfd) != size) | |
4367 | error ("Dwarf Error: Can't read DWARF data from '%s'", | |
4368 | bfd_get_filename (abfd)); | |
4369 | ||
c906108c SS |
4370 | return buf; |
4371 | } | |
4372 | ||
4373 | /* In DWARF version 2, the description of the debugging information is | |
4374 | stored in a separate .debug_abbrev section. Before we read any | |
4375 | dies from a section we read in all abbreviations and install them | |
4376 | in a hash table. */ | |
4377 | ||
4378 | static void | |
e7c27a73 | 4379 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4380 | { |
e7c27a73 | 4381 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4382 | char *abbrev_ptr; |
4383 | struct abbrev_info *cur_abbrev; | |
4384 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
4385 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
4386 | struct attr_abbrev *cur_attrs; |
4387 | unsigned int allocated_attrs; | |
c906108c | 4388 | |
57349743 | 4389 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
4390 | obstack_init (&cu->abbrev_obstack); |
4391 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
4392 | (ABBREV_HASH_SIZE | |
4393 | * sizeof (struct abbrev_info *))); | |
4394 | memset (cu->dwarf2_abbrevs, 0, | |
4395 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 4396 | |
57349743 | 4397 | abbrev_ptr = dwarf_abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
4398 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4399 | abbrev_ptr += bytes_read; | |
4400 | ||
f3dd6933 DJ |
4401 | allocated_attrs = ATTR_ALLOC_CHUNK; |
4402 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
4403 | ||
c906108c SS |
4404 | /* loop until we reach an abbrev number of 0 */ |
4405 | while (abbrev_number) | |
4406 | { | |
f3dd6933 | 4407 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
4408 | |
4409 | /* read in abbrev header */ | |
4410 | cur_abbrev->number = abbrev_number; | |
4411 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4412 | abbrev_ptr += bytes_read; | |
4413 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
4414 | abbrev_ptr += 1; | |
4415 | ||
4416 | /* now read in declarations */ | |
4417 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4418 | abbrev_ptr += bytes_read; | |
4419 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4420 | abbrev_ptr += bytes_read; | |
4421 | while (abbrev_name) | |
4422 | { | |
f3dd6933 | 4423 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 4424 | { |
f3dd6933 DJ |
4425 | allocated_attrs += ATTR_ALLOC_CHUNK; |
4426 | cur_attrs | |
4427 | = xrealloc (cur_attrs, (allocated_attrs | |
4428 | * sizeof (struct attr_abbrev))); | |
c906108c | 4429 | } |
f3dd6933 DJ |
4430 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
4431 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
4432 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4433 | abbrev_ptr += bytes_read; | |
4434 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4435 | abbrev_ptr += bytes_read; | |
4436 | } | |
4437 | ||
f3dd6933 DJ |
4438 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
4439 | (cur_abbrev->num_attrs | |
4440 | * sizeof (struct attr_abbrev))); | |
4441 | memcpy (cur_abbrev->attrs, cur_attrs, | |
4442 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
4443 | ||
c906108c | 4444 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
4445 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
4446 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
4447 | |
4448 | /* Get next abbreviation. | |
4449 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
4450 | always properly terminated with an abbrev number of 0. |
4451 | Exit loop if we encounter an abbreviation which we have | |
4452 | already read (which means we are about to read the abbreviations | |
4453 | for the next compile unit) or if the end of the abbreviation | |
4454 | table is reached. */ | |
c906108c | 4455 | if ((unsigned int) (abbrev_ptr - dwarf_abbrev_buffer) |
c5aa993b | 4456 | >= dwarf_abbrev_size) |
c906108c SS |
4457 | break; |
4458 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4459 | abbrev_ptr += bytes_read; | |
e7c27a73 | 4460 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
4461 | break; |
4462 | } | |
f3dd6933 DJ |
4463 | |
4464 | xfree (cur_attrs); | |
c906108c SS |
4465 | } |
4466 | ||
f3dd6933 | 4467 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 4468 | |
c906108c | 4469 | static void |
f3dd6933 | 4470 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 4471 | { |
f3dd6933 | 4472 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 4473 | |
f3dd6933 DJ |
4474 | obstack_free (&cu->abbrev_obstack, NULL); |
4475 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
4476 | } |
4477 | ||
4478 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
4479 | ||
4480 | static struct abbrev_info * | |
e7c27a73 | 4481 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
4482 | { |
4483 | unsigned int hash_number; | |
4484 | struct abbrev_info *abbrev; | |
4485 | ||
4486 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 4487 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
4488 | |
4489 | while (abbrev) | |
4490 | { | |
4491 | if (abbrev->number == number) | |
4492 | return abbrev; | |
4493 | else | |
4494 | abbrev = abbrev->next; | |
4495 | } | |
4496 | return NULL; | |
4497 | } | |
4498 | ||
4499 | /* Read a minimal amount of information into the minimal die structure. */ | |
4500 | ||
4501 | static char * | |
107d2387 | 4502 | read_partial_die (struct partial_die_info *part_die, bfd *abfd, |
e7c27a73 | 4503 | char *info_ptr, struct dwarf2_cu *cu) |
c906108c SS |
4504 | { |
4505 | unsigned int abbrev_number, bytes_read, i; | |
4506 | struct abbrev_info *abbrev; | |
4507 | struct attribute attr; | |
4508 | struct attribute spec_attr; | |
4509 | int found_spec_attr = 0; | |
c5aa993b | 4510 | int has_low_pc_attr = 0; |
c906108c SS |
4511 | int has_high_pc_attr = 0; |
4512 | ||
4513 | *part_die = zeroed_partial_die; | |
c906108c SS |
4514 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4515 | info_ptr += bytes_read; | |
4516 | if (!abbrev_number) | |
4517 | return info_ptr; | |
4518 | ||
e7c27a73 | 4519 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4520 | if (!abbrev) |
4521 | { | |
659b0389 ML |
4522 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, |
4523 | bfd_get_filename (abfd)); | |
c906108c SS |
4524 | } |
4525 | part_die->offset = info_ptr - dwarf_info_buffer; | |
4526 | part_die->tag = abbrev->tag; | |
4527 | part_die->has_children = abbrev->has_children; | |
4528 | part_die->abbrev = abbrev_number; | |
4529 | ||
4530 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4531 | { | |
e7c27a73 | 4532 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
4533 | |
4534 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 4535 | partial symbol table. */ |
c906108c SS |
4536 | switch (attr.name) |
4537 | { | |
4538 | case DW_AT_name: | |
4539 | ||
4540 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
4541 | if (part_die->name == NULL) | |
4542 | part_die->name = DW_STRING (&attr); | |
4543 | break; | |
4544 | case DW_AT_MIPS_linkage_name: | |
4545 | part_die->name = DW_STRING (&attr); | |
4546 | break; | |
4547 | case DW_AT_low_pc: | |
4548 | has_low_pc_attr = 1; | |
4549 | part_die->lowpc = DW_ADDR (&attr); | |
4550 | break; | |
4551 | case DW_AT_high_pc: | |
4552 | has_high_pc_attr = 1; | |
4553 | part_die->highpc = DW_ADDR (&attr); | |
4554 | break; | |
4555 | case DW_AT_location: | |
8e19ed76 PS |
4556 | /* Support the .debug_loc offsets */ |
4557 | if (attr_form_is_block (&attr)) | |
4558 | { | |
4559 | part_die->locdesc = DW_BLOCK (&attr); | |
4560 | } | |
4561 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
4562 | { | |
4d3c2250 | 4563 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4564 | } |
4565 | else | |
4566 | { | |
4d3c2250 KB |
4567 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4568 | "partial symbol information"); | |
8e19ed76 | 4569 | } |
c906108c SS |
4570 | break; |
4571 | case DW_AT_language: | |
4572 | part_die->language = DW_UNSND (&attr); | |
4573 | break; | |
4574 | case DW_AT_external: | |
4575 | part_die->is_external = DW_UNSND (&attr); | |
4576 | break; | |
4577 | case DW_AT_declaration: | |
4578 | part_die->is_declaration = DW_UNSND (&attr); | |
4579 | break; | |
4580 | case DW_AT_type: | |
4581 | part_die->has_type = 1; | |
4582 | break; | |
4583 | case DW_AT_abstract_origin: | |
4584 | case DW_AT_specification: | |
4585 | found_spec_attr = 1; | |
4586 | spec_attr = attr; | |
4587 | break; | |
4588 | case DW_AT_sibling: | |
4589 | /* Ignore absolute siblings, they might point outside of | |
4590 | the current compile unit. */ | |
4591 | if (attr.form == DW_FORM_ref_addr) | |
4d3c2250 | 4592 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); |
c906108c SS |
4593 | else |
4594 | part_die->sibling = | |
e142c38c | 4595 | dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr, cu); |
c906108c SS |
4596 | break; |
4597 | default: | |
4598 | break; | |
4599 | } | |
4600 | } | |
4601 | ||
4602 | /* If we found a reference attribute and the die has no name, try | |
4603 | to find a name in the referred to die. */ | |
4604 | ||
4605 | if (found_spec_attr && part_die->name == NULL) | |
4606 | { | |
4607 | struct partial_die_info spec_die; | |
4608 | char *spec_ptr; | |
c906108c | 4609 | |
e142c38c DJ |
4610 | spec_ptr = dwarf_info_buffer |
4611 | + dwarf2_get_ref_die_offset (&spec_attr, cu); | |
e7c27a73 | 4612 | read_partial_die (&spec_die, abfd, spec_ptr, cu); |
c906108c SS |
4613 | if (spec_die.name) |
4614 | { | |
4615 | part_die->name = spec_die.name; | |
4616 | ||
4617 | /* Copy DW_AT_external attribute if it is set. */ | |
4618 | if (spec_die.is_external) | |
4619 | part_die->is_external = spec_die.is_external; | |
4620 | } | |
4621 | } | |
4622 | ||
4623 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
4624 | eliminate duplicate copies of functions and vtables and such. | |
4625 | The linker will arbitrarily choose one and discard the others. | |
4626 | The AT_*_pc values for such functions refer to local labels in | |
4627 | these sections. If the section from that file was discarded, the | |
4628 | labels are not in the output, so the relocs get a value of 0. | |
4629 | If this is a discarded function, mark the pc bounds as invalid, | |
4630 | so that GDB will ignore it. */ | |
4631 | if (has_low_pc_attr && has_high_pc_attr | |
4632 | && part_die->lowpc < part_die->highpc | |
4633 | && (part_die->lowpc != 0 | |
4634 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 4635 | part_die->has_pc_info = 1; |
c906108c SS |
4636 | return info_ptr; |
4637 | } | |
4638 | ||
639d11d3 DC |
4639 | /* Read the die from the .debug_info section buffer. Set DIEP to |
4640 | point to a newly allocated die with its information, except for its | |
4641 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
4642 | whether the die has children or not. */ | |
c906108c SS |
4643 | |
4644 | static char * | |
107d2387 | 4645 | read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr, |
e7c27a73 | 4646 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
4647 | { |
4648 | unsigned int abbrev_number, bytes_read, i, offset; | |
4649 | struct abbrev_info *abbrev; | |
4650 | struct die_info *die; | |
4651 | ||
4652 | offset = info_ptr - dwarf_info_buffer; | |
4653 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4654 | info_ptr += bytes_read; | |
4655 | if (!abbrev_number) | |
4656 | { | |
4657 | die = dwarf_alloc_die (); | |
4658 | die->tag = 0; | |
4659 | die->abbrev = abbrev_number; | |
4660 | die->type = NULL; | |
4661 | *diep = die; | |
639d11d3 | 4662 | *has_children = 0; |
c906108c SS |
4663 | return info_ptr; |
4664 | } | |
4665 | ||
e7c27a73 | 4666 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4667 | if (!abbrev) |
4668 | { | |
639d11d3 DC |
4669 | error ("Dwarf Error: could not find abbrev number %d [in module %s]", |
4670 | abbrev_number, | |
4671 | bfd_get_filename (abfd)); | |
c906108c SS |
4672 | } |
4673 | die = dwarf_alloc_die (); | |
4674 | die->offset = offset; | |
4675 | die->tag = abbrev->tag; | |
c906108c SS |
4676 | die->abbrev = abbrev_number; |
4677 | die->type = NULL; | |
4678 | ||
4679 | die->num_attrs = abbrev->num_attrs; | |
4680 | die->attrs = (struct attribute *) | |
4681 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
4682 | ||
4683 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4684 | { | |
4685 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 4686 | abfd, info_ptr, cu); |
c906108c SS |
4687 | } |
4688 | ||
4689 | *diep = die; | |
639d11d3 | 4690 | *has_children = abbrev->has_children; |
c906108c SS |
4691 | return info_ptr; |
4692 | } | |
4693 | ||
a8329558 | 4694 | /* Read an attribute value described by an attribute form. */ |
c906108c SS |
4695 | |
4696 | static char * | |
a8329558 | 4697 | read_attribute_value (struct attribute *attr, unsigned form, |
e7c27a73 DJ |
4698 | bfd *abfd, char *info_ptr, |
4699 | struct dwarf2_cu *cu) | |
c906108c | 4700 | { |
e7c27a73 | 4701 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4702 | unsigned int bytes_read; |
4703 | struct dwarf_block *blk; | |
4704 | ||
a8329558 KW |
4705 | attr->form = form; |
4706 | switch (form) | |
c906108c SS |
4707 | { |
4708 | case DW_FORM_addr: | |
4709 | case DW_FORM_ref_addr: | |
e7c27a73 | 4710 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 4711 | info_ptr += bytes_read; |
c906108c SS |
4712 | break; |
4713 | case DW_FORM_block2: | |
4714 | blk = dwarf_alloc_block (); | |
4715 | blk->size = read_2_bytes (abfd, info_ptr); | |
4716 | info_ptr += 2; | |
4717 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4718 | info_ptr += blk->size; | |
4719 | DW_BLOCK (attr) = blk; | |
4720 | break; | |
4721 | case DW_FORM_block4: | |
4722 | blk = dwarf_alloc_block (); | |
4723 | blk->size = read_4_bytes (abfd, info_ptr); | |
4724 | info_ptr += 4; | |
4725 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4726 | info_ptr += blk->size; | |
4727 | DW_BLOCK (attr) = blk; | |
4728 | break; | |
4729 | case DW_FORM_data2: | |
4730 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4731 | info_ptr += 2; | |
4732 | break; | |
4733 | case DW_FORM_data4: | |
4734 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4735 | info_ptr += 4; | |
4736 | break; | |
4737 | case DW_FORM_data8: | |
4738 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4739 | info_ptr += 8; | |
4740 | break; | |
4741 | case DW_FORM_string: | |
4742 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
4743 | info_ptr += bytes_read; | |
4744 | break; | |
4bdf3d34 JJ |
4745 | case DW_FORM_strp: |
4746 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
4747 | &bytes_read); | |
4748 | info_ptr += bytes_read; | |
4749 | break; | |
c906108c SS |
4750 | case DW_FORM_block: |
4751 | blk = dwarf_alloc_block (); | |
4752 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4753 | info_ptr += bytes_read; | |
4754 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4755 | info_ptr += blk->size; | |
4756 | DW_BLOCK (attr) = blk; | |
4757 | break; | |
4758 | case DW_FORM_block1: | |
4759 | blk = dwarf_alloc_block (); | |
4760 | blk->size = read_1_byte (abfd, info_ptr); | |
4761 | info_ptr += 1; | |
4762 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4763 | info_ptr += blk->size; | |
4764 | DW_BLOCK (attr) = blk; | |
4765 | break; | |
4766 | case DW_FORM_data1: | |
4767 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4768 | info_ptr += 1; | |
4769 | break; | |
4770 | case DW_FORM_flag: | |
4771 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4772 | info_ptr += 1; | |
4773 | break; | |
4774 | case DW_FORM_sdata: | |
4775 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
4776 | info_ptr += bytes_read; | |
4777 | break; | |
4778 | case DW_FORM_udata: | |
4779 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4780 | info_ptr += bytes_read; | |
4781 | break; | |
4782 | case DW_FORM_ref1: | |
4783 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4784 | info_ptr += 1; | |
4785 | break; | |
4786 | case DW_FORM_ref2: | |
4787 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4788 | info_ptr += 2; | |
4789 | break; | |
4790 | case DW_FORM_ref4: | |
4791 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4792 | info_ptr += 4; | |
4793 | break; | |
613e1657 KB |
4794 | case DW_FORM_ref8: |
4795 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4796 | info_ptr += 8; | |
4797 | break; | |
c906108c SS |
4798 | case DW_FORM_ref_udata: |
4799 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4800 | info_ptr += bytes_read; | |
4801 | break; | |
c906108c | 4802 | case DW_FORM_indirect: |
a8329558 KW |
4803 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4804 | info_ptr += bytes_read; | |
e7c27a73 | 4805 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 4806 | break; |
c906108c | 4807 | default: |
659b0389 ML |
4808 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", |
4809 | dwarf_form_name (form), | |
4810 | bfd_get_filename (abfd)); | |
c906108c SS |
4811 | } |
4812 | return info_ptr; | |
4813 | } | |
4814 | ||
a8329558 KW |
4815 | /* Read an attribute described by an abbreviated attribute. */ |
4816 | ||
4817 | static char * | |
4818 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, | |
e7c27a73 | 4819 | bfd *abfd, char *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
4820 | { |
4821 | attr->name = abbrev->name; | |
e7c27a73 | 4822 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
4823 | } |
4824 | ||
c906108c SS |
4825 | /* read dwarf information from a buffer */ |
4826 | ||
4827 | static unsigned int | |
fba45db2 | 4828 | read_1_byte (bfd *abfd, char *buf) |
c906108c SS |
4829 | { |
4830 | return bfd_get_8 (abfd, (bfd_byte *) buf); | |
4831 | } | |
4832 | ||
4833 | static int | |
fba45db2 | 4834 | read_1_signed_byte (bfd *abfd, char *buf) |
c906108c SS |
4835 | { |
4836 | return bfd_get_signed_8 (abfd, (bfd_byte *) buf); | |
4837 | } | |
4838 | ||
4839 | static unsigned int | |
fba45db2 | 4840 | read_2_bytes (bfd *abfd, char *buf) |
c906108c SS |
4841 | { |
4842 | return bfd_get_16 (abfd, (bfd_byte *) buf); | |
4843 | } | |
4844 | ||
4845 | static int | |
fba45db2 | 4846 | read_2_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4847 | { |
4848 | return bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4849 | } | |
4850 | ||
4851 | static unsigned int | |
fba45db2 | 4852 | read_4_bytes (bfd *abfd, char *buf) |
c906108c SS |
4853 | { |
4854 | return bfd_get_32 (abfd, (bfd_byte *) buf); | |
4855 | } | |
4856 | ||
4857 | static int | |
fba45db2 | 4858 | read_4_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4859 | { |
4860 | return bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4861 | } | |
4862 | ||
ce5d95e1 | 4863 | static unsigned long |
fba45db2 | 4864 | read_8_bytes (bfd *abfd, char *buf) |
c906108c SS |
4865 | { |
4866 | return bfd_get_64 (abfd, (bfd_byte *) buf); | |
4867 | } | |
4868 | ||
4869 | static CORE_ADDR | |
e7c27a73 | 4870 | read_address (bfd *abfd, char *buf, struct dwarf2_cu *cu, int *bytes_read) |
c906108c | 4871 | { |
e7c27a73 | 4872 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4873 | CORE_ADDR retval = 0; |
4874 | ||
107d2387 | 4875 | if (cu_header->signed_addr_p) |
c906108c | 4876 | { |
107d2387 AC |
4877 | switch (cu_header->addr_size) |
4878 | { | |
4879 | case 2: | |
4880 | retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4881 | break; | |
4882 | case 4: | |
4883 | retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4884 | break; | |
4885 | case 8: | |
4886 | retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf); | |
4887 | break; | |
4888 | default: | |
8e65ff28 | 4889 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4890 | "read_address: bad switch, signed [in module %s]", |
4891 | bfd_get_filename (abfd)); | |
107d2387 AC |
4892 | } |
4893 | } | |
4894 | else | |
4895 | { | |
4896 | switch (cu_header->addr_size) | |
4897 | { | |
4898 | case 2: | |
4899 | retval = bfd_get_16 (abfd, (bfd_byte *) buf); | |
4900 | break; | |
4901 | case 4: | |
4902 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4903 | break; | |
4904 | case 8: | |
4905 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4906 | break; | |
4907 | default: | |
8e65ff28 | 4908 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4909 | "read_address: bad switch, unsigned [in module %s]", |
4910 | bfd_get_filename (abfd)); | |
107d2387 | 4911 | } |
c906108c | 4912 | } |
64367e0a | 4913 | |
107d2387 AC |
4914 | *bytes_read = cu_header->addr_size; |
4915 | return retval; | |
c906108c SS |
4916 | } |
4917 | ||
f7ef9339 | 4918 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
4919 | specification allows the initial length to take up either 4 bytes |
4920 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
4921 | bytes describe the length and all offsets will be 8 bytes in length | |
4922 | instead of 4. | |
4923 | ||
f7ef9339 KB |
4924 | An older, non-standard 64-bit format is also handled by this |
4925 | function. The older format in question stores the initial length | |
4926 | as an 8-byte quantity without an escape value. Lengths greater | |
4927 | than 2^32 aren't very common which means that the initial 4 bytes | |
4928 | is almost always zero. Since a length value of zero doesn't make | |
4929 | sense for the 32-bit format, this initial zero can be considered to | |
4930 | be an escape value which indicates the presence of the older 64-bit | |
4931 | format. As written, the code can't detect (old format) lengths | |
4932 | greater than 4GB. If it becomes necessary to handle lengths somewhat | |
4933 | larger than 4GB, we could allow other small values (such as the | |
4934 | non-sensical values of 1, 2, and 3) to also be used as escape values | |
4935 | indicating the presence of the old format. | |
4936 | ||
613e1657 KB |
4937 | The value returned via bytes_read should be used to increment |
4938 | the relevant pointer after calling read_initial_length(). | |
4939 | ||
4940 | As a side effect, this function sets the fields initial_length_size | |
4941 | and offset_size in cu_header to the values appropriate for the | |
4942 | length field. (The format of the initial length field determines | |
4943 | the width of file offsets to be fetched later with fetch_offset().) | |
4944 | ||
4945 | [ Note: read_initial_length() and read_offset() are based on the | |
4946 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 4947 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
4948 | from: |
4949 | ||
f7ef9339 | 4950 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
4951 | |
4952 | This document is only a draft and is subject to change. (So beware.) | |
4953 | ||
f7ef9339 KB |
4954 | Details regarding the older, non-standard 64-bit format were |
4955 | determined empirically by examining 64-bit ELF files produced | |
4956 | by the SGI toolchain on an IRIX 6.5 machine. | |
4957 | ||
4958 | - Kevin, July 16, 2002 | |
613e1657 KB |
4959 | ] */ |
4960 | ||
4961 | static LONGEST | |
4962 | read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header, | |
4963 | int *bytes_read) | |
4964 | { | |
4965 | LONGEST retval = 0; | |
4966 | ||
4967 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4968 | ||
4969 | if (retval == 0xffffffff) | |
4970 | { | |
4971 | retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4); | |
4972 | *bytes_read = 12; | |
4973 | if (cu_header != NULL) | |
4974 | { | |
4975 | cu_header->initial_length_size = 12; | |
4976 | cu_header->offset_size = 8; | |
4977 | } | |
4978 | } | |
f7ef9339 KB |
4979 | else if (retval == 0) |
4980 | { | |
4981 | /* Handle (non-standard) 64-bit DWARF2 formats such as that used | |
4982 | by IRIX. */ | |
4983 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4984 | *bytes_read = 8; | |
4985 | if (cu_header != NULL) | |
4986 | { | |
4987 | cu_header->initial_length_size = 8; | |
4988 | cu_header->offset_size = 8; | |
4989 | } | |
4990 | } | |
613e1657 KB |
4991 | else |
4992 | { | |
4993 | *bytes_read = 4; | |
4994 | if (cu_header != NULL) | |
4995 | { | |
4996 | cu_header->initial_length_size = 4; | |
4997 | cu_header->offset_size = 4; | |
4998 | } | |
4999 | } | |
5000 | ||
5001 | return retval; | |
5002 | } | |
5003 | ||
5004 | /* Read an offset from the data stream. The size of the offset is | |
5005 | given by cu_header->offset_size. */ | |
5006 | ||
5007 | static LONGEST | |
5008 | read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header, | |
5009 | int *bytes_read) | |
5010 | { | |
5011 | LONGEST retval = 0; | |
5012 | ||
5013 | switch (cu_header->offset_size) | |
5014 | { | |
5015 | case 4: | |
5016 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5017 | *bytes_read = 4; | |
5018 | break; | |
5019 | case 8: | |
5020 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5021 | *bytes_read = 8; | |
5022 | break; | |
5023 | default: | |
8e65ff28 | 5024 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5025 | "read_offset: bad switch [in module %s]", |
5026 | bfd_get_filename (abfd)); | |
613e1657 KB |
5027 | } |
5028 | ||
5029 | return retval; | |
5030 | } | |
5031 | ||
c906108c | 5032 | static char * |
fba45db2 | 5033 | read_n_bytes (bfd *abfd, char *buf, unsigned int size) |
c906108c SS |
5034 | { |
5035 | /* If the size of a host char is 8 bits, we can return a pointer | |
5036 | to the buffer, otherwise we have to copy the data to a buffer | |
5037 | allocated on the temporary obstack. */ | |
4bdf3d34 | 5038 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 5039 | return buf; |
c906108c SS |
5040 | } |
5041 | ||
5042 | static char * | |
fba45db2 | 5043 | read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
5044 | { |
5045 | /* If the size of a host char is 8 bits, we can return a pointer | |
5046 | to the string, otherwise we have to copy the string to a buffer | |
5047 | allocated on the temporary obstack. */ | |
4bdf3d34 | 5048 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
5049 | if (*buf == '\0') |
5050 | { | |
5051 | *bytes_read_ptr = 1; | |
5052 | return NULL; | |
5053 | } | |
5054 | *bytes_read_ptr = strlen (buf) + 1; | |
5055 | return buf; | |
4bdf3d34 JJ |
5056 | } |
5057 | ||
5058 | static char * | |
5059 | read_indirect_string (bfd *abfd, char *buf, | |
5060 | const struct comp_unit_head *cu_header, | |
5061 | unsigned int *bytes_read_ptr) | |
5062 | { | |
5063 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
5064 | (int *) bytes_read_ptr); | |
c906108c | 5065 | |
4bdf3d34 | 5066 | if (dwarf_str_buffer == NULL) |
c906108c | 5067 | { |
659b0389 ML |
5068 | error ("DW_FORM_strp used without .debug_str section [in module %s]", |
5069 | bfd_get_filename (abfd)); | |
4bdf3d34 | 5070 | return NULL; |
c906108c | 5071 | } |
4bdf3d34 | 5072 | if (str_offset >= dwarf_str_size) |
c906108c | 5073 | { |
659b0389 ML |
5074 | error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]", |
5075 | bfd_get_filename (abfd)); | |
c906108c SS |
5076 | return NULL; |
5077 | } | |
4bdf3d34 JJ |
5078 | gdb_assert (HOST_CHAR_BIT == 8); |
5079 | if (dwarf_str_buffer[str_offset] == '\0') | |
5080 | return NULL; | |
5081 | return dwarf_str_buffer + str_offset; | |
c906108c SS |
5082 | } |
5083 | ||
ce5d95e1 | 5084 | static unsigned long |
fba45db2 | 5085 | read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 5086 | { |
ce5d95e1 JB |
5087 | unsigned long result; |
5088 | unsigned int num_read; | |
c906108c SS |
5089 | int i, shift; |
5090 | unsigned char byte; | |
5091 | ||
5092 | result = 0; | |
5093 | shift = 0; | |
5094 | num_read = 0; | |
5095 | i = 0; | |
5096 | while (1) | |
5097 | { | |
5098 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
5099 | buf++; | |
5100 | num_read++; | |
ce5d95e1 | 5101 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
5102 | if ((byte & 128) == 0) |
5103 | { | |
5104 | break; | |
5105 | } | |
5106 | shift += 7; | |
5107 | } | |
5108 | *bytes_read_ptr = num_read; | |
5109 | return result; | |
5110 | } | |
5111 | ||
ce5d95e1 | 5112 | static long |
fba45db2 | 5113 | read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 5114 | { |
ce5d95e1 | 5115 | long result; |
c906108c SS |
5116 | int i, shift, size, num_read; |
5117 | unsigned char byte; | |
5118 | ||
5119 | result = 0; | |
5120 | shift = 0; | |
5121 | size = 32; | |
5122 | num_read = 0; | |
5123 | i = 0; | |
5124 | while (1) | |
5125 | { | |
5126 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
5127 | buf++; | |
5128 | num_read++; | |
ce5d95e1 | 5129 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
5130 | shift += 7; |
5131 | if ((byte & 128) == 0) | |
5132 | { | |
5133 | break; | |
5134 | } | |
5135 | } | |
5136 | if ((shift < size) && (byte & 0x40)) | |
5137 | { | |
5138 | result |= -(1 << shift); | |
5139 | } | |
5140 | *bytes_read_ptr = num_read; | |
5141 | return result; | |
5142 | } | |
5143 | ||
4bb7a0a7 DJ |
5144 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
5145 | ||
5146 | static char * | |
5147 | skip_leb128 (bfd *abfd, char *buf) | |
5148 | { | |
5149 | int byte; | |
5150 | ||
5151 | while (1) | |
5152 | { | |
5153 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
5154 | buf++; | |
5155 | if ((byte & 128) == 0) | |
5156 | return buf; | |
5157 | } | |
5158 | } | |
5159 | ||
c906108c | 5160 | static void |
e142c38c | 5161 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
5162 | { |
5163 | switch (lang) | |
5164 | { | |
5165 | case DW_LANG_C89: | |
5166 | case DW_LANG_C: | |
e142c38c | 5167 | cu->language = language_c; |
c906108c SS |
5168 | break; |
5169 | case DW_LANG_C_plus_plus: | |
e142c38c | 5170 | cu->language = language_cplus; |
c906108c SS |
5171 | break; |
5172 | case DW_LANG_Fortran77: | |
5173 | case DW_LANG_Fortran90: | |
b21b22e0 | 5174 | case DW_LANG_Fortran95: |
e142c38c | 5175 | cu->language = language_fortran; |
c906108c SS |
5176 | break; |
5177 | case DW_LANG_Mips_Assembler: | |
e142c38c | 5178 | cu->language = language_asm; |
c906108c | 5179 | break; |
bebd888e | 5180 | case DW_LANG_Java: |
e142c38c | 5181 | cu->language = language_java; |
bebd888e | 5182 | break; |
c906108c | 5183 | case DW_LANG_Ada83: |
8aaf0b47 | 5184 | case DW_LANG_Ada95: |
c906108c SS |
5185 | case DW_LANG_Cobol74: |
5186 | case DW_LANG_Cobol85: | |
5187 | case DW_LANG_Pascal83: | |
5188 | case DW_LANG_Modula2: | |
5189 | default: | |
e142c38c | 5190 | cu->language = language_minimal; |
c906108c SS |
5191 | break; |
5192 | } | |
e142c38c | 5193 | cu->language_defn = language_def (cu->language); |
c906108c SS |
5194 | } |
5195 | ||
5196 | /* Return the named attribute or NULL if not there. */ | |
5197 | ||
5198 | static struct attribute * | |
e142c38c | 5199 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
5200 | { |
5201 | unsigned int i; | |
5202 | struct attribute *spec = NULL; | |
5203 | ||
5204 | for (i = 0; i < die->num_attrs; ++i) | |
5205 | { | |
5206 | if (die->attrs[i].name == name) | |
5207 | { | |
5208 | return &die->attrs[i]; | |
5209 | } | |
5210 | if (die->attrs[i].name == DW_AT_specification | |
5211 | || die->attrs[i].name == DW_AT_abstract_origin) | |
5212 | spec = &die->attrs[i]; | |
5213 | } | |
5214 | if (spec) | |
5215 | { | |
5216 | struct die_info *ref_die = | |
e142c38c | 5217 | follow_die_ref (dwarf2_get_ref_die_offset (spec, cu)); |
c906108c SS |
5218 | |
5219 | if (ref_die) | |
e142c38c | 5220 | return dwarf2_attr (ref_die, name, cu); |
c906108c | 5221 | } |
c5aa993b | 5222 | |
c906108c SS |
5223 | return NULL; |
5224 | } | |
5225 | ||
3ca72b44 | 5226 | static int |
e142c38c | 5227 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 5228 | { |
e142c38c DJ |
5229 | return (dwarf2_attr (die, DW_AT_declaration, cu) |
5230 | && ! dwarf2_attr (die, DW_AT_specification, cu)); | |
3ca72b44 AC |
5231 | } |
5232 | ||
63d06c5c DC |
5233 | /* Return the die giving the specification for DIE, if there is |
5234 | one. */ | |
5235 | ||
5236 | static struct die_info * | |
e142c38c | 5237 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 5238 | { |
e142c38c | 5239 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
5240 | |
5241 | if (spec_attr == NULL) | |
5242 | return NULL; | |
5243 | else | |
e142c38c | 5244 | return follow_die_ref (dwarf2_get_ref_die_offset (spec_attr, cu)); |
63d06c5c | 5245 | } |
c906108c | 5246 | |
debd256d JB |
5247 | /* Free the line_header structure *LH, and any arrays and strings it |
5248 | refers to. */ | |
5249 | static void | |
5250 | free_line_header (struct line_header *lh) | |
5251 | { | |
5252 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 5253 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
5254 | |
5255 | /* Remember that all the lh->file_names[i].name pointers are | |
5256 | pointers into debug_line_buffer, and don't need to be freed. */ | |
5257 | if (lh->file_names) | |
a8bc7b56 | 5258 | xfree (lh->file_names); |
debd256d JB |
5259 | |
5260 | /* Similarly for the include directory names. */ | |
5261 | if (lh->include_dirs) | |
a8bc7b56 | 5262 | xfree (lh->include_dirs); |
debd256d | 5263 | |
a8bc7b56 | 5264 | xfree (lh); |
debd256d JB |
5265 | } |
5266 | ||
5267 | ||
5268 | /* Add an entry to LH's include directory table. */ | |
5269 | static void | |
5270 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 5271 | { |
debd256d JB |
5272 | /* Grow the array if necessary. */ |
5273 | if (lh->include_dirs_size == 0) | |
c5aa993b | 5274 | { |
debd256d JB |
5275 | lh->include_dirs_size = 1; /* for testing */ |
5276 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
5277 | * sizeof (*lh->include_dirs)); | |
5278 | } | |
5279 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
5280 | { | |
5281 | lh->include_dirs_size *= 2; | |
5282 | lh->include_dirs = xrealloc (lh->include_dirs, | |
5283 | (lh->include_dirs_size | |
5284 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 5285 | } |
c906108c | 5286 | |
debd256d JB |
5287 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
5288 | } | |
5289 | ||
5290 | ||
5291 | /* Add an entry to LH's file name table. */ | |
5292 | static void | |
5293 | add_file_name (struct line_header *lh, | |
5294 | char *name, | |
5295 | unsigned int dir_index, | |
5296 | unsigned int mod_time, | |
5297 | unsigned int length) | |
5298 | { | |
5299 | struct file_entry *fe; | |
5300 | ||
5301 | /* Grow the array if necessary. */ | |
5302 | if (lh->file_names_size == 0) | |
5303 | { | |
5304 | lh->file_names_size = 1; /* for testing */ | |
5305 | lh->file_names = xmalloc (lh->file_names_size | |
5306 | * sizeof (*lh->file_names)); | |
5307 | } | |
5308 | else if (lh->num_file_names >= lh->file_names_size) | |
5309 | { | |
5310 | lh->file_names_size *= 2; | |
5311 | lh->file_names = xrealloc (lh->file_names, | |
5312 | (lh->file_names_size | |
5313 | * sizeof (*lh->file_names))); | |
5314 | } | |
5315 | ||
5316 | fe = &lh->file_names[lh->num_file_names++]; | |
5317 | fe->name = name; | |
5318 | fe->dir_index = dir_index; | |
5319 | fe->mod_time = mod_time; | |
5320 | fe->length = length; | |
5321 | } | |
5322 | ||
5323 | ||
5324 | /* Read the statement program header starting at OFFSET in | |
5325 | dwarf_line_buffer, according to the endianness of ABFD. Return a | |
5326 | pointer to a struct line_header, allocated using xmalloc. | |
5327 | ||
5328 | NOTE: the strings in the include directory and file name tables of | |
5329 | the returned object point into debug_line_buffer, and must not be | |
5330 | freed. */ | |
5331 | static struct line_header * | |
5332 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 5333 | struct dwarf2_cu *cu) |
debd256d JB |
5334 | { |
5335 | struct cleanup *back_to; | |
5336 | struct line_header *lh; | |
5337 | char *line_ptr; | |
5338 | int bytes_read; | |
5339 | int i; | |
5340 | char *cur_dir, *cur_file; | |
5341 | ||
5342 | if (dwarf_line_buffer == NULL) | |
5343 | { | |
4d3c2250 | 5344 | complaint (&symfile_complaints, "missing .debug_line section"); |
debd256d JB |
5345 | return 0; |
5346 | } | |
5347 | ||
5348 | /* Make sure that at least there's room for the total_length field. That | |
5349 | could be 12 bytes long, but we're just going to fudge that. */ | |
5350 | if (offset + 4 >= dwarf_line_size) | |
5351 | { | |
4d3c2250 | 5352 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5353 | return 0; |
5354 | } | |
5355 | ||
5356 | lh = xmalloc (sizeof (*lh)); | |
5357 | memset (lh, 0, sizeof (*lh)); | |
5358 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
5359 | (void *) lh); | |
5360 | ||
5361 | line_ptr = dwarf_line_buffer + offset; | |
5362 | ||
5363 | /* read in the header */ | |
5364 | lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read); | |
5365 | line_ptr += bytes_read; | |
5366 | if (line_ptr + lh->total_length > dwarf_line_buffer + dwarf_line_size) | |
5367 | { | |
4d3c2250 | 5368 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5369 | return 0; |
5370 | } | |
5371 | lh->statement_program_end = line_ptr + lh->total_length; | |
5372 | lh->version = read_2_bytes (abfd, line_ptr); | |
5373 | line_ptr += 2; | |
e7c27a73 | 5374 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
5375 | line_ptr += bytes_read; |
5376 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
5377 | line_ptr += 1; | |
5378 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
5379 | line_ptr += 1; | |
5380 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
5381 | line_ptr += 1; | |
5382 | lh->line_range = read_1_byte (abfd, line_ptr); | |
5383 | line_ptr += 1; | |
5384 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
5385 | line_ptr += 1; | |
5386 | lh->standard_opcode_lengths | |
5387 | = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char)); | |
5388 | ||
5389 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
5390 | for (i = 1; i < lh->opcode_base; ++i) | |
5391 | { | |
5392 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
5393 | line_ptr += 1; | |
5394 | } | |
5395 | ||
5396 | /* Read directory table */ | |
5397 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5398 | { | |
5399 | line_ptr += bytes_read; | |
5400 | add_include_dir (lh, cur_dir); | |
5401 | } | |
5402 | line_ptr += bytes_read; | |
5403 | ||
5404 | /* Read file name table */ | |
5405 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5406 | { | |
5407 | unsigned int dir_index, mod_time, length; | |
5408 | ||
5409 | line_ptr += bytes_read; | |
5410 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5411 | line_ptr += bytes_read; | |
5412 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5413 | line_ptr += bytes_read; | |
5414 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5415 | line_ptr += bytes_read; | |
5416 | ||
5417 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5418 | } | |
5419 | line_ptr += bytes_read; | |
5420 | lh->statement_program_start = line_ptr; | |
5421 | ||
5422 | if (line_ptr > dwarf_line_buffer + dwarf_line_size) | |
4d3c2250 KB |
5423 | complaint (&symfile_complaints, |
5424 | "line number info header doesn't fit in `.debug_line' section"); | |
debd256d JB |
5425 | |
5426 | discard_cleanups (back_to); | |
5427 | return lh; | |
5428 | } | |
c906108c | 5429 | |
5fb290d7 DJ |
5430 | /* This function exists to work around a bug in certain compilers |
5431 | (particularly GCC 2.95), in which the first line number marker of a | |
5432 | function does not show up until after the prologue, right before | |
5433 | the second line number marker. This function shifts ADDRESS down | |
5434 | to the beginning of the function if necessary, and is called on | |
5435 | addresses passed to record_line. */ | |
5436 | ||
5437 | static CORE_ADDR | |
e142c38c | 5438 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
5439 | { |
5440 | struct function_range *fn; | |
5441 | ||
5442 | /* Find the function_range containing address. */ | |
e142c38c | 5443 | if (!cu->first_fn) |
5fb290d7 DJ |
5444 | return address; |
5445 | ||
e142c38c DJ |
5446 | if (!cu->cached_fn) |
5447 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 5448 | |
e142c38c | 5449 | fn = cu->cached_fn; |
5fb290d7 DJ |
5450 | while (fn) |
5451 | if (fn->lowpc <= address && fn->highpc > address) | |
5452 | goto found; | |
5453 | else | |
5454 | fn = fn->next; | |
5455 | ||
e142c38c DJ |
5456 | fn = cu->first_fn; |
5457 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
5458 | if (fn->lowpc <= address && fn->highpc > address) |
5459 | goto found; | |
5460 | else | |
5461 | fn = fn->next; | |
5462 | ||
5463 | return address; | |
5464 | ||
5465 | found: | |
5466 | if (fn->seen_line) | |
5467 | return address; | |
5468 | if (address != fn->lowpc) | |
4d3c2250 KB |
5469 | complaint (&symfile_complaints, |
5470 | "misplaced first line number at 0x%lx for '%s'", | |
5471 | (unsigned long) address, fn->name); | |
5fb290d7 DJ |
5472 | fn->seen_line = 1; |
5473 | return fn->lowpc; | |
5474 | } | |
5475 | ||
debd256d JB |
5476 | /* Decode the line number information for the compilation unit whose |
5477 | line number info is at OFFSET in the .debug_line section. | |
5478 | The compilation directory of the file is passed in COMP_DIR. */ | |
5479 | ||
c906108c | 5480 | static void |
debd256d | 5481 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
e7c27a73 | 5482 | struct dwarf2_cu *cu) |
c906108c SS |
5483 | { |
5484 | char *line_ptr; | |
5485 | char *line_end; | |
e7c27a73 | 5486 | unsigned int bytes_read; |
c906108c | 5487 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
5488 | CORE_ADDR baseaddr; |
5489 | struct objfile *objfile = cu->objfile; | |
5490 | ||
5491 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5492 | |
debd256d JB |
5493 | line_ptr = lh->statement_program_start; |
5494 | line_end = lh->statement_program_end; | |
c906108c SS |
5495 | |
5496 | /* Read the statement sequences until there's nothing left. */ | |
5497 | while (line_ptr < line_end) | |
5498 | { | |
5499 | /* state machine registers */ | |
5500 | CORE_ADDR address = 0; | |
5501 | unsigned int file = 1; | |
5502 | unsigned int line = 1; | |
5503 | unsigned int column = 0; | |
debd256d | 5504 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
5505 | int basic_block = 0; |
5506 | int end_sequence = 0; | |
5507 | ||
5508 | /* Start a subfile for the current file of the state machine. */ | |
debd256d | 5509 | if (lh->num_file_names >= file) |
c906108c | 5510 | { |
debd256d JB |
5511 | /* lh->include_dirs and lh->file_names are 0-based, but the |
5512 | directory and file name numbers in the statement program | |
5513 | are 1-based. */ | |
5514 | struct file_entry *fe = &lh->file_names[file - 1]; | |
5515 | char *dir; | |
5516 | if (fe->dir_index) | |
5517 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5518 | else | |
5519 | dir = comp_dir; | |
5520 | dwarf2_start_subfile (fe->name, dir); | |
c906108c SS |
5521 | } |
5522 | ||
5523 | /* Decode the table. */ | |
c5aa993b | 5524 | while (!end_sequence) |
c906108c SS |
5525 | { |
5526 | op_code = read_1_byte (abfd, line_ptr); | |
5527 | line_ptr += 1; | |
9aa1fe7e | 5528 | |
debd256d | 5529 | if (op_code >= lh->opcode_base) |
9aa1fe7e | 5530 | { /* Special operand. */ |
debd256d JB |
5531 | adj_opcode = op_code - lh->opcode_base; |
5532 | address += (adj_opcode / lh->line_range) | |
5533 | * lh->minimum_instruction_length; | |
5534 | line += lh->line_base + (adj_opcode % lh->line_range); | |
9aa1fe7e | 5535 | /* append row to matrix using current values */ |
ddf9f258 | 5536 | record_line (current_subfile, line, |
e142c38c | 5537 | check_cu_functions (address, cu)); |
9aa1fe7e GK |
5538 | basic_block = 1; |
5539 | } | |
5540 | else switch (op_code) | |
c906108c SS |
5541 | { |
5542 | case DW_LNS_extended_op: | |
5543 | line_ptr += 1; /* ignore length */ | |
5544 | extended_op = read_1_byte (abfd, line_ptr); | |
5545 | line_ptr += 1; | |
5546 | switch (extended_op) | |
5547 | { | |
5548 | case DW_LNE_end_sequence: | |
5549 | end_sequence = 1; | |
5fb290d7 | 5550 | record_line (current_subfile, 0, address); |
c906108c SS |
5551 | break; |
5552 | case DW_LNE_set_address: | |
e7c27a73 | 5553 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
5554 | line_ptr += bytes_read; |
5555 | address += baseaddr; | |
c906108c SS |
5556 | break; |
5557 | case DW_LNE_define_file: | |
debd256d JB |
5558 | { |
5559 | char *cur_file; | |
5560 | unsigned int dir_index, mod_time, length; | |
5561 | ||
5562 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
5563 | line_ptr += bytes_read; | |
5564 | dir_index = | |
5565 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5566 | line_ptr += bytes_read; | |
5567 | mod_time = | |
5568 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5569 | line_ptr += bytes_read; | |
5570 | length = | |
5571 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5572 | line_ptr += bytes_read; | |
5573 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5574 | } | |
c906108c SS |
5575 | break; |
5576 | default: | |
4d3c2250 KB |
5577 | complaint (&symfile_complaints, |
5578 | "mangled .debug_line section"); | |
debd256d | 5579 | return; |
c906108c SS |
5580 | } |
5581 | break; | |
5582 | case DW_LNS_copy: | |
ddf9f258 | 5583 | record_line (current_subfile, line, |
e142c38c | 5584 | check_cu_functions (address, cu)); |
c906108c SS |
5585 | basic_block = 0; |
5586 | break; | |
5587 | case DW_LNS_advance_pc: | |
debd256d | 5588 | address += lh->minimum_instruction_length |
c906108c SS |
5589 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
5590 | line_ptr += bytes_read; | |
5591 | break; | |
5592 | case DW_LNS_advance_line: | |
5593 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
5594 | line_ptr += bytes_read; | |
5595 | break; | |
5596 | case DW_LNS_set_file: | |
debd256d JB |
5597 | { |
5598 | /* lh->include_dirs and lh->file_names are 0-based, | |
5599 | but the directory and file name numbers in the | |
5600 | statement program are 1-based. */ | |
5601 | struct file_entry *fe; | |
5602 | char *dir; | |
5603 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5604 | line_ptr += bytes_read; | |
5605 | fe = &lh->file_names[file - 1]; | |
5606 | if (fe->dir_index) | |
5607 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5608 | else | |
5609 | dir = comp_dir; | |
5610 | dwarf2_start_subfile (fe->name, dir); | |
5611 | } | |
c906108c SS |
5612 | break; |
5613 | case DW_LNS_set_column: | |
5614 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5615 | line_ptr += bytes_read; | |
5616 | break; | |
5617 | case DW_LNS_negate_stmt: | |
5618 | is_stmt = (!is_stmt); | |
5619 | break; | |
5620 | case DW_LNS_set_basic_block: | |
5621 | basic_block = 1; | |
5622 | break; | |
c2c6d25f JM |
5623 | /* Add to the address register of the state machine the |
5624 | address increment value corresponding to special opcode | |
5625 | 255. Ie, this value is scaled by the minimum instruction | |
5626 | length since special opcode 255 would have scaled the | |
5627 | the increment. */ | |
c906108c | 5628 | case DW_LNS_const_add_pc: |
debd256d JB |
5629 | address += (lh->minimum_instruction_length |
5630 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
5631 | break; |
5632 | case DW_LNS_fixed_advance_pc: | |
5633 | address += read_2_bytes (abfd, line_ptr); | |
5634 | line_ptr += 2; | |
5635 | break; | |
9aa1fe7e GK |
5636 | default: |
5637 | { /* Unknown standard opcode, ignore it. */ | |
5638 | int i; | |
debd256d | 5639 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
5640 | { |
5641 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5642 | line_ptr += bytes_read; | |
5643 | } | |
5644 | } | |
c906108c SS |
5645 | } |
5646 | } | |
5647 | } | |
c906108c SS |
5648 | } |
5649 | ||
5650 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
5651 | DIRNAME the name of the source directory which contains FILENAME | |
5652 | or NULL if not known. | |
5653 | This routine tries to keep line numbers from identical absolute and | |
5654 | relative file names in a common subfile. | |
5655 | ||
5656 | Using the `list' example from the GDB testsuite, which resides in | |
5657 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
5658 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
5659 | ||
c5aa993b JM |
5660 | DW_AT_name: /srcdir/list0.c |
5661 | DW_AT_comp_dir: /compdir | |
357e46e7 | 5662 | files.files[0].name: list0.h |
c5aa993b | 5663 | files.files[0].dir: /srcdir |
357e46e7 | 5664 | files.files[1].name: list0.c |
c5aa993b | 5665 | files.files[1].dir: /srcdir |
c906108c SS |
5666 | |
5667 | The line number information for list0.c has to end up in a single | |
5668 | subfile, so that `break /srcdir/list0.c:1' works as expected. */ | |
5669 | ||
5670 | static void | |
fba45db2 | 5671 | dwarf2_start_subfile (char *filename, char *dirname) |
c906108c SS |
5672 | { |
5673 | /* If the filename isn't absolute, try to match an existing subfile | |
5674 | with the full pathname. */ | |
5675 | ||
d5166ae1 | 5676 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
c906108c SS |
5677 | { |
5678 | struct subfile *subfile; | |
5679 | char *fullname = concat (dirname, "/", filename, NULL); | |
5680 | ||
5681 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
5682 | { | |
d5166ae1 | 5683 | if (FILENAME_CMP (subfile->name, fullname) == 0) |
c906108c SS |
5684 | { |
5685 | current_subfile = subfile; | |
b8c9b27d | 5686 | xfree (fullname); |
c906108c SS |
5687 | return; |
5688 | } | |
5689 | } | |
b8c9b27d | 5690 | xfree (fullname); |
c906108c SS |
5691 | } |
5692 | start_subfile (filename, dirname); | |
5693 | } | |
5694 | ||
4c2df51b DJ |
5695 | static void |
5696 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 5697 | struct dwarf2_cu *cu) |
4c2df51b | 5698 | { |
e7c27a73 DJ |
5699 | struct objfile *objfile = cu->objfile; |
5700 | struct comp_unit_head *cu_header = &cu->header; | |
5701 | ||
4c2df51b DJ |
5702 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
5703 | code here to turn a symbol with DW_AT_external and a | |
5704 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
5705 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
5706 | with some versions of binutils) where shared libraries could have | |
5707 | relocations against symbols in their debug information - the | |
5708 | minimal symbol would have the right address, but the debug info | |
5709 | would not. It's no longer necessary, because we will explicitly | |
5710 | apply relocations when we read in the debug information now. */ | |
5711 | ||
5712 | /* A DW_AT_location attribute with no contents indicates that a | |
5713 | variable has been optimized away. */ | |
5714 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
5715 | { | |
5716 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
5717 | return; | |
5718 | } | |
5719 | ||
5720 | /* Handle one degenerate form of location expression specially, to | |
5721 | preserve GDB's previous behavior when section offsets are | |
5722 | specified. If this is just a DW_OP_addr then mark this symbol | |
5723 | as LOC_STATIC. */ | |
5724 | ||
5725 | if (attr_form_is_block (attr) | |
5726 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
5727 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
5728 | { | |
5729 | int dummy; | |
5730 | ||
5731 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 5732 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
5733 | fixup_symbol_section (sym, objfile); |
5734 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
5735 | SYMBOL_SECTION (sym)); | |
5736 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
5737 | return; | |
5738 | } | |
5739 | ||
5740 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
5741 | expression evaluator, and use LOC_COMPUTED only when necessary | |
5742 | (i.e. when the value of a register or memory location is | |
5743 | referenced, or a thread-local block, etc.). Then again, it might | |
5744 | not be worthwhile. I'm assuming that it isn't unless performance | |
5745 | or memory numbers show me otherwise. */ | |
5746 | ||
e7c27a73 | 5747 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
5748 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
5749 | } | |
5750 | ||
c906108c SS |
5751 | /* Given a pointer to a DWARF information entry, figure out if we need |
5752 | to make a symbol table entry for it, and if so, create a new entry | |
5753 | and return a pointer to it. | |
5754 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 5755 | used the passed type. */ |
c906108c SS |
5756 | |
5757 | static struct symbol * | |
e7c27a73 | 5758 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 5759 | { |
e7c27a73 | 5760 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5761 | struct symbol *sym = NULL; |
5762 | char *name; | |
5763 | struct attribute *attr = NULL; | |
5764 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
5765 | CORE_ADDR baseaddr; |
5766 | ||
5767 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5768 | |
5c4e30ca | 5769 | if (die->tag != DW_TAG_namespace) |
e142c38c | 5770 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
5771 | else |
5772 | name = TYPE_NAME (type); | |
5773 | ||
c906108c SS |
5774 | if (name) |
5775 | { | |
4a146b47 | 5776 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
5777 | sizeof (struct symbol)); |
5778 | OBJSTAT (objfile, n_syms++); | |
5779 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
5780 | |
5781 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 5782 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 5783 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
5784 | |
5785 | /* Default assumptions. | |
c5aa993b | 5786 | Use the passed type or decode it from the die. */ |
176620f1 | 5787 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
5788 | SYMBOL_CLASS (sym) = LOC_STATIC; |
5789 | if (type != NULL) | |
5790 | SYMBOL_TYPE (sym) = type; | |
5791 | else | |
e7c27a73 | 5792 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 5793 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
5794 | if (attr) |
5795 | { | |
5796 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
5797 | } | |
c906108c SS |
5798 | switch (die->tag) |
5799 | { | |
5800 | case DW_TAG_label: | |
e142c38c | 5801 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
5802 | if (attr) |
5803 | { | |
5804 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
5805 | } | |
5806 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
5807 | break; | |
5808 | case DW_TAG_subprogram: | |
5809 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
5810 | finish_block. */ | |
5811 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 5812 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5813 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5814 | { | |
5815 | add_symbol_to_list (sym, &global_symbols); | |
5816 | } | |
5817 | else | |
5818 | { | |
e142c38c | 5819 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5820 | } |
5821 | break; | |
5822 | case DW_TAG_variable: | |
5823 | /* Compilation with minimal debug info may result in variables | |
5824 | with missing type entries. Change the misleading `void' type | |
5825 | to something sensible. */ | |
5826 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
5827 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
5828 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5829 | "<variable, no debug info>", | |
5830 | objfile); | |
e142c38c | 5831 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5832 | if (attr) |
5833 | { | |
e7c27a73 | 5834 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 5835 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5836 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5837 | add_symbol_to_list (sym, &global_symbols); | |
5838 | else | |
e142c38c | 5839 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5840 | break; |
5841 | } | |
e142c38c | 5842 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5843 | if (attr) |
5844 | { | |
e7c27a73 | 5845 | var_decode_location (attr, sym, cu); |
e142c38c | 5846 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5847 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 5848 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 5849 | else |
e142c38c | 5850 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5851 | } |
5852 | else | |
5853 | { | |
5854 | /* We do not know the address of this symbol. | |
c5aa993b JM |
5855 | If it is an external symbol and we have type information |
5856 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
5857 | The address of the variable will then be determined from | |
5858 | the minimal symbol table whenever the variable is | |
5859 | referenced. */ | |
e142c38c | 5860 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5861 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 5862 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
5863 | { |
5864 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
5865 | add_symbol_to_list (sym, &global_symbols); | |
5866 | } | |
5867 | } | |
5868 | break; | |
5869 | case DW_TAG_formal_parameter: | |
e142c38c | 5870 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5871 | if (attr) |
5872 | { | |
e7c27a73 | 5873 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
5874 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
5875 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
5876 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 5877 | } |
e142c38c | 5878 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5879 | if (attr) |
5880 | { | |
e7c27a73 | 5881 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5882 | } |
e142c38c | 5883 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5884 | break; |
5885 | case DW_TAG_unspecified_parameters: | |
5886 | /* From varargs functions; gdb doesn't seem to have any | |
5887 | interest in this information, so just ignore it for now. | |
5888 | (FIXME?) */ | |
5889 | break; | |
5890 | case DW_TAG_class_type: | |
5891 | case DW_TAG_structure_type: | |
5892 | case DW_TAG_union_type: | |
5893 | case DW_TAG_enumeration_type: | |
5894 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 5895 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 5896 | |
63d06c5c DC |
5897 | /* Make sure that the symbol includes appropriate enclosing |
5898 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 5899 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
5900 | the type. */ |
5901 | ||
e142c38c | 5902 | if (cu->language == language_cplus) |
c906108c | 5903 | { |
63d06c5c DC |
5904 | struct type *type = SYMBOL_TYPE (sym); |
5905 | ||
5906 | if (TYPE_TAG_NAME (type) != NULL) | |
5907 | { | |
5908 | /* FIXME: carlton/2003-11-10: Should this use | |
5909 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
5910 | arises further down in this function.) */ |
5911 | /* The type's name is already allocated along with | |
5912 | this objfile, so we don't need to duplicate it | |
5913 | for the symbol. */ | |
5914 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 5915 | } |
c906108c | 5916 | } |
63d06c5c DC |
5917 | |
5918 | { | |
5919 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't | |
5920 | really ever be static objects: otherwise, if you try | |
5921 | to, say, break of a class's method and you're in a file | |
5922 | which doesn't mention that class, it won't work unless | |
5923 | the check for all static symbols in lookup_symbol_aux | |
5924 | saves you. See the OtherFileClass tests in | |
5925 | gdb.c++/namespace.exp. */ | |
5926 | ||
5927 | struct pending **list_to_add; | |
5928 | ||
e142c38c DJ |
5929 | list_to_add = (cu->list_in_scope == &file_symbols |
5930 | && cu->language == language_cplus | |
5931 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5932 | |
5933 | add_symbol_to_list (sym, list_to_add); | |
5934 | ||
5935 | /* The semantics of C++ state that "struct foo { ... }" also | |
5936 | defines a typedef for "foo". Synthesize a typedef symbol so | |
5937 | that "ptype foo" works as expected. */ | |
e142c38c | 5938 | if (cu->language == language_cplus) |
63d06c5c DC |
5939 | { |
5940 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 5941 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
5942 | sizeof (struct symbol)); |
5943 | *typedef_sym = *sym; | |
5944 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
5945 | /* The symbol's name is already allocated along with |
5946 | this objfile, so we don't need to duplicate it for | |
5947 | the type. */ | |
63d06c5c | 5948 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
d8151005 | 5949 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NATURAL_NAME (sym); |
63d06c5c DC |
5950 | add_symbol_to_list (typedef_sym, list_to_add); |
5951 | } | |
5952 | } | |
c906108c SS |
5953 | break; |
5954 | case DW_TAG_typedef: | |
63d06c5c DC |
5955 | if (processing_has_namespace_info |
5956 | && processing_current_prefix[0] != '\0') | |
5957 | { | |
4a146b47 | 5958 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5959 | processing_current_prefix, |
5960 | "::", | |
5961 | name); | |
5962 | } | |
5963 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5964 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 5965 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 5966 | break; |
c906108c | 5967 | case DW_TAG_base_type: |
a02abb62 | 5968 | case DW_TAG_subrange_type: |
c906108c | 5969 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 5970 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 5971 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5972 | break; |
5973 | case DW_TAG_enumerator: | |
63d06c5c DC |
5974 | if (processing_has_namespace_info |
5975 | && processing_current_prefix[0] != '\0') | |
5976 | { | |
4a146b47 | 5977 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5978 | processing_current_prefix, |
5979 | "::", | |
5980 | name); | |
5981 | } | |
e142c38c | 5982 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5983 | if (attr) |
5984 | { | |
e7c27a73 | 5985 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5986 | } |
63d06c5c DC |
5987 | { |
5988 | /* NOTE: carlton/2003-11-10: See comment above in the | |
5989 | DW_TAG_class_type, etc. block. */ | |
5990 | ||
5991 | struct pending **list_to_add; | |
5992 | ||
e142c38c DJ |
5993 | list_to_add = (cu->list_in_scope == &file_symbols |
5994 | && cu->language == language_cplus | |
5995 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5996 | |
5997 | add_symbol_to_list (sym, list_to_add); | |
5998 | } | |
c906108c | 5999 | break; |
5c4e30ca DC |
6000 | case DW_TAG_namespace: |
6001 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6002 | add_symbol_to_list (sym, &global_symbols); | |
6003 | break; | |
c906108c SS |
6004 | default: |
6005 | /* Not a tag we recognize. Hopefully we aren't processing | |
6006 | trash data, but since we must specifically ignore things | |
6007 | we don't recognize, there is nothing else we should do at | |
6008 | this point. */ | |
4d3c2250 KB |
6009 | complaint (&symfile_complaints, "unsupported tag: '%s'", |
6010 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6011 | break; |
6012 | } | |
6013 | } | |
6014 | return (sym); | |
6015 | } | |
6016 | ||
6017 | /* Copy constant value from an attribute to a symbol. */ | |
6018 | ||
6019 | static void | |
107d2387 | 6020 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 6021 | struct dwarf2_cu *cu) |
c906108c | 6022 | { |
e7c27a73 DJ |
6023 | struct objfile *objfile = cu->objfile; |
6024 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
6025 | struct dwarf_block *blk; |
6026 | ||
6027 | switch (attr->form) | |
6028 | { | |
6029 | case DW_FORM_addr: | |
107d2387 | 6030 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 6031 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
6032 | cu_header->addr_size, |
6033 | TYPE_LENGTH (SYMBOL_TYPE | |
6034 | (sym))); | |
c906108c | 6035 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 6036 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
6037 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
6038 | it's body - store_unsigned_integer. */ | |
6039 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
6040 | DW_ADDR (attr)); | |
c906108c SS |
6041 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
6042 | break; | |
6043 | case DW_FORM_block1: | |
6044 | case DW_FORM_block2: | |
6045 | case DW_FORM_block4: | |
6046 | case DW_FORM_block: | |
6047 | blk = DW_BLOCK (attr); | |
6048 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 6049 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
6050 | blk->size, |
6051 | TYPE_LENGTH (SYMBOL_TYPE | |
6052 | (sym))); | |
c906108c | 6053 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 6054 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
6055 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
6056 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
6057 | break; | |
2df3850c JM |
6058 | |
6059 | /* The DW_AT_const_value attributes are supposed to carry the | |
6060 | symbol's value "represented as it would be on the target | |
6061 | architecture." By the time we get here, it's already been | |
6062 | converted to host endianness, so we just need to sign- or | |
6063 | zero-extend it as appropriate. */ | |
6064 | case DW_FORM_data1: | |
6065 | dwarf2_const_value_data (attr, sym, 8); | |
6066 | break; | |
c906108c | 6067 | case DW_FORM_data2: |
2df3850c JM |
6068 | dwarf2_const_value_data (attr, sym, 16); |
6069 | break; | |
c906108c | 6070 | case DW_FORM_data4: |
2df3850c JM |
6071 | dwarf2_const_value_data (attr, sym, 32); |
6072 | break; | |
c906108c | 6073 | case DW_FORM_data8: |
2df3850c JM |
6074 | dwarf2_const_value_data (attr, sym, 64); |
6075 | break; | |
6076 | ||
c906108c | 6077 | case DW_FORM_sdata: |
2df3850c JM |
6078 | SYMBOL_VALUE (sym) = DW_SND (attr); |
6079 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6080 | break; | |
6081 | ||
c906108c SS |
6082 | case DW_FORM_udata: |
6083 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
6084 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6085 | break; | |
2df3850c | 6086 | |
c906108c | 6087 | default: |
4d3c2250 KB |
6088 | complaint (&symfile_complaints, |
6089 | "unsupported const value attribute form: '%s'", | |
6090 | dwarf_form_name (attr->form)); | |
c906108c SS |
6091 | SYMBOL_VALUE (sym) = 0; |
6092 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6093 | break; | |
6094 | } | |
6095 | } | |
6096 | ||
2df3850c JM |
6097 | |
6098 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
6099 | or zero-extend it as appropriate for the symbol's type. */ | |
6100 | static void | |
6101 | dwarf2_const_value_data (struct attribute *attr, | |
6102 | struct symbol *sym, | |
6103 | int bits) | |
6104 | { | |
6105 | LONGEST l = DW_UNSND (attr); | |
6106 | ||
6107 | if (bits < sizeof (l) * 8) | |
6108 | { | |
6109 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
6110 | l &= ((LONGEST) 1 << bits) - 1; | |
6111 | else | |
bf9198f1 | 6112 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
6113 | } |
6114 | ||
6115 | SYMBOL_VALUE (sym) = l; | |
6116 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6117 | } | |
6118 | ||
6119 | ||
c906108c SS |
6120 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
6121 | ||
6122 | static struct type * | |
e7c27a73 | 6123 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6124 | { |
6125 | struct type *type; | |
6126 | struct attribute *type_attr; | |
6127 | struct die_info *type_die; | |
6128 | unsigned int ref; | |
6129 | ||
e142c38c | 6130 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
6131 | if (!type_attr) |
6132 | { | |
6133 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 6134 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
6135 | } |
6136 | else | |
6137 | { | |
e142c38c | 6138 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
6139 | type_die = follow_die_ref (ref); |
6140 | if (!type_die) | |
6141 | { | |
659b0389 | 6142 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", |
e7c27a73 | 6143 | ref, cu->objfile->name); |
c906108c SS |
6144 | return NULL; |
6145 | } | |
6146 | } | |
e7c27a73 | 6147 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
6148 | if (!type) |
6149 | { | |
6150 | dump_die (type_die); | |
659b0389 | 6151 | error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]", |
e7c27a73 | 6152 | cu->objfile->name); |
c906108c SS |
6153 | } |
6154 | return type; | |
6155 | } | |
6156 | ||
6157 | /* Return the containing type of the die in question using its | |
6158 | DW_AT_containing_type attribute. */ | |
6159 | ||
6160 | static struct type * | |
e7c27a73 | 6161 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6162 | { |
6163 | struct type *type = NULL; | |
6164 | struct attribute *type_attr; | |
6165 | struct die_info *type_die = NULL; | |
6166 | unsigned int ref; | |
6167 | ||
e142c38c | 6168 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
6169 | if (type_attr) |
6170 | { | |
e142c38c | 6171 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
6172 | type_die = follow_die_ref (ref); |
6173 | if (!type_die) | |
6174 | { | |
659b0389 | 6175 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", ref, |
e7c27a73 | 6176 | cu->objfile->name); |
c906108c SS |
6177 | return NULL; |
6178 | } | |
e7c27a73 | 6179 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
6180 | } |
6181 | if (!type) | |
6182 | { | |
6183 | if (type_die) | |
6184 | dump_die (type_die); | |
659b0389 | 6185 | error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]", |
e7c27a73 | 6186 | cu->objfile->name); |
c906108c SS |
6187 | } |
6188 | return type; | |
6189 | } | |
6190 | ||
6191 | #if 0 | |
6192 | static struct type * | |
e7c27a73 | 6193 | type_at_offset (unsigned int offset, struct dwarf2_cu *cu) |
c906108c SS |
6194 | { |
6195 | struct die_info *die; | |
6196 | struct type *type; | |
6197 | ||
6198 | die = follow_die_ref (offset); | |
6199 | if (!die) | |
6200 | { | |
6201 | error ("Dwarf Error: Cannot find type referent at offset %d.", offset); | |
6202 | return NULL; | |
6203 | } | |
e7c27a73 | 6204 | type = tag_type_to_type (die, cu); |
c906108c SS |
6205 | return type; |
6206 | } | |
6207 | #endif | |
6208 | ||
6209 | static struct type * | |
e7c27a73 | 6210 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6211 | { |
6212 | if (die->type) | |
6213 | { | |
6214 | return die->type; | |
6215 | } | |
6216 | else | |
6217 | { | |
e7c27a73 | 6218 | read_type_die (die, cu); |
c906108c SS |
6219 | if (!die->type) |
6220 | { | |
6221 | dump_die (die); | |
659b0389 | 6222 | error ("Dwarf Error: Cannot find type of die [in module %s]", |
e7c27a73 | 6223 | cu->objfile->name); |
c906108c SS |
6224 | } |
6225 | return die->type; | |
6226 | } | |
6227 | } | |
6228 | ||
6229 | static void | |
e7c27a73 | 6230 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6231 | { |
e142c38c | 6232 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
6233 | const char *old_prefix = processing_current_prefix; |
6234 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
6235 | processing_current_prefix = prefix; | |
6236 | ||
c906108c SS |
6237 | switch (die->tag) |
6238 | { | |
6239 | case DW_TAG_class_type: | |
6240 | case DW_TAG_structure_type: | |
6241 | case DW_TAG_union_type: | |
134d01f1 | 6242 | read_structure_type (die, cu); |
c906108c SS |
6243 | break; |
6244 | case DW_TAG_enumeration_type: | |
134d01f1 | 6245 | read_enumeration_type (die, cu); |
c906108c SS |
6246 | break; |
6247 | case DW_TAG_subprogram: | |
6248 | case DW_TAG_subroutine_type: | |
e7c27a73 | 6249 | read_subroutine_type (die, cu); |
c906108c SS |
6250 | break; |
6251 | case DW_TAG_array_type: | |
e7c27a73 | 6252 | read_array_type (die, cu); |
c906108c SS |
6253 | break; |
6254 | case DW_TAG_pointer_type: | |
e7c27a73 | 6255 | read_tag_pointer_type (die, cu); |
c906108c SS |
6256 | break; |
6257 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 6258 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
6259 | break; |
6260 | case DW_TAG_reference_type: | |
e7c27a73 | 6261 | read_tag_reference_type (die, cu); |
c906108c SS |
6262 | break; |
6263 | case DW_TAG_const_type: | |
e7c27a73 | 6264 | read_tag_const_type (die, cu); |
c906108c SS |
6265 | break; |
6266 | case DW_TAG_volatile_type: | |
e7c27a73 | 6267 | read_tag_volatile_type (die, cu); |
c906108c SS |
6268 | break; |
6269 | case DW_TAG_string_type: | |
e7c27a73 | 6270 | read_tag_string_type (die, cu); |
c906108c SS |
6271 | break; |
6272 | case DW_TAG_typedef: | |
e7c27a73 | 6273 | read_typedef (die, cu); |
c906108c | 6274 | break; |
a02abb62 JB |
6275 | case DW_TAG_subrange_type: |
6276 | read_subrange_type (die, cu); | |
6277 | break; | |
c906108c | 6278 | case DW_TAG_base_type: |
e7c27a73 | 6279 | read_base_type (die, cu); |
c906108c SS |
6280 | break; |
6281 | default: | |
4d3c2250 KB |
6282 | complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'", |
6283 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6284 | break; |
6285 | } | |
63d06c5c DC |
6286 | |
6287 | processing_current_prefix = old_prefix; | |
6288 | do_cleanups (back_to); | |
6289 | } | |
6290 | ||
fdde2d81 DC |
6291 | /* Return the name of the namespace/class that DIE is defined within, |
6292 | or "" if we can't tell. The caller should xfree the result. */ | |
6293 | ||
6294 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
6295 | therein) for an example of how to use this function to deal with | |
6296 | DW_AT_specification. */ | |
6297 | ||
6298 | static char * | |
e142c38c | 6299 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
fdde2d81 | 6300 | { |
e142c38c | 6301 | char *prefix = determine_prefix_aux (die, cu); |
fdde2d81 DC |
6302 | |
6303 | return prefix ? prefix : xstrdup (""); | |
6304 | } | |
6305 | ||
63d06c5c DC |
6306 | /* Return the name of the namespace/class that DIE is defined |
6307 | within, or NULL if we can't tell. The caller should xfree the | |
6308 | result. */ | |
6309 | ||
6310 | static char * | |
e142c38c | 6311 | determine_prefix_aux (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6312 | { |
6313 | struct die_info *parent; | |
6314 | ||
e142c38c | 6315 | if (cu->language != language_cplus) |
63d06c5c DC |
6316 | return NULL; |
6317 | ||
6318 | parent = die->parent; | |
6319 | ||
6320 | if (parent == NULL) | |
6321 | { | |
6322 | return (processing_has_namespace_info ? xstrdup ("") : NULL); | |
6323 | } | |
6324 | else | |
6325 | { | |
e142c38c | 6326 | char *parent_prefix = determine_prefix_aux (parent, cu); |
63d06c5c DC |
6327 | char *retval; |
6328 | ||
6329 | switch (parent->tag) { | |
6330 | case DW_TAG_namespace: | |
6331 | { | |
6332 | int dummy; | |
6333 | ||
6334 | retval = typename_concat (parent_prefix, | |
e142c38c | 6335 | namespace_name (parent, &dummy, cu)); |
63d06c5c DC |
6336 | } |
6337 | break; | |
6338 | case DW_TAG_class_type: | |
6339 | case DW_TAG_structure_type: | |
6340 | { | |
6341 | if (parent_prefix != NULL) | |
6342 | { | |
e142c38c | 6343 | const char *parent_name = dwarf2_name (parent, cu); |
63d06c5c DC |
6344 | |
6345 | if (parent_name != NULL) | |
e142c38c | 6346 | retval = typename_concat (parent_prefix, dwarf2_name (parent, cu)); |
63d06c5c DC |
6347 | else |
6348 | /* FIXME: carlton/2003-11-10: I'm not sure what the | |
6349 | best thing to do here is. */ | |
6350 | retval = typename_concat (parent_prefix, | |
6351 | "<<anonymous class>>"); | |
6352 | } | |
6353 | else | |
e142c38c | 6354 | retval = class_name (parent, cu); |
63d06c5c DC |
6355 | } |
6356 | break; | |
6357 | default: | |
6358 | retval = parent_prefix; | |
6359 | break; | |
6360 | } | |
6361 | ||
6362 | if (retval != parent_prefix) | |
6363 | xfree (parent_prefix); | |
6364 | return retval; | |
6365 | } | |
6366 | } | |
6367 | ||
6368 | /* Return a newly-allocated string formed by concatenating PREFIX, | |
6369 | "::", and SUFFIX, except that if PREFIX is NULL or the empty | |
6370 | string, just return a copy of SUFFIX. */ | |
6371 | ||
6372 | static char * | |
6373 | typename_concat (const char *prefix, const char *suffix) | |
6374 | { | |
6375 | if (prefix == NULL || prefix[0] == '\0') | |
6376 | return xstrdup (suffix); | |
6377 | else | |
6378 | { | |
6379 | char *retval = xmalloc (strlen (prefix) + 2 + strlen (suffix) + 1); | |
6380 | ||
6381 | strcpy (retval, prefix); | |
6382 | strcat (retval, "::"); | |
6383 | strcat (retval, suffix); | |
6384 | ||
6385 | return retval; | |
6386 | } | |
6387 | } | |
6388 | ||
6389 | /* Return a newly-allocated string giving the name of the class given | |
6390 | by DIE. */ | |
6391 | ||
6392 | static char * | |
e142c38c | 6393 | class_name (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6394 | { |
6395 | struct die_info *child; | |
6396 | const char *name; | |
6397 | ||
6398 | for (child = die->child; child != NULL; child = sibling_die (child)) | |
6399 | { | |
6400 | if (child->tag == DW_TAG_subprogram) | |
e142c38c | 6401 | return class_name_from_physname (dwarf2_linkage_name (child, cu)); |
63d06c5c DC |
6402 | } |
6403 | ||
e142c38c | 6404 | name = dwarf2_name (die, cu); |
63d06c5c DC |
6405 | if (name != NULL) |
6406 | return xstrdup (name); | |
6407 | else | |
6408 | return xstrdup (""); | |
c906108c SS |
6409 | } |
6410 | ||
6411 | static struct type * | |
e7c27a73 | 6412 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 6413 | { |
e7c27a73 DJ |
6414 | struct objfile *objfile = cu->objfile; |
6415 | ||
c906108c SS |
6416 | /* FIXME - this should not produce a new (struct type *) |
6417 | every time. It should cache base types. */ | |
6418 | struct type *type; | |
6419 | switch (encoding) | |
6420 | { | |
6421 | case DW_ATE_address: | |
e142c38c | 6422 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
6423 | return type; |
6424 | case DW_ATE_boolean: | |
e142c38c | 6425 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
6426 | return type; |
6427 | case DW_ATE_complex_float: | |
6428 | if (size == 16) | |
6429 | { | |
e142c38c | 6430 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
6431 | } |
6432 | else | |
6433 | { | |
e142c38c | 6434 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
6435 | } |
6436 | return type; | |
6437 | case DW_ATE_float: | |
6438 | if (size == 8) | |
6439 | { | |
e142c38c | 6440 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
6441 | } |
6442 | else | |
6443 | { | |
e142c38c | 6444 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
6445 | } |
6446 | return type; | |
6447 | case DW_ATE_signed: | |
6448 | switch (size) | |
6449 | { | |
6450 | case 1: | |
e142c38c | 6451 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6452 | break; |
6453 | case 2: | |
e142c38c | 6454 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
6455 | break; |
6456 | default: | |
6457 | case 4: | |
e142c38c | 6458 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6459 | break; |
6460 | } | |
6461 | return type; | |
6462 | case DW_ATE_signed_char: | |
e142c38c | 6463 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6464 | return type; |
6465 | case DW_ATE_unsigned: | |
6466 | switch (size) | |
6467 | { | |
6468 | case 1: | |
e142c38c | 6469 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6470 | break; |
6471 | case 2: | |
e142c38c | 6472 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
6473 | break; |
6474 | default: | |
6475 | case 4: | |
e142c38c | 6476 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
6477 | break; |
6478 | } | |
6479 | return type; | |
6480 | case DW_ATE_unsigned_char: | |
e142c38c | 6481 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6482 | return type; |
6483 | default: | |
e142c38c | 6484 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6485 | return type; |
6486 | } | |
6487 | } | |
6488 | ||
6489 | #if 0 | |
6490 | struct die_info * | |
fba45db2 | 6491 | copy_die (struct die_info *old_die) |
c906108c SS |
6492 | { |
6493 | struct die_info *new_die; | |
6494 | int i, num_attrs; | |
6495 | ||
6496 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
6497 | memset (new_die, 0, sizeof (struct die_info)); | |
6498 | ||
6499 | new_die->tag = old_die->tag; | |
6500 | new_die->has_children = old_die->has_children; | |
6501 | new_die->abbrev = old_die->abbrev; | |
6502 | new_die->offset = old_die->offset; | |
6503 | new_die->type = NULL; | |
6504 | ||
6505 | num_attrs = old_die->num_attrs; | |
6506 | new_die->num_attrs = num_attrs; | |
6507 | new_die->attrs = (struct attribute *) | |
6508 | xmalloc (num_attrs * sizeof (struct attribute)); | |
6509 | ||
6510 | for (i = 0; i < old_die->num_attrs; ++i) | |
6511 | { | |
6512 | new_die->attrs[i].name = old_die->attrs[i].name; | |
6513 | new_die->attrs[i].form = old_die->attrs[i].form; | |
6514 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
6515 | } | |
6516 | ||
6517 | new_die->next = NULL; | |
6518 | return new_die; | |
6519 | } | |
6520 | #endif | |
6521 | ||
6522 | /* Return sibling of die, NULL if no sibling. */ | |
6523 | ||
f9aca02d | 6524 | static struct die_info * |
fba45db2 | 6525 | sibling_die (struct die_info *die) |
c906108c | 6526 | { |
639d11d3 | 6527 | return die->sibling; |
c906108c SS |
6528 | } |
6529 | ||
6530 | /* Get linkage name of a die, return NULL if not found. */ | |
6531 | ||
6532 | static char * | |
e142c38c | 6533 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6534 | { |
6535 | struct attribute *attr; | |
6536 | ||
e142c38c | 6537 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
6538 | if (attr && DW_STRING (attr)) |
6539 | return DW_STRING (attr); | |
e142c38c | 6540 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
6541 | if (attr && DW_STRING (attr)) |
6542 | return DW_STRING (attr); | |
6543 | return NULL; | |
6544 | } | |
6545 | ||
9219021c DC |
6546 | /* Get name of a die, return NULL if not found. */ |
6547 | ||
6548 | static char * | |
e142c38c | 6549 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6550 | { |
6551 | struct attribute *attr; | |
6552 | ||
e142c38c | 6553 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
6554 | if (attr && DW_STRING (attr)) |
6555 | return DW_STRING (attr); | |
6556 | return NULL; | |
6557 | } | |
6558 | ||
6559 | /* Return the die that this die in an extension of, or NULL if there | |
6560 | is none. */ | |
6561 | ||
6562 | static struct die_info * | |
e142c38c | 6563 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6564 | { |
6565 | struct attribute *attr; | |
6566 | struct die_info *extension_die; | |
6567 | unsigned int ref; | |
6568 | ||
e142c38c | 6569 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
6570 | if (attr == NULL) |
6571 | return NULL; | |
6572 | ||
e142c38c | 6573 | ref = dwarf2_get_ref_die_offset (attr, cu); |
9219021c DC |
6574 | extension_die = follow_die_ref (ref); |
6575 | if (!extension_die) | |
6576 | { | |
6577 | error ("Dwarf Error: Cannot find referent at offset %d.", ref); | |
6578 | } | |
6579 | ||
6580 | return extension_die; | |
6581 | } | |
6582 | ||
c906108c SS |
6583 | /* Convert a DIE tag into its string name. */ |
6584 | ||
6585 | static char * | |
aa1ee363 | 6586 | dwarf_tag_name (unsigned tag) |
c906108c SS |
6587 | { |
6588 | switch (tag) | |
6589 | { | |
6590 | case DW_TAG_padding: | |
6591 | return "DW_TAG_padding"; | |
6592 | case DW_TAG_array_type: | |
6593 | return "DW_TAG_array_type"; | |
6594 | case DW_TAG_class_type: | |
6595 | return "DW_TAG_class_type"; | |
6596 | case DW_TAG_entry_point: | |
6597 | return "DW_TAG_entry_point"; | |
6598 | case DW_TAG_enumeration_type: | |
6599 | return "DW_TAG_enumeration_type"; | |
6600 | case DW_TAG_formal_parameter: | |
6601 | return "DW_TAG_formal_parameter"; | |
6602 | case DW_TAG_imported_declaration: | |
6603 | return "DW_TAG_imported_declaration"; | |
6604 | case DW_TAG_label: | |
6605 | return "DW_TAG_label"; | |
6606 | case DW_TAG_lexical_block: | |
6607 | return "DW_TAG_lexical_block"; | |
6608 | case DW_TAG_member: | |
6609 | return "DW_TAG_member"; | |
6610 | case DW_TAG_pointer_type: | |
6611 | return "DW_TAG_pointer_type"; | |
6612 | case DW_TAG_reference_type: | |
6613 | return "DW_TAG_reference_type"; | |
6614 | case DW_TAG_compile_unit: | |
6615 | return "DW_TAG_compile_unit"; | |
6616 | case DW_TAG_string_type: | |
6617 | return "DW_TAG_string_type"; | |
6618 | case DW_TAG_structure_type: | |
6619 | return "DW_TAG_structure_type"; | |
6620 | case DW_TAG_subroutine_type: | |
6621 | return "DW_TAG_subroutine_type"; | |
6622 | case DW_TAG_typedef: | |
6623 | return "DW_TAG_typedef"; | |
6624 | case DW_TAG_union_type: | |
6625 | return "DW_TAG_union_type"; | |
6626 | case DW_TAG_unspecified_parameters: | |
6627 | return "DW_TAG_unspecified_parameters"; | |
6628 | case DW_TAG_variant: | |
6629 | return "DW_TAG_variant"; | |
6630 | case DW_TAG_common_block: | |
6631 | return "DW_TAG_common_block"; | |
6632 | case DW_TAG_common_inclusion: | |
6633 | return "DW_TAG_common_inclusion"; | |
6634 | case DW_TAG_inheritance: | |
6635 | return "DW_TAG_inheritance"; | |
6636 | case DW_TAG_inlined_subroutine: | |
6637 | return "DW_TAG_inlined_subroutine"; | |
6638 | case DW_TAG_module: | |
6639 | return "DW_TAG_module"; | |
6640 | case DW_TAG_ptr_to_member_type: | |
6641 | return "DW_TAG_ptr_to_member_type"; | |
6642 | case DW_TAG_set_type: | |
6643 | return "DW_TAG_set_type"; | |
6644 | case DW_TAG_subrange_type: | |
6645 | return "DW_TAG_subrange_type"; | |
6646 | case DW_TAG_with_stmt: | |
6647 | return "DW_TAG_with_stmt"; | |
6648 | case DW_TAG_access_declaration: | |
6649 | return "DW_TAG_access_declaration"; | |
6650 | case DW_TAG_base_type: | |
6651 | return "DW_TAG_base_type"; | |
6652 | case DW_TAG_catch_block: | |
6653 | return "DW_TAG_catch_block"; | |
6654 | case DW_TAG_const_type: | |
6655 | return "DW_TAG_const_type"; | |
6656 | case DW_TAG_constant: | |
6657 | return "DW_TAG_constant"; | |
6658 | case DW_TAG_enumerator: | |
6659 | return "DW_TAG_enumerator"; | |
6660 | case DW_TAG_file_type: | |
6661 | return "DW_TAG_file_type"; | |
6662 | case DW_TAG_friend: | |
6663 | return "DW_TAG_friend"; | |
6664 | case DW_TAG_namelist: | |
6665 | return "DW_TAG_namelist"; | |
6666 | case DW_TAG_namelist_item: | |
6667 | return "DW_TAG_namelist_item"; | |
6668 | case DW_TAG_packed_type: | |
6669 | return "DW_TAG_packed_type"; | |
6670 | case DW_TAG_subprogram: | |
6671 | return "DW_TAG_subprogram"; | |
6672 | case DW_TAG_template_type_param: | |
6673 | return "DW_TAG_template_type_param"; | |
6674 | case DW_TAG_template_value_param: | |
6675 | return "DW_TAG_template_value_param"; | |
6676 | case DW_TAG_thrown_type: | |
6677 | return "DW_TAG_thrown_type"; | |
6678 | case DW_TAG_try_block: | |
6679 | return "DW_TAG_try_block"; | |
6680 | case DW_TAG_variant_part: | |
6681 | return "DW_TAG_variant_part"; | |
6682 | case DW_TAG_variable: | |
6683 | return "DW_TAG_variable"; | |
6684 | case DW_TAG_volatile_type: | |
6685 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
6686 | case DW_TAG_dwarf_procedure: |
6687 | return "DW_TAG_dwarf_procedure"; | |
6688 | case DW_TAG_restrict_type: | |
6689 | return "DW_TAG_restrict_type"; | |
6690 | case DW_TAG_interface_type: | |
6691 | return "DW_TAG_interface_type"; | |
6692 | case DW_TAG_namespace: | |
6693 | return "DW_TAG_namespace"; | |
6694 | case DW_TAG_imported_module: | |
6695 | return "DW_TAG_imported_module"; | |
6696 | case DW_TAG_unspecified_type: | |
6697 | return "DW_TAG_unspecified_type"; | |
6698 | case DW_TAG_partial_unit: | |
6699 | return "DW_TAG_partial_unit"; | |
6700 | case DW_TAG_imported_unit: | |
6701 | return "DW_TAG_imported_unit"; | |
c906108c SS |
6702 | case DW_TAG_MIPS_loop: |
6703 | return "DW_TAG_MIPS_loop"; | |
6704 | case DW_TAG_format_label: | |
6705 | return "DW_TAG_format_label"; | |
6706 | case DW_TAG_function_template: | |
6707 | return "DW_TAG_function_template"; | |
6708 | case DW_TAG_class_template: | |
6709 | return "DW_TAG_class_template"; | |
6710 | default: | |
6711 | return "DW_TAG_<unknown>"; | |
6712 | } | |
6713 | } | |
6714 | ||
6715 | /* Convert a DWARF attribute code into its string name. */ | |
6716 | ||
6717 | static char * | |
aa1ee363 | 6718 | dwarf_attr_name (unsigned attr) |
c906108c SS |
6719 | { |
6720 | switch (attr) | |
6721 | { | |
6722 | case DW_AT_sibling: | |
6723 | return "DW_AT_sibling"; | |
6724 | case DW_AT_location: | |
6725 | return "DW_AT_location"; | |
6726 | case DW_AT_name: | |
6727 | return "DW_AT_name"; | |
6728 | case DW_AT_ordering: | |
6729 | return "DW_AT_ordering"; | |
6730 | case DW_AT_subscr_data: | |
6731 | return "DW_AT_subscr_data"; | |
6732 | case DW_AT_byte_size: | |
6733 | return "DW_AT_byte_size"; | |
6734 | case DW_AT_bit_offset: | |
6735 | return "DW_AT_bit_offset"; | |
6736 | case DW_AT_bit_size: | |
6737 | return "DW_AT_bit_size"; | |
6738 | case DW_AT_element_list: | |
6739 | return "DW_AT_element_list"; | |
6740 | case DW_AT_stmt_list: | |
6741 | return "DW_AT_stmt_list"; | |
6742 | case DW_AT_low_pc: | |
6743 | return "DW_AT_low_pc"; | |
6744 | case DW_AT_high_pc: | |
6745 | return "DW_AT_high_pc"; | |
6746 | case DW_AT_language: | |
6747 | return "DW_AT_language"; | |
6748 | case DW_AT_member: | |
6749 | return "DW_AT_member"; | |
6750 | case DW_AT_discr: | |
6751 | return "DW_AT_discr"; | |
6752 | case DW_AT_discr_value: | |
6753 | return "DW_AT_discr_value"; | |
6754 | case DW_AT_visibility: | |
6755 | return "DW_AT_visibility"; | |
6756 | case DW_AT_import: | |
6757 | return "DW_AT_import"; | |
6758 | case DW_AT_string_length: | |
6759 | return "DW_AT_string_length"; | |
6760 | case DW_AT_common_reference: | |
6761 | return "DW_AT_common_reference"; | |
6762 | case DW_AT_comp_dir: | |
6763 | return "DW_AT_comp_dir"; | |
6764 | case DW_AT_const_value: | |
6765 | return "DW_AT_const_value"; | |
6766 | case DW_AT_containing_type: | |
6767 | return "DW_AT_containing_type"; | |
6768 | case DW_AT_default_value: | |
6769 | return "DW_AT_default_value"; | |
6770 | case DW_AT_inline: | |
6771 | return "DW_AT_inline"; | |
6772 | case DW_AT_is_optional: | |
6773 | return "DW_AT_is_optional"; | |
6774 | case DW_AT_lower_bound: | |
6775 | return "DW_AT_lower_bound"; | |
6776 | case DW_AT_producer: | |
6777 | return "DW_AT_producer"; | |
6778 | case DW_AT_prototyped: | |
6779 | return "DW_AT_prototyped"; | |
6780 | case DW_AT_return_addr: | |
6781 | return "DW_AT_return_addr"; | |
6782 | case DW_AT_start_scope: | |
6783 | return "DW_AT_start_scope"; | |
6784 | case DW_AT_stride_size: | |
6785 | return "DW_AT_stride_size"; | |
6786 | case DW_AT_upper_bound: | |
6787 | return "DW_AT_upper_bound"; | |
6788 | case DW_AT_abstract_origin: | |
6789 | return "DW_AT_abstract_origin"; | |
6790 | case DW_AT_accessibility: | |
6791 | return "DW_AT_accessibility"; | |
6792 | case DW_AT_address_class: | |
6793 | return "DW_AT_address_class"; | |
6794 | case DW_AT_artificial: | |
6795 | return "DW_AT_artificial"; | |
6796 | case DW_AT_base_types: | |
6797 | return "DW_AT_base_types"; | |
6798 | case DW_AT_calling_convention: | |
6799 | return "DW_AT_calling_convention"; | |
6800 | case DW_AT_count: | |
6801 | return "DW_AT_count"; | |
6802 | case DW_AT_data_member_location: | |
6803 | return "DW_AT_data_member_location"; | |
6804 | case DW_AT_decl_column: | |
6805 | return "DW_AT_decl_column"; | |
6806 | case DW_AT_decl_file: | |
6807 | return "DW_AT_decl_file"; | |
6808 | case DW_AT_decl_line: | |
6809 | return "DW_AT_decl_line"; | |
6810 | case DW_AT_declaration: | |
6811 | return "DW_AT_declaration"; | |
6812 | case DW_AT_discr_list: | |
6813 | return "DW_AT_discr_list"; | |
6814 | case DW_AT_encoding: | |
6815 | return "DW_AT_encoding"; | |
6816 | case DW_AT_external: | |
6817 | return "DW_AT_external"; | |
6818 | case DW_AT_frame_base: | |
6819 | return "DW_AT_frame_base"; | |
6820 | case DW_AT_friend: | |
6821 | return "DW_AT_friend"; | |
6822 | case DW_AT_identifier_case: | |
6823 | return "DW_AT_identifier_case"; | |
6824 | case DW_AT_macro_info: | |
6825 | return "DW_AT_macro_info"; | |
6826 | case DW_AT_namelist_items: | |
6827 | return "DW_AT_namelist_items"; | |
6828 | case DW_AT_priority: | |
6829 | return "DW_AT_priority"; | |
6830 | case DW_AT_segment: | |
6831 | return "DW_AT_segment"; | |
6832 | case DW_AT_specification: | |
6833 | return "DW_AT_specification"; | |
6834 | case DW_AT_static_link: | |
6835 | return "DW_AT_static_link"; | |
6836 | case DW_AT_type: | |
6837 | return "DW_AT_type"; | |
6838 | case DW_AT_use_location: | |
6839 | return "DW_AT_use_location"; | |
6840 | case DW_AT_variable_parameter: | |
6841 | return "DW_AT_variable_parameter"; | |
6842 | case DW_AT_virtuality: | |
6843 | return "DW_AT_virtuality"; | |
6844 | case DW_AT_vtable_elem_location: | |
6845 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
6846 | case DW_AT_allocated: |
6847 | return "DW_AT_allocated"; | |
6848 | case DW_AT_associated: | |
6849 | return "DW_AT_associated"; | |
6850 | case DW_AT_data_location: | |
6851 | return "DW_AT_data_location"; | |
6852 | case DW_AT_stride: | |
6853 | return "DW_AT_stride"; | |
6854 | case DW_AT_entry_pc: | |
6855 | return "DW_AT_entry_pc"; | |
6856 | case DW_AT_use_UTF8: | |
6857 | return "DW_AT_use_UTF8"; | |
6858 | case DW_AT_extension: | |
6859 | return "DW_AT_extension"; | |
6860 | case DW_AT_ranges: | |
6861 | return "DW_AT_ranges"; | |
6862 | case DW_AT_trampoline: | |
6863 | return "DW_AT_trampoline"; | |
6864 | case DW_AT_call_column: | |
6865 | return "DW_AT_call_column"; | |
6866 | case DW_AT_call_file: | |
6867 | return "DW_AT_call_file"; | |
6868 | case DW_AT_call_line: | |
6869 | return "DW_AT_call_line"; | |
c906108c SS |
6870 | #ifdef MIPS |
6871 | case DW_AT_MIPS_fde: | |
6872 | return "DW_AT_MIPS_fde"; | |
6873 | case DW_AT_MIPS_loop_begin: | |
6874 | return "DW_AT_MIPS_loop_begin"; | |
6875 | case DW_AT_MIPS_tail_loop_begin: | |
6876 | return "DW_AT_MIPS_tail_loop_begin"; | |
6877 | case DW_AT_MIPS_epilog_begin: | |
6878 | return "DW_AT_MIPS_epilog_begin"; | |
6879 | case DW_AT_MIPS_loop_unroll_factor: | |
6880 | return "DW_AT_MIPS_loop_unroll_factor"; | |
6881 | case DW_AT_MIPS_software_pipeline_depth: | |
6882 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 6883 | #endif |
c906108c SS |
6884 | case DW_AT_MIPS_linkage_name: |
6885 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
6886 | |
6887 | case DW_AT_sf_names: | |
6888 | return "DW_AT_sf_names"; | |
6889 | case DW_AT_src_info: | |
6890 | return "DW_AT_src_info"; | |
6891 | case DW_AT_mac_info: | |
6892 | return "DW_AT_mac_info"; | |
6893 | case DW_AT_src_coords: | |
6894 | return "DW_AT_src_coords"; | |
6895 | case DW_AT_body_begin: | |
6896 | return "DW_AT_body_begin"; | |
6897 | case DW_AT_body_end: | |
6898 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
6899 | case DW_AT_GNU_vector: |
6900 | return "DW_AT_GNU_vector"; | |
c906108c SS |
6901 | default: |
6902 | return "DW_AT_<unknown>"; | |
6903 | } | |
6904 | } | |
6905 | ||
6906 | /* Convert a DWARF value form code into its string name. */ | |
6907 | ||
6908 | static char * | |
aa1ee363 | 6909 | dwarf_form_name (unsigned form) |
c906108c SS |
6910 | { |
6911 | switch (form) | |
6912 | { | |
6913 | case DW_FORM_addr: | |
6914 | return "DW_FORM_addr"; | |
6915 | case DW_FORM_block2: | |
6916 | return "DW_FORM_block2"; | |
6917 | case DW_FORM_block4: | |
6918 | return "DW_FORM_block4"; | |
6919 | case DW_FORM_data2: | |
6920 | return "DW_FORM_data2"; | |
6921 | case DW_FORM_data4: | |
6922 | return "DW_FORM_data4"; | |
6923 | case DW_FORM_data8: | |
6924 | return "DW_FORM_data8"; | |
6925 | case DW_FORM_string: | |
6926 | return "DW_FORM_string"; | |
6927 | case DW_FORM_block: | |
6928 | return "DW_FORM_block"; | |
6929 | case DW_FORM_block1: | |
6930 | return "DW_FORM_block1"; | |
6931 | case DW_FORM_data1: | |
6932 | return "DW_FORM_data1"; | |
6933 | case DW_FORM_flag: | |
6934 | return "DW_FORM_flag"; | |
6935 | case DW_FORM_sdata: | |
6936 | return "DW_FORM_sdata"; | |
6937 | case DW_FORM_strp: | |
6938 | return "DW_FORM_strp"; | |
6939 | case DW_FORM_udata: | |
6940 | return "DW_FORM_udata"; | |
6941 | case DW_FORM_ref_addr: | |
6942 | return "DW_FORM_ref_addr"; | |
6943 | case DW_FORM_ref1: | |
6944 | return "DW_FORM_ref1"; | |
6945 | case DW_FORM_ref2: | |
6946 | return "DW_FORM_ref2"; | |
6947 | case DW_FORM_ref4: | |
6948 | return "DW_FORM_ref4"; | |
6949 | case DW_FORM_ref8: | |
6950 | return "DW_FORM_ref8"; | |
6951 | case DW_FORM_ref_udata: | |
6952 | return "DW_FORM_ref_udata"; | |
6953 | case DW_FORM_indirect: | |
6954 | return "DW_FORM_indirect"; | |
6955 | default: | |
6956 | return "DW_FORM_<unknown>"; | |
6957 | } | |
6958 | } | |
6959 | ||
6960 | /* Convert a DWARF stack opcode into its string name. */ | |
6961 | ||
6962 | static char * | |
aa1ee363 | 6963 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
6964 | { |
6965 | switch (op) | |
6966 | { | |
6967 | case DW_OP_addr: | |
6968 | return "DW_OP_addr"; | |
6969 | case DW_OP_deref: | |
6970 | return "DW_OP_deref"; | |
6971 | case DW_OP_const1u: | |
6972 | return "DW_OP_const1u"; | |
6973 | case DW_OP_const1s: | |
6974 | return "DW_OP_const1s"; | |
6975 | case DW_OP_const2u: | |
6976 | return "DW_OP_const2u"; | |
6977 | case DW_OP_const2s: | |
6978 | return "DW_OP_const2s"; | |
6979 | case DW_OP_const4u: | |
6980 | return "DW_OP_const4u"; | |
6981 | case DW_OP_const4s: | |
6982 | return "DW_OP_const4s"; | |
6983 | case DW_OP_const8u: | |
6984 | return "DW_OP_const8u"; | |
6985 | case DW_OP_const8s: | |
6986 | return "DW_OP_const8s"; | |
6987 | case DW_OP_constu: | |
6988 | return "DW_OP_constu"; | |
6989 | case DW_OP_consts: | |
6990 | return "DW_OP_consts"; | |
6991 | case DW_OP_dup: | |
6992 | return "DW_OP_dup"; | |
6993 | case DW_OP_drop: | |
6994 | return "DW_OP_drop"; | |
6995 | case DW_OP_over: | |
6996 | return "DW_OP_over"; | |
6997 | case DW_OP_pick: | |
6998 | return "DW_OP_pick"; | |
6999 | case DW_OP_swap: | |
7000 | return "DW_OP_swap"; | |
7001 | case DW_OP_rot: | |
7002 | return "DW_OP_rot"; | |
7003 | case DW_OP_xderef: | |
7004 | return "DW_OP_xderef"; | |
7005 | case DW_OP_abs: | |
7006 | return "DW_OP_abs"; | |
7007 | case DW_OP_and: | |
7008 | return "DW_OP_and"; | |
7009 | case DW_OP_div: | |
7010 | return "DW_OP_div"; | |
7011 | case DW_OP_minus: | |
7012 | return "DW_OP_minus"; | |
7013 | case DW_OP_mod: | |
7014 | return "DW_OP_mod"; | |
7015 | case DW_OP_mul: | |
7016 | return "DW_OP_mul"; | |
7017 | case DW_OP_neg: | |
7018 | return "DW_OP_neg"; | |
7019 | case DW_OP_not: | |
7020 | return "DW_OP_not"; | |
7021 | case DW_OP_or: | |
7022 | return "DW_OP_or"; | |
7023 | case DW_OP_plus: | |
7024 | return "DW_OP_plus"; | |
7025 | case DW_OP_plus_uconst: | |
7026 | return "DW_OP_plus_uconst"; | |
7027 | case DW_OP_shl: | |
7028 | return "DW_OP_shl"; | |
7029 | case DW_OP_shr: | |
7030 | return "DW_OP_shr"; | |
7031 | case DW_OP_shra: | |
7032 | return "DW_OP_shra"; | |
7033 | case DW_OP_xor: | |
7034 | return "DW_OP_xor"; | |
7035 | case DW_OP_bra: | |
7036 | return "DW_OP_bra"; | |
7037 | case DW_OP_eq: | |
7038 | return "DW_OP_eq"; | |
7039 | case DW_OP_ge: | |
7040 | return "DW_OP_ge"; | |
7041 | case DW_OP_gt: | |
7042 | return "DW_OP_gt"; | |
7043 | case DW_OP_le: | |
7044 | return "DW_OP_le"; | |
7045 | case DW_OP_lt: | |
7046 | return "DW_OP_lt"; | |
7047 | case DW_OP_ne: | |
7048 | return "DW_OP_ne"; | |
7049 | case DW_OP_skip: | |
7050 | return "DW_OP_skip"; | |
7051 | case DW_OP_lit0: | |
7052 | return "DW_OP_lit0"; | |
7053 | case DW_OP_lit1: | |
7054 | return "DW_OP_lit1"; | |
7055 | case DW_OP_lit2: | |
7056 | return "DW_OP_lit2"; | |
7057 | case DW_OP_lit3: | |
7058 | return "DW_OP_lit3"; | |
7059 | case DW_OP_lit4: | |
7060 | return "DW_OP_lit4"; | |
7061 | case DW_OP_lit5: | |
7062 | return "DW_OP_lit5"; | |
7063 | case DW_OP_lit6: | |
7064 | return "DW_OP_lit6"; | |
7065 | case DW_OP_lit7: | |
7066 | return "DW_OP_lit7"; | |
7067 | case DW_OP_lit8: | |
7068 | return "DW_OP_lit8"; | |
7069 | case DW_OP_lit9: | |
7070 | return "DW_OP_lit9"; | |
7071 | case DW_OP_lit10: | |
7072 | return "DW_OP_lit10"; | |
7073 | case DW_OP_lit11: | |
7074 | return "DW_OP_lit11"; | |
7075 | case DW_OP_lit12: | |
7076 | return "DW_OP_lit12"; | |
7077 | case DW_OP_lit13: | |
7078 | return "DW_OP_lit13"; | |
7079 | case DW_OP_lit14: | |
7080 | return "DW_OP_lit14"; | |
7081 | case DW_OP_lit15: | |
7082 | return "DW_OP_lit15"; | |
7083 | case DW_OP_lit16: | |
7084 | return "DW_OP_lit16"; | |
7085 | case DW_OP_lit17: | |
7086 | return "DW_OP_lit17"; | |
7087 | case DW_OP_lit18: | |
7088 | return "DW_OP_lit18"; | |
7089 | case DW_OP_lit19: | |
7090 | return "DW_OP_lit19"; | |
7091 | case DW_OP_lit20: | |
7092 | return "DW_OP_lit20"; | |
7093 | case DW_OP_lit21: | |
7094 | return "DW_OP_lit21"; | |
7095 | case DW_OP_lit22: | |
7096 | return "DW_OP_lit22"; | |
7097 | case DW_OP_lit23: | |
7098 | return "DW_OP_lit23"; | |
7099 | case DW_OP_lit24: | |
7100 | return "DW_OP_lit24"; | |
7101 | case DW_OP_lit25: | |
7102 | return "DW_OP_lit25"; | |
7103 | case DW_OP_lit26: | |
7104 | return "DW_OP_lit26"; | |
7105 | case DW_OP_lit27: | |
7106 | return "DW_OP_lit27"; | |
7107 | case DW_OP_lit28: | |
7108 | return "DW_OP_lit28"; | |
7109 | case DW_OP_lit29: | |
7110 | return "DW_OP_lit29"; | |
7111 | case DW_OP_lit30: | |
7112 | return "DW_OP_lit30"; | |
7113 | case DW_OP_lit31: | |
7114 | return "DW_OP_lit31"; | |
7115 | case DW_OP_reg0: | |
7116 | return "DW_OP_reg0"; | |
7117 | case DW_OP_reg1: | |
7118 | return "DW_OP_reg1"; | |
7119 | case DW_OP_reg2: | |
7120 | return "DW_OP_reg2"; | |
7121 | case DW_OP_reg3: | |
7122 | return "DW_OP_reg3"; | |
7123 | case DW_OP_reg4: | |
7124 | return "DW_OP_reg4"; | |
7125 | case DW_OP_reg5: | |
7126 | return "DW_OP_reg5"; | |
7127 | case DW_OP_reg6: | |
7128 | return "DW_OP_reg6"; | |
7129 | case DW_OP_reg7: | |
7130 | return "DW_OP_reg7"; | |
7131 | case DW_OP_reg8: | |
7132 | return "DW_OP_reg8"; | |
7133 | case DW_OP_reg9: | |
7134 | return "DW_OP_reg9"; | |
7135 | case DW_OP_reg10: | |
7136 | return "DW_OP_reg10"; | |
7137 | case DW_OP_reg11: | |
7138 | return "DW_OP_reg11"; | |
7139 | case DW_OP_reg12: | |
7140 | return "DW_OP_reg12"; | |
7141 | case DW_OP_reg13: | |
7142 | return "DW_OP_reg13"; | |
7143 | case DW_OP_reg14: | |
7144 | return "DW_OP_reg14"; | |
7145 | case DW_OP_reg15: | |
7146 | return "DW_OP_reg15"; | |
7147 | case DW_OP_reg16: | |
7148 | return "DW_OP_reg16"; | |
7149 | case DW_OP_reg17: | |
7150 | return "DW_OP_reg17"; | |
7151 | case DW_OP_reg18: | |
7152 | return "DW_OP_reg18"; | |
7153 | case DW_OP_reg19: | |
7154 | return "DW_OP_reg19"; | |
7155 | case DW_OP_reg20: | |
7156 | return "DW_OP_reg20"; | |
7157 | case DW_OP_reg21: | |
7158 | return "DW_OP_reg21"; | |
7159 | case DW_OP_reg22: | |
7160 | return "DW_OP_reg22"; | |
7161 | case DW_OP_reg23: | |
7162 | return "DW_OP_reg23"; | |
7163 | case DW_OP_reg24: | |
7164 | return "DW_OP_reg24"; | |
7165 | case DW_OP_reg25: | |
7166 | return "DW_OP_reg25"; | |
7167 | case DW_OP_reg26: | |
7168 | return "DW_OP_reg26"; | |
7169 | case DW_OP_reg27: | |
7170 | return "DW_OP_reg27"; | |
7171 | case DW_OP_reg28: | |
7172 | return "DW_OP_reg28"; | |
7173 | case DW_OP_reg29: | |
7174 | return "DW_OP_reg29"; | |
7175 | case DW_OP_reg30: | |
7176 | return "DW_OP_reg30"; | |
7177 | case DW_OP_reg31: | |
7178 | return "DW_OP_reg31"; | |
7179 | case DW_OP_breg0: | |
7180 | return "DW_OP_breg0"; | |
7181 | case DW_OP_breg1: | |
7182 | return "DW_OP_breg1"; | |
7183 | case DW_OP_breg2: | |
7184 | return "DW_OP_breg2"; | |
7185 | case DW_OP_breg3: | |
7186 | return "DW_OP_breg3"; | |
7187 | case DW_OP_breg4: | |
7188 | return "DW_OP_breg4"; | |
7189 | case DW_OP_breg5: | |
7190 | return "DW_OP_breg5"; | |
7191 | case DW_OP_breg6: | |
7192 | return "DW_OP_breg6"; | |
7193 | case DW_OP_breg7: | |
7194 | return "DW_OP_breg7"; | |
7195 | case DW_OP_breg8: | |
7196 | return "DW_OP_breg8"; | |
7197 | case DW_OP_breg9: | |
7198 | return "DW_OP_breg9"; | |
7199 | case DW_OP_breg10: | |
7200 | return "DW_OP_breg10"; | |
7201 | case DW_OP_breg11: | |
7202 | return "DW_OP_breg11"; | |
7203 | case DW_OP_breg12: | |
7204 | return "DW_OP_breg12"; | |
7205 | case DW_OP_breg13: | |
7206 | return "DW_OP_breg13"; | |
7207 | case DW_OP_breg14: | |
7208 | return "DW_OP_breg14"; | |
7209 | case DW_OP_breg15: | |
7210 | return "DW_OP_breg15"; | |
7211 | case DW_OP_breg16: | |
7212 | return "DW_OP_breg16"; | |
7213 | case DW_OP_breg17: | |
7214 | return "DW_OP_breg17"; | |
7215 | case DW_OP_breg18: | |
7216 | return "DW_OP_breg18"; | |
7217 | case DW_OP_breg19: | |
7218 | return "DW_OP_breg19"; | |
7219 | case DW_OP_breg20: | |
7220 | return "DW_OP_breg20"; | |
7221 | case DW_OP_breg21: | |
7222 | return "DW_OP_breg21"; | |
7223 | case DW_OP_breg22: | |
7224 | return "DW_OP_breg22"; | |
7225 | case DW_OP_breg23: | |
7226 | return "DW_OP_breg23"; | |
7227 | case DW_OP_breg24: | |
7228 | return "DW_OP_breg24"; | |
7229 | case DW_OP_breg25: | |
7230 | return "DW_OP_breg25"; | |
7231 | case DW_OP_breg26: | |
7232 | return "DW_OP_breg26"; | |
7233 | case DW_OP_breg27: | |
7234 | return "DW_OP_breg27"; | |
7235 | case DW_OP_breg28: | |
7236 | return "DW_OP_breg28"; | |
7237 | case DW_OP_breg29: | |
7238 | return "DW_OP_breg29"; | |
7239 | case DW_OP_breg30: | |
7240 | return "DW_OP_breg30"; | |
7241 | case DW_OP_breg31: | |
7242 | return "DW_OP_breg31"; | |
7243 | case DW_OP_regx: | |
7244 | return "DW_OP_regx"; | |
7245 | case DW_OP_fbreg: | |
7246 | return "DW_OP_fbreg"; | |
7247 | case DW_OP_bregx: | |
7248 | return "DW_OP_bregx"; | |
7249 | case DW_OP_piece: | |
7250 | return "DW_OP_piece"; | |
7251 | case DW_OP_deref_size: | |
7252 | return "DW_OP_deref_size"; | |
7253 | case DW_OP_xderef_size: | |
7254 | return "DW_OP_xderef_size"; | |
7255 | case DW_OP_nop: | |
7256 | return "DW_OP_nop"; | |
ed348acc EZ |
7257 | /* DWARF 3 extensions. */ |
7258 | case DW_OP_push_object_address: | |
7259 | return "DW_OP_push_object_address"; | |
7260 | case DW_OP_call2: | |
7261 | return "DW_OP_call2"; | |
7262 | case DW_OP_call4: | |
7263 | return "DW_OP_call4"; | |
7264 | case DW_OP_call_ref: | |
7265 | return "DW_OP_call_ref"; | |
7266 | /* GNU extensions. */ | |
7267 | case DW_OP_GNU_push_tls_address: | |
7268 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
7269 | default: |
7270 | return "OP_<unknown>"; | |
7271 | } | |
7272 | } | |
7273 | ||
7274 | static char * | |
fba45db2 | 7275 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
7276 | { |
7277 | if (mybool) | |
7278 | return "TRUE"; | |
7279 | else | |
7280 | return "FALSE"; | |
7281 | } | |
7282 | ||
7283 | /* Convert a DWARF type code into its string name. */ | |
7284 | ||
7285 | static char * | |
aa1ee363 | 7286 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
7287 | { |
7288 | switch (enc) | |
7289 | { | |
7290 | case DW_ATE_address: | |
7291 | return "DW_ATE_address"; | |
7292 | case DW_ATE_boolean: | |
7293 | return "DW_ATE_boolean"; | |
7294 | case DW_ATE_complex_float: | |
7295 | return "DW_ATE_complex_float"; | |
7296 | case DW_ATE_float: | |
7297 | return "DW_ATE_float"; | |
7298 | case DW_ATE_signed: | |
7299 | return "DW_ATE_signed"; | |
7300 | case DW_ATE_signed_char: | |
7301 | return "DW_ATE_signed_char"; | |
7302 | case DW_ATE_unsigned: | |
7303 | return "DW_ATE_unsigned"; | |
7304 | case DW_ATE_unsigned_char: | |
7305 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
7306 | case DW_ATE_imaginary_float: |
7307 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
7308 | default: |
7309 | return "DW_ATE_<unknown>"; | |
7310 | } | |
7311 | } | |
7312 | ||
7313 | /* Convert a DWARF call frame info operation to its string name. */ | |
7314 | ||
7315 | #if 0 | |
7316 | static char * | |
aa1ee363 | 7317 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
7318 | { |
7319 | switch (cfi_opc) | |
7320 | { | |
7321 | case DW_CFA_advance_loc: | |
7322 | return "DW_CFA_advance_loc"; | |
7323 | case DW_CFA_offset: | |
7324 | return "DW_CFA_offset"; | |
7325 | case DW_CFA_restore: | |
7326 | return "DW_CFA_restore"; | |
7327 | case DW_CFA_nop: | |
7328 | return "DW_CFA_nop"; | |
7329 | case DW_CFA_set_loc: | |
7330 | return "DW_CFA_set_loc"; | |
7331 | case DW_CFA_advance_loc1: | |
7332 | return "DW_CFA_advance_loc1"; | |
7333 | case DW_CFA_advance_loc2: | |
7334 | return "DW_CFA_advance_loc2"; | |
7335 | case DW_CFA_advance_loc4: | |
7336 | return "DW_CFA_advance_loc4"; | |
7337 | case DW_CFA_offset_extended: | |
7338 | return "DW_CFA_offset_extended"; | |
7339 | case DW_CFA_restore_extended: | |
7340 | return "DW_CFA_restore_extended"; | |
7341 | case DW_CFA_undefined: | |
7342 | return "DW_CFA_undefined"; | |
7343 | case DW_CFA_same_value: | |
7344 | return "DW_CFA_same_value"; | |
7345 | case DW_CFA_register: | |
7346 | return "DW_CFA_register"; | |
7347 | case DW_CFA_remember_state: | |
7348 | return "DW_CFA_remember_state"; | |
7349 | case DW_CFA_restore_state: | |
7350 | return "DW_CFA_restore_state"; | |
7351 | case DW_CFA_def_cfa: | |
7352 | return "DW_CFA_def_cfa"; | |
7353 | case DW_CFA_def_cfa_register: | |
7354 | return "DW_CFA_def_cfa_register"; | |
7355 | case DW_CFA_def_cfa_offset: | |
7356 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
7357 | |
7358 | /* DWARF 3 */ | |
7359 | case DW_CFA_def_cfa_expression: | |
7360 | return "DW_CFA_def_cfa_expression"; | |
7361 | case DW_CFA_expression: | |
7362 | return "DW_CFA_expression"; | |
7363 | case DW_CFA_offset_extended_sf: | |
7364 | return "DW_CFA_offset_extended_sf"; | |
7365 | case DW_CFA_def_cfa_sf: | |
7366 | return "DW_CFA_def_cfa_sf"; | |
7367 | case DW_CFA_def_cfa_offset_sf: | |
7368 | return "DW_CFA_def_cfa_offset_sf"; | |
7369 | ||
c906108c SS |
7370 | /* SGI/MIPS specific */ |
7371 | case DW_CFA_MIPS_advance_loc8: | |
7372 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
7373 | |
7374 | /* GNU extensions */ | |
7375 | case DW_CFA_GNU_window_save: | |
7376 | return "DW_CFA_GNU_window_save"; | |
7377 | case DW_CFA_GNU_args_size: | |
7378 | return "DW_CFA_GNU_args_size"; | |
7379 | case DW_CFA_GNU_negative_offset_extended: | |
7380 | return "DW_CFA_GNU_negative_offset_extended"; | |
7381 | ||
c906108c SS |
7382 | default: |
7383 | return "DW_CFA_<unknown>"; | |
7384 | } | |
7385 | } | |
7386 | #endif | |
7387 | ||
f9aca02d | 7388 | static void |
fba45db2 | 7389 | dump_die (struct die_info *die) |
c906108c SS |
7390 | { |
7391 | unsigned int i; | |
7392 | ||
48cd0caa | 7393 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 7394 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 7395 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 7396 | dwarf_bool_name (die->child != NULL)); |
c906108c | 7397 | |
48cd0caa | 7398 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
7399 | for (i = 0; i < die->num_attrs; ++i) |
7400 | { | |
48cd0caa | 7401 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
7402 | dwarf_attr_name (die->attrs[i].name), |
7403 | dwarf_form_name (die->attrs[i].form)); | |
7404 | switch (die->attrs[i].form) | |
7405 | { | |
7406 | case DW_FORM_ref_addr: | |
7407 | case DW_FORM_addr: | |
48cd0caa | 7408 | fprintf_unfiltered (gdb_stderr, "address: "); |
c906108c SS |
7409 | print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
7410 | break; | |
7411 | case DW_FORM_block2: | |
7412 | case DW_FORM_block4: | |
7413 | case DW_FORM_block: | |
7414 | case DW_FORM_block1: | |
48cd0caa | 7415 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c SS |
7416 | break; |
7417 | case DW_FORM_data1: | |
7418 | case DW_FORM_data2: | |
7419 | case DW_FORM_data4: | |
ce5d95e1 | 7420 | case DW_FORM_data8: |
c906108c SS |
7421 | case DW_FORM_ref1: |
7422 | case DW_FORM_ref2: | |
7423 | case DW_FORM_ref4: | |
7424 | case DW_FORM_udata: | |
7425 | case DW_FORM_sdata: | |
48cd0caa | 7426 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
7427 | break; |
7428 | case DW_FORM_string: | |
4bdf3d34 | 7429 | case DW_FORM_strp: |
48cd0caa | 7430 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 7431 | DW_STRING (&die->attrs[i]) |
c5aa993b | 7432 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
7433 | break; |
7434 | case DW_FORM_flag: | |
7435 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 7436 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 7437 | else |
48cd0caa | 7438 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 7439 | break; |
a8329558 KW |
7440 | case DW_FORM_indirect: |
7441 | /* the reader will have reduced the indirect form to | |
7442 | the "base form" so this form should not occur */ | |
48cd0caa | 7443 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 7444 | break; |
c906108c | 7445 | default: |
48cd0caa | 7446 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 7447 | die->attrs[i].form); |
c906108c | 7448 | } |
48cd0caa | 7449 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
7450 | } |
7451 | } | |
7452 | ||
f9aca02d | 7453 | static void |
fba45db2 | 7454 | dump_die_list (struct die_info *die) |
c906108c SS |
7455 | { |
7456 | while (die) | |
7457 | { | |
7458 | dump_die (die); | |
639d11d3 DC |
7459 | if (die->child != NULL) |
7460 | dump_die_list (die->child); | |
7461 | if (die->sibling != NULL) | |
7462 | dump_die_list (die->sibling); | |
c906108c SS |
7463 | } |
7464 | } | |
7465 | ||
f9aca02d | 7466 | static void |
fba45db2 | 7467 | store_in_ref_table (unsigned int offset, struct die_info *die) |
c906108c SS |
7468 | { |
7469 | int h; | |
7470 | struct die_info *old; | |
7471 | ||
7472 | h = (offset % REF_HASH_SIZE); | |
7473 | old = die_ref_table[h]; | |
7474 | die->next_ref = old; | |
7475 | die_ref_table[h] = die; | |
7476 | } | |
7477 | ||
7478 | ||
7479 | static void | |
fba45db2 | 7480 | dwarf2_empty_hash_tables (void) |
c906108c SS |
7481 | { |
7482 | memset (die_ref_table, 0, sizeof (die_ref_table)); | |
7483 | } | |
7484 | ||
7485 | static unsigned int | |
e142c38c | 7486 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
7487 | { |
7488 | unsigned int result = 0; | |
7489 | ||
7490 | switch (attr->form) | |
7491 | { | |
7492 | case DW_FORM_ref_addr: | |
7493 | result = DW_ADDR (attr); | |
7494 | break; | |
7495 | case DW_FORM_ref1: | |
7496 | case DW_FORM_ref2: | |
7497 | case DW_FORM_ref4: | |
613e1657 | 7498 | case DW_FORM_ref8: |
c906108c | 7499 | case DW_FORM_ref_udata: |
e142c38c | 7500 | result = cu->header.offset + DW_UNSND (attr); |
c906108c SS |
7501 | break; |
7502 | default: | |
4d3c2250 KB |
7503 | complaint (&symfile_complaints, |
7504 | "unsupported die ref attribute form: '%s'", | |
7505 | dwarf_form_name (attr->form)); | |
c906108c SS |
7506 | } |
7507 | return result; | |
7508 | } | |
7509 | ||
a02abb62 JB |
7510 | /* Return the constant value held by the given attribute. Return -1 |
7511 | if the value held by the attribute is not constant. */ | |
7512 | ||
7513 | static int | |
7514 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
7515 | { | |
7516 | if (attr->form == DW_FORM_sdata) | |
7517 | return DW_SND (attr); | |
7518 | else if (attr->form == DW_FORM_udata | |
7519 | || attr->form == DW_FORM_data1 | |
7520 | || attr->form == DW_FORM_data2 | |
7521 | || attr->form == DW_FORM_data4 | |
7522 | || attr->form == DW_FORM_data8) | |
7523 | return DW_UNSND (attr); | |
7524 | else | |
7525 | { | |
7526 | complaint (&symfile_complaints, "Attribute value is not a constant (%s)", | |
7527 | dwarf_form_name (attr->form)); | |
7528 | return default_value; | |
7529 | } | |
7530 | } | |
7531 | ||
f9aca02d | 7532 | static struct die_info * |
fba45db2 | 7533 | follow_die_ref (unsigned int offset) |
c906108c SS |
7534 | { |
7535 | struct die_info *die; | |
7536 | int h; | |
7537 | ||
7538 | h = (offset % REF_HASH_SIZE); | |
7539 | die = die_ref_table[h]; | |
7540 | while (die) | |
7541 | { | |
7542 | if (die->offset == offset) | |
7543 | { | |
7544 | return die; | |
7545 | } | |
7546 | die = die->next_ref; | |
7547 | } | |
7548 | return NULL; | |
7549 | } | |
7550 | ||
7551 | static struct type * | |
e142c38c DJ |
7552 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
7553 | struct dwarf2_cu *cu) | |
c906108c SS |
7554 | { |
7555 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
7556 | { | |
659b0389 ML |
7557 | error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]", |
7558 | typeid, objfile->name); | |
c906108c SS |
7559 | } |
7560 | ||
7561 | /* Look for this particular type in the fundamental type vector. If | |
7562 | one is not found, create and install one appropriate for the | |
7563 | current language and the current target machine. */ | |
7564 | ||
e142c38c | 7565 | if (cu->ftypes[typeid] == NULL) |
c906108c | 7566 | { |
e142c38c | 7567 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
7568 | } |
7569 | ||
e142c38c | 7570 | return (cu->ftypes[typeid]); |
c906108c SS |
7571 | } |
7572 | ||
7573 | /* Decode simple location descriptions. | |
7574 | Given a pointer to a dwarf block that defines a location, compute | |
7575 | the location and return the value. | |
7576 | ||
4cecd739 DJ |
7577 | NOTE drow/2003-11-18: This function is called in two situations |
7578 | now: for the address of static or global variables (partial symbols | |
7579 | only) and for offsets into structures which are expected to be | |
7580 | (more or less) constant. The partial symbol case should go away, | |
7581 | and only the constant case should remain. That will let this | |
7582 | function complain more accurately. A few special modes are allowed | |
7583 | without complaint for global variables (for instance, global | |
7584 | register values and thread-local values). | |
c906108c SS |
7585 | |
7586 | A location description containing no operations indicates that the | |
4cecd739 | 7587 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
7588 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
7589 | callers will only want a very basic result and this can become a | |
7590 | complaint. | |
c906108c SS |
7591 | |
7592 | When the result is a register number, the global isreg flag is set, | |
7593 | otherwise it is cleared. | |
7594 | ||
c906108c SS |
7595 | Note that stack[0] is unused except as a default error return. |
7596 | Note that stack overflow is not yet handled. */ | |
7597 | ||
7598 | static CORE_ADDR | |
e7c27a73 | 7599 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 7600 | { |
e7c27a73 DJ |
7601 | struct objfile *objfile = cu->objfile; |
7602 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7603 | int i; |
7604 | int size = blk->size; | |
7605 | char *data = blk->data; | |
7606 | CORE_ADDR stack[64]; | |
7607 | int stacki; | |
7608 | unsigned int bytes_read, unsnd; | |
7609 | unsigned char op; | |
7610 | ||
7611 | i = 0; | |
7612 | stacki = 0; | |
7613 | stack[stacki] = 0; | |
7614 | isreg = 0; | |
c906108c SS |
7615 | |
7616 | while (i < size) | |
7617 | { | |
c906108c SS |
7618 | op = data[i++]; |
7619 | switch (op) | |
7620 | { | |
f1bea926 JM |
7621 | case DW_OP_lit0: |
7622 | case DW_OP_lit1: | |
7623 | case DW_OP_lit2: | |
7624 | case DW_OP_lit3: | |
7625 | case DW_OP_lit4: | |
7626 | case DW_OP_lit5: | |
7627 | case DW_OP_lit6: | |
7628 | case DW_OP_lit7: | |
7629 | case DW_OP_lit8: | |
7630 | case DW_OP_lit9: | |
7631 | case DW_OP_lit10: | |
7632 | case DW_OP_lit11: | |
7633 | case DW_OP_lit12: | |
7634 | case DW_OP_lit13: | |
7635 | case DW_OP_lit14: | |
7636 | case DW_OP_lit15: | |
7637 | case DW_OP_lit16: | |
7638 | case DW_OP_lit17: | |
7639 | case DW_OP_lit18: | |
7640 | case DW_OP_lit19: | |
7641 | case DW_OP_lit20: | |
7642 | case DW_OP_lit21: | |
7643 | case DW_OP_lit22: | |
7644 | case DW_OP_lit23: | |
7645 | case DW_OP_lit24: | |
7646 | case DW_OP_lit25: | |
7647 | case DW_OP_lit26: | |
7648 | case DW_OP_lit27: | |
7649 | case DW_OP_lit28: | |
7650 | case DW_OP_lit29: | |
7651 | case DW_OP_lit30: | |
7652 | case DW_OP_lit31: | |
7653 | stack[++stacki] = op - DW_OP_lit0; | |
7654 | break; | |
7655 | ||
c906108c SS |
7656 | case DW_OP_reg0: |
7657 | case DW_OP_reg1: | |
7658 | case DW_OP_reg2: | |
7659 | case DW_OP_reg3: | |
7660 | case DW_OP_reg4: | |
7661 | case DW_OP_reg5: | |
7662 | case DW_OP_reg6: | |
7663 | case DW_OP_reg7: | |
7664 | case DW_OP_reg8: | |
7665 | case DW_OP_reg9: | |
7666 | case DW_OP_reg10: | |
7667 | case DW_OP_reg11: | |
7668 | case DW_OP_reg12: | |
7669 | case DW_OP_reg13: | |
7670 | case DW_OP_reg14: | |
7671 | case DW_OP_reg15: | |
7672 | case DW_OP_reg16: | |
7673 | case DW_OP_reg17: | |
7674 | case DW_OP_reg18: | |
7675 | case DW_OP_reg19: | |
7676 | case DW_OP_reg20: | |
7677 | case DW_OP_reg21: | |
7678 | case DW_OP_reg22: | |
7679 | case DW_OP_reg23: | |
7680 | case DW_OP_reg24: | |
7681 | case DW_OP_reg25: | |
7682 | case DW_OP_reg26: | |
7683 | case DW_OP_reg27: | |
7684 | case DW_OP_reg28: | |
7685 | case DW_OP_reg29: | |
7686 | case DW_OP_reg30: | |
7687 | case DW_OP_reg31: | |
7688 | isreg = 1; | |
7689 | stack[++stacki] = op - DW_OP_reg0; | |
4cecd739 DJ |
7690 | if (i < size) |
7691 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7692 | break; |
7693 | ||
7694 | case DW_OP_regx: | |
7695 | isreg = 1; | |
7696 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7697 | i += bytes_read; | |
c906108c | 7698 | stack[++stacki] = unsnd; |
4cecd739 DJ |
7699 | if (i < size) |
7700 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7701 | break; |
7702 | ||
7703 | case DW_OP_addr: | |
107d2387 | 7704 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 7705 | cu, &bytes_read); |
107d2387 | 7706 | i += bytes_read; |
c906108c SS |
7707 | break; |
7708 | ||
7709 | case DW_OP_const1u: | |
7710 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
7711 | i += 1; | |
7712 | break; | |
7713 | ||
7714 | case DW_OP_const1s: | |
7715 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
7716 | i += 1; | |
7717 | break; | |
7718 | ||
7719 | case DW_OP_const2u: | |
7720 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
7721 | i += 2; | |
7722 | break; | |
7723 | ||
7724 | case DW_OP_const2s: | |
7725 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
7726 | i += 2; | |
7727 | break; | |
7728 | ||
7729 | case DW_OP_const4u: | |
7730 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
7731 | i += 4; | |
7732 | break; | |
7733 | ||
7734 | case DW_OP_const4s: | |
7735 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
7736 | i += 4; | |
7737 | break; | |
7738 | ||
7739 | case DW_OP_constu: | |
7740 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 7741 | &bytes_read); |
c906108c SS |
7742 | i += bytes_read; |
7743 | break; | |
7744 | ||
7745 | case DW_OP_consts: | |
7746 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
7747 | i += bytes_read; | |
7748 | break; | |
7749 | ||
f1bea926 JM |
7750 | case DW_OP_dup: |
7751 | stack[stacki + 1] = stack[stacki]; | |
7752 | stacki++; | |
7753 | break; | |
7754 | ||
c906108c SS |
7755 | case DW_OP_plus: |
7756 | stack[stacki - 1] += stack[stacki]; | |
7757 | stacki--; | |
7758 | break; | |
7759 | ||
7760 | case DW_OP_plus_uconst: | |
7761 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7762 | i += bytes_read; | |
7763 | break; | |
7764 | ||
7765 | case DW_OP_minus: | |
f1bea926 | 7766 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
7767 | stacki--; |
7768 | break; | |
7769 | ||
7a292a7a | 7770 | case DW_OP_deref: |
7a292a7a | 7771 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
7772 | this using GDB's address_class enum. This is valid for partial |
7773 | global symbols, although the variable's address will be bogus | |
7774 | in the psymtab. */ | |
7a292a7a | 7775 | if (i < size) |
4d3c2250 | 7776 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
7777 | break; |
7778 | ||
9d774e44 | 7779 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
7780 | /* The top of the stack has the offset from the beginning |
7781 | of the thread control block at which the variable is located. */ | |
7782 | /* Nothing should follow this operator, so the top of stack would | |
7783 | be returned. */ | |
4cecd739 DJ |
7784 | /* This is valid for partial global symbols, but the variable's |
7785 | address will be bogus in the psymtab. */ | |
9d774e44 | 7786 | if (i < size) |
4d3c2250 | 7787 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
7788 | break; |
7789 | ||
c906108c | 7790 | default: |
4d3c2250 KB |
7791 | complaint (&symfile_complaints, "unsupported stack op: '%s'", |
7792 | dwarf_stack_op_name (op)); | |
c906108c SS |
7793 | return (stack[stacki]); |
7794 | } | |
7795 | } | |
7796 | return (stack[stacki]); | |
7797 | } | |
7798 | ||
7799 | /* memory allocation interface */ | |
7800 | ||
c906108c | 7801 | static void |
4efb68b1 | 7802 | dwarf2_free_tmp_obstack (void *ignore) |
c906108c SS |
7803 | { |
7804 | obstack_free (&dwarf2_tmp_obstack, NULL); | |
7805 | } | |
7806 | ||
7807 | static struct dwarf_block * | |
fba45db2 | 7808 | dwarf_alloc_block (void) |
c906108c SS |
7809 | { |
7810 | struct dwarf_block *blk; | |
7811 | ||
7812 | blk = (struct dwarf_block *) | |
7813 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct dwarf_block)); | |
7814 | return (blk); | |
7815 | } | |
7816 | ||
7817 | static struct abbrev_info * | |
f3dd6933 | 7818 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
7819 | { |
7820 | struct abbrev_info *abbrev; | |
7821 | ||
f3dd6933 DJ |
7822 | abbrev = (struct abbrev_info *) |
7823 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
7824 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
7825 | return (abbrev); | |
7826 | } | |
7827 | ||
7828 | static struct die_info * | |
fba45db2 | 7829 | dwarf_alloc_die (void) |
c906108c SS |
7830 | { |
7831 | struct die_info *die; | |
7832 | ||
7833 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7834 | memset (die, 0, sizeof (struct die_info)); | |
7835 | return (die); | |
7836 | } | |
2e276125 JB |
7837 | |
7838 | \f | |
7839 | /* Macro support. */ | |
7840 | ||
7841 | ||
7842 | /* Return the full name of file number I in *LH's file name table. | |
7843 | Use COMP_DIR as the name of the current directory of the | |
7844 | compilation. The result is allocated using xmalloc; the caller is | |
7845 | responsible for freeing it. */ | |
7846 | static char * | |
7847 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
7848 | { | |
7849 | struct file_entry *fe = &lh->file_names[file - 1]; | |
7850 | ||
7851 | if (IS_ABSOLUTE_PATH (fe->name)) | |
7852 | return xstrdup (fe->name); | |
7853 | else | |
7854 | { | |
7855 | const char *dir; | |
7856 | int dir_len; | |
7857 | char *full_name; | |
7858 | ||
7859 | if (fe->dir_index) | |
7860 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7861 | else | |
7862 | dir = comp_dir; | |
7863 | ||
7864 | if (dir) | |
7865 | { | |
7866 | dir_len = strlen (dir); | |
7867 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
7868 | strcpy (full_name, dir); | |
7869 | full_name[dir_len] = '/'; | |
7870 | strcpy (full_name + dir_len + 1, fe->name); | |
7871 | return full_name; | |
7872 | } | |
7873 | else | |
7874 | return xstrdup (fe->name); | |
7875 | } | |
7876 | } | |
7877 | ||
7878 | ||
7879 | static struct macro_source_file * | |
7880 | macro_start_file (int file, int line, | |
7881 | struct macro_source_file *current_file, | |
7882 | const char *comp_dir, | |
7883 | struct line_header *lh, struct objfile *objfile) | |
7884 | { | |
7885 | /* The full name of this source file. */ | |
7886 | char *full_name = file_full_name (file, lh, comp_dir); | |
7887 | ||
7888 | /* We don't create a macro table for this compilation unit | |
7889 | at all until we actually get a filename. */ | |
7890 | if (! pending_macros) | |
4a146b47 | 7891 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 7892 | objfile->macro_cache); |
2e276125 JB |
7893 | |
7894 | if (! current_file) | |
7895 | /* If we have no current file, then this must be the start_file | |
7896 | directive for the compilation unit's main source file. */ | |
7897 | current_file = macro_set_main (pending_macros, full_name); | |
7898 | else | |
7899 | current_file = macro_include (current_file, line, full_name); | |
7900 | ||
7901 | xfree (full_name); | |
7902 | ||
7903 | return current_file; | |
7904 | } | |
7905 | ||
7906 | ||
7907 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
7908 | followed by a null byte. */ | |
7909 | static char * | |
7910 | copy_string (const char *buf, int len) | |
7911 | { | |
7912 | char *s = xmalloc (len + 1); | |
7913 | memcpy (s, buf, len); | |
7914 | s[len] = '\0'; | |
7915 | ||
7916 | return s; | |
7917 | } | |
7918 | ||
7919 | ||
7920 | static const char * | |
7921 | consume_improper_spaces (const char *p, const char *body) | |
7922 | { | |
7923 | if (*p == ' ') | |
7924 | { | |
4d3c2250 KB |
7925 | complaint (&symfile_complaints, |
7926 | "macro definition contains spaces in formal argument list:\n`%s'", | |
7927 | body); | |
2e276125 JB |
7928 | |
7929 | while (*p == ' ') | |
7930 | p++; | |
7931 | } | |
7932 | ||
7933 | return p; | |
7934 | } | |
7935 | ||
7936 | ||
7937 | static void | |
7938 | parse_macro_definition (struct macro_source_file *file, int line, | |
7939 | const char *body) | |
7940 | { | |
7941 | const char *p; | |
7942 | ||
7943 | /* The body string takes one of two forms. For object-like macro | |
7944 | definitions, it should be: | |
7945 | ||
7946 | <macro name> " " <definition> | |
7947 | ||
7948 | For function-like macro definitions, it should be: | |
7949 | ||
7950 | <macro name> "() " <definition> | |
7951 | or | |
7952 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
7953 | ||
7954 | Spaces may appear only where explicitly indicated, and in the | |
7955 | <definition>. | |
7956 | ||
7957 | The Dwarf 2 spec says that an object-like macro's name is always | |
7958 | followed by a space, but versions of GCC around March 2002 omit | |
7959 | the space when the macro's definition is the empty string. | |
7960 | ||
7961 | The Dwarf 2 spec says that there should be no spaces between the | |
7962 | formal arguments in a function-like macro's formal argument list, | |
7963 | but versions of GCC around March 2002 include spaces after the | |
7964 | commas. */ | |
7965 | ||
7966 | ||
7967 | /* Find the extent of the macro name. The macro name is terminated | |
7968 | by either a space or null character (for an object-like macro) or | |
7969 | an opening paren (for a function-like macro). */ | |
7970 | for (p = body; *p; p++) | |
7971 | if (*p == ' ' || *p == '(') | |
7972 | break; | |
7973 | ||
7974 | if (*p == ' ' || *p == '\0') | |
7975 | { | |
7976 | /* It's an object-like macro. */ | |
7977 | int name_len = p - body; | |
7978 | char *name = copy_string (body, name_len); | |
7979 | const char *replacement; | |
7980 | ||
7981 | if (*p == ' ') | |
7982 | replacement = body + name_len + 1; | |
7983 | else | |
7984 | { | |
4d3c2250 | 7985 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7986 | replacement = body + name_len; |
7987 | } | |
7988 | ||
7989 | macro_define_object (file, line, name, replacement); | |
7990 | ||
7991 | xfree (name); | |
7992 | } | |
7993 | else if (*p == '(') | |
7994 | { | |
7995 | /* It's a function-like macro. */ | |
7996 | char *name = copy_string (body, p - body); | |
7997 | int argc = 0; | |
7998 | int argv_size = 1; | |
7999 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
8000 | ||
8001 | p++; | |
8002 | ||
8003 | p = consume_improper_spaces (p, body); | |
8004 | ||
8005 | /* Parse the formal argument list. */ | |
8006 | while (*p && *p != ')') | |
8007 | { | |
8008 | /* Find the extent of the current argument name. */ | |
8009 | const char *arg_start = p; | |
8010 | ||
8011 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
8012 | p++; | |
8013 | ||
8014 | if (! *p || p == arg_start) | |
4d3c2250 | 8015 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8016 | else |
8017 | { | |
8018 | /* Make sure argv has room for the new argument. */ | |
8019 | if (argc >= argv_size) | |
8020 | { | |
8021 | argv_size *= 2; | |
8022 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
8023 | } | |
8024 | ||
8025 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
8026 | } | |
8027 | ||
8028 | p = consume_improper_spaces (p, body); | |
8029 | ||
8030 | /* Consume the comma, if present. */ | |
8031 | if (*p == ',') | |
8032 | { | |
8033 | p++; | |
8034 | ||
8035 | p = consume_improper_spaces (p, body); | |
8036 | } | |
8037 | } | |
8038 | ||
8039 | if (*p == ')') | |
8040 | { | |
8041 | p++; | |
8042 | ||
8043 | if (*p == ' ') | |
8044 | /* Perfectly formed definition, no complaints. */ | |
8045 | macro_define_function (file, line, name, | |
8046 | argc, (const char **) argv, | |
8047 | p + 1); | |
8048 | else if (*p == '\0') | |
8049 | { | |
8050 | /* Complain, but do define it. */ | |
4d3c2250 | 8051 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8052 | macro_define_function (file, line, name, |
8053 | argc, (const char **) argv, | |
8054 | p); | |
8055 | } | |
8056 | else | |
8057 | /* Just complain. */ | |
4d3c2250 | 8058 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8059 | } |
8060 | else | |
8061 | /* Just complain. */ | |
4d3c2250 | 8062 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8063 | |
8064 | xfree (name); | |
8065 | { | |
8066 | int i; | |
8067 | ||
8068 | for (i = 0; i < argc; i++) | |
8069 | xfree (argv[i]); | |
8070 | } | |
8071 | xfree (argv); | |
8072 | } | |
8073 | else | |
4d3c2250 | 8074 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8075 | } |
8076 | ||
8077 | ||
8078 | static void | |
8079 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
8080 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 8081 | struct dwarf2_cu *cu) |
2e276125 JB |
8082 | { |
8083 | char *mac_ptr, *mac_end; | |
8084 | struct macro_source_file *current_file = 0; | |
8085 | ||
8086 | if (dwarf_macinfo_buffer == NULL) | |
8087 | { | |
4d3c2250 | 8088 | complaint (&symfile_complaints, "missing .debug_macinfo section"); |
2e276125 JB |
8089 | return; |
8090 | } | |
8091 | ||
8092 | mac_ptr = dwarf_macinfo_buffer + offset; | |
8093 | mac_end = dwarf_macinfo_buffer + dwarf_macinfo_size; | |
8094 | ||
8095 | for (;;) | |
8096 | { | |
8097 | enum dwarf_macinfo_record_type macinfo_type; | |
8098 | ||
8099 | /* Do we at least have room for a macinfo type byte? */ | |
8100 | if (mac_ptr >= mac_end) | |
8101 | { | |
4d3c2250 | 8102 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
8103 | return; |
8104 | } | |
8105 | ||
8106 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
8107 | mac_ptr++; | |
8108 | ||
8109 | switch (macinfo_type) | |
8110 | { | |
8111 | /* A zero macinfo type indicates the end of the macro | |
8112 | information. */ | |
8113 | case 0: | |
8114 | return; | |
8115 | ||
8116 | case DW_MACINFO_define: | |
8117 | case DW_MACINFO_undef: | |
8118 | { | |
8119 | int bytes_read; | |
8120 | int line; | |
8121 | char *body; | |
8122 | ||
8123 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8124 | mac_ptr += bytes_read; | |
8125 | body = read_string (abfd, mac_ptr, &bytes_read); | |
8126 | mac_ptr += bytes_read; | |
8127 | ||
8128 | if (! current_file) | |
4d3c2250 KB |
8129 | complaint (&symfile_complaints, |
8130 | "debug info gives macro %s outside of any file: %s", | |
8131 | macinfo_type == | |
8132 | DW_MACINFO_define ? "definition" : macinfo_type == | |
8133 | DW_MACINFO_undef ? "undefinition" : | |
8134 | "something-or-other", body); | |
2e276125 JB |
8135 | else |
8136 | { | |
8137 | if (macinfo_type == DW_MACINFO_define) | |
8138 | parse_macro_definition (current_file, line, body); | |
8139 | else if (macinfo_type == DW_MACINFO_undef) | |
8140 | macro_undef (current_file, line, body); | |
8141 | } | |
8142 | } | |
8143 | break; | |
8144 | ||
8145 | case DW_MACINFO_start_file: | |
8146 | { | |
8147 | int bytes_read; | |
8148 | int line, file; | |
8149 | ||
8150 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8151 | mac_ptr += bytes_read; | |
8152 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8153 | mac_ptr += bytes_read; | |
8154 | ||
8155 | current_file = macro_start_file (file, line, | |
8156 | current_file, comp_dir, | |
e7c27a73 | 8157 | lh, cu->objfile); |
2e276125 JB |
8158 | } |
8159 | break; | |
8160 | ||
8161 | case DW_MACINFO_end_file: | |
8162 | if (! current_file) | |
4d3c2250 KB |
8163 | complaint (&symfile_complaints, |
8164 | "macro debug info has an unmatched `close_file' directive"); | |
2e276125 JB |
8165 | else |
8166 | { | |
8167 | current_file = current_file->included_by; | |
8168 | if (! current_file) | |
8169 | { | |
8170 | enum dwarf_macinfo_record_type next_type; | |
8171 | ||
8172 | /* GCC circa March 2002 doesn't produce the zero | |
8173 | type byte marking the end of the compilation | |
8174 | unit. Complain if it's not there, but exit no | |
8175 | matter what. */ | |
8176 | ||
8177 | /* Do we at least have room for a macinfo type byte? */ | |
8178 | if (mac_ptr >= mac_end) | |
8179 | { | |
4d3c2250 | 8180 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
8181 | return; |
8182 | } | |
8183 | ||
8184 | /* We don't increment mac_ptr here, so this is just | |
8185 | a look-ahead. */ | |
8186 | next_type = read_1_byte (abfd, mac_ptr); | |
8187 | if (next_type != 0) | |
4d3c2250 KB |
8188 | complaint (&symfile_complaints, |
8189 | "no terminating 0-type entry for macros in `.debug_macinfo' section"); | |
2e276125 JB |
8190 | |
8191 | return; | |
8192 | } | |
8193 | } | |
8194 | break; | |
8195 | ||
8196 | case DW_MACINFO_vendor_ext: | |
8197 | { | |
8198 | int bytes_read; | |
8199 | int constant; | |
8200 | char *string; | |
8201 | ||
8202 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8203 | mac_ptr += bytes_read; | |
8204 | string = read_string (abfd, mac_ptr, &bytes_read); | |
8205 | mac_ptr += bytes_read; | |
8206 | ||
8207 | /* We don't recognize any vendor extensions. */ | |
8208 | } | |
8209 | break; | |
8210 | } | |
8211 | } | |
8212 | } | |
8e19ed76 PS |
8213 | |
8214 | /* Check if the attribute's form is a DW_FORM_block* | |
8215 | if so return true else false. */ | |
8216 | static int | |
8217 | attr_form_is_block (struct attribute *attr) | |
8218 | { | |
8219 | return (attr == NULL ? 0 : | |
8220 | attr->form == DW_FORM_block1 | |
8221 | || attr->form == DW_FORM_block2 | |
8222 | || attr->form == DW_FORM_block4 | |
8223 | || attr->form == DW_FORM_block); | |
8224 | } | |
4c2df51b DJ |
8225 | |
8226 | static void | |
8227 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 8228 | struct dwarf2_cu *cu) |
4c2df51b | 8229 | { |
0d53c4c4 | 8230 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 8231 | { |
0d53c4c4 | 8232 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 8233 | |
4a146b47 | 8234 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8235 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 8236 | baton->objfile = cu->objfile; |
4c2df51b | 8237 | |
0d53c4c4 DJ |
8238 | /* We don't know how long the location list is, but make sure we |
8239 | don't run off the edge of the section. */ | |
8240 | baton->size = dwarf_loc_size - DW_UNSND (attr); | |
8241 | baton->data = dwarf_loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
8242 | baton->base_address = cu->header.base_address; |
8243 | if (cu->header.base_known == 0) | |
0d53c4c4 DJ |
8244 | complaint (&symfile_complaints, |
8245 | "Location list used without specifying the CU base address."); | |
4c2df51b | 8246 | |
a67af2b9 | 8247 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
8248 | SYMBOL_LOCATION_BATON (sym) = baton; |
8249 | } | |
8250 | else | |
8251 | { | |
8252 | struct dwarf2_locexpr_baton *baton; | |
8253 | ||
4a146b47 | 8254 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8255 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 8256 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
8257 | |
8258 | if (attr_form_is_block (attr)) | |
8259 | { | |
8260 | /* Note that we're just copying the block's data pointer | |
8261 | here, not the actual data. We're still pointing into the | |
8262 | dwarf_info_buffer for SYM's objfile; right now we never | |
8263 | release that buffer, but when we do clean up properly | |
8264 | this may need to change. */ | |
8265 | baton->size = DW_BLOCK (attr)->size; | |
8266 | baton->data = DW_BLOCK (attr)->data; | |
8267 | } | |
8268 | else | |
8269 | { | |
8270 | dwarf2_invalid_attrib_class_complaint ("location description", | |
8271 | SYMBOL_NATURAL_NAME (sym)); | |
8272 | baton->size = 0; | |
8273 | baton->data = NULL; | |
8274 | } | |
8275 | ||
a67af2b9 | 8276 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
8277 | SYMBOL_LOCATION_BATON (sym) = baton; |
8278 | } | |
4c2df51b | 8279 | } |