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 | ||
88496bb5 MS |
53 | #ifndef DWARF2_REG_TO_REGNUM |
54 | #define DWARF2_REG_TO_REGNUM(REG) (REG) | |
55 | #endif | |
56 | ||
107d2387 | 57 | #if 0 |
357e46e7 | 58 | /* .debug_info header for a compilation unit |
c906108c SS |
59 | Because of alignment constraints, this structure has padding and cannot |
60 | be mapped directly onto the beginning of the .debug_info section. */ | |
61 | typedef struct comp_unit_header | |
62 | { | |
63 | unsigned int length; /* length of the .debug_info | |
64 | contribution */ | |
65 | unsigned short version; /* version number -- 2 for DWARF | |
66 | version 2 */ | |
67 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
68 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
69 | } | |
70 | _COMP_UNIT_HEADER; | |
71 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 72 | #endif |
c906108c SS |
73 | |
74 | /* .debug_pubnames header | |
75 | Because of alignment constraints, this structure has padding and cannot | |
76 | be mapped directly onto the beginning of the .debug_info section. */ | |
77 | typedef struct pubnames_header | |
78 | { | |
79 | unsigned int length; /* length of the .debug_pubnames | |
80 | contribution */ | |
81 | unsigned char version; /* version number -- 2 for DWARF | |
82 | version 2 */ | |
83 | unsigned int info_offset; /* offset into .debug_info section */ | |
84 | unsigned int info_size; /* byte size of .debug_info section | |
85 | portion */ | |
86 | } | |
87 | _PUBNAMES_HEADER; | |
88 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
89 | ||
90 | /* .debug_pubnames header | |
91 | Because of alignment constraints, this structure has padding and cannot | |
92 | be mapped directly onto the beginning of the .debug_info section. */ | |
93 | typedef struct aranges_header | |
94 | { | |
95 | unsigned int length; /* byte len of the .debug_aranges | |
96 | contribution */ | |
97 | unsigned short version; /* version number -- 2 for DWARF | |
98 | version 2 */ | |
99 | unsigned int info_offset; /* offset into .debug_info section */ | |
100 | unsigned char addr_size; /* byte size of an address */ | |
101 | unsigned char seg_size; /* byte size of segment descriptor */ | |
102 | } | |
103 | _ARANGES_HEADER; | |
104 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
105 | ||
106 | /* .debug_line statement program prologue | |
107 | Because of alignment constraints, this structure has padding and cannot | |
108 | be mapped directly onto the beginning of the .debug_info section. */ | |
109 | typedef struct statement_prologue | |
110 | { | |
111 | unsigned int total_length; /* byte length of the statement | |
112 | information */ | |
113 | unsigned short version; /* version number -- 2 for DWARF | |
114 | version 2 */ | |
115 | unsigned int prologue_length; /* # bytes between prologue & | |
116 | stmt program */ | |
117 | unsigned char minimum_instruction_length; /* byte size of | |
118 | smallest instr */ | |
119 | unsigned char default_is_stmt; /* initial value of is_stmt | |
120 | register */ | |
121 | char line_base; | |
122 | unsigned char line_range; | |
123 | unsigned char opcode_base; /* number assigned to first special | |
124 | opcode */ | |
125 | unsigned char *standard_opcode_lengths; | |
126 | } | |
127 | _STATEMENT_PROLOGUE; | |
128 | ||
129 | /* offsets and sizes of debugging sections */ | |
130 | ||
c906108c SS |
131 | static unsigned int dwarf_info_size; |
132 | static unsigned int dwarf_abbrev_size; | |
133 | static unsigned int dwarf_line_size; | |
134 | static unsigned int dwarf_pubnames_size; | |
135 | static unsigned int dwarf_aranges_size; | |
136 | static unsigned int dwarf_loc_size; | |
137 | static unsigned int dwarf_macinfo_size; | |
138 | static unsigned int dwarf_str_size; | |
af34e669 | 139 | static unsigned int dwarf_ranges_size; |
b6af0555 JS |
140 | unsigned int dwarf_frame_size; |
141 | unsigned int dwarf_eh_frame_size; | |
c906108c | 142 | |
086df311 DJ |
143 | static asection *dwarf_info_section; |
144 | static asection *dwarf_abbrev_section; | |
145 | static asection *dwarf_line_section; | |
146 | static asection *dwarf_pubnames_section; | |
147 | static asection *dwarf_aranges_section; | |
148 | static asection *dwarf_loc_section; | |
149 | static asection *dwarf_macinfo_section; | |
150 | static asection *dwarf_str_section; | |
151 | static asection *dwarf_ranges_section; | |
152 | asection *dwarf_frame_section; | |
153 | asection *dwarf_eh_frame_section; | |
154 | ||
c906108c SS |
155 | /* names of the debugging sections */ |
156 | ||
157 | #define INFO_SECTION ".debug_info" | |
158 | #define ABBREV_SECTION ".debug_abbrev" | |
159 | #define LINE_SECTION ".debug_line" | |
160 | #define PUBNAMES_SECTION ".debug_pubnames" | |
161 | #define ARANGES_SECTION ".debug_aranges" | |
162 | #define LOC_SECTION ".debug_loc" | |
163 | #define MACINFO_SECTION ".debug_macinfo" | |
164 | #define STR_SECTION ".debug_str" | |
af34e669 | 165 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
166 | #define FRAME_SECTION ".debug_frame" |
167 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
168 | |
169 | /* local data types */ | |
170 | ||
57349743 JB |
171 | /* We hold several abbreviation tables in memory at the same time. */ |
172 | #ifndef ABBREV_HASH_SIZE | |
173 | #define ABBREV_HASH_SIZE 121 | |
174 | #endif | |
175 | ||
107d2387 AC |
176 | /* The data in a compilation unit header, after target2host |
177 | translation, looks like this. */ | |
c906108c SS |
178 | struct comp_unit_head |
179 | { | |
613e1657 | 180 | unsigned long length; |
c906108c SS |
181 | short version; |
182 | unsigned int abbrev_offset; | |
183 | unsigned char addr_size; | |
107d2387 | 184 | unsigned char signed_addr_p; |
613e1657 KB |
185 | unsigned int offset_size; /* size of file offsets; either 4 or 8 */ |
186 | unsigned int initial_length_size; /* size of the length field; either | |
187 | 4 or 12 */ | |
57349743 JB |
188 | |
189 | /* Offset to the first byte of this compilation unit header in the | |
190 | * .debug_info section, for resolving relative reference dies. */ | |
191 | ||
192 | unsigned int offset; | |
193 | ||
194 | /* Pointer to this compilation unit header in the .debug_info | |
195 | * section */ | |
196 | ||
197 | char *cu_head_ptr; | |
198 | ||
199 | /* Pointer to the first die of this compilatio unit. This will | |
200 | * be the first byte following the compilation unit header. */ | |
201 | ||
202 | char *first_die_ptr; | |
203 | ||
204 | /* Pointer to the next compilation unit header in the program. */ | |
205 | ||
206 | struct comp_unit_head *next; | |
207 | ||
208 | /* DWARF abbreviation table associated with this compilation unit */ | |
209 | ||
210 | struct abbrev_info *dwarf2_abbrevs[ABBREV_HASH_SIZE]; | |
af34e669 | 211 | |
0d53c4c4 | 212 | /* Base address of this compilation unit. */ |
af34e669 | 213 | |
0d53c4c4 DJ |
214 | CORE_ADDR base_address; |
215 | ||
216 | /* Non-zero if base_address has been set. */ | |
217 | ||
218 | int base_known; | |
c906108c SS |
219 | }; |
220 | ||
e7c27a73 DJ |
221 | /* Internal state when decoding a particular compilation unit. */ |
222 | struct dwarf2_cu | |
223 | { | |
224 | /* The objfile containing this compilation unit. */ | |
225 | struct objfile *objfile; | |
226 | ||
227 | /* The header of the compilation unit. | |
228 | ||
229 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
230 | should be moved to the dwarf2_cu structure; for instance the abbrevs | |
231 | hash table. */ | |
232 | struct comp_unit_head header; | |
e142c38c DJ |
233 | |
234 | struct function_range *first_fn, *last_fn, *cached_fn; | |
235 | ||
236 | /* The language we are debugging. */ | |
237 | enum language language; | |
238 | const struct language_defn *language_defn; | |
239 | ||
240 | /* The generic symbol table building routines have separate lists for | |
241 | file scope symbols and all all other scopes (local scopes). So | |
242 | we need to select the right one to pass to add_symbol_to_list(). | |
243 | We do it by keeping a pointer to the correct list in list_in_scope. | |
244 | ||
245 | FIXME: The original dwarf code just treated the file scope as the | |
246 | first local scope, and all other local scopes as nested local | |
247 | scopes, and worked fine. Check to see if we really need to | |
248 | distinguish these in buildsym.c. */ | |
249 | struct pending **list_in_scope; | |
250 | ||
251 | /* Maintain an array of referenced fundamental types for the current | |
252 | compilation unit being read. For DWARF version 1, we have to construct | |
253 | the fundamental types on the fly, since no information about the | |
254 | fundamental types is supplied. Each such fundamental type is created by | |
255 | calling a language dependent routine to create the type, and then a | |
256 | pointer to that type is then placed in the array at the index specified | |
257 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
258 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
259 | fundamental types gdb knows how to construct. */ | |
260 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
e7c27a73 DJ |
261 | }; |
262 | ||
debd256d JB |
263 | /* The line number information for a compilation unit (found in the |
264 | .debug_line section) begins with a "statement program header", | |
265 | which contains the following information. */ | |
266 | struct line_header | |
267 | { | |
268 | unsigned int total_length; | |
269 | unsigned short version; | |
270 | unsigned int header_length; | |
271 | unsigned char minimum_instruction_length; | |
272 | unsigned char default_is_stmt; | |
273 | int line_base; | |
274 | unsigned char line_range; | |
275 | unsigned char opcode_base; | |
276 | ||
277 | /* standard_opcode_lengths[i] is the number of operands for the | |
278 | standard opcode whose value is i. This means that | |
279 | standard_opcode_lengths[0] is unused, and the last meaningful | |
280 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
281 | unsigned char *standard_opcode_lengths; | |
282 | ||
283 | /* The include_directories table. NOTE! These strings are not | |
284 | allocated with xmalloc; instead, they are pointers into | |
285 | debug_line_buffer. If you try to free them, `free' will get | |
286 | indigestion. */ | |
287 | unsigned int num_include_dirs, include_dirs_size; | |
288 | char **include_dirs; | |
289 | ||
290 | /* The file_names table. NOTE! These strings are not allocated | |
291 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
292 | Don't try to free them directly. */ | |
293 | unsigned int num_file_names, file_names_size; | |
294 | struct file_entry | |
c906108c | 295 | { |
debd256d JB |
296 | char *name; |
297 | unsigned int dir_index; | |
298 | unsigned int mod_time; | |
299 | unsigned int length; | |
300 | } *file_names; | |
301 | ||
302 | /* The start and end of the statement program following this | |
303 | header. These point into dwarf_line_buffer. */ | |
304 | char *statement_program_start, *statement_program_end; | |
305 | }; | |
c906108c SS |
306 | |
307 | /* When we construct a partial symbol table entry we only | |
308 | need this much information. */ | |
309 | struct partial_die_info | |
310 | { | |
311 | enum dwarf_tag tag; | |
312 | unsigned char has_children; | |
313 | unsigned char is_external; | |
314 | unsigned char is_declaration; | |
315 | unsigned char has_type; | |
316 | unsigned int offset; | |
317 | unsigned int abbrev; | |
318 | char *name; | |
0b010bcc | 319 | int has_pc_info; |
c906108c SS |
320 | CORE_ADDR lowpc; |
321 | CORE_ADDR highpc; | |
322 | struct dwarf_block *locdesc; | |
323 | unsigned int language; | |
324 | char *sibling; | |
325 | }; | |
326 | ||
327 | /* This data structure holds the information of an abbrev. */ | |
328 | struct abbrev_info | |
329 | { | |
330 | unsigned int number; /* number identifying abbrev */ | |
331 | enum dwarf_tag tag; /* dwarf tag */ | |
332 | int has_children; /* boolean */ | |
333 | unsigned int num_attrs; /* number of attributes */ | |
334 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ | |
335 | struct abbrev_info *next; /* next in chain */ | |
336 | }; | |
337 | ||
338 | struct attr_abbrev | |
339 | { | |
340 | enum dwarf_attribute name; | |
341 | enum dwarf_form form; | |
342 | }; | |
343 | ||
344 | /* This data structure holds a complete die structure. */ | |
345 | struct die_info | |
346 | { | |
c5aa993b | 347 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
348 | unsigned int abbrev; /* Abbrev number */ |
349 | unsigned int offset; /* Offset in .debug_info section */ | |
350 | unsigned int num_attrs; /* Number of attributes */ | |
351 | struct attribute *attrs; /* An array of attributes */ | |
352 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
353 | |
354 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
355 | points to this die's parent; CHILD points to the first child of | |
356 | this node; and all the children of a given node are chained | |
357 | together via their SIBLING fields, terminated by a die whose | |
358 | tag is zero. */ | |
639d11d3 DC |
359 | struct die_info *child; /* Its first child, if any. */ |
360 | struct die_info *sibling; /* Its next sibling, if any. */ | |
361 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 362 | |
c5aa993b | 363 | struct type *type; /* Cached type information */ |
c906108c SS |
364 | }; |
365 | ||
366 | /* Attributes have a name and a value */ | |
367 | struct attribute | |
368 | { | |
369 | enum dwarf_attribute name; | |
370 | enum dwarf_form form; | |
371 | union | |
372 | { | |
373 | char *str; | |
374 | struct dwarf_block *blk; | |
ce5d95e1 JB |
375 | unsigned long unsnd; |
376 | long int snd; | |
c906108c SS |
377 | CORE_ADDR addr; |
378 | } | |
379 | u; | |
380 | }; | |
381 | ||
5fb290d7 DJ |
382 | struct function_range |
383 | { | |
384 | const char *name; | |
385 | CORE_ADDR lowpc, highpc; | |
386 | int seen_line; | |
387 | struct function_range *next; | |
388 | }; | |
389 | ||
c906108c SS |
390 | /* Get at parts of an attribute structure */ |
391 | ||
392 | #define DW_STRING(attr) ((attr)->u.str) | |
393 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
394 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
395 | #define DW_SND(attr) ((attr)->u.snd) | |
396 | #define DW_ADDR(attr) ((attr)->u.addr) | |
397 | ||
398 | /* Blocks are a bunch of untyped bytes. */ | |
399 | struct dwarf_block | |
400 | { | |
401 | unsigned int size; | |
402 | char *data; | |
403 | }; | |
404 | ||
c906108c SS |
405 | #ifndef ATTR_ALLOC_CHUNK |
406 | #define ATTR_ALLOC_CHUNK 4 | |
407 | #endif | |
408 | ||
c906108c SS |
409 | /* A hash table of die offsets for following references. */ |
410 | #ifndef REF_HASH_SIZE | |
411 | #define REF_HASH_SIZE 1021 | |
412 | #endif | |
413 | ||
414 | static struct die_info *die_ref_table[REF_HASH_SIZE]; | |
415 | ||
416 | /* Obstack for allocating temporary storage used during symbol reading. */ | |
417 | static struct obstack dwarf2_tmp_obstack; | |
418 | ||
c906108c SS |
419 | /* Allocate fields for structs, unions and enums in this size. */ |
420 | #ifndef DW_FIELD_ALLOC_CHUNK | |
421 | #define DW_FIELD_ALLOC_CHUNK 4 | |
422 | #endif | |
423 | ||
c906108c SS |
424 | /* Actually data from the sections. */ |
425 | static char *dwarf_info_buffer; | |
426 | static char *dwarf_abbrev_buffer; | |
427 | static char *dwarf_line_buffer; | |
4bdf3d34 | 428 | static char *dwarf_str_buffer; |
2e276125 | 429 | static char *dwarf_macinfo_buffer; |
af34e669 | 430 | static char *dwarf_ranges_buffer; |
0d53c4c4 | 431 | static char *dwarf_loc_buffer; |
c906108c SS |
432 | |
433 | /* A zeroed version of a partial die for initialization purposes. */ | |
434 | static struct partial_die_info zeroed_partial_die; | |
435 | ||
7a292a7a SS |
436 | /* FIXME: decode_locdesc sets these variables to describe the location |
437 | to the caller. These ought to be a structure or something. If | |
438 | none of the flags are set, the object lives at the address returned | |
439 | by decode_locdesc. */ | |
440 | ||
7a292a7a SS |
441 | static int isreg; /* Object lives in register. |
442 | decode_locdesc's return value is | |
443 | the register number. */ | |
c906108c | 444 | |
c906108c SS |
445 | /* We put a pointer to this structure in the read_symtab_private field |
446 | of the psymtab. | |
447 | The complete dwarf information for an objfile is kept in the | |
8b92e4d5 | 448 | objfile_obstack, so that absolute die references can be handled. |
c906108c SS |
449 | Most of the information in this structure is related to an entire |
450 | object file and could be passed via the sym_private field of the objfile. | |
451 | It is however conceivable that dwarf2 might not be the only type | |
452 | of symbols read from an object file. */ | |
453 | ||
454 | struct dwarf2_pinfo | |
c5aa993b JM |
455 | { |
456 | /* Pointer to start of dwarf info buffer for the objfile. */ | |
c906108c | 457 | |
c5aa993b | 458 | char *dwarf_info_buffer; |
c906108c | 459 | |
c5aa993b | 460 | /* Offset in dwarf_info_buffer for this compilation unit. */ |
c906108c | 461 | |
c5aa993b | 462 | unsigned long dwarf_info_offset; |
c906108c | 463 | |
c5aa993b | 464 | /* Pointer to start of dwarf abbreviation buffer for the objfile. */ |
c906108c | 465 | |
c5aa993b | 466 | char *dwarf_abbrev_buffer; |
c906108c | 467 | |
c5aa993b | 468 | /* Size of dwarf abbreviation section for the objfile. */ |
c906108c | 469 | |
c5aa993b | 470 | unsigned int dwarf_abbrev_size; |
c906108c | 471 | |
c5aa993b | 472 | /* Pointer to start of dwarf line buffer for the objfile. */ |
c906108c | 473 | |
c5aa993b | 474 | char *dwarf_line_buffer; |
4bdf3d34 | 475 | |
9ab3e532 JB |
476 | /* Size of dwarf_line_buffer, in bytes. */ |
477 | ||
478 | unsigned int dwarf_line_size; | |
479 | ||
4bdf3d34 JJ |
480 | /* Pointer to start of dwarf string buffer for the objfile. */ |
481 | ||
482 | char *dwarf_str_buffer; | |
483 | ||
484 | /* Size of dwarf string section for the objfile. */ | |
485 | ||
486 | unsigned int dwarf_str_size; | |
2e276125 JB |
487 | |
488 | /* Pointer to start of dwarf macro buffer for the objfile. */ | |
489 | ||
490 | char *dwarf_macinfo_buffer; | |
491 | ||
492 | /* Size of dwarf macinfo section for the objfile. */ | |
493 | ||
494 | unsigned int dwarf_macinfo_size; | |
495 | ||
af34e669 DJ |
496 | /* Pointer to start of dwarf ranges buffer for the objfile. */ |
497 | ||
498 | char *dwarf_ranges_buffer; | |
499 | ||
500 | /* Size of dwarf ranges buffer for the objfile. */ | |
501 | ||
502 | unsigned int dwarf_ranges_size; | |
503 | ||
0d53c4c4 DJ |
504 | /* Pointer to start of dwarf locations buffer for the objfile. */ |
505 | ||
506 | char *dwarf_loc_buffer; | |
507 | ||
508 | /* Size of dwarf locations buffer for the objfile. */ | |
509 | ||
510 | unsigned int dwarf_loc_size; | |
c5aa993b | 511 | }; |
c906108c SS |
512 | |
513 | #define PST_PRIVATE(p) ((struct dwarf2_pinfo *)(p)->read_symtab_private) | |
514 | #define DWARF_INFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_info_buffer) | |
515 | #define DWARF_INFO_OFFSET(p) (PST_PRIVATE(p)->dwarf_info_offset) | |
516 | #define DWARF_ABBREV_BUFFER(p) (PST_PRIVATE(p)->dwarf_abbrev_buffer) | |
517 | #define DWARF_ABBREV_SIZE(p) (PST_PRIVATE(p)->dwarf_abbrev_size) | |
518 | #define DWARF_LINE_BUFFER(p) (PST_PRIVATE(p)->dwarf_line_buffer) | |
9ab3e532 | 519 | #define DWARF_LINE_SIZE(p) (PST_PRIVATE(p)->dwarf_line_size) |
4bdf3d34 JJ |
520 | #define DWARF_STR_BUFFER(p) (PST_PRIVATE(p)->dwarf_str_buffer) |
521 | #define DWARF_STR_SIZE(p) (PST_PRIVATE(p)->dwarf_str_size) | |
2e276125 JB |
522 | #define DWARF_MACINFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_macinfo_buffer) |
523 | #define DWARF_MACINFO_SIZE(p) (PST_PRIVATE(p)->dwarf_macinfo_size) | |
af34e669 DJ |
524 | #define DWARF_RANGES_BUFFER(p) (PST_PRIVATE(p)->dwarf_ranges_buffer) |
525 | #define DWARF_RANGES_SIZE(p) (PST_PRIVATE(p)->dwarf_ranges_size) | |
0d53c4c4 DJ |
526 | #define DWARF_LOC_BUFFER(p) (PST_PRIVATE(p)->dwarf_loc_buffer) |
527 | #define DWARF_LOC_SIZE(p) (PST_PRIVATE(p)->dwarf_loc_size) | |
c906108c | 528 | |
c906108c SS |
529 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
530 | but this would require a corresponding change in unpack_field_as_long | |
531 | and friends. */ | |
532 | static int bits_per_byte = 8; | |
533 | ||
534 | /* The routines that read and process dies for a C struct or C++ class | |
535 | pass lists of data member fields and lists of member function fields | |
536 | in an instance of a field_info structure, as defined below. */ | |
537 | struct field_info | |
c5aa993b JM |
538 | { |
539 | /* List of data member and baseclasses fields. */ | |
540 | struct nextfield | |
541 | { | |
542 | struct nextfield *next; | |
543 | int accessibility; | |
544 | int virtuality; | |
545 | struct field field; | |
546 | } | |
547 | *fields; | |
c906108c | 548 | |
c5aa993b JM |
549 | /* Number of fields. */ |
550 | int nfields; | |
c906108c | 551 | |
c5aa993b JM |
552 | /* Number of baseclasses. */ |
553 | int nbaseclasses; | |
c906108c | 554 | |
c5aa993b JM |
555 | /* Set if the accesibility of one of the fields is not public. */ |
556 | int non_public_fields; | |
c906108c | 557 | |
c5aa993b JM |
558 | /* Member function fields array, entries are allocated in the order they |
559 | are encountered in the object file. */ | |
560 | struct nextfnfield | |
561 | { | |
562 | struct nextfnfield *next; | |
563 | struct fn_field fnfield; | |
564 | } | |
565 | *fnfields; | |
c906108c | 566 | |
c5aa993b JM |
567 | /* Member function fieldlist array, contains name of possibly overloaded |
568 | member function, number of overloaded member functions and a pointer | |
569 | to the head of the member function field chain. */ | |
570 | struct fnfieldlist | |
571 | { | |
572 | char *name; | |
573 | int length; | |
574 | struct nextfnfield *head; | |
575 | } | |
576 | *fnfieldlists; | |
c906108c | 577 | |
c5aa993b JM |
578 | /* Number of entries in the fnfieldlists array. */ |
579 | int nfnfields; | |
580 | }; | |
c906108c | 581 | |
c906108c SS |
582 | /* Various complaints about symbol reading that don't abort the process */ |
583 | ||
4d3c2250 KB |
584 | static void |
585 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 586 | { |
4d3c2250 KB |
587 | complaint (&symfile_complaints, |
588 | "statement list doesn't fit in .debug_line section"); | |
589 | } | |
590 | ||
591 | static void | |
592 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 593 | { |
4d3c2250 KB |
594 | complaint (&symfile_complaints, "location expression too complex"); |
595 | } | |
596 | ||
4d3c2250 KB |
597 | static void |
598 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
599 | int arg3) | |
2e276125 | 600 | { |
4d3c2250 KB |
601 | complaint (&symfile_complaints, |
602 | "const value length mismatch for '%s', got %d, expected %d", arg1, | |
603 | arg2, arg3); | |
604 | } | |
605 | ||
606 | static void | |
607 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 608 | { |
4d3c2250 KB |
609 | complaint (&symfile_complaints, |
610 | "macro info runs off end of `.debug_macinfo' section"); | |
611 | } | |
612 | ||
613 | static void | |
614 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 615 | { |
4d3c2250 KB |
616 | complaint (&symfile_complaints, |
617 | "macro debug info contains a malformed macro definition:\n`%s'", | |
618 | arg1); | |
619 | } | |
620 | ||
621 | static void | |
622 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 623 | { |
4d3c2250 KB |
624 | complaint (&symfile_complaints, |
625 | "invalid attribute class or form for '%s' in '%s'", arg1, arg2); | |
626 | } | |
c906108c | 627 | |
c906108c SS |
628 | /* local function prototypes */ |
629 | ||
4efb68b1 | 630 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
631 | |
632 | #if 0 | |
a14ed312 | 633 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
634 | #endif |
635 | ||
a14ed312 | 636 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 637 | |
e7c27a73 DJ |
638 | static char *scan_partial_symbols (char *, CORE_ADDR *, CORE_ADDR *, |
639 | struct dwarf2_cu *, | |
5c4e30ca | 640 | const char *namespace); |
c906108c | 641 | |
e7c27a73 | 642 | static void add_partial_symbol (struct partial_die_info *, struct dwarf2_cu *, |
5c4e30ca | 643 | const char *namespace); |
c906108c | 644 | |
63d06c5c DC |
645 | static int pdi_needs_namespace (enum dwarf_tag tag, const char *namespace); |
646 | ||
91c24f0a DC |
647 | static char *add_partial_namespace (struct partial_die_info *pdi, |
648 | char *info_ptr, | |
91c24f0a | 649 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 650 | struct dwarf2_cu *cu, |
5c4e30ca | 651 | const char *namespace); |
91c24f0a | 652 | |
63d06c5c DC |
653 | static char *add_partial_structure (struct partial_die_info *struct_pdi, |
654 | char *info_ptr, | |
655 | struct dwarf2_cu *cu, | |
656 | const char *namespace); | |
657 | ||
91c24f0a DC |
658 | static char *add_partial_enumeration (struct partial_die_info *enum_pdi, |
659 | char *info_ptr, | |
e7c27a73 | 660 | struct dwarf2_cu *cu, |
5c4e30ca | 661 | const char *namespace); |
91c24f0a DC |
662 | |
663 | static char *locate_pdi_sibling (struct partial_die_info *orig_pdi, | |
664 | char *info_ptr, | |
665 | bfd *abfd, | |
e7c27a73 | 666 | struct dwarf2_cu *cu); |
91c24f0a | 667 | |
a14ed312 | 668 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 669 | |
a14ed312 | 670 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 671 | |
188dd5d6 | 672 | char *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 673 | |
e7c27a73 | 674 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 675 | |
4efb68b1 | 676 | static void dwarf2_empty_abbrev_table (void *); |
c906108c | 677 | |
57349743 | 678 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 679 | struct dwarf2_cu *); |
c906108c | 680 | |
a14ed312 | 681 | static char *read_partial_die (struct partial_die_info *, |
e7c27a73 | 682 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 683 | |
107d2387 | 684 | static char *read_full_die (struct die_info **, bfd *, char *, |
e7c27a73 | 685 | struct dwarf2_cu *, int *); |
c906108c | 686 | |
a14ed312 | 687 | static char *read_attribute (struct attribute *, struct attr_abbrev *, |
e7c27a73 | 688 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 689 | |
a8329558 | 690 | static char *read_attribute_value (struct attribute *, unsigned, |
e7c27a73 | 691 | bfd *, char *, struct dwarf2_cu *); |
a8329558 | 692 | |
a14ed312 | 693 | static unsigned int read_1_byte (bfd *, char *); |
c906108c | 694 | |
a14ed312 | 695 | static int read_1_signed_byte (bfd *, char *); |
c906108c | 696 | |
a14ed312 | 697 | static unsigned int read_2_bytes (bfd *, char *); |
c906108c | 698 | |
a14ed312 | 699 | static unsigned int read_4_bytes (bfd *, char *); |
c906108c | 700 | |
ce5d95e1 | 701 | static unsigned long read_8_bytes (bfd *, char *); |
c906108c | 702 | |
e7c27a73 | 703 | static CORE_ADDR read_address (bfd *, char *ptr, struct dwarf2_cu *, |
107d2387 | 704 | int *bytes_read); |
c906108c | 705 | |
613e1657 KB |
706 | static LONGEST read_initial_length (bfd *, char *, |
707 | struct comp_unit_head *, int *bytes_read); | |
708 | ||
709 | static LONGEST read_offset (bfd *, char *, const struct comp_unit_head *, | |
710 | int *bytes_read); | |
711 | ||
a14ed312 | 712 | static char *read_n_bytes (bfd *, char *, unsigned int); |
c906108c | 713 | |
a14ed312 | 714 | static char *read_string (bfd *, char *, unsigned int *); |
c906108c | 715 | |
4bdf3d34 JJ |
716 | static char *read_indirect_string (bfd *, char *, const struct comp_unit_head *, |
717 | unsigned int *); | |
718 | ||
ce5d95e1 | 719 | static unsigned long read_unsigned_leb128 (bfd *, char *, unsigned int *); |
c906108c | 720 | |
ce5d95e1 | 721 | static long read_signed_leb128 (bfd *, char *, unsigned int *); |
c906108c | 722 | |
e142c38c | 723 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 724 | |
e142c38c DJ |
725 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
726 | struct dwarf2_cu *); | |
c906108c | 727 | |
e142c38c | 728 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 729 | |
e142c38c DJ |
730 | static struct die_info *die_specification (struct die_info *die, |
731 | struct dwarf2_cu *); | |
63d06c5c | 732 | |
debd256d JB |
733 | static void free_line_header (struct line_header *lh); |
734 | ||
735 | static struct line_header *(dwarf_decode_line_header | |
736 | (unsigned int offset, | |
e7c27a73 | 737 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
738 | |
739 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
e7c27a73 | 740 | struct dwarf2_cu *); |
c906108c | 741 | |
a14ed312 | 742 | static void dwarf2_start_subfile (char *, char *); |
c906108c | 743 | |
a14ed312 | 744 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 745 | struct dwarf2_cu *); |
c906108c | 746 | |
a14ed312 | 747 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 748 | struct dwarf2_cu *); |
c906108c | 749 | |
2df3850c JM |
750 | static void dwarf2_const_value_data (struct attribute *attr, |
751 | struct symbol *sym, | |
752 | int bits); | |
753 | ||
e7c27a73 | 754 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 755 | |
e7c27a73 DJ |
756 | static struct type *die_containing_type (struct die_info *, |
757 | struct dwarf2_cu *); | |
c906108c SS |
758 | |
759 | #if 0 | |
a14ed312 | 760 | static struct type *type_at_offset (unsigned int, struct objfile *); |
c906108c SS |
761 | #endif |
762 | ||
e7c27a73 | 763 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 764 | |
e7c27a73 | 765 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 766 | |
086ed43d | 767 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 768 | |
e142c38c | 769 | static char *determine_prefix_aux (struct die_info *die, struct dwarf2_cu *); |
fdde2d81 | 770 | |
63d06c5c DC |
771 | static char *typename_concat (const char *prefix, const char *suffix); |
772 | ||
e142c38c | 773 | static char *class_name (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 774 | |
e7c27a73 | 775 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 776 | |
e7c27a73 | 777 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 778 | |
a02abb62 JB |
779 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
780 | ||
e7c27a73 | 781 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 782 | |
e7c27a73 | 783 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 784 | |
e7c27a73 | 785 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 786 | |
a14ed312 | 787 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 788 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 789 | |
fae299cd DC |
790 | static void get_scope_pc_bounds (struct die_info *, |
791 | CORE_ADDR *, CORE_ADDR *, | |
792 | struct dwarf2_cu *); | |
793 | ||
a14ed312 | 794 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 795 | struct dwarf2_cu *); |
c906108c | 796 | |
a14ed312 | 797 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 798 | struct type *, struct dwarf2_cu *); |
c906108c | 799 | |
a14ed312 | 800 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 801 | struct die_info *, struct type *, |
e7c27a73 | 802 | struct dwarf2_cu *); |
c906108c | 803 | |
a14ed312 | 804 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 805 | struct type *, struct dwarf2_cu *); |
c906108c | 806 | |
e7c27a73 | 807 | static void read_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 808 | |
e7c27a73 | 809 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 810 | |
e7c27a73 | 811 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 812 | |
38d518c9 | 813 | static const char *namespace_name (struct die_info *die, |
e142c38c | 814 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 815 | |
e7c27a73 | 816 | static void read_enumeration (struct die_info *, struct dwarf2_cu *); |
c906108c | 817 | |
e7c27a73 | 818 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 819 | |
e7c27a73 | 820 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 821 | |
e7c27a73 | 822 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 823 | |
e7c27a73 | 824 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 825 | |
e7c27a73 DJ |
826 | static void read_tag_ptr_to_member_type (struct die_info *, |
827 | struct dwarf2_cu *); | |
c906108c | 828 | |
e7c27a73 | 829 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 830 | |
e7c27a73 | 831 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 832 | |
e7c27a73 | 833 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 834 | |
e7c27a73 | 835 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 836 | |
e7c27a73 | 837 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 838 | |
e7c27a73 | 839 | static struct die_info *read_comp_unit (char *, bfd *, struct dwarf2_cu *); |
c906108c | 840 | |
639d11d3 | 841 | static struct die_info *read_die_and_children (char *info_ptr, bfd *abfd, |
e7c27a73 | 842 | struct dwarf2_cu *, |
639d11d3 DC |
843 | char **new_info_ptr, |
844 | struct die_info *parent); | |
845 | ||
846 | static struct die_info *read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 847 | struct dwarf2_cu *, |
639d11d3 DC |
848 | char **new_info_ptr, |
849 | struct die_info *parent); | |
850 | ||
a14ed312 | 851 | static void free_die_list (struct die_info *); |
c906108c | 852 | |
74b7792f AC |
853 | static struct cleanup *make_cleanup_free_die_list (struct die_info *); |
854 | ||
e7c27a73 | 855 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 856 | |
e142c38c | 857 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 858 | |
e142c38c | 859 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 860 | |
e142c38c DJ |
861 | static struct die_info *dwarf2_extension (struct die_info *die, |
862 | struct dwarf2_cu *); | |
9219021c | 863 | |
a14ed312 | 864 | static char *dwarf_tag_name (unsigned int); |
c906108c | 865 | |
a14ed312 | 866 | static char *dwarf_attr_name (unsigned int); |
c906108c | 867 | |
a14ed312 | 868 | static char *dwarf_form_name (unsigned int); |
c906108c | 869 | |
a14ed312 | 870 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 871 | |
a14ed312 | 872 | static char *dwarf_bool_name (unsigned int); |
c906108c | 873 | |
a14ed312 | 874 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
875 | |
876 | #if 0 | |
a14ed312 | 877 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 878 | |
a14ed312 | 879 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
880 | #endif |
881 | ||
f9aca02d | 882 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 883 | |
f9aca02d | 884 | static void dump_die (struct die_info *); |
c906108c | 885 | |
f9aca02d | 886 | static void dump_die_list (struct die_info *); |
c906108c | 887 | |
f9aca02d | 888 | static void store_in_ref_table (unsigned int, struct die_info *); |
c906108c | 889 | |
7f0e3f52 | 890 | static void dwarf2_empty_hash_tables (void); |
c906108c | 891 | |
e142c38c DJ |
892 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
893 | struct dwarf2_cu *); | |
c906108c | 894 | |
a02abb62 JB |
895 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
896 | ||
f9aca02d | 897 | static struct die_info *follow_die_ref (unsigned int); |
c906108c | 898 | |
e142c38c DJ |
899 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
900 | struct dwarf2_cu *); | |
c906108c SS |
901 | |
902 | /* memory allocation interface */ | |
903 | ||
4efb68b1 | 904 | static void dwarf2_free_tmp_obstack (void *); |
c906108c | 905 | |
a14ed312 | 906 | static struct dwarf_block *dwarf_alloc_block (void); |
c906108c | 907 | |
a14ed312 | 908 | static struct abbrev_info *dwarf_alloc_abbrev (void); |
c906108c | 909 | |
a14ed312 | 910 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 911 | |
e142c38c | 912 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 913 | |
e142c38c DJ |
914 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
915 | struct dwarf2_cu *); | |
5fb290d7 | 916 | |
2e276125 | 917 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 918 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 919 | |
8e19ed76 PS |
920 | static int attr_form_is_block (struct attribute *); |
921 | ||
4c2df51b DJ |
922 | static void |
923 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 924 | struct dwarf2_cu *cu); |
4c2df51b | 925 | |
c906108c SS |
926 | /* Try to locate the sections we need for DWARF 2 debugging |
927 | information and return true if we have enough to do something. */ | |
928 | ||
929 | int | |
fba45db2 | 930 | dwarf2_has_info (bfd *abfd) |
c906108c | 931 | { |
188dd5d6 DJ |
932 | dwarf_info_section = 0; |
933 | dwarf_abbrev_section = 0; | |
934 | dwarf_line_section = 0; | |
935 | dwarf_str_section = 0; | |
936 | dwarf_macinfo_section = 0; | |
937 | dwarf_frame_section = 0; | |
938 | dwarf_eh_frame_section = 0; | |
939 | dwarf_ranges_section = 0; | |
940 | dwarf_loc_section = 0; | |
af34e669 | 941 | |
c906108c | 942 | bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 943 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
944 | } |
945 | ||
946 | /* This function is mapped across the sections and remembers the | |
947 | offset and size of each of the debugging sections we are interested | |
948 | in. */ | |
949 | ||
950 | static void | |
4efb68b1 | 951 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 952 | { |
6314a349 | 953 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 954 | { |
c906108c | 955 | dwarf_info_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 956 | dwarf_info_section = sectp; |
c906108c | 957 | } |
6314a349 | 958 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 959 | { |
c906108c | 960 | dwarf_abbrev_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 961 | dwarf_abbrev_section = sectp; |
c906108c | 962 | } |
6314a349 | 963 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 964 | { |
c906108c | 965 | dwarf_line_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 966 | dwarf_line_section = sectp; |
c906108c | 967 | } |
6314a349 | 968 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 969 | { |
c906108c | 970 | dwarf_pubnames_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 971 | dwarf_pubnames_section = sectp; |
c906108c | 972 | } |
6314a349 | 973 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 974 | { |
c906108c | 975 | dwarf_aranges_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 976 | dwarf_aranges_section = sectp; |
c906108c | 977 | } |
6314a349 | 978 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 979 | { |
c906108c | 980 | dwarf_loc_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 981 | dwarf_loc_section = sectp; |
c906108c | 982 | } |
6314a349 | 983 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 984 | { |
c906108c | 985 | dwarf_macinfo_size = bfd_get_section_size_before_reloc (sectp); |
0cf824c9 | 986 | dwarf_macinfo_section = sectp; |
c906108c | 987 | } |
6314a349 | 988 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 989 | { |
c906108c | 990 | dwarf_str_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 991 | dwarf_str_section = sectp; |
c906108c | 992 | } |
6314a349 | 993 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 994 | { |
b6af0555 | 995 | dwarf_frame_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 996 | dwarf_frame_section = sectp; |
b6af0555 | 997 | } |
6314a349 | 998 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 999 | { |
3799ccc6 EZ |
1000 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1001 | if (aflag & SEC_HAS_CONTENTS) | |
1002 | { | |
3799ccc6 EZ |
1003 | dwarf_eh_frame_size = bfd_get_section_size_before_reloc (sectp); |
1004 | dwarf_eh_frame_section = sectp; | |
1005 | } | |
b6af0555 | 1006 | } |
6314a349 | 1007 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1008 | { |
af34e669 | 1009 | dwarf_ranges_size = bfd_get_section_size_before_reloc (sectp); |
6f10aeb1 | 1010 | dwarf_ranges_section = sectp; |
af34e669 | 1011 | } |
c906108c SS |
1012 | } |
1013 | ||
1014 | /* Build a partial symbol table. */ | |
1015 | ||
1016 | void | |
fba45db2 | 1017 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c SS |
1018 | { |
1019 | ||
1020 | /* We definitely need the .debug_info and .debug_abbrev sections */ | |
1021 | ||
188dd5d6 DJ |
1022 | dwarf_info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1023 | dwarf_abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
1024 | ||
1025 | if (dwarf_line_section) | |
1026 | dwarf_line_buffer = dwarf2_read_section (objfile, dwarf_line_section); | |
41ff2da1 DC |
1027 | else |
1028 | dwarf_line_buffer = NULL; | |
c906108c | 1029 | |
188dd5d6 DJ |
1030 | if (dwarf_str_section) |
1031 | dwarf_str_buffer = dwarf2_read_section (objfile, dwarf_str_section); | |
4bdf3d34 JJ |
1032 | else |
1033 | dwarf_str_buffer = NULL; | |
1034 | ||
188dd5d6 | 1035 | if (dwarf_macinfo_section) |
2e276125 | 1036 | dwarf_macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1037 | dwarf_macinfo_section); |
2e276125 JB |
1038 | else |
1039 | dwarf_macinfo_buffer = NULL; | |
1040 | ||
188dd5d6 DJ |
1041 | if (dwarf_ranges_section) |
1042 | dwarf_ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); | |
af34e669 DJ |
1043 | else |
1044 | dwarf_ranges_buffer = NULL; | |
1045 | ||
188dd5d6 DJ |
1046 | if (dwarf_loc_section) |
1047 | dwarf_loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); | |
0d53c4c4 DJ |
1048 | else |
1049 | dwarf_loc_buffer = NULL; | |
1050 | ||
ef96bde8 EZ |
1051 | if (mainline |
1052 | || (objfile->global_psymbols.size == 0 | |
1053 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1054 | { |
1055 | init_psymbol_list (objfile, 1024); | |
1056 | } | |
1057 | ||
1058 | #if 0 | |
1059 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1060 | { | |
d4f3574e | 1061 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1062 | .debug_pubnames sections */ |
1063 | ||
d4f3574e | 1064 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1065 | } |
1066 | else | |
1067 | #endif | |
1068 | /* only test this case for now */ | |
c5aa993b | 1069 | { |
c906108c | 1070 | /* In this case we have to work a bit harder */ |
d4f3574e | 1071 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1072 | } |
1073 | } | |
1074 | ||
1075 | #if 0 | |
1076 | /* Build the partial symbol table from the information in the | |
1077 | .debug_pubnames and .debug_aranges sections. */ | |
1078 | ||
1079 | static void | |
fba45db2 | 1080 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1081 | { |
1082 | bfd *abfd = objfile->obfd; | |
1083 | char *aranges_buffer, *pubnames_buffer; | |
1084 | char *aranges_ptr, *pubnames_ptr; | |
1085 | unsigned int entry_length, version, info_offset, info_size; | |
1086 | ||
1087 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1088 | dwarf_pubnames_section); |
c906108c SS |
1089 | pubnames_ptr = pubnames_buffer; |
1090 | while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size) | |
1091 | { | |
613e1657 KB |
1092 | struct comp_unit_head cu_header; |
1093 | int bytes_read; | |
1094 | ||
1095 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
1096 | &bytes_read); | |
1097 | pubnames_ptr += bytes_read; | |
c906108c SS |
1098 | version = read_1_byte (abfd, pubnames_ptr); |
1099 | pubnames_ptr += 1; | |
1100 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1101 | pubnames_ptr += 4; | |
1102 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1103 | pubnames_ptr += 4; | |
1104 | } | |
1105 | ||
1106 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1107 | dwarf_aranges_section); |
c906108c SS |
1108 | |
1109 | } | |
1110 | #endif | |
1111 | ||
107d2387 AC |
1112 | /* Read in the comp unit header information from the debug_info at |
1113 | info_ptr. */ | |
1114 | ||
1115 | static char * | |
1116 | read_comp_unit_head (struct comp_unit_head *cu_header, | |
1117 | char *info_ptr, bfd *abfd) | |
1118 | { | |
1119 | int signed_addr; | |
613e1657 KB |
1120 | int bytes_read; |
1121 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, | |
1122 | &bytes_read); | |
1123 | info_ptr += bytes_read; | |
107d2387 AC |
1124 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1125 | info_ptr += 2; | |
613e1657 KB |
1126 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1127 | &bytes_read); | |
1128 | info_ptr += bytes_read; | |
107d2387 AC |
1129 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1130 | info_ptr += 1; | |
1131 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1132 | if (signed_addr < 0) | |
8e65ff28 AC |
1133 | internal_error (__FILE__, __LINE__, |
1134 | "read_comp_unit_head: dwarf from non elf file"); | |
107d2387 AC |
1135 | cu_header->signed_addr_p = signed_addr; |
1136 | return info_ptr; | |
1137 | } | |
1138 | ||
c906108c SS |
1139 | /* Build the partial symbol table by doing a quick pass through the |
1140 | .debug_info and .debug_abbrev sections. */ | |
1141 | ||
1142 | static void | |
fba45db2 | 1143 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1144 | { |
1145 | /* Instead of reading this into a big buffer, we should probably use | |
1146 | mmap() on architectures that support it. (FIXME) */ | |
1147 | bfd *abfd = objfile->obfd; | |
1148 | char *info_ptr, *abbrev_ptr; | |
1149 | char *beg_of_comp_unit; | |
c906108c SS |
1150 | struct partial_die_info comp_unit_die; |
1151 | struct partial_symtab *pst; | |
1152 | struct cleanup *back_to; | |
e142c38c | 1153 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1154 | |
c906108c SS |
1155 | info_ptr = dwarf_info_buffer; |
1156 | abbrev_ptr = dwarf_abbrev_buffer; | |
1157 | ||
9e84cbde JB |
1158 | /* We use dwarf2_tmp_obstack for objects that don't need to survive |
1159 | the partial symbol scan, like attribute values. | |
1160 | ||
1161 | We could reduce our peak memory consumption during partial symbol | |
1162 | table construction by freeing stuff from this obstack more often | |
1163 | --- say, after processing each compilation unit, or each die --- | |
1164 | but it turns out that this saves almost nothing. For an | |
1165 | executable with 11Mb of Dwarf 2 data, I found about 64k allocated | |
1166 | on dwarf2_tmp_obstack. Some investigation showed: | |
1167 | ||
1168 | 1) 69% of the attributes used forms DW_FORM_addr, DW_FORM_data*, | |
1169 | DW_FORM_flag, DW_FORM_[su]data, and DW_FORM_ref*. These are | |
1170 | all fixed-length values not requiring dynamic allocation. | |
1171 | ||
1172 | 2) 30% of the attributes used the form DW_FORM_string. For | |
1173 | DW_FORM_string, read_attribute simply hands back a pointer to | |
1174 | the null-terminated string in dwarf_info_buffer, so no dynamic | |
1175 | allocation is needed there either. | |
1176 | ||
1177 | 3) The remaining 1% of the attributes all used DW_FORM_block1. | |
1178 | 75% of those were DW_AT_frame_base location lists for | |
1179 | functions; the rest were DW_AT_location attributes, probably | |
1180 | for the global variables. | |
1181 | ||
1182 | Anyway, what this all means is that the memory the dwarf2 | |
1183 | reader uses as temporary space reading partial symbols is about | |
1184 | 0.5% as much as we use for dwarf_*_buffer. That's noise. */ | |
1185 | ||
c906108c SS |
1186 | obstack_init (&dwarf2_tmp_obstack); |
1187 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1188 | ||
af703f96 JB |
1189 | /* Since the objects we're extracting from dwarf_info_buffer vary in |
1190 | length, only the individual functions to extract them (like | |
1191 | read_comp_unit_head and read_partial_die) can really know whether | |
1192 | the buffer is large enough to hold another complete object. | |
1193 | ||
1194 | At the moment, they don't actually check that. If | |
1195 | dwarf_info_buffer holds just one extra byte after the last | |
1196 | compilation unit's dies, then read_comp_unit_head will happily | |
1197 | read off the end of the buffer. read_partial_die is similarly | |
1198 | casual. Those functions should be fixed. | |
1199 | ||
1200 | For this loop condition, simply checking whether there's any data | |
1201 | left at all should be sufficient. */ | |
2541c7cf | 1202 | while (info_ptr < dwarf_info_buffer + dwarf_info_size) |
c906108c | 1203 | { |
e7c27a73 | 1204 | struct dwarf2_cu cu; |
c906108c | 1205 | beg_of_comp_unit = info_ptr; |
c906108c | 1206 | |
e7c27a73 DJ |
1207 | cu.objfile = objfile; |
1208 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); | |
1209 | ||
1210 | if (cu.header.version != 2) | |
c906108c | 1211 | { |
e7c27a73 | 1212 | 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 |
1213 | return; |
1214 | } | |
e7c27a73 | 1215 | if (cu.header.abbrev_offset >= dwarf_abbrev_size) |
c906108c | 1216 | { |
659b0389 | 1217 | error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6) [in module %s]", |
e7c27a73 | 1218 | (long) cu.header.abbrev_offset, |
659b0389 ML |
1219 | (long) (beg_of_comp_unit - dwarf_info_buffer), |
1220 | bfd_get_filename (abfd)); | |
c906108c SS |
1221 | return; |
1222 | } | |
e7c27a73 | 1223 | if (beg_of_comp_unit + cu.header.length + cu.header.initial_length_size |
c906108c SS |
1224 | > dwarf_info_buffer + dwarf_info_size) |
1225 | { | |
659b0389 | 1226 | error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0) [in module %s]", |
e7c27a73 | 1227 | (long) cu.header.length, |
659b0389 ML |
1228 | (long) (beg_of_comp_unit - dwarf_info_buffer), |
1229 | bfd_get_filename (abfd)); | |
c906108c SS |
1230 | return; |
1231 | } | |
57349743 | 1232 | /* Complete the cu_header */ |
e7c27a73 DJ |
1233 | cu.header.offset = beg_of_comp_unit - dwarf_info_buffer; |
1234 | cu.header.first_die_ptr = info_ptr; | |
1235 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1236 | |
e142c38c DJ |
1237 | cu.list_in_scope = &file_symbols; |
1238 | ||
c906108c | 1239 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 DJ |
1240 | dwarf2_read_abbrevs (abfd, &cu); |
1241 | make_cleanup (dwarf2_empty_abbrev_table, cu.header.dwarf2_abbrevs); | |
c906108c SS |
1242 | |
1243 | /* Read the compilation unit die */ | |
107d2387 | 1244 | info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr, |
e7c27a73 | 1245 | &cu); |
c906108c SS |
1246 | |
1247 | /* Set the language we're debugging */ | |
e142c38c | 1248 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1249 | |
1250 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1251 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1252 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1253 | comp_unit_die.lowpc, |
1254 | objfile->global_psymbols.next, | |
1255 | objfile->static_psymbols.next); | |
1256 | ||
1257 | pst->read_symtab_private = (char *) | |
8b92e4d5 | 1258 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct dwarf2_pinfo)); |
c5aa993b JM |
1259 | DWARF_INFO_BUFFER (pst) = dwarf_info_buffer; |
1260 | DWARF_INFO_OFFSET (pst) = beg_of_comp_unit - dwarf_info_buffer; | |
1261 | DWARF_ABBREV_BUFFER (pst) = dwarf_abbrev_buffer; | |
1262 | DWARF_ABBREV_SIZE (pst) = dwarf_abbrev_size; | |
1263 | DWARF_LINE_BUFFER (pst) = dwarf_line_buffer; | |
9ab3e532 | 1264 | DWARF_LINE_SIZE (pst) = dwarf_line_size; |
4bdf3d34 JJ |
1265 | DWARF_STR_BUFFER (pst) = dwarf_str_buffer; |
1266 | DWARF_STR_SIZE (pst) = dwarf_str_size; | |
2e276125 JB |
1267 | DWARF_MACINFO_BUFFER (pst) = dwarf_macinfo_buffer; |
1268 | DWARF_MACINFO_SIZE (pst) = dwarf_macinfo_size; | |
af34e669 DJ |
1269 | DWARF_RANGES_BUFFER (pst) = dwarf_ranges_buffer; |
1270 | DWARF_RANGES_SIZE (pst) = dwarf_ranges_size; | |
0d53c4c4 DJ |
1271 | DWARF_LOC_BUFFER (pst) = dwarf_loc_buffer; |
1272 | DWARF_LOC_SIZE (pst) = dwarf_loc_size; | |
613e1657 | 1273 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1274 | |
1275 | /* Store the function that reads in the rest of the symbol table */ | |
1276 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1277 | ||
1278 | /* Check if comp unit has_children. | |
1279 | If so, read the rest of the partial symbols from this comp unit. | |
1280 | If not, there's no more debug_info for this comp unit. */ | |
1281 | if (comp_unit_die.has_children) | |
1282 | { | |
91c24f0a DC |
1283 | lowpc = ((CORE_ADDR) -1); |
1284 | highpc = ((CORE_ADDR) 0); | |
1285 | ||
e7c27a73 DJ |
1286 | info_ptr = scan_partial_symbols (info_ptr, &lowpc, &highpc, |
1287 | &cu, NULL); | |
c906108c | 1288 | |
91c24f0a DC |
1289 | /* If we didn't find a lowpc, set it to highpc to avoid |
1290 | complaints from `maint check'. */ | |
1291 | if (lowpc == ((CORE_ADDR) -1)) | |
1292 | lowpc = highpc; | |
1293 | ||
c906108c SS |
1294 | /* If the compilation unit didn't have an explicit address range, |
1295 | then use the information extracted from its child dies. */ | |
0b010bcc | 1296 | if (! comp_unit_die.has_pc_info) |
c906108c | 1297 | { |
c5aa993b | 1298 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1299 | comp_unit_die.highpc = highpc; |
1300 | } | |
1301 | } | |
c5aa993b | 1302 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1303 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1304 | ||
1305 | pst->n_global_syms = objfile->global_psymbols.next - | |
1306 | (objfile->global_psymbols.list + pst->globals_offset); | |
1307 | pst->n_static_syms = objfile->static_psymbols.next - | |
1308 | (objfile->static_psymbols.list + pst->statics_offset); | |
1309 | sort_pst_symbols (pst); | |
1310 | ||
1311 | /* If there is already a psymtab or symtab for a file of this | |
1312 | name, remove it. (If there is a symtab, more drastic things | |
1313 | also happen.) This happens in VxWorks. */ | |
1314 | free_named_symtabs (pst->filename); | |
1315 | ||
e7c27a73 DJ |
1316 | info_ptr = beg_of_comp_unit + cu.header.length |
1317 | + cu.header.initial_length_size; | |
c906108c SS |
1318 | } |
1319 | do_cleanups (back_to); | |
1320 | } | |
1321 | ||
91c24f0a | 1322 | /* Read in all interesting dies to the end of the compilation unit or |
5c4e30ca DC |
1323 | to the end of the current namespace. NAMESPACE is NULL if we |
1324 | haven't yet encountered any DW_TAG_namespace entries; otherwise, | |
1325 | it's the name of the current namespace. In particular, it's the | |
1326 | empty string if we're currently in the global namespace but have | |
1327 | previously encountered a DW_TAG_namespace. */ | |
c906108c SS |
1328 | |
1329 | static char * | |
e7c27a73 DJ |
1330 | scan_partial_symbols (char *info_ptr, CORE_ADDR *lowpc, |
1331 | CORE_ADDR *highpc, struct dwarf2_cu *cu, | |
5c4e30ca | 1332 | const char *namespace) |
c906108c | 1333 | { |
e7c27a73 | 1334 | struct objfile *objfile = cu->objfile; |
c906108c SS |
1335 | bfd *abfd = objfile->obfd; |
1336 | struct partial_die_info pdi; | |
1337 | ||
91c24f0a DC |
1338 | /* Now, march along the PDI's, descending into ones which have |
1339 | interesting children but skipping the children of the other ones, | |
1340 | until we reach the end of the compilation unit. */ | |
c906108c | 1341 | |
91c24f0a | 1342 | while (1) |
c906108c | 1343 | { |
91c24f0a DC |
1344 | /* This flag tells whether or not info_ptr has gotten updated |
1345 | inside the loop. */ | |
1346 | int info_ptr_updated = 0; | |
1347 | ||
e7c27a73 | 1348 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
c906108c | 1349 | |
91c24f0a DC |
1350 | /* Anonymous namespaces have no name but have interesting |
1351 | children, so we need to look at them. Ditto for anonymous | |
1352 | enums. */ | |
933c6fe4 | 1353 | |
91c24f0a DC |
1354 | if (pdi.name != NULL || pdi.tag == DW_TAG_namespace |
1355 | || pdi.tag == DW_TAG_enumeration_type) | |
c906108c SS |
1356 | { |
1357 | switch (pdi.tag) | |
1358 | { | |
1359 | case DW_TAG_subprogram: | |
0b010bcc | 1360 | if (pdi.has_pc_info) |
c906108c SS |
1361 | { |
1362 | if (pdi.lowpc < *lowpc) | |
1363 | { | |
1364 | *lowpc = pdi.lowpc; | |
1365 | } | |
1366 | if (pdi.highpc > *highpc) | |
1367 | { | |
1368 | *highpc = pdi.highpc; | |
1369 | } | |
91c24f0a | 1370 | if (!pdi.is_declaration) |
c906108c | 1371 | { |
e7c27a73 | 1372 | add_partial_symbol (&pdi, cu, namespace); |
c906108c SS |
1373 | } |
1374 | } | |
1375 | break; | |
1376 | case DW_TAG_variable: | |
1377 | case DW_TAG_typedef: | |
91c24f0a | 1378 | case DW_TAG_union_type: |
63d06c5c DC |
1379 | if (!pdi.is_declaration) |
1380 | { | |
1381 | add_partial_symbol (&pdi, cu, namespace); | |
1382 | } | |
1383 | break; | |
c906108c SS |
1384 | case DW_TAG_class_type: |
1385 | case DW_TAG_structure_type: | |
91c24f0a | 1386 | if (!pdi.is_declaration) |
c906108c | 1387 | { |
63d06c5c DC |
1388 | info_ptr = add_partial_structure (&pdi, info_ptr, cu, |
1389 | namespace); | |
1390 | info_ptr_updated = 1; | |
c906108c SS |
1391 | } |
1392 | break; | |
91c24f0a DC |
1393 | case DW_TAG_enumeration_type: |
1394 | if (!pdi.is_declaration) | |
1395 | { | |
e7c27a73 | 1396 | info_ptr = add_partial_enumeration (&pdi, info_ptr, cu, |
5c4e30ca | 1397 | namespace); |
91c24f0a DC |
1398 | info_ptr_updated = 1; |
1399 | } | |
c906108c SS |
1400 | break; |
1401 | case DW_TAG_base_type: | |
a02abb62 | 1402 | case DW_TAG_subrange_type: |
c906108c | 1403 | /* File scope base type definitions are added to the partial |
c5aa993b | 1404 | symbol table. */ |
e7c27a73 | 1405 | add_partial_symbol (&pdi, cu, namespace); |
c906108c | 1406 | break; |
d9fa45fe | 1407 | case DW_TAG_namespace: |
5c4e30ca DC |
1408 | /* We've hit a DW_TAG_namespace entry, so we know this |
1409 | file has been compiled using a compiler that | |
1410 | generates them; update NAMESPACE to reflect that. */ | |
1411 | if (namespace == NULL) | |
1412 | namespace = ""; | |
e7c27a73 DJ |
1413 | info_ptr = add_partial_namespace (&pdi, info_ptr, lowpc, highpc, |
1414 | cu, namespace); | |
91c24f0a DC |
1415 | info_ptr_updated = 1; |
1416 | break; | |
c906108c SS |
1417 | default: |
1418 | break; | |
1419 | } | |
1420 | } | |
1421 | ||
c906108c | 1422 | if (pdi.tag == 0) |
91c24f0a DC |
1423 | break; |
1424 | ||
1425 | /* If the die has a sibling, skip to the sibling, unless another | |
1426 | function has already updated info_ptr for us. */ | |
1427 | ||
1428 | /* NOTE: carlton/2003-06-16: This is a bit hackish, but whether | |
1429 | or not we want to update this depends on enough stuff (not | |
1430 | only pdi.tag but also whether or not pdi.name is NULL) that | |
1431 | this seems like the easiest way to handle the issue. */ | |
1432 | ||
1433 | if (!info_ptr_updated) | |
e7c27a73 | 1434 | info_ptr = locate_pdi_sibling (&pdi, info_ptr, abfd, cu); |
c906108c SS |
1435 | } |
1436 | ||
c906108c SS |
1437 | return info_ptr; |
1438 | } | |
1439 | ||
1440 | static void | |
e7c27a73 DJ |
1441 | add_partial_symbol (struct partial_die_info *pdi, |
1442 | struct dwarf2_cu *cu, const char *namespace) | |
c906108c | 1443 | { |
e7c27a73 | 1444 | struct objfile *objfile = cu->objfile; |
c906108c | 1445 | CORE_ADDR addr = 0; |
38d518c9 | 1446 | char *actual_name = pdi->name; |
5c4e30ca | 1447 | const struct partial_symbol *psym = NULL; |
e142c38c DJ |
1448 | CORE_ADDR baseaddr; |
1449 | ||
1450 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1451 | |
63d06c5c DC |
1452 | /* If we're not in the global namespace and if the namespace name |
1453 | isn't encoded in a mangled actual_name, add it. */ | |
1454 | ||
1455 | if (pdi_needs_namespace (pdi->tag, namespace)) | |
1456 | { | |
1457 | actual_name = alloca (strlen (pdi->name) + 2 + strlen (namespace) + 1); | |
1458 | strcpy (actual_name, namespace); | |
1459 | strcat (actual_name, "::"); | |
1460 | strcat (actual_name, pdi->name); | |
1461 | } | |
1462 | ||
c906108c SS |
1463 | switch (pdi->tag) |
1464 | { | |
1465 | case DW_TAG_subprogram: | |
1466 | if (pdi->is_external) | |
1467 | { | |
38d518c9 | 1468 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1469 | mst_text, objfile); */ |
38d518c9 | 1470 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1471 | VAR_DOMAIN, LOC_BLOCK, |
1472 | &objfile->global_psymbols, | |
1473 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1474 | cu->language, objfile); |
c906108c SS |
1475 | } |
1476 | else | |
1477 | { | |
38d518c9 | 1478 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1479 | mst_file_text, objfile); */ |
38d518c9 | 1480 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1481 | VAR_DOMAIN, LOC_BLOCK, |
1482 | &objfile->static_psymbols, | |
1483 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1484 | cu->language, objfile); |
c906108c SS |
1485 | } |
1486 | break; | |
1487 | case DW_TAG_variable: | |
1488 | if (pdi->is_external) | |
1489 | { | |
1490 | /* Global Variable. | |
1491 | Don't enter into the minimal symbol tables as there is | |
1492 | a minimal symbol table entry from the ELF symbols already. | |
1493 | Enter into partial symbol table if it has a location | |
1494 | descriptor or a type. | |
1495 | If the location descriptor is missing, new_symbol will create | |
1496 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1497 | be determined from the minimal symbol table whenever the variable | |
1498 | is referenced. | |
1499 | The address for the partial symbol table entry is not | |
1500 | used by GDB, but it comes in handy for debugging partial symbol | |
1501 | table building. */ | |
1502 | ||
1503 | if (pdi->locdesc) | |
e7c27a73 | 1504 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1505 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1506 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1507 | VAR_DOMAIN, LOC_STATIC, |
1508 | &objfile->global_psymbols, | |
1509 | 0, addr + baseaddr, | |
e142c38c | 1510 | cu->language, objfile); |
c906108c SS |
1511 | } |
1512 | else | |
1513 | { | |
1514 | /* Static Variable. Skip symbols without location descriptors. */ | |
1515 | if (pdi->locdesc == NULL) | |
1516 | return; | |
e7c27a73 | 1517 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1518 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1519 | mst_file_data, objfile); */ |
38d518c9 | 1520 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1521 | VAR_DOMAIN, LOC_STATIC, |
1522 | &objfile->static_psymbols, | |
1523 | 0, addr + baseaddr, | |
e142c38c | 1524 | cu->language, objfile); |
c906108c SS |
1525 | } |
1526 | break; | |
1527 | case DW_TAG_typedef: | |
1528 | case DW_TAG_base_type: | |
a02abb62 | 1529 | case DW_TAG_subrange_type: |
38d518c9 | 1530 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1531 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1532 | &objfile->static_psymbols, |
e142c38c | 1533 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1534 | break; |
1535 | case DW_TAG_class_type: | |
1536 | case DW_TAG_structure_type: | |
1537 | case DW_TAG_union_type: | |
1538 | case DW_TAG_enumeration_type: | |
1539 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1540 | references. */ |
63d06c5c DC |
1541 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1542 | static vs. global. */ | |
c906108c SS |
1543 | if (pdi->has_children == 0) |
1544 | return; | |
38d518c9 | 1545 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1546 | STRUCT_DOMAIN, LOC_TYPEDEF, |
e142c38c | 1547 | cu->language == language_cplus |
63d06c5c DC |
1548 | ? &objfile->global_psymbols |
1549 | : &objfile->static_psymbols, | |
e142c38c | 1550 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1551 | |
e142c38c | 1552 | if (cu->language == language_cplus) |
c906108c SS |
1553 | { |
1554 | /* For C++, these implicitly act as typedefs as well. */ | |
38d518c9 | 1555 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1556 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1557 | &objfile->global_psymbols, |
e142c38c | 1558 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1559 | } |
1560 | break; | |
1561 | case DW_TAG_enumerator: | |
38d518c9 | 1562 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1563 | VAR_DOMAIN, LOC_CONST, |
e142c38c | 1564 | cu->language == language_cplus |
63d06c5c DC |
1565 | ? &objfile->static_psymbols |
1566 | : &objfile->global_psymbols, | |
e142c38c | 1567 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1568 | break; |
1569 | default: | |
1570 | break; | |
1571 | } | |
5c4e30ca DC |
1572 | |
1573 | /* Check to see if we should scan the name for possible namespace | |
1574 | info. Only do this if this is C++, if we don't have namespace | |
1575 | debugging info in the file, if the psym is of an appropriate type | |
1576 | (otherwise we'll have psym == NULL), and if we actually had a | |
1577 | mangled name to begin with. */ | |
1578 | ||
e142c38c | 1579 | if (cu->language == language_cplus |
5c4e30ca DC |
1580 | && namespace == NULL |
1581 | && psym != NULL | |
1582 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
1583 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
1584 | objfile); | |
c906108c SS |
1585 | } |
1586 | ||
63d06c5c DC |
1587 | /* Determine whether a die of type TAG living in the C++ namespace |
1588 | NAMESPACE needs to have the name of the namespace prepended to the | |
1589 | name listed in the die. */ | |
1590 | ||
1591 | static int | |
1592 | pdi_needs_namespace (enum dwarf_tag tag, const char *namespace) | |
1593 | { | |
1594 | if (namespace == NULL || namespace[0] == '\0') | |
1595 | return 0; | |
1596 | ||
1597 | switch (tag) | |
1598 | { | |
1599 | case DW_TAG_typedef: | |
1600 | case DW_TAG_class_type: | |
1601 | case DW_TAG_structure_type: | |
1602 | case DW_TAG_union_type: | |
1603 | case DW_TAG_enumeration_type: | |
1604 | case DW_TAG_enumerator: | |
1605 | return 1; | |
1606 | default: | |
1607 | return 0; | |
1608 | } | |
1609 | } | |
1610 | ||
5c4e30ca DC |
1611 | /* Read a partial die corresponding to a namespace; also, add a symbol |
1612 | corresponding to that namespace to the symbol table. NAMESPACE is | |
1613 | the name of the enclosing namespace. */ | |
91c24f0a DC |
1614 | |
1615 | static char * | |
1616 | add_partial_namespace (struct partial_die_info *pdi, char *info_ptr, | |
91c24f0a | 1617 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 1618 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1619 | { |
e7c27a73 | 1620 | struct objfile *objfile = cu->objfile; |
5c4e30ca DC |
1621 | const char *new_name = pdi->name; |
1622 | char *full_name; | |
1623 | ||
e7c27a73 DJ |
1624 | /* Calculate the full name of the namespace that we just entered. */ |
1625 | ||
5c4e30ca DC |
1626 | if (new_name == NULL) |
1627 | new_name = "(anonymous namespace)"; | |
1628 | full_name = alloca (strlen (namespace) + 2 + strlen (new_name) + 1); | |
1629 | strcpy (full_name, namespace); | |
1630 | if (*namespace != '\0') | |
1631 | strcat (full_name, "::"); | |
1632 | strcat (full_name, new_name); | |
1633 | ||
63d06c5c DC |
1634 | /* FIXME: carlton/2003-10-07: We can't just replace this by a call |
1635 | to add_partial_symbol, because we don't have a way to pass in the | |
1636 | full name to that function; that might be a flaw in | |
1637 | add_partial_symbol's interface. */ | |
5c4e30ca DC |
1638 | |
1639 | add_psymbol_to_list (full_name, strlen (full_name), | |
1640 | VAR_DOMAIN, LOC_TYPEDEF, | |
1641 | &objfile->global_psymbols, | |
e142c38c | 1642 | 0, 0, cu->language, objfile); |
5c4e30ca DC |
1643 | |
1644 | /* Now scan partial symbols in that namespace. */ | |
1645 | ||
91c24f0a | 1646 | if (pdi->has_children) |
e7c27a73 | 1647 | info_ptr = scan_partial_symbols (info_ptr, lowpc, highpc, cu, full_name); |
91c24f0a DC |
1648 | |
1649 | return info_ptr; | |
1650 | } | |
1651 | ||
63d06c5c DC |
1652 | /* Read a partial die corresponding to a class or structure. */ |
1653 | ||
1654 | static char * | |
1655 | add_partial_structure (struct partial_die_info *struct_pdi, char *info_ptr, | |
1656 | struct dwarf2_cu *cu, | |
1657 | const char *namespace) | |
1658 | { | |
1659 | bfd *abfd = cu->objfile->obfd; | |
1660 | char *actual_class_name = NULL; | |
1661 | ||
e142c38c | 1662 | if (cu->language == language_cplus |
5d51ca54 | 1663 | && (namespace == NULL || namespace[0] == '\0') |
63d06c5c DC |
1664 | && struct_pdi->name != NULL |
1665 | && struct_pdi->has_children) | |
1666 | { | |
5d51ca54 DC |
1667 | /* See if we can figure out if the class lives in a namespace |
1668 | (or is nested within another class.) We do this by looking | |
63d06c5c DC |
1669 | for a member function; its demangled name will contain |
1670 | namespace info, if there is any. */ | |
1671 | ||
1672 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
1673 | what template types look like, because the demangler | |
1674 | frequently doesn't give the same name as the debug info. We | |
1675 | could fix this by only using the demangled name to get the | |
1676 | prefix (but see comment in read_structure_scope). */ | |
1677 | ||
5d51ca54 DC |
1678 | /* FIXME: carlton/2004-01-23: If NAMESPACE equals "", we have |
1679 | the appropriate debug information, so it would be nice to be | |
1680 | able to avoid this hack. But NAMESPACE may not be the | |
1681 | namespace where this class was defined: NAMESPACE reflects | |
1682 | where STRUCT_PDI occurs in the tree of dies, but because of | |
1683 | DW_AT_specification, that may not actually tell us where the | |
1684 | class is defined. (See the comment in read_func_scope for an | |
1685 | example of how this could occur.) | |
1686 | ||
1687 | Unfortunately, our current partial symtab data structures are | |
1688 | completely unable to deal with DW_AT_specification. So, for | |
1689 | now, the best thing to do is to get nesting information from | |
1690 | places other than the tree structure of dies if there's any | |
1691 | chance that a DW_AT_specification is involved. :-( */ | |
1692 | ||
63d06c5c DC |
1693 | char *next_child = info_ptr; |
1694 | ||
1695 | while (1) | |
1696 | { | |
1697 | struct partial_die_info child_pdi; | |
1698 | ||
1699 | next_child = read_partial_die (&child_pdi, abfd, next_child, | |
1700 | cu); | |
1701 | if (!child_pdi.tag) | |
1702 | break; | |
1703 | if (child_pdi.tag == DW_TAG_subprogram) | |
1704 | { | |
1705 | actual_class_name = class_name_from_physname (child_pdi.name); | |
1706 | if (actual_class_name != NULL) | |
1707 | struct_pdi->name = actual_class_name; | |
1708 | break; | |
1709 | } | |
1710 | else | |
1711 | { | |
1712 | next_child = locate_pdi_sibling (&child_pdi, next_child, | |
1713 | abfd, cu); | |
1714 | } | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | add_partial_symbol (struct_pdi, cu, namespace); | |
e142c38c | 1719 | xfree (actual_class_name); |
63d06c5c DC |
1720 | |
1721 | return locate_pdi_sibling (struct_pdi, info_ptr, abfd, cu); | |
1722 | } | |
1723 | ||
91c24f0a DC |
1724 | /* Read a partial die corresponding to an enumeration type. */ |
1725 | ||
1726 | static char * | |
1727 | add_partial_enumeration (struct partial_die_info *enum_pdi, char *info_ptr, | |
e7c27a73 | 1728 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1729 | { |
e7c27a73 | 1730 | struct objfile *objfile = cu->objfile; |
91c24f0a DC |
1731 | bfd *abfd = objfile->obfd; |
1732 | struct partial_die_info pdi; | |
1733 | ||
1734 | if (enum_pdi->name != NULL) | |
e7c27a73 | 1735 | add_partial_symbol (enum_pdi, cu, namespace); |
91c24f0a DC |
1736 | |
1737 | while (1) | |
1738 | { | |
e7c27a73 | 1739 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
91c24f0a DC |
1740 | if (pdi.tag == 0) |
1741 | break; | |
1742 | if (pdi.tag != DW_TAG_enumerator || pdi.name == NULL) | |
1743 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); | |
1744 | else | |
e7c27a73 | 1745 | add_partial_symbol (&pdi, cu, namespace); |
91c24f0a DC |
1746 | } |
1747 | ||
1748 | return info_ptr; | |
1749 | } | |
1750 | ||
1751 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the next DIE | |
1752 | after ORIG_PDI. */ | |
1753 | ||
1754 | static char * | |
1755 | locate_pdi_sibling (struct partial_die_info *orig_pdi, char *info_ptr, | |
e7c27a73 | 1756 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
1757 | { |
1758 | /* Do we know the sibling already? */ | |
1759 | ||
1760 | if (orig_pdi->sibling) | |
1761 | return orig_pdi->sibling; | |
1762 | ||
1763 | /* Are there any children to deal with? */ | |
1764 | ||
1765 | if (!orig_pdi->has_children) | |
1766 | return info_ptr; | |
1767 | ||
1768 | /* Okay, we don't know the sibling, but we have children that we | |
1769 | want to skip. So read children until we run into one without a | |
1770 | tag; return whatever follows it. */ | |
1771 | ||
1772 | while (1) | |
1773 | { | |
1774 | struct partial_die_info pdi; | |
1775 | ||
e7c27a73 | 1776 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
91c24f0a DC |
1777 | |
1778 | if (pdi.tag == 0) | |
1779 | return info_ptr; | |
1780 | else | |
e7c27a73 | 1781 | info_ptr = locate_pdi_sibling (&pdi, info_ptr, abfd, cu); |
91c24f0a DC |
1782 | } |
1783 | } | |
1784 | ||
c906108c SS |
1785 | /* Expand this partial symbol table into a full symbol table. */ |
1786 | ||
1787 | static void | |
fba45db2 | 1788 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1789 | { |
1790 | /* FIXME: This is barely more than a stub. */ | |
1791 | if (pst != NULL) | |
1792 | { | |
1793 | if (pst->readin) | |
1794 | { | |
1795 | warning ("bug: psymtab for %s is already read in.", pst->filename); | |
1796 | } | |
1797 | else | |
1798 | { | |
1799 | if (info_verbose) | |
1800 | { | |
1801 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1802 | gdb_flush (gdb_stdout); | |
1803 | } | |
1804 | ||
1805 | psymtab_to_symtab_1 (pst); | |
1806 | ||
1807 | /* Finish up the debug error message. */ | |
1808 | if (info_verbose) | |
1809 | printf_filtered ("done.\n"); | |
1810 | } | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | static void | |
fba45db2 | 1815 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1816 | { |
1817 | struct objfile *objfile = pst->objfile; | |
1818 | bfd *abfd = objfile->obfd; | |
e7c27a73 | 1819 | struct dwarf2_cu cu; |
c906108c SS |
1820 | struct die_info *dies; |
1821 | unsigned long offset; | |
1822 | CORE_ADDR lowpc, highpc; | |
1823 | struct die_info *child_die; | |
1824 | char *info_ptr; | |
1825 | struct symtab *symtab; | |
1826 | struct cleanup *back_to; | |
0d53c4c4 | 1827 | struct attribute *attr; |
e142c38c | 1828 | CORE_ADDR baseaddr; |
c906108c SS |
1829 | |
1830 | /* Set local variables from the partial symbol table info. */ | |
c5aa993b JM |
1831 | offset = DWARF_INFO_OFFSET (pst); |
1832 | dwarf_info_buffer = DWARF_INFO_BUFFER (pst); | |
1833 | dwarf_abbrev_buffer = DWARF_ABBREV_BUFFER (pst); | |
1834 | dwarf_abbrev_size = DWARF_ABBREV_SIZE (pst); | |
1835 | dwarf_line_buffer = DWARF_LINE_BUFFER (pst); | |
9ab3e532 | 1836 | dwarf_line_size = DWARF_LINE_SIZE (pst); |
4bdf3d34 JJ |
1837 | dwarf_str_buffer = DWARF_STR_BUFFER (pst); |
1838 | dwarf_str_size = DWARF_STR_SIZE (pst); | |
2e276125 JB |
1839 | dwarf_macinfo_buffer = DWARF_MACINFO_BUFFER (pst); |
1840 | dwarf_macinfo_size = DWARF_MACINFO_SIZE (pst); | |
af34e669 DJ |
1841 | dwarf_ranges_buffer = DWARF_RANGES_BUFFER (pst); |
1842 | dwarf_ranges_size = DWARF_RANGES_SIZE (pst); | |
0d53c4c4 DJ |
1843 | dwarf_loc_buffer = DWARF_LOC_BUFFER (pst); |
1844 | dwarf_loc_size = DWARF_LOC_SIZE (pst); | |
c906108c | 1845 | info_ptr = dwarf_info_buffer + offset; |
e142c38c | 1846 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 1847 | |
63d06c5c DC |
1848 | /* We're in the global namespace. */ |
1849 | processing_current_prefix = ""; | |
1850 | ||
c906108c SS |
1851 | obstack_init (&dwarf2_tmp_obstack); |
1852 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1853 | ||
1854 | buildsym_init (); | |
a0b3c4fd | 1855 | make_cleanup (really_free_pendings, NULL); |
c906108c | 1856 | |
e7c27a73 DJ |
1857 | cu.objfile = objfile; |
1858 | ||
c906108c | 1859 | /* read in the comp_unit header */ |
e7c27a73 | 1860 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); |
c906108c SS |
1861 | |
1862 | /* Read the abbrevs for this compilation unit */ | |
e7c27a73 DJ |
1863 | dwarf2_read_abbrevs (abfd, &cu); |
1864 | make_cleanup (dwarf2_empty_abbrev_table, cu.header.dwarf2_abbrevs); | |
c906108c | 1865 | |
e142c38c DJ |
1866 | cu.header.offset = offset; |
1867 | ||
1868 | cu.list_in_scope = &file_symbols; | |
1869 | ||
e7c27a73 | 1870 | dies = read_comp_unit (info_ptr, abfd, &cu); |
c906108c | 1871 | |
74b7792f | 1872 | make_cleanup_free_die_list (dies); |
c906108c | 1873 | |
0d53c4c4 DJ |
1874 | /* Find the base address of the compilation unit for range lists and |
1875 | location lists. It will normally be specified by DW_AT_low_pc. | |
1876 | In DWARF-3 draft 4, the base address could be overridden by | |
1877 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
1878 | compilation units with discontinuous ranges. */ | |
1879 | ||
e7c27a73 DJ |
1880 | cu.header.base_known = 0; |
1881 | cu.header.base_address = 0; | |
0d53c4c4 | 1882 | |
e142c38c | 1883 | attr = dwarf2_attr (dies, DW_AT_entry_pc, &cu); |
0d53c4c4 DJ |
1884 | if (attr) |
1885 | { | |
e7c27a73 DJ |
1886 | cu.header.base_address = DW_ADDR (attr); |
1887 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
1888 | } |
1889 | else | |
1890 | { | |
e142c38c | 1891 | attr = dwarf2_attr (dies, DW_AT_low_pc, &cu); |
0d53c4c4 DJ |
1892 | if (attr) |
1893 | { | |
e7c27a73 DJ |
1894 | cu.header.base_address = DW_ADDR (attr); |
1895 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
1896 | } |
1897 | } | |
1898 | ||
c906108c | 1899 | /* Do line number decoding in read_file_scope () */ |
e7c27a73 | 1900 | process_die (dies, &cu); |
c906108c | 1901 | |
fae299cd DC |
1902 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
1903 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
1904 | it, by scanning the DIE's below the compilation unit. */ | |
1905 | get_scope_pc_bounds (dies, &lowpc, &highpc, &cu); | |
c906108c | 1906 | |
613e1657 | 1907 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1908 | |
1909 | /* Set symtab language to language from DW_AT_language. | |
1910 | If the compilation is from a C file generated by language preprocessors, | |
1911 | do not set the language if it was already deduced by start_subfile. */ | |
1912 | if (symtab != NULL | |
e142c38c | 1913 | && !(cu.language == language_c && symtab->language != language_c)) |
c906108c | 1914 | { |
e142c38c | 1915 | symtab->language = cu.language; |
c906108c SS |
1916 | } |
1917 | pst->symtab = symtab; | |
1918 | pst->readin = 1; | |
c906108c SS |
1919 | |
1920 | do_cleanups (back_to); | |
1921 | } | |
1922 | ||
1923 | /* Process a die and its children. */ | |
1924 | ||
1925 | static void | |
e7c27a73 | 1926 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
1927 | { |
1928 | switch (die->tag) | |
1929 | { | |
1930 | case DW_TAG_padding: | |
1931 | break; | |
1932 | case DW_TAG_compile_unit: | |
e7c27a73 | 1933 | read_file_scope (die, cu); |
c906108c SS |
1934 | break; |
1935 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
1936 | read_subroutine_type (die, cu); |
1937 | read_func_scope (die, cu); | |
c906108c SS |
1938 | break; |
1939 | case DW_TAG_inlined_subroutine: | |
1940 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
1941 | They could be used to set breakpoints on all inlined instances |
1942 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
1943 | break; |
1944 | case DW_TAG_lexical_block: | |
14898363 L |
1945 | case DW_TAG_try_block: |
1946 | case DW_TAG_catch_block: | |
e7c27a73 | 1947 | read_lexical_block_scope (die, cu); |
c906108c SS |
1948 | break; |
1949 | case DW_TAG_class_type: | |
1950 | case DW_TAG_structure_type: | |
1951 | case DW_TAG_union_type: | |
e7c27a73 | 1952 | read_structure_scope (die, cu); |
c906108c SS |
1953 | break; |
1954 | case DW_TAG_enumeration_type: | |
e7c27a73 | 1955 | read_enumeration (die, cu); |
c906108c SS |
1956 | break; |
1957 | case DW_TAG_subroutine_type: | |
e7c27a73 | 1958 | read_subroutine_type (die, cu); |
c906108c SS |
1959 | break; |
1960 | case DW_TAG_array_type: | |
e7c27a73 | 1961 | read_array_type (die, cu); |
c906108c SS |
1962 | break; |
1963 | case DW_TAG_pointer_type: | |
e7c27a73 | 1964 | read_tag_pointer_type (die, cu); |
c906108c SS |
1965 | break; |
1966 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 1967 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
1968 | break; |
1969 | case DW_TAG_reference_type: | |
e7c27a73 | 1970 | read_tag_reference_type (die, cu); |
c906108c SS |
1971 | break; |
1972 | case DW_TAG_string_type: | |
e7c27a73 | 1973 | read_tag_string_type (die, cu); |
c906108c SS |
1974 | break; |
1975 | case DW_TAG_base_type: | |
e7c27a73 | 1976 | read_base_type (die, cu); |
e142c38c | 1977 | if (dwarf2_attr (die, DW_AT_name, cu)) |
c906108c SS |
1978 | { |
1979 | /* Add a typedef symbol for the base type definition. */ | |
e7c27a73 | 1980 | new_symbol (die, die->type, cu); |
c906108c SS |
1981 | } |
1982 | break; | |
a02abb62 JB |
1983 | case DW_TAG_subrange_type: |
1984 | read_subrange_type (die, cu); | |
e142c38c | 1985 | if (dwarf2_attr (die, DW_AT_name, cu)) |
a02abb62 JB |
1986 | { |
1987 | /* Add a typedef symbol for the base type definition. */ | |
1988 | new_symbol (die, die->type, cu); | |
1989 | } | |
1990 | break; | |
c906108c | 1991 | case DW_TAG_common_block: |
e7c27a73 | 1992 | read_common_block (die, cu); |
c906108c SS |
1993 | break; |
1994 | case DW_TAG_common_inclusion: | |
1995 | break; | |
d9fa45fe | 1996 | case DW_TAG_namespace: |
63d06c5c | 1997 | processing_has_namespace_info = 1; |
e7c27a73 | 1998 | read_namespace (die, cu); |
d9fa45fe DC |
1999 | break; |
2000 | case DW_TAG_imported_declaration: | |
2001 | case DW_TAG_imported_module: | |
2002 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2003 | information contained in these. DW_TAG_imported_declaration | |
2004 | dies shouldn't have children; DW_TAG_imported_module dies | |
2005 | shouldn't in the C++ case, but conceivably could in the | |
2006 | Fortran case, so we'll have to replace this gdb_assert if | |
2007 | Fortran compilers start generating that info. */ | |
63d06c5c | 2008 | processing_has_namespace_info = 1; |
639d11d3 | 2009 | gdb_assert (die->child == NULL); |
d9fa45fe | 2010 | break; |
c906108c | 2011 | default: |
e7c27a73 | 2012 | new_symbol (die, NULL, cu); |
c906108c SS |
2013 | break; |
2014 | } | |
2015 | } | |
2016 | ||
5fb290d7 | 2017 | static void |
e142c38c | 2018 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2019 | { |
e142c38c | 2020 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2021 | } |
2022 | ||
c906108c | 2023 | static void |
e7c27a73 | 2024 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2025 | { |
e7c27a73 DJ |
2026 | struct objfile *objfile = cu->objfile; |
2027 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2028 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2029 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2030 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2031 | struct attribute *attr; | |
2032 | char *name = "<unknown>"; | |
2033 | char *comp_dir = NULL; | |
2034 | struct die_info *child_die; | |
2035 | bfd *abfd = objfile->obfd; | |
debd256d | 2036 | struct line_header *line_header = 0; |
e142c38c DJ |
2037 | CORE_ADDR baseaddr; |
2038 | ||
2039 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2040 | |
fae299cd | 2041 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2042 | |
2043 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2044 | from finish_block. */ | |
2acceee2 | 2045 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2046 | lowpc = highpc; |
2047 | lowpc += baseaddr; | |
2048 | highpc += baseaddr; | |
2049 | ||
e142c38c | 2050 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2051 | if (attr) |
2052 | { | |
2053 | name = DW_STRING (attr); | |
2054 | } | |
e142c38c | 2055 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2056 | if (attr) |
2057 | { | |
2058 | comp_dir = DW_STRING (attr); | |
2059 | if (comp_dir) | |
2060 | { | |
2061 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2062 | directory, get rid of it. */ | |
2063 | char *cp = strchr (comp_dir, ':'); | |
2064 | ||
2065 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2066 | comp_dir = cp + 1; | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | if (objfile->ei.entry_point >= lowpc && | |
2071 | objfile->ei.entry_point < highpc) | |
2072 | { | |
627b3ba2 AC |
2073 | objfile->ei.deprecated_entry_file_lowpc = lowpc; |
2074 | objfile->ei.deprecated_entry_file_highpc = highpc; | |
c906108c SS |
2075 | } |
2076 | ||
e142c38c | 2077 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2078 | if (attr) |
2079 | { | |
e142c38c | 2080 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2081 | } |
2082 | ||
2083 | /* We assume that we're processing GCC output. */ | |
2084 | processing_gcc_compilation = 2; | |
2085 | #if 0 | |
c5aa993b JM |
2086 | /* FIXME:Do something here. */ |
2087 | if (dip->at_producer != NULL) | |
c906108c SS |
2088 | { |
2089 | handle_producer (dip->at_producer); | |
2090 | } | |
2091 | #endif | |
2092 | ||
2093 | /* The compilation unit may be in a different language or objfile, | |
2094 | zero out all remembered fundamental types. */ | |
e142c38c | 2095 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2096 | |
2097 | start_symtab (name, comp_dir, lowpc); | |
2098 | record_debugformat ("DWARF 2"); | |
2099 | ||
e142c38c | 2100 | initialize_cu_func_list (cu); |
c906108c SS |
2101 | |
2102 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2103 | if (die->child != NULL) |
c906108c | 2104 | { |
639d11d3 | 2105 | child_die = die->child; |
c906108c SS |
2106 | while (child_die && child_die->tag) |
2107 | { | |
e7c27a73 | 2108 | process_die (child_die, cu); |
c906108c SS |
2109 | child_die = sibling_die (child_die); |
2110 | } | |
2111 | } | |
5fb290d7 DJ |
2112 | |
2113 | /* Decode line number information if present. */ | |
e142c38c | 2114 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2115 | if (attr) |
2116 | { | |
debd256d | 2117 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2118 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2119 | if (line_header) |
2120 | { | |
2121 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2122 | (void *) line_header); | |
e7c27a73 | 2123 | dwarf_decode_lines (line_header, comp_dir, abfd, cu); |
debd256d | 2124 | } |
5fb290d7 | 2125 | } |
debd256d | 2126 | |
2e276125 JB |
2127 | /* Decode macro information, if present. Dwarf 2 macro information |
2128 | refers to information in the line number info statement program | |
2129 | header, so we can only read it if we've read the header | |
2130 | successfully. */ | |
e142c38c | 2131 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2132 | if (attr && line_header) |
2e276125 JB |
2133 | { |
2134 | unsigned int macro_offset = DW_UNSND (attr); | |
2135 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2136 | comp_dir, abfd, cu); |
2e276125 | 2137 | } |
debd256d | 2138 | do_cleanups (back_to); |
5fb290d7 DJ |
2139 | } |
2140 | ||
2141 | static void | |
e142c38c DJ |
2142 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2143 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2144 | { |
2145 | struct function_range *thisfn; | |
2146 | ||
2147 | thisfn = (struct function_range *) | |
2148 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct function_range)); | |
2149 | thisfn->name = name; | |
2150 | thisfn->lowpc = lowpc; | |
2151 | thisfn->highpc = highpc; | |
2152 | thisfn->seen_line = 0; | |
2153 | thisfn->next = NULL; | |
2154 | ||
e142c38c DJ |
2155 | if (cu->last_fn == NULL) |
2156 | cu->first_fn = thisfn; | |
5fb290d7 | 2157 | else |
e142c38c | 2158 | cu->last_fn->next = thisfn; |
5fb290d7 | 2159 | |
e142c38c | 2160 | cu->last_fn = thisfn; |
c906108c SS |
2161 | } |
2162 | ||
2163 | static void | |
e7c27a73 | 2164 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2165 | { |
e7c27a73 | 2166 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2167 | struct context_stack *new; |
c906108c SS |
2168 | CORE_ADDR lowpc; |
2169 | CORE_ADDR highpc; | |
2170 | struct die_info *child_die; | |
2171 | struct attribute *attr; | |
2172 | char *name; | |
fdde2d81 DC |
2173 | const char *previous_prefix = processing_current_prefix; |
2174 | struct cleanup *back_to = NULL; | |
e142c38c | 2175 | CORE_ADDR baseaddr; |
c906108c | 2176 | |
e142c38c DJ |
2177 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2178 | ||
2179 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2180 | |
2181 | /* Ignore functions with missing or empty names and functions with | |
2182 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2183 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2184 | return; |
2185 | ||
086ed43d | 2186 | if (cu->language == language_cplus) |
fdde2d81 | 2187 | { |
086ed43d | 2188 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2189 | |
2a35147e JB |
2190 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2191 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2192 | given the code | |
2193 | ||
2194 | namespace N { | |
2195 | void foo() { | |
2196 | // Definition of N::foo. | |
2197 | } | |
2198 | } | |
2199 | ||
2200 | then we'll have a tree of DIEs like this: | |
2201 | ||
2202 | 1: DW_TAG_compile_unit | |
2203 | 2: DW_TAG_namespace // N | |
2204 | 3: DW_TAG_subprogram // declaration of N::foo | |
2205 | 4: DW_TAG_subprogram // definition of N::foo | |
2206 | DW_AT_specification // refers to die #3 | |
2207 | ||
2208 | Thus, when processing die #4, we have to pretend that we're | |
2209 | in the context of its DW_AT_specification, namely the contex | |
2210 | of die #3. */ | |
fdde2d81 DC |
2211 | |
2212 | if (spec_die != NULL) | |
2213 | { | |
e142c38c | 2214 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2215 | processing_current_prefix = specification_prefix; |
2216 | back_to = make_cleanup (xfree, specification_prefix); | |
2217 | } | |
2218 | } | |
2219 | ||
c906108c SS |
2220 | lowpc += baseaddr; |
2221 | highpc += baseaddr; | |
2222 | ||
5fb290d7 | 2223 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2224 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2225 | |
c906108c SS |
2226 | if (objfile->ei.entry_point >= lowpc && |
2227 | objfile->ei.entry_point < highpc) | |
2228 | { | |
2229 | objfile->ei.entry_func_lowpc = lowpc; | |
2230 | objfile->ei.entry_func_highpc = highpc; | |
2231 | } | |
2232 | ||
c906108c | 2233 | new = push_context (0, lowpc); |
e7c27a73 | 2234 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2235 | |
4cecd739 DJ |
2236 | /* If there is a location expression for DW_AT_frame_base, record |
2237 | it. */ | |
e142c38c | 2238 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2239 | if (attr) |
c034e007 AC |
2240 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2241 | expression is being recorded directly in the function's symbol | |
2242 | and not in a separate frame-base object. I guess this hack is | |
2243 | to avoid adding some sort of frame-base adjunct/annex to the | |
2244 | function's symbol :-(. The problem with doing this is that it | |
2245 | results in a function symbol with a location expression that | |
2246 | has nothing to do with the location of the function, ouch! The | |
2247 | relationship should be: a function's symbol has-a frame base; a | |
2248 | frame-base has-a location expression. */ | |
e7c27a73 | 2249 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2250 | |
e142c38c | 2251 | cu->list_in_scope = &local_symbols; |
c906108c | 2252 | |
639d11d3 | 2253 | if (die->child != NULL) |
c906108c | 2254 | { |
639d11d3 | 2255 | child_die = die->child; |
c906108c SS |
2256 | while (child_die && child_die->tag) |
2257 | { | |
e7c27a73 | 2258 | process_die (child_die, cu); |
c906108c SS |
2259 | child_die = sibling_die (child_die); |
2260 | } | |
2261 | } | |
2262 | ||
2263 | new = pop_context (); | |
2264 | /* Make a block for the local symbols within. */ | |
2265 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2266 | lowpc, highpc, objfile); | |
208d8187 JB |
2267 | |
2268 | /* In C++, we can have functions nested inside functions (e.g., when | |
2269 | a function declares a class that has methods). This means that | |
2270 | when we finish processing a function scope, we may need to go | |
2271 | back to building a containing block's symbol lists. */ | |
2272 | local_symbols = new->locals; | |
2273 | param_symbols = new->params; | |
2274 | ||
921e78cf JB |
2275 | /* If we've finished processing a top-level function, subsequent |
2276 | symbols go in the file symbol list. */ | |
2277 | if (outermost_context_p ()) | |
e142c38c | 2278 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2279 | |
2280 | processing_current_prefix = previous_prefix; | |
2281 | if (back_to != NULL) | |
2282 | do_cleanups (back_to); | |
c906108c SS |
2283 | } |
2284 | ||
2285 | /* Process all the DIES contained within a lexical block scope. Start | |
2286 | a new scope, process the dies, and then close the scope. */ | |
2287 | ||
2288 | static void | |
e7c27a73 | 2289 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2290 | { |
e7c27a73 | 2291 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2292 | struct context_stack *new; |
c906108c SS |
2293 | CORE_ADDR lowpc, highpc; |
2294 | struct die_info *child_die; | |
e142c38c DJ |
2295 | CORE_ADDR baseaddr; |
2296 | ||
2297 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2298 | |
2299 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
2300 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
2301 | as multiple lexical blocks? Handling children in a sane way would | |
2302 | be nasty. Might be easier to properly extend generic blocks to | |
2303 | describe ranges. */ | |
e7c27a73 | 2304 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2305 | return; |
2306 | lowpc += baseaddr; | |
2307 | highpc += baseaddr; | |
2308 | ||
2309 | push_context (0, lowpc); | |
639d11d3 | 2310 | if (die->child != NULL) |
c906108c | 2311 | { |
639d11d3 | 2312 | child_die = die->child; |
c906108c SS |
2313 | while (child_die && child_die->tag) |
2314 | { | |
e7c27a73 | 2315 | process_die (child_die, cu); |
c906108c SS |
2316 | child_die = sibling_die (child_die); |
2317 | } | |
2318 | } | |
2319 | new = pop_context (); | |
2320 | ||
2321 | if (local_symbols != NULL) | |
2322 | { | |
2323 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
2324 | highpc, objfile); | |
2325 | } | |
2326 | local_symbols = new->locals; | |
2327 | } | |
2328 | ||
af34e669 DJ |
2329 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
2330 | are present and valid, otherwise, return 0. Return -1 if the range is | |
2331 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 2332 | static int |
af34e669 | 2333 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 2334 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 2335 | { |
e7c27a73 DJ |
2336 | struct objfile *objfile = cu->objfile; |
2337 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 2338 | struct attribute *attr; |
af34e669 DJ |
2339 | bfd *obfd = objfile->obfd; |
2340 | CORE_ADDR low = 0; | |
2341 | CORE_ADDR high = 0; | |
2342 | int ret = 0; | |
c906108c | 2343 | |
e142c38c | 2344 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 2345 | if (attr) |
af34e669 DJ |
2346 | { |
2347 | high = DW_ADDR (attr); | |
e142c38c | 2348 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
2349 | if (attr) |
2350 | low = DW_ADDR (attr); | |
2351 | else | |
2352 | /* Found high w/o low attribute. */ | |
2353 | return 0; | |
2354 | ||
2355 | /* Found consecutive range of addresses. */ | |
2356 | ret = 1; | |
2357 | } | |
c906108c | 2358 | else |
af34e669 | 2359 | { |
e142c38c | 2360 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
2361 | if (attr != NULL) |
2362 | { | |
2363 | unsigned int addr_size = cu_header->addr_size; | |
2364 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
2365 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 2366 | .debug_ranges section. */ |
af34e669 DJ |
2367 | unsigned int offset = DW_UNSND (attr); |
2368 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
2369 | CORE_ADDR base; |
2370 | int found_base; | |
af34e669 | 2371 | int dummy; |
af34e669 DJ |
2372 | char *buffer; |
2373 | CORE_ADDR marker; | |
2374 | int low_set; | |
2375 | ||
0d53c4c4 DJ |
2376 | found_base = cu_header->base_known; |
2377 | base = cu_header->base_address; | |
a604369a KB |
2378 | |
2379 | if (offset >= dwarf_ranges_size) | |
2380 | { | |
2381 | complaint (&symfile_complaints, | |
2382 | "Offset %d out of bounds for DW_AT_ranges attribute", | |
2383 | offset); | |
2384 | return 0; | |
2385 | } | |
af34e669 DJ |
2386 | buffer = dwarf_ranges_buffer + offset; |
2387 | ||
af34e669 | 2388 | /* Read in the largest possible address. */ |
e7c27a73 | 2389 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2390 | if ((marker & mask) == mask) |
2391 | { | |
2392 | /* If we found the largest possible address, then | |
2393 | read the base address. */ | |
e7c27a73 | 2394 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2395 | buffer += 2 * addr_size; |
2396 | offset += 2 * addr_size; | |
2397 | found_base = 1; | |
2398 | } | |
2399 | ||
2400 | low_set = 0; | |
2401 | ||
2402 | while (1) | |
2403 | { | |
2404 | CORE_ADDR range_beginning, range_end; | |
2405 | ||
e7c27a73 | 2406 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 2407 | buffer += addr_size; |
e7c27a73 | 2408 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2409 | buffer += addr_size; |
2410 | offset += 2 * addr_size; | |
2411 | ||
2412 | /* An end of list marker is a pair of zero addresses. */ | |
2413 | if (range_beginning == 0 && range_end == 0) | |
2414 | /* Found the end of list entry. */ | |
2415 | break; | |
2416 | ||
2417 | /* Each base address selection entry is a pair of 2 values. | |
2418 | The first is the largest possible address, the second is | |
2419 | the base address. Check for a base address here. */ | |
2420 | if ((range_beginning & mask) == mask) | |
2421 | { | |
2422 | /* If we found the largest possible address, then | |
2423 | read the base address. */ | |
e7c27a73 | 2424 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2425 | found_base = 1; |
2426 | continue; | |
2427 | } | |
2428 | ||
2429 | if (!found_base) | |
2430 | { | |
2431 | /* We have no valid base address for the ranges | |
2432 | data. */ | |
2433 | complaint (&symfile_complaints, | |
2434 | "Invalid .debug_ranges data (no base address)"); | |
2435 | return 0; | |
2436 | } | |
2437 | ||
8f05cde5 DJ |
2438 | range_beginning += base; |
2439 | range_end += base; | |
2440 | ||
af34e669 DJ |
2441 | /* FIXME: This is recording everything as a low-high |
2442 | segment of consecutive addresses. We should have a | |
2443 | data structure for discontiguous block ranges | |
2444 | instead. */ | |
2445 | if (! low_set) | |
2446 | { | |
2447 | low = range_beginning; | |
2448 | high = range_end; | |
2449 | low_set = 1; | |
2450 | } | |
2451 | else | |
2452 | { | |
2453 | if (range_beginning < low) | |
2454 | low = range_beginning; | |
2455 | if (range_end > high) | |
2456 | high = range_end; | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | if (! low_set) | |
2461 | /* If the first entry is an end-of-list marker, the range | |
2462 | describes an empty scope, i.e. no instructions. */ | |
2463 | return 0; | |
2464 | ||
2465 | ret = -1; | |
2466 | } | |
2467 | } | |
c906108c SS |
2468 | |
2469 | if (high < low) | |
2470 | return 0; | |
2471 | ||
2472 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
2473 | eliminate duplicate copies of functions and vtables and such. | |
2474 | The linker will arbitrarily choose one and discard the others. | |
2475 | The AT_*_pc values for such functions refer to local labels in | |
2476 | these sections. If the section from that file was discarded, the | |
2477 | labels are not in the output, so the relocs get a value of 0. | |
2478 | If this is a discarded function, mark the pc bounds as invalid, | |
2479 | so that GDB will ignore it. */ | |
af34e669 | 2480 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
2481 | return 0; |
2482 | ||
2483 | *lowpc = low; | |
2484 | *highpc = high; | |
af34e669 | 2485 | return ret; |
c906108c SS |
2486 | } |
2487 | ||
fae299cd DC |
2488 | /* Get the low and high pc's represented by the scope DIE, and store |
2489 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
2490 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
2491 | ||
2492 | static void | |
2493 | get_scope_pc_bounds (struct die_info *die, | |
2494 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
2495 | struct dwarf2_cu *cu) | |
2496 | { | |
2497 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
2498 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
2499 | CORE_ADDR current_low, current_high; | |
2500 | ||
2501 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
2502 | { | |
2503 | best_low = current_low; | |
2504 | best_high = current_high; | |
2505 | } | |
2506 | else | |
2507 | { | |
2508 | struct die_info *child = die->child; | |
2509 | ||
2510 | while (child && child->tag) | |
2511 | { | |
2512 | switch (child->tag) { | |
2513 | case DW_TAG_subprogram: | |
2514 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
2515 | { | |
2516 | best_low = min (best_low, current_low); | |
2517 | best_high = max (best_high, current_high); | |
2518 | } | |
2519 | break; | |
2520 | case DW_TAG_namespace: | |
2521 | /* FIXME: carlton/2004-01-16: Should we do this for | |
2522 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
2523 | that current GCC's always emit the DIEs corresponding | |
2524 | to definitions of methods of classes as children of a | |
2525 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
2526 | the DIEs giving the declarations, which could be | |
2527 | anywhere). But I don't see any reason why the | |
2528 | standards says that they have to be there. */ | |
2529 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
2530 | ||
2531 | if (current_low != ((CORE_ADDR) -1)) | |
2532 | { | |
2533 | best_low = min (best_low, current_low); | |
2534 | best_high = max (best_high, current_high); | |
2535 | } | |
2536 | break; | |
2537 | default: | |
2538 | /* Ignore. */ | |
2539 | break; | |
2540 | } | |
2541 | ||
2542 | child = sibling_die (child); | |
2543 | } | |
2544 | } | |
2545 | ||
2546 | *lowpc = best_low; | |
2547 | *highpc = best_high; | |
2548 | } | |
2549 | ||
c906108c SS |
2550 | /* Add an aggregate field to the field list. */ |
2551 | ||
2552 | static void | |
107d2387 | 2553 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
2554 | struct dwarf2_cu *cu) |
2555 | { | |
2556 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
2557 | struct nextfield *new_field; |
2558 | struct attribute *attr; | |
2559 | struct field *fp; | |
2560 | char *fieldname = ""; | |
2561 | ||
2562 | /* Allocate a new field list entry and link it in. */ | |
2563 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2564 | make_cleanup (xfree, new_field); |
c906108c SS |
2565 | memset (new_field, 0, sizeof (struct nextfield)); |
2566 | new_field->next = fip->fields; | |
2567 | fip->fields = new_field; | |
2568 | fip->nfields++; | |
2569 | ||
2570 | /* Handle accessibility and virtuality of field. | |
2571 | The default accessibility for members is public, the default | |
2572 | accessibility for inheritance is private. */ | |
2573 | if (die->tag != DW_TAG_inheritance) | |
2574 | new_field->accessibility = DW_ACCESS_public; | |
2575 | else | |
2576 | new_field->accessibility = DW_ACCESS_private; | |
2577 | new_field->virtuality = DW_VIRTUALITY_none; | |
2578 | ||
e142c38c | 2579 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2580 | if (attr) |
2581 | new_field->accessibility = DW_UNSND (attr); | |
2582 | if (new_field->accessibility != DW_ACCESS_public) | |
2583 | fip->non_public_fields = 1; | |
e142c38c | 2584 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
2585 | if (attr) |
2586 | new_field->virtuality = DW_UNSND (attr); | |
2587 | ||
2588 | fp = &new_field->field; | |
a9a9bd0f | 2589 | |
e142c38c | 2590 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 2591 | { |
a9a9bd0f DC |
2592 | /* Data member other than a C++ static data member. */ |
2593 | ||
c906108c | 2594 | /* Get type of field. */ |
e7c27a73 | 2595 | fp->type = die_type (die, cu); |
c906108c | 2596 | |
01ad7f36 DJ |
2597 | FIELD_STATIC_KIND (*fp) = 0; |
2598 | ||
c906108c | 2599 | /* Get bit size of field (zero if none). */ |
e142c38c | 2600 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
2601 | if (attr) |
2602 | { | |
2603 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
2604 | } | |
2605 | else | |
2606 | { | |
2607 | FIELD_BITSIZE (*fp) = 0; | |
2608 | } | |
2609 | ||
2610 | /* Get bit offset of field. */ | |
e142c38c | 2611 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
2612 | if (attr) |
2613 | { | |
2614 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 2615 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
2616 | } |
2617 | else | |
2618 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 2619 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
2620 | if (attr) |
2621 | { | |
2622 | if (BITS_BIG_ENDIAN) | |
2623 | { | |
2624 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
2625 | additional bit offset from the MSB of the containing |
2626 | anonymous object to the MSB of the field. We don't | |
2627 | have to do anything special since we don't need to | |
2628 | know the size of the anonymous object. */ | |
c906108c SS |
2629 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
2630 | } | |
2631 | else | |
2632 | { | |
2633 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
2634 | MSB of the anonymous object, subtract off the number of |
2635 | bits from the MSB of the field to the MSB of the | |
2636 | object, and then subtract off the number of bits of | |
2637 | the field itself. The result is the bit offset of | |
2638 | the LSB of the field. */ | |
c906108c SS |
2639 | int anonymous_size; |
2640 | int bit_offset = DW_UNSND (attr); | |
2641 | ||
e142c38c | 2642 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
2643 | if (attr) |
2644 | { | |
2645 | /* The size of the anonymous object containing | |
2646 | the bit field is explicit, so use the | |
2647 | indicated size (in bytes). */ | |
2648 | anonymous_size = DW_UNSND (attr); | |
2649 | } | |
2650 | else | |
2651 | { | |
2652 | /* The size of the anonymous object containing | |
2653 | the bit field must be inferred from the type | |
2654 | attribute of the data member containing the | |
2655 | bit field. */ | |
2656 | anonymous_size = TYPE_LENGTH (fp->type); | |
2657 | } | |
2658 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
2659 | - bit_offset - FIELD_BITSIZE (*fp); | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | /* Get name of field. */ | |
e142c38c | 2664 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2665 | if (attr && DW_STRING (attr)) |
2666 | fieldname = DW_STRING (attr); | |
2667 | fp->name = obsavestring (fieldname, strlen (fieldname), | |
b99607ea | 2668 | &objfile->objfile_obstack); |
c906108c SS |
2669 | |
2670 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 2671 | pointer or virtual base class pointer) to private. */ |
e142c38c | 2672 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
2673 | { |
2674 | new_field->accessibility = DW_ACCESS_private; | |
2675 | fip->non_public_fields = 1; | |
2676 | } | |
2677 | } | |
a9a9bd0f | 2678 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 2679 | { |
a9a9bd0f DC |
2680 | /* C++ static member. */ |
2681 | ||
2682 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
2683 | is a declaration, but all versions of G++ as of this writing | |
2684 | (so through at least 3.2.1) incorrectly generate | |
2685 | DW_TAG_variable tags. */ | |
2686 | ||
c906108c | 2687 | char *physname; |
c906108c | 2688 | |
a9a9bd0f | 2689 | /* Get name of field. */ |
e142c38c | 2690 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2691 | if (attr && DW_STRING (attr)) |
2692 | fieldname = DW_STRING (attr); | |
2693 | else | |
c906108c SS |
2694 | return; |
2695 | ||
2df3850c | 2696 | /* Get physical name. */ |
e142c38c | 2697 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
2698 | |
2699 | SET_FIELD_PHYSNAME (*fp, obsavestring (physname, strlen (physname), | |
b99607ea | 2700 | &objfile->objfile_obstack)); |
e7c27a73 | 2701 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c | 2702 | FIELD_NAME (*fp) = obsavestring (fieldname, strlen (fieldname), |
b99607ea | 2703 | &objfile->objfile_obstack); |
c906108c SS |
2704 | } |
2705 | else if (die->tag == DW_TAG_inheritance) | |
2706 | { | |
2707 | /* C++ base class field. */ | |
e142c38c | 2708 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 2709 | if (attr) |
e7c27a73 | 2710 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 2711 | * bits_per_byte); |
c906108c | 2712 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 2713 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 2714 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
2715 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
2716 | fip->nbaseclasses++; | |
2717 | } | |
2718 | } | |
2719 | ||
2720 | /* Create the vector of fields, and attach it to the type. */ | |
2721 | ||
2722 | static void | |
fba45db2 | 2723 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 2724 | struct dwarf2_cu *cu) |
c906108c SS |
2725 | { |
2726 | int nfields = fip->nfields; | |
2727 | ||
2728 | /* Record the field count, allocate space for the array of fields, | |
2729 | and create blank accessibility bitfields if necessary. */ | |
2730 | TYPE_NFIELDS (type) = nfields; | |
2731 | TYPE_FIELDS (type) = (struct field *) | |
2732 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2733 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
2734 | ||
2735 | if (fip->non_public_fields) | |
2736 | { | |
2737 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2738 | ||
2739 | TYPE_FIELD_PRIVATE_BITS (type) = | |
2740 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2741 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
2742 | ||
2743 | TYPE_FIELD_PROTECTED_BITS (type) = | |
2744 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2745 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
2746 | ||
2747 | TYPE_FIELD_IGNORE_BITS (type) = | |
2748 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2749 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
2750 | } | |
2751 | ||
2752 | /* If the type has baseclasses, allocate and clear a bit vector for | |
2753 | TYPE_FIELD_VIRTUAL_BITS. */ | |
2754 | if (fip->nbaseclasses) | |
2755 | { | |
2756 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
2757 | char *pointer; | |
2758 | ||
2759 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2760 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
2761 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
2762 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); | |
2763 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
2764 | } | |
2765 | ||
2766 | /* Copy the saved-up fields into the field vector. Start from the head | |
2767 | of the list, adding to the tail of the field array, so that they end | |
2768 | up in the same order in the array in which they were added to the list. */ | |
2769 | while (nfields-- > 0) | |
2770 | { | |
2771 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
2772 | switch (fip->fields->accessibility) | |
2773 | { | |
c5aa993b JM |
2774 | case DW_ACCESS_private: |
2775 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
2776 | break; | |
c906108c | 2777 | |
c5aa993b JM |
2778 | case DW_ACCESS_protected: |
2779 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
2780 | break; | |
c906108c | 2781 | |
c5aa993b JM |
2782 | case DW_ACCESS_public: |
2783 | break; | |
c906108c | 2784 | |
c5aa993b JM |
2785 | default: |
2786 | /* Unknown accessibility. Complain and treat it as public. */ | |
2787 | { | |
4d3c2250 KB |
2788 | complaint (&symfile_complaints, "unsupported accessibility %d", |
2789 | fip->fields->accessibility); | |
c5aa993b JM |
2790 | } |
2791 | break; | |
c906108c SS |
2792 | } |
2793 | if (nfields < fip->nbaseclasses) | |
2794 | { | |
2795 | switch (fip->fields->virtuality) | |
2796 | { | |
c5aa993b JM |
2797 | case DW_VIRTUALITY_virtual: |
2798 | case DW_VIRTUALITY_pure_virtual: | |
2799 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
2800 | break; | |
c906108c SS |
2801 | } |
2802 | } | |
2803 | fip->fields = fip->fields->next; | |
2804 | } | |
2805 | } | |
2806 | ||
c906108c SS |
2807 | /* Add a member function to the proper fieldlist. */ |
2808 | ||
2809 | static void | |
107d2387 | 2810 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 2811 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 2812 | { |
e7c27a73 | 2813 | struct objfile *objfile = cu->objfile; |
c906108c SS |
2814 | struct attribute *attr; |
2815 | struct fnfieldlist *flp; | |
2816 | int i; | |
2817 | struct fn_field *fnp; | |
2818 | char *fieldname; | |
2819 | char *physname; | |
2820 | struct nextfnfield *new_fnfield; | |
2821 | ||
2df3850c | 2822 | /* Get name of member function. */ |
e142c38c | 2823 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2824 | if (attr && DW_STRING (attr)) |
2825 | fieldname = DW_STRING (attr); | |
c906108c | 2826 | else |
2df3850c | 2827 | return; |
c906108c | 2828 | |
2df3850c | 2829 | /* Get the mangled name. */ |
e142c38c | 2830 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
2831 | |
2832 | /* Look up member function name in fieldlist. */ | |
2833 | for (i = 0; i < fip->nfnfields; i++) | |
2834 | { | |
27bfe10e | 2835 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
2836 | break; |
2837 | } | |
2838 | ||
2839 | /* Create new list element if necessary. */ | |
2840 | if (i < fip->nfnfields) | |
2841 | flp = &fip->fnfieldlists[i]; | |
2842 | else | |
2843 | { | |
2844 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
2845 | { | |
2846 | fip->fnfieldlists = (struct fnfieldlist *) | |
2847 | xrealloc (fip->fnfieldlists, | |
2848 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 2849 | * sizeof (struct fnfieldlist)); |
c906108c | 2850 | if (fip->nfnfields == 0) |
c13c43fd | 2851 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
2852 | } |
2853 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
2854 | flp->name = fieldname; | |
2855 | flp->length = 0; | |
2856 | flp->head = NULL; | |
2857 | fip->nfnfields++; | |
2858 | } | |
2859 | ||
2860 | /* Create a new member function field and chain it to the field list | |
2861 | entry. */ | |
2862 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 2863 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
2864 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
2865 | new_fnfield->next = flp->head; | |
2866 | flp->head = new_fnfield; | |
2867 | flp->length++; | |
2868 | ||
2869 | /* Fill in the member function field info. */ | |
2870 | fnp = &new_fnfield->fnfield; | |
2871 | fnp->physname = obsavestring (physname, strlen (physname), | |
b99607ea | 2872 | &objfile->objfile_obstack); |
c906108c SS |
2873 | fnp->type = alloc_type (objfile); |
2874 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
2875 | { | |
c906108c | 2876 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 2877 | |
e26fb1d7 DC |
2878 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
2879 | of the method itself (TYPE_CODE_METHOD). */ | |
2880 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
2881 | TYPE_TARGET_TYPE (die->type), |
2882 | TYPE_FIELDS (die->type), | |
2883 | TYPE_NFIELDS (die->type), | |
2884 | TYPE_VARARGS (die->type)); | |
c906108c SS |
2885 | |
2886 | /* Handle static member functions. | |
c5aa993b JM |
2887 | Dwarf2 has no clean way to discern C++ static and non-static |
2888 | member functions. G++ helps GDB by marking the first | |
2889 | parameter for non-static member functions (which is the | |
2890 | this pointer) as artificial. We obtain this information | |
2891 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
2892 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
2893 | fnp->voffset = VOFFSET_STATIC; | |
2894 | } | |
2895 | else | |
4d3c2250 KB |
2896 | complaint (&symfile_complaints, "member function type missing for '%s'", |
2897 | physname); | |
c906108c SS |
2898 | |
2899 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 2900 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 2901 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
2902 | |
2903 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
2904 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
2905 | ||
2906 | /* Get accessibility. */ | |
e142c38c | 2907 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2908 | if (attr) |
2909 | { | |
2910 | switch (DW_UNSND (attr)) | |
2911 | { | |
c5aa993b JM |
2912 | case DW_ACCESS_private: |
2913 | fnp->is_private = 1; | |
2914 | break; | |
2915 | case DW_ACCESS_protected: | |
2916 | fnp->is_protected = 1; | |
2917 | break; | |
c906108c SS |
2918 | } |
2919 | } | |
2920 | ||
b02dede2 | 2921 | /* Check for artificial methods. */ |
e142c38c | 2922 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
2923 | if (attr && DW_UNSND (attr) != 0) |
2924 | fnp->is_artificial = 1; | |
2925 | ||
c906108c | 2926 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 2927 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 2928 | if (attr) |
8e19ed76 PS |
2929 | { |
2930 | /* Support the .debug_loc offsets */ | |
2931 | if (attr_form_is_block (attr)) | |
2932 | { | |
e7c27a73 | 2933 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
2934 | } |
2935 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
2936 | { | |
4d3c2250 | 2937 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
2938 | } |
2939 | else | |
2940 | { | |
4d3c2250 KB |
2941 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
2942 | fieldname); | |
8e19ed76 PS |
2943 | } |
2944 | } | |
c906108c SS |
2945 | } |
2946 | ||
2947 | /* Create the vector of member function fields, and attach it to the type. */ | |
2948 | ||
2949 | static void | |
fba45db2 | 2950 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 2951 | struct dwarf2_cu *cu) |
c906108c SS |
2952 | { |
2953 | struct fnfieldlist *flp; | |
2954 | int total_length = 0; | |
2955 | int i; | |
2956 | ||
2957 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2958 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2959 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
2960 | ||
2961 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
2962 | { | |
2963 | struct nextfnfield *nfp = flp->head; | |
2964 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
2965 | int k; | |
2966 | ||
2967 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
2968 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
2969 | fn_flp->fn_fields = (struct fn_field *) | |
2970 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
2971 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 2972 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
2973 | |
2974 | total_length += flp->length; | |
2975 | } | |
2976 | ||
2977 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
2978 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2979 | } | |
2980 | ||
2981 | /* Called when we find the DIE that starts a structure or union scope | |
2982 | (definition) to process all dies that define the members of the | |
2983 | structure or union. | |
2984 | ||
2985 | NOTE: we need to call struct_type regardless of whether or not the | |
2986 | DIE has an at_name attribute, since it might be an anonymous | |
2987 | structure or union. This gets the type entered into our set of | |
2988 | user defined types. | |
2989 | ||
2990 | However, if the structure is incomplete (an opaque struct/union) | |
2991 | then suppress creating a symbol table entry for it since gdb only | |
2992 | wants to find the one with the complete definition. Note that if | |
2993 | it is complete, we just call new_symbol, which does it's own | |
2994 | checking about whether the struct/union is anonymous or not (and | |
2995 | suppresses creating a symbol table entry itself). */ | |
2996 | ||
2997 | static void | |
e7c27a73 | 2998 | read_structure_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2999 | { |
e7c27a73 | 3000 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3001 | struct type *type; |
3002 | struct attribute *attr; | |
63d06c5c DC |
3003 | const char *name = NULL; |
3004 | const char *previous_prefix = processing_current_prefix; | |
3005 | struct cleanup *back_to = NULL; | |
3006 | /* This says whether or not we want to try to update the structure's | |
3007 | name to include enclosing namespace/class information, if | |
3008 | any. */ | |
3009 | int need_to_update_name = 0; | |
c906108c SS |
3010 | |
3011 | type = alloc_type (objfile); | |
3012 | ||
3013 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3014 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3015 | if (attr && DW_STRING (attr)) |
3016 | { | |
63d06c5c DC |
3017 | name = DW_STRING (attr); |
3018 | ||
e142c38c | 3019 | if (cu->language == language_cplus) |
63d06c5c | 3020 | { |
e142c38c | 3021 | struct die_info *spec_die = die_specification (die, cu); |
63d06c5c DC |
3022 | |
3023 | if (spec_die != NULL) | |
3024 | { | |
e142c38c | 3025 | char *specification_prefix = determine_prefix (spec_die, cu); |
63d06c5c DC |
3026 | processing_current_prefix = specification_prefix; |
3027 | back_to = make_cleanup (xfree, specification_prefix); | |
3028 | } | |
3029 | } | |
3030 | ||
3031 | if (processing_has_namespace_info) | |
3032 | { | |
3033 | /* FIXME: carlton/2003-11-10: This variable exists only for | |
3034 | const-correctness reasons. When I tried to change | |
3035 | TYPE_TAG_NAME to be a const char *, I ran into a cascade | |
3036 | of changes which would have forced decode_line_1 to take | |
3037 | a const char **. */ | |
b99607ea | 3038 | char *new_prefix = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3039 | processing_current_prefix, |
3040 | processing_current_prefix[0] == '\0' | |
3041 | ? "" : "::", | |
3042 | name); | |
3043 | TYPE_TAG_NAME (type) = new_prefix; | |
3044 | processing_current_prefix = new_prefix; | |
3045 | } | |
3046 | else | |
3047 | { | |
3048 | TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), | |
b99607ea | 3049 | &objfile->objfile_obstack); |
e142c38c | 3050 | need_to_update_name = (cu->language == language_cplus); |
63d06c5c | 3051 | } |
c906108c SS |
3052 | } |
3053 | ||
3054 | if (die->tag == DW_TAG_structure_type) | |
3055 | { | |
3056 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3057 | } | |
3058 | else if (die->tag == DW_TAG_union_type) | |
3059 | { | |
3060 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3061 | } | |
3062 | else | |
3063 | { | |
3064 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3065 | in gdbtypes.h. */ |
c906108c SS |
3066 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3067 | } | |
3068 | ||
e142c38c | 3069 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3070 | if (attr) |
3071 | { | |
3072 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3073 | } | |
3074 | else | |
3075 | { | |
3076 | TYPE_LENGTH (type) = 0; | |
3077 | } | |
3078 | ||
3079 | /* We need to add the type field to the die immediately so we don't | |
3080 | infinitely recurse when dealing with pointers to the structure | |
3081 | type within the structure itself. */ | |
3082 | die->type = type; | |
3083 | ||
e142c38c | 3084 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3085 | { |
3086 | struct field_info fi; | |
3087 | struct die_info *child_die; | |
3088 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3089 | ||
3090 | memset (&fi, 0, sizeof (struct field_info)); | |
3091 | ||
639d11d3 | 3092 | child_die = die->child; |
c906108c SS |
3093 | |
3094 | while (child_die && child_die->tag) | |
3095 | { | |
a9a9bd0f DC |
3096 | if (child_die->tag == DW_TAG_member |
3097 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3098 | { |
a9a9bd0f DC |
3099 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3100 | should be a DW_TAG_member that is a declaration, but | |
3101 | all versions of G++ as of this writing (so through at | |
3102 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3103 | tags for them instead. */ | |
e7c27a73 | 3104 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3105 | } |
8713b1b1 | 3106 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3107 | { |
3108 | /* C++ member function. */ | |
e7c27a73 DJ |
3109 | process_die (child_die, cu); |
3110 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
63d06c5c DC |
3111 | if (need_to_update_name) |
3112 | { | |
3113 | /* The demangled names of member functions contain | |
3114 | information about enclosing namespaces/classes, | |
3115 | if any. */ | |
3116 | ||
3117 | /* FIXME: carlton/2003-11-10: The excessive | |
3118 | demangling here is a bit wasteful, as is the | |
3119 | memory usage for names. */ | |
3120 | ||
3121 | /* NOTE: carlton/2003-11-10: As commented in | |
3122 | add_partial_structure, the demangler sometimes | |
3123 | prints the type info in a different form from the | |
3124 | debug info. We could solve this by using the | |
3125 | demangled name to get the prefix; if doing so, | |
3126 | however, we'd need to be careful when reading a | |
3127 | class that's nested inside a template class. | |
3128 | That would also cause problems when trying to | |
3129 | determine RTTI information, since we use the | |
3130 | demangler to determine the appropriate class | |
3131 | name. */ | |
3132 | char *actual_class_name | |
3133 | = class_name_from_physname (dwarf2_linkage_name | |
e142c38c | 3134 | (child_die, cu)); |
63d06c5c DC |
3135 | if (actual_class_name != NULL |
3136 | && strcmp (actual_class_name, name) != 0) | |
3137 | { | |
3138 | TYPE_TAG_NAME (type) | |
3139 | = obsavestring (actual_class_name, | |
3140 | strlen (actual_class_name), | |
b99607ea | 3141 | &objfile->objfile_obstack); |
63d06c5c DC |
3142 | } |
3143 | xfree (actual_class_name); | |
3144 | need_to_update_name = 0; | |
3145 | } | |
c906108c SS |
3146 | } |
3147 | else if (child_die->tag == DW_TAG_inheritance) | |
3148 | { | |
3149 | /* C++ base class field. */ | |
e7c27a73 | 3150 | dwarf2_add_field (&fi, child_die, cu); |
c906108c SS |
3151 | } |
3152 | else | |
3153 | { | |
e7c27a73 | 3154 | process_die (child_die, cu); |
c906108c SS |
3155 | } |
3156 | child_die = sibling_die (child_die); | |
3157 | } | |
3158 | ||
3159 | /* Attach fields and member functions to the type. */ | |
3160 | if (fi.nfields) | |
e7c27a73 | 3161 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3162 | if (fi.nfnfields) |
3163 | { | |
e7c27a73 | 3164 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3165 | |
c5aa993b | 3166 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3167 | class itself) which contains the vtable pointer for the current |
3168 | class from the DW_AT_containing_type attribute. */ | |
3169 | ||
e142c38c | 3170 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3171 | { |
e7c27a73 | 3172 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3173 | |
3174 | TYPE_VPTR_BASETYPE (type) = t; | |
3175 | if (type == t) | |
3176 | { | |
c5aa993b JM |
3177 | static const char vptr_name[] = |
3178 | {'_', 'v', 'p', 't', 'r', '\0'}; | |
c906108c SS |
3179 | int i; |
3180 | ||
3181 | /* Our own class provides vtbl ptr. */ | |
3182 | for (i = TYPE_NFIELDS (t) - 1; | |
3183 | i >= TYPE_N_BASECLASSES (t); | |
3184 | --i) | |
3185 | { | |
3186 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3187 | ||
27bfe10e JB |
3188 | if ((strncmp (fieldname, vptr_name, |
3189 | strlen (vptr_name) - 1) | |
3190 | == 0) | |
c906108c SS |
3191 | && is_cplus_marker (fieldname[strlen (vptr_name)])) |
3192 | { | |
3193 | TYPE_VPTR_FIELDNO (type) = i; | |
3194 | break; | |
3195 | } | |
3196 | } | |
3197 | ||
3198 | /* Complain if virtual function table field not found. */ | |
3199 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 KB |
3200 | complaint (&symfile_complaints, |
3201 | "virtual function table pointer not found when defining class '%s'", | |
3202 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : | |
3203 | ""); | |
c906108c SS |
3204 | } |
3205 | else | |
3206 | { | |
3207 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3208 | } | |
3209 | } | |
3210 | } | |
3211 | ||
e7c27a73 | 3212 | new_symbol (die, type, cu); |
c906108c SS |
3213 | |
3214 | do_cleanups (back_to); | |
3215 | } | |
3216 | else | |
3217 | { | |
3218 | /* No children, must be stub. */ | |
3219 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3220 | } | |
63d06c5c DC |
3221 | |
3222 | processing_current_prefix = previous_prefix; | |
3223 | if (back_to != NULL) | |
3224 | do_cleanups (back_to); | |
c906108c SS |
3225 | } |
3226 | ||
3227 | /* Given a pointer to a die which begins an enumeration, process all | |
3228 | the dies that define the members of the enumeration. | |
3229 | ||
3230 | This will be much nicer in draft 6 of the DWARF spec when our | |
3231 | members will be dies instead squished into the DW_AT_element_list | |
3232 | attribute. | |
3233 | ||
3234 | NOTE: We reverse the order of the element list. */ | |
3235 | ||
3236 | static void | |
e7c27a73 | 3237 | read_enumeration (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3238 | { |
e7c27a73 | 3239 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3240 | struct die_info *child_die; |
3241 | struct type *type; | |
3242 | struct field *fields; | |
3243 | struct attribute *attr; | |
3244 | struct symbol *sym; | |
3245 | int num_fields; | |
3246 | int unsigned_enum = 1; | |
3247 | ||
3248 | type = alloc_type (objfile); | |
3249 | ||
3250 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3251 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3252 | if (attr && DW_STRING (attr)) |
3253 | { | |
63d06c5c DC |
3254 | const char *name = DW_STRING (attr); |
3255 | ||
3256 | if (processing_has_namespace_info) | |
3257 | { | |
b99607ea | 3258 | TYPE_TAG_NAME (type) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3259 | processing_current_prefix, |
3260 | processing_current_prefix[0] == '\0' | |
3261 | ? "" : "::", | |
3262 | name); | |
3263 | } | |
3264 | else | |
3265 | { | |
3266 | TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), | |
b99607ea | 3267 | &objfile->objfile_obstack); |
63d06c5c | 3268 | } |
c906108c SS |
3269 | } |
3270 | ||
e142c38c | 3271 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3272 | if (attr) |
3273 | { | |
3274 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3275 | } | |
3276 | else | |
3277 | { | |
3278 | TYPE_LENGTH (type) = 0; | |
3279 | } | |
3280 | ||
3281 | num_fields = 0; | |
3282 | fields = NULL; | |
639d11d3 | 3283 | if (die->child != NULL) |
c906108c | 3284 | { |
639d11d3 | 3285 | child_die = die->child; |
c906108c SS |
3286 | while (child_die && child_die->tag) |
3287 | { | |
3288 | if (child_die->tag != DW_TAG_enumerator) | |
3289 | { | |
e7c27a73 | 3290 | process_die (child_die, cu); |
c906108c SS |
3291 | } |
3292 | else | |
3293 | { | |
e142c38c | 3294 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
3295 | if (attr) |
3296 | { | |
e7c27a73 | 3297 | sym = new_symbol (child_die, type, cu); |
c906108c SS |
3298 | if (SYMBOL_VALUE (sym) < 0) |
3299 | unsigned_enum = 0; | |
3300 | ||
3301 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3302 | { | |
3303 | fields = (struct field *) | |
3304 | xrealloc (fields, | |
3305 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3306 | * sizeof (struct field)); |
c906108c SS |
3307 | } |
3308 | ||
22abf04a | 3309 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
3310 | FIELD_TYPE (fields[num_fields]) = NULL; |
3311 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
3312 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 3313 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
3314 | |
3315 | num_fields++; | |
3316 | } | |
3317 | } | |
3318 | ||
3319 | child_die = sibling_die (child_die); | |
3320 | } | |
3321 | ||
3322 | if (num_fields) | |
3323 | { | |
3324 | TYPE_NFIELDS (type) = num_fields; | |
3325 | TYPE_FIELDS (type) = (struct field *) | |
3326 | TYPE_ALLOC (type, sizeof (struct field) * num_fields); | |
3327 | memcpy (TYPE_FIELDS (type), fields, | |
3328 | sizeof (struct field) * num_fields); | |
b8c9b27d | 3329 | xfree (fields); |
c906108c SS |
3330 | } |
3331 | if (unsigned_enum) | |
3332 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
3333 | } | |
3334 | die->type = type; | |
e7c27a73 | 3335 | new_symbol (die, type, cu); |
c906108c SS |
3336 | } |
3337 | ||
3338 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
3339 | the DIE's type field. For now, this only handles one dimensional | |
3340 | arrays. */ | |
3341 | ||
3342 | static void | |
e7c27a73 | 3343 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3344 | { |
e7c27a73 | 3345 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3346 | struct die_info *child_die; |
3347 | struct type *type = NULL; | |
3348 | struct type *element_type, *range_type, *index_type; | |
3349 | struct type **range_types = NULL; | |
3350 | struct attribute *attr; | |
3351 | int ndim = 0; | |
3352 | struct cleanup *back_to; | |
3353 | ||
3354 | /* Return if we've already decoded this type. */ | |
3355 | if (die->type) | |
3356 | { | |
3357 | return; | |
3358 | } | |
3359 | ||
e7c27a73 | 3360 | element_type = die_type (die, cu); |
c906108c SS |
3361 | |
3362 | /* Irix 6.2 native cc creates array types without children for | |
3363 | arrays with unspecified length. */ | |
639d11d3 | 3364 | if (die->child == NULL) |
c906108c | 3365 | { |
e142c38c | 3366 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c SS |
3367 | range_type = create_range_type (NULL, index_type, 0, -1); |
3368 | die->type = create_array_type (NULL, element_type, range_type); | |
3369 | return; | |
3370 | } | |
3371 | ||
3372 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 3373 | child_die = die->child; |
c906108c SS |
3374 | while (child_die && child_die->tag) |
3375 | { | |
3376 | if (child_die->tag == DW_TAG_subrange_type) | |
3377 | { | |
a02abb62 | 3378 | read_subrange_type (child_die, cu); |
c906108c | 3379 | |
a02abb62 JB |
3380 | if (child_die->type != NULL) |
3381 | { | |
3382 | /* The range type was succesfully read. Save it for | |
3383 | the array type creation. */ | |
3384 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
3385 | { | |
3386 | range_types = (struct type **) | |
3387 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
3388 | * sizeof (struct type *)); | |
3389 | if (ndim == 0) | |
3390 | make_cleanup (free_current_contents, &range_types); | |
3391 | } | |
3392 | range_types[ndim++] = child_die->type; | |
3393 | } | |
c906108c SS |
3394 | } |
3395 | child_die = sibling_die (child_die); | |
3396 | } | |
3397 | ||
3398 | /* Dwarf2 dimensions are output from left to right, create the | |
3399 | necessary array types in backwards order. */ | |
3400 | type = element_type; | |
3401 | while (ndim-- > 0) | |
3402 | type = create_array_type (NULL, type, range_types[ndim]); | |
3403 | ||
f5f8a009 EZ |
3404 | /* Understand Dwarf2 support for vector types (like they occur on |
3405 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
3406 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
3407 | custom vendor extension. The main difference between a regular | |
3408 | array and the vector variant is that vectors are passed by value | |
3409 | to functions. */ | |
e142c38c | 3410 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
3411 | if (attr) |
3412 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
3413 | ||
c906108c SS |
3414 | do_cleanups (back_to); |
3415 | ||
3416 | /* Install the type in the die. */ | |
3417 | die->type = type; | |
3418 | } | |
3419 | ||
3420 | /* First cut: install each common block member as a global variable. */ | |
3421 | ||
3422 | static void | |
e7c27a73 | 3423 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3424 | { |
3425 | struct die_info *child_die; | |
3426 | struct attribute *attr; | |
3427 | struct symbol *sym; | |
3428 | CORE_ADDR base = (CORE_ADDR) 0; | |
3429 | ||
e142c38c | 3430 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
3431 | if (attr) |
3432 | { | |
8e19ed76 PS |
3433 | /* Support the .debug_loc offsets */ |
3434 | if (attr_form_is_block (attr)) | |
3435 | { | |
e7c27a73 | 3436 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
3437 | } |
3438 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3439 | { | |
4d3c2250 | 3440 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3441 | } |
3442 | else | |
3443 | { | |
4d3c2250 KB |
3444 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
3445 | "common block member"); | |
8e19ed76 | 3446 | } |
c906108c | 3447 | } |
639d11d3 | 3448 | if (die->child != NULL) |
c906108c | 3449 | { |
639d11d3 | 3450 | child_die = die->child; |
c906108c SS |
3451 | while (child_die && child_die->tag) |
3452 | { | |
e7c27a73 | 3453 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 3454 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
3455 | if (attr) |
3456 | { | |
3457 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 3458 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
3459 | add_symbol_to_list (sym, &global_symbols); |
3460 | } | |
3461 | child_die = sibling_die (child_die); | |
3462 | } | |
3463 | } | |
3464 | } | |
3465 | ||
d9fa45fe DC |
3466 | /* Read a C++ namespace. */ |
3467 | ||
d9fa45fe | 3468 | static void |
e7c27a73 | 3469 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 3470 | { |
e7c27a73 | 3471 | struct objfile *objfile = cu->objfile; |
38d518c9 | 3472 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 3473 | const char *name; |
9219021c DC |
3474 | int is_anonymous; |
3475 | struct die_info *current_die; | |
3476 | ||
e142c38c | 3477 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
3478 | |
3479 | /* Now build the name of the current namespace. */ | |
3480 | ||
38d518c9 | 3481 | if (previous_prefix[0] == '\0') |
9219021c | 3482 | { |
38d518c9 | 3483 | processing_current_prefix = name; |
9219021c DC |
3484 | } |
3485 | else | |
3486 | { | |
38d518c9 | 3487 | /* We need temp_name around because processing_current_prefix |
9219021c | 3488 | is a const char *. */ |
38d518c9 | 3489 | char *temp_name = alloca (strlen (previous_prefix) |
9219021c | 3490 | + 2 + strlen(name) + 1); |
38d518c9 | 3491 | strcpy (temp_name, previous_prefix); |
9219021c DC |
3492 | strcat (temp_name, "::"); |
3493 | strcat (temp_name, name); | |
3494 | ||
38d518c9 | 3495 | processing_current_prefix = temp_name; |
9219021c DC |
3496 | } |
3497 | ||
5c4e30ca DC |
3498 | /* Add a symbol associated to this if we haven't seen the namespace |
3499 | before. Also, add a using directive if it's an anonymous | |
3500 | namespace. */ | |
9219021c | 3501 | |
e142c38c | 3502 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
3503 | { |
3504 | struct type *type; | |
3505 | ||
3506 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
3507 | this cast will hopefully become unnecessary. */ | |
3508 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 3509 | (char *) processing_current_prefix, |
5c4e30ca DC |
3510 | objfile); |
3511 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
3512 | ||
e7c27a73 | 3513 | new_symbol (die, type, cu); |
5c4e30ca DC |
3514 | |
3515 | if (is_anonymous) | |
38d518c9 EZ |
3516 | cp_add_using_directive (processing_current_prefix, |
3517 | strlen (previous_prefix), | |
3518 | strlen (processing_current_prefix)); | |
5c4e30ca | 3519 | } |
9219021c | 3520 | |
639d11d3 | 3521 | if (die->child != NULL) |
d9fa45fe | 3522 | { |
639d11d3 | 3523 | struct die_info *child_die = die->child; |
d9fa45fe DC |
3524 | |
3525 | while (child_die && child_die->tag) | |
3526 | { | |
e7c27a73 | 3527 | process_die (child_die, cu); |
d9fa45fe DC |
3528 | child_die = sibling_die (child_die); |
3529 | } | |
3530 | } | |
9219021c | 3531 | |
38d518c9 EZ |
3532 | processing_current_prefix = previous_prefix; |
3533 | } | |
3534 | ||
3535 | /* Return the name of the namespace represented by DIE. Set | |
3536 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
3537 | namespace. */ | |
3538 | ||
3539 | static const char * | |
e142c38c | 3540 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
3541 | { |
3542 | struct die_info *current_die; | |
3543 | const char *name = NULL; | |
3544 | ||
3545 | /* Loop through the extensions until we find a name. */ | |
3546 | ||
3547 | for (current_die = die; | |
3548 | current_die != NULL; | |
e142c38c | 3549 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 3550 | { |
e142c38c | 3551 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
3552 | if (name != NULL) |
3553 | break; | |
3554 | } | |
3555 | ||
3556 | /* Is it an anonymous namespace? */ | |
3557 | ||
3558 | *is_anonymous = (name == NULL); | |
3559 | if (*is_anonymous) | |
3560 | name = "(anonymous namespace)"; | |
3561 | ||
3562 | return name; | |
d9fa45fe DC |
3563 | } |
3564 | ||
c906108c SS |
3565 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
3566 | the user defined type vector. */ | |
3567 | ||
3568 | static void | |
e7c27a73 | 3569 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3570 | { |
e7c27a73 | 3571 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 3572 | struct type *type; |
8b2dbe47 KB |
3573 | struct attribute *attr_byte_size; |
3574 | struct attribute *attr_address_class; | |
3575 | int byte_size, addr_class; | |
c906108c SS |
3576 | |
3577 | if (die->type) | |
3578 | { | |
3579 | return; | |
3580 | } | |
3581 | ||
e7c27a73 | 3582 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 3583 | |
e142c38c | 3584 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
3585 | if (attr_byte_size) |
3586 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 3587 | else |
8b2dbe47 KB |
3588 | byte_size = cu_header->addr_size; |
3589 | ||
e142c38c | 3590 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
3591 | if (attr_address_class) |
3592 | addr_class = DW_UNSND (attr_address_class); | |
3593 | else | |
3594 | addr_class = DW_ADDR_none; | |
3595 | ||
3596 | /* If the pointer size or address class is different than the | |
3597 | default, create a type variant marked as such and set the | |
3598 | length accordingly. */ | |
3599 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 3600 | { |
8b2dbe47 KB |
3601 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
3602 | { | |
3603 | int type_flags; | |
3604 | ||
3605 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
3606 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
3607 | type = make_type_with_address_space (type, type_flags); | |
3608 | } | |
3609 | else if (TYPE_LENGTH (type) != byte_size) | |
3610 | { | |
4d3c2250 | 3611 | complaint (&symfile_complaints, "invalid pointer size %d", byte_size); |
8b2dbe47 KB |
3612 | } |
3613 | else { | |
3614 | /* Should we also complain about unhandled address classes? */ | |
3615 | } | |
c906108c | 3616 | } |
8b2dbe47 KB |
3617 | |
3618 | TYPE_LENGTH (type) = byte_size; | |
c906108c SS |
3619 | die->type = type; |
3620 | } | |
3621 | ||
3622 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
3623 | the user defined type vector. */ | |
3624 | ||
3625 | static void | |
e7c27a73 | 3626 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3627 | { |
e7c27a73 | 3628 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3629 | struct type *type; |
3630 | struct type *to_type; | |
3631 | struct type *domain; | |
3632 | ||
3633 | if (die->type) | |
3634 | { | |
3635 | return; | |
3636 | } | |
3637 | ||
3638 | type = alloc_type (objfile); | |
e7c27a73 DJ |
3639 | to_type = die_type (die, cu); |
3640 | domain = die_containing_type (die, cu); | |
c906108c SS |
3641 | smash_to_member_type (type, domain, to_type); |
3642 | ||
3643 | die->type = type; | |
3644 | } | |
3645 | ||
3646 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
3647 | the user defined type vector. */ | |
3648 | ||
3649 | static void | |
e7c27a73 | 3650 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3651 | { |
e7c27a73 | 3652 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
3653 | struct type *type; |
3654 | struct attribute *attr; | |
3655 | ||
3656 | if (die->type) | |
3657 | { | |
3658 | return; | |
3659 | } | |
3660 | ||
e7c27a73 | 3661 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 3662 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3663 | if (attr) |
3664 | { | |
3665 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3666 | } | |
3667 | else | |
3668 | { | |
107d2387 | 3669 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c SS |
3670 | } |
3671 | die->type = type; | |
3672 | } | |
3673 | ||
3674 | static void | |
e7c27a73 | 3675 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3676 | { |
090c42a4 JB |
3677 | struct type *base_type; |
3678 | ||
c906108c SS |
3679 | if (die->type) |
3680 | { | |
3681 | return; | |
3682 | } | |
3683 | ||
e7c27a73 | 3684 | base_type = die_type (die, cu); |
090c42a4 | 3685 | die->type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
c906108c SS |
3686 | } |
3687 | ||
3688 | static void | |
e7c27a73 | 3689 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3690 | { |
090c42a4 JB |
3691 | struct type *base_type; |
3692 | ||
c906108c SS |
3693 | if (die->type) |
3694 | { | |
3695 | return; | |
3696 | } | |
3697 | ||
e7c27a73 | 3698 | base_type = die_type (die, cu); |
090c42a4 | 3699 | die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
c906108c SS |
3700 | } |
3701 | ||
3702 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
3703 | the user defined type vector. It isn't really a user defined type, | |
3704 | but it behaves like one, with other DIE's using an AT_user_def_type | |
3705 | attribute to reference it. */ | |
3706 | ||
3707 | static void | |
e7c27a73 | 3708 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3709 | { |
e7c27a73 | 3710 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3711 | struct type *type, *range_type, *index_type, *char_type; |
3712 | struct attribute *attr; | |
3713 | unsigned int length; | |
3714 | ||
3715 | if (die->type) | |
3716 | { | |
3717 | return; | |
3718 | } | |
3719 | ||
e142c38c | 3720 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
3721 | if (attr) |
3722 | { | |
3723 | length = DW_UNSND (attr); | |
3724 | } | |
3725 | else | |
3726 | { | |
b21b22e0 | 3727 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 3728 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
3729 | if (attr) |
3730 | { | |
3731 | length = DW_UNSND (attr); | |
3732 | } | |
3733 | else | |
3734 | { | |
3735 | length = 1; | |
3736 | } | |
c906108c | 3737 | } |
e142c38c | 3738 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 3739 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 3740 | if (cu->language == language_fortran) |
b21b22e0 PS |
3741 | { |
3742 | /* Need to create a unique string type for bounds | |
3743 | information */ | |
3744 | type = create_string_type (0, range_type); | |
3745 | } | |
3746 | else | |
3747 | { | |
e142c38c | 3748 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
3749 | type = create_string_type (char_type, range_type); |
3750 | } | |
c906108c SS |
3751 | die->type = type; |
3752 | } | |
3753 | ||
3754 | /* Handle DIES due to C code like: | |
3755 | ||
3756 | struct foo | |
c5aa993b JM |
3757 | { |
3758 | int (*funcp)(int a, long l); | |
3759 | int b; | |
3760 | }; | |
c906108c SS |
3761 | |
3762 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 3763 | */ |
c906108c SS |
3764 | |
3765 | static void | |
e7c27a73 | 3766 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3767 | { |
3768 | struct type *type; /* Type that this function returns */ | |
3769 | struct type *ftype; /* Function that returns above type */ | |
3770 | struct attribute *attr; | |
3771 | ||
3772 | /* Decode the type that this subroutine returns */ | |
3773 | if (die->type) | |
3774 | { | |
3775 | return; | |
3776 | } | |
e7c27a73 | 3777 | type = die_type (die, cu); |
c906108c SS |
3778 | ftype = lookup_function_type (type); |
3779 | ||
3780 | /* All functions in C++ have prototypes. */ | |
e142c38c | 3781 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 3782 | if ((attr && (DW_UNSND (attr) != 0)) |
e142c38c | 3783 | || cu->language == language_cplus) |
c906108c SS |
3784 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
3785 | ||
639d11d3 | 3786 | if (die->child != NULL) |
c906108c SS |
3787 | { |
3788 | struct die_info *child_die; | |
3789 | int nparams = 0; | |
3790 | int iparams = 0; | |
3791 | ||
3792 | /* Count the number of parameters. | |
3793 | FIXME: GDB currently ignores vararg functions, but knows about | |
3794 | vararg member functions. */ | |
639d11d3 | 3795 | child_die = die->child; |
c906108c SS |
3796 | while (child_die && child_die->tag) |
3797 | { | |
3798 | if (child_die->tag == DW_TAG_formal_parameter) | |
3799 | nparams++; | |
3800 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
3801 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
3802 | child_die = sibling_die (child_die); | |
3803 | } | |
3804 | ||
3805 | /* Allocate storage for parameters and fill them in. */ | |
3806 | TYPE_NFIELDS (ftype) = nparams; | |
3807 | TYPE_FIELDS (ftype) = (struct field *) | |
3808 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
3809 | ||
639d11d3 | 3810 | child_die = die->child; |
c906108c SS |
3811 | while (child_die && child_die->tag) |
3812 | { | |
3813 | if (child_die->tag == DW_TAG_formal_parameter) | |
3814 | { | |
3815 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
3816 | member functions. G++ helps GDB by marking the first |
3817 | parameter for non-static member functions (which is the | |
3818 | this pointer) as artificial. We pass this information | |
3819 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 3820 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
3821 | if (attr) |
3822 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
3823 | else | |
3824 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 3825 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
3826 | iparams++; |
3827 | } | |
3828 | child_die = sibling_die (child_die); | |
3829 | } | |
3830 | } | |
3831 | ||
3832 | die->type = ftype; | |
3833 | } | |
3834 | ||
3835 | static void | |
e7c27a73 | 3836 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3837 | { |
e7c27a73 | 3838 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
3839 | struct attribute *attr; |
3840 | char *name = NULL; | |
c906108c SS |
3841 | |
3842 | if (!die->type) | |
3843 | { | |
e142c38c | 3844 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 3845 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
3846 | { |
3847 | name = DW_STRING (attr); | |
3848 | } | |
3849 | die->type = init_type (TYPE_CODE_TYPEDEF, 0, TYPE_FLAG_TARGET_STUB, name, objfile); | |
e7c27a73 | 3850 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
3851 | } |
3852 | } | |
3853 | ||
3854 | /* Find a representation of a given base type and install | |
3855 | it in the TYPE field of the die. */ | |
3856 | ||
3857 | static void | |
e7c27a73 | 3858 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3859 | { |
e7c27a73 | 3860 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3861 | struct type *type; |
3862 | struct attribute *attr; | |
3863 | int encoding = 0, size = 0; | |
3864 | ||
3865 | /* If we've already decoded this die, this is a no-op. */ | |
3866 | if (die->type) | |
3867 | { | |
3868 | return; | |
3869 | } | |
3870 | ||
e142c38c | 3871 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
3872 | if (attr) |
3873 | { | |
3874 | encoding = DW_UNSND (attr); | |
3875 | } | |
e142c38c | 3876 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3877 | if (attr) |
3878 | { | |
3879 | size = DW_UNSND (attr); | |
3880 | } | |
e142c38c | 3881 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3882 | if (attr && DW_STRING (attr)) |
3883 | { | |
3884 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 3885 | int type_flags = 0; |
c906108c SS |
3886 | |
3887 | switch (encoding) | |
3888 | { | |
3889 | case DW_ATE_address: | |
3890 | /* Turn DW_ATE_address into a void * pointer. */ | |
3891 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 3892 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
3893 | break; |
3894 | case DW_ATE_boolean: | |
3895 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 3896 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
3897 | break; |
3898 | case DW_ATE_complex_float: | |
3899 | code = TYPE_CODE_COMPLEX; | |
3900 | break; | |
3901 | case DW_ATE_float: | |
3902 | code = TYPE_CODE_FLT; | |
3903 | break; | |
3904 | case DW_ATE_signed: | |
3905 | case DW_ATE_signed_char: | |
3906 | break; | |
3907 | case DW_ATE_unsigned: | |
3908 | case DW_ATE_unsigned_char: | |
f5ef7c67 | 3909 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
3910 | break; |
3911 | default: | |
4d3c2250 KB |
3912 | complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'", |
3913 | dwarf_type_encoding_name (encoding)); | |
c906108c SS |
3914 | break; |
3915 | } | |
f5ef7c67 | 3916 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 3917 | if (encoding == DW_ATE_address) |
e142c38c DJ |
3918 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
3919 | cu); | |
f65ca430 DJ |
3920 | else if (encoding == DW_ATE_complex_float) |
3921 | { | |
3922 | if (size == 32) | |
3923 | TYPE_TARGET_TYPE (type) | |
e142c38c | 3924 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
3925 | else if (size == 16) |
3926 | TYPE_TARGET_TYPE (type) | |
e142c38c | 3927 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
3928 | else if (size == 8) |
3929 | TYPE_TARGET_TYPE (type) | |
e142c38c | 3930 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 3931 | } |
c906108c SS |
3932 | } |
3933 | else | |
3934 | { | |
e7c27a73 | 3935 | type = dwarf_base_type (encoding, size, cu); |
c906108c SS |
3936 | } |
3937 | die->type = type; | |
3938 | } | |
3939 | ||
a02abb62 JB |
3940 | /* Read the given DW_AT_subrange DIE. */ |
3941 | ||
3942 | static void | |
3943 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
3944 | { | |
3945 | struct type *base_type; | |
3946 | struct type *range_type; | |
3947 | struct attribute *attr; | |
3948 | int low = 0; | |
3949 | int high = -1; | |
3950 | ||
3951 | /* If we have already decoded this die, then nothing more to do. */ | |
3952 | if (die->type) | |
3953 | return; | |
3954 | ||
3955 | base_type = die_type (die, cu); | |
3956 | if (base_type == NULL) | |
3957 | { | |
3958 | complaint (&symfile_complaints, | |
3959 | "DW_AT_type missing from DW_TAG_subrange_type"); | |
3960 | return; | |
3961 | } | |
3962 | ||
3963 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
3964 | base_type = alloc_type (NULL); | |
3965 | ||
e142c38c | 3966 | if (cu->language == language_fortran) |
a02abb62 JB |
3967 | { |
3968 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
3969 | low = 1; | |
3970 | } | |
3971 | ||
e142c38c | 3972 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
3973 | if (attr) |
3974 | low = dwarf2_get_attr_constant_value (attr, 0); | |
3975 | ||
e142c38c | 3976 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
3977 | if (attr) |
3978 | { | |
3979 | if (attr->form == DW_FORM_block1) | |
3980 | { | |
3981 | /* GCC encodes arrays with unspecified or dynamic length | |
3982 | with a DW_FORM_block1 attribute. | |
3983 | FIXME: GDB does not yet know how to handle dynamic | |
3984 | arrays properly, treat them as arrays with unspecified | |
3985 | length for now. | |
3986 | ||
3987 | FIXME: jimb/2003-09-22: GDB does not really know | |
3988 | how to handle arrays of unspecified length | |
3989 | either; we just represent them as zero-length | |
3990 | arrays. Choose an appropriate upper bound given | |
3991 | the lower bound we've computed above. */ | |
3992 | high = low - 1; | |
3993 | } | |
3994 | else | |
3995 | high = dwarf2_get_attr_constant_value (attr, 1); | |
3996 | } | |
3997 | ||
3998 | range_type = create_range_type (NULL, base_type, low, high); | |
3999 | ||
e142c38c | 4000 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4001 | if (attr && DW_STRING (attr)) |
4002 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4003 | ||
e142c38c | 4004 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4005 | if (attr) |
4006 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4007 | ||
4008 | die->type = range_type; | |
4009 | } | |
4010 | ||
4011 | ||
c906108c SS |
4012 | /* Read a whole compilation unit into a linked list of dies. */ |
4013 | ||
f9aca02d | 4014 | static struct die_info * |
e7c27a73 | 4015 | read_comp_unit (char *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4016 | { |
b3810801 | 4017 | /* Reset die reference table; we are |
7f0e3f52 AC |
4018 | building new ones now. */ |
4019 | dwarf2_empty_hash_tables (); | |
c906108c | 4020 | |
e7c27a73 | 4021 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4022 | } |
4023 | ||
4024 | /* Read a single die and all its descendents. Set the die's sibling | |
4025 | field to NULL; set other fields in the die correctly, and set all | |
4026 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4027 | location of the info_ptr after reading all of those dies. PARENT | |
4028 | is the parent of the die in question. */ | |
4029 | ||
4030 | static struct die_info * | |
4031 | read_die_and_children (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4032 | struct dwarf2_cu *cu, |
639d11d3 DC |
4033 | char **new_info_ptr, |
4034 | struct die_info *parent) | |
4035 | { | |
4036 | struct die_info *die; | |
4037 | char *cur_ptr; | |
4038 | int has_children; | |
4039 | ||
e7c27a73 | 4040 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
639d11d3 DC |
4041 | store_in_ref_table (die->offset, die); |
4042 | ||
4043 | if (has_children) | |
4044 | { | |
e7c27a73 | 4045 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4046 | new_info_ptr, die); |
4047 | } | |
4048 | else | |
4049 | { | |
4050 | die->child = NULL; | |
4051 | *new_info_ptr = cur_ptr; | |
4052 | } | |
4053 | ||
4054 | die->sibling = NULL; | |
4055 | die->parent = parent; | |
4056 | return die; | |
4057 | } | |
4058 | ||
4059 | /* Read a die, all of its descendents, and all of its siblings; set | |
4060 | all of the fields of all of the dies correctly. Arguments are as | |
4061 | in read_die_and_children. */ | |
4062 | ||
4063 | static struct die_info * | |
4064 | read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4065 | struct dwarf2_cu *cu, |
639d11d3 DC |
4066 | char **new_info_ptr, |
4067 | struct die_info *parent) | |
4068 | { | |
4069 | struct die_info *first_die, *last_sibling; | |
4070 | char *cur_ptr; | |
4071 | ||
c906108c | 4072 | cur_ptr = info_ptr; |
639d11d3 DC |
4073 | first_die = last_sibling = NULL; |
4074 | ||
4075 | while (1) | |
c906108c | 4076 | { |
639d11d3 | 4077 | struct die_info *die |
e7c27a73 | 4078 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4079 | |
4080 | if (!first_die) | |
c906108c | 4081 | { |
639d11d3 | 4082 | first_die = die; |
c906108c | 4083 | } |
639d11d3 | 4084 | else |
c906108c | 4085 | { |
639d11d3 | 4086 | last_sibling->sibling = die; |
c906108c SS |
4087 | } |
4088 | ||
639d11d3 | 4089 | if (die->tag == 0) |
c906108c | 4090 | { |
639d11d3 DC |
4091 | *new_info_ptr = cur_ptr; |
4092 | return first_die; | |
c906108c SS |
4093 | } |
4094 | else | |
4095 | { | |
639d11d3 | 4096 | last_sibling = die; |
c906108c SS |
4097 | } |
4098 | } | |
c906108c SS |
4099 | } |
4100 | ||
4101 | /* Free a linked list of dies. */ | |
4102 | ||
4103 | static void | |
fba45db2 | 4104 | free_die_list (struct die_info *dies) |
c906108c SS |
4105 | { |
4106 | struct die_info *die, *next; | |
4107 | ||
4108 | die = dies; | |
4109 | while (die) | |
4110 | { | |
639d11d3 DC |
4111 | if (die->child != NULL) |
4112 | free_die_list (die->child); | |
4113 | next = die->sibling; | |
b8c9b27d KB |
4114 | xfree (die->attrs); |
4115 | xfree (die); | |
c906108c SS |
4116 | die = next; |
4117 | } | |
4118 | } | |
4119 | ||
74b7792f AC |
4120 | static void |
4121 | do_free_die_list_cleanup (void *dies) | |
4122 | { | |
4123 | free_die_list (dies); | |
4124 | } | |
4125 | ||
4126 | static struct cleanup * | |
4127 | make_cleanup_free_die_list (struct die_info *dies) | |
4128 | { | |
4129 | return make_cleanup (do_free_die_list_cleanup, dies); | |
4130 | } | |
4131 | ||
4132 | ||
c906108c | 4133 | /* Read the contents of the section at OFFSET and of size SIZE from the |
8b92e4d5 | 4134 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4135 | |
b6af0555 | 4136 | char * |
188dd5d6 | 4137 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4138 | { |
4139 | bfd *abfd = objfile->obfd; | |
086df311 | 4140 | char *buf, *retbuf; |
188dd5d6 | 4141 | bfd_size_type size = bfd_get_section_size_before_reloc (sectp); |
c906108c SS |
4142 | |
4143 | if (size == 0) | |
4144 | return NULL; | |
4145 | ||
8b92e4d5 | 4146 | buf = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
086df311 DJ |
4147 | retbuf |
4148 | = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf); | |
4149 | if (retbuf != NULL) | |
4150 | return retbuf; | |
4151 | ||
188dd5d6 DJ |
4152 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
4153 | || bfd_bread (buf, size, abfd) != size) | |
4154 | error ("Dwarf Error: Can't read DWARF data from '%s'", | |
4155 | bfd_get_filename (abfd)); | |
4156 | ||
c906108c SS |
4157 | return buf; |
4158 | } | |
4159 | ||
4160 | /* In DWARF version 2, the description of the debugging information is | |
4161 | stored in a separate .debug_abbrev section. Before we read any | |
4162 | dies from a section we read in all abbreviations and install them | |
4163 | in a hash table. */ | |
4164 | ||
4165 | static void | |
e7c27a73 | 4166 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4167 | { |
e7c27a73 | 4168 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4169 | char *abbrev_ptr; |
4170 | struct abbrev_info *cur_abbrev; | |
4171 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
4172 | unsigned int abbrev_form, hash_number; | |
4173 | ||
57349743 JB |
4174 | /* Initialize dwarf2 abbrevs */ |
4175 | memset (cu_header->dwarf2_abbrevs, 0, | |
4176 | ABBREV_HASH_SIZE*sizeof (struct abbrev_info *)); | |
c906108c | 4177 | |
57349743 | 4178 | abbrev_ptr = dwarf_abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
4179 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4180 | abbrev_ptr += bytes_read; | |
4181 | ||
4182 | /* loop until we reach an abbrev number of 0 */ | |
4183 | while (abbrev_number) | |
4184 | { | |
4185 | cur_abbrev = dwarf_alloc_abbrev (); | |
4186 | ||
4187 | /* read in abbrev header */ | |
4188 | cur_abbrev->number = abbrev_number; | |
4189 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4190 | abbrev_ptr += bytes_read; | |
4191 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
4192 | abbrev_ptr += 1; | |
4193 | ||
4194 | /* now read in declarations */ | |
4195 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4196 | abbrev_ptr += bytes_read; | |
4197 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4198 | abbrev_ptr += bytes_read; | |
4199 | while (abbrev_name) | |
4200 | { | |
4201 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) | |
4202 | { | |
4203 | cur_abbrev->attrs = (struct attr_abbrev *) | |
4204 | xrealloc (cur_abbrev->attrs, | |
4205 | (cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK) | |
c5aa993b | 4206 | * sizeof (struct attr_abbrev)); |
c906108c SS |
4207 | } |
4208 | cur_abbrev->attrs[cur_abbrev->num_attrs].name = abbrev_name; | |
4209 | cur_abbrev->attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
4210 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4211 | abbrev_ptr += bytes_read; | |
4212 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4213 | abbrev_ptr += bytes_read; | |
4214 | } | |
4215 | ||
4216 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
57349743 JB |
4217 | cur_abbrev->next = cu_header->dwarf2_abbrevs[hash_number]; |
4218 | cu_header->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
4219 | |
4220 | /* Get next abbreviation. | |
4221 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
4222 | always properly terminated with an abbrev number of 0. |
4223 | Exit loop if we encounter an abbreviation which we have | |
4224 | already read (which means we are about to read the abbreviations | |
4225 | for the next compile unit) or if the end of the abbreviation | |
4226 | table is reached. */ | |
c906108c | 4227 | if ((unsigned int) (abbrev_ptr - dwarf_abbrev_buffer) |
c5aa993b | 4228 | >= dwarf_abbrev_size) |
c906108c SS |
4229 | break; |
4230 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4231 | abbrev_ptr += bytes_read; | |
e7c27a73 | 4232 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
4233 | break; |
4234 | } | |
4235 | } | |
4236 | ||
4237 | /* Empty the abbrev table for a new compilation unit. */ | |
4238 | ||
c906108c | 4239 | static void |
4efb68b1 | 4240 | dwarf2_empty_abbrev_table (void *ptr_to_abbrevs_table) |
c906108c SS |
4241 | { |
4242 | int i; | |
4243 | struct abbrev_info *abbrev, *next; | |
57349743 JB |
4244 | struct abbrev_info **abbrevs; |
4245 | ||
4246 | abbrevs = (struct abbrev_info **)ptr_to_abbrevs_table; | |
c906108c SS |
4247 | |
4248 | for (i = 0; i < ABBREV_HASH_SIZE; ++i) | |
4249 | { | |
4250 | next = NULL; | |
57349743 | 4251 | abbrev = abbrevs[i]; |
c906108c SS |
4252 | while (abbrev) |
4253 | { | |
4254 | next = abbrev->next; | |
b8c9b27d KB |
4255 | xfree (abbrev->attrs); |
4256 | xfree (abbrev); | |
c906108c SS |
4257 | abbrev = next; |
4258 | } | |
57349743 | 4259 | abbrevs[i] = NULL; |
c906108c SS |
4260 | } |
4261 | } | |
4262 | ||
4263 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
4264 | ||
4265 | static struct abbrev_info * | |
e7c27a73 | 4266 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c | 4267 | { |
e7c27a73 | 4268 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4269 | unsigned int hash_number; |
4270 | struct abbrev_info *abbrev; | |
4271 | ||
4272 | hash_number = number % ABBREV_HASH_SIZE; | |
57349743 | 4273 | abbrev = cu_header->dwarf2_abbrevs[hash_number]; |
c906108c SS |
4274 | |
4275 | while (abbrev) | |
4276 | { | |
4277 | if (abbrev->number == number) | |
4278 | return abbrev; | |
4279 | else | |
4280 | abbrev = abbrev->next; | |
4281 | } | |
4282 | return NULL; | |
4283 | } | |
4284 | ||
4285 | /* Read a minimal amount of information into the minimal die structure. */ | |
4286 | ||
4287 | static char * | |
107d2387 | 4288 | read_partial_die (struct partial_die_info *part_die, bfd *abfd, |
e7c27a73 | 4289 | char *info_ptr, struct dwarf2_cu *cu) |
c906108c SS |
4290 | { |
4291 | unsigned int abbrev_number, bytes_read, i; | |
4292 | struct abbrev_info *abbrev; | |
4293 | struct attribute attr; | |
4294 | struct attribute spec_attr; | |
4295 | int found_spec_attr = 0; | |
c5aa993b | 4296 | int has_low_pc_attr = 0; |
c906108c SS |
4297 | int has_high_pc_attr = 0; |
4298 | ||
4299 | *part_die = zeroed_partial_die; | |
c906108c SS |
4300 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4301 | info_ptr += bytes_read; | |
4302 | if (!abbrev_number) | |
4303 | return info_ptr; | |
4304 | ||
e7c27a73 | 4305 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4306 | if (!abbrev) |
4307 | { | |
659b0389 ML |
4308 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, |
4309 | bfd_get_filename (abfd)); | |
c906108c SS |
4310 | } |
4311 | part_die->offset = info_ptr - dwarf_info_buffer; | |
4312 | part_die->tag = abbrev->tag; | |
4313 | part_die->has_children = abbrev->has_children; | |
4314 | part_die->abbrev = abbrev_number; | |
4315 | ||
4316 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4317 | { | |
e7c27a73 | 4318 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
4319 | |
4320 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 4321 | partial symbol table. */ |
c906108c SS |
4322 | switch (attr.name) |
4323 | { | |
4324 | case DW_AT_name: | |
4325 | ||
4326 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
4327 | if (part_die->name == NULL) | |
4328 | part_die->name = DW_STRING (&attr); | |
4329 | break; | |
4330 | case DW_AT_MIPS_linkage_name: | |
4331 | part_die->name = DW_STRING (&attr); | |
4332 | break; | |
4333 | case DW_AT_low_pc: | |
4334 | has_low_pc_attr = 1; | |
4335 | part_die->lowpc = DW_ADDR (&attr); | |
4336 | break; | |
4337 | case DW_AT_high_pc: | |
4338 | has_high_pc_attr = 1; | |
4339 | part_die->highpc = DW_ADDR (&attr); | |
4340 | break; | |
4341 | case DW_AT_location: | |
8e19ed76 PS |
4342 | /* Support the .debug_loc offsets */ |
4343 | if (attr_form_is_block (&attr)) | |
4344 | { | |
4345 | part_die->locdesc = DW_BLOCK (&attr); | |
4346 | } | |
4347 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
4348 | { | |
4d3c2250 | 4349 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4350 | } |
4351 | else | |
4352 | { | |
4d3c2250 KB |
4353 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4354 | "partial symbol information"); | |
8e19ed76 | 4355 | } |
c906108c SS |
4356 | break; |
4357 | case DW_AT_language: | |
4358 | part_die->language = DW_UNSND (&attr); | |
4359 | break; | |
4360 | case DW_AT_external: | |
4361 | part_die->is_external = DW_UNSND (&attr); | |
4362 | break; | |
4363 | case DW_AT_declaration: | |
4364 | part_die->is_declaration = DW_UNSND (&attr); | |
4365 | break; | |
4366 | case DW_AT_type: | |
4367 | part_die->has_type = 1; | |
4368 | break; | |
4369 | case DW_AT_abstract_origin: | |
4370 | case DW_AT_specification: | |
4371 | found_spec_attr = 1; | |
4372 | spec_attr = attr; | |
4373 | break; | |
4374 | case DW_AT_sibling: | |
4375 | /* Ignore absolute siblings, they might point outside of | |
4376 | the current compile unit. */ | |
4377 | if (attr.form == DW_FORM_ref_addr) | |
4d3c2250 | 4378 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); |
c906108c SS |
4379 | else |
4380 | part_die->sibling = | |
e142c38c | 4381 | dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr, cu); |
c906108c SS |
4382 | break; |
4383 | default: | |
4384 | break; | |
4385 | } | |
4386 | } | |
4387 | ||
4388 | /* If we found a reference attribute and the die has no name, try | |
4389 | to find a name in the referred to die. */ | |
4390 | ||
4391 | if (found_spec_attr && part_die->name == NULL) | |
4392 | { | |
4393 | struct partial_die_info spec_die; | |
4394 | char *spec_ptr; | |
c906108c | 4395 | |
e142c38c DJ |
4396 | spec_ptr = dwarf_info_buffer |
4397 | + dwarf2_get_ref_die_offset (&spec_attr, cu); | |
e7c27a73 | 4398 | read_partial_die (&spec_die, abfd, spec_ptr, cu); |
c906108c SS |
4399 | if (spec_die.name) |
4400 | { | |
4401 | part_die->name = spec_die.name; | |
4402 | ||
4403 | /* Copy DW_AT_external attribute if it is set. */ | |
4404 | if (spec_die.is_external) | |
4405 | part_die->is_external = spec_die.is_external; | |
4406 | } | |
4407 | } | |
4408 | ||
4409 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
4410 | eliminate duplicate copies of functions and vtables and such. | |
4411 | The linker will arbitrarily choose one and discard the others. | |
4412 | The AT_*_pc values for such functions refer to local labels in | |
4413 | these sections. If the section from that file was discarded, the | |
4414 | labels are not in the output, so the relocs get a value of 0. | |
4415 | If this is a discarded function, mark the pc bounds as invalid, | |
4416 | so that GDB will ignore it. */ | |
4417 | if (has_low_pc_attr && has_high_pc_attr | |
4418 | && part_die->lowpc < part_die->highpc | |
4419 | && (part_die->lowpc != 0 | |
4420 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 4421 | part_die->has_pc_info = 1; |
c906108c SS |
4422 | return info_ptr; |
4423 | } | |
4424 | ||
639d11d3 DC |
4425 | /* Read the die from the .debug_info section buffer. Set DIEP to |
4426 | point to a newly allocated die with its information, except for its | |
4427 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
4428 | whether the die has children or not. */ | |
c906108c SS |
4429 | |
4430 | static char * | |
107d2387 | 4431 | read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr, |
e7c27a73 | 4432 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
4433 | { |
4434 | unsigned int abbrev_number, bytes_read, i, offset; | |
4435 | struct abbrev_info *abbrev; | |
4436 | struct die_info *die; | |
4437 | ||
4438 | offset = info_ptr - dwarf_info_buffer; | |
4439 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4440 | info_ptr += bytes_read; | |
4441 | if (!abbrev_number) | |
4442 | { | |
4443 | die = dwarf_alloc_die (); | |
4444 | die->tag = 0; | |
4445 | die->abbrev = abbrev_number; | |
4446 | die->type = NULL; | |
4447 | *diep = die; | |
639d11d3 | 4448 | *has_children = 0; |
c906108c SS |
4449 | return info_ptr; |
4450 | } | |
4451 | ||
e7c27a73 | 4452 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4453 | if (!abbrev) |
4454 | { | |
639d11d3 DC |
4455 | error ("Dwarf Error: could not find abbrev number %d [in module %s]", |
4456 | abbrev_number, | |
4457 | bfd_get_filename (abfd)); | |
c906108c SS |
4458 | } |
4459 | die = dwarf_alloc_die (); | |
4460 | die->offset = offset; | |
4461 | die->tag = abbrev->tag; | |
c906108c SS |
4462 | die->abbrev = abbrev_number; |
4463 | die->type = NULL; | |
4464 | ||
4465 | die->num_attrs = abbrev->num_attrs; | |
4466 | die->attrs = (struct attribute *) | |
4467 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
4468 | ||
4469 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4470 | { | |
4471 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 4472 | abfd, info_ptr, cu); |
c906108c SS |
4473 | } |
4474 | ||
4475 | *diep = die; | |
639d11d3 | 4476 | *has_children = abbrev->has_children; |
c906108c SS |
4477 | return info_ptr; |
4478 | } | |
4479 | ||
a8329558 | 4480 | /* Read an attribute value described by an attribute form. */ |
c906108c SS |
4481 | |
4482 | static char * | |
a8329558 | 4483 | read_attribute_value (struct attribute *attr, unsigned form, |
e7c27a73 DJ |
4484 | bfd *abfd, char *info_ptr, |
4485 | struct dwarf2_cu *cu) | |
c906108c | 4486 | { |
e7c27a73 | 4487 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4488 | unsigned int bytes_read; |
4489 | struct dwarf_block *blk; | |
4490 | ||
a8329558 KW |
4491 | attr->form = form; |
4492 | switch (form) | |
c906108c SS |
4493 | { |
4494 | case DW_FORM_addr: | |
4495 | case DW_FORM_ref_addr: | |
e7c27a73 | 4496 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 4497 | info_ptr += bytes_read; |
c906108c SS |
4498 | break; |
4499 | case DW_FORM_block2: | |
4500 | blk = dwarf_alloc_block (); | |
4501 | blk->size = read_2_bytes (abfd, info_ptr); | |
4502 | info_ptr += 2; | |
4503 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4504 | info_ptr += blk->size; | |
4505 | DW_BLOCK (attr) = blk; | |
4506 | break; | |
4507 | case DW_FORM_block4: | |
4508 | blk = dwarf_alloc_block (); | |
4509 | blk->size = read_4_bytes (abfd, info_ptr); | |
4510 | info_ptr += 4; | |
4511 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4512 | info_ptr += blk->size; | |
4513 | DW_BLOCK (attr) = blk; | |
4514 | break; | |
4515 | case DW_FORM_data2: | |
4516 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4517 | info_ptr += 2; | |
4518 | break; | |
4519 | case DW_FORM_data4: | |
4520 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4521 | info_ptr += 4; | |
4522 | break; | |
4523 | case DW_FORM_data8: | |
4524 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4525 | info_ptr += 8; | |
4526 | break; | |
4527 | case DW_FORM_string: | |
4528 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
4529 | info_ptr += bytes_read; | |
4530 | break; | |
4bdf3d34 JJ |
4531 | case DW_FORM_strp: |
4532 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
4533 | &bytes_read); | |
4534 | info_ptr += bytes_read; | |
4535 | break; | |
c906108c SS |
4536 | case DW_FORM_block: |
4537 | blk = dwarf_alloc_block (); | |
4538 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4539 | info_ptr += bytes_read; | |
4540 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4541 | info_ptr += blk->size; | |
4542 | DW_BLOCK (attr) = blk; | |
4543 | break; | |
4544 | case DW_FORM_block1: | |
4545 | blk = dwarf_alloc_block (); | |
4546 | blk->size = read_1_byte (abfd, info_ptr); | |
4547 | info_ptr += 1; | |
4548 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4549 | info_ptr += blk->size; | |
4550 | DW_BLOCK (attr) = blk; | |
4551 | break; | |
4552 | case DW_FORM_data1: | |
4553 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4554 | info_ptr += 1; | |
4555 | break; | |
4556 | case DW_FORM_flag: | |
4557 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4558 | info_ptr += 1; | |
4559 | break; | |
4560 | case DW_FORM_sdata: | |
4561 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
4562 | info_ptr += bytes_read; | |
4563 | break; | |
4564 | case DW_FORM_udata: | |
4565 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4566 | info_ptr += bytes_read; | |
4567 | break; | |
4568 | case DW_FORM_ref1: | |
4569 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4570 | info_ptr += 1; | |
4571 | break; | |
4572 | case DW_FORM_ref2: | |
4573 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4574 | info_ptr += 2; | |
4575 | break; | |
4576 | case DW_FORM_ref4: | |
4577 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4578 | info_ptr += 4; | |
4579 | break; | |
613e1657 KB |
4580 | case DW_FORM_ref8: |
4581 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4582 | info_ptr += 8; | |
4583 | break; | |
c906108c SS |
4584 | case DW_FORM_ref_udata: |
4585 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4586 | info_ptr += bytes_read; | |
4587 | break; | |
c906108c | 4588 | case DW_FORM_indirect: |
a8329558 KW |
4589 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4590 | info_ptr += bytes_read; | |
e7c27a73 | 4591 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 4592 | break; |
c906108c | 4593 | default: |
659b0389 ML |
4594 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", |
4595 | dwarf_form_name (form), | |
4596 | bfd_get_filename (abfd)); | |
c906108c SS |
4597 | } |
4598 | return info_ptr; | |
4599 | } | |
4600 | ||
a8329558 KW |
4601 | /* Read an attribute described by an abbreviated attribute. */ |
4602 | ||
4603 | static char * | |
4604 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, | |
e7c27a73 | 4605 | bfd *abfd, char *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
4606 | { |
4607 | attr->name = abbrev->name; | |
e7c27a73 | 4608 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
4609 | } |
4610 | ||
c906108c SS |
4611 | /* read dwarf information from a buffer */ |
4612 | ||
4613 | static unsigned int | |
fba45db2 | 4614 | read_1_byte (bfd *abfd, char *buf) |
c906108c SS |
4615 | { |
4616 | return bfd_get_8 (abfd, (bfd_byte *) buf); | |
4617 | } | |
4618 | ||
4619 | static int | |
fba45db2 | 4620 | read_1_signed_byte (bfd *abfd, char *buf) |
c906108c SS |
4621 | { |
4622 | return bfd_get_signed_8 (abfd, (bfd_byte *) buf); | |
4623 | } | |
4624 | ||
4625 | static unsigned int | |
fba45db2 | 4626 | read_2_bytes (bfd *abfd, char *buf) |
c906108c SS |
4627 | { |
4628 | return bfd_get_16 (abfd, (bfd_byte *) buf); | |
4629 | } | |
4630 | ||
4631 | static int | |
fba45db2 | 4632 | read_2_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4633 | { |
4634 | return bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4635 | } | |
4636 | ||
4637 | static unsigned int | |
fba45db2 | 4638 | read_4_bytes (bfd *abfd, char *buf) |
c906108c SS |
4639 | { |
4640 | return bfd_get_32 (abfd, (bfd_byte *) buf); | |
4641 | } | |
4642 | ||
4643 | static int | |
fba45db2 | 4644 | read_4_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4645 | { |
4646 | return bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4647 | } | |
4648 | ||
ce5d95e1 | 4649 | static unsigned long |
fba45db2 | 4650 | read_8_bytes (bfd *abfd, char *buf) |
c906108c SS |
4651 | { |
4652 | return bfd_get_64 (abfd, (bfd_byte *) buf); | |
4653 | } | |
4654 | ||
4655 | static CORE_ADDR | |
e7c27a73 | 4656 | read_address (bfd *abfd, char *buf, struct dwarf2_cu *cu, int *bytes_read) |
c906108c | 4657 | { |
e7c27a73 | 4658 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4659 | CORE_ADDR retval = 0; |
4660 | ||
107d2387 | 4661 | if (cu_header->signed_addr_p) |
c906108c | 4662 | { |
107d2387 AC |
4663 | switch (cu_header->addr_size) |
4664 | { | |
4665 | case 2: | |
4666 | retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4667 | break; | |
4668 | case 4: | |
4669 | retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4670 | break; | |
4671 | case 8: | |
4672 | retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf); | |
4673 | break; | |
4674 | default: | |
8e65ff28 | 4675 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4676 | "read_address: bad switch, signed [in module %s]", |
4677 | bfd_get_filename (abfd)); | |
107d2387 AC |
4678 | } |
4679 | } | |
4680 | else | |
4681 | { | |
4682 | switch (cu_header->addr_size) | |
4683 | { | |
4684 | case 2: | |
4685 | retval = bfd_get_16 (abfd, (bfd_byte *) buf); | |
4686 | break; | |
4687 | case 4: | |
4688 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4689 | break; | |
4690 | case 8: | |
4691 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4692 | break; | |
4693 | default: | |
8e65ff28 | 4694 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4695 | "read_address: bad switch, unsigned [in module %s]", |
4696 | bfd_get_filename (abfd)); | |
107d2387 | 4697 | } |
c906108c | 4698 | } |
64367e0a | 4699 | |
107d2387 AC |
4700 | *bytes_read = cu_header->addr_size; |
4701 | return retval; | |
c906108c SS |
4702 | } |
4703 | ||
f7ef9339 | 4704 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
4705 | specification allows the initial length to take up either 4 bytes |
4706 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
4707 | bytes describe the length and all offsets will be 8 bytes in length | |
4708 | instead of 4. | |
4709 | ||
f7ef9339 KB |
4710 | An older, non-standard 64-bit format is also handled by this |
4711 | function. The older format in question stores the initial length | |
4712 | as an 8-byte quantity without an escape value. Lengths greater | |
4713 | than 2^32 aren't very common which means that the initial 4 bytes | |
4714 | is almost always zero. Since a length value of zero doesn't make | |
4715 | sense for the 32-bit format, this initial zero can be considered to | |
4716 | be an escape value which indicates the presence of the older 64-bit | |
4717 | format. As written, the code can't detect (old format) lengths | |
4718 | greater than 4GB. If it becomes necessary to handle lengths somewhat | |
4719 | larger than 4GB, we could allow other small values (such as the | |
4720 | non-sensical values of 1, 2, and 3) to also be used as escape values | |
4721 | indicating the presence of the old format. | |
4722 | ||
613e1657 KB |
4723 | The value returned via bytes_read should be used to increment |
4724 | the relevant pointer after calling read_initial_length(). | |
4725 | ||
4726 | As a side effect, this function sets the fields initial_length_size | |
4727 | and offset_size in cu_header to the values appropriate for the | |
4728 | length field. (The format of the initial length field determines | |
4729 | the width of file offsets to be fetched later with fetch_offset().) | |
4730 | ||
4731 | [ Note: read_initial_length() and read_offset() are based on the | |
4732 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 4733 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
4734 | from: |
4735 | ||
f7ef9339 | 4736 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
4737 | |
4738 | This document is only a draft and is subject to change. (So beware.) | |
4739 | ||
f7ef9339 KB |
4740 | Details regarding the older, non-standard 64-bit format were |
4741 | determined empirically by examining 64-bit ELF files produced | |
4742 | by the SGI toolchain on an IRIX 6.5 machine. | |
4743 | ||
4744 | - Kevin, July 16, 2002 | |
613e1657 KB |
4745 | ] */ |
4746 | ||
4747 | static LONGEST | |
4748 | read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header, | |
4749 | int *bytes_read) | |
4750 | { | |
4751 | LONGEST retval = 0; | |
4752 | ||
4753 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4754 | ||
4755 | if (retval == 0xffffffff) | |
4756 | { | |
4757 | retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4); | |
4758 | *bytes_read = 12; | |
4759 | if (cu_header != NULL) | |
4760 | { | |
4761 | cu_header->initial_length_size = 12; | |
4762 | cu_header->offset_size = 8; | |
4763 | } | |
4764 | } | |
f7ef9339 KB |
4765 | else if (retval == 0) |
4766 | { | |
4767 | /* Handle (non-standard) 64-bit DWARF2 formats such as that used | |
4768 | by IRIX. */ | |
4769 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4770 | *bytes_read = 8; | |
4771 | if (cu_header != NULL) | |
4772 | { | |
4773 | cu_header->initial_length_size = 8; | |
4774 | cu_header->offset_size = 8; | |
4775 | } | |
4776 | } | |
613e1657 KB |
4777 | else |
4778 | { | |
4779 | *bytes_read = 4; | |
4780 | if (cu_header != NULL) | |
4781 | { | |
4782 | cu_header->initial_length_size = 4; | |
4783 | cu_header->offset_size = 4; | |
4784 | } | |
4785 | } | |
4786 | ||
4787 | return retval; | |
4788 | } | |
4789 | ||
4790 | /* Read an offset from the data stream. The size of the offset is | |
4791 | given by cu_header->offset_size. */ | |
4792 | ||
4793 | static LONGEST | |
4794 | read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header, | |
4795 | int *bytes_read) | |
4796 | { | |
4797 | LONGEST retval = 0; | |
4798 | ||
4799 | switch (cu_header->offset_size) | |
4800 | { | |
4801 | case 4: | |
4802 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4803 | *bytes_read = 4; | |
4804 | break; | |
4805 | case 8: | |
4806 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4807 | *bytes_read = 8; | |
4808 | break; | |
4809 | default: | |
8e65ff28 | 4810 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4811 | "read_offset: bad switch [in module %s]", |
4812 | bfd_get_filename (abfd)); | |
613e1657 KB |
4813 | } |
4814 | ||
4815 | return retval; | |
4816 | } | |
4817 | ||
c906108c | 4818 | static char * |
fba45db2 | 4819 | read_n_bytes (bfd *abfd, char *buf, unsigned int size) |
c906108c SS |
4820 | { |
4821 | /* If the size of a host char is 8 bits, we can return a pointer | |
4822 | to the buffer, otherwise we have to copy the data to a buffer | |
4823 | allocated on the temporary obstack. */ | |
4bdf3d34 | 4824 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 4825 | return buf; |
c906108c SS |
4826 | } |
4827 | ||
4828 | static char * | |
fba45db2 | 4829 | read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
4830 | { |
4831 | /* If the size of a host char is 8 bits, we can return a pointer | |
4832 | to the string, otherwise we have to copy the string to a buffer | |
4833 | allocated on the temporary obstack. */ | |
4bdf3d34 | 4834 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
4835 | if (*buf == '\0') |
4836 | { | |
4837 | *bytes_read_ptr = 1; | |
4838 | return NULL; | |
4839 | } | |
4840 | *bytes_read_ptr = strlen (buf) + 1; | |
4841 | return buf; | |
4bdf3d34 JJ |
4842 | } |
4843 | ||
4844 | static char * | |
4845 | read_indirect_string (bfd *abfd, char *buf, | |
4846 | const struct comp_unit_head *cu_header, | |
4847 | unsigned int *bytes_read_ptr) | |
4848 | { | |
4849 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
4850 | (int *) bytes_read_ptr); | |
c906108c | 4851 | |
4bdf3d34 | 4852 | if (dwarf_str_buffer == NULL) |
c906108c | 4853 | { |
659b0389 ML |
4854 | error ("DW_FORM_strp used without .debug_str section [in module %s]", |
4855 | bfd_get_filename (abfd)); | |
4bdf3d34 | 4856 | return NULL; |
c906108c | 4857 | } |
4bdf3d34 | 4858 | if (str_offset >= dwarf_str_size) |
c906108c | 4859 | { |
659b0389 ML |
4860 | error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]", |
4861 | bfd_get_filename (abfd)); | |
c906108c SS |
4862 | return NULL; |
4863 | } | |
4bdf3d34 JJ |
4864 | gdb_assert (HOST_CHAR_BIT == 8); |
4865 | if (dwarf_str_buffer[str_offset] == '\0') | |
4866 | return NULL; | |
4867 | return dwarf_str_buffer + str_offset; | |
c906108c SS |
4868 | } |
4869 | ||
ce5d95e1 | 4870 | static unsigned long |
fba45db2 | 4871 | read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 4872 | { |
ce5d95e1 JB |
4873 | unsigned long result; |
4874 | unsigned int num_read; | |
c906108c SS |
4875 | int i, shift; |
4876 | unsigned char byte; | |
4877 | ||
4878 | result = 0; | |
4879 | shift = 0; | |
4880 | num_read = 0; | |
4881 | i = 0; | |
4882 | while (1) | |
4883 | { | |
4884 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
4885 | buf++; | |
4886 | num_read++; | |
ce5d95e1 | 4887 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
4888 | if ((byte & 128) == 0) |
4889 | { | |
4890 | break; | |
4891 | } | |
4892 | shift += 7; | |
4893 | } | |
4894 | *bytes_read_ptr = num_read; | |
4895 | return result; | |
4896 | } | |
4897 | ||
ce5d95e1 | 4898 | static long |
fba45db2 | 4899 | read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 4900 | { |
ce5d95e1 | 4901 | long result; |
c906108c SS |
4902 | int i, shift, size, num_read; |
4903 | unsigned char byte; | |
4904 | ||
4905 | result = 0; | |
4906 | shift = 0; | |
4907 | size = 32; | |
4908 | num_read = 0; | |
4909 | i = 0; | |
4910 | while (1) | |
4911 | { | |
4912 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
4913 | buf++; | |
4914 | num_read++; | |
ce5d95e1 | 4915 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
4916 | shift += 7; |
4917 | if ((byte & 128) == 0) | |
4918 | { | |
4919 | break; | |
4920 | } | |
4921 | } | |
4922 | if ((shift < size) && (byte & 0x40)) | |
4923 | { | |
4924 | result |= -(1 << shift); | |
4925 | } | |
4926 | *bytes_read_ptr = num_read; | |
4927 | return result; | |
4928 | } | |
4929 | ||
4930 | static void | |
e142c38c | 4931 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
4932 | { |
4933 | switch (lang) | |
4934 | { | |
4935 | case DW_LANG_C89: | |
4936 | case DW_LANG_C: | |
e142c38c | 4937 | cu->language = language_c; |
c906108c SS |
4938 | break; |
4939 | case DW_LANG_C_plus_plus: | |
e142c38c | 4940 | cu->language = language_cplus; |
c906108c SS |
4941 | break; |
4942 | case DW_LANG_Fortran77: | |
4943 | case DW_LANG_Fortran90: | |
b21b22e0 | 4944 | case DW_LANG_Fortran95: |
e142c38c | 4945 | cu->language = language_fortran; |
c906108c SS |
4946 | break; |
4947 | case DW_LANG_Mips_Assembler: | |
e142c38c | 4948 | cu->language = language_asm; |
c906108c | 4949 | break; |
bebd888e | 4950 | case DW_LANG_Java: |
e142c38c | 4951 | cu->language = language_java; |
bebd888e | 4952 | break; |
c906108c | 4953 | case DW_LANG_Ada83: |
8aaf0b47 | 4954 | case DW_LANG_Ada95: |
c906108c SS |
4955 | case DW_LANG_Cobol74: |
4956 | case DW_LANG_Cobol85: | |
4957 | case DW_LANG_Pascal83: | |
4958 | case DW_LANG_Modula2: | |
4959 | default: | |
e142c38c | 4960 | cu->language = language_minimal; |
c906108c SS |
4961 | break; |
4962 | } | |
e142c38c | 4963 | cu->language_defn = language_def (cu->language); |
c906108c SS |
4964 | } |
4965 | ||
4966 | /* Return the named attribute or NULL if not there. */ | |
4967 | ||
4968 | static struct attribute * | |
e142c38c | 4969 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
4970 | { |
4971 | unsigned int i; | |
4972 | struct attribute *spec = NULL; | |
4973 | ||
4974 | for (i = 0; i < die->num_attrs; ++i) | |
4975 | { | |
4976 | if (die->attrs[i].name == name) | |
4977 | { | |
4978 | return &die->attrs[i]; | |
4979 | } | |
4980 | if (die->attrs[i].name == DW_AT_specification | |
4981 | || die->attrs[i].name == DW_AT_abstract_origin) | |
4982 | spec = &die->attrs[i]; | |
4983 | } | |
4984 | if (spec) | |
4985 | { | |
4986 | struct die_info *ref_die = | |
e142c38c | 4987 | follow_die_ref (dwarf2_get_ref_die_offset (spec, cu)); |
c906108c SS |
4988 | |
4989 | if (ref_die) | |
e142c38c | 4990 | return dwarf2_attr (ref_die, name, cu); |
c906108c | 4991 | } |
c5aa993b | 4992 | |
c906108c SS |
4993 | return NULL; |
4994 | } | |
4995 | ||
3ca72b44 | 4996 | static int |
e142c38c | 4997 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 4998 | { |
e142c38c DJ |
4999 | return (dwarf2_attr (die, DW_AT_declaration, cu) |
5000 | && ! dwarf2_attr (die, DW_AT_specification, cu)); | |
3ca72b44 AC |
5001 | } |
5002 | ||
63d06c5c DC |
5003 | /* Return the die giving the specification for DIE, if there is |
5004 | one. */ | |
5005 | ||
5006 | static struct die_info * | |
e142c38c | 5007 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 5008 | { |
e142c38c | 5009 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
5010 | |
5011 | if (spec_attr == NULL) | |
5012 | return NULL; | |
5013 | else | |
e142c38c | 5014 | return follow_die_ref (dwarf2_get_ref_die_offset (spec_attr, cu)); |
63d06c5c | 5015 | } |
c906108c | 5016 | |
debd256d JB |
5017 | /* Free the line_header structure *LH, and any arrays and strings it |
5018 | refers to. */ | |
5019 | static void | |
5020 | free_line_header (struct line_header *lh) | |
5021 | { | |
5022 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 5023 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
5024 | |
5025 | /* Remember that all the lh->file_names[i].name pointers are | |
5026 | pointers into debug_line_buffer, and don't need to be freed. */ | |
5027 | if (lh->file_names) | |
a8bc7b56 | 5028 | xfree (lh->file_names); |
debd256d JB |
5029 | |
5030 | /* Similarly for the include directory names. */ | |
5031 | if (lh->include_dirs) | |
a8bc7b56 | 5032 | xfree (lh->include_dirs); |
debd256d | 5033 | |
a8bc7b56 | 5034 | xfree (lh); |
debd256d JB |
5035 | } |
5036 | ||
5037 | ||
5038 | /* Add an entry to LH's include directory table. */ | |
5039 | static void | |
5040 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 5041 | { |
debd256d JB |
5042 | /* Grow the array if necessary. */ |
5043 | if (lh->include_dirs_size == 0) | |
c5aa993b | 5044 | { |
debd256d JB |
5045 | lh->include_dirs_size = 1; /* for testing */ |
5046 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
5047 | * sizeof (*lh->include_dirs)); | |
5048 | } | |
5049 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
5050 | { | |
5051 | lh->include_dirs_size *= 2; | |
5052 | lh->include_dirs = xrealloc (lh->include_dirs, | |
5053 | (lh->include_dirs_size | |
5054 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 5055 | } |
c906108c | 5056 | |
debd256d JB |
5057 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
5058 | } | |
5059 | ||
5060 | ||
5061 | /* Add an entry to LH's file name table. */ | |
5062 | static void | |
5063 | add_file_name (struct line_header *lh, | |
5064 | char *name, | |
5065 | unsigned int dir_index, | |
5066 | unsigned int mod_time, | |
5067 | unsigned int length) | |
5068 | { | |
5069 | struct file_entry *fe; | |
5070 | ||
5071 | /* Grow the array if necessary. */ | |
5072 | if (lh->file_names_size == 0) | |
5073 | { | |
5074 | lh->file_names_size = 1; /* for testing */ | |
5075 | lh->file_names = xmalloc (lh->file_names_size | |
5076 | * sizeof (*lh->file_names)); | |
5077 | } | |
5078 | else if (lh->num_file_names >= lh->file_names_size) | |
5079 | { | |
5080 | lh->file_names_size *= 2; | |
5081 | lh->file_names = xrealloc (lh->file_names, | |
5082 | (lh->file_names_size | |
5083 | * sizeof (*lh->file_names))); | |
5084 | } | |
5085 | ||
5086 | fe = &lh->file_names[lh->num_file_names++]; | |
5087 | fe->name = name; | |
5088 | fe->dir_index = dir_index; | |
5089 | fe->mod_time = mod_time; | |
5090 | fe->length = length; | |
5091 | } | |
5092 | ||
5093 | ||
5094 | /* Read the statement program header starting at OFFSET in | |
5095 | dwarf_line_buffer, according to the endianness of ABFD. Return a | |
5096 | pointer to a struct line_header, allocated using xmalloc. | |
5097 | ||
5098 | NOTE: the strings in the include directory and file name tables of | |
5099 | the returned object point into debug_line_buffer, and must not be | |
5100 | freed. */ | |
5101 | static struct line_header * | |
5102 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 5103 | struct dwarf2_cu *cu) |
debd256d JB |
5104 | { |
5105 | struct cleanup *back_to; | |
5106 | struct line_header *lh; | |
5107 | char *line_ptr; | |
5108 | int bytes_read; | |
5109 | int i; | |
5110 | char *cur_dir, *cur_file; | |
5111 | ||
5112 | if (dwarf_line_buffer == NULL) | |
5113 | { | |
4d3c2250 | 5114 | complaint (&symfile_complaints, "missing .debug_line section"); |
debd256d JB |
5115 | return 0; |
5116 | } | |
5117 | ||
5118 | /* Make sure that at least there's room for the total_length field. That | |
5119 | could be 12 bytes long, but we're just going to fudge that. */ | |
5120 | if (offset + 4 >= dwarf_line_size) | |
5121 | { | |
4d3c2250 | 5122 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5123 | return 0; |
5124 | } | |
5125 | ||
5126 | lh = xmalloc (sizeof (*lh)); | |
5127 | memset (lh, 0, sizeof (*lh)); | |
5128 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
5129 | (void *) lh); | |
5130 | ||
5131 | line_ptr = dwarf_line_buffer + offset; | |
5132 | ||
5133 | /* read in the header */ | |
5134 | lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read); | |
5135 | line_ptr += bytes_read; | |
5136 | if (line_ptr + lh->total_length > dwarf_line_buffer + dwarf_line_size) | |
5137 | { | |
4d3c2250 | 5138 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5139 | return 0; |
5140 | } | |
5141 | lh->statement_program_end = line_ptr + lh->total_length; | |
5142 | lh->version = read_2_bytes (abfd, line_ptr); | |
5143 | line_ptr += 2; | |
e7c27a73 | 5144 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
5145 | line_ptr += bytes_read; |
5146 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
5147 | line_ptr += 1; | |
5148 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
5149 | line_ptr += 1; | |
5150 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
5151 | line_ptr += 1; | |
5152 | lh->line_range = read_1_byte (abfd, line_ptr); | |
5153 | line_ptr += 1; | |
5154 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
5155 | line_ptr += 1; | |
5156 | lh->standard_opcode_lengths | |
5157 | = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char)); | |
5158 | ||
5159 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
5160 | for (i = 1; i < lh->opcode_base; ++i) | |
5161 | { | |
5162 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
5163 | line_ptr += 1; | |
5164 | } | |
5165 | ||
5166 | /* Read directory table */ | |
5167 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5168 | { | |
5169 | line_ptr += bytes_read; | |
5170 | add_include_dir (lh, cur_dir); | |
5171 | } | |
5172 | line_ptr += bytes_read; | |
5173 | ||
5174 | /* Read file name table */ | |
5175 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5176 | { | |
5177 | unsigned int dir_index, mod_time, length; | |
5178 | ||
5179 | line_ptr += bytes_read; | |
5180 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5181 | line_ptr += bytes_read; | |
5182 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5183 | line_ptr += bytes_read; | |
5184 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5185 | line_ptr += bytes_read; | |
5186 | ||
5187 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5188 | } | |
5189 | line_ptr += bytes_read; | |
5190 | lh->statement_program_start = line_ptr; | |
5191 | ||
5192 | if (line_ptr > dwarf_line_buffer + dwarf_line_size) | |
4d3c2250 KB |
5193 | complaint (&symfile_complaints, |
5194 | "line number info header doesn't fit in `.debug_line' section"); | |
debd256d JB |
5195 | |
5196 | discard_cleanups (back_to); | |
5197 | return lh; | |
5198 | } | |
c906108c | 5199 | |
5fb290d7 DJ |
5200 | /* This function exists to work around a bug in certain compilers |
5201 | (particularly GCC 2.95), in which the first line number marker of a | |
5202 | function does not show up until after the prologue, right before | |
5203 | the second line number marker. This function shifts ADDRESS down | |
5204 | to the beginning of the function if necessary, and is called on | |
5205 | addresses passed to record_line. */ | |
5206 | ||
5207 | static CORE_ADDR | |
e142c38c | 5208 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
5209 | { |
5210 | struct function_range *fn; | |
5211 | ||
5212 | /* Find the function_range containing address. */ | |
e142c38c | 5213 | if (!cu->first_fn) |
5fb290d7 DJ |
5214 | return address; |
5215 | ||
e142c38c DJ |
5216 | if (!cu->cached_fn) |
5217 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 5218 | |
e142c38c | 5219 | fn = cu->cached_fn; |
5fb290d7 DJ |
5220 | while (fn) |
5221 | if (fn->lowpc <= address && fn->highpc > address) | |
5222 | goto found; | |
5223 | else | |
5224 | fn = fn->next; | |
5225 | ||
e142c38c DJ |
5226 | fn = cu->first_fn; |
5227 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
5228 | if (fn->lowpc <= address && fn->highpc > address) |
5229 | goto found; | |
5230 | else | |
5231 | fn = fn->next; | |
5232 | ||
5233 | return address; | |
5234 | ||
5235 | found: | |
5236 | if (fn->seen_line) | |
5237 | return address; | |
5238 | if (address != fn->lowpc) | |
4d3c2250 KB |
5239 | complaint (&symfile_complaints, |
5240 | "misplaced first line number at 0x%lx for '%s'", | |
5241 | (unsigned long) address, fn->name); | |
5fb290d7 DJ |
5242 | fn->seen_line = 1; |
5243 | return fn->lowpc; | |
5244 | } | |
5245 | ||
debd256d JB |
5246 | /* Decode the line number information for the compilation unit whose |
5247 | line number info is at OFFSET in the .debug_line section. | |
5248 | The compilation directory of the file is passed in COMP_DIR. */ | |
5249 | ||
c906108c | 5250 | static void |
debd256d | 5251 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
e7c27a73 | 5252 | struct dwarf2_cu *cu) |
c906108c SS |
5253 | { |
5254 | char *line_ptr; | |
5255 | char *line_end; | |
e7c27a73 | 5256 | unsigned int bytes_read; |
c906108c | 5257 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
5258 | CORE_ADDR baseaddr; |
5259 | struct objfile *objfile = cu->objfile; | |
5260 | ||
5261 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5262 | |
debd256d JB |
5263 | line_ptr = lh->statement_program_start; |
5264 | line_end = lh->statement_program_end; | |
c906108c SS |
5265 | |
5266 | /* Read the statement sequences until there's nothing left. */ | |
5267 | while (line_ptr < line_end) | |
5268 | { | |
5269 | /* state machine registers */ | |
5270 | CORE_ADDR address = 0; | |
5271 | unsigned int file = 1; | |
5272 | unsigned int line = 1; | |
5273 | unsigned int column = 0; | |
debd256d | 5274 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
5275 | int basic_block = 0; |
5276 | int end_sequence = 0; | |
5277 | ||
5278 | /* Start a subfile for the current file of the state machine. */ | |
debd256d | 5279 | if (lh->num_file_names >= file) |
c906108c | 5280 | { |
debd256d JB |
5281 | /* lh->include_dirs and lh->file_names are 0-based, but the |
5282 | directory and file name numbers in the statement program | |
5283 | are 1-based. */ | |
5284 | struct file_entry *fe = &lh->file_names[file - 1]; | |
5285 | char *dir; | |
5286 | if (fe->dir_index) | |
5287 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5288 | else | |
5289 | dir = comp_dir; | |
5290 | dwarf2_start_subfile (fe->name, dir); | |
c906108c SS |
5291 | } |
5292 | ||
5293 | /* Decode the table. */ | |
c5aa993b | 5294 | while (!end_sequence) |
c906108c SS |
5295 | { |
5296 | op_code = read_1_byte (abfd, line_ptr); | |
5297 | line_ptr += 1; | |
9aa1fe7e | 5298 | |
debd256d | 5299 | if (op_code >= lh->opcode_base) |
9aa1fe7e | 5300 | { /* Special operand. */ |
debd256d JB |
5301 | adj_opcode = op_code - lh->opcode_base; |
5302 | address += (adj_opcode / lh->line_range) | |
5303 | * lh->minimum_instruction_length; | |
5304 | line += lh->line_base + (adj_opcode % lh->line_range); | |
9aa1fe7e | 5305 | /* append row to matrix using current values */ |
ddf9f258 | 5306 | record_line (current_subfile, line, |
e142c38c | 5307 | check_cu_functions (address, cu)); |
9aa1fe7e GK |
5308 | basic_block = 1; |
5309 | } | |
5310 | else switch (op_code) | |
c906108c SS |
5311 | { |
5312 | case DW_LNS_extended_op: | |
5313 | line_ptr += 1; /* ignore length */ | |
5314 | extended_op = read_1_byte (abfd, line_ptr); | |
5315 | line_ptr += 1; | |
5316 | switch (extended_op) | |
5317 | { | |
5318 | case DW_LNE_end_sequence: | |
5319 | end_sequence = 1; | |
5fb290d7 | 5320 | record_line (current_subfile, 0, address); |
c906108c SS |
5321 | break; |
5322 | case DW_LNE_set_address: | |
e7c27a73 | 5323 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
5324 | line_ptr += bytes_read; |
5325 | address += baseaddr; | |
c906108c SS |
5326 | break; |
5327 | case DW_LNE_define_file: | |
debd256d JB |
5328 | { |
5329 | char *cur_file; | |
5330 | unsigned int dir_index, mod_time, length; | |
5331 | ||
5332 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
5333 | line_ptr += bytes_read; | |
5334 | dir_index = | |
5335 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5336 | line_ptr += bytes_read; | |
5337 | mod_time = | |
5338 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5339 | line_ptr += bytes_read; | |
5340 | length = | |
5341 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5342 | line_ptr += bytes_read; | |
5343 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5344 | } | |
c906108c SS |
5345 | break; |
5346 | default: | |
4d3c2250 KB |
5347 | complaint (&symfile_complaints, |
5348 | "mangled .debug_line section"); | |
debd256d | 5349 | return; |
c906108c SS |
5350 | } |
5351 | break; | |
5352 | case DW_LNS_copy: | |
ddf9f258 | 5353 | record_line (current_subfile, line, |
e142c38c | 5354 | check_cu_functions (address, cu)); |
c906108c SS |
5355 | basic_block = 0; |
5356 | break; | |
5357 | case DW_LNS_advance_pc: | |
debd256d | 5358 | address += lh->minimum_instruction_length |
c906108c SS |
5359 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
5360 | line_ptr += bytes_read; | |
5361 | break; | |
5362 | case DW_LNS_advance_line: | |
5363 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
5364 | line_ptr += bytes_read; | |
5365 | break; | |
5366 | case DW_LNS_set_file: | |
debd256d JB |
5367 | { |
5368 | /* lh->include_dirs and lh->file_names are 0-based, | |
5369 | but the directory and file name numbers in the | |
5370 | statement program are 1-based. */ | |
5371 | struct file_entry *fe; | |
5372 | char *dir; | |
5373 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5374 | line_ptr += bytes_read; | |
5375 | fe = &lh->file_names[file - 1]; | |
5376 | if (fe->dir_index) | |
5377 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5378 | else | |
5379 | dir = comp_dir; | |
5380 | dwarf2_start_subfile (fe->name, dir); | |
5381 | } | |
c906108c SS |
5382 | break; |
5383 | case DW_LNS_set_column: | |
5384 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5385 | line_ptr += bytes_read; | |
5386 | break; | |
5387 | case DW_LNS_negate_stmt: | |
5388 | is_stmt = (!is_stmt); | |
5389 | break; | |
5390 | case DW_LNS_set_basic_block: | |
5391 | basic_block = 1; | |
5392 | break; | |
c2c6d25f JM |
5393 | /* Add to the address register of the state machine the |
5394 | address increment value corresponding to special opcode | |
5395 | 255. Ie, this value is scaled by the minimum instruction | |
5396 | length since special opcode 255 would have scaled the | |
5397 | the increment. */ | |
c906108c | 5398 | case DW_LNS_const_add_pc: |
debd256d JB |
5399 | address += (lh->minimum_instruction_length |
5400 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
5401 | break; |
5402 | case DW_LNS_fixed_advance_pc: | |
5403 | address += read_2_bytes (abfd, line_ptr); | |
5404 | line_ptr += 2; | |
5405 | break; | |
9aa1fe7e GK |
5406 | default: |
5407 | { /* Unknown standard opcode, ignore it. */ | |
5408 | int i; | |
debd256d | 5409 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
5410 | { |
5411 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5412 | line_ptr += bytes_read; | |
5413 | } | |
5414 | } | |
c906108c SS |
5415 | } |
5416 | } | |
5417 | } | |
c906108c SS |
5418 | } |
5419 | ||
5420 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
5421 | DIRNAME the name of the source directory which contains FILENAME | |
5422 | or NULL if not known. | |
5423 | This routine tries to keep line numbers from identical absolute and | |
5424 | relative file names in a common subfile. | |
5425 | ||
5426 | Using the `list' example from the GDB testsuite, which resides in | |
5427 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
5428 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
5429 | ||
c5aa993b JM |
5430 | DW_AT_name: /srcdir/list0.c |
5431 | DW_AT_comp_dir: /compdir | |
357e46e7 | 5432 | files.files[0].name: list0.h |
c5aa993b | 5433 | files.files[0].dir: /srcdir |
357e46e7 | 5434 | files.files[1].name: list0.c |
c5aa993b | 5435 | files.files[1].dir: /srcdir |
c906108c SS |
5436 | |
5437 | The line number information for list0.c has to end up in a single | |
5438 | subfile, so that `break /srcdir/list0.c:1' works as expected. */ | |
5439 | ||
5440 | static void | |
fba45db2 | 5441 | dwarf2_start_subfile (char *filename, char *dirname) |
c906108c SS |
5442 | { |
5443 | /* If the filename isn't absolute, try to match an existing subfile | |
5444 | with the full pathname. */ | |
5445 | ||
d5166ae1 | 5446 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
c906108c SS |
5447 | { |
5448 | struct subfile *subfile; | |
5449 | char *fullname = concat (dirname, "/", filename, NULL); | |
5450 | ||
5451 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
5452 | { | |
d5166ae1 | 5453 | if (FILENAME_CMP (subfile->name, fullname) == 0) |
c906108c SS |
5454 | { |
5455 | current_subfile = subfile; | |
b8c9b27d | 5456 | xfree (fullname); |
c906108c SS |
5457 | return; |
5458 | } | |
5459 | } | |
b8c9b27d | 5460 | xfree (fullname); |
c906108c SS |
5461 | } |
5462 | start_subfile (filename, dirname); | |
5463 | } | |
5464 | ||
4c2df51b DJ |
5465 | static void |
5466 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 5467 | struct dwarf2_cu *cu) |
4c2df51b | 5468 | { |
e7c27a73 DJ |
5469 | struct objfile *objfile = cu->objfile; |
5470 | struct comp_unit_head *cu_header = &cu->header; | |
5471 | ||
4c2df51b DJ |
5472 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
5473 | code here to turn a symbol with DW_AT_external and a | |
5474 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
5475 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
5476 | with some versions of binutils) where shared libraries could have | |
5477 | relocations against symbols in their debug information - the | |
5478 | minimal symbol would have the right address, but the debug info | |
5479 | would not. It's no longer necessary, because we will explicitly | |
5480 | apply relocations when we read in the debug information now. */ | |
5481 | ||
5482 | /* A DW_AT_location attribute with no contents indicates that a | |
5483 | variable has been optimized away. */ | |
5484 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
5485 | { | |
5486 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
5487 | return; | |
5488 | } | |
5489 | ||
5490 | /* Handle one degenerate form of location expression specially, to | |
5491 | preserve GDB's previous behavior when section offsets are | |
5492 | specified. If this is just a DW_OP_addr then mark this symbol | |
5493 | as LOC_STATIC. */ | |
5494 | ||
5495 | if (attr_form_is_block (attr) | |
5496 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
5497 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
5498 | { | |
5499 | int dummy; | |
5500 | ||
5501 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 5502 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
5503 | fixup_symbol_section (sym, objfile); |
5504 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
5505 | SYMBOL_SECTION (sym)); | |
5506 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
5507 | return; | |
5508 | } | |
5509 | ||
5510 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
5511 | expression evaluator, and use LOC_COMPUTED only when necessary | |
5512 | (i.e. when the value of a register or memory location is | |
5513 | referenced, or a thread-local block, etc.). Then again, it might | |
5514 | not be worthwhile. I'm assuming that it isn't unless performance | |
5515 | or memory numbers show me otherwise. */ | |
5516 | ||
e7c27a73 | 5517 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
5518 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
5519 | } | |
5520 | ||
c906108c SS |
5521 | /* Given a pointer to a DWARF information entry, figure out if we need |
5522 | to make a symbol table entry for it, and if so, create a new entry | |
5523 | and return a pointer to it. | |
5524 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 5525 | used the passed type. */ |
c906108c SS |
5526 | |
5527 | static struct symbol * | |
e7c27a73 | 5528 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 5529 | { |
e7c27a73 | 5530 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5531 | struct symbol *sym = NULL; |
5532 | char *name; | |
5533 | struct attribute *attr = NULL; | |
5534 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
5535 | CORE_ADDR baseaddr; |
5536 | ||
5537 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5538 | |
5c4e30ca | 5539 | if (die->tag != DW_TAG_namespace) |
e142c38c | 5540 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
5541 | else |
5542 | name = TYPE_NAME (type); | |
5543 | ||
c906108c SS |
5544 | if (name) |
5545 | { | |
4a146b47 | 5546 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
5547 | sizeof (struct symbol)); |
5548 | OBJSTAT (objfile, n_syms++); | |
5549 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
5550 | |
5551 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 5552 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 5553 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
5554 | |
5555 | /* Default assumptions. | |
c5aa993b | 5556 | Use the passed type or decode it from the die. */ |
176620f1 | 5557 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
5558 | SYMBOL_CLASS (sym) = LOC_STATIC; |
5559 | if (type != NULL) | |
5560 | SYMBOL_TYPE (sym) = type; | |
5561 | else | |
e7c27a73 | 5562 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 5563 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
5564 | if (attr) |
5565 | { | |
5566 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
5567 | } | |
c906108c SS |
5568 | switch (die->tag) |
5569 | { | |
5570 | case DW_TAG_label: | |
e142c38c | 5571 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
5572 | if (attr) |
5573 | { | |
5574 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
5575 | } | |
5576 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
5577 | break; | |
5578 | case DW_TAG_subprogram: | |
5579 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
5580 | finish_block. */ | |
5581 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 5582 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5583 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5584 | { | |
5585 | add_symbol_to_list (sym, &global_symbols); | |
5586 | } | |
5587 | else | |
5588 | { | |
e142c38c | 5589 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5590 | } |
5591 | break; | |
5592 | case DW_TAG_variable: | |
5593 | /* Compilation with minimal debug info may result in variables | |
5594 | with missing type entries. Change the misleading `void' type | |
5595 | to something sensible. */ | |
5596 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
5597 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
5598 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5599 | "<variable, no debug info>", | |
5600 | objfile); | |
e142c38c | 5601 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5602 | if (attr) |
5603 | { | |
e7c27a73 | 5604 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 5605 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5606 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5607 | add_symbol_to_list (sym, &global_symbols); | |
5608 | else | |
e142c38c | 5609 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5610 | break; |
5611 | } | |
e142c38c | 5612 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5613 | if (attr) |
5614 | { | |
e7c27a73 | 5615 | var_decode_location (attr, sym, cu); |
e142c38c | 5616 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5617 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 5618 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 5619 | else |
e142c38c | 5620 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5621 | } |
5622 | else | |
5623 | { | |
5624 | /* We do not know the address of this symbol. | |
c5aa993b JM |
5625 | If it is an external symbol and we have type information |
5626 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
5627 | The address of the variable will then be determined from | |
5628 | the minimal symbol table whenever the variable is | |
5629 | referenced. */ | |
e142c38c | 5630 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5631 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 5632 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
5633 | { |
5634 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
5635 | add_symbol_to_list (sym, &global_symbols); | |
5636 | } | |
5637 | } | |
5638 | break; | |
5639 | case DW_TAG_formal_parameter: | |
e142c38c | 5640 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5641 | if (attr) |
5642 | { | |
e7c27a73 | 5643 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
5644 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
5645 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
5646 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 5647 | } |
e142c38c | 5648 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5649 | if (attr) |
5650 | { | |
e7c27a73 | 5651 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5652 | } |
e142c38c | 5653 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5654 | break; |
5655 | case DW_TAG_unspecified_parameters: | |
5656 | /* From varargs functions; gdb doesn't seem to have any | |
5657 | interest in this information, so just ignore it for now. | |
5658 | (FIXME?) */ | |
5659 | break; | |
5660 | case DW_TAG_class_type: | |
5661 | case DW_TAG_structure_type: | |
5662 | case DW_TAG_union_type: | |
5663 | case DW_TAG_enumeration_type: | |
5664 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 5665 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 5666 | |
63d06c5c DC |
5667 | /* Make sure that the symbol includes appropriate enclosing |
5668 | classes/namespaces in its name. These are calculated in | |
5669 | read_structure_scope, and the correct name is saved in | |
5670 | the type. */ | |
5671 | ||
e142c38c | 5672 | if (cu->language == language_cplus) |
c906108c | 5673 | { |
63d06c5c DC |
5674 | struct type *type = SYMBOL_TYPE (sym); |
5675 | ||
5676 | if (TYPE_TAG_NAME (type) != NULL) | |
5677 | { | |
5678 | /* FIXME: carlton/2003-11-10: Should this use | |
5679 | SYMBOL_SET_NAMES instead? (The same problem also | |
5680 | arises a further down in the function.) */ | |
5681 | SYMBOL_LINKAGE_NAME (sym) | |
5682 | = obsavestring (TYPE_TAG_NAME (type), | |
5683 | strlen (TYPE_TAG_NAME (type)), | |
4a146b47 | 5684 | &objfile->objfile_obstack); |
63d06c5c | 5685 | } |
c906108c | 5686 | } |
63d06c5c DC |
5687 | |
5688 | { | |
5689 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't | |
5690 | really ever be static objects: otherwise, if you try | |
5691 | to, say, break of a class's method and you're in a file | |
5692 | which doesn't mention that class, it won't work unless | |
5693 | the check for all static symbols in lookup_symbol_aux | |
5694 | saves you. See the OtherFileClass tests in | |
5695 | gdb.c++/namespace.exp. */ | |
5696 | ||
5697 | struct pending **list_to_add; | |
5698 | ||
e142c38c DJ |
5699 | list_to_add = (cu->list_in_scope == &file_symbols |
5700 | && cu->language == language_cplus | |
5701 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5702 | |
5703 | add_symbol_to_list (sym, list_to_add); | |
5704 | ||
5705 | /* The semantics of C++ state that "struct foo { ... }" also | |
5706 | defines a typedef for "foo". Synthesize a typedef symbol so | |
5707 | that "ptype foo" works as expected. */ | |
e142c38c | 5708 | if (cu->language == language_cplus) |
63d06c5c DC |
5709 | { |
5710 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 5711 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
5712 | sizeof (struct symbol)); |
5713 | *typedef_sym = *sym; | |
5714 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
5715 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
5716 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
5717 | obsavestring (SYMBOL_NATURAL_NAME (sym), | |
5718 | strlen (SYMBOL_NATURAL_NAME (sym)), | |
b99607ea | 5719 | &objfile->objfile_obstack); |
63d06c5c DC |
5720 | add_symbol_to_list (typedef_sym, list_to_add); |
5721 | } | |
5722 | } | |
c906108c SS |
5723 | break; |
5724 | case DW_TAG_typedef: | |
63d06c5c DC |
5725 | if (processing_has_namespace_info |
5726 | && processing_current_prefix[0] != '\0') | |
5727 | { | |
4a146b47 | 5728 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5729 | processing_current_prefix, |
5730 | "::", | |
5731 | name); | |
5732 | } | |
5733 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5734 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 5735 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 5736 | break; |
c906108c | 5737 | case DW_TAG_base_type: |
a02abb62 | 5738 | case DW_TAG_subrange_type: |
c906108c | 5739 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 5740 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 5741 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5742 | break; |
5743 | case DW_TAG_enumerator: | |
63d06c5c DC |
5744 | if (processing_has_namespace_info |
5745 | && processing_current_prefix[0] != '\0') | |
5746 | { | |
4a146b47 | 5747 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5748 | processing_current_prefix, |
5749 | "::", | |
5750 | name); | |
5751 | } | |
e142c38c | 5752 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5753 | if (attr) |
5754 | { | |
e7c27a73 | 5755 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5756 | } |
63d06c5c DC |
5757 | { |
5758 | /* NOTE: carlton/2003-11-10: See comment above in the | |
5759 | DW_TAG_class_type, etc. block. */ | |
5760 | ||
5761 | struct pending **list_to_add; | |
5762 | ||
e142c38c DJ |
5763 | list_to_add = (cu->list_in_scope == &file_symbols |
5764 | && cu->language == language_cplus | |
5765 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5766 | |
5767 | add_symbol_to_list (sym, list_to_add); | |
5768 | } | |
c906108c | 5769 | break; |
5c4e30ca DC |
5770 | case DW_TAG_namespace: |
5771 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5772 | add_symbol_to_list (sym, &global_symbols); | |
5773 | break; | |
c906108c SS |
5774 | default: |
5775 | /* Not a tag we recognize. Hopefully we aren't processing | |
5776 | trash data, but since we must specifically ignore things | |
5777 | we don't recognize, there is nothing else we should do at | |
5778 | this point. */ | |
4d3c2250 KB |
5779 | complaint (&symfile_complaints, "unsupported tag: '%s'", |
5780 | dwarf_tag_name (die->tag)); | |
c906108c SS |
5781 | break; |
5782 | } | |
5783 | } | |
5784 | return (sym); | |
5785 | } | |
5786 | ||
5787 | /* Copy constant value from an attribute to a symbol. */ | |
5788 | ||
5789 | static void | |
107d2387 | 5790 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 5791 | struct dwarf2_cu *cu) |
c906108c | 5792 | { |
e7c27a73 DJ |
5793 | struct objfile *objfile = cu->objfile; |
5794 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
5795 | struct dwarf_block *blk; |
5796 | ||
5797 | switch (attr->form) | |
5798 | { | |
5799 | case DW_FORM_addr: | |
107d2387 | 5800 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 5801 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
5802 | cu_header->addr_size, |
5803 | TYPE_LENGTH (SYMBOL_TYPE | |
5804 | (sym))); | |
c906108c | 5805 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 5806 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
5807 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
5808 | it's body - store_unsigned_integer. */ | |
5809 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
5810 | DW_ADDR (attr)); | |
c906108c SS |
5811 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
5812 | break; | |
5813 | case DW_FORM_block1: | |
5814 | case DW_FORM_block2: | |
5815 | case DW_FORM_block4: | |
5816 | case DW_FORM_block: | |
5817 | blk = DW_BLOCK (attr); | |
5818 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 5819 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
5820 | blk->size, |
5821 | TYPE_LENGTH (SYMBOL_TYPE | |
5822 | (sym))); | |
c906108c | 5823 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 5824 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
5825 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
5826 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
5827 | break; | |
2df3850c JM |
5828 | |
5829 | /* The DW_AT_const_value attributes are supposed to carry the | |
5830 | symbol's value "represented as it would be on the target | |
5831 | architecture." By the time we get here, it's already been | |
5832 | converted to host endianness, so we just need to sign- or | |
5833 | zero-extend it as appropriate. */ | |
5834 | case DW_FORM_data1: | |
5835 | dwarf2_const_value_data (attr, sym, 8); | |
5836 | break; | |
c906108c | 5837 | case DW_FORM_data2: |
2df3850c JM |
5838 | dwarf2_const_value_data (attr, sym, 16); |
5839 | break; | |
c906108c | 5840 | case DW_FORM_data4: |
2df3850c JM |
5841 | dwarf2_const_value_data (attr, sym, 32); |
5842 | break; | |
c906108c | 5843 | case DW_FORM_data8: |
2df3850c JM |
5844 | dwarf2_const_value_data (attr, sym, 64); |
5845 | break; | |
5846 | ||
c906108c | 5847 | case DW_FORM_sdata: |
2df3850c JM |
5848 | SYMBOL_VALUE (sym) = DW_SND (attr); |
5849 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5850 | break; | |
5851 | ||
c906108c SS |
5852 | case DW_FORM_udata: |
5853 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
5854 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5855 | break; | |
2df3850c | 5856 | |
c906108c | 5857 | default: |
4d3c2250 KB |
5858 | complaint (&symfile_complaints, |
5859 | "unsupported const value attribute form: '%s'", | |
5860 | dwarf_form_name (attr->form)); | |
c906108c SS |
5861 | SYMBOL_VALUE (sym) = 0; |
5862 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5863 | break; | |
5864 | } | |
5865 | } | |
5866 | ||
2df3850c JM |
5867 | |
5868 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
5869 | or zero-extend it as appropriate for the symbol's type. */ | |
5870 | static void | |
5871 | dwarf2_const_value_data (struct attribute *attr, | |
5872 | struct symbol *sym, | |
5873 | int bits) | |
5874 | { | |
5875 | LONGEST l = DW_UNSND (attr); | |
5876 | ||
5877 | if (bits < sizeof (l) * 8) | |
5878 | { | |
5879 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
5880 | l &= ((LONGEST) 1 << bits) - 1; | |
5881 | else | |
bf9198f1 | 5882 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
5883 | } |
5884 | ||
5885 | SYMBOL_VALUE (sym) = l; | |
5886 | SYMBOL_CLASS (sym) = LOC_CONST; | |
5887 | } | |
5888 | ||
5889 | ||
c906108c SS |
5890 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
5891 | ||
5892 | static struct type * | |
e7c27a73 | 5893 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5894 | { |
5895 | struct type *type; | |
5896 | struct attribute *type_attr; | |
5897 | struct die_info *type_die; | |
5898 | unsigned int ref; | |
5899 | ||
e142c38c | 5900 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
5901 | if (!type_attr) |
5902 | { | |
5903 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 5904 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
5905 | } |
5906 | else | |
5907 | { | |
e142c38c | 5908 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
5909 | type_die = follow_die_ref (ref); |
5910 | if (!type_die) | |
5911 | { | |
659b0389 | 5912 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", |
e7c27a73 | 5913 | ref, cu->objfile->name); |
c906108c SS |
5914 | return NULL; |
5915 | } | |
5916 | } | |
e7c27a73 | 5917 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
5918 | if (!type) |
5919 | { | |
5920 | dump_die (type_die); | |
659b0389 | 5921 | error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]", |
e7c27a73 | 5922 | cu->objfile->name); |
c906108c SS |
5923 | } |
5924 | return type; | |
5925 | } | |
5926 | ||
5927 | /* Return the containing type of the die in question using its | |
5928 | DW_AT_containing_type attribute. */ | |
5929 | ||
5930 | static struct type * | |
e7c27a73 | 5931 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5932 | { |
5933 | struct type *type = NULL; | |
5934 | struct attribute *type_attr; | |
5935 | struct die_info *type_die = NULL; | |
5936 | unsigned int ref; | |
5937 | ||
e142c38c | 5938 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
5939 | if (type_attr) |
5940 | { | |
e142c38c | 5941 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
5942 | type_die = follow_die_ref (ref); |
5943 | if (!type_die) | |
5944 | { | |
659b0389 | 5945 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", ref, |
e7c27a73 | 5946 | cu->objfile->name); |
c906108c SS |
5947 | return NULL; |
5948 | } | |
e7c27a73 | 5949 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
5950 | } |
5951 | if (!type) | |
5952 | { | |
5953 | if (type_die) | |
5954 | dump_die (type_die); | |
659b0389 | 5955 | error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]", |
e7c27a73 | 5956 | cu->objfile->name); |
c906108c SS |
5957 | } |
5958 | return type; | |
5959 | } | |
5960 | ||
5961 | #if 0 | |
5962 | static struct type * | |
e7c27a73 | 5963 | type_at_offset (unsigned int offset, struct dwarf2_cu *cu) |
c906108c SS |
5964 | { |
5965 | struct die_info *die; | |
5966 | struct type *type; | |
5967 | ||
5968 | die = follow_die_ref (offset); | |
5969 | if (!die) | |
5970 | { | |
5971 | error ("Dwarf Error: Cannot find type referent at offset %d.", offset); | |
5972 | return NULL; | |
5973 | } | |
e7c27a73 | 5974 | type = tag_type_to_type (die, cu); |
c906108c SS |
5975 | return type; |
5976 | } | |
5977 | #endif | |
5978 | ||
5979 | static struct type * | |
e7c27a73 | 5980 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5981 | { |
5982 | if (die->type) | |
5983 | { | |
5984 | return die->type; | |
5985 | } | |
5986 | else | |
5987 | { | |
e7c27a73 | 5988 | read_type_die (die, cu); |
c906108c SS |
5989 | if (!die->type) |
5990 | { | |
5991 | dump_die (die); | |
659b0389 | 5992 | error ("Dwarf Error: Cannot find type of die [in module %s]", |
e7c27a73 | 5993 | cu->objfile->name); |
c906108c SS |
5994 | } |
5995 | return die->type; | |
5996 | } | |
5997 | } | |
5998 | ||
5999 | static void | |
e7c27a73 | 6000 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6001 | { |
e142c38c | 6002 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
6003 | const char *old_prefix = processing_current_prefix; |
6004 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
6005 | processing_current_prefix = prefix; | |
6006 | ||
c906108c SS |
6007 | switch (die->tag) |
6008 | { | |
6009 | case DW_TAG_class_type: | |
6010 | case DW_TAG_structure_type: | |
6011 | case DW_TAG_union_type: | |
e7c27a73 | 6012 | read_structure_scope (die, cu); |
c906108c SS |
6013 | break; |
6014 | case DW_TAG_enumeration_type: | |
e7c27a73 | 6015 | read_enumeration (die, cu); |
c906108c SS |
6016 | break; |
6017 | case DW_TAG_subprogram: | |
6018 | case DW_TAG_subroutine_type: | |
e7c27a73 | 6019 | read_subroutine_type (die, cu); |
c906108c SS |
6020 | break; |
6021 | case DW_TAG_array_type: | |
e7c27a73 | 6022 | read_array_type (die, cu); |
c906108c SS |
6023 | break; |
6024 | case DW_TAG_pointer_type: | |
e7c27a73 | 6025 | read_tag_pointer_type (die, cu); |
c906108c SS |
6026 | break; |
6027 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 6028 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
6029 | break; |
6030 | case DW_TAG_reference_type: | |
e7c27a73 | 6031 | read_tag_reference_type (die, cu); |
c906108c SS |
6032 | break; |
6033 | case DW_TAG_const_type: | |
e7c27a73 | 6034 | read_tag_const_type (die, cu); |
c906108c SS |
6035 | break; |
6036 | case DW_TAG_volatile_type: | |
e7c27a73 | 6037 | read_tag_volatile_type (die, cu); |
c906108c SS |
6038 | break; |
6039 | case DW_TAG_string_type: | |
e7c27a73 | 6040 | read_tag_string_type (die, cu); |
c906108c SS |
6041 | break; |
6042 | case DW_TAG_typedef: | |
e7c27a73 | 6043 | read_typedef (die, cu); |
c906108c | 6044 | break; |
a02abb62 JB |
6045 | case DW_TAG_subrange_type: |
6046 | read_subrange_type (die, cu); | |
6047 | break; | |
c906108c | 6048 | case DW_TAG_base_type: |
e7c27a73 | 6049 | read_base_type (die, cu); |
c906108c SS |
6050 | break; |
6051 | default: | |
4d3c2250 KB |
6052 | complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'", |
6053 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6054 | break; |
6055 | } | |
63d06c5c DC |
6056 | |
6057 | processing_current_prefix = old_prefix; | |
6058 | do_cleanups (back_to); | |
6059 | } | |
6060 | ||
fdde2d81 DC |
6061 | /* Return the name of the namespace/class that DIE is defined within, |
6062 | or "" if we can't tell. The caller should xfree the result. */ | |
6063 | ||
6064 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
6065 | therein) for an example of how to use this function to deal with | |
6066 | DW_AT_specification. */ | |
6067 | ||
6068 | static char * | |
e142c38c | 6069 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
fdde2d81 | 6070 | { |
e142c38c | 6071 | char *prefix = determine_prefix_aux (die, cu); |
fdde2d81 DC |
6072 | |
6073 | return prefix ? prefix : xstrdup (""); | |
6074 | } | |
6075 | ||
63d06c5c DC |
6076 | /* Return the name of the namespace/class that DIE is defined |
6077 | within, or NULL if we can't tell. The caller should xfree the | |
6078 | result. */ | |
6079 | ||
6080 | static char * | |
e142c38c | 6081 | determine_prefix_aux (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6082 | { |
6083 | struct die_info *parent; | |
6084 | ||
e142c38c | 6085 | if (cu->language != language_cplus) |
63d06c5c DC |
6086 | return NULL; |
6087 | ||
6088 | parent = die->parent; | |
6089 | ||
6090 | if (parent == NULL) | |
6091 | { | |
6092 | return (processing_has_namespace_info ? xstrdup ("") : NULL); | |
6093 | } | |
6094 | else | |
6095 | { | |
e142c38c | 6096 | char *parent_prefix = determine_prefix_aux (parent, cu); |
63d06c5c DC |
6097 | char *retval; |
6098 | ||
6099 | switch (parent->tag) { | |
6100 | case DW_TAG_namespace: | |
6101 | { | |
6102 | int dummy; | |
6103 | ||
6104 | retval = typename_concat (parent_prefix, | |
e142c38c | 6105 | namespace_name (parent, &dummy, cu)); |
63d06c5c DC |
6106 | } |
6107 | break; | |
6108 | case DW_TAG_class_type: | |
6109 | case DW_TAG_structure_type: | |
6110 | { | |
6111 | if (parent_prefix != NULL) | |
6112 | { | |
e142c38c | 6113 | const char *parent_name = dwarf2_name (parent, cu); |
63d06c5c DC |
6114 | |
6115 | if (parent_name != NULL) | |
e142c38c | 6116 | retval = typename_concat (parent_prefix, dwarf2_name (parent, cu)); |
63d06c5c DC |
6117 | else |
6118 | /* FIXME: carlton/2003-11-10: I'm not sure what the | |
6119 | best thing to do here is. */ | |
6120 | retval = typename_concat (parent_prefix, | |
6121 | "<<anonymous class>>"); | |
6122 | } | |
6123 | else | |
e142c38c | 6124 | retval = class_name (parent, cu); |
63d06c5c DC |
6125 | } |
6126 | break; | |
6127 | default: | |
6128 | retval = parent_prefix; | |
6129 | break; | |
6130 | } | |
6131 | ||
6132 | if (retval != parent_prefix) | |
6133 | xfree (parent_prefix); | |
6134 | return retval; | |
6135 | } | |
6136 | } | |
6137 | ||
6138 | /* Return a newly-allocated string formed by concatenating PREFIX, | |
6139 | "::", and SUFFIX, except that if PREFIX is NULL or the empty | |
6140 | string, just return a copy of SUFFIX. */ | |
6141 | ||
6142 | static char * | |
6143 | typename_concat (const char *prefix, const char *suffix) | |
6144 | { | |
6145 | if (prefix == NULL || prefix[0] == '\0') | |
6146 | return xstrdup (suffix); | |
6147 | else | |
6148 | { | |
6149 | char *retval = xmalloc (strlen (prefix) + 2 + strlen (suffix) + 1); | |
6150 | ||
6151 | strcpy (retval, prefix); | |
6152 | strcat (retval, "::"); | |
6153 | strcat (retval, suffix); | |
6154 | ||
6155 | return retval; | |
6156 | } | |
6157 | } | |
6158 | ||
6159 | /* Return a newly-allocated string giving the name of the class given | |
6160 | by DIE. */ | |
6161 | ||
6162 | static char * | |
e142c38c | 6163 | class_name (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6164 | { |
6165 | struct die_info *child; | |
6166 | const char *name; | |
6167 | ||
6168 | for (child = die->child; child != NULL; child = sibling_die (child)) | |
6169 | { | |
6170 | if (child->tag == DW_TAG_subprogram) | |
e142c38c | 6171 | return class_name_from_physname (dwarf2_linkage_name (child, cu)); |
63d06c5c DC |
6172 | } |
6173 | ||
e142c38c | 6174 | name = dwarf2_name (die, cu); |
63d06c5c DC |
6175 | if (name != NULL) |
6176 | return xstrdup (name); | |
6177 | else | |
6178 | return xstrdup (""); | |
c906108c SS |
6179 | } |
6180 | ||
6181 | static struct type * | |
e7c27a73 | 6182 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 6183 | { |
e7c27a73 DJ |
6184 | struct objfile *objfile = cu->objfile; |
6185 | ||
c906108c SS |
6186 | /* FIXME - this should not produce a new (struct type *) |
6187 | every time. It should cache base types. */ | |
6188 | struct type *type; | |
6189 | switch (encoding) | |
6190 | { | |
6191 | case DW_ATE_address: | |
e142c38c | 6192 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
6193 | return type; |
6194 | case DW_ATE_boolean: | |
e142c38c | 6195 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
6196 | return type; |
6197 | case DW_ATE_complex_float: | |
6198 | if (size == 16) | |
6199 | { | |
e142c38c | 6200 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
6201 | } |
6202 | else | |
6203 | { | |
e142c38c | 6204 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
6205 | } |
6206 | return type; | |
6207 | case DW_ATE_float: | |
6208 | if (size == 8) | |
6209 | { | |
e142c38c | 6210 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
6211 | } |
6212 | else | |
6213 | { | |
e142c38c | 6214 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
6215 | } |
6216 | return type; | |
6217 | case DW_ATE_signed: | |
6218 | switch (size) | |
6219 | { | |
6220 | case 1: | |
e142c38c | 6221 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6222 | break; |
6223 | case 2: | |
e142c38c | 6224 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
6225 | break; |
6226 | default: | |
6227 | case 4: | |
e142c38c | 6228 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6229 | break; |
6230 | } | |
6231 | return type; | |
6232 | case DW_ATE_signed_char: | |
e142c38c | 6233 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6234 | return type; |
6235 | case DW_ATE_unsigned: | |
6236 | switch (size) | |
6237 | { | |
6238 | case 1: | |
e142c38c | 6239 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6240 | break; |
6241 | case 2: | |
e142c38c | 6242 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
6243 | break; |
6244 | default: | |
6245 | case 4: | |
e142c38c | 6246 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
6247 | break; |
6248 | } | |
6249 | return type; | |
6250 | case DW_ATE_unsigned_char: | |
e142c38c | 6251 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6252 | return type; |
6253 | default: | |
e142c38c | 6254 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6255 | return type; |
6256 | } | |
6257 | } | |
6258 | ||
6259 | #if 0 | |
6260 | struct die_info * | |
fba45db2 | 6261 | copy_die (struct die_info *old_die) |
c906108c SS |
6262 | { |
6263 | struct die_info *new_die; | |
6264 | int i, num_attrs; | |
6265 | ||
6266 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
6267 | memset (new_die, 0, sizeof (struct die_info)); | |
6268 | ||
6269 | new_die->tag = old_die->tag; | |
6270 | new_die->has_children = old_die->has_children; | |
6271 | new_die->abbrev = old_die->abbrev; | |
6272 | new_die->offset = old_die->offset; | |
6273 | new_die->type = NULL; | |
6274 | ||
6275 | num_attrs = old_die->num_attrs; | |
6276 | new_die->num_attrs = num_attrs; | |
6277 | new_die->attrs = (struct attribute *) | |
6278 | xmalloc (num_attrs * sizeof (struct attribute)); | |
6279 | ||
6280 | for (i = 0; i < old_die->num_attrs; ++i) | |
6281 | { | |
6282 | new_die->attrs[i].name = old_die->attrs[i].name; | |
6283 | new_die->attrs[i].form = old_die->attrs[i].form; | |
6284 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
6285 | } | |
6286 | ||
6287 | new_die->next = NULL; | |
6288 | return new_die; | |
6289 | } | |
6290 | #endif | |
6291 | ||
6292 | /* Return sibling of die, NULL if no sibling. */ | |
6293 | ||
f9aca02d | 6294 | static struct die_info * |
fba45db2 | 6295 | sibling_die (struct die_info *die) |
c906108c | 6296 | { |
639d11d3 | 6297 | return die->sibling; |
c906108c SS |
6298 | } |
6299 | ||
6300 | /* Get linkage name of a die, return NULL if not found. */ | |
6301 | ||
6302 | static char * | |
e142c38c | 6303 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6304 | { |
6305 | struct attribute *attr; | |
6306 | ||
e142c38c | 6307 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
6308 | if (attr && DW_STRING (attr)) |
6309 | return DW_STRING (attr); | |
e142c38c | 6310 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
6311 | if (attr && DW_STRING (attr)) |
6312 | return DW_STRING (attr); | |
6313 | return NULL; | |
6314 | } | |
6315 | ||
9219021c DC |
6316 | /* Get name of a die, return NULL if not found. */ |
6317 | ||
6318 | static char * | |
e142c38c | 6319 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6320 | { |
6321 | struct attribute *attr; | |
6322 | ||
e142c38c | 6323 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
6324 | if (attr && DW_STRING (attr)) |
6325 | return DW_STRING (attr); | |
6326 | return NULL; | |
6327 | } | |
6328 | ||
6329 | /* Return the die that this die in an extension of, or NULL if there | |
6330 | is none. */ | |
6331 | ||
6332 | static struct die_info * | |
e142c38c | 6333 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6334 | { |
6335 | struct attribute *attr; | |
6336 | struct die_info *extension_die; | |
6337 | unsigned int ref; | |
6338 | ||
e142c38c | 6339 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
6340 | if (attr == NULL) |
6341 | return NULL; | |
6342 | ||
e142c38c | 6343 | ref = dwarf2_get_ref_die_offset (attr, cu); |
9219021c DC |
6344 | extension_die = follow_die_ref (ref); |
6345 | if (!extension_die) | |
6346 | { | |
6347 | error ("Dwarf Error: Cannot find referent at offset %d.", ref); | |
6348 | } | |
6349 | ||
6350 | return extension_die; | |
6351 | } | |
6352 | ||
c906108c SS |
6353 | /* Convert a DIE tag into its string name. */ |
6354 | ||
6355 | static char * | |
aa1ee363 | 6356 | dwarf_tag_name (unsigned tag) |
c906108c SS |
6357 | { |
6358 | switch (tag) | |
6359 | { | |
6360 | case DW_TAG_padding: | |
6361 | return "DW_TAG_padding"; | |
6362 | case DW_TAG_array_type: | |
6363 | return "DW_TAG_array_type"; | |
6364 | case DW_TAG_class_type: | |
6365 | return "DW_TAG_class_type"; | |
6366 | case DW_TAG_entry_point: | |
6367 | return "DW_TAG_entry_point"; | |
6368 | case DW_TAG_enumeration_type: | |
6369 | return "DW_TAG_enumeration_type"; | |
6370 | case DW_TAG_formal_parameter: | |
6371 | return "DW_TAG_formal_parameter"; | |
6372 | case DW_TAG_imported_declaration: | |
6373 | return "DW_TAG_imported_declaration"; | |
6374 | case DW_TAG_label: | |
6375 | return "DW_TAG_label"; | |
6376 | case DW_TAG_lexical_block: | |
6377 | return "DW_TAG_lexical_block"; | |
6378 | case DW_TAG_member: | |
6379 | return "DW_TAG_member"; | |
6380 | case DW_TAG_pointer_type: | |
6381 | return "DW_TAG_pointer_type"; | |
6382 | case DW_TAG_reference_type: | |
6383 | return "DW_TAG_reference_type"; | |
6384 | case DW_TAG_compile_unit: | |
6385 | return "DW_TAG_compile_unit"; | |
6386 | case DW_TAG_string_type: | |
6387 | return "DW_TAG_string_type"; | |
6388 | case DW_TAG_structure_type: | |
6389 | return "DW_TAG_structure_type"; | |
6390 | case DW_TAG_subroutine_type: | |
6391 | return "DW_TAG_subroutine_type"; | |
6392 | case DW_TAG_typedef: | |
6393 | return "DW_TAG_typedef"; | |
6394 | case DW_TAG_union_type: | |
6395 | return "DW_TAG_union_type"; | |
6396 | case DW_TAG_unspecified_parameters: | |
6397 | return "DW_TAG_unspecified_parameters"; | |
6398 | case DW_TAG_variant: | |
6399 | return "DW_TAG_variant"; | |
6400 | case DW_TAG_common_block: | |
6401 | return "DW_TAG_common_block"; | |
6402 | case DW_TAG_common_inclusion: | |
6403 | return "DW_TAG_common_inclusion"; | |
6404 | case DW_TAG_inheritance: | |
6405 | return "DW_TAG_inheritance"; | |
6406 | case DW_TAG_inlined_subroutine: | |
6407 | return "DW_TAG_inlined_subroutine"; | |
6408 | case DW_TAG_module: | |
6409 | return "DW_TAG_module"; | |
6410 | case DW_TAG_ptr_to_member_type: | |
6411 | return "DW_TAG_ptr_to_member_type"; | |
6412 | case DW_TAG_set_type: | |
6413 | return "DW_TAG_set_type"; | |
6414 | case DW_TAG_subrange_type: | |
6415 | return "DW_TAG_subrange_type"; | |
6416 | case DW_TAG_with_stmt: | |
6417 | return "DW_TAG_with_stmt"; | |
6418 | case DW_TAG_access_declaration: | |
6419 | return "DW_TAG_access_declaration"; | |
6420 | case DW_TAG_base_type: | |
6421 | return "DW_TAG_base_type"; | |
6422 | case DW_TAG_catch_block: | |
6423 | return "DW_TAG_catch_block"; | |
6424 | case DW_TAG_const_type: | |
6425 | return "DW_TAG_const_type"; | |
6426 | case DW_TAG_constant: | |
6427 | return "DW_TAG_constant"; | |
6428 | case DW_TAG_enumerator: | |
6429 | return "DW_TAG_enumerator"; | |
6430 | case DW_TAG_file_type: | |
6431 | return "DW_TAG_file_type"; | |
6432 | case DW_TAG_friend: | |
6433 | return "DW_TAG_friend"; | |
6434 | case DW_TAG_namelist: | |
6435 | return "DW_TAG_namelist"; | |
6436 | case DW_TAG_namelist_item: | |
6437 | return "DW_TAG_namelist_item"; | |
6438 | case DW_TAG_packed_type: | |
6439 | return "DW_TAG_packed_type"; | |
6440 | case DW_TAG_subprogram: | |
6441 | return "DW_TAG_subprogram"; | |
6442 | case DW_TAG_template_type_param: | |
6443 | return "DW_TAG_template_type_param"; | |
6444 | case DW_TAG_template_value_param: | |
6445 | return "DW_TAG_template_value_param"; | |
6446 | case DW_TAG_thrown_type: | |
6447 | return "DW_TAG_thrown_type"; | |
6448 | case DW_TAG_try_block: | |
6449 | return "DW_TAG_try_block"; | |
6450 | case DW_TAG_variant_part: | |
6451 | return "DW_TAG_variant_part"; | |
6452 | case DW_TAG_variable: | |
6453 | return "DW_TAG_variable"; | |
6454 | case DW_TAG_volatile_type: | |
6455 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
6456 | case DW_TAG_dwarf_procedure: |
6457 | return "DW_TAG_dwarf_procedure"; | |
6458 | case DW_TAG_restrict_type: | |
6459 | return "DW_TAG_restrict_type"; | |
6460 | case DW_TAG_interface_type: | |
6461 | return "DW_TAG_interface_type"; | |
6462 | case DW_TAG_namespace: | |
6463 | return "DW_TAG_namespace"; | |
6464 | case DW_TAG_imported_module: | |
6465 | return "DW_TAG_imported_module"; | |
6466 | case DW_TAG_unspecified_type: | |
6467 | return "DW_TAG_unspecified_type"; | |
6468 | case DW_TAG_partial_unit: | |
6469 | return "DW_TAG_partial_unit"; | |
6470 | case DW_TAG_imported_unit: | |
6471 | return "DW_TAG_imported_unit"; | |
c906108c SS |
6472 | case DW_TAG_MIPS_loop: |
6473 | return "DW_TAG_MIPS_loop"; | |
6474 | case DW_TAG_format_label: | |
6475 | return "DW_TAG_format_label"; | |
6476 | case DW_TAG_function_template: | |
6477 | return "DW_TAG_function_template"; | |
6478 | case DW_TAG_class_template: | |
6479 | return "DW_TAG_class_template"; | |
6480 | default: | |
6481 | return "DW_TAG_<unknown>"; | |
6482 | } | |
6483 | } | |
6484 | ||
6485 | /* Convert a DWARF attribute code into its string name. */ | |
6486 | ||
6487 | static char * | |
aa1ee363 | 6488 | dwarf_attr_name (unsigned attr) |
c906108c SS |
6489 | { |
6490 | switch (attr) | |
6491 | { | |
6492 | case DW_AT_sibling: | |
6493 | return "DW_AT_sibling"; | |
6494 | case DW_AT_location: | |
6495 | return "DW_AT_location"; | |
6496 | case DW_AT_name: | |
6497 | return "DW_AT_name"; | |
6498 | case DW_AT_ordering: | |
6499 | return "DW_AT_ordering"; | |
6500 | case DW_AT_subscr_data: | |
6501 | return "DW_AT_subscr_data"; | |
6502 | case DW_AT_byte_size: | |
6503 | return "DW_AT_byte_size"; | |
6504 | case DW_AT_bit_offset: | |
6505 | return "DW_AT_bit_offset"; | |
6506 | case DW_AT_bit_size: | |
6507 | return "DW_AT_bit_size"; | |
6508 | case DW_AT_element_list: | |
6509 | return "DW_AT_element_list"; | |
6510 | case DW_AT_stmt_list: | |
6511 | return "DW_AT_stmt_list"; | |
6512 | case DW_AT_low_pc: | |
6513 | return "DW_AT_low_pc"; | |
6514 | case DW_AT_high_pc: | |
6515 | return "DW_AT_high_pc"; | |
6516 | case DW_AT_language: | |
6517 | return "DW_AT_language"; | |
6518 | case DW_AT_member: | |
6519 | return "DW_AT_member"; | |
6520 | case DW_AT_discr: | |
6521 | return "DW_AT_discr"; | |
6522 | case DW_AT_discr_value: | |
6523 | return "DW_AT_discr_value"; | |
6524 | case DW_AT_visibility: | |
6525 | return "DW_AT_visibility"; | |
6526 | case DW_AT_import: | |
6527 | return "DW_AT_import"; | |
6528 | case DW_AT_string_length: | |
6529 | return "DW_AT_string_length"; | |
6530 | case DW_AT_common_reference: | |
6531 | return "DW_AT_common_reference"; | |
6532 | case DW_AT_comp_dir: | |
6533 | return "DW_AT_comp_dir"; | |
6534 | case DW_AT_const_value: | |
6535 | return "DW_AT_const_value"; | |
6536 | case DW_AT_containing_type: | |
6537 | return "DW_AT_containing_type"; | |
6538 | case DW_AT_default_value: | |
6539 | return "DW_AT_default_value"; | |
6540 | case DW_AT_inline: | |
6541 | return "DW_AT_inline"; | |
6542 | case DW_AT_is_optional: | |
6543 | return "DW_AT_is_optional"; | |
6544 | case DW_AT_lower_bound: | |
6545 | return "DW_AT_lower_bound"; | |
6546 | case DW_AT_producer: | |
6547 | return "DW_AT_producer"; | |
6548 | case DW_AT_prototyped: | |
6549 | return "DW_AT_prototyped"; | |
6550 | case DW_AT_return_addr: | |
6551 | return "DW_AT_return_addr"; | |
6552 | case DW_AT_start_scope: | |
6553 | return "DW_AT_start_scope"; | |
6554 | case DW_AT_stride_size: | |
6555 | return "DW_AT_stride_size"; | |
6556 | case DW_AT_upper_bound: | |
6557 | return "DW_AT_upper_bound"; | |
6558 | case DW_AT_abstract_origin: | |
6559 | return "DW_AT_abstract_origin"; | |
6560 | case DW_AT_accessibility: | |
6561 | return "DW_AT_accessibility"; | |
6562 | case DW_AT_address_class: | |
6563 | return "DW_AT_address_class"; | |
6564 | case DW_AT_artificial: | |
6565 | return "DW_AT_artificial"; | |
6566 | case DW_AT_base_types: | |
6567 | return "DW_AT_base_types"; | |
6568 | case DW_AT_calling_convention: | |
6569 | return "DW_AT_calling_convention"; | |
6570 | case DW_AT_count: | |
6571 | return "DW_AT_count"; | |
6572 | case DW_AT_data_member_location: | |
6573 | return "DW_AT_data_member_location"; | |
6574 | case DW_AT_decl_column: | |
6575 | return "DW_AT_decl_column"; | |
6576 | case DW_AT_decl_file: | |
6577 | return "DW_AT_decl_file"; | |
6578 | case DW_AT_decl_line: | |
6579 | return "DW_AT_decl_line"; | |
6580 | case DW_AT_declaration: | |
6581 | return "DW_AT_declaration"; | |
6582 | case DW_AT_discr_list: | |
6583 | return "DW_AT_discr_list"; | |
6584 | case DW_AT_encoding: | |
6585 | return "DW_AT_encoding"; | |
6586 | case DW_AT_external: | |
6587 | return "DW_AT_external"; | |
6588 | case DW_AT_frame_base: | |
6589 | return "DW_AT_frame_base"; | |
6590 | case DW_AT_friend: | |
6591 | return "DW_AT_friend"; | |
6592 | case DW_AT_identifier_case: | |
6593 | return "DW_AT_identifier_case"; | |
6594 | case DW_AT_macro_info: | |
6595 | return "DW_AT_macro_info"; | |
6596 | case DW_AT_namelist_items: | |
6597 | return "DW_AT_namelist_items"; | |
6598 | case DW_AT_priority: | |
6599 | return "DW_AT_priority"; | |
6600 | case DW_AT_segment: | |
6601 | return "DW_AT_segment"; | |
6602 | case DW_AT_specification: | |
6603 | return "DW_AT_specification"; | |
6604 | case DW_AT_static_link: | |
6605 | return "DW_AT_static_link"; | |
6606 | case DW_AT_type: | |
6607 | return "DW_AT_type"; | |
6608 | case DW_AT_use_location: | |
6609 | return "DW_AT_use_location"; | |
6610 | case DW_AT_variable_parameter: | |
6611 | return "DW_AT_variable_parameter"; | |
6612 | case DW_AT_virtuality: | |
6613 | return "DW_AT_virtuality"; | |
6614 | case DW_AT_vtable_elem_location: | |
6615 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
6616 | case DW_AT_allocated: |
6617 | return "DW_AT_allocated"; | |
6618 | case DW_AT_associated: | |
6619 | return "DW_AT_associated"; | |
6620 | case DW_AT_data_location: | |
6621 | return "DW_AT_data_location"; | |
6622 | case DW_AT_stride: | |
6623 | return "DW_AT_stride"; | |
6624 | case DW_AT_entry_pc: | |
6625 | return "DW_AT_entry_pc"; | |
6626 | case DW_AT_use_UTF8: | |
6627 | return "DW_AT_use_UTF8"; | |
6628 | case DW_AT_extension: | |
6629 | return "DW_AT_extension"; | |
6630 | case DW_AT_ranges: | |
6631 | return "DW_AT_ranges"; | |
6632 | case DW_AT_trampoline: | |
6633 | return "DW_AT_trampoline"; | |
6634 | case DW_AT_call_column: | |
6635 | return "DW_AT_call_column"; | |
6636 | case DW_AT_call_file: | |
6637 | return "DW_AT_call_file"; | |
6638 | case DW_AT_call_line: | |
6639 | return "DW_AT_call_line"; | |
c906108c SS |
6640 | #ifdef MIPS |
6641 | case DW_AT_MIPS_fde: | |
6642 | return "DW_AT_MIPS_fde"; | |
6643 | case DW_AT_MIPS_loop_begin: | |
6644 | return "DW_AT_MIPS_loop_begin"; | |
6645 | case DW_AT_MIPS_tail_loop_begin: | |
6646 | return "DW_AT_MIPS_tail_loop_begin"; | |
6647 | case DW_AT_MIPS_epilog_begin: | |
6648 | return "DW_AT_MIPS_epilog_begin"; | |
6649 | case DW_AT_MIPS_loop_unroll_factor: | |
6650 | return "DW_AT_MIPS_loop_unroll_factor"; | |
6651 | case DW_AT_MIPS_software_pipeline_depth: | |
6652 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 6653 | #endif |
c906108c SS |
6654 | case DW_AT_MIPS_linkage_name: |
6655 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
6656 | |
6657 | case DW_AT_sf_names: | |
6658 | return "DW_AT_sf_names"; | |
6659 | case DW_AT_src_info: | |
6660 | return "DW_AT_src_info"; | |
6661 | case DW_AT_mac_info: | |
6662 | return "DW_AT_mac_info"; | |
6663 | case DW_AT_src_coords: | |
6664 | return "DW_AT_src_coords"; | |
6665 | case DW_AT_body_begin: | |
6666 | return "DW_AT_body_begin"; | |
6667 | case DW_AT_body_end: | |
6668 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
6669 | case DW_AT_GNU_vector: |
6670 | return "DW_AT_GNU_vector"; | |
c906108c SS |
6671 | default: |
6672 | return "DW_AT_<unknown>"; | |
6673 | } | |
6674 | } | |
6675 | ||
6676 | /* Convert a DWARF value form code into its string name. */ | |
6677 | ||
6678 | static char * | |
aa1ee363 | 6679 | dwarf_form_name (unsigned form) |
c906108c SS |
6680 | { |
6681 | switch (form) | |
6682 | { | |
6683 | case DW_FORM_addr: | |
6684 | return "DW_FORM_addr"; | |
6685 | case DW_FORM_block2: | |
6686 | return "DW_FORM_block2"; | |
6687 | case DW_FORM_block4: | |
6688 | return "DW_FORM_block4"; | |
6689 | case DW_FORM_data2: | |
6690 | return "DW_FORM_data2"; | |
6691 | case DW_FORM_data4: | |
6692 | return "DW_FORM_data4"; | |
6693 | case DW_FORM_data8: | |
6694 | return "DW_FORM_data8"; | |
6695 | case DW_FORM_string: | |
6696 | return "DW_FORM_string"; | |
6697 | case DW_FORM_block: | |
6698 | return "DW_FORM_block"; | |
6699 | case DW_FORM_block1: | |
6700 | return "DW_FORM_block1"; | |
6701 | case DW_FORM_data1: | |
6702 | return "DW_FORM_data1"; | |
6703 | case DW_FORM_flag: | |
6704 | return "DW_FORM_flag"; | |
6705 | case DW_FORM_sdata: | |
6706 | return "DW_FORM_sdata"; | |
6707 | case DW_FORM_strp: | |
6708 | return "DW_FORM_strp"; | |
6709 | case DW_FORM_udata: | |
6710 | return "DW_FORM_udata"; | |
6711 | case DW_FORM_ref_addr: | |
6712 | return "DW_FORM_ref_addr"; | |
6713 | case DW_FORM_ref1: | |
6714 | return "DW_FORM_ref1"; | |
6715 | case DW_FORM_ref2: | |
6716 | return "DW_FORM_ref2"; | |
6717 | case DW_FORM_ref4: | |
6718 | return "DW_FORM_ref4"; | |
6719 | case DW_FORM_ref8: | |
6720 | return "DW_FORM_ref8"; | |
6721 | case DW_FORM_ref_udata: | |
6722 | return "DW_FORM_ref_udata"; | |
6723 | case DW_FORM_indirect: | |
6724 | return "DW_FORM_indirect"; | |
6725 | default: | |
6726 | return "DW_FORM_<unknown>"; | |
6727 | } | |
6728 | } | |
6729 | ||
6730 | /* Convert a DWARF stack opcode into its string name. */ | |
6731 | ||
6732 | static char * | |
aa1ee363 | 6733 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
6734 | { |
6735 | switch (op) | |
6736 | { | |
6737 | case DW_OP_addr: | |
6738 | return "DW_OP_addr"; | |
6739 | case DW_OP_deref: | |
6740 | return "DW_OP_deref"; | |
6741 | case DW_OP_const1u: | |
6742 | return "DW_OP_const1u"; | |
6743 | case DW_OP_const1s: | |
6744 | return "DW_OP_const1s"; | |
6745 | case DW_OP_const2u: | |
6746 | return "DW_OP_const2u"; | |
6747 | case DW_OP_const2s: | |
6748 | return "DW_OP_const2s"; | |
6749 | case DW_OP_const4u: | |
6750 | return "DW_OP_const4u"; | |
6751 | case DW_OP_const4s: | |
6752 | return "DW_OP_const4s"; | |
6753 | case DW_OP_const8u: | |
6754 | return "DW_OP_const8u"; | |
6755 | case DW_OP_const8s: | |
6756 | return "DW_OP_const8s"; | |
6757 | case DW_OP_constu: | |
6758 | return "DW_OP_constu"; | |
6759 | case DW_OP_consts: | |
6760 | return "DW_OP_consts"; | |
6761 | case DW_OP_dup: | |
6762 | return "DW_OP_dup"; | |
6763 | case DW_OP_drop: | |
6764 | return "DW_OP_drop"; | |
6765 | case DW_OP_over: | |
6766 | return "DW_OP_over"; | |
6767 | case DW_OP_pick: | |
6768 | return "DW_OP_pick"; | |
6769 | case DW_OP_swap: | |
6770 | return "DW_OP_swap"; | |
6771 | case DW_OP_rot: | |
6772 | return "DW_OP_rot"; | |
6773 | case DW_OP_xderef: | |
6774 | return "DW_OP_xderef"; | |
6775 | case DW_OP_abs: | |
6776 | return "DW_OP_abs"; | |
6777 | case DW_OP_and: | |
6778 | return "DW_OP_and"; | |
6779 | case DW_OP_div: | |
6780 | return "DW_OP_div"; | |
6781 | case DW_OP_minus: | |
6782 | return "DW_OP_minus"; | |
6783 | case DW_OP_mod: | |
6784 | return "DW_OP_mod"; | |
6785 | case DW_OP_mul: | |
6786 | return "DW_OP_mul"; | |
6787 | case DW_OP_neg: | |
6788 | return "DW_OP_neg"; | |
6789 | case DW_OP_not: | |
6790 | return "DW_OP_not"; | |
6791 | case DW_OP_or: | |
6792 | return "DW_OP_or"; | |
6793 | case DW_OP_plus: | |
6794 | return "DW_OP_plus"; | |
6795 | case DW_OP_plus_uconst: | |
6796 | return "DW_OP_plus_uconst"; | |
6797 | case DW_OP_shl: | |
6798 | return "DW_OP_shl"; | |
6799 | case DW_OP_shr: | |
6800 | return "DW_OP_shr"; | |
6801 | case DW_OP_shra: | |
6802 | return "DW_OP_shra"; | |
6803 | case DW_OP_xor: | |
6804 | return "DW_OP_xor"; | |
6805 | case DW_OP_bra: | |
6806 | return "DW_OP_bra"; | |
6807 | case DW_OP_eq: | |
6808 | return "DW_OP_eq"; | |
6809 | case DW_OP_ge: | |
6810 | return "DW_OP_ge"; | |
6811 | case DW_OP_gt: | |
6812 | return "DW_OP_gt"; | |
6813 | case DW_OP_le: | |
6814 | return "DW_OP_le"; | |
6815 | case DW_OP_lt: | |
6816 | return "DW_OP_lt"; | |
6817 | case DW_OP_ne: | |
6818 | return "DW_OP_ne"; | |
6819 | case DW_OP_skip: | |
6820 | return "DW_OP_skip"; | |
6821 | case DW_OP_lit0: | |
6822 | return "DW_OP_lit0"; | |
6823 | case DW_OP_lit1: | |
6824 | return "DW_OP_lit1"; | |
6825 | case DW_OP_lit2: | |
6826 | return "DW_OP_lit2"; | |
6827 | case DW_OP_lit3: | |
6828 | return "DW_OP_lit3"; | |
6829 | case DW_OP_lit4: | |
6830 | return "DW_OP_lit4"; | |
6831 | case DW_OP_lit5: | |
6832 | return "DW_OP_lit5"; | |
6833 | case DW_OP_lit6: | |
6834 | return "DW_OP_lit6"; | |
6835 | case DW_OP_lit7: | |
6836 | return "DW_OP_lit7"; | |
6837 | case DW_OP_lit8: | |
6838 | return "DW_OP_lit8"; | |
6839 | case DW_OP_lit9: | |
6840 | return "DW_OP_lit9"; | |
6841 | case DW_OP_lit10: | |
6842 | return "DW_OP_lit10"; | |
6843 | case DW_OP_lit11: | |
6844 | return "DW_OP_lit11"; | |
6845 | case DW_OP_lit12: | |
6846 | return "DW_OP_lit12"; | |
6847 | case DW_OP_lit13: | |
6848 | return "DW_OP_lit13"; | |
6849 | case DW_OP_lit14: | |
6850 | return "DW_OP_lit14"; | |
6851 | case DW_OP_lit15: | |
6852 | return "DW_OP_lit15"; | |
6853 | case DW_OP_lit16: | |
6854 | return "DW_OP_lit16"; | |
6855 | case DW_OP_lit17: | |
6856 | return "DW_OP_lit17"; | |
6857 | case DW_OP_lit18: | |
6858 | return "DW_OP_lit18"; | |
6859 | case DW_OP_lit19: | |
6860 | return "DW_OP_lit19"; | |
6861 | case DW_OP_lit20: | |
6862 | return "DW_OP_lit20"; | |
6863 | case DW_OP_lit21: | |
6864 | return "DW_OP_lit21"; | |
6865 | case DW_OP_lit22: | |
6866 | return "DW_OP_lit22"; | |
6867 | case DW_OP_lit23: | |
6868 | return "DW_OP_lit23"; | |
6869 | case DW_OP_lit24: | |
6870 | return "DW_OP_lit24"; | |
6871 | case DW_OP_lit25: | |
6872 | return "DW_OP_lit25"; | |
6873 | case DW_OP_lit26: | |
6874 | return "DW_OP_lit26"; | |
6875 | case DW_OP_lit27: | |
6876 | return "DW_OP_lit27"; | |
6877 | case DW_OP_lit28: | |
6878 | return "DW_OP_lit28"; | |
6879 | case DW_OP_lit29: | |
6880 | return "DW_OP_lit29"; | |
6881 | case DW_OP_lit30: | |
6882 | return "DW_OP_lit30"; | |
6883 | case DW_OP_lit31: | |
6884 | return "DW_OP_lit31"; | |
6885 | case DW_OP_reg0: | |
6886 | return "DW_OP_reg0"; | |
6887 | case DW_OP_reg1: | |
6888 | return "DW_OP_reg1"; | |
6889 | case DW_OP_reg2: | |
6890 | return "DW_OP_reg2"; | |
6891 | case DW_OP_reg3: | |
6892 | return "DW_OP_reg3"; | |
6893 | case DW_OP_reg4: | |
6894 | return "DW_OP_reg4"; | |
6895 | case DW_OP_reg5: | |
6896 | return "DW_OP_reg5"; | |
6897 | case DW_OP_reg6: | |
6898 | return "DW_OP_reg6"; | |
6899 | case DW_OP_reg7: | |
6900 | return "DW_OP_reg7"; | |
6901 | case DW_OP_reg8: | |
6902 | return "DW_OP_reg8"; | |
6903 | case DW_OP_reg9: | |
6904 | return "DW_OP_reg9"; | |
6905 | case DW_OP_reg10: | |
6906 | return "DW_OP_reg10"; | |
6907 | case DW_OP_reg11: | |
6908 | return "DW_OP_reg11"; | |
6909 | case DW_OP_reg12: | |
6910 | return "DW_OP_reg12"; | |
6911 | case DW_OP_reg13: | |
6912 | return "DW_OP_reg13"; | |
6913 | case DW_OP_reg14: | |
6914 | return "DW_OP_reg14"; | |
6915 | case DW_OP_reg15: | |
6916 | return "DW_OP_reg15"; | |
6917 | case DW_OP_reg16: | |
6918 | return "DW_OP_reg16"; | |
6919 | case DW_OP_reg17: | |
6920 | return "DW_OP_reg17"; | |
6921 | case DW_OP_reg18: | |
6922 | return "DW_OP_reg18"; | |
6923 | case DW_OP_reg19: | |
6924 | return "DW_OP_reg19"; | |
6925 | case DW_OP_reg20: | |
6926 | return "DW_OP_reg20"; | |
6927 | case DW_OP_reg21: | |
6928 | return "DW_OP_reg21"; | |
6929 | case DW_OP_reg22: | |
6930 | return "DW_OP_reg22"; | |
6931 | case DW_OP_reg23: | |
6932 | return "DW_OP_reg23"; | |
6933 | case DW_OP_reg24: | |
6934 | return "DW_OP_reg24"; | |
6935 | case DW_OP_reg25: | |
6936 | return "DW_OP_reg25"; | |
6937 | case DW_OP_reg26: | |
6938 | return "DW_OP_reg26"; | |
6939 | case DW_OP_reg27: | |
6940 | return "DW_OP_reg27"; | |
6941 | case DW_OP_reg28: | |
6942 | return "DW_OP_reg28"; | |
6943 | case DW_OP_reg29: | |
6944 | return "DW_OP_reg29"; | |
6945 | case DW_OP_reg30: | |
6946 | return "DW_OP_reg30"; | |
6947 | case DW_OP_reg31: | |
6948 | return "DW_OP_reg31"; | |
6949 | case DW_OP_breg0: | |
6950 | return "DW_OP_breg0"; | |
6951 | case DW_OP_breg1: | |
6952 | return "DW_OP_breg1"; | |
6953 | case DW_OP_breg2: | |
6954 | return "DW_OP_breg2"; | |
6955 | case DW_OP_breg3: | |
6956 | return "DW_OP_breg3"; | |
6957 | case DW_OP_breg4: | |
6958 | return "DW_OP_breg4"; | |
6959 | case DW_OP_breg5: | |
6960 | return "DW_OP_breg5"; | |
6961 | case DW_OP_breg6: | |
6962 | return "DW_OP_breg6"; | |
6963 | case DW_OP_breg7: | |
6964 | return "DW_OP_breg7"; | |
6965 | case DW_OP_breg8: | |
6966 | return "DW_OP_breg8"; | |
6967 | case DW_OP_breg9: | |
6968 | return "DW_OP_breg9"; | |
6969 | case DW_OP_breg10: | |
6970 | return "DW_OP_breg10"; | |
6971 | case DW_OP_breg11: | |
6972 | return "DW_OP_breg11"; | |
6973 | case DW_OP_breg12: | |
6974 | return "DW_OP_breg12"; | |
6975 | case DW_OP_breg13: | |
6976 | return "DW_OP_breg13"; | |
6977 | case DW_OP_breg14: | |
6978 | return "DW_OP_breg14"; | |
6979 | case DW_OP_breg15: | |
6980 | return "DW_OP_breg15"; | |
6981 | case DW_OP_breg16: | |
6982 | return "DW_OP_breg16"; | |
6983 | case DW_OP_breg17: | |
6984 | return "DW_OP_breg17"; | |
6985 | case DW_OP_breg18: | |
6986 | return "DW_OP_breg18"; | |
6987 | case DW_OP_breg19: | |
6988 | return "DW_OP_breg19"; | |
6989 | case DW_OP_breg20: | |
6990 | return "DW_OP_breg20"; | |
6991 | case DW_OP_breg21: | |
6992 | return "DW_OP_breg21"; | |
6993 | case DW_OP_breg22: | |
6994 | return "DW_OP_breg22"; | |
6995 | case DW_OP_breg23: | |
6996 | return "DW_OP_breg23"; | |
6997 | case DW_OP_breg24: | |
6998 | return "DW_OP_breg24"; | |
6999 | case DW_OP_breg25: | |
7000 | return "DW_OP_breg25"; | |
7001 | case DW_OP_breg26: | |
7002 | return "DW_OP_breg26"; | |
7003 | case DW_OP_breg27: | |
7004 | return "DW_OP_breg27"; | |
7005 | case DW_OP_breg28: | |
7006 | return "DW_OP_breg28"; | |
7007 | case DW_OP_breg29: | |
7008 | return "DW_OP_breg29"; | |
7009 | case DW_OP_breg30: | |
7010 | return "DW_OP_breg30"; | |
7011 | case DW_OP_breg31: | |
7012 | return "DW_OP_breg31"; | |
7013 | case DW_OP_regx: | |
7014 | return "DW_OP_regx"; | |
7015 | case DW_OP_fbreg: | |
7016 | return "DW_OP_fbreg"; | |
7017 | case DW_OP_bregx: | |
7018 | return "DW_OP_bregx"; | |
7019 | case DW_OP_piece: | |
7020 | return "DW_OP_piece"; | |
7021 | case DW_OP_deref_size: | |
7022 | return "DW_OP_deref_size"; | |
7023 | case DW_OP_xderef_size: | |
7024 | return "DW_OP_xderef_size"; | |
7025 | case DW_OP_nop: | |
7026 | return "DW_OP_nop"; | |
ed348acc EZ |
7027 | /* DWARF 3 extensions. */ |
7028 | case DW_OP_push_object_address: | |
7029 | return "DW_OP_push_object_address"; | |
7030 | case DW_OP_call2: | |
7031 | return "DW_OP_call2"; | |
7032 | case DW_OP_call4: | |
7033 | return "DW_OP_call4"; | |
7034 | case DW_OP_call_ref: | |
7035 | return "DW_OP_call_ref"; | |
7036 | /* GNU extensions. */ | |
7037 | case DW_OP_GNU_push_tls_address: | |
7038 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
7039 | default: |
7040 | return "OP_<unknown>"; | |
7041 | } | |
7042 | } | |
7043 | ||
7044 | static char * | |
fba45db2 | 7045 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
7046 | { |
7047 | if (mybool) | |
7048 | return "TRUE"; | |
7049 | else | |
7050 | return "FALSE"; | |
7051 | } | |
7052 | ||
7053 | /* Convert a DWARF type code into its string name. */ | |
7054 | ||
7055 | static char * | |
aa1ee363 | 7056 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
7057 | { |
7058 | switch (enc) | |
7059 | { | |
7060 | case DW_ATE_address: | |
7061 | return "DW_ATE_address"; | |
7062 | case DW_ATE_boolean: | |
7063 | return "DW_ATE_boolean"; | |
7064 | case DW_ATE_complex_float: | |
7065 | return "DW_ATE_complex_float"; | |
7066 | case DW_ATE_float: | |
7067 | return "DW_ATE_float"; | |
7068 | case DW_ATE_signed: | |
7069 | return "DW_ATE_signed"; | |
7070 | case DW_ATE_signed_char: | |
7071 | return "DW_ATE_signed_char"; | |
7072 | case DW_ATE_unsigned: | |
7073 | return "DW_ATE_unsigned"; | |
7074 | case DW_ATE_unsigned_char: | |
7075 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
7076 | case DW_ATE_imaginary_float: |
7077 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
7078 | default: |
7079 | return "DW_ATE_<unknown>"; | |
7080 | } | |
7081 | } | |
7082 | ||
7083 | /* Convert a DWARF call frame info operation to its string name. */ | |
7084 | ||
7085 | #if 0 | |
7086 | static char * | |
aa1ee363 | 7087 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
7088 | { |
7089 | switch (cfi_opc) | |
7090 | { | |
7091 | case DW_CFA_advance_loc: | |
7092 | return "DW_CFA_advance_loc"; | |
7093 | case DW_CFA_offset: | |
7094 | return "DW_CFA_offset"; | |
7095 | case DW_CFA_restore: | |
7096 | return "DW_CFA_restore"; | |
7097 | case DW_CFA_nop: | |
7098 | return "DW_CFA_nop"; | |
7099 | case DW_CFA_set_loc: | |
7100 | return "DW_CFA_set_loc"; | |
7101 | case DW_CFA_advance_loc1: | |
7102 | return "DW_CFA_advance_loc1"; | |
7103 | case DW_CFA_advance_loc2: | |
7104 | return "DW_CFA_advance_loc2"; | |
7105 | case DW_CFA_advance_loc4: | |
7106 | return "DW_CFA_advance_loc4"; | |
7107 | case DW_CFA_offset_extended: | |
7108 | return "DW_CFA_offset_extended"; | |
7109 | case DW_CFA_restore_extended: | |
7110 | return "DW_CFA_restore_extended"; | |
7111 | case DW_CFA_undefined: | |
7112 | return "DW_CFA_undefined"; | |
7113 | case DW_CFA_same_value: | |
7114 | return "DW_CFA_same_value"; | |
7115 | case DW_CFA_register: | |
7116 | return "DW_CFA_register"; | |
7117 | case DW_CFA_remember_state: | |
7118 | return "DW_CFA_remember_state"; | |
7119 | case DW_CFA_restore_state: | |
7120 | return "DW_CFA_restore_state"; | |
7121 | case DW_CFA_def_cfa: | |
7122 | return "DW_CFA_def_cfa"; | |
7123 | case DW_CFA_def_cfa_register: | |
7124 | return "DW_CFA_def_cfa_register"; | |
7125 | case DW_CFA_def_cfa_offset: | |
7126 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
7127 | |
7128 | /* DWARF 3 */ | |
7129 | case DW_CFA_def_cfa_expression: | |
7130 | return "DW_CFA_def_cfa_expression"; | |
7131 | case DW_CFA_expression: | |
7132 | return "DW_CFA_expression"; | |
7133 | case DW_CFA_offset_extended_sf: | |
7134 | return "DW_CFA_offset_extended_sf"; | |
7135 | case DW_CFA_def_cfa_sf: | |
7136 | return "DW_CFA_def_cfa_sf"; | |
7137 | case DW_CFA_def_cfa_offset_sf: | |
7138 | return "DW_CFA_def_cfa_offset_sf"; | |
7139 | ||
c906108c SS |
7140 | /* SGI/MIPS specific */ |
7141 | case DW_CFA_MIPS_advance_loc8: | |
7142 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
7143 | |
7144 | /* GNU extensions */ | |
7145 | case DW_CFA_GNU_window_save: | |
7146 | return "DW_CFA_GNU_window_save"; | |
7147 | case DW_CFA_GNU_args_size: | |
7148 | return "DW_CFA_GNU_args_size"; | |
7149 | case DW_CFA_GNU_negative_offset_extended: | |
7150 | return "DW_CFA_GNU_negative_offset_extended"; | |
7151 | ||
c906108c SS |
7152 | default: |
7153 | return "DW_CFA_<unknown>"; | |
7154 | } | |
7155 | } | |
7156 | #endif | |
7157 | ||
f9aca02d | 7158 | static void |
fba45db2 | 7159 | dump_die (struct die_info *die) |
c906108c SS |
7160 | { |
7161 | unsigned int i; | |
7162 | ||
48cd0caa | 7163 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 7164 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 7165 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 7166 | dwarf_bool_name (die->child != NULL)); |
c906108c | 7167 | |
48cd0caa | 7168 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
7169 | for (i = 0; i < die->num_attrs; ++i) |
7170 | { | |
48cd0caa | 7171 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
7172 | dwarf_attr_name (die->attrs[i].name), |
7173 | dwarf_form_name (die->attrs[i].form)); | |
7174 | switch (die->attrs[i].form) | |
7175 | { | |
7176 | case DW_FORM_ref_addr: | |
7177 | case DW_FORM_addr: | |
48cd0caa | 7178 | fprintf_unfiltered (gdb_stderr, "address: "); |
c906108c SS |
7179 | print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
7180 | break; | |
7181 | case DW_FORM_block2: | |
7182 | case DW_FORM_block4: | |
7183 | case DW_FORM_block: | |
7184 | case DW_FORM_block1: | |
48cd0caa | 7185 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c SS |
7186 | break; |
7187 | case DW_FORM_data1: | |
7188 | case DW_FORM_data2: | |
7189 | case DW_FORM_data4: | |
ce5d95e1 | 7190 | case DW_FORM_data8: |
c906108c SS |
7191 | case DW_FORM_ref1: |
7192 | case DW_FORM_ref2: | |
7193 | case DW_FORM_ref4: | |
7194 | case DW_FORM_udata: | |
7195 | case DW_FORM_sdata: | |
48cd0caa | 7196 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
7197 | break; |
7198 | case DW_FORM_string: | |
4bdf3d34 | 7199 | case DW_FORM_strp: |
48cd0caa | 7200 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 7201 | DW_STRING (&die->attrs[i]) |
c5aa993b | 7202 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
7203 | break; |
7204 | case DW_FORM_flag: | |
7205 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 7206 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 7207 | else |
48cd0caa | 7208 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 7209 | break; |
a8329558 KW |
7210 | case DW_FORM_indirect: |
7211 | /* the reader will have reduced the indirect form to | |
7212 | the "base form" so this form should not occur */ | |
48cd0caa | 7213 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 7214 | break; |
c906108c | 7215 | default: |
48cd0caa | 7216 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 7217 | die->attrs[i].form); |
c906108c | 7218 | } |
48cd0caa | 7219 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
7220 | } |
7221 | } | |
7222 | ||
f9aca02d | 7223 | static void |
fba45db2 | 7224 | dump_die_list (struct die_info *die) |
c906108c SS |
7225 | { |
7226 | while (die) | |
7227 | { | |
7228 | dump_die (die); | |
639d11d3 DC |
7229 | if (die->child != NULL) |
7230 | dump_die_list (die->child); | |
7231 | if (die->sibling != NULL) | |
7232 | dump_die_list (die->sibling); | |
c906108c SS |
7233 | } |
7234 | } | |
7235 | ||
f9aca02d | 7236 | static void |
fba45db2 | 7237 | store_in_ref_table (unsigned int offset, struct die_info *die) |
c906108c SS |
7238 | { |
7239 | int h; | |
7240 | struct die_info *old; | |
7241 | ||
7242 | h = (offset % REF_HASH_SIZE); | |
7243 | old = die_ref_table[h]; | |
7244 | die->next_ref = old; | |
7245 | die_ref_table[h] = die; | |
7246 | } | |
7247 | ||
7248 | ||
7249 | static void | |
fba45db2 | 7250 | dwarf2_empty_hash_tables (void) |
c906108c SS |
7251 | { |
7252 | memset (die_ref_table, 0, sizeof (die_ref_table)); | |
7253 | } | |
7254 | ||
7255 | static unsigned int | |
e142c38c | 7256 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
7257 | { |
7258 | unsigned int result = 0; | |
7259 | ||
7260 | switch (attr->form) | |
7261 | { | |
7262 | case DW_FORM_ref_addr: | |
7263 | result = DW_ADDR (attr); | |
7264 | break; | |
7265 | case DW_FORM_ref1: | |
7266 | case DW_FORM_ref2: | |
7267 | case DW_FORM_ref4: | |
613e1657 | 7268 | case DW_FORM_ref8: |
c906108c | 7269 | case DW_FORM_ref_udata: |
e142c38c | 7270 | result = cu->header.offset + DW_UNSND (attr); |
c906108c SS |
7271 | break; |
7272 | default: | |
4d3c2250 KB |
7273 | complaint (&symfile_complaints, |
7274 | "unsupported die ref attribute form: '%s'", | |
7275 | dwarf_form_name (attr->form)); | |
c906108c SS |
7276 | } |
7277 | return result; | |
7278 | } | |
7279 | ||
a02abb62 JB |
7280 | /* Return the constant value held by the given attribute. Return -1 |
7281 | if the value held by the attribute is not constant. */ | |
7282 | ||
7283 | static int | |
7284 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
7285 | { | |
7286 | if (attr->form == DW_FORM_sdata) | |
7287 | return DW_SND (attr); | |
7288 | else if (attr->form == DW_FORM_udata | |
7289 | || attr->form == DW_FORM_data1 | |
7290 | || attr->form == DW_FORM_data2 | |
7291 | || attr->form == DW_FORM_data4 | |
7292 | || attr->form == DW_FORM_data8) | |
7293 | return DW_UNSND (attr); | |
7294 | else | |
7295 | { | |
7296 | complaint (&symfile_complaints, "Attribute value is not a constant (%s)", | |
7297 | dwarf_form_name (attr->form)); | |
7298 | return default_value; | |
7299 | } | |
7300 | } | |
7301 | ||
f9aca02d | 7302 | static struct die_info * |
fba45db2 | 7303 | follow_die_ref (unsigned int offset) |
c906108c SS |
7304 | { |
7305 | struct die_info *die; | |
7306 | int h; | |
7307 | ||
7308 | h = (offset % REF_HASH_SIZE); | |
7309 | die = die_ref_table[h]; | |
7310 | while (die) | |
7311 | { | |
7312 | if (die->offset == offset) | |
7313 | { | |
7314 | return die; | |
7315 | } | |
7316 | die = die->next_ref; | |
7317 | } | |
7318 | return NULL; | |
7319 | } | |
7320 | ||
7321 | static struct type * | |
e142c38c DJ |
7322 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
7323 | struct dwarf2_cu *cu) | |
c906108c SS |
7324 | { |
7325 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
7326 | { | |
659b0389 ML |
7327 | error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]", |
7328 | typeid, objfile->name); | |
c906108c SS |
7329 | } |
7330 | ||
7331 | /* Look for this particular type in the fundamental type vector. If | |
7332 | one is not found, create and install one appropriate for the | |
7333 | current language and the current target machine. */ | |
7334 | ||
e142c38c | 7335 | if (cu->ftypes[typeid] == NULL) |
c906108c | 7336 | { |
e142c38c | 7337 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
7338 | } |
7339 | ||
e142c38c | 7340 | return (cu->ftypes[typeid]); |
c906108c SS |
7341 | } |
7342 | ||
7343 | /* Decode simple location descriptions. | |
7344 | Given a pointer to a dwarf block that defines a location, compute | |
7345 | the location and return the value. | |
7346 | ||
4cecd739 DJ |
7347 | NOTE drow/2003-11-18: This function is called in two situations |
7348 | now: for the address of static or global variables (partial symbols | |
7349 | only) and for offsets into structures which are expected to be | |
7350 | (more or less) constant. The partial symbol case should go away, | |
7351 | and only the constant case should remain. That will let this | |
7352 | function complain more accurately. A few special modes are allowed | |
7353 | without complaint for global variables (for instance, global | |
7354 | register values and thread-local values). | |
c906108c SS |
7355 | |
7356 | A location description containing no operations indicates that the | |
4cecd739 | 7357 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
7358 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
7359 | callers will only want a very basic result and this can become a | |
7360 | complaint. | |
c906108c SS |
7361 | |
7362 | When the result is a register number, the global isreg flag is set, | |
7363 | otherwise it is cleared. | |
7364 | ||
c906108c SS |
7365 | Note that stack[0] is unused except as a default error return. |
7366 | Note that stack overflow is not yet handled. */ | |
7367 | ||
7368 | static CORE_ADDR | |
e7c27a73 | 7369 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 7370 | { |
e7c27a73 DJ |
7371 | struct objfile *objfile = cu->objfile; |
7372 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7373 | int i; |
7374 | int size = blk->size; | |
7375 | char *data = blk->data; | |
7376 | CORE_ADDR stack[64]; | |
7377 | int stacki; | |
7378 | unsigned int bytes_read, unsnd; | |
7379 | unsigned char op; | |
7380 | ||
7381 | i = 0; | |
7382 | stacki = 0; | |
7383 | stack[stacki] = 0; | |
7384 | isreg = 0; | |
c906108c SS |
7385 | |
7386 | while (i < size) | |
7387 | { | |
c906108c SS |
7388 | op = data[i++]; |
7389 | switch (op) | |
7390 | { | |
f1bea926 JM |
7391 | case DW_OP_lit0: |
7392 | case DW_OP_lit1: | |
7393 | case DW_OP_lit2: | |
7394 | case DW_OP_lit3: | |
7395 | case DW_OP_lit4: | |
7396 | case DW_OP_lit5: | |
7397 | case DW_OP_lit6: | |
7398 | case DW_OP_lit7: | |
7399 | case DW_OP_lit8: | |
7400 | case DW_OP_lit9: | |
7401 | case DW_OP_lit10: | |
7402 | case DW_OP_lit11: | |
7403 | case DW_OP_lit12: | |
7404 | case DW_OP_lit13: | |
7405 | case DW_OP_lit14: | |
7406 | case DW_OP_lit15: | |
7407 | case DW_OP_lit16: | |
7408 | case DW_OP_lit17: | |
7409 | case DW_OP_lit18: | |
7410 | case DW_OP_lit19: | |
7411 | case DW_OP_lit20: | |
7412 | case DW_OP_lit21: | |
7413 | case DW_OP_lit22: | |
7414 | case DW_OP_lit23: | |
7415 | case DW_OP_lit24: | |
7416 | case DW_OP_lit25: | |
7417 | case DW_OP_lit26: | |
7418 | case DW_OP_lit27: | |
7419 | case DW_OP_lit28: | |
7420 | case DW_OP_lit29: | |
7421 | case DW_OP_lit30: | |
7422 | case DW_OP_lit31: | |
7423 | stack[++stacki] = op - DW_OP_lit0; | |
7424 | break; | |
7425 | ||
c906108c SS |
7426 | case DW_OP_reg0: |
7427 | case DW_OP_reg1: | |
7428 | case DW_OP_reg2: | |
7429 | case DW_OP_reg3: | |
7430 | case DW_OP_reg4: | |
7431 | case DW_OP_reg5: | |
7432 | case DW_OP_reg6: | |
7433 | case DW_OP_reg7: | |
7434 | case DW_OP_reg8: | |
7435 | case DW_OP_reg9: | |
7436 | case DW_OP_reg10: | |
7437 | case DW_OP_reg11: | |
7438 | case DW_OP_reg12: | |
7439 | case DW_OP_reg13: | |
7440 | case DW_OP_reg14: | |
7441 | case DW_OP_reg15: | |
7442 | case DW_OP_reg16: | |
7443 | case DW_OP_reg17: | |
7444 | case DW_OP_reg18: | |
7445 | case DW_OP_reg19: | |
7446 | case DW_OP_reg20: | |
7447 | case DW_OP_reg21: | |
7448 | case DW_OP_reg22: | |
7449 | case DW_OP_reg23: | |
7450 | case DW_OP_reg24: | |
7451 | case DW_OP_reg25: | |
7452 | case DW_OP_reg26: | |
7453 | case DW_OP_reg27: | |
7454 | case DW_OP_reg28: | |
7455 | case DW_OP_reg29: | |
7456 | case DW_OP_reg30: | |
7457 | case DW_OP_reg31: | |
7458 | isreg = 1; | |
7459 | stack[++stacki] = op - DW_OP_reg0; | |
4cecd739 DJ |
7460 | if (i < size) |
7461 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7462 | break; |
7463 | ||
7464 | case DW_OP_regx: | |
7465 | isreg = 1; | |
7466 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7467 | i += bytes_read; | |
c906108c | 7468 | stack[++stacki] = unsnd; |
4cecd739 DJ |
7469 | if (i < size) |
7470 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7471 | break; |
7472 | ||
7473 | case DW_OP_addr: | |
107d2387 | 7474 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 7475 | cu, &bytes_read); |
107d2387 | 7476 | i += bytes_read; |
c906108c SS |
7477 | break; |
7478 | ||
7479 | case DW_OP_const1u: | |
7480 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
7481 | i += 1; | |
7482 | break; | |
7483 | ||
7484 | case DW_OP_const1s: | |
7485 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
7486 | i += 1; | |
7487 | break; | |
7488 | ||
7489 | case DW_OP_const2u: | |
7490 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
7491 | i += 2; | |
7492 | break; | |
7493 | ||
7494 | case DW_OP_const2s: | |
7495 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
7496 | i += 2; | |
7497 | break; | |
7498 | ||
7499 | case DW_OP_const4u: | |
7500 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
7501 | i += 4; | |
7502 | break; | |
7503 | ||
7504 | case DW_OP_const4s: | |
7505 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
7506 | i += 4; | |
7507 | break; | |
7508 | ||
7509 | case DW_OP_constu: | |
7510 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 7511 | &bytes_read); |
c906108c SS |
7512 | i += bytes_read; |
7513 | break; | |
7514 | ||
7515 | case DW_OP_consts: | |
7516 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
7517 | i += bytes_read; | |
7518 | break; | |
7519 | ||
f1bea926 JM |
7520 | case DW_OP_dup: |
7521 | stack[stacki + 1] = stack[stacki]; | |
7522 | stacki++; | |
7523 | break; | |
7524 | ||
c906108c SS |
7525 | case DW_OP_plus: |
7526 | stack[stacki - 1] += stack[stacki]; | |
7527 | stacki--; | |
7528 | break; | |
7529 | ||
7530 | case DW_OP_plus_uconst: | |
7531 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7532 | i += bytes_read; | |
7533 | break; | |
7534 | ||
7535 | case DW_OP_minus: | |
f1bea926 | 7536 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
7537 | stacki--; |
7538 | break; | |
7539 | ||
7a292a7a | 7540 | case DW_OP_deref: |
7a292a7a | 7541 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
7542 | this using GDB's address_class enum. This is valid for partial |
7543 | global symbols, although the variable's address will be bogus | |
7544 | in the psymtab. */ | |
7a292a7a | 7545 | if (i < size) |
4d3c2250 | 7546 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
7547 | break; |
7548 | ||
9d774e44 | 7549 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
7550 | /* The top of the stack has the offset from the beginning |
7551 | of the thread control block at which the variable is located. */ | |
7552 | /* Nothing should follow this operator, so the top of stack would | |
7553 | be returned. */ | |
4cecd739 DJ |
7554 | /* This is valid for partial global symbols, but the variable's |
7555 | address will be bogus in the psymtab. */ | |
9d774e44 | 7556 | if (i < size) |
4d3c2250 | 7557 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
7558 | break; |
7559 | ||
c906108c | 7560 | default: |
4d3c2250 KB |
7561 | complaint (&symfile_complaints, "unsupported stack op: '%s'", |
7562 | dwarf_stack_op_name (op)); | |
c906108c SS |
7563 | return (stack[stacki]); |
7564 | } | |
7565 | } | |
7566 | return (stack[stacki]); | |
7567 | } | |
7568 | ||
7569 | /* memory allocation interface */ | |
7570 | ||
c906108c | 7571 | static void |
4efb68b1 | 7572 | dwarf2_free_tmp_obstack (void *ignore) |
c906108c SS |
7573 | { |
7574 | obstack_free (&dwarf2_tmp_obstack, NULL); | |
7575 | } | |
7576 | ||
7577 | static struct dwarf_block * | |
fba45db2 | 7578 | dwarf_alloc_block (void) |
c906108c SS |
7579 | { |
7580 | struct dwarf_block *blk; | |
7581 | ||
7582 | blk = (struct dwarf_block *) | |
7583 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct dwarf_block)); | |
7584 | return (blk); | |
7585 | } | |
7586 | ||
7587 | static struct abbrev_info * | |
fba45db2 | 7588 | dwarf_alloc_abbrev (void) |
c906108c SS |
7589 | { |
7590 | struct abbrev_info *abbrev; | |
7591 | ||
7592 | abbrev = (struct abbrev_info *) xmalloc (sizeof (struct abbrev_info)); | |
7593 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
7594 | return (abbrev); | |
7595 | } | |
7596 | ||
7597 | static struct die_info * | |
fba45db2 | 7598 | dwarf_alloc_die (void) |
c906108c SS |
7599 | { |
7600 | struct die_info *die; | |
7601 | ||
7602 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7603 | memset (die, 0, sizeof (struct die_info)); | |
7604 | return (die); | |
7605 | } | |
2e276125 JB |
7606 | |
7607 | \f | |
7608 | /* Macro support. */ | |
7609 | ||
7610 | ||
7611 | /* Return the full name of file number I in *LH's file name table. | |
7612 | Use COMP_DIR as the name of the current directory of the | |
7613 | compilation. The result is allocated using xmalloc; the caller is | |
7614 | responsible for freeing it. */ | |
7615 | static char * | |
7616 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
7617 | { | |
7618 | struct file_entry *fe = &lh->file_names[file - 1]; | |
7619 | ||
7620 | if (IS_ABSOLUTE_PATH (fe->name)) | |
7621 | return xstrdup (fe->name); | |
7622 | else | |
7623 | { | |
7624 | const char *dir; | |
7625 | int dir_len; | |
7626 | char *full_name; | |
7627 | ||
7628 | if (fe->dir_index) | |
7629 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7630 | else | |
7631 | dir = comp_dir; | |
7632 | ||
7633 | if (dir) | |
7634 | { | |
7635 | dir_len = strlen (dir); | |
7636 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
7637 | strcpy (full_name, dir); | |
7638 | full_name[dir_len] = '/'; | |
7639 | strcpy (full_name + dir_len + 1, fe->name); | |
7640 | return full_name; | |
7641 | } | |
7642 | else | |
7643 | return xstrdup (fe->name); | |
7644 | } | |
7645 | } | |
7646 | ||
7647 | ||
7648 | static struct macro_source_file * | |
7649 | macro_start_file (int file, int line, | |
7650 | struct macro_source_file *current_file, | |
7651 | const char *comp_dir, | |
7652 | struct line_header *lh, struct objfile *objfile) | |
7653 | { | |
7654 | /* The full name of this source file. */ | |
7655 | char *full_name = file_full_name (file, lh, comp_dir); | |
7656 | ||
7657 | /* We don't create a macro table for this compilation unit | |
7658 | at all until we actually get a filename. */ | |
7659 | if (! pending_macros) | |
4a146b47 | 7660 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 7661 | objfile->macro_cache); |
2e276125 JB |
7662 | |
7663 | if (! current_file) | |
7664 | /* If we have no current file, then this must be the start_file | |
7665 | directive for the compilation unit's main source file. */ | |
7666 | current_file = macro_set_main (pending_macros, full_name); | |
7667 | else | |
7668 | current_file = macro_include (current_file, line, full_name); | |
7669 | ||
7670 | xfree (full_name); | |
7671 | ||
7672 | return current_file; | |
7673 | } | |
7674 | ||
7675 | ||
7676 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
7677 | followed by a null byte. */ | |
7678 | static char * | |
7679 | copy_string (const char *buf, int len) | |
7680 | { | |
7681 | char *s = xmalloc (len + 1); | |
7682 | memcpy (s, buf, len); | |
7683 | s[len] = '\0'; | |
7684 | ||
7685 | return s; | |
7686 | } | |
7687 | ||
7688 | ||
7689 | static const char * | |
7690 | consume_improper_spaces (const char *p, const char *body) | |
7691 | { | |
7692 | if (*p == ' ') | |
7693 | { | |
4d3c2250 KB |
7694 | complaint (&symfile_complaints, |
7695 | "macro definition contains spaces in formal argument list:\n`%s'", | |
7696 | body); | |
2e276125 JB |
7697 | |
7698 | while (*p == ' ') | |
7699 | p++; | |
7700 | } | |
7701 | ||
7702 | return p; | |
7703 | } | |
7704 | ||
7705 | ||
7706 | static void | |
7707 | parse_macro_definition (struct macro_source_file *file, int line, | |
7708 | const char *body) | |
7709 | { | |
7710 | const char *p; | |
7711 | ||
7712 | /* The body string takes one of two forms. For object-like macro | |
7713 | definitions, it should be: | |
7714 | ||
7715 | <macro name> " " <definition> | |
7716 | ||
7717 | For function-like macro definitions, it should be: | |
7718 | ||
7719 | <macro name> "() " <definition> | |
7720 | or | |
7721 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
7722 | ||
7723 | Spaces may appear only where explicitly indicated, and in the | |
7724 | <definition>. | |
7725 | ||
7726 | The Dwarf 2 spec says that an object-like macro's name is always | |
7727 | followed by a space, but versions of GCC around March 2002 omit | |
7728 | the space when the macro's definition is the empty string. | |
7729 | ||
7730 | The Dwarf 2 spec says that there should be no spaces between the | |
7731 | formal arguments in a function-like macro's formal argument list, | |
7732 | but versions of GCC around March 2002 include spaces after the | |
7733 | commas. */ | |
7734 | ||
7735 | ||
7736 | /* Find the extent of the macro name. The macro name is terminated | |
7737 | by either a space or null character (for an object-like macro) or | |
7738 | an opening paren (for a function-like macro). */ | |
7739 | for (p = body; *p; p++) | |
7740 | if (*p == ' ' || *p == '(') | |
7741 | break; | |
7742 | ||
7743 | if (*p == ' ' || *p == '\0') | |
7744 | { | |
7745 | /* It's an object-like macro. */ | |
7746 | int name_len = p - body; | |
7747 | char *name = copy_string (body, name_len); | |
7748 | const char *replacement; | |
7749 | ||
7750 | if (*p == ' ') | |
7751 | replacement = body + name_len + 1; | |
7752 | else | |
7753 | { | |
4d3c2250 | 7754 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7755 | replacement = body + name_len; |
7756 | } | |
7757 | ||
7758 | macro_define_object (file, line, name, replacement); | |
7759 | ||
7760 | xfree (name); | |
7761 | } | |
7762 | else if (*p == '(') | |
7763 | { | |
7764 | /* It's a function-like macro. */ | |
7765 | char *name = copy_string (body, p - body); | |
7766 | int argc = 0; | |
7767 | int argv_size = 1; | |
7768 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
7769 | ||
7770 | p++; | |
7771 | ||
7772 | p = consume_improper_spaces (p, body); | |
7773 | ||
7774 | /* Parse the formal argument list. */ | |
7775 | while (*p && *p != ')') | |
7776 | { | |
7777 | /* Find the extent of the current argument name. */ | |
7778 | const char *arg_start = p; | |
7779 | ||
7780 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
7781 | p++; | |
7782 | ||
7783 | if (! *p || p == arg_start) | |
4d3c2250 | 7784 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7785 | else |
7786 | { | |
7787 | /* Make sure argv has room for the new argument. */ | |
7788 | if (argc >= argv_size) | |
7789 | { | |
7790 | argv_size *= 2; | |
7791 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
7792 | } | |
7793 | ||
7794 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
7795 | } | |
7796 | ||
7797 | p = consume_improper_spaces (p, body); | |
7798 | ||
7799 | /* Consume the comma, if present. */ | |
7800 | if (*p == ',') | |
7801 | { | |
7802 | p++; | |
7803 | ||
7804 | p = consume_improper_spaces (p, body); | |
7805 | } | |
7806 | } | |
7807 | ||
7808 | if (*p == ')') | |
7809 | { | |
7810 | p++; | |
7811 | ||
7812 | if (*p == ' ') | |
7813 | /* Perfectly formed definition, no complaints. */ | |
7814 | macro_define_function (file, line, name, | |
7815 | argc, (const char **) argv, | |
7816 | p + 1); | |
7817 | else if (*p == '\0') | |
7818 | { | |
7819 | /* Complain, but do define it. */ | |
4d3c2250 | 7820 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7821 | macro_define_function (file, line, name, |
7822 | argc, (const char **) argv, | |
7823 | p); | |
7824 | } | |
7825 | else | |
7826 | /* Just complain. */ | |
4d3c2250 | 7827 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7828 | } |
7829 | else | |
7830 | /* Just complain. */ | |
4d3c2250 | 7831 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7832 | |
7833 | xfree (name); | |
7834 | { | |
7835 | int i; | |
7836 | ||
7837 | for (i = 0; i < argc; i++) | |
7838 | xfree (argv[i]); | |
7839 | } | |
7840 | xfree (argv); | |
7841 | } | |
7842 | else | |
4d3c2250 | 7843 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7844 | } |
7845 | ||
7846 | ||
7847 | static void | |
7848 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
7849 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 7850 | struct dwarf2_cu *cu) |
2e276125 JB |
7851 | { |
7852 | char *mac_ptr, *mac_end; | |
7853 | struct macro_source_file *current_file = 0; | |
7854 | ||
7855 | if (dwarf_macinfo_buffer == NULL) | |
7856 | { | |
4d3c2250 | 7857 | complaint (&symfile_complaints, "missing .debug_macinfo section"); |
2e276125 JB |
7858 | return; |
7859 | } | |
7860 | ||
7861 | mac_ptr = dwarf_macinfo_buffer + offset; | |
7862 | mac_end = dwarf_macinfo_buffer + dwarf_macinfo_size; | |
7863 | ||
7864 | for (;;) | |
7865 | { | |
7866 | enum dwarf_macinfo_record_type macinfo_type; | |
7867 | ||
7868 | /* Do we at least have room for a macinfo type byte? */ | |
7869 | if (mac_ptr >= mac_end) | |
7870 | { | |
4d3c2250 | 7871 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
7872 | return; |
7873 | } | |
7874 | ||
7875 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
7876 | mac_ptr++; | |
7877 | ||
7878 | switch (macinfo_type) | |
7879 | { | |
7880 | /* A zero macinfo type indicates the end of the macro | |
7881 | information. */ | |
7882 | case 0: | |
7883 | return; | |
7884 | ||
7885 | case DW_MACINFO_define: | |
7886 | case DW_MACINFO_undef: | |
7887 | { | |
7888 | int bytes_read; | |
7889 | int line; | |
7890 | char *body; | |
7891 | ||
7892 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7893 | mac_ptr += bytes_read; | |
7894 | body = read_string (abfd, mac_ptr, &bytes_read); | |
7895 | mac_ptr += bytes_read; | |
7896 | ||
7897 | if (! current_file) | |
4d3c2250 KB |
7898 | complaint (&symfile_complaints, |
7899 | "debug info gives macro %s outside of any file: %s", | |
7900 | macinfo_type == | |
7901 | DW_MACINFO_define ? "definition" : macinfo_type == | |
7902 | DW_MACINFO_undef ? "undefinition" : | |
7903 | "something-or-other", body); | |
2e276125 JB |
7904 | else |
7905 | { | |
7906 | if (macinfo_type == DW_MACINFO_define) | |
7907 | parse_macro_definition (current_file, line, body); | |
7908 | else if (macinfo_type == DW_MACINFO_undef) | |
7909 | macro_undef (current_file, line, body); | |
7910 | } | |
7911 | } | |
7912 | break; | |
7913 | ||
7914 | case DW_MACINFO_start_file: | |
7915 | { | |
7916 | int bytes_read; | |
7917 | int line, file; | |
7918 | ||
7919 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7920 | mac_ptr += bytes_read; | |
7921 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7922 | mac_ptr += bytes_read; | |
7923 | ||
7924 | current_file = macro_start_file (file, line, | |
7925 | current_file, comp_dir, | |
e7c27a73 | 7926 | lh, cu->objfile); |
2e276125 JB |
7927 | } |
7928 | break; | |
7929 | ||
7930 | case DW_MACINFO_end_file: | |
7931 | if (! current_file) | |
4d3c2250 KB |
7932 | complaint (&symfile_complaints, |
7933 | "macro debug info has an unmatched `close_file' directive"); | |
2e276125 JB |
7934 | else |
7935 | { | |
7936 | current_file = current_file->included_by; | |
7937 | if (! current_file) | |
7938 | { | |
7939 | enum dwarf_macinfo_record_type next_type; | |
7940 | ||
7941 | /* GCC circa March 2002 doesn't produce the zero | |
7942 | type byte marking the end of the compilation | |
7943 | unit. Complain if it's not there, but exit no | |
7944 | matter what. */ | |
7945 | ||
7946 | /* Do we at least have room for a macinfo type byte? */ | |
7947 | if (mac_ptr >= mac_end) | |
7948 | { | |
4d3c2250 | 7949 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
7950 | return; |
7951 | } | |
7952 | ||
7953 | /* We don't increment mac_ptr here, so this is just | |
7954 | a look-ahead. */ | |
7955 | next_type = read_1_byte (abfd, mac_ptr); | |
7956 | if (next_type != 0) | |
4d3c2250 KB |
7957 | complaint (&symfile_complaints, |
7958 | "no terminating 0-type entry for macros in `.debug_macinfo' section"); | |
2e276125 JB |
7959 | |
7960 | return; | |
7961 | } | |
7962 | } | |
7963 | break; | |
7964 | ||
7965 | case DW_MACINFO_vendor_ext: | |
7966 | { | |
7967 | int bytes_read; | |
7968 | int constant; | |
7969 | char *string; | |
7970 | ||
7971 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
7972 | mac_ptr += bytes_read; | |
7973 | string = read_string (abfd, mac_ptr, &bytes_read); | |
7974 | mac_ptr += bytes_read; | |
7975 | ||
7976 | /* We don't recognize any vendor extensions. */ | |
7977 | } | |
7978 | break; | |
7979 | } | |
7980 | } | |
7981 | } | |
8e19ed76 PS |
7982 | |
7983 | /* Check if the attribute's form is a DW_FORM_block* | |
7984 | if so return true else false. */ | |
7985 | static int | |
7986 | attr_form_is_block (struct attribute *attr) | |
7987 | { | |
7988 | return (attr == NULL ? 0 : | |
7989 | attr->form == DW_FORM_block1 | |
7990 | || attr->form == DW_FORM_block2 | |
7991 | || attr->form == DW_FORM_block4 | |
7992 | || attr->form == DW_FORM_block); | |
7993 | } | |
4c2df51b DJ |
7994 | |
7995 | static void | |
7996 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 7997 | struct dwarf2_cu *cu) |
4c2df51b | 7998 | { |
0d53c4c4 | 7999 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 8000 | { |
0d53c4c4 | 8001 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 8002 | |
4a146b47 | 8003 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8004 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 8005 | baton->objfile = cu->objfile; |
4c2df51b | 8006 | |
0d53c4c4 DJ |
8007 | /* We don't know how long the location list is, but make sure we |
8008 | don't run off the edge of the section. */ | |
8009 | baton->size = dwarf_loc_size - DW_UNSND (attr); | |
8010 | baton->data = dwarf_loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
8011 | baton->base_address = cu->header.base_address; |
8012 | if (cu->header.base_known == 0) | |
0d53c4c4 DJ |
8013 | complaint (&symfile_complaints, |
8014 | "Location list used without specifying the CU base address."); | |
4c2df51b | 8015 | |
a67af2b9 | 8016 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
8017 | SYMBOL_LOCATION_BATON (sym) = baton; |
8018 | } | |
8019 | else | |
8020 | { | |
8021 | struct dwarf2_locexpr_baton *baton; | |
8022 | ||
4a146b47 | 8023 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8024 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 8025 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
8026 | |
8027 | if (attr_form_is_block (attr)) | |
8028 | { | |
8029 | /* Note that we're just copying the block's data pointer | |
8030 | here, not the actual data. We're still pointing into the | |
8031 | dwarf_info_buffer for SYM's objfile; right now we never | |
8032 | release that buffer, but when we do clean up properly | |
8033 | this may need to change. */ | |
8034 | baton->size = DW_BLOCK (attr)->size; | |
8035 | baton->data = DW_BLOCK (attr)->data; | |
8036 | } | |
8037 | else | |
8038 | { | |
8039 | dwarf2_invalid_attrib_class_complaint ("location description", | |
8040 | SYMBOL_NATURAL_NAME (sym)); | |
8041 | baton->size = 0; | |
8042 | baton->data = NULL; | |
8043 | } | |
8044 | ||
a67af2b9 | 8045 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
8046 | SYMBOL_LOCATION_BATON (sym) = baton; |
8047 | } | |
4c2df51b | 8048 | } |