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ccefe4c4 TT |
1 | /* Partial symbol tables. |
2 | ||
3 | Copyright (C) 2009, 2010 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "psympriv.h" | |
23 | #include "objfiles.h" | |
24 | #include "gdb_assert.h" | |
25 | #include "block.h" | |
26 | #include "filenames.h" | |
27 | #include "source.h" | |
28 | #include "addrmap.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "bcache.h" | |
31 | #include "ui-out.h" | |
32 | #include "command.h" | |
33 | #include "readline/readline.h" | |
34 | #include "gdb_regex.h" | |
35 | ||
36 | #ifndef DEV_TTY | |
37 | #define DEV_TTY "/dev/tty" | |
38 | #endif | |
39 | ||
40 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
41 | #define PSYMTAB_TO_SYMTAB(pst) \ | |
42 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
43 | ||
44 | /* Lookup a partial symbol. */ | |
45 | static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *, | |
46 | const char *, int, | |
47 | domain_enum); | |
48 | ||
49 | static char *psymtab_to_fullname (struct partial_symtab *ps); | |
50 | ||
51 | static struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *, | |
52 | CORE_ADDR, | |
53 | struct obj_section *); | |
54 | ||
55 | static struct partial_symbol *fixup_psymbol_section (struct partial_symbol | |
56 | *psym, | |
57 | struct objfile *objfile); | |
58 | ||
59 | static struct symtab *psymtab_to_symtab (struct partial_symtab *pst); | |
60 | ||
61 | /* Lookup the partial symbol table of a source file named NAME. | |
62 | *If* there is no '/' in the name, a match after a '/' | |
63 | in the psymtab filename will also work. */ | |
64 | ||
65 | static struct partial_symtab * | |
66 | lookup_partial_symtab (struct objfile *objfile, const char *name, | |
67 | const char *full_path, const char *real_path) | |
68 | { | |
69 | struct partial_symtab *pst; | |
70 | ||
71 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
72 | { | |
73 | if (FILENAME_CMP (name, pst->filename) == 0) | |
74 | { | |
75 | return (pst); | |
76 | } | |
77 | ||
78 | /* If the user gave us an absolute path, try to find the file in | |
79 | this symtab and use its absolute path. */ | |
80 | if (full_path != NULL) | |
81 | { | |
82 | psymtab_to_fullname (pst); | |
83 | if (pst->fullname != NULL | |
84 | && FILENAME_CMP (full_path, pst->fullname) == 0) | |
85 | { | |
86 | return pst; | |
87 | } | |
88 | } | |
89 | ||
90 | if (real_path != NULL) | |
91 | { | |
92 | char *rp = NULL; | |
93 | psymtab_to_fullname (pst); | |
94 | if (pst->fullname != NULL) | |
95 | { | |
96 | rp = gdb_realpath (pst->fullname); | |
97 | make_cleanup (xfree, rp); | |
98 | } | |
99 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
100 | { | |
101 | return pst; | |
102 | } | |
103 | } | |
104 | } | |
105 | ||
106 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ | |
107 | ||
108 | if (lbasename (name) == name) | |
109 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
110 | { | |
111 | if (FILENAME_CMP (lbasename (pst->filename), name) == 0) | |
112 | return (pst); | |
113 | } | |
114 | ||
115 | return (NULL); | |
116 | } | |
117 | ||
118 | static int | |
119 | lookup_symtab_via_partial_symtab (struct objfile *objfile, const char *name, | |
120 | const char *full_path, const char *real_path, | |
121 | struct symtab **result) | |
122 | { | |
123 | struct partial_symtab *ps; | |
124 | ||
125 | ps = lookup_partial_symtab (objfile, name, full_path, real_path); | |
126 | if (!ps) | |
127 | return 0; | |
128 | ||
129 | if (ps->readin) | |
130 | error (_("Internal: readin %s pst for `%s' found when no symtab found."), | |
131 | ps->filename, name); | |
132 | ||
133 | *result = PSYMTAB_TO_SYMTAB (ps); | |
134 | return 1; | |
135 | } | |
136 | ||
137 | /* Find which partial symtab contains PC and SECTION starting at psymtab PST. | |
138 | We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */ | |
139 | ||
140 | static struct partial_symtab * | |
141 | find_pc_sect_psymtab_closer (CORE_ADDR pc, struct obj_section *section, | |
142 | struct partial_symtab *pst, | |
143 | struct minimal_symbol *msymbol) | |
144 | { | |
145 | struct objfile *objfile = pst->objfile; | |
146 | struct partial_symtab *tpst; | |
147 | struct partial_symtab *best_pst = pst; | |
148 | CORE_ADDR best_addr = pst->textlow; | |
149 | ||
150 | /* An objfile that has its functions reordered might have | |
151 | many partial symbol tables containing the PC, but | |
152 | we want the partial symbol table that contains the | |
153 | function containing the PC. */ | |
154 | if (!(objfile->flags & OBJF_REORDERED) && | |
155 | section == 0) /* can't validate section this way */ | |
156 | return pst; | |
157 | ||
158 | if (msymbol == NULL) | |
159 | return (pst); | |
160 | ||
161 | /* The code range of partial symtabs sometimes overlap, so, in | |
162 | the loop below, we need to check all partial symtabs and | |
163 | find the one that fits better for the given PC address. We | |
164 | select the partial symtab that contains a symbol whose | |
165 | address is closest to the PC address. By closest we mean | |
166 | that find_pc_sect_symbol returns the symbol with address | |
167 | that is closest and still less than the given PC. */ | |
168 | for (tpst = pst; tpst != NULL; tpst = tpst->next) | |
169 | { | |
170 | if (pc >= tpst->textlow && pc < tpst->texthigh) | |
171 | { | |
172 | struct partial_symbol *p; | |
173 | CORE_ADDR this_addr; | |
174 | ||
175 | /* NOTE: This assumes that every psymbol has a | |
176 | corresponding msymbol, which is not necessarily | |
177 | true; the debug info might be much richer than the | |
178 | object's symbol table. */ | |
179 | p = find_pc_sect_psymbol (tpst, pc, section); | |
180 | if (p != NULL | |
181 | && SYMBOL_VALUE_ADDRESS (p) | |
182 | == SYMBOL_VALUE_ADDRESS (msymbol)) | |
183 | return tpst; | |
184 | ||
185 | /* Also accept the textlow value of a psymtab as a | |
186 | "symbol", to provide some support for partial | |
187 | symbol tables with line information but no debug | |
188 | symbols (e.g. those produced by an assembler). */ | |
189 | if (p != NULL) | |
190 | this_addr = SYMBOL_VALUE_ADDRESS (p); | |
191 | else | |
192 | this_addr = tpst->textlow; | |
193 | ||
194 | /* Check whether it is closer than our current | |
195 | BEST_ADDR. Since this symbol address is | |
196 | necessarily lower or equal to PC, the symbol closer | |
197 | to PC is the symbol which address is the highest. | |
198 | This way we return the psymtab which contains such | |
199 | best match symbol. This can help in cases where the | |
200 | symbol information/debuginfo is not complete, like | |
201 | for instance on IRIX6 with gcc, where no debug info | |
202 | is emitted for statics. (See also the nodebug.exp | |
203 | testcase.) */ | |
204 | if (this_addr > best_addr) | |
205 | { | |
206 | best_addr = this_addr; | |
207 | best_pst = tpst; | |
208 | } | |
209 | } | |
210 | } | |
211 | return best_pst; | |
212 | } | |
213 | ||
214 | /* Find which partial symtab contains PC and SECTION. Return 0 if | |
215 | none. We return the psymtab that contains a symbol whose address | |
216 | exactly matches PC, or, if we cannot find an exact match, the | |
217 | psymtab that contains a symbol whose address is closest to PC. */ | |
218 | static struct partial_symtab * | |
219 | find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc, | |
220 | struct obj_section *section, | |
221 | struct minimal_symbol *msymbol) | |
222 | { | |
223 | struct partial_symtab *pst; | |
224 | ||
225 | /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity | |
226 | than the later used TEXTLOW/TEXTHIGH one. */ | |
227 | ||
228 | if (objfile->psymtabs_addrmap != NULL) | |
229 | { | |
230 | pst = addrmap_find (objfile->psymtabs_addrmap, pc); | |
231 | if (pst != NULL) | |
232 | { | |
233 | /* FIXME: addrmaps currently do not handle overlayed sections, | |
234 | so fall back to the non-addrmap case if we're debugging | |
235 | overlays and the addrmap returned the wrong section. */ | |
236 | if (overlay_debugging && msymbol && section) | |
237 | { | |
238 | struct partial_symbol *p; | |
239 | /* NOTE: This assumes that every psymbol has a | |
240 | corresponding msymbol, which is not necessarily | |
241 | true; the debug info might be much richer than the | |
242 | object's symbol table. */ | |
243 | p = find_pc_sect_psymbol (pst, pc, section); | |
244 | if (!p | |
245 | || SYMBOL_VALUE_ADDRESS (p) | |
246 | != SYMBOL_VALUE_ADDRESS (msymbol)) | |
247 | goto next; | |
248 | } | |
249 | ||
250 | /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as | |
251 | PSYMTABS_ADDRMAP we used has already the best 1-byte | |
252 | granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into | |
253 | a worse chosen section due to the TEXTLOW/TEXTHIGH ranges | |
254 | overlap. */ | |
255 | ||
256 | return pst; | |
257 | } | |
258 | } | |
259 | ||
260 | next: | |
261 | ||
262 | /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs | |
263 | which still have no corresponding full SYMTABs read. But it is not | |
264 | present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB | |
265 | so far. */ | |
266 | ||
267 | /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of | |
268 | its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying | |
269 | debug info type in single OBJFILE. */ | |
270 | ||
271 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
272 | if (pc >= pst->textlow && pc < pst->texthigh) | |
273 | { | |
274 | struct partial_symtab *best_pst; | |
275 | ||
276 | best_pst = find_pc_sect_psymtab_closer (pc, section, pst, msymbol); | |
277 | if (best_pst != NULL) | |
278 | return best_pst; | |
279 | } | |
280 | ||
281 | return NULL; | |
282 | } | |
283 | ||
284 | static struct symtab * | |
285 | find_pc_sect_symtab_from_partial (struct objfile *objfile, | |
286 | struct minimal_symbol *msymbol, | |
287 | CORE_ADDR pc, struct obj_section *section, | |
288 | int warn_if_readin) | |
289 | { | |
290 | struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section, | |
291 | msymbol); | |
292 | if (ps) | |
293 | { | |
294 | if (warn_if_readin && ps->readin) | |
295 | /* Might want to error() here (in case symtab is corrupt and | |
296 | will cause a core dump), but maybe we can successfully | |
297 | continue, so let's not. */ | |
298 | warning (_("\ | |
299 | (Internal error: pc %s in read in psymtab, but not in symtab.)\n"), | |
300 | paddress (get_objfile_arch (ps->objfile), pc)); | |
301 | return PSYMTAB_TO_SYMTAB (ps); | |
302 | } | |
303 | return NULL; | |
304 | } | |
305 | ||
306 | /* Find which partial symbol within a psymtab matches PC and SECTION. | |
307 | Return 0 if none. */ | |
308 | ||
309 | static struct partial_symbol * | |
310 | find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc, | |
311 | struct obj_section *section) | |
312 | { | |
313 | struct partial_symbol *best = NULL, *p, **pp; | |
314 | CORE_ADDR best_pc; | |
315 | ||
316 | gdb_assert (psymtab != NULL); | |
317 | ||
318 | /* Cope with programs that start at address 0 */ | |
319 | best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; | |
320 | ||
321 | /* Search the global symbols as well as the static symbols, so that | |
322 | find_pc_partial_function doesn't use a minimal symbol and thus | |
323 | cache a bad endaddr. */ | |
324 | for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset; | |
325 | (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset) | |
326 | < psymtab->n_global_syms); | |
327 | pp++) | |
328 | { | |
329 | p = *pp; | |
330 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN | |
331 | && SYMBOL_CLASS (p) == LOC_BLOCK | |
332 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
333 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
334 | || (psymtab->textlow == 0 | |
335 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) | |
336 | { | |
337 | if (section) /* match on a specific section */ | |
338 | { | |
339 | fixup_psymbol_section (p, psymtab->objfile); | |
340 | if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section)) | |
341 | continue; | |
342 | } | |
343 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
344 | best = p; | |
345 | } | |
346 | } | |
347 | ||
348 | for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset; | |
349 | (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset) | |
350 | < psymtab->n_static_syms); | |
351 | pp++) | |
352 | { | |
353 | p = *pp; | |
354 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN | |
355 | && SYMBOL_CLASS (p) == LOC_BLOCK | |
356 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
357 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
358 | || (psymtab->textlow == 0 | |
359 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) | |
360 | { | |
361 | if (section) /* match on a specific section */ | |
362 | { | |
363 | fixup_psymbol_section (p, psymtab->objfile); | |
364 | if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section)) | |
365 | continue; | |
366 | } | |
367 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
368 | best = p; | |
369 | } | |
370 | } | |
371 | ||
372 | return best; | |
373 | } | |
374 | ||
375 | static struct partial_symbol * | |
376 | fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) | |
377 | { | |
378 | CORE_ADDR addr; | |
379 | ||
380 | if (!psym) | |
381 | return NULL; | |
382 | ||
383 | if (SYMBOL_OBJ_SECTION (psym)) | |
384 | return psym; | |
385 | ||
386 | gdb_assert (objfile); | |
387 | ||
388 | switch (SYMBOL_CLASS (psym)) | |
389 | { | |
390 | case LOC_STATIC: | |
391 | case LOC_LABEL: | |
392 | case LOC_BLOCK: | |
393 | addr = SYMBOL_VALUE_ADDRESS (psym); | |
394 | break; | |
395 | default: | |
396 | /* Nothing else will be listed in the minsyms -- no use looking | |
397 | it up. */ | |
398 | return psym; | |
399 | } | |
400 | ||
401 | fixup_section (&psym->ginfo, addr, objfile); | |
402 | ||
403 | return psym; | |
404 | } | |
405 | ||
406 | static struct symtab * | |
407 | lookup_symbol_aux_psymtabs (struct objfile *objfile, | |
408 | int block_index, const char *name, | |
409 | const domain_enum domain) | |
410 | { | |
411 | struct partial_symtab *ps; | |
412 | const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0); | |
413 | ||
414 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
415 | { | |
416 | if (!ps->readin && lookup_partial_symbol (ps, name, psymtab_index, domain)) | |
417 | return PSYMTAB_TO_SYMTAB (ps); | |
418 | } | |
419 | ||
420 | return NULL; | |
421 | } | |
422 | ||
423 | /* Look, in partial_symtab PST, for symbol whose natural name is NAME. | |
424 | Check the global symbols if GLOBAL, the static symbols if not. */ | |
425 | ||
426 | struct partial_symbol * | |
427 | lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
428 | int global, domain_enum domain) | |
429 | { | |
ccefe4c4 TT |
430 | struct partial_symbol **start, **psym; |
431 | struct partial_symbol **top, **real_top, **bottom, **center; | |
432 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
433 | int do_linear_search = 1; | |
434 | ||
435 | if (length == 0) | |
436 | { | |
437 | return (NULL); | |
438 | } | |
439 | start = (global ? | |
440 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
441 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
442 | ||
443 | if (global) /* This means we can use a binary search. */ | |
444 | { | |
445 | do_linear_search = 0; | |
446 | ||
447 | /* Binary search. This search is guaranteed to end with center | |
448 | pointing at the earliest partial symbol whose name might be | |
449 | correct. At that point *all* partial symbols with an | |
450 | appropriate name will be checked against the correct | |
451 | domain. */ | |
452 | ||
453 | bottom = start; | |
454 | top = start + length - 1; | |
455 | real_top = top; | |
456 | while (top > bottom) | |
457 | { | |
458 | center = bottom + (top - bottom) / 2; | |
459 | if (!(center < top)) | |
460 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); | |
461 | if (!do_linear_search | |
462 | && (SYMBOL_LANGUAGE (*center) == language_java)) | |
463 | { | |
464 | do_linear_search = 1; | |
465 | } | |
466 | if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0) | |
467 | { | |
468 | top = center; | |
469 | } | |
470 | else | |
471 | { | |
472 | bottom = center + 1; | |
473 | } | |
474 | } | |
475 | if (!(top == bottom)) | |
476 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); | |
477 | ||
478 | while (top <= real_top | |
479 | && SYMBOL_MATCHES_SEARCH_NAME (*top, name)) | |
480 | { | |
481 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*top), | |
482 | SYMBOL_DOMAIN (*top), domain)) | |
483 | return (*top); | |
484 | top++; | |
485 | } | |
486 | } | |
487 | ||
488 | /* Can't use a binary search or else we found during the binary search that | |
489 | we should also do a linear search. */ | |
490 | ||
491 | if (do_linear_search) | |
492 | { | |
493 | for (psym = start; psym < start + length; psym++) | |
494 | { | |
495 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym), | |
496 | SYMBOL_DOMAIN (*psym), domain) | |
497 | && SYMBOL_MATCHES_SEARCH_NAME (*psym, name)) | |
498 | return (*psym); | |
499 | } | |
500 | } | |
501 | ||
502 | return (NULL); | |
503 | } | |
504 | ||
505 | /* Get the symbol table that corresponds to a partial_symtab. | |
506 | This is fast after the first time you do it. In fact, there | |
507 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
508 | case inline. */ | |
509 | ||
510 | static struct symtab * | |
511 | psymtab_to_symtab (struct partial_symtab *pst) | |
512 | { | |
513 | /* If it's been looked up before, return it. */ | |
514 | if (pst->symtab) | |
515 | return pst->symtab; | |
516 | ||
517 | /* If it has not yet been read in, read it. */ | |
518 | if (!pst->readin) | |
519 | { | |
520 | struct cleanup *back_to = increment_reading_symtab (); | |
521 | (*pst->read_symtab) (pst); | |
522 | do_cleanups (back_to); | |
523 | } | |
524 | ||
525 | return pst->symtab; | |
526 | } | |
527 | ||
528 | static void | |
529 | relocate_psymtabs (struct objfile *objfile, | |
530 | struct section_offsets *new_offsets, | |
531 | struct section_offsets *delta) | |
532 | { | |
533 | struct partial_symbol **psym; | |
534 | struct partial_symtab *p; | |
535 | ||
536 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
537 | { | |
538 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
539 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
540 | } | |
541 | ||
542 | for (psym = objfile->global_psymbols.list; | |
543 | psym < objfile->global_psymbols.next; | |
544 | psym++) | |
545 | { | |
546 | fixup_psymbol_section (*psym, objfile); | |
547 | if (SYMBOL_SECTION (*psym) >= 0) | |
548 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
549 | SYMBOL_SECTION (*psym)); | |
550 | } | |
551 | for (psym = objfile->static_psymbols.list; | |
552 | psym < objfile->static_psymbols.next; | |
553 | psym++) | |
554 | { | |
555 | fixup_psymbol_section (*psym, objfile); | |
556 | if (SYMBOL_SECTION (*psym) >= 0) | |
557 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
558 | SYMBOL_SECTION (*psym)); | |
559 | } | |
560 | } | |
561 | ||
562 | static struct symtab * | |
563 | find_last_source_symtab_from_partial (struct objfile *ofp) | |
564 | { | |
ccefe4c4 TT |
565 | struct partial_symtab *ps; |
566 | struct partial_symtab *cs_pst = 0; | |
567 | ||
568 | ALL_OBJFILE_PSYMTABS (ofp, ps) | |
569 | { | |
570 | const char *name = ps->filename; | |
571 | int len = strlen (name); | |
572 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
573 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
574 | cs_pst = ps; | |
575 | } | |
576 | ||
577 | if (cs_pst) | |
578 | { | |
579 | if (cs_pst->readin) | |
580 | { | |
581 | internal_error (__FILE__, __LINE__, | |
582 | _("select_source_symtab: " | |
583 | "readin pst found and no symtabs.")); | |
584 | } | |
585 | else | |
586 | return PSYMTAB_TO_SYMTAB (cs_pst); | |
587 | } | |
588 | return NULL; | |
589 | } | |
590 | ||
591 | static void | |
592 | forget_cached_source_info_partial (struct objfile *objfile) | |
593 | { | |
594 | struct partial_symtab *pst; | |
595 | ||
596 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
597 | { | |
598 | if (pst->fullname != NULL) | |
599 | { | |
600 | xfree (pst->fullname); | |
601 | pst->fullname = NULL; | |
602 | } | |
603 | } | |
604 | } | |
605 | ||
606 | static void | |
607 | print_partial_symbols (struct gdbarch *gdbarch, | |
608 | struct partial_symbol **p, int count, char *what, | |
609 | struct ui_file *outfile) | |
610 | { | |
611 | fprintf_filtered (outfile, " %s partial symbols:\n", what); | |
612 | while (count-- > 0) | |
613 | { | |
614 | fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p)); | |
615 | if (SYMBOL_DEMANGLED_NAME (*p) != NULL) | |
616 | { | |
617 | fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p)); | |
618 | } | |
619 | fputs_filtered (", ", outfile); | |
620 | switch (SYMBOL_DOMAIN (*p)) | |
621 | { | |
622 | case UNDEF_DOMAIN: | |
623 | fputs_filtered ("undefined domain, ", outfile); | |
624 | break; | |
625 | case VAR_DOMAIN: | |
626 | /* This is the usual thing -- don't print it */ | |
627 | break; | |
628 | case STRUCT_DOMAIN: | |
629 | fputs_filtered ("struct domain, ", outfile); | |
630 | break; | |
631 | case LABEL_DOMAIN: | |
632 | fputs_filtered ("label domain, ", outfile); | |
633 | break; | |
634 | default: | |
635 | fputs_filtered ("<invalid domain>, ", outfile); | |
636 | break; | |
637 | } | |
638 | switch (SYMBOL_CLASS (*p)) | |
639 | { | |
640 | case LOC_UNDEF: | |
641 | fputs_filtered ("undefined", outfile); | |
642 | break; | |
643 | case LOC_CONST: | |
644 | fputs_filtered ("constant int", outfile); | |
645 | break; | |
646 | case LOC_STATIC: | |
647 | fputs_filtered ("static", outfile); | |
648 | break; | |
649 | case LOC_REGISTER: | |
650 | fputs_filtered ("register", outfile); | |
651 | break; | |
652 | case LOC_ARG: | |
653 | fputs_filtered ("pass by value", outfile); | |
654 | break; | |
655 | case LOC_REF_ARG: | |
656 | fputs_filtered ("pass by reference", outfile); | |
657 | break; | |
658 | case LOC_REGPARM_ADDR: | |
659 | fputs_filtered ("register address parameter", outfile); | |
660 | break; | |
661 | case LOC_LOCAL: | |
662 | fputs_filtered ("stack parameter", outfile); | |
663 | break; | |
664 | case LOC_TYPEDEF: | |
665 | fputs_filtered ("type", outfile); | |
666 | break; | |
667 | case LOC_LABEL: | |
668 | fputs_filtered ("label", outfile); | |
669 | break; | |
670 | case LOC_BLOCK: | |
671 | fputs_filtered ("function", outfile); | |
672 | break; | |
673 | case LOC_CONST_BYTES: | |
674 | fputs_filtered ("constant bytes", outfile); | |
675 | break; | |
676 | case LOC_UNRESOLVED: | |
677 | fputs_filtered ("unresolved", outfile); | |
678 | break; | |
679 | case LOC_OPTIMIZED_OUT: | |
680 | fputs_filtered ("optimized out", outfile); | |
681 | break; | |
682 | case LOC_COMPUTED: | |
683 | fputs_filtered ("computed at runtime", outfile); | |
684 | break; | |
685 | default: | |
686 | fputs_filtered ("<invalid location>", outfile); | |
687 | break; | |
688 | } | |
689 | fputs_filtered (", ", outfile); | |
690 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile); | |
691 | fprintf_filtered (outfile, "\n"); | |
692 | p++; | |
693 | } | |
694 | } | |
695 | ||
696 | static void | |
697 | dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab, | |
698 | struct ui_file *outfile) | |
699 | { | |
700 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
701 | int i; | |
702 | ||
703 | fprintf_filtered (outfile, "\nPartial symtab for source file %s ", | |
704 | psymtab->filename); | |
705 | fprintf_filtered (outfile, "(object "); | |
706 | gdb_print_host_address (psymtab, outfile); | |
707 | fprintf_filtered (outfile, ")\n\n"); | |
708 | fprintf_unfiltered (outfile, " Read from object file %s (", | |
709 | objfile->name); | |
710 | gdb_print_host_address (objfile, outfile); | |
711 | fprintf_unfiltered (outfile, ")\n"); | |
712 | ||
713 | if (psymtab->readin) | |
714 | { | |
715 | fprintf_filtered (outfile, | |
716 | " Full symtab was read (at "); | |
717 | gdb_print_host_address (psymtab->symtab, outfile); | |
718 | fprintf_filtered (outfile, " by function at "); | |
719 | gdb_print_host_address (psymtab->read_symtab, outfile); | |
720 | fprintf_filtered (outfile, ")\n"); | |
721 | } | |
722 | ||
723 | fprintf_filtered (outfile, " Relocate symbols by "); | |
724 | for (i = 0; i < psymtab->objfile->num_sections; ++i) | |
725 | { | |
726 | if (i != 0) | |
727 | fprintf_filtered (outfile, ", "); | |
728 | wrap_here (" "); | |
729 | fputs_filtered (paddress (gdbarch, | |
730 | ANOFFSET (psymtab->section_offsets, i)), | |
731 | outfile); | |
732 | } | |
733 | fprintf_filtered (outfile, "\n"); | |
734 | ||
735 | fprintf_filtered (outfile, " Symbols cover text addresses "); | |
736 | fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile); | |
737 | fprintf_filtered (outfile, "-"); | |
738 | fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile); | |
739 | fprintf_filtered (outfile, "\n"); | |
740 | fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n", | |
741 | psymtab->number_of_dependencies); | |
742 | for (i = 0; i < psymtab->number_of_dependencies; i++) | |
743 | { | |
744 | fprintf_filtered (outfile, " %d ", i); | |
745 | gdb_print_host_address (psymtab->dependencies[i], outfile); | |
746 | fprintf_filtered (outfile, " %s\n", | |
747 | psymtab->dependencies[i]->filename); | |
748 | } | |
749 | if (psymtab->n_global_syms > 0) | |
750 | { | |
751 | print_partial_symbols (gdbarch, | |
752 | objfile->global_psymbols.list | |
753 | + psymtab->globals_offset, | |
754 | psymtab->n_global_syms, "Global", outfile); | |
755 | } | |
756 | if (psymtab->n_static_syms > 0) | |
757 | { | |
758 | print_partial_symbols (gdbarch, | |
759 | objfile->static_psymbols.list | |
760 | + psymtab->statics_offset, | |
761 | psymtab->n_static_syms, "Static", outfile); | |
762 | } | |
763 | fprintf_filtered (outfile, "\n"); | |
764 | } | |
765 | ||
766 | static void | |
767 | print_psymtab_stats_for_objfile (struct objfile *objfile) | |
768 | { | |
769 | int i; | |
770 | struct partial_symtab *ps; | |
771 | i = 0; | |
772 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
773 | { | |
774 | if (ps->readin == 0) | |
775 | i++; | |
776 | } | |
777 | printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i); | |
778 | } | |
779 | ||
780 | static void | |
781 | dump_psymtabs_for_objfile (struct objfile *objfile) | |
782 | { | |
783 | struct partial_symtab *psymtab; | |
784 | ||
785 | if (objfile->psymtabs) | |
786 | { | |
787 | printf_filtered ("Psymtabs:\n"); | |
788 | for (psymtab = objfile->psymtabs; | |
789 | psymtab != NULL; | |
790 | psymtab = psymtab->next) | |
791 | { | |
792 | printf_filtered ("%s at ", | |
793 | psymtab->filename); | |
794 | gdb_print_host_address (psymtab, gdb_stdout); | |
795 | printf_filtered (", "); | |
796 | if (psymtab->objfile != objfile) | |
797 | { | |
798 | printf_filtered ("NOT ON CHAIN! "); | |
799 | } | |
800 | wrap_here (" "); | |
801 | } | |
802 | printf_filtered ("\n\n"); | |
803 | } | |
804 | } | |
805 | ||
806 | /* Look through the partial symtabs for all symbols which begin | |
807 | by matching FUNC_NAME. Make sure we read that symbol table in. */ | |
808 | ||
809 | static void | |
810 | read_symtabs_for_function (struct objfile *objfile, const char *func_name) | |
811 | { | |
812 | struct partial_symtab *ps; | |
813 | ||
814 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
815 | { | |
816 | if (ps->readin) | |
817 | continue; | |
818 | ||
819 | if ((lookup_partial_symbol (ps, func_name, 1, VAR_DOMAIN) | |
820 | != NULL) | |
821 | || (lookup_partial_symbol (ps, func_name, 0, VAR_DOMAIN) | |
822 | != NULL)) | |
823 | psymtab_to_symtab (ps); | |
824 | } | |
825 | } | |
826 | ||
827 | static void | |
828 | expand_partial_symbol_tables (struct objfile *objfile) | |
829 | { | |
830 | struct partial_symtab *psymtab; | |
831 | ||
832 | for (psymtab = objfile->psymtabs; | |
833 | psymtab != NULL; | |
834 | psymtab = psymtab->next) | |
835 | { | |
836 | psymtab_to_symtab (psymtab); | |
837 | } | |
838 | } | |
839 | ||
840 | static void | |
841 | read_psymtabs_with_filename (struct objfile *objfile, const char *filename) | |
842 | { | |
843 | struct partial_symtab *p; | |
844 | ||
845 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
846 | { | |
847 | if (strcmp (filename, p->filename) == 0) | |
848 | PSYMTAB_TO_SYMTAB (p); | |
849 | } | |
850 | } | |
851 | ||
852 | static void | |
853 | map_symbol_names_psymtab (struct objfile *objfile, | |
854 | void (*fun) (const char *, void *), void *data) | |
855 | { | |
856 | struct partial_symtab *ps; | |
857 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
858 | { | |
859 | struct partial_symbol **psym; | |
860 | ||
861 | /* If the psymtab's been read in we'll get it when we search | |
862 | through the blockvector. */ | |
863 | if (ps->readin) | |
864 | continue; | |
865 | ||
866 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
867 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
868 | + ps->n_global_syms); | |
869 | psym++) | |
870 | { | |
871 | /* If interrupted, then quit. */ | |
872 | QUIT; | |
873 | (*fun) (SYMBOL_NATURAL_NAME (*psym), data); | |
874 | } | |
875 | ||
876 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
877 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
878 | + ps->n_static_syms); | |
879 | psym++) | |
880 | { | |
881 | QUIT; | |
882 | (*fun) (SYMBOL_NATURAL_NAME (*psym), data); | |
883 | } | |
884 | } | |
885 | } | |
886 | ||
887 | static void | |
888 | map_symbol_filenames_psymtab (struct objfile *objfile, | |
889 | void (*fun) (const char *, const char *, | |
890 | void *), | |
891 | void *data) | |
892 | { | |
893 | struct partial_symtab *ps; | |
894 | ||
895 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
896 | { | |
897 | const char *fullname; | |
898 | ||
899 | if (ps->readin) | |
900 | continue; | |
901 | ||
902 | fullname = psymtab_to_fullname (ps); | |
903 | (*fun) (fullname, ps->filename, data); | |
904 | } | |
905 | } | |
906 | ||
907 | int find_and_open_source (const char *filename, | |
908 | const char *dirname, | |
909 | char **fullname); | |
910 | ||
911 | /* Finds the fullname that a partial_symtab represents. | |
912 | ||
913 | If this functions finds the fullname, it will save it in ps->fullname | |
914 | and it will also return the value. | |
915 | ||
916 | If this function fails to find the file that this partial_symtab represents, | |
917 | NULL will be returned and ps->fullname will be set to NULL. */ | |
918 | static char * | |
919 | psymtab_to_fullname (struct partial_symtab *ps) | |
920 | { | |
921 | int r; | |
922 | ||
923 | if (!ps) | |
924 | return NULL; | |
925 | ||
926 | /* Don't check ps->fullname here, the file could have been | |
927 | deleted/moved/..., look for it again */ | |
928 | r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname); | |
929 | ||
930 | if (r >= 0) | |
931 | { | |
932 | close (r); | |
933 | return ps->fullname; | |
934 | } | |
935 | ||
936 | return NULL; | |
937 | } | |
938 | ||
939 | static char * | |
940 | find_symbol_file_from_partial (struct objfile *objfile, const char *name) | |
941 | { | |
942 | struct partial_symtab *pst; | |
943 | ||
944 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
945 | { | |
946 | if (lookup_partial_symbol (pst, name, 1, VAR_DOMAIN)) | |
947 | return pst->filename; | |
948 | } | |
949 | return NULL; | |
950 | } | |
951 | ||
952 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. | |
953 | Check the global symbols if GLOBAL, the static symbols if not. | |
954 | Do wild-card match if WILD. */ | |
955 | ||
956 | static struct partial_symbol * | |
957 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
958 | int global, domain_enum namespace, int wild, | |
959 | int (*wild_match) (const char *, int, const char *), | |
960 | int (*is_name_suffix) (const char *)) | |
961 | { | |
962 | struct partial_symbol **start; | |
963 | int name_len = strlen (name); | |
964 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
965 | int i; | |
966 | ||
967 | if (length == 0) | |
968 | { | |
969 | return (NULL); | |
970 | } | |
971 | ||
972 | start = (global ? | |
973 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
974 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
975 | ||
976 | if (wild) | |
977 | { | |
978 | for (i = 0; i < length; i += 1) | |
979 | { | |
980 | struct partial_symbol *psym = start[i]; | |
981 | ||
982 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), | |
983 | SYMBOL_DOMAIN (psym), namespace) | |
984 | && (*wild_match) (name, name_len, SYMBOL_LINKAGE_NAME (psym))) | |
985 | return psym; | |
986 | } | |
987 | return NULL; | |
988 | } | |
989 | else | |
990 | { | |
991 | if (global) | |
992 | { | |
993 | int U; | |
994 | i = 0; | |
995 | U = length - 1; | |
996 | while (U - i > 4) | |
997 | { | |
998 | int M = (U + i) >> 1; | |
999 | struct partial_symbol *psym = start[M]; | |
1000 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
1001 | i = M + 1; | |
1002 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
1003 | U = M - 1; | |
1004 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
1005 | i = M + 1; | |
1006 | else | |
1007 | U = M; | |
1008 | } | |
1009 | } | |
1010 | else | |
1011 | i = 0; | |
1012 | ||
1013 | while (i < length) | |
1014 | { | |
1015 | struct partial_symbol *psym = start[i]; | |
1016 | ||
1017 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), | |
1018 | SYMBOL_DOMAIN (psym), namespace)) | |
1019 | { | |
1020 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
1021 | ||
1022 | if (cmp < 0) | |
1023 | { | |
1024 | if (global) | |
1025 | break; | |
1026 | } | |
1027 | else if (cmp == 0 | |
1028 | && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym) | |
1029 | + name_len)) | |
1030 | return psym; | |
1031 | } | |
1032 | i += 1; | |
1033 | } | |
1034 | ||
1035 | if (global) | |
1036 | { | |
1037 | int U; | |
1038 | i = 0; | |
1039 | U = length - 1; | |
1040 | while (U - i > 4) | |
1041 | { | |
1042 | int M = (U + i) >> 1; | |
1043 | struct partial_symbol *psym = start[M]; | |
1044 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
1045 | i = M + 1; | |
1046 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
1047 | U = M - 1; | |
1048 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
1049 | i = M + 1; | |
1050 | else | |
1051 | U = M; | |
1052 | } | |
1053 | } | |
1054 | else | |
1055 | i = 0; | |
1056 | ||
1057 | while (i < length) | |
1058 | { | |
1059 | struct partial_symbol *psym = start[i]; | |
1060 | ||
1061 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), | |
1062 | SYMBOL_DOMAIN (psym), namespace)) | |
1063 | { | |
1064 | int cmp; | |
1065 | ||
1066 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; | |
1067 | if (cmp == 0) | |
1068 | { | |
1069 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
1070 | if (cmp == 0) | |
1071 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
1072 | name_len); | |
1073 | } | |
1074 | ||
1075 | if (cmp < 0) | |
1076 | { | |
1077 | if (global) | |
1078 | break; | |
1079 | } | |
1080 | else if (cmp == 0 | |
1081 | && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym) | |
1082 | + name_len + 5)) | |
1083 | return psym; | |
1084 | } | |
1085 | i += 1; | |
1086 | } | |
1087 | } | |
1088 | return NULL; | |
1089 | } | |
1090 | ||
1091 | static void | |
1092 | map_ada_symtabs (struct objfile *objfile, | |
1093 | int (*wild_match) (const char *, int, const char *), | |
1094 | int (*is_name_suffix) (const char *), | |
1095 | void (*callback) (struct objfile *, struct symtab *, void *), | |
1096 | const char *name, int global, domain_enum namespace, int wild, | |
1097 | void *data) | |
1098 | { | |
1099 | struct partial_symtab *ps; | |
1100 | ||
1101 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
1102 | { | |
1103 | QUIT; | |
1104 | if (ps->readin | |
1105 | || ada_lookup_partial_symbol (ps, name, global, namespace, wild, | |
1106 | wild_match, is_name_suffix)) | |
1107 | { | |
1108 | struct symtab *s = PSYMTAB_TO_SYMTAB (ps); | |
1109 | if (s == NULL || !s->primary) | |
1110 | continue; | |
1111 | (*callback) (objfile, s, data); | |
1112 | } | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | static void | |
1117 | expand_symtabs_matching_via_partial (struct objfile *objfile, | |
1118 | int (*file_matcher) (const char *, void *), | |
1119 | int (*name_matcher) (const char *, void *), | |
1120 | domain_enum kind, | |
1121 | void *data) | |
1122 | { | |
1123 | struct partial_symtab *ps; | |
1124 | ||
1125 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
1126 | { | |
1127 | struct partial_symbol **psym; | |
1128 | struct partial_symbol **bound, **gbound, **sbound; | |
1129 | int keep_going = 1; | |
1130 | ||
1131 | if (ps->readin) | |
1132 | continue; | |
1133 | ||
1134 | if (! (*file_matcher) (ps->filename, data)) | |
1135 | continue; | |
1136 | ||
1137 | gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; | |
1138 | sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; | |
1139 | bound = gbound; | |
1140 | ||
1141 | /* Go through all of the symbols stored in a partial | |
1142 | symtab in one loop. */ | |
1143 | psym = objfile->global_psymbols.list + ps->globals_offset; | |
1144 | while (keep_going) | |
1145 | { | |
1146 | if (psym >= bound) | |
1147 | { | |
1148 | if (bound == gbound && ps->n_static_syms != 0) | |
1149 | { | |
1150 | psym = objfile->static_psymbols.list + ps->statics_offset; | |
1151 | bound = sbound; | |
1152 | } | |
1153 | else | |
1154 | keep_going = 0; | |
1155 | continue; | |
1156 | } | |
1157 | else | |
1158 | { | |
1159 | QUIT; | |
1160 | ||
1161 | if ((*name_matcher) (SYMBOL_NATURAL_NAME (*psym), data) | |
1162 | && ((kind == VARIABLES_DOMAIN | |
1163 | && SYMBOL_CLASS (*psym) != LOC_TYPEDEF | |
1164 | && SYMBOL_CLASS (*psym) != LOC_BLOCK) | |
1165 | || (kind == FUNCTIONS_DOMAIN | |
1166 | && SYMBOL_CLASS (*psym) == LOC_BLOCK) | |
1167 | || (kind == TYPES_DOMAIN | |
1168 | && SYMBOL_CLASS (*psym) == LOC_TYPEDEF))) | |
1169 | { | |
1170 | PSYMTAB_TO_SYMTAB (ps); | |
1171 | keep_going = 0; | |
1172 | } | |
1173 | } | |
1174 | psym++; | |
1175 | } | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | static int | |
1180 | objfile_has_psyms (struct objfile *objfile) | |
1181 | { | |
1182 | return objfile->psymtabs != NULL; | |
1183 | } | |
1184 | ||
1185 | const struct quick_symbol_functions psym_functions = | |
1186 | { | |
1187 | objfile_has_psyms, | |
1188 | find_last_source_symtab_from_partial, | |
1189 | forget_cached_source_info_partial, | |
1190 | lookup_symtab_via_partial_symtab, | |
1191 | lookup_symbol_aux_psymtabs, | |
1192 | print_psymtab_stats_for_objfile, | |
1193 | dump_psymtabs_for_objfile, | |
1194 | relocate_psymtabs, | |
1195 | read_symtabs_for_function, | |
1196 | expand_partial_symbol_tables, | |
1197 | read_psymtabs_with_filename, | |
1198 | find_symbol_file_from_partial, | |
1199 | map_ada_symtabs, | |
1200 | expand_symtabs_matching_via_partial, | |
1201 | find_pc_sect_symtab_from_partial, | |
1202 | map_symbol_names_psymtab, | |
1203 | map_symbol_filenames_psymtab | |
1204 | }; | |
1205 | ||
1206 | \f | |
1207 | ||
1208 | /* This compares two partial symbols by names, using strcmp_iw_ordered | |
1209 | for the comparison. */ | |
1210 | ||
1211 | static int | |
1212 | compare_psymbols (const void *s1p, const void *s2p) | |
1213 | { | |
1214 | struct partial_symbol *const *s1 = s1p; | |
1215 | struct partial_symbol *const *s2 = s2p; | |
1216 | ||
1217 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), | |
1218 | SYMBOL_SEARCH_NAME (*s2)); | |
1219 | } | |
1220 | ||
1221 | void | |
1222 | sort_pst_symbols (struct partial_symtab *pst) | |
1223 | { | |
1224 | /* Sort the global list; don't sort the static list */ | |
1225 | ||
1226 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, | |
1227 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
1228 | compare_psymbols); | |
1229 | } | |
1230 | ||
1231 | /* Allocate and partially fill a partial symtab. It will be | |
1232 | completely filled at the end of the symbol list. | |
1233 | ||
1234 | FILENAME is the name of the symbol-file we are reading from. */ | |
1235 | ||
1236 | struct partial_symtab * | |
1237 | start_psymtab_common (struct objfile *objfile, | |
1238 | struct section_offsets *section_offsets, | |
1239 | const char *filename, | |
1240 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
1241 | struct partial_symbol **static_syms) | |
1242 | { | |
1243 | struct partial_symtab *psymtab; | |
1244 | ||
1245 | psymtab = allocate_psymtab (filename, objfile); | |
1246 | psymtab->section_offsets = section_offsets; | |
1247 | psymtab->textlow = textlow; | |
1248 | psymtab->texthigh = psymtab->textlow; /* default */ | |
1249 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
1250 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
1251 | return (psymtab); | |
1252 | } | |
1253 | ||
1254 | /* Helper function, initialises partial symbol structure and stashes | |
1255 | it into objfile's bcache. Note that our caching mechanism will | |
1256 | use all fields of struct partial_symbol to determine hash value of the | |
1257 | structure. In other words, having two symbols with the same name but | |
1258 | different domain (or address) is possible and correct. */ | |
1259 | ||
1260 | static const struct partial_symbol * | |
1261 | add_psymbol_to_bcache (char *name, int namelength, int copy_name, | |
1262 | domain_enum domain, | |
1263 | enum address_class class, | |
1264 | long val, /* Value as a long */ | |
1265 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
1266 | enum language language, struct objfile *objfile, | |
1267 | int *added) | |
1268 | { | |
1269 | /* psymbol is static so that there will be no uninitialized gaps in the | |
1270 | structure which might contain random data, causing cache misses in | |
1271 | bcache. */ | |
1272 | static struct partial_symbol psymbol; | |
1273 | ||
1274 | /* However, we must ensure that the entire 'value' field has been | |
1275 | zeroed before assigning to it, because an assignment may not | |
1276 | write the entire field. */ | |
1277 | memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value)); | |
1278 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
1279 | if (val != 0) | |
1280 | { | |
1281 | SYMBOL_VALUE (&psymbol) = val; | |
1282 | } | |
1283 | else | |
1284 | { | |
1285 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
1286 | } | |
1287 | SYMBOL_SECTION (&psymbol) = 0; | |
1288 | SYMBOL_LANGUAGE (&psymbol) = language; | |
1289 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
1290 | PSYMBOL_CLASS (&psymbol) = class; | |
1291 | ||
1292 | SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile); | |
1293 | ||
1294 | /* Stash the partial symbol away in the cache */ | |
1295 | return bcache_full (&psymbol, sizeof (struct partial_symbol), | |
1296 | objfile->psymbol_cache, added); | |
1297 | } | |
1298 | ||
1299 | /* Helper function, adds partial symbol to the given partial symbol | |
1300 | list. */ | |
1301 | ||
1302 | static void | |
1303 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
1304 | const struct partial_symbol *psym, | |
1305 | struct objfile *objfile) | |
1306 | { | |
1307 | if (list->next >= list->list + list->size) | |
1308 | extend_psymbol_list (list, objfile); | |
1309 | *list->next++ = (struct partial_symbol *) psym; | |
1310 | OBJSTAT (objfile, n_psyms++); | |
1311 | } | |
1312 | ||
1313 | /* Add a symbol with a long value to a psymtab. | |
1314 | Since one arg is a struct, we pass in a ptr and deref it (sigh). | |
1315 | Return the partial symbol that has been added. */ | |
1316 | ||
1317 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
1318 | symbol is so that callers can get access to the symbol's demangled | |
1319 | name, which they don't have any cheap way to determine otherwise. | |
1320 | (Currenly, dwarf2read.c is the only file who uses that information, | |
1321 | though it's possible that other readers might in the future.) | |
1322 | Elena wasn't thrilled about that, and I don't blame her, but we | |
1323 | couldn't come up with a better way to get that information. If | |
1324 | it's needed in other situations, we could consider breaking up | |
1325 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
1326 | cache. */ | |
1327 | ||
1328 | const struct partial_symbol * | |
1329 | add_psymbol_to_list (char *name, int namelength, int copy_name, | |
1330 | domain_enum domain, | |
1331 | enum address_class class, | |
1332 | struct psymbol_allocation_list *list, | |
1333 | long val, /* Value as a long */ | |
1334 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
1335 | enum language language, struct objfile *objfile) | |
1336 | { | |
1337 | const struct partial_symbol *psym; | |
1338 | ||
1339 | int added; | |
1340 | ||
1341 | /* Stash the partial symbol away in the cache */ | |
1342 | psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class, | |
1343 | val, coreaddr, language, objfile, &added); | |
1344 | ||
1345 | /* Do not duplicate global partial symbols. */ | |
1346 | if (list == &objfile->global_psymbols | |
1347 | && !added) | |
1348 | return psym; | |
1349 | ||
1350 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
1351 | append_psymbol_to_list (list, psym, objfile); | |
1352 | return psym; | |
1353 | } | |
1354 | ||
1355 | /* Initialize storage for partial symbols. */ | |
1356 | ||
1357 | void | |
1358 | init_psymbol_list (struct objfile *objfile, int total_symbols) | |
1359 | { | |
1360 | /* Free any previously allocated psymbol lists. */ | |
1361 | ||
1362 | if (objfile->global_psymbols.list) | |
1363 | { | |
1364 | xfree (objfile->global_psymbols.list); | |
1365 | } | |
1366 | if (objfile->static_psymbols.list) | |
1367 | { | |
1368 | xfree (objfile->static_psymbols.list); | |
1369 | } | |
1370 | ||
1371 | /* Current best guess is that approximately a twentieth | |
1372 | of the total symbols (in a debugging file) are global or static | |
1373 | oriented symbols */ | |
1374 | ||
1375 | objfile->global_psymbols.size = total_symbols / 10; | |
1376 | objfile->static_psymbols.size = total_symbols / 10; | |
1377 | ||
1378 | if (objfile->global_psymbols.size > 0) | |
1379 | { | |
1380 | objfile->global_psymbols.next = | |
1381 | objfile->global_psymbols.list = (struct partial_symbol **) | |
1382 | xmalloc ((objfile->global_psymbols.size | |
1383 | * sizeof (struct partial_symbol *))); | |
1384 | } | |
1385 | if (objfile->static_psymbols.size > 0) | |
1386 | { | |
1387 | objfile->static_psymbols.next = | |
1388 | objfile->static_psymbols.list = (struct partial_symbol **) | |
1389 | xmalloc ((objfile->static_psymbols.size | |
1390 | * sizeof (struct partial_symbol *))); | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | struct partial_symtab * | |
1395 | allocate_psymtab (const char *filename, struct objfile *objfile) | |
1396 | { | |
1397 | struct partial_symtab *psymtab; | |
1398 | ||
1399 | if (objfile->free_psymtabs) | |
1400 | { | |
1401 | psymtab = objfile->free_psymtabs; | |
1402 | objfile->free_psymtabs = psymtab->next; | |
1403 | } | |
1404 | else | |
1405 | psymtab = (struct partial_symtab *) | |
1406 | obstack_alloc (&objfile->objfile_obstack, | |
1407 | sizeof (struct partial_symtab)); | |
1408 | ||
1409 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
1410 | psymtab->filename = obsavestring (filename, strlen (filename), | |
1411 | &objfile->objfile_obstack); | |
1412 | psymtab->symtab = NULL; | |
1413 | ||
1414 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
1415 | Psymtabs are searched in most recent inserted -> least recent | |
1416 | inserted order. */ | |
1417 | ||
1418 | psymtab->objfile = objfile; | |
1419 | psymtab->next = objfile->psymtabs; | |
1420 | objfile->psymtabs = psymtab; | |
ccefe4c4 TT |
1421 | |
1422 | return (psymtab); | |
1423 | } | |
1424 | ||
1425 | void | |
1426 | discard_psymtab (struct partial_symtab *pst) | |
1427 | { | |
1428 | struct partial_symtab **prev_pst; | |
1429 | ||
1430 | /* From dbxread.c: | |
1431 | Empty psymtabs happen as a result of header files which don't | |
1432 | have any symbols in them. There can be a lot of them. But this | |
1433 | check is wrong, in that a psymtab with N_SLINE entries but | |
1434 | nothing else is not empty, but we don't realize that. Fixing | |
1435 | that without slowing things down might be tricky. */ | |
1436 | ||
1437 | /* First, snip it out of the psymtab chain */ | |
1438 | ||
1439 | prev_pst = &(pst->objfile->psymtabs); | |
1440 | while ((*prev_pst) != pst) | |
1441 | prev_pst = &((*prev_pst)->next); | |
1442 | (*prev_pst) = pst->next; | |
1443 | ||
1444 | /* Next, put it on a free list for recycling */ | |
1445 | ||
1446 | pst->next = pst->objfile->free_psymtabs; | |
1447 | pst->objfile->free_psymtabs = pst; | |
1448 | } | |
1449 | ||
1450 | /* Increase the space allocated for LISTP, which is probably | |
1451 | global_psymbols or static_psymbols. This space will eventually | |
1452 | be freed in free_objfile(). */ | |
1453 | ||
1454 | void | |
1455 | extend_psymbol_list (struct psymbol_allocation_list *listp, | |
1456 | struct objfile *objfile) | |
1457 | { | |
1458 | int new_size; | |
1459 | if (listp->size == 0) | |
1460 | { | |
1461 | new_size = 255; | |
1462 | listp->list = (struct partial_symbol **) | |
1463 | xmalloc (new_size * sizeof (struct partial_symbol *)); | |
1464 | } | |
1465 | else | |
1466 | { | |
1467 | new_size = listp->size * 2; | |
1468 | listp->list = (struct partial_symbol **) | |
1469 | xrealloc ((char *) listp->list, | |
1470 | new_size * sizeof (struct partial_symbol *)); | |
1471 | } | |
1472 | /* Next assumes we only went one over. Should be good if | |
1473 | program works correctly */ | |
1474 | listp->next = listp->list + listp->size; | |
1475 | listp->size = new_size; | |
1476 | } | |
1477 | ||
1478 | \f | |
1479 | ||
1480 | void | |
1481 | maintenance_print_psymbols (char *args, int from_tty) | |
1482 | { | |
1483 | char **argv; | |
1484 | struct ui_file *outfile; | |
1485 | struct cleanup *cleanups; | |
1486 | char *symname = NULL; | |
1487 | char *filename = DEV_TTY; | |
1488 | struct objfile *objfile; | |
1489 | struct partial_symtab *ps; | |
1490 | ||
1491 | dont_repeat (); | |
1492 | ||
1493 | if (args == NULL) | |
1494 | { | |
1495 | error (_("print-psymbols takes an output file name and optional symbol file name")); | |
1496 | } | |
1497 | argv = gdb_buildargv (args); | |
1498 | cleanups = make_cleanup_freeargv (argv); | |
1499 | ||
1500 | if (argv[0] != NULL) | |
1501 | { | |
1502 | filename = argv[0]; | |
1503 | /* If a second arg is supplied, it is a source file name to match on */ | |
1504 | if (argv[1] != NULL) | |
1505 | { | |
1506 | symname = argv[1]; | |
1507 | } | |
1508 | } | |
1509 | ||
1510 | filename = tilde_expand (filename); | |
1511 | make_cleanup (xfree, filename); | |
1512 | ||
1513 | outfile = gdb_fopen (filename, FOPEN_WT); | |
1514 | if (outfile == 0) | |
1515 | perror_with_name (filename); | |
1516 | make_cleanup_ui_file_delete (outfile); | |
1517 | ||
1518 | immediate_quit++; | |
1519 | ALL_PSYMTABS (objfile, ps) | |
1520 | if (symname == NULL || strcmp (symname, ps->filename) == 0) | |
1521 | dump_psymtab (objfile, ps, outfile); | |
1522 | immediate_quit--; | |
1523 | do_cleanups (cleanups); | |
1524 | } | |
1525 | ||
1526 | /* List all the partial symbol tables whose names match REGEXP (optional). */ | |
1527 | void | |
1528 | maintenance_info_psymtabs (char *regexp, int from_tty) | |
1529 | { | |
1530 | struct program_space *pspace; | |
1531 | struct objfile *objfile; | |
1532 | ||
1533 | if (regexp) | |
1534 | re_comp (regexp); | |
1535 | ||
1536 | ALL_PSPACES (pspace) | |
1537 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
1538 | { | |
1539 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1540 | struct partial_symtab *psymtab; | |
1541 | ||
1542 | /* We don't want to print anything for this objfile until we | |
1543 | actually find a symtab whose name matches. */ | |
1544 | int printed_objfile_start = 0; | |
1545 | ||
1546 | ALL_OBJFILE_PSYMTABS (objfile, psymtab) | |
1547 | { | |
1548 | QUIT; | |
1549 | ||
1550 | if (! regexp | |
1551 | || re_exec (psymtab->filename)) | |
1552 | { | |
1553 | if (! printed_objfile_start) | |
1554 | { | |
1555 | printf_filtered ("{ objfile %s ", objfile->name); | |
1556 | wrap_here (" "); | |
1557 | printf_filtered ("((struct objfile *) %s)\n", | |
1558 | host_address_to_string (objfile)); | |
1559 | printed_objfile_start = 1; | |
1560 | } | |
1561 | ||
1562 | printf_filtered (" { psymtab %s ", psymtab->filename); | |
1563 | wrap_here (" "); | |
1564 | printf_filtered ("((struct partial_symtab *) %s)\n", | |
1565 | host_address_to_string (psymtab)); | |
1566 | ||
1567 | printf_filtered (" readin %s\n", | |
1568 | psymtab->readin ? "yes" : "no"); | |
1569 | printf_filtered (" fullname %s\n", | |
1570 | psymtab->fullname ? psymtab->fullname : "(null)"); | |
1571 | printf_filtered (" text addresses "); | |
1572 | fputs_filtered (paddress (gdbarch, psymtab->textlow), | |
1573 | gdb_stdout); | |
1574 | printf_filtered (" -- "); | |
1575 | fputs_filtered (paddress (gdbarch, psymtab->texthigh), | |
1576 | gdb_stdout); | |
1577 | printf_filtered ("\n"); | |
1578 | printf_filtered (" globals "); | |
1579 | if (psymtab->n_global_syms) | |
1580 | { | |
1581 | printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n", | |
1582 | host_address_to_string (psymtab->objfile->global_psymbols.list | |
1583 | + psymtab->globals_offset), | |
1584 | psymtab->n_global_syms); | |
1585 | } | |
1586 | else | |
1587 | printf_filtered ("(none)\n"); | |
1588 | printf_filtered (" statics "); | |
1589 | if (psymtab->n_static_syms) | |
1590 | { | |
1591 | printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n", | |
1592 | host_address_to_string (psymtab->objfile->static_psymbols.list | |
1593 | + psymtab->statics_offset), | |
1594 | psymtab->n_static_syms); | |
1595 | } | |
1596 | else | |
1597 | printf_filtered ("(none)\n"); | |
1598 | printf_filtered (" dependencies "); | |
1599 | if (psymtab->number_of_dependencies) | |
1600 | { | |
1601 | int i; | |
1602 | ||
1603 | printf_filtered ("{\n"); | |
1604 | for (i = 0; i < psymtab->number_of_dependencies; i++) | |
1605 | { | |
1606 | struct partial_symtab *dep = psymtab->dependencies[i]; | |
1607 | ||
1608 | /* Note the string concatenation there --- no comma. */ | |
1609 | printf_filtered (" psymtab %s " | |
1610 | "((struct partial_symtab *) %s)\n", | |
1611 | dep->filename, | |
1612 | host_address_to_string (dep)); | |
1613 | } | |
1614 | printf_filtered (" }\n"); | |
1615 | } | |
1616 | else | |
1617 | printf_filtered ("(none)\n"); | |
1618 | printf_filtered (" }\n"); | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | if (printed_objfile_start) | |
1623 | printf_filtered ("}\n"); | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | /* Check consistency of psymtabs and symtabs. */ | |
1628 | ||
1629 | void | |
1630 | maintenance_check_symtabs (char *ignore, int from_tty) | |
1631 | { | |
1632 | struct symbol *sym; | |
1633 | struct partial_symbol **psym; | |
1634 | struct symtab *s = NULL; | |
1635 | struct partial_symtab *ps; | |
1636 | struct blockvector *bv; | |
1637 | struct objfile *objfile; | |
1638 | struct block *b; | |
1639 | int length; | |
1640 | ||
1641 | ALL_PSYMTABS (objfile, ps) | |
1642 | { | |
1643 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1644 | s = PSYMTAB_TO_SYMTAB (ps); | |
1645 | if (s == NULL) | |
1646 | continue; | |
1647 | bv = BLOCKVECTOR (s); | |
1648 | b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1649 | psym = ps->objfile->static_psymbols.list + ps->statics_offset; | |
1650 | length = ps->n_static_syms; | |
1651 | while (length--) | |
1652 | { | |
1653 | sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym), | |
1654 | SYMBOL_DOMAIN (*psym)); | |
1655 | if (!sym) | |
1656 | { | |
1657 | printf_filtered ("Static symbol `"); | |
1658 | puts_filtered (SYMBOL_LINKAGE_NAME (*psym)); | |
1659 | printf_filtered ("' only found in "); | |
1660 | puts_filtered (ps->filename); | |
1661 | printf_filtered (" psymtab\n"); | |
1662 | } | |
1663 | psym++; | |
1664 | } | |
1665 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1666 | psym = ps->objfile->global_psymbols.list + ps->globals_offset; | |
1667 | length = ps->n_global_syms; | |
1668 | while (length--) | |
1669 | { | |
1670 | sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym), | |
1671 | SYMBOL_DOMAIN (*psym)); | |
1672 | if (!sym) | |
1673 | { | |
1674 | printf_filtered ("Global symbol `"); | |
1675 | puts_filtered (SYMBOL_LINKAGE_NAME (*psym)); | |
1676 | printf_filtered ("' only found in "); | |
1677 | puts_filtered (ps->filename); | |
1678 | printf_filtered (" psymtab\n"); | |
1679 | } | |
1680 | psym++; | |
1681 | } | |
1682 | if (ps->texthigh < ps->textlow) | |
1683 | { | |
1684 | printf_filtered ("Psymtab "); | |
1685 | puts_filtered (ps->filename); | |
1686 | printf_filtered (" covers bad range "); | |
1687 | fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout); | |
1688 | printf_filtered (" - "); | |
1689 | fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout); | |
1690 | printf_filtered ("\n"); | |
1691 | continue; | |
1692 | } | |
1693 | if (ps->texthigh == 0) | |
1694 | continue; | |
1695 | if (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)) | |
1696 | { | |
1697 | printf_filtered ("Psymtab "); | |
1698 | puts_filtered (ps->filename); | |
1699 | printf_filtered (" covers "); | |
1700 | fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout); | |
1701 | printf_filtered (" - "); | |
1702 | fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout); | |
1703 | printf_filtered (" but symtab covers only "); | |
1704 | fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout); | |
1705 | printf_filtered (" - "); | |
1706 | fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout); | |
1707 | printf_filtered ("\n"); | |
1708 | } | |
1709 | } | |
1710 | } | |
1711 | ||
1712 | \f | |
1713 | ||
1714 | void | |
1715 | map_partial_symbol_names (void (*fun) (const char *, void *), void *data) | |
1716 | { | |
1717 | struct objfile *objfile; | |
1718 | ||
1719 | ALL_OBJFILES (objfile) | |
1720 | { | |
1721 | if (objfile->sf) | |
1722 | objfile->sf->qf->map_symbol_names (objfile, fun, data); | |
1723 | } | |
1724 | } | |
1725 | ||
1726 | void | |
1727 | map_partial_symbol_filenames (void (*fun) (const char *, const char *, | |
1728 | void *), | |
1729 | void *data) | |
1730 | { | |
1731 | struct objfile *objfile; | |
1732 | ||
1733 | ALL_OBJFILES (objfile) | |
1734 | { | |
1735 | if (objfile->sf) | |
1736 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data); | |
1737 | } | |
1738 | } |