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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 | { | |
430 | struct partial_symbol *temp; | |
431 | struct partial_symbol **start, **psym; | |
432 | struct partial_symbol **top, **real_top, **bottom, **center; | |
433 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
434 | int do_linear_search = 1; | |
435 | ||
436 | if (length == 0) | |
437 | { | |
438 | return (NULL); | |
439 | } | |
440 | start = (global ? | |
441 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
442 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
443 | ||
444 | if (global) /* This means we can use a binary search. */ | |
445 | { | |
446 | do_linear_search = 0; | |
447 | ||
448 | /* Binary search. This search is guaranteed to end with center | |
449 | pointing at the earliest partial symbol whose name might be | |
450 | correct. At that point *all* partial symbols with an | |
451 | appropriate name will be checked against the correct | |
452 | domain. */ | |
453 | ||
454 | bottom = start; | |
455 | top = start + length - 1; | |
456 | real_top = top; | |
457 | while (top > bottom) | |
458 | { | |
459 | center = bottom + (top - bottom) / 2; | |
460 | if (!(center < top)) | |
461 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); | |
462 | if (!do_linear_search | |
463 | && (SYMBOL_LANGUAGE (*center) == language_java)) | |
464 | { | |
465 | do_linear_search = 1; | |
466 | } | |
467 | if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0) | |
468 | { | |
469 | top = center; | |
470 | } | |
471 | else | |
472 | { | |
473 | bottom = center + 1; | |
474 | } | |
475 | } | |
476 | if (!(top == bottom)) | |
477 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); | |
478 | ||
479 | while (top <= real_top | |
480 | && SYMBOL_MATCHES_SEARCH_NAME (*top, name)) | |
481 | { | |
482 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*top), | |
483 | SYMBOL_DOMAIN (*top), domain)) | |
484 | return (*top); | |
485 | top++; | |
486 | } | |
487 | } | |
488 | ||
489 | /* Can't use a binary search or else we found during the binary search that | |
490 | we should also do a linear search. */ | |
491 | ||
492 | if (do_linear_search) | |
493 | { | |
494 | for (psym = start; psym < start + length; psym++) | |
495 | { | |
496 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym), | |
497 | SYMBOL_DOMAIN (*psym), domain) | |
498 | && SYMBOL_MATCHES_SEARCH_NAME (*psym, name)) | |
499 | return (*psym); | |
500 | } | |
501 | } | |
502 | ||
503 | return (NULL); | |
504 | } | |
505 | ||
506 | /* Get the symbol table that corresponds to a partial_symtab. | |
507 | This is fast after the first time you do it. In fact, there | |
508 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
509 | case inline. */ | |
510 | ||
511 | static struct symtab * | |
512 | psymtab_to_symtab (struct partial_symtab *pst) | |
513 | { | |
514 | /* If it's been looked up before, return it. */ | |
515 | if (pst->symtab) | |
516 | return pst->symtab; | |
517 | ||
518 | /* If it has not yet been read in, read it. */ | |
519 | if (!pst->readin) | |
520 | { | |
521 | struct cleanup *back_to = increment_reading_symtab (); | |
522 | (*pst->read_symtab) (pst); | |
523 | do_cleanups (back_to); | |
524 | } | |
525 | ||
526 | return pst->symtab; | |
527 | } | |
528 | ||
529 | static void | |
530 | relocate_psymtabs (struct objfile *objfile, | |
531 | struct section_offsets *new_offsets, | |
532 | struct section_offsets *delta) | |
533 | { | |
534 | struct partial_symbol **psym; | |
535 | struct partial_symtab *p; | |
536 | ||
537 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
538 | { | |
539 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
540 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
541 | } | |
542 | ||
543 | for (psym = objfile->global_psymbols.list; | |
544 | psym < objfile->global_psymbols.next; | |
545 | psym++) | |
546 | { | |
547 | fixup_psymbol_section (*psym, objfile); | |
548 | if (SYMBOL_SECTION (*psym) >= 0) | |
549 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
550 | SYMBOL_SECTION (*psym)); | |
551 | } | |
552 | for (psym = objfile->static_psymbols.list; | |
553 | psym < objfile->static_psymbols.next; | |
554 | psym++) | |
555 | { | |
556 | fixup_psymbol_section (*psym, objfile); | |
557 | if (SYMBOL_SECTION (*psym) >= 0) | |
558 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
559 | SYMBOL_SECTION (*psym)); | |
560 | } | |
561 | } | |
562 | ||
563 | static struct symtab * | |
564 | find_last_source_symtab_from_partial (struct objfile *ofp) | |
565 | { | |
566 | struct symtab *result; | |
567 | struct partial_symtab *ps; | |
568 | struct partial_symtab *cs_pst = 0; | |
569 | ||
570 | ALL_OBJFILE_PSYMTABS (ofp, ps) | |
571 | { | |
572 | const char *name = ps->filename; | |
573 | int len = strlen (name); | |
574 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
575 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
576 | cs_pst = ps; | |
577 | } | |
578 | ||
579 | if (cs_pst) | |
580 | { | |
581 | if (cs_pst->readin) | |
582 | { | |
583 | internal_error (__FILE__, __LINE__, | |
584 | _("select_source_symtab: " | |
585 | "readin pst found and no symtabs.")); | |
586 | } | |
587 | else | |
588 | return PSYMTAB_TO_SYMTAB (cs_pst); | |
589 | } | |
590 | return NULL; | |
591 | } | |
592 | ||
593 | static void | |
594 | forget_cached_source_info_partial (struct objfile *objfile) | |
595 | { | |
596 | struct partial_symtab *pst; | |
597 | ||
598 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
599 | { | |
600 | if (pst->fullname != NULL) | |
601 | { | |
602 | xfree (pst->fullname); | |
603 | pst->fullname = NULL; | |
604 | } | |
605 | } | |
606 | } | |
607 | ||
608 | static void | |
609 | print_partial_symbols (struct gdbarch *gdbarch, | |
610 | struct partial_symbol **p, int count, char *what, | |
611 | struct ui_file *outfile) | |
612 | { | |
613 | fprintf_filtered (outfile, " %s partial symbols:\n", what); | |
614 | while (count-- > 0) | |
615 | { | |
616 | fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p)); | |
617 | if (SYMBOL_DEMANGLED_NAME (*p) != NULL) | |
618 | { | |
619 | fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p)); | |
620 | } | |
621 | fputs_filtered (", ", outfile); | |
622 | switch (SYMBOL_DOMAIN (*p)) | |
623 | { | |
624 | case UNDEF_DOMAIN: | |
625 | fputs_filtered ("undefined domain, ", outfile); | |
626 | break; | |
627 | case VAR_DOMAIN: | |
628 | /* This is the usual thing -- don't print it */ | |
629 | break; | |
630 | case STRUCT_DOMAIN: | |
631 | fputs_filtered ("struct domain, ", outfile); | |
632 | break; | |
633 | case LABEL_DOMAIN: | |
634 | fputs_filtered ("label domain, ", outfile); | |
635 | break; | |
636 | default: | |
637 | fputs_filtered ("<invalid domain>, ", outfile); | |
638 | break; | |
639 | } | |
640 | switch (SYMBOL_CLASS (*p)) | |
641 | { | |
642 | case LOC_UNDEF: | |
643 | fputs_filtered ("undefined", outfile); | |
644 | break; | |
645 | case LOC_CONST: | |
646 | fputs_filtered ("constant int", outfile); | |
647 | break; | |
648 | case LOC_STATIC: | |
649 | fputs_filtered ("static", outfile); | |
650 | break; | |
651 | case LOC_REGISTER: | |
652 | fputs_filtered ("register", outfile); | |
653 | break; | |
654 | case LOC_ARG: | |
655 | fputs_filtered ("pass by value", outfile); | |
656 | break; | |
657 | case LOC_REF_ARG: | |
658 | fputs_filtered ("pass by reference", outfile); | |
659 | break; | |
660 | case LOC_REGPARM_ADDR: | |
661 | fputs_filtered ("register address parameter", outfile); | |
662 | break; | |
663 | case LOC_LOCAL: | |
664 | fputs_filtered ("stack parameter", outfile); | |
665 | break; | |
666 | case LOC_TYPEDEF: | |
667 | fputs_filtered ("type", outfile); | |
668 | break; | |
669 | case LOC_LABEL: | |
670 | fputs_filtered ("label", outfile); | |
671 | break; | |
672 | case LOC_BLOCK: | |
673 | fputs_filtered ("function", outfile); | |
674 | break; | |
675 | case LOC_CONST_BYTES: | |
676 | fputs_filtered ("constant bytes", outfile); | |
677 | break; | |
678 | case LOC_UNRESOLVED: | |
679 | fputs_filtered ("unresolved", outfile); | |
680 | break; | |
681 | case LOC_OPTIMIZED_OUT: | |
682 | fputs_filtered ("optimized out", outfile); | |
683 | break; | |
684 | case LOC_COMPUTED: | |
685 | fputs_filtered ("computed at runtime", outfile); | |
686 | break; | |
687 | default: | |
688 | fputs_filtered ("<invalid location>", outfile); | |
689 | break; | |
690 | } | |
691 | fputs_filtered (", ", outfile); | |
692 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile); | |
693 | fprintf_filtered (outfile, "\n"); | |
694 | p++; | |
695 | } | |
696 | } | |
697 | ||
698 | static void | |
699 | dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab, | |
700 | struct ui_file *outfile) | |
701 | { | |
702 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
703 | int i; | |
704 | ||
705 | fprintf_filtered (outfile, "\nPartial symtab for source file %s ", | |
706 | psymtab->filename); | |
707 | fprintf_filtered (outfile, "(object "); | |
708 | gdb_print_host_address (psymtab, outfile); | |
709 | fprintf_filtered (outfile, ")\n\n"); | |
710 | fprintf_unfiltered (outfile, " Read from object file %s (", | |
711 | objfile->name); | |
712 | gdb_print_host_address (objfile, outfile); | |
713 | fprintf_unfiltered (outfile, ")\n"); | |
714 | ||
715 | if (psymtab->readin) | |
716 | { | |
717 | fprintf_filtered (outfile, | |
718 | " Full symtab was read (at "); | |
719 | gdb_print_host_address (psymtab->symtab, outfile); | |
720 | fprintf_filtered (outfile, " by function at "); | |
721 | gdb_print_host_address (psymtab->read_symtab, outfile); | |
722 | fprintf_filtered (outfile, ")\n"); | |
723 | } | |
724 | ||
725 | fprintf_filtered (outfile, " Relocate symbols by "); | |
726 | for (i = 0; i < psymtab->objfile->num_sections; ++i) | |
727 | { | |
728 | if (i != 0) | |
729 | fprintf_filtered (outfile, ", "); | |
730 | wrap_here (" "); | |
731 | fputs_filtered (paddress (gdbarch, | |
732 | ANOFFSET (psymtab->section_offsets, i)), | |
733 | outfile); | |
734 | } | |
735 | fprintf_filtered (outfile, "\n"); | |
736 | ||
737 | fprintf_filtered (outfile, " Symbols cover text addresses "); | |
738 | fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile); | |
739 | fprintf_filtered (outfile, "-"); | |
740 | fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile); | |
741 | fprintf_filtered (outfile, "\n"); | |
742 | fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n", | |
743 | psymtab->number_of_dependencies); | |
744 | for (i = 0; i < psymtab->number_of_dependencies; i++) | |
745 | { | |
746 | fprintf_filtered (outfile, " %d ", i); | |
747 | gdb_print_host_address (psymtab->dependencies[i], outfile); | |
748 | fprintf_filtered (outfile, " %s\n", | |
749 | psymtab->dependencies[i]->filename); | |
750 | } | |
751 | if (psymtab->n_global_syms > 0) | |
752 | { | |
753 | print_partial_symbols (gdbarch, | |
754 | objfile->global_psymbols.list | |
755 | + psymtab->globals_offset, | |
756 | psymtab->n_global_syms, "Global", outfile); | |
757 | } | |
758 | if (psymtab->n_static_syms > 0) | |
759 | { | |
760 | print_partial_symbols (gdbarch, | |
761 | objfile->static_psymbols.list | |
762 | + psymtab->statics_offset, | |
763 | psymtab->n_static_syms, "Static", outfile); | |
764 | } | |
765 | fprintf_filtered (outfile, "\n"); | |
766 | } | |
767 | ||
768 | static void | |
769 | print_psymtab_stats_for_objfile (struct objfile *objfile) | |
770 | { | |
771 | int i; | |
772 | struct partial_symtab *ps; | |
773 | i = 0; | |
774 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
775 | { | |
776 | if (ps->readin == 0) | |
777 | i++; | |
778 | } | |
779 | printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i); | |
780 | } | |
781 | ||
782 | static void | |
783 | dump_psymtabs_for_objfile (struct objfile *objfile) | |
784 | { | |
785 | struct partial_symtab *psymtab; | |
786 | ||
787 | if (objfile->psymtabs) | |
788 | { | |
789 | printf_filtered ("Psymtabs:\n"); | |
790 | for (psymtab = objfile->psymtabs; | |
791 | psymtab != NULL; | |
792 | psymtab = psymtab->next) | |
793 | { | |
794 | printf_filtered ("%s at ", | |
795 | psymtab->filename); | |
796 | gdb_print_host_address (psymtab, gdb_stdout); | |
797 | printf_filtered (", "); | |
798 | if (psymtab->objfile != objfile) | |
799 | { | |
800 | printf_filtered ("NOT ON CHAIN! "); | |
801 | } | |
802 | wrap_here (" "); | |
803 | } | |
804 | printf_filtered ("\n\n"); | |
805 | } | |
806 | } | |
807 | ||
808 | /* Look through the partial symtabs for all symbols which begin | |
809 | by matching FUNC_NAME. Make sure we read that symbol table in. */ | |
810 | ||
811 | static void | |
812 | read_symtabs_for_function (struct objfile *objfile, const char *func_name) | |
813 | { | |
814 | struct partial_symtab *ps; | |
815 | ||
816 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
817 | { | |
818 | if (ps->readin) | |
819 | continue; | |
820 | ||
821 | if ((lookup_partial_symbol (ps, func_name, 1, VAR_DOMAIN) | |
822 | != NULL) | |
823 | || (lookup_partial_symbol (ps, func_name, 0, VAR_DOMAIN) | |
824 | != NULL)) | |
825 | psymtab_to_symtab (ps); | |
826 | } | |
827 | } | |
828 | ||
829 | static void | |
830 | expand_partial_symbol_tables (struct objfile *objfile) | |
831 | { | |
832 | struct partial_symtab *psymtab; | |
833 | ||
834 | for (psymtab = objfile->psymtabs; | |
835 | psymtab != NULL; | |
836 | psymtab = psymtab->next) | |
837 | { | |
838 | psymtab_to_symtab (psymtab); | |
839 | } | |
840 | } | |
841 | ||
842 | static void | |
843 | read_psymtabs_with_filename (struct objfile *objfile, const char *filename) | |
844 | { | |
845 | struct partial_symtab *p; | |
846 | ||
847 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
848 | { | |
849 | if (strcmp (filename, p->filename) == 0) | |
850 | PSYMTAB_TO_SYMTAB (p); | |
851 | } | |
852 | } | |
853 | ||
854 | static void | |
855 | map_symbol_names_psymtab (struct objfile *objfile, | |
856 | void (*fun) (const char *, void *), void *data) | |
857 | { | |
858 | struct partial_symtab *ps; | |
859 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
860 | { | |
861 | struct partial_symbol **psym; | |
862 | ||
863 | /* If the psymtab's been read in we'll get it when we search | |
864 | through the blockvector. */ | |
865 | if (ps->readin) | |
866 | continue; | |
867 | ||
868 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
869 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
870 | + ps->n_global_syms); | |
871 | psym++) | |
872 | { | |
873 | /* If interrupted, then quit. */ | |
874 | QUIT; | |
875 | (*fun) (SYMBOL_NATURAL_NAME (*psym), data); | |
876 | } | |
877 | ||
878 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
879 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
880 | + ps->n_static_syms); | |
881 | psym++) | |
882 | { | |
883 | QUIT; | |
884 | (*fun) (SYMBOL_NATURAL_NAME (*psym), data); | |
885 | } | |
886 | } | |
887 | } | |
888 | ||
889 | static void | |
890 | map_symbol_filenames_psymtab (struct objfile *objfile, | |
891 | void (*fun) (const char *, const char *, | |
892 | void *), | |
893 | void *data) | |
894 | { | |
895 | struct partial_symtab *ps; | |
896 | ||
897 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
898 | { | |
899 | const char *fullname; | |
900 | ||
901 | if (ps->readin) | |
902 | continue; | |
903 | ||
904 | fullname = psymtab_to_fullname (ps); | |
905 | (*fun) (fullname, ps->filename, data); | |
906 | } | |
907 | } | |
908 | ||
909 | int find_and_open_source (const char *filename, | |
910 | const char *dirname, | |
911 | char **fullname); | |
912 | ||
913 | /* Finds the fullname that a partial_symtab represents. | |
914 | ||
915 | If this functions finds the fullname, it will save it in ps->fullname | |
916 | and it will also return the value. | |
917 | ||
918 | If this function fails to find the file that this partial_symtab represents, | |
919 | NULL will be returned and ps->fullname will be set to NULL. */ | |
920 | static char * | |
921 | psymtab_to_fullname (struct partial_symtab *ps) | |
922 | { | |
923 | int r; | |
924 | ||
925 | if (!ps) | |
926 | return NULL; | |
927 | ||
928 | /* Don't check ps->fullname here, the file could have been | |
929 | deleted/moved/..., look for it again */ | |
930 | r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname); | |
931 | ||
932 | if (r >= 0) | |
933 | { | |
934 | close (r); | |
935 | return ps->fullname; | |
936 | } | |
937 | ||
938 | return NULL; | |
939 | } | |
940 | ||
941 | static char * | |
942 | find_symbol_file_from_partial (struct objfile *objfile, const char *name) | |
943 | { | |
944 | struct partial_symtab *pst; | |
945 | ||
946 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
947 | { | |
948 | if (lookup_partial_symbol (pst, name, 1, VAR_DOMAIN)) | |
949 | return pst->filename; | |
950 | } | |
951 | return NULL; | |
952 | } | |
953 | ||
954 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. | |
955 | Check the global symbols if GLOBAL, the static symbols if not. | |
956 | Do wild-card match if WILD. */ | |
957 | ||
958 | static struct partial_symbol * | |
959 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
960 | int global, domain_enum namespace, int wild, | |
961 | int (*wild_match) (const char *, int, const char *), | |
962 | int (*is_name_suffix) (const char *)) | |
963 | { | |
964 | struct partial_symbol **start; | |
965 | int name_len = strlen (name); | |
966 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
967 | int i; | |
968 | ||
969 | if (length == 0) | |
970 | { | |
971 | return (NULL); | |
972 | } | |
973 | ||
974 | start = (global ? | |
975 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
976 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
977 | ||
978 | if (wild) | |
979 | { | |
980 | for (i = 0; i < length; i += 1) | |
981 | { | |
982 | struct partial_symbol *psym = start[i]; | |
983 | ||
984 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), | |
985 | SYMBOL_DOMAIN (psym), namespace) | |
986 | && (*wild_match) (name, name_len, SYMBOL_LINKAGE_NAME (psym))) | |
987 | return psym; | |
988 | } | |
989 | return NULL; | |
990 | } | |
991 | else | |
992 | { | |
993 | if (global) | |
994 | { | |
995 | int U; | |
996 | i = 0; | |
997 | U = length - 1; | |
998 | while (U - i > 4) | |
999 | { | |
1000 | int M = (U + i) >> 1; | |
1001 | struct partial_symbol *psym = start[M]; | |
1002 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
1003 | i = M + 1; | |
1004 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
1005 | U = M - 1; | |
1006 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
1007 | i = M + 1; | |
1008 | else | |
1009 | U = M; | |
1010 | } | |
1011 | } | |
1012 | else | |
1013 | i = 0; | |
1014 | ||
1015 | while (i < length) | |
1016 | { | |
1017 | struct partial_symbol *psym = start[i]; | |
1018 | ||
1019 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), | |
1020 | SYMBOL_DOMAIN (psym), namespace)) | |
1021 | { | |
1022 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
1023 | ||
1024 | if (cmp < 0) | |
1025 | { | |
1026 | if (global) | |
1027 | break; | |
1028 | } | |
1029 | else if (cmp == 0 | |
1030 | && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym) | |
1031 | + name_len)) | |
1032 | return psym; | |
1033 | } | |
1034 | i += 1; | |
1035 | } | |
1036 | ||
1037 | if (global) | |
1038 | { | |
1039 | int U; | |
1040 | i = 0; | |
1041 | U = length - 1; | |
1042 | while (U - i > 4) | |
1043 | { | |
1044 | int M = (U + i) >> 1; | |
1045 | struct partial_symbol *psym = start[M]; | |
1046 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
1047 | i = M + 1; | |
1048 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
1049 | U = M - 1; | |
1050 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
1051 | i = M + 1; | |
1052 | else | |
1053 | U = M; | |
1054 | } | |
1055 | } | |
1056 | else | |
1057 | i = 0; | |
1058 | ||
1059 | while (i < length) | |
1060 | { | |
1061 | struct partial_symbol *psym = start[i]; | |
1062 | ||
1063 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), | |
1064 | SYMBOL_DOMAIN (psym), namespace)) | |
1065 | { | |
1066 | int cmp; | |
1067 | ||
1068 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; | |
1069 | if (cmp == 0) | |
1070 | { | |
1071 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
1072 | if (cmp == 0) | |
1073 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
1074 | name_len); | |
1075 | } | |
1076 | ||
1077 | if (cmp < 0) | |
1078 | { | |
1079 | if (global) | |
1080 | break; | |
1081 | } | |
1082 | else if (cmp == 0 | |
1083 | && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym) | |
1084 | + name_len + 5)) | |
1085 | return psym; | |
1086 | } | |
1087 | i += 1; | |
1088 | } | |
1089 | } | |
1090 | return NULL; | |
1091 | } | |
1092 | ||
1093 | static void | |
1094 | map_ada_symtabs (struct objfile *objfile, | |
1095 | int (*wild_match) (const char *, int, const char *), | |
1096 | int (*is_name_suffix) (const char *), | |
1097 | void (*callback) (struct objfile *, struct symtab *, void *), | |
1098 | const char *name, int global, domain_enum namespace, int wild, | |
1099 | void *data) | |
1100 | { | |
1101 | struct partial_symtab *ps; | |
1102 | ||
1103 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
1104 | { | |
1105 | QUIT; | |
1106 | if (ps->readin | |
1107 | || ada_lookup_partial_symbol (ps, name, global, namespace, wild, | |
1108 | wild_match, is_name_suffix)) | |
1109 | { | |
1110 | struct symtab *s = PSYMTAB_TO_SYMTAB (ps); | |
1111 | if (s == NULL || !s->primary) | |
1112 | continue; | |
1113 | (*callback) (objfile, s, data); | |
1114 | } | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | static void | |
1119 | expand_symtabs_matching_via_partial (struct objfile *objfile, | |
1120 | int (*file_matcher) (const char *, void *), | |
1121 | int (*name_matcher) (const char *, void *), | |
1122 | domain_enum kind, | |
1123 | void *data) | |
1124 | { | |
1125 | struct partial_symtab *ps; | |
1126 | ||
1127 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
1128 | { | |
1129 | struct partial_symbol **psym; | |
1130 | struct partial_symbol **bound, **gbound, **sbound; | |
1131 | int keep_going = 1; | |
1132 | ||
1133 | if (ps->readin) | |
1134 | continue; | |
1135 | ||
1136 | if (! (*file_matcher) (ps->filename, data)) | |
1137 | continue; | |
1138 | ||
1139 | gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; | |
1140 | sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; | |
1141 | bound = gbound; | |
1142 | ||
1143 | /* Go through all of the symbols stored in a partial | |
1144 | symtab in one loop. */ | |
1145 | psym = objfile->global_psymbols.list + ps->globals_offset; | |
1146 | while (keep_going) | |
1147 | { | |
1148 | if (psym >= bound) | |
1149 | { | |
1150 | if (bound == gbound && ps->n_static_syms != 0) | |
1151 | { | |
1152 | psym = objfile->static_psymbols.list + ps->statics_offset; | |
1153 | bound = sbound; | |
1154 | } | |
1155 | else | |
1156 | keep_going = 0; | |
1157 | continue; | |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | QUIT; | |
1162 | ||
1163 | if ((*name_matcher) (SYMBOL_NATURAL_NAME (*psym), data) | |
1164 | && ((kind == VARIABLES_DOMAIN | |
1165 | && SYMBOL_CLASS (*psym) != LOC_TYPEDEF | |
1166 | && SYMBOL_CLASS (*psym) != LOC_BLOCK) | |
1167 | || (kind == FUNCTIONS_DOMAIN | |
1168 | && SYMBOL_CLASS (*psym) == LOC_BLOCK) | |
1169 | || (kind == TYPES_DOMAIN | |
1170 | && SYMBOL_CLASS (*psym) == LOC_TYPEDEF))) | |
1171 | { | |
1172 | PSYMTAB_TO_SYMTAB (ps); | |
1173 | keep_going = 0; | |
1174 | } | |
1175 | } | |
1176 | psym++; | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | static int | |
1182 | objfile_has_psyms (struct objfile *objfile) | |
1183 | { | |
1184 | return objfile->psymtabs != NULL; | |
1185 | } | |
1186 | ||
1187 | const struct quick_symbol_functions psym_functions = | |
1188 | { | |
1189 | objfile_has_psyms, | |
1190 | find_last_source_symtab_from_partial, | |
1191 | forget_cached_source_info_partial, | |
1192 | lookup_symtab_via_partial_symtab, | |
1193 | lookup_symbol_aux_psymtabs, | |
1194 | print_psymtab_stats_for_objfile, | |
1195 | dump_psymtabs_for_objfile, | |
1196 | relocate_psymtabs, | |
1197 | read_symtabs_for_function, | |
1198 | expand_partial_symbol_tables, | |
1199 | read_psymtabs_with_filename, | |
1200 | find_symbol_file_from_partial, | |
1201 | map_ada_symtabs, | |
1202 | expand_symtabs_matching_via_partial, | |
1203 | find_pc_sect_symtab_from_partial, | |
1204 | map_symbol_names_psymtab, | |
1205 | map_symbol_filenames_psymtab | |
1206 | }; | |
1207 | ||
1208 | \f | |
1209 | ||
1210 | /* This compares two partial symbols by names, using strcmp_iw_ordered | |
1211 | for the comparison. */ | |
1212 | ||
1213 | static int | |
1214 | compare_psymbols (const void *s1p, const void *s2p) | |
1215 | { | |
1216 | struct partial_symbol *const *s1 = s1p; | |
1217 | struct partial_symbol *const *s2 = s2p; | |
1218 | ||
1219 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), | |
1220 | SYMBOL_SEARCH_NAME (*s2)); | |
1221 | } | |
1222 | ||
1223 | void | |
1224 | sort_pst_symbols (struct partial_symtab *pst) | |
1225 | { | |
1226 | /* Sort the global list; don't sort the static list */ | |
1227 | ||
1228 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, | |
1229 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
1230 | compare_psymbols); | |
1231 | } | |
1232 | ||
1233 | /* Allocate and partially fill a partial symtab. It will be | |
1234 | completely filled at the end of the symbol list. | |
1235 | ||
1236 | FILENAME is the name of the symbol-file we are reading from. */ | |
1237 | ||
1238 | struct partial_symtab * | |
1239 | start_psymtab_common (struct objfile *objfile, | |
1240 | struct section_offsets *section_offsets, | |
1241 | const char *filename, | |
1242 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
1243 | struct partial_symbol **static_syms) | |
1244 | { | |
1245 | struct partial_symtab *psymtab; | |
1246 | ||
1247 | psymtab = allocate_psymtab (filename, objfile); | |
1248 | psymtab->section_offsets = section_offsets; | |
1249 | psymtab->textlow = textlow; | |
1250 | psymtab->texthigh = psymtab->textlow; /* default */ | |
1251 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
1252 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
1253 | return (psymtab); | |
1254 | } | |
1255 | ||
1256 | /* Helper function, initialises partial symbol structure and stashes | |
1257 | it into objfile's bcache. Note that our caching mechanism will | |
1258 | use all fields of struct partial_symbol to determine hash value of the | |
1259 | structure. In other words, having two symbols with the same name but | |
1260 | different domain (or address) is possible and correct. */ | |
1261 | ||
1262 | static const struct partial_symbol * | |
1263 | add_psymbol_to_bcache (char *name, int namelength, int copy_name, | |
1264 | domain_enum domain, | |
1265 | enum address_class class, | |
1266 | long val, /* Value as a long */ | |
1267 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
1268 | enum language language, struct objfile *objfile, | |
1269 | int *added) | |
1270 | { | |
1271 | /* psymbol is static so that there will be no uninitialized gaps in the | |
1272 | structure which might contain random data, causing cache misses in | |
1273 | bcache. */ | |
1274 | static struct partial_symbol psymbol; | |
1275 | ||
1276 | /* However, we must ensure that the entire 'value' field has been | |
1277 | zeroed before assigning to it, because an assignment may not | |
1278 | write the entire field. */ | |
1279 | memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value)); | |
1280 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
1281 | if (val != 0) | |
1282 | { | |
1283 | SYMBOL_VALUE (&psymbol) = val; | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
1288 | } | |
1289 | SYMBOL_SECTION (&psymbol) = 0; | |
1290 | SYMBOL_LANGUAGE (&psymbol) = language; | |
1291 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
1292 | PSYMBOL_CLASS (&psymbol) = class; | |
1293 | ||
1294 | SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile); | |
1295 | ||
1296 | /* Stash the partial symbol away in the cache */ | |
1297 | return bcache_full (&psymbol, sizeof (struct partial_symbol), | |
1298 | objfile->psymbol_cache, added); | |
1299 | } | |
1300 | ||
1301 | /* Helper function, adds partial symbol to the given partial symbol | |
1302 | list. */ | |
1303 | ||
1304 | static void | |
1305 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
1306 | const struct partial_symbol *psym, | |
1307 | struct objfile *objfile) | |
1308 | { | |
1309 | if (list->next >= list->list + list->size) | |
1310 | extend_psymbol_list (list, objfile); | |
1311 | *list->next++ = (struct partial_symbol *) psym; | |
1312 | OBJSTAT (objfile, n_psyms++); | |
1313 | } | |
1314 | ||
1315 | /* Add a symbol with a long value to a psymtab. | |
1316 | Since one arg is a struct, we pass in a ptr and deref it (sigh). | |
1317 | Return the partial symbol that has been added. */ | |
1318 | ||
1319 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
1320 | symbol is so that callers can get access to the symbol's demangled | |
1321 | name, which they don't have any cheap way to determine otherwise. | |
1322 | (Currenly, dwarf2read.c is the only file who uses that information, | |
1323 | though it's possible that other readers might in the future.) | |
1324 | Elena wasn't thrilled about that, and I don't blame her, but we | |
1325 | couldn't come up with a better way to get that information. If | |
1326 | it's needed in other situations, we could consider breaking up | |
1327 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
1328 | cache. */ | |
1329 | ||
1330 | const struct partial_symbol * | |
1331 | add_psymbol_to_list (char *name, int namelength, int copy_name, | |
1332 | domain_enum domain, | |
1333 | enum address_class class, | |
1334 | struct psymbol_allocation_list *list, | |
1335 | long val, /* Value as a long */ | |
1336 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
1337 | enum language language, struct objfile *objfile) | |
1338 | { | |
1339 | const struct partial_symbol *psym; | |
1340 | ||
1341 | int added; | |
1342 | ||
1343 | /* Stash the partial symbol away in the cache */ | |
1344 | psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class, | |
1345 | val, coreaddr, language, objfile, &added); | |
1346 | ||
1347 | /* Do not duplicate global partial symbols. */ | |
1348 | if (list == &objfile->global_psymbols | |
1349 | && !added) | |
1350 | return psym; | |
1351 | ||
1352 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
1353 | append_psymbol_to_list (list, psym, objfile); | |
1354 | return psym; | |
1355 | } | |
1356 | ||
1357 | /* Initialize storage for partial symbols. */ | |
1358 | ||
1359 | void | |
1360 | init_psymbol_list (struct objfile *objfile, int total_symbols) | |
1361 | { | |
1362 | /* Free any previously allocated psymbol lists. */ | |
1363 | ||
1364 | if (objfile->global_psymbols.list) | |
1365 | { | |
1366 | xfree (objfile->global_psymbols.list); | |
1367 | } | |
1368 | if (objfile->static_psymbols.list) | |
1369 | { | |
1370 | xfree (objfile->static_psymbols.list); | |
1371 | } | |
1372 | ||
1373 | /* Current best guess is that approximately a twentieth | |
1374 | of the total symbols (in a debugging file) are global or static | |
1375 | oriented symbols */ | |
1376 | ||
1377 | objfile->global_psymbols.size = total_symbols / 10; | |
1378 | objfile->static_psymbols.size = total_symbols / 10; | |
1379 | ||
1380 | if (objfile->global_psymbols.size > 0) | |
1381 | { | |
1382 | objfile->global_psymbols.next = | |
1383 | objfile->global_psymbols.list = (struct partial_symbol **) | |
1384 | xmalloc ((objfile->global_psymbols.size | |
1385 | * sizeof (struct partial_symbol *))); | |
1386 | } | |
1387 | if (objfile->static_psymbols.size > 0) | |
1388 | { | |
1389 | objfile->static_psymbols.next = | |
1390 | objfile->static_psymbols.list = (struct partial_symbol **) | |
1391 | xmalloc ((objfile->static_psymbols.size | |
1392 | * sizeof (struct partial_symbol *))); | |
1393 | } | |
1394 | } | |
1395 | ||
1396 | struct partial_symtab * | |
1397 | allocate_psymtab (const char *filename, struct objfile *objfile) | |
1398 | { | |
1399 | struct partial_symtab *psymtab; | |
1400 | ||
1401 | if (objfile->free_psymtabs) | |
1402 | { | |
1403 | psymtab = objfile->free_psymtabs; | |
1404 | objfile->free_psymtabs = psymtab->next; | |
1405 | } | |
1406 | else | |
1407 | psymtab = (struct partial_symtab *) | |
1408 | obstack_alloc (&objfile->objfile_obstack, | |
1409 | sizeof (struct partial_symtab)); | |
1410 | ||
1411 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
1412 | psymtab->filename = obsavestring (filename, strlen (filename), | |
1413 | &objfile->objfile_obstack); | |
1414 | psymtab->symtab = NULL; | |
1415 | ||
1416 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
1417 | Psymtabs are searched in most recent inserted -> least recent | |
1418 | inserted order. */ | |
1419 | ||
1420 | psymtab->objfile = objfile; | |
1421 | psymtab->next = objfile->psymtabs; | |
1422 | objfile->psymtabs = psymtab; | |
ccefe4c4 TT |
1423 | |
1424 | return (psymtab); | |
1425 | } | |
1426 | ||
1427 | void | |
1428 | discard_psymtab (struct partial_symtab *pst) | |
1429 | { | |
1430 | struct partial_symtab **prev_pst; | |
1431 | ||
1432 | /* From dbxread.c: | |
1433 | Empty psymtabs happen as a result of header files which don't | |
1434 | have any symbols in them. There can be a lot of them. But this | |
1435 | check is wrong, in that a psymtab with N_SLINE entries but | |
1436 | nothing else is not empty, but we don't realize that. Fixing | |
1437 | that without slowing things down might be tricky. */ | |
1438 | ||
1439 | /* First, snip it out of the psymtab chain */ | |
1440 | ||
1441 | prev_pst = &(pst->objfile->psymtabs); | |
1442 | while ((*prev_pst) != pst) | |
1443 | prev_pst = &((*prev_pst)->next); | |
1444 | (*prev_pst) = pst->next; | |
1445 | ||
1446 | /* Next, put it on a free list for recycling */ | |
1447 | ||
1448 | pst->next = pst->objfile->free_psymtabs; | |
1449 | pst->objfile->free_psymtabs = pst; | |
1450 | } | |
1451 | ||
1452 | /* Increase the space allocated for LISTP, which is probably | |
1453 | global_psymbols or static_psymbols. This space will eventually | |
1454 | be freed in free_objfile(). */ | |
1455 | ||
1456 | void | |
1457 | extend_psymbol_list (struct psymbol_allocation_list *listp, | |
1458 | struct objfile *objfile) | |
1459 | { | |
1460 | int new_size; | |
1461 | if (listp->size == 0) | |
1462 | { | |
1463 | new_size = 255; | |
1464 | listp->list = (struct partial_symbol **) | |
1465 | xmalloc (new_size * sizeof (struct partial_symbol *)); | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | new_size = listp->size * 2; | |
1470 | listp->list = (struct partial_symbol **) | |
1471 | xrealloc ((char *) listp->list, | |
1472 | new_size * sizeof (struct partial_symbol *)); | |
1473 | } | |
1474 | /* Next assumes we only went one over. Should be good if | |
1475 | program works correctly */ | |
1476 | listp->next = listp->list + listp->size; | |
1477 | listp->size = new_size; | |
1478 | } | |
1479 | ||
1480 | \f | |
1481 | ||
1482 | void | |
1483 | maintenance_print_psymbols (char *args, int from_tty) | |
1484 | { | |
1485 | char **argv; | |
1486 | struct ui_file *outfile; | |
1487 | struct cleanup *cleanups; | |
1488 | char *symname = NULL; | |
1489 | char *filename = DEV_TTY; | |
1490 | struct objfile *objfile; | |
1491 | struct partial_symtab *ps; | |
1492 | ||
1493 | dont_repeat (); | |
1494 | ||
1495 | if (args == NULL) | |
1496 | { | |
1497 | error (_("print-psymbols takes an output file name and optional symbol file name")); | |
1498 | } | |
1499 | argv = gdb_buildargv (args); | |
1500 | cleanups = make_cleanup_freeargv (argv); | |
1501 | ||
1502 | if (argv[0] != NULL) | |
1503 | { | |
1504 | filename = argv[0]; | |
1505 | /* If a second arg is supplied, it is a source file name to match on */ | |
1506 | if (argv[1] != NULL) | |
1507 | { | |
1508 | symname = argv[1]; | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | filename = tilde_expand (filename); | |
1513 | make_cleanup (xfree, filename); | |
1514 | ||
1515 | outfile = gdb_fopen (filename, FOPEN_WT); | |
1516 | if (outfile == 0) | |
1517 | perror_with_name (filename); | |
1518 | make_cleanup_ui_file_delete (outfile); | |
1519 | ||
1520 | immediate_quit++; | |
1521 | ALL_PSYMTABS (objfile, ps) | |
1522 | if (symname == NULL || strcmp (symname, ps->filename) == 0) | |
1523 | dump_psymtab (objfile, ps, outfile); | |
1524 | immediate_quit--; | |
1525 | do_cleanups (cleanups); | |
1526 | } | |
1527 | ||
1528 | /* List all the partial symbol tables whose names match REGEXP (optional). */ | |
1529 | void | |
1530 | maintenance_info_psymtabs (char *regexp, int from_tty) | |
1531 | { | |
1532 | struct program_space *pspace; | |
1533 | struct objfile *objfile; | |
1534 | ||
1535 | if (regexp) | |
1536 | re_comp (regexp); | |
1537 | ||
1538 | ALL_PSPACES (pspace) | |
1539 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
1540 | { | |
1541 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1542 | struct partial_symtab *psymtab; | |
1543 | ||
1544 | /* We don't want to print anything for this objfile until we | |
1545 | actually find a symtab whose name matches. */ | |
1546 | int printed_objfile_start = 0; | |
1547 | ||
1548 | ALL_OBJFILE_PSYMTABS (objfile, psymtab) | |
1549 | { | |
1550 | QUIT; | |
1551 | ||
1552 | if (! regexp | |
1553 | || re_exec (psymtab->filename)) | |
1554 | { | |
1555 | if (! printed_objfile_start) | |
1556 | { | |
1557 | printf_filtered ("{ objfile %s ", objfile->name); | |
1558 | wrap_here (" "); | |
1559 | printf_filtered ("((struct objfile *) %s)\n", | |
1560 | host_address_to_string (objfile)); | |
1561 | printed_objfile_start = 1; | |
1562 | } | |
1563 | ||
1564 | printf_filtered (" { psymtab %s ", psymtab->filename); | |
1565 | wrap_here (" "); | |
1566 | printf_filtered ("((struct partial_symtab *) %s)\n", | |
1567 | host_address_to_string (psymtab)); | |
1568 | ||
1569 | printf_filtered (" readin %s\n", | |
1570 | psymtab->readin ? "yes" : "no"); | |
1571 | printf_filtered (" fullname %s\n", | |
1572 | psymtab->fullname ? psymtab->fullname : "(null)"); | |
1573 | printf_filtered (" text addresses "); | |
1574 | fputs_filtered (paddress (gdbarch, psymtab->textlow), | |
1575 | gdb_stdout); | |
1576 | printf_filtered (" -- "); | |
1577 | fputs_filtered (paddress (gdbarch, psymtab->texthigh), | |
1578 | gdb_stdout); | |
1579 | printf_filtered ("\n"); | |
1580 | printf_filtered (" globals "); | |
1581 | if (psymtab->n_global_syms) | |
1582 | { | |
1583 | printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n", | |
1584 | host_address_to_string (psymtab->objfile->global_psymbols.list | |
1585 | + psymtab->globals_offset), | |
1586 | psymtab->n_global_syms); | |
1587 | } | |
1588 | else | |
1589 | printf_filtered ("(none)\n"); | |
1590 | printf_filtered (" statics "); | |
1591 | if (psymtab->n_static_syms) | |
1592 | { | |
1593 | printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n", | |
1594 | host_address_to_string (psymtab->objfile->static_psymbols.list | |
1595 | + psymtab->statics_offset), | |
1596 | psymtab->n_static_syms); | |
1597 | } | |
1598 | else | |
1599 | printf_filtered ("(none)\n"); | |
1600 | printf_filtered (" dependencies "); | |
1601 | if (psymtab->number_of_dependencies) | |
1602 | { | |
1603 | int i; | |
1604 | ||
1605 | printf_filtered ("{\n"); | |
1606 | for (i = 0; i < psymtab->number_of_dependencies; i++) | |
1607 | { | |
1608 | struct partial_symtab *dep = psymtab->dependencies[i]; | |
1609 | ||
1610 | /* Note the string concatenation there --- no comma. */ | |
1611 | printf_filtered (" psymtab %s " | |
1612 | "((struct partial_symtab *) %s)\n", | |
1613 | dep->filename, | |
1614 | host_address_to_string (dep)); | |
1615 | } | |
1616 | printf_filtered (" }\n"); | |
1617 | } | |
1618 | else | |
1619 | printf_filtered ("(none)\n"); | |
1620 | printf_filtered (" }\n"); | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | if (printed_objfile_start) | |
1625 | printf_filtered ("}\n"); | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | /* Check consistency of psymtabs and symtabs. */ | |
1630 | ||
1631 | void | |
1632 | maintenance_check_symtabs (char *ignore, int from_tty) | |
1633 | { | |
1634 | struct symbol *sym; | |
1635 | struct partial_symbol **psym; | |
1636 | struct symtab *s = NULL; | |
1637 | struct partial_symtab *ps; | |
1638 | struct blockvector *bv; | |
1639 | struct objfile *objfile; | |
1640 | struct block *b; | |
1641 | int length; | |
1642 | ||
1643 | ALL_PSYMTABS (objfile, ps) | |
1644 | { | |
1645 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1646 | s = PSYMTAB_TO_SYMTAB (ps); | |
1647 | if (s == NULL) | |
1648 | continue; | |
1649 | bv = BLOCKVECTOR (s); | |
1650 | b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1651 | psym = ps->objfile->static_psymbols.list + ps->statics_offset; | |
1652 | length = ps->n_static_syms; | |
1653 | while (length--) | |
1654 | { | |
1655 | sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym), | |
1656 | SYMBOL_DOMAIN (*psym)); | |
1657 | if (!sym) | |
1658 | { | |
1659 | printf_filtered ("Static symbol `"); | |
1660 | puts_filtered (SYMBOL_LINKAGE_NAME (*psym)); | |
1661 | printf_filtered ("' only found in "); | |
1662 | puts_filtered (ps->filename); | |
1663 | printf_filtered (" psymtab\n"); | |
1664 | } | |
1665 | psym++; | |
1666 | } | |
1667 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1668 | psym = ps->objfile->global_psymbols.list + ps->globals_offset; | |
1669 | length = ps->n_global_syms; | |
1670 | while (length--) | |
1671 | { | |
1672 | sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym), | |
1673 | SYMBOL_DOMAIN (*psym)); | |
1674 | if (!sym) | |
1675 | { | |
1676 | printf_filtered ("Global symbol `"); | |
1677 | puts_filtered (SYMBOL_LINKAGE_NAME (*psym)); | |
1678 | printf_filtered ("' only found in "); | |
1679 | puts_filtered (ps->filename); | |
1680 | printf_filtered (" psymtab\n"); | |
1681 | } | |
1682 | psym++; | |
1683 | } | |
1684 | if (ps->texthigh < ps->textlow) | |
1685 | { | |
1686 | printf_filtered ("Psymtab "); | |
1687 | puts_filtered (ps->filename); | |
1688 | printf_filtered (" covers bad range "); | |
1689 | fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout); | |
1690 | printf_filtered (" - "); | |
1691 | fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout); | |
1692 | printf_filtered ("\n"); | |
1693 | continue; | |
1694 | } | |
1695 | if (ps->texthigh == 0) | |
1696 | continue; | |
1697 | if (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)) | |
1698 | { | |
1699 | printf_filtered ("Psymtab "); | |
1700 | puts_filtered (ps->filename); | |
1701 | printf_filtered (" covers "); | |
1702 | fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout); | |
1703 | printf_filtered (" - "); | |
1704 | fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout); | |
1705 | printf_filtered (" but symtab covers only "); | |
1706 | fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout); | |
1707 | printf_filtered (" - "); | |
1708 | fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout); | |
1709 | printf_filtered ("\n"); | |
1710 | } | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | \f | |
1715 | ||
1716 | void | |
1717 | map_partial_symbol_names (void (*fun) (const char *, void *), void *data) | |
1718 | { | |
1719 | struct objfile *objfile; | |
1720 | ||
1721 | ALL_OBJFILES (objfile) | |
1722 | { | |
1723 | if (objfile->sf) | |
1724 | objfile->sf->qf->map_symbol_names (objfile, fun, data); | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | void | |
1729 | map_partial_symbol_filenames (void (*fun) (const char *, const char *, | |
1730 | void *), | |
1731 | void *data) | |
1732 | { | |
1733 | struct objfile *objfile; | |
1734 | ||
1735 | ALL_OBJFILES (objfile) | |
1736 | { | |
1737 | if (objfile->sf) | |
1738 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data); | |
1739 | } | |
1740 | } |