1 /* Partial symbol tables.
3 Copyright (C) 2009-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
25 #include "filenames.h"
32 #include "readline/readline.h"
33 #include "gdb_regex.h"
34 #include "dictionary.h"
36 #include "cp-support.h"
40 #define DEV_TTY "/dev/tty"
45 struct bcache *bcache;
48 static struct partial_symbol *match_partial_symbol (struct objfile *,
49 struct partial_symtab *,
51 const char *, domain_enum,
52 symbol_compare_ftype *,
53 symbol_compare_ftype *);
55 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
56 struct partial_symtab *,
60 static const char *psymtab_to_fullname (struct partial_symtab *ps);
62 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
63 struct partial_symtab *,
65 struct obj_section *);
67 static void fixup_psymbol_section (struct partial_symbol *psym,
68 struct objfile *objfile);
70 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
71 struct partial_symtab *pst);
73 /* Ensure that the partial symbols for OBJFILE have been loaded. This
74 function always returns its argument, as a convenience. */
77 require_partial_symbols (struct objfile *objfile, int verbose)
79 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
81 objfile->flags |= OBJF_PSYMTABS_READ;
83 if (objfile->sf->sym_read_psymbols)
87 printf_unfiltered (_("Reading symbols from %s..."),
88 objfile_name (objfile));
89 gdb_flush (gdb_stdout);
91 (*objfile->sf->sym_read_psymbols) (objfile);
94 if (!objfile_has_symbols (objfile))
97 printf_unfiltered (_("(no debugging symbols found)..."));
101 printf_unfiltered (_("done.\n"));
109 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
112 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
113 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
117 /* We want to make sure this file always requires psymtabs. */
119 #undef ALL_OBJFILE_PSYMTABS
121 /* Traverse all psymtabs in all objfiles. */
123 #define ALL_PSYMTABS(objfile, p) \
124 ALL_OBJFILES (objfile) \
125 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
127 /* Helper function for psym_map_symtabs_matching_filename that
128 expands the symtabs and calls the iterator. */
131 partial_map_expand_apply (struct objfile *objfile,
133 const char *real_path,
134 struct partial_symtab *pst,
135 int (*callback) (struct symtab *, void *),
138 struct compunit_symtab *last_made = objfile->compunit_symtabs;
140 /* Shared psymtabs should never be seen here. Instead they should
141 be handled properly by the caller. */
142 gdb_assert (pst->user == NULL);
144 /* Don't visit already-expanded psymtabs. */
148 /* This may expand more than one symtab, and we want to iterate over
150 psymtab_to_symtab (objfile, pst);
152 return iterate_over_some_symtabs (name, real_path, callback, data,
153 objfile->compunit_symtabs, last_made);
156 /* Psymtab version of map_symtabs_matching_filename. See its definition in
157 the definition of quick_symbol_functions in symfile.h. */
160 psym_map_symtabs_matching_filename (struct objfile *objfile,
162 const char *real_path,
163 int (*callback) (struct symtab *,
167 struct partial_symtab *pst;
168 const char *name_basename = lbasename (name);
170 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
172 /* We can skip shared psymtabs here, because any file name will be
173 attached to the unshared psymtab. */
174 if (pst->user != NULL)
177 /* Anonymous psymtabs don't have a file name. */
181 if (compare_filenames_for_search (pst->filename, name))
183 if (partial_map_expand_apply (objfile, name, real_path,
184 pst, callback, data))
189 /* Before we invoke realpath, which can get expensive when many
190 files are involved, do a quick comparison of the basenames. */
191 if (! basenames_may_differ
192 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
195 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
197 if (partial_map_expand_apply (objfile, name, real_path,
198 pst, callback, data))
203 /* If the user gave us an absolute path, try to find the file in
204 this symtab and use its absolute path. */
205 if (real_path != NULL)
207 gdb_assert (IS_ABSOLUTE_PATH (real_path));
208 gdb_assert (IS_ABSOLUTE_PATH (name));
209 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
211 if (partial_map_expand_apply (objfile, name, real_path,
212 pst, callback, data))
222 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
223 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
225 static struct partial_symtab *
226 find_pc_sect_psymtab_closer (struct objfile *objfile,
227 CORE_ADDR pc, struct obj_section *section,
228 struct partial_symtab *pst,
229 struct bound_minimal_symbol msymbol)
231 struct partial_symtab *tpst;
232 struct partial_symtab *best_pst = pst;
233 CORE_ADDR best_addr = pst->textlow;
235 gdb_assert (!pst->psymtabs_addrmap_supported);
237 /* An objfile that has its functions reordered might have
238 many partial symbol tables containing the PC, but
239 we want the partial symbol table that contains the
240 function containing the PC. */
241 if (!(objfile->flags & OBJF_REORDERED) &&
242 section == 0) /* Can't validate section this way. */
245 if (msymbol.minsym == NULL)
248 /* The code range of partial symtabs sometimes overlap, so, in
249 the loop below, we need to check all partial symtabs and
250 find the one that fits better for the given PC address. We
251 select the partial symtab that contains a symbol whose
252 address is closest to the PC address. By closest we mean
253 that find_pc_sect_symbol returns the symbol with address
254 that is closest and still less than the given PC. */
255 for (tpst = pst; tpst != NULL; tpst = tpst->next)
257 if (pc >= tpst->textlow && pc < tpst->texthigh)
259 struct partial_symbol *p;
262 /* NOTE: This assumes that every psymbol has a
263 corresponding msymbol, which is not necessarily
264 true; the debug info might be much richer than the
265 object's symbol table. */
266 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
268 && SYMBOL_VALUE_ADDRESS (p)
269 == BMSYMBOL_VALUE_ADDRESS (msymbol))
272 /* Also accept the textlow value of a psymtab as a
273 "symbol", to provide some support for partial
274 symbol tables with line information but no debug
275 symbols (e.g. those produced by an assembler). */
277 this_addr = SYMBOL_VALUE_ADDRESS (p);
279 this_addr = tpst->textlow;
281 /* Check whether it is closer than our current
282 BEST_ADDR. Since this symbol address is
283 necessarily lower or equal to PC, the symbol closer
284 to PC is the symbol which address is the highest.
285 This way we return the psymtab which contains such
286 best match symbol. This can help in cases where the
287 symbol information/debuginfo is not complete, like
288 for instance on IRIX6 with gcc, where no debug info
289 is emitted for statics. (See also the nodebug.exp
291 if (this_addr > best_addr)
293 best_addr = this_addr;
301 /* Find which partial symtab contains PC and SECTION. Return 0 if
302 none. We return the psymtab that contains a symbol whose address
303 exactly matches PC, or, if we cannot find an exact match, the
304 psymtab that contains a symbol whose address is closest to PC. */
305 static struct partial_symtab *
306 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
307 struct obj_section *section,
308 struct bound_minimal_symbol msymbol)
310 struct partial_symtab *pst;
312 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
313 than the later used TEXTLOW/TEXTHIGH one. */
315 if (objfile->psymtabs_addrmap != NULL)
317 pst = addrmap_find (objfile->psymtabs_addrmap, pc);
320 /* FIXME: addrmaps currently do not handle overlayed sections,
321 so fall back to the non-addrmap case if we're debugging
322 overlays and the addrmap returned the wrong section. */
323 if (overlay_debugging && msymbol.minsym && section)
325 struct partial_symbol *p;
327 /* NOTE: This assumes that every psymbol has a
328 corresponding msymbol, which is not necessarily
329 true; the debug info might be much richer than the
330 object's symbol table. */
331 p = find_pc_sect_psymbol (objfile, pst, pc, section);
333 || SYMBOL_VALUE_ADDRESS (p)
334 != BMSYMBOL_VALUE_ADDRESS (msymbol))
338 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
339 PSYMTABS_ADDRMAP we used has already the best 1-byte
340 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
341 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
350 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
351 which still have no corresponding full SYMTABs read. But it is not
352 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
355 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
356 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
357 debug info type in single OBJFILE. */
359 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
360 if (!pst->psymtabs_addrmap_supported
361 && pc >= pst->textlow && pc < pst->texthigh)
363 struct partial_symtab *best_pst;
365 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
367 if (best_pst != NULL)
374 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
375 the definition of quick_symbol_functions in symfile.h. */
377 static struct compunit_symtab *
378 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
379 struct bound_minimal_symbol msymbol,
381 struct obj_section *section,
384 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
388 if (warn_if_readin && ps->readin)
389 /* Might want to error() here (in case symtab is corrupt and
390 will cause a core dump), but maybe we can successfully
391 continue, so let's not. */
393 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
394 paddress (get_objfile_arch (objfile), pc));
395 psymtab_to_symtab (objfile, ps);
396 return ps->compunit_symtab;
401 /* Find which partial symbol within a psymtab matches PC and SECTION.
404 static struct partial_symbol *
405 find_pc_sect_psymbol (struct objfile *objfile,
406 struct partial_symtab *psymtab, CORE_ADDR pc,
407 struct obj_section *section)
409 struct partial_symbol *best = NULL, *p, **pp;
412 gdb_assert (psymtab != NULL);
414 /* Cope with programs that start at address 0. */
415 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
417 /* Search the global symbols as well as the static symbols, so that
418 find_pc_partial_function doesn't use a minimal symbol and thus
419 cache a bad endaddr. */
420 for (pp = objfile->global_psymbols.list + psymtab->globals_offset;
421 (pp - (objfile->global_psymbols.list + psymtab->globals_offset)
422 < psymtab->n_global_syms);
426 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
427 && PSYMBOL_CLASS (p) == LOC_BLOCK
428 && pc >= SYMBOL_VALUE_ADDRESS (p)
429 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
430 || (psymtab->textlow == 0
431 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
433 if (section) /* Match on a specific section. */
435 fixup_psymbol_section (p, objfile);
436 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
440 best_pc = SYMBOL_VALUE_ADDRESS (p);
445 for (pp = objfile->static_psymbols.list + psymtab->statics_offset;
446 (pp - (objfile->static_psymbols.list + psymtab->statics_offset)
447 < psymtab->n_static_syms);
451 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
452 && PSYMBOL_CLASS (p) == LOC_BLOCK
453 && pc >= SYMBOL_VALUE_ADDRESS (p)
454 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
455 || (psymtab->textlow == 0
456 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
458 if (section) /* Match on a specific section. */
460 fixup_psymbol_section (p, objfile);
461 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
465 best_pc = SYMBOL_VALUE_ADDRESS (p);
474 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
481 if (SYMBOL_SECTION (psym) >= 0)
484 gdb_assert (objfile);
486 switch (PSYMBOL_CLASS (psym))
491 addr = SYMBOL_VALUE_ADDRESS (psym);
494 /* Nothing else will be listed in the minsyms -- no use looking
499 fixup_section (&psym->ginfo, addr, objfile);
502 /* Psymtab version of lookup_symbol. See its definition in
503 the definition of quick_symbol_functions in symfile.h. */
505 static struct compunit_symtab *
506 psym_lookup_symbol (struct objfile *objfile,
507 int block_index, const char *name,
508 const domain_enum domain)
510 struct partial_symtab *ps;
511 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
512 struct compunit_symtab *stab_best = NULL;
514 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
516 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
517 psymtab_index, domain))
519 struct symbol *sym = NULL;
520 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
521 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
522 is empty, we can assume it won't here because lookup_partial_symbol
524 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
525 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
527 /* Some caution must be observed with overloaded functions
528 and methods, since the psymtab will not contain any overload
529 information (but NAME might contain it). */
530 sym = block_lookup_symbol (block, name, domain);
532 if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0)
534 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
540 /* Keep looking through other psymtabs. */
547 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
548 the global block of PST if GLOBAL, and otherwise the static block.
549 MATCH is the comparison operation that returns true iff MATCH (s,
550 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
551 non-null, the symbols in the block are assumed to be ordered
552 according to it (allowing binary search). It must be compatible
553 with MATCH. Returns the symbol, if found, and otherwise NULL. */
555 static struct partial_symbol *
556 match_partial_symbol (struct objfile *objfile,
557 struct partial_symtab *pst, int global,
558 const char *name, domain_enum domain,
559 symbol_compare_ftype *match,
560 symbol_compare_ftype *ordered_compare)
562 struct partial_symbol **start, **psym;
563 struct partial_symbol **top, **real_top, **bottom, **center;
564 int length = (global ? pst->n_global_syms : pst->n_static_syms);
565 int do_linear_search = 1;
570 objfile->global_psymbols.list + pst->globals_offset :
571 objfile->static_psymbols.list + pst->statics_offset);
573 if (global && ordered_compare) /* Can use a binary search. */
575 do_linear_search = 0;
577 /* Binary search. This search is guaranteed to end with center
578 pointing at the earliest partial symbol whose name might be
579 correct. At that point *all* partial symbols with an
580 appropriate name will be checked against the correct
584 top = start + length - 1;
588 center = bottom + (top - bottom) / 2;
589 gdb_assert (center < top);
590 if (!do_linear_search
591 && (SYMBOL_LANGUAGE (*center) == language_java))
592 do_linear_search = 1;
593 if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
598 gdb_assert (top == bottom);
600 while (top <= real_top
601 && match (SYMBOL_SEARCH_NAME (*top), name) == 0)
603 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
604 SYMBOL_DOMAIN (*top), domain))
610 /* Can't use a binary search or else we found during the binary search that
611 we should also do a linear search. */
613 if (do_linear_search)
615 for (psym = start; psym < start + length; psym++)
617 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
618 SYMBOL_DOMAIN (*psym), domain)
619 && match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
627 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
628 not contain any method/function instance information (since this would
629 force reading type information while reading psymtabs). Therefore,
630 if NAME contains overload information, it must be stripped before searching
633 The caller is responsible for freeing the return result. */
636 psymtab_search_name (const char *name)
638 switch (current_language->la_language)
643 if (strchr (name, '('))
645 char *ret = cp_remove_params (name);
657 return xstrdup (name);
660 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
661 Check the global symbols if GLOBAL, the static symbols if not. */
663 static struct partial_symbol *
664 lookup_partial_symbol (struct objfile *objfile,
665 struct partial_symtab *pst, const char *name,
666 int global, domain_enum domain)
668 struct partial_symbol **start, **psym;
669 struct partial_symbol **top, **real_top, **bottom, **center;
670 int length = (global ? pst->n_global_syms : pst->n_static_syms);
671 int do_linear_search = 1;
673 struct cleanup *cleanup;
680 search_name = psymtab_search_name (name);
681 cleanup = make_cleanup (xfree, search_name);
683 objfile->global_psymbols.list + pst->globals_offset :
684 objfile->static_psymbols.list + pst->statics_offset);
686 if (global) /* This means we can use a binary search. */
688 do_linear_search = 0;
690 /* Binary search. This search is guaranteed to end with center
691 pointing at the earliest partial symbol whose name might be
692 correct. At that point *all* partial symbols with an
693 appropriate name will be checked against the correct
697 top = start + length - 1;
701 center = bottom + (top - bottom) / 2;
703 internal_error (__FILE__, __LINE__,
704 _("failed internal consistency check"));
705 if (!do_linear_search
706 && SYMBOL_LANGUAGE (*center) == language_java)
708 do_linear_search = 1;
710 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center),
720 if (!(top == bottom))
721 internal_error (__FILE__, __LINE__,
722 _("failed internal consistency check"));
724 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
725 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
726 while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
729 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
732 while (top <= real_top && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
734 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
735 SYMBOL_DOMAIN (*top), domain))
737 do_cleanups (cleanup);
744 /* Can't use a binary search or else we found during the binary search that
745 we should also do a linear search. */
747 if (do_linear_search)
749 for (psym = start; psym < start + length; psym++)
751 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
752 SYMBOL_DOMAIN (*psym), domain)
753 && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name))
755 do_cleanups (cleanup);
761 do_cleanups (cleanup);
765 /* Get the symbol table that corresponds to a partial_symtab.
766 This is fast after the first time you do it.
767 The result will be NULL if the primary symtab has no symbols,
768 which can happen. Otherwise the result is the primary symtab
769 that contains PST. */
771 static struct compunit_symtab *
772 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
774 /* If it is a shared psymtab, find an unshared psymtab that includes
775 it. Any such psymtab will do. */
776 while (pst->user != NULL)
779 /* If it's been looked up before, return it. */
780 if (pst->compunit_symtab)
781 return pst->compunit_symtab;
783 /* If it has not yet been read in, read it. */
786 struct cleanup *back_to = increment_reading_symtab ();
788 (*pst->read_symtab) (pst, objfile);
789 do_cleanups (back_to);
792 return pst->compunit_symtab;
795 /* Psymtab version of relocate. See its definition in
796 the definition of quick_symbol_functions in symfile.h. */
799 psym_relocate (struct objfile *objfile,
800 const struct section_offsets *new_offsets,
801 const struct section_offsets *delta)
803 struct partial_symbol **psym;
804 struct partial_symtab *p;
806 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
808 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
809 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
812 for (psym = objfile->global_psymbols.list;
813 psym < objfile->global_psymbols.next;
816 fixup_psymbol_section (*psym, objfile);
817 if (SYMBOL_SECTION (*psym) >= 0)
818 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
819 SYMBOL_SECTION (*psym));
821 for (psym = objfile->static_psymbols.list;
822 psym < objfile->static_psymbols.next;
825 fixup_psymbol_section (*psym, objfile);
826 if (SYMBOL_SECTION (*psym) >= 0)
827 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
828 SYMBOL_SECTION (*psym));
832 /* Psymtab version of find_last_source_symtab. See its definition in
833 the definition of quick_symbol_functions in symfile.h. */
835 static struct symtab *
836 psym_find_last_source_symtab (struct objfile *ofp)
838 struct partial_symtab *ps;
839 struct partial_symtab *cs_pst = 0;
841 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
843 const char *name = ps->filename;
844 int len = strlen (name);
846 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
847 || strcmp (name, "<<C++-namespaces>>") == 0)))
855 internal_error (__FILE__, __LINE__,
856 _("select_source_symtab: "
857 "readin pst found and no symtabs."));
861 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
865 return compunit_primary_filetab (cust);
871 /* Psymtab version of forget_cached_source_info. See its definition in
872 the definition of quick_symbol_functions in symfile.h. */
875 psym_forget_cached_source_info (struct objfile *objfile)
877 struct partial_symtab *pst;
879 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
881 if (pst->fullname != NULL)
883 xfree (pst->fullname);
884 pst->fullname = NULL;
890 print_partial_symbols (struct gdbarch *gdbarch,
891 struct partial_symbol **p, int count, char *what,
892 struct ui_file *outfile)
894 fprintf_filtered (outfile, " %s partial symbols:\n", what);
898 fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
899 if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
901 fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
903 fputs_filtered (", ", outfile);
904 switch (SYMBOL_DOMAIN (*p))
907 fputs_filtered ("undefined domain, ", outfile);
910 /* This is the usual thing -- don't print it. */
913 fputs_filtered ("struct domain, ", outfile);
916 fputs_filtered ("label domain, ", outfile);
919 fputs_filtered ("<invalid domain>, ", outfile);
922 switch (PSYMBOL_CLASS (*p))
925 fputs_filtered ("undefined", outfile);
928 fputs_filtered ("constant int", outfile);
931 fputs_filtered ("static", outfile);
934 fputs_filtered ("register", outfile);
937 fputs_filtered ("pass by value", outfile);
940 fputs_filtered ("pass by reference", outfile);
942 case LOC_REGPARM_ADDR:
943 fputs_filtered ("register address parameter", outfile);
946 fputs_filtered ("stack parameter", outfile);
949 fputs_filtered ("type", outfile);
952 fputs_filtered ("label", outfile);
955 fputs_filtered ("function", outfile);
957 case LOC_CONST_BYTES:
958 fputs_filtered ("constant bytes", outfile);
961 fputs_filtered ("unresolved", outfile);
963 case LOC_OPTIMIZED_OUT:
964 fputs_filtered ("optimized out", outfile);
967 fputs_filtered ("computed at runtime", outfile);
970 fputs_filtered ("<invalid location>", outfile);
973 fputs_filtered (", ", outfile);
974 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
975 fprintf_filtered (outfile, "\n");
981 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
982 struct ui_file *outfile)
984 struct gdbarch *gdbarch = get_objfile_arch (objfile);
987 if (psymtab->anonymous)
989 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
994 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
997 fprintf_filtered (outfile, "(object ");
998 gdb_print_host_address (psymtab, outfile);
999 fprintf_filtered (outfile, ")\n\n");
1000 fprintf_unfiltered (outfile, " Read from object file %s (",
1001 objfile_name (objfile));
1002 gdb_print_host_address (objfile, outfile);
1003 fprintf_unfiltered (outfile, ")\n");
1005 if (psymtab->readin)
1007 fprintf_filtered (outfile,
1008 " Full symtab was read (at ");
1009 gdb_print_host_address (psymtab->compunit_symtab, outfile);
1010 fprintf_filtered (outfile, " by function at ");
1011 gdb_print_host_address (psymtab->read_symtab, outfile);
1012 fprintf_filtered (outfile, ")\n");
1015 fprintf_filtered (outfile, " Relocate symbols by ");
1016 for (i = 0; i < objfile->num_sections; ++i)
1019 fprintf_filtered (outfile, ", ");
1021 fputs_filtered (paddress (gdbarch,
1022 ANOFFSET (psymtab->section_offsets, i)),
1025 fprintf_filtered (outfile, "\n");
1027 fprintf_filtered (outfile, " Symbols cover text addresses ");
1028 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
1029 fprintf_filtered (outfile, "-");
1030 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
1031 fprintf_filtered (outfile, "\n");
1032 fprintf_filtered (outfile, " Address map supported - %s.\n",
1033 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
1034 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
1035 psymtab->number_of_dependencies);
1036 for (i = 0; i < psymtab->number_of_dependencies; i++)
1038 fprintf_filtered (outfile, " %d ", i);
1039 gdb_print_host_address (psymtab->dependencies[i], outfile);
1040 fprintf_filtered (outfile, " %s\n",
1041 psymtab->dependencies[i]->filename);
1043 if (psymtab->user != NULL)
1045 fprintf_filtered (outfile, " Shared partial symtab with user ");
1046 gdb_print_host_address (psymtab->user, outfile);
1047 fprintf_filtered (outfile, "\n");
1049 if (psymtab->n_global_syms > 0)
1051 print_partial_symbols (gdbarch,
1052 objfile->global_psymbols.list
1053 + psymtab->globals_offset,
1054 psymtab->n_global_syms, "Global", outfile);
1056 if (psymtab->n_static_syms > 0)
1058 print_partial_symbols (gdbarch,
1059 objfile->static_psymbols.list
1060 + psymtab->statics_offset,
1061 psymtab->n_static_syms, "Static", outfile);
1063 fprintf_filtered (outfile, "\n");
1066 /* Psymtab version of print_stats. See its definition in
1067 the definition of quick_symbol_functions in symfile.h. */
1070 psym_print_stats (struct objfile *objfile)
1073 struct partial_symtab *ps;
1076 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1078 if (ps->readin == 0)
1081 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1084 /* Psymtab version of dump. See its definition in
1085 the definition of quick_symbol_functions in symfile.h. */
1088 psym_dump (struct objfile *objfile)
1090 struct partial_symtab *psymtab;
1092 if (objfile->psymtabs)
1094 printf_filtered ("Psymtabs:\n");
1095 for (psymtab = objfile->psymtabs;
1097 psymtab = psymtab->next)
1099 printf_filtered ("%s at ",
1101 gdb_print_host_address (psymtab, gdb_stdout);
1102 printf_filtered (", ");
1105 printf_filtered ("\n\n");
1109 /* Psymtab version of expand_symtabs_for_function. See its definition in
1110 the definition of quick_symbol_functions in symfile.h. */
1113 psym_expand_symtabs_for_function (struct objfile *objfile,
1114 const char *func_name)
1116 struct partial_symtab *ps;
1118 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1123 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1125 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1127 psymtab_to_symtab (objfile, ps);
1131 /* Psymtab version of expand_all_symtabs. See its definition in
1132 the definition of quick_symbol_functions in symfile.h. */
1135 psym_expand_all_symtabs (struct objfile *objfile)
1137 struct partial_symtab *psymtab;
1139 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1141 psymtab_to_symtab (objfile, psymtab);
1145 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1146 the definition of quick_symbol_functions in symfile.h. */
1149 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1150 const char *fullname)
1152 struct partial_symtab *p;
1154 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1156 /* Anonymous psymtabs don't have a name of a source file. */
1160 /* psymtab_to_fullname tries to open the file which is slow.
1161 Don't call it if we know the basenames don't match. */
1162 if ((basenames_may_differ
1163 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1164 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1165 psymtab_to_symtab (objfile, p);
1169 /* Psymtab version of map_symbol_filenames. See its definition in
1170 the definition of quick_symbol_functions in symfile.h. */
1173 psym_map_symbol_filenames (struct objfile *objfile,
1174 symbol_filename_ftype *fun, void *data,
1177 struct partial_symtab *ps;
1179 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1181 const char *fullname;
1186 /* We can skip shared psymtabs here, because any file name will be
1187 attached to the unshared psymtab. */
1188 if (ps->user != NULL)
1191 /* Anonymous psymtabs don't have a file name. */
1197 fullname = psymtab_to_fullname (ps);
1200 (*fun) (ps->filename, fullname, data);
1204 /* Finds the fullname that a partial_symtab represents.
1206 If this functions finds the fullname, it will save it in ps->fullname
1207 and it will also return the value.
1209 If this function fails to find the file that this partial_symtab represents,
1210 NULL will be returned and ps->fullname will be set to NULL. */
1213 psymtab_to_fullname (struct partial_symtab *ps)
1215 gdb_assert (!ps->anonymous);
1217 /* Use cached copy if we have it.
1218 We rely on forget_cached_source_info being called appropriately
1219 to handle cases like the file being moved. */
1220 if (ps->fullname == NULL)
1222 int fd = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
1229 struct cleanup *back_to;
1231 /* rewrite_source_path would be applied by find_and_open_source, we
1232 should report the pathname where GDB tried to find the file. */
1234 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1235 fullname = xstrdup (ps->filename);
1237 fullname = concat (ps->dirname, SLASH_STRING, ps->filename, NULL);
1239 back_to = make_cleanup (xfree, fullname);
1240 ps->fullname = rewrite_source_path (fullname);
1241 if (ps->fullname == NULL)
1242 ps->fullname = xstrdup (fullname);
1243 do_cleanups (back_to);
1247 return ps->fullname;
1250 /* For all symbols, s, in BLOCK that are in NAMESPACE and match NAME
1251 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1252 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1253 ever returns non-zero, and otherwise returns 0. */
1256 map_block (const char *name, domain_enum namespace, struct objfile *objfile,
1257 struct block *block,
1258 int (*callback) (struct block *, struct symbol *, void *),
1259 void *data, symbol_compare_ftype *match)
1261 struct block_iterator iter;
1264 for (sym = block_iter_match_first (block, name, match, &iter);
1265 sym != NULL; sym = block_iter_match_next (name, match, &iter))
1267 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1268 SYMBOL_DOMAIN (sym), namespace))
1270 if (callback (block, sym, data))
1278 /* Psymtab version of map_matching_symbols. See its definition in
1279 the definition of quick_symbol_functions in symfile.h. */
1282 psym_map_matching_symbols (struct objfile *objfile,
1283 const char *name, domain_enum namespace,
1285 int (*callback) (struct block *,
1286 struct symbol *, void *),
1288 symbol_compare_ftype *match,
1289 symbol_compare_ftype *ordered_compare)
1291 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1292 struct partial_symtab *ps;
1294 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1298 || match_partial_symbol (objfile, ps, global, name, namespace, match,
1301 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1302 struct block *block;
1306 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1307 if (map_block (name, namespace, objfile, block,
1308 callback, data, match))
1310 if (callback (block, NULL, data))
1316 /* A helper for psym_expand_symtabs_matching that handles
1317 searching included psymtabs. This returns 1 if a symbol is found,
1318 and zero otherwise. It also updates the 'searched_flag' on the
1319 various psymtabs that it searches. */
1322 recursively_search_psymtabs (struct partial_symtab *ps,
1323 struct objfile *objfile,
1324 enum search_domain kind,
1325 expand_symtabs_symbol_matcher_ftype *sym_matcher,
1328 struct partial_symbol **psym;
1329 struct partial_symbol **bound, **gbound, **sbound;
1331 int result = PST_SEARCHED_AND_NOT_FOUND;
1334 if (ps->searched_flag != PST_NOT_SEARCHED)
1335 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1337 /* Recurse into shared psymtabs first, because they may have already
1338 been searched, and this could save some time. */
1339 for (i = 0; i < ps->number_of_dependencies; ++i)
1343 /* Skip non-shared dependencies, these are handled elsewhere. */
1344 if (ps->dependencies[i]->user == NULL)
1347 r = recursively_search_psymtabs (ps->dependencies[i],
1348 objfile, kind, sym_matcher, data);
1351 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1356 gbound = (objfile->global_psymbols.list
1357 + ps->globals_offset + ps->n_global_syms);
1358 sbound = (objfile->static_psymbols.list
1359 + ps->statics_offset + ps->n_static_syms);
1362 /* Go through all of the symbols stored in a partial
1363 symtab in one loop. */
1364 psym = objfile->global_psymbols.list + ps->globals_offset;
1369 if (bound == gbound && ps->n_static_syms != 0)
1371 psym = objfile->static_psymbols.list + ps->statics_offset;
1382 if ((kind == ALL_DOMAIN
1383 || (kind == VARIABLES_DOMAIN
1384 && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF
1385 && PSYMBOL_CLASS (*psym) != LOC_BLOCK)
1386 || (kind == FUNCTIONS_DOMAIN
1387 && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
1388 || (kind == TYPES_DOMAIN
1389 && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
1390 && (*sym_matcher) (SYMBOL_SEARCH_NAME (*psym), data))
1392 /* Found a match, so notify our caller. */
1393 result = PST_SEARCHED_AND_FOUND;
1400 ps->searched_flag = result;
1401 return result == PST_SEARCHED_AND_FOUND;
1404 /* Psymtab version of expand_symtabs_matching. See its definition in
1405 the definition of quick_symbol_functions in symfile.h. */
1408 psym_expand_symtabs_matching
1409 (struct objfile *objfile,
1410 expand_symtabs_file_matcher_ftype *file_matcher,
1411 expand_symtabs_symbol_matcher_ftype *symbol_matcher,
1412 enum search_domain kind,
1415 struct partial_symtab *ps;
1417 /* Clear the search flags. */
1418 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1420 ps->searched_flag = PST_NOT_SEARCHED;
1423 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1428 /* We skip shared psymtabs because file-matching doesn't apply
1429 to them; but we search them later in the loop. */
1430 if (ps->user != NULL)
1440 match = (*file_matcher) (ps->filename, data, 0);
1443 /* Before we invoke realpath, which can get expensive when many
1444 files are involved, do a quick comparison of the basenames. */
1445 if (basenames_may_differ
1446 || (*file_matcher) (lbasename (ps->filename), data, 1))
1447 match = (*file_matcher) (psymtab_to_fullname (ps), data, 0);
1453 if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher, data))
1454 psymtab_to_symtab (objfile, ps);
1458 /* Psymtab version of has_symbols. See its definition in
1459 the definition of quick_symbol_functions in symfile.h. */
1462 psym_has_symbols (struct objfile *objfile)
1464 return objfile->psymtabs != NULL;
1467 const struct quick_symbol_functions psym_functions =
1470 psym_find_last_source_symtab,
1471 psym_forget_cached_source_info,
1472 psym_map_symtabs_matching_filename,
1477 psym_expand_symtabs_for_function,
1478 psym_expand_all_symtabs,
1479 psym_expand_symtabs_with_fullname,
1480 psym_map_matching_symbols,
1481 psym_expand_symtabs_matching,
1482 psym_find_pc_sect_compunit_symtab,
1483 psym_map_symbol_filenames
1488 /* This compares two partial symbols by names, using strcmp_iw_ordered
1489 for the comparison. */
1492 compare_psymbols (const void *s1p, const void *s2p)
1494 struct partial_symbol *const *s1 = s1p;
1495 struct partial_symbol *const *s2 = s2p;
1497 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
1498 SYMBOL_SEARCH_NAME (*s2));
1502 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1504 /* Sort the global list; don't sort the static list. */
1506 qsort (objfile->global_psymbols.list + pst->globals_offset,
1507 pst->n_global_syms, sizeof (struct partial_symbol *),
1511 /* Allocate and partially fill a partial symtab. It will be
1512 completely filled at the end of the symbol list.
1514 FILENAME is the name of the symbol-file we are reading from. */
1516 struct partial_symtab *
1517 start_psymtab_common (struct objfile *objfile,
1518 struct section_offsets *section_offsets,
1519 const char *filename,
1520 CORE_ADDR textlow, struct partial_symbol **global_syms,
1521 struct partial_symbol **static_syms)
1523 struct partial_symtab *psymtab;
1525 psymtab = allocate_psymtab (filename, objfile);
1526 psymtab->section_offsets = section_offsets;
1527 psymtab->textlow = textlow;
1528 psymtab->texthigh = psymtab->textlow; /* default */
1529 psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
1530 psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
1534 /* Calculate a hash code for the given partial symbol. The hash is
1535 calculated using the symbol's value, language, domain, class
1536 and name. These are the values which are set by
1537 add_psymbol_to_bcache. */
1539 static unsigned long
1540 psymbol_hash (const void *addr, int length)
1542 unsigned long h = 0;
1543 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1544 unsigned int lang = psymbol->ginfo.language;
1545 unsigned int domain = PSYMBOL_DOMAIN (psymbol);
1546 unsigned int class = PSYMBOL_CLASS (psymbol);
1548 h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
1549 h = hash_continue (&lang, sizeof (unsigned int), h);
1550 h = hash_continue (&domain, sizeof (unsigned int), h);
1551 h = hash_continue (&class, sizeof (unsigned int), h);
1552 h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
1557 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1558 For the comparison this function uses a symbols value,
1559 language, domain, class and name. */
1562 psymbol_compare (const void *addr1, const void *addr2, int length)
1564 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1565 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1567 return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value,
1568 sizeof (sym1->ginfo.value)) == 0
1569 && sym1->ginfo.language == sym2->ginfo.language
1570 && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
1571 && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
1572 && sym1->ginfo.name == sym2->ginfo.name);
1575 /* Initialize a partial symbol bcache. */
1577 struct psymbol_bcache *
1578 psymbol_bcache_init (void)
1580 struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
1581 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1585 /* Free a partial symbol bcache. */
1587 psymbol_bcache_free (struct psymbol_bcache *bcache)
1592 bcache_xfree (bcache->bcache);
1596 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1599 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1601 return bcache->bcache;
1604 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1605 symbol before, add a copy to BCACHE. In either case, return a pointer
1606 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1607 1 in case of new entry or 0 if returning an old entry. */
1609 static const struct partial_symbol *
1610 psymbol_bcache_full (struct partial_symbol *sym,
1611 struct psymbol_bcache *bcache,
1614 return bcache_full (sym,
1615 sizeof (struct partial_symbol),
1620 /* Helper function, initialises partial symbol structure and stashes
1621 it into objfile's bcache. Note that our caching mechanism will
1622 use all fields of struct partial_symbol to determine hash value of the
1623 structure. In other words, having two symbols with the same name but
1624 different domain (or address) is possible and correct. */
1626 static const struct partial_symbol *
1627 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1629 enum address_class class,
1630 long val, /* Value as a long */
1631 CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
1632 enum language language, struct objfile *objfile,
1635 struct partial_symbol psymbol;
1637 /* We must ensure that the entire struct has been zeroed before
1638 assigning to it, because an assignment may not touch some of the
1640 memset (&psymbol, 0, sizeof (psymbol));
1642 /* val and coreaddr are mutually exclusive, one of them *will* be zero. */
1645 SYMBOL_VALUE (&psymbol) = val;
1649 SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
1651 SYMBOL_SECTION (&psymbol) = -1;
1652 SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack);
1653 PSYMBOL_DOMAIN (&psymbol) = domain;
1654 PSYMBOL_CLASS (&psymbol) = class;
1656 SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
1658 /* Stash the partial symbol away in the cache. */
1659 return psymbol_bcache_full (&psymbol,
1660 objfile->psymbol_cache,
1664 /* Increase the space allocated for LISTP, which is probably
1665 global_psymbols or static_psymbols. This space will eventually
1666 be freed in free_objfile(). */
1669 extend_psymbol_list (struct psymbol_allocation_list *listp,
1670 struct objfile *objfile)
1674 if (listp->size == 0)
1677 listp->list = (struct partial_symbol **)
1678 xmalloc (new_size * sizeof (struct partial_symbol *));
1682 new_size = listp->size * 2;
1683 listp->list = (struct partial_symbol **)
1684 xrealloc ((char *) listp->list,
1685 new_size * sizeof (struct partial_symbol *));
1687 /* Next assumes we only went one over. Should be good if
1688 program works correctly. */
1689 listp->next = listp->list + listp->size;
1690 listp->size = new_size;
1693 /* Helper function, adds partial symbol to the given partial symbol
1697 append_psymbol_to_list (struct psymbol_allocation_list *list,
1698 const struct partial_symbol *psym,
1699 struct objfile *objfile)
1701 if (list->next >= list->list + list->size)
1702 extend_psymbol_list (list, objfile);
1703 *list->next++ = (struct partial_symbol *) psym;
1704 OBJSTAT (objfile, n_psyms++);
1707 /* Add a symbol with a long value to a psymtab.
1708 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1709 Return the partial symbol that has been added. */
1712 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1714 enum address_class class,
1715 struct psymbol_allocation_list *list,
1716 long val, /* Value as a long */
1717 CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
1718 enum language language, struct objfile *objfile)
1720 const struct partial_symbol *psym;
1724 /* Stash the partial symbol away in the cache. */
1725 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class,
1726 val, coreaddr, language, objfile, &added);
1728 /* Do not duplicate global partial symbols. */
1729 if (list == &objfile->global_psymbols
1733 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1734 append_psymbol_to_list (list, psym, objfile);
1737 /* Initialize storage for partial symbols. */
1740 init_psymbol_list (struct objfile *objfile, int total_symbols)
1742 /* Free any previously allocated psymbol lists. */
1744 if (objfile->global_psymbols.list)
1746 xfree (objfile->global_psymbols.list);
1748 if (objfile->static_psymbols.list)
1750 xfree (objfile->static_psymbols.list);
1753 /* Current best guess is that approximately a twentieth
1754 of the total symbols (in a debugging file) are global or static
1755 oriented symbols, then multiply that by slop factor of two. */
1757 objfile->global_psymbols.size = total_symbols / 10;
1758 objfile->static_psymbols.size = total_symbols / 10;
1760 if (objfile->global_psymbols.size > 0)
1762 objfile->global_psymbols.next =
1763 objfile->global_psymbols.list = (struct partial_symbol **)
1764 xmalloc ((objfile->global_psymbols.size
1765 * sizeof (struct partial_symbol *)));
1767 if (objfile->static_psymbols.size > 0)
1769 objfile->static_psymbols.next =
1770 objfile->static_psymbols.list = (struct partial_symbol **)
1771 xmalloc ((objfile->static_psymbols.size
1772 * sizeof (struct partial_symbol *)));
1776 struct partial_symtab *
1777 allocate_psymtab (const char *filename, struct objfile *objfile)
1779 struct partial_symtab *psymtab;
1781 if (objfile->free_psymtabs)
1783 psymtab = objfile->free_psymtabs;
1784 objfile->free_psymtabs = psymtab->next;
1787 psymtab = (struct partial_symtab *)
1788 obstack_alloc (&objfile->objfile_obstack,
1789 sizeof (struct partial_symtab));
1791 memset (psymtab, 0, sizeof (struct partial_symtab));
1792 psymtab->filename = bcache (filename, strlen (filename) + 1,
1793 objfile->per_bfd->filename_cache);
1794 psymtab->compunit_symtab = NULL;
1796 /* Prepend it to the psymtab list for the objfile it belongs to.
1797 Psymtabs are searched in most recent inserted -> least recent
1800 psymtab->next = objfile->psymtabs;
1801 objfile->psymtabs = psymtab;
1803 if (symtab_create_debug)
1805 /* Be a bit clever with debugging messages, and don't print objfile
1806 every time, only when it changes. */
1807 static char *last_objfile_name = NULL;
1809 if (last_objfile_name == NULL
1810 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1812 xfree (last_objfile_name);
1813 last_objfile_name = xstrdup (objfile_name (objfile));
1814 fprintf_unfiltered (gdb_stdlog,
1815 "Creating one or more psymtabs for objfile %s ...\n",
1818 fprintf_unfiltered (gdb_stdlog,
1819 "Created psymtab %s for module %s.\n",
1820 host_address_to_string (psymtab), filename);
1827 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1829 struct partial_symtab **prev_pst;
1832 Empty psymtabs happen as a result of header files which don't
1833 have any symbols in them. There can be a lot of them. But this
1834 check is wrong, in that a psymtab with N_SLINE entries but
1835 nothing else is not empty, but we don't realize that. Fixing
1836 that without slowing things down might be tricky. */
1838 /* First, snip it out of the psymtab chain. */
1840 prev_pst = &(objfile->psymtabs);
1841 while ((*prev_pst) != pst)
1842 prev_pst = &((*prev_pst)->next);
1843 (*prev_pst) = pst->next;
1845 /* Next, put it on a free list for recycling. */
1847 pst->next = objfile->free_psymtabs;
1848 objfile->free_psymtabs = pst;
1851 /* An object of this type is passed to discard_psymtabs_upto. */
1853 struct psymtab_state
1855 /* The objfile where psymtabs are discarded. */
1857 struct objfile *objfile;
1859 /* The first psymtab to save. */
1861 struct partial_symtab *save;
1864 /* A cleanup function used by make_cleanup_discard_psymtabs. */
1867 discard_psymtabs_upto (void *arg)
1869 struct psymtab_state *state = arg;
1871 while (state->objfile->psymtabs != state->save)
1872 discard_psymtab (state->objfile, state->objfile->psymtabs);
1875 /* Return a new cleanup that discards all psymtabs created in OBJFILE
1876 after this function is called. */
1879 make_cleanup_discard_psymtabs (struct objfile *objfile)
1881 struct psymtab_state *state = XNEW (struct psymtab_state);
1883 state->objfile = objfile;
1884 state->save = objfile->psymtabs;
1886 return make_cleanup_dtor (discard_psymtabs_upto, state, xfree);
1892 maintenance_print_psymbols (char *args, int from_tty)
1895 struct ui_file *outfile;
1896 struct cleanup *cleanups;
1897 char *symname = NULL;
1898 char *filename = DEV_TTY;
1899 struct objfile *objfile;
1900 struct partial_symtab *ps;
1907 print-psymbols takes an output file name and optional symbol file name"));
1909 argv = gdb_buildargv (args);
1910 cleanups = make_cleanup_freeargv (argv);
1912 if (argv[0] != NULL)
1915 /* If a second arg is supplied, it is a source file name to match on. */
1916 if (argv[1] != NULL)
1922 filename = tilde_expand (filename);
1923 make_cleanup (xfree, filename);
1925 outfile = gdb_fopen (filename, FOPEN_WT);
1927 perror_with_name (filename);
1928 make_cleanup_ui_file_delete (outfile);
1930 ALL_PSYMTABS (objfile, ps)
1933 if (symname == NULL || filename_cmp (symname, ps->filename) == 0)
1934 dump_psymtab (objfile, ps, outfile);
1936 do_cleanups (cleanups);
1939 /* List all the partial symbol tables whose names match REGEXP (optional). */
1941 maintenance_info_psymtabs (char *regexp, int from_tty)
1943 struct program_space *pspace;
1944 struct objfile *objfile;
1949 ALL_PSPACES (pspace)
1950 ALL_PSPACE_OBJFILES (pspace, objfile)
1952 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1953 struct partial_symtab *psymtab;
1955 /* We don't want to print anything for this objfile until we
1956 actually find a symtab whose name matches. */
1957 int printed_objfile_start = 0;
1959 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1964 || re_exec (psymtab->filename))
1966 if (! printed_objfile_start)
1968 printf_filtered ("{ objfile %s ", objfile_name (objfile));
1970 printf_filtered ("((struct objfile *) %s)\n",
1971 host_address_to_string (objfile));
1972 printed_objfile_start = 1;
1975 printf_filtered (" { psymtab %s ", psymtab->filename);
1977 printf_filtered ("((struct partial_symtab *) %s)\n",
1978 host_address_to_string (psymtab));
1980 printf_filtered (" readin %s\n",
1981 psymtab->readin ? "yes" : "no");
1982 printf_filtered (" fullname %s\n",
1984 ? psymtab->fullname : "(null)");
1985 printf_filtered (" text addresses ");
1986 fputs_filtered (paddress (gdbarch, psymtab->textlow),
1988 printf_filtered (" -- ");
1989 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
1991 printf_filtered ("\n");
1992 printf_filtered (" psymtabs_addrmap_supported %s\n",
1993 (psymtab->psymtabs_addrmap_supported
1995 printf_filtered (" globals ");
1996 if (psymtab->n_global_syms)
1998 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
1999 host_address_to_string (objfile->global_psymbols.list
2000 + psymtab->globals_offset),
2001 psymtab->n_global_syms);
2004 printf_filtered ("(none)\n");
2005 printf_filtered (" statics ");
2006 if (psymtab->n_static_syms)
2008 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2009 host_address_to_string (objfile->static_psymbols.list
2010 + psymtab->statics_offset),
2011 psymtab->n_static_syms);
2014 printf_filtered ("(none)\n");
2015 printf_filtered (" dependencies ");
2016 if (psymtab->number_of_dependencies)
2020 printf_filtered ("{\n");
2021 for (i = 0; i < psymtab->number_of_dependencies; i++)
2023 struct partial_symtab *dep = psymtab->dependencies[i];
2025 /* Note the string concatenation there --- no comma. */
2026 printf_filtered (" psymtab %s "
2027 "((struct partial_symtab *) %s)\n",
2029 host_address_to_string (dep));
2031 printf_filtered (" }\n");
2034 printf_filtered ("(none)\n");
2035 printf_filtered (" }\n");
2039 if (printed_objfile_start)
2040 printf_filtered ("}\n");
2044 /* Check consistency of currently expanded psymtabs vs symtabs. */
2047 maintenance_check_psymtabs (char *ignore, int from_tty)
2050 struct partial_symbol **psym;
2051 struct compunit_symtab *cust = NULL;
2052 struct partial_symtab *ps;
2053 const struct blockvector *bv;
2054 struct objfile *objfile;
2058 ALL_PSYMTABS (objfile, ps)
2060 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2062 /* We don't call psymtab_to_symtab here because that may cause symtab
2063 expansion. When debugging a problem it helps if checkers leave
2064 things unchanged. */
2065 cust = ps->compunit_symtab;
2067 /* First do some checks that don't require the associated symtab. */
2068 if (ps->texthigh < ps->textlow)
2070 printf_filtered ("Psymtab ");
2071 puts_filtered (ps->filename);
2072 printf_filtered (" covers bad range ");
2073 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2074 printf_filtered (" - ");
2075 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2076 printf_filtered ("\n");
2080 /* Now do checks requiring the associated symtab. */
2083 bv = COMPUNIT_BLOCKVECTOR (cust);
2084 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2085 psym = objfile->static_psymbols.list + ps->statics_offset;
2086 length = ps->n_static_syms;
2089 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2090 SYMBOL_DOMAIN (*psym));
2093 printf_filtered ("Static symbol `");
2094 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2095 printf_filtered ("' only found in ");
2096 puts_filtered (ps->filename);
2097 printf_filtered (" psymtab\n");
2101 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2102 psym = objfile->global_psymbols.list + ps->globals_offset;
2103 length = ps->n_global_syms;
2106 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2107 SYMBOL_DOMAIN (*psym));
2110 printf_filtered ("Global symbol `");
2111 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2112 printf_filtered ("' only found in ");
2113 puts_filtered (ps->filename);
2114 printf_filtered (" psymtab\n");
2118 if (ps->texthigh != 0
2119 && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)))
2121 printf_filtered ("Psymtab ");
2122 puts_filtered (ps->filename);
2123 printf_filtered (" covers ");
2124 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2125 printf_filtered (" - ");
2126 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2127 printf_filtered (" but symtab covers only ");
2128 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2129 printf_filtered (" - ");
2130 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2131 printf_filtered ("\n");
2138 extern initialize_file_ftype _initialize_psymtab;
2141 _initialize_psymtab (void)
2143 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2144 Print dump of current partial symbol definitions.\n\
2145 Entries in the partial symbol table are dumped to file OUTFILE.\n\
2146 If a SOURCE file is specified, dump only that file's partial symbols."),
2147 &maintenanceprintlist);
2149 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2150 List the partial symbol tables for all object files.\n\
2151 This does not include information about individual partial symbols,\n\
2152 just the symbol table structures themselves."),
2153 &maintenanceinfolist);
2155 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2157 Check consistency of currently expanded psymtabs versus symtabs."),