1 /* Partial symbol tables.
3 Copyright (C) 2009-2013 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/>. */
24 #include "gdb_assert.h"
26 #include "filenames.h"
33 #include "readline/readline.h"
34 #include "gdb_regex.h"
35 #include "dictionary.h"
37 #include "cp-support.h"
41 #define DEV_TTY "/dev/tty"
46 struct bcache *bcache;
49 static struct partial_symbol *match_partial_symbol (struct objfile *,
50 struct partial_symtab *,
52 const char *, domain_enum,
53 symbol_compare_ftype *,
54 symbol_compare_ftype *);
56 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
57 struct partial_symtab *,
61 static const char *psymtab_to_fullname (struct partial_symtab *ps);
63 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
64 struct partial_symtab *,
66 struct obj_section *);
68 static void fixup_psymbol_section (struct partial_symbol *psym,
69 struct objfile *objfile);
71 static struct symtab *psymtab_to_symtab (struct objfile *objfile,
72 struct partial_symtab *pst);
74 /* Ensure that the partial symbols for OBJFILE have been loaded. This
75 function always returns its argument, as a convenience. */
78 require_partial_symbols (struct objfile *objfile, int verbose)
80 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
82 objfile->flags |= OBJF_PSYMTABS_READ;
84 if (objfile->sf->sym_read_psymbols)
88 printf_unfiltered (_("Reading symbols from %s..."),
90 gdb_flush (gdb_stdout);
92 (*objfile->sf->sym_read_psymbols) (objfile);
95 if (!objfile_has_symbols (objfile))
98 printf_unfiltered (_("(no debugging symbols found)..."));
102 printf_unfiltered (_("done.\n"));
110 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
113 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
114 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
118 /* We want to make sure this file always requires psymtabs. */
120 #undef ALL_OBJFILE_PSYMTABS
122 /* Traverse all psymtabs in all objfiles. */
124 #define ALL_PSYMTABS(objfile, p) \
125 ALL_OBJFILES (objfile) \
126 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
128 /* Helper function for partial_map_symtabs_matching_filename that
129 expands the symtabs and calls the iterator. */
132 partial_map_expand_apply (struct objfile *objfile,
134 const char *real_path,
135 struct partial_symtab *pst,
136 int (*callback) (struct symtab *, void *),
139 struct symtab *last_made = objfile->symtabs;
141 /* Shared psymtabs should never be seen here. Instead they should
142 be handled properly by the caller. */
143 gdb_assert (pst->user == NULL);
145 /* Don't visit already-expanded psymtabs. */
149 /* This may expand more than one symtab, and we want to iterate over
151 psymtab_to_symtab (objfile, pst);
153 return iterate_over_some_symtabs (name, real_path, callback, data,
154 objfile->symtabs, last_made);
157 /* Implementation of the map_symtabs_matching_filename method. */
160 partial_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 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. */
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 == SYMBOL_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 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 && 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 != SYMBOL_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 static struct symtab *
375 find_pc_sect_symtab_from_partial (struct objfile *objfile,
376 struct minimal_symbol *msymbol,
377 CORE_ADDR pc, struct obj_section *section,
380 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
384 if (warn_if_readin && ps->readin)
385 /* Might want to error() here (in case symtab is corrupt and
386 will cause a core dump), but maybe we can successfully
387 continue, so let's not. */
389 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
390 paddress (get_objfile_arch (objfile), pc));
391 psymtab_to_symtab (objfile, ps);
397 /* Find which partial symbol within a psymtab matches PC and SECTION.
400 static struct partial_symbol *
401 find_pc_sect_psymbol (struct objfile *objfile,
402 struct partial_symtab *psymtab, CORE_ADDR pc,
403 struct obj_section *section)
405 struct partial_symbol *best = NULL, *p, **pp;
408 gdb_assert (psymtab != NULL);
410 /* Cope with programs that start at address 0. */
411 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
413 /* Search the global symbols as well as the static symbols, so that
414 find_pc_partial_function doesn't use a minimal symbol and thus
415 cache a bad endaddr. */
416 for (pp = objfile->global_psymbols.list + psymtab->globals_offset;
417 (pp - (objfile->global_psymbols.list + psymtab->globals_offset)
418 < psymtab->n_global_syms);
422 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
423 && PSYMBOL_CLASS (p) == LOC_BLOCK
424 && pc >= SYMBOL_VALUE_ADDRESS (p)
425 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
426 || (psymtab->textlow == 0
427 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
429 if (section) /* Match on a specific section. */
431 fixup_psymbol_section (p, objfile);
432 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
436 best_pc = SYMBOL_VALUE_ADDRESS (p);
441 for (pp = objfile->static_psymbols.list + psymtab->statics_offset;
442 (pp - (objfile->static_psymbols.list + psymtab->statics_offset)
443 < psymtab->n_static_syms);
447 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
448 && PSYMBOL_CLASS (p) == LOC_BLOCK
449 && pc >= SYMBOL_VALUE_ADDRESS (p)
450 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
451 || (psymtab->textlow == 0
452 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
454 if (section) /* Match on a specific section. */
456 fixup_psymbol_section (p, objfile);
457 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
461 best_pc = SYMBOL_VALUE_ADDRESS (p);
470 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
477 if (SYMBOL_SECTION (psym) >= 0)
480 gdb_assert (objfile);
482 switch (PSYMBOL_CLASS (psym))
487 addr = SYMBOL_VALUE_ADDRESS (psym);
490 /* Nothing else will be listed in the minsyms -- no use looking
495 fixup_section (&psym->ginfo, addr, objfile);
498 static struct symtab *
499 lookup_symbol_aux_psymtabs (struct objfile *objfile,
500 int block_index, const char *name,
501 const domain_enum domain)
503 struct partial_symtab *ps;
504 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
505 struct symtab *stab_best = NULL;
507 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
509 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
510 psymtab_index, domain))
512 struct symbol *sym = NULL;
513 struct symtab *stab = psymtab_to_symtab (objfile, ps);
515 /* Some caution must be observed with overloaded functions
516 and methods, since the psymtab will not contain any overload
517 information (but NAME might contain it). */
520 struct blockvector *bv = BLOCKVECTOR (stab);
521 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
523 sym = lookup_block_symbol (block, name, domain);
526 if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0)
528 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
534 /* Keep looking through other psymtabs. */
541 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
542 the global block of PST if GLOBAL, and otherwise the static block.
543 MATCH is the comparison operation that returns true iff MATCH (s,
544 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
545 non-null, the symbols in the block are assumed to be ordered
546 according to it (allowing binary search). It must be compatible
547 with MATCH. Returns the symbol, if found, and otherwise NULL. */
549 static struct partial_symbol *
550 match_partial_symbol (struct objfile *objfile,
551 struct partial_symtab *pst, int global,
552 const char *name, domain_enum domain,
553 symbol_compare_ftype *match,
554 symbol_compare_ftype *ordered_compare)
556 struct partial_symbol **start, **psym;
557 struct partial_symbol **top, **real_top, **bottom, **center;
558 int length = (global ? pst->n_global_syms : pst->n_static_syms);
559 int do_linear_search = 1;
564 objfile->global_psymbols.list + pst->globals_offset :
565 objfile->static_psymbols.list + pst->statics_offset);
567 if (global && ordered_compare) /* Can use a binary search. */
569 do_linear_search = 0;
571 /* Binary search. This search is guaranteed to end with center
572 pointing at the earliest partial symbol whose name might be
573 correct. At that point *all* partial symbols with an
574 appropriate name will be checked against the correct
578 top = start + length - 1;
582 center = bottom + (top - bottom) / 2;
583 gdb_assert (center < top);
584 if (!do_linear_search
585 && (SYMBOL_LANGUAGE (*center) == language_java))
586 do_linear_search = 1;
587 if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
592 gdb_assert (top == bottom);
594 while (top <= real_top
595 && match (SYMBOL_SEARCH_NAME (*top), name) == 0)
597 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
598 SYMBOL_DOMAIN (*top), domain))
604 /* Can't use a binary search or else we found during the binary search that
605 we should also do a linear search. */
607 if (do_linear_search)
609 for (psym = start; psym < start + length; psym++)
611 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
612 SYMBOL_DOMAIN (*psym), domain)
613 && match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
621 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
622 not contain any method/function instance information (since this would
623 force reading type information while reading psymtabs). Therefore,
624 if NAME contains overload information, it must be stripped before searching
627 The caller is responsible for freeing the return result. */
630 psymtab_search_name (const char *name)
632 switch (current_language->la_language)
637 if (strchr (name, '('))
639 char *ret = cp_remove_params (name);
651 return xstrdup (name);
654 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
655 Check the global symbols if GLOBAL, the static symbols if not. */
657 static struct partial_symbol *
658 lookup_partial_symbol (struct objfile *objfile,
659 struct partial_symtab *pst, const char *name,
660 int global, domain_enum domain)
662 struct partial_symbol **start, **psym;
663 struct partial_symbol **top, **real_top, **bottom, **center;
664 int length = (global ? pst->n_global_syms : pst->n_static_syms);
665 int do_linear_search = 1;
667 struct cleanup *cleanup;
674 search_name = psymtab_search_name (name);
675 cleanup = make_cleanup (xfree, search_name);
677 objfile->global_psymbols.list + pst->globals_offset :
678 objfile->static_psymbols.list + pst->statics_offset);
680 if (global) /* This means we can use a binary search. */
682 do_linear_search = 0;
684 /* Binary search. This search is guaranteed to end with center
685 pointing at the earliest partial symbol whose name might be
686 correct. At that point *all* partial symbols with an
687 appropriate name will be checked against the correct
691 top = start + length - 1;
695 center = bottom + (top - bottom) / 2;
697 internal_error (__FILE__, __LINE__,
698 _("failed internal consistency check"));
699 if (!do_linear_search
700 && SYMBOL_LANGUAGE (*center) == language_java)
702 do_linear_search = 1;
704 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center),
714 if (!(top == bottom))
715 internal_error (__FILE__, __LINE__,
716 _("failed internal consistency check"));
718 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
719 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
720 while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
723 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
726 while (top <= real_top && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
728 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
729 SYMBOL_DOMAIN (*top), domain))
731 do_cleanups (cleanup);
738 /* Can't use a binary search or else we found during the binary search that
739 we should also do a linear search. */
741 if (do_linear_search)
743 for (psym = start; psym < start + length; psym++)
745 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
746 SYMBOL_DOMAIN (*psym), domain)
747 && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name))
749 do_cleanups (cleanup);
755 do_cleanups (cleanup);
759 /* Get the symbol table that corresponds to a partial_symtab.
760 This is fast after the first time you do it. */
762 static struct symtab *
763 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
765 /* If it is a shared psymtab, find an unshared psymtab that includes
766 it. Any such psymtab will do. */
767 while (pst->user != NULL)
770 /* If it's been looked up before, return it. */
774 /* If it has not yet been read in, read it. */
777 struct cleanup *back_to = increment_reading_symtab ();
779 (*pst->read_symtab) (pst, objfile);
780 do_cleanups (back_to);
787 relocate_psymtabs (struct objfile *objfile,
788 const struct section_offsets *new_offsets,
789 const struct section_offsets *delta)
791 struct partial_symbol **psym;
792 struct partial_symtab *p;
794 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
796 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
797 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
800 for (psym = objfile->global_psymbols.list;
801 psym < objfile->global_psymbols.next;
804 fixup_psymbol_section (*psym, objfile);
805 if (SYMBOL_SECTION (*psym) >= 0)
806 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
807 SYMBOL_SECTION (*psym));
809 for (psym = objfile->static_psymbols.list;
810 psym < objfile->static_psymbols.next;
813 fixup_psymbol_section (*psym, objfile);
814 if (SYMBOL_SECTION (*psym) >= 0)
815 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
816 SYMBOL_SECTION (*psym));
820 static struct symtab *
821 find_last_source_symtab_from_partial (struct objfile *ofp)
823 struct partial_symtab *ps;
824 struct partial_symtab *cs_pst = 0;
826 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
828 const char *name = ps->filename;
829 int len = strlen (name);
831 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
832 || strcmp (name, "<<C++-namespaces>>") == 0)))
840 internal_error (__FILE__, __LINE__,
841 _("select_source_symtab: "
842 "readin pst found and no symtabs."));
845 return psymtab_to_symtab (ofp, cs_pst);
851 forget_cached_source_info_partial (struct objfile *objfile)
853 struct partial_symtab *pst;
855 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
857 if (pst->fullname != NULL)
859 xfree (pst->fullname);
860 pst->fullname = NULL;
866 print_partial_symbols (struct gdbarch *gdbarch,
867 struct partial_symbol **p, int count, char *what,
868 struct ui_file *outfile)
870 fprintf_filtered (outfile, " %s partial symbols:\n", what);
874 fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
875 if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
877 fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
879 fputs_filtered (", ", outfile);
880 switch (SYMBOL_DOMAIN (*p))
883 fputs_filtered ("undefined domain, ", outfile);
886 /* This is the usual thing -- don't print it. */
889 fputs_filtered ("struct domain, ", outfile);
892 fputs_filtered ("label domain, ", outfile);
895 fputs_filtered ("<invalid domain>, ", outfile);
898 switch (PSYMBOL_CLASS (*p))
901 fputs_filtered ("undefined", outfile);
904 fputs_filtered ("constant int", outfile);
907 fputs_filtered ("static", outfile);
910 fputs_filtered ("register", outfile);
913 fputs_filtered ("pass by value", outfile);
916 fputs_filtered ("pass by reference", outfile);
918 case LOC_REGPARM_ADDR:
919 fputs_filtered ("register address parameter", outfile);
922 fputs_filtered ("stack parameter", outfile);
925 fputs_filtered ("type", outfile);
928 fputs_filtered ("label", outfile);
931 fputs_filtered ("function", outfile);
933 case LOC_CONST_BYTES:
934 fputs_filtered ("constant bytes", outfile);
937 fputs_filtered ("unresolved", outfile);
939 case LOC_OPTIMIZED_OUT:
940 fputs_filtered ("optimized out", outfile);
943 fputs_filtered ("computed at runtime", outfile);
946 fputs_filtered ("<invalid location>", outfile);
949 fputs_filtered (", ", outfile);
950 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
951 fprintf_filtered (outfile, "\n");
957 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
958 struct ui_file *outfile)
960 struct gdbarch *gdbarch = get_objfile_arch (objfile);
963 if (psymtab->anonymous)
965 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
970 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
973 fprintf_filtered (outfile, "(object ");
974 gdb_print_host_address (psymtab, outfile);
975 fprintf_filtered (outfile, ")\n\n");
976 fprintf_unfiltered (outfile, " Read from object file %s (",
978 gdb_print_host_address (objfile, outfile);
979 fprintf_unfiltered (outfile, ")\n");
983 fprintf_filtered (outfile,
984 " Full symtab was read (at ");
985 gdb_print_host_address (psymtab->symtab, outfile);
986 fprintf_filtered (outfile, " by function at ");
987 gdb_print_host_address (psymtab->read_symtab, outfile);
988 fprintf_filtered (outfile, ")\n");
991 fprintf_filtered (outfile, " Relocate symbols by ");
992 for (i = 0; i < objfile->num_sections; ++i)
995 fprintf_filtered (outfile, ", ");
997 fputs_filtered (paddress (gdbarch,
998 ANOFFSET (psymtab->section_offsets, i)),
1001 fprintf_filtered (outfile, "\n");
1003 fprintf_filtered (outfile, " Symbols cover text addresses ");
1004 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
1005 fprintf_filtered (outfile, "-");
1006 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
1007 fprintf_filtered (outfile, "\n");
1008 fprintf_filtered (outfile, " Address map supported - %s.\n",
1009 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
1010 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
1011 psymtab->number_of_dependencies);
1012 for (i = 0; i < psymtab->number_of_dependencies; i++)
1014 fprintf_filtered (outfile, " %d ", i);
1015 gdb_print_host_address (psymtab->dependencies[i], outfile);
1016 fprintf_filtered (outfile, " %s\n",
1017 psymtab->dependencies[i]->filename);
1019 if (psymtab->user != NULL)
1021 fprintf_filtered (outfile, " Shared partial symtab with user ");
1022 gdb_print_host_address (psymtab->user, outfile);
1023 fprintf_filtered (outfile, "\n");
1025 if (psymtab->n_global_syms > 0)
1027 print_partial_symbols (gdbarch,
1028 objfile->global_psymbols.list
1029 + psymtab->globals_offset,
1030 psymtab->n_global_syms, "Global", outfile);
1032 if (psymtab->n_static_syms > 0)
1034 print_partial_symbols (gdbarch,
1035 objfile->static_psymbols.list
1036 + psymtab->statics_offset,
1037 psymtab->n_static_syms, "Static", outfile);
1039 fprintf_filtered (outfile, "\n");
1043 print_psymtab_stats_for_objfile (struct objfile *objfile)
1046 struct partial_symtab *ps;
1049 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1051 if (ps->readin == 0)
1054 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1058 dump_psymtabs_for_objfile (struct objfile *objfile)
1060 struct partial_symtab *psymtab;
1062 if (objfile->psymtabs)
1064 printf_filtered ("Psymtabs:\n");
1065 for (psymtab = objfile->psymtabs;
1067 psymtab = psymtab->next)
1069 printf_filtered ("%s at ",
1071 gdb_print_host_address (psymtab, gdb_stdout);
1072 printf_filtered (", ");
1075 printf_filtered ("\n\n");
1079 /* Look through the partial symtabs for all symbols which begin
1080 by matching FUNC_NAME. Make sure we read that symbol table in. */
1083 read_symtabs_for_function (struct objfile *objfile, const char *func_name)
1085 struct partial_symtab *ps;
1087 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1092 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1094 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1096 psymtab_to_symtab (objfile, ps);
1101 expand_partial_symbol_tables (struct objfile *objfile)
1103 struct partial_symtab *psymtab;
1105 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1107 psymtab_to_symtab (objfile, psymtab);
1112 read_psymtabs_with_fullname (struct objfile *objfile, const char *fullname)
1114 struct partial_symtab *p;
1116 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1118 /* Anonymous psymtabs don't have a name of a source file. */
1122 /* psymtab_to_fullname tries to open the file which is slow.
1123 Don't call it if we know the basenames don't match. */
1124 if ((basenames_may_differ
1125 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1126 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1127 psymtab_to_symtab (objfile, p);
1132 map_symbol_filenames_psymtab (struct objfile *objfile,
1133 symbol_filename_ftype *fun, void *data,
1136 struct partial_symtab *ps;
1138 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1140 const char *fullname;
1145 /* We can skip shared psymtabs here, because any file name will be
1146 attached to the unshared psymtab. */
1147 if (ps->user != NULL)
1150 /* Anonymous psymtabs don't have a file name. */
1156 fullname = psymtab_to_fullname (ps);
1159 (*fun) (ps->filename, fullname, data);
1163 /* Finds the fullname that a partial_symtab represents.
1165 If this functions finds the fullname, it will save it in ps->fullname
1166 and it will also return the value.
1168 If this function fails to find the file that this partial_symtab represents,
1169 NULL will be returned and ps->fullname will be set to NULL. */
1172 psymtab_to_fullname (struct partial_symtab *ps)
1174 gdb_assert (!ps->anonymous);
1176 /* Use cached copy if we have it.
1177 We rely on forget_cached_source_info being called appropriately
1178 to handle cases like the file being moved. */
1179 if (ps->fullname == NULL)
1181 int fd = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
1188 struct cleanup *back_to;
1190 /* rewrite_source_path would be applied by find_and_open_source, we
1191 should report the pathname where GDB tried to find the file. */
1193 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1194 fullname = xstrdup (ps->filename);
1196 fullname = concat (ps->dirname, SLASH_STRING, ps->filename, NULL);
1198 back_to = make_cleanup (xfree, fullname);
1199 ps->fullname = rewrite_source_path (fullname);
1200 if (ps->fullname == NULL)
1201 ps->fullname = xstrdup (fullname);
1202 do_cleanups (back_to);
1206 return ps->fullname;
1210 find_symbol_file_from_partial (struct objfile *objfile, const char *name)
1212 struct partial_symtab *pst;
1214 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
1216 if (lookup_partial_symbol (objfile, pst, name, 1, VAR_DOMAIN))
1217 return pst->filename;
1222 /* For all symbols, s, in BLOCK that are in NAMESPACE and match NAME
1223 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1224 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1225 ever returns non-zero, and otherwise returns 0. */
1228 map_block (const char *name, domain_enum namespace, struct objfile *objfile,
1229 struct block *block,
1230 int (*callback) (struct block *, struct symbol *, void *),
1231 void *data, symbol_compare_ftype *match)
1233 struct block_iterator iter;
1236 for (sym = block_iter_match_first (block, name, match, &iter);
1237 sym != NULL; sym = block_iter_match_next (name, match, &iter))
1239 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1240 SYMBOL_DOMAIN (sym), namespace))
1242 if (callback (block, sym, data))
1250 /* Psymtab version of map_matching_symbols. See its definition in
1251 the definition of quick_symbol_functions in symfile.h. */
1254 map_matching_symbols_psymtab (const char *name, domain_enum namespace,
1255 struct objfile *objfile, int global,
1256 int (*callback) (struct block *,
1257 struct symbol *, void *),
1259 symbol_compare_ftype *match,
1260 symbol_compare_ftype *ordered_compare)
1262 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1263 struct partial_symtab *ps;
1265 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1269 || match_partial_symbol (objfile, ps, global, name, namespace, match,
1272 struct symtab *s = psymtab_to_symtab (objfile, ps);
1273 struct block *block;
1275 if (s == NULL || !s->primary)
1277 block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), block_kind);
1278 if (map_block (name, namespace, objfile, block,
1279 callback, data, match))
1281 if (callback (block, NULL, data))
1287 /* A helper for expand_symtabs_matching_via_partial that handles
1288 searching included psymtabs. This returns 1 if a symbol is found,
1289 and zero otherwise. It also updates the 'searched_flag' on the
1290 various psymtabs that it searches. */
1293 recursively_search_psymtabs (struct partial_symtab *ps,
1294 struct objfile *objfile,
1295 enum search_domain kind,
1296 int (*name_matcher) (const char *, void *),
1299 struct partial_symbol **psym;
1300 struct partial_symbol **bound, **gbound, **sbound;
1302 int result = PST_SEARCHED_AND_NOT_FOUND;
1305 if (ps->searched_flag != PST_NOT_SEARCHED)
1306 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1308 /* Recurse into shared psymtabs first, because they may have already
1309 been searched, and this could save some time. */
1310 for (i = 0; i < ps->number_of_dependencies; ++i)
1314 /* Skip non-shared dependencies, these are handled elsewhere. */
1315 if (ps->dependencies[i]->user == NULL)
1318 r = recursively_search_psymtabs (ps->dependencies[i],
1319 objfile, kind, name_matcher, data);
1322 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1327 gbound = (objfile->global_psymbols.list
1328 + ps->globals_offset + ps->n_global_syms);
1329 sbound = (objfile->static_psymbols.list
1330 + ps->statics_offset + ps->n_static_syms);
1333 /* Go through all of the symbols stored in a partial
1334 symtab in one loop. */
1335 psym = objfile->global_psymbols.list + ps->globals_offset;
1340 if (bound == gbound && ps->n_static_syms != 0)
1342 psym = objfile->static_psymbols.list + ps->statics_offset;
1353 if ((kind == ALL_DOMAIN
1354 || (kind == VARIABLES_DOMAIN
1355 && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF
1356 && PSYMBOL_CLASS (*psym) != LOC_BLOCK)
1357 || (kind == FUNCTIONS_DOMAIN
1358 && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
1359 || (kind == TYPES_DOMAIN
1360 && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
1361 && (*name_matcher) (SYMBOL_SEARCH_NAME (*psym), data))
1363 /* Found a match, so notify our caller. */
1364 result = PST_SEARCHED_AND_FOUND;
1371 ps->searched_flag = result;
1372 return result == PST_SEARCHED_AND_FOUND;
1376 expand_symtabs_matching_via_partial
1377 (struct objfile *objfile,
1378 int (*file_matcher) (const char *, void *, int basenames),
1379 int (*name_matcher) (const char *, void *),
1380 enum search_domain kind,
1383 struct partial_symtab *ps;
1385 /* Clear the search flags. */
1386 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1388 ps->searched_flag = PST_NOT_SEARCHED;
1391 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1396 /* We skip shared psymtabs because file-matching doesn't apply
1397 to them; but we search them later in the loop. */
1398 if (ps->user != NULL)
1406 /* Before we invoke realpath, which can get expensive when many
1407 files are involved, do a quick comparison of the basenames. */
1408 if (!(*file_matcher) (ps->filename, data, 0)
1409 && (basenames_may_differ
1410 || (*file_matcher) (lbasename (ps->filename), data, 1))
1411 && !(*file_matcher) (psymtab_to_fullname (ps), data, 0))
1415 if (recursively_search_psymtabs (ps, objfile, kind, name_matcher, data))
1416 psymtab_to_symtab (objfile, ps);
1421 objfile_has_psyms (struct objfile *objfile)
1423 return objfile->psymtabs != NULL;
1426 const struct quick_symbol_functions psym_functions =
1429 find_last_source_symtab_from_partial,
1430 forget_cached_source_info_partial,
1431 partial_map_symtabs_matching_filename,
1432 lookup_symbol_aux_psymtabs,
1433 print_psymtab_stats_for_objfile,
1434 dump_psymtabs_for_objfile,
1436 read_symtabs_for_function,
1437 expand_partial_symbol_tables,
1438 read_psymtabs_with_fullname,
1439 find_symbol_file_from_partial,
1440 map_matching_symbols_psymtab,
1441 expand_symtabs_matching_via_partial,
1442 find_pc_sect_symtab_from_partial,
1443 map_symbol_filenames_psymtab
1448 /* This compares two partial symbols by names, using strcmp_iw_ordered
1449 for the comparison. */
1452 compare_psymbols (const void *s1p, const void *s2p)
1454 struct partial_symbol *const *s1 = s1p;
1455 struct partial_symbol *const *s2 = s2p;
1457 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
1458 SYMBOL_SEARCH_NAME (*s2));
1462 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1464 /* Sort the global list; don't sort the static list. */
1466 qsort (objfile->global_psymbols.list + pst->globals_offset,
1467 pst->n_global_syms, sizeof (struct partial_symbol *),
1471 /* Allocate and partially fill a partial symtab. It will be
1472 completely filled at the end of the symbol list.
1474 FILENAME is the name of the symbol-file we are reading from. */
1476 struct partial_symtab *
1477 start_psymtab_common (struct objfile *objfile,
1478 struct section_offsets *section_offsets,
1479 const char *filename,
1480 CORE_ADDR textlow, struct partial_symbol **global_syms,
1481 struct partial_symbol **static_syms)
1483 struct partial_symtab *psymtab;
1485 psymtab = allocate_psymtab (filename, objfile);
1486 psymtab->section_offsets = section_offsets;
1487 psymtab->textlow = textlow;
1488 psymtab->texthigh = psymtab->textlow; /* default */
1489 psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
1490 psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
1494 /* Calculate a hash code for the given partial symbol. The hash is
1495 calculated using the symbol's value, language, domain, class
1496 and name. These are the values which are set by
1497 add_psymbol_to_bcache. */
1499 static unsigned long
1500 psymbol_hash (const void *addr, int length)
1502 unsigned long h = 0;
1503 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1504 unsigned int lang = psymbol->ginfo.language;
1505 unsigned int domain = PSYMBOL_DOMAIN (psymbol);
1506 unsigned int class = PSYMBOL_CLASS (psymbol);
1508 h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
1509 h = hash_continue (&lang, sizeof (unsigned int), h);
1510 h = hash_continue (&domain, sizeof (unsigned int), h);
1511 h = hash_continue (&class, sizeof (unsigned int), h);
1512 h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
1517 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1518 For the comparison this function uses a symbols value,
1519 language, domain, class and name. */
1522 psymbol_compare (const void *addr1, const void *addr2, int length)
1524 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1525 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1527 return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value,
1528 sizeof (sym1->ginfo.value)) == 0
1529 && sym1->ginfo.language == sym2->ginfo.language
1530 && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
1531 && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
1532 && sym1->ginfo.name == sym2->ginfo.name);
1535 /* Initialize a partial symbol bcache. */
1537 struct psymbol_bcache *
1538 psymbol_bcache_init (void)
1540 struct psymbol_bcache *bcache = XCALLOC (1, struct psymbol_bcache);
1541 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1545 /* Free a partial symbol bcache. */
1547 psymbol_bcache_free (struct psymbol_bcache *bcache)
1552 bcache_xfree (bcache->bcache);
1556 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1559 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1561 return bcache->bcache;
1564 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1565 symbol before, add a copy to BCACHE. In either case, return a pointer
1566 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1567 1 in case of new entry or 0 if returning an old entry. */
1569 static const struct partial_symbol *
1570 psymbol_bcache_full (struct partial_symbol *sym,
1571 struct psymbol_bcache *bcache,
1574 return bcache_full (sym,
1575 sizeof (struct partial_symbol),
1580 /* Helper function, initialises partial symbol structure and stashes
1581 it into objfile's bcache. Note that our caching mechanism will
1582 use all fields of struct partial_symbol to determine hash value of the
1583 structure. In other words, having two symbols with the same name but
1584 different domain (or address) is possible and correct. */
1586 static const struct partial_symbol *
1587 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1589 enum address_class class,
1590 long val, /* Value as a long */
1591 CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
1592 enum language language, struct objfile *objfile,
1595 struct partial_symbol psymbol;
1597 /* We must ensure that the entire struct has been zeroed before
1598 assigning to it, because an assignment may not touch some of the
1600 memset (&psymbol, 0, sizeof (psymbol));
1602 /* val and coreaddr are mutually exclusive, one of them *will* be zero. */
1605 SYMBOL_VALUE (&psymbol) = val;
1609 SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
1611 SYMBOL_SECTION (&psymbol) = -1;
1612 SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack);
1613 PSYMBOL_DOMAIN (&psymbol) = domain;
1614 PSYMBOL_CLASS (&psymbol) = class;
1616 SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
1618 /* Stash the partial symbol away in the cache. */
1619 return psymbol_bcache_full (&psymbol,
1620 objfile->psymbol_cache,
1624 /* Increase the space allocated for LISTP, which is probably
1625 global_psymbols or static_psymbols. This space will eventually
1626 be freed in free_objfile(). */
1629 extend_psymbol_list (struct psymbol_allocation_list *listp,
1630 struct objfile *objfile)
1634 if (listp->size == 0)
1637 listp->list = (struct partial_symbol **)
1638 xmalloc (new_size * sizeof (struct partial_symbol *));
1642 new_size = listp->size * 2;
1643 listp->list = (struct partial_symbol **)
1644 xrealloc ((char *) listp->list,
1645 new_size * sizeof (struct partial_symbol *));
1647 /* Next assumes we only went one over. Should be good if
1648 program works correctly. */
1649 listp->next = listp->list + listp->size;
1650 listp->size = new_size;
1653 /* Helper function, adds partial symbol to the given partial symbol
1657 append_psymbol_to_list (struct psymbol_allocation_list *list,
1658 const struct partial_symbol *psym,
1659 struct objfile *objfile)
1661 if (list->next >= list->list + list->size)
1662 extend_psymbol_list (list, objfile);
1663 *list->next++ = (struct partial_symbol *) psym;
1664 OBJSTAT (objfile, n_psyms++);
1667 /* Add a symbol with a long value to a psymtab.
1668 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1669 Return the partial symbol that has been added. */
1672 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1674 enum address_class class,
1675 struct psymbol_allocation_list *list,
1676 long val, /* Value as a long */
1677 CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
1678 enum language language, struct objfile *objfile)
1680 const struct partial_symbol *psym;
1684 /* Stash the partial symbol away in the cache. */
1685 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class,
1686 val, coreaddr, language, objfile, &added);
1688 /* Do not duplicate global partial symbols. */
1689 if (list == &objfile->global_psymbols
1693 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1694 append_psymbol_to_list (list, psym, objfile);
1697 /* Initialize storage for partial symbols. */
1700 init_psymbol_list (struct objfile *objfile, int total_symbols)
1702 /* Free any previously allocated psymbol lists. */
1704 if (objfile->global_psymbols.list)
1706 xfree (objfile->global_psymbols.list);
1708 if (objfile->static_psymbols.list)
1710 xfree (objfile->static_psymbols.list);
1713 /* Current best guess is that approximately a twentieth
1714 of the total symbols (in a debugging file) are global or static
1715 oriented symbols, then multiply that by slop factor of two. */
1717 objfile->global_psymbols.size = total_symbols / 10;
1718 objfile->static_psymbols.size = total_symbols / 10;
1720 if (objfile->global_psymbols.size > 0)
1722 objfile->global_psymbols.next =
1723 objfile->global_psymbols.list = (struct partial_symbol **)
1724 xmalloc ((objfile->global_psymbols.size
1725 * sizeof (struct partial_symbol *)));
1727 if (objfile->static_psymbols.size > 0)
1729 objfile->static_psymbols.next =
1730 objfile->static_psymbols.list = (struct partial_symbol **)
1731 xmalloc ((objfile->static_psymbols.size
1732 * sizeof (struct partial_symbol *)));
1736 struct partial_symtab *
1737 allocate_psymtab (const char *filename, struct objfile *objfile)
1739 struct partial_symtab *psymtab;
1741 if (objfile->free_psymtabs)
1743 psymtab = objfile->free_psymtabs;
1744 objfile->free_psymtabs = psymtab->next;
1747 psymtab = (struct partial_symtab *)
1748 obstack_alloc (&objfile->objfile_obstack,
1749 sizeof (struct partial_symtab));
1751 memset (psymtab, 0, sizeof (struct partial_symtab));
1752 psymtab->filename = obstack_copy0 (&objfile->objfile_obstack,
1753 filename, strlen (filename));
1754 psymtab->symtab = NULL;
1756 /* Prepend it to the psymtab list for the objfile it belongs to.
1757 Psymtabs are searched in most recent inserted -> least recent
1760 psymtab->next = objfile->psymtabs;
1761 objfile->psymtabs = psymtab;
1763 if (symtab_create_debug)
1765 /* Be a bit clever with debugging messages, and don't print objfile
1766 every time, only when it changes. */
1767 static char *last_objfile_name = NULL;
1769 if (last_objfile_name == NULL
1770 || strcmp (last_objfile_name, objfile->name) != 0)
1772 xfree (last_objfile_name);
1773 last_objfile_name = xstrdup (objfile->name);
1774 fprintf_unfiltered (gdb_stdlog,
1775 "Creating one or more psymtabs for objfile %s ...\n",
1778 fprintf_unfiltered (gdb_stdlog,
1779 "Created psymtab %s for module %s.\n",
1780 host_address_to_string (psymtab), filename);
1787 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1789 struct partial_symtab **prev_pst;
1792 Empty psymtabs happen as a result of header files which don't
1793 have any symbols in them. There can be a lot of them. But this
1794 check is wrong, in that a psymtab with N_SLINE entries but
1795 nothing else is not empty, but we don't realize that. Fixing
1796 that without slowing things down might be tricky. */
1798 /* First, snip it out of the psymtab chain. */
1800 prev_pst = &(objfile->psymtabs);
1801 while ((*prev_pst) != pst)
1802 prev_pst = &((*prev_pst)->next);
1803 (*prev_pst) = pst->next;
1805 /* Next, put it on a free list for recycling. */
1807 pst->next = objfile->free_psymtabs;
1808 objfile->free_psymtabs = pst;
1811 /* An object of this type is passed to discard_psymtabs_upto. */
1813 struct psymtab_state
1815 /* The objfile where psymtabs are discarded. */
1817 struct objfile *objfile;
1819 /* The first psymtab to save. */
1821 struct partial_symtab *save;
1824 /* A cleanup function used by make_cleanup_discard_psymtabs. */
1827 discard_psymtabs_upto (void *arg)
1829 struct psymtab_state *state = arg;
1831 while (state->objfile->psymtabs != state->save)
1832 discard_psymtab (state->objfile, state->objfile->psymtabs);
1835 /* Return a new cleanup that discards all psymtabs created in OBJFILE
1836 after this function is called. */
1839 make_cleanup_discard_psymtabs (struct objfile *objfile)
1841 struct psymtab_state *state = XNEW (struct psymtab_state);
1843 state->objfile = objfile;
1844 state->save = objfile->psymtabs;
1846 return make_cleanup_dtor (discard_psymtabs_upto, state, xfree);
1852 maintenance_print_psymbols (char *args, int from_tty)
1855 struct ui_file *outfile;
1856 struct cleanup *cleanups;
1857 char *symname = NULL;
1858 char *filename = DEV_TTY;
1859 struct objfile *objfile;
1860 struct partial_symtab *ps;
1867 print-psymbols takes an output file name and optional symbol file name"));
1869 argv = gdb_buildargv (args);
1870 cleanups = make_cleanup_freeargv (argv);
1872 if (argv[0] != NULL)
1875 /* If a second arg is supplied, it is a source file name to match on. */
1876 if (argv[1] != NULL)
1882 filename = tilde_expand (filename);
1883 make_cleanup (xfree, filename);
1885 outfile = gdb_fopen (filename, FOPEN_WT);
1887 perror_with_name (filename);
1888 make_cleanup_ui_file_delete (outfile);
1890 ALL_PSYMTABS (objfile, ps)
1893 if (symname == NULL || filename_cmp (symname, ps->filename) == 0)
1894 dump_psymtab (objfile, ps, outfile);
1896 do_cleanups (cleanups);
1899 /* List all the partial symbol tables whose names match REGEXP (optional). */
1901 maintenance_info_psymtabs (char *regexp, int from_tty)
1903 struct program_space *pspace;
1904 struct objfile *objfile;
1909 ALL_PSPACES (pspace)
1910 ALL_PSPACE_OBJFILES (pspace, objfile)
1912 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1913 struct partial_symtab *psymtab;
1915 /* We don't want to print anything for this objfile until we
1916 actually find a symtab whose name matches. */
1917 int printed_objfile_start = 0;
1919 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1924 || re_exec (psymtab->filename))
1926 if (! printed_objfile_start)
1928 printf_filtered ("{ objfile %s ", objfile->name);
1930 printf_filtered ("((struct objfile *) %s)\n",
1931 host_address_to_string (objfile));
1932 printed_objfile_start = 1;
1935 printf_filtered (" { psymtab %s ", psymtab->filename);
1937 printf_filtered ("((struct partial_symtab *) %s)\n",
1938 host_address_to_string (psymtab));
1940 printf_filtered (" readin %s\n",
1941 psymtab->readin ? "yes" : "no");
1942 printf_filtered (" fullname %s\n",
1944 ? psymtab->fullname : "(null)");
1945 printf_filtered (" text addresses ");
1946 fputs_filtered (paddress (gdbarch, psymtab->textlow),
1948 printf_filtered (" -- ");
1949 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
1951 printf_filtered ("\n");
1952 printf_filtered (" psymtabs_addrmap_supported %s\n",
1953 (psymtab->psymtabs_addrmap_supported
1955 printf_filtered (" globals ");
1956 if (psymtab->n_global_syms)
1958 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
1959 host_address_to_string (objfile->global_psymbols.list
1960 + psymtab->globals_offset),
1961 psymtab->n_global_syms);
1964 printf_filtered ("(none)\n");
1965 printf_filtered (" statics ");
1966 if (psymtab->n_static_syms)
1968 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
1969 host_address_to_string (objfile->static_psymbols.list
1970 + psymtab->statics_offset),
1971 psymtab->n_static_syms);
1974 printf_filtered ("(none)\n");
1975 printf_filtered (" dependencies ");
1976 if (psymtab->number_of_dependencies)
1980 printf_filtered ("{\n");
1981 for (i = 0; i < psymtab->number_of_dependencies; i++)
1983 struct partial_symtab *dep = psymtab->dependencies[i];
1985 /* Note the string concatenation there --- no comma. */
1986 printf_filtered (" psymtab %s "
1987 "((struct partial_symtab *) %s)\n",
1989 host_address_to_string (dep));
1991 printf_filtered (" }\n");
1994 printf_filtered ("(none)\n");
1995 printf_filtered (" }\n");
1999 if (printed_objfile_start)
2000 printf_filtered ("}\n");
2004 /* Check consistency of psymtabs and symtabs. */
2007 maintenance_check_symtabs (char *ignore, int from_tty)
2010 struct partial_symbol **psym;
2011 struct symtab *s = NULL;
2012 struct partial_symtab *ps;
2013 struct blockvector *bv;
2014 struct objfile *objfile;
2018 ALL_PSYMTABS (objfile, ps)
2020 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2022 s = psymtab_to_symtab (objfile, ps);
2025 bv = BLOCKVECTOR (s);
2026 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2027 psym = objfile->static_psymbols.list + ps->statics_offset;
2028 length = ps->n_static_syms;
2031 sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2032 SYMBOL_DOMAIN (*psym));
2035 printf_filtered ("Static symbol `");
2036 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2037 printf_filtered ("' only found in ");
2038 puts_filtered (ps->filename);
2039 printf_filtered (" psymtab\n");
2043 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2044 psym = objfile->global_psymbols.list + ps->globals_offset;
2045 length = ps->n_global_syms;
2048 sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2049 SYMBOL_DOMAIN (*psym));
2052 printf_filtered ("Global symbol `");
2053 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2054 printf_filtered ("' only found in ");
2055 puts_filtered (ps->filename);
2056 printf_filtered (" psymtab\n");
2060 if (ps->texthigh < ps->textlow)
2062 printf_filtered ("Psymtab ");
2063 puts_filtered (ps->filename);
2064 printf_filtered (" covers bad range ");
2065 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2066 printf_filtered (" - ");
2067 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2068 printf_filtered ("\n");
2071 if (ps->texthigh == 0)
2073 if (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b))
2075 printf_filtered ("Psymtab ");
2076 puts_filtered (ps->filename);
2077 printf_filtered (" covers ");
2078 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2079 printf_filtered (" - ");
2080 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2081 printf_filtered (" but symtab covers only ");
2082 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2083 printf_filtered (" - ");
2084 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2085 printf_filtered ("\n");
2093 expand_partial_symbol_names (int (*fun) (const char *, void *),
2096 struct objfile *objfile;
2098 ALL_OBJFILES (objfile)
2101 objfile->sf->qf->expand_symtabs_matching (objfile, NULL, fun,
2107 map_partial_symbol_filenames (symbol_filename_ftype *fun, void *data,
2110 struct objfile *objfile;
2112 ALL_OBJFILES (objfile)
2115 objfile->sf->qf->map_symbol_filenames (objfile, fun, data,
2120 extern initialize_file_ftype _initialize_psymtab;
2123 _initialize_psymtab (void)
2125 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2126 Print dump of current partial symbol definitions.\n\
2127 Entries in the partial symbol table are dumped to file OUTFILE.\n\
2128 If a SOURCE file is specified, dump only that file's partial symbols."),
2129 &maintenanceprintlist);
2131 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2132 List the partial symbol tables for all object files.\n\
2133 This does not include information about individual partial symbols,\n\
2134 just the symbol table structures themselves."),
2135 &maintenanceinfolist);
2137 add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
2138 _("Check consistency of psymtabs and symtabs."),