1 /* Partial symbol tables.
3 Copyright (C) 2009-2017 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"
41 struct bcache *bcache;
44 static struct partial_symbol *match_partial_symbol (struct objfile *,
45 struct partial_symtab *,
47 const char *, domain_enum,
48 symbol_compare_ftype *,
49 symbol_compare_ftype *);
51 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
52 struct partial_symtab *,
56 static const char *psymtab_to_fullname (struct partial_symtab *ps);
58 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
59 struct partial_symtab *,
61 struct obj_section *);
63 static void fixup_psymbol_section (struct partial_symbol *psym,
64 struct objfile *objfile);
66 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
67 struct partial_symtab *pst);
69 /* Ensure that the partial symbols for OBJFILE have been loaded. This
70 function always returns its argument, as a convenience. */
73 require_partial_symbols (struct objfile *objfile, int verbose)
75 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
77 objfile->flags |= OBJF_PSYMTABS_READ;
79 if (objfile->sf->sym_read_psymbols)
83 printf_unfiltered (_("Reading symbols from %s..."),
84 objfile_name (objfile));
85 gdb_flush (gdb_stdout);
87 (*objfile->sf->sym_read_psymbols) (objfile);
90 if (!objfile_has_symbols (objfile))
93 printf_unfiltered (_("(no debugging symbols found)..."));
97 printf_unfiltered (_("done.\n"));
105 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
108 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
109 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
113 /* We want to make sure this file always requires psymtabs. */
115 #undef ALL_OBJFILE_PSYMTABS
117 /* Traverse all psymtabs in all objfiles. */
119 #define ALL_PSYMTABS(objfile, p) \
120 ALL_OBJFILES (objfile) \
121 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
123 /* Helper function for psym_map_symtabs_matching_filename that
124 expands the symtabs and calls the iterator. */
127 partial_map_expand_apply (struct objfile *objfile,
129 const char *real_path,
130 struct partial_symtab *pst,
131 gdb::function_view<bool (symtab *)> callback)
133 struct compunit_symtab *last_made = objfile->compunit_symtabs;
135 /* Shared psymtabs should never be seen here. Instead they should
136 be handled properly by the caller. */
137 gdb_assert (pst->user == NULL);
139 /* Don't visit already-expanded psymtabs. */
143 /* This may expand more than one symtab, and we want to iterate over
145 psymtab_to_symtab (objfile, pst);
147 return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs,
148 last_made, callback);
151 /* Psymtab version of map_symtabs_matching_filename. See its definition in
152 the definition of quick_symbol_functions in symfile.h. */
155 psym_map_symtabs_matching_filename
156 (struct objfile *objfile,
158 const char *real_path,
159 gdb::function_view<bool (symtab *)> callback)
161 struct partial_symtab *pst;
162 const char *name_basename = lbasename (name);
164 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
166 /* We can skip shared psymtabs here, because any file name will be
167 attached to the unshared psymtab. */
168 if (pst->user != NULL)
171 /* Anonymous psymtabs don't have a file name. */
175 if (compare_filenames_for_search (pst->filename, name))
177 if (partial_map_expand_apply (objfile, name, real_path,
183 /* Before we invoke realpath, which can get expensive when many
184 files are involved, do a quick comparison of the basenames. */
185 if (! basenames_may_differ
186 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
189 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
191 if (partial_map_expand_apply (objfile, name, real_path,
197 /* If the user gave us an absolute path, try to find the file in
198 this symtab and use its absolute path. */
199 if (real_path != NULL)
201 gdb_assert (IS_ABSOLUTE_PATH (real_path));
202 gdb_assert (IS_ABSOLUTE_PATH (name));
203 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
205 if (partial_map_expand_apply (objfile, name, real_path,
216 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
217 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
219 static struct partial_symtab *
220 find_pc_sect_psymtab_closer (struct objfile *objfile,
221 CORE_ADDR pc, struct obj_section *section,
222 struct partial_symtab *pst,
223 struct bound_minimal_symbol msymbol)
225 struct partial_symtab *tpst;
226 struct partial_symtab *best_pst = pst;
227 CORE_ADDR best_addr = pst->textlow;
229 gdb_assert (!pst->psymtabs_addrmap_supported);
231 /* An objfile that has its functions reordered might have
232 many partial symbol tables containing the PC, but
233 we want the partial symbol table that contains the
234 function containing the PC. */
235 if (!(objfile->flags & OBJF_REORDERED)
236 && section == NULL) /* Can't validate section this way. */
239 if (msymbol.minsym == NULL)
242 /* The code range of partial symtabs sometimes overlap, so, in
243 the loop below, we need to check all partial symtabs and
244 find the one that fits better for the given PC address. We
245 select the partial symtab that contains a symbol whose
246 address is closest to the PC address. By closest we mean
247 that find_pc_sect_symbol returns the symbol with address
248 that is closest and still less than the given PC. */
249 for (tpst = pst; tpst != NULL; tpst = tpst->next)
251 if (pc >= tpst->textlow && pc < tpst->texthigh)
253 struct partial_symbol *p;
256 /* NOTE: This assumes that every psymbol has a
257 corresponding msymbol, which is not necessarily
258 true; the debug info might be much richer than the
259 object's symbol table. */
260 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
262 && (SYMBOL_VALUE_ADDRESS (p)
263 == BMSYMBOL_VALUE_ADDRESS (msymbol)))
266 /* Also accept the textlow value of a psymtab as a
267 "symbol", to provide some support for partial
268 symbol tables with line information but no debug
269 symbols (e.g. those produced by an assembler). */
271 this_addr = SYMBOL_VALUE_ADDRESS (p);
273 this_addr = tpst->textlow;
275 /* Check whether it is closer than our current
276 BEST_ADDR. Since this symbol address is
277 necessarily lower or equal to PC, the symbol closer
278 to PC is the symbol which address is the highest.
279 This way we return the psymtab which contains such
280 best match symbol. This can help in cases where the
281 symbol information/debuginfo is not complete, like
282 for instance on IRIX6 with gcc, where no debug info
283 is emitted for statics. (See also the nodebug.exp
285 if (this_addr > best_addr)
287 best_addr = this_addr;
295 /* Find which partial symtab contains PC and SECTION. Return NULL if
296 none. We return the psymtab that contains a symbol whose address
297 exactly matches PC, or, if we cannot find an exact match, the
298 psymtab that contains a symbol whose address is closest to PC. */
300 static struct partial_symtab *
301 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
302 struct obj_section *section,
303 struct bound_minimal_symbol msymbol)
305 struct partial_symtab *pst;
307 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
308 than the later used TEXTLOW/TEXTHIGH one. */
310 if (objfile->psymtabs_addrmap != NULL)
312 pst = ((struct partial_symtab *)
313 addrmap_find (objfile->psymtabs_addrmap, pc));
316 /* FIXME: addrmaps currently do not handle overlayed sections,
317 so fall back to the non-addrmap case if we're debugging
318 overlays and the addrmap returned the wrong section. */
319 if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
321 struct partial_symbol *p;
323 /* NOTE: This assumes that every psymbol has a
324 corresponding msymbol, which is not necessarily
325 true; the debug info might be much richer than the
326 object's symbol table. */
327 p = find_pc_sect_psymbol (objfile, pst, pc, section);
329 || (SYMBOL_VALUE_ADDRESS (p)
330 != BMSYMBOL_VALUE_ADDRESS (msymbol)))
334 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
335 PSYMTABS_ADDRMAP we used has already the best 1-byte
336 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
337 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
346 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
347 which still have no corresponding full SYMTABs read. But it is not
348 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
351 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
352 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
353 debug info type in single OBJFILE. */
355 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
356 if (!pst->psymtabs_addrmap_supported
357 && pc >= pst->textlow && pc < pst->texthigh)
359 struct partial_symtab *best_pst;
361 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
363 if (best_pst != NULL)
370 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
371 the definition of quick_symbol_functions in symfile.h. */
373 static struct compunit_symtab *
374 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
375 struct bound_minimal_symbol msymbol,
377 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);
392 return ps->compunit_symtab;
397 /* Find which partial symbol within a psymtab matches PC and SECTION.
398 Return NULL if none. */
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 != NULL) /* 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 != NULL) /* 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 /* Psymtab version of lookup_symbol. See its definition in
499 the definition of quick_symbol_functions in symfile.h. */
501 static struct compunit_symtab *
502 psym_lookup_symbol (struct objfile *objfile,
503 int block_index, const char *name,
504 const domain_enum domain)
506 struct partial_symtab *ps;
507 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
508 struct compunit_symtab *stab_best = NULL;
510 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
512 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
513 psymtab_index, domain))
515 struct symbol *sym, *with_opaque = NULL;
516 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
517 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
518 is empty, we can assume it won't here because lookup_partial_symbol
520 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
521 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
523 sym = block_find_symbol (block, name, domain,
524 block_find_non_opaque_type_preferred,
527 /* Some caution must be observed with overloaded functions
528 and methods, since the index will not contain any overload
529 information (but NAME might contain it). */
532 && SYMBOL_MATCHES_SEARCH_NAME (sym, name))
534 if (with_opaque != NULL
535 && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, name))
538 /* Keep looking through other psymtabs. */
545 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
546 the global block of PST if GLOBAL, and otherwise the static block.
547 MATCH is the comparison operation that returns true iff MATCH (s,
548 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
549 non-null, the symbols in the block are assumed to be ordered
550 according to it (allowing binary search). It must be compatible
551 with MATCH. Returns the symbol, if found, and otherwise NULL. */
553 static struct partial_symbol *
554 match_partial_symbol (struct objfile *objfile,
555 struct partial_symtab *pst, int global,
556 const char *name, domain_enum domain,
557 symbol_compare_ftype *match,
558 symbol_compare_ftype *ordered_compare)
560 struct partial_symbol **start, **psym;
561 struct partial_symbol **top, **real_top, **bottom, **center;
562 int length = (global ? pst->n_global_syms : pst->n_static_syms);
563 int do_linear_search = 1;
568 objfile->global_psymbols.list + pst->globals_offset :
569 objfile->static_psymbols.list + pst->statics_offset);
571 if (global && ordered_compare) /* Can use a binary search. */
573 do_linear_search = 0;
575 /* Binary search. This search is guaranteed to end with center
576 pointing at the earliest partial symbol whose name might be
577 correct. At that point *all* partial symbols with an
578 appropriate name will be checked against the correct
582 top = start + length - 1;
586 center = bottom + (top - bottom) / 2;
587 gdb_assert (center < top);
588 if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
593 gdb_assert (top == bottom);
595 while (top <= real_top
596 && match (SYMBOL_SEARCH_NAME (*top), name) == 0)
598 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
599 SYMBOL_DOMAIN (*top), domain))
605 /* Can't use a binary search or else we found during the binary search that
606 we should also do a linear search. */
608 if (do_linear_search)
610 for (psym = start; psym < start + length; psym++)
612 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
613 SYMBOL_DOMAIN (*psym), domain)
614 && match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
622 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
623 not contain any method/function instance information (since this would
624 force reading type information while reading psymtabs). Therefore,
625 if NAME contains overload information, it must be stripped before searching
628 The caller is responsible for freeing the return result. */
631 psymtab_search_name (const char *name)
633 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;
672 search_name = psymtab_search_name (name);
673 cleanup = make_cleanup (xfree, search_name);
675 objfile->global_psymbols.list + pst->globals_offset :
676 objfile->static_psymbols.list + pst->statics_offset);
678 if (global) /* This means we can use a binary search. */
680 do_linear_search = 0;
682 /* Binary search. This search is guaranteed to end with center
683 pointing at the earliest partial symbol whose name might be
684 correct. At that point *all* partial symbols with an
685 appropriate name will be checked against the correct
689 top = start + length - 1;
693 center = bottom + (top - bottom) / 2;
695 internal_error (__FILE__, __LINE__,
696 _("failed internal consistency check"));
697 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center),
707 if (!(top == bottom))
708 internal_error (__FILE__, __LINE__,
709 _("failed internal consistency check"));
711 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
712 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
713 while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
716 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
719 while (top <= real_top && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
721 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
722 SYMBOL_DOMAIN (*top), domain))
724 do_cleanups (cleanup);
731 /* Can't use a binary search or else we found during the binary search that
732 we should also do a linear search. */
734 if (do_linear_search)
736 for (psym = start; psym < start + length; psym++)
738 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
739 SYMBOL_DOMAIN (*psym), domain)
740 && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name))
742 do_cleanups (cleanup);
748 do_cleanups (cleanup);
752 /* Get the symbol table that corresponds to a partial_symtab.
753 This is fast after the first time you do it.
754 The result will be NULL if the primary symtab has no symbols,
755 which can happen. Otherwise the result is the primary symtab
756 that contains PST. */
758 static struct compunit_symtab *
759 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
761 /* If it is a shared psymtab, find an unshared psymtab that includes
762 it. Any such psymtab will do. */
763 while (pst->user != NULL)
766 /* If it's been looked up before, return it. */
767 if (pst->compunit_symtab)
768 return pst->compunit_symtab;
770 /* If it has not yet been read in, read it. */
773 scoped_restore decrementer = increment_reading_symtab ();
775 (*pst->read_symtab) (pst, objfile);
778 return pst->compunit_symtab;
781 /* Psymtab version of relocate. See its definition in
782 the definition of quick_symbol_functions in symfile.h. */
785 psym_relocate (struct objfile *objfile,
786 const struct section_offsets *new_offsets,
787 const struct section_offsets *delta)
789 struct partial_symbol **psym;
790 struct partial_symtab *p;
792 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
794 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
795 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
798 for (psym = objfile->global_psymbols.list;
799 psym < objfile->global_psymbols.next;
802 fixup_psymbol_section (*psym, objfile);
803 if (SYMBOL_SECTION (*psym) >= 0)
804 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
805 SYMBOL_SECTION (*psym));
807 for (psym = objfile->static_psymbols.list;
808 psym < objfile->static_psymbols.next;
811 fixup_psymbol_section (*psym, objfile);
812 if (SYMBOL_SECTION (*psym) >= 0)
813 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
814 SYMBOL_SECTION (*psym));
818 /* Psymtab version of find_last_source_symtab. See its definition in
819 the definition of quick_symbol_functions in symfile.h. */
821 static struct symtab *
822 psym_find_last_source_symtab (struct objfile *ofp)
824 struct partial_symtab *ps;
825 struct partial_symtab *cs_pst = NULL;
827 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
829 const char *name = ps->filename;
830 int len = strlen (name);
832 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
833 || strcmp (name, "<<C++-namespaces>>") == 0)))
841 internal_error (__FILE__, __LINE__,
842 _("select_source_symtab: "
843 "readin pst found and no symtabs."));
847 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
851 return compunit_primary_filetab (cust);
857 /* Psymtab version of forget_cached_source_info. See its definition in
858 the definition of quick_symbol_functions in symfile.h. */
861 psym_forget_cached_source_info (struct objfile *objfile)
863 struct partial_symtab *pst;
865 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
867 if (pst->fullname != NULL)
869 xfree (pst->fullname);
870 pst->fullname = NULL;
876 print_partial_symbols (struct gdbarch *gdbarch,
877 struct partial_symbol **p, int count, const char *what,
878 struct ui_file *outfile)
880 fprintf_filtered (outfile, " %s partial symbols:\n", what);
884 fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
885 if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
887 fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
889 fputs_filtered (", ", outfile);
890 switch (SYMBOL_DOMAIN (*p))
893 fputs_filtered ("undefined domain, ", outfile);
896 /* This is the usual thing -- don't print it. */
899 fputs_filtered ("struct domain, ", outfile);
902 fputs_filtered ("label domain, ", outfile);
905 fputs_filtered ("<invalid domain>, ", outfile);
908 switch (PSYMBOL_CLASS (*p))
911 fputs_filtered ("undefined", outfile);
914 fputs_filtered ("constant int", outfile);
917 fputs_filtered ("static", outfile);
920 fputs_filtered ("register", outfile);
923 fputs_filtered ("pass by value", outfile);
926 fputs_filtered ("pass by reference", outfile);
928 case LOC_REGPARM_ADDR:
929 fputs_filtered ("register address parameter", outfile);
932 fputs_filtered ("stack parameter", outfile);
935 fputs_filtered ("type", outfile);
938 fputs_filtered ("label", outfile);
941 fputs_filtered ("function", outfile);
943 case LOC_CONST_BYTES:
944 fputs_filtered ("constant bytes", outfile);
947 fputs_filtered ("unresolved", outfile);
949 case LOC_OPTIMIZED_OUT:
950 fputs_filtered ("optimized out", outfile);
953 fputs_filtered ("computed at runtime", outfile);
956 fputs_filtered ("<invalid location>", outfile);
959 fputs_filtered (", ", outfile);
960 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
961 fprintf_filtered (outfile, "\n");
967 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
968 struct ui_file *outfile)
970 struct gdbarch *gdbarch = get_objfile_arch (objfile);
973 if (psymtab->anonymous)
975 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
980 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
983 fprintf_filtered (outfile, "(object ");
984 gdb_print_host_address (psymtab, outfile);
985 fprintf_filtered (outfile, ")\n\n");
986 fprintf_unfiltered (outfile, " Read from object file %s (",
987 objfile_name (objfile));
988 gdb_print_host_address (objfile, outfile);
989 fprintf_unfiltered (outfile, ")\n");
993 fprintf_filtered (outfile,
994 " Full symtab was read (at ");
995 gdb_print_host_address (psymtab->compunit_symtab, outfile);
996 fprintf_filtered (outfile, " by function at ");
997 gdb_print_host_address (psymtab->read_symtab, outfile);
998 fprintf_filtered (outfile, ")\n");
1001 fprintf_filtered (outfile, " Symbols cover text addresses ");
1002 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
1003 fprintf_filtered (outfile, "-");
1004 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
1005 fprintf_filtered (outfile, "\n");
1006 fprintf_filtered (outfile, " Address map supported - %s.\n",
1007 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
1008 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
1009 psymtab->number_of_dependencies);
1010 for (i = 0; i < psymtab->number_of_dependencies; i++)
1012 fprintf_filtered (outfile, " %d ", i);
1013 gdb_print_host_address (psymtab->dependencies[i], outfile);
1014 fprintf_filtered (outfile, " %s\n",
1015 psymtab->dependencies[i]->filename);
1017 if (psymtab->user != NULL)
1019 fprintf_filtered (outfile, " Shared partial symtab with user ");
1020 gdb_print_host_address (psymtab->user, outfile);
1021 fprintf_filtered (outfile, "\n");
1023 if (psymtab->n_global_syms > 0)
1025 print_partial_symbols (gdbarch,
1026 objfile->global_psymbols.list
1027 + psymtab->globals_offset,
1028 psymtab->n_global_syms, "Global", outfile);
1030 if (psymtab->n_static_syms > 0)
1032 print_partial_symbols (gdbarch,
1033 objfile->static_psymbols.list
1034 + psymtab->statics_offset,
1035 psymtab->n_static_syms, "Static", outfile);
1037 fprintf_filtered (outfile, "\n");
1040 /* Psymtab version of print_stats. See its definition in
1041 the definition of quick_symbol_functions in symfile.h. */
1044 psym_print_stats (struct objfile *objfile)
1047 struct partial_symtab *ps;
1050 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1052 if (ps->readin == 0)
1055 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1058 /* Psymtab version of dump. See its definition in
1059 the definition of quick_symbol_functions in symfile.h. */
1062 psym_dump (struct objfile *objfile)
1064 struct partial_symtab *psymtab;
1066 if (objfile->psymtabs)
1068 printf_filtered ("Psymtabs:\n");
1069 for (psymtab = objfile->psymtabs;
1071 psymtab = psymtab->next)
1073 printf_filtered ("%s at ",
1075 gdb_print_host_address (psymtab, gdb_stdout);
1076 printf_filtered (", ");
1079 printf_filtered ("\n\n");
1083 /* Psymtab version of expand_symtabs_for_function. See its definition in
1084 the definition of quick_symbol_functions in symfile.h. */
1087 psym_expand_symtabs_for_function (struct objfile *objfile,
1088 const char *func_name)
1090 struct partial_symtab *ps;
1092 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1097 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1099 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1101 psymtab_to_symtab (objfile, ps);
1105 /* Psymtab version of expand_all_symtabs. See its definition in
1106 the definition of quick_symbol_functions in symfile.h. */
1109 psym_expand_all_symtabs (struct objfile *objfile)
1111 struct partial_symtab *psymtab;
1113 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1115 psymtab_to_symtab (objfile, psymtab);
1119 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1120 the definition of quick_symbol_functions in symfile.h. */
1123 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1124 const char *fullname)
1126 struct partial_symtab *p;
1128 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1130 /* Anonymous psymtabs don't have a name of a source file. */
1134 /* psymtab_to_fullname tries to open the file which is slow.
1135 Don't call it if we know the basenames don't match. */
1136 if ((basenames_may_differ
1137 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1138 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1139 psymtab_to_symtab (objfile, p);
1143 /* Psymtab version of map_symbol_filenames. See its definition in
1144 the definition of quick_symbol_functions in symfile.h. */
1147 psym_map_symbol_filenames (struct objfile *objfile,
1148 symbol_filename_ftype *fun, void *data,
1151 struct partial_symtab *ps;
1153 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1155 const char *fullname;
1160 /* We can skip shared psymtabs here, because any file name will be
1161 attached to the unshared psymtab. */
1162 if (ps->user != NULL)
1165 /* Anonymous psymtabs don't have a file name. */
1171 fullname = psymtab_to_fullname (ps);
1174 (*fun) (ps->filename, fullname, data);
1178 /* Finds the fullname that a partial_symtab represents.
1180 If this functions finds the fullname, it will save it in ps->fullname
1181 and it will also return the value.
1183 If this function fails to find the file that this partial_symtab represents,
1184 NULL will be returned and ps->fullname will be set to NULL. */
1187 psymtab_to_fullname (struct partial_symtab *ps)
1189 gdb_assert (!ps->anonymous);
1191 /* Use cached copy if we have it.
1192 We rely on forget_cached_source_info being called appropriately
1193 to handle cases like the file being moved. */
1194 if (ps->fullname == NULL)
1196 int fd = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
1202 gdb::unique_xmalloc_ptr<char> fullname;
1204 /* rewrite_source_path would be applied by find_and_open_source, we
1205 should report the pathname where GDB tried to find the file. */
1207 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1208 fullname.reset (xstrdup (ps->filename));
1210 fullname.reset (concat (ps->dirname, SLASH_STRING,
1211 ps->filename, (char *) NULL));
1213 ps->fullname = rewrite_source_path (fullname.get ()).release ();
1214 if (ps->fullname == NULL)
1215 ps->fullname = fullname.release ();
1219 return ps->fullname;
1222 /* For all symbols, s, in BLOCK that are in DOMAIN 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 domain, 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), domain))
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 psym_map_matching_symbols (struct objfile *objfile,
1255 const char *name, domain_enum domain,
1257 int (*callback) (struct block *,
1258 struct symbol *, void *),
1260 symbol_compare_ftype *match,
1261 symbol_compare_ftype *ordered_compare)
1263 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1264 struct partial_symtab *ps;
1266 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1270 || match_partial_symbol (objfile, ps, global, name, domain, match,
1273 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1274 struct block *block;
1278 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1279 if (map_block (name, domain, objfile, block,
1280 callback, data, match))
1282 if (callback (block, NULL, data))
1288 /* A helper for psym_expand_symtabs_matching that handles searching
1289 included psymtabs. This returns true if a symbol is found, and
1290 false otherwise. It also updates the 'searched_flag' on the
1291 various psymtabs that it searches. */
1294 recursively_search_psymtabs
1295 (struct partial_symtab *ps, struct objfile *objfile, enum search_domain kind,
1296 gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
1298 struct partial_symbol **psym;
1299 struct partial_symbol **bound, **gbound, **sbound;
1301 enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
1304 if (ps->searched_flag != PST_NOT_SEARCHED)
1305 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1307 /* Recurse into shared psymtabs first, because they may have already
1308 been searched, and this could save some time. */
1309 for (i = 0; i < ps->number_of_dependencies; ++i)
1313 /* Skip non-shared dependencies, these are handled elsewhere. */
1314 if (ps->dependencies[i]->user == NULL)
1317 r = recursively_search_psymtabs (ps->dependencies[i],
1318 objfile, kind, sym_matcher);
1321 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1326 gbound = (objfile->global_psymbols.list
1327 + ps->globals_offset + ps->n_global_syms);
1328 sbound = (objfile->static_psymbols.list
1329 + ps->statics_offset + ps->n_static_syms);
1332 /* Go through all of the symbols stored in a partial
1333 symtab in one loop. */
1334 psym = objfile->global_psymbols.list + ps->globals_offset;
1339 if (bound == gbound && ps->n_static_syms != 0)
1341 psym = objfile->static_psymbols.list + ps->statics_offset;
1352 if ((kind == ALL_DOMAIN
1353 || (kind == VARIABLES_DOMAIN
1354 && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF
1355 && PSYMBOL_CLASS (*psym) != LOC_BLOCK)
1356 || (kind == FUNCTIONS_DOMAIN
1357 && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
1358 || (kind == TYPES_DOMAIN
1359 && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
1360 && sym_matcher (SYMBOL_SEARCH_NAME (*psym)))
1362 /* Found a match, so notify our caller. */
1363 result = PST_SEARCHED_AND_FOUND;
1370 ps->searched_flag = result;
1371 return result == PST_SEARCHED_AND_FOUND;
1374 /* Psymtab version of expand_symtabs_matching. See its definition in
1375 the definition of quick_symbol_functions in symfile.h. */
1378 psym_expand_symtabs_matching
1379 (struct objfile *objfile,
1380 gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
1381 gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
1382 gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
1383 enum search_domain kind)
1385 struct partial_symtab *ps;
1387 /* Clear the search flags. */
1388 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1390 ps->searched_flag = PST_NOT_SEARCHED;
1393 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1400 /* We skip shared psymtabs because file-matching doesn't apply
1401 to them; but we search them later in the loop. */
1402 if (ps->user != NULL)
1412 match = file_matcher (ps->filename, false);
1415 /* Before we invoke realpath, which can get expensive when many
1416 files are involved, do a quick comparison of the basenames. */
1417 if (basenames_may_differ
1418 || file_matcher (lbasename (ps->filename), true))
1419 match = file_matcher (psymtab_to_fullname (ps), false);
1425 if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher))
1427 struct compunit_symtab *symtab =
1428 psymtab_to_symtab (objfile, ps);
1430 if (expansion_notify != NULL)
1431 expansion_notify (symtab);
1436 /* Psymtab version of has_symbols. See its definition in
1437 the definition of quick_symbol_functions in symfile.h. */
1440 psym_has_symbols (struct objfile *objfile)
1442 return objfile->psymtabs != NULL;
1445 const struct quick_symbol_functions psym_functions =
1448 psym_find_last_source_symtab,
1449 psym_forget_cached_source_info,
1450 psym_map_symtabs_matching_filename,
1455 psym_expand_symtabs_for_function,
1456 psym_expand_all_symtabs,
1457 psym_expand_symtabs_with_fullname,
1458 psym_map_matching_symbols,
1459 psym_expand_symtabs_matching,
1460 psym_find_pc_sect_compunit_symtab,
1461 psym_map_symbol_filenames
1466 /* This compares two partial symbols by names, using strcmp_iw_ordered
1467 for the comparison. */
1470 compare_psymbols (const void *s1p, const void *s2p)
1472 struct partial_symbol *const *s1 = (struct partial_symbol * const*) s1p;
1473 struct partial_symbol *const *s2 = (struct partial_symbol * const*) s2p;
1475 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
1476 SYMBOL_SEARCH_NAME (*s2));
1480 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1482 /* Sort the global list; don't sort the static list. */
1484 qsort (objfile->global_psymbols.list + pst->globals_offset,
1485 pst->n_global_syms, sizeof (struct partial_symbol *),
1489 /* Allocate and partially fill a partial symtab. It will be
1490 completely filled at the end of the symbol list.
1492 FILENAME is the name of the symbol-file we are reading from. */
1494 struct partial_symtab *
1495 start_psymtab_common (struct objfile *objfile,
1496 const char *filename,
1497 CORE_ADDR textlow, struct partial_symbol **global_syms,
1498 struct partial_symbol **static_syms)
1500 struct partial_symtab *psymtab;
1502 psymtab = allocate_psymtab (filename, objfile);
1503 psymtab->textlow = textlow;
1504 psymtab->texthigh = psymtab->textlow; /* default */
1505 psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
1506 psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
1510 /* Perform "finishing up" operations of a partial symtab. */
1513 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
1516 = objfile->global_psymbols.next - (objfile->global_psymbols.list
1517 + pst->globals_offset);
1519 = objfile->static_psymbols.next - (objfile->static_psymbols.list
1520 + pst->statics_offset);
1522 sort_pst_symbols (objfile, pst);
1525 /* Calculate a hash code for the given partial symbol. The hash is
1526 calculated using the symbol's value, language, domain, class
1527 and name. These are the values which are set by
1528 add_psymbol_to_bcache. */
1530 static unsigned long
1531 psymbol_hash (const void *addr, int length)
1533 unsigned long h = 0;
1534 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1535 unsigned int lang = psymbol->ginfo.language;
1536 unsigned int domain = PSYMBOL_DOMAIN (psymbol);
1537 unsigned int theclass = PSYMBOL_CLASS (psymbol);
1539 h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
1540 h = hash_continue (&lang, sizeof (unsigned int), h);
1541 h = hash_continue (&domain, sizeof (unsigned int), h);
1542 h = hash_continue (&theclass, sizeof (unsigned int), h);
1543 h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
1548 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1549 For the comparison this function uses a symbols value,
1550 language, domain, class and name. */
1553 psymbol_compare (const void *addr1, const void *addr2, int length)
1555 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1556 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1558 return (memcmp (&sym1->ginfo.value, &sym2->ginfo.value,
1559 sizeof (sym1->ginfo.value)) == 0
1560 && sym1->ginfo.language == sym2->ginfo.language
1561 && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
1562 && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
1563 && sym1->ginfo.name == sym2->ginfo.name);
1566 /* Initialize a partial symbol bcache. */
1568 struct psymbol_bcache *
1569 psymbol_bcache_init (void)
1571 struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
1573 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1577 /* Free a partial symbol bcache. */
1580 psymbol_bcache_free (struct psymbol_bcache *bcache)
1585 bcache_xfree (bcache->bcache);
1589 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1592 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1594 return bcache->bcache;
1597 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1598 symbol before, add a copy to BCACHE. In either case, return a pointer
1599 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1600 1 in case of new entry or 0 if returning an old entry. */
1602 static const struct partial_symbol *
1603 psymbol_bcache_full (struct partial_symbol *sym,
1604 struct psymbol_bcache *bcache,
1607 return ((const struct partial_symbol *)
1608 bcache_full (sym, sizeof (struct partial_symbol), bcache->bcache,
1612 /* Helper function, initialises partial symbol structure and stashes
1613 it into objfile's bcache. Note that our caching mechanism will
1614 use all fields of struct partial_symbol to determine hash value of the
1615 structure. In other words, having two symbols with the same name but
1616 different domain (or address) is possible and correct. */
1618 static const struct partial_symbol *
1619 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1621 enum address_class theclass,
1623 enum language language, struct objfile *objfile,
1626 struct partial_symbol psymbol;
1628 /* We must ensure that the entire struct has been zeroed before
1629 assigning to it, because an assignment may not touch some of the
1631 memset (&psymbol, 0, sizeof (psymbol));
1633 SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
1634 SYMBOL_SECTION (&psymbol) = -1;
1635 SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack);
1636 PSYMBOL_DOMAIN (&psymbol) = domain;
1637 PSYMBOL_CLASS (&psymbol) = theclass;
1639 SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
1641 /* Stash the partial symbol away in the cache. */
1642 return psymbol_bcache_full (&psymbol, objfile->psymbol_cache, added);
1645 /* Increase the space allocated for LISTP, which is probably
1646 global_psymbols or static_psymbols. This space will eventually
1647 be freed in free_objfile(). */
1650 extend_psymbol_list (struct psymbol_allocation_list *listp,
1651 struct objfile *objfile)
1655 if (listp->size == 0)
1658 listp->list = XNEWVEC (struct partial_symbol *, new_size);
1662 new_size = listp->size * 2;
1663 listp->list = (struct partial_symbol **)
1664 xrealloc ((char *) listp->list,
1665 new_size * sizeof (struct partial_symbol *));
1667 /* Next assumes we only went one over. Should be good if
1668 program works correctly. */
1669 listp->next = listp->list + listp->size;
1670 listp->size = new_size;
1673 /* Helper function, adds partial symbol to the given partial symbol list. */
1676 append_psymbol_to_list (struct psymbol_allocation_list *list,
1677 const struct partial_symbol *psym,
1678 struct objfile *objfile)
1680 if (list->next >= list->list + list->size)
1681 extend_psymbol_list (list, objfile);
1682 *list->next++ = (struct partial_symbol *) psym;
1683 OBJSTAT (objfile, n_psyms++);
1686 /* Add a symbol with a long value to a psymtab.
1687 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1688 The only value we need to store for psyms is an address.
1689 For all other psyms pass zero for COREADDR.
1690 Return the partial symbol that has been added. */
1693 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1695 enum address_class theclass,
1696 struct psymbol_allocation_list *list,
1698 enum language language, struct objfile *objfile)
1700 const struct partial_symbol *psym;
1704 /* Stash the partial symbol away in the cache. */
1705 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, theclass,
1706 coreaddr, language, objfile, &added);
1708 /* Do not duplicate global partial symbols. */
1709 if (list == &objfile->global_psymbols
1713 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1714 append_psymbol_to_list (list, psym, objfile);
1717 /* Initialize storage for partial symbols. */
1720 init_psymbol_list (struct objfile *objfile, int total_symbols)
1722 /* Free any previously allocated psymbol lists. */
1724 if (objfile->global_psymbols.list)
1725 xfree (objfile->global_psymbols.list);
1726 if (objfile->static_psymbols.list)
1727 xfree (objfile->static_psymbols.list);
1729 /* Current best guess is that approximately a twentieth
1730 of the total symbols (in a debugging file) are global or static
1731 oriented symbols, then multiply that by slop factor of two. */
1733 objfile->global_psymbols.size = total_symbols / 10;
1734 objfile->static_psymbols.size = total_symbols / 10;
1736 if (objfile->global_psymbols.size > 0)
1738 objfile->global_psymbols.next =
1739 objfile->global_psymbols.list =
1740 XNEWVEC (struct partial_symbol *, objfile->global_psymbols.size);
1742 if (objfile->static_psymbols.size > 0)
1744 objfile->static_psymbols.next =
1745 objfile->static_psymbols.list =
1746 XNEWVEC (struct partial_symbol *, objfile->static_psymbols.size);
1750 struct partial_symtab *
1751 allocate_psymtab (const char *filename, struct objfile *objfile)
1753 struct partial_symtab *psymtab;
1755 if (objfile->free_psymtabs)
1757 psymtab = objfile->free_psymtabs;
1758 objfile->free_psymtabs = psymtab->next;
1761 psymtab = (struct partial_symtab *)
1762 obstack_alloc (&objfile->objfile_obstack,
1763 sizeof (struct partial_symtab));
1765 memset (psymtab, 0, sizeof (struct partial_symtab));
1767 = (const char *) bcache (filename, strlen (filename) + 1,
1768 objfile->per_bfd->filename_cache);
1769 psymtab->compunit_symtab = NULL;
1771 /* Prepend it to the psymtab list for the objfile it belongs to.
1772 Psymtabs are searched in most recent inserted -> least recent
1775 psymtab->next = objfile->psymtabs;
1776 objfile->psymtabs = psymtab;
1778 if (symtab_create_debug)
1780 /* Be a bit clever with debugging messages, and don't print objfile
1781 every time, only when it changes. */
1782 static char *last_objfile_name = NULL;
1784 if (last_objfile_name == NULL
1785 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1787 xfree (last_objfile_name);
1788 last_objfile_name = xstrdup (objfile_name (objfile));
1789 fprintf_unfiltered (gdb_stdlog,
1790 "Creating one or more psymtabs for objfile %s ...\n",
1793 fprintf_unfiltered (gdb_stdlog,
1794 "Created psymtab %s for module %s.\n",
1795 host_address_to_string (psymtab), filename);
1802 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1804 struct partial_symtab **prev_pst;
1807 Empty psymtabs happen as a result of header files which don't
1808 have any symbols in them. There can be a lot of them. But this
1809 check is wrong, in that a psymtab with N_SLINE entries but
1810 nothing else is not empty, but we don't realize that. Fixing
1811 that without slowing things down might be tricky. */
1813 /* First, snip it out of the psymtab chain. */
1815 prev_pst = &(objfile->psymtabs);
1816 while ((*prev_pst) != pst)
1817 prev_pst = &((*prev_pst)->next);
1818 (*prev_pst) = pst->next;
1820 /* Next, put it on a free list for recycling. */
1822 pst->next = objfile->free_psymtabs;
1823 objfile->free_psymtabs = pst;
1828 /* We need to pass a couple of items to the addrmap_foreach function,
1831 struct dump_psymtab_addrmap_data
1833 struct objfile *objfile;
1834 struct partial_symtab *psymtab;
1835 struct ui_file *outfile;
1837 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1838 If so, we want to print the next one as well (since the next addrmap
1839 entry defines the end of the range). */
1840 int previous_matched;
1843 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1846 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
1848 struct dump_psymtab_addrmap_data *data
1849 = (struct dump_psymtab_addrmap_data *) datap;
1850 struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
1851 struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
1852 const char *psymtab_address_or_end = NULL;
1856 if (data->psymtab == NULL
1857 || data->psymtab == addrmap_psymtab)
1858 psymtab_address_or_end = host_address_to_string (addrmap_psymtab);
1859 else if (data->previous_matched)
1860 psymtab_address_or_end = "<ends here>";
1862 if (data->psymtab == NULL
1863 || data->psymtab == addrmap_psymtab
1864 || data->previous_matched)
1866 fprintf_filtered (data->outfile, " %s%s %s\n",
1867 data->psymtab != NULL ? " " : "",
1868 paddress (gdbarch, start_addr),
1869 psymtab_address_or_end);
1872 data->previous_matched = (data->psymtab == NULL
1873 || data->psymtab == addrmap_psymtab);
1878 /* Helper function for maintenance_print_psymbols to print the addrmap
1879 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1882 dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
1883 struct ui_file *outfile)
1885 struct dump_psymtab_addrmap_data addrmap_dump_data;
1887 if ((psymtab == NULL
1888 || psymtab->psymtabs_addrmap_supported)
1889 && objfile->psymtabs_addrmap != NULL)
1891 addrmap_dump_data.objfile = objfile;
1892 addrmap_dump_data.psymtab = psymtab;
1893 addrmap_dump_data.outfile = outfile;
1894 addrmap_dump_data.previous_matched = 0;
1895 fprintf_filtered (outfile, "%sddress map:\n",
1896 psymtab == NULL ? "Entire a" : " A");
1897 addrmap_foreach (objfile->psymtabs_addrmap, dump_psymtab_addrmap_1,
1898 &addrmap_dump_data);
1903 maintenance_print_psymbols (char *args, int from_tty)
1905 struct ui_file *outfile = gdb_stdout;
1906 char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
1907 struct objfile *objfile;
1908 struct partial_symtab *ps;
1909 int i, outfile_idx, found;
1911 struct obj_section *section = NULL;
1915 gdb_argv argv (args);
1917 for (i = 0; argv != NULL && argv[i] != NULL; ++i)
1919 if (strcmp (argv[i], "-pc") == 0)
1921 if (argv[i + 1] == NULL)
1922 error (_("Missing pc value"));
1923 address_arg = argv[++i];
1925 else if (strcmp (argv[i], "-source") == 0)
1927 if (argv[i + 1] == NULL)
1928 error (_("Missing source file"));
1929 source_arg = argv[++i];
1931 else if (strcmp (argv[i], "-objfile") == 0)
1933 if (argv[i + 1] == NULL)
1934 error (_("Missing objfile name"));
1935 objfile_arg = argv[++i];
1937 else if (strcmp (argv[i], "--") == 0)
1939 /* End of options. */
1943 else if (argv[i][0] == '-')
1945 /* Future proofing: Don't allow OUTFILE to begin with "-". */
1946 error (_("Unknown option: %s"), argv[i]);
1953 if (address_arg != NULL && source_arg != NULL)
1954 error (_("Must specify at most one of -pc and -source"));
1956 stdio_file arg_outfile;
1958 if (argv != NULL && argv[outfile_idx] != NULL)
1960 if (argv[outfile_idx + 1] != NULL)
1961 error (_("Junk at end of command"));
1962 gdb::unique_xmalloc_ptr<char> outfile_name
1963 (tilde_expand (argv[outfile_idx]));
1964 if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
1965 perror_with_name (outfile_name.get ());
1966 outfile = &arg_outfile;
1969 if (address_arg != NULL)
1971 pc = parse_and_eval_address (address_arg);
1972 /* If we fail to find a section, that's ok, try the lookup anyway. */
1973 section = find_pc_section (pc);
1977 ALL_OBJFILES (objfile)
1979 int printed_objfile_header = 0;
1980 int print_for_objfile = 1;
1983 if (objfile_arg != NULL)
1985 = compare_filenames_for_search (objfile_name (objfile),
1987 if (!print_for_objfile)
1990 if (address_arg != NULL)
1992 struct bound_minimal_symbol msymbol = { NULL, NULL };
1994 /* We don't assume each pc has a unique objfile (this is for
1996 ps = find_pc_sect_psymtab (objfile, pc, section, msymbol);
1999 if (!printed_objfile_header)
2001 outfile->printf ("\nPartial symtabs for objfile %s\n",
2002 objfile_name (objfile));
2003 printed_objfile_header = 1;
2005 dump_psymtab (objfile, ps, outfile);
2006 dump_psymtab_addrmap (objfile, ps, outfile);
2012 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
2014 int print_for_source = 0;
2017 if (source_arg != NULL)
2020 = compare_filenames_for_search (ps->filename, source_arg);
2023 if (source_arg == NULL
2024 || print_for_source)
2026 if (!printed_objfile_header)
2028 outfile->printf ("\nPartial symtabs for objfile %s\n",
2029 objfile_name (objfile));
2030 printed_objfile_header = 1;
2032 dump_psymtab (objfile, ps, outfile);
2033 dump_psymtab_addrmap (objfile, ps, outfile);
2038 /* If we're printing all the objfile's symbols dump the full addrmap. */
2040 if (address_arg == NULL
2041 && source_arg == NULL
2042 && objfile->psymtabs_addrmap != NULL)
2044 outfile->puts ("\n");
2045 dump_psymtab_addrmap (objfile, NULL, outfile);
2051 if (address_arg != NULL)
2052 error (_("No partial symtab for address: %s"), address_arg);
2053 if (source_arg != NULL)
2054 error (_("No partial symtab for source file: %s"), source_arg);
2058 /* List all the partial symbol tables whose names match REGEXP (optional). */
2061 maintenance_info_psymtabs (char *regexp, int from_tty)
2063 struct program_space *pspace;
2064 struct objfile *objfile;
2069 ALL_PSPACES (pspace)
2070 ALL_PSPACE_OBJFILES (pspace, objfile)
2072 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2073 struct partial_symtab *psymtab;
2075 /* We don't want to print anything for this objfile until we
2076 actually find a symtab whose name matches. */
2077 int printed_objfile_start = 0;
2079 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
2084 || re_exec (psymtab->filename))
2086 if (! printed_objfile_start)
2088 printf_filtered ("{ objfile %s ", objfile_name (objfile));
2090 printf_filtered ("((struct objfile *) %s)\n",
2091 host_address_to_string (objfile));
2092 printed_objfile_start = 1;
2095 printf_filtered (" { psymtab %s ", psymtab->filename);
2097 printf_filtered ("((struct partial_symtab *) %s)\n",
2098 host_address_to_string (psymtab));
2100 printf_filtered (" readin %s\n",
2101 psymtab->readin ? "yes" : "no");
2102 printf_filtered (" fullname %s\n",
2104 ? psymtab->fullname : "(null)");
2105 printf_filtered (" text addresses ");
2106 fputs_filtered (paddress (gdbarch, psymtab->textlow),
2108 printf_filtered (" -- ");
2109 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
2111 printf_filtered ("\n");
2112 printf_filtered (" psymtabs_addrmap_supported %s\n",
2113 (psymtab->psymtabs_addrmap_supported
2115 printf_filtered (" globals ");
2116 if (psymtab->n_global_syms)
2118 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2119 host_address_to_string (objfile->global_psymbols.list
2120 + psymtab->globals_offset),
2121 psymtab->n_global_syms);
2124 printf_filtered ("(none)\n");
2125 printf_filtered (" statics ");
2126 if (psymtab->n_static_syms)
2128 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2129 host_address_to_string (objfile->static_psymbols.list
2130 + psymtab->statics_offset),
2131 psymtab->n_static_syms);
2134 printf_filtered ("(none)\n");
2135 printf_filtered (" dependencies ");
2136 if (psymtab->number_of_dependencies)
2140 printf_filtered ("{\n");
2141 for (i = 0; i < psymtab->number_of_dependencies; i++)
2143 struct partial_symtab *dep = psymtab->dependencies[i];
2145 /* Note the string concatenation there --- no comma. */
2146 printf_filtered (" psymtab %s "
2147 "((struct partial_symtab *) %s)\n",
2149 host_address_to_string (dep));
2151 printf_filtered (" }\n");
2154 printf_filtered ("(none)\n");
2155 printf_filtered (" }\n");
2159 if (printed_objfile_start)
2160 printf_filtered ("}\n");
2164 /* Check consistency of currently expanded psymtabs vs symtabs. */
2167 maintenance_check_psymtabs (char *ignore, int from_tty)
2170 struct partial_symbol **psym;
2171 struct compunit_symtab *cust = NULL;
2172 struct partial_symtab *ps;
2173 const struct blockvector *bv;
2174 struct objfile *objfile;
2178 ALL_PSYMTABS (objfile, ps)
2180 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2182 /* We don't call psymtab_to_symtab here because that may cause symtab
2183 expansion. When debugging a problem it helps if checkers leave
2184 things unchanged. */
2185 cust = ps->compunit_symtab;
2187 /* First do some checks that don't require the associated symtab. */
2188 if (ps->texthigh < ps->textlow)
2190 printf_filtered ("Psymtab ");
2191 puts_filtered (ps->filename);
2192 printf_filtered (" covers bad range ");
2193 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2194 printf_filtered (" - ");
2195 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2196 printf_filtered ("\n");
2200 /* Now do checks requiring the associated symtab. */
2203 bv = COMPUNIT_BLOCKVECTOR (cust);
2204 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2205 psym = objfile->static_psymbols.list + ps->statics_offset;
2206 length = ps->n_static_syms;
2209 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2210 SYMBOL_DOMAIN (*psym));
2213 printf_filtered ("Static symbol `");
2214 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2215 printf_filtered ("' only found in ");
2216 puts_filtered (ps->filename);
2217 printf_filtered (" psymtab\n");
2221 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2222 psym = objfile->global_psymbols.list + ps->globals_offset;
2223 length = ps->n_global_syms;
2226 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2227 SYMBOL_DOMAIN (*psym));
2230 printf_filtered ("Global symbol `");
2231 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2232 printf_filtered ("' only found in ");
2233 puts_filtered (ps->filename);
2234 printf_filtered (" psymtab\n");
2238 if (ps->texthigh != 0
2239 && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)))
2241 printf_filtered ("Psymtab ");
2242 puts_filtered (ps->filename);
2243 printf_filtered (" covers ");
2244 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2245 printf_filtered (" - ");
2246 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2247 printf_filtered (" but symtab covers only ");
2248 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2249 printf_filtered (" - ");
2250 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2251 printf_filtered ("\n");
2258 extern initialize_file_ftype _initialize_psymtab;
2261 _initialize_psymtab (void)
2263 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2264 Print dump of current partial symbol definitions.\n\
2265 Usage: mt print psymbols [-objfile objfile] [-pc address] [--] [outfile]\n\
2266 mt print psymbols [-objfile objfile] [-source source] [--] [outfile]\n\
2267 Entries in the partial symbol table are dumped to file OUTFILE,\n\
2268 or the terminal if OUTFILE is unspecified.\n\
2269 If ADDRESS is provided, dump only the file for that address.\n\
2270 If SOURCE is provided, dump only that file's symbols.\n\
2271 If OBJFILE is provided, dump only that file's minimal symbols."),
2272 &maintenanceprintlist);
2274 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2275 List the partial symbol tables for all object files.\n\
2276 This does not include information about individual partial symbols,\n\
2277 just the symbol table structures themselves."),
2278 &maintenanceinfolist);
2280 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2282 Check consistency of currently expanded psymtabs versus symtabs."),