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"
42 struct bcache *bcache;
45 static struct partial_symbol *match_partial_symbol (struct objfile *,
46 struct partial_symtab *,
48 const char *, domain_enum,
49 symbol_compare_ftype *,
50 symbol_compare_ftype *);
52 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
53 struct partial_symtab *,
57 static const char *psymtab_to_fullname (struct partial_symtab *ps);
59 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
60 struct partial_symtab *,
62 struct obj_section *);
64 static void fixup_psymbol_section (struct partial_symbol *psym,
65 struct objfile *objfile);
67 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
68 struct partial_symtab *pst);
70 /* Ensure that the partial symbols for OBJFILE have been loaded. This
71 function always returns its argument, as a convenience. */
74 require_partial_symbols (struct objfile *objfile, int verbose)
76 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
78 objfile->flags |= OBJF_PSYMTABS_READ;
80 if (objfile->sf->sym_read_psymbols)
84 printf_unfiltered (_("Reading symbols from %s..."),
85 objfile_name (objfile));
86 gdb_flush (gdb_stdout);
88 (*objfile->sf->sym_read_psymbols) (objfile);
90 /* Partial symbols list are not expected to changed after this
92 objfile->global_psymbols.shrink_to_fit ();
93 objfile->static_psymbols.shrink_to_fit ();
97 if (!objfile_has_symbols (objfile))
100 printf_unfiltered (_("(no debugging symbols found)..."));
104 printf_unfiltered (_("done.\n"));
112 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
115 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
116 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
120 /* We want to make sure this file always requires psymtabs. */
122 #undef ALL_OBJFILE_PSYMTABS
124 /* Traverse all psymtabs in all objfiles. */
126 #define ALL_PSYMTABS(objfile, p) \
127 ALL_OBJFILES (objfile) \
128 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
130 /* Helper function for psym_map_symtabs_matching_filename that
131 expands the symtabs and calls the iterator. */
134 partial_map_expand_apply (struct objfile *objfile,
136 const char *real_path,
137 struct partial_symtab *pst,
138 gdb::function_view<bool (symtab *)> callback)
140 struct compunit_symtab *last_made = objfile->compunit_symtabs;
142 /* Shared psymtabs should never be seen here. Instead they should
143 be handled properly by the caller. */
144 gdb_assert (pst->user == NULL);
146 /* Don't visit already-expanded psymtabs. */
150 /* This may expand more than one symtab, and we want to iterate over
152 psymtab_to_symtab (objfile, pst);
154 return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs,
155 last_made, callback);
158 /* Psymtab version of map_symtabs_matching_filename. See its definition in
159 the definition of quick_symbol_functions in symfile.h. */
162 psym_map_symtabs_matching_filename
163 (struct objfile *objfile,
165 const char *real_path,
166 gdb::function_view<bool (symtab *)> callback)
168 struct partial_symtab *pst;
169 const char *name_basename = lbasename (name);
171 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
173 /* We can skip shared psymtabs here, because any file name will be
174 attached to the unshared psymtab. */
175 if (pst->user != NULL)
178 /* Anonymous psymtabs don't have a file name. */
182 if (compare_filenames_for_search (pst->filename, name))
184 if (partial_map_expand_apply (objfile, name, real_path,
190 /* Before we invoke realpath, which can get expensive when many
191 files are involved, do a quick comparison of the basenames. */
192 if (! basenames_may_differ
193 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
196 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
198 if (partial_map_expand_apply (objfile, name, real_path,
204 /* If the user gave us an absolute path, try to find the file in
205 this symtab and use its absolute path. */
206 if (real_path != NULL)
208 gdb_assert (IS_ABSOLUTE_PATH (real_path));
209 gdb_assert (IS_ABSOLUTE_PATH (name));
210 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
212 if (partial_map_expand_apply (objfile, name, real_path,
223 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
224 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
226 static struct partial_symtab *
227 find_pc_sect_psymtab_closer (struct objfile *objfile,
228 CORE_ADDR pc, struct obj_section *section,
229 struct partial_symtab *pst,
230 struct bound_minimal_symbol msymbol)
232 struct partial_symtab *tpst;
233 struct partial_symtab *best_pst = pst;
234 CORE_ADDR best_addr = pst->textlow;
236 gdb_assert (!pst->psymtabs_addrmap_supported);
238 /* An objfile that has its functions reordered might have
239 many partial symbol tables containing the PC, but
240 we want the partial symbol table that contains the
241 function containing the PC. */
242 if (!(objfile->flags & OBJF_REORDERED)
243 && section == NULL) /* Can't validate section this way. */
246 if (msymbol.minsym == NULL)
249 /* The code range of partial symtabs sometimes overlap, so, in
250 the loop below, we need to check all partial symtabs and
251 find the one that fits better for the given PC address. We
252 select the partial symtab that contains a symbol whose
253 address is closest to the PC address. By closest we mean
254 that find_pc_sect_symbol returns the symbol with address
255 that is closest and still less than the given PC. */
256 for (tpst = pst; tpst != NULL; tpst = tpst->next)
258 if (pc >= tpst->textlow && pc < tpst->texthigh)
260 struct partial_symbol *p;
263 /* NOTE: This assumes that every psymbol has a
264 corresponding msymbol, which is not necessarily
265 true; the debug info might be much richer than the
266 object's symbol table. */
267 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
269 && (SYMBOL_VALUE_ADDRESS (p)
270 == BMSYMBOL_VALUE_ADDRESS (msymbol)))
273 /* Also accept the textlow value of a psymtab as a
274 "symbol", to provide some support for partial
275 symbol tables with line information but no debug
276 symbols (e.g. those produced by an assembler). */
278 this_addr = SYMBOL_VALUE_ADDRESS (p);
280 this_addr = tpst->textlow;
282 /* Check whether it is closer than our current
283 BEST_ADDR. Since this symbol address is
284 necessarily lower or equal to PC, the symbol closer
285 to PC is the symbol which address is the highest.
286 This way we return the psymtab which contains such
287 best match symbol. This can help in cases where the
288 symbol information/debuginfo is not complete, like
289 for instance on IRIX6 with gcc, where no debug info
290 is emitted for statics. (See also the nodebug.exp
292 if (this_addr > best_addr)
294 best_addr = this_addr;
302 /* Find which partial symtab contains PC and SECTION. Return NULL if
303 none. We return the psymtab that contains a symbol whose address
304 exactly matches PC, or, if we cannot find an exact match, the
305 psymtab that contains a symbol whose address is closest to PC. */
307 static struct partial_symtab *
308 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
309 struct obj_section *section,
310 struct bound_minimal_symbol msymbol)
312 struct partial_symtab *pst;
314 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
315 than the later used TEXTLOW/TEXTHIGH one. */
317 if (objfile->psymtabs_addrmap != NULL)
319 pst = ((struct partial_symtab *)
320 addrmap_find (objfile->psymtabs_addrmap, pc));
323 /* FIXME: addrmaps currently do not handle overlayed sections,
324 so fall back to the non-addrmap case if we're debugging
325 overlays and the addrmap returned the wrong section. */
326 if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
328 struct partial_symbol *p;
330 /* NOTE: This assumes that every psymbol has a
331 corresponding msymbol, which is not necessarily
332 true; the debug info might be much richer than the
333 object's symbol table. */
334 p = find_pc_sect_psymbol (objfile, pst, pc, section);
336 || (SYMBOL_VALUE_ADDRESS (p)
337 != BMSYMBOL_VALUE_ADDRESS (msymbol)))
341 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
342 PSYMTABS_ADDRMAP we used has already the best 1-byte
343 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
344 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
353 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
354 which still have no corresponding full SYMTABs read. But it is not
355 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
358 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
359 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
360 debug info type in single OBJFILE. */
362 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
363 if (!pst->psymtabs_addrmap_supported
364 && pc >= pst->textlow && pc < pst->texthigh)
366 struct partial_symtab *best_pst;
368 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
370 if (best_pst != NULL)
377 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
378 the definition of quick_symbol_functions in symfile.h. */
380 static struct compunit_symtab *
381 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
382 struct bound_minimal_symbol msymbol,
384 struct obj_section *section,
387 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
391 if (warn_if_readin && ps->readin)
392 /* Might want to error() here (in case symtab is corrupt and
393 will cause a core dump), but maybe we can successfully
394 continue, so let's not. */
396 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
397 paddress (get_objfile_arch (objfile), pc));
398 psymtab_to_symtab (objfile, ps);
399 return ps->compunit_symtab;
404 /* Find which partial symbol within a psymtab matches PC and SECTION.
405 Return NULL if none. */
407 static struct partial_symbol *
408 find_pc_sect_psymbol (struct objfile *objfile,
409 struct partial_symtab *psymtab, CORE_ADDR pc,
410 struct obj_section *section)
412 struct partial_symbol *best = NULL;
415 gdb_assert (psymtab != NULL);
417 /* Cope with programs that start at address 0. */
418 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
420 /* Search the global symbols as well as the static symbols, so that
421 find_pc_partial_function doesn't use a minimal symbol and thus
422 cache a bad endaddr. */
423 for (int i = 0; i < psymtab->n_global_syms; i++)
425 partial_symbol *p = objfile->global_psymbols[psymtab->globals_offset + i];
427 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
428 && PSYMBOL_CLASS (p) == LOC_BLOCK
429 && pc >= SYMBOL_VALUE_ADDRESS (p)
430 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
431 || (psymtab->textlow == 0
432 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
434 if (section != NULL) /* Match on a specific section. */
436 fixup_psymbol_section (p, objfile);
437 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
441 best_pc = SYMBOL_VALUE_ADDRESS (p);
446 for (int i = 0; i < psymtab->n_static_syms; i++)
448 partial_symbol *p = objfile->static_psymbols[psymtab->statics_offset + i];
450 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
451 && PSYMBOL_CLASS (p) == LOC_BLOCK
452 && pc >= SYMBOL_VALUE_ADDRESS (p)
453 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
454 || (psymtab->textlow == 0
455 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
457 if (section != NULL) /* Match on a specific section. */
459 fixup_psymbol_section (p, objfile);
460 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
464 best_pc = SYMBOL_VALUE_ADDRESS (p);
473 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
480 if (SYMBOL_SECTION (psym) >= 0)
483 gdb_assert (objfile);
485 switch (PSYMBOL_CLASS (psym))
490 addr = SYMBOL_VALUE_ADDRESS (psym);
493 /* Nothing else will be listed in the minsyms -- no use looking
498 fixup_section (&psym->ginfo, addr, objfile);
501 /* Psymtab version of lookup_symbol. See its definition in
502 the definition of quick_symbol_functions in symfile.h. */
504 static struct compunit_symtab *
505 psym_lookup_symbol (struct objfile *objfile,
506 int block_index, const char *name,
507 const domain_enum domain)
509 struct partial_symtab *ps;
510 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
511 struct compunit_symtab *stab_best = NULL;
513 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
515 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
516 psymtab_index, domain))
518 struct symbol *sym, *with_opaque = NULL;
519 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
520 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
521 is empty, we can assume it won't here because lookup_partial_symbol
523 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
524 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
526 sym = block_find_symbol (block, name, domain,
527 block_find_non_opaque_type_preferred,
530 /* Some caution must be observed with overloaded functions
531 and methods, since the index will not contain any overload
532 information (but NAME might contain it). */
535 && SYMBOL_MATCHES_SEARCH_NAME (sym, name))
537 if (with_opaque != NULL
538 && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, name))
541 /* Keep looking through other psymtabs. */
548 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
549 the global block of PST if GLOBAL, and otherwise the static block.
550 MATCH is the comparison operation that returns true iff MATCH (s,
551 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
552 non-null, the symbols in the block are assumed to be ordered
553 according to it (allowing binary search). It must be compatible
554 with MATCH. Returns the symbol, if found, and otherwise NULL. */
556 static struct partial_symbol *
557 match_partial_symbol (struct objfile *objfile,
558 struct partial_symtab *pst, int global,
559 const char *name, domain_enum domain,
560 symbol_compare_ftype *match,
561 symbol_compare_ftype *ordered_compare)
563 struct partial_symbol **start, **psym;
564 struct partial_symbol **top, **real_top, **bottom, **center;
565 int length = (global ? pst->n_global_syms : pst->n_static_syms);
566 int do_linear_search = 1;
571 &objfile->global_psymbols[pst->globals_offset] :
572 &objfile->static_psymbols[pst->statics_offset]);
574 if (global && ordered_compare) /* Can use a binary search. */
576 do_linear_search = 0;
578 /* Binary search. This search is guaranteed to end with center
579 pointing at the earliest partial symbol whose name might be
580 correct. At that point *all* partial symbols with an
581 appropriate name will be checked against the correct
585 top = start + length - 1;
589 center = bottom + (top - bottom) / 2;
590 gdb_assert (center < top);
591 if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
596 gdb_assert (top == bottom);
598 while (top <= real_top
599 && match (SYMBOL_SEARCH_NAME (*top), name) == 0)
601 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
602 SYMBOL_DOMAIN (*top), domain))
608 /* Can't use a binary search or else we found during the binary search that
609 we should also do a linear search. */
611 if (do_linear_search)
613 for (psym = start; psym < start + length; psym++)
615 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
616 SYMBOL_DOMAIN (*psym), domain)
617 && match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
625 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
626 not contain any method/function instance information (since this would
627 force reading type information while reading psymtabs). Therefore,
628 if NAME contains overload information, it must be stripped before searching
631 static gdb::unique_xmalloc_ptr<char>
632 psymtab_search_name (const char *name)
634 switch (current_language->la_language)
638 if (strchr (name, '('))
640 gdb::unique_xmalloc_ptr<char> ret = cp_remove_params (name);
652 return gdb::unique_xmalloc_ptr<char> (xstrdup (name));
655 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
656 Check the global symbols if GLOBAL, the static symbols if not. */
658 static struct partial_symbol *
659 lookup_partial_symbol (struct objfile *objfile,
660 struct partial_symtab *pst, const char *name,
661 int global, domain_enum domain)
663 struct partial_symbol **start, **psym;
664 struct partial_symbol **top, **real_top, **bottom, **center;
665 int length = (global ? pst->n_global_syms : pst->n_static_syms);
666 int do_linear_search = 1;
671 gdb::unique_xmalloc_ptr<char> search_name = psymtab_search_name (name);
673 &objfile->global_psymbols[pst->globals_offset] :
674 &objfile->static_psymbols[pst->statics_offset]);
676 if (global) /* This means we can use a binary search. */
678 do_linear_search = 0;
680 /* Binary search. This search is guaranteed to end with center
681 pointing at the earliest partial symbol whose name might be
682 correct. At that point *all* partial symbols with an
683 appropriate name will be checked against the correct
687 top = start + length - 1;
691 center = bottom + (top - bottom) / 2;
693 internal_error (__FILE__, __LINE__,
694 _("failed internal consistency check"));
695 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center),
696 search_name.get ()) >= 0)
705 if (!(top == bottom))
706 internal_error (__FILE__, __LINE__,
707 _("failed internal consistency check"));
709 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
710 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
711 while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top,
715 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
718 while (top <= real_top
719 && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name.get ()))
721 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
722 SYMBOL_DOMAIN (*top), domain))
728 /* Can't use a binary search or else we found during the binary search that
729 we should also do a linear search. */
731 if (do_linear_search)
733 for (psym = start; psym < start + length; psym++)
735 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
736 SYMBOL_DOMAIN (*psym), domain)
737 && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name.get ()))
745 /* Get the symbol table that corresponds to a partial_symtab.
746 This is fast after the first time you do it.
747 The result will be NULL if the primary symtab has no symbols,
748 which can happen. Otherwise the result is the primary symtab
749 that contains PST. */
751 static struct compunit_symtab *
752 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
754 /* If it is a shared psymtab, find an unshared psymtab that includes
755 it. Any such psymtab will do. */
756 while (pst->user != NULL)
759 /* If it's been looked up before, return it. */
760 if (pst->compunit_symtab)
761 return pst->compunit_symtab;
763 /* If it has not yet been read in, read it. */
766 scoped_restore decrementer = increment_reading_symtab ();
768 (*pst->read_symtab) (pst, objfile);
771 return pst->compunit_symtab;
774 /* Psymtab version of relocate. See its definition in
775 the definition of quick_symbol_functions in symfile.h. */
778 psym_relocate (struct objfile *objfile,
779 const struct section_offsets *new_offsets,
780 const struct section_offsets *delta)
782 struct partial_symbol **psym;
783 struct partial_symtab *p;
785 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
787 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
788 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
791 for (partial_symbol *psym : objfile->global_psymbols)
793 fixup_psymbol_section (psym, objfile);
794 if (SYMBOL_SECTION (psym) >= 0)
795 SYMBOL_VALUE_ADDRESS (psym) += ANOFFSET (delta, SYMBOL_SECTION (psym));
797 for (partial_symbol *psym : objfile->static_psymbols)
799 fixup_psymbol_section (psym, objfile);
800 if (SYMBOL_SECTION (psym) >= 0)
801 SYMBOL_VALUE_ADDRESS (psym) += ANOFFSET (delta, SYMBOL_SECTION (psym));
805 /* Psymtab version of find_last_source_symtab. See its definition in
806 the definition of quick_symbol_functions in symfile.h. */
808 static struct symtab *
809 psym_find_last_source_symtab (struct objfile *ofp)
811 struct partial_symtab *ps;
812 struct partial_symtab *cs_pst = NULL;
814 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
816 const char *name = ps->filename;
817 int len = strlen (name);
819 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
820 || strcmp (name, "<<C++-namespaces>>") == 0)))
828 internal_error (__FILE__, __LINE__,
829 _("select_source_symtab: "
830 "readin pst found and no symtabs."));
834 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
838 return compunit_primary_filetab (cust);
844 /* Psymtab version of forget_cached_source_info. See its definition in
845 the definition of quick_symbol_functions in symfile.h. */
848 psym_forget_cached_source_info (struct objfile *objfile)
850 struct partial_symtab *pst;
852 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
854 if (pst->fullname != NULL)
856 xfree (pst->fullname);
857 pst->fullname = NULL;
863 print_partial_symbols (struct gdbarch *gdbarch,
864 struct partial_symbol **p, int count, const char *what,
865 struct ui_file *outfile)
867 fprintf_filtered (outfile, " %s partial symbols:\n", what);
871 fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
872 if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
874 fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
876 fputs_filtered (", ", outfile);
877 switch (SYMBOL_DOMAIN (*p))
880 fputs_filtered ("undefined domain, ", outfile);
883 /* This is the usual thing -- don't print it. */
886 fputs_filtered ("struct domain, ", outfile);
889 fputs_filtered ("label domain, ", outfile);
892 fputs_filtered ("<invalid domain>, ", outfile);
895 switch (PSYMBOL_CLASS (*p))
898 fputs_filtered ("undefined", outfile);
901 fputs_filtered ("constant int", outfile);
904 fputs_filtered ("static", outfile);
907 fputs_filtered ("register", outfile);
910 fputs_filtered ("pass by value", outfile);
913 fputs_filtered ("pass by reference", outfile);
915 case LOC_REGPARM_ADDR:
916 fputs_filtered ("register address parameter", outfile);
919 fputs_filtered ("stack parameter", outfile);
922 fputs_filtered ("type", outfile);
925 fputs_filtered ("label", outfile);
928 fputs_filtered ("function", outfile);
930 case LOC_CONST_BYTES:
931 fputs_filtered ("constant bytes", outfile);
934 fputs_filtered ("unresolved", outfile);
936 case LOC_OPTIMIZED_OUT:
937 fputs_filtered ("optimized out", outfile);
940 fputs_filtered ("computed at runtime", outfile);
943 fputs_filtered ("<invalid location>", outfile);
946 fputs_filtered (", ", outfile);
947 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
948 fprintf_filtered (outfile, "\n");
954 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
955 struct ui_file *outfile)
957 struct gdbarch *gdbarch = get_objfile_arch (objfile);
960 if (psymtab->anonymous)
962 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
967 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
970 fprintf_filtered (outfile, "(object ");
971 gdb_print_host_address (psymtab, outfile);
972 fprintf_filtered (outfile, ")\n\n");
973 fprintf_unfiltered (outfile, " Read from object file %s (",
974 objfile_name (objfile));
975 gdb_print_host_address (objfile, outfile);
976 fprintf_unfiltered (outfile, ")\n");
980 fprintf_filtered (outfile,
981 " Full symtab was read (at ");
982 gdb_print_host_address (psymtab->compunit_symtab, outfile);
983 fprintf_filtered (outfile, " by function at ");
984 gdb_print_host_address (psymtab->read_symtab, outfile);
985 fprintf_filtered (outfile, ")\n");
988 fprintf_filtered (outfile, " Symbols cover text addresses ");
989 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
990 fprintf_filtered (outfile, "-");
991 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
992 fprintf_filtered (outfile, "\n");
993 fprintf_filtered (outfile, " Address map supported - %s.\n",
994 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
995 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
996 psymtab->number_of_dependencies);
997 for (i = 0; i < psymtab->number_of_dependencies; i++)
999 fprintf_filtered (outfile, " %d ", i);
1000 gdb_print_host_address (psymtab->dependencies[i], outfile);
1001 fprintf_filtered (outfile, " %s\n",
1002 psymtab->dependencies[i]->filename);
1004 if (psymtab->user != NULL)
1006 fprintf_filtered (outfile, " Shared partial symtab with user ");
1007 gdb_print_host_address (psymtab->user, outfile);
1008 fprintf_filtered (outfile, "\n");
1010 if (psymtab->n_global_syms > 0)
1012 print_partial_symbols (gdbarch,
1013 &objfile->global_psymbols[psymtab->globals_offset],
1014 psymtab->n_global_syms, "Global", outfile);
1016 if (psymtab->n_static_syms > 0)
1018 print_partial_symbols (gdbarch,
1019 &objfile->static_psymbols[psymtab->statics_offset],
1020 psymtab->n_static_syms, "Static", outfile);
1022 fprintf_filtered (outfile, "\n");
1025 /* Psymtab version of print_stats. See its definition in
1026 the definition of quick_symbol_functions in symfile.h. */
1029 psym_print_stats (struct objfile *objfile)
1032 struct partial_symtab *ps;
1035 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1037 if (ps->readin == 0)
1040 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1043 /* Psymtab version of dump. See its definition in
1044 the definition of quick_symbol_functions in symfile.h. */
1047 psym_dump (struct objfile *objfile)
1049 struct partial_symtab *psymtab;
1051 if (objfile->psymtabs)
1053 printf_filtered ("Psymtabs:\n");
1054 for (psymtab = objfile->psymtabs;
1056 psymtab = psymtab->next)
1058 printf_filtered ("%s at ",
1060 gdb_print_host_address (psymtab, gdb_stdout);
1061 printf_filtered (", ");
1064 printf_filtered ("\n\n");
1068 /* Psymtab version of expand_symtabs_for_function. See its definition in
1069 the definition of quick_symbol_functions in symfile.h. */
1072 psym_expand_symtabs_for_function (struct objfile *objfile,
1073 const char *func_name)
1075 struct partial_symtab *ps;
1077 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1082 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1084 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1086 psymtab_to_symtab (objfile, ps);
1090 /* Psymtab version of expand_all_symtabs. See its definition in
1091 the definition of quick_symbol_functions in symfile.h. */
1094 psym_expand_all_symtabs (struct objfile *objfile)
1096 struct partial_symtab *psymtab;
1098 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1100 psymtab_to_symtab (objfile, psymtab);
1104 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1105 the definition of quick_symbol_functions in symfile.h. */
1108 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1109 const char *fullname)
1111 struct partial_symtab *p;
1113 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1115 /* Anonymous psymtabs don't have a name of a source file. */
1119 /* psymtab_to_fullname tries to open the file which is slow.
1120 Don't call it if we know the basenames don't match. */
1121 if ((basenames_may_differ
1122 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1123 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1124 psymtab_to_symtab (objfile, p);
1128 /* Psymtab version of map_symbol_filenames. See its definition in
1129 the definition of quick_symbol_functions in symfile.h. */
1132 psym_map_symbol_filenames (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);
1187 gdb::unique_xmalloc_ptr<char> fullname;
1189 /* rewrite_source_path would be applied by find_and_open_source, we
1190 should report the pathname where GDB tried to find the file. */
1192 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1193 fullname.reset (xstrdup (ps->filename));
1195 fullname.reset (concat (ps->dirname, SLASH_STRING,
1196 ps->filename, (char *) NULL));
1198 ps->fullname = rewrite_source_path (fullname.get ()).release ();
1199 if (ps->fullname == NULL)
1200 ps->fullname = fullname.release ();
1204 return ps->fullname;
1207 /* For all symbols, s, in BLOCK that are in DOMAIN and match NAME
1208 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1209 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1210 ever returns non-zero, and otherwise returns 0. */
1213 map_block (const char *name, domain_enum domain, struct objfile *objfile,
1214 struct block *block,
1215 int (*callback) (struct block *, struct symbol *, void *),
1216 void *data, symbol_compare_ftype *match)
1218 struct block_iterator iter;
1221 for (sym = block_iter_match_first (block, name, match, &iter);
1222 sym != NULL; sym = block_iter_match_next (name, match, &iter))
1224 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1225 SYMBOL_DOMAIN (sym), domain))
1227 if (callback (block, sym, data))
1235 /* Psymtab version of map_matching_symbols. See its definition in
1236 the definition of quick_symbol_functions in symfile.h. */
1239 psym_map_matching_symbols (struct objfile *objfile,
1240 const char *name, domain_enum domain,
1242 int (*callback) (struct block *,
1243 struct symbol *, void *),
1245 symbol_compare_ftype *match,
1246 symbol_compare_ftype *ordered_compare)
1248 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1249 struct partial_symtab *ps;
1251 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1255 || match_partial_symbol (objfile, ps, global, name, domain, match,
1258 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1259 struct block *block;
1263 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1264 if (map_block (name, domain, objfile, block,
1265 callback, data, match))
1267 if (callback (block, NULL, data))
1273 /* A helper for psym_expand_symtabs_matching that handles searching
1274 included psymtabs. This returns true if a symbol is found, and
1275 false otherwise. It also updates the 'searched_flag' on the
1276 various psymtabs that it searches. */
1279 recursively_search_psymtabs
1280 (struct partial_symtab *ps, struct objfile *objfile, enum search_domain kind,
1281 gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
1284 enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
1287 if (ps->searched_flag != PST_NOT_SEARCHED)
1288 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1290 /* Recurse into shared psymtabs first, because they may have already
1291 been searched, and this could save some time. */
1292 for (i = 0; i < ps->number_of_dependencies; ++i)
1296 /* Skip non-shared dependencies, these are handled elsewhere. */
1297 if (ps->dependencies[i]->user == NULL)
1300 r = recursively_search_psymtabs (ps->dependencies[i],
1301 objfile, kind, sym_matcher);
1304 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1309 partial_symbol **gbound
1310 = &objfile->global_psymbols[ps->globals_offset + ps->n_global_syms];
1311 partial_symbol **sbound
1312 = &objfile->static_psymbols[ps->statics_offset + ps->n_static_syms];
1313 partial_symbol **bound = gbound;
1315 /* Go through all of the symbols stored in a partial
1316 symtab in one loop. */
1317 partial_symbol **psym = &objfile->global_psymbols[ps->globals_offset];
1322 if (bound == gbound && ps->n_static_syms != 0)
1324 psym = &objfile->static_psymbols[ps->statics_offset];
1335 if ((kind == ALL_DOMAIN
1336 || (kind == VARIABLES_DOMAIN
1337 && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF
1338 && PSYMBOL_CLASS (*psym) != LOC_BLOCK)
1339 || (kind == FUNCTIONS_DOMAIN
1340 && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
1341 || (kind == TYPES_DOMAIN
1342 && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
1343 && sym_matcher (SYMBOL_SEARCH_NAME (*psym)))
1345 /* Found a match, so notify our caller. */
1346 result = PST_SEARCHED_AND_FOUND;
1353 ps->searched_flag = result;
1354 return result == PST_SEARCHED_AND_FOUND;
1357 /* Psymtab version of expand_symtabs_matching. See its definition in
1358 the definition of quick_symbol_functions in symfile.h. */
1361 psym_expand_symtabs_matching
1362 (struct objfile *objfile,
1363 gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
1364 gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
1365 gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
1366 enum search_domain kind)
1368 struct partial_symtab *ps;
1370 /* Clear the search flags. */
1371 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1373 ps->searched_flag = PST_NOT_SEARCHED;
1376 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1383 /* We skip shared psymtabs because file-matching doesn't apply
1384 to them; but we search them later in the loop. */
1385 if (ps->user != NULL)
1395 match = file_matcher (ps->filename, false);
1398 /* Before we invoke realpath, which can get expensive when many
1399 files are involved, do a quick comparison of the basenames. */
1400 if (basenames_may_differ
1401 || file_matcher (lbasename (ps->filename), true))
1402 match = file_matcher (psymtab_to_fullname (ps), false);
1408 if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher))
1410 struct compunit_symtab *symtab =
1411 psymtab_to_symtab (objfile, ps);
1413 if (expansion_notify != NULL)
1414 expansion_notify (symtab);
1419 /* Psymtab version of has_symbols. See its definition in
1420 the definition of quick_symbol_functions in symfile.h. */
1423 psym_has_symbols (struct objfile *objfile)
1425 return objfile->psymtabs != NULL;
1428 const struct quick_symbol_functions psym_functions =
1431 psym_find_last_source_symtab,
1432 psym_forget_cached_source_info,
1433 psym_map_symtabs_matching_filename,
1438 psym_expand_symtabs_for_function,
1439 psym_expand_all_symtabs,
1440 psym_expand_symtabs_with_fullname,
1441 psym_map_matching_symbols,
1442 psym_expand_symtabs_matching,
1443 psym_find_pc_sect_compunit_symtab,
1444 psym_map_symbol_filenames
1450 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1452 /* Sort the global list; don't sort the static list. */
1453 auto begin = objfile->global_psymbols.begin ();
1454 std::advance (begin, pst->globals_offset);
1456 /* The psymbols for this partial_symtab are currently at the end of the
1458 auto end = objfile->global_psymbols.end ();
1460 std::sort (begin, end, [] (partial_symbol *s1, partial_symbol *s2)
1462 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (s1),
1463 SYMBOL_SEARCH_NAME (s2)) < 0;
1467 /* Allocate and partially fill a partial symtab. It will be
1468 completely filled at the end of the symbol list.
1470 FILENAME is the name of the symbol-file we are reading from. */
1472 struct partial_symtab *
1473 start_psymtab_common (struct objfile *objfile,
1474 const char *filename,
1476 std::vector<partial_symbol *> &global_psymbols,
1477 std::vector<partial_symbol *> &static_psymbols)
1479 struct partial_symtab *psymtab;
1481 psymtab = allocate_psymtab (filename, objfile);
1482 psymtab->textlow = textlow;
1483 psymtab->texthigh = psymtab->textlow; /* default */
1484 psymtab->globals_offset = global_psymbols.size ();
1485 psymtab->statics_offset = static_psymbols.size ();
1489 /* Perform "finishing up" operations of a partial symtab. */
1492 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
1494 pst->n_global_syms = objfile->global_psymbols.size () - pst->globals_offset;
1495 pst->n_static_syms = objfile->static_psymbols.size () - pst->statics_offset;
1497 sort_pst_symbols (objfile, pst);
1500 /* Calculate a hash code for the given partial symbol. The hash is
1501 calculated using the symbol's value, language, domain, class
1502 and name. These are the values which are set by
1503 add_psymbol_to_bcache. */
1505 static unsigned long
1506 psymbol_hash (const void *addr, int length)
1508 unsigned long h = 0;
1509 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1510 unsigned int lang = psymbol->ginfo.language;
1511 unsigned int domain = PSYMBOL_DOMAIN (psymbol);
1512 unsigned int theclass = PSYMBOL_CLASS (psymbol);
1514 h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
1515 h = hash_continue (&lang, sizeof (unsigned int), h);
1516 h = hash_continue (&domain, sizeof (unsigned int), h);
1517 h = hash_continue (&theclass, sizeof (unsigned int), h);
1518 h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
1523 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1524 For the comparison this function uses a symbols value,
1525 language, domain, class and name. */
1528 psymbol_compare (const void *addr1, const void *addr2, int length)
1530 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1531 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1533 return (memcmp (&sym1->ginfo.value, &sym2->ginfo.value,
1534 sizeof (sym1->ginfo.value)) == 0
1535 && sym1->ginfo.language == sym2->ginfo.language
1536 && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
1537 && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
1538 && sym1->ginfo.name == sym2->ginfo.name);
1541 /* Initialize a partial symbol bcache. */
1543 struct psymbol_bcache *
1544 psymbol_bcache_init (void)
1546 struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
1548 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1552 /* Free a partial symbol bcache. */
1555 psymbol_bcache_free (struct psymbol_bcache *bcache)
1560 bcache_xfree (bcache->bcache);
1564 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1567 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1569 return bcache->bcache;
1572 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1573 symbol before, add a copy to BCACHE. In either case, return a pointer
1574 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1575 1 in case of new entry or 0 if returning an old entry. */
1577 static struct partial_symbol *
1578 psymbol_bcache_full (struct partial_symbol *sym,
1579 struct psymbol_bcache *bcache,
1582 return ((struct partial_symbol *)
1583 bcache_full (sym, sizeof (struct partial_symbol), bcache->bcache,
1587 /* Helper function, initialises partial symbol structure and stashes
1588 it into objfile's bcache. Note that our caching mechanism will
1589 use all fields of struct partial_symbol to determine hash value of the
1590 structure. In other words, having two symbols with the same name but
1591 different domain (or address) is possible and correct. */
1593 static struct partial_symbol *
1594 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1596 enum address_class theclass,
1598 enum language language, struct objfile *objfile,
1601 struct partial_symbol psymbol;
1603 /* We must ensure that the entire struct has been zeroed before
1604 assigning to it, because an assignment may not touch some of the
1606 memset (&psymbol, 0, sizeof (psymbol));
1608 SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
1609 SYMBOL_SECTION (&psymbol) = -1;
1610 SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack);
1611 PSYMBOL_DOMAIN (&psymbol) = domain;
1612 PSYMBOL_CLASS (&psymbol) = theclass;
1614 SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
1616 /* Stash the partial symbol away in the cache. */
1617 return psymbol_bcache_full (&psymbol, objfile->psymbol_cache, added);
1620 /* Helper function, adds partial symbol to the given partial symbol list. */
1623 append_psymbol_to_list (std::vector<partial_symbol *> *list,
1624 struct partial_symbol *psym,
1625 struct objfile *objfile)
1627 list->push_back (psym);
1628 OBJSTAT (objfile, n_psyms++);
1631 /* Add a symbol with a long value to a psymtab.
1632 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1633 The only value we need to store for psyms is an address.
1634 For all other psyms pass zero for COREADDR.
1635 Return the partial symbol that has been added. */
1638 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1640 enum address_class theclass,
1641 std::vector<partial_symbol *> *list,
1643 enum language language, struct objfile *objfile)
1645 struct partial_symbol *psym;
1649 /* Stash the partial symbol away in the cache. */
1650 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, theclass,
1651 coreaddr, language, objfile, &added);
1653 /* Do not duplicate global partial symbols. */
1654 if (list == &objfile->global_psymbols
1658 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1659 append_psymbol_to_list (list, psym, objfile);
1662 /* Initialize storage for partial symbols. */
1665 init_psymbol_list (struct objfile *objfile, int total_symbols)
1667 /* Free any previously allocated psymbol lists. */
1668 objfile->global_psymbols.clear ();
1669 objfile->static_psymbols.clear ();
1671 /* Current best guess is that approximately a twentieth
1672 of the total symbols (in a debugging file) are global or static
1673 oriented symbols, then multiply that by slop factor of two. */
1674 objfile->global_psymbols.reserve (total_symbols / 10);
1675 objfile->static_psymbols.reserve (total_symbols / 10);
1678 struct partial_symtab *
1679 allocate_psymtab (const char *filename, struct objfile *objfile)
1681 struct partial_symtab *psymtab;
1683 if (objfile->free_psymtabs)
1685 psymtab = objfile->free_psymtabs;
1686 objfile->free_psymtabs = psymtab->next;
1689 psymtab = (struct partial_symtab *)
1690 obstack_alloc (&objfile->objfile_obstack,
1691 sizeof (struct partial_symtab));
1693 memset (psymtab, 0, sizeof (struct partial_symtab));
1695 = (const char *) bcache (filename, strlen (filename) + 1,
1696 objfile->per_bfd->filename_cache);
1697 psymtab->compunit_symtab = NULL;
1699 /* Prepend it to the psymtab list for the objfile it belongs to.
1700 Psymtabs are searched in most recent inserted -> least recent
1703 psymtab->next = objfile->psymtabs;
1704 objfile->psymtabs = psymtab;
1706 if (symtab_create_debug)
1708 /* Be a bit clever with debugging messages, and don't print objfile
1709 every time, only when it changes. */
1710 static char *last_objfile_name = NULL;
1712 if (last_objfile_name == NULL
1713 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1715 xfree (last_objfile_name);
1716 last_objfile_name = xstrdup (objfile_name (objfile));
1717 fprintf_unfiltered (gdb_stdlog,
1718 "Creating one or more psymtabs for objfile %s ...\n",
1721 fprintf_unfiltered (gdb_stdlog,
1722 "Created psymtab %s for module %s.\n",
1723 host_address_to_string (psymtab), filename);
1730 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1732 struct partial_symtab **prev_pst;
1735 Empty psymtabs happen as a result of header files which don't
1736 have any symbols in them. There can be a lot of them. But this
1737 check is wrong, in that a psymtab with N_SLINE entries but
1738 nothing else is not empty, but we don't realize that. Fixing
1739 that without slowing things down might be tricky. */
1741 /* First, snip it out of the psymtab chain. */
1743 prev_pst = &(objfile->psymtabs);
1744 while ((*prev_pst) != pst)
1745 prev_pst = &((*prev_pst)->next);
1746 (*prev_pst) = pst->next;
1748 /* Next, put it on a free list for recycling. */
1750 pst->next = objfile->free_psymtabs;
1751 objfile->free_psymtabs = pst;
1756 /* We need to pass a couple of items to the addrmap_foreach function,
1759 struct dump_psymtab_addrmap_data
1761 struct objfile *objfile;
1762 struct partial_symtab *psymtab;
1763 struct ui_file *outfile;
1765 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1766 If so, we want to print the next one as well (since the next addrmap
1767 entry defines the end of the range). */
1768 int previous_matched;
1771 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1774 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
1776 struct dump_psymtab_addrmap_data *data
1777 = (struct dump_psymtab_addrmap_data *) datap;
1778 struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
1779 struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
1780 const char *psymtab_address_or_end = NULL;
1784 if (data->psymtab == NULL
1785 || data->psymtab == addrmap_psymtab)
1786 psymtab_address_or_end = host_address_to_string (addrmap_psymtab);
1787 else if (data->previous_matched)
1788 psymtab_address_or_end = "<ends here>";
1790 if (data->psymtab == NULL
1791 || data->psymtab == addrmap_psymtab
1792 || data->previous_matched)
1794 fprintf_filtered (data->outfile, " %s%s %s\n",
1795 data->psymtab != NULL ? " " : "",
1796 paddress (gdbarch, start_addr),
1797 psymtab_address_or_end);
1800 data->previous_matched = (data->psymtab == NULL
1801 || data->psymtab == addrmap_psymtab);
1806 /* Helper function for maintenance_print_psymbols to print the addrmap
1807 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1810 dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
1811 struct ui_file *outfile)
1813 struct dump_psymtab_addrmap_data addrmap_dump_data;
1815 if ((psymtab == NULL
1816 || psymtab->psymtabs_addrmap_supported)
1817 && objfile->psymtabs_addrmap != NULL)
1819 addrmap_dump_data.objfile = objfile;
1820 addrmap_dump_data.psymtab = psymtab;
1821 addrmap_dump_data.outfile = outfile;
1822 addrmap_dump_data.previous_matched = 0;
1823 fprintf_filtered (outfile, "%sddress map:\n",
1824 psymtab == NULL ? "Entire a" : " A");
1825 addrmap_foreach (objfile->psymtabs_addrmap, dump_psymtab_addrmap_1,
1826 &addrmap_dump_data);
1831 maintenance_print_psymbols (const char *args, int from_tty)
1833 struct ui_file *outfile = gdb_stdout;
1834 char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
1835 struct objfile *objfile;
1836 struct partial_symtab *ps;
1837 int i, outfile_idx, found;
1839 struct obj_section *section = NULL;
1843 gdb_argv argv (args);
1845 for (i = 0; argv != NULL && argv[i] != NULL; ++i)
1847 if (strcmp (argv[i], "-pc") == 0)
1849 if (argv[i + 1] == NULL)
1850 error (_("Missing pc value"));
1851 address_arg = argv[++i];
1853 else if (strcmp (argv[i], "-source") == 0)
1855 if (argv[i + 1] == NULL)
1856 error (_("Missing source file"));
1857 source_arg = argv[++i];
1859 else if (strcmp (argv[i], "-objfile") == 0)
1861 if (argv[i + 1] == NULL)
1862 error (_("Missing objfile name"));
1863 objfile_arg = argv[++i];
1865 else if (strcmp (argv[i], "--") == 0)
1867 /* End of options. */
1871 else if (argv[i][0] == '-')
1873 /* Future proofing: Don't allow OUTFILE to begin with "-". */
1874 error (_("Unknown option: %s"), argv[i]);
1881 if (address_arg != NULL && source_arg != NULL)
1882 error (_("Must specify at most one of -pc and -source"));
1884 stdio_file arg_outfile;
1886 if (argv != NULL && argv[outfile_idx] != NULL)
1888 if (argv[outfile_idx + 1] != NULL)
1889 error (_("Junk at end of command"));
1890 gdb::unique_xmalloc_ptr<char> outfile_name
1891 (tilde_expand (argv[outfile_idx]));
1892 if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
1893 perror_with_name (outfile_name.get ());
1894 outfile = &arg_outfile;
1897 if (address_arg != NULL)
1899 pc = parse_and_eval_address (address_arg);
1900 /* If we fail to find a section, that's ok, try the lookup anyway. */
1901 section = find_pc_section (pc);
1905 ALL_OBJFILES (objfile)
1907 int printed_objfile_header = 0;
1908 int print_for_objfile = 1;
1911 if (objfile_arg != NULL)
1913 = compare_filenames_for_search (objfile_name (objfile),
1915 if (!print_for_objfile)
1918 if (address_arg != NULL)
1920 struct bound_minimal_symbol msymbol = { NULL, NULL };
1922 /* We don't assume each pc has a unique objfile (this is for
1924 ps = find_pc_sect_psymtab (objfile, pc, section, msymbol);
1927 if (!printed_objfile_header)
1929 outfile->printf ("\nPartial symtabs for objfile %s\n",
1930 objfile_name (objfile));
1931 printed_objfile_header = 1;
1933 dump_psymtab (objfile, ps, outfile);
1934 dump_psymtab_addrmap (objfile, ps, outfile);
1940 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1942 int print_for_source = 0;
1945 if (source_arg != NULL)
1948 = compare_filenames_for_search (ps->filename, source_arg);
1951 if (source_arg == NULL
1952 || print_for_source)
1954 if (!printed_objfile_header)
1956 outfile->printf ("\nPartial symtabs for objfile %s\n",
1957 objfile_name (objfile));
1958 printed_objfile_header = 1;
1960 dump_psymtab (objfile, ps, outfile);
1961 dump_psymtab_addrmap (objfile, ps, outfile);
1966 /* If we're printing all the objfile's symbols dump the full addrmap. */
1968 if (address_arg == NULL
1969 && source_arg == NULL
1970 && objfile->psymtabs_addrmap != NULL)
1972 outfile->puts ("\n");
1973 dump_psymtab_addrmap (objfile, NULL, outfile);
1979 if (address_arg != NULL)
1980 error (_("No partial symtab for address: %s"), address_arg);
1981 if (source_arg != NULL)
1982 error (_("No partial symtab for source file: %s"), source_arg);
1986 /* List all the partial symbol tables whose names match REGEXP (optional). */
1989 maintenance_info_psymtabs (const char *regexp, int from_tty)
1991 struct program_space *pspace;
1992 struct objfile *objfile;
1997 ALL_PSPACES (pspace)
1998 ALL_PSPACE_OBJFILES (pspace, objfile)
2000 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2001 struct partial_symtab *psymtab;
2003 /* We don't want to print anything for this objfile until we
2004 actually find a symtab whose name matches. */
2005 int printed_objfile_start = 0;
2007 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
2012 || re_exec (psymtab->filename))
2014 if (! printed_objfile_start)
2016 printf_filtered ("{ objfile %s ", objfile_name (objfile));
2018 printf_filtered ("((struct objfile *) %s)\n",
2019 host_address_to_string (objfile));
2020 printed_objfile_start = 1;
2023 printf_filtered (" { psymtab %s ", psymtab->filename);
2025 printf_filtered ("((struct partial_symtab *) %s)\n",
2026 host_address_to_string (psymtab));
2028 printf_filtered (" readin %s\n",
2029 psymtab->readin ? "yes" : "no");
2030 printf_filtered (" fullname %s\n",
2032 ? psymtab->fullname : "(null)");
2033 printf_filtered (" text addresses ");
2034 fputs_filtered (paddress (gdbarch, psymtab->textlow),
2036 printf_filtered (" -- ");
2037 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
2039 printf_filtered ("\n");
2040 printf_filtered (" psymtabs_addrmap_supported %s\n",
2041 (psymtab->psymtabs_addrmap_supported
2043 printf_filtered (" globals ");
2044 if (psymtab->n_global_syms)
2046 auto p = &objfile->global_psymbols[psymtab->globals_offset];
2048 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2049 host_address_to_string (p),
2050 psymtab->n_global_syms);
2053 printf_filtered ("(none)\n");
2054 printf_filtered (" statics ");
2055 if (psymtab->n_static_syms)
2057 auto p = &objfile->static_psymbols[psymtab->statics_offset];
2059 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2060 host_address_to_string (p),
2061 psymtab->n_static_syms);
2064 printf_filtered ("(none)\n");
2065 printf_filtered (" dependencies ");
2066 if (psymtab->number_of_dependencies)
2070 printf_filtered ("{\n");
2071 for (i = 0; i < psymtab->number_of_dependencies; i++)
2073 struct partial_symtab *dep = psymtab->dependencies[i];
2075 /* Note the string concatenation there --- no comma. */
2076 printf_filtered (" psymtab %s "
2077 "((struct partial_symtab *) %s)\n",
2079 host_address_to_string (dep));
2081 printf_filtered (" }\n");
2084 printf_filtered ("(none)\n");
2085 printf_filtered (" }\n");
2089 if (printed_objfile_start)
2090 printf_filtered ("}\n");
2094 /* Check consistency of currently expanded psymtabs vs symtabs. */
2097 maintenance_check_psymtabs (const char *ignore, int from_tty)
2100 struct compunit_symtab *cust = NULL;
2101 struct partial_symtab *ps;
2102 const struct blockvector *bv;
2103 struct objfile *objfile;
2107 ALL_PSYMTABS (objfile, ps)
2109 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2111 /* We don't call psymtab_to_symtab here because that may cause symtab
2112 expansion. When debugging a problem it helps if checkers leave
2113 things unchanged. */
2114 cust = ps->compunit_symtab;
2116 /* First do some checks that don't require the associated symtab. */
2117 if (ps->texthigh < ps->textlow)
2119 printf_filtered ("Psymtab ");
2120 puts_filtered (ps->filename);
2121 printf_filtered (" covers bad range ");
2122 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2123 printf_filtered (" - ");
2124 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2125 printf_filtered ("\n");
2129 /* Now do checks requiring the associated symtab. */
2132 bv = COMPUNIT_BLOCKVECTOR (cust);
2133 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2134 partial_symbol **psym = &objfile->static_psymbols[ps->statics_offset];
2135 length = ps->n_static_syms;
2138 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2139 SYMBOL_DOMAIN (*psym));
2142 printf_filtered ("Static symbol `");
2143 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2144 printf_filtered ("' only found in ");
2145 puts_filtered (ps->filename);
2146 printf_filtered (" psymtab\n");
2150 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2151 psym = &objfile->global_psymbols[ps->globals_offset];
2152 length = ps->n_global_syms;
2155 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2156 SYMBOL_DOMAIN (*psym));
2159 printf_filtered ("Global symbol `");
2160 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2161 printf_filtered ("' only found in ");
2162 puts_filtered (ps->filename);
2163 printf_filtered (" psymtab\n");
2167 if (ps->texthigh != 0
2168 && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)))
2170 printf_filtered ("Psymtab ");
2171 puts_filtered (ps->filename);
2172 printf_filtered (" covers ");
2173 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2174 printf_filtered (" - ");
2175 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2176 printf_filtered (" but symtab covers only ");
2177 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2178 printf_filtered (" - ");
2179 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2180 printf_filtered ("\n");
2186 _initialize_psymtab (void)
2188 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2189 Print dump of current partial symbol definitions.\n\
2190 Usage: mt print psymbols [-objfile objfile] [-pc address] [--] [outfile]\n\
2191 mt print psymbols [-objfile objfile] [-source source] [--] [outfile]\n\
2192 Entries in the partial symbol table are dumped to file OUTFILE,\n\
2193 or the terminal if OUTFILE is unspecified.\n\
2194 If ADDRESS is provided, dump only the file for that address.\n\
2195 If SOURCE is provided, dump only that file's symbols.\n\
2196 If OBJFILE is provided, dump only that file's minimal symbols."),
2197 &maintenanceprintlist);
2199 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2200 List the partial symbol tables for all object files.\n\
2201 This does not include information about individual partial symbols,\n\
2202 just the symbol table structures themselves."),
2203 &maintenanceinfolist);
2205 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2207 Check consistency of currently expanded psymtabs versus symtabs."),