1 /* Partial symbol tables.
3 Copyright (C) 2009-2018 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"
43 struct bcache *bcache;
46 static struct partial_symbol *match_partial_symbol (struct objfile *,
47 struct partial_symtab *,
49 const char *, domain_enum,
50 symbol_name_match_type,
51 symbol_compare_ftype *);
53 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
54 struct partial_symtab *,
58 static const char *psymtab_to_fullname (struct partial_symtab *ps);
60 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
61 struct partial_symtab *,
63 struct obj_section *);
65 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
66 struct partial_symtab *pst);
68 /* Ensure that the partial symbols for OBJFILE have been loaded. This
69 function always returns its argument, as a convenience. */
72 require_partial_symbols (struct objfile *objfile, int verbose)
74 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
76 objfile->flags |= OBJF_PSYMTABS_READ;
78 if (objfile->sf->sym_read_psymbols)
81 printf_filtered (_("Reading symbols from %s...\n"),
82 objfile_name (objfile));
83 (*objfile->sf->sym_read_psymbols) (objfile);
85 /* Partial symbols list are not expected to changed after this
87 objfile->global_psymbols.shrink_to_fit ();
88 objfile->static_psymbols.shrink_to_fit ();
90 if (verbose && !objfile_has_symbols (objfile))
91 printf_filtered (_("(No debugging symbols found in %s)\n"),
92 objfile_name (objfile));
99 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
102 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
103 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
107 /* We want to make sure this file always requires psymtabs. */
109 #undef ALL_OBJFILE_PSYMTABS
111 /* Traverse all psymtabs in all objfiles. */
113 #define ALL_PSYMTABS(objfile, p) \
114 ALL_OBJFILES (objfile) \
115 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
117 /* Helper function for psym_map_symtabs_matching_filename that
118 expands the symtabs and calls the iterator. */
121 partial_map_expand_apply (struct objfile *objfile,
123 const char *real_path,
124 struct partial_symtab *pst,
125 gdb::function_view<bool (symtab *)> callback)
127 struct compunit_symtab *last_made = objfile->compunit_symtabs;
129 /* Shared psymtabs should never be seen here. Instead they should
130 be handled properly by the caller. */
131 gdb_assert (pst->user == NULL);
133 /* Don't visit already-expanded psymtabs. */
137 /* This may expand more than one symtab, and we want to iterate over
139 psymtab_to_symtab (objfile, pst);
141 return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs,
142 last_made, callback);
145 /* Psymtab version of map_symtabs_matching_filename. See its definition in
146 the definition of quick_symbol_functions in symfile.h. */
149 psym_map_symtabs_matching_filename
150 (struct objfile *objfile,
152 const char *real_path,
153 gdb::function_view<bool (symtab *)> callback)
155 struct partial_symtab *pst;
156 const char *name_basename = lbasename (name);
158 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
160 /* We can skip shared psymtabs here, because any file name will be
161 attached to the unshared psymtab. */
162 if (pst->user != NULL)
165 /* Anonymous psymtabs don't have a file name. */
169 if (compare_filenames_for_search (pst->filename, name))
171 if (partial_map_expand_apply (objfile, name, real_path,
177 /* Before we invoke realpath, which can get expensive when many
178 files are involved, do a quick comparison of the basenames. */
179 if (! basenames_may_differ
180 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
183 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
185 if (partial_map_expand_apply (objfile, name, real_path,
191 /* If the user gave us an absolute path, try to find the file in
192 this symtab and use its absolute path. */
193 if (real_path != NULL)
195 gdb_assert (IS_ABSOLUTE_PATH (real_path));
196 gdb_assert (IS_ABSOLUTE_PATH (name));
197 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
199 if (partial_map_expand_apply (objfile, name, real_path,
210 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
211 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
213 static struct partial_symtab *
214 find_pc_sect_psymtab_closer (struct objfile *objfile,
215 CORE_ADDR pc, struct obj_section *section,
216 struct partial_symtab *pst,
217 struct bound_minimal_symbol msymbol)
219 struct partial_symtab *tpst;
220 struct partial_symtab *best_pst = pst;
221 CORE_ADDR best_addr = pst->text_low (objfile);
223 gdb_assert (!pst->psymtabs_addrmap_supported);
225 /* An objfile that has its functions reordered might have
226 many partial symbol tables containing the PC, but
227 we want the partial symbol table that contains the
228 function containing the PC. */
229 if (!(objfile->flags & OBJF_REORDERED)
230 && section == NULL) /* Can't validate section this way. */
233 if (msymbol.minsym == NULL)
236 /* The code range of partial symtabs sometimes overlap, so, in
237 the loop below, we need to check all partial symtabs and
238 find the one that fits better for the given PC address. We
239 select the partial symtab that contains a symbol whose
240 address is closest to the PC address. By closest we mean
241 that find_pc_sect_symbol returns the symbol with address
242 that is closest and still less than the given PC. */
243 for (tpst = pst; tpst != NULL; tpst = tpst->next)
245 if (pc >= tpst->text_low (objfile) && pc < tpst->text_high (objfile))
247 struct partial_symbol *p;
250 /* NOTE: This assumes that every psymbol has a
251 corresponding msymbol, which is not necessarily
252 true; the debug info might be much richer than the
253 object's symbol table. */
254 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
256 && (p->address (objfile) == BMSYMBOL_VALUE_ADDRESS (msymbol)))
259 /* Also accept the textlow value of a psymtab as a
260 "symbol", to provide some support for partial
261 symbol tables with line information but no debug
262 symbols (e.g. those produced by an assembler). */
264 this_addr = p->address (objfile);
266 this_addr = tpst->text_low (objfile);
268 /* Check whether it is closer than our current
269 BEST_ADDR. Since this symbol address is
270 necessarily lower or equal to PC, the symbol closer
271 to PC is the symbol which address is the highest.
272 This way we return the psymtab which contains such
273 best match symbol. This can help in cases where the
274 symbol information/debuginfo is not complete, like
275 for instance on IRIX6 with gcc, where no debug info
276 is emitted for statics. (See also the nodebug.exp
278 if (this_addr > best_addr)
280 best_addr = this_addr;
288 /* Find which partial symtab contains PC and SECTION. Return NULL if
289 none. We return the psymtab that contains a symbol whose address
290 exactly matches PC, or, if we cannot find an exact match, the
291 psymtab that contains a symbol whose address is closest to PC. */
293 static struct partial_symtab *
294 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
295 struct obj_section *section,
296 struct bound_minimal_symbol msymbol)
298 struct partial_symtab *pst;
299 CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets,
300 SECT_OFF_TEXT (objfile));
302 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
303 than the later used TEXTLOW/TEXTHIGH one. */
305 if (objfile->psymtabs_addrmap != NULL)
307 pst = ((struct partial_symtab *)
308 addrmap_find (objfile->psymtabs_addrmap, pc - baseaddr));
311 /* FIXME: addrmaps currently do not handle overlayed sections,
312 so fall back to the non-addrmap case if we're debugging
313 overlays and the addrmap returned the wrong section. */
314 if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
316 struct partial_symbol *p;
318 /* NOTE: This assumes that every psymbol has a
319 corresponding msymbol, which is not necessarily
320 true; the debug info might be much richer than the
321 object's symbol table. */
322 p = find_pc_sect_psymbol (objfile, pst, pc, section);
324 || (p->address (objfile)
325 != BMSYMBOL_VALUE_ADDRESS (msymbol)))
329 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
330 PSYMTABS_ADDRMAP we used has already the best 1-byte
331 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
332 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
341 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
342 which still have no corresponding full SYMTABs read. But it is not
343 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
346 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
347 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
348 debug info type in single OBJFILE. */
350 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
351 if (!pst->psymtabs_addrmap_supported
352 && pc >= pst->text_low (objfile) && pc < pst->text_high (objfile))
354 struct partial_symtab *best_pst;
356 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
358 if (best_pst != NULL)
365 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
366 the definition of quick_symbol_functions in symfile.h. */
368 static struct compunit_symtab *
369 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
370 struct bound_minimal_symbol msymbol,
372 struct obj_section *section,
375 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
379 if (warn_if_readin && ps->readin)
380 /* Might want to error() here (in case symtab is corrupt and
381 will cause a core dump), but maybe we can successfully
382 continue, so let's not. */
384 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
385 paddress (get_objfile_arch (objfile), pc));
386 psymtab_to_symtab (objfile, ps);
387 return ps->compunit_symtab;
392 /* Find which partial symbol within a psymtab matches PC and SECTION.
393 Return NULL if none. */
395 static struct partial_symbol *
396 find_pc_sect_psymbol (struct objfile *objfile,
397 struct partial_symtab *psymtab, CORE_ADDR pc,
398 struct obj_section *section)
400 struct partial_symbol *best = NULL;
402 const CORE_ADDR textlow = psymtab->text_low (objfile);
404 gdb_assert (psymtab != NULL);
406 /* Cope with programs that start at address 0. */
407 best_pc = (textlow != 0) ? textlow - 1 : 0;
409 /* Search the global symbols as well as the static symbols, so that
410 find_pc_partial_function doesn't use a minimal symbol and thus
411 cache a bad endaddr. */
412 for (int i = 0; i < psymtab->n_global_syms; i++)
414 partial_symbol *p = objfile->global_psymbols[psymtab->globals_offset + i];
416 if (p->domain == VAR_DOMAIN
417 && p->aclass == LOC_BLOCK
418 && pc >= p->address (objfile)
419 && (p->address (objfile) > best_pc
420 || (psymtab->text_low (objfile) == 0
421 && best_pc == 0 && p->address (objfile) == 0)))
423 if (section != NULL) /* Match on a specific section. */
425 if (!matching_obj_sections (p->obj_section (objfile),
429 best_pc = p->address (objfile);
434 for (int i = 0; i < psymtab->n_static_syms; i++)
436 partial_symbol *p = objfile->static_psymbols[psymtab->statics_offset + i];
438 if (p->domain == VAR_DOMAIN
439 && p->aclass == LOC_BLOCK
440 && pc >= p->address (objfile)
441 && (p->address (objfile) > best_pc
442 || (psymtab->text_low (objfile) == 0
443 && best_pc == 0 && p->address (objfile) == 0)))
445 if (section != NULL) /* Match on a specific section. */
447 if (!matching_obj_sections (p->obj_section (objfile),
451 best_pc = p->address (objfile);
459 /* Psymtab version of lookup_symbol. See its definition in
460 the definition of quick_symbol_functions in symfile.h. */
462 static struct compunit_symtab *
463 psym_lookup_symbol (struct objfile *objfile,
464 int block_index, const char *name,
465 const domain_enum domain)
467 struct partial_symtab *ps;
468 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
469 struct compunit_symtab *stab_best = NULL;
471 lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
473 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
475 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
476 psymtab_index, domain))
478 struct symbol *sym, *with_opaque = NULL;
479 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
480 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
481 is empty, we can assume it won't here because lookup_partial_symbol
483 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
484 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
486 sym = block_find_symbol (block, name, domain,
487 block_find_non_opaque_type_preferred,
490 /* Some caution must be observed with overloaded functions
491 and methods, since the index will not contain any overload
492 information (but NAME might contain it). */
495 && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name))
497 if (with_opaque != NULL
498 && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name))
501 /* Keep looking through other psymtabs. */
508 /* Returns true if PSYM matches LOOKUP_NAME. */
511 psymbol_name_matches (partial_symbol *psym,
512 const lookup_name_info &lookup_name)
514 const language_defn *lang = language_def (psym->language);
515 symbol_name_matcher_ftype *name_match
516 = get_symbol_name_matcher (lang, lookup_name);
517 return name_match (symbol_search_name (psym), lookup_name, NULL);
520 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
521 the global block of PST if GLOBAL, and otherwise the static block.
522 MATCH is the comparison operation that returns true iff MATCH (s,
523 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
524 non-null, the symbols in the block are assumed to be ordered
525 according to it (allowing binary search). It must be compatible
526 with MATCH. Returns the symbol, if found, and otherwise NULL. */
528 static struct partial_symbol *
529 match_partial_symbol (struct objfile *objfile,
530 struct partial_symtab *pst, int global,
531 const char *name, domain_enum domain,
532 symbol_name_match_type match_type,
533 symbol_compare_ftype *ordered_compare)
535 struct partial_symbol **start, **psym;
536 struct partial_symbol **top, **real_top, **bottom, **center;
537 int length = (global ? pst->n_global_syms : pst->n_static_syms);
538 int do_linear_search = 1;
543 lookup_name_info lookup_name (name, match_type);
546 &objfile->global_psymbols[pst->globals_offset] :
547 &objfile->static_psymbols[pst->statics_offset]);
549 if (global && ordered_compare) /* Can use a binary search. */
551 do_linear_search = 0;
553 /* Binary search. This search is guaranteed to end with center
554 pointing at the earliest partial symbol whose name might be
555 correct. At that point *all* partial symbols with an
556 appropriate name will be checked against the correct
560 top = start + length - 1;
564 center = bottom + (top - bottom) / 2;
565 gdb_assert (center < top);
567 enum language lang = (*center)->language;
569 = lookup_name.language_lookup_name (lang).c_str ();
571 if (ordered_compare (symbol_search_name (*center), lang_ln) >= 0)
576 gdb_assert (top == bottom);
578 while (top <= real_top
579 && psymbol_name_matches (*top, lookup_name))
581 if (symbol_matches_domain ((*top)->language,
582 (*top)->domain, domain))
588 /* Can't use a binary search or else we found during the binary search that
589 we should also do a linear search. */
591 if (do_linear_search)
593 for (psym = start; psym < start + length; psym++)
595 if (symbol_matches_domain ((*psym)->language,
596 (*psym)->domain, domain)
597 && psymbol_name_matches (*psym, lookup_name))
605 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
606 not contain any method/function instance information (since this would
607 force reading type information while reading psymtabs). Therefore,
608 if NAME contains overload information, it must be stripped before searching
611 static gdb::unique_xmalloc_ptr<char>
612 psymtab_search_name (const char *name)
614 switch (current_language->la_language)
618 if (strchr (name, '('))
620 gdb::unique_xmalloc_ptr<char> ret = cp_remove_params (name);
632 return gdb::unique_xmalloc_ptr<char> (xstrdup (name));
635 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
636 Check the global symbols if GLOBAL, the static symbols if not. */
638 static struct partial_symbol *
639 lookup_partial_symbol (struct objfile *objfile,
640 struct partial_symtab *pst, const char *name,
641 int global, domain_enum domain)
643 struct partial_symbol **start, **psym;
644 struct partial_symbol **top, **real_top, **bottom, **center;
645 int length = (global ? pst->n_global_syms : pst->n_static_syms);
646 int do_linear_search = 1;
651 gdb::unique_xmalloc_ptr<char> search_name = psymtab_search_name (name);
653 lookup_name_info lookup_name (search_name.get (), symbol_name_match_type::FULL);
656 &objfile->global_psymbols[pst->globals_offset] :
657 &objfile->static_psymbols[pst->statics_offset]);
659 if (global) /* This means we can use a binary search. */
661 do_linear_search = 0;
663 /* Binary search. This search is guaranteed to end with center
664 pointing at the earliest partial symbol whose name might be
665 correct. At that point *all* partial symbols with an
666 appropriate name will be checked against the correct
670 top = start + length - 1;
674 center = bottom + (top - bottom) / 2;
676 internal_error (__FILE__, __LINE__,
677 _("failed internal consistency check"));
678 if (strcmp_iw_ordered (symbol_search_name (*center),
679 search_name.get ()) >= 0)
688 if (!(top == bottom))
689 internal_error (__FILE__, __LINE__,
690 _("failed internal consistency check"));
692 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
693 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
694 while (top >= start && symbol_matches_search_name (*top, lookup_name))
697 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
700 while (top <= real_top && symbol_matches_search_name (*top, lookup_name))
702 if (symbol_matches_domain ((*top)->language,
703 (*top)->domain, domain))
709 /* Can't use a binary search or else we found during the binary search that
710 we should also do a linear search. */
712 if (do_linear_search)
714 for (psym = start; psym < start + length; psym++)
716 if (symbol_matches_domain ((*psym)->language,
717 (*psym)->domain, domain)
718 && symbol_matches_search_name (*psym, lookup_name))
726 /* Get the symbol table that corresponds to a partial_symtab.
727 This is fast after the first time you do it.
728 The result will be NULL if the primary symtab has no symbols,
729 which can happen. Otherwise the result is the primary symtab
730 that contains PST. */
732 static struct compunit_symtab *
733 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
735 /* If it is a shared psymtab, find an unshared psymtab that includes
736 it. Any such psymtab will do. */
737 while (pst->user != NULL)
740 /* If it's been looked up before, return it. */
741 if (pst->compunit_symtab)
742 return pst->compunit_symtab;
744 /* If it has not yet been read in, read it. */
747 scoped_restore decrementer = increment_reading_symtab ();
749 (*pst->read_symtab) (pst, objfile);
752 return pst->compunit_symtab;
755 /* Psymtab version of find_last_source_symtab. See its definition in
756 the definition of quick_symbol_functions in symfile.h. */
758 static struct symtab *
759 psym_find_last_source_symtab (struct objfile *ofp)
761 struct partial_symtab *ps;
762 struct partial_symtab *cs_pst = NULL;
764 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
766 const char *name = ps->filename;
767 int len = strlen (name);
769 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
770 || strcmp (name, "<<C++-namespaces>>") == 0)))
778 internal_error (__FILE__, __LINE__,
779 _("select_source_symtab: "
780 "readin pst found and no symtabs."));
784 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
788 return compunit_primary_filetab (cust);
794 /* Psymtab version of forget_cached_source_info. See its definition in
795 the definition of quick_symbol_functions in symfile.h. */
798 psym_forget_cached_source_info (struct objfile *objfile)
800 struct partial_symtab *pst;
802 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
804 if (pst->fullname != NULL)
806 xfree (pst->fullname);
807 pst->fullname = NULL;
813 print_partial_symbols (struct gdbarch *gdbarch, struct objfile *objfile,
814 struct partial_symbol **p, int count, const char *what,
815 struct ui_file *outfile)
817 fprintf_filtered (outfile, " %s partial symbols:\n", what);
821 fprintf_filtered (outfile, " `%s'", (*p)->name);
822 if (symbol_demangled_name (*p) != NULL)
824 fprintf_filtered (outfile, " `%s'", symbol_demangled_name (*p));
826 fputs_filtered (", ", outfile);
827 switch ((*p)->domain)
830 fputs_filtered ("undefined domain, ", outfile);
833 /* This is the usual thing -- don't print it. */
836 fputs_filtered ("struct domain, ", outfile);
839 fputs_filtered ("label domain, ", outfile);
842 fputs_filtered ("<invalid domain>, ", outfile);
845 switch ((*p)->aclass)
848 fputs_filtered ("undefined", outfile);
851 fputs_filtered ("constant int", outfile);
854 fputs_filtered ("static", outfile);
857 fputs_filtered ("register", outfile);
860 fputs_filtered ("pass by value", outfile);
863 fputs_filtered ("pass by reference", outfile);
865 case LOC_REGPARM_ADDR:
866 fputs_filtered ("register address parameter", outfile);
869 fputs_filtered ("stack parameter", outfile);
872 fputs_filtered ("type", outfile);
875 fputs_filtered ("label", outfile);
878 fputs_filtered ("function", outfile);
880 case LOC_CONST_BYTES:
881 fputs_filtered ("constant bytes", outfile);
884 fputs_filtered ("unresolved", outfile);
886 case LOC_OPTIMIZED_OUT:
887 fputs_filtered ("optimized out", outfile);
890 fputs_filtered ("computed at runtime", outfile);
893 fputs_filtered ("<invalid location>", outfile);
896 fputs_filtered (", ", outfile);
897 fputs_filtered (paddress (gdbarch, (*p)->unrelocated_address ()), outfile);
898 fprintf_filtered (outfile, "\n");
904 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
905 struct ui_file *outfile)
907 struct gdbarch *gdbarch = get_objfile_arch (objfile);
910 if (psymtab->anonymous)
912 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
917 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
920 fprintf_filtered (outfile, "(object ");
921 gdb_print_host_address (psymtab, outfile);
922 fprintf_filtered (outfile, ")\n\n");
923 fprintf_filtered (outfile, " Read from object file %s (",
924 objfile_name (objfile));
925 gdb_print_host_address (objfile, outfile);
926 fprintf_filtered (outfile, ")\n");
930 fprintf_filtered (outfile,
931 " Full symtab was read (at ");
932 gdb_print_host_address (psymtab->compunit_symtab, outfile);
933 fprintf_filtered (outfile, " by function at ");
934 gdb_print_host_address (psymtab->read_symtab, outfile);
935 fprintf_filtered (outfile, ")\n");
938 fprintf_filtered (outfile, " Symbols cover text addresses ");
939 fputs_filtered (paddress (gdbarch, psymtab->text_low (objfile)), outfile);
940 fprintf_filtered (outfile, "-");
941 fputs_filtered (paddress (gdbarch, psymtab->text_high (objfile)), outfile);
942 fprintf_filtered (outfile, "\n");
943 fprintf_filtered (outfile, " Address map supported - %s.\n",
944 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
945 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
946 psymtab->number_of_dependencies);
947 for (i = 0; i < psymtab->number_of_dependencies; i++)
949 fprintf_filtered (outfile, " %d ", i);
950 gdb_print_host_address (psymtab->dependencies[i], outfile);
951 fprintf_filtered (outfile, " %s\n",
952 psymtab->dependencies[i]->filename);
954 if (psymtab->user != NULL)
956 fprintf_filtered (outfile, " Shared partial symtab with user ");
957 gdb_print_host_address (psymtab->user, outfile);
958 fprintf_filtered (outfile, "\n");
960 if (psymtab->n_global_syms > 0)
962 print_partial_symbols (gdbarch, objfile,
963 &objfile->global_psymbols[psymtab->globals_offset],
964 psymtab->n_global_syms, "Global", outfile);
966 if (psymtab->n_static_syms > 0)
968 print_partial_symbols (gdbarch, objfile,
969 &objfile->static_psymbols[psymtab->statics_offset],
970 psymtab->n_static_syms, "Static", outfile);
972 fprintf_filtered (outfile, "\n");
975 /* Psymtab version of print_stats. See its definition in
976 the definition of quick_symbol_functions in symfile.h. */
979 psym_print_stats (struct objfile *objfile)
982 struct partial_symtab *ps;
985 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
990 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
993 /* Psymtab version of dump. See its definition in
994 the definition of quick_symbol_functions in symfile.h. */
997 psym_dump (struct objfile *objfile)
999 struct partial_symtab *psymtab;
1001 if (objfile->psymtabs)
1003 printf_filtered ("Psymtabs:\n");
1004 for (psymtab = objfile->psymtabs;
1006 psymtab = psymtab->next)
1008 printf_filtered ("%s at ",
1010 gdb_print_host_address (psymtab, gdb_stdout);
1011 printf_filtered (", ");
1014 printf_filtered ("\n\n");
1018 /* Psymtab version of expand_symtabs_for_function. See its definition in
1019 the definition of quick_symbol_functions in symfile.h. */
1022 psym_expand_symtabs_for_function (struct objfile *objfile,
1023 const char *func_name)
1025 struct partial_symtab *ps;
1027 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1032 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1034 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1036 psymtab_to_symtab (objfile, ps);
1040 /* Psymtab version of expand_all_symtabs. See its definition in
1041 the definition of quick_symbol_functions in symfile.h. */
1044 psym_expand_all_symtabs (struct objfile *objfile)
1046 struct partial_symtab *psymtab;
1048 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1050 psymtab_to_symtab (objfile, psymtab);
1054 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1055 the definition of quick_symbol_functions in symfile.h. */
1058 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1059 const char *fullname)
1061 struct partial_symtab *p;
1063 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1065 /* Anonymous psymtabs don't have a name of a source file. */
1069 /* psymtab_to_fullname tries to open the file which is slow.
1070 Don't call it if we know the basenames don't match. */
1071 if ((basenames_may_differ
1072 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1073 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1074 psymtab_to_symtab (objfile, p);
1078 /* Psymtab version of map_symbol_filenames. See its definition in
1079 the definition of quick_symbol_functions in symfile.h. */
1082 psym_map_symbol_filenames (struct objfile *objfile,
1083 symbol_filename_ftype *fun, void *data,
1086 struct partial_symtab *ps;
1088 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1090 const char *fullname;
1095 /* We can skip shared psymtabs here, because any file name will be
1096 attached to the unshared psymtab. */
1097 if (ps->user != NULL)
1100 /* Anonymous psymtabs don't have a file name. */
1106 fullname = psymtab_to_fullname (ps);
1109 (*fun) (ps->filename, fullname, data);
1113 /* Finds the fullname that a partial_symtab represents.
1115 If this functions finds the fullname, it will save it in ps->fullname
1116 and it will also return the value.
1118 If this function fails to find the file that this partial_symtab represents,
1119 NULL will be returned and ps->fullname will be set to NULL. */
1122 psymtab_to_fullname (struct partial_symtab *ps)
1124 gdb_assert (!ps->anonymous);
1126 /* Use cached copy if we have it.
1127 We rely on forget_cached_source_info being called appropriately
1128 to handle cases like the file being moved. */
1129 if (ps->fullname == NULL)
1131 gdb::unique_xmalloc_ptr<char> fullname;
1132 scoped_fd fd = find_and_open_source (ps->filename, ps->dirname,
1134 ps->fullname = fullname.release ();
1138 /* rewrite_source_path would be applied by find_and_open_source, we
1139 should report the pathname where GDB tried to find the file. */
1141 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1142 fullname.reset (xstrdup (ps->filename));
1144 fullname.reset (concat (ps->dirname, SLASH_STRING,
1145 ps->filename, (char *) NULL));
1147 ps->fullname = rewrite_source_path (fullname.get ()).release ();
1148 if (ps->fullname == NULL)
1149 ps->fullname = fullname.release ();
1153 return ps->fullname;
1156 /* For all symbols, s, in BLOCK that are in DOMAIN and match NAME
1157 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1158 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1159 ever returns non-zero, and otherwise returns 0. */
1162 map_block (const char *name, domain_enum domain, struct objfile *objfile,
1163 struct block *block,
1164 int (*callback) (struct block *, struct symbol *, void *),
1165 void *data, symbol_name_match_type match)
1167 struct block_iterator iter;
1170 lookup_name_info lookup_name (name, match);
1172 for (sym = block_iter_match_first (block, lookup_name, &iter);
1174 sym = block_iter_match_next (lookup_name, &iter))
1176 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1177 SYMBOL_DOMAIN (sym), domain))
1179 if (callback (block, sym, data))
1187 /* Psymtab version of map_matching_symbols. See its definition in
1188 the definition of quick_symbol_functions in symfile.h. */
1191 psym_map_matching_symbols (struct objfile *objfile,
1192 const char *name, domain_enum domain,
1194 int (*callback) (struct block *,
1195 struct symbol *, void *),
1197 symbol_name_match_type match,
1198 symbol_compare_ftype *ordered_compare)
1200 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1201 struct partial_symtab *ps;
1203 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1207 || match_partial_symbol (objfile, ps, global, name, domain, match,
1210 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1211 struct block *block;
1215 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1216 if (map_block (name, domain, objfile, block,
1217 callback, data, match))
1219 if (callback (block, NULL, data))
1225 /* A helper for psym_expand_symtabs_matching that handles searching
1226 included psymtabs. This returns true if a symbol is found, and
1227 false otherwise. It also updates the 'searched_flag' on the
1228 various psymtabs that it searches. */
1231 recursively_search_psymtabs
1232 (struct partial_symtab *ps,
1233 struct objfile *objfile,
1234 enum search_domain domain,
1235 const lookup_name_info &lookup_name,
1236 gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
1239 enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
1242 if (ps->searched_flag != PST_NOT_SEARCHED)
1243 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1245 /* Recurse into shared psymtabs first, because they may have already
1246 been searched, and this could save some time. */
1247 for (i = 0; i < ps->number_of_dependencies; ++i)
1251 /* Skip non-shared dependencies, these are handled elsewhere. */
1252 if (ps->dependencies[i]->user == NULL)
1255 r = recursively_search_psymtabs (ps->dependencies[i],
1256 objfile, domain, lookup_name,
1260 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1265 partial_symbol **gbound
1266 = objfile->global_psymbols.data () + ps->globals_offset + ps->n_global_syms;
1267 partial_symbol **sbound
1268 = objfile->static_psymbols.data () + ps->statics_offset + ps->n_static_syms;
1269 partial_symbol **bound = gbound;
1271 /* Go through all of the symbols stored in a partial
1272 symtab in one loop. */
1273 partial_symbol **psym = objfile->global_psymbols.data () + ps->globals_offset;
1278 if (bound == gbound && ps->n_static_syms != 0)
1280 psym = objfile->static_psymbols.data () + ps->statics_offset;
1291 if ((domain == ALL_DOMAIN
1292 || (domain == VARIABLES_DOMAIN
1293 && (*psym)->aclass != LOC_TYPEDEF
1294 && (*psym)->aclass != LOC_BLOCK)
1295 || (domain == FUNCTIONS_DOMAIN
1296 && (*psym)->aclass == LOC_BLOCK)
1297 || (domain == TYPES_DOMAIN
1298 && (*psym)->aclass == LOC_TYPEDEF))
1299 && psymbol_name_matches (*psym, lookup_name)
1300 && (sym_matcher == NULL || sym_matcher (symbol_search_name (*psym))))
1302 /* Found a match, so notify our caller. */
1303 result = PST_SEARCHED_AND_FOUND;
1310 ps->searched_flag = result;
1311 return result == PST_SEARCHED_AND_FOUND;
1314 /* Psymtab version of expand_symtabs_matching. See its definition in
1315 the definition of quick_symbol_functions in symfile.h. */
1318 psym_expand_symtabs_matching
1319 (struct objfile *objfile,
1320 gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
1321 const lookup_name_info &lookup_name_in,
1322 gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
1323 gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
1324 enum search_domain domain)
1326 struct partial_symtab *ps;
1328 lookup_name_info lookup_name = lookup_name_in.make_ignore_params ();
1330 /* Clear the search flags. */
1331 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1333 ps->searched_flag = PST_NOT_SEARCHED;
1336 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1343 /* We skip shared psymtabs because file-matching doesn't apply
1344 to them; but we search them later in the loop. */
1345 if (ps->user != NULL)
1355 match = file_matcher (ps->filename, false);
1358 /* Before we invoke realpath, which can get expensive when many
1359 files are involved, do a quick comparison of the basenames. */
1360 if (basenames_may_differ
1361 || file_matcher (lbasename (ps->filename), true))
1362 match = file_matcher (psymtab_to_fullname (ps), false);
1368 if (recursively_search_psymtabs (ps, objfile, domain,
1369 lookup_name, symbol_matcher))
1371 struct compunit_symtab *symtab =
1372 psymtab_to_symtab (objfile, ps);
1374 if (expansion_notify != NULL)
1375 expansion_notify (symtab);
1380 /* Psymtab version of has_symbols. See its definition in
1381 the definition of quick_symbol_functions in symfile.h. */
1384 psym_has_symbols (struct objfile *objfile)
1386 return objfile->psymtabs != NULL;
1389 /* Helper function for psym_find_compunit_symtab_by_address that fills
1390 in psymbol_map for a given range of psymbols. */
1393 psym_fill_psymbol_map (struct objfile *objfile,
1394 struct partial_symtab *psymtab,
1395 std::set<CORE_ADDR> *seen_addrs,
1396 const std::vector<partial_symbol *> &symbols,
1400 for (int i = 0; i < length; ++i)
1402 struct partial_symbol *psym = symbols[start + i];
1404 if (psym->aclass == LOC_STATIC)
1406 CORE_ADDR addr = psym->address (objfile);
1407 if (seen_addrs->find (addr) == seen_addrs->end ())
1409 seen_addrs->insert (addr);
1410 objfile->psymbol_map.emplace_back (addr, psymtab);
1416 /* See find_compunit_symtab_by_address in quick_symbol_functions, in
1419 static compunit_symtab *
1420 psym_find_compunit_symtab_by_address (struct objfile *objfile,
1423 if (objfile->psymbol_map.empty ())
1425 struct partial_symtab *pst;
1427 std::set<CORE_ADDR> seen_addrs;
1429 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
1431 psym_fill_psymbol_map (objfile, pst,
1433 objfile->global_psymbols,
1434 pst->globals_offset,
1435 pst->n_global_syms);
1436 psym_fill_psymbol_map (objfile, pst,
1438 objfile->static_psymbols,
1439 pst->statics_offset,
1440 pst->n_static_syms);
1443 objfile->psymbol_map.shrink_to_fit ();
1445 std::sort (objfile->psymbol_map.begin (), objfile->psymbol_map.end (),
1446 [] (const std::pair<CORE_ADDR, partial_symtab *> &a,
1447 const std::pair<CORE_ADDR, partial_symtab *> &b)
1449 return a.first < b.first;
1453 auto iter = std::lower_bound
1454 (objfile->psymbol_map.begin (), objfile->psymbol_map.end (), address,
1455 [] (const std::pair<CORE_ADDR, partial_symtab *> &a,
1461 if (iter == objfile->psymbol_map.end () || iter->first != address)
1464 return psymtab_to_symtab (objfile, iter->second);
1467 const struct quick_symbol_functions psym_functions =
1470 psym_find_last_source_symtab,
1471 psym_forget_cached_source_info,
1472 psym_map_symtabs_matching_filename,
1476 psym_expand_symtabs_for_function,
1477 psym_expand_all_symtabs,
1478 psym_expand_symtabs_with_fullname,
1479 psym_map_matching_symbols,
1480 psym_expand_symtabs_matching,
1481 psym_find_pc_sect_compunit_symtab,
1482 psym_find_compunit_symtab_by_address,
1483 psym_map_symbol_filenames
1489 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1491 /* Sort the global list; don't sort the static list. */
1492 auto begin = objfile->global_psymbols.begin ();
1493 std::advance (begin, pst->globals_offset);
1495 /* The psymbols for this partial_symtab are currently at the end of the
1497 auto end = objfile->global_psymbols.end ();
1499 std::sort (begin, end, [] (partial_symbol *s1, partial_symbol *s2)
1501 return strcmp_iw_ordered (symbol_search_name (s1),
1502 symbol_search_name (s2)) < 0;
1506 /* Allocate and partially fill a partial symtab. It will be
1507 completely filled at the end of the symbol list.
1509 FILENAME is the name of the symbol-file we are reading from. */
1511 struct partial_symtab *
1512 start_psymtab_common (struct objfile *objfile,
1513 const char *filename,
1515 std::vector<partial_symbol *> &global_psymbols,
1516 std::vector<partial_symbol *> &static_psymbols)
1518 struct partial_symtab *psymtab;
1520 psymtab = allocate_psymtab (filename, objfile);
1521 psymtab->set_text_low (textlow);
1522 psymtab->set_text_high (psymtab->raw_text_low ()); /* default */
1523 psymtab->globals_offset = global_psymbols.size ();
1524 psymtab->statics_offset = static_psymbols.size ();
1528 /* Perform "finishing up" operations of a partial symtab. */
1531 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
1533 pst->n_global_syms = objfile->global_psymbols.size () - pst->globals_offset;
1534 pst->n_static_syms = objfile->static_psymbols.size () - pst->statics_offset;
1536 sort_pst_symbols (objfile, pst);
1539 /* Calculate a hash code for the given partial symbol. The hash is
1540 calculated using the symbol's value, language, domain, class
1541 and name. These are the values which are set by
1542 add_psymbol_to_bcache. */
1544 static unsigned long
1545 psymbol_hash (const void *addr, int length)
1547 unsigned long h = 0;
1548 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1549 unsigned int lang = psymbol->language;
1550 unsigned int domain = psymbol->domain;
1551 unsigned int theclass = psymbol->aclass;
1553 h = hash_continue (&psymbol->value, sizeof (psymbol->value), h);
1554 h = hash_continue (&lang, sizeof (unsigned int), h);
1555 h = hash_continue (&domain, sizeof (unsigned int), h);
1556 h = hash_continue (&theclass, sizeof (unsigned int), h);
1557 /* Note that psymbol names are interned via symbol_set_names, so
1558 there's no need to hash the contents of the name here. */
1559 h = hash_continue (&psymbol->name,
1560 sizeof (psymbol->name), h);
1565 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1566 For the comparison this function uses a symbols value,
1567 language, domain, class and name. */
1570 psymbol_compare (const void *addr1, const void *addr2, int length)
1572 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1573 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1575 return (memcmp (&sym1->value, &sym2->value,
1576 sizeof (sym1->value)) == 0
1577 && sym1->language == sym2->language
1578 && sym1->domain == sym2->domain
1579 && sym1->aclass == sym2->aclass
1580 /* Note that psymbol names are interned via
1581 symbol_set_names, so there's no need to compare the
1582 contents of the name here. */
1583 && sym1->name == sym2->name);
1586 /* Initialize a partial symbol bcache. */
1588 struct psymbol_bcache *
1589 psymbol_bcache_init (void)
1591 struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
1593 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1597 /* Free a partial symbol bcache. */
1600 psymbol_bcache_free (struct psymbol_bcache *bcache)
1605 bcache_xfree (bcache->bcache);
1609 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1612 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1614 return bcache->bcache;
1617 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1618 symbol before, add a copy to BCACHE. In either case, return a pointer
1619 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1620 1 in case of new entry or 0 if returning an old entry. */
1622 static struct partial_symbol *
1623 psymbol_bcache_full (struct partial_symbol *sym,
1624 struct psymbol_bcache *bcache,
1627 return ((struct partial_symbol *)
1628 bcache_full (sym, sizeof (struct partial_symbol), bcache->bcache,
1632 /* Helper function, initialises partial symbol structure and stashes
1633 it into objfile's bcache. Note that our caching mechanism will
1634 use all fields of struct partial_symbol to determine hash value of the
1635 structure. In other words, having two symbols with the same name but
1636 different domain (or address) is possible and correct. */
1638 static struct partial_symbol *
1639 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1641 enum address_class theclass,
1644 enum language language, struct objfile *objfile,
1647 struct partial_symbol psymbol;
1649 psymbol.set_unrelocated_address (coreaddr);
1650 psymbol.section = section;
1651 psymbol.domain = domain;
1652 psymbol.aclass = theclass;
1654 memset (&psymbol.language_specific, 0, sizeof (psymbol.language_specific));
1655 psymbol.ada_mangled = 0;
1656 symbol_set_language (&psymbol, language, &objfile->objfile_obstack);
1657 symbol_set_names (&psymbol, name, namelength, copy_name, objfile);
1659 /* Stash the partial symbol away in the cache. */
1660 return psymbol_bcache_full (&psymbol, objfile->psymbol_cache, added);
1663 /* Helper function, adds partial symbol to the given partial symbol list. */
1666 append_psymbol_to_list (std::vector<partial_symbol *> *list,
1667 struct partial_symbol *psym,
1668 struct objfile *objfile)
1670 list->push_back (psym);
1671 OBJSTAT (objfile, n_psyms++);
1674 /* Add a symbol with a long value to a psymtab.
1675 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1676 The only value we need to store for psyms is an address.
1677 For all other psyms pass zero for COREADDR.
1678 Return the partial symbol that has been added. */
1681 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1683 enum address_class theclass,
1685 std::vector<partial_symbol *> *list,
1687 enum language language, struct objfile *objfile)
1689 struct partial_symbol *psym;
1693 /* Stash the partial symbol away in the cache. */
1694 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, theclass,
1695 section, coreaddr, language, objfile, &added);
1697 /* Do not duplicate global partial symbols. */
1698 if (list == &objfile->global_psymbols
1702 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1703 append_psymbol_to_list (list, psym, objfile);
1706 /* Initialize storage for partial symbols. */
1709 init_psymbol_list (struct objfile *objfile, int total_symbols)
1711 /* Free any previously allocated psymbol lists. */
1712 objfile->global_psymbols.clear ();
1713 objfile->static_psymbols.clear ();
1715 /* Current best guess is that approximately a twentieth
1716 of the total symbols (in a debugging file) are global or static
1717 oriented symbols, then multiply that by slop factor of two. */
1718 objfile->global_psymbols.reserve (total_symbols / 10);
1719 objfile->static_psymbols.reserve (total_symbols / 10);
1722 struct partial_symtab *
1723 allocate_psymtab (const char *filename, struct objfile *objfile)
1725 struct partial_symtab *psymtab;
1727 if (objfile->free_psymtabs)
1729 psymtab = objfile->free_psymtabs;
1730 objfile->free_psymtabs = psymtab->next;
1733 psymtab = XOBNEW (&objfile->objfile_obstack, partial_symtab);
1735 memset (psymtab, 0, sizeof (struct partial_symtab));
1737 = (const char *) bcache (filename, strlen (filename) + 1,
1738 objfile->per_bfd->filename_cache);
1739 psymtab->compunit_symtab = NULL;
1741 /* Prepend it to the psymtab list for the objfile it belongs to.
1742 Psymtabs are searched in most recent inserted -> least recent
1745 psymtab->next = objfile->psymtabs;
1746 objfile->psymtabs = psymtab;
1748 if (symtab_create_debug)
1750 /* Be a bit clever with debugging messages, and don't print objfile
1751 every time, only when it changes. */
1752 static char *last_objfile_name = NULL;
1754 if (last_objfile_name == NULL
1755 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1757 xfree (last_objfile_name);
1758 last_objfile_name = xstrdup (objfile_name (objfile));
1759 fprintf_filtered (gdb_stdlog,
1760 "Creating one or more psymtabs for objfile %s ...\n",
1763 fprintf_filtered (gdb_stdlog,
1764 "Created psymtab %s for module %s.\n",
1765 host_address_to_string (psymtab), filename);
1772 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1774 struct partial_symtab **prev_pst;
1777 Empty psymtabs happen as a result of header files which don't
1778 have any symbols in them. There can be a lot of them. But this
1779 check is wrong, in that a psymtab with N_SLINE entries but
1780 nothing else is not empty, but we don't realize that. Fixing
1781 that without slowing things down might be tricky. */
1783 /* First, snip it out of the psymtab chain. */
1785 prev_pst = &(objfile->psymtabs);
1786 while ((*prev_pst) != pst)
1787 prev_pst = &((*prev_pst)->next);
1788 (*prev_pst) = pst->next;
1790 /* Next, put it on a free list for recycling. */
1792 pst->next = objfile->free_psymtabs;
1793 objfile->free_psymtabs = pst;
1798 /* We need to pass a couple of items to the addrmap_foreach function,
1801 struct dump_psymtab_addrmap_data
1803 struct objfile *objfile;
1804 struct partial_symtab *psymtab;
1805 struct ui_file *outfile;
1807 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1808 If so, we want to print the next one as well (since the next addrmap
1809 entry defines the end of the range). */
1810 int previous_matched;
1813 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1816 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
1818 struct dump_psymtab_addrmap_data *data
1819 = (struct dump_psymtab_addrmap_data *) datap;
1820 struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
1821 struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
1822 const char *psymtab_address_or_end = NULL;
1826 if (data->psymtab == NULL
1827 || data->psymtab == addrmap_psymtab)
1828 psymtab_address_or_end = host_address_to_string (addrmap_psymtab);
1829 else if (data->previous_matched)
1830 psymtab_address_or_end = "<ends here>";
1832 if (data->psymtab == NULL
1833 || data->psymtab == addrmap_psymtab
1834 || data->previous_matched)
1836 fprintf_filtered (data->outfile, " %s%s %s\n",
1837 data->psymtab != NULL ? " " : "",
1838 paddress (gdbarch, start_addr),
1839 psymtab_address_or_end);
1842 data->previous_matched = (data->psymtab == NULL
1843 || data->psymtab == addrmap_psymtab);
1848 /* Helper function for maintenance_print_psymbols to print the addrmap
1849 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1852 dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
1853 struct ui_file *outfile)
1855 struct dump_psymtab_addrmap_data addrmap_dump_data;
1857 if ((psymtab == NULL
1858 || psymtab->psymtabs_addrmap_supported)
1859 && objfile->psymtabs_addrmap != NULL)
1861 addrmap_dump_data.objfile = objfile;
1862 addrmap_dump_data.psymtab = psymtab;
1863 addrmap_dump_data.outfile = outfile;
1864 addrmap_dump_data.previous_matched = 0;
1865 fprintf_filtered (outfile, "%sddress map:\n",
1866 psymtab == NULL ? "Entire a" : " A");
1867 addrmap_foreach (objfile->psymtabs_addrmap, dump_psymtab_addrmap_1,
1868 &addrmap_dump_data);
1873 maintenance_print_psymbols (const char *args, int from_tty)
1875 struct ui_file *outfile = gdb_stdout;
1876 char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
1877 struct objfile *objfile;
1878 struct partial_symtab *ps;
1879 int i, outfile_idx, found;
1881 struct obj_section *section = NULL;
1885 gdb_argv argv (args);
1887 for (i = 0; argv != NULL && argv[i] != NULL; ++i)
1889 if (strcmp (argv[i], "-pc") == 0)
1891 if (argv[i + 1] == NULL)
1892 error (_("Missing pc value"));
1893 address_arg = argv[++i];
1895 else if (strcmp (argv[i], "-source") == 0)
1897 if (argv[i + 1] == NULL)
1898 error (_("Missing source file"));
1899 source_arg = argv[++i];
1901 else if (strcmp (argv[i], "-objfile") == 0)
1903 if (argv[i + 1] == NULL)
1904 error (_("Missing objfile name"));
1905 objfile_arg = argv[++i];
1907 else if (strcmp (argv[i], "--") == 0)
1909 /* End of options. */
1913 else if (argv[i][0] == '-')
1915 /* Future proofing: Don't allow OUTFILE to begin with "-". */
1916 error (_("Unknown option: %s"), argv[i]);
1923 if (address_arg != NULL && source_arg != NULL)
1924 error (_("Must specify at most one of -pc and -source"));
1926 stdio_file arg_outfile;
1928 if (argv != NULL && argv[outfile_idx] != NULL)
1930 if (argv[outfile_idx + 1] != NULL)
1931 error (_("Junk at end of command"));
1932 gdb::unique_xmalloc_ptr<char> outfile_name
1933 (tilde_expand (argv[outfile_idx]));
1934 if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
1935 perror_with_name (outfile_name.get ());
1936 outfile = &arg_outfile;
1939 if (address_arg != NULL)
1941 pc = parse_and_eval_address (address_arg);
1942 /* If we fail to find a section, that's ok, try the lookup anyway. */
1943 section = find_pc_section (pc);
1947 ALL_OBJFILES (objfile)
1949 int printed_objfile_header = 0;
1950 int print_for_objfile = 1;
1953 if (objfile_arg != NULL)
1955 = compare_filenames_for_search (objfile_name (objfile),
1957 if (!print_for_objfile)
1960 if (address_arg != NULL)
1962 struct bound_minimal_symbol msymbol = { NULL, NULL };
1964 /* We don't assume each pc has a unique objfile (this is for
1966 ps = find_pc_sect_psymtab (objfile, pc, section, msymbol);
1969 if (!printed_objfile_header)
1971 outfile->printf ("\nPartial symtabs for objfile %s\n",
1972 objfile_name (objfile));
1973 printed_objfile_header = 1;
1975 dump_psymtab (objfile, ps, outfile);
1976 dump_psymtab_addrmap (objfile, ps, outfile);
1982 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1984 int print_for_source = 0;
1987 if (source_arg != NULL)
1990 = compare_filenames_for_search (ps->filename, source_arg);
1993 if (source_arg == NULL
1994 || print_for_source)
1996 if (!printed_objfile_header)
1998 outfile->printf ("\nPartial symtabs for objfile %s\n",
1999 objfile_name (objfile));
2000 printed_objfile_header = 1;
2002 dump_psymtab (objfile, ps, outfile);
2003 dump_psymtab_addrmap (objfile, ps, outfile);
2008 /* If we're printing all the objfile's symbols dump the full addrmap. */
2010 if (address_arg == NULL
2011 && source_arg == NULL
2012 && objfile->psymtabs_addrmap != NULL)
2014 outfile->puts ("\n");
2015 dump_psymtab_addrmap (objfile, NULL, outfile);
2021 if (address_arg != NULL)
2022 error (_("No partial symtab for address: %s"), address_arg);
2023 if (source_arg != NULL)
2024 error (_("No partial symtab for source file: %s"), source_arg);
2028 /* List all the partial symbol tables whose names match REGEXP (optional). */
2031 maintenance_info_psymtabs (const char *regexp, int from_tty)
2033 struct program_space *pspace;
2034 struct objfile *objfile;
2039 ALL_PSPACES (pspace)
2040 ALL_PSPACE_OBJFILES (pspace, objfile)
2042 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2043 struct partial_symtab *psymtab;
2045 /* We don't want to print anything for this objfile until we
2046 actually find a symtab whose name matches. */
2047 int printed_objfile_start = 0;
2049 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
2054 || re_exec (psymtab->filename))
2056 if (! printed_objfile_start)
2058 printf_filtered ("{ objfile %s ", objfile_name (objfile));
2060 printf_filtered ("((struct objfile *) %s)\n",
2061 host_address_to_string (objfile));
2062 printed_objfile_start = 1;
2065 printf_filtered (" { psymtab %s ", psymtab->filename);
2067 printf_filtered ("((struct partial_symtab *) %s)\n",
2068 host_address_to_string (psymtab));
2070 printf_filtered (" readin %s\n",
2071 psymtab->readin ? "yes" : "no");
2072 printf_filtered (" fullname %s\n",
2074 ? psymtab->fullname : "(null)");
2075 printf_filtered (" text addresses ");
2076 fputs_filtered (paddress (gdbarch, psymtab->text_low (objfile)),
2078 printf_filtered (" -- ");
2079 fputs_filtered (paddress (gdbarch, psymtab->text_high (objfile)),
2081 printf_filtered ("\n");
2082 printf_filtered (" psymtabs_addrmap_supported %s\n",
2083 (psymtab->psymtabs_addrmap_supported
2085 printf_filtered (" globals ");
2086 if (psymtab->n_global_syms)
2088 auto p = &objfile->global_psymbols[psymtab->globals_offset];
2090 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2091 host_address_to_string (p),
2092 psymtab->n_global_syms);
2095 printf_filtered ("(none)\n");
2096 printf_filtered (" statics ");
2097 if (psymtab->n_static_syms)
2099 auto p = &objfile->static_psymbols[psymtab->statics_offset];
2101 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2102 host_address_to_string (p),
2103 psymtab->n_static_syms);
2106 printf_filtered ("(none)\n");
2107 printf_filtered (" dependencies ");
2108 if (psymtab->number_of_dependencies)
2112 printf_filtered ("{\n");
2113 for (i = 0; i < psymtab->number_of_dependencies; i++)
2115 struct partial_symtab *dep = psymtab->dependencies[i];
2117 /* Note the string concatenation there --- no comma. */
2118 printf_filtered (" psymtab %s "
2119 "((struct partial_symtab *) %s)\n",
2121 host_address_to_string (dep));
2123 printf_filtered (" }\n");
2126 printf_filtered ("(none)\n");
2127 printf_filtered (" }\n");
2131 if (printed_objfile_start)
2132 printf_filtered ("}\n");
2136 /* Check consistency of currently expanded psymtabs vs symtabs. */
2139 maintenance_check_psymtabs (const char *ignore, int from_tty)
2142 struct compunit_symtab *cust = NULL;
2143 struct partial_symtab *ps;
2144 const struct blockvector *bv;
2145 struct objfile *objfile;
2149 ALL_PSYMTABS (objfile, ps)
2151 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2153 /* We don't call psymtab_to_symtab here because that may cause symtab
2154 expansion. When debugging a problem it helps if checkers leave
2155 things unchanged. */
2156 cust = ps->compunit_symtab;
2158 /* First do some checks that don't require the associated symtab. */
2159 if (ps->text_high (objfile) < ps->text_low (objfile))
2161 printf_filtered ("Psymtab ");
2162 puts_filtered (ps->filename);
2163 printf_filtered (" covers bad range ");
2164 fputs_filtered (paddress (gdbarch, ps->text_low (objfile)),
2166 printf_filtered (" - ");
2167 fputs_filtered (paddress (gdbarch, ps->text_high (objfile)),
2169 printf_filtered ("\n");
2173 /* Now do checks requiring the associated symtab. */
2176 bv = COMPUNIT_BLOCKVECTOR (cust);
2177 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2178 partial_symbol **psym = &objfile->static_psymbols[ps->statics_offset];
2179 length = ps->n_static_syms;
2182 sym = block_lookup_symbol (b, symbol_search_name (*psym),
2183 symbol_name_match_type::SEARCH_NAME,
2187 printf_filtered ("Static symbol `");
2188 puts_filtered ((*psym)->name);
2189 printf_filtered ("' only found in ");
2190 puts_filtered (ps->filename);
2191 printf_filtered (" psymtab\n");
2195 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2196 psym = &objfile->global_psymbols[ps->globals_offset];
2197 length = ps->n_global_syms;
2200 sym = block_lookup_symbol (b, symbol_search_name (*psym),
2201 symbol_name_match_type::SEARCH_NAME,
2205 printf_filtered ("Global symbol `");
2206 puts_filtered ((*psym)->name);
2207 printf_filtered ("' only found in ");
2208 puts_filtered (ps->filename);
2209 printf_filtered (" psymtab\n");
2213 if (ps->raw_text_high () != 0
2214 && (ps->text_low (objfile) < BLOCK_START (b)
2215 || ps->text_high (objfile) > BLOCK_END (b)))
2217 printf_filtered ("Psymtab ");
2218 puts_filtered (ps->filename);
2219 printf_filtered (" covers ");
2220 fputs_filtered (paddress (gdbarch, ps->text_low (objfile)),
2222 printf_filtered (" - ");
2223 fputs_filtered (paddress (gdbarch, ps->text_high (objfile)),
2225 printf_filtered (" but symtab covers only ");
2226 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2227 printf_filtered (" - ");
2228 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2229 printf_filtered ("\n");
2235 _initialize_psymtab (void)
2237 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2238 Print dump of current partial symbol definitions.\n\
2239 Usage: mt print psymbols [-objfile objfile] [-pc address] [--] [outfile]\n\
2240 mt print psymbols [-objfile objfile] [-source source] [--] [outfile]\n\
2241 Entries in the partial symbol table are dumped to file OUTFILE,\n\
2242 or the terminal if OUTFILE is unspecified.\n\
2243 If ADDRESS is provided, dump only the file for that address.\n\
2244 If SOURCE is provided, dump only that file's symbols.\n\
2245 If OBJFILE is provided, dump only that file's minimal symbols."),
2246 &maintenanceprintlist);
2248 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2249 List the partial symbol tables for all object files.\n\
2250 This does not include information about individual partial symbols,\n\
2251 just the symbol table structures themselves."),
2252 &maintenanceinfolist);
2254 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2256 Check consistency of currently expanded psymtabs versus symtabs."),