1 /* Partial symbol tables.
3 Copyright (C) 2009-2020 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"
31 #include "readline/tilde.h"
32 #include "gdb_regex.h"
33 #include "dictionary.h"
35 #include "cp-support.h"
40 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
41 struct partial_symtab *,
45 static const char *psymtab_to_fullname (struct partial_symtab *ps);
47 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
48 struct partial_symtab *,
50 struct obj_section *);
52 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
53 struct partial_symtab *pst);
57 static unsigned long psymbol_hash (const void *addr, int length);
58 static int psymbol_compare (const void *addr1, const void *addr2, int length);
60 psymtab_storage::psymtab_storage ()
61 : psymbol_cache (psymbol_hash, psymbol_compare)
65 psymtab_storage::~psymtab_storage ()
67 partial_symtab *iter = psymtabs;
68 while (iter != nullptr)
70 partial_symtab *next = iter->next;
79 psymtab_storage::install_psymtab (partial_symtab *pst)
89 psymtab_storage::partial_symtab_range
90 require_partial_symbols (struct objfile *objfile, bool verbose)
92 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
94 objfile->flags |= OBJF_PSYMTABS_READ;
96 if (objfile->sf->sym_read_psymbols)
99 printf_filtered (_("Reading symbols from %s...\n"),
100 objfile_name (objfile));
101 (*objfile->sf->sym_read_psymbols) (objfile);
103 /* Partial symbols list are not expected to changed after this
105 objfile->partial_symtabs->global_psymbols.shrink_to_fit ();
106 objfile->partial_symtabs->static_psymbols.shrink_to_fit ();
108 if (verbose && !objfile_has_symbols (objfile))
109 printf_filtered (_("(No debugging symbols found in %s)\n"),
110 objfile_name (objfile));
114 return objfile->psymtabs ();
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. */
134 if (pst->readin_p ())
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 const char *name_basename = lbasename (name);
157 for (partial_symtab *pst : require_partial_symbols (objfile, true))
159 /* We can skip shared psymtabs here, because any file name will be
160 attached to the unshared psymtab. */
161 if (pst->user != NULL)
164 /* Anonymous psymtabs don't have a file name. */
168 if (compare_filenames_for_search (pst->filename, name))
170 if (partial_map_expand_apply (objfile, name, real_path,
176 /* Before we invoke realpath, which can get expensive when many
177 files are involved, do a quick comparison of the basenames. */
178 if (! basenames_may_differ
179 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
182 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
184 if (partial_map_expand_apply (objfile, name, real_path,
190 /* If the user gave us an absolute path, try to find the file in
191 this symtab and use its absolute path. */
192 if (real_path != NULL)
194 gdb_assert (IS_ABSOLUTE_PATH (real_path));
195 gdb_assert (IS_ABSOLUTE_PATH (name));
196 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
198 if (partial_map_expand_apply (objfile, name, real_path,
209 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
210 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
212 static struct partial_symtab *
213 find_pc_sect_psymtab_closer (struct objfile *objfile,
214 CORE_ADDR pc, struct obj_section *section,
215 struct partial_symtab *pst,
216 struct bound_minimal_symbol msymbol)
218 struct partial_symtab *tpst;
219 struct partial_symtab *best_pst = pst;
220 CORE_ADDR best_addr = pst->text_low (objfile);
222 gdb_assert (!pst->psymtabs_addrmap_supported);
224 /* An objfile that has its functions reordered might have
225 many partial symbol tables containing the PC, but
226 we want the partial symbol table that contains the
227 function containing the PC. */
228 if (!(objfile->flags & OBJF_REORDERED)
229 && section == NULL) /* Can't validate section this way. */
232 if (msymbol.minsym == NULL)
235 /* The code range of partial symtabs sometimes overlap, so, in
236 the loop below, we need to check all partial symtabs and
237 find the one that fits better for the given PC address. We
238 select the partial symtab that contains a symbol whose
239 address is closest to the PC address. By closest we mean
240 that find_pc_sect_symbol returns the symbol with address
241 that is closest and still less than the given PC. */
242 for (tpst = pst; tpst != NULL; tpst = tpst->next)
244 if (pc >= tpst->text_low (objfile) && pc < tpst->text_high (objfile))
246 struct partial_symbol *p;
249 /* NOTE: This assumes that every psymbol has a
250 corresponding msymbol, which is not necessarily
251 true; the debug info might be much richer than the
252 object's symbol table. */
253 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
255 && (p->address (objfile) == BMSYMBOL_VALUE_ADDRESS (msymbol)))
258 /* Also accept the textlow value of a psymtab as a
259 "symbol", to provide some support for partial
260 symbol tables with line information but no debug
261 symbols (e.g. those produced by an assembler). */
263 this_addr = p->address (objfile);
265 this_addr = tpst->text_low (objfile);
267 /* Check whether it is closer than our current
268 BEST_ADDR. Since this symbol address is
269 necessarily lower or equal to PC, the symbol closer
270 to PC is the symbol which address is the highest.
271 This way we return the psymtab which contains such
272 best match symbol. This can help in cases where the
273 symbol information/debuginfo is not complete, like
274 for instance on IRIX6 with gcc, where no debug info
275 is emitted for statics. (See also the nodebug.exp
277 if (this_addr > best_addr)
279 best_addr = this_addr;
287 /* Find which partial symtab contains PC and SECTION. Return NULL if
288 none. We return the psymtab that contains a symbol whose address
289 exactly matches PC, or, if we cannot find an exact match, the
290 psymtab that contains a symbol whose address is closest to PC. */
292 static struct partial_symtab *
293 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
294 struct obj_section *section,
295 struct bound_minimal_symbol msymbol)
297 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better
298 granularity than the later used TEXTLOW/TEXTHIGH one. However, we need
299 to take care as the PSYMTABS_ADDRMAP can hold things other than partial
300 symtabs in some cases.
302 This function should only be called for objfiles that are using partial
303 symtabs, not for objfiles that are using indexes (.gdb_index or
304 .debug_names), however 'maintenance print psymbols' calls this function
305 directly for all objfiles. If we assume that PSYMTABS_ADDRMAP contains
306 partial symtabs then we will end up returning a pointer to an object
307 that is not a partial_symtab, which doesn't end well. */
309 if (objfile->partial_symtabs->psymtabs != NULL
310 && objfile->partial_symtabs->psymtabs_addrmap != NULL)
312 CORE_ADDR baseaddr = objfile->text_section_offset ();
314 struct partial_symtab *pst
315 = ((struct partial_symtab *)
316 addrmap_find (objfile->partial_symtabs->psymtabs_addrmap,
320 /* FIXME: addrmaps currently do not handle overlayed sections,
321 so fall back to the non-addrmap case if we're debugging
322 overlays and the addrmap returned the wrong section. */
323 if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
325 struct partial_symbol *p;
327 /* NOTE: This assumes that every psymbol has a
328 corresponding msymbol, which is not necessarily
329 true; the debug info might be much richer than the
330 object's symbol table. */
331 p = find_pc_sect_psymbol (objfile, pst, pc, section);
333 || (p->address (objfile)
334 != BMSYMBOL_VALUE_ADDRESS (msymbol)))
338 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
339 PSYMTABS_ADDRMAP we used has already the best 1-byte
340 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
341 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
350 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
351 which still have no corresponding full SYMTABs read. But it is not
352 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
355 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
356 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
357 debug info type in single OBJFILE. */
359 for (partial_symtab *pst : require_partial_symbols (objfile, true))
360 if (!pst->psymtabs_addrmap_supported
361 && pc >= pst->text_low (objfile) && pc < pst->text_high (objfile))
363 struct partial_symtab *best_pst;
365 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
367 if (best_pst != NULL)
374 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
375 the definition of quick_symbol_functions in symfile.h. */
377 static struct compunit_symtab *
378 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
379 struct bound_minimal_symbol msymbol,
381 struct obj_section *section,
384 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
388 if (warn_if_readin && ps->readin_p ())
389 /* Might want to error() here (in case symtab is corrupt and
390 will cause a core dump), but maybe we can successfully
391 continue, so let's not. */
393 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
394 paddress (get_objfile_arch (objfile), pc));
395 psymtab_to_symtab (objfile, ps);
396 return ps->get_compunit_symtab ();
401 /* Find which partial symbol within a psymtab matches PC and SECTION.
402 Return NULL if none. */
404 static struct partial_symbol *
405 find_pc_sect_psymbol (struct objfile *objfile,
406 struct partial_symtab *psymtab, CORE_ADDR pc,
407 struct obj_section *section)
409 struct partial_symbol *best = NULL;
411 const CORE_ADDR textlow = psymtab->text_low (objfile);
413 gdb_assert (psymtab != NULL);
415 /* Cope with programs that start at address 0. */
416 best_pc = (textlow != 0) ? textlow - 1 : 0;
418 /* Search the global symbols as well as the static symbols, so that
419 find_pc_partial_function doesn't use a minimal symbol and thus
420 cache a bad endaddr. */
421 for (int i = 0; i < psymtab->n_global_syms; i++)
424 = objfile->partial_symtabs->global_psymbols[psymtab->globals_offset
427 if (p->domain == VAR_DOMAIN
428 && p->aclass == LOC_BLOCK
429 && pc >= p->address (objfile)
430 && (p->address (objfile) > best_pc
431 || (psymtab->text_low (objfile) == 0
432 && best_pc == 0 && p->address (objfile) == 0)))
434 if (section != NULL) /* Match on a specific section. */
436 if (!matching_obj_sections (p->obj_section (objfile),
440 best_pc = p->address (objfile);
445 for (int i = 0; i < psymtab->n_static_syms; i++)
448 = objfile->partial_symtabs->static_psymbols[psymtab->statics_offset
451 if (p->domain == VAR_DOMAIN
452 && p->aclass == LOC_BLOCK
453 && pc >= p->address (objfile)
454 && (p->address (objfile) > best_pc
455 || (psymtab->text_low (objfile) == 0
456 && best_pc == 0 && p->address (objfile) == 0)))
458 if (section != NULL) /* Match on a specific section. */
460 if (!matching_obj_sections (p->obj_section (objfile),
464 best_pc = p->address (objfile);
472 /* Psymtab version of lookup_symbol. See its definition in
473 the definition of quick_symbol_functions in symfile.h. */
475 static struct compunit_symtab *
476 psym_lookup_symbol (struct objfile *objfile,
477 block_enum block_index, const char *name,
478 const domain_enum domain)
480 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
481 struct compunit_symtab *stab_best = NULL;
483 lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
485 for (partial_symtab *ps : require_partial_symbols (objfile, true))
487 if (!ps->readin_p () && lookup_partial_symbol (objfile, ps, name,
488 psymtab_index, domain))
490 struct symbol *sym, *with_opaque = NULL;
491 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
492 /* Note: While psymtab_to_symtab can return NULL if the
493 partial symtab is empty, we can assume it won't here
494 because lookup_partial_symbol succeeded. */
495 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
496 const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
498 sym = block_find_symbol (block, name, domain,
499 block_find_non_opaque_type_preferred,
502 /* Some caution must be observed with overloaded functions
503 and methods, since the index will not contain any overload
504 information (but NAME might contain it). */
507 && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name))
509 if (with_opaque != NULL
510 && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name))
513 /* Keep looking through other psymtabs. */
520 /* Returns true if PSYM matches LOOKUP_NAME. */
523 psymbol_name_matches (partial_symbol *psym,
524 const lookup_name_info &lookup_name)
526 const language_defn *lang = language_def (psym->ginfo.language ());
527 symbol_name_matcher_ftype *name_match
528 = get_symbol_name_matcher (lang, lookup_name);
529 return name_match (psym->ginfo.search_name (), lookup_name, NULL);
532 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
533 the global block of PST if GLOBAL, and otherwise the static block.
534 MATCH is the comparison operation that returns true iff MATCH (s,
535 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
536 non-null, the symbols in the block are assumed to be ordered
537 according to it (allowing binary search). It must be compatible
538 with MATCH. Returns the symbol, if found, and otherwise NULL. */
540 static struct partial_symbol *
541 match_partial_symbol (struct objfile *objfile,
542 struct partial_symtab *pst, int global,
543 const lookup_name_info &name, domain_enum domain,
544 symbol_compare_ftype *ordered_compare)
546 struct partial_symbol **start, **psym;
547 struct partial_symbol **top, **real_top, **bottom, **center;
548 int length = (global ? pst->n_global_syms : pst->n_static_syms);
549 int do_linear_search = 1;
555 &objfile->partial_symtabs->global_psymbols[pst->globals_offset] :
556 &objfile->partial_symtabs->static_psymbols[pst->statics_offset]);
558 if (global && ordered_compare) /* Can use a binary search. */
560 do_linear_search = 0;
562 /* Binary search. This search is guaranteed to end with center
563 pointing at the earliest partial symbol whose name might be
564 correct. At that point *all* partial symbols with an
565 appropriate name will be checked against the correct
569 top = start + length - 1;
573 center = bottom + (top - bottom) / 2;
574 gdb_assert (center < top);
576 enum language lang = (*center)->ginfo.language ();
578 = name.language_lookup_name (lang).c_str ();
580 if (ordered_compare ((*center)->ginfo.search_name (),
586 gdb_assert (top == bottom);
588 while (top <= real_top
589 && psymbol_name_matches (*top, name))
591 if (symbol_matches_domain ((*top)->ginfo.language (),
592 (*top)->domain, domain))
598 /* Can't use a binary search or else we found during the binary search that
599 we should also do a linear search. */
601 if (do_linear_search)
603 for (psym = start; psym < start + length; psym++)
605 if (symbol_matches_domain ((*psym)->ginfo.language (),
606 (*psym)->domain, domain)
607 && psymbol_name_matches (*psym, name))
615 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
616 not contain any method/function instance information (since this would
617 force reading type information while reading psymtabs). Therefore,
618 if NAME contains overload information, it must be stripped before searching
621 static gdb::unique_xmalloc_ptr<char>
622 psymtab_search_name (const char *name)
624 switch (current_language->la_language)
628 if (strchr (name, '('))
630 gdb::unique_xmalloc_ptr<char> ret = cp_remove_params (name);
642 return make_unique_xstrdup (name);
645 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
646 Check the global symbols if GLOBAL, the static symbols if not. */
648 static struct partial_symbol *
649 lookup_partial_symbol (struct objfile *objfile,
650 struct partial_symtab *pst, const char *name,
651 int global, domain_enum domain)
653 struct partial_symbol **start, **psym;
654 struct partial_symbol **top, **real_top, **bottom, **center;
655 int length = (global ? pst->n_global_syms : pst->n_static_syms);
656 int do_linear_search = 1;
661 gdb::unique_xmalloc_ptr<char> search_name = psymtab_search_name (name);
663 lookup_name_info lookup_name (search_name.get (), symbol_name_match_type::FULL);
666 &objfile->partial_symtabs->global_psymbols[pst->globals_offset] :
667 &objfile->partial_symtabs->static_psymbols[pst->statics_offset]);
669 if (global) /* This means we can use a binary search. */
671 do_linear_search = 0;
673 /* Binary search. This search is guaranteed to end with center
674 pointing at the earliest partial symbol whose name might be
675 correct. At that point *all* partial symbols with an
676 appropriate name will be checked against the correct
680 top = start + length - 1;
684 center = bottom + (top - bottom) / 2;
686 internal_error (__FILE__, __LINE__,
687 _("failed internal consistency check"));
688 if (strcmp_iw_ordered ((*center)->ginfo.search_name (),
689 search_name.get ()) >= 0)
698 if (!(top == bottom))
699 internal_error (__FILE__, __LINE__,
700 _("failed internal consistency check"));
702 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
703 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
704 while (top >= start && symbol_matches_search_name (&(*top)->ginfo,
708 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
711 while (top <= real_top && symbol_matches_search_name (&(*top)->ginfo,
714 if (symbol_matches_domain ((*top)->ginfo.language (),
715 (*top)->domain, domain))
721 /* Can't use a binary search or else we found during the binary search that
722 we should also do a linear search. */
724 if (do_linear_search)
726 for (psym = start; psym < start + length; psym++)
728 if (symbol_matches_domain ((*psym)->ginfo.language (),
729 (*psym)->domain, domain)
730 && symbol_matches_search_name (&(*psym)->ginfo, lookup_name))
738 /* Get the symbol table that corresponds to a partial_symtab.
739 This is fast after the first time you do it.
740 The result will be NULL if the primary symtab has no symbols,
741 which can happen. Otherwise the result is the primary symtab
742 that contains PST. */
744 static struct compunit_symtab *
745 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
747 /* If it is a shared psymtab, find an unshared psymtab that includes
748 it. Any such psymtab will do. */
749 while (pst->user != NULL)
752 /* If it's been looked up before, return it. */
753 if (pst->get_compunit_symtab ())
754 return pst->get_compunit_symtab ();
756 /* If it has not yet been read in, read it. */
757 if (!pst->readin_p ())
759 scoped_restore decrementer = increment_reading_symtab ();
763 printf_filtered (_("Reading in symbols for %s..."),
765 gdb_flush (gdb_stdout);
768 pst->read_symtab (objfile);
770 /* Finish up the debug error message. */
772 printf_filtered (_("done.\n"));
775 return pst->get_compunit_symtab ();
778 /* Psymtab version of find_last_source_symtab. See its definition in
779 the definition of quick_symbol_functions in symfile.h. */
781 static struct symtab *
782 psym_find_last_source_symtab (struct objfile *ofp)
784 struct partial_symtab *cs_pst = NULL;
786 for (partial_symtab *ps : require_partial_symbols (ofp, true))
788 const char *name = ps->filename;
789 int len = strlen (name);
791 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
792 || strcmp (name, "<<C++-namespaces>>") == 0)))
798 if (cs_pst->readin_p ())
800 internal_error (__FILE__, __LINE__,
801 _("select_source_symtab: "
802 "readin pst found and no symtabs."));
806 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
810 return compunit_primary_filetab (cust);
816 /* Psymtab version of forget_cached_source_info. See its definition in
817 the definition of quick_symbol_functions in symfile.h. */
820 psym_forget_cached_source_info (struct objfile *objfile)
822 for (partial_symtab *pst : require_partial_symbols (objfile, true))
824 if (pst->fullname != NULL)
826 xfree (pst->fullname);
827 pst->fullname = NULL;
833 print_partial_symbols (struct gdbarch *gdbarch, struct objfile *objfile,
834 struct partial_symbol **p, int count, const char *what,
835 struct ui_file *outfile)
837 fprintf_filtered (outfile, " %s partial symbols:\n", what);
841 fprintf_filtered (outfile, " `%s'", (*p)->ginfo.linkage_name ());
842 if ((*p)->ginfo.demangled_name () != NULL)
844 fprintf_filtered (outfile, " `%s'",
845 (*p)->ginfo.demangled_name ());
847 fputs_filtered (", ", outfile);
848 switch ((*p)->domain)
851 fputs_filtered ("undefined domain, ", outfile);
854 /* This is the usual thing -- don't print it. */
857 fputs_filtered ("struct domain, ", outfile);
860 fputs_filtered ("module domain, ", outfile);
863 fputs_filtered ("label domain, ", outfile);
865 case COMMON_BLOCK_DOMAIN:
866 fputs_filtered ("common block domain, ", outfile);
869 fputs_filtered ("<invalid domain>, ", outfile);
872 switch ((*p)->aclass)
875 fputs_filtered ("undefined", outfile);
878 fputs_filtered ("constant int", outfile);
881 fputs_filtered ("static", outfile);
884 fputs_filtered ("register", outfile);
887 fputs_filtered ("pass by value", outfile);
890 fputs_filtered ("pass by reference", outfile);
892 case LOC_REGPARM_ADDR:
893 fputs_filtered ("register address parameter", outfile);
896 fputs_filtered ("stack parameter", outfile);
899 fputs_filtered ("type", outfile);
902 fputs_filtered ("label", outfile);
905 fputs_filtered ("function", outfile);
907 case LOC_CONST_BYTES:
908 fputs_filtered ("constant bytes", outfile);
911 fputs_filtered ("unresolved", outfile);
913 case LOC_OPTIMIZED_OUT:
914 fputs_filtered ("optimized out", outfile);
917 fputs_filtered ("computed at runtime", outfile);
920 fputs_filtered ("<invalid location>", outfile);
923 fputs_filtered (", ", outfile);
924 fputs_filtered (paddress (gdbarch, (*p)->unrelocated_address ()), outfile);
925 fprintf_filtered (outfile, "\n");
931 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
932 struct ui_file *outfile)
934 struct gdbarch *gdbarch = get_objfile_arch (objfile);
937 if (psymtab->anonymous)
939 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
944 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
947 fprintf_filtered (outfile, "(object ");
948 gdb_print_host_address (psymtab, outfile);
949 fprintf_filtered (outfile, ")\n\n");
950 fprintf_filtered (outfile, " Read from object file %s (",
951 objfile_name (objfile));
952 gdb_print_host_address (objfile, outfile);
953 fprintf_filtered (outfile, ")\n");
955 if (psymtab->readin_p ())
957 fprintf_filtered (outfile,
958 " Full symtab was read (at ");
959 gdb_print_host_address (psymtab->get_compunit_symtab (), outfile);
960 fprintf_filtered (outfile, ")\n");
963 fprintf_filtered (outfile, " Symbols cover text addresses ");
964 fputs_filtered (paddress (gdbarch, psymtab->text_low (objfile)), outfile);
965 fprintf_filtered (outfile, "-");
966 fputs_filtered (paddress (gdbarch, psymtab->text_high (objfile)), outfile);
967 fprintf_filtered (outfile, "\n");
968 fprintf_filtered (outfile, " Address map supported - %s.\n",
969 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
970 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
971 psymtab->number_of_dependencies);
972 for (i = 0; i < psymtab->number_of_dependencies; i++)
974 fprintf_filtered (outfile, " %d ", i);
975 gdb_print_host_address (psymtab->dependencies[i], outfile);
976 fprintf_filtered (outfile, " %s\n",
977 psymtab->dependencies[i]->filename);
979 if (psymtab->user != NULL)
981 fprintf_filtered (outfile, " Shared partial symtab with user ");
982 gdb_print_host_address (psymtab->user, outfile);
983 fprintf_filtered (outfile, "\n");
985 if (psymtab->n_global_syms > 0)
987 print_partial_symbols
989 &objfile->partial_symtabs->global_psymbols[psymtab->globals_offset],
990 psymtab->n_global_syms, "Global", outfile);
992 if (psymtab->n_static_syms > 0)
994 print_partial_symbols
996 &objfile->partial_symtabs->static_psymbols[psymtab->statics_offset],
997 psymtab->n_static_syms, "Static", outfile);
999 fprintf_filtered (outfile, "\n");
1002 /* Psymtab version of print_stats. See its definition in
1003 the definition of quick_symbol_functions in symfile.h. */
1006 psym_print_stats (struct objfile *objfile)
1011 for (partial_symtab *ps : require_partial_symbols (objfile, true))
1013 if (!ps->readin_p ())
1016 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1019 /* Psymtab version of dump. See its definition in
1020 the definition of quick_symbol_functions in symfile.h. */
1023 psym_dump (struct objfile *objfile)
1025 struct partial_symtab *psymtab;
1027 if (objfile->partial_symtabs->psymtabs)
1029 printf_filtered ("Psymtabs:\n");
1030 for (psymtab = objfile->partial_symtabs->psymtabs;
1032 psymtab = psymtab->next)
1034 printf_filtered ("%s at ",
1036 gdb_print_host_address (psymtab, gdb_stdout);
1037 printf_filtered (", ");
1040 printf_filtered ("\n\n");
1044 /* Psymtab version of expand_symtabs_for_function. See its definition in
1045 the definition of quick_symbol_functions in symfile.h. */
1048 psym_expand_symtabs_for_function (struct objfile *objfile,
1049 const char *func_name)
1051 for (partial_symtab *ps : require_partial_symbols (objfile, true))
1053 if (ps->readin_p ())
1056 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1058 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1060 psymtab_to_symtab (objfile, ps);
1064 /* Psymtab version of expand_all_symtabs. See its definition in
1065 the definition of quick_symbol_functions in symfile.h. */
1068 psym_expand_all_symtabs (struct objfile *objfile)
1070 for (partial_symtab *psymtab : require_partial_symbols (objfile, true))
1071 psymtab_to_symtab (objfile, psymtab);
1074 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1075 the definition of quick_symbol_functions in symfile.h. */
1078 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1079 const char *fullname)
1081 for (partial_symtab *p : require_partial_symbols (objfile, true))
1083 /* Anonymous psymtabs don't have a name of a source file. */
1087 /* psymtab_to_fullname tries to open the file which is slow.
1088 Don't call it if we know the basenames don't match. */
1089 if ((basenames_may_differ
1090 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1091 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1092 psymtab_to_symtab (objfile, p);
1096 /* Psymtab version of map_symbol_filenames. See its definition in
1097 the definition of quick_symbol_functions in symfile.h. */
1100 psym_map_symbol_filenames (struct objfile *objfile,
1101 symbol_filename_ftype *fun, void *data,
1104 for (partial_symtab *ps : require_partial_symbols (objfile, true))
1106 const char *fullname;
1108 if (ps->readin_p ())
1111 /* We can skip shared psymtabs here, because any file name will be
1112 attached to the unshared psymtab. */
1113 if (ps->user != NULL)
1116 /* Anonymous psymtabs don't have a file name. */
1122 fullname = psymtab_to_fullname (ps);
1125 (*fun) (ps->filename, fullname, data);
1129 /* Finds the fullname that a partial_symtab represents.
1131 If this functions finds the fullname, it will save it in ps->fullname
1132 and it will also return the value.
1134 If this function fails to find the file that this partial_symtab represents,
1135 NULL will be returned and ps->fullname will be set to NULL. */
1138 psymtab_to_fullname (struct partial_symtab *ps)
1140 gdb_assert (!ps->anonymous);
1142 /* Use cached copy if we have it.
1143 We rely on forget_cached_source_info being called appropriately
1144 to handle cases like the file being moved. */
1145 if (ps->fullname == NULL)
1147 gdb::unique_xmalloc_ptr<char> fullname;
1148 scoped_fd fd = find_and_open_source (ps->filename, ps->dirname,
1150 ps->fullname = fullname.release ();
1154 /* rewrite_source_path would be applied by find_and_open_source, we
1155 should report the pathname where GDB tried to find the file. */
1157 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1158 fullname.reset (xstrdup (ps->filename));
1160 fullname.reset (concat (ps->dirname, SLASH_STRING,
1161 ps->filename, (char *) NULL));
1163 ps->fullname = rewrite_source_path (fullname.get ()).release ();
1164 if (ps->fullname == NULL)
1165 ps->fullname = fullname.release ();
1169 return ps->fullname;
1172 /* Psymtab version of map_matching_symbols. See its definition in
1173 the definition of quick_symbol_functions in symfile.h. */
1176 psym_map_matching_symbols
1177 (struct objfile *objfile,
1178 const lookup_name_info &name, domain_enum domain,
1180 gdb::function_view<symbol_found_callback_ftype> callback,
1181 symbol_compare_ftype *ordered_compare)
1183 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1185 for (partial_symtab *ps : require_partial_symbols (objfile, true))
1189 || match_partial_symbol (objfile, ps, global, name, domain,
1192 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1193 const struct block *block;
1197 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1198 if (!iterate_over_symbols_terminated (block, name,
1205 /* A helper for psym_expand_symtabs_matching that handles searching
1206 included psymtabs. This returns true if a symbol is found, and
1207 false otherwise. It also updates the 'searched_flag' on the
1208 various psymtabs that it searches. */
1211 recursively_search_psymtabs
1212 (struct partial_symtab *ps,
1213 struct objfile *objfile,
1214 enum search_domain domain,
1215 const lookup_name_info &lookup_name,
1216 gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
1219 enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
1222 if (ps->searched_flag != PST_NOT_SEARCHED)
1223 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1225 /* Recurse into shared psymtabs first, because they may have already
1226 been searched, and this could save some time. */
1227 for (i = 0; i < ps->number_of_dependencies; ++i)
1231 /* Skip non-shared dependencies, these are handled elsewhere. */
1232 if (ps->dependencies[i]->user == NULL)
1235 r = recursively_search_psymtabs (ps->dependencies[i],
1236 objfile, domain, lookup_name,
1240 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1245 partial_symbol **gbound
1246 = (objfile->partial_symtabs->global_psymbols.data ()
1247 + ps->globals_offset + ps->n_global_syms);
1248 partial_symbol **sbound
1249 = (objfile->partial_symtabs->static_psymbols.data ()
1250 + ps->statics_offset + ps->n_static_syms);
1251 partial_symbol **bound = gbound;
1253 /* Go through all of the symbols stored in a partial
1254 symtab in one loop. */
1255 partial_symbol **psym = (objfile->partial_symtabs->global_psymbols.data ()
1256 + ps->globals_offset);
1261 if (bound == gbound && ps->n_static_syms != 0)
1263 psym = (objfile->partial_symtabs->static_psymbols.data ()
1264 + ps->statics_offset);
1275 if ((domain == ALL_DOMAIN
1276 || (domain == MODULES_DOMAIN
1277 && (*psym)->domain == MODULE_DOMAIN)
1278 || (domain == VARIABLES_DOMAIN
1279 && (*psym)->aclass != LOC_TYPEDEF
1280 && (*psym)->aclass != LOC_BLOCK)
1281 || (domain == FUNCTIONS_DOMAIN
1282 && (*psym)->aclass == LOC_BLOCK)
1283 || (domain == TYPES_DOMAIN
1284 && (*psym)->aclass == LOC_TYPEDEF))
1285 && psymbol_name_matches (*psym, lookup_name)
1286 && (sym_matcher == NULL
1287 || sym_matcher ((*psym)->ginfo.search_name ())))
1289 /* Found a match, so notify our caller. */
1290 result = PST_SEARCHED_AND_FOUND;
1297 ps->searched_flag = result;
1298 return result == PST_SEARCHED_AND_FOUND;
1301 /* Psymtab version of expand_symtabs_matching. See its definition in
1302 the definition of quick_symbol_functions in symfile.h. */
1305 psym_expand_symtabs_matching
1306 (struct objfile *objfile,
1307 gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
1308 const lookup_name_info &lookup_name_in,
1309 gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
1310 gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
1311 enum search_domain domain)
1313 lookup_name_info lookup_name = lookup_name_in.make_ignore_params ();
1315 /* Clear the search flags. */
1316 for (partial_symtab *ps : require_partial_symbols (objfile, true))
1317 ps->searched_flag = PST_NOT_SEARCHED;
1319 for (partial_symtab *ps : objfile->psymtabs ())
1323 if (ps->readin_p ())
1326 /* We skip shared psymtabs because file-matching doesn't apply
1327 to them; but we search them later in the loop. */
1328 if (ps->user != NULL)
1338 match = file_matcher (ps->filename, false);
1341 /* Before we invoke realpath, which can get expensive when many
1342 files are involved, do a quick comparison of the basenames. */
1343 if (basenames_may_differ
1344 || file_matcher (lbasename (ps->filename), true))
1345 match = file_matcher (psymtab_to_fullname (ps), false);
1351 if (recursively_search_psymtabs (ps, objfile, domain,
1352 lookup_name, symbol_matcher))
1354 struct compunit_symtab *symtab =
1355 psymtab_to_symtab (objfile, ps);
1357 if (expansion_notify != NULL)
1358 expansion_notify (symtab);
1363 /* Psymtab version of has_symbols. See its definition in
1364 the definition of quick_symbol_functions in symfile.h. */
1367 psym_has_symbols (struct objfile *objfile)
1369 return objfile->partial_symtabs->psymtabs != NULL;
1372 /* Helper function for psym_find_compunit_symtab_by_address that fills
1373 in psymbol_map for a given range of psymbols. */
1376 psym_fill_psymbol_map (struct objfile *objfile,
1377 struct partial_symtab *psymtab,
1378 std::set<CORE_ADDR> *seen_addrs,
1379 const std::vector<partial_symbol *> &symbols,
1383 for (int i = 0; i < length; ++i)
1385 struct partial_symbol *psym = symbols[start + i];
1387 if (psym->aclass == LOC_STATIC)
1389 CORE_ADDR addr = psym->address (objfile);
1390 if (seen_addrs->find (addr) == seen_addrs->end ())
1392 seen_addrs->insert (addr);
1393 objfile->psymbol_map.emplace_back (addr, psymtab);
1399 /* See find_compunit_symtab_by_address in quick_symbol_functions, in
1402 static compunit_symtab *
1403 psym_find_compunit_symtab_by_address (struct objfile *objfile,
1406 if (objfile->psymbol_map.empty ())
1408 std::set<CORE_ADDR> seen_addrs;
1410 for (partial_symtab *pst : require_partial_symbols (objfile, true))
1412 psym_fill_psymbol_map (objfile, pst,
1414 objfile->partial_symtabs->global_psymbols,
1415 pst->globals_offset,
1416 pst->n_global_syms);
1417 psym_fill_psymbol_map (objfile, pst,
1419 objfile->partial_symtabs->static_psymbols,
1420 pst->statics_offset,
1421 pst->n_static_syms);
1424 objfile->psymbol_map.shrink_to_fit ();
1426 std::sort (objfile->psymbol_map.begin (), objfile->psymbol_map.end (),
1427 [] (const std::pair<CORE_ADDR, partial_symtab *> &a,
1428 const std::pair<CORE_ADDR, partial_symtab *> &b)
1430 return a.first < b.first;
1434 auto iter = std::lower_bound
1435 (objfile->psymbol_map.begin (), objfile->psymbol_map.end (), address,
1436 [] (const std::pair<CORE_ADDR, partial_symtab *> &a,
1442 if (iter == objfile->psymbol_map.end () || iter->first != address)
1445 return psymtab_to_symtab (objfile, iter->second);
1448 const struct quick_symbol_functions psym_functions =
1451 psym_find_last_source_symtab,
1452 psym_forget_cached_source_info,
1453 psym_map_symtabs_matching_filename,
1457 psym_expand_symtabs_for_function,
1458 psym_expand_all_symtabs,
1459 psym_expand_symtabs_with_fullname,
1460 psym_map_matching_symbols,
1461 psym_expand_symtabs_matching,
1462 psym_find_pc_sect_compunit_symtab,
1463 psym_find_compunit_symtab_by_address,
1464 psym_map_symbol_filenames
1470 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1472 /* Sort the global list; don't sort the static list. */
1473 auto begin = objfile->partial_symtabs->global_psymbols.begin ();
1474 std::advance (begin, pst->globals_offset);
1476 /* The psymbols for this partial_symtab are currently at the end of the
1478 auto end = objfile->partial_symtabs->global_psymbols.end ();
1480 std::sort (begin, end, [] (partial_symbol *s1, partial_symbol *s2)
1482 return strcmp_iw_ordered (s1->ginfo.search_name (),
1483 s2->ginfo.search_name ()) < 0;
1487 /* Partially fill a partial symtab. It will be completely filled at
1488 the end of the symbol list. */
1490 partial_symtab::partial_symtab (const char *filename,
1491 struct objfile *objfile,
1493 : partial_symtab (filename, objfile)
1495 set_text_low (textlow);
1496 set_text_high (raw_text_low ()); /* default */
1497 globals_offset = objfile->partial_symtabs->global_psymbols.size ();
1498 statics_offset = objfile->partial_symtabs->static_psymbols.size ();
1501 /* Perform "finishing up" operations of a partial symtab. */
1504 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
1506 pst->n_global_syms = (objfile->partial_symtabs->global_psymbols.size ()
1507 - pst->globals_offset);
1508 pst->n_static_syms = (objfile->partial_symtabs->static_psymbols.size ()
1509 - pst->statics_offset);
1511 sort_pst_symbols (objfile, pst);
1514 /* Calculate a hash code for the given partial symbol. The hash is
1515 calculated using the symbol's value, language, domain, class
1516 and name. These are the values which are set by
1517 add_psymbol_to_bcache. */
1519 static unsigned long
1520 psymbol_hash (const void *addr, int length)
1522 unsigned long h = 0;
1523 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1524 unsigned int lang = psymbol->ginfo.language ();
1525 unsigned int domain = psymbol->domain;
1526 unsigned int theclass = psymbol->aclass;
1528 h = fast_hash (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
1529 h = fast_hash (&lang, sizeof (unsigned int), h);
1530 h = fast_hash (&domain, sizeof (unsigned int), h);
1531 h = fast_hash (&theclass, sizeof (unsigned int), h);
1532 /* Note that psymbol names are interned via compute_and_set_names, so
1533 there's no need to hash the contents of the name here. */
1534 h = fast_hash (&psymbol->ginfo.m_name, sizeof (psymbol->ginfo.m_name), h);
1539 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1540 For the comparison this function uses a symbols value,
1541 language, domain, class and name. */
1544 psymbol_compare (const void *addr1, const void *addr2, int length)
1546 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1547 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1549 return (memcmp (&sym1->ginfo.value, &sym2->ginfo.value,
1550 sizeof (sym1->ginfo.value)) == 0
1551 && sym1->ginfo.language () == sym2->ginfo.language ()
1552 && sym1->domain == sym2->domain
1553 && sym1->aclass == sym2->aclass
1554 /* Note that psymbol names are interned via
1555 compute_and_set_names, so there's no need to compare the
1556 contents of the name here. */
1557 && sym1->ginfo.linkage_name () == sym2->ginfo.linkage_name ());
1560 /* Helper function, initialises partial symbol structure and stashes
1561 it into objfile's bcache. Note that our caching mechanism will
1562 use all fields of struct partial_symbol to determine hash value of the
1563 structure. In other words, having two symbols with the same name but
1564 different domain (or address) is possible and correct. */
1566 static struct partial_symbol *
1567 add_psymbol_to_bcache (gdb::string_view name, bool copy_name,
1569 enum address_class theclass,
1572 enum language language, struct objfile *objfile,
1575 struct partial_symbol psymbol;
1576 memset (&psymbol, 0, sizeof (psymbol));
1578 psymbol.set_unrelocated_address (coreaddr);
1579 psymbol.ginfo.section = section;
1580 psymbol.domain = domain;
1581 psymbol.aclass = theclass;
1582 psymbol.ginfo.set_language (language, objfile->partial_symtabs->obstack ());
1583 psymbol.ginfo.compute_and_set_names (name, copy_name, objfile->per_bfd);
1585 /* Stash the partial symbol away in the cache. */
1586 return ((struct partial_symbol *)
1587 objfile->partial_symtabs->psymbol_cache.insert
1588 (&psymbol, sizeof (struct partial_symbol), added));
1591 /* Helper function, adds partial symbol to the given partial symbol list. */
1594 append_psymbol_to_list (std::vector<partial_symbol *> *list,
1595 struct partial_symbol *psym,
1596 struct objfile *objfile)
1598 list->push_back (psym);
1599 OBJSTAT (objfile, n_psyms++);
1602 /* See psympriv.h. */
1605 add_psymbol_to_list (gdb::string_view name, bool copy_name,
1607 enum address_class theclass,
1609 psymbol_placement where,
1611 enum language language, struct objfile *objfile)
1613 struct partial_symbol *psym;
1617 /* Stash the partial symbol away in the cache. */
1618 psym = add_psymbol_to_bcache (name, copy_name, domain, theclass,
1619 section, coreaddr, language, objfile, &added);
1621 /* Do not duplicate global partial symbols. */
1622 if (where == psymbol_placement::GLOBAL && !added)
1625 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1626 std::vector<partial_symbol *> *list
1627 = (where == psymbol_placement::STATIC
1628 ? &objfile->partial_symtabs->static_psymbols
1629 : &objfile->partial_symtabs->global_psymbols);
1630 append_psymbol_to_list (list, psym, objfile);
1633 /* See psympriv.h. */
1636 init_psymbol_list (struct objfile *objfile, int total_symbols)
1638 if (objfile->partial_symtabs->global_psymbols.capacity () == 0
1639 && objfile->partial_symtabs->static_psymbols.capacity () == 0)
1641 /* Current best guess is that approximately a twentieth of the
1642 total symbols (in a debugging file) are global or static
1643 oriented symbols, then multiply that by slop factor of
1645 objfile->partial_symtabs->global_psymbols.reserve (total_symbols / 10);
1646 objfile->partial_symtabs->static_psymbols.reserve (total_symbols / 10);
1650 /* See psympriv.h. */
1652 partial_symtab::partial_symtab (const char *filename_, struct objfile *objfile)
1653 : searched_flag (PST_NOT_SEARCHED),
1657 objfile->partial_symtabs->install_psymtab (this);
1659 filename = objfile->intern (filename_);
1661 if (symtab_create_debug)
1663 /* Be a bit clever with debugging messages, and don't print objfile
1664 every time, only when it changes. */
1665 static char *last_objfile_name = NULL;
1667 if (last_objfile_name == NULL
1668 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1670 xfree (last_objfile_name);
1671 last_objfile_name = xstrdup (objfile_name (objfile));
1672 fprintf_filtered (gdb_stdlog,
1673 "Creating one or more psymtabs for objfile %s ...\n",
1676 fprintf_filtered (gdb_stdlog,
1677 "Created psymtab %s for module %s.\n",
1678 host_address_to_string (this), filename);
1682 /* See psympriv.h. */
1685 partial_symtab::read_dependencies (struct objfile *objfile)
1687 for (int i = 0; i < number_of_dependencies; ++i)
1689 if (!dependencies[i]->readin_p ()
1690 && dependencies[i]->user == NULL)
1692 /* Inform about additional files to be read in. */
1695 fputs_filtered (" ", gdb_stdout);
1697 fputs_filtered ("and ", gdb_stdout);
1699 printf_filtered ("%s...", dependencies[i]->filename);
1700 wrap_here (""); /* Flush output */
1701 gdb_flush (gdb_stdout);
1703 dependencies[i]->expand_psymtab (objfile);
1710 psymtab_storage::discard_psymtab (struct partial_symtab *pst)
1712 struct partial_symtab **prev_pst;
1715 Empty psymtabs happen as a result of header files which don't
1716 have any symbols in them. There can be a lot of them. But this
1717 check is wrong, in that a psymtab with N_SLINE entries but
1718 nothing else is not empty, but we don't realize that. Fixing
1719 that without slowing things down might be tricky. */
1721 /* First, snip it out of the psymtab chain. */
1723 prev_pst = &psymtabs;
1724 while ((*prev_pst) != pst)
1725 prev_pst = &((*prev_pst)->next);
1726 (*prev_pst) = pst->next;
1732 /* We need to pass a couple of items to the addrmap_foreach function,
1735 struct dump_psymtab_addrmap_data
1737 struct objfile *objfile;
1738 struct partial_symtab *psymtab;
1739 struct ui_file *outfile;
1741 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1742 If so, we want to print the next one as well (since the next addrmap
1743 entry defines the end of the range). */
1744 int previous_matched;
1747 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1750 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
1752 struct dump_psymtab_addrmap_data *data
1753 = (struct dump_psymtab_addrmap_data *) datap;
1754 struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
1755 struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
1756 const char *psymtab_address_or_end = NULL;
1760 if (data->psymtab == NULL
1761 || data->psymtab == addrmap_psymtab)
1762 psymtab_address_or_end = host_address_to_string (addrmap_psymtab);
1763 else if (data->previous_matched)
1764 psymtab_address_or_end = "<ends here>";
1766 if (data->psymtab == NULL
1767 || data->psymtab == addrmap_psymtab
1768 || data->previous_matched)
1770 fprintf_filtered (data->outfile, " %s%s %s\n",
1771 data->psymtab != NULL ? " " : "",
1772 paddress (gdbarch, start_addr),
1773 psymtab_address_or_end);
1776 data->previous_matched = (data->psymtab == NULL
1777 || data->psymtab == addrmap_psymtab);
1782 /* Helper function for maintenance_print_psymbols to print the addrmap
1783 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1786 dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
1787 struct ui_file *outfile)
1789 struct dump_psymtab_addrmap_data addrmap_dump_data;
1791 if ((psymtab == NULL
1792 || psymtab->psymtabs_addrmap_supported)
1793 && objfile->partial_symtabs->psymtabs_addrmap != NULL)
1795 addrmap_dump_data.objfile = objfile;
1796 addrmap_dump_data.psymtab = psymtab;
1797 addrmap_dump_data.outfile = outfile;
1798 addrmap_dump_data.previous_matched = 0;
1799 fprintf_filtered (outfile, "%sddress map:\n",
1800 psymtab == NULL ? "Entire a" : " A");
1801 addrmap_foreach (objfile->partial_symtabs->psymtabs_addrmap,
1802 dump_psymtab_addrmap_1, &addrmap_dump_data);
1807 maintenance_print_psymbols (const char *args, int from_tty)
1809 struct ui_file *outfile = gdb_stdout;
1810 char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
1811 int i, outfile_idx, found;
1813 struct obj_section *section = NULL;
1817 gdb_argv argv (args);
1819 for (i = 0; argv != NULL && argv[i] != NULL; ++i)
1821 if (strcmp (argv[i], "-pc") == 0)
1823 if (argv[i + 1] == NULL)
1824 error (_("Missing pc value"));
1825 address_arg = argv[++i];
1827 else if (strcmp (argv[i], "-source") == 0)
1829 if (argv[i + 1] == NULL)
1830 error (_("Missing source file"));
1831 source_arg = argv[++i];
1833 else if (strcmp (argv[i], "-objfile") == 0)
1835 if (argv[i + 1] == NULL)
1836 error (_("Missing objfile name"));
1837 objfile_arg = argv[++i];
1839 else if (strcmp (argv[i], "--") == 0)
1841 /* End of options. */
1845 else if (argv[i][0] == '-')
1847 /* Future proofing: Don't allow OUTFILE to begin with "-". */
1848 error (_("Unknown option: %s"), argv[i]);
1855 if (address_arg != NULL && source_arg != NULL)
1856 error (_("Must specify at most one of -pc and -source"));
1858 stdio_file arg_outfile;
1860 if (argv != NULL && argv[outfile_idx] != NULL)
1862 if (argv[outfile_idx + 1] != NULL)
1863 error (_("Junk at end of command"));
1864 gdb::unique_xmalloc_ptr<char> outfile_name
1865 (tilde_expand (argv[outfile_idx]));
1866 if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
1867 perror_with_name (outfile_name.get ());
1868 outfile = &arg_outfile;
1871 if (address_arg != NULL)
1873 pc = parse_and_eval_address (address_arg);
1874 /* If we fail to find a section, that's ok, try the lookup anyway. */
1875 section = find_pc_section (pc);
1879 for (objfile *objfile : current_program_space->objfiles ())
1881 int printed_objfile_header = 0;
1882 int print_for_objfile = 1;
1885 if (objfile_arg != NULL)
1887 = compare_filenames_for_search (objfile_name (objfile),
1889 if (!print_for_objfile)
1892 if (address_arg != NULL)
1894 struct bound_minimal_symbol msymbol = { NULL, NULL };
1896 /* We don't assume each pc has a unique objfile (this is for
1898 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc,
1902 if (!printed_objfile_header)
1904 outfile->printf ("\nPartial symtabs for objfile %s\n",
1905 objfile_name (objfile));
1906 printed_objfile_header = 1;
1908 dump_psymtab (objfile, ps, outfile);
1909 dump_psymtab_addrmap (objfile, ps, outfile);
1915 for (partial_symtab *ps : require_partial_symbols (objfile, true))
1917 int print_for_source = 0;
1920 if (source_arg != NULL)
1923 = compare_filenames_for_search (ps->filename, source_arg);
1926 if (source_arg == NULL
1927 || print_for_source)
1929 if (!printed_objfile_header)
1931 outfile->printf ("\nPartial symtabs for objfile %s\n",
1932 objfile_name (objfile));
1933 printed_objfile_header = 1;
1935 dump_psymtab (objfile, ps, outfile);
1936 dump_psymtab_addrmap (objfile, ps, outfile);
1941 /* If we're printing all the objfile's symbols dump the full addrmap. */
1943 if (address_arg == NULL
1944 && source_arg == NULL
1945 && objfile->partial_symtabs->psymtabs_addrmap != NULL)
1947 outfile->puts ("\n");
1948 dump_psymtab_addrmap (objfile, NULL, outfile);
1954 if (address_arg != NULL)
1955 error (_("No partial symtab for address: %s"), address_arg);
1956 if (source_arg != NULL)
1957 error (_("No partial symtab for source file: %s"), source_arg);
1961 /* List all the partial symbol tables whose names match REGEXP (optional). */
1964 maintenance_info_psymtabs (const char *regexp, int from_tty)
1966 struct program_space *pspace;
1971 ALL_PSPACES (pspace)
1972 for (objfile *objfile : pspace->objfiles ())
1974 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1976 /* We don't want to print anything for this objfile until we
1977 actually find a symtab whose name matches. */
1978 int printed_objfile_start = 0;
1980 for (partial_symtab *psymtab : require_partial_symbols (objfile, true))
1985 || re_exec (psymtab->filename))
1987 if (! printed_objfile_start)
1989 printf_filtered ("{ objfile %s ", objfile_name (objfile));
1991 printf_filtered ("((struct objfile *) %s)\n",
1992 host_address_to_string (objfile));
1993 printed_objfile_start = 1;
1996 printf_filtered (" { psymtab %s ", psymtab->filename);
1998 printf_filtered ("((struct partial_symtab *) %s)\n",
1999 host_address_to_string (psymtab));
2001 printf_filtered (" readin %s\n",
2002 psymtab->readin_p () ? "yes" : "no");
2003 printf_filtered (" fullname %s\n",
2005 ? psymtab->fullname : "(null)");
2006 printf_filtered (" text addresses ");
2007 fputs_filtered (paddress (gdbarch,
2008 psymtab->text_low (objfile)),
2010 printf_filtered (" -- ");
2011 fputs_filtered (paddress (gdbarch,
2012 psymtab->text_high (objfile)),
2014 printf_filtered ("\n");
2015 printf_filtered (" psymtabs_addrmap_supported %s\n",
2016 (psymtab->psymtabs_addrmap_supported
2018 printf_filtered (" globals ");
2019 if (psymtab->n_global_syms)
2021 auto p = &(objfile->partial_symtabs
2022 ->global_psymbols[psymtab->globals_offset]);
2025 ("(* (struct partial_symbol **) %s @ %d)\n",
2026 host_address_to_string (p),
2027 psymtab->n_global_syms);
2030 printf_filtered ("(none)\n");
2031 printf_filtered (" statics ");
2032 if (psymtab->n_static_syms)
2034 auto p = &(objfile->partial_symtabs
2035 ->static_psymbols[psymtab->statics_offset]);
2038 ("(* (struct partial_symbol **) %s @ %d)\n",
2039 host_address_to_string (p),
2040 psymtab->n_static_syms);
2043 printf_filtered ("(none)\n");
2044 printf_filtered (" dependencies ");
2045 if (psymtab->number_of_dependencies)
2049 printf_filtered ("{\n");
2050 for (i = 0; i < psymtab->number_of_dependencies; i++)
2052 struct partial_symtab *dep = psymtab->dependencies[i];
2054 /* Note the string concatenation there --- no
2056 printf_filtered (" psymtab %s "
2057 "((struct partial_symtab *) %s)\n",
2059 host_address_to_string (dep));
2061 printf_filtered (" }\n");
2064 printf_filtered ("(none)\n");
2065 printf_filtered (" }\n");
2069 if (printed_objfile_start)
2070 printf_filtered ("}\n");
2074 /* Check consistency of currently expanded psymtabs vs symtabs. */
2077 maintenance_check_psymtabs (const char *ignore, int from_tty)
2080 struct compunit_symtab *cust = NULL;
2081 const struct blockvector *bv;
2082 const struct block *b;
2085 for (objfile *objfile : current_program_space->objfiles ())
2086 for (partial_symtab *ps : require_partial_symbols (objfile, true))
2088 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2090 /* We don't call psymtab_to_symtab here because that may cause symtab
2091 expansion. When debugging a problem it helps if checkers leave
2092 things unchanged. */
2093 cust = ps->get_compunit_symtab ();
2095 /* First do some checks that don't require the associated symtab. */
2096 if (ps->text_high (objfile) < ps->text_low (objfile))
2098 printf_filtered ("Psymtab ");
2099 puts_filtered (ps->filename);
2100 printf_filtered (" covers bad range ");
2101 fputs_filtered (paddress (gdbarch, ps->text_low (objfile)),
2103 printf_filtered (" - ");
2104 fputs_filtered (paddress (gdbarch, ps->text_high (objfile)),
2106 printf_filtered ("\n");
2110 /* Now do checks requiring the associated symtab. */
2113 bv = COMPUNIT_BLOCKVECTOR (cust);
2114 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2115 partial_symbol **psym
2116 = &objfile->partial_symtabs->static_psymbols[ps->statics_offset];
2117 length = ps->n_static_syms;
2120 sym = block_lookup_symbol (b, (*psym)->ginfo.search_name (),
2121 symbol_name_match_type::SEARCH_NAME,
2125 printf_filtered ("Static symbol `");
2126 puts_filtered ((*psym)->ginfo.linkage_name ());
2127 printf_filtered ("' only found in ");
2128 puts_filtered (ps->filename);
2129 printf_filtered (" psymtab\n");
2133 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2134 psym = &objfile->partial_symtabs->global_psymbols[ps->globals_offset];
2135 length = ps->n_global_syms;
2138 sym = block_lookup_symbol (b, (*psym)->ginfo.search_name (),
2139 symbol_name_match_type::SEARCH_NAME,
2143 printf_filtered ("Global symbol `");
2144 puts_filtered ((*psym)->ginfo.linkage_name ());
2145 printf_filtered ("' only found in ");
2146 puts_filtered (ps->filename);
2147 printf_filtered (" psymtab\n");
2151 if (ps->raw_text_high () != 0
2152 && (ps->text_low (objfile) < BLOCK_START (b)
2153 || ps->text_high (objfile) > BLOCK_END (b)))
2155 printf_filtered ("Psymtab ");
2156 puts_filtered (ps->filename);
2157 printf_filtered (" covers ");
2158 fputs_filtered (paddress (gdbarch, ps->text_low (objfile)),
2160 printf_filtered (" - ");
2161 fputs_filtered (paddress (gdbarch, ps->text_high (objfile)),
2163 printf_filtered (" but symtab covers only ");
2164 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2165 printf_filtered (" - ");
2166 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2167 printf_filtered ("\n");
2172 void _initialize_psymtab ();
2174 _initialize_psymtab ()
2176 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2177 Print dump of current partial symbol definitions.\n\
2178 Usage: mt print psymbols [-objfile OBJFILE] [-pc ADDRESS] [--] [OUTFILE]\n\
2179 mt print psymbols [-objfile OBJFILE] [-source SOURCE] [--] [OUTFILE]\n\
2180 Entries in the partial symbol table are dumped to file OUTFILE,\n\
2181 or the terminal if OUTFILE is unspecified.\n\
2182 If ADDRESS is provided, dump only the file for that address.\n\
2183 If SOURCE is provided, dump only that file's symbols.\n\
2184 If OBJFILE is provided, dump only that file's minimal symbols."),
2185 &maintenanceprintlist);
2187 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2188 List the partial symbol tables for all object files.\n\
2189 This does not include information about individual partial symbols,\n\
2190 just the symbol table structures themselves."),
2191 &maintenanceinfolist);
2193 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2195 Check consistency of currently expanded psymtabs versus symtabs."),