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 void fixup_psymbol_section (struct partial_symbol *psym,
66 struct objfile *objfile);
68 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
69 struct partial_symtab *pst);
71 /* Ensure that the partial symbols for OBJFILE have been loaded. This
72 function always returns its argument, as a convenience. */
75 require_partial_symbols (struct objfile *objfile, int verbose)
77 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
79 objfile->flags |= OBJF_PSYMTABS_READ;
81 if (objfile->sf->sym_read_psymbols)
85 printf_unfiltered (_("Reading symbols from %s..."),
86 objfile_name (objfile));
87 gdb_flush (gdb_stdout);
89 (*objfile->sf->sym_read_psymbols) (objfile);
91 /* Partial symbols list are not expected to changed after this
93 objfile->global_psymbols.shrink_to_fit ();
94 objfile->static_psymbols.shrink_to_fit ();
98 if (!objfile_has_symbols (objfile))
101 printf_unfiltered (_("(no debugging symbols found)..."));
105 printf_unfiltered (_("done.\n"));
113 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
116 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
117 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
121 /* We want to make sure this file always requires psymtabs. */
123 #undef ALL_OBJFILE_PSYMTABS
125 /* Traverse all psymtabs in all objfiles. */
127 #define ALL_PSYMTABS(objfile, p) \
128 ALL_OBJFILES (objfile) \
129 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
131 /* Helper function for psym_map_symtabs_matching_filename that
132 expands the symtabs and calls the iterator. */
135 partial_map_expand_apply (struct objfile *objfile,
137 const char *real_path,
138 struct partial_symtab *pst,
139 gdb::function_view<bool (symtab *)> callback)
141 struct compunit_symtab *last_made = objfile->compunit_symtabs;
143 /* Shared psymtabs should never be seen here. Instead they should
144 be handled properly by the caller. */
145 gdb_assert (pst->user == NULL);
147 /* Don't visit already-expanded psymtabs. */
151 /* This may expand more than one symtab, and we want to iterate over
153 psymtab_to_symtab (objfile, pst);
155 return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs,
156 last_made, callback);
159 /* Psymtab version of map_symtabs_matching_filename. See its definition in
160 the definition of quick_symbol_functions in symfile.h. */
163 psym_map_symtabs_matching_filename
164 (struct objfile *objfile,
166 const char *real_path,
167 gdb::function_view<bool (symtab *)> callback)
169 struct partial_symtab *pst;
170 const char *name_basename = lbasename (name);
172 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
174 /* We can skip shared psymtabs here, because any file name will be
175 attached to the unshared psymtab. */
176 if (pst->user != NULL)
179 /* Anonymous psymtabs don't have a file name. */
183 if (compare_filenames_for_search (pst->filename, name))
185 if (partial_map_expand_apply (objfile, name, real_path,
191 /* Before we invoke realpath, which can get expensive when many
192 files are involved, do a quick comparison of the basenames. */
193 if (! basenames_may_differ
194 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
197 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
199 if (partial_map_expand_apply (objfile, name, real_path,
205 /* If the user gave us an absolute path, try to find the file in
206 this symtab and use its absolute path. */
207 if (real_path != NULL)
209 gdb_assert (IS_ABSOLUTE_PATH (real_path));
210 gdb_assert (IS_ABSOLUTE_PATH (name));
211 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
213 if (partial_map_expand_apply (objfile, name, real_path,
224 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
225 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
227 static struct partial_symtab *
228 find_pc_sect_psymtab_closer (struct objfile *objfile,
229 CORE_ADDR pc, struct obj_section *section,
230 struct partial_symtab *pst,
231 struct bound_minimal_symbol msymbol)
233 struct partial_symtab *tpst;
234 struct partial_symtab *best_pst = pst;
235 CORE_ADDR best_addr = pst->textlow;
237 gdb_assert (!pst->psymtabs_addrmap_supported);
239 /* An objfile that has its functions reordered might have
240 many partial symbol tables containing the PC, but
241 we want the partial symbol table that contains the
242 function containing the PC. */
243 if (!(objfile->flags & OBJF_REORDERED)
244 && section == NULL) /* Can't validate section this way. */
247 if (msymbol.minsym == NULL)
250 /* The code range of partial symtabs sometimes overlap, so, in
251 the loop below, we need to check all partial symtabs and
252 find the one that fits better for the given PC address. We
253 select the partial symtab that contains a symbol whose
254 address is closest to the PC address. By closest we mean
255 that find_pc_sect_symbol returns the symbol with address
256 that is closest and still less than the given PC. */
257 for (tpst = pst; tpst != NULL; tpst = tpst->next)
259 if (pc >= tpst->textlow && pc < tpst->texthigh)
261 struct partial_symbol *p;
264 /* NOTE: This assumes that every psymbol has a
265 corresponding msymbol, which is not necessarily
266 true; the debug info might be much richer than the
267 object's symbol table. */
268 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
270 && (p->address (objfile) == BMSYMBOL_VALUE_ADDRESS (msymbol)))
273 /* Also accept the textlow value of a psymtab as a
274 "symbol", to provide some support for partial
275 symbol tables with line information but no debug
276 symbols (e.g. those produced by an assembler). */
278 this_addr = p->address (objfile);
280 this_addr = tpst->textlow;
282 /* Check whether it is closer than our current
283 BEST_ADDR. Since this symbol address is
284 necessarily lower or equal to PC, the symbol closer
285 to PC is the symbol which address is the highest.
286 This way we return the psymtab which contains such
287 best match symbol. This can help in cases where the
288 symbol information/debuginfo is not complete, like
289 for instance on IRIX6 with gcc, where no debug info
290 is emitted for statics. (See also the nodebug.exp
292 if (this_addr > best_addr)
294 best_addr = this_addr;
302 /* Find which partial symtab contains PC and SECTION. Return NULL if
303 none. We return the psymtab that contains a symbol whose address
304 exactly matches PC, or, if we cannot find an exact match, the
305 psymtab that contains a symbol whose address is closest to PC. */
307 static struct partial_symtab *
308 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
309 struct obj_section *section,
310 struct bound_minimal_symbol msymbol)
312 struct partial_symtab *pst;
314 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
315 than the later used TEXTLOW/TEXTHIGH one. */
317 if (objfile->psymtabs_addrmap != NULL)
319 pst = ((struct partial_symtab *)
320 addrmap_find (objfile->psymtabs_addrmap, pc));
323 /* FIXME: addrmaps currently do not handle overlayed sections,
324 so fall back to the non-addrmap case if we're debugging
325 overlays and the addrmap returned the wrong section. */
326 if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
328 struct partial_symbol *p;
330 /* NOTE: This assumes that every psymbol has a
331 corresponding msymbol, which is not necessarily
332 true; the debug info might be much richer than the
333 object's symbol table. */
334 p = find_pc_sect_psymbol (objfile, pst, pc, section);
336 || (p->address (objfile)
337 != BMSYMBOL_VALUE_ADDRESS (msymbol)))
341 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
342 PSYMTABS_ADDRMAP we used has already the best 1-byte
343 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
344 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
353 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
354 which still have no corresponding full SYMTABs read. But it is not
355 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
358 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
359 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
360 debug info type in single OBJFILE. */
362 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
363 if (!pst->psymtabs_addrmap_supported
364 && pc >= pst->textlow && pc < pst->texthigh)
366 struct partial_symtab *best_pst;
368 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
370 if (best_pst != NULL)
377 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
378 the definition of quick_symbol_functions in symfile.h. */
380 static struct compunit_symtab *
381 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
382 struct bound_minimal_symbol msymbol,
384 struct obj_section *section,
387 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
391 if (warn_if_readin && ps->readin)
392 /* Might want to error() here (in case symtab is corrupt and
393 will cause a core dump), but maybe we can successfully
394 continue, so let's not. */
396 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
397 paddress (get_objfile_arch (objfile), pc));
398 psymtab_to_symtab (objfile, ps);
399 return ps->compunit_symtab;
404 /* Find which partial symbol within a psymtab matches PC and SECTION.
405 Return NULL if none. */
407 static struct partial_symbol *
408 find_pc_sect_psymbol (struct objfile *objfile,
409 struct partial_symtab *psymtab, CORE_ADDR pc,
410 struct obj_section *section)
412 struct partial_symbol *best = NULL;
415 gdb_assert (psymtab != NULL);
417 /* Cope with programs that start at address 0. */
418 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
420 /* Search the global symbols as well as the static symbols, so that
421 find_pc_partial_function doesn't use a minimal symbol and thus
422 cache a bad endaddr. */
423 for (int i = 0; i < psymtab->n_global_syms; i++)
425 partial_symbol *p = objfile->global_psymbols[psymtab->globals_offset + i];
427 if (p->domain == VAR_DOMAIN
428 && p->aclass == LOC_BLOCK
429 && pc >= p->address (objfile)
430 && (p->address (objfile) > best_pc
431 || (psymtab->textlow == 0
432 && best_pc == 0 && p->address (objfile) == 0)))
434 if (section != NULL) /* Match on a specific section. */
436 fixup_psymbol_section (p, objfile);
437 if (!matching_obj_sections (p->obj_section (objfile),
441 best_pc = p->address (objfile);
446 for (int i = 0; i < psymtab->n_static_syms; i++)
448 partial_symbol *p = objfile->static_psymbols[psymtab->statics_offset + i];
450 if (p->domain == VAR_DOMAIN
451 && p->aclass == LOC_BLOCK
452 && pc >= p->address (objfile)
453 && (p->address (objfile) > best_pc
454 || (psymtab->textlow == 0
455 && best_pc == 0 && p->address (objfile) == 0)))
457 if (section != NULL) /* Match on a specific section. */
459 fixup_psymbol_section (p, objfile);
460 if (!matching_obj_sections (p->obj_section (objfile),
464 best_pc = p->address (objfile);
473 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
480 if (psym->section >= 0)
483 gdb_assert (objfile);
485 switch (psym->aclass)
490 addr = psym->address (objfile);
493 /* Nothing else will be listed in the minsyms -- no use looking
498 fixup_section (psym, addr, objfile);
501 /* Psymtab version of lookup_symbol. See its definition in
502 the definition of quick_symbol_functions in symfile.h. */
504 static struct compunit_symtab *
505 psym_lookup_symbol (struct objfile *objfile,
506 int block_index, const char *name,
507 const domain_enum domain)
509 struct partial_symtab *ps;
510 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
511 struct compunit_symtab *stab_best = NULL;
513 lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
515 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
517 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
518 psymtab_index, domain))
520 struct symbol *sym, *with_opaque = NULL;
521 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
522 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
523 is empty, we can assume it won't here because lookup_partial_symbol
525 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
526 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
528 sym = block_find_symbol (block, name, domain,
529 block_find_non_opaque_type_preferred,
532 /* Some caution must be observed with overloaded functions
533 and methods, since the index will not contain any overload
534 information (but NAME might contain it). */
537 && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name))
539 if (with_opaque != NULL
540 && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name))
543 /* Keep looking through other psymtabs. */
550 /* Returns true if PSYM matches LOOKUP_NAME. */
553 psymbol_name_matches (partial_symbol *psym,
554 const lookup_name_info &lookup_name)
556 const language_defn *lang = language_def (psym->language);
557 symbol_name_matcher_ftype *name_match
558 = get_symbol_name_matcher (lang, lookup_name);
559 return name_match (symbol_search_name (psym), lookup_name, NULL);
562 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
563 the global block of PST if GLOBAL, and otherwise the static block.
564 MATCH is the comparison operation that returns true iff MATCH (s,
565 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
566 non-null, the symbols in the block are assumed to be ordered
567 according to it (allowing binary search). It must be compatible
568 with MATCH. Returns the symbol, if found, and otherwise NULL. */
570 static struct partial_symbol *
571 match_partial_symbol (struct objfile *objfile,
572 struct partial_symtab *pst, int global,
573 const char *name, domain_enum domain,
574 symbol_name_match_type match_type,
575 symbol_compare_ftype *ordered_compare)
577 struct partial_symbol **start, **psym;
578 struct partial_symbol **top, **real_top, **bottom, **center;
579 int length = (global ? pst->n_global_syms : pst->n_static_syms);
580 int do_linear_search = 1;
585 lookup_name_info lookup_name (name, match_type);
588 &objfile->global_psymbols[pst->globals_offset] :
589 &objfile->static_psymbols[pst->statics_offset]);
591 if (global && ordered_compare) /* Can use a binary search. */
593 do_linear_search = 0;
595 /* Binary search. This search is guaranteed to end with center
596 pointing at the earliest partial symbol whose name might be
597 correct. At that point *all* partial symbols with an
598 appropriate name will be checked against the correct
602 top = start + length - 1;
606 center = bottom + (top - bottom) / 2;
607 gdb_assert (center < top);
609 enum language lang = (*center)->language;
611 = lookup_name.language_lookup_name (lang).c_str ();
613 if (ordered_compare (symbol_search_name (*center), lang_ln) >= 0)
618 gdb_assert (top == bottom);
620 while (top <= real_top
621 && psymbol_name_matches (*top, lookup_name))
623 if (symbol_matches_domain ((*top)->language,
624 (*top)->domain, domain))
630 /* Can't use a binary search or else we found during the binary search that
631 we should also do a linear search. */
633 if (do_linear_search)
635 for (psym = start; psym < start + length; psym++)
637 if (symbol_matches_domain ((*psym)->language,
638 (*psym)->domain, domain)
639 && psymbol_name_matches (*psym, lookup_name))
647 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
648 not contain any method/function instance information (since this would
649 force reading type information while reading psymtabs). Therefore,
650 if NAME contains overload information, it must be stripped before searching
653 static gdb::unique_xmalloc_ptr<char>
654 psymtab_search_name (const char *name)
656 switch (current_language->la_language)
660 if (strchr (name, '('))
662 gdb::unique_xmalloc_ptr<char> ret = cp_remove_params (name);
674 return gdb::unique_xmalloc_ptr<char> (xstrdup (name));
677 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
678 Check the global symbols if GLOBAL, the static symbols if not. */
680 static struct partial_symbol *
681 lookup_partial_symbol (struct objfile *objfile,
682 struct partial_symtab *pst, const char *name,
683 int global, domain_enum domain)
685 struct partial_symbol **start, **psym;
686 struct partial_symbol **top, **real_top, **bottom, **center;
687 int length = (global ? pst->n_global_syms : pst->n_static_syms);
688 int do_linear_search = 1;
693 gdb::unique_xmalloc_ptr<char> search_name = psymtab_search_name (name);
695 lookup_name_info lookup_name (search_name.get (), symbol_name_match_type::FULL);
698 &objfile->global_psymbols[pst->globals_offset] :
699 &objfile->static_psymbols[pst->statics_offset]);
701 if (global) /* This means we can use a binary search. */
703 do_linear_search = 0;
705 /* Binary search. This search is guaranteed to end with center
706 pointing at the earliest partial symbol whose name might be
707 correct. At that point *all* partial symbols with an
708 appropriate name will be checked against the correct
712 top = start + length - 1;
716 center = bottom + (top - bottom) / 2;
718 internal_error (__FILE__, __LINE__,
719 _("failed internal consistency check"));
720 if (strcmp_iw_ordered (symbol_search_name (*center),
721 search_name.get ()) >= 0)
730 if (!(top == bottom))
731 internal_error (__FILE__, __LINE__,
732 _("failed internal consistency check"));
734 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
735 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
736 while (top >= start && symbol_matches_search_name (*top, lookup_name))
739 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
742 while (top <= real_top && symbol_matches_search_name (*top, lookup_name))
744 if (symbol_matches_domain ((*top)->language,
745 (*top)->domain, domain))
751 /* Can't use a binary search or else we found during the binary search that
752 we should also do a linear search. */
754 if (do_linear_search)
756 for (psym = start; psym < start + length; psym++)
758 if (symbol_matches_domain ((*psym)->language,
759 (*psym)->domain, domain)
760 && symbol_matches_search_name (*psym, lookup_name))
768 /* Get the symbol table that corresponds to a partial_symtab.
769 This is fast after the first time you do it.
770 The result will be NULL if the primary symtab has no symbols,
771 which can happen. Otherwise the result is the primary symtab
772 that contains PST. */
774 static struct compunit_symtab *
775 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
777 /* If it is a shared psymtab, find an unshared psymtab that includes
778 it. Any such psymtab will do. */
779 while (pst->user != NULL)
782 /* If it's been looked up before, return it. */
783 if (pst->compunit_symtab)
784 return pst->compunit_symtab;
786 /* If it has not yet been read in, read it. */
789 scoped_restore decrementer = increment_reading_symtab ();
791 (*pst->read_symtab) (pst, objfile);
794 return pst->compunit_symtab;
797 /* Psymtab version of relocate. See its definition in
798 the definition of quick_symbol_functions in symfile.h. */
801 psym_relocate (struct objfile *objfile,
802 const struct section_offsets *new_offsets,
803 const struct section_offsets *delta)
805 struct partial_symtab *p;
807 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
809 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
810 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
813 for (partial_symbol *psym : objfile->global_psymbols)
815 fixup_psymbol_section (psym, objfile);
816 if (psym->section >= 0)
817 psym->set_address (psym->unrelocated_address ()
818 + ANOFFSET (delta, psym->section));
820 for (partial_symbol *psym : objfile->static_psymbols)
822 fixup_psymbol_section (psym, objfile);
823 if (psym->section >= 0)
824 psym->set_address (psym->unrelocated_address ()
825 + ANOFFSET (delta, psym->section));
828 objfile->psymbol_map.clear ();
831 /* Psymtab version of find_last_source_symtab. See its definition in
832 the definition of quick_symbol_functions in symfile.h. */
834 static struct symtab *
835 psym_find_last_source_symtab (struct objfile *ofp)
837 struct partial_symtab *ps;
838 struct partial_symtab *cs_pst = NULL;
840 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
842 const char *name = ps->filename;
843 int len = strlen (name);
845 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
846 || strcmp (name, "<<C++-namespaces>>") == 0)))
854 internal_error (__FILE__, __LINE__,
855 _("select_source_symtab: "
856 "readin pst found and no symtabs."));
860 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
864 return compunit_primary_filetab (cust);
870 /* Psymtab version of forget_cached_source_info. See its definition in
871 the definition of quick_symbol_functions in symfile.h. */
874 psym_forget_cached_source_info (struct objfile *objfile)
876 struct partial_symtab *pst;
878 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
880 if (pst->fullname != NULL)
882 xfree (pst->fullname);
883 pst->fullname = NULL;
889 print_partial_symbols (struct gdbarch *gdbarch, struct objfile *objfile,
890 struct partial_symbol **p, int count, const char *what,
891 struct ui_file *outfile)
893 fprintf_filtered (outfile, " %s partial symbols:\n", what);
897 fprintf_filtered (outfile, " `%s'", (*p)->name);
898 if (symbol_demangled_name (*p) != NULL)
900 fprintf_filtered (outfile, " `%s'", symbol_demangled_name (*p));
902 fputs_filtered (", ", outfile);
903 switch ((*p)->domain)
906 fputs_filtered ("undefined domain, ", outfile);
909 /* This is the usual thing -- don't print it. */
912 fputs_filtered ("struct domain, ", outfile);
915 fputs_filtered ("label domain, ", outfile);
918 fputs_filtered ("<invalid domain>, ", outfile);
921 switch ((*p)->aclass)
924 fputs_filtered ("undefined", outfile);
927 fputs_filtered ("constant int", outfile);
930 fputs_filtered ("static", outfile);
933 fputs_filtered ("register", outfile);
936 fputs_filtered ("pass by value", outfile);
939 fputs_filtered ("pass by reference", outfile);
941 case LOC_REGPARM_ADDR:
942 fputs_filtered ("register address parameter", outfile);
945 fputs_filtered ("stack parameter", outfile);
948 fputs_filtered ("type", outfile);
951 fputs_filtered ("label", outfile);
954 fputs_filtered ("function", outfile);
956 case LOC_CONST_BYTES:
957 fputs_filtered ("constant bytes", outfile);
960 fputs_filtered ("unresolved", outfile);
962 case LOC_OPTIMIZED_OUT:
963 fputs_filtered ("optimized out", outfile);
966 fputs_filtered ("computed at runtime", outfile);
969 fputs_filtered ("<invalid location>", outfile);
972 fputs_filtered (", ", outfile);
973 fputs_filtered (paddress (gdbarch, (*p)->unrelocated_address ()), outfile);
974 fprintf_filtered (outfile, "\n");
980 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
981 struct ui_file *outfile)
983 struct gdbarch *gdbarch = get_objfile_arch (objfile);
986 if (psymtab->anonymous)
988 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
993 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
996 fprintf_filtered (outfile, "(object ");
997 gdb_print_host_address (psymtab, outfile);
998 fprintf_filtered (outfile, ")\n\n");
999 fprintf_unfiltered (outfile, " Read from object file %s (",
1000 objfile_name (objfile));
1001 gdb_print_host_address (objfile, outfile);
1002 fprintf_unfiltered (outfile, ")\n");
1004 if (psymtab->readin)
1006 fprintf_filtered (outfile,
1007 " Full symtab was read (at ");
1008 gdb_print_host_address (psymtab->compunit_symtab, outfile);
1009 fprintf_filtered (outfile, " by function at ");
1010 gdb_print_host_address (psymtab->read_symtab, outfile);
1011 fprintf_filtered (outfile, ")\n");
1014 fprintf_filtered (outfile, " Symbols cover text addresses ");
1015 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
1016 fprintf_filtered (outfile, "-");
1017 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
1018 fprintf_filtered (outfile, "\n");
1019 fprintf_filtered (outfile, " Address map supported - %s.\n",
1020 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
1021 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
1022 psymtab->number_of_dependencies);
1023 for (i = 0; i < psymtab->number_of_dependencies; i++)
1025 fprintf_filtered (outfile, " %d ", i);
1026 gdb_print_host_address (psymtab->dependencies[i], outfile);
1027 fprintf_filtered (outfile, " %s\n",
1028 psymtab->dependencies[i]->filename);
1030 if (psymtab->user != NULL)
1032 fprintf_filtered (outfile, " Shared partial symtab with user ");
1033 gdb_print_host_address (psymtab->user, outfile);
1034 fprintf_filtered (outfile, "\n");
1036 if (psymtab->n_global_syms > 0)
1038 print_partial_symbols (gdbarch, objfile,
1039 &objfile->global_psymbols[psymtab->globals_offset],
1040 psymtab->n_global_syms, "Global", outfile);
1042 if (psymtab->n_static_syms > 0)
1044 print_partial_symbols (gdbarch, objfile,
1045 &objfile->static_psymbols[psymtab->statics_offset],
1046 psymtab->n_static_syms, "Static", outfile);
1048 fprintf_filtered (outfile, "\n");
1051 /* Psymtab version of print_stats. See its definition in
1052 the definition of quick_symbol_functions in symfile.h. */
1055 psym_print_stats (struct objfile *objfile)
1058 struct partial_symtab *ps;
1061 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1063 if (ps->readin == 0)
1066 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1069 /* Psymtab version of dump. See its definition in
1070 the definition of quick_symbol_functions in symfile.h. */
1073 psym_dump (struct objfile *objfile)
1075 struct partial_symtab *psymtab;
1077 if (objfile->psymtabs)
1079 printf_filtered ("Psymtabs:\n");
1080 for (psymtab = objfile->psymtabs;
1082 psymtab = psymtab->next)
1084 printf_filtered ("%s at ",
1086 gdb_print_host_address (psymtab, gdb_stdout);
1087 printf_filtered (", ");
1090 printf_filtered ("\n\n");
1094 /* Psymtab version of expand_symtabs_for_function. See its definition in
1095 the definition of quick_symbol_functions in symfile.h. */
1098 psym_expand_symtabs_for_function (struct objfile *objfile,
1099 const char *func_name)
1101 struct partial_symtab *ps;
1103 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1108 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1110 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1112 psymtab_to_symtab (objfile, ps);
1116 /* Psymtab version of expand_all_symtabs. See its definition in
1117 the definition of quick_symbol_functions in symfile.h. */
1120 psym_expand_all_symtabs (struct objfile *objfile)
1122 struct partial_symtab *psymtab;
1124 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1126 psymtab_to_symtab (objfile, psymtab);
1130 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1131 the definition of quick_symbol_functions in symfile.h. */
1134 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1135 const char *fullname)
1137 struct partial_symtab *p;
1139 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1141 /* Anonymous psymtabs don't have a name of a source file. */
1145 /* psymtab_to_fullname tries to open the file which is slow.
1146 Don't call it if we know the basenames don't match. */
1147 if ((basenames_may_differ
1148 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1149 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1150 psymtab_to_symtab (objfile, p);
1154 /* Psymtab version of map_symbol_filenames. See its definition in
1155 the definition of quick_symbol_functions in symfile.h. */
1158 psym_map_symbol_filenames (struct objfile *objfile,
1159 symbol_filename_ftype *fun, void *data,
1162 struct partial_symtab *ps;
1164 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1166 const char *fullname;
1171 /* We can skip shared psymtabs here, because any file name will be
1172 attached to the unshared psymtab. */
1173 if (ps->user != NULL)
1176 /* Anonymous psymtabs don't have a file name. */
1182 fullname = psymtab_to_fullname (ps);
1185 (*fun) (ps->filename, fullname, data);
1189 /* Finds the fullname that a partial_symtab represents.
1191 If this functions finds the fullname, it will save it in ps->fullname
1192 and it will also return the value.
1194 If this function fails to find the file that this partial_symtab represents,
1195 NULL will be returned and ps->fullname will be set to NULL. */
1198 psymtab_to_fullname (struct partial_symtab *ps)
1200 gdb_assert (!ps->anonymous);
1202 /* Use cached copy if we have it.
1203 We rely on forget_cached_source_info being called appropriately
1204 to handle cases like the file being moved. */
1205 if (ps->fullname == NULL)
1207 gdb::unique_xmalloc_ptr<char> fullname;
1208 int fd = find_and_open_source (ps->filename, ps->dirname, &fullname);
1209 ps->fullname = fullname.release ();
1215 /* rewrite_source_path would be applied by find_and_open_source, we
1216 should report the pathname where GDB tried to find the file. */
1218 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1219 fullname.reset (xstrdup (ps->filename));
1221 fullname.reset (concat (ps->dirname, SLASH_STRING,
1222 ps->filename, (char *) NULL));
1224 ps->fullname = rewrite_source_path (fullname.get ()).release ();
1225 if (ps->fullname == NULL)
1226 ps->fullname = fullname.release ();
1230 return ps->fullname;
1233 /* For all symbols, s, in BLOCK that are in DOMAIN and match NAME
1234 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1235 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1236 ever returns non-zero, and otherwise returns 0. */
1239 map_block (const char *name, domain_enum domain, struct objfile *objfile,
1240 struct block *block,
1241 int (*callback) (struct block *, struct symbol *, void *),
1242 void *data, symbol_name_match_type match)
1244 struct block_iterator iter;
1247 lookup_name_info lookup_name (name, match);
1249 for (sym = block_iter_match_first (block, lookup_name, &iter);
1251 sym = block_iter_match_next (lookup_name, &iter))
1253 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1254 SYMBOL_DOMAIN (sym), domain))
1256 if (callback (block, sym, data))
1264 /* Psymtab version of map_matching_symbols. See its definition in
1265 the definition of quick_symbol_functions in symfile.h. */
1268 psym_map_matching_symbols (struct objfile *objfile,
1269 const char *name, domain_enum domain,
1271 int (*callback) (struct block *,
1272 struct symbol *, void *),
1274 symbol_name_match_type match,
1275 symbol_compare_ftype *ordered_compare)
1277 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1278 struct partial_symtab *ps;
1280 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1284 || match_partial_symbol (objfile, ps, global, name, domain, match,
1287 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1288 struct block *block;
1292 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1293 if (map_block (name, domain, objfile, block,
1294 callback, data, match))
1296 if (callback (block, NULL, data))
1302 /* A helper for psym_expand_symtabs_matching that handles searching
1303 included psymtabs. This returns true if a symbol is found, and
1304 false otherwise. It also updates the 'searched_flag' on the
1305 various psymtabs that it searches. */
1308 recursively_search_psymtabs
1309 (struct partial_symtab *ps, struct objfile *objfile, enum search_domain domain,
1310 const lookup_name_info &lookup_name,
1311 gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
1314 enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
1317 if (ps->searched_flag != PST_NOT_SEARCHED)
1318 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1320 /* Recurse into shared psymtabs first, because they may have already
1321 been searched, and this could save some time. */
1322 for (i = 0; i < ps->number_of_dependencies; ++i)
1326 /* Skip non-shared dependencies, these are handled elsewhere. */
1327 if (ps->dependencies[i]->user == NULL)
1330 r = recursively_search_psymtabs (ps->dependencies[i],
1331 objfile, domain, lookup_name,
1335 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1340 partial_symbol **gbound
1341 = objfile->global_psymbols.data () + ps->globals_offset + ps->n_global_syms;
1342 partial_symbol **sbound
1343 = objfile->static_psymbols.data () + ps->statics_offset + ps->n_static_syms;
1344 partial_symbol **bound = gbound;
1346 /* Go through all of the symbols stored in a partial
1347 symtab in one loop. */
1348 partial_symbol **psym = objfile->global_psymbols.data () + ps->globals_offset;
1353 if (bound == gbound && ps->n_static_syms != 0)
1355 psym = objfile->static_psymbols.data () + ps->statics_offset;
1366 if ((domain == ALL_DOMAIN
1367 || (domain == VARIABLES_DOMAIN
1368 && (*psym)->aclass != LOC_TYPEDEF
1369 && (*psym)->aclass != LOC_BLOCK)
1370 || (domain == FUNCTIONS_DOMAIN
1371 && (*psym)->aclass == LOC_BLOCK)
1372 || (domain == TYPES_DOMAIN
1373 && (*psym)->aclass == LOC_TYPEDEF))
1374 && psymbol_name_matches (*psym, lookup_name)
1375 && (sym_matcher == NULL || sym_matcher (symbol_search_name (*psym))))
1377 /* Found a match, so notify our caller. */
1378 result = PST_SEARCHED_AND_FOUND;
1385 ps->searched_flag = result;
1386 return result == PST_SEARCHED_AND_FOUND;
1389 /* Psymtab version of expand_symtabs_matching. See its definition in
1390 the definition of quick_symbol_functions in symfile.h. */
1393 psym_expand_symtabs_matching
1394 (struct objfile *objfile,
1395 gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
1396 const lookup_name_info &lookup_name_in,
1397 gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
1398 gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
1399 enum search_domain domain)
1401 struct partial_symtab *ps;
1403 lookup_name_info lookup_name = lookup_name_in.make_ignore_params ();
1405 /* Clear the search flags. */
1406 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1408 ps->searched_flag = PST_NOT_SEARCHED;
1411 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1418 /* We skip shared psymtabs because file-matching doesn't apply
1419 to them; but we search them later in the loop. */
1420 if (ps->user != NULL)
1430 match = file_matcher (ps->filename, false);
1433 /* Before we invoke realpath, which can get expensive when many
1434 files are involved, do a quick comparison of the basenames. */
1435 if (basenames_may_differ
1436 || file_matcher (lbasename (ps->filename), true))
1437 match = file_matcher (psymtab_to_fullname (ps), false);
1443 if (recursively_search_psymtabs (ps, objfile, domain,
1444 lookup_name, symbol_matcher))
1446 struct compunit_symtab *symtab =
1447 psymtab_to_symtab (objfile, ps);
1449 if (expansion_notify != NULL)
1450 expansion_notify (symtab);
1455 /* Psymtab version of has_symbols. See its definition in
1456 the definition of quick_symbol_functions in symfile.h. */
1459 psym_has_symbols (struct objfile *objfile)
1461 return objfile->psymtabs != NULL;
1464 /* Helper function for psym_find_compunit_symtab_by_address that fills
1465 in psymbol_map for a given range of psymbols. */
1468 psym_fill_psymbol_map (struct objfile *objfile,
1469 struct partial_symtab *psymtab,
1470 std::set<CORE_ADDR> *seen_addrs,
1471 const std::vector<partial_symbol *> &symbols,
1475 for (int i = 0; i < length; ++i)
1477 struct partial_symbol *psym = symbols[start + i];
1479 if (psym->aclass == LOC_STATIC)
1481 CORE_ADDR addr = psym->address (objfile);
1482 if (seen_addrs->find (addr) == seen_addrs->end ())
1484 seen_addrs->insert (addr);
1485 objfile->psymbol_map.emplace_back (addr, psymtab);
1491 /* See find_compunit_symtab_by_address in quick_symbol_functions, in
1494 static compunit_symtab *
1495 psym_find_compunit_symtab_by_address (struct objfile *objfile,
1498 if (objfile->psymbol_map.empty ())
1500 struct partial_symtab *pst;
1502 std::set<CORE_ADDR> seen_addrs;
1504 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
1506 psym_fill_psymbol_map (objfile, pst,
1508 objfile->global_psymbols,
1509 pst->globals_offset,
1510 pst->n_global_syms);
1511 psym_fill_psymbol_map (objfile, pst,
1513 objfile->static_psymbols,
1514 pst->statics_offset,
1515 pst->n_static_syms);
1518 objfile->psymbol_map.shrink_to_fit ();
1520 std::sort (objfile->psymbol_map.begin (), objfile->psymbol_map.end (),
1521 [] (const std::pair<CORE_ADDR, partial_symtab *> &a,
1522 const std::pair<CORE_ADDR, partial_symtab *> &b)
1524 return a.first < b.first;
1528 auto iter = std::lower_bound
1529 (objfile->psymbol_map.begin (), objfile->psymbol_map.end (), address,
1530 [] (const std::pair<CORE_ADDR, partial_symtab *> &a,
1536 if (iter == objfile->psymbol_map.end () || iter->first != address)
1539 return psymtab_to_symtab (objfile, iter->second);
1542 const struct quick_symbol_functions psym_functions =
1545 psym_find_last_source_symtab,
1546 psym_forget_cached_source_info,
1547 psym_map_symtabs_matching_filename,
1552 psym_expand_symtabs_for_function,
1553 psym_expand_all_symtabs,
1554 psym_expand_symtabs_with_fullname,
1555 psym_map_matching_symbols,
1556 psym_expand_symtabs_matching,
1557 psym_find_pc_sect_compunit_symtab,
1558 psym_find_compunit_symtab_by_address,
1559 psym_map_symbol_filenames
1565 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1567 /* Sort the global list; don't sort the static list. */
1568 auto begin = objfile->global_psymbols.begin ();
1569 std::advance (begin, pst->globals_offset);
1571 /* The psymbols for this partial_symtab are currently at the end of the
1573 auto end = objfile->global_psymbols.end ();
1575 std::sort (begin, end, [] (partial_symbol *s1, partial_symbol *s2)
1577 return strcmp_iw_ordered (symbol_search_name (s1),
1578 symbol_search_name (s2)) < 0;
1582 /* Allocate and partially fill a partial symtab. It will be
1583 completely filled at the end of the symbol list.
1585 FILENAME is the name of the symbol-file we are reading from. */
1587 struct partial_symtab *
1588 start_psymtab_common (struct objfile *objfile,
1589 const char *filename,
1591 std::vector<partial_symbol *> &global_psymbols,
1592 std::vector<partial_symbol *> &static_psymbols)
1594 struct partial_symtab *psymtab;
1596 psymtab = allocate_psymtab (filename, objfile);
1597 psymtab->textlow = textlow;
1598 psymtab->texthigh = psymtab->textlow; /* default */
1599 psymtab->globals_offset = global_psymbols.size ();
1600 psymtab->statics_offset = static_psymbols.size ();
1604 /* Perform "finishing up" operations of a partial symtab. */
1607 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
1609 pst->n_global_syms = objfile->global_psymbols.size () - pst->globals_offset;
1610 pst->n_static_syms = objfile->static_psymbols.size () - pst->statics_offset;
1612 sort_pst_symbols (objfile, pst);
1615 /* Calculate a hash code for the given partial symbol. The hash is
1616 calculated using the symbol's value, language, domain, class
1617 and name. These are the values which are set by
1618 add_psymbol_to_bcache. */
1620 static unsigned long
1621 psymbol_hash (const void *addr, int length)
1623 unsigned long h = 0;
1624 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1625 unsigned int lang = psymbol->language;
1626 unsigned int domain = psymbol->domain;
1627 unsigned int theclass = psymbol->aclass;
1629 h = hash_continue (&psymbol->value, sizeof (psymbol->value), h);
1630 h = hash_continue (&lang, sizeof (unsigned int), h);
1631 h = hash_continue (&domain, sizeof (unsigned int), h);
1632 h = hash_continue (&theclass, sizeof (unsigned int), h);
1633 /* Note that psymbol names are interned via symbol_set_names, so
1634 there's no need to hash the contents of the name here. */
1635 h = hash_continue (&psymbol->name,
1636 sizeof (psymbol->name), h);
1641 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1642 For the comparison this function uses a symbols value,
1643 language, domain, class and name. */
1646 psymbol_compare (const void *addr1, const void *addr2, int length)
1648 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1649 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1651 return (memcmp (&sym1->value, &sym2->value,
1652 sizeof (sym1->value)) == 0
1653 && sym1->language == sym2->language
1654 && sym1->domain == sym2->domain
1655 && sym1->aclass == sym2->aclass
1656 /* Note that psymbol names are interned via
1657 symbol_set_names, so there's no need to compare the
1658 contents of the name here. */
1659 && sym1->name == sym2->name);
1662 /* Initialize a partial symbol bcache. */
1664 struct psymbol_bcache *
1665 psymbol_bcache_init (void)
1667 struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
1669 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1673 /* Free a partial symbol bcache. */
1676 psymbol_bcache_free (struct psymbol_bcache *bcache)
1681 bcache_xfree (bcache->bcache);
1685 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1688 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1690 return bcache->bcache;
1693 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1694 symbol before, add a copy to BCACHE. In either case, return a pointer
1695 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1696 1 in case of new entry or 0 if returning an old entry. */
1698 static struct partial_symbol *
1699 psymbol_bcache_full (struct partial_symbol *sym,
1700 struct psymbol_bcache *bcache,
1703 return ((struct partial_symbol *)
1704 bcache_full (sym, sizeof (struct partial_symbol), bcache->bcache,
1708 /* Helper function, initialises partial symbol structure and stashes
1709 it into objfile's bcache. Note that our caching mechanism will
1710 use all fields of struct partial_symbol to determine hash value of the
1711 structure. In other words, having two symbols with the same name but
1712 different domain (or address) is possible and correct. */
1714 static struct partial_symbol *
1715 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1717 enum address_class theclass,
1719 enum language language, struct objfile *objfile,
1722 struct partial_symbol psymbol;
1724 psymbol.set_address (coreaddr);
1725 psymbol.section = -1;
1726 psymbol.domain = domain;
1727 psymbol.aclass = theclass;
1729 memset (&psymbol.language_specific, 0, sizeof (psymbol.language_specific));
1730 psymbol.ada_mangled = 0;
1731 symbol_set_language (&psymbol, language, &objfile->objfile_obstack);
1732 symbol_set_names (&psymbol, name, namelength, copy_name, objfile);
1734 /* Stash the partial symbol away in the cache. */
1735 return psymbol_bcache_full (&psymbol, objfile->psymbol_cache, added);
1738 /* Helper function, adds partial symbol to the given partial symbol list. */
1741 append_psymbol_to_list (std::vector<partial_symbol *> *list,
1742 struct partial_symbol *psym,
1743 struct objfile *objfile)
1745 list->push_back (psym);
1746 OBJSTAT (objfile, n_psyms++);
1749 /* Add a symbol with a long value to a psymtab.
1750 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1751 The only value we need to store for psyms is an address.
1752 For all other psyms pass zero for COREADDR.
1753 Return the partial symbol that has been added. */
1756 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1758 enum address_class theclass,
1759 std::vector<partial_symbol *> *list,
1761 enum language language, struct objfile *objfile)
1763 struct partial_symbol *psym;
1767 /* Stash the partial symbol away in the cache. */
1768 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, theclass,
1769 coreaddr, language, objfile, &added);
1771 /* Do not duplicate global partial symbols. */
1772 if (list == &objfile->global_psymbols
1776 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1777 append_psymbol_to_list (list, psym, objfile);
1780 /* Initialize storage for partial symbols. */
1783 init_psymbol_list (struct objfile *objfile, int total_symbols)
1785 /* Free any previously allocated psymbol lists. */
1786 objfile->global_psymbols.clear ();
1787 objfile->static_psymbols.clear ();
1789 /* Current best guess is that approximately a twentieth
1790 of the total symbols (in a debugging file) are global or static
1791 oriented symbols, then multiply that by slop factor of two. */
1792 objfile->global_psymbols.reserve (total_symbols / 10);
1793 objfile->static_psymbols.reserve (total_symbols / 10);
1796 struct partial_symtab *
1797 allocate_psymtab (const char *filename, struct objfile *objfile)
1799 struct partial_symtab *psymtab;
1801 if (objfile->free_psymtabs)
1803 psymtab = objfile->free_psymtabs;
1804 objfile->free_psymtabs = psymtab->next;
1807 psymtab = XOBNEW (&objfile->objfile_obstack, partial_symtab);
1809 memset (psymtab, 0, sizeof (struct partial_symtab));
1811 = (const char *) bcache (filename, strlen (filename) + 1,
1812 objfile->per_bfd->filename_cache);
1813 psymtab->compunit_symtab = NULL;
1815 /* Prepend it to the psymtab list for the objfile it belongs to.
1816 Psymtabs are searched in most recent inserted -> least recent
1819 psymtab->next = objfile->psymtabs;
1820 objfile->psymtabs = psymtab;
1822 if (symtab_create_debug)
1824 /* Be a bit clever with debugging messages, and don't print objfile
1825 every time, only when it changes. */
1826 static char *last_objfile_name = NULL;
1828 if (last_objfile_name == NULL
1829 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1831 xfree (last_objfile_name);
1832 last_objfile_name = xstrdup (objfile_name (objfile));
1833 fprintf_unfiltered (gdb_stdlog,
1834 "Creating one or more psymtabs for objfile %s ...\n",
1837 fprintf_unfiltered (gdb_stdlog,
1838 "Created psymtab %s for module %s.\n",
1839 host_address_to_string (psymtab), filename);
1846 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1848 struct partial_symtab **prev_pst;
1851 Empty psymtabs happen as a result of header files which don't
1852 have any symbols in them. There can be a lot of them. But this
1853 check is wrong, in that a psymtab with N_SLINE entries but
1854 nothing else is not empty, but we don't realize that. Fixing
1855 that without slowing things down might be tricky. */
1857 /* First, snip it out of the psymtab chain. */
1859 prev_pst = &(objfile->psymtabs);
1860 while ((*prev_pst) != pst)
1861 prev_pst = &((*prev_pst)->next);
1862 (*prev_pst) = pst->next;
1864 /* Next, put it on a free list for recycling. */
1866 pst->next = objfile->free_psymtabs;
1867 objfile->free_psymtabs = pst;
1872 /* We need to pass a couple of items to the addrmap_foreach function,
1875 struct dump_psymtab_addrmap_data
1877 struct objfile *objfile;
1878 struct partial_symtab *psymtab;
1879 struct ui_file *outfile;
1881 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1882 If so, we want to print the next one as well (since the next addrmap
1883 entry defines the end of the range). */
1884 int previous_matched;
1887 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1890 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
1892 struct dump_psymtab_addrmap_data *data
1893 = (struct dump_psymtab_addrmap_data *) datap;
1894 struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
1895 struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
1896 const char *psymtab_address_or_end = NULL;
1900 if (data->psymtab == NULL
1901 || data->psymtab == addrmap_psymtab)
1902 psymtab_address_or_end = host_address_to_string (addrmap_psymtab);
1903 else if (data->previous_matched)
1904 psymtab_address_or_end = "<ends here>";
1906 if (data->psymtab == NULL
1907 || data->psymtab == addrmap_psymtab
1908 || data->previous_matched)
1910 fprintf_filtered (data->outfile, " %s%s %s\n",
1911 data->psymtab != NULL ? " " : "",
1912 paddress (gdbarch, start_addr),
1913 psymtab_address_or_end);
1916 data->previous_matched = (data->psymtab == NULL
1917 || data->psymtab == addrmap_psymtab);
1922 /* Helper function for maintenance_print_psymbols to print the addrmap
1923 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1926 dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
1927 struct ui_file *outfile)
1929 struct dump_psymtab_addrmap_data addrmap_dump_data;
1931 if ((psymtab == NULL
1932 || psymtab->psymtabs_addrmap_supported)
1933 && objfile->psymtabs_addrmap != NULL)
1935 addrmap_dump_data.objfile = objfile;
1936 addrmap_dump_data.psymtab = psymtab;
1937 addrmap_dump_data.outfile = outfile;
1938 addrmap_dump_data.previous_matched = 0;
1939 fprintf_filtered (outfile, "%sddress map:\n",
1940 psymtab == NULL ? "Entire a" : " A");
1941 addrmap_foreach (objfile->psymtabs_addrmap, dump_psymtab_addrmap_1,
1942 &addrmap_dump_data);
1947 maintenance_print_psymbols (const char *args, int from_tty)
1949 struct ui_file *outfile = gdb_stdout;
1950 char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
1951 struct objfile *objfile;
1952 struct partial_symtab *ps;
1953 int i, outfile_idx, found;
1955 struct obj_section *section = NULL;
1959 gdb_argv argv (args);
1961 for (i = 0; argv != NULL && argv[i] != NULL; ++i)
1963 if (strcmp (argv[i], "-pc") == 0)
1965 if (argv[i + 1] == NULL)
1966 error (_("Missing pc value"));
1967 address_arg = argv[++i];
1969 else if (strcmp (argv[i], "-source") == 0)
1971 if (argv[i + 1] == NULL)
1972 error (_("Missing source file"));
1973 source_arg = argv[++i];
1975 else if (strcmp (argv[i], "-objfile") == 0)
1977 if (argv[i + 1] == NULL)
1978 error (_("Missing objfile name"));
1979 objfile_arg = argv[++i];
1981 else if (strcmp (argv[i], "--") == 0)
1983 /* End of options. */
1987 else if (argv[i][0] == '-')
1989 /* Future proofing: Don't allow OUTFILE to begin with "-". */
1990 error (_("Unknown option: %s"), argv[i]);
1997 if (address_arg != NULL && source_arg != NULL)
1998 error (_("Must specify at most one of -pc and -source"));
2000 stdio_file arg_outfile;
2002 if (argv != NULL && argv[outfile_idx] != NULL)
2004 if (argv[outfile_idx + 1] != NULL)
2005 error (_("Junk at end of command"));
2006 gdb::unique_xmalloc_ptr<char> outfile_name
2007 (tilde_expand (argv[outfile_idx]));
2008 if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
2009 perror_with_name (outfile_name.get ());
2010 outfile = &arg_outfile;
2013 if (address_arg != NULL)
2015 pc = parse_and_eval_address (address_arg);
2016 /* If we fail to find a section, that's ok, try the lookup anyway. */
2017 section = find_pc_section (pc);
2021 ALL_OBJFILES (objfile)
2023 int printed_objfile_header = 0;
2024 int print_for_objfile = 1;
2027 if (objfile_arg != NULL)
2029 = compare_filenames_for_search (objfile_name (objfile),
2031 if (!print_for_objfile)
2034 if (address_arg != NULL)
2036 struct bound_minimal_symbol msymbol = { NULL, NULL };
2038 /* We don't assume each pc has a unique objfile (this is for
2040 ps = find_pc_sect_psymtab (objfile, pc, section, msymbol);
2043 if (!printed_objfile_header)
2045 outfile->printf ("\nPartial symtabs for objfile %s\n",
2046 objfile_name (objfile));
2047 printed_objfile_header = 1;
2049 dump_psymtab (objfile, ps, outfile);
2050 dump_psymtab_addrmap (objfile, ps, outfile);
2056 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
2058 int print_for_source = 0;
2061 if (source_arg != NULL)
2064 = compare_filenames_for_search (ps->filename, source_arg);
2067 if (source_arg == NULL
2068 || print_for_source)
2070 if (!printed_objfile_header)
2072 outfile->printf ("\nPartial symtabs for objfile %s\n",
2073 objfile_name (objfile));
2074 printed_objfile_header = 1;
2076 dump_psymtab (objfile, ps, outfile);
2077 dump_psymtab_addrmap (objfile, ps, outfile);
2082 /* If we're printing all the objfile's symbols dump the full addrmap. */
2084 if (address_arg == NULL
2085 && source_arg == NULL
2086 && objfile->psymtabs_addrmap != NULL)
2088 outfile->puts ("\n");
2089 dump_psymtab_addrmap (objfile, NULL, outfile);
2095 if (address_arg != NULL)
2096 error (_("No partial symtab for address: %s"), address_arg);
2097 if (source_arg != NULL)
2098 error (_("No partial symtab for source file: %s"), source_arg);
2102 /* List all the partial symbol tables whose names match REGEXP (optional). */
2105 maintenance_info_psymtabs (const char *regexp, int from_tty)
2107 struct program_space *pspace;
2108 struct objfile *objfile;
2113 ALL_PSPACES (pspace)
2114 ALL_PSPACE_OBJFILES (pspace, objfile)
2116 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2117 struct partial_symtab *psymtab;
2119 /* We don't want to print anything for this objfile until we
2120 actually find a symtab whose name matches. */
2121 int printed_objfile_start = 0;
2123 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
2128 || re_exec (psymtab->filename))
2130 if (! printed_objfile_start)
2132 printf_filtered ("{ objfile %s ", objfile_name (objfile));
2134 printf_filtered ("((struct objfile *) %s)\n",
2135 host_address_to_string (objfile));
2136 printed_objfile_start = 1;
2139 printf_filtered (" { psymtab %s ", psymtab->filename);
2141 printf_filtered ("((struct partial_symtab *) %s)\n",
2142 host_address_to_string (psymtab));
2144 printf_filtered (" readin %s\n",
2145 psymtab->readin ? "yes" : "no");
2146 printf_filtered (" fullname %s\n",
2148 ? psymtab->fullname : "(null)");
2149 printf_filtered (" text addresses ");
2150 fputs_filtered (paddress (gdbarch, psymtab->textlow),
2152 printf_filtered (" -- ");
2153 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
2155 printf_filtered ("\n");
2156 printf_filtered (" psymtabs_addrmap_supported %s\n",
2157 (psymtab->psymtabs_addrmap_supported
2159 printf_filtered (" globals ");
2160 if (psymtab->n_global_syms)
2162 auto p = &objfile->global_psymbols[psymtab->globals_offset];
2164 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2165 host_address_to_string (p),
2166 psymtab->n_global_syms);
2169 printf_filtered ("(none)\n");
2170 printf_filtered (" statics ");
2171 if (psymtab->n_static_syms)
2173 auto p = &objfile->static_psymbols[psymtab->statics_offset];
2175 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2176 host_address_to_string (p),
2177 psymtab->n_static_syms);
2180 printf_filtered ("(none)\n");
2181 printf_filtered (" dependencies ");
2182 if (psymtab->number_of_dependencies)
2186 printf_filtered ("{\n");
2187 for (i = 0; i < psymtab->number_of_dependencies; i++)
2189 struct partial_symtab *dep = psymtab->dependencies[i];
2191 /* Note the string concatenation there --- no comma. */
2192 printf_filtered (" psymtab %s "
2193 "((struct partial_symtab *) %s)\n",
2195 host_address_to_string (dep));
2197 printf_filtered (" }\n");
2200 printf_filtered ("(none)\n");
2201 printf_filtered (" }\n");
2205 if (printed_objfile_start)
2206 printf_filtered ("}\n");
2210 /* Check consistency of currently expanded psymtabs vs symtabs. */
2213 maintenance_check_psymtabs (const char *ignore, int from_tty)
2216 struct compunit_symtab *cust = NULL;
2217 struct partial_symtab *ps;
2218 const struct blockvector *bv;
2219 struct objfile *objfile;
2223 ALL_PSYMTABS (objfile, ps)
2225 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2227 /* We don't call psymtab_to_symtab here because that may cause symtab
2228 expansion. When debugging a problem it helps if checkers leave
2229 things unchanged. */
2230 cust = ps->compunit_symtab;
2232 /* First do some checks that don't require the associated symtab. */
2233 if (ps->texthigh < ps->textlow)
2235 printf_filtered ("Psymtab ");
2236 puts_filtered (ps->filename);
2237 printf_filtered (" covers bad range ");
2238 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2239 printf_filtered (" - ");
2240 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2241 printf_filtered ("\n");
2245 /* Now do checks requiring the associated symtab. */
2248 bv = COMPUNIT_BLOCKVECTOR (cust);
2249 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2250 partial_symbol **psym = &objfile->static_psymbols[ps->statics_offset];
2251 length = ps->n_static_syms;
2254 sym = block_lookup_symbol (b, symbol_search_name (*psym),
2255 symbol_name_match_type::SEARCH_NAME,
2259 printf_filtered ("Static symbol `");
2260 puts_filtered ((*psym)->name);
2261 printf_filtered ("' only found in ");
2262 puts_filtered (ps->filename);
2263 printf_filtered (" psymtab\n");
2267 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2268 psym = &objfile->global_psymbols[ps->globals_offset];
2269 length = ps->n_global_syms;
2272 sym = block_lookup_symbol (b, symbol_search_name (*psym),
2273 symbol_name_match_type::SEARCH_NAME,
2277 printf_filtered ("Global symbol `");
2278 puts_filtered ((*psym)->name);
2279 printf_filtered ("' only found in ");
2280 puts_filtered (ps->filename);
2281 printf_filtered (" psymtab\n");
2285 if (ps->texthigh != 0
2286 && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)))
2288 printf_filtered ("Psymtab ");
2289 puts_filtered (ps->filename);
2290 printf_filtered (" covers ");
2291 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2292 printf_filtered (" - ");
2293 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2294 printf_filtered (" but symtab covers only ");
2295 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2296 printf_filtered (" - ");
2297 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2298 printf_filtered ("\n");
2304 _initialize_psymtab (void)
2306 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2307 Print dump of current partial symbol definitions.\n\
2308 Usage: mt print psymbols [-objfile objfile] [-pc address] [--] [outfile]\n\
2309 mt print psymbols [-objfile objfile] [-source source] [--] [outfile]\n\
2310 Entries in the partial symbol table are dumped to file OUTFILE,\n\
2311 or the terminal if OUTFILE is unspecified.\n\
2312 If ADDRESS is provided, dump only the file for that address.\n\
2313 If SOURCE is provided, dump only that file's symbols.\n\
2314 If OBJFILE is provided, dump only that file's minimal symbols."),
2315 &maintenanceprintlist);
2317 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2318 List the partial symbol tables for all object files.\n\
2319 This does not include information about individual partial symbols,\n\
2320 just the symbol table structures themselves."),
2321 &maintenanceinfolist);
2323 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2325 Check consistency of currently expanded psymtabs versus symtabs."),