1 /* Partial symbol tables.
3 Copyright (C) 2009-2016 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"
40 #define DEV_TTY "/dev/tty"
45 struct bcache *bcache;
48 static struct partial_symbol *match_partial_symbol (struct objfile *,
49 struct partial_symtab *,
51 const char *, domain_enum,
52 symbol_compare_ftype *,
53 symbol_compare_ftype *);
55 static struct partial_symbol *lookup_partial_symbol (struct objfile *,
56 struct partial_symtab *,
60 static const char *psymtab_to_fullname (struct partial_symtab *ps);
62 static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
63 struct partial_symtab *,
65 struct obj_section *);
67 static void fixup_psymbol_section (struct partial_symbol *psym,
68 struct objfile *objfile);
70 static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
71 struct partial_symtab *pst);
73 /* Ensure that the partial symbols for OBJFILE have been loaded. This
74 function always returns its argument, as a convenience. */
77 require_partial_symbols (struct objfile *objfile, int verbose)
79 if ((objfile->flags & OBJF_PSYMTABS_READ) == 0)
81 objfile->flags |= OBJF_PSYMTABS_READ;
83 if (objfile->sf->sym_read_psymbols)
87 printf_unfiltered (_("Reading symbols from %s..."),
88 objfile_name (objfile));
89 gdb_flush (gdb_stdout);
91 (*objfile->sf->sym_read_psymbols) (objfile);
94 if (!objfile_has_symbols (objfile))
97 printf_unfiltered (_("(no debugging symbols found)..."));
101 printf_unfiltered (_("done.\n"));
109 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
112 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
113 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
117 /* We want to make sure this file always requires psymtabs. */
119 #undef ALL_OBJFILE_PSYMTABS
121 /* Traverse all psymtabs in all objfiles. */
123 #define ALL_PSYMTABS(objfile, p) \
124 ALL_OBJFILES (objfile) \
125 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
127 /* Helper function for psym_map_symtabs_matching_filename that
128 expands the symtabs and calls the iterator. */
131 partial_map_expand_apply (struct objfile *objfile,
133 const char *real_path,
134 struct partial_symtab *pst,
135 int (*callback) (struct symtab *, void *),
138 struct compunit_symtab *last_made = objfile->compunit_symtabs;
140 /* Shared psymtabs should never be seen here. Instead they should
141 be handled properly by the caller. */
142 gdb_assert (pst->user == NULL);
144 /* Don't visit already-expanded psymtabs. */
148 /* This may expand more than one symtab, and we want to iterate over
150 psymtab_to_symtab (objfile, pst);
152 return iterate_over_some_symtabs (name, real_path, callback, data,
153 objfile->compunit_symtabs, last_made);
156 /* Psymtab version of map_symtabs_matching_filename. See its definition in
157 the definition of quick_symbol_functions in symfile.h. */
160 psym_map_symtabs_matching_filename (struct objfile *objfile,
162 const char *real_path,
163 int (*callback) (struct symtab *,
167 struct partial_symtab *pst;
168 const char *name_basename = lbasename (name);
170 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
172 /* We can skip shared psymtabs here, because any file name will be
173 attached to the unshared psymtab. */
174 if (pst->user != NULL)
177 /* Anonymous psymtabs don't have a file name. */
181 if (compare_filenames_for_search (pst->filename, name))
183 if (partial_map_expand_apply (objfile, name, real_path,
184 pst, callback, data))
189 /* Before we invoke realpath, which can get expensive when many
190 files are involved, do a quick comparison of the basenames. */
191 if (! basenames_may_differ
192 && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
195 if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
197 if (partial_map_expand_apply (objfile, name, real_path,
198 pst, callback, data))
203 /* If the user gave us an absolute path, try to find the file in
204 this symtab and use its absolute path. */
205 if (real_path != NULL)
207 gdb_assert (IS_ABSOLUTE_PATH (real_path));
208 gdb_assert (IS_ABSOLUTE_PATH (name));
209 if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
211 if (partial_map_expand_apply (objfile, name, real_path,
212 pst, callback, data))
222 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
223 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
225 static struct partial_symtab *
226 find_pc_sect_psymtab_closer (struct objfile *objfile,
227 CORE_ADDR pc, struct obj_section *section,
228 struct partial_symtab *pst,
229 struct bound_minimal_symbol msymbol)
231 struct partial_symtab *tpst;
232 struct partial_symtab *best_pst = pst;
233 CORE_ADDR best_addr = pst->textlow;
235 gdb_assert (!pst->psymtabs_addrmap_supported);
237 /* An objfile that has its functions reordered might have
238 many partial symbol tables containing the PC, but
239 we want the partial symbol table that contains the
240 function containing the PC. */
241 if (!(objfile->flags & OBJF_REORDERED)
242 && section == NULL) /* Can't validate section this way. */
245 if (msymbol.minsym == NULL)
248 /* The code range of partial symtabs sometimes overlap, so, in
249 the loop below, we need to check all partial symtabs and
250 find the one that fits better for the given PC address. We
251 select the partial symtab that contains a symbol whose
252 address is closest to the PC address. By closest we mean
253 that find_pc_sect_symbol returns the symbol with address
254 that is closest and still less than the given PC. */
255 for (tpst = pst; tpst != NULL; tpst = tpst->next)
257 if (pc >= tpst->textlow && pc < tpst->texthigh)
259 struct partial_symbol *p;
262 /* NOTE: This assumes that every psymbol has a
263 corresponding msymbol, which is not necessarily
264 true; the debug info might be much richer than the
265 object's symbol table. */
266 p = find_pc_sect_psymbol (objfile, tpst, pc, section);
268 && (SYMBOL_VALUE_ADDRESS (p)
269 == BMSYMBOL_VALUE_ADDRESS (msymbol)))
272 /* Also accept the textlow value of a psymtab as a
273 "symbol", to provide some support for partial
274 symbol tables with line information but no debug
275 symbols (e.g. those produced by an assembler). */
277 this_addr = SYMBOL_VALUE_ADDRESS (p);
279 this_addr = tpst->textlow;
281 /* Check whether it is closer than our current
282 BEST_ADDR. Since this symbol address is
283 necessarily lower or equal to PC, the symbol closer
284 to PC is the symbol which address is the highest.
285 This way we return the psymtab which contains such
286 best match symbol. This can help in cases where the
287 symbol information/debuginfo is not complete, like
288 for instance on IRIX6 with gcc, where no debug info
289 is emitted for statics. (See also the nodebug.exp
291 if (this_addr > best_addr)
293 best_addr = this_addr;
301 /* Find which partial symtab contains PC and SECTION. Return NULL if
302 none. We return the psymtab that contains a symbol whose address
303 exactly matches PC, or, if we cannot find an exact match, the
304 psymtab that contains a symbol whose address is closest to PC. */
306 static struct partial_symtab *
307 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
308 struct obj_section *section,
309 struct bound_minimal_symbol msymbol)
311 struct partial_symtab *pst;
313 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
314 than the later used TEXTLOW/TEXTHIGH one. */
316 if (objfile->psymtabs_addrmap != NULL)
318 pst = ((struct partial_symtab *)
319 addrmap_find (objfile->psymtabs_addrmap, pc));
322 /* FIXME: addrmaps currently do not handle overlayed sections,
323 so fall back to the non-addrmap case if we're debugging
324 overlays and the addrmap returned the wrong section. */
325 if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
327 struct partial_symbol *p;
329 /* NOTE: This assumes that every psymbol has a
330 corresponding msymbol, which is not necessarily
331 true; the debug info might be much richer than the
332 object's symbol table. */
333 p = find_pc_sect_psymbol (objfile, pst, pc, section);
335 || (SYMBOL_VALUE_ADDRESS (p)
336 != BMSYMBOL_VALUE_ADDRESS (msymbol)))
340 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
341 PSYMTABS_ADDRMAP we used has already the best 1-byte
342 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
343 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
352 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
353 which still have no corresponding full SYMTABs read. But it is not
354 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
357 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
358 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
359 debug info type in single OBJFILE. */
361 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
362 if (!pst->psymtabs_addrmap_supported
363 && pc >= pst->textlow && pc < pst->texthigh)
365 struct partial_symtab *best_pst;
367 best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
369 if (best_pst != NULL)
376 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
377 the definition of quick_symbol_functions in symfile.h. */
379 static struct compunit_symtab *
380 psym_find_pc_sect_compunit_symtab (struct objfile *objfile,
381 struct bound_minimal_symbol msymbol,
383 struct obj_section *section,
386 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
390 if (warn_if_readin && ps->readin)
391 /* Might want to error() here (in case symtab is corrupt and
392 will cause a core dump), but maybe we can successfully
393 continue, so let's not. */
395 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
396 paddress (get_objfile_arch (objfile), pc));
397 psymtab_to_symtab (objfile, ps);
398 return ps->compunit_symtab;
403 /* Find which partial symbol within a psymtab matches PC and SECTION.
404 Return NULL if none. */
406 static struct partial_symbol *
407 find_pc_sect_psymbol (struct objfile *objfile,
408 struct partial_symtab *psymtab, CORE_ADDR pc,
409 struct obj_section *section)
411 struct partial_symbol *best = NULL, *p, **pp;
414 gdb_assert (psymtab != NULL);
416 /* Cope with programs that start at address 0. */
417 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
419 /* Search the global symbols as well as the static symbols, so that
420 find_pc_partial_function doesn't use a minimal symbol and thus
421 cache a bad endaddr. */
422 for (pp = objfile->global_psymbols.list + psymtab->globals_offset;
423 (pp - (objfile->global_psymbols.list + psymtab->globals_offset)
424 < psymtab->n_global_syms);
428 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
429 && PSYMBOL_CLASS (p) == LOC_BLOCK
430 && pc >= SYMBOL_VALUE_ADDRESS (p)
431 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
432 || (psymtab->textlow == 0
433 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
435 if (section != NULL) /* Match on a specific section. */
437 fixup_psymbol_section (p, objfile);
438 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
442 best_pc = SYMBOL_VALUE_ADDRESS (p);
447 for (pp = objfile->static_psymbols.list + psymtab->statics_offset;
448 (pp - (objfile->static_psymbols.list + psymtab->statics_offset)
449 < psymtab->n_static_syms);
453 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
454 && PSYMBOL_CLASS (p) == LOC_BLOCK
455 && pc >= SYMBOL_VALUE_ADDRESS (p)
456 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
457 || (psymtab->textlow == 0
458 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
460 if (section != NULL) /* Match on a specific section. */
462 fixup_psymbol_section (p, objfile);
463 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
467 best_pc = SYMBOL_VALUE_ADDRESS (p);
476 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
483 if (SYMBOL_SECTION (psym) >= 0)
486 gdb_assert (objfile);
488 switch (PSYMBOL_CLASS (psym))
493 addr = SYMBOL_VALUE_ADDRESS (psym);
496 /* Nothing else will be listed in the minsyms -- no use looking
501 fixup_section (&psym->ginfo, addr, objfile);
504 /* Psymtab version of lookup_symbol. See its definition in
505 the definition of quick_symbol_functions in symfile.h. */
507 static struct compunit_symtab *
508 psym_lookup_symbol (struct objfile *objfile,
509 int block_index, const char *name,
510 const domain_enum domain)
512 struct partial_symtab *ps;
513 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
514 struct compunit_symtab *stab_best = NULL;
516 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
518 if (!ps->readin && lookup_partial_symbol (objfile, ps, name,
519 psymtab_index, domain))
521 struct symbol *sym, *with_opaque = NULL;
522 struct compunit_symtab *stab = psymtab_to_symtab (objfile, ps);
523 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
524 is empty, we can assume it won't here because lookup_partial_symbol
526 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab);
527 struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
529 sym = block_find_symbol (block, name, domain,
530 block_find_non_opaque_type_preferred,
533 /* Some caution must be observed with overloaded functions
534 and methods, since the index will not contain any overload
535 information (but NAME might contain it). */
538 && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0)
540 if (with_opaque != NULL
541 && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0)
544 /* Keep looking through other psymtabs. */
551 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
552 the global block of PST if GLOBAL, and otherwise the static block.
553 MATCH is the comparison operation that returns true iff MATCH (s,
554 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
555 non-null, the symbols in the block are assumed to be ordered
556 according to it (allowing binary search). It must be compatible
557 with MATCH. Returns the symbol, if found, and otherwise NULL. */
559 static struct partial_symbol *
560 match_partial_symbol (struct objfile *objfile,
561 struct partial_symtab *pst, int global,
562 const char *name, domain_enum domain,
563 symbol_compare_ftype *match,
564 symbol_compare_ftype *ordered_compare)
566 struct partial_symbol **start, **psym;
567 struct partial_symbol **top, **real_top, **bottom, **center;
568 int length = (global ? pst->n_global_syms : pst->n_static_syms);
569 int do_linear_search = 1;
574 objfile->global_psymbols.list + pst->globals_offset :
575 objfile->static_psymbols.list + pst->statics_offset);
577 if (global && ordered_compare) /* Can use a binary search. */
579 do_linear_search = 0;
581 /* Binary search. This search is guaranteed to end with center
582 pointing at the earliest partial symbol whose name might be
583 correct. At that point *all* partial symbols with an
584 appropriate name will be checked against the correct
588 top = start + length - 1;
592 center = bottom + (top - bottom) / 2;
593 gdb_assert (center < top);
594 if (!do_linear_search
595 && (SYMBOL_LANGUAGE (*center) == language_java))
596 do_linear_search = 1;
597 if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
602 gdb_assert (top == bottom);
604 while (top <= real_top
605 && match (SYMBOL_SEARCH_NAME (*top), name) == 0)
607 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
608 SYMBOL_DOMAIN (*top), domain))
614 /* Can't use a binary search or else we found during the binary search that
615 we should also do a linear search. */
617 if (do_linear_search)
619 for (psym = start; psym < start + length; psym++)
621 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
622 SYMBOL_DOMAIN (*psym), domain)
623 && match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
631 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
632 not contain any method/function instance information (since this would
633 force reading type information while reading psymtabs). Therefore,
634 if NAME contains overload information, it must be stripped before searching
637 The caller is responsible for freeing the return result. */
640 psymtab_search_name (const char *name)
642 switch (current_language->la_language)
647 if (strchr (name, '('))
649 char *ret = cp_remove_params (name);
661 return xstrdup (name);
664 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
665 Check the global symbols if GLOBAL, the static symbols if not. */
667 static struct partial_symbol *
668 lookup_partial_symbol (struct objfile *objfile,
669 struct partial_symtab *pst, const char *name,
670 int global, domain_enum domain)
672 struct partial_symbol **start, **psym;
673 struct partial_symbol **top, **real_top, **bottom, **center;
674 int length = (global ? pst->n_global_syms : pst->n_static_syms);
675 int do_linear_search = 1;
677 struct cleanup *cleanup;
682 search_name = psymtab_search_name (name);
683 cleanup = make_cleanup (xfree, search_name);
685 objfile->global_psymbols.list + pst->globals_offset :
686 objfile->static_psymbols.list + pst->statics_offset);
688 if (global) /* This means we can use a binary search. */
690 do_linear_search = 0;
692 /* Binary search. This search is guaranteed to end with center
693 pointing at the earliest partial symbol whose name might be
694 correct. At that point *all* partial symbols with an
695 appropriate name will be checked against the correct
699 top = start + length - 1;
703 center = bottom + (top - bottom) / 2;
705 internal_error (__FILE__, __LINE__,
706 _("failed internal consistency check"));
707 if (!do_linear_search
708 && SYMBOL_LANGUAGE (*center) == language_java)
710 do_linear_search = 1;
712 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center),
722 if (!(top == bottom))
723 internal_error (__FILE__, __LINE__,
724 _("failed internal consistency check"));
726 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
727 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
728 while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
731 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
734 while (top <= real_top && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
736 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
737 SYMBOL_DOMAIN (*top), domain))
739 do_cleanups (cleanup);
746 /* Can't use a binary search or else we found during the binary search that
747 we should also do a linear search. */
749 if (do_linear_search)
751 for (psym = start; psym < start + length; psym++)
753 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
754 SYMBOL_DOMAIN (*psym), domain)
755 && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name))
757 do_cleanups (cleanup);
763 do_cleanups (cleanup);
767 /* Get the symbol table that corresponds to a partial_symtab.
768 This is fast after the first time you do it.
769 The result will be NULL if the primary symtab has no symbols,
770 which can happen. Otherwise the result is the primary symtab
771 that contains PST. */
773 static struct compunit_symtab *
774 psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
776 /* If it is a shared psymtab, find an unshared psymtab that includes
777 it. Any such psymtab will do. */
778 while (pst->user != NULL)
781 /* If it's been looked up before, return it. */
782 if (pst->compunit_symtab)
783 return pst->compunit_symtab;
785 /* If it has not yet been read in, read it. */
788 struct cleanup *back_to = increment_reading_symtab ();
790 (*pst->read_symtab) (pst, objfile);
791 do_cleanups (back_to);
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_symbol **psym;
806 struct partial_symtab *p;
808 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
810 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
811 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
814 for (psym = objfile->global_psymbols.list;
815 psym < objfile->global_psymbols.next;
818 fixup_psymbol_section (*psym, objfile);
819 if (SYMBOL_SECTION (*psym) >= 0)
820 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
821 SYMBOL_SECTION (*psym));
823 for (psym = objfile->static_psymbols.list;
824 psym < objfile->static_psymbols.next;
827 fixup_psymbol_section (*psym, objfile);
828 if (SYMBOL_SECTION (*psym) >= 0)
829 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
830 SYMBOL_SECTION (*psym));
834 /* Psymtab version of find_last_source_symtab. See its definition in
835 the definition of quick_symbol_functions in symfile.h. */
837 static struct symtab *
838 psym_find_last_source_symtab (struct objfile *ofp)
840 struct partial_symtab *ps;
841 struct partial_symtab *cs_pst = NULL;
843 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps)
845 const char *name = ps->filename;
846 int len = strlen (name);
848 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
849 || strcmp (name, "<<C++-namespaces>>") == 0)))
857 internal_error (__FILE__, __LINE__,
858 _("select_source_symtab: "
859 "readin pst found and no symtabs."));
863 struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
867 return compunit_primary_filetab (cust);
873 /* Psymtab version of forget_cached_source_info. See its definition in
874 the definition of quick_symbol_functions in symfile.h. */
877 psym_forget_cached_source_info (struct objfile *objfile)
879 struct partial_symtab *pst;
881 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
883 if (pst->fullname != NULL)
885 xfree (pst->fullname);
886 pst->fullname = NULL;
892 print_partial_symbols (struct gdbarch *gdbarch,
893 struct partial_symbol **p, int count, char *what,
894 struct ui_file *outfile)
896 fprintf_filtered (outfile, " %s partial symbols:\n", what);
900 fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
901 if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
903 fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
905 fputs_filtered (", ", outfile);
906 switch (SYMBOL_DOMAIN (*p))
909 fputs_filtered ("undefined domain, ", outfile);
912 /* This is the usual thing -- don't print it. */
915 fputs_filtered ("struct domain, ", outfile);
918 fputs_filtered ("label domain, ", outfile);
921 fputs_filtered ("<invalid domain>, ", outfile);
924 switch (PSYMBOL_CLASS (*p))
927 fputs_filtered ("undefined", outfile);
930 fputs_filtered ("constant int", outfile);
933 fputs_filtered ("static", outfile);
936 fputs_filtered ("register", outfile);
939 fputs_filtered ("pass by value", outfile);
942 fputs_filtered ("pass by reference", outfile);
944 case LOC_REGPARM_ADDR:
945 fputs_filtered ("register address parameter", outfile);
948 fputs_filtered ("stack parameter", outfile);
951 fputs_filtered ("type", outfile);
954 fputs_filtered ("label", outfile);
957 fputs_filtered ("function", outfile);
959 case LOC_CONST_BYTES:
960 fputs_filtered ("constant bytes", outfile);
963 fputs_filtered ("unresolved", outfile);
965 case LOC_OPTIMIZED_OUT:
966 fputs_filtered ("optimized out", outfile);
969 fputs_filtered ("computed at runtime", outfile);
972 fputs_filtered ("<invalid location>", outfile);
975 fputs_filtered (", ", outfile);
976 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
977 fprintf_filtered (outfile, "\n");
983 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
984 struct ui_file *outfile)
986 struct gdbarch *gdbarch = get_objfile_arch (objfile);
989 if (psymtab->anonymous)
991 fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
996 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
999 fprintf_filtered (outfile, "(object ");
1000 gdb_print_host_address (psymtab, outfile);
1001 fprintf_filtered (outfile, ")\n\n");
1002 fprintf_unfiltered (outfile, " Read from object file %s (",
1003 objfile_name (objfile));
1004 gdb_print_host_address (objfile, outfile);
1005 fprintf_unfiltered (outfile, ")\n");
1007 if (psymtab->readin)
1009 fprintf_filtered (outfile,
1010 " Full symtab was read (at ");
1011 gdb_print_host_address (psymtab->compunit_symtab, outfile);
1012 fprintf_filtered (outfile, " by function at ");
1013 gdb_print_host_address (psymtab->read_symtab, outfile);
1014 fprintf_filtered (outfile, ")\n");
1017 fprintf_filtered (outfile, " Symbols cover text addresses ");
1018 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
1019 fprintf_filtered (outfile, "-");
1020 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
1021 fprintf_filtered (outfile, "\n");
1022 fprintf_filtered (outfile, " Address map supported - %s.\n",
1023 psymtab->psymtabs_addrmap_supported ? "yes" : "no");
1024 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
1025 psymtab->number_of_dependencies);
1026 for (i = 0; i < psymtab->number_of_dependencies; i++)
1028 fprintf_filtered (outfile, " %d ", i);
1029 gdb_print_host_address (psymtab->dependencies[i], outfile);
1030 fprintf_filtered (outfile, " %s\n",
1031 psymtab->dependencies[i]->filename);
1033 if (psymtab->user != NULL)
1035 fprintf_filtered (outfile, " Shared partial symtab with user ");
1036 gdb_print_host_address (psymtab->user, outfile);
1037 fprintf_filtered (outfile, "\n");
1039 if (psymtab->n_global_syms > 0)
1041 print_partial_symbols (gdbarch,
1042 objfile->global_psymbols.list
1043 + psymtab->globals_offset,
1044 psymtab->n_global_syms, "Global", outfile);
1046 if (psymtab->n_static_syms > 0)
1048 print_partial_symbols (gdbarch,
1049 objfile->static_psymbols.list
1050 + psymtab->statics_offset,
1051 psymtab->n_static_syms, "Static", outfile);
1053 fprintf_filtered (outfile, "\n");
1056 /* Psymtab version of print_stats. See its definition in
1057 the definition of quick_symbol_functions in symfile.h. */
1060 psym_print_stats (struct objfile *objfile)
1063 struct partial_symtab *ps;
1066 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1068 if (ps->readin == 0)
1071 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
1074 /* Psymtab version of dump. See its definition in
1075 the definition of quick_symbol_functions in symfile.h. */
1078 psym_dump (struct objfile *objfile)
1080 struct partial_symtab *psymtab;
1082 if (objfile->psymtabs)
1084 printf_filtered ("Psymtabs:\n");
1085 for (psymtab = objfile->psymtabs;
1087 psymtab = psymtab->next)
1089 printf_filtered ("%s at ",
1091 gdb_print_host_address (psymtab, gdb_stdout);
1092 printf_filtered (", ");
1095 printf_filtered ("\n\n");
1099 /* Psymtab version of expand_symtabs_for_function. See its definition in
1100 the definition of quick_symbol_functions in symfile.h. */
1103 psym_expand_symtabs_for_function (struct objfile *objfile,
1104 const char *func_name)
1106 struct partial_symtab *ps;
1108 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1113 if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN)
1115 || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN)
1117 psymtab_to_symtab (objfile, ps);
1121 /* Psymtab version of expand_all_symtabs. See its definition in
1122 the definition of quick_symbol_functions in symfile.h. */
1125 psym_expand_all_symtabs (struct objfile *objfile)
1127 struct partial_symtab *psymtab;
1129 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
1131 psymtab_to_symtab (objfile, psymtab);
1135 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1136 the definition of quick_symbol_functions in symfile.h. */
1139 psym_expand_symtabs_with_fullname (struct objfile *objfile,
1140 const char *fullname)
1142 struct partial_symtab *p;
1144 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
1146 /* Anonymous psymtabs don't have a name of a source file. */
1150 /* psymtab_to_fullname tries to open the file which is slow.
1151 Don't call it if we know the basenames don't match. */
1152 if ((basenames_may_differ
1153 || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
1154 && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
1155 psymtab_to_symtab (objfile, p);
1159 /* Psymtab version of map_symbol_filenames. See its definition in
1160 the definition of quick_symbol_functions in symfile.h. */
1163 psym_map_symbol_filenames (struct objfile *objfile,
1164 symbol_filename_ftype *fun, void *data,
1167 struct partial_symtab *ps;
1169 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1171 const char *fullname;
1176 /* We can skip shared psymtabs here, because any file name will be
1177 attached to the unshared psymtab. */
1178 if (ps->user != NULL)
1181 /* Anonymous psymtabs don't have a file name. */
1187 fullname = psymtab_to_fullname (ps);
1190 (*fun) (ps->filename, fullname, data);
1194 /* Finds the fullname that a partial_symtab represents.
1196 If this functions finds the fullname, it will save it in ps->fullname
1197 and it will also return the value.
1199 If this function fails to find the file that this partial_symtab represents,
1200 NULL will be returned and ps->fullname will be set to NULL. */
1203 psymtab_to_fullname (struct partial_symtab *ps)
1205 gdb_assert (!ps->anonymous);
1207 /* Use cached copy if we have it.
1208 We rely on forget_cached_source_info being called appropriately
1209 to handle cases like the file being moved. */
1210 if (ps->fullname == NULL)
1212 int fd = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
1219 struct cleanup *back_to;
1221 /* rewrite_source_path would be applied by find_and_open_source, we
1222 should report the pathname where GDB tried to find the file. */
1224 if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
1225 fullname = xstrdup (ps->filename);
1227 fullname = concat (ps->dirname, SLASH_STRING,
1228 ps->filename, (char *) NULL);
1230 back_to = make_cleanup (xfree, fullname);
1231 ps->fullname = rewrite_source_path (fullname);
1232 if (ps->fullname == NULL)
1233 ps->fullname = xstrdup (fullname);
1234 do_cleanups (back_to);
1238 return ps->fullname;
1241 /* For all symbols, s, in BLOCK that are in DOMAIN and match NAME
1242 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1243 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1244 ever returns non-zero, and otherwise returns 0. */
1247 map_block (const char *name, domain_enum domain, struct objfile *objfile,
1248 struct block *block,
1249 int (*callback) (struct block *, struct symbol *, void *),
1250 void *data, symbol_compare_ftype *match)
1252 struct block_iterator iter;
1255 for (sym = block_iter_match_first (block, name, match, &iter);
1256 sym != NULL; sym = block_iter_match_next (name, match, &iter))
1258 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1259 SYMBOL_DOMAIN (sym), domain))
1261 if (callback (block, sym, data))
1269 /* Psymtab version of map_matching_symbols. See its definition in
1270 the definition of quick_symbol_functions in symfile.h. */
1273 psym_map_matching_symbols (struct objfile *objfile,
1274 const char *name, domain_enum domain,
1276 int (*callback) (struct block *,
1277 struct symbol *, void *),
1279 symbol_compare_ftype *match,
1280 symbol_compare_ftype *ordered_compare)
1282 const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
1283 struct partial_symtab *ps;
1285 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1289 || match_partial_symbol (objfile, ps, global, name, domain, match,
1292 struct compunit_symtab *cust = psymtab_to_symtab (objfile, ps);
1293 struct block *block;
1297 block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind);
1298 if (map_block (name, domain, objfile, block,
1299 callback, data, match))
1301 if (callback (block, NULL, data))
1307 /* A helper for psym_expand_symtabs_matching that handles
1308 searching included psymtabs. This returns 1 if a symbol is found,
1309 and zero otherwise. It also updates the 'searched_flag' on the
1310 various psymtabs that it searches. */
1313 recursively_search_psymtabs (struct partial_symtab *ps,
1314 struct objfile *objfile,
1315 enum search_domain kind,
1316 expand_symtabs_symbol_matcher_ftype *sym_matcher,
1319 struct partial_symbol **psym;
1320 struct partial_symbol **bound, **gbound, **sbound;
1322 enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
1325 if (ps->searched_flag != PST_NOT_SEARCHED)
1326 return ps->searched_flag == PST_SEARCHED_AND_FOUND;
1328 /* Recurse into shared psymtabs first, because they may have already
1329 been searched, and this could save some time. */
1330 for (i = 0; i < ps->number_of_dependencies; ++i)
1334 /* Skip non-shared dependencies, these are handled elsewhere. */
1335 if (ps->dependencies[i]->user == NULL)
1338 r = recursively_search_psymtabs (ps->dependencies[i],
1339 objfile, kind, sym_matcher, data);
1342 ps->searched_flag = PST_SEARCHED_AND_FOUND;
1347 gbound = (objfile->global_psymbols.list
1348 + ps->globals_offset + ps->n_global_syms);
1349 sbound = (objfile->static_psymbols.list
1350 + ps->statics_offset + ps->n_static_syms);
1353 /* Go through all of the symbols stored in a partial
1354 symtab in one loop. */
1355 psym = objfile->global_psymbols.list + ps->globals_offset;
1360 if (bound == gbound && ps->n_static_syms != 0)
1362 psym = objfile->static_psymbols.list + ps->statics_offset;
1373 if ((kind == ALL_DOMAIN
1374 || (kind == VARIABLES_DOMAIN
1375 && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF
1376 && PSYMBOL_CLASS (*psym) != LOC_BLOCK)
1377 || (kind == FUNCTIONS_DOMAIN
1378 && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
1379 || (kind == TYPES_DOMAIN
1380 && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
1381 && (*sym_matcher) (SYMBOL_SEARCH_NAME (*psym), data))
1383 /* Found a match, so notify our caller. */
1384 result = PST_SEARCHED_AND_FOUND;
1391 ps->searched_flag = result;
1392 return result == PST_SEARCHED_AND_FOUND;
1395 /* Psymtab version of expand_symtabs_matching. See its definition in
1396 the definition of quick_symbol_functions in symfile.h. */
1399 psym_expand_symtabs_matching
1400 (struct objfile *objfile,
1401 expand_symtabs_file_matcher_ftype *file_matcher,
1402 expand_symtabs_symbol_matcher_ftype *symbol_matcher,
1403 expand_symtabs_exp_notify_ftype *expansion_notify,
1404 enum search_domain kind,
1407 struct partial_symtab *ps;
1409 /* Clear the search flags. */
1410 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1412 ps->searched_flag = PST_NOT_SEARCHED;
1415 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
1422 /* We skip shared psymtabs because file-matching doesn't apply
1423 to them; but we search them later in the loop. */
1424 if (ps->user != NULL)
1434 match = (*file_matcher) (ps->filename, data, 0);
1437 /* Before we invoke realpath, which can get expensive when many
1438 files are involved, do a quick comparison of the basenames. */
1439 if (basenames_may_differ
1440 || (*file_matcher) (lbasename (ps->filename), data, 1))
1441 match = (*file_matcher) (psymtab_to_fullname (ps), data, 0);
1447 if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher, data))
1449 struct compunit_symtab *symtab =
1450 psymtab_to_symtab (objfile, ps);
1452 if (expansion_notify != NULL)
1453 expansion_notify (symtab, data);
1458 /* Psymtab version of has_symbols. See its definition in
1459 the definition of quick_symbol_functions in symfile.h. */
1462 psym_has_symbols (struct objfile *objfile)
1464 return objfile->psymtabs != NULL;
1467 const struct quick_symbol_functions psym_functions =
1470 psym_find_last_source_symtab,
1471 psym_forget_cached_source_info,
1472 psym_map_symtabs_matching_filename,
1477 psym_expand_symtabs_for_function,
1478 psym_expand_all_symtabs,
1479 psym_expand_symtabs_with_fullname,
1480 psym_map_matching_symbols,
1481 psym_expand_symtabs_matching,
1482 psym_find_pc_sect_compunit_symtab,
1483 psym_map_symbol_filenames
1488 /* This compares two partial symbols by names, using strcmp_iw_ordered
1489 for the comparison. */
1492 compare_psymbols (const void *s1p, const void *s2p)
1494 struct partial_symbol *const *s1 = (struct partial_symbol * const*) s1p;
1495 struct partial_symbol *const *s2 = (struct partial_symbol * const*) s2p;
1497 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
1498 SYMBOL_SEARCH_NAME (*s2));
1502 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
1504 /* Sort the global list; don't sort the static list. */
1506 qsort (objfile->global_psymbols.list + pst->globals_offset,
1507 pst->n_global_syms, sizeof (struct partial_symbol *),
1511 /* Allocate and partially fill a partial symtab. It will be
1512 completely filled at the end of the symbol list.
1514 FILENAME is the name of the symbol-file we are reading from. */
1516 struct partial_symtab *
1517 start_psymtab_common (struct objfile *objfile,
1518 const char *filename,
1519 CORE_ADDR textlow, struct partial_symbol **global_syms,
1520 struct partial_symbol **static_syms)
1522 struct partial_symtab *psymtab;
1524 psymtab = allocate_psymtab (filename, objfile);
1525 psymtab->textlow = textlow;
1526 psymtab->texthigh = psymtab->textlow; /* default */
1527 psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
1528 psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
1532 /* Perform "finishing up" operations of a partial symtab. */
1535 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
1538 = objfile->global_psymbols.next - (objfile->global_psymbols.list
1539 + pst->globals_offset);
1541 = objfile->static_psymbols.next - (objfile->static_psymbols.list
1542 + pst->statics_offset);
1544 sort_pst_symbols (objfile, pst);
1547 /* Calculate a hash code for the given partial symbol. The hash is
1548 calculated using the symbol's value, language, domain, class
1549 and name. These are the values which are set by
1550 add_psymbol_to_bcache. */
1552 static unsigned long
1553 psymbol_hash (const void *addr, int length)
1555 unsigned long h = 0;
1556 struct partial_symbol *psymbol = (struct partial_symbol *) addr;
1557 unsigned int lang = psymbol->ginfo.language;
1558 unsigned int domain = PSYMBOL_DOMAIN (psymbol);
1559 unsigned int theclass = PSYMBOL_CLASS (psymbol);
1561 h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
1562 h = hash_continue (&lang, sizeof (unsigned int), h);
1563 h = hash_continue (&domain, sizeof (unsigned int), h);
1564 h = hash_continue (&theclass, sizeof (unsigned int), h);
1565 h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
1570 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1571 For the comparison this function uses a symbols value,
1572 language, domain, class and name. */
1575 psymbol_compare (const void *addr1, const void *addr2, int length)
1577 struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
1578 struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
1580 return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value,
1581 sizeof (sym1->ginfo.value)) == 0
1582 && sym1->ginfo.language == sym2->ginfo.language
1583 && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
1584 && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
1585 && sym1->ginfo.name == sym2->ginfo.name);
1588 /* Initialize a partial symbol bcache. */
1590 struct psymbol_bcache *
1591 psymbol_bcache_init (void)
1593 struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
1595 bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
1599 /* Free a partial symbol bcache. */
1602 psymbol_bcache_free (struct psymbol_bcache *bcache)
1607 bcache_xfree (bcache->bcache);
1611 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1614 psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
1616 return bcache->bcache;
1619 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1620 symbol before, add a copy to BCACHE. In either case, return a pointer
1621 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1622 1 in case of new entry or 0 if returning an old entry. */
1624 static const struct partial_symbol *
1625 psymbol_bcache_full (struct partial_symbol *sym,
1626 struct psymbol_bcache *bcache,
1629 return ((const struct partial_symbol *)
1630 bcache_full (sym, sizeof (struct partial_symbol), bcache->bcache,
1634 /* Helper function, initialises partial symbol structure and stashes
1635 it into objfile's bcache. Note that our caching mechanism will
1636 use all fields of struct partial_symbol to determine hash value of the
1637 structure. In other words, having two symbols with the same name but
1638 different domain (or address) is possible and correct. */
1640 static const struct partial_symbol *
1641 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
1643 enum address_class theclass,
1645 enum language language, struct objfile *objfile,
1648 struct partial_symbol psymbol;
1650 /* We must ensure that the entire struct has been zeroed before
1651 assigning to it, because an assignment may not touch some of the
1653 memset (&psymbol, 0, sizeof (psymbol));
1655 SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
1656 SYMBOL_SECTION (&psymbol) = -1;
1657 SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack);
1658 PSYMBOL_DOMAIN (&psymbol) = domain;
1659 PSYMBOL_CLASS (&psymbol) = theclass;
1661 SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
1663 /* Stash the partial symbol away in the cache. */
1664 return psymbol_bcache_full (&psymbol, objfile->psymbol_cache, added);
1667 /* Increase the space allocated for LISTP, which is probably
1668 global_psymbols or static_psymbols. This space will eventually
1669 be freed in free_objfile(). */
1672 extend_psymbol_list (struct psymbol_allocation_list *listp,
1673 struct objfile *objfile)
1677 if (listp->size == 0)
1680 listp->list = XNEWVEC (struct partial_symbol *, new_size);
1684 new_size = listp->size * 2;
1685 listp->list = (struct partial_symbol **)
1686 xrealloc ((char *) listp->list,
1687 new_size * sizeof (struct partial_symbol *));
1689 /* Next assumes we only went one over. Should be good if
1690 program works correctly. */
1691 listp->next = listp->list + listp->size;
1692 listp->size = new_size;
1695 /* Helper function, adds partial symbol to the given partial symbol list. */
1698 append_psymbol_to_list (struct psymbol_allocation_list *list,
1699 const struct partial_symbol *psym,
1700 struct objfile *objfile)
1702 if (list->next >= list->list + list->size)
1703 extend_psymbol_list (list, objfile);
1704 *list->next++ = (struct partial_symbol *) psym;
1705 OBJSTAT (objfile, n_psyms++);
1708 /* Add a symbol with a long value to a psymtab.
1709 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1710 The only value we need to store for psyms is an address.
1711 For all other psyms pass zero for COREADDR.
1712 Return the partial symbol that has been added. */
1715 add_psymbol_to_list (const char *name, int namelength, int copy_name,
1717 enum address_class theclass,
1718 struct psymbol_allocation_list *list,
1720 enum language language, struct objfile *objfile)
1722 const struct partial_symbol *psym;
1726 /* Stash the partial symbol away in the cache. */
1727 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, theclass,
1728 coreaddr, language, objfile, &added);
1730 /* Do not duplicate global partial symbols. */
1731 if (list == &objfile->global_psymbols
1735 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1736 append_psymbol_to_list (list, psym, objfile);
1739 /* Initialize storage for partial symbols. */
1742 init_psymbol_list (struct objfile *objfile, int total_symbols)
1744 /* Free any previously allocated psymbol lists. */
1746 if (objfile->global_psymbols.list)
1747 xfree (objfile->global_psymbols.list);
1748 if (objfile->static_psymbols.list)
1749 xfree (objfile->static_psymbols.list);
1751 /* Current best guess is that approximately a twentieth
1752 of the total symbols (in a debugging file) are global or static
1753 oriented symbols, then multiply that by slop factor of two. */
1755 objfile->global_psymbols.size = total_symbols / 10;
1756 objfile->static_psymbols.size = total_symbols / 10;
1758 if (objfile->global_psymbols.size > 0)
1760 objfile->global_psymbols.next =
1761 objfile->global_psymbols.list =
1762 XNEWVEC (struct partial_symbol *, objfile->global_psymbols.size);
1764 if (objfile->static_psymbols.size > 0)
1766 objfile->static_psymbols.next =
1767 objfile->static_psymbols.list =
1768 XNEWVEC (struct partial_symbol *, objfile->static_psymbols.size);
1772 struct partial_symtab *
1773 allocate_psymtab (const char *filename, struct objfile *objfile)
1775 struct partial_symtab *psymtab;
1777 if (objfile->free_psymtabs)
1779 psymtab = objfile->free_psymtabs;
1780 objfile->free_psymtabs = psymtab->next;
1783 psymtab = (struct partial_symtab *)
1784 obstack_alloc (&objfile->objfile_obstack,
1785 sizeof (struct partial_symtab));
1787 memset (psymtab, 0, sizeof (struct partial_symtab));
1789 = (const char *) bcache (filename, strlen (filename) + 1,
1790 objfile->per_bfd->filename_cache);
1791 psymtab->compunit_symtab = NULL;
1793 /* Prepend it to the psymtab list for the objfile it belongs to.
1794 Psymtabs are searched in most recent inserted -> least recent
1797 psymtab->next = objfile->psymtabs;
1798 objfile->psymtabs = psymtab;
1800 if (symtab_create_debug)
1802 /* Be a bit clever with debugging messages, and don't print objfile
1803 every time, only when it changes. */
1804 static char *last_objfile_name = NULL;
1806 if (last_objfile_name == NULL
1807 || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
1809 xfree (last_objfile_name);
1810 last_objfile_name = xstrdup (objfile_name (objfile));
1811 fprintf_unfiltered (gdb_stdlog,
1812 "Creating one or more psymtabs for objfile %s ...\n",
1815 fprintf_unfiltered (gdb_stdlog,
1816 "Created psymtab %s for module %s.\n",
1817 host_address_to_string (psymtab), filename);
1824 discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
1826 struct partial_symtab **prev_pst;
1829 Empty psymtabs happen as a result of header files which don't
1830 have any symbols in them. There can be a lot of them. But this
1831 check is wrong, in that a psymtab with N_SLINE entries but
1832 nothing else is not empty, but we don't realize that. Fixing
1833 that without slowing things down might be tricky. */
1835 /* First, snip it out of the psymtab chain. */
1837 prev_pst = &(objfile->psymtabs);
1838 while ((*prev_pst) != pst)
1839 prev_pst = &((*prev_pst)->next);
1840 (*prev_pst) = pst->next;
1842 /* Next, put it on a free list for recycling. */
1844 pst->next = objfile->free_psymtabs;
1845 objfile->free_psymtabs = pst;
1848 /* An object of this type is passed to discard_psymtabs_upto. */
1850 struct psymtab_state
1852 /* The objfile where psymtabs are discarded. */
1854 struct objfile *objfile;
1856 /* The first psymtab to save. */
1858 struct partial_symtab *save;
1861 /* A cleanup function used by make_cleanup_discard_psymtabs. */
1864 discard_psymtabs_upto (void *arg)
1866 struct psymtab_state *state = (struct psymtab_state *) arg;
1868 while (state->objfile->psymtabs != state->save)
1869 discard_psymtab (state->objfile, state->objfile->psymtabs);
1872 /* Return a new cleanup that discards all psymtabs created in OBJFILE
1873 after this function is called. */
1876 make_cleanup_discard_psymtabs (struct objfile *objfile)
1878 struct psymtab_state *state = XNEW (struct psymtab_state);
1880 state->objfile = objfile;
1881 state->save = objfile->psymtabs;
1883 return make_cleanup_dtor (discard_psymtabs_upto, state, xfree);
1888 /* We need to pass a couple of items to the addrmap_foreach function,
1891 struct dump_psymtab_addrmap_data
1893 struct objfile *objfile;
1894 struct partial_symtab *psymtab;
1895 struct ui_file *outfile;
1897 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1898 If so, we want to print the next one as well (since the next addrmap
1899 entry defines the end of the range). */
1900 int previous_matched;
1903 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1906 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
1908 struct dump_psymtab_addrmap_data *data
1909 = (struct dump_psymtab_addrmap_data *) datap;
1910 struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
1911 struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
1912 const char *psymtab_address_or_end = NULL;
1916 if (data->psymtab == NULL
1917 || data->psymtab == addrmap_psymtab)
1918 psymtab_address_or_end = host_address_to_string (addrmap_psymtab);
1919 else if (data->previous_matched)
1920 psymtab_address_or_end = "<ends here>";
1922 if (data->psymtab == NULL
1923 || data->psymtab == addrmap_psymtab
1924 || data->previous_matched)
1926 fprintf_filtered (data->outfile, " %s%s %s\n",
1927 data->psymtab != NULL ? " " : "",
1928 paddress (gdbarch, start_addr),
1929 psymtab_address_or_end);
1932 data->previous_matched = (data->psymtab == NULL
1933 || data->psymtab == addrmap_psymtab);
1938 /* Helper function for maintenance_print_psymbols to print the addrmap
1939 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1942 dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
1943 struct ui_file *outfile)
1945 struct dump_psymtab_addrmap_data addrmap_dump_data;
1948 || psymtab->psymtabs_addrmap_supported)
1950 addrmap_dump_data.objfile = objfile;
1951 addrmap_dump_data.psymtab = psymtab;
1952 addrmap_dump_data.outfile = outfile;
1953 addrmap_dump_data.previous_matched = 0;
1954 fprintf_filtered (outfile, "%sddress map:\n",
1955 psymtab == NULL ? "Entire a" : " A");
1956 addrmap_foreach (objfile->psymtabs_addrmap, dump_psymtab_addrmap_1,
1957 &addrmap_dump_data);
1962 maintenance_print_psymbols (char *args, int from_tty)
1965 struct ui_file *outfile;
1966 struct cleanup *cleanups;
1967 char *symname = NULL;
1968 char *filename = DEV_TTY;
1969 struct objfile *objfile;
1970 struct partial_symtab *ps;
1977 print-psymbols takes an output file name and optional symbol file name"));
1979 argv = gdb_buildargv (args);
1980 cleanups = make_cleanup_freeargv (argv);
1982 if (argv[0] != NULL)
1985 /* If a second arg is supplied, it is a source file name to match on. */
1986 if (argv[1] != NULL)
1992 filename = tilde_expand (filename);
1993 make_cleanup (xfree, filename);
1995 outfile = gdb_fopen (filename, FOPEN_WT);
1996 if (outfile == NULL)
1997 perror_with_name (filename);
1998 make_cleanup_ui_file_delete (outfile);
2000 ALL_OBJFILES (objfile)
2002 fprintf_filtered (outfile, "\nPartial symtabs for objfile %s\n",
2003 objfile_name (objfile));
2005 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
2008 if (symname == NULL || filename_cmp (symname, ps->filename) == 0)
2010 dump_psymtab (objfile, ps, outfile);
2011 dump_psymtab_addrmap (objfile, ps, outfile);
2015 /* If we're printing all symbols dump the full addrmap. */
2017 if (symname == NULL)
2019 fprintf_filtered (outfile, "\n");
2020 dump_psymtab_addrmap (objfile, NULL, outfile);
2024 do_cleanups (cleanups);
2027 /* List all the partial symbol tables whose names match REGEXP (optional). */
2030 maintenance_info_psymtabs (char *regexp, int from_tty)
2032 struct program_space *pspace;
2033 struct objfile *objfile;
2038 ALL_PSPACES (pspace)
2039 ALL_PSPACE_OBJFILES (pspace, objfile)
2041 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2042 struct partial_symtab *psymtab;
2044 /* We don't want to print anything for this objfile until we
2045 actually find a symtab whose name matches. */
2046 int printed_objfile_start = 0;
2048 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab)
2053 || re_exec (psymtab->filename))
2055 if (! printed_objfile_start)
2057 printf_filtered ("{ objfile %s ", objfile_name (objfile));
2059 printf_filtered ("((struct objfile *) %s)\n",
2060 host_address_to_string (objfile));
2061 printed_objfile_start = 1;
2064 printf_filtered (" { psymtab %s ", psymtab->filename);
2066 printf_filtered ("((struct partial_symtab *) %s)\n",
2067 host_address_to_string (psymtab));
2069 printf_filtered (" readin %s\n",
2070 psymtab->readin ? "yes" : "no");
2071 printf_filtered (" fullname %s\n",
2073 ? psymtab->fullname : "(null)");
2074 printf_filtered (" text addresses ");
2075 fputs_filtered (paddress (gdbarch, psymtab->textlow),
2077 printf_filtered (" -- ");
2078 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
2080 printf_filtered ("\n");
2081 printf_filtered (" psymtabs_addrmap_supported %s\n",
2082 (psymtab->psymtabs_addrmap_supported
2084 printf_filtered (" globals ");
2085 if (psymtab->n_global_syms)
2087 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2088 host_address_to_string (objfile->global_psymbols.list
2089 + psymtab->globals_offset),
2090 psymtab->n_global_syms);
2093 printf_filtered ("(none)\n");
2094 printf_filtered (" statics ");
2095 if (psymtab->n_static_syms)
2097 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2098 host_address_to_string (objfile->static_psymbols.list
2099 + psymtab->statics_offset),
2100 psymtab->n_static_syms);
2103 printf_filtered ("(none)\n");
2104 printf_filtered (" dependencies ");
2105 if (psymtab->number_of_dependencies)
2109 printf_filtered ("{\n");
2110 for (i = 0; i < psymtab->number_of_dependencies; i++)
2112 struct partial_symtab *dep = psymtab->dependencies[i];
2114 /* Note the string concatenation there --- no comma. */
2115 printf_filtered (" psymtab %s "
2116 "((struct partial_symtab *) %s)\n",
2118 host_address_to_string (dep));
2120 printf_filtered (" }\n");
2123 printf_filtered ("(none)\n");
2124 printf_filtered (" }\n");
2128 if (printed_objfile_start)
2129 printf_filtered ("}\n");
2133 /* Check consistency of currently expanded psymtabs vs symtabs. */
2136 maintenance_check_psymtabs (char *ignore, int from_tty)
2139 struct partial_symbol **psym;
2140 struct compunit_symtab *cust = NULL;
2141 struct partial_symtab *ps;
2142 const struct blockvector *bv;
2143 struct objfile *objfile;
2147 ALL_PSYMTABS (objfile, ps)
2149 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2151 /* We don't call psymtab_to_symtab here because that may cause symtab
2152 expansion. When debugging a problem it helps if checkers leave
2153 things unchanged. */
2154 cust = ps->compunit_symtab;
2156 /* First do some checks that don't require the associated symtab. */
2157 if (ps->texthigh < ps->textlow)
2159 printf_filtered ("Psymtab ");
2160 puts_filtered (ps->filename);
2161 printf_filtered (" covers bad range ");
2162 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2163 printf_filtered (" - ");
2164 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2165 printf_filtered ("\n");
2169 /* Now do checks requiring the associated symtab. */
2172 bv = COMPUNIT_BLOCKVECTOR (cust);
2173 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2174 psym = objfile->static_psymbols.list + ps->statics_offset;
2175 length = ps->n_static_syms;
2178 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2179 SYMBOL_DOMAIN (*psym));
2182 printf_filtered ("Static symbol `");
2183 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2184 printf_filtered ("' only found in ");
2185 puts_filtered (ps->filename);
2186 printf_filtered (" psymtab\n");
2190 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
2191 psym = objfile->global_psymbols.list + ps->globals_offset;
2192 length = ps->n_global_syms;
2195 sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
2196 SYMBOL_DOMAIN (*psym));
2199 printf_filtered ("Global symbol `");
2200 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
2201 printf_filtered ("' only found in ");
2202 puts_filtered (ps->filename);
2203 printf_filtered (" psymtab\n");
2207 if (ps->texthigh != 0
2208 && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)))
2210 printf_filtered ("Psymtab ");
2211 puts_filtered (ps->filename);
2212 printf_filtered (" covers ");
2213 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
2214 printf_filtered (" - ");
2215 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
2216 printf_filtered (" but symtab covers only ");
2217 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
2218 printf_filtered (" - ");
2219 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
2220 printf_filtered ("\n");
2227 extern initialize_file_ftype _initialize_psymtab;
2230 _initialize_psymtab (void)
2232 add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
2233 Print dump of current partial symbol definitions.\n\
2234 Entries in the partial symbol table are dumped to file OUTFILE.\n\
2235 If a SOURCE file is specified, dump only that file's partial symbols."),
2236 &maintenanceprintlist);
2238 add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
2239 List the partial symbol tables for all object files.\n\
2240 This does not include information about individual partial symbols,\n\
2241 just the symbol table structures themselves."),
2242 &maintenanceinfolist);
2244 add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
2246 Check consistency of currently expanded psymtabs versus symtabs."),