1 /* Partial symbol tables.
3 Copyright (C) 2009, 2010 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/>. */
24 #include "gdb_assert.h"
26 #include "filenames.h"
33 #include "readline/readline.h"
34 #include "gdb_regex.h"
37 #define DEV_TTY "/dev/tty"
40 /* A fast way to get from a psymtab to its symtab (after the first time). */
41 #define PSYMTAB_TO_SYMTAB(pst) \
42 ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
44 /* Lookup a partial symbol. */
45 static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
49 static char *psymtab_to_fullname (struct partial_symtab *ps);
51 static struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *,
53 struct obj_section *);
55 static struct partial_symbol *fixup_psymbol_section (struct partial_symbol
57 struct objfile *objfile);
59 static struct symtab *psymtab_to_symtab (struct partial_symtab *pst);
61 /* Lookup the partial symbol table of a source file named NAME.
62 *If* there is no '/' in the name, a match after a '/'
63 in the psymtab filename will also work. */
65 static struct partial_symtab *
66 lookup_partial_symtab (struct objfile *objfile, const char *name,
67 const char *full_path, const char *real_path)
69 struct partial_symtab *pst;
71 ALL_OBJFILE_PSYMTABS (objfile, pst)
73 if (FILENAME_CMP (name, pst->filename) == 0)
78 /* If the user gave us an absolute path, try to find the file in
79 this symtab and use its absolute path. */
80 if (full_path != NULL)
82 psymtab_to_fullname (pst);
83 if (pst->fullname != NULL
84 && FILENAME_CMP (full_path, pst->fullname) == 0)
90 if (real_path != NULL)
93 psymtab_to_fullname (pst);
94 if (pst->fullname != NULL)
96 rp = gdb_realpath (pst->fullname);
97 make_cleanup (xfree, rp);
99 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
106 /* Now, search for a matching tail (only if name doesn't have any dirs) */
108 if (lbasename (name) == name)
109 ALL_OBJFILE_PSYMTABS (objfile, pst)
111 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
119 lookup_symtab_via_partial_symtab (struct objfile *objfile, const char *name,
120 const char *full_path, const char *real_path,
121 struct symtab **result)
123 struct partial_symtab *ps;
125 ps = lookup_partial_symtab (objfile, name, full_path, real_path);
130 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
133 *result = PSYMTAB_TO_SYMTAB (ps);
137 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
138 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
140 static struct partial_symtab *
141 find_pc_sect_psymtab_closer (CORE_ADDR pc, struct obj_section *section,
142 struct partial_symtab *pst,
143 struct minimal_symbol *msymbol)
145 struct objfile *objfile = pst->objfile;
146 struct partial_symtab *tpst;
147 struct partial_symtab *best_pst = pst;
148 CORE_ADDR best_addr = pst->textlow;
150 /* An objfile that has its functions reordered might have
151 many partial symbol tables containing the PC, but
152 we want the partial symbol table that contains the
153 function containing the PC. */
154 if (!(objfile->flags & OBJF_REORDERED) &&
155 section == 0) /* can't validate section this way */
161 /* The code range of partial symtabs sometimes overlap, so, in
162 the loop below, we need to check all partial symtabs and
163 find the one that fits better for the given PC address. We
164 select the partial symtab that contains a symbol whose
165 address is closest to the PC address. By closest we mean
166 that find_pc_sect_symbol returns the symbol with address
167 that is closest and still less than the given PC. */
168 for (tpst = pst; tpst != NULL; tpst = tpst->next)
170 if (pc >= tpst->textlow && pc < tpst->texthigh)
172 struct partial_symbol *p;
175 /* NOTE: This assumes that every psymbol has a
176 corresponding msymbol, which is not necessarily
177 true; the debug info might be much richer than the
178 object's symbol table. */
179 p = find_pc_sect_psymbol (tpst, pc, section);
181 && SYMBOL_VALUE_ADDRESS (p)
182 == SYMBOL_VALUE_ADDRESS (msymbol))
185 /* Also accept the textlow value of a psymtab as a
186 "symbol", to provide some support for partial
187 symbol tables with line information but no debug
188 symbols (e.g. those produced by an assembler). */
190 this_addr = SYMBOL_VALUE_ADDRESS (p);
192 this_addr = tpst->textlow;
194 /* Check whether it is closer than our current
195 BEST_ADDR. Since this symbol address is
196 necessarily lower or equal to PC, the symbol closer
197 to PC is the symbol which address is the highest.
198 This way we return the psymtab which contains such
199 best match symbol. This can help in cases where the
200 symbol information/debuginfo is not complete, like
201 for instance on IRIX6 with gcc, where no debug info
202 is emitted for statics. (See also the nodebug.exp
204 if (this_addr > best_addr)
206 best_addr = this_addr;
214 /* Find which partial symtab contains PC and SECTION. Return 0 if
215 none. We return the psymtab that contains a symbol whose address
216 exactly matches PC, or, if we cannot find an exact match, the
217 psymtab that contains a symbol whose address is closest to PC. */
218 static struct partial_symtab *
219 find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
220 struct obj_section *section,
221 struct minimal_symbol *msymbol)
223 struct partial_symtab *pst;
225 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
226 than the later used TEXTLOW/TEXTHIGH one. */
228 if (objfile->psymtabs_addrmap != NULL)
230 pst = addrmap_find (objfile->psymtabs_addrmap, pc);
233 /* FIXME: addrmaps currently do not handle overlayed sections,
234 so fall back to the non-addrmap case if we're debugging
235 overlays and the addrmap returned the wrong section. */
236 if (overlay_debugging && msymbol && section)
238 struct partial_symbol *p;
240 /* NOTE: This assumes that every psymbol has a
241 corresponding msymbol, which is not necessarily
242 true; the debug info might be much richer than the
243 object's symbol table. */
244 p = find_pc_sect_psymbol (pst, pc, section);
246 || SYMBOL_VALUE_ADDRESS (p)
247 != SYMBOL_VALUE_ADDRESS (msymbol))
251 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
252 PSYMTABS_ADDRMAP we used has already the best 1-byte
253 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
254 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
263 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
264 which still have no corresponding full SYMTABs read. But it is not
265 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
268 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
269 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
270 debug info type in single OBJFILE. */
272 ALL_OBJFILE_PSYMTABS (objfile, pst)
273 if (pc >= pst->textlow && pc < pst->texthigh)
275 struct partial_symtab *best_pst;
277 best_pst = find_pc_sect_psymtab_closer (pc, section, pst, msymbol);
278 if (best_pst != NULL)
285 static struct symtab *
286 find_pc_sect_symtab_from_partial (struct objfile *objfile,
287 struct minimal_symbol *msymbol,
288 CORE_ADDR pc, struct obj_section *section,
291 struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
295 if (warn_if_readin && ps->readin)
296 /* Might want to error() here (in case symtab is corrupt and
297 will cause a core dump), but maybe we can successfully
298 continue, so let's not. */
300 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
301 paddress (get_objfile_arch (ps->objfile), pc));
302 return PSYMTAB_TO_SYMTAB (ps);
307 /* Find which partial symbol within a psymtab matches PC and SECTION.
310 static struct partial_symbol *
311 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
312 struct obj_section *section)
314 struct partial_symbol *best = NULL, *p, **pp;
317 gdb_assert (psymtab != NULL);
319 /* Cope with programs that start at address 0 */
320 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
322 /* Search the global symbols as well as the static symbols, so that
323 find_pc_partial_function doesn't use a minimal symbol and thus
324 cache a bad endaddr. */
325 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
326 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
327 < psymtab->n_global_syms);
331 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
332 && SYMBOL_CLASS (p) == LOC_BLOCK
333 && pc >= SYMBOL_VALUE_ADDRESS (p)
334 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
335 || (psymtab->textlow == 0
336 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
338 if (section) /* match on a specific section */
340 fixup_psymbol_section (p, psymtab->objfile);
341 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section))
344 best_pc = SYMBOL_VALUE_ADDRESS (p);
349 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
350 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
351 < psymtab->n_static_syms);
355 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
356 && SYMBOL_CLASS (p) == LOC_BLOCK
357 && pc >= SYMBOL_VALUE_ADDRESS (p)
358 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
359 || (psymtab->textlow == 0
360 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
362 if (section) /* match on a specific section */
364 fixup_psymbol_section (p, psymtab->objfile);
365 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section))
368 best_pc = SYMBOL_VALUE_ADDRESS (p);
376 static struct partial_symbol *
377 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
384 if (SYMBOL_OBJ_SECTION (psym))
387 gdb_assert (objfile);
389 switch (SYMBOL_CLASS (psym))
394 addr = SYMBOL_VALUE_ADDRESS (psym);
397 /* Nothing else will be listed in the minsyms -- no use looking
402 fixup_section (&psym->ginfo, addr, objfile);
407 static struct symtab *
408 lookup_symbol_aux_psymtabs (struct objfile *objfile,
409 int block_index, const char *name,
410 const domain_enum domain)
412 struct partial_symtab *ps;
413 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
415 ALL_OBJFILE_PSYMTABS (objfile, ps)
417 if (!ps->readin && lookup_partial_symbol (ps, name, psymtab_index, domain))
418 return PSYMTAB_TO_SYMTAB (ps);
424 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
425 Check the global symbols if GLOBAL, the static symbols if not. */
427 static struct partial_symbol *
428 lookup_partial_symbol (struct partial_symtab *pst, const char *name,
429 int global, domain_enum domain)
431 struct partial_symbol **start, **psym;
432 struct partial_symbol **top, **real_top, **bottom, **center;
433 int length = (global ? pst->n_global_syms : pst->n_static_syms);
434 int do_linear_search = 1;
441 pst->objfile->global_psymbols.list + pst->globals_offset :
442 pst->objfile->static_psymbols.list + pst->statics_offset);
444 if (global) /* This means we can use a binary search. */
446 do_linear_search = 0;
448 /* Binary search. This search is guaranteed to end with center
449 pointing at the earliest partial symbol whose name might be
450 correct. At that point *all* partial symbols with an
451 appropriate name will be checked against the correct
455 top = start + length - 1;
459 center = bottom + (top - bottom) / 2;
461 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
462 if (!do_linear_search
463 && (SYMBOL_LANGUAGE (*center) == language_java))
465 do_linear_search = 1;
467 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0)
476 if (!(top == bottom))
477 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
479 while (top <= real_top
480 && SYMBOL_MATCHES_SEARCH_NAME (*top, name))
482 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
483 SYMBOL_DOMAIN (*top), domain))
489 /* Can't use a binary search or else we found during the binary search that
490 we should also do a linear search. */
492 if (do_linear_search)
494 for (psym = start; psym < start + length; psym++)
496 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
497 SYMBOL_DOMAIN (*psym), domain)
498 && SYMBOL_MATCHES_SEARCH_NAME (*psym, name))
506 /* Get the symbol table that corresponds to a partial_symtab.
507 This is fast after the first time you do it. In fact, there
508 is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
511 static struct symtab *
512 psymtab_to_symtab (struct partial_symtab *pst)
514 /* If it's been looked up before, return it. */
518 /* If it has not yet been read in, read it. */
521 struct cleanup *back_to = increment_reading_symtab ();
523 (*pst->read_symtab) (pst);
524 do_cleanups (back_to);
531 relocate_psymtabs (struct objfile *objfile,
532 struct section_offsets *new_offsets,
533 struct section_offsets *delta)
535 struct partial_symbol **psym;
536 struct partial_symtab *p;
538 ALL_OBJFILE_PSYMTABS (objfile, p)
540 p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
541 p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
544 for (psym = objfile->global_psymbols.list;
545 psym < objfile->global_psymbols.next;
548 fixup_psymbol_section (*psym, objfile);
549 if (SYMBOL_SECTION (*psym) >= 0)
550 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
551 SYMBOL_SECTION (*psym));
553 for (psym = objfile->static_psymbols.list;
554 psym < objfile->static_psymbols.next;
557 fixup_psymbol_section (*psym, objfile);
558 if (SYMBOL_SECTION (*psym) >= 0)
559 SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
560 SYMBOL_SECTION (*psym));
564 static struct symtab *
565 find_last_source_symtab_from_partial (struct objfile *ofp)
567 struct partial_symtab *ps;
568 struct partial_symtab *cs_pst = 0;
570 ALL_OBJFILE_PSYMTABS (ofp, ps)
572 const char *name = ps->filename;
573 int len = strlen (name);
575 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
576 || strcmp (name, "<<C++-namespaces>>") == 0)))
584 internal_error (__FILE__, __LINE__,
585 _("select_source_symtab: "
586 "readin pst found and no symtabs."));
589 return PSYMTAB_TO_SYMTAB (cs_pst);
595 forget_cached_source_info_partial (struct objfile *objfile)
597 struct partial_symtab *pst;
599 ALL_OBJFILE_PSYMTABS (objfile, pst)
601 if (pst->fullname != NULL)
603 xfree (pst->fullname);
604 pst->fullname = NULL;
610 print_partial_symbols (struct gdbarch *gdbarch,
611 struct partial_symbol **p, int count, char *what,
612 struct ui_file *outfile)
614 fprintf_filtered (outfile, " %s partial symbols:\n", what);
617 fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
618 if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
620 fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
622 fputs_filtered (", ", outfile);
623 switch (SYMBOL_DOMAIN (*p))
626 fputs_filtered ("undefined domain, ", outfile);
629 /* This is the usual thing -- don't print it */
632 fputs_filtered ("struct domain, ", outfile);
635 fputs_filtered ("label domain, ", outfile);
638 fputs_filtered ("<invalid domain>, ", outfile);
641 switch (SYMBOL_CLASS (*p))
644 fputs_filtered ("undefined", outfile);
647 fputs_filtered ("constant int", outfile);
650 fputs_filtered ("static", outfile);
653 fputs_filtered ("register", outfile);
656 fputs_filtered ("pass by value", outfile);
659 fputs_filtered ("pass by reference", outfile);
661 case LOC_REGPARM_ADDR:
662 fputs_filtered ("register address parameter", outfile);
665 fputs_filtered ("stack parameter", outfile);
668 fputs_filtered ("type", outfile);
671 fputs_filtered ("label", outfile);
674 fputs_filtered ("function", outfile);
676 case LOC_CONST_BYTES:
677 fputs_filtered ("constant bytes", outfile);
680 fputs_filtered ("unresolved", outfile);
682 case LOC_OPTIMIZED_OUT:
683 fputs_filtered ("optimized out", outfile);
686 fputs_filtered ("computed at runtime", outfile);
689 fputs_filtered ("<invalid location>", outfile);
692 fputs_filtered (", ", outfile);
693 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
694 fprintf_filtered (outfile, "\n");
700 dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
701 struct ui_file *outfile)
703 struct gdbarch *gdbarch = get_objfile_arch (objfile);
706 fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
708 fprintf_filtered (outfile, "(object ");
709 gdb_print_host_address (psymtab, outfile);
710 fprintf_filtered (outfile, ")\n\n");
711 fprintf_unfiltered (outfile, " Read from object file %s (",
713 gdb_print_host_address (objfile, outfile);
714 fprintf_unfiltered (outfile, ")\n");
718 fprintf_filtered (outfile,
719 " Full symtab was read (at ");
720 gdb_print_host_address (psymtab->symtab, outfile);
721 fprintf_filtered (outfile, " by function at ");
722 gdb_print_host_address (psymtab->read_symtab, outfile);
723 fprintf_filtered (outfile, ")\n");
726 fprintf_filtered (outfile, " Relocate symbols by ");
727 for (i = 0; i < psymtab->objfile->num_sections; ++i)
730 fprintf_filtered (outfile, ", ");
732 fputs_filtered (paddress (gdbarch,
733 ANOFFSET (psymtab->section_offsets, i)),
736 fprintf_filtered (outfile, "\n");
738 fprintf_filtered (outfile, " Symbols cover text addresses ");
739 fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
740 fprintf_filtered (outfile, "-");
741 fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
742 fprintf_filtered (outfile, "\n");
743 fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
744 psymtab->number_of_dependencies);
745 for (i = 0; i < psymtab->number_of_dependencies; i++)
747 fprintf_filtered (outfile, " %d ", i);
748 gdb_print_host_address (psymtab->dependencies[i], outfile);
749 fprintf_filtered (outfile, " %s\n",
750 psymtab->dependencies[i]->filename);
752 if (psymtab->n_global_syms > 0)
754 print_partial_symbols (gdbarch,
755 objfile->global_psymbols.list
756 + psymtab->globals_offset,
757 psymtab->n_global_syms, "Global", outfile);
759 if (psymtab->n_static_syms > 0)
761 print_partial_symbols (gdbarch,
762 objfile->static_psymbols.list
763 + psymtab->statics_offset,
764 psymtab->n_static_syms, "Static", outfile);
766 fprintf_filtered (outfile, "\n");
770 print_psymtab_stats_for_objfile (struct objfile *objfile)
773 struct partial_symtab *ps;
776 ALL_OBJFILE_PSYMTABS (objfile, ps)
781 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
785 dump_psymtabs_for_objfile (struct objfile *objfile)
787 struct partial_symtab *psymtab;
789 if (objfile->psymtabs)
791 printf_filtered ("Psymtabs:\n");
792 for (psymtab = objfile->psymtabs;
794 psymtab = psymtab->next)
796 printf_filtered ("%s at ",
798 gdb_print_host_address (psymtab, gdb_stdout);
799 printf_filtered (", ");
800 if (psymtab->objfile != objfile)
802 printf_filtered ("NOT ON CHAIN! ");
806 printf_filtered ("\n\n");
810 /* Look through the partial symtabs for all symbols which begin
811 by matching FUNC_NAME. Make sure we read that symbol table in. */
814 read_symtabs_for_function (struct objfile *objfile, const char *func_name)
816 struct partial_symtab *ps;
818 ALL_OBJFILE_PSYMTABS (objfile, ps)
823 if ((lookup_partial_symbol (ps, func_name, 1, VAR_DOMAIN)
825 || (lookup_partial_symbol (ps, func_name, 0, VAR_DOMAIN)
827 psymtab_to_symtab (ps);
832 expand_partial_symbol_tables (struct objfile *objfile)
834 struct partial_symtab *psymtab;
836 for (psymtab = objfile->psymtabs;
838 psymtab = psymtab->next)
840 psymtab_to_symtab (psymtab);
845 read_psymtabs_with_filename (struct objfile *objfile, const char *filename)
847 struct partial_symtab *p;
849 ALL_OBJFILE_PSYMTABS (objfile, p)
851 if (strcmp (filename, p->filename) == 0)
852 PSYMTAB_TO_SYMTAB (p);
857 map_symbol_names_psymtab (struct objfile *objfile,
858 void (*fun) (const char *, void *), void *data)
860 struct partial_symtab *ps;
862 ALL_OBJFILE_PSYMTABS (objfile, ps)
864 struct partial_symbol **psym;
866 /* If the psymtab's been read in we'll get it when we search
867 through the blockvector. */
871 for (psym = objfile->global_psymbols.list + ps->globals_offset;
872 psym < (objfile->global_psymbols.list + ps->globals_offset
873 + ps->n_global_syms);
876 /* If interrupted, then quit. */
878 (*fun) (SYMBOL_NATURAL_NAME (*psym), data);
881 for (psym = objfile->static_psymbols.list + ps->statics_offset;
882 psym < (objfile->static_psymbols.list + ps->statics_offset
883 + ps->n_static_syms);
887 (*fun) (SYMBOL_NATURAL_NAME (*psym), data);
893 map_symbol_filenames_psymtab (struct objfile *objfile,
894 void (*fun) (const char *, const char *,
898 struct partial_symtab *ps;
900 ALL_OBJFILE_PSYMTABS (objfile, ps)
902 const char *fullname;
907 fullname = psymtab_to_fullname (ps);
908 (*fun) (fullname, ps->filename, data);
912 int find_and_open_source (const char *filename,
916 /* Finds the fullname that a partial_symtab represents.
918 If this functions finds the fullname, it will save it in ps->fullname
919 and it will also return the value.
921 If this function fails to find the file that this partial_symtab represents,
922 NULL will be returned and ps->fullname will be set to NULL. */
924 psymtab_to_fullname (struct partial_symtab *ps)
931 /* Don't check ps->fullname here, the file could have been
932 deleted/moved/..., look for it again */
933 r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
945 find_symbol_file_from_partial (struct objfile *objfile, const char *name)
947 struct partial_symtab *pst;
949 ALL_OBJFILE_PSYMTABS (objfile, pst)
951 if (lookup_partial_symbol (pst, name, 1, VAR_DOMAIN))
952 return pst->filename;
957 /* Look, in partial_symtab PST, for symbol NAME in given namespace.
958 Check the global symbols if GLOBAL, the static symbols if not.
959 Do wild-card match if WILD. */
961 static struct partial_symbol *
962 ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name,
963 int global, domain_enum namespace, int wild,
964 int (*wild_match) (const char *, int, const char *),
965 int (*is_name_suffix) (const char *))
967 struct partial_symbol **start;
968 int name_len = strlen (name);
969 int length = (global ? pst->n_global_syms : pst->n_static_syms);
978 pst->objfile->global_psymbols.list + pst->globals_offset :
979 pst->objfile->static_psymbols.list + pst->statics_offset);
983 for (i = 0; i < length; i += 1)
985 struct partial_symbol *psym = start[i];
987 if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
988 SYMBOL_DOMAIN (psym), namespace)
989 && (*wild_match) (name, name_len, SYMBOL_LINKAGE_NAME (psym)))
1004 int M = (U + i) >> 1;
1005 struct partial_symbol *psym = start[M];
1007 if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0])
1009 else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0])
1011 else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0)
1022 struct partial_symbol *psym = start[i];
1024 if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
1025 SYMBOL_DOMAIN (psym), namespace))
1027 int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len);
1035 && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym)
1050 int M = (U + i) >> 1;
1051 struct partial_symbol *psym = start[M];
1053 if (SYMBOL_LINKAGE_NAME (psym)[0] < '_')
1055 else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_')
1057 else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0)
1068 struct partial_symbol *psym = start[i];
1070 if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
1071 SYMBOL_DOMAIN (psym), namespace))
1075 cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0];
1078 cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5);
1080 cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5,
1090 && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym)
1101 map_ada_symtabs (struct objfile *objfile,
1102 int (*wild_match) (const char *, int, const char *),
1103 int (*is_name_suffix) (const char *),
1104 void (*callback) (struct objfile *, struct symtab *, void *),
1105 const char *name, int global, domain_enum namespace, int wild,
1108 struct partial_symtab *ps;
1110 ALL_OBJFILE_PSYMTABS (objfile, ps)
1114 || ada_lookup_partial_symbol (ps, name, global, namespace, wild,
1115 wild_match, is_name_suffix))
1117 struct symtab *s = PSYMTAB_TO_SYMTAB (ps);
1119 if (s == NULL || !s->primary)
1121 (*callback) (objfile, s, data);
1127 expand_symtabs_matching_via_partial (struct objfile *objfile,
1128 int (*file_matcher) (const char *, void *),
1129 int (*name_matcher) (const char *, void *),
1133 struct partial_symtab *ps;
1135 ALL_OBJFILE_PSYMTABS (objfile, ps)
1137 struct partial_symbol **psym;
1138 struct partial_symbol **bound, **gbound, **sbound;
1144 if (! (*file_matcher) (ps->filename, data))
1147 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
1148 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
1151 /* Go through all of the symbols stored in a partial
1152 symtab in one loop. */
1153 psym = objfile->global_psymbols.list + ps->globals_offset;
1158 if (bound == gbound && ps->n_static_syms != 0)
1160 psym = objfile->static_psymbols.list + ps->statics_offset;
1171 if ((*name_matcher) (SYMBOL_NATURAL_NAME (*psym), data)
1172 && ((kind == VARIABLES_DOMAIN
1173 && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
1174 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
1175 || (kind == FUNCTIONS_DOMAIN
1176 && SYMBOL_CLASS (*psym) == LOC_BLOCK)
1177 || (kind == TYPES_DOMAIN
1178 && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)))
1180 PSYMTAB_TO_SYMTAB (ps);
1190 objfile_has_psyms (struct objfile *objfile)
1192 return objfile->psymtabs != NULL;
1195 const struct quick_symbol_functions psym_functions =
1198 find_last_source_symtab_from_partial,
1199 forget_cached_source_info_partial,
1200 lookup_symtab_via_partial_symtab,
1201 lookup_symbol_aux_psymtabs,
1202 print_psymtab_stats_for_objfile,
1203 dump_psymtabs_for_objfile,
1205 read_symtabs_for_function,
1206 expand_partial_symbol_tables,
1207 read_psymtabs_with_filename,
1208 find_symbol_file_from_partial,
1210 expand_symtabs_matching_via_partial,
1211 find_pc_sect_symtab_from_partial,
1212 map_symbol_names_psymtab,
1213 map_symbol_filenames_psymtab
1218 /* This compares two partial symbols by names, using strcmp_iw_ordered
1219 for the comparison. */
1222 compare_psymbols (const void *s1p, const void *s2p)
1224 struct partial_symbol *const *s1 = s1p;
1225 struct partial_symbol *const *s2 = s2p;
1227 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
1228 SYMBOL_SEARCH_NAME (*s2));
1232 sort_pst_symbols (struct partial_symtab *pst)
1234 /* Sort the global list; don't sort the static list */
1236 qsort (pst->objfile->global_psymbols.list + pst->globals_offset,
1237 pst->n_global_syms, sizeof (struct partial_symbol *),
1241 /* Allocate and partially fill a partial symtab. It will be
1242 completely filled at the end of the symbol list.
1244 FILENAME is the name of the symbol-file we are reading from. */
1246 struct partial_symtab *
1247 start_psymtab_common (struct objfile *objfile,
1248 struct section_offsets *section_offsets,
1249 const char *filename,
1250 CORE_ADDR textlow, struct partial_symbol **global_syms,
1251 struct partial_symbol **static_syms)
1253 struct partial_symtab *psymtab;
1255 psymtab = allocate_psymtab (filename, objfile);
1256 psymtab->section_offsets = section_offsets;
1257 psymtab->textlow = textlow;
1258 psymtab->texthigh = psymtab->textlow; /* default */
1259 psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
1260 psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
1264 /* Helper function, initialises partial symbol structure and stashes
1265 it into objfile's bcache. Note that our caching mechanism will
1266 use all fields of struct partial_symbol to determine hash value of the
1267 structure. In other words, having two symbols with the same name but
1268 different domain (or address) is possible and correct. */
1270 static const struct partial_symbol *
1271 add_psymbol_to_bcache (char *name, int namelength, int copy_name,
1273 enum address_class class,
1274 long val, /* Value as a long */
1275 CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
1276 enum language language, struct objfile *objfile,
1279 /* psymbol is static so that there will be no uninitialized gaps in the
1280 structure which might contain random data, causing cache misses in
1282 static struct partial_symbol psymbol;
1284 /* However, we must ensure that the entire 'value' field has been
1285 zeroed before assigning to it, because an assignment may not
1286 write the entire field. */
1287 memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value));
1288 /* val and coreaddr are mutually exclusive, one of them *will* be zero */
1291 SYMBOL_VALUE (&psymbol) = val;
1295 SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
1297 SYMBOL_SECTION (&psymbol) = 0;
1298 SYMBOL_LANGUAGE (&psymbol) = language;
1299 PSYMBOL_DOMAIN (&psymbol) = domain;
1300 PSYMBOL_CLASS (&psymbol) = class;
1302 SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
1304 /* Stash the partial symbol away in the cache */
1305 return bcache_full (&psymbol, sizeof (struct partial_symbol),
1306 objfile->psymbol_cache, added);
1309 /* Helper function, adds partial symbol to the given partial symbol
1313 append_psymbol_to_list (struct psymbol_allocation_list *list,
1314 const struct partial_symbol *psym,
1315 struct objfile *objfile)
1317 if (list->next >= list->list + list->size)
1318 extend_psymbol_list (list, objfile);
1319 *list->next++ = (struct partial_symbol *) psym;
1320 OBJSTAT (objfile, n_psyms++);
1323 /* Add a symbol with a long value to a psymtab.
1324 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1325 Return the partial symbol that has been added. */
1327 /* NOTE: carlton/2003-09-11: The reason why we return the partial
1328 symbol is so that callers can get access to the symbol's demangled
1329 name, which they don't have any cheap way to determine otherwise.
1330 (Currenly, dwarf2read.c is the only file who uses that information,
1331 though it's possible that other readers might in the future.)
1332 Elena wasn't thrilled about that, and I don't blame her, but we
1333 couldn't come up with a better way to get that information. If
1334 it's needed in other situations, we could consider breaking up
1335 SYMBOL_SET_NAMES to provide access to the demangled name lookup
1338 const struct partial_symbol *
1339 add_psymbol_to_list (char *name, int namelength, int copy_name,
1341 enum address_class class,
1342 struct psymbol_allocation_list *list,
1343 long val, /* Value as a long */
1344 CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
1345 enum language language, struct objfile *objfile)
1347 const struct partial_symbol *psym;
1351 /* Stash the partial symbol away in the cache */
1352 psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class,
1353 val, coreaddr, language, objfile, &added);
1355 /* Do not duplicate global partial symbols. */
1356 if (list == &objfile->global_psymbols
1360 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1361 append_psymbol_to_list (list, psym, objfile);
1365 /* Initialize storage for partial symbols. */
1368 init_psymbol_list (struct objfile *objfile, int total_symbols)
1370 /* Free any previously allocated psymbol lists. */
1372 if (objfile->global_psymbols.list)
1374 xfree (objfile->global_psymbols.list);
1376 if (objfile->static_psymbols.list)
1378 xfree (objfile->static_psymbols.list);
1381 /* Current best guess is that approximately a twentieth
1382 of the total symbols (in a debugging file) are global or static
1385 objfile->global_psymbols.size = total_symbols / 10;
1386 objfile->static_psymbols.size = total_symbols / 10;
1388 if (objfile->global_psymbols.size > 0)
1390 objfile->global_psymbols.next =
1391 objfile->global_psymbols.list = (struct partial_symbol **)
1392 xmalloc ((objfile->global_psymbols.size
1393 * sizeof (struct partial_symbol *)));
1395 if (objfile->static_psymbols.size > 0)
1397 objfile->static_psymbols.next =
1398 objfile->static_psymbols.list = (struct partial_symbol **)
1399 xmalloc ((objfile->static_psymbols.size
1400 * sizeof (struct partial_symbol *)));
1404 struct partial_symtab *
1405 allocate_psymtab (const char *filename, struct objfile *objfile)
1407 struct partial_symtab *psymtab;
1409 if (objfile->free_psymtabs)
1411 psymtab = objfile->free_psymtabs;
1412 objfile->free_psymtabs = psymtab->next;
1415 psymtab = (struct partial_symtab *)
1416 obstack_alloc (&objfile->objfile_obstack,
1417 sizeof (struct partial_symtab));
1419 memset (psymtab, 0, sizeof (struct partial_symtab));
1420 psymtab->filename = obsavestring (filename, strlen (filename),
1421 &objfile->objfile_obstack);
1422 psymtab->symtab = NULL;
1424 /* Prepend it to the psymtab list for the objfile it belongs to.
1425 Psymtabs are searched in most recent inserted -> least recent
1428 psymtab->objfile = objfile;
1429 psymtab->next = objfile->psymtabs;
1430 objfile->psymtabs = psymtab;
1436 discard_psymtab (struct partial_symtab *pst)
1438 struct partial_symtab **prev_pst;
1441 Empty psymtabs happen as a result of header files which don't
1442 have any symbols in them. There can be a lot of them. But this
1443 check is wrong, in that a psymtab with N_SLINE entries but
1444 nothing else is not empty, but we don't realize that. Fixing
1445 that without slowing things down might be tricky. */
1447 /* First, snip it out of the psymtab chain */
1449 prev_pst = &(pst->objfile->psymtabs);
1450 while ((*prev_pst) != pst)
1451 prev_pst = &((*prev_pst)->next);
1452 (*prev_pst) = pst->next;
1454 /* Next, put it on a free list for recycling */
1456 pst->next = pst->objfile->free_psymtabs;
1457 pst->objfile->free_psymtabs = pst;
1460 /* Increase the space allocated for LISTP, which is probably
1461 global_psymbols or static_psymbols. This space will eventually
1462 be freed in free_objfile(). */
1465 extend_psymbol_list (struct psymbol_allocation_list *listp,
1466 struct objfile *objfile)
1470 if (listp->size == 0)
1473 listp->list = (struct partial_symbol **)
1474 xmalloc (new_size * sizeof (struct partial_symbol *));
1478 new_size = listp->size * 2;
1479 listp->list = (struct partial_symbol **)
1480 xrealloc ((char *) listp->list,
1481 new_size * sizeof (struct partial_symbol *));
1483 /* Next assumes we only went one over. Should be good if
1484 program works correctly */
1485 listp->next = listp->list + listp->size;
1486 listp->size = new_size;
1492 maintenance_print_psymbols (char *args, int from_tty)
1495 struct ui_file *outfile;
1496 struct cleanup *cleanups;
1497 char *symname = NULL;
1498 char *filename = DEV_TTY;
1499 struct objfile *objfile;
1500 struct partial_symtab *ps;
1506 error (_("print-psymbols takes an output file name and optional symbol file name"));
1508 argv = gdb_buildargv (args);
1509 cleanups = make_cleanup_freeargv (argv);
1511 if (argv[0] != NULL)
1514 /* If a second arg is supplied, it is a source file name to match on */
1515 if (argv[1] != NULL)
1521 filename = tilde_expand (filename);
1522 make_cleanup (xfree, filename);
1524 outfile = gdb_fopen (filename, FOPEN_WT);
1526 perror_with_name (filename);
1527 make_cleanup_ui_file_delete (outfile);
1530 ALL_PSYMTABS (objfile, ps)
1531 if (symname == NULL || strcmp (symname, ps->filename) == 0)
1532 dump_psymtab (objfile, ps, outfile);
1534 do_cleanups (cleanups);
1537 /* List all the partial symbol tables whose names match REGEXP (optional). */
1539 maintenance_info_psymtabs (char *regexp, int from_tty)
1541 struct program_space *pspace;
1542 struct objfile *objfile;
1547 ALL_PSPACES (pspace)
1548 ALL_PSPACE_OBJFILES (pspace, objfile)
1550 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1551 struct partial_symtab *psymtab;
1553 /* We don't want to print anything for this objfile until we
1554 actually find a symtab whose name matches. */
1555 int printed_objfile_start = 0;
1557 ALL_OBJFILE_PSYMTABS (objfile, psymtab)
1562 || re_exec (psymtab->filename))
1564 if (! printed_objfile_start)
1566 printf_filtered ("{ objfile %s ", objfile->name);
1568 printf_filtered ("((struct objfile *) %s)\n",
1569 host_address_to_string (objfile));
1570 printed_objfile_start = 1;
1573 printf_filtered (" { psymtab %s ", psymtab->filename);
1575 printf_filtered ("((struct partial_symtab *) %s)\n",
1576 host_address_to_string (psymtab));
1578 printf_filtered (" readin %s\n",
1579 psymtab->readin ? "yes" : "no");
1580 printf_filtered (" fullname %s\n",
1581 psymtab->fullname ? psymtab->fullname : "(null)");
1582 printf_filtered (" text addresses ");
1583 fputs_filtered (paddress (gdbarch, psymtab->textlow),
1585 printf_filtered (" -- ");
1586 fputs_filtered (paddress (gdbarch, psymtab->texthigh),
1588 printf_filtered ("\n");
1589 printf_filtered (" globals ");
1590 if (psymtab->n_global_syms)
1592 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
1593 host_address_to_string (psymtab->objfile->global_psymbols.list
1594 + psymtab->globals_offset),
1595 psymtab->n_global_syms);
1598 printf_filtered ("(none)\n");
1599 printf_filtered (" statics ");
1600 if (psymtab->n_static_syms)
1602 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
1603 host_address_to_string (psymtab->objfile->static_psymbols.list
1604 + psymtab->statics_offset),
1605 psymtab->n_static_syms);
1608 printf_filtered ("(none)\n");
1609 printf_filtered (" dependencies ");
1610 if (psymtab->number_of_dependencies)
1614 printf_filtered ("{\n");
1615 for (i = 0; i < psymtab->number_of_dependencies; i++)
1617 struct partial_symtab *dep = psymtab->dependencies[i];
1619 /* Note the string concatenation there --- no comma. */
1620 printf_filtered (" psymtab %s "
1621 "((struct partial_symtab *) %s)\n",
1623 host_address_to_string (dep));
1625 printf_filtered (" }\n");
1628 printf_filtered ("(none)\n");
1629 printf_filtered (" }\n");
1633 if (printed_objfile_start)
1634 printf_filtered ("}\n");
1638 /* Check consistency of psymtabs and symtabs. */
1641 maintenance_check_symtabs (char *ignore, int from_tty)
1644 struct partial_symbol **psym;
1645 struct symtab *s = NULL;
1646 struct partial_symtab *ps;
1647 struct blockvector *bv;
1648 struct objfile *objfile;
1652 ALL_PSYMTABS (objfile, ps)
1654 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1656 s = PSYMTAB_TO_SYMTAB (ps);
1659 bv = BLOCKVECTOR (s);
1660 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1661 psym = ps->objfile->static_psymbols.list + ps->statics_offset;
1662 length = ps->n_static_syms;
1665 sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
1666 SYMBOL_DOMAIN (*psym));
1669 printf_filtered ("Static symbol `");
1670 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
1671 printf_filtered ("' only found in ");
1672 puts_filtered (ps->filename);
1673 printf_filtered (" psymtab\n");
1677 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1678 psym = ps->objfile->global_psymbols.list + ps->globals_offset;
1679 length = ps->n_global_syms;
1682 sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
1683 SYMBOL_DOMAIN (*psym));
1686 printf_filtered ("Global symbol `");
1687 puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
1688 printf_filtered ("' only found in ");
1689 puts_filtered (ps->filename);
1690 printf_filtered (" psymtab\n");
1694 if (ps->texthigh < ps->textlow)
1696 printf_filtered ("Psymtab ");
1697 puts_filtered (ps->filename);
1698 printf_filtered (" covers bad range ");
1699 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
1700 printf_filtered (" - ");
1701 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
1702 printf_filtered ("\n");
1705 if (ps->texthigh == 0)
1707 if (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b))
1709 printf_filtered ("Psymtab ");
1710 puts_filtered (ps->filename);
1711 printf_filtered (" covers ");
1712 fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
1713 printf_filtered (" - ");
1714 fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
1715 printf_filtered (" but symtab covers only ");
1716 fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
1717 printf_filtered (" - ");
1718 fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
1719 printf_filtered ("\n");
1727 map_partial_symbol_names (void (*fun) (const char *, void *), void *data)
1729 struct objfile *objfile;
1731 ALL_OBJFILES (objfile)
1734 objfile->sf->qf->map_symbol_names (objfile, fun, data);
1739 map_partial_symbol_filenames (void (*fun) (const char *, const char *,
1743 struct objfile *objfile;
1745 ALL_OBJFILES (objfile)
1748 objfile->sf->qf->map_symbol_filenames (objfile, fun, data);