1 /* Partial symbol tables.
3 Copyright (C) 2009-2017 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"
41 struct bcache
*bcache
;
44 static struct partial_symbol
*match_partial_symbol (struct objfile
*,
45 struct partial_symtab
*,
47 const char *, domain_enum
,
48 symbol_compare_ftype
*,
49 symbol_compare_ftype
*);
51 static struct partial_symbol
*lookup_partial_symbol (struct objfile
*,
52 struct partial_symtab
*,
56 static const char *psymtab_to_fullname (struct partial_symtab
*ps
);
58 static struct partial_symbol
*find_pc_sect_psymbol (struct objfile
*,
59 struct partial_symtab
*,
61 struct obj_section
*);
63 static void fixup_psymbol_section (struct partial_symbol
*psym
,
64 struct objfile
*objfile
);
66 static struct compunit_symtab
*psymtab_to_symtab (struct objfile
*objfile
,
67 struct partial_symtab
*pst
);
69 /* Ensure that the partial symbols for OBJFILE have been loaded. This
70 function always returns its argument, as a convenience. */
73 require_partial_symbols (struct objfile
*objfile
, int verbose
)
75 if ((objfile
->flags
& OBJF_PSYMTABS_READ
) == 0)
77 objfile
->flags
|= OBJF_PSYMTABS_READ
;
79 if (objfile
->sf
->sym_read_psymbols
)
83 printf_unfiltered (_("Reading symbols from %s..."),
84 objfile_name (objfile
));
85 gdb_flush (gdb_stdout
);
87 (*objfile
->sf
->sym_read_psymbols
) (objfile
);
90 if (!objfile_has_symbols (objfile
))
93 printf_unfiltered (_("(no debugging symbols found)..."));
97 printf_unfiltered (_("done.\n"));
105 /* Traverse all psymtabs in one objfile, requiring that the psymtabs
108 #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \
109 for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \
113 /* We want to make sure this file always requires psymtabs. */
115 #undef ALL_OBJFILE_PSYMTABS
117 /* Traverse all psymtabs in all objfiles. */
119 #define ALL_PSYMTABS(objfile, p) \
120 ALL_OBJFILES (objfile) \
121 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
123 /* Helper function for psym_map_symtabs_matching_filename that
124 expands the symtabs and calls the iterator. */
127 partial_map_expand_apply (struct objfile
*objfile
,
129 const char *real_path
,
130 struct partial_symtab
*pst
,
131 gdb::function_view
<bool (symtab
*)> callback
)
133 struct compunit_symtab
*last_made
= objfile
->compunit_symtabs
;
135 /* Shared psymtabs should never be seen here. Instead they should
136 be handled properly by the caller. */
137 gdb_assert (pst
->user
== NULL
);
139 /* Don't visit already-expanded psymtabs. */
143 /* This may expand more than one symtab, and we want to iterate over
145 psymtab_to_symtab (objfile
, pst
);
147 return iterate_over_some_symtabs (name
, real_path
, objfile
->compunit_symtabs
,
148 last_made
, callback
);
151 /* Psymtab version of map_symtabs_matching_filename. See its definition in
152 the definition of quick_symbol_functions in symfile.h. */
155 psym_map_symtabs_matching_filename
156 (struct objfile
*objfile
,
158 const char *real_path
,
159 gdb::function_view
<bool (symtab
*)> callback
)
161 struct partial_symtab
*pst
;
162 const char *name_basename
= lbasename (name
);
164 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, pst
)
166 /* We can skip shared psymtabs here, because any file name will be
167 attached to the unshared psymtab. */
168 if (pst
->user
!= NULL
)
171 /* Anonymous psymtabs don't have a file name. */
175 if (compare_filenames_for_search (pst
->filename
, name
))
177 if (partial_map_expand_apply (objfile
, name
, real_path
,
183 /* Before we invoke realpath, which can get expensive when many
184 files are involved, do a quick comparison of the basenames. */
185 if (! basenames_may_differ
186 && FILENAME_CMP (name_basename
, lbasename (pst
->filename
)) != 0)
189 if (compare_filenames_for_search (psymtab_to_fullname (pst
), name
))
191 if (partial_map_expand_apply (objfile
, name
, real_path
,
197 /* If the user gave us an absolute path, try to find the file in
198 this symtab and use its absolute path. */
199 if (real_path
!= NULL
)
201 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
202 gdb_assert (IS_ABSOLUTE_PATH (name
));
203 if (filename_cmp (psymtab_to_fullname (pst
), real_path
) == 0)
205 if (partial_map_expand_apply (objfile
, name
, real_path
,
216 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
217 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
219 static struct partial_symtab
*
220 find_pc_sect_psymtab_closer (struct objfile
*objfile
,
221 CORE_ADDR pc
, struct obj_section
*section
,
222 struct partial_symtab
*pst
,
223 struct bound_minimal_symbol msymbol
)
225 struct partial_symtab
*tpst
;
226 struct partial_symtab
*best_pst
= pst
;
227 CORE_ADDR best_addr
= pst
->textlow
;
229 gdb_assert (!pst
->psymtabs_addrmap_supported
);
231 /* An objfile that has its functions reordered might have
232 many partial symbol tables containing the PC, but
233 we want the partial symbol table that contains the
234 function containing the PC. */
235 if (!(objfile
->flags
& OBJF_REORDERED
)
236 && section
== NULL
) /* Can't validate section this way. */
239 if (msymbol
.minsym
== NULL
)
242 /* The code range of partial symtabs sometimes overlap, so, in
243 the loop below, we need to check all partial symtabs and
244 find the one that fits better for the given PC address. We
245 select the partial symtab that contains a symbol whose
246 address is closest to the PC address. By closest we mean
247 that find_pc_sect_symbol returns the symbol with address
248 that is closest and still less than the given PC. */
249 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
251 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
253 struct partial_symbol
*p
;
256 /* NOTE: This assumes that every psymbol has a
257 corresponding msymbol, which is not necessarily
258 true; the debug info might be much richer than the
259 object's symbol table. */
260 p
= find_pc_sect_psymbol (objfile
, tpst
, pc
, section
);
262 && (SYMBOL_VALUE_ADDRESS (p
)
263 == BMSYMBOL_VALUE_ADDRESS (msymbol
)))
266 /* Also accept the textlow value of a psymtab as a
267 "symbol", to provide some support for partial
268 symbol tables with line information but no debug
269 symbols (e.g. those produced by an assembler). */
271 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
273 this_addr
= tpst
->textlow
;
275 /* Check whether it is closer than our current
276 BEST_ADDR. Since this symbol address is
277 necessarily lower or equal to PC, the symbol closer
278 to PC is the symbol which address is the highest.
279 This way we return the psymtab which contains such
280 best match symbol. This can help in cases where the
281 symbol information/debuginfo is not complete, like
282 for instance on IRIX6 with gcc, where no debug info
283 is emitted for statics. (See also the nodebug.exp
285 if (this_addr
> best_addr
)
287 best_addr
= this_addr
;
295 /* Find which partial symtab contains PC and SECTION. Return NULL if
296 none. We return the psymtab that contains a symbol whose address
297 exactly matches PC, or, if we cannot find an exact match, the
298 psymtab that contains a symbol whose address is closest to PC. */
300 static struct partial_symtab
*
301 find_pc_sect_psymtab (struct objfile
*objfile
, CORE_ADDR pc
,
302 struct obj_section
*section
,
303 struct bound_minimal_symbol msymbol
)
305 struct partial_symtab
*pst
;
307 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
308 than the later used TEXTLOW/TEXTHIGH one. */
310 if (objfile
->psymtabs_addrmap
!= NULL
)
312 pst
= ((struct partial_symtab
*)
313 addrmap_find (objfile
->psymtabs_addrmap
, pc
));
316 /* FIXME: addrmaps currently do not handle overlayed sections,
317 so fall back to the non-addrmap case if we're debugging
318 overlays and the addrmap returned the wrong section. */
319 if (overlay_debugging
&& msymbol
.minsym
!= NULL
&& section
!= NULL
)
321 struct partial_symbol
*p
;
323 /* NOTE: This assumes that every psymbol has a
324 corresponding msymbol, which is not necessarily
325 true; the debug info might be much richer than the
326 object's symbol table. */
327 p
= find_pc_sect_psymbol (objfile
, pst
, pc
, section
);
329 || (SYMBOL_VALUE_ADDRESS (p
)
330 != BMSYMBOL_VALUE_ADDRESS (msymbol
)))
334 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
335 PSYMTABS_ADDRMAP we used has already the best 1-byte
336 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
337 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
346 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
347 which still have no corresponding full SYMTABs read. But it is not
348 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
351 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
352 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
353 debug info type in single OBJFILE. */
355 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, pst
)
356 if (!pst
->psymtabs_addrmap_supported
357 && pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
359 struct partial_symtab
*best_pst
;
361 best_pst
= find_pc_sect_psymtab_closer (objfile
, pc
, section
, pst
,
363 if (best_pst
!= NULL
)
370 /* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
371 the definition of quick_symbol_functions in symfile.h. */
373 static struct compunit_symtab
*
374 psym_find_pc_sect_compunit_symtab (struct objfile
*objfile
,
375 struct bound_minimal_symbol msymbol
,
377 struct obj_section
*section
,
380 struct partial_symtab
*ps
= find_pc_sect_psymtab (objfile
, pc
, section
,
384 if (warn_if_readin
&& ps
->readin
)
385 /* Might want to error() here (in case symtab is corrupt and
386 will cause a core dump), but maybe we can successfully
387 continue, so let's not. */
389 (Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
390 paddress (get_objfile_arch (objfile
), pc
));
391 psymtab_to_symtab (objfile
, ps
);
392 return ps
->compunit_symtab
;
397 /* Find which partial symbol within a psymtab matches PC and SECTION.
398 Return NULL if none. */
400 static struct partial_symbol
*
401 find_pc_sect_psymbol (struct objfile
*objfile
,
402 struct partial_symtab
*psymtab
, CORE_ADDR pc
,
403 struct obj_section
*section
)
405 struct partial_symbol
*best
= NULL
, *p
, **pp
;
408 gdb_assert (psymtab
!= NULL
);
410 /* Cope with programs that start at address 0. */
411 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
413 /* Search the global symbols as well as the static symbols, so that
414 find_pc_partial_function doesn't use a minimal symbol and thus
415 cache a bad endaddr. */
416 for (pp
= objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
417 (pp
- (objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
418 < psymtab
->n_global_syms
);
422 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
423 && PSYMBOL_CLASS (p
) == LOC_BLOCK
424 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
425 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
426 || (psymtab
->textlow
== 0
427 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
429 if (section
!= NULL
) /* Match on a specific section. */
431 fixup_psymbol_section (p
, objfile
);
432 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, p
),
436 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
441 for (pp
= objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
442 (pp
- (objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
443 < psymtab
->n_static_syms
);
447 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
448 && PSYMBOL_CLASS (p
) == LOC_BLOCK
449 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
450 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
451 || (psymtab
->textlow
== 0
452 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
454 if (section
!= NULL
) /* Match on a specific section. */
456 fixup_psymbol_section (p
, objfile
);
457 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, p
),
461 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
470 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
477 if (SYMBOL_SECTION (psym
) >= 0)
480 gdb_assert (objfile
);
482 switch (PSYMBOL_CLASS (psym
))
487 addr
= SYMBOL_VALUE_ADDRESS (psym
);
490 /* Nothing else will be listed in the minsyms -- no use looking
495 fixup_section (&psym
->ginfo
, addr
, objfile
);
498 /* Psymtab version of lookup_symbol. See its definition in
499 the definition of quick_symbol_functions in symfile.h. */
501 static struct compunit_symtab
*
502 psym_lookup_symbol (struct objfile
*objfile
,
503 int block_index
, const char *name
,
504 const domain_enum domain
)
506 struct partial_symtab
*ps
;
507 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
508 struct compunit_symtab
*stab_best
= NULL
;
510 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
512 if (!ps
->readin
&& lookup_partial_symbol (objfile
, ps
, name
,
513 psymtab_index
, domain
))
515 struct symbol
*sym
, *with_opaque
= NULL
;
516 struct compunit_symtab
*stab
= psymtab_to_symtab (objfile
, ps
);
517 /* Note: While psymtab_to_symtab can return NULL if the partial symtab
518 is empty, we can assume it won't here because lookup_partial_symbol
520 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (stab
);
521 struct block
*block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
523 sym
= block_find_symbol (block
, name
, domain
,
524 block_find_non_opaque_type_preferred
,
527 /* Some caution must be observed with overloaded functions
528 and methods, since the index will not contain any overload
529 information (but NAME might contain it). */
532 && strcmp_iw (SYMBOL_SEARCH_NAME (sym
), name
) == 0)
534 if (with_opaque
!= NULL
535 && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque
), name
) == 0)
538 /* Keep looking through other psymtabs. */
545 /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
546 the global block of PST if GLOBAL, and otherwise the static block.
547 MATCH is the comparison operation that returns true iff MATCH (s,
548 NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
549 non-null, the symbols in the block are assumed to be ordered
550 according to it (allowing binary search). It must be compatible
551 with MATCH. Returns the symbol, if found, and otherwise NULL. */
553 static struct partial_symbol
*
554 match_partial_symbol (struct objfile
*objfile
,
555 struct partial_symtab
*pst
, int global
,
556 const char *name
, domain_enum domain
,
557 symbol_compare_ftype
*match
,
558 symbol_compare_ftype
*ordered_compare
)
560 struct partial_symbol
**start
, **psym
;
561 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
562 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
563 int do_linear_search
= 1;
568 objfile
->global_psymbols
.list
+ pst
->globals_offset
:
569 objfile
->static_psymbols
.list
+ pst
->statics_offset
);
571 if (global
&& ordered_compare
) /* Can use a binary search. */
573 do_linear_search
= 0;
575 /* Binary search. This search is guaranteed to end with center
576 pointing at the earliest partial symbol whose name might be
577 correct. At that point *all* partial symbols with an
578 appropriate name will be checked against the correct
582 top
= start
+ length
- 1;
586 center
= bottom
+ (top
- bottom
) / 2;
587 gdb_assert (center
< top
);
588 if (ordered_compare (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
593 gdb_assert (top
== bottom
);
595 while (top
<= real_top
596 && match (SYMBOL_SEARCH_NAME (*top
), name
) == 0)
598 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top
),
599 SYMBOL_DOMAIN (*top
), domain
))
605 /* Can't use a binary search or else we found during the binary search that
606 we should also do a linear search. */
608 if (do_linear_search
)
610 for (psym
= start
; psym
< start
+ length
; psym
++)
612 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym
),
613 SYMBOL_DOMAIN (*psym
), domain
)
614 && match (SYMBOL_SEARCH_NAME (*psym
), name
) == 0)
622 /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do
623 not contain any method/function instance information (since this would
624 force reading type information while reading psymtabs). Therefore,
625 if NAME contains overload information, it must be stripped before searching
628 The caller is responsible for freeing the return result. */
631 psymtab_search_name (const char *name
)
633 switch (current_language
->la_language
)
637 if (strchr (name
, '('))
639 char *ret
= cp_remove_params (name
);
651 return xstrdup (name
);
654 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
655 Check the global symbols if GLOBAL, the static symbols if not. */
657 static struct partial_symbol
*
658 lookup_partial_symbol (struct objfile
*objfile
,
659 struct partial_symtab
*pst
, const char *name
,
660 int global
, domain_enum domain
)
662 struct partial_symbol
**start
, **psym
;
663 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
664 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
665 int do_linear_search
= 1;
667 struct cleanup
*cleanup
;
672 search_name
= psymtab_search_name (name
);
673 cleanup
= make_cleanup (xfree
, search_name
);
675 objfile
->global_psymbols
.list
+ pst
->globals_offset
:
676 objfile
->static_psymbols
.list
+ pst
->statics_offset
);
678 if (global
) /* This means we can use a binary search. */
680 do_linear_search
= 0;
682 /* Binary search. This search is guaranteed to end with center
683 pointing at the earliest partial symbol whose name might be
684 correct. At that point *all* partial symbols with an
685 appropriate name will be checked against the correct
689 top
= start
+ length
- 1;
693 center
= bottom
+ (top
- bottom
) / 2;
695 internal_error (__FILE__
, __LINE__
,
696 _("failed internal consistency check"));
697 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
),
707 if (!(top
== bottom
))
708 internal_error (__FILE__
, __LINE__
,
709 _("failed internal consistency check"));
711 /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
712 search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
713 while (top
>= start
&& SYMBOL_MATCHES_SEARCH_NAME (*top
, search_name
))
716 /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
719 while (top
<= real_top
&& SYMBOL_MATCHES_SEARCH_NAME (*top
, search_name
))
721 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top
),
722 SYMBOL_DOMAIN (*top
), domain
))
724 do_cleanups (cleanup
);
731 /* Can't use a binary search or else we found during the binary search that
732 we should also do a linear search. */
734 if (do_linear_search
)
736 for (psym
= start
; psym
< start
+ length
; psym
++)
738 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym
),
739 SYMBOL_DOMAIN (*psym
), domain
)
740 && SYMBOL_MATCHES_SEARCH_NAME (*psym
, search_name
))
742 do_cleanups (cleanup
);
748 do_cleanups (cleanup
);
752 /* Get the symbol table that corresponds to a partial_symtab.
753 This is fast after the first time you do it.
754 The result will be NULL if the primary symtab has no symbols,
755 which can happen. Otherwise the result is the primary symtab
756 that contains PST. */
758 static struct compunit_symtab
*
759 psymtab_to_symtab (struct objfile
*objfile
, struct partial_symtab
*pst
)
761 /* If it is a shared psymtab, find an unshared psymtab that includes
762 it. Any such psymtab will do. */
763 while (pst
->user
!= NULL
)
766 /* If it's been looked up before, return it. */
767 if (pst
->compunit_symtab
)
768 return pst
->compunit_symtab
;
770 /* If it has not yet been read in, read it. */
773 struct cleanup
*back_to
= increment_reading_symtab ();
775 (*pst
->read_symtab
) (pst
, objfile
);
776 do_cleanups (back_to
);
779 return pst
->compunit_symtab
;
782 /* Psymtab version of relocate. See its definition in
783 the definition of quick_symbol_functions in symfile.h. */
786 psym_relocate (struct objfile
*objfile
,
787 const struct section_offsets
*new_offsets
,
788 const struct section_offsets
*delta
)
790 struct partial_symbol
**psym
;
791 struct partial_symtab
*p
;
793 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, p
)
795 p
->textlow
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
796 p
->texthigh
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
799 for (psym
= objfile
->global_psymbols
.list
;
800 psym
< objfile
->global_psymbols
.next
;
803 fixup_psymbol_section (*psym
, objfile
);
804 if (SYMBOL_SECTION (*psym
) >= 0)
805 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
806 SYMBOL_SECTION (*psym
));
808 for (psym
= objfile
->static_psymbols
.list
;
809 psym
< objfile
->static_psymbols
.next
;
812 fixup_psymbol_section (*psym
, objfile
);
813 if (SYMBOL_SECTION (*psym
) >= 0)
814 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
815 SYMBOL_SECTION (*psym
));
819 /* Psymtab version of find_last_source_symtab. See its definition in
820 the definition of quick_symbol_functions in symfile.h. */
822 static struct symtab
*
823 psym_find_last_source_symtab (struct objfile
*ofp
)
825 struct partial_symtab
*ps
;
826 struct partial_symtab
*cs_pst
= NULL
;
828 ALL_OBJFILE_PSYMTABS_REQUIRED (ofp
, ps
)
830 const char *name
= ps
->filename
;
831 int len
= strlen (name
);
833 if (!(len
> 2 && (strcmp (&name
[len
- 2], ".h") == 0
834 || strcmp (name
, "<<C++-namespaces>>") == 0)))
842 internal_error (__FILE__
, __LINE__
,
843 _("select_source_symtab: "
844 "readin pst found and no symtabs."));
848 struct compunit_symtab
*cust
= psymtab_to_symtab (ofp
, cs_pst
);
852 return compunit_primary_filetab (cust
);
858 /* Psymtab version of forget_cached_source_info. See its definition in
859 the definition of quick_symbol_functions in symfile.h. */
862 psym_forget_cached_source_info (struct objfile
*objfile
)
864 struct partial_symtab
*pst
;
866 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, pst
)
868 if (pst
->fullname
!= NULL
)
870 xfree (pst
->fullname
);
871 pst
->fullname
= NULL
;
877 print_partial_symbols (struct gdbarch
*gdbarch
,
878 struct partial_symbol
**p
, int count
, char *what
,
879 struct ui_file
*outfile
)
881 fprintf_filtered (outfile
, " %s partial symbols:\n", what
);
885 fprintf_filtered (outfile
, " `%s'", SYMBOL_LINKAGE_NAME (*p
));
886 if (SYMBOL_DEMANGLED_NAME (*p
) != NULL
)
888 fprintf_filtered (outfile
, " `%s'", SYMBOL_DEMANGLED_NAME (*p
));
890 fputs_filtered (", ", outfile
);
891 switch (SYMBOL_DOMAIN (*p
))
894 fputs_filtered ("undefined domain, ", outfile
);
897 /* This is the usual thing -- don't print it. */
900 fputs_filtered ("struct domain, ", outfile
);
903 fputs_filtered ("label domain, ", outfile
);
906 fputs_filtered ("<invalid domain>, ", outfile
);
909 switch (PSYMBOL_CLASS (*p
))
912 fputs_filtered ("undefined", outfile
);
915 fputs_filtered ("constant int", outfile
);
918 fputs_filtered ("static", outfile
);
921 fputs_filtered ("register", outfile
);
924 fputs_filtered ("pass by value", outfile
);
927 fputs_filtered ("pass by reference", outfile
);
929 case LOC_REGPARM_ADDR
:
930 fputs_filtered ("register address parameter", outfile
);
933 fputs_filtered ("stack parameter", outfile
);
936 fputs_filtered ("type", outfile
);
939 fputs_filtered ("label", outfile
);
942 fputs_filtered ("function", outfile
);
944 case LOC_CONST_BYTES
:
945 fputs_filtered ("constant bytes", outfile
);
948 fputs_filtered ("unresolved", outfile
);
950 case LOC_OPTIMIZED_OUT
:
951 fputs_filtered ("optimized out", outfile
);
954 fputs_filtered ("computed at runtime", outfile
);
957 fputs_filtered ("<invalid location>", outfile
);
960 fputs_filtered (", ", outfile
);
961 fputs_filtered (paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (*p
)), outfile
);
962 fprintf_filtered (outfile
, "\n");
968 dump_psymtab (struct objfile
*objfile
, struct partial_symtab
*psymtab
,
969 struct ui_file
*outfile
)
971 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
974 if (psymtab
->anonymous
)
976 fprintf_filtered (outfile
, "\nAnonymous partial symtab (%s) ",
981 fprintf_filtered (outfile
, "\nPartial symtab for source file %s ",
984 fprintf_filtered (outfile
, "(object ");
985 gdb_print_host_address (psymtab
, outfile
);
986 fprintf_filtered (outfile
, ")\n\n");
987 fprintf_unfiltered (outfile
, " Read from object file %s (",
988 objfile_name (objfile
));
989 gdb_print_host_address (objfile
, outfile
);
990 fprintf_unfiltered (outfile
, ")\n");
994 fprintf_filtered (outfile
,
995 " Full symtab was read (at ");
996 gdb_print_host_address (psymtab
->compunit_symtab
, outfile
);
997 fprintf_filtered (outfile
, " by function at ");
998 gdb_print_host_address (psymtab
->read_symtab
, outfile
);
999 fprintf_filtered (outfile
, ")\n");
1002 fprintf_filtered (outfile
, " Symbols cover text addresses ");
1003 fputs_filtered (paddress (gdbarch
, psymtab
->textlow
), outfile
);
1004 fprintf_filtered (outfile
, "-");
1005 fputs_filtered (paddress (gdbarch
, psymtab
->texthigh
), outfile
);
1006 fprintf_filtered (outfile
, "\n");
1007 fprintf_filtered (outfile
, " Address map supported - %s.\n",
1008 psymtab
->psymtabs_addrmap_supported
? "yes" : "no");
1009 fprintf_filtered (outfile
, " Depends on %d other partial symtabs.\n",
1010 psymtab
->number_of_dependencies
);
1011 for (i
= 0; i
< psymtab
->number_of_dependencies
; i
++)
1013 fprintf_filtered (outfile
, " %d ", i
);
1014 gdb_print_host_address (psymtab
->dependencies
[i
], outfile
);
1015 fprintf_filtered (outfile
, " %s\n",
1016 psymtab
->dependencies
[i
]->filename
);
1018 if (psymtab
->user
!= NULL
)
1020 fprintf_filtered (outfile
, " Shared partial symtab with user ");
1021 gdb_print_host_address (psymtab
->user
, outfile
);
1022 fprintf_filtered (outfile
, "\n");
1024 if (psymtab
->n_global_syms
> 0)
1026 print_partial_symbols (gdbarch
,
1027 objfile
->global_psymbols
.list
1028 + psymtab
->globals_offset
,
1029 psymtab
->n_global_syms
, "Global", outfile
);
1031 if (psymtab
->n_static_syms
> 0)
1033 print_partial_symbols (gdbarch
,
1034 objfile
->static_psymbols
.list
1035 + psymtab
->statics_offset
,
1036 psymtab
->n_static_syms
, "Static", outfile
);
1038 fprintf_filtered (outfile
, "\n");
1041 /* Psymtab version of print_stats. See its definition in
1042 the definition of quick_symbol_functions in symfile.h. */
1045 psym_print_stats (struct objfile
*objfile
)
1048 struct partial_symtab
*ps
;
1051 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
1053 if (ps
->readin
== 0)
1056 printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i
);
1059 /* Psymtab version of dump. See its definition in
1060 the definition of quick_symbol_functions in symfile.h. */
1063 psym_dump (struct objfile
*objfile
)
1065 struct partial_symtab
*psymtab
;
1067 if (objfile
->psymtabs
)
1069 printf_filtered ("Psymtabs:\n");
1070 for (psymtab
= objfile
->psymtabs
;
1072 psymtab
= psymtab
->next
)
1074 printf_filtered ("%s at ",
1076 gdb_print_host_address (psymtab
, gdb_stdout
);
1077 printf_filtered (", ");
1080 printf_filtered ("\n\n");
1084 /* Psymtab version of expand_symtabs_for_function. See its definition in
1085 the definition of quick_symbol_functions in symfile.h. */
1088 psym_expand_symtabs_for_function (struct objfile
*objfile
,
1089 const char *func_name
)
1091 struct partial_symtab
*ps
;
1093 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
1098 if ((lookup_partial_symbol (objfile
, ps
, func_name
, 1, VAR_DOMAIN
)
1100 || (lookup_partial_symbol (objfile
, ps
, func_name
, 0, VAR_DOMAIN
)
1102 psymtab_to_symtab (objfile
, ps
);
1106 /* Psymtab version of expand_all_symtabs. See its definition in
1107 the definition of quick_symbol_functions in symfile.h. */
1110 psym_expand_all_symtabs (struct objfile
*objfile
)
1112 struct partial_symtab
*psymtab
;
1114 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, psymtab
)
1116 psymtab_to_symtab (objfile
, psymtab
);
1120 /* Psymtab version of expand_symtabs_with_fullname. See its definition in
1121 the definition of quick_symbol_functions in symfile.h. */
1124 psym_expand_symtabs_with_fullname (struct objfile
*objfile
,
1125 const char *fullname
)
1127 struct partial_symtab
*p
;
1129 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, p
)
1131 /* Anonymous psymtabs don't have a name of a source file. */
1135 /* psymtab_to_fullname tries to open the file which is slow.
1136 Don't call it if we know the basenames don't match. */
1137 if ((basenames_may_differ
1138 || filename_cmp (lbasename (fullname
), lbasename (p
->filename
)) == 0)
1139 && filename_cmp (fullname
, psymtab_to_fullname (p
)) == 0)
1140 psymtab_to_symtab (objfile
, p
);
1144 /* Psymtab version of map_symbol_filenames. See its definition in
1145 the definition of quick_symbol_functions in symfile.h. */
1148 psym_map_symbol_filenames (struct objfile
*objfile
,
1149 symbol_filename_ftype
*fun
, void *data
,
1152 struct partial_symtab
*ps
;
1154 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
1156 const char *fullname
;
1161 /* We can skip shared psymtabs here, because any file name will be
1162 attached to the unshared psymtab. */
1163 if (ps
->user
!= NULL
)
1166 /* Anonymous psymtabs don't have a file name. */
1172 fullname
= psymtab_to_fullname (ps
);
1175 (*fun
) (ps
->filename
, fullname
, data
);
1179 /* Finds the fullname that a partial_symtab represents.
1181 If this functions finds the fullname, it will save it in ps->fullname
1182 and it will also return the value.
1184 If this function fails to find the file that this partial_symtab represents,
1185 NULL will be returned and ps->fullname will be set to NULL. */
1188 psymtab_to_fullname (struct partial_symtab
*ps
)
1190 gdb_assert (!ps
->anonymous
);
1192 /* Use cached copy if we have it.
1193 We rely on forget_cached_source_info being called appropriately
1194 to handle cases like the file being moved. */
1195 if (ps
->fullname
== NULL
)
1197 int fd
= find_and_open_source (ps
->filename
, ps
->dirname
, &ps
->fullname
);
1204 struct cleanup
*back_to
;
1206 /* rewrite_source_path would be applied by find_and_open_source, we
1207 should report the pathname where GDB tried to find the file. */
1209 if (ps
->dirname
== NULL
|| IS_ABSOLUTE_PATH (ps
->filename
))
1210 fullname
= xstrdup (ps
->filename
);
1212 fullname
= concat (ps
->dirname
, SLASH_STRING
,
1213 ps
->filename
, (char *) NULL
);
1215 back_to
= make_cleanup (xfree
, fullname
);
1216 ps
->fullname
= rewrite_source_path (fullname
);
1217 if (ps
->fullname
== NULL
)
1218 ps
->fullname
= xstrdup (fullname
);
1219 do_cleanups (back_to
);
1223 return ps
->fullname
;
1226 /* For all symbols, s, in BLOCK that are in DOMAIN and match NAME
1227 according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
1228 BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
1229 ever returns non-zero, and otherwise returns 0. */
1232 map_block (const char *name
, domain_enum domain
, struct objfile
*objfile
,
1233 struct block
*block
,
1234 int (*callback
) (struct block
*, struct symbol
*, void *),
1235 void *data
, symbol_compare_ftype
*match
)
1237 struct block_iterator iter
;
1240 for (sym
= block_iter_match_first (block
, name
, match
, &iter
);
1241 sym
!= NULL
; sym
= block_iter_match_next (name
, match
, &iter
))
1243 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1244 SYMBOL_DOMAIN (sym
), domain
))
1246 if (callback (block
, sym
, data
))
1254 /* Psymtab version of map_matching_symbols. See its definition in
1255 the definition of quick_symbol_functions in symfile.h. */
1258 psym_map_matching_symbols (struct objfile
*objfile
,
1259 const char *name
, domain_enum domain
,
1261 int (*callback
) (struct block
*,
1262 struct symbol
*, void *),
1264 symbol_compare_ftype
*match
,
1265 symbol_compare_ftype
*ordered_compare
)
1267 const int block_kind
= global
? GLOBAL_BLOCK
: STATIC_BLOCK
;
1268 struct partial_symtab
*ps
;
1270 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
1274 || match_partial_symbol (objfile
, ps
, global
, name
, domain
, match
,
1277 struct compunit_symtab
*cust
= psymtab_to_symtab (objfile
, ps
);
1278 struct block
*block
;
1282 block
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), block_kind
);
1283 if (map_block (name
, domain
, objfile
, block
,
1284 callback
, data
, match
))
1286 if (callback (block
, NULL
, data
))
1292 /* A helper for psym_expand_symtabs_matching that handles searching
1293 included psymtabs. This returns true if a symbol is found, and
1294 false otherwise. It also updates the 'searched_flag' on the
1295 various psymtabs that it searches. */
1298 recursively_search_psymtabs
1299 (struct partial_symtab
*ps
, struct objfile
*objfile
, enum search_domain kind
,
1300 gdb::function_view
<expand_symtabs_symbol_matcher_ftype
> sym_matcher
)
1302 struct partial_symbol
**psym
;
1303 struct partial_symbol
**bound
, **gbound
, **sbound
;
1305 enum psymtab_search_status result
= PST_SEARCHED_AND_NOT_FOUND
;
1308 if (ps
->searched_flag
!= PST_NOT_SEARCHED
)
1309 return ps
->searched_flag
== PST_SEARCHED_AND_FOUND
;
1311 /* Recurse into shared psymtabs first, because they may have already
1312 been searched, and this could save some time. */
1313 for (i
= 0; i
< ps
->number_of_dependencies
; ++i
)
1317 /* Skip non-shared dependencies, these are handled elsewhere. */
1318 if (ps
->dependencies
[i
]->user
== NULL
)
1321 r
= recursively_search_psymtabs (ps
->dependencies
[i
],
1322 objfile
, kind
, sym_matcher
);
1325 ps
->searched_flag
= PST_SEARCHED_AND_FOUND
;
1330 gbound
= (objfile
->global_psymbols
.list
1331 + ps
->globals_offset
+ ps
->n_global_syms
);
1332 sbound
= (objfile
->static_psymbols
.list
1333 + ps
->statics_offset
+ ps
->n_static_syms
);
1336 /* Go through all of the symbols stored in a partial
1337 symtab in one loop. */
1338 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
1343 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
1345 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
1356 if ((kind
== ALL_DOMAIN
1357 || (kind
== VARIABLES_DOMAIN
1358 && PSYMBOL_CLASS (*psym
) != LOC_TYPEDEF
1359 && PSYMBOL_CLASS (*psym
) != LOC_BLOCK
)
1360 || (kind
== FUNCTIONS_DOMAIN
1361 && PSYMBOL_CLASS (*psym
) == LOC_BLOCK
)
1362 || (kind
== TYPES_DOMAIN
1363 && PSYMBOL_CLASS (*psym
) == LOC_TYPEDEF
))
1364 && sym_matcher (SYMBOL_SEARCH_NAME (*psym
)))
1366 /* Found a match, so notify our caller. */
1367 result
= PST_SEARCHED_AND_FOUND
;
1374 ps
->searched_flag
= result
;
1375 return result
== PST_SEARCHED_AND_FOUND
;
1378 /* Psymtab version of expand_symtabs_matching. See its definition in
1379 the definition of quick_symbol_functions in symfile.h. */
1382 psym_expand_symtabs_matching
1383 (struct objfile
*objfile
,
1384 gdb::function_view
<expand_symtabs_file_matcher_ftype
> file_matcher
,
1385 gdb::function_view
<expand_symtabs_symbol_matcher_ftype
> symbol_matcher
,
1386 gdb::function_view
<expand_symtabs_exp_notify_ftype
> expansion_notify
,
1387 enum search_domain kind
)
1389 struct partial_symtab
*ps
;
1391 /* Clear the search flags. */
1392 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
1394 ps
->searched_flag
= PST_NOT_SEARCHED
;
1397 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
1404 /* We skip shared psymtabs because file-matching doesn't apply
1405 to them; but we search them later in the loop. */
1406 if (ps
->user
!= NULL
)
1416 match
= file_matcher (ps
->filename
, false);
1419 /* Before we invoke realpath, which can get expensive when many
1420 files are involved, do a quick comparison of the basenames. */
1421 if (basenames_may_differ
1422 || file_matcher (lbasename (ps
->filename
), true))
1423 match
= file_matcher (psymtab_to_fullname (ps
), false);
1429 if (recursively_search_psymtabs (ps
, objfile
, kind
, symbol_matcher
))
1431 struct compunit_symtab
*symtab
=
1432 psymtab_to_symtab (objfile
, ps
);
1434 if (expansion_notify
!= NULL
)
1435 expansion_notify (symtab
);
1440 /* Psymtab version of has_symbols. See its definition in
1441 the definition of quick_symbol_functions in symfile.h. */
1444 psym_has_symbols (struct objfile
*objfile
)
1446 return objfile
->psymtabs
!= NULL
;
1449 const struct quick_symbol_functions psym_functions
=
1452 psym_find_last_source_symtab
,
1453 psym_forget_cached_source_info
,
1454 psym_map_symtabs_matching_filename
,
1459 psym_expand_symtabs_for_function
,
1460 psym_expand_all_symtabs
,
1461 psym_expand_symtabs_with_fullname
,
1462 psym_map_matching_symbols
,
1463 psym_expand_symtabs_matching
,
1464 psym_find_pc_sect_compunit_symtab
,
1465 psym_map_symbol_filenames
1470 /* This compares two partial symbols by names, using strcmp_iw_ordered
1471 for the comparison. */
1474 compare_psymbols (const void *s1p
, const void *s2p
)
1476 struct partial_symbol
*const *s1
= (struct partial_symbol
* const*) s1p
;
1477 struct partial_symbol
*const *s2
= (struct partial_symbol
* const*) s2p
;
1479 return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1
),
1480 SYMBOL_SEARCH_NAME (*s2
));
1484 sort_pst_symbols (struct objfile
*objfile
, struct partial_symtab
*pst
)
1486 /* Sort the global list; don't sort the static list. */
1488 qsort (objfile
->global_psymbols
.list
+ pst
->globals_offset
,
1489 pst
->n_global_syms
, sizeof (struct partial_symbol
*),
1493 /* Allocate and partially fill a partial symtab. It will be
1494 completely filled at the end of the symbol list.
1496 FILENAME is the name of the symbol-file we are reading from. */
1498 struct partial_symtab
*
1499 start_psymtab_common (struct objfile
*objfile
,
1500 const char *filename
,
1501 CORE_ADDR textlow
, struct partial_symbol
**global_syms
,
1502 struct partial_symbol
**static_syms
)
1504 struct partial_symtab
*psymtab
;
1506 psymtab
= allocate_psymtab (filename
, objfile
);
1507 psymtab
->textlow
= textlow
;
1508 psymtab
->texthigh
= psymtab
->textlow
; /* default */
1509 psymtab
->globals_offset
= global_syms
- objfile
->global_psymbols
.list
;
1510 psymtab
->statics_offset
= static_syms
- objfile
->static_psymbols
.list
;
1514 /* Perform "finishing up" operations of a partial symtab. */
1517 end_psymtab_common (struct objfile
*objfile
, struct partial_symtab
*pst
)
1520 = objfile
->global_psymbols
.next
- (objfile
->global_psymbols
.list
1521 + pst
->globals_offset
);
1523 = objfile
->static_psymbols
.next
- (objfile
->static_psymbols
.list
1524 + pst
->statics_offset
);
1526 sort_pst_symbols (objfile
, pst
);
1529 /* Calculate a hash code for the given partial symbol. The hash is
1530 calculated using the symbol's value, language, domain, class
1531 and name. These are the values which are set by
1532 add_psymbol_to_bcache. */
1534 static unsigned long
1535 psymbol_hash (const void *addr
, int length
)
1537 unsigned long h
= 0;
1538 struct partial_symbol
*psymbol
= (struct partial_symbol
*) addr
;
1539 unsigned int lang
= psymbol
->ginfo
.language
;
1540 unsigned int domain
= PSYMBOL_DOMAIN (psymbol
);
1541 unsigned int theclass
= PSYMBOL_CLASS (psymbol
);
1543 h
= hash_continue (&psymbol
->ginfo
.value
, sizeof (psymbol
->ginfo
.value
), h
);
1544 h
= hash_continue (&lang
, sizeof (unsigned int), h
);
1545 h
= hash_continue (&domain
, sizeof (unsigned int), h
);
1546 h
= hash_continue (&theclass
, sizeof (unsigned int), h
);
1547 h
= hash_continue (psymbol
->ginfo
.name
, strlen (psymbol
->ginfo
.name
), h
);
1552 /* Returns true if the symbol at addr1 equals the symbol at addr2.
1553 For the comparison this function uses a symbols value,
1554 language, domain, class and name. */
1557 psymbol_compare (const void *addr1
, const void *addr2
, int length
)
1559 struct partial_symbol
*sym1
= (struct partial_symbol
*) addr1
;
1560 struct partial_symbol
*sym2
= (struct partial_symbol
*) addr2
;
1562 return (memcmp (&sym1
->ginfo
.value
, &sym2
->ginfo
.value
,
1563 sizeof (sym1
->ginfo
.value
)) == 0
1564 && sym1
->ginfo
.language
== sym2
->ginfo
.language
1565 && PSYMBOL_DOMAIN (sym1
) == PSYMBOL_DOMAIN (sym2
)
1566 && PSYMBOL_CLASS (sym1
) == PSYMBOL_CLASS (sym2
)
1567 && sym1
->ginfo
.name
== sym2
->ginfo
.name
);
1570 /* Initialize a partial symbol bcache. */
1572 struct psymbol_bcache
*
1573 psymbol_bcache_init (void)
1575 struct psymbol_bcache
*bcache
= XCNEW (struct psymbol_bcache
);
1577 bcache
->bcache
= bcache_xmalloc (psymbol_hash
, psymbol_compare
);
1581 /* Free a partial symbol bcache. */
1584 psymbol_bcache_free (struct psymbol_bcache
*bcache
)
1589 bcache_xfree (bcache
->bcache
);
1593 /* Return the internal bcache of the psymbol_bcache BCACHE. */
1596 psymbol_bcache_get_bcache (struct psymbol_bcache
*bcache
)
1598 return bcache
->bcache
;
1601 /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
1602 symbol before, add a copy to BCACHE. In either case, return a pointer
1603 to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
1604 1 in case of new entry or 0 if returning an old entry. */
1606 static const struct partial_symbol
*
1607 psymbol_bcache_full (struct partial_symbol
*sym
,
1608 struct psymbol_bcache
*bcache
,
1611 return ((const struct partial_symbol
*)
1612 bcache_full (sym
, sizeof (struct partial_symbol
), bcache
->bcache
,
1616 /* Helper function, initialises partial symbol structure and stashes
1617 it into objfile's bcache. Note that our caching mechanism will
1618 use all fields of struct partial_symbol to determine hash value of the
1619 structure. In other words, having two symbols with the same name but
1620 different domain (or address) is possible and correct. */
1622 static const struct partial_symbol
*
1623 add_psymbol_to_bcache (const char *name
, int namelength
, int copy_name
,
1625 enum address_class theclass
,
1627 enum language language
, struct objfile
*objfile
,
1630 struct partial_symbol psymbol
;
1632 /* We must ensure that the entire struct has been zeroed before
1633 assigning to it, because an assignment may not touch some of the
1635 memset (&psymbol
, 0, sizeof (psymbol
));
1637 SYMBOL_VALUE_ADDRESS (&psymbol
) = coreaddr
;
1638 SYMBOL_SECTION (&psymbol
) = -1;
1639 SYMBOL_SET_LANGUAGE (&psymbol
, language
, &objfile
->objfile_obstack
);
1640 PSYMBOL_DOMAIN (&psymbol
) = domain
;
1641 PSYMBOL_CLASS (&psymbol
) = theclass
;
1643 SYMBOL_SET_NAMES (&psymbol
, name
, namelength
, copy_name
, objfile
);
1645 /* Stash the partial symbol away in the cache. */
1646 return psymbol_bcache_full (&psymbol
, objfile
->psymbol_cache
, added
);
1649 /* Increase the space allocated for LISTP, which is probably
1650 global_psymbols or static_psymbols. This space will eventually
1651 be freed in free_objfile(). */
1654 extend_psymbol_list (struct psymbol_allocation_list
*listp
,
1655 struct objfile
*objfile
)
1659 if (listp
->size
== 0)
1662 listp
->list
= XNEWVEC (struct partial_symbol
*, new_size
);
1666 new_size
= listp
->size
* 2;
1667 listp
->list
= (struct partial_symbol
**)
1668 xrealloc ((char *) listp
->list
,
1669 new_size
* sizeof (struct partial_symbol
*));
1671 /* Next assumes we only went one over. Should be good if
1672 program works correctly. */
1673 listp
->next
= listp
->list
+ listp
->size
;
1674 listp
->size
= new_size
;
1677 /* Helper function, adds partial symbol to the given partial symbol list. */
1680 append_psymbol_to_list (struct psymbol_allocation_list
*list
,
1681 const struct partial_symbol
*psym
,
1682 struct objfile
*objfile
)
1684 if (list
->next
>= list
->list
+ list
->size
)
1685 extend_psymbol_list (list
, objfile
);
1686 *list
->next
++ = (struct partial_symbol
*) psym
;
1687 OBJSTAT (objfile
, n_psyms
++);
1690 /* Add a symbol with a long value to a psymtab.
1691 Since one arg is a struct, we pass in a ptr and deref it (sigh).
1692 The only value we need to store for psyms is an address.
1693 For all other psyms pass zero for COREADDR.
1694 Return the partial symbol that has been added. */
1697 add_psymbol_to_list (const char *name
, int namelength
, int copy_name
,
1699 enum address_class theclass
,
1700 struct psymbol_allocation_list
*list
,
1702 enum language language
, struct objfile
*objfile
)
1704 const struct partial_symbol
*psym
;
1708 /* Stash the partial symbol away in the cache. */
1709 psym
= add_psymbol_to_bcache (name
, namelength
, copy_name
, domain
, theclass
,
1710 coreaddr
, language
, objfile
, &added
);
1712 /* Do not duplicate global partial symbols. */
1713 if (list
== &objfile
->global_psymbols
1717 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
1718 append_psymbol_to_list (list
, psym
, objfile
);
1721 /* Initialize storage for partial symbols. */
1724 init_psymbol_list (struct objfile
*objfile
, int total_symbols
)
1726 /* Free any previously allocated psymbol lists. */
1728 if (objfile
->global_psymbols
.list
)
1729 xfree (objfile
->global_psymbols
.list
);
1730 if (objfile
->static_psymbols
.list
)
1731 xfree (objfile
->static_psymbols
.list
);
1733 /* Current best guess is that approximately a twentieth
1734 of the total symbols (in a debugging file) are global or static
1735 oriented symbols, then multiply that by slop factor of two. */
1737 objfile
->global_psymbols
.size
= total_symbols
/ 10;
1738 objfile
->static_psymbols
.size
= total_symbols
/ 10;
1740 if (objfile
->global_psymbols
.size
> 0)
1742 objfile
->global_psymbols
.next
=
1743 objfile
->global_psymbols
.list
=
1744 XNEWVEC (struct partial_symbol
*, objfile
->global_psymbols
.size
);
1746 if (objfile
->static_psymbols
.size
> 0)
1748 objfile
->static_psymbols
.next
=
1749 objfile
->static_psymbols
.list
=
1750 XNEWVEC (struct partial_symbol
*, objfile
->static_psymbols
.size
);
1754 struct partial_symtab
*
1755 allocate_psymtab (const char *filename
, struct objfile
*objfile
)
1757 struct partial_symtab
*psymtab
;
1759 if (objfile
->free_psymtabs
)
1761 psymtab
= objfile
->free_psymtabs
;
1762 objfile
->free_psymtabs
= psymtab
->next
;
1765 psymtab
= (struct partial_symtab
*)
1766 obstack_alloc (&objfile
->objfile_obstack
,
1767 sizeof (struct partial_symtab
));
1769 memset (psymtab
, 0, sizeof (struct partial_symtab
));
1771 = (const char *) bcache (filename
, strlen (filename
) + 1,
1772 objfile
->per_bfd
->filename_cache
);
1773 psymtab
->compunit_symtab
= NULL
;
1775 /* Prepend it to the psymtab list for the objfile it belongs to.
1776 Psymtabs are searched in most recent inserted -> least recent
1779 psymtab
->next
= objfile
->psymtabs
;
1780 objfile
->psymtabs
= psymtab
;
1782 if (symtab_create_debug
)
1784 /* Be a bit clever with debugging messages, and don't print objfile
1785 every time, only when it changes. */
1786 static char *last_objfile_name
= NULL
;
1788 if (last_objfile_name
== NULL
1789 || strcmp (last_objfile_name
, objfile_name (objfile
)) != 0)
1791 xfree (last_objfile_name
);
1792 last_objfile_name
= xstrdup (objfile_name (objfile
));
1793 fprintf_unfiltered (gdb_stdlog
,
1794 "Creating one or more psymtabs for objfile %s ...\n",
1797 fprintf_unfiltered (gdb_stdlog
,
1798 "Created psymtab %s for module %s.\n",
1799 host_address_to_string (psymtab
), filename
);
1806 discard_psymtab (struct objfile
*objfile
, struct partial_symtab
*pst
)
1808 struct partial_symtab
**prev_pst
;
1811 Empty psymtabs happen as a result of header files which don't
1812 have any symbols in them. There can be a lot of them. But this
1813 check is wrong, in that a psymtab with N_SLINE entries but
1814 nothing else is not empty, but we don't realize that. Fixing
1815 that without slowing things down might be tricky. */
1817 /* First, snip it out of the psymtab chain. */
1819 prev_pst
= &(objfile
->psymtabs
);
1820 while ((*prev_pst
) != pst
)
1821 prev_pst
= &((*prev_pst
)->next
);
1822 (*prev_pst
) = pst
->next
;
1824 /* Next, put it on a free list for recycling. */
1826 pst
->next
= objfile
->free_psymtabs
;
1827 objfile
->free_psymtabs
= pst
;
1832 /* We need to pass a couple of items to the addrmap_foreach function,
1835 struct dump_psymtab_addrmap_data
1837 struct objfile
*objfile
;
1838 struct partial_symtab
*psymtab
;
1839 struct ui_file
*outfile
;
1841 /* Non-zero if the previously printed addrmap entry was for PSYMTAB.
1842 If so, we want to print the next one as well (since the next addrmap
1843 entry defines the end of the range). */
1844 int previous_matched
;
1847 /* Helper function for dump_psymtab_addrmap to print an addrmap entry. */
1850 dump_psymtab_addrmap_1 (void *datap
, CORE_ADDR start_addr
, void *obj
)
1852 struct dump_psymtab_addrmap_data
*data
1853 = (struct dump_psymtab_addrmap_data
*) datap
;
1854 struct gdbarch
*gdbarch
= get_objfile_arch (data
->objfile
);
1855 struct partial_symtab
*addrmap_psymtab
= (struct partial_symtab
*) obj
;
1856 const char *psymtab_address_or_end
= NULL
;
1860 if (data
->psymtab
== NULL
1861 || data
->psymtab
== addrmap_psymtab
)
1862 psymtab_address_or_end
= host_address_to_string (addrmap_psymtab
);
1863 else if (data
->previous_matched
)
1864 psymtab_address_or_end
= "<ends here>";
1866 if (data
->psymtab
== NULL
1867 || data
->psymtab
== addrmap_psymtab
1868 || data
->previous_matched
)
1870 fprintf_filtered (data
->outfile
, " %s%s %s\n",
1871 data
->psymtab
!= NULL
? " " : "",
1872 paddress (gdbarch
, start_addr
),
1873 psymtab_address_or_end
);
1876 data
->previous_matched
= (data
->psymtab
== NULL
1877 || data
->psymtab
== addrmap_psymtab
);
1882 /* Helper function for maintenance_print_psymbols to print the addrmap
1883 of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
1886 dump_psymtab_addrmap (struct objfile
*objfile
, struct partial_symtab
*psymtab
,
1887 struct ui_file
*outfile
)
1889 struct dump_psymtab_addrmap_data addrmap_dump_data
;
1891 if ((psymtab
== NULL
1892 || psymtab
->psymtabs_addrmap_supported
)
1893 && objfile
->psymtabs_addrmap
!= NULL
)
1895 addrmap_dump_data
.objfile
= objfile
;
1896 addrmap_dump_data
.psymtab
= psymtab
;
1897 addrmap_dump_data
.outfile
= outfile
;
1898 addrmap_dump_data
.previous_matched
= 0;
1899 fprintf_filtered (outfile
, "%sddress map:\n",
1900 psymtab
== NULL
? "Entire a" : " A");
1901 addrmap_foreach (objfile
->psymtabs_addrmap
, dump_psymtab_addrmap_1
,
1902 &addrmap_dump_data
);
1907 maintenance_print_psymbols (char *args
, int from_tty
)
1910 struct ui_file
*outfile
= gdb_stdout
;
1911 struct cleanup
*cleanups
;
1912 char *address_arg
= NULL
, *source_arg
= NULL
, *objfile_arg
= NULL
;
1913 struct objfile
*objfile
;
1914 struct partial_symtab
*ps
;
1915 int i
, outfile_idx
, found
;
1917 struct obj_section
*section
= NULL
;
1921 argv
= gdb_buildargv (args
);
1922 cleanups
= make_cleanup_freeargv (argv
);
1924 for (i
= 0; argv
!= NULL
&& argv
[i
] != NULL
; ++i
)
1926 if (strcmp (argv
[i
], "-pc") == 0)
1928 if (argv
[i
+ 1] == NULL
)
1929 error (_("Missing pc value"));
1930 address_arg
= argv
[++i
];
1932 else if (strcmp (argv
[i
], "-source") == 0)
1934 if (argv
[i
+ 1] == NULL
)
1935 error (_("Missing source file"));
1936 source_arg
= argv
[++i
];
1938 else if (strcmp (argv
[i
], "-objfile") == 0)
1940 if (argv
[i
+ 1] == NULL
)
1941 error (_("Missing objfile name"));
1942 objfile_arg
= argv
[++i
];
1944 else if (strcmp (argv
[i
], "--") == 0)
1946 /* End of options. */
1950 else if (argv
[i
][0] == '-')
1952 /* Future proofing: Don't allow OUTFILE to begin with "-". */
1953 error (_("Unknown option: %s"), argv
[i
]);
1960 if (address_arg
!= NULL
&& source_arg
!= NULL
)
1961 error (_("Must specify at most one of -pc and -source"));
1963 stdio_file arg_outfile
;
1965 if (argv
!= NULL
&& argv
[outfile_idx
] != NULL
)
1969 if (argv
[outfile_idx
+ 1] != NULL
)
1970 error (_("Junk at end of command"));
1971 outfile_name
= tilde_expand (argv
[outfile_idx
]);
1972 make_cleanup (xfree
, outfile_name
);
1973 if (!arg_outfile
.open (outfile_name
, FOPEN_WT
))
1974 perror_with_name (outfile_name
);
1975 outfile
= &arg_outfile
;
1978 if (address_arg
!= NULL
)
1980 pc
= parse_and_eval_address (address_arg
);
1981 /* If we fail to find a section, that's ok, try the lookup anyway. */
1982 section
= find_pc_section (pc
);
1986 ALL_OBJFILES (objfile
)
1988 int printed_objfile_header
= 0;
1989 int print_for_objfile
= 1;
1992 if (objfile_arg
!= NULL
)
1994 = compare_filenames_for_search (objfile_name (objfile
),
1996 if (!print_for_objfile
)
1999 if (address_arg
!= NULL
)
2001 struct bound_minimal_symbol msymbol
= { NULL
, NULL
};
2003 /* We don't assume each pc has a unique objfile (this is for
2005 ps
= find_pc_sect_psymtab (objfile
, pc
, section
, msymbol
);
2008 if (!printed_objfile_header
)
2010 outfile
->printf ("\nPartial symtabs for objfile %s\n",
2011 objfile_name (objfile
));
2012 printed_objfile_header
= 1;
2014 dump_psymtab (objfile
, ps
, outfile
);
2015 dump_psymtab_addrmap (objfile
, ps
, outfile
);
2021 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, ps
)
2023 int print_for_source
= 0;
2026 if (source_arg
!= NULL
)
2029 = compare_filenames_for_search (ps
->filename
, source_arg
);
2032 if (source_arg
== NULL
2033 || print_for_source
)
2035 if (!printed_objfile_header
)
2037 outfile
->printf ("\nPartial symtabs for objfile %s\n",
2038 objfile_name (objfile
));
2039 printed_objfile_header
= 1;
2041 dump_psymtab (objfile
, ps
, outfile
);
2042 dump_psymtab_addrmap (objfile
, ps
, outfile
);
2047 /* If we're printing all the objfile's symbols dump the full addrmap. */
2049 if (address_arg
== NULL
2050 && source_arg
== NULL
2051 && objfile
->psymtabs_addrmap
!= NULL
)
2053 outfile
->puts ("\n");
2054 dump_psymtab_addrmap (objfile
, NULL
, outfile
);
2060 if (address_arg
!= NULL
)
2061 error (_("No partial symtab for address: %s"), address_arg
);
2062 if (source_arg
!= NULL
)
2063 error (_("No partial symtab for source file: %s"), source_arg
);
2066 do_cleanups (cleanups
);
2069 /* List all the partial symbol tables whose names match REGEXP (optional). */
2072 maintenance_info_psymtabs (char *regexp
, int from_tty
)
2074 struct program_space
*pspace
;
2075 struct objfile
*objfile
;
2080 ALL_PSPACES (pspace
)
2081 ALL_PSPACE_OBJFILES (pspace
, objfile
)
2083 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2084 struct partial_symtab
*psymtab
;
2086 /* We don't want to print anything for this objfile until we
2087 actually find a symtab whose name matches. */
2088 int printed_objfile_start
= 0;
2090 ALL_OBJFILE_PSYMTABS_REQUIRED (objfile
, psymtab
)
2095 || re_exec (psymtab
->filename
))
2097 if (! printed_objfile_start
)
2099 printf_filtered ("{ objfile %s ", objfile_name (objfile
));
2101 printf_filtered ("((struct objfile *) %s)\n",
2102 host_address_to_string (objfile
));
2103 printed_objfile_start
= 1;
2106 printf_filtered (" { psymtab %s ", psymtab
->filename
);
2108 printf_filtered ("((struct partial_symtab *) %s)\n",
2109 host_address_to_string (psymtab
));
2111 printf_filtered (" readin %s\n",
2112 psymtab
->readin
? "yes" : "no");
2113 printf_filtered (" fullname %s\n",
2115 ? psymtab
->fullname
: "(null)");
2116 printf_filtered (" text addresses ");
2117 fputs_filtered (paddress (gdbarch
, psymtab
->textlow
),
2119 printf_filtered (" -- ");
2120 fputs_filtered (paddress (gdbarch
, psymtab
->texthigh
),
2122 printf_filtered ("\n");
2123 printf_filtered (" psymtabs_addrmap_supported %s\n",
2124 (psymtab
->psymtabs_addrmap_supported
2126 printf_filtered (" globals ");
2127 if (psymtab
->n_global_syms
)
2129 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2130 host_address_to_string (objfile
->global_psymbols
.list
2131 + psymtab
->globals_offset
),
2132 psymtab
->n_global_syms
);
2135 printf_filtered ("(none)\n");
2136 printf_filtered (" statics ");
2137 if (psymtab
->n_static_syms
)
2139 printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
2140 host_address_to_string (objfile
->static_psymbols
.list
2141 + psymtab
->statics_offset
),
2142 psymtab
->n_static_syms
);
2145 printf_filtered ("(none)\n");
2146 printf_filtered (" dependencies ");
2147 if (psymtab
->number_of_dependencies
)
2151 printf_filtered ("{\n");
2152 for (i
= 0; i
< psymtab
->number_of_dependencies
; i
++)
2154 struct partial_symtab
*dep
= psymtab
->dependencies
[i
];
2156 /* Note the string concatenation there --- no comma. */
2157 printf_filtered (" psymtab %s "
2158 "((struct partial_symtab *) %s)\n",
2160 host_address_to_string (dep
));
2162 printf_filtered (" }\n");
2165 printf_filtered ("(none)\n");
2166 printf_filtered (" }\n");
2170 if (printed_objfile_start
)
2171 printf_filtered ("}\n");
2175 /* Check consistency of currently expanded psymtabs vs symtabs. */
2178 maintenance_check_psymtabs (char *ignore
, int from_tty
)
2181 struct partial_symbol
**psym
;
2182 struct compunit_symtab
*cust
= NULL
;
2183 struct partial_symtab
*ps
;
2184 const struct blockvector
*bv
;
2185 struct objfile
*objfile
;
2189 ALL_PSYMTABS (objfile
, ps
)
2191 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2193 /* We don't call psymtab_to_symtab here because that may cause symtab
2194 expansion. When debugging a problem it helps if checkers leave
2195 things unchanged. */
2196 cust
= ps
->compunit_symtab
;
2198 /* First do some checks that don't require the associated symtab. */
2199 if (ps
->texthigh
< ps
->textlow
)
2201 printf_filtered ("Psymtab ");
2202 puts_filtered (ps
->filename
);
2203 printf_filtered (" covers bad range ");
2204 fputs_filtered (paddress (gdbarch
, ps
->textlow
), gdb_stdout
);
2205 printf_filtered (" - ");
2206 fputs_filtered (paddress (gdbarch
, ps
->texthigh
), gdb_stdout
);
2207 printf_filtered ("\n");
2211 /* Now do checks requiring the associated symtab. */
2214 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2215 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
2216 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2217 length
= ps
->n_static_syms
;
2220 sym
= block_lookup_symbol (b
, SYMBOL_LINKAGE_NAME (*psym
),
2221 SYMBOL_DOMAIN (*psym
));
2224 printf_filtered ("Static symbol `");
2225 puts_filtered (SYMBOL_LINKAGE_NAME (*psym
));
2226 printf_filtered ("' only found in ");
2227 puts_filtered (ps
->filename
);
2228 printf_filtered (" psymtab\n");
2232 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2233 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2234 length
= ps
->n_global_syms
;
2237 sym
= block_lookup_symbol (b
, SYMBOL_LINKAGE_NAME (*psym
),
2238 SYMBOL_DOMAIN (*psym
));
2241 printf_filtered ("Global symbol `");
2242 puts_filtered (SYMBOL_LINKAGE_NAME (*psym
));
2243 printf_filtered ("' only found in ");
2244 puts_filtered (ps
->filename
);
2245 printf_filtered (" psymtab\n");
2249 if (ps
->texthigh
!= 0
2250 && (ps
->textlow
< BLOCK_START (b
) || ps
->texthigh
> BLOCK_END (b
)))
2252 printf_filtered ("Psymtab ");
2253 puts_filtered (ps
->filename
);
2254 printf_filtered (" covers ");
2255 fputs_filtered (paddress (gdbarch
, ps
->textlow
), gdb_stdout
);
2256 printf_filtered (" - ");
2257 fputs_filtered (paddress (gdbarch
, ps
->texthigh
), gdb_stdout
);
2258 printf_filtered (" but symtab covers only ");
2259 fputs_filtered (paddress (gdbarch
, BLOCK_START (b
)), gdb_stdout
);
2260 printf_filtered (" - ");
2261 fputs_filtered (paddress (gdbarch
, BLOCK_END (b
)), gdb_stdout
);
2262 printf_filtered ("\n");
2269 extern initialize_file_ftype _initialize_psymtab
;
2272 _initialize_psymtab (void)
2274 add_cmd ("psymbols", class_maintenance
, maintenance_print_psymbols
, _("\
2275 Print dump of current partial symbol definitions.\n\
2276 Usage: mt print psymbols [-objfile objfile] [-pc address] [--] [outfile]\n\
2277 mt print psymbols [-objfile objfile] [-source source] [--] [outfile]\n\
2278 Entries in the partial symbol table are dumped to file OUTFILE,\n\
2279 or the terminal if OUTFILE is unspecified.\n\
2280 If ADDRESS is provided, dump only the file for that address.\n\
2281 If SOURCE is provided, dump only that file's symbols.\n\
2282 If OBJFILE is provided, dump only that file's minimal symbols."),
2283 &maintenanceprintlist
);
2285 add_cmd ("psymtabs", class_maintenance
, maintenance_info_psymtabs
, _("\
2286 List the partial symbol tables for all object files.\n\
2287 This does not include information about individual partial symbols,\n\
2288 just the symbol table structures themselves."),
2289 &maintenanceinfolist
);
2291 add_cmd ("check-psymtabs", class_maintenance
, maintenance_check_psymtabs
,
2293 Check consistency of currently expanded psymtabs versus symtabs."),