1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
40 #include "filenames.h" /* for FILENAME_CMP */
41 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
58 #include "gdb_assert.h"
61 /* Prototypes for local functions */
63 static void completion_list_add_name (char *, char *, int, char *, char *);
65 static void rbreak_command (char *, int);
67 static void types_info (char *, int);
69 static void functions_info (char *, int);
71 static void variables_info (char *, int);
73 static void sources_info (char *, int);
75 static void output_source_filename (const char *, int *);
77 static int find_line_common (struct linetable *, int, int *);
79 /* This one is used by linespec.c */
81 char *operator_chars (char *p, char **end);
83 static struct symbol *lookup_symbol_aux (const char *name,
84 const char *linkage_name,
85 const struct block *block,
86 const domain_enum domain,
87 enum language language,
88 int *is_a_field_of_this,
89 struct symtab **symtab);
92 struct symbol *lookup_symbol_aux_local (const char *name,
93 const char *linkage_name,
94 const struct block *block,
95 const domain_enum domain,
96 struct symtab **symtab);
99 struct symbol *lookup_symbol_aux_symtabs (int block_index,
101 const char *linkage_name,
102 const domain_enum domain,
103 struct symtab **symtab);
106 struct symbol *lookup_symbol_aux_psymtabs (int block_index,
108 const char *linkage_name,
109 const domain_enum domain,
110 struct symtab **symtab);
112 static void fixup_section (struct general_symbol_info *, struct objfile *);
114 static int file_matches (char *, char **, int);
116 static void print_symbol_info (domain_enum,
117 struct symtab *, struct symbol *, int, char *);
119 static void print_msymbol_info (struct minimal_symbol *);
121 static void symtab_symbol_info (char *, domain_enum, int);
123 void _initialize_symtab (void);
127 /* Allow the user to configure the debugger behavior with respect
128 to multiple-choice menus when more than one symbol matches during
131 const char const multiple_symbols_ask[] = "ask";
132 const char const multiple_symbols_all[] = "all";
133 const char const multiple_symbols_cancel[] = "cancel";
134 static const char *multiple_symbols_modes[] =
136 multiple_symbols_ask,
137 multiple_symbols_all,
138 multiple_symbols_cancel,
141 static const char *multiple_symbols_mode = multiple_symbols_all;
143 /* Read-only accessor to AUTO_SELECT_MODE. */
146 multiple_symbols_select_mode (void)
148 return multiple_symbols_mode;
151 /* The single non-language-specific builtin type */
152 struct type *builtin_type_error;
154 /* Block in which the most recently searched-for symbol was found.
155 Might be better to make this a parameter to lookup_symbol and
158 const struct block *block_found;
160 /* Check for a symtab of a specific name; first in symtabs, then in
161 psymtabs. *If* there is no '/' in the name, a match after a '/'
162 in the symtab filename will also work. */
165 lookup_symtab (const char *name)
168 struct partial_symtab *ps;
169 struct objfile *objfile;
170 char *real_path = NULL;
171 char *full_path = NULL;
173 /* Here we are interested in canonicalizing an absolute path, not
174 absolutizing a relative path. */
175 if (IS_ABSOLUTE_PATH (name))
177 full_path = xfullpath (name);
178 make_cleanup (xfree, full_path);
179 real_path = gdb_realpath (name);
180 make_cleanup (xfree, real_path);
185 /* First, search for an exact match */
187 ALL_SYMTABS (objfile, s)
189 if (FILENAME_CMP (name, s->filename) == 0)
194 /* If the user gave us an absolute path, try to find the file in
195 this symtab and use its absolute path. */
197 if (full_path != NULL)
199 const char *fp = symtab_to_fullname (s);
200 if (fp != NULL && FILENAME_CMP (full_path, fp) == 0)
206 if (real_path != NULL)
208 char *fullname = symtab_to_fullname (s);
209 if (fullname != NULL)
211 char *rp = gdb_realpath (fullname);
212 make_cleanup (xfree, rp);
213 if (FILENAME_CMP (real_path, rp) == 0)
221 /* Now, search for a matching tail (only if name doesn't have any dirs) */
223 if (lbasename (name) == name)
224 ALL_SYMTABS (objfile, s)
226 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
230 /* Same search rules as above apply here, but now we look thru the
233 ps = lookup_partial_symtab (name);
238 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
241 s = PSYMTAB_TO_SYMTAB (ps);
246 /* At this point, we have located the psymtab for this file, but
247 the conversion to a symtab has failed. This usually happens
248 when we are looking up an include file. In this case,
249 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
250 been created. So, we need to run through the symtabs again in
251 order to find the file.
252 XXX - This is a crock, and should be fixed inside of the the
253 symbol parsing routines. */
257 /* Lookup the partial symbol table of a source file named NAME.
258 *If* there is no '/' in the name, a match after a '/'
259 in the psymtab filename will also work. */
261 struct partial_symtab *
262 lookup_partial_symtab (const char *name)
264 struct partial_symtab *pst;
265 struct objfile *objfile;
266 char *full_path = NULL;
267 char *real_path = NULL;
269 /* Here we are interested in canonicalizing an absolute path, not
270 absolutizing a relative path. */
271 if (IS_ABSOLUTE_PATH (name))
273 full_path = xfullpath (name);
274 make_cleanup (xfree, full_path);
275 real_path = gdb_realpath (name);
276 make_cleanup (xfree, real_path);
279 ALL_PSYMTABS (objfile, pst)
281 if (FILENAME_CMP (name, pst->filename) == 0)
286 /* If the user gave us an absolute path, try to find the file in
287 this symtab and use its absolute path. */
288 if (full_path != NULL)
290 psymtab_to_fullname (pst);
291 if (pst->fullname != NULL
292 && FILENAME_CMP (full_path, pst->fullname) == 0)
298 if (real_path != NULL)
301 psymtab_to_fullname (pst);
302 if (pst->fullname != NULL)
304 rp = gdb_realpath (pst->fullname);
305 make_cleanup (xfree, rp);
307 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
314 /* Now, search for a matching tail (only if name doesn't have any dirs) */
316 if (lbasename (name) == name)
317 ALL_PSYMTABS (objfile, pst)
319 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
326 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
327 full method name, which consist of the class name (from T), the unadorned
328 method name from METHOD_ID, and the signature for the specific overload,
329 specified by SIGNATURE_ID. Note that this function is g++ specific. */
332 gdb_mangle_name (struct type *type, int method_id, int signature_id)
334 int mangled_name_len;
336 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
337 struct fn_field *method = &f[signature_id];
338 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
339 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
340 char *newname = type_name_no_tag (type);
342 /* Does the form of physname indicate that it is the full mangled name
343 of a constructor (not just the args)? */
344 int is_full_physname_constructor;
347 int is_destructor = is_destructor_name (physname);
348 /* Need a new type prefix. */
349 char *const_prefix = method->is_const ? "C" : "";
350 char *volatile_prefix = method->is_volatile ? "V" : "";
352 int len = (newname == NULL ? 0 : strlen (newname));
354 /* Nothing to do if physname already contains a fully mangled v3 abi name
355 or an operator name. */
356 if ((physname[0] == '_' && physname[1] == 'Z')
357 || is_operator_name (field_name))
358 return xstrdup (physname);
360 is_full_physname_constructor = is_constructor_name (physname);
363 is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0);
366 is_destructor = (strncmp (physname, "__dt", 4) == 0);
368 if (is_destructor || is_full_physname_constructor)
370 mangled_name = (char *) xmalloc (strlen (physname) + 1);
371 strcpy (mangled_name, physname);
377 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
379 else if (physname[0] == 't' || physname[0] == 'Q')
381 /* The physname for template and qualified methods already includes
383 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
389 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
391 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
392 + strlen (buf) + len + strlen (physname) + 1);
395 mangled_name = (char *) xmalloc (mangled_name_len);
397 mangled_name[0] = '\0';
399 strcpy (mangled_name, field_name);
401 strcat (mangled_name, buf);
402 /* If the class doesn't have a name, i.e. newname NULL, then we just
403 mangle it using 0 for the length of the class. Thus it gets mangled
404 as something starting with `::' rather than `classname::'. */
406 strcat (mangled_name, newname);
408 strcat (mangled_name, physname);
409 return (mangled_name);
413 /* Initialize the language dependent portion of a symbol
414 depending upon the language for the symbol. */
416 symbol_init_language_specific (struct general_symbol_info *gsymbol,
417 enum language language)
419 gsymbol->language = language;
420 if (gsymbol->language == language_cplus
421 || gsymbol->language == language_java
422 || gsymbol->language == language_objc)
424 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
428 memset (&gsymbol->language_specific, 0,
429 sizeof (gsymbol->language_specific));
433 /* Functions to initialize a symbol's mangled name. */
435 /* Create the hash table used for demangled names. Each hash entry is
436 a pair of strings; one for the mangled name and one for the demangled
437 name. The entry is hashed via just the mangled name. */
440 create_demangled_names_hash (struct objfile *objfile)
442 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
443 The hash table code will round this up to the next prime number.
444 Choosing a much larger table size wastes memory, and saves only about
445 1% in symbol reading. */
447 objfile->demangled_names_hash = htab_create_alloc
448 (256, htab_hash_string, (int (*) (const void *, const void *)) streq,
449 NULL, xcalloc, xfree);
452 /* Try to determine the demangled name for a symbol, based on the
453 language of that symbol. If the language is set to language_auto,
454 it will attempt to find any demangling algorithm that works and
455 then set the language appropriately. The returned name is allocated
456 by the demangler and should be xfree'd. */
459 symbol_find_demangled_name (struct general_symbol_info *gsymbol,
462 char *demangled = NULL;
464 if (gsymbol->language == language_unknown)
465 gsymbol->language = language_auto;
467 if (gsymbol->language == language_objc
468 || gsymbol->language == language_auto)
471 objc_demangle (mangled, 0);
472 if (demangled != NULL)
474 gsymbol->language = language_objc;
478 if (gsymbol->language == language_cplus
479 || gsymbol->language == language_auto)
482 cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
483 if (demangled != NULL)
485 gsymbol->language = language_cplus;
489 if (gsymbol->language == language_java)
492 cplus_demangle (mangled,
493 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
494 if (demangled != NULL)
496 gsymbol->language = language_java;
503 /* Set both the mangled and demangled (if any) names for GSYMBOL based
504 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
505 is used, and the memory comes from that objfile's objfile_obstack.
506 LINKAGE_NAME is copied, so the pointer can be discarded after
507 calling this function. */
509 /* We have to be careful when dealing with Java names: when we run
510 into a Java minimal symbol, we don't know it's a Java symbol, so it
511 gets demangled as a C++ name. This is unfortunate, but there's not
512 much we can do about it: but when demangling partial symbols and
513 regular symbols, we'd better not reuse the wrong demangled name.
514 (See PR gdb/1039.) We solve this by putting a distinctive prefix
515 on Java names when storing them in the hash table. */
517 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
518 don't mind the Java prefix so much: different languages have
519 different demangling requirements, so it's only natural that we
520 need to keep language data around in our demangling cache. But
521 it's not good that the minimal symbol has the wrong demangled name.
522 Unfortunately, I can't think of any easy solution to that
525 #define JAVA_PREFIX "##JAVA$$"
526 #define JAVA_PREFIX_LEN 8
529 symbol_set_names (struct general_symbol_info *gsymbol,
530 const char *linkage_name, int len, struct objfile *objfile)
533 /* A 0-terminated copy of the linkage name. */
534 const char *linkage_name_copy;
535 /* A copy of the linkage name that might have a special Java prefix
536 added to it, for use when looking names up in the hash table. */
537 const char *lookup_name;
538 /* The length of lookup_name. */
541 if (objfile->demangled_names_hash == NULL)
542 create_demangled_names_hash (objfile);
544 if (gsymbol->language == language_ada)
546 /* In Ada, we do the symbol lookups using the mangled name, so
547 we can save some space by not storing the demangled name.
549 As a side note, we have also observed some overlap between
550 the C++ mangling and Ada mangling, similarly to what has
551 been observed with Java. Because we don't store the demangled
552 name with the symbol, we don't need to use the same trick
554 gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1);
555 memcpy (gsymbol->name, linkage_name, len);
556 gsymbol->name[len] = '\0';
557 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
562 /* The stabs reader generally provides names that are not
563 NUL-terminated; most of the other readers don't do this, so we
564 can just use the given copy, unless we're in the Java case. */
565 if (gsymbol->language == language_java)
568 lookup_len = len + JAVA_PREFIX_LEN;
570 alloc_name = alloca (lookup_len + 1);
571 memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN);
572 memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len);
573 alloc_name[lookup_len] = '\0';
575 lookup_name = alloc_name;
576 linkage_name_copy = alloc_name + JAVA_PREFIX_LEN;
578 else if (linkage_name[len] != '\0')
583 alloc_name = alloca (lookup_len + 1);
584 memcpy (alloc_name, linkage_name, len);
585 alloc_name[lookup_len] = '\0';
587 lookup_name = alloc_name;
588 linkage_name_copy = alloc_name;
593 lookup_name = linkage_name;
594 linkage_name_copy = linkage_name;
597 slot = (char **) htab_find_slot (objfile->demangled_names_hash,
598 lookup_name, INSERT);
600 /* If this name is not in the hash table, add it. */
603 char *demangled_name = symbol_find_demangled_name (gsymbol,
605 int demangled_len = demangled_name ? strlen (demangled_name) : 0;
607 /* If there is a demangled name, place it right after the mangled name.
608 Otherwise, just place a second zero byte after the end of the mangled
610 *slot = obstack_alloc (&objfile->objfile_obstack,
611 lookup_len + demangled_len + 2);
612 memcpy (*slot, lookup_name, lookup_len + 1);
613 if (demangled_name != NULL)
615 memcpy (*slot + lookup_len + 1, demangled_name, demangled_len + 1);
616 xfree (demangled_name);
619 (*slot)[lookup_len + 1] = '\0';
622 gsymbol->name = *slot + lookup_len - len;
623 if ((*slot)[lookup_len + 1] != '\0')
624 gsymbol->language_specific.cplus_specific.demangled_name
625 = &(*slot)[lookup_len + 1];
627 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
630 /* Initialize the demangled name of GSYMBOL if possible. Any required space
631 to store the name is obtained from the specified obstack. The function
632 symbol_set_names, above, should be used instead where possible for more
633 efficient memory usage. */
636 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
637 struct obstack *obstack)
639 char *mangled = gsymbol->name;
640 char *demangled = NULL;
642 demangled = symbol_find_demangled_name (gsymbol, mangled);
643 if (gsymbol->language == language_cplus
644 || gsymbol->language == language_java
645 || gsymbol->language == language_objc)
649 gsymbol->language_specific.cplus_specific.demangled_name
650 = obsavestring (demangled, strlen (demangled), obstack);
654 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
658 /* Unknown language; just clean up quietly. */
664 /* Return the source code name of a symbol. In languages where
665 demangling is necessary, this is the demangled name. */
668 symbol_natural_name (const struct general_symbol_info *gsymbol)
670 switch (gsymbol->language)
675 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
676 return gsymbol->language_specific.cplus_specific.demangled_name;
679 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
680 return gsymbol->language_specific.cplus_specific.demangled_name;
682 return ada_decode_symbol (gsymbol);
687 return gsymbol->name;
690 /* Return the demangled name for a symbol based on the language for
691 that symbol. If no demangled name exists, return NULL. */
693 symbol_demangled_name (struct general_symbol_info *gsymbol)
695 switch (gsymbol->language)
700 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
701 return gsymbol->language_specific.cplus_specific.demangled_name;
704 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
705 return gsymbol->language_specific.cplus_specific.demangled_name;
707 return ada_decode_symbol (gsymbol);
715 /* Return the search name of a symbol---generally the demangled or
716 linkage name of the symbol, depending on how it will be searched for.
717 If there is no distinct demangled name, then returns the same value
718 (same pointer) as SYMBOL_LINKAGE_NAME. */
720 symbol_search_name (const struct general_symbol_info *gsymbol)
722 if (gsymbol->language == language_ada)
723 return gsymbol->name;
725 return symbol_natural_name (gsymbol);
728 /* Initialize the structure fields to zero values. */
730 init_sal (struct symtab_and_line *sal)
737 sal->explicit_pc = 0;
738 sal->explicit_line = 0;
742 /* Return 1 if the two sections are the same, or if they could
743 plausibly be copies of each other, one in an original object
744 file and another in a separated debug file. */
747 matching_bfd_sections (asection *first, asection *second)
751 /* If they're the same section, then they match. */
755 /* If either is NULL, give up. */
756 if (first == NULL || second == NULL)
759 /* This doesn't apply to absolute symbols. */
760 if (first->owner == NULL || second->owner == NULL)
763 /* If they're in the same object file, they must be different sections. */
764 if (first->owner == second->owner)
767 /* Check whether the two sections are potentially corresponding. They must
768 have the same size, address, and name. We can't compare section indexes,
769 which would be more reliable, because some sections may have been
771 if (bfd_get_section_size (first) != bfd_get_section_size (second))
774 /* In-memory addresses may start at a different offset, relativize them. */
775 if (bfd_get_section_vma (first->owner, first)
776 - bfd_get_start_address (first->owner)
777 != bfd_get_section_vma (second->owner, second)
778 - bfd_get_start_address (second->owner))
781 if (bfd_get_section_name (first->owner, first) == NULL
782 || bfd_get_section_name (second->owner, second) == NULL
783 || strcmp (bfd_get_section_name (first->owner, first),
784 bfd_get_section_name (second->owner, second)) != 0)
787 /* Otherwise check that they are in corresponding objfiles. */
790 if (obj->obfd == first->owner)
792 gdb_assert (obj != NULL);
794 if (obj->separate_debug_objfile != NULL
795 && obj->separate_debug_objfile->obfd == second->owner)
797 if (obj->separate_debug_objfile_backlink != NULL
798 && obj->separate_debug_objfile_backlink->obfd == second->owner)
804 /* Find which partial symtab contains PC and SECTION. Return 0 if
805 none. We return the psymtab that contains a symbol whose address
806 exactly matches PC, or, if we cannot find an exact match, the
807 psymtab that contains a symbol whose address is closest to PC. */
808 struct partial_symtab *
809 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
811 struct partial_symtab *pst;
812 struct objfile *objfile;
813 struct minimal_symbol *msymbol;
815 /* If we know that this is not a text address, return failure. This is
816 necessary because we loop based on texthigh and textlow, which do
817 not include the data ranges. */
818 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
820 && (msymbol->type == mst_data
821 || msymbol->type == mst_bss
822 || msymbol->type == mst_abs
823 || msymbol->type == mst_file_data
824 || msymbol->type == mst_file_bss))
827 ALL_PSYMTABS (objfile, pst)
829 if (pc >= pst->textlow && pc < pst->texthigh)
831 struct partial_symtab *tpst;
832 struct partial_symtab *best_pst = pst;
833 CORE_ADDR best_addr = pst->textlow;
835 /* An objfile that has its functions reordered might have
836 many partial symbol tables containing the PC, but
837 we want the partial symbol table that contains the
838 function containing the PC. */
839 if (!(objfile->flags & OBJF_REORDERED) &&
840 section == 0) /* can't validate section this way */
846 /* The code range of partial symtabs sometimes overlap, so, in
847 the loop below, we need to check all partial symtabs and
848 find the one that fits better for the given PC address. We
849 select the partial symtab that contains a symbol whose
850 address is closest to the PC address. By closest we mean
851 that find_pc_sect_symbol returns the symbol with address
852 that is closest and still less than the given PC. */
853 for (tpst = pst; tpst != NULL; tpst = tpst->next)
855 if (pc >= tpst->textlow && pc < tpst->texthigh)
857 struct partial_symbol *p;
860 /* NOTE: This assumes that every psymbol has a
861 corresponding msymbol, which is not necessarily
862 true; the debug info might be much richer than the
863 object's symbol table. */
864 p = find_pc_sect_psymbol (tpst, pc, section);
866 && SYMBOL_VALUE_ADDRESS (p)
867 == SYMBOL_VALUE_ADDRESS (msymbol))
870 /* Also accept the textlow value of a psymtab as a
871 "symbol", to provide some support for partial
872 symbol tables with line information but no debug
873 symbols (e.g. those produced by an assembler). */
875 this_addr = SYMBOL_VALUE_ADDRESS (p);
877 this_addr = tpst->textlow;
879 /* Check whether it is closer than our current
880 BEST_ADDR. Since this symbol address is
881 necessarily lower or equal to PC, the symbol closer
882 to PC is the symbol which address is the highest.
883 This way we return the psymtab which contains such
884 best match symbol. This can help in cases where the
885 symbol information/debuginfo is not complete, like
886 for instance on IRIX6 with gcc, where no debug info
887 is emitted for statics. (See also the nodebug.exp
889 if (this_addr > best_addr)
891 best_addr = this_addr;
902 /* Find which partial symtab contains PC. Return 0 if none.
903 Backward compatibility, no section */
905 struct partial_symtab *
906 find_pc_psymtab (CORE_ADDR pc)
908 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
911 /* Find which partial symbol within a psymtab matches PC and SECTION.
912 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
914 struct partial_symbol *
915 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
918 struct partial_symbol *best = NULL, *p, **pp;
922 psymtab = find_pc_sect_psymtab (pc, section);
926 /* Cope with programs that start at address 0 */
927 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
929 /* Search the global symbols as well as the static symbols, so that
930 find_pc_partial_function doesn't use a minimal symbol and thus
931 cache a bad endaddr. */
932 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
933 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
934 < psymtab->n_global_syms);
938 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
939 && SYMBOL_CLASS (p) == LOC_BLOCK
940 && pc >= SYMBOL_VALUE_ADDRESS (p)
941 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
942 || (psymtab->textlow == 0
943 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
945 if (section) /* match on a specific section */
947 fixup_psymbol_section (p, psymtab->objfile);
948 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p), section))
951 best_pc = SYMBOL_VALUE_ADDRESS (p);
956 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
957 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
958 < psymtab->n_static_syms);
962 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
963 && SYMBOL_CLASS (p) == LOC_BLOCK
964 && pc >= SYMBOL_VALUE_ADDRESS (p)
965 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
966 || (psymtab->textlow == 0
967 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
969 if (section) /* match on a specific section */
971 fixup_psymbol_section (p, psymtab->objfile);
972 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p), section))
975 best_pc = SYMBOL_VALUE_ADDRESS (p);
983 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
984 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
986 struct partial_symbol *
987 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
989 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
992 /* Debug symbols usually don't have section information. We need to dig that
993 out of the minimal symbols and stash that in the debug symbol. */
996 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
998 struct minimal_symbol *msym;
999 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
1003 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
1004 ginfo->section = SYMBOL_SECTION (msym);
1008 /* Static, function-local variables do appear in the linker
1009 (minimal) symbols, but are frequently given names that won't
1010 be found via lookup_minimal_symbol(). E.g., it has been
1011 observed in frv-uclinux (ELF) executables that a static,
1012 function-local variable named "foo" might appear in the
1013 linker symbols as "foo.6" or "foo.3". Thus, there is no
1014 point in attempting to extend the lookup-by-name mechanism to
1015 handle this case due to the fact that there can be multiple
1018 So, instead, search the section table when lookup by name has
1019 failed. The ``addr'' and ``endaddr'' fields may have already
1020 been relocated. If so, the relocation offset (i.e. the
1021 ANOFFSET value) needs to be subtracted from these values when
1022 performing the comparison. We unconditionally subtract it,
1023 because, when no relocation has been performed, the ANOFFSET
1024 value will simply be zero.
1026 The address of the symbol whose section we're fixing up HAS
1027 NOT BEEN adjusted (relocated) yet. It can't have been since
1028 the section isn't yet known and knowing the section is
1029 necessary in order to add the correct relocation value. In
1030 other words, we wouldn't even be in this function (attempting
1031 to compute the section) if it were already known.
1033 Note that it is possible to search the minimal symbols
1034 (subtracting the relocation value if necessary) to find the
1035 matching minimal symbol, but this is overkill and much less
1036 efficient. It is not necessary to find the matching minimal
1037 symbol, only its section.
1039 Note that this technique (of doing a section table search)
1040 can fail when unrelocated section addresses overlap. For
1041 this reason, we still attempt a lookup by name prior to doing
1042 a search of the section table. */
1045 struct obj_section *s;
1047 addr = ginfo->value.address;
1049 ALL_OBJFILE_OSECTIONS (objfile, s)
1051 int idx = s->the_bfd_section->index;
1052 CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx);
1054 if (s->addr - offset <= addr && addr < s->endaddr - offset)
1056 ginfo->bfd_section = s->the_bfd_section;
1057 ginfo->section = idx;
1065 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
1070 if (SYMBOL_BFD_SECTION (sym))
1073 fixup_section (&sym->ginfo, objfile);
1078 struct partial_symbol *
1079 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
1084 if (SYMBOL_BFD_SECTION (psym))
1087 fixup_section (&psym->ginfo, objfile);
1092 /* Find the definition for a specified symbol name NAME
1093 in domain DOMAIN, visible from lexical block BLOCK.
1094 Returns the struct symbol pointer, or zero if no symbol is found.
1095 If SYMTAB is non-NULL, store the symbol table in which the
1096 symbol was found there, or NULL if not found.
1097 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1098 NAME is a field of the current implied argument `this'. If so set
1099 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1100 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1101 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1103 /* This function has a bunch of loops in it and it would seem to be
1104 attractive to put in some QUIT's (though I'm not really sure
1105 whether it can run long enough to be really important). But there
1106 are a few calls for which it would appear to be bad news to quit
1107 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1108 that there is C++ code below which can error(), but that probably
1109 doesn't affect these calls since they are looking for a known
1110 variable and thus can probably assume it will never hit the C++
1114 lookup_symbol_in_language (const char *name, const struct block *block,
1115 const domain_enum domain, enum language lang,
1116 int *is_a_field_of_this,
1117 struct symtab **symtab)
1119 char *demangled_name = NULL;
1120 const char *modified_name = NULL;
1121 const char *mangled_name = NULL;
1122 int needtofreename = 0;
1123 struct symbol *returnval;
1125 modified_name = name;
1127 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1128 we can always binary search. */
1129 if (lang == language_cplus)
1131 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
1134 mangled_name = name;
1135 modified_name = demangled_name;
1139 else if (lang == language_java)
1141 demangled_name = cplus_demangle (name,
1142 DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
1145 mangled_name = name;
1146 modified_name = demangled_name;
1151 if (case_sensitivity == case_sensitive_off)
1156 len = strlen (name);
1157 copy = (char *) alloca (len + 1);
1158 for (i= 0; i < len; i++)
1159 copy[i] = tolower (name[i]);
1161 modified_name = copy;
1164 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
1166 is_a_field_of_this, symtab);
1168 xfree (demangled_name);
1170 /* Override the returned symtab with the symbol's specific one. */
1171 if (returnval != NULL && symtab != NULL)
1172 *symtab = SYMBOL_SYMTAB (returnval);
1177 /* Behave like lookup_symbol_in_language, but performed with the
1178 current language. */
1181 lookup_symbol (const char *name, const struct block *block,
1182 domain_enum domain, int *is_a_field_of_this,
1183 struct symtab **symtab)
1185 return lookup_symbol_in_language (name, block, domain,
1186 current_language->la_language,
1187 is_a_field_of_this, symtab);
1190 /* Behave like lookup_symbol except that NAME is the natural name
1191 of the symbol that we're looking for and, if LINKAGE_NAME is
1192 non-NULL, ensure that the symbol's linkage name matches as
1195 static struct symbol *
1196 lookup_symbol_aux (const char *name, const char *linkage_name,
1197 const struct block *block, const domain_enum domain,
1198 enum language language,
1199 int *is_a_field_of_this, struct symtab **symtab)
1202 const struct language_defn *langdef;
1204 /* Make sure we do something sensible with is_a_field_of_this, since
1205 the callers that set this parameter to some non-null value will
1206 certainly use it later and expect it to be either 0 or 1.
1207 If we don't set it, the contents of is_a_field_of_this are
1209 if (is_a_field_of_this != NULL)
1210 *is_a_field_of_this = 0;
1212 /* Search specified block and its superiors. Don't search
1213 STATIC_BLOCK or GLOBAL_BLOCK. */
1215 sym = lookup_symbol_aux_local (name, linkage_name, block, domain,
1220 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1221 check to see if NAME is a field of `this'. */
1223 langdef = language_def (language);
1225 if (langdef->la_value_of_this != NULL
1226 && is_a_field_of_this != NULL)
1228 struct value *v = langdef->la_value_of_this (0);
1230 if (v && check_field (v, name))
1232 *is_a_field_of_this = 1;
1239 /* Now do whatever is appropriate for LANGUAGE to look
1240 up static and global variables. */
1242 sym = langdef->la_lookup_symbol_nonlocal (name, linkage_name,
1243 block, domain, symtab);
1247 /* Now search all static file-level symbols. Not strictly correct,
1248 but more useful than an error. Do the symtabs first, then check
1249 the psymtabs. If a psymtab indicates the existence of the
1250 desired name as a file-level static, then do psymtab-to-symtab
1251 conversion on the fly and return the found symbol. */
1253 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, linkage_name,
1258 sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, linkage_name,
1268 /* Check to see if the symbol is defined in BLOCK or its superiors.
1269 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1271 static struct symbol *
1272 lookup_symbol_aux_local (const char *name, const char *linkage_name,
1273 const struct block *block,
1274 const domain_enum domain,
1275 struct symtab **symtab)
1278 const struct block *static_block = block_static_block (block);
1280 /* Check if either no block is specified or it's a global block. */
1282 if (static_block == NULL)
1285 while (block != static_block)
1287 sym = lookup_symbol_aux_block (name, linkage_name, block, domain,
1291 block = BLOCK_SUPERBLOCK (block);
1294 /* We've reached the static block without finding a result. */
1299 /* Look up OBJFILE to BLOCK. */
1301 static struct objfile *
1302 lookup_objfile_from_block (const struct block *block)
1304 struct objfile *obj;
1310 block = block_global_block (block);
1311 /* Go through SYMTABS. */
1312 ALL_SYMTABS (obj, s)
1313 if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK))
1319 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1320 symbol, and set block_found appropriately. */
1323 lookup_symbol_aux_block (const char *name, const char *linkage_name,
1324 const struct block *block,
1325 const domain_enum domain,
1326 struct symtab **symtab)
1329 struct objfile *objfile = NULL;
1330 struct blockvector *bv;
1332 struct symtab *s = NULL;
1334 sym = lookup_block_symbol (block, name, linkage_name, domain);
1337 block_found = block;
1340 /* Search the list of symtabs for one which contains the
1341 address of the start of this block. */
1342 ALL_PRIMARY_SYMTABS (objfile, s)
1344 bv = BLOCKVECTOR (s);
1345 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1346 if (BLOCK_START (b) <= BLOCK_START (block)
1347 && BLOCK_END (b) > BLOCK_START (block))
1354 return fixup_symbol_section (sym, objfile);
1360 /* Check all global symbols in OBJFILE in symtabs and
1364 lookup_global_symbol_from_objfile (const struct objfile *objfile,
1366 const char *linkage_name,
1367 const domain_enum domain,
1368 struct symtab **symtab)
1371 struct blockvector *bv;
1372 const struct block *block;
1374 struct partial_symtab *ps;
1376 /* Go through symtabs. */
1377 ALL_OBJFILE_SYMTABS (objfile, s)
1379 bv = BLOCKVECTOR (s);
1380 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1381 sym = lookup_block_symbol (block, name, linkage_name, domain);
1384 block_found = block;
1387 return fixup_symbol_section (sym, (struct objfile *)objfile);
1391 /* Now go through psymtabs. */
1392 ALL_OBJFILE_PSYMTABS (objfile, ps)
1395 && lookup_partial_symbol (ps, name, linkage_name,
1398 s = PSYMTAB_TO_SYMTAB (ps);
1399 bv = BLOCKVECTOR (s);
1400 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1401 sym = lookup_block_symbol (block, name, linkage_name, domain);
1404 return fixup_symbol_section (sym, (struct objfile *)objfile);
1408 if (objfile->separate_debug_objfile)
1409 return lookup_global_symbol_from_objfile (objfile->separate_debug_objfile,
1410 name, linkage_name, domain,
1416 /* Check to see if the symbol is defined in one of the symtabs.
1417 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1418 depending on whether or not we want to search global symbols or
1421 static struct symbol *
1422 lookup_symbol_aux_symtabs (int block_index,
1423 const char *name, const char *linkage_name,
1424 const domain_enum domain,
1425 struct symtab **symtab)
1428 struct objfile *objfile;
1429 struct blockvector *bv;
1430 const struct block *block;
1433 ALL_PRIMARY_SYMTABS (objfile, s)
1435 bv = BLOCKVECTOR (s);
1436 block = BLOCKVECTOR_BLOCK (bv, block_index);
1437 sym = lookup_block_symbol (block, name, linkage_name, domain);
1440 block_found = block;
1443 return fixup_symbol_section (sym, objfile);
1450 /* Check to see if the symbol is defined in one of the partial
1451 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1452 STATIC_BLOCK, depending on whether or not we want to search global
1453 symbols or static symbols. */
1455 static struct symbol *
1456 lookup_symbol_aux_psymtabs (int block_index, const char *name,
1457 const char *linkage_name,
1458 const domain_enum domain,
1459 struct symtab **symtab)
1462 struct objfile *objfile;
1463 struct blockvector *bv;
1464 const struct block *block;
1465 struct partial_symtab *ps;
1467 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
1469 ALL_PSYMTABS (objfile, ps)
1472 && lookup_partial_symbol (ps, name, linkage_name,
1473 psymtab_index, domain))
1475 s = PSYMTAB_TO_SYMTAB (ps);
1476 bv = BLOCKVECTOR (s);
1477 block = BLOCKVECTOR_BLOCK (bv, block_index);
1478 sym = lookup_block_symbol (block, name, linkage_name, domain);
1481 /* This shouldn't be necessary, but as a last resort try
1482 looking in the statics even though the psymtab claimed
1483 the symbol was global, or vice-versa. It's possible
1484 that the psymtab gets it wrong in some cases. */
1486 /* FIXME: carlton/2002-09-30: Should we really do that?
1487 If that happens, isn't it likely to be a GDB error, in
1488 which case we should fix the GDB error rather than
1489 silently dealing with it here? So I'd vote for
1490 removing the check for the symbol in the other
1492 block = BLOCKVECTOR_BLOCK (bv,
1493 block_index == GLOBAL_BLOCK ?
1494 STATIC_BLOCK : GLOBAL_BLOCK);
1495 sym = lookup_block_symbol (block, name, linkage_name, domain);
1497 error (_("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>)."),
1498 block_index == GLOBAL_BLOCK ? "global" : "static",
1499 name, ps->filename, name, name);
1503 return fixup_symbol_section (sym, objfile);
1510 /* A default version of lookup_symbol_nonlocal for use by languages
1511 that can't think of anything better to do. This implements the C
1515 basic_lookup_symbol_nonlocal (const char *name,
1516 const char *linkage_name,
1517 const struct block *block,
1518 const domain_enum domain,
1519 struct symtab **symtab)
1523 /* NOTE: carlton/2003-05-19: The comments below were written when
1524 this (or what turned into this) was part of lookup_symbol_aux;
1525 I'm much less worried about these questions now, since these
1526 decisions have turned out well, but I leave these comments here
1529 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1530 not it would be appropriate to search the current global block
1531 here as well. (That's what this code used to do before the
1532 is_a_field_of_this check was moved up.) On the one hand, it's
1533 redundant with the lookup_symbol_aux_symtabs search that happens
1534 next. On the other hand, if decode_line_1 is passed an argument
1535 like filename:var, then the user presumably wants 'var' to be
1536 searched for in filename. On the third hand, there shouldn't be
1537 multiple global variables all of which are named 'var', and it's
1538 not like decode_line_1 has ever restricted its search to only
1539 global variables in a single filename. All in all, only
1540 searching the static block here seems best: it's correct and it's
1543 /* NOTE: carlton/2002-12-05: There's also a possible performance
1544 issue here: if you usually search for global symbols in the
1545 current file, then it would be slightly better to search the
1546 current global block before searching all the symtabs. But there
1547 are other factors that have a much greater effect on performance
1548 than that one, so I don't think we should worry about that for
1551 sym = lookup_symbol_static (name, linkage_name, block, domain, symtab);
1555 return lookup_symbol_global (name, linkage_name, block, domain, symtab);
1558 /* Lookup a symbol in the static block associated to BLOCK, if there
1559 is one; do nothing if BLOCK is NULL or a global block. */
1562 lookup_symbol_static (const char *name,
1563 const char *linkage_name,
1564 const struct block *block,
1565 const domain_enum domain,
1566 struct symtab **symtab)
1568 const struct block *static_block = block_static_block (block);
1570 if (static_block != NULL)
1571 return lookup_symbol_aux_block (name, linkage_name, static_block,
1577 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1581 lookup_symbol_global (const char *name,
1582 const char *linkage_name,
1583 const struct block *block,
1584 const domain_enum domain,
1585 struct symtab **symtab)
1587 struct symbol *sym = NULL;
1588 struct objfile *objfile = NULL;
1590 /* Call library-specific lookup procedure. */
1591 objfile = lookup_objfile_from_block (block);
1592 if (objfile != NULL)
1593 sym = solib_global_lookup (objfile, name, linkage_name, domain, symtab);
1597 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name,
1602 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name,
1606 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1607 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1608 linkage name matches it. Check the global symbols if GLOBAL, the
1609 static symbols if not */
1611 struct partial_symbol *
1612 lookup_partial_symbol (struct partial_symtab *pst, const char *name,
1613 const char *linkage_name, int global,
1616 struct partial_symbol *temp;
1617 struct partial_symbol **start, **psym;
1618 struct partial_symbol **top, **real_top, **bottom, **center;
1619 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1620 int do_linear_search = 1;
1627 pst->objfile->global_psymbols.list + pst->globals_offset :
1628 pst->objfile->static_psymbols.list + pst->statics_offset);
1630 if (global) /* This means we can use a binary search. */
1632 do_linear_search = 0;
1634 /* Binary search. This search is guaranteed to end with center
1635 pointing at the earliest partial symbol whose name might be
1636 correct. At that point *all* partial symbols with an
1637 appropriate name will be checked against the correct
1641 top = start + length - 1;
1643 while (top > bottom)
1645 center = bottom + (top - bottom) / 2;
1646 if (!(center < top))
1647 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
1648 if (!do_linear_search
1649 && (SYMBOL_LANGUAGE (*center) == language_java))
1651 do_linear_search = 1;
1653 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0)
1659 bottom = center + 1;
1662 if (!(top == bottom))
1663 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
1665 while (top <= real_top
1666 && (linkage_name != NULL
1667 ? strcmp (SYMBOL_LINKAGE_NAME (*top), linkage_name) == 0
1668 : SYMBOL_MATCHES_SEARCH_NAME (*top,name)))
1670 if (SYMBOL_DOMAIN (*top) == domain)
1678 /* Can't use a binary search or else we found during the binary search that
1679 we should also do a linear search. */
1681 if (do_linear_search)
1683 for (psym = start; psym < start + length; psym++)
1685 if (domain == SYMBOL_DOMAIN (*psym))
1687 if (linkage_name != NULL
1688 ? strcmp (SYMBOL_LINKAGE_NAME (*psym), linkage_name) == 0
1689 : SYMBOL_MATCHES_SEARCH_NAME (*psym, name))
1700 /* Look up a type named NAME in the struct_domain. The type returned
1701 must not be opaque -- i.e., must have at least one field
1705 lookup_transparent_type (const char *name)
1707 return current_language->la_lookup_transparent_type (name);
1710 /* The standard implementation of lookup_transparent_type. This code
1711 was modeled on lookup_symbol -- the parts not relevant to looking
1712 up types were just left out. In particular it's assumed here that
1713 types are available in struct_domain and only at file-static or
1717 basic_lookup_transparent_type (const char *name)
1720 struct symtab *s = NULL;
1721 struct partial_symtab *ps;
1722 struct blockvector *bv;
1723 struct objfile *objfile;
1724 struct block *block;
1726 /* Now search all the global symbols. Do the symtab's first, then
1727 check the psymtab's. If a psymtab indicates the existence
1728 of the desired name as a global, then do psymtab-to-symtab
1729 conversion on the fly and return the found symbol. */
1731 ALL_PRIMARY_SYMTABS (objfile, s)
1733 bv = BLOCKVECTOR (s);
1734 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1735 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1736 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1738 return SYMBOL_TYPE (sym);
1742 ALL_PSYMTABS (objfile, ps)
1744 if (!ps->readin && lookup_partial_symbol (ps, name, NULL,
1747 s = PSYMTAB_TO_SYMTAB (ps);
1748 bv = BLOCKVECTOR (s);
1749 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1750 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1753 /* This shouldn't be necessary, but as a last resort
1754 * try looking in the statics even though the psymtab
1755 * claimed the symbol was global. It's possible that
1756 * the psymtab gets it wrong in some cases.
1758 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1759 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1761 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1762 %s may be an inlined function, or may be a template function\n\
1763 (if a template, try specifying an instantiation: %s<type>)."),
1764 name, ps->filename, name, name);
1766 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1767 return SYMBOL_TYPE (sym);
1771 /* Now search the static file-level symbols.
1772 Not strictly correct, but more useful than an error.
1773 Do the symtab's first, then
1774 check the psymtab's. If a psymtab indicates the existence
1775 of the desired name as a file-level static, then do psymtab-to-symtab
1776 conversion on the fly and return the found symbol.
1779 ALL_PRIMARY_SYMTABS (objfile, s)
1781 bv = BLOCKVECTOR (s);
1782 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1783 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1784 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1786 return SYMBOL_TYPE (sym);
1790 ALL_PSYMTABS (objfile, ps)
1792 if (!ps->readin && lookup_partial_symbol (ps, name, NULL, 0, STRUCT_DOMAIN))
1794 s = PSYMTAB_TO_SYMTAB (ps);
1795 bv = BLOCKVECTOR (s);
1796 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1797 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1800 /* This shouldn't be necessary, but as a last resort
1801 * try looking in the globals even though the psymtab
1802 * claimed the symbol was static. It's possible that
1803 * the psymtab gets it wrong in some cases.
1805 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1806 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1808 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1809 %s may be an inlined function, or may be a template function\n\
1810 (if a template, try specifying an instantiation: %s<type>)."),
1811 name, ps->filename, name, name);
1813 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1814 return SYMBOL_TYPE (sym);
1817 return (struct type *) 0;
1821 /* Find the psymtab containing main(). */
1822 /* FIXME: What about languages without main() or specially linked
1823 executables that have no main() ? */
1825 struct partial_symtab *
1826 find_main_psymtab (void)
1828 struct partial_symtab *pst;
1829 struct objfile *objfile;
1831 ALL_PSYMTABS (objfile, pst)
1833 if (lookup_partial_symbol (pst, main_name (), NULL, 1, VAR_DOMAIN))
1841 /* Search BLOCK for symbol NAME in DOMAIN.
1843 Note that if NAME is the demangled form of a C++ symbol, we will fail
1844 to find a match during the binary search of the non-encoded names, but
1845 for now we don't worry about the slight inefficiency of looking for
1846 a match we'll never find, since it will go pretty quick. Once the
1847 binary search terminates, we drop through and do a straight linear
1848 search on the symbols. Each symbol which is marked as being a ObjC/C++
1849 symbol (language_cplus or language_objc set) has both the encoded and
1850 non-encoded names tested for a match.
1852 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1853 particular mangled name.
1857 lookup_block_symbol (const struct block *block, const char *name,
1858 const char *linkage_name,
1859 const domain_enum domain)
1861 struct dict_iterator iter;
1864 if (!BLOCK_FUNCTION (block))
1866 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1868 sym = dict_iter_name_next (name, &iter))
1870 if (SYMBOL_DOMAIN (sym) == domain
1871 && (linkage_name != NULL
1872 ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
1879 /* Note that parameter symbols do not always show up last in the
1880 list; this loop makes sure to take anything else other than
1881 parameter symbols first; it only uses parameter symbols as a
1882 last resort. Note that this only takes up extra computation
1885 struct symbol *sym_found = NULL;
1887 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1889 sym = dict_iter_name_next (name, &iter))
1891 if (SYMBOL_DOMAIN (sym) == domain
1892 && (linkage_name != NULL
1893 ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
1896 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1897 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1898 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1899 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1900 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1901 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG &&
1902 SYMBOL_CLASS (sym) != LOC_COMPUTED_ARG)
1908 return (sym_found); /* Will be NULL if not found. */
1912 /* Find the symtab associated with PC and SECTION. Look through the
1913 psymtabs and read in another symtab if necessary. */
1916 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1919 struct blockvector *bv;
1920 struct symtab *s = NULL;
1921 struct symtab *best_s = NULL;
1922 struct partial_symtab *ps;
1923 struct objfile *objfile;
1924 CORE_ADDR distance = 0;
1925 struct minimal_symbol *msymbol;
1927 /* If we know that this is not a text address, return failure. This is
1928 necessary because we loop based on the block's high and low code
1929 addresses, which do not include the data ranges, and because
1930 we call find_pc_sect_psymtab which has a similar restriction based
1931 on the partial_symtab's texthigh and textlow. */
1932 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1934 && (msymbol->type == mst_data
1935 || msymbol->type == mst_bss
1936 || msymbol->type == mst_abs
1937 || msymbol->type == mst_file_data
1938 || msymbol->type == mst_file_bss))
1941 /* Search all symtabs for the one whose file contains our address, and which
1942 is the smallest of all the ones containing the address. This is designed
1943 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1944 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1945 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1947 This happens for native ecoff format, where code from included files
1948 gets its own symtab. The symtab for the included file should have
1949 been read in already via the dependency mechanism.
1950 It might be swifter to create several symtabs with the same name
1951 like xcoff does (I'm not sure).
1953 It also happens for objfiles that have their functions reordered.
1954 For these, the symtab we are looking for is not necessarily read in. */
1956 ALL_PRIMARY_SYMTABS (objfile, s)
1958 bv = BLOCKVECTOR (s);
1959 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1961 if (BLOCK_START (b) <= pc
1962 && BLOCK_END (b) > pc
1964 || BLOCK_END (b) - BLOCK_START (b) < distance))
1966 /* For an objfile that has its functions reordered,
1967 find_pc_psymtab will find the proper partial symbol table
1968 and we simply return its corresponding symtab. */
1969 /* In order to better support objfiles that contain both
1970 stabs and coff debugging info, we continue on if a psymtab
1972 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1974 ps = find_pc_sect_psymtab (pc, section);
1976 return PSYMTAB_TO_SYMTAB (ps);
1980 struct dict_iterator iter;
1981 struct symbol *sym = NULL;
1983 ALL_BLOCK_SYMBOLS (b, iter, sym)
1985 fixup_symbol_section (sym, objfile);
1986 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym), section))
1990 continue; /* no symbol in this symtab matches section */
1992 distance = BLOCK_END (b) - BLOCK_START (b);
2001 ps = find_pc_sect_psymtab (pc, section);
2005 /* Might want to error() here (in case symtab is corrupt and
2006 will cause a core dump), but maybe we can successfully
2007 continue, so let's not. */
2009 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
2011 s = PSYMTAB_TO_SYMTAB (ps);
2016 /* Find the symtab associated with PC. Look through the psymtabs and
2017 read in another symtab if necessary. Backward compatibility, no section */
2020 find_pc_symtab (CORE_ADDR pc)
2022 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
2026 /* Find the source file and line number for a given PC value and SECTION.
2027 Return a structure containing a symtab pointer, a line number,
2028 and a pc range for the entire source line.
2029 The value's .pc field is NOT the specified pc.
2030 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2031 use the line that ends there. Otherwise, in that case, the line
2032 that begins there is used. */
2034 /* The big complication here is that a line may start in one file, and end just
2035 before the start of another file. This usually occurs when you #include
2036 code in the middle of a subroutine. To properly find the end of a line's PC
2037 range, we must search all symtabs associated with this compilation unit, and
2038 find the one whose first PC is closer than that of the next line in this
2041 /* If it's worth the effort, we could be using a binary search. */
2043 struct symtab_and_line
2044 find_pc_sect_line (CORE_ADDR pc, struct bfd_section *section, int notcurrent)
2047 struct linetable *l;
2050 struct linetable_entry *item;
2051 struct symtab_and_line val;
2052 struct blockvector *bv;
2053 struct minimal_symbol *msymbol;
2054 struct minimal_symbol *mfunsym;
2056 /* Info on best line seen so far, and where it starts, and its file. */
2058 struct linetable_entry *best = NULL;
2059 CORE_ADDR best_end = 0;
2060 struct symtab *best_symtab = 0;
2062 /* Store here the first line number
2063 of a file which contains the line at the smallest pc after PC.
2064 If we don't find a line whose range contains PC,
2065 we will use a line one less than this,
2066 with a range from the start of that file to the first line's pc. */
2067 struct linetable_entry *alt = NULL;
2068 struct symtab *alt_symtab = 0;
2070 /* Info on best line seen in this file. */
2072 struct linetable_entry *prev;
2074 /* If this pc is not from the current frame,
2075 it is the address of the end of a call instruction.
2076 Quite likely that is the start of the following statement.
2077 But what we want is the statement containing the instruction.
2078 Fudge the pc to make sure we get that. */
2080 init_sal (&val); /* initialize to zeroes */
2082 /* It's tempting to assume that, if we can't find debugging info for
2083 any function enclosing PC, that we shouldn't search for line
2084 number info, either. However, GAS can emit line number info for
2085 assembly files --- very helpful when debugging hand-written
2086 assembly code. In such a case, we'd have no debug info for the
2087 function, but we would have line info. */
2092 /* elz: added this because this function returned the wrong
2093 information if the pc belongs to a stub (import/export)
2094 to call a shlib function. This stub would be anywhere between
2095 two functions in the target, and the line info was erroneously
2096 taken to be the one of the line before the pc.
2098 /* RT: Further explanation:
2100 * We have stubs (trampolines) inserted between procedures.
2102 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2103 * exists in the main image.
2105 * In the minimal symbol table, we have a bunch of symbols
2106 * sorted by start address. The stubs are marked as "trampoline",
2107 * the others appear as text. E.g.:
2109 * Minimal symbol table for main image
2110 * main: code for main (text symbol)
2111 * shr1: stub (trampoline symbol)
2112 * foo: code for foo (text symbol)
2114 * Minimal symbol table for "shr1" image:
2116 * shr1: code for shr1 (text symbol)
2119 * So the code below is trying to detect if we are in the stub
2120 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2121 * and if found, do the symbolization from the real-code address
2122 * rather than the stub address.
2124 * Assumptions being made about the minimal symbol table:
2125 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2126 * if we're really in the trampoline. If we're beyond it (say
2127 * we're in "foo" in the above example), it'll have a closer
2128 * symbol (the "foo" text symbol for example) and will not
2129 * return the trampoline.
2130 * 2. lookup_minimal_symbol_text() will find a real text symbol
2131 * corresponding to the trampoline, and whose address will
2132 * be different than the trampoline address. I put in a sanity
2133 * check for the address being the same, to avoid an
2134 * infinite recursion.
2136 msymbol = lookup_minimal_symbol_by_pc (pc);
2137 if (msymbol != NULL)
2138 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
2140 mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol),
2142 if (mfunsym == NULL)
2143 /* I eliminated this warning since it is coming out
2144 * in the following situation:
2145 * gdb shmain // test program with shared libraries
2146 * (gdb) break shr1 // function in shared lib
2147 * Warning: In stub for ...
2148 * In the above situation, the shared lib is not loaded yet,
2149 * so of course we can't find the real func/line info,
2150 * but the "break" still works, and the warning is annoying.
2151 * So I commented out the warning. RT */
2152 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2154 else if (SYMBOL_VALUE_ADDRESS (mfunsym) == SYMBOL_VALUE_ADDRESS (msymbol))
2155 /* Avoid infinite recursion */
2156 /* See above comment about why warning is commented out */
2157 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2160 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym), 0);
2164 s = find_pc_sect_symtab (pc, section);
2167 /* if no symbol information, return previous pc */
2174 bv = BLOCKVECTOR (s);
2176 /* Look at all the symtabs that share this blockvector.
2177 They all have the same apriori range, that we found was right;
2178 but they have different line tables. */
2180 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
2182 /* Find the best line in this symtab. */
2189 /* I think len can be zero if the symtab lacks line numbers
2190 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2191 I'm not sure which, and maybe it depends on the symbol
2197 item = l->item; /* Get first line info */
2199 /* Is this file's first line closer than the first lines of other files?
2200 If so, record this file, and its first line, as best alternate. */
2201 if (item->pc > pc && (!alt || item->pc < alt->pc))
2207 for (i = 0; i < len; i++, item++)
2209 /* Leave prev pointing to the linetable entry for the last line
2210 that started at or before PC. */
2217 /* At this point, prev points at the line whose start addr is <= pc, and
2218 item points at the next line. If we ran off the end of the linetable
2219 (pc >= start of the last line), then prev == item. If pc < start of
2220 the first line, prev will not be set. */
2222 /* Is this file's best line closer than the best in the other files?
2223 If so, record this file, and its best line, as best so far. Don't
2224 save prev if it represents the end of a function (i.e. line number
2225 0) instead of a real line. */
2227 if (prev && prev->line && (!best || prev->pc > best->pc))
2232 /* Discard BEST_END if it's before the PC of the current BEST. */
2233 if (best_end <= best->pc)
2237 /* If another line (denoted by ITEM) is in the linetable and its
2238 PC is after BEST's PC, but before the current BEST_END, then
2239 use ITEM's PC as the new best_end. */
2240 if (best && i < len && item->pc > best->pc
2241 && (best_end == 0 || best_end > item->pc))
2242 best_end = item->pc;
2247 /* If we didn't find any line number info, just return zeros.
2248 We used to return alt->line - 1 here, but that could be
2249 anywhere; if we don't have line number info for this PC,
2250 don't make some up. */
2253 else if (best->line == 0)
2255 /* If our best fit is in a range of PC's for which no line
2256 number info is available (line number is zero) then we didn't
2257 find any valid line information. */
2262 val.symtab = best_symtab;
2263 val.line = best->line;
2265 if (best_end && (!alt || best_end < alt->pc))
2270 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2272 val.section = section;
2276 /* Backward compatibility (no section) */
2278 struct symtab_and_line
2279 find_pc_line (CORE_ADDR pc, int notcurrent)
2283 section = find_pc_overlay (pc);
2284 if (pc_in_unmapped_range (pc, section))
2285 pc = overlay_mapped_address (pc, section);
2286 return find_pc_sect_line (pc, section, notcurrent);
2289 /* Find line number LINE in any symtab whose name is the same as
2292 If found, return the symtab that contains the linetable in which it was
2293 found, set *INDEX to the index in the linetable of the best entry
2294 found, and set *EXACT_MATCH nonzero if the value returned is an
2297 If not found, return NULL. */
2300 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2304 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2308 struct linetable *best_linetable;
2309 struct symtab *best_symtab;
2311 /* First try looking it up in the given symtab. */
2312 best_linetable = LINETABLE (symtab);
2313 best_symtab = symtab;
2314 best_index = find_line_common (best_linetable, line, &exact);
2315 if (best_index < 0 || !exact)
2317 /* Didn't find an exact match. So we better keep looking for
2318 another symtab with the same name. In the case of xcoff,
2319 multiple csects for one source file (produced by IBM's FORTRAN
2320 compiler) produce multiple symtabs (this is unavoidable
2321 assuming csects can be at arbitrary places in memory and that
2322 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2324 /* BEST is the smallest linenumber > LINE so far seen,
2325 or 0 if none has been seen so far.
2326 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2329 struct objfile *objfile;
2331 struct partial_symtab *p;
2333 if (best_index >= 0)
2334 best = best_linetable->item[best_index].line;
2338 ALL_PSYMTABS (objfile, p)
2340 if (strcmp (symtab->filename, p->filename) != 0)
2342 PSYMTAB_TO_SYMTAB (p);
2345 ALL_SYMTABS (objfile, s)
2347 struct linetable *l;
2350 if (strcmp (symtab->filename, s->filename) != 0)
2353 ind = find_line_common (l, line, &exact);
2363 if (best == 0 || l->item[ind].line < best)
2365 best = l->item[ind].line;
2378 *index = best_index;
2380 *exact_match = exact;
2385 /* Set the PC value for a given source file and line number and return true.
2386 Returns zero for invalid line number (and sets the PC to 0).
2387 The source file is specified with a struct symtab. */
2390 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2392 struct linetable *l;
2399 symtab = find_line_symtab (symtab, line, &ind, NULL);
2402 l = LINETABLE (symtab);
2403 *pc = l->item[ind].pc;
2410 /* Find the range of pc values in a line.
2411 Store the starting pc of the line into *STARTPTR
2412 and the ending pc (start of next line) into *ENDPTR.
2413 Returns 1 to indicate success.
2414 Returns 0 if could not find the specified line. */
2417 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2420 CORE_ADDR startaddr;
2421 struct symtab_and_line found_sal;
2424 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2427 /* This whole function is based on address. For example, if line 10 has
2428 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2429 "info line *0x123" should say the line goes from 0x100 to 0x200
2430 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2431 This also insures that we never give a range like "starts at 0x134
2432 and ends at 0x12c". */
2434 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2435 if (found_sal.line != sal.line)
2437 /* The specified line (sal) has zero bytes. */
2438 *startptr = found_sal.pc;
2439 *endptr = found_sal.pc;
2443 *startptr = found_sal.pc;
2444 *endptr = found_sal.end;
2449 /* Given a line table and a line number, return the index into the line
2450 table for the pc of the nearest line whose number is >= the specified one.
2451 Return -1 if none is found. The value is >= 0 if it is an index.
2453 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2456 find_line_common (struct linetable *l, int lineno,
2462 /* BEST is the smallest linenumber > LINENO so far seen,
2463 or 0 if none has been seen so far.
2464 BEST_INDEX identifies the item for it. */
2466 int best_index = -1;
2477 for (i = 0; i < len; i++)
2479 struct linetable_entry *item = &(l->item[i]);
2481 if (item->line == lineno)
2483 /* Return the first (lowest address) entry which matches. */
2488 if (item->line > lineno && (best == 0 || item->line < best))
2495 /* If we got here, we didn't get an exact match. */
2500 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2502 struct symtab_and_line sal;
2503 sal = find_pc_line (pc, 0);
2506 return sal.symtab != 0;
2509 /* Given a function symbol SYM, find the symtab and line for the start
2511 If the argument FUNFIRSTLINE is nonzero, we want the first line
2512 of real code inside the function. */
2514 struct symtab_and_line
2515 find_function_start_sal (struct symbol *sym, int funfirstline)
2518 struct symtab_and_line sal;
2520 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2521 fixup_symbol_section (sym, NULL);
2523 { /* skip "first line" of function (which is actually its prologue) */
2524 asection *section = SYMBOL_BFD_SECTION (sym);
2525 /* If function is in an unmapped overlay, use its unmapped LMA
2526 address, so that gdbarch_skip_prologue has something unique to work
2528 if (section_is_overlay (section) &&
2529 !section_is_mapped (section))
2530 pc = overlay_unmapped_address (pc, section);
2532 pc += gdbarch_deprecated_function_start_offset (current_gdbarch);
2533 pc = gdbarch_skip_prologue (current_gdbarch, pc);
2535 /* For overlays, map pc back into its mapped VMA range */
2536 pc = overlay_mapped_address (pc, section);
2538 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2540 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2541 line is still part of the same function. */
2543 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2544 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2546 /* First pc of next line */
2548 /* Recalculate the line number (might not be N+1). */
2549 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2556 /* If P is of the form "operator[ \t]+..." where `...' is
2557 some legitimate operator text, return a pointer to the
2558 beginning of the substring of the operator text.
2559 Otherwise, return "". */
2561 operator_chars (char *p, char **end)
2564 if (strncmp (p, "operator", 8))
2568 /* Don't get faked out by `operator' being part of a longer
2570 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2573 /* Allow some whitespace between `operator' and the operator symbol. */
2574 while (*p == ' ' || *p == '\t')
2577 /* Recognize 'operator TYPENAME'. */
2579 if (isalpha (*p) || *p == '_' || *p == '$')
2582 while (isalnum (*q) || *q == '_' || *q == '$')
2591 case '\\': /* regexp quoting */
2594 if (p[2] == '=') /* 'operator\*=' */
2596 else /* 'operator\*' */
2600 else if (p[1] == '[')
2603 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2604 else if (p[2] == '\\' && p[3] == ']')
2606 *end = p + 4; /* 'operator\[\]' */
2610 error (_("nothing is allowed between '[' and ']'"));
2614 /* Gratuitous qoute: skip it and move on. */
2636 if (p[0] == '-' && p[1] == '>')
2638 /* Struct pointer member operator 'operator->'. */
2641 *end = p + 3; /* 'operator->*' */
2644 else if (p[2] == '\\')
2646 *end = p + 4; /* Hopefully 'operator->\*' */
2651 *end = p + 2; /* 'operator->' */
2655 if (p[1] == '=' || p[1] == p[0])
2666 error (_("`operator ()' must be specified without whitespace in `()'"));
2671 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2676 error (_("`operator []' must be specified without whitespace in `[]'"));
2680 error (_("`operator %s' not supported"), p);
2689 /* If FILE is not already in the table of files, return zero;
2690 otherwise return non-zero. Optionally add FILE to the table if ADD
2691 is non-zero. If *FIRST is non-zero, forget the old table
2694 filename_seen (const char *file, int add, int *first)
2696 /* Table of files seen so far. */
2697 static const char **tab = NULL;
2698 /* Allocated size of tab in elements.
2699 Start with one 256-byte block (when using GNU malloc.c).
2700 24 is the malloc overhead when range checking is in effect. */
2701 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2702 /* Current size of tab in elements. */
2703 static int tab_cur_size;
2709 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2713 /* Is FILE in tab? */
2714 for (p = tab; p < tab + tab_cur_size; p++)
2715 if (strcmp (*p, file) == 0)
2718 /* No; maybe add it to tab. */
2721 if (tab_cur_size == tab_alloc_size)
2723 tab_alloc_size *= 2;
2724 tab = (const char **) xrealloc ((char *) tab,
2725 tab_alloc_size * sizeof (*tab));
2727 tab[tab_cur_size++] = file;
2733 /* Slave routine for sources_info. Force line breaks at ,'s.
2734 NAME is the name to print and *FIRST is nonzero if this is the first
2735 name printed. Set *FIRST to zero. */
2737 output_source_filename (const char *name, int *first)
2739 /* Since a single source file can result in several partial symbol
2740 tables, we need to avoid printing it more than once. Note: if
2741 some of the psymtabs are read in and some are not, it gets
2742 printed both under "Source files for which symbols have been
2743 read" and "Source files for which symbols will be read in on
2744 demand". I consider this a reasonable way to deal with the
2745 situation. I'm not sure whether this can also happen for
2746 symtabs; it doesn't hurt to check. */
2748 /* Was NAME already seen? */
2749 if (filename_seen (name, 1, first))
2751 /* Yes; don't print it again. */
2754 /* No; print it and reset *FIRST. */
2761 printf_filtered (", ");
2765 fputs_filtered (name, gdb_stdout);
2769 sources_info (char *ignore, int from_tty)
2772 struct partial_symtab *ps;
2773 struct objfile *objfile;
2776 if (!have_full_symbols () && !have_partial_symbols ())
2778 error (_("No symbol table is loaded. Use the \"file\" command."));
2781 printf_filtered ("Source files for which symbols have been read in:\n\n");
2784 ALL_SYMTABS (objfile, s)
2786 const char *fullname = symtab_to_fullname (s);
2787 output_source_filename (fullname ? fullname : s->filename, &first);
2789 printf_filtered ("\n\n");
2791 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2794 ALL_PSYMTABS (objfile, ps)
2798 const char *fullname = psymtab_to_fullname (ps);
2799 output_source_filename (fullname ? fullname : ps->filename, &first);
2802 printf_filtered ("\n");
2806 file_matches (char *file, char *files[], int nfiles)
2810 if (file != NULL && nfiles != 0)
2812 for (i = 0; i < nfiles; i++)
2814 if (strcmp (files[i], lbasename (file)) == 0)
2818 else if (nfiles == 0)
2823 /* Free any memory associated with a search. */
2825 free_search_symbols (struct symbol_search *symbols)
2827 struct symbol_search *p;
2828 struct symbol_search *next;
2830 for (p = symbols; p != NULL; p = next)
2838 do_free_search_symbols_cleanup (void *symbols)
2840 free_search_symbols (symbols);
2844 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2846 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2849 /* Helper function for sort_search_symbols and qsort. Can only
2850 sort symbols, not minimal symbols. */
2852 compare_search_syms (const void *sa, const void *sb)
2854 struct symbol_search **sym_a = (struct symbol_search **) sa;
2855 struct symbol_search **sym_b = (struct symbol_search **) sb;
2857 return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol),
2858 SYMBOL_PRINT_NAME ((*sym_b)->symbol));
2861 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2862 prevtail where it is, but update its next pointer to point to
2863 the first of the sorted symbols. */
2864 static struct symbol_search *
2865 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2867 struct symbol_search **symbols, *symp, *old_next;
2870 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2872 symp = prevtail->next;
2873 for (i = 0; i < nfound; i++)
2878 /* Generally NULL. */
2881 qsort (symbols, nfound, sizeof (struct symbol_search *),
2882 compare_search_syms);
2885 for (i = 0; i < nfound; i++)
2887 symp->next = symbols[i];
2890 symp->next = old_next;
2896 /* Search the symbol table for matches to the regular expression REGEXP,
2897 returning the results in *MATCHES.
2899 Only symbols of KIND are searched:
2900 FUNCTIONS_DOMAIN - search all functions
2901 TYPES_DOMAIN - search all type names
2902 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2903 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2904 and constants (enums)
2906 free_search_symbols should be called when *MATCHES is no longer needed.
2908 The results are sorted locally; each symtab's global and static blocks are
2909 separately alphabetized.
2912 search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[],
2913 struct symbol_search **matches)
2916 struct partial_symtab *ps;
2917 struct blockvector *bv;
2920 struct dict_iterator iter;
2922 struct partial_symbol **psym;
2923 struct objfile *objfile;
2924 struct minimal_symbol *msymbol;
2927 static enum minimal_symbol_type types[]
2929 {mst_data, mst_text, mst_abs, mst_unknown};
2930 static enum minimal_symbol_type types2[]
2932 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2933 static enum minimal_symbol_type types3[]
2935 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2936 static enum minimal_symbol_type types4[]
2938 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2939 enum minimal_symbol_type ourtype;
2940 enum minimal_symbol_type ourtype2;
2941 enum minimal_symbol_type ourtype3;
2942 enum minimal_symbol_type ourtype4;
2943 struct symbol_search *sr;
2944 struct symbol_search *psr;
2945 struct symbol_search *tail;
2946 struct cleanup *old_chain = NULL;
2948 if (kind < VARIABLES_DOMAIN)
2949 error (_("must search on specific domain"));
2951 ourtype = types[(int) (kind - VARIABLES_DOMAIN)];
2952 ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)];
2953 ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)];
2954 ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)];
2956 sr = *matches = NULL;
2961 /* Make sure spacing is right for C++ operators.
2962 This is just a courtesy to make the matching less sensitive
2963 to how many spaces the user leaves between 'operator'
2964 and <TYPENAME> or <OPERATOR>. */
2966 char *opname = operator_chars (regexp, &opend);
2969 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2970 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2972 /* There should 1 space between 'operator' and 'TYPENAME'. */
2973 if (opname[-1] != ' ' || opname[-2] == ' ')
2978 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2979 if (opname[-1] == ' ')
2982 /* If wrong number of spaces, fix it. */
2985 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2986 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2991 if (0 != (val = re_comp (regexp)))
2992 error (_("Invalid regexp (%s): %s"), val, regexp);
2995 /* Search through the partial symtabs *first* for all symbols
2996 matching the regexp. That way we don't have to reproduce all of
2997 the machinery below. */
2999 ALL_PSYMTABS (objfile, ps)
3001 struct partial_symbol **bound, **gbound, **sbound;
3007 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
3008 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
3011 /* Go through all of the symbols stored in a partial
3012 symtab in one loop. */
3013 psym = objfile->global_psymbols.list + ps->globals_offset;
3018 if (bound == gbound && ps->n_static_syms != 0)
3020 psym = objfile->static_psymbols.list + ps->statics_offset;
3031 /* If it would match (logic taken from loop below)
3032 load the file and go on to the next one. We check the
3033 filename here, but that's a bit bogus: we don't know
3034 what file it really comes from until we have full
3035 symtabs. The symbol might be in a header file included by
3036 this psymtab. This only affects Insight. */
3037 if (file_matches (ps->filename, files, nfiles)
3039 || re_exec (SYMBOL_NATURAL_NAME (*psym)) != 0)
3040 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
3041 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
3042 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK)
3043 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
3044 || (kind == METHODS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
3046 PSYMTAB_TO_SYMTAB (ps);
3054 /* Here, we search through the minimal symbol tables for functions
3055 and variables that match, and force their symbols to be read.
3056 This is in particular necessary for demangled variable names,
3057 which are no longer put into the partial symbol tables.
3058 The symbol will then be found during the scan of symtabs below.
3060 For functions, find_pc_symtab should succeed if we have debug info
3061 for the function, for variables we have to call lookup_symbol
3062 to determine if the variable has debug info.
3063 If the lookup fails, set found_misc so that we will rescan to print
3064 any matching symbols without debug info.
3067 if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN))
3069 ALL_MSYMBOLS (objfile, msymbol)
3071 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3072 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3073 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3074 MSYMBOL_TYPE (msymbol) == ourtype4)
3077 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
3079 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
3081 /* FIXME: carlton/2003-02-04: Given that the
3082 semantics of lookup_symbol keeps on changing
3083 slightly, it would be a nice idea if we had a
3084 function lookup_symbol_minsym that found the
3085 symbol associated to a given minimal symbol (if
3087 if (kind == FUNCTIONS_DOMAIN
3088 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
3089 (struct block *) NULL,
3091 0, (struct symtab **) NULL)
3100 ALL_PRIMARY_SYMTABS (objfile, s)
3102 bv = BLOCKVECTOR (s);
3103 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
3105 struct symbol_search *prevtail = tail;
3107 b = BLOCKVECTOR_BLOCK (bv, i);
3108 ALL_BLOCK_SYMBOLS (b, iter, sym)
3110 struct symtab *real_symtab = SYMBOL_SYMTAB (sym);
3113 if (file_matches (real_symtab->filename, files, nfiles)
3115 || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0)
3116 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF
3117 && SYMBOL_CLASS (sym) != LOC_BLOCK
3118 && SYMBOL_CLASS (sym) != LOC_CONST)
3119 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK)
3120 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3121 || (kind == METHODS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK))))
3124 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3126 psr->symtab = real_symtab;
3128 psr->msymbol = NULL;
3140 if (prevtail == NULL)
3142 struct symbol_search dummy;
3145 tail = sort_search_symbols (&dummy, nfound);
3148 old_chain = make_cleanup_free_search_symbols (sr);
3151 tail = sort_search_symbols (prevtail, nfound);
3156 /* If there are no eyes, avoid all contact. I mean, if there are
3157 no debug symbols, then print directly from the msymbol_vector. */
3159 if (found_misc || kind != FUNCTIONS_DOMAIN)
3161 ALL_MSYMBOLS (objfile, msymbol)
3163 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3164 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3165 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3166 MSYMBOL_TYPE (msymbol) == ourtype4)
3169 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
3171 /* Functions: Look up by address. */
3172 if (kind != FUNCTIONS_DOMAIN ||
3173 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
3175 /* Variables/Absolutes: Look up by name */
3176 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
3177 (struct block *) NULL, VAR_DOMAIN,
3178 0, (struct symtab **) NULL) == NULL)
3181 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3183 psr->msymbol = msymbol;
3190 old_chain = make_cleanup_free_search_symbols (sr);
3204 discard_cleanups (old_chain);
3207 /* Helper function for symtab_symbol_info, this function uses
3208 the data returned from search_symbols() to print information
3209 regarding the match to gdb_stdout.
3212 print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym,
3213 int block, char *last)
3215 if (last == NULL || strcmp (last, s->filename) != 0)
3217 fputs_filtered ("\nFile ", gdb_stdout);
3218 fputs_filtered (s->filename, gdb_stdout);
3219 fputs_filtered (":\n", gdb_stdout);
3222 if (kind != TYPES_DOMAIN && block == STATIC_BLOCK)
3223 printf_filtered ("static ");
3225 /* Typedef that is not a C++ class */
3226 if (kind == TYPES_DOMAIN
3227 && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN)
3228 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
3229 /* variable, func, or typedef-that-is-c++-class */
3230 else if (kind < TYPES_DOMAIN ||
3231 (kind == TYPES_DOMAIN &&
3232 SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN))
3234 type_print (SYMBOL_TYPE (sym),
3235 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
3236 ? "" : SYMBOL_PRINT_NAME (sym)),
3239 printf_filtered (";\n");
3243 /* This help function for symtab_symbol_info() prints information
3244 for non-debugging symbols to gdb_stdout.
3247 print_msymbol_info (struct minimal_symbol *msymbol)
3251 if (gdbarch_addr_bit (current_gdbarch) <= 32)
3252 tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3253 & (CORE_ADDR) 0xffffffff,
3256 tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3258 printf_filtered ("%s %s\n",
3259 tmp, SYMBOL_PRINT_NAME (msymbol));
3262 /* This is the guts of the commands "info functions", "info types", and
3263 "info variables". It calls search_symbols to find all matches and then
3264 print_[m]symbol_info to print out some useful information about the
3268 symtab_symbol_info (char *regexp, domain_enum kind, int from_tty)
3270 static char *classnames[]
3272 {"variable", "function", "type", "method"};
3273 struct symbol_search *symbols;
3274 struct symbol_search *p;
3275 struct cleanup *old_chain;
3276 char *last_filename = NULL;
3279 /* must make sure that if we're interrupted, symbols gets freed */
3280 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3281 old_chain = make_cleanup_free_search_symbols (symbols);
3283 printf_filtered (regexp
3284 ? "All %ss matching regular expression \"%s\":\n"
3285 : "All defined %ss:\n",
3286 classnames[(int) (kind - VARIABLES_DOMAIN)], regexp);
3288 for (p = symbols; p != NULL; p = p->next)
3292 if (p->msymbol != NULL)
3296 printf_filtered ("\nNon-debugging symbols:\n");
3299 print_msymbol_info (p->msymbol);
3303 print_symbol_info (kind,
3308 last_filename = p->symtab->filename;
3312 do_cleanups (old_chain);
3316 variables_info (char *regexp, int from_tty)
3318 symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty);
3322 functions_info (char *regexp, int from_tty)
3324 symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty);
3329 types_info (char *regexp, int from_tty)
3331 symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty);
3334 /* Breakpoint all functions matching regular expression. */
3337 rbreak_command_wrapper (char *regexp, int from_tty)
3339 rbreak_command (regexp, from_tty);
3343 rbreak_command (char *regexp, int from_tty)
3345 struct symbol_search *ss;
3346 struct symbol_search *p;
3347 struct cleanup *old_chain;
3349 search_symbols (regexp, FUNCTIONS_DOMAIN, 0, (char **) NULL, &ss);
3350 old_chain = make_cleanup_free_search_symbols (ss);
3352 for (p = ss; p != NULL; p = p->next)
3354 if (p->msymbol == NULL)
3356 char *string = alloca (strlen (p->symtab->filename)
3357 + strlen (SYMBOL_LINKAGE_NAME (p->symbol))
3359 strcpy (string, p->symtab->filename);
3360 strcat (string, ":'");
3361 strcat (string, SYMBOL_LINKAGE_NAME (p->symbol));
3362 strcat (string, "'");
3363 break_command (string, from_tty);
3364 print_symbol_info (FUNCTIONS_DOMAIN,
3368 p->symtab->filename);
3372 char *string = alloca (strlen (SYMBOL_LINKAGE_NAME (p->msymbol))
3374 strcpy (string, "'");
3375 strcat (string, SYMBOL_LINKAGE_NAME (p->msymbol));
3376 strcat (string, "'");
3378 break_command (string, from_tty);
3379 printf_filtered ("<function, no debug info> %s;\n",
3380 SYMBOL_PRINT_NAME (p->msymbol));
3384 do_cleanups (old_chain);
3388 /* Helper routine for make_symbol_completion_list. */
3390 static int return_val_size;
3391 static int return_val_index;
3392 static char **return_val;
3394 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3395 completion_list_add_name \
3396 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3398 /* Test to see if the symbol specified by SYMNAME (which is already
3399 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3400 characters. If so, add it to the current completion list. */
3403 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3404 char *text, char *word)
3409 /* clip symbols that cannot match */
3411 if (strncmp (symname, sym_text, sym_text_len) != 0)
3416 /* We have a match for a completion, so add SYMNAME to the current list
3417 of matches. Note that the name is moved to freshly malloc'd space. */
3421 if (word == sym_text)
3423 new = xmalloc (strlen (symname) + 5);
3424 strcpy (new, symname);
3426 else if (word > sym_text)
3428 /* Return some portion of symname. */
3429 new = xmalloc (strlen (symname) + 5);
3430 strcpy (new, symname + (word - sym_text));
3434 /* Return some of SYM_TEXT plus symname. */
3435 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3436 strncpy (new, word, sym_text - word);
3437 new[sym_text - word] = '\0';
3438 strcat (new, symname);
3441 if (return_val_index + 3 > return_val_size)
3443 newsize = (return_val_size *= 2) * sizeof (char *);
3444 return_val = (char **) xrealloc ((char *) return_val, newsize);
3446 return_val[return_val_index++] = new;
3447 return_val[return_val_index] = NULL;
3451 /* ObjC: In case we are completing on a selector, look as the msymbol
3452 again and feed all the selectors into the mill. */
3455 completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text,
3456 int sym_text_len, char *text, char *word)
3458 static char *tmp = NULL;
3459 static unsigned int tmplen = 0;
3461 char *method, *category, *selector;
3464 method = SYMBOL_NATURAL_NAME (msymbol);
3466 /* Is it a method? */
3467 if ((method[0] != '-') && (method[0] != '+'))
3470 if (sym_text[0] == '[')
3471 /* Complete on shortened method method. */
3472 completion_list_add_name (method + 1, sym_text, sym_text_len, text, word);
3474 while ((strlen (method) + 1) >= tmplen)
3480 tmp = xrealloc (tmp, tmplen);
3482 selector = strchr (method, ' ');
3483 if (selector != NULL)
3486 category = strchr (method, '(');
3488 if ((category != NULL) && (selector != NULL))
3490 memcpy (tmp, method, (category - method));
3491 tmp[category - method] = ' ';
3492 memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1);
3493 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3494 if (sym_text[0] == '[')
3495 completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word);
3498 if (selector != NULL)
3500 /* Complete on selector only. */
3501 strcpy (tmp, selector);
3502 tmp2 = strchr (tmp, ']');
3506 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3510 /* Break the non-quoted text based on the characters which are in
3511 symbols. FIXME: This should probably be language-specific. */
3514 language_search_unquoted_string (char *text, char *p)
3516 for (; p > text; --p)
3518 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3522 if ((current_language->la_language == language_objc))
3524 if (p[-1] == ':') /* might be part of a method name */
3526 else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+'))
3527 p -= 2; /* beginning of a method name */
3528 else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')')
3529 { /* might be part of a method name */
3532 /* Seeing a ' ' or a '(' is not conclusive evidence
3533 that we are in the middle of a method name. However,
3534 finding "-[" or "+[" should be pretty un-ambiguous.
3535 Unfortunately we have to find it now to decide. */
3538 if (isalnum (t[-1]) || t[-1] == '_' ||
3539 t[-1] == ' ' || t[-1] == ':' ||
3540 t[-1] == '(' || t[-1] == ')')
3545 if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+'))
3546 p = t - 2; /* method name detected */
3547 /* else we leave with p unchanged */
3557 default_make_symbol_completion_list (char *text, char *word)
3559 /* Problem: All of the symbols have to be copied because readline
3560 frees them. I'm not going to worry about this; hopefully there
3561 won't be that many. */
3565 struct partial_symtab *ps;
3566 struct minimal_symbol *msymbol;
3567 struct objfile *objfile;
3568 struct block *b, *surrounding_static_block = 0;
3569 struct dict_iterator iter;
3571 struct partial_symbol **psym;
3572 /* The symbol we are completing on. Points in same buffer as text. */
3574 /* Length of sym_text. */
3577 /* Now look for the symbol we are supposed to complete on. */
3581 char *quote_pos = NULL;
3583 /* First see if this is a quoted string. */
3585 for (p = text; *p != '\0'; ++p)
3587 if (quote_found != '\0')
3589 if (*p == quote_found)
3590 /* Found close quote. */
3592 else if (*p == '\\' && p[1] == quote_found)
3593 /* A backslash followed by the quote character
3594 doesn't end the string. */
3597 else if (*p == '\'' || *p == '"')
3603 if (quote_found == '\'')
3604 /* A string within single quotes can be a symbol, so complete on it. */
3605 sym_text = quote_pos + 1;
3606 else if (quote_found == '"')
3607 /* A double-quoted string is never a symbol, nor does it make sense
3608 to complete it any other way. */
3610 return_val = (char **) xmalloc (sizeof (char *));
3611 return_val[0] = NULL;
3616 /* It is not a quoted string. Break it based on the characters
3617 which are in symbols. */
3620 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3629 sym_text_len = strlen (sym_text);
3631 return_val_size = 100;
3632 return_val_index = 0;
3633 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3634 return_val[0] = NULL;
3636 /* Look through the partial symtabs for all symbols which begin
3637 by matching SYM_TEXT. Add each one that you find to the list. */
3639 ALL_PSYMTABS (objfile, ps)
3641 /* If the psymtab's been read in we'll get it when we search
3642 through the blockvector. */
3646 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3647 psym < (objfile->global_psymbols.list + ps->globals_offset
3648 + ps->n_global_syms);
3651 /* If interrupted, then quit. */
3653 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3656 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3657 psym < (objfile->static_psymbols.list + ps->statics_offset
3658 + ps->n_static_syms);
3662 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3666 /* At this point scan through the misc symbol vectors and add each
3667 symbol you find to the list. Eventually we want to ignore
3668 anything that isn't a text symbol (everything else will be
3669 handled by the psymtab code above). */
3671 ALL_MSYMBOLS (objfile, msymbol)
3674 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3676 completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word);
3679 /* Search upwards from currently selected frame (so that we can
3680 complete on local vars. */
3682 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3684 if (!BLOCK_SUPERBLOCK (b))
3686 surrounding_static_block = b; /* For elmin of dups */
3689 /* Also catch fields of types defined in this places which match our
3690 text string. Only complete on types visible from current context. */
3692 ALL_BLOCK_SYMBOLS (b, iter, sym)
3695 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3696 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3698 struct type *t = SYMBOL_TYPE (sym);
3699 enum type_code c = TYPE_CODE (t);
3701 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3703 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3705 if (TYPE_FIELD_NAME (t, j))
3707 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3708 sym_text, sym_text_len, text, word);
3716 /* Go through the symtabs and check the externs and statics for
3717 symbols which match. */
3719 ALL_PRIMARY_SYMTABS (objfile, s)
3722 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3723 ALL_BLOCK_SYMBOLS (b, iter, sym)
3725 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3729 ALL_PRIMARY_SYMTABS (objfile, s)
3732 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3733 /* Don't do this block twice. */
3734 if (b == surrounding_static_block)
3736 ALL_BLOCK_SYMBOLS (b, iter, sym)
3738 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3742 return (return_val);
3745 /* Return a NULL terminated array of all symbols (regardless of class)
3746 which begin by matching TEXT. If the answer is no symbols, then
3747 the return value is an array which contains only a NULL pointer. */
3750 make_symbol_completion_list (char *text, char *word)
3752 return current_language->la_make_symbol_completion_list (text, word);
3755 /* Like make_symbol_completion_list, but returns a list of symbols
3756 defined in a source file FILE. */
3759 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3764 struct dict_iterator iter;
3765 /* The symbol we are completing on. Points in same buffer as text. */
3767 /* Length of sym_text. */
3770 /* Now look for the symbol we are supposed to complete on.
3771 FIXME: This should be language-specific. */
3775 char *quote_pos = NULL;
3777 /* First see if this is a quoted string. */
3779 for (p = text; *p != '\0'; ++p)
3781 if (quote_found != '\0')
3783 if (*p == quote_found)
3784 /* Found close quote. */
3786 else if (*p == '\\' && p[1] == quote_found)
3787 /* A backslash followed by the quote character
3788 doesn't end the string. */
3791 else if (*p == '\'' || *p == '"')
3797 if (quote_found == '\'')
3798 /* A string within single quotes can be a symbol, so complete on it. */
3799 sym_text = quote_pos + 1;
3800 else if (quote_found == '"')
3801 /* A double-quoted string is never a symbol, nor does it make sense
3802 to complete it any other way. */
3804 return_val = (char **) xmalloc (sizeof (char *));
3805 return_val[0] = NULL;
3810 /* Not a quoted string. */
3811 sym_text = language_search_unquoted_string (text, p);
3815 sym_text_len = strlen (sym_text);
3817 return_val_size = 10;
3818 return_val_index = 0;
3819 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3820 return_val[0] = NULL;
3822 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3824 s = lookup_symtab (srcfile);
3827 /* Maybe they typed the file with leading directories, while the
3828 symbol tables record only its basename. */
3829 const char *tail = lbasename (srcfile);
3832 s = lookup_symtab (tail);
3835 /* If we have no symtab for that file, return an empty list. */
3837 return (return_val);
3839 /* Go through this symtab and check the externs and statics for
3840 symbols which match. */
3842 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3843 ALL_BLOCK_SYMBOLS (b, iter, sym)
3845 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3848 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3849 ALL_BLOCK_SYMBOLS (b, iter, sym)
3851 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3854 return (return_val);
3857 /* A helper function for make_source_files_completion_list. It adds
3858 another file name to a list of possible completions, growing the
3859 list as necessary. */
3862 add_filename_to_list (const char *fname, char *text, char *word,
3863 char ***list, int *list_used, int *list_alloced)
3866 size_t fnlen = strlen (fname);
3868 if (*list_used + 1 >= *list_alloced)
3871 *list = (char **) xrealloc ((char *) *list,
3872 *list_alloced * sizeof (char *));
3877 /* Return exactly fname. */
3878 new = xmalloc (fnlen + 5);
3879 strcpy (new, fname);
3881 else if (word > text)
3883 /* Return some portion of fname. */
3884 new = xmalloc (fnlen + 5);
3885 strcpy (new, fname + (word - text));
3889 /* Return some of TEXT plus fname. */
3890 new = xmalloc (fnlen + (text - word) + 5);
3891 strncpy (new, word, text - word);
3892 new[text - word] = '\0';
3893 strcat (new, fname);
3895 (*list)[*list_used] = new;
3896 (*list)[++*list_used] = NULL;
3900 not_interesting_fname (const char *fname)
3902 static const char *illegal_aliens[] = {
3903 "_globals_", /* inserted by coff_symtab_read */
3908 for (i = 0; illegal_aliens[i]; i++)
3910 if (strcmp (fname, illegal_aliens[i]) == 0)
3916 /* Return a NULL terminated array of all source files whose names
3917 begin with matching TEXT. The file names are looked up in the
3918 symbol tables of this program. If the answer is no matchess, then
3919 the return value is an array which contains only a NULL pointer. */
3922 make_source_files_completion_list (char *text, char *word)
3925 struct partial_symtab *ps;
3926 struct objfile *objfile;
3928 int list_alloced = 1;
3930 size_t text_len = strlen (text);
3931 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3932 const char *base_name;
3936 if (!have_full_symbols () && !have_partial_symbols ())
3939 ALL_SYMTABS (objfile, s)
3941 if (not_interesting_fname (s->filename))
3943 if (!filename_seen (s->filename, 1, &first)
3944 #if HAVE_DOS_BASED_FILE_SYSTEM
3945 && strncasecmp (s->filename, text, text_len) == 0
3947 && strncmp (s->filename, text, text_len) == 0
3951 /* This file matches for a completion; add it to the current
3953 add_filename_to_list (s->filename, text, word,
3954 &list, &list_used, &list_alloced);
3958 /* NOTE: We allow the user to type a base name when the
3959 debug info records leading directories, but not the other
3960 way around. This is what subroutines of breakpoint
3961 command do when they parse file names. */
3962 base_name = lbasename (s->filename);
3963 if (base_name != s->filename
3964 && !filename_seen (base_name, 1, &first)
3965 #if HAVE_DOS_BASED_FILE_SYSTEM
3966 && strncasecmp (base_name, text, text_len) == 0
3968 && strncmp (base_name, text, text_len) == 0
3971 add_filename_to_list (base_name, text, word,
3972 &list, &list_used, &list_alloced);
3976 ALL_PSYMTABS (objfile, ps)
3978 if (not_interesting_fname (ps->filename))
3982 if (!filename_seen (ps->filename, 1, &first)
3983 #if HAVE_DOS_BASED_FILE_SYSTEM
3984 && strncasecmp (ps->filename, text, text_len) == 0
3986 && strncmp (ps->filename, text, text_len) == 0
3990 /* This file matches for a completion; add it to the
3991 current list of matches. */
3992 add_filename_to_list (ps->filename, text, word,
3993 &list, &list_used, &list_alloced);
3998 base_name = lbasename (ps->filename);
3999 if (base_name != ps->filename
4000 && !filename_seen (base_name, 1, &first)
4001 #if HAVE_DOS_BASED_FILE_SYSTEM
4002 && strncasecmp (base_name, text, text_len) == 0
4004 && strncmp (base_name, text, text_len) == 0
4007 add_filename_to_list (base_name, text, word,
4008 &list, &list_used, &list_alloced);
4016 /* Determine if PC is in the prologue of a function. The prologue is the area
4017 between the first instruction of a function, and the first executable line.
4018 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4020 If non-zero, func_start is where we think the prologue starts, possibly
4021 by previous examination of symbol table information.
4025 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
4027 struct symtab_and_line sal;
4028 CORE_ADDR func_addr, func_end;
4030 /* We have several sources of information we can consult to figure
4032 - Compilers usually emit line number info that marks the prologue
4033 as its own "source line". So the ending address of that "line"
4034 is the end of the prologue. If available, this is the most
4036 - The minimal symbols and partial symbols, which can usually tell
4037 us the starting and ending addresses of a function.
4038 - If we know the function's start address, we can call the
4039 architecture-defined gdbarch_skip_prologue function to analyze the
4040 instruction stream and guess where the prologue ends.
4041 - Our `func_start' argument; if non-zero, this is the caller's
4042 best guess as to the function's entry point. At the time of
4043 this writing, handle_inferior_event doesn't get this right, so
4044 it should be our last resort. */
4046 /* Consult the partial symbol table, to find which function
4048 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
4050 CORE_ADDR prologue_end;
4052 /* We don't even have minsym information, so fall back to using
4053 func_start, if given. */
4055 return 1; /* We *might* be in a prologue. */
4057 prologue_end = gdbarch_skip_prologue (current_gdbarch, func_start);
4059 return func_start <= pc && pc < prologue_end;
4062 /* If we have line number information for the function, that's
4063 usually pretty reliable. */
4064 sal = find_pc_line (func_addr, 0);
4066 /* Now sal describes the source line at the function's entry point,
4067 which (by convention) is the prologue. The end of that "line",
4068 sal.end, is the end of the prologue.
4070 Note that, for functions whose source code is all on a single
4071 line, the line number information doesn't always end up this way.
4072 So we must verify that our purported end-of-prologue address is
4073 *within* the function, not at its start or end. */
4075 || sal.end <= func_addr
4076 || func_end <= sal.end)
4078 /* We don't have any good line number info, so use the minsym
4079 information, together with the architecture-specific prologue
4081 CORE_ADDR prologue_end = gdbarch_skip_prologue
4082 (current_gdbarch, func_addr);
4084 return func_addr <= pc && pc < prologue_end;
4087 /* We have line number info, and it looks good. */
4088 return func_addr <= pc && pc < sal.end;
4091 /* Given PC at the function's start address, attempt to find the
4092 prologue end using SAL information. Return zero if the skip fails.
4094 A non-optimized prologue traditionally has one SAL for the function
4095 and a second for the function body. A single line function has
4096 them both pointing at the same line.
4098 An optimized prologue is similar but the prologue may contain
4099 instructions (SALs) from the instruction body. Need to skip those
4100 while not getting into the function body.
4102 The functions end point and an increasing SAL line are used as
4103 indicators of the prologue's endpoint.
4105 This code is based on the function refine_prologue_limit (versions
4106 found in both ia64 and ppc). */
4109 skip_prologue_using_sal (CORE_ADDR func_addr)
4111 struct symtab_and_line prologue_sal;
4115 /* Get an initial range for the function. */
4116 find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc);
4117 start_pc += gdbarch_deprecated_function_start_offset (current_gdbarch);
4119 prologue_sal = find_pc_line (start_pc, 0);
4120 if (prologue_sal.line != 0)
4122 /* If there is only one sal that covers the entire function,
4123 then it is probably a single line function, like
4125 if (prologue_sal.end >= end_pc)
4127 while (prologue_sal.end < end_pc)
4129 struct symtab_and_line sal;
4131 sal = find_pc_line (prologue_sal.end, 0);
4134 /* Assume that a consecutive SAL for the same (or larger)
4135 line mark the prologue -> body transition. */
4136 if (sal.line >= prologue_sal.line)
4138 /* The case in which compiler's optimizer/scheduler has
4139 moved instructions into the prologue. We look ahead in
4140 the function looking for address ranges whose
4141 corresponding line number is less the first one that we
4142 found for the function. This is more conservative then
4143 refine_prologue_limit which scans a large number of SALs
4144 looking for any in the prologue */
4148 return prologue_sal.end;
4151 struct symtabs_and_lines
4152 decode_line_spec (char *string, int funfirstline)
4154 struct symtabs_and_lines sals;
4155 struct symtab_and_line cursal;
4158 error (_("Empty line specification."));
4160 /* We use whatever is set as the current source line. We do not try
4161 and get a default or it will recursively call us! */
4162 cursal = get_current_source_symtab_and_line ();
4164 sals = decode_line_1 (&string, funfirstline,
4165 cursal.symtab, cursal.line,
4166 (char ***) NULL, NULL);
4169 error (_("Junk at end of line specification: %s"), string);
4174 static char *name_of_main;
4177 set_main_name (const char *name)
4179 if (name_of_main != NULL)
4181 xfree (name_of_main);
4182 name_of_main = NULL;
4186 name_of_main = xstrdup (name);
4190 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4194 find_main_name (void)
4196 const char *new_main_name;
4198 /* Try to see if the main procedure is in Ada. */
4199 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4200 be to add a new method in the language vector, and call this
4201 method for each language until one of them returns a non-empty
4202 name. This would allow us to remove this hard-coded call to
4203 an Ada function. It is not clear that this is a better approach
4204 at this point, because all methods need to be written in a way
4205 such that false positives never be returned. For instance, it is
4206 important that a method does not return a wrong name for the main
4207 procedure if the main procedure is actually written in a different
4208 language. It is easy to guaranty this with Ada, since we use a
4209 special symbol generated only when the main in Ada to find the name
4210 of the main procedure. It is difficult however to see how this can
4211 be guarantied for languages such as C, for instance. This suggests
4212 that order of call for these methods becomes important, which means
4213 a more complicated approach. */
4214 new_main_name = ada_main_name ();
4215 if (new_main_name != NULL)
4217 set_main_name (new_main_name);
4221 new_main_name = pascal_main_name ();
4222 if (new_main_name != NULL)
4224 set_main_name (new_main_name);
4228 /* The languages above didn't identify the name of the main procedure.
4229 Fallback to "main". */
4230 set_main_name ("main");
4236 if (name_of_main == NULL)
4239 return name_of_main;
4242 /* Handle ``executable_changed'' events for the symtab module. */
4245 symtab_observer_executable_changed (void *unused)
4247 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4248 set_main_name (NULL);
4251 /* Helper to expand_line_sal below. Appends new sal to SAL,
4252 initializing it from SYMTAB, LINENO and PC. */
4254 append_expanded_sal (struct symtabs_and_lines *sal,
4255 struct symtab *symtab,
4256 int lineno, CORE_ADDR pc)
4258 CORE_ADDR func_addr, func_end;
4260 sal->sals = xrealloc (sal->sals,
4261 sizeof (sal->sals[0])
4262 * (sal->nelts + 1));
4263 init_sal (sal->sals + sal->nelts);
4264 sal->sals[sal->nelts].symtab = symtab;
4265 sal->sals[sal->nelts].section = NULL;
4266 sal->sals[sal->nelts].end = 0;
4267 sal->sals[sal->nelts].line = lineno;
4268 sal->sals[sal->nelts].pc = pc;
4272 /* Compute a set of all sals in
4273 the entire program that correspond to same file
4274 and line as SAL and return those. If there
4275 are several sals that belong to the same block,
4276 only one sal for the block is included in results. */
4278 struct symtabs_and_lines
4279 expand_line_sal (struct symtab_and_line sal)
4281 struct symtabs_and_lines ret, this_line;
4283 struct objfile *objfile;
4284 struct partial_symtab *psymtab;
4285 struct symtab *symtab;
4288 struct block **blocks = NULL;
4294 if (sal.symtab == NULL || sal.line == 0 || sal.pc != 0)
4296 ret.sals = xmalloc (sizeof (struct symtab_and_line));
4303 struct linetable_entry *best_item = 0;
4304 struct symtab *best_symtab = 0;
4309 /* We meed to find all symtabs for a file which name
4310 is described by sal. We cannot just directly
4311 iterate over symtabs, since a symtab might not be
4312 yet created. We also cannot iterate over psymtabs,
4313 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4314 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4315 corresponding to an included file. Therefore, we do
4316 first pass over psymtabs, reading in those with
4317 the right name. Then, we iterate over symtabs, knowing
4318 that all symtabs we're interested in are loaded. */
4320 ALL_PSYMTABS (objfile, psymtab)
4322 if (strcmp (sal.symtab->filename,
4323 psymtab->filename) == 0)
4324 PSYMTAB_TO_SYMTAB (psymtab);
4328 /* For each symtab, we add all pcs to ret.sals. I'm actually
4329 not sure what to do if we have exact match in one symtab,
4330 and non-exact match on another symtab.
4332 ALL_SYMTABS (objfile, symtab)
4334 if (strcmp (sal.symtab->filename,
4335 symtab->filename) == 0)
4337 struct linetable *l;
4339 l = LINETABLE (symtab);
4344 for (j = 0; j < len; j++)
4346 struct linetable_entry *item = &(l->item[j]);
4348 if (item->line == lineno)
4351 append_expanded_sal (&ret, symtab, lineno, item->pc);
4353 else if (!exact && item->line > lineno
4354 && (best_item == NULL || item->line < best_item->line))
4358 best_symtab = symtab;
4363 if (!exact && best_item)
4364 append_expanded_sal (&ret, best_symtab, lineno, best_item->pc);
4367 /* For optimized code, compiler can scatter one source line accross
4368 disjoint ranges of PC values, even when no duplicate functions
4369 or inline functions are involved. For example, 'for (;;)' inside
4370 non-template non-inline non-ctor-or-dtor function can result
4371 in two PC ranges. In this case, we don't want to set breakpoint
4372 on first PC of each range. To filter such cases, we use containing
4373 blocks -- for each PC found above we see if there are other PCs
4374 that are in the same block. If yes, the other PCs are filtered out. */
4376 filter = xmalloc (ret.nelts * sizeof (int));
4377 blocks = xmalloc (ret.nelts * sizeof (struct block *));
4378 for (i = 0; i < ret.nelts; ++i)
4381 blocks[i] = block_for_pc (ret.sals[i].pc);
4384 for (i = 0; i < ret.nelts; ++i)
4385 if (blocks[i] != NULL)
4386 for (j = i+1; j < ret.nelts; ++j)
4387 if (blocks[j] == blocks[i])
4395 struct symtab_and_line *final =
4396 xmalloc (sizeof (struct symtab_and_line) * (ret.nelts-deleted));
4398 for (i = 0, j = 0; i < ret.nelts; ++i)
4400 final[j++] = ret.sals[i];
4402 ret.nelts -= deleted;
4412 _initialize_symtab (void)
4414 add_info ("variables", variables_info, _("\
4415 All global and static variable names, or those matching REGEXP."));
4417 add_com ("whereis", class_info, variables_info, _("\
4418 All global and static variable names, or those matching REGEXP."));
4420 add_info ("functions", functions_info,
4421 _("All function names, or those matching REGEXP."));
4424 /* FIXME: This command has at least the following problems:
4425 1. It prints builtin types (in a very strange and confusing fashion).
4426 2. It doesn't print right, e.g. with
4427 typedef struct foo *FOO
4428 type_print prints "FOO" when we want to make it (in this situation)
4429 print "struct foo *".
4430 I also think "ptype" or "whatis" is more likely to be useful (but if
4431 there is much disagreement "info types" can be fixed). */
4432 add_info ("types", types_info,
4433 _("All type names, or those matching REGEXP."));
4435 add_info ("sources", sources_info,
4436 _("Source files in the program."));
4438 add_com ("rbreak", class_breakpoint, rbreak_command,
4439 _("Set a breakpoint for all functions matching REGEXP."));
4443 add_com ("lf", class_info, sources_info,
4444 _("Source files in the program"));
4445 add_com ("lg", class_info, variables_info, _("\
4446 All global and static variable names, or those matching REGEXP."));
4449 add_setshow_enum_cmd ("multiple-symbols", no_class,
4450 multiple_symbols_modes, &multiple_symbols_mode,
4452 Set the debugger behavior when more than one symbol are possible matches\n\
4453 in an expression."), _("\
4454 Show how the debugger handles ambiguities in expressions."), _("\
4455 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4456 NULL, NULL, &setlist, &showlist);
4458 /* Initialize the one built-in type that isn't language dependent... */
4459 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4460 "<unknown type>", (struct objfile *) NULL);
4462 observer_attach_executable_changed (symtab_observer_executable_changed);