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
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"
46 #include "gdb_obstack.h"
48 #include "dictionary.h"
50 #include <sys/types.h>
52 #include "gdb_string.h"
57 #include "gdb_assert.h"
60 /* Prototypes for local functions */
62 static void completion_list_add_name (char *, char *, int, char *, char *);
64 static void rbreak_command (char *, int);
66 static void types_info (char *, int);
68 static void functions_info (char *, int);
70 static void variables_info (char *, int);
72 static void sources_info (char *, int);
74 static void output_source_filename (const char *, int *);
76 static int find_line_common (struct linetable *, int, int *);
78 /* This one is used by linespec.c */
80 char *operator_chars (char *p, char **end);
82 static struct symbol *lookup_symbol_aux (const char *name,
83 const char *linkage_name,
84 const struct block *block,
85 const domain_enum domain,
86 enum language language,
87 int *is_a_field_of_this,
88 struct symtab **symtab);
91 struct symbol *lookup_symbol_aux_local (const char *name,
92 const char *linkage_name,
93 const struct block *block,
94 const domain_enum domain,
95 struct symtab **symtab);
98 struct symbol *lookup_symbol_aux_symtabs (int block_index,
100 const char *linkage_name,
101 const domain_enum domain,
102 struct symtab **symtab);
105 struct symbol *lookup_symbol_aux_psymtabs (int block_index,
107 const char *linkage_name,
108 const domain_enum domain,
109 struct symtab **symtab);
111 static void fixup_section (struct general_symbol_info *, struct objfile *);
113 static int file_matches (char *, char **, int);
115 static void print_symbol_info (domain_enum,
116 struct symtab *, struct symbol *, int, char *);
118 static void print_msymbol_info (struct minimal_symbol *);
120 static void symtab_symbol_info (char *, domain_enum, int);
122 void _initialize_symtab (void);
126 /* The single non-language-specific builtin type */
127 struct type *builtin_type_error;
129 /* Block in which the most recently searched-for symbol was found.
130 Might be better to make this a parameter to lookup_symbol and
133 const struct block *block_found;
135 /* Check for a symtab of a specific name; first in symtabs, then in
136 psymtabs. *If* there is no '/' in the name, a match after a '/'
137 in the symtab filename will also work. */
140 lookup_symtab (const char *name)
143 struct partial_symtab *ps;
144 struct objfile *objfile;
145 char *real_path = NULL;
146 char *full_path = NULL;
148 /* Here we are interested in canonicalizing an absolute path, not
149 absolutizing a relative path. */
150 if (IS_ABSOLUTE_PATH (name))
152 full_path = xfullpath (name);
153 make_cleanup (xfree, full_path);
154 real_path = gdb_realpath (name);
155 make_cleanup (xfree, real_path);
160 /* First, search for an exact match */
162 ALL_SYMTABS (objfile, s)
164 if (FILENAME_CMP (name, s->filename) == 0)
169 /* If the user gave us an absolute path, try to find the file in
170 this symtab and use its absolute path. */
172 if (full_path != NULL)
174 const char *fp = symtab_to_fullname (s);
175 if (fp != NULL && FILENAME_CMP (full_path, fp) == 0)
181 if (real_path != NULL)
183 char *fullname = symtab_to_fullname (s);
184 if (fullname != NULL)
186 char *rp = gdb_realpath (fullname);
187 make_cleanup (xfree, rp);
188 if (FILENAME_CMP (real_path, rp) == 0)
196 /* Now, search for a matching tail (only if name doesn't have any dirs) */
198 if (lbasename (name) == name)
199 ALL_SYMTABS (objfile, s)
201 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
205 /* Same search rules as above apply here, but now we look thru the
208 ps = lookup_partial_symtab (name);
213 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
216 s = PSYMTAB_TO_SYMTAB (ps);
221 /* At this point, we have located the psymtab for this file, but
222 the conversion to a symtab has failed. This usually happens
223 when we are looking up an include file. In this case,
224 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
225 been created. So, we need to run through the symtabs again in
226 order to find the file.
227 XXX - This is a crock, and should be fixed inside of the the
228 symbol parsing routines. */
232 /* Lookup the partial symbol table of a source file named NAME.
233 *If* there is no '/' in the name, a match after a '/'
234 in the psymtab filename will also work. */
236 struct partial_symtab *
237 lookup_partial_symtab (const char *name)
239 struct partial_symtab *pst;
240 struct objfile *objfile;
241 char *full_path = NULL;
242 char *real_path = NULL;
244 /* Here we are interested in canonicalizing an absolute path, not
245 absolutizing a relative path. */
246 if (IS_ABSOLUTE_PATH (name))
248 full_path = xfullpath (name);
249 make_cleanup (xfree, full_path);
250 real_path = gdb_realpath (name);
251 make_cleanup (xfree, real_path);
254 ALL_PSYMTABS (objfile, pst)
256 if (FILENAME_CMP (name, pst->filename) == 0)
261 /* If the user gave us an absolute path, try to find the file in
262 this symtab and use its absolute path. */
263 if (full_path != NULL)
265 psymtab_to_fullname (pst);
266 if (pst->fullname != NULL
267 && FILENAME_CMP (full_path, pst->fullname) == 0)
273 if (real_path != NULL)
276 psymtab_to_fullname (pst);
277 if (pst->fullname != NULL)
279 rp = gdb_realpath (pst->fullname);
280 make_cleanup (xfree, rp);
282 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
289 /* Now, search for a matching tail (only if name doesn't have any dirs) */
291 if (lbasename (name) == name)
292 ALL_PSYMTABS (objfile, pst)
294 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
301 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
302 full method name, which consist of the class name (from T), the unadorned
303 method name from METHOD_ID, and the signature for the specific overload,
304 specified by SIGNATURE_ID. Note that this function is g++ specific. */
307 gdb_mangle_name (struct type *type, int method_id, int signature_id)
309 int mangled_name_len;
311 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
312 struct fn_field *method = &f[signature_id];
313 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
314 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
315 char *newname = type_name_no_tag (type);
317 /* Does the form of physname indicate that it is the full mangled name
318 of a constructor (not just the args)? */
319 int is_full_physname_constructor;
322 int is_destructor = is_destructor_name (physname);
323 /* Need a new type prefix. */
324 char *const_prefix = method->is_const ? "C" : "";
325 char *volatile_prefix = method->is_volatile ? "V" : "";
327 int len = (newname == NULL ? 0 : strlen (newname));
329 /* Nothing to do if physname already contains a fully mangled v3 abi name
330 or an operator name. */
331 if ((physname[0] == '_' && physname[1] == 'Z')
332 || is_operator_name (field_name))
333 return xstrdup (physname);
335 is_full_physname_constructor = is_constructor_name (physname);
338 is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0);
341 is_destructor = (strncmp (physname, "__dt", 4) == 0);
343 if (is_destructor || is_full_physname_constructor)
345 mangled_name = (char *) xmalloc (strlen (physname) + 1);
346 strcpy (mangled_name, physname);
352 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
354 else if (physname[0] == 't' || physname[0] == 'Q')
356 /* The physname for template and qualified methods already includes
358 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
364 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
366 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
367 + strlen (buf) + len + strlen (physname) + 1);
370 mangled_name = (char *) xmalloc (mangled_name_len);
372 mangled_name[0] = '\0';
374 strcpy (mangled_name, field_name);
376 strcat (mangled_name, buf);
377 /* If the class doesn't have a name, i.e. newname NULL, then we just
378 mangle it using 0 for the length of the class. Thus it gets mangled
379 as something starting with `::' rather than `classname::'. */
381 strcat (mangled_name, newname);
383 strcat (mangled_name, physname);
384 return (mangled_name);
388 /* Initialize the language dependent portion of a symbol
389 depending upon the language for the symbol. */
391 symbol_init_language_specific (struct general_symbol_info *gsymbol,
392 enum language language)
394 gsymbol->language = language;
395 if (gsymbol->language == language_cplus
396 || gsymbol->language == language_java
397 || gsymbol->language == language_objc)
399 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
403 memset (&gsymbol->language_specific, 0,
404 sizeof (gsymbol->language_specific));
408 /* Functions to initialize a symbol's mangled name. */
410 /* Create the hash table used for demangled names. Each hash entry is
411 a pair of strings; one for the mangled name and one for the demangled
412 name. The entry is hashed via just the mangled name. */
415 create_demangled_names_hash (struct objfile *objfile)
417 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
418 The hash table code will round this up to the next prime number.
419 Choosing a much larger table size wastes memory, and saves only about
420 1% in symbol reading. */
422 objfile->demangled_names_hash = htab_create_alloc
423 (256, htab_hash_string, (int (*) (const void *, const void *)) streq,
424 NULL, xcalloc, xfree);
427 /* Try to determine the demangled name for a symbol, based on the
428 language of that symbol. If the language is set to language_auto,
429 it will attempt to find any demangling algorithm that works and
430 then set the language appropriately. The returned name is allocated
431 by the demangler and should be xfree'd. */
434 symbol_find_demangled_name (struct general_symbol_info *gsymbol,
437 char *demangled = NULL;
439 if (gsymbol->language == language_unknown)
440 gsymbol->language = language_auto;
442 if (gsymbol->language == language_objc
443 || gsymbol->language == language_auto)
446 objc_demangle (mangled, 0);
447 if (demangled != NULL)
449 gsymbol->language = language_objc;
453 if (gsymbol->language == language_cplus
454 || gsymbol->language == language_auto)
457 cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
458 if (demangled != NULL)
460 gsymbol->language = language_cplus;
464 if (gsymbol->language == language_java)
467 cplus_demangle (mangled,
468 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
469 if (demangled != NULL)
471 gsymbol->language = language_java;
478 /* Set both the mangled and demangled (if any) names for GSYMBOL based
479 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
480 is used, and the memory comes from that objfile's objfile_obstack.
481 LINKAGE_NAME is copied, so the pointer can be discarded after
482 calling this function. */
484 /* We have to be careful when dealing with Java names: when we run
485 into a Java minimal symbol, we don't know it's a Java symbol, so it
486 gets demangled as a C++ name. This is unfortunate, but there's not
487 much we can do about it: but when demangling partial symbols and
488 regular symbols, we'd better not reuse the wrong demangled name.
489 (See PR gdb/1039.) We solve this by putting a distinctive prefix
490 on Java names when storing them in the hash table. */
492 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
493 don't mind the Java prefix so much: different languages have
494 different demangling requirements, so it's only natural that we
495 need to keep language data around in our demangling cache. But
496 it's not good that the minimal symbol has the wrong demangled name.
497 Unfortunately, I can't think of any easy solution to that
500 #define JAVA_PREFIX "##JAVA$$"
501 #define JAVA_PREFIX_LEN 8
504 symbol_set_names (struct general_symbol_info *gsymbol,
505 const char *linkage_name, int len, struct objfile *objfile)
508 /* A 0-terminated copy of the linkage name. */
509 const char *linkage_name_copy;
510 /* A copy of the linkage name that might have a special Java prefix
511 added to it, for use when looking names up in the hash table. */
512 const char *lookup_name;
513 /* The length of lookup_name. */
516 if (objfile->demangled_names_hash == NULL)
517 create_demangled_names_hash (objfile);
519 /* The stabs reader generally provides names that are not
520 NUL-terminated; most of the other readers don't do this, so we
521 can just use the given copy, unless we're in the Java case. */
522 if (gsymbol->language == language_java)
525 lookup_len = len + JAVA_PREFIX_LEN;
527 alloc_name = alloca (lookup_len + 1);
528 memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN);
529 memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len);
530 alloc_name[lookup_len] = '\0';
532 lookup_name = alloc_name;
533 linkage_name_copy = alloc_name + JAVA_PREFIX_LEN;
535 else if (linkage_name[len] != '\0')
540 alloc_name = alloca (lookup_len + 1);
541 memcpy (alloc_name, linkage_name, len);
542 alloc_name[lookup_len] = '\0';
544 lookup_name = alloc_name;
545 linkage_name_copy = alloc_name;
550 lookup_name = linkage_name;
551 linkage_name_copy = linkage_name;
554 slot = (char **) htab_find_slot (objfile->demangled_names_hash,
555 lookup_name, INSERT);
557 /* If this name is not in the hash table, add it. */
560 char *demangled_name = symbol_find_demangled_name (gsymbol,
562 int demangled_len = demangled_name ? strlen (demangled_name) : 0;
564 /* If there is a demangled name, place it right after the mangled name.
565 Otherwise, just place a second zero byte after the end of the mangled
567 *slot = obstack_alloc (&objfile->objfile_obstack,
568 lookup_len + demangled_len + 2);
569 memcpy (*slot, lookup_name, lookup_len + 1);
570 if (demangled_name != NULL)
572 memcpy (*slot + lookup_len + 1, demangled_name, demangled_len + 1);
573 xfree (demangled_name);
576 (*slot)[lookup_len + 1] = '\0';
579 gsymbol->name = *slot + lookup_len - len;
580 if ((*slot)[lookup_len + 1] != '\0')
581 gsymbol->language_specific.cplus_specific.demangled_name
582 = &(*slot)[lookup_len + 1];
584 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
587 /* Initialize the demangled name of GSYMBOL if possible. Any required space
588 to store the name is obtained from the specified obstack. The function
589 symbol_set_names, above, should be used instead where possible for more
590 efficient memory usage. */
593 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
594 struct obstack *obstack)
596 char *mangled = gsymbol->name;
597 char *demangled = NULL;
599 demangled = symbol_find_demangled_name (gsymbol, mangled);
600 if (gsymbol->language == language_cplus
601 || gsymbol->language == language_java
602 || gsymbol->language == language_objc)
606 gsymbol->language_specific.cplus_specific.demangled_name
607 = obsavestring (demangled, strlen (demangled), obstack);
611 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
615 /* Unknown language; just clean up quietly. */
621 /* Return the source code name of a symbol. In languages where
622 demangling is necessary, this is the demangled name. */
625 symbol_natural_name (const struct general_symbol_info *gsymbol)
627 switch (gsymbol->language)
632 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
633 return gsymbol->language_specific.cplus_specific.demangled_name;
636 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
637 return gsymbol->language_specific.cplus_specific.demangled_name;
639 return ada_decode_symbol (gsymbol);
644 return gsymbol->name;
647 /* Return the demangled name for a symbol based on the language for
648 that symbol. If no demangled name exists, return NULL. */
650 symbol_demangled_name (struct general_symbol_info *gsymbol)
652 switch (gsymbol->language)
657 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
658 return gsymbol->language_specific.cplus_specific.demangled_name;
661 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
662 return gsymbol->language_specific.cplus_specific.demangled_name;
664 return ada_decode_symbol (gsymbol);
672 /* Return the search name of a symbol---generally the demangled or
673 linkage name of the symbol, depending on how it will be searched for.
674 If there is no distinct demangled name, then returns the same value
675 (same pointer) as SYMBOL_LINKAGE_NAME. */
677 symbol_search_name (const struct general_symbol_info *gsymbol)
679 if (gsymbol->language == language_ada)
680 return gsymbol->name;
682 return symbol_natural_name (gsymbol);
685 /* Initialize the structure fields to zero values. */
687 init_sal (struct symtab_and_line *sal)
697 /* Return 1 if the two sections are the same, or if they could
698 plausibly be copies of each other, one in an original object
699 file and another in a separated debug file. */
702 matching_bfd_sections (asection *first, asection *second)
706 /* If they're the same section, then they match. */
710 /* If either is NULL, give up. */
711 if (first == NULL || second == NULL)
714 /* This doesn't apply to absolute symbols. */
715 if (first->owner == NULL || second->owner == NULL)
718 /* If they're in the same object file, they must be different sections. */
719 if (first->owner == second->owner)
722 /* Check whether the two sections are potentially corresponding. They must
723 have the same size, address, and name. We can't compare section indexes,
724 which would be more reliable, because some sections may have been
726 if (bfd_get_section_size (first) != bfd_get_section_size (second))
729 /* In-memory addresses may start at a different offset, relativize them. */
730 if (bfd_get_section_vma (first->owner, first)
731 - bfd_get_start_address (first->owner)
732 != bfd_get_section_vma (second->owner, second)
733 - bfd_get_start_address (second->owner))
736 if (bfd_get_section_name (first->owner, first) == NULL
737 || bfd_get_section_name (second->owner, second) == NULL
738 || strcmp (bfd_get_section_name (first->owner, first),
739 bfd_get_section_name (second->owner, second)) != 0)
742 /* Otherwise check that they are in corresponding objfiles. */
745 if (obj->obfd == first->owner)
747 gdb_assert (obj != NULL);
749 if (obj->separate_debug_objfile != NULL
750 && obj->separate_debug_objfile->obfd == second->owner)
752 if (obj->separate_debug_objfile_backlink != NULL
753 && obj->separate_debug_objfile_backlink->obfd == second->owner)
759 /* Find which partial symtab contains PC and SECTION. Return 0 if
760 none. We return the psymtab that contains a symbol whose address
761 exactly matches PC, or, if we cannot find an exact match, the
762 psymtab that contains a symbol whose address is closest to PC. */
763 struct partial_symtab *
764 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
766 struct partial_symtab *pst;
767 struct objfile *objfile;
768 struct minimal_symbol *msymbol;
770 /* If we know that this is not a text address, return failure. This is
771 necessary because we loop based on texthigh and textlow, which do
772 not include the data ranges. */
773 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
775 && (msymbol->type == mst_data
776 || msymbol->type == mst_bss
777 || msymbol->type == mst_abs
778 || msymbol->type == mst_file_data
779 || msymbol->type == mst_file_bss))
782 ALL_PSYMTABS (objfile, pst)
784 if (pc >= pst->textlow && pc < pst->texthigh)
786 struct partial_symtab *tpst;
787 struct partial_symtab *best_pst = pst;
788 CORE_ADDR best_addr = pst->textlow;
790 /* An objfile that has its functions reordered might have
791 many partial symbol tables containing the PC, but
792 we want the partial symbol table that contains the
793 function containing the PC. */
794 if (!(objfile->flags & OBJF_REORDERED) &&
795 section == 0) /* can't validate section this way */
801 /* The code range of partial symtabs sometimes overlap, so, in
802 the loop below, we need to check all partial symtabs and
803 find the one that fits better for the given PC address. We
804 select the partial symtab that contains a symbol whose
805 address is closest to the PC address. By closest we mean
806 that find_pc_sect_symbol returns the symbol with address
807 that is closest and still less than the given PC. */
808 for (tpst = pst; tpst != NULL; tpst = tpst->next)
810 if (pc >= tpst->textlow && pc < tpst->texthigh)
812 struct partial_symbol *p;
815 /* NOTE: This assumes that every psymbol has a
816 corresponding msymbol, which is not necessarily
817 true; the debug info might be much richer than the
818 object's symbol table. */
819 p = find_pc_sect_psymbol (tpst, pc, section);
821 && SYMBOL_VALUE_ADDRESS (p)
822 == SYMBOL_VALUE_ADDRESS (msymbol))
825 /* Also accept the textlow value of a psymtab as a
826 "symbol", to provide some support for partial
827 symbol tables with line information but no debug
828 symbols (e.g. those produced by an assembler). */
830 this_addr = SYMBOL_VALUE_ADDRESS (p);
832 this_addr = tpst->textlow;
834 /* Check whether it is closer than our current
835 BEST_ADDR. Since this symbol address is
836 necessarily lower or equal to PC, the symbol closer
837 to PC is the symbol which address is the highest.
838 This way we return the psymtab which contains such
839 best match symbol. This can help in cases where the
840 symbol information/debuginfo is not complete, like
841 for instance on IRIX6 with gcc, where no debug info
842 is emitted for statics. (See also the nodebug.exp
844 if (this_addr > best_addr)
846 best_addr = this_addr;
857 /* Find which partial symtab contains PC. Return 0 if none.
858 Backward compatibility, no section */
860 struct partial_symtab *
861 find_pc_psymtab (CORE_ADDR pc)
863 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
866 /* Find which partial symbol within a psymtab matches PC and SECTION.
867 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
869 struct partial_symbol *
870 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
873 struct partial_symbol *best = NULL, *p, **pp;
877 psymtab = find_pc_sect_psymtab (pc, section);
881 /* Cope with programs that start at address 0 */
882 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
884 /* Search the global symbols as well as the static symbols, so that
885 find_pc_partial_function doesn't use a minimal symbol and thus
886 cache a bad endaddr. */
887 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
888 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
889 < psymtab->n_global_syms);
893 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
894 && SYMBOL_CLASS (p) == LOC_BLOCK
895 && pc >= SYMBOL_VALUE_ADDRESS (p)
896 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
897 || (psymtab->textlow == 0
898 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
900 if (section) /* match on a specific section */
902 fixup_psymbol_section (p, psymtab->objfile);
903 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p), section))
906 best_pc = SYMBOL_VALUE_ADDRESS (p);
911 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
912 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
913 < psymtab->n_static_syms);
917 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
918 && SYMBOL_CLASS (p) == LOC_BLOCK
919 && pc >= SYMBOL_VALUE_ADDRESS (p)
920 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
921 || (psymtab->textlow == 0
922 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
924 if (section) /* match on a specific section */
926 fixup_psymbol_section (p, psymtab->objfile);
927 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p), section))
930 best_pc = SYMBOL_VALUE_ADDRESS (p);
938 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
939 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
941 struct partial_symbol *
942 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
944 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
947 /* Debug symbols usually don't have section information. We need to dig that
948 out of the minimal symbols and stash that in the debug symbol. */
951 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
953 struct minimal_symbol *msym;
954 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
958 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
959 ginfo->section = SYMBOL_SECTION (msym);
963 /* Static, function-local variables do appear in the linker
964 (minimal) symbols, but are frequently given names that won't
965 be found via lookup_minimal_symbol(). E.g., it has been
966 observed in frv-uclinux (ELF) executables that a static,
967 function-local variable named "foo" might appear in the
968 linker symbols as "foo.6" or "foo.3". Thus, there is no
969 point in attempting to extend the lookup-by-name mechanism to
970 handle this case due to the fact that there can be multiple
973 So, instead, search the section table when lookup by name has
974 failed. The ``addr'' and ``endaddr'' fields may have already
975 been relocated. If so, the relocation offset (i.e. the
976 ANOFFSET value) needs to be subtracted from these values when
977 performing the comparison. We unconditionally subtract it,
978 because, when no relocation has been performed, the ANOFFSET
979 value will simply be zero.
981 The address of the symbol whose section we're fixing up HAS
982 NOT BEEN adjusted (relocated) yet. It can't have been since
983 the section isn't yet known and knowing the section is
984 necessary in order to add the correct relocation value. In
985 other words, we wouldn't even be in this function (attempting
986 to compute the section) if it were already known.
988 Note that it is possible to search the minimal symbols
989 (subtracting the relocation value if necessary) to find the
990 matching minimal symbol, but this is overkill and much less
991 efficient. It is not necessary to find the matching minimal
992 symbol, only its section.
994 Note that this technique (of doing a section table search)
995 can fail when unrelocated section addresses overlap. For
996 this reason, we still attempt a lookup by name prior to doing
997 a search of the section table. */
1000 struct obj_section *s;
1002 addr = ginfo->value.address;
1004 ALL_OBJFILE_OSECTIONS (objfile, s)
1006 int idx = s->the_bfd_section->index;
1007 CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx);
1009 if (s->addr - offset <= addr && addr < s->endaddr - offset)
1011 ginfo->bfd_section = s->the_bfd_section;
1012 ginfo->section = idx;
1020 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
1025 if (SYMBOL_BFD_SECTION (sym))
1028 fixup_section (&sym->ginfo, objfile);
1033 struct partial_symbol *
1034 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
1039 if (SYMBOL_BFD_SECTION (psym))
1042 fixup_section (&psym->ginfo, objfile);
1047 /* Find the definition for a specified symbol name NAME
1048 in domain DOMAIN, visible from lexical block BLOCK.
1049 Returns the struct symbol pointer, or zero if no symbol is found.
1050 If SYMTAB is non-NULL, store the symbol table in which the
1051 symbol was found there, or NULL if not found.
1052 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1053 NAME is a field of the current implied argument `this'. If so set
1054 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1055 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1056 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1058 /* This function has a bunch of loops in it and it would seem to be
1059 attractive to put in some QUIT's (though I'm not really sure
1060 whether it can run long enough to be really important). But there
1061 are a few calls for which it would appear to be bad news to quit
1062 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1063 that there is C++ code below which can error(), but that probably
1064 doesn't affect these calls since they are looking for a known
1065 variable and thus can probably assume it will never hit the C++
1069 lookup_symbol_in_language (const char *name, const struct block *block,
1070 const domain_enum domain, enum language lang,
1071 int *is_a_field_of_this,
1072 struct symtab **symtab)
1074 char *demangled_name = NULL;
1075 const char *modified_name = NULL;
1076 const char *mangled_name = NULL;
1077 int needtofreename = 0;
1078 struct symbol *returnval;
1080 modified_name = name;
1082 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1083 we can always binary search. */
1084 if (lang == language_cplus)
1086 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
1089 mangled_name = name;
1090 modified_name = demangled_name;
1094 else if (lang == language_java)
1096 demangled_name = cplus_demangle (name,
1097 DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
1100 mangled_name = name;
1101 modified_name = demangled_name;
1106 if (case_sensitivity == case_sensitive_off)
1111 len = strlen (name);
1112 copy = (char *) alloca (len + 1);
1113 for (i= 0; i < len; i++)
1114 copy[i] = tolower (name[i]);
1116 modified_name = copy;
1119 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
1121 is_a_field_of_this, symtab);
1123 xfree (demangled_name);
1125 /* Override the returned symtab with the symbol's specific one. */
1126 if (returnval != NULL && symtab != NULL)
1127 *symtab = SYMBOL_SYMTAB (returnval);
1132 /* Behave like lookup_symbol_in_language, but performed with the
1133 current language. */
1136 lookup_symbol (const char *name, const struct block *block,
1137 domain_enum domain, int *is_a_field_of_this,
1138 struct symtab **symtab)
1140 return lookup_symbol_in_language (name, block, domain,
1141 current_language->la_language,
1142 is_a_field_of_this, symtab);
1145 /* Behave like lookup_symbol except that NAME is the natural name
1146 of the symbol that we're looking for and, if LINKAGE_NAME is
1147 non-NULL, ensure that the symbol's linkage name matches as
1150 static struct symbol *
1151 lookup_symbol_aux (const char *name, const char *linkage_name,
1152 const struct block *block, const domain_enum domain,
1153 enum language language,
1154 int *is_a_field_of_this, struct symtab **symtab)
1157 const struct language_defn *langdef;
1159 /* Make sure we do something sensible with is_a_field_of_this, since
1160 the callers that set this parameter to some non-null value will
1161 certainly use it later and expect it to be either 0 or 1.
1162 If we don't set it, the contents of is_a_field_of_this are
1164 if (is_a_field_of_this != NULL)
1165 *is_a_field_of_this = 0;
1167 /* Search specified block and its superiors. Don't search
1168 STATIC_BLOCK or GLOBAL_BLOCK. */
1170 sym = lookup_symbol_aux_local (name, linkage_name, block, domain,
1175 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1176 check to see if NAME is a field of `this'. */
1178 langdef = language_def (language);
1180 if (langdef->la_value_of_this != NULL
1181 && is_a_field_of_this != NULL)
1183 struct value *v = langdef->la_value_of_this (0);
1185 if (v && check_field (v, name))
1187 *is_a_field_of_this = 1;
1194 /* Now do whatever is appropriate for LANGUAGE to look
1195 up static and global variables. */
1197 sym = langdef->la_lookup_symbol_nonlocal (name, linkage_name,
1198 block, domain, symtab);
1202 /* Now search all static file-level symbols. Not strictly correct,
1203 but more useful than an error. Do the symtabs first, then check
1204 the psymtabs. If a psymtab indicates the existence of the
1205 desired name as a file-level static, then do psymtab-to-symtab
1206 conversion on the fly and return the found symbol. */
1208 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, linkage_name,
1213 sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, linkage_name,
1223 /* Check to see if the symbol is defined in BLOCK or its superiors.
1224 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1226 static struct symbol *
1227 lookup_symbol_aux_local (const char *name, const char *linkage_name,
1228 const struct block *block,
1229 const domain_enum domain,
1230 struct symtab **symtab)
1233 const struct block *static_block = block_static_block (block);
1235 /* Check if either no block is specified or it's a global block. */
1237 if (static_block == NULL)
1240 while (block != static_block)
1242 sym = lookup_symbol_aux_block (name, linkage_name, block, domain,
1246 block = BLOCK_SUPERBLOCK (block);
1249 /* We've reached the static block without finding a result. */
1254 /* Look up OBJFILE to BLOCK. */
1256 static struct objfile *
1257 lookup_objfile_from_block (const struct block *block)
1259 struct objfile *obj;
1265 block = block_global_block (block);
1266 /* Go through SYMTABS. */
1267 ALL_SYMTABS (obj, s)
1268 if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK))
1274 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1275 symbol, and set block_found appropriately. */
1278 lookup_symbol_aux_block (const char *name, const char *linkage_name,
1279 const struct block *block,
1280 const domain_enum domain,
1281 struct symtab **symtab)
1284 struct objfile *objfile = NULL;
1285 struct blockvector *bv;
1287 struct symtab *s = NULL;
1289 sym = lookup_block_symbol (block, name, linkage_name, domain);
1292 block_found = block;
1295 /* Search the list of symtabs for one which contains the
1296 address of the start of this block. */
1297 ALL_PRIMARY_SYMTABS (objfile, s)
1299 bv = BLOCKVECTOR (s);
1300 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1301 if (BLOCK_START (b) <= BLOCK_START (block)
1302 && BLOCK_END (b) > BLOCK_START (block))
1309 return fixup_symbol_section (sym, objfile);
1315 /* Check all global symbols in OBJFILE in symtabs and
1319 lookup_global_symbol_from_objfile (const struct objfile *objfile,
1321 const char *linkage_name,
1322 const domain_enum domain,
1323 struct symtab **symtab)
1326 struct blockvector *bv;
1327 const struct block *block;
1329 struct partial_symtab *ps;
1331 /* Go through symtabs. */
1332 ALL_OBJFILE_SYMTABS (objfile, s)
1334 bv = BLOCKVECTOR (s);
1335 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1336 sym = lookup_block_symbol (block, name, linkage_name, domain);
1339 block_found = block;
1342 return fixup_symbol_section (sym, (struct objfile *)objfile);
1346 /* Now go through psymtabs. */
1347 ALL_OBJFILE_PSYMTABS (objfile, ps)
1350 && lookup_partial_symbol (ps, name, linkage_name,
1353 s = PSYMTAB_TO_SYMTAB (ps);
1354 bv = BLOCKVECTOR (s);
1355 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1356 sym = lookup_block_symbol (block, name, linkage_name, domain);
1359 return fixup_symbol_section (sym, (struct objfile *)objfile);
1366 /* Check to see if the symbol is defined in one of the symtabs.
1367 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1368 depending on whether or not we want to search global symbols or
1371 static struct symbol *
1372 lookup_symbol_aux_symtabs (int block_index,
1373 const char *name, const char *linkage_name,
1374 const domain_enum domain,
1375 struct symtab **symtab)
1378 struct objfile *objfile;
1379 struct blockvector *bv;
1380 const struct block *block;
1383 ALL_PRIMARY_SYMTABS (objfile, s)
1385 bv = BLOCKVECTOR (s);
1386 block = BLOCKVECTOR_BLOCK (bv, block_index);
1387 sym = lookup_block_symbol (block, name, linkage_name, domain);
1390 block_found = block;
1393 return fixup_symbol_section (sym, objfile);
1400 /* Check to see if the symbol is defined in one of the partial
1401 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1402 STATIC_BLOCK, depending on whether or not we want to search global
1403 symbols or static symbols. */
1405 static struct symbol *
1406 lookup_symbol_aux_psymtabs (int block_index, const char *name,
1407 const char *linkage_name,
1408 const domain_enum domain,
1409 struct symtab **symtab)
1412 struct objfile *objfile;
1413 struct blockvector *bv;
1414 const struct block *block;
1415 struct partial_symtab *ps;
1417 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
1419 ALL_PSYMTABS (objfile, ps)
1422 && lookup_partial_symbol (ps, name, linkage_name,
1423 psymtab_index, domain))
1425 s = PSYMTAB_TO_SYMTAB (ps);
1426 bv = BLOCKVECTOR (s);
1427 block = BLOCKVECTOR_BLOCK (bv, block_index);
1428 sym = lookup_block_symbol (block, name, linkage_name, domain);
1431 /* This shouldn't be necessary, but as a last resort try
1432 looking in the statics even though the psymtab claimed
1433 the symbol was global, or vice-versa. It's possible
1434 that the psymtab gets it wrong in some cases. */
1436 /* FIXME: carlton/2002-09-30: Should we really do that?
1437 If that happens, isn't it likely to be a GDB error, in
1438 which case we should fix the GDB error rather than
1439 silently dealing with it here? So I'd vote for
1440 removing the check for the symbol in the other
1442 block = BLOCKVECTOR_BLOCK (bv,
1443 block_index == GLOBAL_BLOCK ?
1444 STATIC_BLOCK : GLOBAL_BLOCK);
1445 sym = lookup_block_symbol (block, name, linkage_name, domain);
1447 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>)."),
1448 block_index == GLOBAL_BLOCK ? "global" : "static",
1449 name, ps->filename, name, name);
1453 return fixup_symbol_section (sym, objfile);
1460 /* A default version of lookup_symbol_nonlocal for use by languages
1461 that can't think of anything better to do. This implements the C
1465 basic_lookup_symbol_nonlocal (const char *name,
1466 const char *linkage_name,
1467 const struct block *block,
1468 const domain_enum domain,
1469 struct symtab **symtab)
1473 /* NOTE: carlton/2003-05-19: The comments below were written when
1474 this (or what turned into this) was part of lookup_symbol_aux;
1475 I'm much less worried about these questions now, since these
1476 decisions have turned out well, but I leave these comments here
1479 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1480 not it would be appropriate to search the current global block
1481 here as well. (That's what this code used to do before the
1482 is_a_field_of_this check was moved up.) On the one hand, it's
1483 redundant with the lookup_symbol_aux_symtabs search that happens
1484 next. On the other hand, if decode_line_1 is passed an argument
1485 like filename:var, then the user presumably wants 'var' to be
1486 searched for in filename. On the third hand, there shouldn't be
1487 multiple global variables all of which are named 'var', and it's
1488 not like decode_line_1 has ever restricted its search to only
1489 global variables in a single filename. All in all, only
1490 searching the static block here seems best: it's correct and it's
1493 /* NOTE: carlton/2002-12-05: There's also a possible performance
1494 issue here: if you usually search for global symbols in the
1495 current file, then it would be slightly better to search the
1496 current global block before searching all the symtabs. But there
1497 are other factors that have a much greater effect on performance
1498 than that one, so I don't think we should worry about that for
1501 sym = lookup_symbol_static (name, linkage_name, block, domain, symtab);
1505 return lookup_symbol_global (name, linkage_name, block, domain, symtab);
1508 /* Lookup a symbol in the static block associated to BLOCK, if there
1509 is one; do nothing if BLOCK is NULL or a global block. */
1512 lookup_symbol_static (const char *name,
1513 const char *linkage_name,
1514 const struct block *block,
1515 const domain_enum domain,
1516 struct symtab **symtab)
1518 const struct block *static_block = block_static_block (block);
1520 if (static_block != NULL)
1521 return lookup_symbol_aux_block (name, linkage_name, static_block,
1527 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1531 lookup_symbol_global (const char *name,
1532 const char *linkage_name,
1533 const struct block *block,
1534 const domain_enum domain,
1535 struct symtab **symtab)
1537 struct symbol *sym = NULL;
1538 struct objfile *objfile = NULL;
1540 /* Call library-specific lookup procedure. */
1541 objfile = lookup_objfile_from_block (block);
1542 if (objfile != NULL)
1543 sym = solib_global_lookup (objfile, name, linkage_name, domain, symtab);
1547 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name,
1552 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name,
1556 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1557 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1558 linkage name matches it. Check the global symbols if GLOBAL, the
1559 static symbols if not */
1561 struct partial_symbol *
1562 lookup_partial_symbol (struct partial_symtab *pst, const char *name,
1563 const char *linkage_name, int global,
1566 struct partial_symbol *temp;
1567 struct partial_symbol **start, **psym;
1568 struct partial_symbol **top, **real_top, **bottom, **center;
1569 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1570 int do_linear_search = 1;
1577 pst->objfile->global_psymbols.list + pst->globals_offset :
1578 pst->objfile->static_psymbols.list + pst->statics_offset);
1580 if (global) /* This means we can use a binary search. */
1582 do_linear_search = 0;
1584 /* Binary search. This search is guaranteed to end with center
1585 pointing at the earliest partial symbol whose name might be
1586 correct. At that point *all* partial symbols with an
1587 appropriate name will be checked against the correct
1591 top = start + length - 1;
1593 while (top > bottom)
1595 center = bottom + (top - bottom) / 2;
1596 if (!(center < top))
1597 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
1598 if (!do_linear_search
1599 && (SYMBOL_LANGUAGE (*center) == language_java))
1601 do_linear_search = 1;
1603 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0)
1609 bottom = center + 1;
1612 if (!(top == bottom))
1613 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
1615 while (top <= real_top
1616 && (linkage_name != NULL
1617 ? strcmp (SYMBOL_LINKAGE_NAME (*top), linkage_name) == 0
1618 : SYMBOL_MATCHES_SEARCH_NAME (*top,name)))
1620 if (SYMBOL_DOMAIN (*top) == domain)
1628 /* Can't use a binary search or else we found during the binary search that
1629 we should also do a linear search. */
1631 if (do_linear_search)
1633 for (psym = start; psym < start + length; psym++)
1635 if (domain == SYMBOL_DOMAIN (*psym))
1637 if (linkage_name != NULL
1638 ? strcmp (SYMBOL_LINKAGE_NAME (*psym), linkage_name) == 0
1639 : SYMBOL_MATCHES_SEARCH_NAME (*psym, name))
1650 /* Look up a type named NAME in the struct_domain. The type returned
1651 must not be opaque -- i.e., must have at least one field
1655 lookup_transparent_type (const char *name)
1657 return current_language->la_lookup_transparent_type (name);
1660 /* The standard implementation of lookup_transparent_type. This code
1661 was modeled on lookup_symbol -- the parts not relevant to looking
1662 up types were just left out. In particular it's assumed here that
1663 types are available in struct_domain and only at file-static or
1667 basic_lookup_transparent_type (const char *name)
1670 struct symtab *s = NULL;
1671 struct partial_symtab *ps;
1672 struct blockvector *bv;
1673 struct objfile *objfile;
1674 struct block *block;
1676 /* Now search all the global symbols. Do the symtab's first, then
1677 check the psymtab's. If a psymtab indicates the existence
1678 of the desired name as a global, then do psymtab-to-symtab
1679 conversion on the fly and return the found symbol. */
1681 ALL_PRIMARY_SYMTABS (objfile, s)
1683 bv = BLOCKVECTOR (s);
1684 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1685 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1686 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1688 return SYMBOL_TYPE (sym);
1692 ALL_PSYMTABS (objfile, ps)
1694 if (!ps->readin && lookup_partial_symbol (ps, name, NULL,
1697 s = PSYMTAB_TO_SYMTAB (ps);
1698 bv = BLOCKVECTOR (s);
1699 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1700 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1703 /* This shouldn't be necessary, but as a last resort
1704 * try looking in the statics even though the psymtab
1705 * claimed the symbol was global. It's possible that
1706 * the psymtab gets it wrong in some cases.
1708 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1709 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1711 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1712 %s may be an inlined function, or may be a template function\n\
1713 (if a template, try specifying an instantiation: %s<type>)."),
1714 name, ps->filename, name, name);
1716 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1717 return SYMBOL_TYPE (sym);
1721 /* Now search the static file-level symbols.
1722 Not strictly correct, but more useful than an error.
1723 Do the symtab's first, then
1724 check the psymtab's. If a psymtab indicates the existence
1725 of the desired name as a file-level static, then do psymtab-to-symtab
1726 conversion on the fly and return the found symbol.
1729 ALL_PRIMARY_SYMTABS (objfile, s)
1731 bv = BLOCKVECTOR (s);
1732 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1733 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1734 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1736 return SYMBOL_TYPE (sym);
1740 ALL_PSYMTABS (objfile, ps)
1742 if (!ps->readin && lookup_partial_symbol (ps, name, NULL, 0, STRUCT_DOMAIN))
1744 s = PSYMTAB_TO_SYMTAB (ps);
1745 bv = BLOCKVECTOR (s);
1746 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1747 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1750 /* This shouldn't be necessary, but as a last resort
1751 * try looking in the globals even though the psymtab
1752 * claimed the symbol was static. It's possible that
1753 * the psymtab gets it wrong in some cases.
1755 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1756 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1758 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1759 %s may be an inlined function, or may be a template function\n\
1760 (if a template, try specifying an instantiation: %s<type>)."),
1761 name, ps->filename, name, name);
1763 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1764 return SYMBOL_TYPE (sym);
1767 return (struct type *) 0;
1771 /* Find the psymtab containing main(). */
1772 /* FIXME: What about languages without main() or specially linked
1773 executables that have no main() ? */
1775 struct partial_symtab *
1776 find_main_psymtab (void)
1778 struct partial_symtab *pst;
1779 struct objfile *objfile;
1781 ALL_PSYMTABS (objfile, pst)
1783 if (lookup_partial_symbol (pst, main_name (), NULL, 1, VAR_DOMAIN))
1791 /* Search BLOCK for symbol NAME in DOMAIN.
1793 Note that if NAME is the demangled form of a C++ symbol, we will fail
1794 to find a match during the binary search of the non-encoded names, but
1795 for now we don't worry about the slight inefficiency of looking for
1796 a match we'll never find, since it will go pretty quick. Once the
1797 binary search terminates, we drop through and do a straight linear
1798 search on the symbols. Each symbol which is marked as being a ObjC/C++
1799 symbol (language_cplus or language_objc set) has both the encoded and
1800 non-encoded names tested for a match.
1802 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1803 particular mangled name.
1807 lookup_block_symbol (const struct block *block, const char *name,
1808 const char *linkage_name,
1809 const domain_enum domain)
1811 struct dict_iterator iter;
1814 if (!BLOCK_FUNCTION (block))
1816 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1818 sym = dict_iter_name_next (name, &iter))
1820 if (SYMBOL_DOMAIN (sym) == domain
1821 && (linkage_name != NULL
1822 ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
1829 /* Note that parameter symbols do not always show up last in the
1830 list; this loop makes sure to take anything else other than
1831 parameter symbols first; it only uses parameter symbols as a
1832 last resort. Note that this only takes up extra computation
1835 struct symbol *sym_found = NULL;
1837 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1839 sym = dict_iter_name_next (name, &iter))
1841 if (SYMBOL_DOMAIN (sym) == domain
1842 && (linkage_name != NULL
1843 ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
1846 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1847 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1848 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1849 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1850 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1851 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG &&
1852 SYMBOL_CLASS (sym) != LOC_COMPUTED_ARG)
1858 return (sym_found); /* Will be NULL if not found. */
1862 /* Find the symtab associated with PC and SECTION. Look through the
1863 psymtabs and read in another symtab if necessary. */
1866 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1869 struct blockvector *bv;
1870 struct symtab *s = NULL;
1871 struct symtab *best_s = NULL;
1872 struct partial_symtab *ps;
1873 struct objfile *objfile;
1874 CORE_ADDR distance = 0;
1875 struct minimal_symbol *msymbol;
1877 /* If we know that this is not a text address, return failure. This is
1878 necessary because we loop based on the block's high and low code
1879 addresses, which do not include the data ranges, and because
1880 we call find_pc_sect_psymtab which has a similar restriction based
1881 on the partial_symtab's texthigh and textlow. */
1882 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1884 && (msymbol->type == mst_data
1885 || msymbol->type == mst_bss
1886 || msymbol->type == mst_abs
1887 || msymbol->type == mst_file_data
1888 || msymbol->type == mst_file_bss))
1891 /* Search all symtabs for the one whose file contains our address, and which
1892 is the smallest of all the ones containing the address. This is designed
1893 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1894 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1895 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1897 This happens for native ecoff format, where code from included files
1898 gets its own symtab. The symtab for the included file should have
1899 been read in already via the dependency mechanism.
1900 It might be swifter to create several symtabs with the same name
1901 like xcoff does (I'm not sure).
1903 It also happens for objfiles that have their functions reordered.
1904 For these, the symtab we are looking for is not necessarily read in. */
1906 ALL_PRIMARY_SYMTABS (objfile, s)
1908 bv = BLOCKVECTOR (s);
1909 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1911 if (BLOCK_START (b) <= pc
1912 && BLOCK_END (b) > pc
1914 || BLOCK_END (b) - BLOCK_START (b) < distance))
1916 /* For an objfile that has its functions reordered,
1917 find_pc_psymtab will find the proper partial symbol table
1918 and we simply return its corresponding symtab. */
1919 /* In order to better support objfiles that contain both
1920 stabs and coff debugging info, we continue on if a psymtab
1922 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1924 ps = find_pc_sect_psymtab (pc, section);
1926 return PSYMTAB_TO_SYMTAB (ps);
1930 struct dict_iterator iter;
1931 struct symbol *sym = NULL;
1933 ALL_BLOCK_SYMBOLS (b, iter, sym)
1935 fixup_symbol_section (sym, objfile);
1936 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym), section))
1940 continue; /* no symbol in this symtab matches section */
1942 distance = BLOCK_END (b) - BLOCK_START (b);
1951 ps = find_pc_sect_psymtab (pc, section);
1955 /* Might want to error() here (in case symtab is corrupt and
1956 will cause a core dump), but maybe we can successfully
1957 continue, so let's not. */
1959 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
1961 s = PSYMTAB_TO_SYMTAB (ps);
1966 /* Find the symtab associated with PC. Look through the psymtabs and
1967 read in another symtab if necessary. Backward compatibility, no section */
1970 find_pc_symtab (CORE_ADDR pc)
1972 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1976 /* Find the source file and line number for a given PC value and SECTION.
1977 Return a structure containing a symtab pointer, a line number,
1978 and a pc range for the entire source line.
1979 The value's .pc field is NOT the specified pc.
1980 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1981 use the line that ends there. Otherwise, in that case, the line
1982 that begins there is used. */
1984 /* The big complication here is that a line may start in one file, and end just
1985 before the start of another file. This usually occurs when you #include
1986 code in the middle of a subroutine. To properly find the end of a line's PC
1987 range, we must search all symtabs associated with this compilation unit, and
1988 find the one whose first PC is closer than that of the next line in this
1991 /* If it's worth the effort, we could be using a binary search. */
1993 struct symtab_and_line
1994 find_pc_sect_line (CORE_ADDR pc, struct bfd_section *section, int notcurrent)
1997 struct linetable *l;
2000 struct linetable_entry *item;
2001 struct symtab_and_line val;
2002 struct blockvector *bv;
2003 struct minimal_symbol *msymbol;
2004 struct minimal_symbol *mfunsym;
2006 /* Info on best line seen so far, and where it starts, and its file. */
2008 struct linetable_entry *best = NULL;
2009 CORE_ADDR best_end = 0;
2010 struct symtab *best_symtab = 0;
2012 /* Store here the first line number
2013 of a file which contains the line at the smallest pc after PC.
2014 If we don't find a line whose range contains PC,
2015 we will use a line one less than this,
2016 with a range from the start of that file to the first line's pc. */
2017 struct linetable_entry *alt = NULL;
2018 struct symtab *alt_symtab = 0;
2020 /* Info on best line seen in this file. */
2022 struct linetable_entry *prev;
2024 /* If this pc is not from the current frame,
2025 it is the address of the end of a call instruction.
2026 Quite likely that is the start of the following statement.
2027 But what we want is the statement containing the instruction.
2028 Fudge the pc to make sure we get that. */
2030 init_sal (&val); /* initialize to zeroes */
2032 /* It's tempting to assume that, if we can't find debugging info for
2033 any function enclosing PC, that we shouldn't search for line
2034 number info, either. However, GAS can emit line number info for
2035 assembly files --- very helpful when debugging hand-written
2036 assembly code. In such a case, we'd have no debug info for the
2037 function, but we would have line info. */
2042 /* elz: added this because this function returned the wrong
2043 information if the pc belongs to a stub (import/export)
2044 to call a shlib function. This stub would be anywhere between
2045 two functions in the target, and the line info was erroneously
2046 taken to be the one of the line before the pc.
2048 /* RT: Further explanation:
2050 * We have stubs (trampolines) inserted between procedures.
2052 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2053 * exists in the main image.
2055 * In the minimal symbol table, we have a bunch of symbols
2056 * sorted by start address. The stubs are marked as "trampoline",
2057 * the others appear as text. E.g.:
2059 * Minimal symbol table for main image
2060 * main: code for main (text symbol)
2061 * shr1: stub (trampoline symbol)
2062 * foo: code for foo (text symbol)
2064 * Minimal symbol table for "shr1" image:
2066 * shr1: code for shr1 (text symbol)
2069 * So the code below is trying to detect if we are in the stub
2070 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2071 * and if found, do the symbolization from the real-code address
2072 * rather than the stub address.
2074 * Assumptions being made about the minimal symbol table:
2075 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2076 * if we're really in the trampoline. If we're beyond it (say
2077 * we're in "foo" in the above example), it'll have a closer
2078 * symbol (the "foo" text symbol for example) and will not
2079 * return the trampoline.
2080 * 2. lookup_minimal_symbol_text() will find a real text symbol
2081 * corresponding to the trampoline, and whose address will
2082 * be different than the trampoline address. I put in a sanity
2083 * check for the address being the same, to avoid an
2084 * infinite recursion.
2086 msymbol = lookup_minimal_symbol_by_pc (pc);
2087 if (msymbol != NULL)
2088 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
2090 mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol),
2092 if (mfunsym == NULL)
2093 /* I eliminated this warning since it is coming out
2094 * in the following situation:
2095 * gdb shmain // test program with shared libraries
2096 * (gdb) break shr1 // function in shared lib
2097 * Warning: In stub for ...
2098 * In the above situation, the shared lib is not loaded yet,
2099 * so of course we can't find the real func/line info,
2100 * but the "break" still works, and the warning is annoying.
2101 * So I commented out the warning. RT */
2102 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2104 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
2105 /* Avoid infinite recursion */
2106 /* See above comment about why warning is commented out */
2107 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2110 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
2114 s = find_pc_sect_symtab (pc, section);
2117 /* if no symbol information, return previous pc */
2124 bv = BLOCKVECTOR (s);
2126 /* Look at all the symtabs that share this blockvector.
2127 They all have the same apriori range, that we found was right;
2128 but they have different line tables. */
2130 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
2132 /* Find the best line in this symtab. */
2139 /* I think len can be zero if the symtab lacks line numbers
2140 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2141 I'm not sure which, and maybe it depends on the symbol
2147 item = l->item; /* Get first line info */
2149 /* Is this file's first line closer than the first lines of other files?
2150 If so, record this file, and its first line, as best alternate. */
2151 if (item->pc > pc && (!alt || item->pc < alt->pc))
2157 for (i = 0; i < len; i++, item++)
2159 /* Leave prev pointing to the linetable entry for the last line
2160 that started at or before PC. */
2167 /* At this point, prev points at the line whose start addr is <= pc, and
2168 item points at the next line. If we ran off the end of the linetable
2169 (pc >= start of the last line), then prev == item. If pc < start of
2170 the first line, prev will not be set. */
2172 /* Is this file's best line closer than the best in the other files?
2173 If so, record this file, and its best line, as best so far. Don't
2174 save prev if it represents the end of a function (i.e. line number
2175 0) instead of a real line. */
2177 if (prev && prev->line && (!best || prev->pc > best->pc))
2182 /* Discard BEST_END if it's before the PC of the current BEST. */
2183 if (best_end <= best->pc)
2187 /* If another line (denoted by ITEM) is in the linetable and its
2188 PC is after BEST's PC, but before the current BEST_END, then
2189 use ITEM's PC as the new best_end. */
2190 if (best && i < len && item->pc > best->pc
2191 && (best_end == 0 || best_end > item->pc))
2192 best_end = item->pc;
2197 /* If we didn't find any line number info, just return zeros.
2198 We used to return alt->line - 1 here, but that could be
2199 anywhere; if we don't have line number info for this PC,
2200 don't make some up. */
2203 else if (best->line == 0)
2205 /* If our best fit is in a range of PC's for which no line
2206 number info is available (line number is zero) then we didn't
2207 find any valid line information. */
2212 val.symtab = best_symtab;
2213 val.line = best->line;
2215 if (best_end && (!alt || best_end < alt->pc))
2220 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2222 val.section = section;
2226 /* Backward compatibility (no section) */
2228 struct symtab_and_line
2229 find_pc_line (CORE_ADDR pc, int notcurrent)
2233 section = find_pc_overlay (pc);
2234 if (pc_in_unmapped_range (pc, section))
2235 pc = overlay_mapped_address (pc, section);
2236 return find_pc_sect_line (pc, section, notcurrent);
2239 /* Find line number LINE in any symtab whose name is the same as
2242 If found, return the symtab that contains the linetable in which it was
2243 found, set *INDEX to the index in the linetable of the best entry
2244 found, and set *EXACT_MATCH nonzero if the value returned is an
2247 If not found, return NULL. */
2250 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2254 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2258 struct linetable *best_linetable;
2259 struct symtab *best_symtab;
2261 /* First try looking it up in the given symtab. */
2262 best_linetable = LINETABLE (symtab);
2263 best_symtab = symtab;
2264 best_index = find_line_common (best_linetable, line, &exact);
2265 if (best_index < 0 || !exact)
2267 /* Didn't find an exact match. So we better keep looking for
2268 another symtab with the same name. In the case of xcoff,
2269 multiple csects for one source file (produced by IBM's FORTRAN
2270 compiler) produce multiple symtabs (this is unavoidable
2271 assuming csects can be at arbitrary places in memory and that
2272 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2274 /* BEST is the smallest linenumber > LINE so far seen,
2275 or 0 if none has been seen so far.
2276 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2279 struct objfile *objfile;
2282 if (best_index >= 0)
2283 best = best_linetable->item[best_index].line;
2287 ALL_SYMTABS (objfile, s)
2289 struct linetable *l;
2292 if (strcmp (symtab->filename, s->filename) != 0)
2295 ind = find_line_common (l, line, &exact);
2305 if (best == 0 || l->item[ind].line < best)
2307 best = l->item[ind].line;
2320 *index = best_index;
2322 *exact_match = exact;
2327 /* Set the PC value for a given source file and line number and return true.
2328 Returns zero for invalid line number (and sets the PC to 0).
2329 The source file is specified with a struct symtab. */
2332 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2334 struct linetable *l;
2341 symtab = find_line_symtab (symtab, line, &ind, NULL);
2344 l = LINETABLE (symtab);
2345 *pc = l->item[ind].pc;
2352 /* Find the range of pc values in a line.
2353 Store the starting pc of the line into *STARTPTR
2354 and the ending pc (start of next line) into *ENDPTR.
2355 Returns 1 to indicate success.
2356 Returns 0 if could not find the specified line. */
2359 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2362 CORE_ADDR startaddr;
2363 struct symtab_and_line found_sal;
2366 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2369 /* This whole function is based on address. For example, if line 10 has
2370 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2371 "info line *0x123" should say the line goes from 0x100 to 0x200
2372 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2373 This also insures that we never give a range like "starts at 0x134
2374 and ends at 0x12c". */
2376 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2377 if (found_sal.line != sal.line)
2379 /* The specified line (sal) has zero bytes. */
2380 *startptr = found_sal.pc;
2381 *endptr = found_sal.pc;
2385 *startptr = found_sal.pc;
2386 *endptr = found_sal.end;
2391 /* Given a line table and a line number, return the index into the line
2392 table for the pc of the nearest line whose number is >= the specified one.
2393 Return -1 if none is found. The value is >= 0 if it is an index.
2395 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2398 find_line_common (struct linetable *l, int lineno,
2404 /* BEST is the smallest linenumber > LINENO so far seen,
2405 or 0 if none has been seen so far.
2406 BEST_INDEX identifies the item for it. */
2408 int best_index = -1;
2417 for (i = 0; i < len; i++)
2419 struct linetable_entry *item = &(l->item[i]);
2421 if (item->line == lineno)
2423 /* Return the first (lowest address) entry which matches. */
2428 if (item->line > lineno && (best == 0 || item->line < best))
2435 /* If we got here, we didn't get an exact match. */
2442 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2444 struct symtab_and_line sal;
2445 sal = find_pc_line (pc, 0);
2448 return sal.symtab != 0;
2451 /* Given a function symbol SYM, find the symtab and line for the start
2453 If the argument FUNFIRSTLINE is nonzero, we want the first line
2454 of real code inside the function. */
2456 struct symtab_and_line
2457 find_function_start_sal (struct symbol *sym, int funfirstline)
2460 struct symtab_and_line sal;
2462 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2463 fixup_symbol_section (sym, NULL);
2465 { /* skip "first line" of function (which is actually its prologue) */
2466 asection *section = SYMBOL_BFD_SECTION (sym);
2467 /* If function is in an unmapped overlay, use its unmapped LMA
2468 address, so that gdbarch_skip_prologue has something unique to work
2470 if (section_is_overlay (section) &&
2471 !section_is_mapped (section))
2472 pc = overlay_unmapped_address (pc, section);
2474 pc += gdbarch_deprecated_function_start_offset (current_gdbarch);
2475 pc = gdbarch_skip_prologue (current_gdbarch, pc);
2477 /* For overlays, map pc back into its mapped VMA range */
2478 pc = overlay_mapped_address (pc, section);
2480 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2482 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2483 line is still part of the same function. */
2485 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2486 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2488 /* First pc of next line */
2490 /* Recalculate the line number (might not be N+1). */
2491 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2498 /* If P is of the form "operator[ \t]+..." where `...' is
2499 some legitimate operator text, return a pointer to the
2500 beginning of the substring of the operator text.
2501 Otherwise, return "". */
2503 operator_chars (char *p, char **end)
2506 if (strncmp (p, "operator", 8))
2510 /* Don't get faked out by `operator' being part of a longer
2512 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2515 /* Allow some whitespace between `operator' and the operator symbol. */
2516 while (*p == ' ' || *p == '\t')
2519 /* Recognize 'operator TYPENAME'. */
2521 if (isalpha (*p) || *p == '_' || *p == '$')
2524 while (isalnum (*q) || *q == '_' || *q == '$')
2533 case '\\': /* regexp quoting */
2536 if (p[2] == '=') /* 'operator\*=' */
2538 else /* 'operator\*' */
2542 else if (p[1] == '[')
2545 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2546 else if (p[2] == '\\' && p[3] == ']')
2548 *end = p + 4; /* 'operator\[\]' */
2552 error (_("nothing is allowed between '[' and ']'"));
2556 /* Gratuitous qoute: skip it and move on. */
2578 if (p[0] == '-' && p[1] == '>')
2580 /* Struct pointer member operator 'operator->'. */
2583 *end = p + 3; /* 'operator->*' */
2586 else if (p[2] == '\\')
2588 *end = p + 4; /* Hopefully 'operator->\*' */
2593 *end = p + 2; /* 'operator->' */
2597 if (p[1] == '=' || p[1] == p[0])
2608 error (_("`operator ()' must be specified without whitespace in `()'"));
2613 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2618 error (_("`operator []' must be specified without whitespace in `[]'"));
2622 error (_("`operator %s' not supported"), p);
2631 /* If FILE is not already in the table of files, return zero;
2632 otherwise return non-zero. Optionally add FILE to the table if ADD
2633 is non-zero. If *FIRST is non-zero, forget the old table
2636 filename_seen (const char *file, int add, int *first)
2638 /* Table of files seen so far. */
2639 static const char **tab = NULL;
2640 /* Allocated size of tab in elements.
2641 Start with one 256-byte block (when using GNU malloc.c).
2642 24 is the malloc overhead when range checking is in effect. */
2643 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2644 /* Current size of tab in elements. */
2645 static int tab_cur_size;
2651 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2655 /* Is FILE in tab? */
2656 for (p = tab; p < tab + tab_cur_size; p++)
2657 if (strcmp (*p, file) == 0)
2660 /* No; maybe add it to tab. */
2663 if (tab_cur_size == tab_alloc_size)
2665 tab_alloc_size *= 2;
2666 tab = (const char **) xrealloc ((char *) tab,
2667 tab_alloc_size * sizeof (*tab));
2669 tab[tab_cur_size++] = file;
2675 /* Slave routine for sources_info. Force line breaks at ,'s.
2676 NAME is the name to print and *FIRST is nonzero if this is the first
2677 name printed. Set *FIRST to zero. */
2679 output_source_filename (const char *name, int *first)
2681 /* Since a single source file can result in several partial symbol
2682 tables, we need to avoid printing it more than once. Note: if
2683 some of the psymtabs are read in and some are not, it gets
2684 printed both under "Source files for which symbols have been
2685 read" and "Source files for which symbols will be read in on
2686 demand". I consider this a reasonable way to deal with the
2687 situation. I'm not sure whether this can also happen for
2688 symtabs; it doesn't hurt to check. */
2690 /* Was NAME already seen? */
2691 if (filename_seen (name, 1, first))
2693 /* Yes; don't print it again. */
2696 /* No; print it and reset *FIRST. */
2703 printf_filtered (", ");
2707 fputs_filtered (name, gdb_stdout);
2711 sources_info (char *ignore, int from_tty)
2714 struct partial_symtab *ps;
2715 struct objfile *objfile;
2718 if (!have_full_symbols () && !have_partial_symbols ())
2720 error (_("No symbol table is loaded. Use the \"file\" command."));
2723 printf_filtered ("Source files for which symbols have been read in:\n\n");
2726 ALL_SYMTABS (objfile, s)
2728 const char *fullname = symtab_to_fullname (s);
2729 output_source_filename (fullname ? fullname : s->filename, &first);
2731 printf_filtered ("\n\n");
2733 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2736 ALL_PSYMTABS (objfile, ps)
2740 const char *fullname = psymtab_to_fullname (ps);
2741 output_source_filename (fullname ? fullname : ps->filename, &first);
2744 printf_filtered ("\n");
2748 file_matches (char *file, char *files[], int nfiles)
2752 if (file != NULL && nfiles != 0)
2754 for (i = 0; i < nfiles; i++)
2756 if (strcmp (files[i], lbasename (file)) == 0)
2760 else if (nfiles == 0)
2765 /* Free any memory associated with a search. */
2767 free_search_symbols (struct symbol_search *symbols)
2769 struct symbol_search *p;
2770 struct symbol_search *next;
2772 for (p = symbols; p != NULL; p = next)
2780 do_free_search_symbols_cleanup (void *symbols)
2782 free_search_symbols (symbols);
2786 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2788 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2791 /* Helper function for sort_search_symbols and qsort. Can only
2792 sort symbols, not minimal symbols. */
2794 compare_search_syms (const void *sa, const void *sb)
2796 struct symbol_search **sym_a = (struct symbol_search **) sa;
2797 struct symbol_search **sym_b = (struct symbol_search **) sb;
2799 return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol),
2800 SYMBOL_PRINT_NAME ((*sym_b)->symbol));
2803 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2804 prevtail where it is, but update its next pointer to point to
2805 the first of the sorted symbols. */
2806 static struct symbol_search *
2807 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2809 struct symbol_search **symbols, *symp, *old_next;
2812 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2814 symp = prevtail->next;
2815 for (i = 0; i < nfound; i++)
2820 /* Generally NULL. */
2823 qsort (symbols, nfound, sizeof (struct symbol_search *),
2824 compare_search_syms);
2827 for (i = 0; i < nfound; i++)
2829 symp->next = symbols[i];
2832 symp->next = old_next;
2838 /* Search the symbol table for matches to the regular expression REGEXP,
2839 returning the results in *MATCHES.
2841 Only symbols of KIND are searched:
2842 FUNCTIONS_DOMAIN - search all functions
2843 TYPES_DOMAIN - search all type names
2844 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2845 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2846 and constants (enums)
2848 free_search_symbols should be called when *MATCHES is no longer needed.
2850 The results are sorted locally; each symtab's global and static blocks are
2851 separately alphabetized.
2854 search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[],
2855 struct symbol_search **matches)
2858 struct partial_symtab *ps;
2859 struct blockvector *bv;
2862 struct dict_iterator iter;
2864 struct partial_symbol **psym;
2865 struct objfile *objfile;
2866 struct minimal_symbol *msymbol;
2869 static enum minimal_symbol_type types[]
2871 {mst_data, mst_text, mst_abs, mst_unknown};
2872 static enum minimal_symbol_type types2[]
2874 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2875 static enum minimal_symbol_type types3[]
2877 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2878 static enum minimal_symbol_type types4[]
2880 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2881 enum minimal_symbol_type ourtype;
2882 enum minimal_symbol_type ourtype2;
2883 enum minimal_symbol_type ourtype3;
2884 enum minimal_symbol_type ourtype4;
2885 struct symbol_search *sr;
2886 struct symbol_search *psr;
2887 struct symbol_search *tail;
2888 struct cleanup *old_chain = NULL;
2890 if (kind < VARIABLES_DOMAIN)
2891 error (_("must search on specific domain"));
2893 ourtype = types[(int) (kind - VARIABLES_DOMAIN)];
2894 ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)];
2895 ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)];
2896 ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)];
2898 sr = *matches = NULL;
2903 /* Make sure spacing is right for C++ operators.
2904 This is just a courtesy to make the matching less sensitive
2905 to how many spaces the user leaves between 'operator'
2906 and <TYPENAME> or <OPERATOR>. */
2908 char *opname = operator_chars (regexp, &opend);
2911 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2912 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2914 /* There should 1 space between 'operator' and 'TYPENAME'. */
2915 if (opname[-1] != ' ' || opname[-2] == ' ')
2920 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2921 if (opname[-1] == ' ')
2924 /* If wrong number of spaces, fix it. */
2927 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2928 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2933 if (0 != (val = re_comp (regexp)))
2934 error (_("Invalid regexp (%s): %s"), val, regexp);
2937 /* Search through the partial symtabs *first* for all symbols
2938 matching the regexp. That way we don't have to reproduce all of
2939 the machinery below. */
2941 ALL_PSYMTABS (objfile, ps)
2943 struct partial_symbol **bound, **gbound, **sbound;
2949 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2950 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2953 /* Go through all of the symbols stored in a partial
2954 symtab in one loop. */
2955 psym = objfile->global_psymbols.list + ps->globals_offset;
2960 if (bound == gbound && ps->n_static_syms != 0)
2962 psym = objfile->static_psymbols.list + ps->statics_offset;
2973 /* If it would match (logic taken from loop below)
2974 load the file and go on to the next one. We check the
2975 filename here, but that's a bit bogus: we don't know
2976 what file it really comes from until we have full
2977 symtabs. The symbol might be in a header file included by
2978 this psymtab. This only affects Insight. */
2979 if (file_matches (ps->filename, files, nfiles)
2981 || re_exec (SYMBOL_NATURAL_NAME (*psym)) != 0)
2982 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2983 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2984 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2985 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2986 || (kind == METHODS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2988 PSYMTAB_TO_SYMTAB (ps);
2996 /* Here, we search through the minimal symbol tables for functions
2997 and variables that match, and force their symbols to be read.
2998 This is in particular necessary for demangled variable names,
2999 which are no longer put into the partial symbol tables.
3000 The symbol will then be found during the scan of symtabs below.
3002 For functions, find_pc_symtab should succeed if we have debug info
3003 for the function, for variables we have to call lookup_symbol
3004 to determine if the variable has debug info.
3005 If the lookup fails, set found_misc so that we will rescan to print
3006 any matching symbols without debug info.
3009 if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN))
3011 ALL_MSYMBOLS (objfile, msymbol)
3013 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3014 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3015 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3016 MSYMBOL_TYPE (msymbol) == ourtype4)
3019 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
3021 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
3023 /* FIXME: carlton/2003-02-04: Given that the
3024 semantics of lookup_symbol keeps on changing
3025 slightly, it would be a nice idea if we had a
3026 function lookup_symbol_minsym that found the
3027 symbol associated to a given minimal symbol (if
3029 if (kind == FUNCTIONS_DOMAIN
3030 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
3031 (struct block *) NULL,
3033 0, (struct symtab **) NULL)
3042 ALL_PRIMARY_SYMTABS (objfile, s)
3044 bv = BLOCKVECTOR (s);
3045 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
3047 struct symbol_search *prevtail = tail;
3049 b = BLOCKVECTOR_BLOCK (bv, i);
3050 ALL_BLOCK_SYMBOLS (b, iter, sym)
3052 struct symtab *real_symtab = SYMBOL_SYMTAB (sym);
3055 if (file_matches (real_symtab->filename, files, nfiles)
3057 || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0)
3058 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF
3059 && SYMBOL_CLASS (sym) != LOC_BLOCK
3060 && SYMBOL_CLASS (sym) != LOC_CONST)
3061 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK)
3062 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3063 || (kind == METHODS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK))))
3066 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3068 psr->symtab = real_symtab;
3070 psr->msymbol = NULL;
3082 if (prevtail == NULL)
3084 struct symbol_search dummy;
3087 tail = sort_search_symbols (&dummy, nfound);
3090 old_chain = make_cleanup_free_search_symbols (sr);
3093 tail = sort_search_symbols (prevtail, nfound);
3098 /* If there are no eyes, avoid all contact. I mean, if there are
3099 no debug symbols, then print directly from the msymbol_vector. */
3101 if (found_misc || kind != FUNCTIONS_DOMAIN)
3103 ALL_MSYMBOLS (objfile, msymbol)
3105 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3106 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3107 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3108 MSYMBOL_TYPE (msymbol) == ourtype4)
3111 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
3113 /* Functions: Look up by address. */
3114 if (kind != FUNCTIONS_DOMAIN ||
3115 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
3117 /* Variables/Absolutes: Look up by name */
3118 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
3119 (struct block *) NULL, VAR_DOMAIN,
3120 0, (struct symtab **) NULL) == NULL)
3123 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3125 psr->msymbol = msymbol;
3132 old_chain = make_cleanup_free_search_symbols (sr);
3146 discard_cleanups (old_chain);
3149 /* Helper function for symtab_symbol_info, this function uses
3150 the data returned from search_symbols() to print information
3151 regarding the match to gdb_stdout.
3154 print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym,
3155 int block, char *last)
3157 if (last == NULL || strcmp (last, s->filename) != 0)
3159 fputs_filtered ("\nFile ", gdb_stdout);
3160 fputs_filtered (s->filename, gdb_stdout);
3161 fputs_filtered (":\n", gdb_stdout);
3164 if (kind != TYPES_DOMAIN && block == STATIC_BLOCK)
3165 printf_filtered ("static ");
3167 /* Typedef that is not a C++ class */
3168 if (kind == TYPES_DOMAIN
3169 && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN)
3170 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
3171 /* variable, func, or typedef-that-is-c++-class */
3172 else if (kind < TYPES_DOMAIN ||
3173 (kind == TYPES_DOMAIN &&
3174 SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN))
3176 type_print (SYMBOL_TYPE (sym),
3177 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
3178 ? "" : SYMBOL_PRINT_NAME (sym)),
3181 printf_filtered (";\n");
3185 /* This help function for symtab_symbol_info() prints information
3186 for non-debugging symbols to gdb_stdout.
3189 print_msymbol_info (struct minimal_symbol *msymbol)
3193 if (gdbarch_addr_bit (current_gdbarch) <= 32)
3194 tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3195 & (CORE_ADDR) 0xffffffff,
3198 tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3200 printf_filtered ("%s %s\n",
3201 tmp, SYMBOL_PRINT_NAME (msymbol));
3204 /* This is the guts of the commands "info functions", "info types", and
3205 "info variables". It calls search_symbols to find all matches and then
3206 print_[m]symbol_info to print out some useful information about the
3210 symtab_symbol_info (char *regexp, domain_enum kind, int from_tty)
3212 static char *classnames[]
3214 {"variable", "function", "type", "method"};
3215 struct symbol_search *symbols;
3216 struct symbol_search *p;
3217 struct cleanup *old_chain;
3218 char *last_filename = NULL;
3221 /* must make sure that if we're interrupted, symbols gets freed */
3222 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3223 old_chain = make_cleanup_free_search_symbols (symbols);
3225 printf_filtered (regexp
3226 ? "All %ss matching regular expression \"%s\":\n"
3227 : "All defined %ss:\n",
3228 classnames[(int) (kind - VARIABLES_DOMAIN)], regexp);
3230 for (p = symbols; p != NULL; p = p->next)
3234 if (p->msymbol != NULL)
3238 printf_filtered ("\nNon-debugging symbols:\n");
3241 print_msymbol_info (p->msymbol);
3245 print_symbol_info (kind,
3250 last_filename = p->symtab->filename;
3254 do_cleanups (old_chain);
3258 variables_info (char *regexp, int from_tty)
3260 symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty);
3264 functions_info (char *regexp, int from_tty)
3266 symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty);
3271 types_info (char *regexp, int from_tty)
3273 symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty);
3276 /* Breakpoint all functions matching regular expression. */
3279 rbreak_command_wrapper (char *regexp, int from_tty)
3281 rbreak_command (regexp, from_tty);
3285 rbreak_command (char *regexp, int from_tty)
3287 struct symbol_search *ss;
3288 struct symbol_search *p;
3289 struct cleanup *old_chain;
3291 search_symbols (regexp, FUNCTIONS_DOMAIN, 0, (char **) NULL, &ss);
3292 old_chain = make_cleanup_free_search_symbols (ss);
3294 for (p = ss; p != NULL; p = p->next)
3296 if (p->msymbol == NULL)
3298 char *string = alloca (strlen (p->symtab->filename)
3299 + strlen (SYMBOL_LINKAGE_NAME (p->symbol))
3301 strcpy (string, p->symtab->filename);
3302 strcat (string, ":'");
3303 strcat (string, SYMBOL_LINKAGE_NAME (p->symbol));
3304 strcat (string, "'");
3305 break_command (string, from_tty);
3306 print_symbol_info (FUNCTIONS_DOMAIN,
3310 p->symtab->filename);
3314 break_command (SYMBOL_LINKAGE_NAME (p->msymbol), from_tty);
3315 printf_filtered ("<function, no debug info> %s;\n",
3316 SYMBOL_PRINT_NAME (p->msymbol));
3320 do_cleanups (old_chain);
3324 /* Helper routine for make_symbol_completion_list. */
3326 static int return_val_size;
3327 static int return_val_index;
3328 static char **return_val;
3330 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3331 completion_list_add_name \
3332 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3334 /* Test to see if the symbol specified by SYMNAME (which is already
3335 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3336 characters. If so, add it to the current completion list. */
3339 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3340 char *text, char *word)
3345 /* clip symbols that cannot match */
3347 if (strncmp (symname, sym_text, sym_text_len) != 0)
3352 /* We have a match for a completion, so add SYMNAME to the current list
3353 of matches. Note that the name is moved to freshly malloc'd space. */
3357 if (word == sym_text)
3359 new = xmalloc (strlen (symname) + 5);
3360 strcpy (new, symname);
3362 else if (word > sym_text)
3364 /* Return some portion of symname. */
3365 new = xmalloc (strlen (symname) + 5);
3366 strcpy (new, symname + (word - sym_text));
3370 /* Return some of SYM_TEXT plus symname. */
3371 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3372 strncpy (new, word, sym_text - word);
3373 new[sym_text - word] = '\0';
3374 strcat (new, symname);
3377 if (return_val_index + 3 > return_val_size)
3379 newsize = (return_val_size *= 2) * sizeof (char *);
3380 return_val = (char **) xrealloc ((char *) return_val, newsize);
3382 return_val[return_val_index++] = new;
3383 return_val[return_val_index] = NULL;
3387 /* ObjC: In case we are completing on a selector, look as the msymbol
3388 again and feed all the selectors into the mill. */
3391 completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text,
3392 int sym_text_len, char *text, char *word)
3394 static char *tmp = NULL;
3395 static unsigned int tmplen = 0;
3397 char *method, *category, *selector;
3400 method = SYMBOL_NATURAL_NAME (msymbol);
3402 /* Is it a method? */
3403 if ((method[0] != '-') && (method[0] != '+'))
3406 if (sym_text[0] == '[')
3407 /* Complete on shortened method method. */
3408 completion_list_add_name (method + 1, sym_text, sym_text_len, text, word);
3410 while ((strlen (method) + 1) >= tmplen)
3416 tmp = xrealloc (tmp, tmplen);
3418 selector = strchr (method, ' ');
3419 if (selector != NULL)
3422 category = strchr (method, '(');
3424 if ((category != NULL) && (selector != NULL))
3426 memcpy (tmp, method, (category - method));
3427 tmp[category - method] = ' ';
3428 memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1);
3429 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3430 if (sym_text[0] == '[')
3431 completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word);
3434 if (selector != NULL)
3436 /* Complete on selector only. */
3437 strcpy (tmp, selector);
3438 tmp2 = strchr (tmp, ']');
3442 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3446 /* Break the non-quoted text based on the characters which are in
3447 symbols. FIXME: This should probably be language-specific. */
3450 language_search_unquoted_string (char *text, char *p)
3452 for (; p > text; --p)
3454 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3458 if ((current_language->la_language == language_objc))
3460 if (p[-1] == ':') /* might be part of a method name */
3462 else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+'))
3463 p -= 2; /* beginning of a method name */
3464 else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')')
3465 { /* might be part of a method name */
3468 /* Seeing a ' ' or a '(' is not conclusive evidence
3469 that we are in the middle of a method name. However,
3470 finding "-[" or "+[" should be pretty un-ambiguous.
3471 Unfortunately we have to find it now to decide. */
3474 if (isalnum (t[-1]) || t[-1] == '_' ||
3475 t[-1] == ' ' || t[-1] == ':' ||
3476 t[-1] == '(' || t[-1] == ')')
3481 if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+'))
3482 p = t - 2; /* method name detected */
3483 /* else we leave with p unchanged */
3493 /* Return a NULL terminated array of all symbols (regardless of class)
3494 which begin by matching TEXT. If the answer is no symbols, then
3495 the return value is an array which contains only a NULL pointer.
3497 Problem: All of the symbols have to be copied because readline frees them.
3498 I'm not going to worry about this; hopefully there won't be that many. */
3501 make_symbol_completion_list (char *text, char *word)
3505 struct partial_symtab *ps;
3506 struct minimal_symbol *msymbol;
3507 struct objfile *objfile;
3508 struct block *b, *surrounding_static_block = 0;
3509 struct dict_iterator iter;
3511 struct partial_symbol **psym;
3512 /* The symbol we are completing on. Points in same buffer as text. */
3514 /* Length of sym_text. */
3517 /* Now look for the symbol we are supposed to complete on.
3518 FIXME: This should be language-specific. */
3522 char *quote_pos = NULL;
3524 /* First see if this is a quoted string. */
3526 for (p = text; *p != '\0'; ++p)
3528 if (quote_found != '\0')
3530 if (*p == quote_found)
3531 /* Found close quote. */
3533 else if (*p == '\\' && p[1] == quote_found)
3534 /* A backslash followed by the quote character
3535 doesn't end the string. */
3538 else if (*p == '\'' || *p == '"')
3544 if (quote_found == '\'')
3545 /* A string within single quotes can be a symbol, so complete on it. */
3546 sym_text = quote_pos + 1;
3547 else if (quote_found == '"')
3548 /* A double-quoted string is never a symbol, nor does it make sense
3549 to complete it any other way. */
3551 return_val = (char **) xmalloc (sizeof (char *));
3552 return_val[0] = NULL;
3557 /* It is not a quoted string. Break it based on the characters
3558 which are in symbols. */
3561 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3570 sym_text_len = strlen (sym_text);
3572 return_val_size = 100;
3573 return_val_index = 0;
3574 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3575 return_val[0] = NULL;
3577 /* Look through the partial symtabs for all symbols which begin
3578 by matching SYM_TEXT. Add each one that you find to the list. */
3580 ALL_PSYMTABS (objfile, ps)
3582 /* If the psymtab's been read in we'll get it when we search
3583 through the blockvector. */
3587 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3588 psym < (objfile->global_psymbols.list + ps->globals_offset
3589 + ps->n_global_syms);
3592 /* If interrupted, then quit. */
3594 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3597 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3598 psym < (objfile->static_psymbols.list + ps->statics_offset
3599 + ps->n_static_syms);
3603 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3607 /* At this point scan through the misc symbol vectors and add each
3608 symbol you find to the list. Eventually we want to ignore
3609 anything that isn't a text symbol (everything else will be
3610 handled by the psymtab code above). */
3612 ALL_MSYMBOLS (objfile, msymbol)
3615 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3617 completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word);
3620 /* Search upwards from currently selected frame (so that we can
3621 complete on local vars. */
3623 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3625 if (!BLOCK_SUPERBLOCK (b))
3627 surrounding_static_block = b; /* For elmin of dups */
3630 /* Also catch fields of types defined in this places which match our
3631 text string. Only complete on types visible from current context. */
3633 ALL_BLOCK_SYMBOLS (b, iter, sym)
3636 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3637 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3639 struct type *t = SYMBOL_TYPE (sym);
3640 enum type_code c = TYPE_CODE (t);
3642 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3644 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3646 if (TYPE_FIELD_NAME (t, j))
3648 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3649 sym_text, sym_text_len, text, word);
3657 /* Go through the symtabs and check the externs and statics for
3658 symbols which match. */
3660 ALL_PRIMARY_SYMTABS (objfile, s)
3663 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3664 ALL_BLOCK_SYMBOLS (b, iter, sym)
3666 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3670 ALL_PRIMARY_SYMTABS (objfile, s)
3673 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3674 /* Don't do this block twice. */
3675 if (b == surrounding_static_block)
3677 ALL_BLOCK_SYMBOLS (b, iter, sym)
3679 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3683 return (return_val);
3686 /* Like make_symbol_completion_list, but returns a list of symbols
3687 defined in a source file FILE. */
3690 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3695 struct dict_iterator iter;
3696 /* The symbol we are completing on. Points in same buffer as text. */
3698 /* Length of sym_text. */
3701 /* Now look for the symbol we are supposed to complete on.
3702 FIXME: This should be language-specific. */
3706 char *quote_pos = NULL;
3708 /* First see if this is a quoted string. */
3710 for (p = text; *p != '\0'; ++p)
3712 if (quote_found != '\0')
3714 if (*p == quote_found)
3715 /* Found close quote. */
3717 else if (*p == '\\' && p[1] == quote_found)
3718 /* A backslash followed by the quote character
3719 doesn't end the string. */
3722 else if (*p == '\'' || *p == '"')
3728 if (quote_found == '\'')
3729 /* A string within single quotes can be a symbol, so complete on it. */
3730 sym_text = quote_pos + 1;
3731 else if (quote_found == '"')
3732 /* A double-quoted string is never a symbol, nor does it make sense
3733 to complete it any other way. */
3735 return_val = (char **) xmalloc (sizeof (char *));
3736 return_val[0] = NULL;
3741 /* Not a quoted string. */
3742 sym_text = language_search_unquoted_string (text, p);
3746 sym_text_len = strlen (sym_text);
3748 return_val_size = 10;
3749 return_val_index = 0;
3750 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3751 return_val[0] = NULL;
3753 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3755 s = lookup_symtab (srcfile);
3758 /* Maybe they typed the file with leading directories, while the
3759 symbol tables record only its basename. */
3760 const char *tail = lbasename (srcfile);
3763 s = lookup_symtab (tail);
3766 /* If we have no symtab for that file, return an empty list. */
3768 return (return_val);
3770 /* Go through this symtab and check the externs and statics for
3771 symbols which match. */
3773 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3774 ALL_BLOCK_SYMBOLS (b, iter, sym)
3776 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3779 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3780 ALL_BLOCK_SYMBOLS (b, iter, sym)
3782 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3785 return (return_val);
3788 /* A helper function for make_source_files_completion_list. It adds
3789 another file name to a list of possible completions, growing the
3790 list as necessary. */
3793 add_filename_to_list (const char *fname, char *text, char *word,
3794 char ***list, int *list_used, int *list_alloced)
3797 size_t fnlen = strlen (fname);
3799 if (*list_used + 1 >= *list_alloced)
3802 *list = (char **) xrealloc ((char *) *list,
3803 *list_alloced * sizeof (char *));
3808 /* Return exactly fname. */
3809 new = xmalloc (fnlen + 5);
3810 strcpy (new, fname);
3812 else if (word > text)
3814 /* Return some portion of fname. */
3815 new = xmalloc (fnlen + 5);
3816 strcpy (new, fname + (word - text));
3820 /* Return some of TEXT plus fname. */
3821 new = xmalloc (fnlen + (text - word) + 5);
3822 strncpy (new, word, text - word);
3823 new[text - word] = '\0';
3824 strcat (new, fname);
3826 (*list)[*list_used] = new;
3827 (*list)[++*list_used] = NULL;
3831 not_interesting_fname (const char *fname)
3833 static const char *illegal_aliens[] = {
3834 "_globals_", /* inserted by coff_symtab_read */
3839 for (i = 0; illegal_aliens[i]; i++)
3841 if (strcmp (fname, illegal_aliens[i]) == 0)
3847 /* Return a NULL terminated array of all source files whose names
3848 begin with matching TEXT. The file names are looked up in the
3849 symbol tables of this program. If the answer is no matchess, then
3850 the return value is an array which contains only a NULL pointer. */
3853 make_source_files_completion_list (char *text, char *word)
3856 struct partial_symtab *ps;
3857 struct objfile *objfile;
3859 int list_alloced = 1;
3861 size_t text_len = strlen (text);
3862 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3863 const char *base_name;
3867 if (!have_full_symbols () && !have_partial_symbols ())
3870 ALL_SYMTABS (objfile, s)
3872 if (not_interesting_fname (s->filename))
3874 if (!filename_seen (s->filename, 1, &first)
3875 #if HAVE_DOS_BASED_FILE_SYSTEM
3876 && strncasecmp (s->filename, text, text_len) == 0
3878 && strncmp (s->filename, text, text_len) == 0
3882 /* This file matches for a completion; add it to the current
3884 add_filename_to_list (s->filename, text, word,
3885 &list, &list_used, &list_alloced);
3889 /* NOTE: We allow the user to type a base name when the
3890 debug info records leading directories, but not the other
3891 way around. This is what subroutines of breakpoint
3892 command do when they parse file names. */
3893 base_name = lbasename (s->filename);
3894 if (base_name != s->filename
3895 && !filename_seen (base_name, 1, &first)
3896 #if HAVE_DOS_BASED_FILE_SYSTEM
3897 && strncasecmp (base_name, text, text_len) == 0
3899 && strncmp (base_name, text, text_len) == 0
3902 add_filename_to_list (base_name, text, word,
3903 &list, &list_used, &list_alloced);
3907 ALL_PSYMTABS (objfile, ps)
3909 if (not_interesting_fname (ps->filename))
3913 if (!filename_seen (ps->filename, 1, &first)
3914 #if HAVE_DOS_BASED_FILE_SYSTEM
3915 && strncasecmp (ps->filename, text, text_len) == 0
3917 && strncmp (ps->filename, text, text_len) == 0
3921 /* This file matches for a completion; add it to the
3922 current list of matches. */
3923 add_filename_to_list (ps->filename, text, word,
3924 &list, &list_used, &list_alloced);
3929 base_name = lbasename (ps->filename);
3930 if (base_name != ps->filename
3931 && !filename_seen (base_name, 1, &first)
3932 #if HAVE_DOS_BASED_FILE_SYSTEM
3933 && strncasecmp (base_name, text, text_len) == 0
3935 && strncmp (base_name, text, text_len) == 0
3938 add_filename_to_list (base_name, text, word,
3939 &list, &list_used, &list_alloced);
3947 /* Determine if PC is in the prologue of a function. The prologue is the area
3948 between the first instruction of a function, and the first executable line.
3949 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3951 If non-zero, func_start is where we think the prologue starts, possibly
3952 by previous examination of symbol table information.
3956 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
3958 struct symtab_and_line sal;
3959 CORE_ADDR func_addr, func_end;
3961 /* We have several sources of information we can consult to figure
3963 - Compilers usually emit line number info that marks the prologue
3964 as its own "source line". So the ending address of that "line"
3965 is the end of the prologue. If available, this is the most
3967 - The minimal symbols and partial symbols, which can usually tell
3968 us the starting and ending addresses of a function.
3969 - If we know the function's start address, we can call the
3970 architecture-defined gdbarch_skip_prologue function to analyze the
3971 instruction stream and guess where the prologue ends.
3972 - Our `func_start' argument; if non-zero, this is the caller's
3973 best guess as to the function's entry point. At the time of
3974 this writing, handle_inferior_event doesn't get this right, so
3975 it should be our last resort. */
3977 /* Consult the partial symbol table, to find which function
3979 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3981 CORE_ADDR prologue_end;
3983 /* We don't even have minsym information, so fall back to using
3984 func_start, if given. */
3986 return 1; /* We *might* be in a prologue. */
3988 prologue_end = gdbarch_skip_prologue (current_gdbarch, func_start);
3990 return func_start <= pc && pc < prologue_end;
3993 /* If we have line number information for the function, that's
3994 usually pretty reliable. */
3995 sal = find_pc_line (func_addr, 0);
3997 /* Now sal describes the source line at the function's entry point,
3998 which (by convention) is the prologue. The end of that "line",
3999 sal.end, is the end of the prologue.
4001 Note that, for functions whose source code is all on a single
4002 line, the line number information doesn't always end up this way.
4003 So we must verify that our purported end-of-prologue address is
4004 *within* the function, not at its start or end. */
4006 || sal.end <= func_addr
4007 || func_end <= sal.end)
4009 /* We don't have any good line number info, so use the minsym
4010 information, together with the architecture-specific prologue
4012 CORE_ADDR prologue_end = gdbarch_skip_prologue
4013 (current_gdbarch, func_addr);
4015 return func_addr <= pc && pc < prologue_end;
4018 /* We have line number info, and it looks good. */
4019 return func_addr <= pc && pc < sal.end;
4022 /* Given PC at the function's start address, attempt to find the
4023 prologue end using SAL information. Return zero if the skip fails.
4025 A non-optimized prologue traditionally has one SAL for the function
4026 and a second for the function body. A single line function has
4027 them both pointing at the same line.
4029 An optimized prologue is similar but the prologue may contain
4030 instructions (SALs) from the instruction body. Need to skip those
4031 while not getting into the function body.
4033 The functions end point and an increasing SAL line are used as
4034 indicators of the prologue's endpoint.
4036 This code is based on the function refine_prologue_limit (versions
4037 found in both ia64 and ppc). */
4040 skip_prologue_using_sal (CORE_ADDR func_addr)
4042 struct symtab_and_line prologue_sal;
4046 /* Get an initial range for the function. */
4047 find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc);
4048 start_pc += gdbarch_deprecated_function_start_offset (current_gdbarch);
4050 prologue_sal = find_pc_line (start_pc, 0);
4051 if (prologue_sal.line != 0)
4053 /* If there is only one sal that covers the entire function,
4054 then it is probably a single line function, like
4056 if (prologue_sal.end >= end_pc)
4058 while (prologue_sal.end < end_pc)
4060 struct symtab_and_line sal;
4062 sal = find_pc_line (prologue_sal.end, 0);
4065 /* Assume that a consecutive SAL for the same (or larger)
4066 line mark the prologue -> body transition. */
4067 if (sal.line >= prologue_sal.line)
4069 /* The case in which compiler's optimizer/scheduler has
4070 moved instructions into the prologue. We look ahead in
4071 the function looking for address ranges whose
4072 corresponding line number is less the first one that we
4073 found for the function. This is more conservative then
4074 refine_prologue_limit which scans a large number of SALs
4075 looking for any in the prologue */
4079 return prologue_sal.end;
4082 struct symtabs_and_lines
4083 decode_line_spec (char *string, int funfirstline)
4085 struct symtabs_and_lines sals;
4086 struct symtab_and_line cursal;
4089 error (_("Empty line specification."));
4091 /* We use whatever is set as the current source line. We do not try
4092 and get a default or it will recursively call us! */
4093 cursal = get_current_source_symtab_and_line ();
4095 sals = decode_line_1 (&string, funfirstline,
4096 cursal.symtab, cursal.line,
4097 (char ***) NULL, NULL);
4100 error (_("Junk at end of line specification: %s"), string);
4105 static char *name_of_main;
4108 set_main_name (const char *name)
4110 if (name_of_main != NULL)
4112 xfree (name_of_main);
4113 name_of_main = NULL;
4117 name_of_main = xstrdup (name);
4121 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4125 find_main_name (void)
4127 char *new_main_name;
4129 /* Try to see if the main procedure is in Ada. */
4130 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4131 be to add a new method in the language vector, and call this
4132 method for each language until one of them returns a non-empty
4133 name. This would allow us to remove this hard-coded call to
4134 an Ada function. It is not clear that this is a better approach
4135 at this point, because all methods need to be written in a way
4136 such that false positives never be returned. For instance, it is
4137 important that a method does not return a wrong name for the main
4138 procedure if the main procedure is actually written in a different
4139 language. It is easy to guaranty this with Ada, since we use a
4140 special symbol generated only when the main in Ada to find the name
4141 of the main procedure. It is difficult however to see how this can
4142 be guarantied for languages such as C, for instance. This suggests
4143 that order of call for these methods becomes important, which means
4144 a more complicated approach. */
4145 new_main_name = ada_main_name ();
4146 if (new_main_name != NULL)
4148 set_main_name (new_main_name);
4152 /* The languages above didn't identify the name of the main procedure.
4153 Fallback to "main". */
4154 set_main_name ("main");
4160 if (name_of_main == NULL)
4163 return name_of_main;
4166 /* Handle ``executable_changed'' events for the symtab module. */
4169 symtab_observer_executable_changed (void *unused)
4171 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4172 set_main_name (NULL);
4176 _initialize_symtab (void)
4178 add_info ("variables", variables_info, _("\
4179 All global and static variable names, or those matching REGEXP."));
4181 add_com ("whereis", class_info, variables_info, _("\
4182 All global and static variable names, or those matching REGEXP."));
4184 add_info ("functions", functions_info,
4185 _("All function names, or those matching REGEXP."));
4188 /* FIXME: This command has at least the following problems:
4189 1. It prints builtin types (in a very strange and confusing fashion).
4190 2. It doesn't print right, e.g. with
4191 typedef struct foo *FOO
4192 type_print prints "FOO" when we want to make it (in this situation)
4193 print "struct foo *".
4194 I also think "ptype" or "whatis" is more likely to be useful (but if
4195 there is much disagreement "info types" can be fixed). */
4196 add_info ("types", types_info,
4197 _("All type names, or those matching REGEXP."));
4199 add_info ("sources", sources_info,
4200 _("Source files in the program."));
4202 add_com ("rbreak", class_breakpoint, rbreak_command,
4203 _("Set a breakpoint for all functions matching REGEXP."));
4207 add_com ("lf", class_info, sources_info,
4208 _("Source files in the program"));
4209 add_com ("lg", class_info, variables_info, _("\
4210 All global and static variable names, or those matching REGEXP."));
4213 /* Initialize the one built-in type that isn't language dependent... */
4214 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4215 "<unknown type>", (struct objfile *) NULL);
4217 observer_attach_executable_changed (symtab_observer_executable_changed);