1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
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 2 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, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
42 #include "filenames.h" /* for FILENAME_CMP */
46 #include "gdb_obstack.h"
49 #include <sys/types.h>
51 #include "gdb_string.h"
56 /* Prototypes for local functions */
58 static void completion_list_add_name (char *, char *, int, char *, char *);
60 static void rbreak_command (char *, int);
62 static void types_info (char *, int);
64 static void functions_info (char *, int);
66 static void variables_info (char *, int);
68 static void sources_info (char *, int);
70 static void output_source_filename (char *, int *);
72 static int find_line_common (struct linetable *, int, int *);
74 /* This one is used by linespec.c */
76 char *operator_chars (char *p, char **end);
78 static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
82 static struct symbol *lookup_symbol_aux (const char *name,
83 const char *mangled_name,
84 const struct block *block,
85 const namespace_enum namespace,
86 int *is_a_field_of_this,
87 struct symtab **symtab);
90 struct symbol *lookup_symbol_aux_local (const char *name,
91 const char *mangled_name,
92 const struct block *block,
93 const namespace_enum namespace,
94 struct symtab **symtab,
95 const struct block **static_block);
98 struct symbol *lookup_symbol_aux_block (const char *name,
99 const char *mangled_name,
100 const struct block *block,
101 const namespace_enum namespace,
102 struct symtab **symtab);
105 struct symbol *lookup_symbol_aux_symtabs (int block_index,
107 const char *mangled_name,
108 const namespace_enum namespace,
109 struct symtab **symtab);
112 struct symbol *lookup_symbol_aux_psymtabs (int block_index,
114 const char *mangled_name,
115 const namespace_enum namespace,
116 struct symtab **symtab);
119 struct symbol *lookup_symbol_aux_minsyms (const char *name,
120 const char *mangled_name,
121 const namespace_enum namespace,
122 int *is_a_field_of_this,
123 struct symtab **symtab);
125 static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr);
127 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
128 /* Signals the presence of objects compiled by HP compilers */
129 int hp_som_som_object_present = 0;
131 static void fixup_section (struct general_symbol_info *, struct objfile *);
133 static int file_matches (char *, char **, int);
135 static void print_symbol_info (namespace_enum,
136 struct symtab *, struct symbol *, int, char *);
138 static void print_msymbol_info (struct minimal_symbol *);
140 static void symtab_symbol_info (char *, namespace_enum, int);
142 static void overload_list_add_symbol (struct symbol *sym, char *oload_name);
144 void _initialize_symtab (void);
148 /* The single non-language-specific builtin type */
149 struct type *builtin_type_error;
151 /* Block in which the most recently searched-for symbol was found.
152 Might be better to make this a parameter to lookup_symbol and
155 const struct block *block_found;
157 /* Check for a symtab of a specific name; first in symtabs, then in
158 psymtabs. *If* there is no '/' in the name, a match after a '/'
159 in the symtab filename will also work. */
162 lookup_symtab (const char *name)
164 register struct symtab *s;
165 register struct partial_symtab *ps;
166 register struct objfile *objfile;
167 char *real_path = NULL;
168 char *full_path = NULL;
170 /* Here we are interested in canonicalizing an absolute path, not
171 absolutizing a relative path. */
172 if (IS_ABSOLUTE_PATH (name))
174 full_path = xfullpath (name);
175 make_cleanup (xfree, full_path);
176 real_path = gdb_realpath (name);
177 make_cleanup (xfree, real_path);
182 /* First, search for an exact match */
184 ALL_SYMTABS (objfile, s)
186 if (FILENAME_CMP (name, s->filename) == 0)
191 /* If the user gave us an absolute path, try to find the file in
192 this symtab and use its absolute path. */
194 if (full_path != NULL)
196 const char *fp = symtab_to_filename (s);
197 if (FILENAME_CMP (full_path, fp) == 0)
203 if (real_path != NULL)
205 char *rp = gdb_realpath (symtab_to_filename (s));
206 make_cleanup (xfree, rp);
207 if (FILENAME_CMP (real_path, rp) == 0)
214 /* Now, search for a matching tail (only if name doesn't have any dirs) */
216 if (lbasename (name) == name)
217 ALL_SYMTABS (objfile, s)
219 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
223 /* Same search rules as above apply here, but now we look thru the
226 ps = lookup_partial_symtab (name);
231 error ("Internal: readin %s pst for `%s' found when no symtab found.",
234 s = PSYMTAB_TO_SYMTAB (ps);
239 /* At this point, we have located the psymtab for this file, but
240 the conversion to a symtab has failed. This usually happens
241 when we are looking up an include file. In this case,
242 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
243 been created. So, we need to run through the symtabs again in
244 order to find the file.
245 XXX - This is a crock, and should be fixed inside of the the
246 symbol parsing routines. */
250 /* Lookup the partial symbol table of a source file named NAME.
251 *If* there is no '/' in the name, a match after a '/'
252 in the psymtab filename will also work. */
254 struct partial_symtab *
255 lookup_partial_symtab (const char *name)
257 register struct partial_symtab *pst;
258 register struct objfile *objfile;
259 char *full_path = NULL;
260 char *real_path = NULL;
262 /* Here we are interested in canonicalizing an absolute path, not
263 absolutizing a relative path. */
264 if (IS_ABSOLUTE_PATH (name))
266 full_path = xfullpath (name);
267 make_cleanup (xfree, full_path);
268 real_path = gdb_realpath (name);
269 make_cleanup (xfree, real_path);
272 ALL_PSYMTABS (objfile, pst)
274 if (FILENAME_CMP (name, pst->filename) == 0)
279 /* If the user gave us an absolute path, try to find the file in
280 this symtab and use its absolute path. */
281 if (full_path != NULL)
283 if (pst->fullname == NULL)
284 source_full_path_of (pst->filename, &pst->fullname);
285 if (pst->fullname != NULL
286 && FILENAME_CMP (full_path, pst->fullname) == 0)
292 if (real_path != NULL)
295 if (pst->fullname == NULL)
296 source_full_path_of (pst->filename, &pst->fullname);
297 if (pst->fullname != NULL)
299 rp = gdb_realpath (pst->fullname);
300 make_cleanup (xfree, rp);
302 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
309 /* Now, search for a matching tail (only if name doesn't have any dirs) */
311 if (lbasename (name) == name)
312 ALL_PSYMTABS (objfile, pst)
314 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
321 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
322 full method name, which consist of the class name (from T), the unadorned
323 method name from METHOD_ID, and the signature for the specific overload,
324 specified by SIGNATURE_ID. Note that this function is g++ specific. */
327 gdb_mangle_name (struct type *type, int method_id, int signature_id)
329 int mangled_name_len;
331 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
332 struct fn_field *method = &f[signature_id];
333 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
334 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
335 char *newname = type_name_no_tag (type);
337 /* Does the form of physname indicate that it is the full mangled name
338 of a constructor (not just the args)? */
339 int is_full_physname_constructor;
342 int is_destructor = is_destructor_name (physname);
343 /* Need a new type prefix. */
344 char *const_prefix = method->is_const ? "C" : "";
345 char *volatile_prefix = method->is_volatile ? "V" : "";
347 int len = (newname == NULL ? 0 : strlen (newname));
349 /* Nothing to do if physname already contains a fully mangled v3 abi name
350 or an operator name. */
351 if ((physname[0] == '_' && physname[1] == 'Z')
352 || is_operator_name (field_name))
353 return xstrdup (physname);
355 is_full_physname_constructor = is_constructor_name (physname);
358 is_full_physname_constructor || (newname && STREQ (field_name, newname));
361 is_destructor = (strncmp (physname, "__dt", 4) == 0);
363 if (is_destructor || is_full_physname_constructor)
365 mangled_name = (char *) xmalloc (strlen (physname) + 1);
366 strcpy (mangled_name, physname);
372 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
374 else if (physname[0] == 't' || physname[0] == 'Q')
376 /* The physname for template and qualified methods already includes
378 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
384 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
386 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
387 + strlen (buf) + len + strlen (physname) + 1);
390 mangled_name = (char *) xmalloc (mangled_name_len);
392 mangled_name[0] = '\0';
394 strcpy (mangled_name, field_name);
396 strcat (mangled_name, buf);
397 /* If the class doesn't have a name, i.e. newname NULL, then we just
398 mangle it using 0 for the length of the class. Thus it gets mangled
399 as something starting with `::' rather than `classname::'. */
401 strcat (mangled_name, newname);
403 strcat (mangled_name, physname);
404 return (mangled_name);
408 /* Initialize the language dependent portion of a symbol
409 depending upon the language for the symbol. */
411 symbol_init_language_specific (struct general_symbol_info *gsymbol,
412 enum language language)
414 gsymbol->language = language;
415 if (gsymbol->language == language_cplus
416 || gsymbol->language == language_java
417 || gsymbol->language == language_objc)
419 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
423 memset (&gsymbol->language_specific, 0,
424 sizeof (gsymbol->language_specific));
428 /* Functions to initialize a symbol's mangled name. */
430 /* Create the hash table used for demangled names. Each hash entry is
431 a pair of strings; one for the mangled name and one for the demangled
432 name. The entry is hashed via just the mangled name. */
435 create_demangled_names_hash (struct objfile *objfile)
437 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
438 The hash table code will round this up to the next prime number.
439 Choosing a much larger table size wastes memory, and saves only about
440 1% in symbol reading. */
442 objfile->demangled_names_hash = htab_create_alloc_ex
443 (256, htab_hash_string, (int (*) (const void *, const void *)) streq,
444 NULL, objfile->md, xmcalloc, xmfree);
447 /* Try to determine the demangled name for a symbol, based on the
448 language of that symbol. If the language is set to language_auto,
449 it will attempt to find any demangling algorithm that works and
450 then set the language appropriately. The returned name is allocated
451 by the demangler and should be xfree'd. */
454 symbol_find_demangled_name (struct general_symbol_info *gsymbol,
457 char *demangled = NULL;
459 if (gsymbol->language == language_unknown)
460 gsymbol->language = language_auto;
461 if (gsymbol->language == language_cplus
462 || gsymbol->language == language_auto)
465 cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
466 if (demangled != NULL)
468 gsymbol->language = language_cplus;
472 if (gsymbol->language == language_java)
475 cplus_demangle (mangled,
476 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
477 if (demangled != NULL)
479 gsymbol->language = language_java;
486 /* Set both the mangled and demangled (if any) names for GSYMBOL based on
487 NAME and LEN. The hash table corresponding to OBJFILE is used, and the
488 memory comes from that objfile's symbol_obstack. NAME is copied, so the
489 pointer can be discarded after calling this function. */
492 symbol_set_names (struct general_symbol_info *gsymbol,
493 const char *name, int len, struct objfile *objfile)
498 if (objfile->demangled_names_hash == NULL)
499 create_demangled_names_hash (objfile);
501 /* The stabs reader generally provides names that are not NULL-terminated;
502 most of the other readers don't do this, so we can just use the given
506 char *alloc_name = alloca (len + 1);
507 memcpy (alloc_name, name, len);
509 tmpname = alloc_name;
514 slot = (char **) htab_find_slot (objfile->demangled_names_hash, tmpname, INSERT);
516 /* If this name is not in the hash table, add it. */
519 char *demangled_name = symbol_find_demangled_name (gsymbol, tmpname);
520 int demangled_len = demangled_name ? strlen (demangled_name) : 0;
522 /* If there is a demangled name, place it right after the mangled name.
523 Otherwise, just place a second zero byte after the end of the mangled
525 *slot = obstack_alloc (&objfile->symbol_obstack,
526 len + demangled_len + 2);
527 memcpy (*slot, tmpname, len + 1);
530 memcpy (*slot + len + 1, demangled_name, demangled_len + 1);
531 xfree (demangled_name);
534 (*slot)[len + 1] = 0;
537 gsymbol->name = *slot;
538 if ((*slot)[len + 1])
539 gsymbol->language_specific.cplus_specific.demangled_name
542 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
545 /* Initialize the demangled name of GSYMBOL if possible. Any required space
546 to store the name is obtained from the specified obstack. The function
547 symbol_set_names, above, should be used instead where possible for more
548 efficient memory usage. */
551 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
552 struct obstack *obstack)
554 char *mangled = gsymbol->name;
555 char *demangled = NULL;
557 demangled = symbol_find_demangled_name (gsymbol, mangled);
558 if (gsymbol->language == language_cplus
559 || gsymbol->language == language_java)
563 gsymbol->language_specific.cplus_specific.demangled_name
564 = obsavestring (demangled, strlen (demangled), obstack);
568 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
572 /* Unknown language; just clean up quietly. */
578 /* Return the source code name of a symbol. In languages where
579 demangling is necessary, this is the demangled name. */
582 symbol_natural_name (const struct general_symbol_info *gsymbol)
584 if ((gsymbol->language == language_cplus
585 || gsymbol->language == language_java
586 || gsymbol->language == language_objc)
587 && (gsymbol->language_specific.cplus_specific.demangled_name != NULL))
589 return gsymbol->language_specific.cplus_specific.demangled_name;
593 return gsymbol->name;
597 /* Return the demangled name for a symbol based on the language for
598 that symbol. If no demangled name exists, return NULL. */
600 symbol_demangled_name (struct general_symbol_info *gsymbol)
602 if (gsymbol->language == language_cplus
603 || gsymbol->language == language_java
604 || gsymbol->language == language_objc)
605 return gsymbol->language_specific.cplus_specific.demangled_name;
611 /* Initialize the structure fields to zero values. */
613 init_sal (struct symtab_and_line *sal)
624 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
626 struct partial_symtab *
627 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
629 register struct partial_symtab *pst;
630 register struct objfile *objfile;
631 struct minimal_symbol *msymbol;
633 /* If we know that this is not a text address, return failure. This is
634 necessary because we loop based on texthigh and textlow, which do
635 not include the data ranges. */
636 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
638 && (msymbol->type == mst_data
639 || msymbol->type == mst_bss
640 || msymbol->type == mst_abs
641 || msymbol->type == mst_file_data
642 || msymbol->type == mst_file_bss))
645 ALL_PSYMTABS (objfile, pst)
647 if (pc >= pst->textlow && pc < pst->texthigh)
649 struct partial_symtab *tpst;
651 /* An objfile that has its functions reordered might have
652 many partial symbol tables containing the PC, but
653 we want the partial symbol table that contains the
654 function containing the PC. */
655 if (!(objfile->flags & OBJF_REORDERED) &&
656 section == 0) /* can't validate section this way */
662 for (tpst = pst; tpst != NULL; tpst = tpst->next)
664 if (pc >= tpst->textlow && pc < tpst->texthigh)
666 struct partial_symbol *p;
668 p = find_pc_sect_psymbol (tpst, pc, section);
670 && SYMBOL_VALUE_ADDRESS (p)
671 == SYMBOL_VALUE_ADDRESS (msymbol))
681 /* Find which partial symtab contains PC. Return 0 if none.
682 Backward compatibility, no section */
684 struct partial_symtab *
685 find_pc_psymtab (CORE_ADDR pc)
687 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
690 /* Find which partial symbol within a psymtab matches PC and SECTION.
691 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
693 struct partial_symbol *
694 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
697 struct partial_symbol *best = NULL, *p, **pp;
701 psymtab = find_pc_sect_psymtab (pc, section);
705 /* Cope with programs that start at address 0 */
706 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
708 /* Search the global symbols as well as the static symbols, so that
709 find_pc_partial_function doesn't use a minimal symbol and thus
710 cache a bad endaddr. */
711 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
712 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
713 < psymtab->n_global_syms);
717 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
718 && SYMBOL_CLASS (p) == LOC_BLOCK
719 && pc >= SYMBOL_VALUE_ADDRESS (p)
720 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
721 || (psymtab->textlow == 0
722 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
724 if (section) /* match on a specific section */
726 fixup_psymbol_section (p, psymtab->objfile);
727 if (SYMBOL_BFD_SECTION (p) != section)
730 best_pc = SYMBOL_VALUE_ADDRESS (p);
735 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
736 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
737 < psymtab->n_static_syms);
741 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
742 && SYMBOL_CLASS (p) == LOC_BLOCK
743 && pc >= SYMBOL_VALUE_ADDRESS (p)
744 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
745 || (psymtab->textlow == 0
746 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
748 if (section) /* match on a specific section */
750 fixup_psymbol_section (p, psymtab->objfile);
751 if (SYMBOL_BFD_SECTION (p) != section)
754 best_pc = SYMBOL_VALUE_ADDRESS (p);
762 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
763 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
765 struct partial_symbol *
766 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
768 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
771 /* Debug symbols usually don't have section information. We need to dig that
772 out of the minimal symbols and stash that in the debug symbol. */
775 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
777 struct minimal_symbol *msym;
778 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
782 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
783 ginfo->section = SYMBOL_SECTION (msym);
788 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
793 if (SYMBOL_BFD_SECTION (sym))
796 fixup_section (&sym->ginfo, objfile);
801 struct partial_symbol *
802 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
807 if (SYMBOL_BFD_SECTION (psym))
810 fixup_section (&psym->ginfo, objfile);
815 /* Find the definition for a specified symbol name NAME
816 in namespace NAMESPACE, visible from lexical block BLOCK.
817 Returns the struct symbol pointer, or zero if no symbol is found.
818 If SYMTAB is non-NULL, store the symbol table in which the
819 symbol was found there, or NULL if not found.
820 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
821 NAME is a field of the current implied argument `this'. If so set
822 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
823 BLOCK_FOUND is set to the block in which NAME is found (in the case of
824 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
826 /* This function has a bunch of loops in it and it would seem to be
827 attractive to put in some QUIT's (though I'm not really sure
828 whether it can run long enough to be really important). But there
829 are a few calls for which it would appear to be bad news to quit
830 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
831 that there is C++ code below which can error(), but that probably
832 doesn't affect these calls since they are looking for a known
833 variable and thus can probably assume it will never hit the C++
837 lookup_symbol (const char *name, const struct block *block,
838 const namespace_enum namespace, int *is_a_field_of_this,
839 struct symtab **symtab)
841 char *demangled_name = NULL;
842 const char *modified_name = NULL;
843 const char *mangled_name = NULL;
844 int needtofreename = 0;
845 struct symbol *returnval;
847 modified_name = name;
849 /* If we are using C++ language, demangle the name before doing a lookup, so
850 we can always binary search. */
851 if (current_language->la_language == language_cplus)
853 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
857 modified_name = demangled_name;
862 if (case_sensitivity == case_sensitive_off)
868 copy = (char *) alloca (len + 1);
869 for (i= 0; i < len; i++)
870 copy[i] = tolower (name[i]);
872 modified_name = copy;
875 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
876 namespace, is_a_field_of_this, symtab);
878 xfree (demangled_name);
883 static struct symbol *
884 lookup_symbol_aux (const char *name, const char *mangled_name,
885 const struct block *block, const namespace_enum namespace,
886 int *is_a_field_of_this, struct symtab **symtab)
889 const struct block *static_block;
891 /* Search specified block and its superiors. Don't search
892 STATIC_BLOCK or GLOBAL_BLOCK. */
894 sym = lookup_symbol_aux_local (name, mangled_name, block, namespace,
895 symtab, &static_block);
900 /* NOTE: carlton/2002-11-05: At the time that this code was
901 #ifdeffed out, the value of 'block' was always NULL at this
902 point, hence the bemused comments below. */
904 /* FIXME: this code is never executed--block is always NULL at this
905 point. What is it trying to do, anyway? We already should have
906 checked the STATIC_BLOCK above (it is the superblock of top-level
907 blocks). Why is VAR_NAMESPACE special-cased? */
908 /* Don't need to mess with the psymtabs; if we have a block,
909 that file is read in. If we don't, then we deal later with
910 all the psymtab stuff that needs checking. */
911 /* Note (RT): The following never-executed code looks unnecessary to me also.
912 * If we change the code to use the original (passed-in)
913 * value of 'block', we could cause it to execute, but then what
914 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
915 * 'block' was already searched by the above code. And the STATIC_BLOCK's
916 * of *other* symtabs (those files not containing 'block' lexically)
917 * should not contain 'block' address-wise. So we wouldn't expect this
918 * code to find any 'sym''s that were not found above. I vote for
919 * deleting the following paragraph of code.
921 if (namespace == VAR_NAMESPACE && block != NULL)
924 /* Find the right symtab. */
925 ALL_SYMTABS (objfile, s)
927 bv = BLOCKVECTOR (s);
928 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
929 if (BLOCK_START (b) <= BLOCK_START (block)
930 && BLOCK_END (b) > BLOCK_START (block))
932 sym = lookup_block_symbol (b, name, mangled_name, VAR_NAMESPACE);
938 return fixup_symbol_section (sym, objfile);
945 /* C++: If requested to do so by the caller,
946 check to see if NAME is a field of `this'. */
947 if (is_a_field_of_this)
949 struct value *v = value_of_this (0);
951 *is_a_field_of_this = 0;
952 if (v && check_field (v, name))
954 *is_a_field_of_this = 1;
961 /* If there's a static block to search, search it next. */
963 /* NOTE: carlton/2002-12-05: There is a question as to whether or
964 not it would be appropriate to search the current global block
965 here as well. (That's what this code used to do before the
966 is_a_field_of_this check was moved up.) On the one hand, it's
967 redundant with the lookup_symbol_aux_symtabs search that happens
968 next. On the other hand, if decode_line_1 is passed an argument
969 like filename:var, then the user presumably wants 'var' to be
970 searched for in filename. On the third hand, there shouldn't be
971 multiple global variables all of which are named 'var', and it's
972 not like decode_line_1 has ever restricted its search to only
973 global variables in a single filename. All in all, only
974 searching the static block here seems best: it's correct and it's
977 /* NOTE: carlton/2002-12-05: There's also a possible performance
978 issue here: if you usually search for global symbols in the
979 current file, then it would be slightly better to search the
980 current global block before searching all the symtabs. But there
981 are other factors that have a much greater effect on performance
982 than that one, so I don't think we should worry about that for
985 if (static_block != NULL)
987 sym = lookup_symbol_aux_block (name, mangled_name, static_block,
993 /* Now search all global blocks. Do the symtab's first, then
994 check the psymtab's. If a psymtab indicates the existence
995 of the desired name as a global, then do psymtab-to-symtab
996 conversion on the fly and return the found symbol. */
998 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, mangled_name,
1005 /* Check for the possibility of the symbol being a function or
1006 a mangled variable that is stored in one of the minimal symbol tables.
1007 Eventually, all global symbols might be resolved in this way. */
1009 sym = lookup_symbol_aux_minsyms (name, mangled_name,
1010 namespace, is_a_field_of_this,
1018 sym = lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, mangled_name,
1023 /* Now search all static file-level symbols. Not strictly correct,
1024 but more useful than an error. Do the symtabs first, then check
1025 the psymtabs. If a psymtab indicates the existence of the
1026 desired name as a file-level static, then do psymtab-to-symtab
1027 conversion on the fly and return the found symbol. */
1029 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, mangled_name,
1034 sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, mangled_name,
1041 /* Check for the possibility of the symbol being a function or
1042 a global variable that is stored in one of the minimal symbol tables.
1043 The "minimal symbol table" is built from linker-supplied info.
1045 RT: I moved this check to last, after the complete search of
1046 the global (p)symtab's and static (p)symtab's. For HP-generated
1047 symbol tables, this check was causing a premature exit from
1048 lookup_symbol with NULL return, and thus messing up symbol lookups
1049 of things like "c::f". It seems to me a check of the minimal
1050 symbol table ought to be a last resort in any case. I'm vaguely
1051 worried about the comment below which talks about FORTRAN routines "foo_"
1052 though... is it saying we need to do the "minsym" check before
1053 the static check in this case?
1057 sym = lookup_symbol_aux_minsyms (name, mangled_name,
1058 namespace, is_a_field_of_this,
1071 /* Check to see if the symbol is defined in BLOCK or its superiors.
1072 Don't search STATIC_BLOCK or GLOBAL_BLOCK. If we don't find a
1073 match, store the address of STATIC_BLOCK in static_block. */
1075 static struct symbol *
1076 lookup_symbol_aux_local (const char *name, const char *mangled_name,
1077 const struct block *block,
1078 const namespace_enum namespace,
1079 struct symtab **symtab,
1080 const struct block **static_block)
1084 /* Check if either no block is specified or it's a global block. */
1086 if (block == NULL || BLOCK_SUPERBLOCK (block) == NULL)
1088 *static_block = NULL;
1092 while (BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) != NULL)
1094 sym = lookup_symbol_aux_block (name, mangled_name, block, namespace,
1098 block = BLOCK_SUPERBLOCK (block);
1101 /* We've reached the static block. */
1103 *static_block = block;
1107 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1108 symbol, and set block_found appropriately. */
1110 static struct symbol *
1111 lookup_symbol_aux_block (const char *name, const char *mangled_name,
1112 const struct block *block,
1113 const namespace_enum namespace,
1114 struct symtab **symtab)
1117 struct objfile *objfile = NULL;
1118 struct blockvector *bv;
1120 struct symtab *s = NULL;
1122 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1125 block_found = block;
1128 /* Search the list of symtabs for one which contains the
1129 address of the start of this block. */
1130 ALL_SYMTABS (objfile, s)
1132 bv = BLOCKVECTOR (s);
1133 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1134 if (BLOCK_START (b) <= BLOCK_START (block)
1135 && BLOCK_END (b) > BLOCK_START (block))
1142 return fixup_symbol_section (sym, objfile);
1148 /* Check to see if the symbol is defined in one of the symtabs.
1149 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1150 depending on whether or not we want to search global symbols or
1153 static struct symbol *
1154 lookup_symbol_aux_symtabs (int block_index,
1155 const char *name, const char *mangled_name,
1156 const namespace_enum namespace,
1157 struct symtab **symtab)
1160 struct objfile *objfile;
1161 struct blockvector *bv;
1162 const struct block *block;
1165 ALL_SYMTABS (objfile, s)
1167 bv = BLOCKVECTOR (s);
1168 block = BLOCKVECTOR_BLOCK (bv, block_index);
1169 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1172 block_found = block;
1175 return fixup_symbol_section (sym, objfile);
1182 /* Check to see if the symbol is defined in one of the partial
1183 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1184 STATIC_BLOCK, depending on whether or not we want to search global
1185 symbols or static symbols. */
1187 static struct symbol *
1188 lookup_symbol_aux_psymtabs (int block_index, const char *name,
1189 const char *mangled_name,
1190 const namespace_enum namespace,
1191 struct symtab **symtab)
1194 struct objfile *objfile;
1195 struct blockvector *bv;
1196 const struct block *block;
1197 struct partial_symtab *ps;
1199 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
1201 ALL_PSYMTABS (objfile, ps)
1204 && lookup_partial_symbol (ps, name, psymtab_index, namespace))
1206 s = PSYMTAB_TO_SYMTAB (ps);
1207 bv = BLOCKVECTOR (s);
1208 block = BLOCKVECTOR_BLOCK (bv, block_index);
1209 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1212 /* This shouldn't be necessary, but as a last resort try
1213 looking in the statics even though the psymtab claimed
1214 the symbol was global, or vice-versa. It's possible
1215 that the psymtab gets it wrong in some cases. */
1217 /* FIXME: carlton/2002-09-30: Should we really do that?
1218 If that happens, isn't it likely to be a GDB error, in
1219 which case we should fix the GDB error rather than
1220 silently dealing with it here? So I'd vote for
1221 removing the check for the symbol in the other
1223 block = BLOCKVECTOR_BLOCK (bv,
1224 block_index == GLOBAL_BLOCK ?
1225 STATIC_BLOCK : GLOBAL_BLOCK);
1226 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1228 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>).",
1229 block_index == GLOBAL_BLOCK ? "global" : "static",
1230 name, ps->filename, name, name);
1234 return fixup_symbol_section (sym, objfile);
1241 /* Check for the possibility of the symbol being a function or a
1242 mangled variable that is stored in one of the minimal symbol
1243 tables. Eventually, all global symbols might be resolved in this
1246 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1247 lookup_symbol_aux, and what are now 'return' statements within
1248 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1249 sym was NULL. As far as I can tell, this was basically accidental;
1250 it didn't happen every time that msymbol was non-NULL, but only if
1251 some additional conditions held as well, and it caused problems
1252 with HP-generated symbol tables. */
1254 static struct symbol *
1255 lookup_symbol_aux_minsyms (const char *name,
1256 const char *mangled_name,
1257 const namespace_enum namespace,
1258 int *is_a_field_of_this,
1259 struct symtab **symtab)
1262 struct blockvector *bv;
1263 const struct block *block;
1264 struct minimal_symbol *msymbol;
1267 if (namespace == VAR_NAMESPACE)
1269 msymbol = lookup_minimal_symbol (name, NULL, NULL);
1271 if (msymbol != NULL)
1273 /* OK, we found a minimal symbol in spite of not finding any
1274 symbol. There are various possible explanations for
1275 this. One possibility is the symbol exists in code not
1276 compiled -g. Another possibility is that the 'psymtab'
1277 isn't doing its job. A third possibility, related to #2,
1278 is that we were confused by name-mangling. For instance,
1279 maybe the psymtab isn't doing its job because it only
1280 know about demangled names, but we were given a mangled
1283 /* We first use the address in the msymbol to try to locate
1284 the appropriate symtab. Note that find_pc_sect_symtab()
1285 has a side-effect of doing psymtab-to-symtab expansion,
1286 for the found symtab. */
1287 s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
1288 SYMBOL_BFD_SECTION (msymbol));
1291 /* This is a function which has a symtab for its address. */
1292 bv = BLOCKVECTOR (s);
1293 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1295 /* This call used to pass `DEPRECATED_SYMBOL_NAME (msymbol)' as the
1296 `name' argument to lookup_block_symbol. But the name
1297 of a minimal symbol is always mangled, so that seems
1298 to be clearly the wrong thing to pass as the
1301 lookup_block_symbol (block, name, mangled_name, namespace);
1302 /* We kept static functions in minimal symbol table as well as
1303 in static scope. We want to find them in the symbol table. */
1306 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1307 sym = lookup_block_symbol (block, name,
1308 mangled_name, namespace);
1311 /* NOTE: carlton/2002-12-04: The following comment was
1312 taken from a time when two versions of this function
1313 were part of the body of lookup_symbol_aux: this
1314 comment was taken from the version of the function
1315 that was #ifdef HPUXHPPA, and the comment was right
1316 before the 'return NULL' part of lookup_symbol_aux.
1317 (Hence the "Fall through and return 0" comment.)
1318 Elena did some digging into the situation for
1319 Fortran, and she reports:
1321 "I asked around (thanks to Jeff Knaggs), and I think
1322 the story for Fortran goes like this:
1324 "Apparently, in older Fortrans, '_' was not part of
1325 the user namespace. g77 attached a final '_' to
1326 procedure names as the exported symbols for linkage
1327 (foo_) , but the symbols went in the debug info just
1328 like 'foo'. The rationale behind this is not
1329 completely clear, and maybe it was done to other
1330 symbols as well, not just procedures." */
1332 /* If we get here with sym == 0, the symbol was
1333 found in the minimal symbol table
1334 but not in the symtab.
1335 Fall through and return 0 to use the msymbol
1336 definition of "foo_".
1337 (Note that outer code generally follows up a call
1338 to this routine with a call to lookup_minimal_symbol(),
1339 so a 0 return means we'll just flow into that other routine).
1341 This happens for Fortran "foo_" symbols,
1342 which are "foo" in the symtab.
1344 This can also happen if "asm" is used to make a
1345 regular symbol but not a debugging symbol, e.g.
1346 asm(".globl _main");
1350 if (symtab != NULL && sym != NULL)
1352 return fixup_symbol_section (sym, s->objfile);
1354 else if (MSYMBOL_TYPE (msymbol) != mst_text
1355 && MSYMBOL_TYPE (msymbol) != mst_file_text
1356 && !STREQ (name, DEPRECATED_SYMBOL_NAME (msymbol)))
1358 /* This is a mangled variable, look it up by its
1360 return lookup_symbol_aux (DEPRECATED_SYMBOL_NAME (msymbol), mangled_name,
1361 NULL, namespace, is_a_field_of_this,
1370 /* Look, in partial_symtab PST, for symbol NAME. Check the global
1371 symbols if GLOBAL, the static symbols if not */
1373 static struct partial_symbol *
1374 lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global,
1375 namespace_enum namespace)
1377 struct partial_symbol *temp;
1378 struct partial_symbol **start, **psym;
1379 struct partial_symbol **top, **real_top, **bottom, **center;
1380 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1381 int do_linear_search = 1;
1388 pst->objfile->global_psymbols.list + pst->globals_offset :
1389 pst->objfile->static_psymbols.list + pst->statics_offset);
1391 if (global) /* This means we can use a binary search. */
1393 do_linear_search = 0;
1395 /* Binary search. This search is guaranteed to end with center
1396 pointing at the earliest partial symbol whose name might be
1397 correct. At that point *all* partial symbols with an
1398 appropriate name will be checked against the correct
1402 top = start + length - 1;
1404 while (top > bottom)
1406 center = bottom + (top - bottom) / 2;
1407 if (!(center < top))
1408 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1409 if (!do_linear_search
1410 && (SYMBOL_LANGUAGE (*center) == language_java))
1412 do_linear_search = 1;
1414 if (strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*center), name) >= 0)
1420 bottom = center + 1;
1423 if (!(top == bottom))
1424 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1426 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1427 we don't have to force a linear search on C++. Probably holds true
1428 for JAVA as well, no way to check.*/
1429 while (top <= real_top && SYMBOL_MATCHES_NAME (*top,name))
1431 if (SYMBOL_NAMESPACE (*top) == namespace)
1439 /* Can't use a binary search or else we found during the binary search that
1440 we should also do a linear search. */
1442 if (do_linear_search)
1444 for (psym = start; psym < start + length; psym++)
1446 if (namespace == SYMBOL_NAMESPACE (*psym))
1448 if (SYMBOL_MATCHES_NAME (*psym, name))
1459 /* Look up a type named NAME in the struct_namespace. The type returned
1460 must not be opaque -- i.e., must have at least one field defined
1462 This code was modelled on lookup_symbol -- the parts not relevant to looking
1463 up types were just left out. In particular it's assumed here that types
1464 are available in struct_namespace and only at file-static or global blocks. */
1468 lookup_transparent_type (const char *name)
1470 register struct symbol *sym;
1471 register struct symtab *s = NULL;
1472 register struct partial_symtab *ps;
1473 struct blockvector *bv;
1474 register struct objfile *objfile;
1475 register struct block *block;
1477 /* Now search all the global symbols. Do the symtab's first, then
1478 check the psymtab's. If a psymtab indicates the existence
1479 of the desired name as a global, then do psymtab-to-symtab
1480 conversion on the fly and return the found symbol. */
1482 ALL_SYMTABS (objfile, s)
1484 bv = BLOCKVECTOR (s);
1485 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1486 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1487 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1489 return SYMBOL_TYPE (sym);
1493 ALL_PSYMTABS (objfile, ps)
1495 if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE))
1497 s = PSYMTAB_TO_SYMTAB (ps);
1498 bv = BLOCKVECTOR (s);
1499 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1500 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1503 /* This shouldn't be necessary, but as a last resort
1504 * try looking in the statics even though the psymtab
1505 * claimed the symbol was global. It's possible that
1506 * the psymtab gets it wrong in some cases.
1508 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1509 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1511 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1512 %s may be an inlined function, or may be a template function\n\
1513 (if a template, try specifying an instantiation: %s<type>).",
1514 name, ps->filename, name, name);
1516 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1517 return SYMBOL_TYPE (sym);
1521 /* Now search the static file-level symbols.
1522 Not strictly correct, but more useful than an error.
1523 Do the symtab's first, then
1524 check the psymtab's. If a psymtab indicates the existence
1525 of the desired name as a file-level static, then do psymtab-to-symtab
1526 conversion on the fly and return the found symbol.
1529 ALL_SYMTABS (objfile, s)
1531 bv = BLOCKVECTOR (s);
1532 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1533 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1534 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1536 return SYMBOL_TYPE (sym);
1540 ALL_PSYMTABS (objfile, ps)
1542 if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE))
1544 s = PSYMTAB_TO_SYMTAB (ps);
1545 bv = BLOCKVECTOR (s);
1546 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1547 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1550 /* This shouldn't be necessary, but as a last resort
1551 * try looking in the globals even though the psymtab
1552 * claimed the symbol was static. It's possible that
1553 * the psymtab gets it wrong in some cases.
1555 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1556 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1558 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1559 %s may be an inlined function, or may be a template function\n\
1560 (if a template, try specifying an instantiation: %s<type>).",
1561 name, ps->filename, name, name);
1563 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1564 return SYMBOL_TYPE (sym);
1567 return (struct type *) 0;
1571 /* Find the psymtab containing main(). */
1572 /* FIXME: What about languages without main() or specially linked
1573 executables that have no main() ? */
1575 struct partial_symtab *
1576 find_main_psymtab (void)
1578 register struct partial_symtab *pst;
1579 register struct objfile *objfile;
1581 ALL_PSYMTABS (objfile, pst)
1583 if (lookup_partial_symbol (pst, main_name (), 1, VAR_NAMESPACE))
1591 /* Search BLOCK for symbol NAME in NAMESPACE.
1593 Note that if NAME is the demangled form of a C++ symbol, we will fail
1594 to find a match during the binary search of the non-encoded names, but
1595 for now we don't worry about the slight inefficiency of looking for
1596 a match we'll never find, since it will go pretty quick. Once the
1597 binary search terminates, we drop through and do a straight linear
1598 search on the symbols. Each symbol which is marked as being a C++
1599 symbol (language_cplus set) has both the encoded and non-encoded names
1602 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1603 particular mangled name.
1607 lookup_block_symbol (register const struct block *block, const char *name,
1608 const char *mangled_name,
1609 const namespace_enum namespace)
1611 register int bot, top, inc;
1612 register struct symbol *sym;
1613 register struct symbol *sym_found = NULL;
1614 register int do_linear_search = 1;
1616 if (BLOCK_HASHTABLE (block))
1618 unsigned int hash_index;
1619 hash_index = msymbol_hash_iw (name);
1620 hash_index = hash_index % BLOCK_BUCKETS (block);
1621 for (sym = BLOCK_BUCKET (block, hash_index); sym; sym = sym->hash_next)
1623 if (SYMBOL_NAMESPACE (sym) == namespace
1625 ? strcmp (DEPRECATED_SYMBOL_NAME (sym), mangled_name) == 0
1626 : SYMBOL_MATCHES_NAME (sym, name)))
1632 /* If the blocks's symbols were sorted, start with a binary search. */
1634 if (BLOCK_SHOULD_SORT (block))
1636 /* Reset the linear search flag so if the binary search fails, we
1637 won't do the linear search once unless we find some reason to
1640 do_linear_search = 0;
1641 top = BLOCK_NSYMS (block);
1644 /* Advance BOT to not far before the first symbol whose name is NAME. */
1648 inc = (top - bot + 1);
1649 /* No need to keep binary searching for the last few bits worth. */
1654 inc = (inc >> 1) + bot;
1655 sym = BLOCK_SYM (block, inc);
1656 if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java))
1658 do_linear_search = 1;
1660 if (SYMBOL_NATURAL_NAME (sym)[0] < name[0])
1664 else if (SYMBOL_NATURAL_NAME (sym)[0] > name[0])
1668 else if (strcmp (SYMBOL_NATURAL_NAME (sym), name) < 0)
1678 /* Now scan forward until we run out of symbols, find one whose
1679 name is greater than NAME, or find one we want. If there is
1680 more than one symbol with the right name and namespace, we
1681 return the first one; I believe it is now impossible for us
1682 to encounter two symbols with the same name and namespace
1683 here, because blocks containing argument symbols are no
1684 longer sorted. The exception is for C++, where multiple functions
1685 (cloned constructors / destructors, in particular) can have
1686 the same demangled name. So if we have a particular
1687 mangled name to match, try to do so. */
1689 top = BLOCK_NSYMS (block);
1692 sym = BLOCK_SYM (block, bot);
1693 if (SYMBOL_NAMESPACE (sym) == namespace
1695 ? strcmp (DEPRECATED_SYMBOL_NAME (sym), mangled_name) == 0
1696 : SYMBOL_MATCHES_NAME (sym, name)))
1700 if (SYMBOL_PRINT_NAME (sym)[0] > name[0])
1708 /* Here if block isn't sorted, or we fail to find a match during the
1709 binary search above. If during the binary search above, we find a
1710 symbol which is a Java symbol, then we have re-enabled the linear
1711 search flag which was reset when starting the binary search.
1713 This loop is equivalent to the loop above, but hacked greatly for speed.
1715 Note that parameter symbols do not always show up last in the
1716 list; this loop makes sure to take anything else other than
1717 parameter symbols first; it only uses parameter symbols as a
1718 last resort. Note that this only takes up extra computation
1721 if (do_linear_search)
1723 top = BLOCK_NSYMS (block);
1727 sym = BLOCK_SYM (block, bot);
1728 if (SYMBOL_NAMESPACE (sym) == namespace
1730 ? strcmp (DEPRECATED_SYMBOL_NAME (sym), mangled_name) == 0
1731 : SYMBOL_MATCHES_NAME (sym, name)))
1733 /* If SYM has aliases, then use any alias that is active
1734 at the current PC. If no alias is active at the current
1735 PC, then use the main symbol.
1737 ?!? Is checking the current pc correct? Is this routine
1738 ever called to look up a symbol from another context?
1740 FIXME: No, it's not correct. If someone sets a
1741 conditional breakpoint at an address, then the
1742 breakpoint's `struct expression' should refer to the
1743 `struct symbol' appropriate for the breakpoint's
1744 address, which may not be the PC.
1746 Even if it were never called from another context,
1747 it's totally bizarre for lookup_symbol's behavior to
1748 depend on the value of the inferior's current PC. We
1749 should pass in the appropriate PC as well as the
1750 block. The interface to lookup_symbol should change
1751 to require the caller to provide a PC. */
1753 if (SYMBOL_ALIASES (sym))
1754 sym = find_active_alias (sym, read_pc ());
1757 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1758 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1759 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1760 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1761 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1762 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG &&
1763 SYMBOL_CLASS (sym) != LOC_COMPUTED_ARG)
1771 return (sym_found); /* Will be NULL if not found. */
1774 /* Given a main symbol SYM and ADDR, search through the alias
1775 list to determine if an alias is active at ADDR and return
1778 If no alias is active, then return SYM. */
1780 static struct symbol *
1781 find_active_alias (struct symbol *sym, CORE_ADDR addr)
1783 struct range_list *r;
1784 struct alias_list *aliases;
1786 /* If we have aliases, check them first. */
1787 aliases = SYMBOL_ALIASES (sym);
1791 if (!SYMBOL_RANGES (aliases->sym))
1792 return aliases->sym;
1793 for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
1795 if (r->start <= addr && r->end > addr)
1796 return aliases->sym;
1798 aliases = aliases->next;
1801 /* Nothing found, return the main symbol. */
1806 /* Find the symtab associated with PC and SECTION. Look through the
1807 psymtabs and read in another symtab if necessary. */
1810 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1812 register struct block *b;
1813 struct blockvector *bv;
1814 register struct symtab *s = NULL;
1815 register struct symtab *best_s = NULL;
1816 register struct partial_symtab *ps;
1817 register struct objfile *objfile;
1818 CORE_ADDR distance = 0;
1819 struct minimal_symbol *msymbol;
1821 /* If we know that this is not a text address, return failure. This is
1822 necessary because we loop based on the block's high and low code
1823 addresses, which do not include the data ranges, and because
1824 we call find_pc_sect_psymtab which has a similar restriction based
1825 on the partial_symtab's texthigh and textlow. */
1826 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1828 && (msymbol->type == mst_data
1829 || msymbol->type == mst_bss
1830 || msymbol->type == mst_abs
1831 || msymbol->type == mst_file_data
1832 || msymbol->type == mst_file_bss))
1835 /* Search all symtabs for the one whose file contains our address, and which
1836 is the smallest of all the ones containing the address. This is designed
1837 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1838 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1839 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1841 This happens for native ecoff format, where code from included files
1842 gets its own symtab. The symtab for the included file should have
1843 been read in already via the dependency mechanism.
1844 It might be swifter to create several symtabs with the same name
1845 like xcoff does (I'm not sure).
1847 It also happens for objfiles that have their functions reordered.
1848 For these, the symtab we are looking for is not necessarily read in. */
1850 ALL_SYMTABS (objfile, s)
1852 bv = BLOCKVECTOR (s);
1853 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1855 if (BLOCK_START (b) <= pc
1856 && BLOCK_END (b) > pc
1858 || BLOCK_END (b) - BLOCK_START (b) < distance))
1860 /* For an objfile that has its functions reordered,
1861 find_pc_psymtab will find the proper partial symbol table
1862 and we simply return its corresponding symtab. */
1863 /* In order to better support objfiles that contain both
1864 stabs and coff debugging info, we continue on if a psymtab
1866 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1868 ps = find_pc_sect_psymtab (pc, section);
1870 return PSYMTAB_TO_SYMTAB (ps);
1875 struct symbol *sym = NULL;
1877 ALL_BLOCK_SYMBOLS (b, i, sym)
1879 fixup_symbol_section (sym, objfile);
1880 if (section == SYMBOL_BFD_SECTION (sym))
1883 if ((i >= BLOCK_BUCKETS (b)) && (sym == NULL))
1884 continue; /* no symbol in this symtab matches section */
1886 distance = BLOCK_END (b) - BLOCK_START (b);
1895 ps = find_pc_sect_psymtab (pc, section);
1899 /* Might want to error() here (in case symtab is corrupt and
1900 will cause a core dump), but maybe we can successfully
1901 continue, so let's not. */
1903 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1905 s = PSYMTAB_TO_SYMTAB (ps);
1910 /* Find the symtab associated with PC. Look through the psymtabs and
1911 read in another symtab if necessary. Backward compatibility, no section */
1914 find_pc_symtab (CORE_ADDR pc)
1916 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1920 /* Find the source file and line number for a given PC value and SECTION.
1921 Return a structure containing a symtab pointer, a line number,
1922 and a pc range for the entire source line.
1923 The value's .pc field is NOT the specified pc.
1924 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1925 use the line that ends there. Otherwise, in that case, the line
1926 that begins there is used. */
1928 /* The big complication here is that a line may start in one file, and end just
1929 before the start of another file. This usually occurs when you #include
1930 code in the middle of a subroutine. To properly find the end of a line's PC
1931 range, we must search all symtabs associated with this compilation unit, and
1932 find the one whose first PC is closer than that of the next line in this
1935 /* If it's worth the effort, we could be using a binary search. */
1937 struct symtab_and_line
1938 find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent)
1941 register struct linetable *l;
1944 register struct linetable_entry *item;
1945 struct symtab_and_line val;
1946 struct blockvector *bv;
1947 struct minimal_symbol *msymbol;
1948 struct minimal_symbol *mfunsym;
1950 /* Info on best line seen so far, and where it starts, and its file. */
1952 struct linetable_entry *best = NULL;
1953 CORE_ADDR best_end = 0;
1954 struct symtab *best_symtab = 0;
1956 /* Store here the first line number
1957 of a file which contains the line at the smallest pc after PC.
1958 If we don't find a line whose range contains PC,
1959 we will use a line one less than this,
1960 with a range from the start of that file to the first line's pc. */
1961 struct linetable_entry *alt = NULL;
1962 struct symtab *alt_symtab = 0;
1964 /* Info on best line seen in this file. */
1966 struct linetable_entry *prev;
1968 /* If this pc is not from the current frame,
1969 it is the address of the end of a call instruction.
1970 Quite likely that is the start of the following statement.
1971 But what we want is the statement containing the instruction.
1972 Fudge the pc to make sure we get that. */
1974 init_sal (&val); /* initialize to zeroes */
1976 /* It's tempting to assume that, if we can't find debugging info for
1977 any function enclosing PC, that we shouldn't search for line
1978 number info, either. However, GAS can emit line number info for
1979 assembly files --- very helpful when debugging hand-written
1980 assembly code. In such a case, we'd have no debug info for the
1981 function, but we would have line info. */
1986 /* elz: added this because this function returned the wrong
1987 information if the pc belongs to a stub (import/export)
1988 to call a shlib function. This stub would be anywhere between
1989 two functions in the target, and the line info was erroneously
1990 taken to be the one of the line before the pc.
1992 /* RT: Further explanation:
1994 * We have stubs (trampolines) inserted between procedures.
1996 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1997 * exists in the main image.
1999 * In the minimal symbol table, we have a bunch of symbols
2000 * sorted by start address. The stubs are marked as "trampoline",
2001 * the others appear as text. E.g.:
2003 * Minimal symbol table for main image
2004 * main: code for main (text symbol)
2005 * shr1: stub (trampoline symbol)
2006 * foo: code for foo (text symbol)
2008 * Minimal symbol table for "shr1" image:
2010 * shr1: code for shr1 (text symbol)
2013 * So the code below is trying to detect if we are in the stub
2014 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2015 * and if found, do the symbolization from the real-code address
2016 * rather than the stub address.
2018 * Assumptions being made about the minimal symbol table:
2019 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2020 * if we're really in the trampoline. If we're beyond it (say
2021 * we're in "foo" in the above example), it'll have a closer
2022 * symbol (the "foo" text symbol for example) and will not
2023 * return the trampoline.
2024 * 2. lookup_minimal_symbol_text() will find a real text symbol
2025 * corresponding to the trampoline, and whose address will
2026 * be different than the trampoline address. I put in a sanity
2027 * check for the address being the same, to avoid an
2028 * infinite recursion.
2030 msymbol = lookup_minimal_symbol_by_pc (pc);
2031 if (msymbol != NULL)
2032 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
2034 mfunsym = lookup_minimal_symbol_text (DEPRECATED_SYMBOL_NAME (msymbol), NULL, NULL);
2035 if (mfunsym == NULL)
2036 /* I eliminated this warning since it is coming out
2037 * in the following situation:
2038 * gdb shmain // test program with shared libraries
2039 * (gdb) break shr1 // function in shared lib
2040 * Warning: In stub for ...
2041 * In the above situation, the shared lib is not loaded yet,
2042 * so of course we can't find the real func/line info,
2043 * but the "break" still works, and the warning is annoying.
2044 * So I commented out the warning. RT */
2045 /* warning ("In stub for %s; unable to find real function/line info", DEPRECATED_SYMBOL_NAME (msymbol)) */ ;
2047 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
2048 /* Avoid infinite recursion */
2049 /* See above comment about why warning is commented out */
2050 /* warning ("In stub for %s; unable to find real function/line info", DEPRECATED_SYMBOL_NAME (msymbol)) */ ;
2053 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
2057 s = find_pc_sect_symtab (pc, section);
2060 /* if no symbol information, return previous pc */
2067 bv = BLOCKVECTOR (s);
2069 /* Look at all the symtabs that share this blockvector.
2070 They all have the same apriori range, that we found was right;
2071 but they have different line tables. */
2073 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
2075 /* Find the best line in this symtab. */
2082 /* I think len can be zero if the symtab lacks line numbers
2083 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2084 I'm not sure which, and maybe it depends on the symbol
2090 item = l->item; /* Get first line info */
2092 /* Is this file's first line closer than the first lines of other files?
2093 If so, record this file, and its first line, as best alternate. */
2094 if (item->pc > pc && (!alt || item->pc < alt->pc))
2100 for (i = 0; i < len; i++, item++)
2102 /* Leave prev pointing to the linetable entry for the last line
2103 that started at or before PC. */
2110 /* At this point, prev points at the line whose start addr is <= pc, and
2111 item points at the next line. If we ran off the end of the linetable
2112 (pc >= start of the last line), then prev == item. If pc < start of
2113 the first line, prev will not be set. */
2115 /* Is this file's best line closer than the best in the other files?
2116 If so, record this file, and its best line, as best so far. Don't
2117 save prev if it represents the end of a function (i.e. line number
2118 0) instead of a real line. */
2120 if (prev && prev->line && (!best || prev->pc > best->pc))
2125 /* Discard BEST_END if it's before the PC of the current BEST. */
2126 if (best_end <= best->pc)
2130 /* If another line (denoted by ITEM) is in the linetable and its
2131 PC is after BEST's PC, but before the current BEST_END, then
2132 use ITEM's PC as the new best_end. */
2133 if (best && i < len && item->pc > best->pc
2134 && (best_end == 0 || best_end > item->pc))
2135 best_end = item->pc;
2141 { /* If we didn't find any line # info, just
2147 val.symtab = alt_symtab;
2148 val.line = alt->line - 1;
2150 /* Don't return line 0, that means that we didn't find the line. */
2154 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2158 else if (best->line == 0)
2160 /* If our best fit is in a range of PC's for which no line
2161 number info is available (line number is zero) then we didn't
2162 find any valid line information. */
2167 val.symtab = best_symtab;
2168 val.line = best->line;
2170 if (best_end && (!alt || best_end < alt->pc))
2175 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2177 val.section = section;
2181 /* Backward compatibility (no section) */
2183 struct symtab_and_line
2184 find_pc_line (CORE_ADDR pc, int notcurrent)
2188 section = find_pc_overlay (pc);
2189 if (pc_in_unmapped_range (pc, section))
2190 pc = overlay_mapped_address (pc, section);
2191 return find_pc_sect_line (pc, section, notcurrent);
2194 /* Find line number LINE in any symtab whose name is the same as
2197 If found, return the symtab that contains the linetable in which it was
2198 found, set *INDEX to the index in the linetable of the best entry
2199 found, and set *EXACT_MATCH nonzero if the value returned is an
2202 If not found, return NULL. */
2205 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2209 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2213 struct linetable *best_linetable;
2214 struct symtab *best_symtab;
2216 /* First try looking it up in the given symtab. */
2217 best_linetable = LINETABLE (symtab);
2218 best_symtab = symtab;
2219 best_index = find_line_common (best_linetable, line, &exact);
2220 if (best_index < 0 || !exact)
2222 /* Didn't find an exact match. So we better keep looking for
2223 another symtab with the same name. In the case of xcoff,
2224 multiple csects for one source file (produced by IBM's FORTRAN
2225 compiler) produce multiple symtabs (this is unavoidable
2226 assuming csects can be at arbitrary places in memory and that
2227 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2229 /* BEST is the smallest linenumber > LINE so far seen,
2230 or 0 if none has been seen so far.
2231 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2234 struct objfile *objfile;
2237 if (best_index >= 0)
2238 best = best_linetable->item[best_index].line;
2242 ALL_SYMTABS (objfile, s)
2244 struct linetable *l;
2247 if (!STREQ (symtab->filename, s->filename))
2250 ind = find_line_common (l, line, &exact);
2260 if (best == 0 || l->item[ind].line < best)
2262 best = l->item[ind].line;
2275 *index = best_index;
2277 *exact_match = exact;
2282 /* Set the PC value for a given source file and line number and return true.
2283 Returns zero for invalid line number (and sets the PC to 0).
2284 The source file is specified with a struct symtab. */
2287 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2289 struct linetable *l;
2296 symtab = find_line_symtab (symtab, line, &ind, NULL);
2299 l = LINETABLE (symtab);
2300 *pc = l->item[ind].pc;
2307 /* Find the range of pc values in a line.
2308 Store the starting pc of the line into *STARTPTR
2309 and the ending pc (start of next line) into *ENDPTR.
2310 Returns 1 to indicate success.
2311 Returns 0 if could not find the specified line. */
2314 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2317 CORE_ADDR startaddr;
2318 struct symtab_and_line found_sal;
2321 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2324 /* This whole function is based on address. For example, if line 10 has
2325 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2326 "info line *0x123" should say the line goes from 0x100 to 0x200
2327 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2328 This also insures that we never give a range like "starts at 0x134
2329 and ends at 0x12c". */
2331 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2332 if (found_sal.line != sal.line)
2334 /* The specified line (sal) has zero bytes. */
2335 *startptr = found_sal.pc;
2336 *endptr = found_sal.pc;
2340 *startptr = found_sal.pc;
2341 *endptr = found_sal.end;
2346 /* Given a line table and a line number, return the index into the line
2347 table for the pc of the nearest line whose number is >= the specified one.
2348 Return -1 if none is found. The value is >= 0 if it is an index.
2350 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2353 find_line_common (register struct linetable *l, register int lineno,
2359 /* BEST is the smallest linenumber > LINENO so far seen,
2360 or 0 if none has been seen so far.
2361 BEST_INDEX identifies the item for it. */
2363 int best_index = -1;
2372 for (i = 0; i < len; i++)
2374 register struct linetable_entry *item = &(l->item[i]);
2376 if (item->line == lineno)
2378 /* Return the first (lowest address) entry which matches. */
2383 if (item->line > lineno && (best == 0 || item->line < best))
2390 /* If we got here, we didn't get an exact match. */
2397 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2399 struct symtab_and_line sal;
2400 sal = find_pc_line (pc, 0);
2403 return sal.symtab != 0;
2406 /* Given a function symbol SYM, find the symtab and line for the start
2408 If the argument FUNFIRSTLINE is nonzero, we want the first line
2409 of real code inside the function. */
2411 struct symtab_and_line
2412 find_function_start_sal (struct symbol *sym, int funfirstline)
2415 struct symtab_and_line sal;
2417 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2418 fixup_symbol_section (sym, NULL);
2420 { /* skip "first line" of function (which is actually its prologue) */
2421 asection *section = SYMBOL_BFD_SECTION (sym);
2422 /* If function is in an unmapped overlay, use its unmapped LMA
2423 address, so that SKIP_PROLOGUE has something unique to work on */
2424 if (section_is_overlay (section) &&
2425 !section_is_mapped (section))
2426 pc = overlay_unmapped_address (pc, section);
2428 pc += FUNCTION_START_OFFSET;
2429 pc = SKIP_PROLOGUE (pc);
2431 /* For overlays, map pc back into its mapped VMA range */
2432 pc = overlay_mapped_address (pc, section);
2434 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2436 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2437 /* Convex: no need to suppress code on first line, if any */
2440 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2441 line is still part of the same function. */
2443 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2444 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2446 /* First pc of next line */
2448 /* Recalculate the line number (might not be N+1). */
2449 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2457 /* If P is of the form "operator[ \t]+..." where `...' is
2458 some legitimate operator text, return a pointer to the
2459 beginning of the substring of the operator text.
2460 Otherwise, return "". */
2462 operator_chars (char *p, char **end)
2465 if (strncmp (p, "operator", 8))
2469 /* Don't get faked out by `operator' being part of a longer
2471 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2474 /* Allow some whitespace between `operator' and the operator symbol. */
2475 while (*p == ' ' || *p == '\t')
2478 /* Recognize 'operator TYPENAME'. */
2480 if (isalpha (*p) || *p == '_' || *p == '$')
2482 register char *q = p + 1;
2483 while (isalnum (*q) || *q == '_' || *q == '$')
2492 case '\\': /* regexp quoting */
2495 if (p[2] == '=') /* 'operator\*=' */
2497 else /* 'operator\*' */
2501 else if (p[1] == '[')
2504 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2505 else if (p[2] == '\\' && p[3] == ']')
2507 *end = p + 4; /* 'operator\[\]' */
2511 error ("nothing is allowed between '[' and ']'");
2515 /* Gratuitous qoute: skip it and move on. */
2537 if (p[0] == '-' && p[1] == '>')
2539 /* Struct pointer member operator 'operator->'. */
2542 *end = p + 3; /* 'operator->*' */
2545 else if (p[2] == '\\')
2547 *end = p + 4; /* Hopefully 'operator->\*' */
2552 *end = p + 2; /* 'operator->' */
2556 if (p[1] == '=' || p[1] == p[0])
2567 error ("`operator ()' must be specified without whitespace in `()'");
2572 error ("`operator ?:' must be specified without whitespace in `?:'");
2577 error ("`operator []' must be specified without whitespace in `[]'");
2581 error ("`operator %s' not supported", p);
2590 /* If FILE is not already in the table of files, return zero;
2591 otherwise return non-zero. Optionally add FILE to the table if ADD
2592 is non-zero. If *FIRST is non-zero, forget the old table
2595 filename_seen (const char *file, int add, int *first)
2597 /* Table of files seen so far. */
2598 static const char **tab = NULL;
2599 /* Allocated size of tab in elements.
2600 Start with one 256-byte block (when using GNU malloc.c).
2601 24 is the malloc overhead when range checking is in effect. */
2602 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2603 /* Current size of tab in elements. */
2604 static int tab_cur_size;
2610 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2614 /* Is FILE in tab? */
2615 for (p = tab; p < tab + tab_cur_size; p++)
2616 if (strcmp (*p, file) == 0)
2619 /* No; maybe add it to tab. */
2622 if (tab_cur_size == tab_alloc_size)
2624 tab_alloc_size *= 2;
2625 tab = (const char **) xrealloc ((char *) tab,
2626 tab_alloc_size * sizeof (*tab));
2628 tab[tab_cur_size++] = file;
2634 /* Slave routine for sources_info. Force line breaks at ,'s.
2635 NAME is the name to print and *FIRST is nonzero if this is the first
2636 name printed. Set *FIRST to zero. */
2638 output_source_filename (char *name, int *first)
2640 /* Since a single source file can result in several partial symbol
2641 tables, we need to avoid printing it more than once. Note: if
2642 some of the psymtabs are read in and some are not, it gets
2643 printed both under "Source files for which symbols have been
2644 read" and "Source files for which symbols will be read in on
2645 demand". I consider this a reasonable way to deal with the
2646 situation. I'm not sure whether this can also happen for
2647 symtabs; it doesn't hurt to check. */
2649 /* Was NAME already seen? */
2650 if (filename_seen (name, 1, first))
2652 /* Yes; don't print it again. */
2655 /* No; print it and reset *FIRST. */
2662 printf_filtered (", ");
2666 fputs_filtered (name, gdb_stdout);
2670 sources_info (char *ignore, int from_tty)
2672 register struct symtab *s;
2673 register struct partial_symtab *ps;
2674 register struct objfile *objfile;
2677 if (!have_full_symbols () && !have_partial_symbols ())
2679 error ("No symbol table is loaded. Use the \"file\" command.");
2682 printf_filtered ("Source files for which symbols have been read in:\n\n");
2685 ALL_SYMTABS (objfile, s)
2687 output_source_filename (s->filename, &first);
2689 printf_filtered ("\n\n");
2691 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2694 ALL_PSYMTABS (objfile, ps)
2698 output_source_filename (ps->filename, &first);
2701 printf_filtered ("\n");
2705 file_matches (char *file, char *files[], int nfiles)
2709 if (file != NULL && nfiles != 0)
2711 for (i = 0; i < nfiles; i++)
2713 if (strcmp (files[i], lbasename (file)) == 0)
2717 else if (nfiles == 0)
2722 /* Free any memory associated with a search. */
2724 free_search_symbols (struct symbol_search *symbols)
2726 struct symbol_search *p;
2727 struct symbol_search *next;
2729 for (p = symbols; p != NULL; p = next)
2737 do_free_search_symbols_cleanup (void *symbols)
2739 free_search_symbols (symbols);
2743 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2745 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2748 /* Helper function for sort_search_symbols and qsort. Can only
2749 sort symbols, not minimal symbols. */
2751 compare_search_syms (const void *sa, const void *sb)
2753 struct symbol_search **sym_a = (struct symbol_search **) sa;
2754 struct symbol_search **sym_b = (struct symbol_search **) sb;
2756 return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol),
2757 SYMBOL_PRINT_NAME ((*sym_b)->symbol));
2760 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2761 prevtail where it is, but update its next pointer to point to
2762 the first of the sorted symbols. */
2763 static struct symbol_search *
2764 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2766 struct symbol_search **symbols, *symp, *old_next;
2769 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2771 symp = prevtail->next;
2772 for (i = 0; i < nfound; i++)
2777 /* Generally NULL. */
2780 qsort (symbols, nfound, sizeof (struct symbol_search *),
2781 compare_search_syms);
2784 for (i = 0; i < nfound; i++)
2786 symp->next = symbols[i];
2789 symp->next = old_next;
2795 /* Search the symbol table for matches to the regular expression REGEXP,
2796 returning the results in *MATCHES.
2798 Only symbols of KIND are searched:
2799 FUNCTIONS_NAMESPACE - search all functions
2800 TYPES_NAMESPACE - search all type names
2801 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2802 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2803 and constants (enums)
2805 free_search_symbols should be called when *MATCHES is no longer needed.
2807 The results are sorted locally; each symtab's global and static blocks are
2808 separately alphabetized.
2811 search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[],
2812 struct symbol_search **matches)
2814 register struct symtab *s;
2815 register struct partial_symtab *ps;
2816 register struct blockvector *bv;
2817 struct blockvector *prev_bv = 0;
2818 register struct block *b;
2821 register struct symbol *sym;
2822 struct partial_symbol **psym;
2823 struct objfile *objfile;
2824 struct minimal_symbol *msymbol;
2827 static enum minimal_symbol_type types[]
2829 {mst_data, mst_text, mst_abs, mst_unknown};
2830 static enum minimal_symbol_type types2[]
2832 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2833 static enum minimal_symbol_type types3[]
2835 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2836 static enum minimal_symbol_type types4[]
2838 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2839 enum minimal_symbol_type ourtype;
2840 enum minimal_symbol_type ourtype2;
2841 enum minimal_symbol_type ourtype3;
2842 enum minimal_symbol_type ourtype4;
2843 struct symbol_search *sr;
2844 struct symbol_search *psr;
2845 struct symbol_search *tail;
2846 struct cleanup *old_chain = NULL;
2848 if (kind < VARIABLES_NAMESPACE)
2849 error ("must search on specific namespace");
2851 ourtype = types[(int) (kind - VARIABLES_NAMESPACE)];
2852 ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)];
2853 ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)];
2854 ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)];
2856 sr = *matches = NULL;
2861 /* Make sure spacing is right for C++ operators.
2862 This is just a courtesy to make the matching less sensitive
2863 to how many spaces the user leaves between 'operator'
2864 and <TYPENAME> or <OPERATOR>. */
2866 char *opname = operator_chars (regexp, &opend);
2869 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2870 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2872 /* There should 1 space between 'operator' and 'TYPENAME'. */
2873 if (opname[-1] != ' ' || opname[-2] == ' ')
2878 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2879 if (opname[-1] == ' ')
2882 /* If wrong number of spaces, fix it. */
2885 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2886 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2891 if (0 != (val = re_comp (regexp)))
2892 error ("Invalid regexp (%s): %s", val, regexp);
2895 /* Search through the partial symtabs *first* for all symbols
2896 matching the regexp. That way we don't have to reproduce all of
2897 the machinery below. */
2899 ALL_PSYMTABS (objfile, ps)
2901 struct partial_symbol **bound, **gbound, **sbound;
2907 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2908 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2911 /* Go through all of the symbols stored in a partial
2912 symtab in one loop. */
2913 psym = objfile->global_psymbols.list + ps->globals_offset;
2918 if (bound == gbound && ps->n_static_syms != 0)
2920 psym = objfile->static_psymbols.list + ps->statics_offset;
2931 /* If it would match (logic taken from loop below)
2932 load the file and go on to the next one */
2933 if (file_matches (ps->filename, files, nfiles)
2934 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym))
2935 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2936 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2937 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2938 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2939 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2941 PSYMTAB_TO_SYMTAB (ps);
2949 /* Here, we search through the minimal symbol tables for functions
2950 and variables that match, and force their symbols to be read.
2951 This is in particular necessary for demangled variable names,
2952 which are no longer put into the partial symbol tables.
2953 The symbol will then be found during the scan of symtabs below.
2955 For functions, find_pc_symtab should succeed if we have debug info
2956 for the function, for variables we have to call lookup_symbol
2957 to determine if the variable has debug info.
2958 If the lookup fails, set found_misc so that we will rescan to print
2959 any matching symbols without debug info.
2962 if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE))
2964 ALL_MSYMBOLS (objfile, msymbol)
2966 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2967 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2968 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2969 MSYMBOL_TYPE (msymbol) == ourtype4)
2971 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2973 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2975 /* FIXME: carlton/2003-02-04: Given that the
2976 semantics of lookup_symbol keeps on changing
2977 slightly, it would be a nice idea if we had a
2978 function lookup_symbol_minsym that found the
2979 symbol associated to a given minimal symbol (if
2981 if (kind == FUNCTIONS_NAMESPACE
2982 || lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol),
2983 (struct block *) NULL,
2985 0, (struct symtab **) NULL) == NULL)
2993 ALL_SYMTABS (objfile, s)
2995 bv = BLOCKVECTOR (s);
2996 /* Often many files share a blockvector.
2997 Scan each blockvector only once so that
2998 we don't get every symbol many times.
2999 It happens that the first symtab in the list
3000 for any given blockvector is the main file. */
3002 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
3004 struct symbol_search *prevtail = tail;
3006 b = BLOCKVECTOR_BLOCK (bv, i);
3007 ALL_BLOCK_SYMBOLS (b, j, sym)
3010 if (file_matches (s->filename, files, nfiles)
3011 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
3012 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
3013 && SYMBOL_CLASS (sym) != LOC_BLOCK
3014 && SYMBOL_CLASS (sym) != LOC_CONST)
3015 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)
3016 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3017 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK))))
3020 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3024 psr->msymbol = NULL;
3036 if (prevtail == NULL)
3038 struct symbol_search dummy;
3041 tail = sort_search_symbols (&dummy, nfound);
3044 old_chain = make_cleanup_free_search_symbols (sr);
3047 tail = sort_search_symbols (prevtail, nfound);
3053 /* If there are no eyes, avoid all contact. I mean, if there are
3054 no debug symbols, then print directly from the msymbol_vector. */
3056 if (found_misc || kind != FUNCTIONS_NAMESPACE)
3058 ALL_MSYMBOLS (objfile, msymbol)
3060 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3061 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3062 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3063 MSYMBOL_TYPE (msymbol) == ourtype4)
3065 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
3067 /* Functions: Look up by address. */
3068 if (kind != FUNCTIONS_NAMESPACE ||
3069 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
3071 /* Variables/Absolutes: Look up by name */
3072 if (lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol),
3073 (struct block *) NULL, VAR_NAMESPACE,
3074 0, (struct symtab **) NULL) == NULL)
3077 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3079 psr->msymbol = msymbol;
3086 old_chain = make_cleanup_free_search_symbols (sr);
3100 discard_cleanups (old_chain);
3103 /* Helper function for symtab_symbol_info, this function uses
3104 the data returned from search_symbols() to print information
3105 regarding the match to gdb_stdout.
3108 print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym,
3109 int block, char *last)
3111 if (last == NULL || strcmp (last, s->filename) != 0)
3113 fputs_filtered ("\nFile ", gdb_stdout);
3114 fputs_filtered (s->filename, gdb_stdout);
3115 fputs_filtered (":\n", gdb_stdout);
3118 if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK)
3119 printf_filtered ("static ");
3121 /* Typedef that is not a C++ class */
3122 if (kind == TYPES_NAMESPACE
3123 && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
3124 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
3125 /* variable, func, or typedef-that-is-c++-class */
3126 else if (kind < TYPES_NAMESPACE ||
3127 (kind == TYPES_NAMESPACE &&
3128 SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE))
3130 type_print (SYMBOL_TYPE (sym),
3131 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
3132 ? "" : SYMBOL_PRINT_NAME (sym)),
3135 printf_filtered (";\n");
3139 /* This help function for symtab_symbol_info() prints information
3140 for non-debugging symbols to gdb_stdout.
3143 print_msymbol_info (struct minimal_symbol *msymbol)
3147 if (TARGET_ADDR_BIT <= 32)
3148 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3149 & (CORE_ADDR) 0xffffffff,
3152 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3154 printf_filtered ("%s %s\n",
3155 tmp, SYMBOL_PRINT_NAME (msymbol));
3158 /* This is the guts of the commands "info functions", "info types", and
3159 "info variables". It calls search_symbols to find all matches and then
3160 print_[m]symbol_info to print out some useful information about the
3164 symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty)
3166 static char *classnames[]
3168 {"variable", "function", "type", "method"};
3169 struct symbol_search *symbols;
3170 struct symbol_search *p;
3171 struct cleanup *old_chain;
3172 char *last_filename = NULL;
3175 /* must make sure that if we're interrupted, symbols gets freed */
3176 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3177 old_chain = make_cleanup_free_search_symbols (symbols);
3179 printf_filtered (regexp
3180 ? "All %ss matching regular expression \"%s\":\n"
3181 : "All defined %ss:\n",
3182 classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp);
3184 for (p = symbols; p != NULL; p = p->next)
3188 if (p->msymbol != NULL)
3192 printf_filtered ("\nNon-debugging symbols:\n");
3195 print_msymbol_info (p->msymbol);
3199 print_symbol_info (kind,
3204 last_filename = p->symtab->filename;
3208 do_cleanups (old_chain);
3212 variables_info (char *regexp, int from_tty)
3214 symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty);
3218 functions_info (char *regexp, int from_tty)
3220 symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty);
3225 types_info (char *regexp, int from_tty)
3227 symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty);
3230 /* Breakpoint all functions matching regular expression. */
3233 rbreak_command_wrapper (char *regexp, int from_tty)
3235 rbreak_command (regexp, from_tty);
3239 rbreak_command (char *regexp, int from_tty)
3241 struct symbol_search *ss;
3242 struct symbol_search *p;
3243 struct cleanup *old_chain;
3245 search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss);
3246 old_chain = make_cleanup_free_search_symbols (ss);
3248 for (p = ss; p != NULL; p = p->next)
3250 if (p->msymbol == NULL)
3252 char *string = (char *) alloca (strlen (p->symtab->filename)
3253 + strlen (DEPRECATED_SYMBOL_NAME (p->symbol))
3255 strcpy (string, p->symtab->filename);
3256 strcat (string, ":'");
3257 strcat (string, DEPRECATED_SYMBOL_NAME (p->symbol));
3258 strcat (string, "'");
3259 break_command (string, from_tty);
3260 print_symbol_info (FUNCTIONS_NAMESPACE,
3264 p->symtab->filename);
3268 break_command (DEPRECATED_SYMBOL_NAME (p->msymbol), from_tty);
3269 printf_filtered ("<function, no debug info> %s;\n",
3270 SYMBOL_PRINT_NAME (p->msymbol));
3274 do_cleanups (old_chain);
3278 /* Helper routine for make_symbol_completion_list. */
3280 static int return_val_size;
3281 static int return_val_index;
3282 static char **return_val;
3284 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3286 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3287 /* Put only the mangled name on the list. */ \
3288 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3289 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3290 completion_list_add_name \
3291 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3293 completion_list_add_name \
3294 (DEPRECATED_SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3297 /* Test to see if the symbol specified by SYMNAME (which is already
3298 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3299 characters. If so, add it to the current completion list. */
3302 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3303 char *text, char *word)
3308 /* clip symbols that cannot match */
3310 if (strncmp (symname, sym_text, sym_text_len) != 0)
3315 /* We have a match for a completion, so add SYMNAME to the current list
3316 of matches. Note that the name is moved to freshly malloc'd space. */
3320 if (word == sym_text)
3322 new = xmalloc (strlen (symname) + 5);
3323 strcpy (new, symname);
3325 else if (word > sym_text)
3327 /* Return some portion of symname. */
3328 new = xmalloc (strlen (symname) + 5);
3329 strcpy (new, symname + (word - sym_text));
3333 /* Return some of SYM_TEXT plus symname. */
3334 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3335 strncpy (new, word, sym_text - word);
3336 new[sym_text - word] = '\0';
3337 strcat (new, symname);
3340 if (return_val_index + 3 > return_val_size)
3342 newsize = (return_val_size *= 2) * sizeof (char *);
3343 return_val = (char **) xrealloc ((char *) return_val, newsize);
3345 return_val[return_val_index++] = new;
3346 return_val[return_val_index] = NULL;
3350 /* Return a NULL terminated array of all symbols (regardless of class)
3351 which begin by matching TEXT. If the answer is no symbols, then
3352 the return value is an array which contains only a NULL pointer.
3354 Problem: All of the symbols have to be copied because readline frees them.
3355 I'm not going to worry about this; hopefully there won't be that many. */
3358 make_symbol_completion_list (char *text, char *word)
3360 register struct symbol *sym;
3361 register struct symtab *s;
3362 register struct partial_symtab *ps;
3363 register struct minimal_symbol *msymbol;
3364 register struct objfile *objfile;
3365 register struct block *b, *surrounding_static_block = 0;
3367 struct partial_symbol **psym;
3368 /* The symbol we are completing on. Points in same buffer as text. */
3370 /* Length of sym_text. */
3373 /* Now look for the symbol we are supposed to complete on.
3374 FIXME: This should be language-specific. */
3378 char *quote_pos = NULL;
3380 /* First see if this is a quoted string. */
3382 for (p = text; *p != '\0'; ++p)
3384 if (quote_found != '\0')
3386 if (*p == quote_found)
3387 /* Found close quote. */
3389 else if (*p == '\\' && p[1] == quote_found)
3390 /* A backslash followed by the quote character
3391 doesn't end the string. */
3394 else if (*p == '\'' || *p == '"')
3400 if (quote_found == '\'')
3401 /* A string within single quotes can be a symbol, so complete on it. */
3402 sym_text = quote_pos + 1;
3403 else if (quote_found == '"')
3404 /* A double-quoted string is never a symbol, nor does it make sense
3405 to complete it any other way. */
3407 return_val = (char **) xmalloc (sizeof (char *));
3408 return_val[0] = NULL;
3413 /* It is not a quoted string. Break it based on the characters
3414 which are in symbols. */
3417 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3426 sym_text_len = strlen (sym_text);
3428 return_val_size = 100;
3429 return_val_index = 0;
3430 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3431 return_val[0] = NULL;
3433 /* Look through the partial symtabs for all symbols which begin
3434 by matching SYM_TEXT. Add each one that you find to the list. */
3436 ALL_PSYMTABS (objfile, ps)
3438 /* If the psymtab's been read in we'll get it when we search
3439 through the blockvector. */
3443 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3444 psym < (objfile->global_psymbols.list + ps->globals_offset
3445 + ps->n_global_syms);
3448 /* If interrupted, then quit. */
3450 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3453 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3454 psym < (objfile->static_psymbols.list + ps->statics_offset
3455 + ps->n_static_syms);
3459 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3463 /* At this point scan through the misc symbol vectors and add each
3464 symbol you find to the list. Eventually we want to ignore
3465 anything that isn't a text symbol (everything else will be
3466 handled by the psymtab code above). */
3468 ALL_MSYMBOLS (objfile, msymbol)
3471 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3474 /* Search upwards from currently selected frame (so that we can
3475 complete on local vars. */
3477 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3479 if (!BLOCK_SUPERBLOCK (b))
3481 surrounding_static_block = b; /* For elmin of dups */
3484 /* Also catch fields of types defined in this places which match our
3485 text string. Only complete on types visible from current context. */
3487 ALL_BLOCK_SYMBOLS (b, i, sym)
3489 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3490 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3492 struct type *t = SYMBOL_TYPE (sym);
3493 enum type_code c = TYPE_CODE (t);
3495 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3497 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3499 if (TYPE_FIELD_NAME (t, j))
3501 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3502 sym_text, sym_text_len, text, word);
3510 /* Go through the symtabs and check the externs and statics for
3511 symbols which match. */
3513 ALL_SYMTABS (objfile, s)
3516 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3517 ALL_BLOCK_SYMBOLS (b, i, sym)
3519 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3523 ALL_SYMTABS (objfile, s)
3526 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3527 /* Don't do this block twice. */
3528 if (b == surrounding_static_block)
3530 ALL_BLOCK_SYMBOLS (b, i, sym)
3532 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3536 return (return_val);
3539 /* Like make_symbol_completion_list, but returns a list of symbols
3540 defined in a source file FILE. */
3543 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3545 register struct symbol *sym;
3546 register struct symtab *s;
3547 register struct block *b;
3549 /* The symbol we are completing on. Points in same buffer as text. */
3551 /* Length of sym_text. */
3554 /* Now look for the symbol we are supposed to complete on.
3555 FIXME: This should be language-specific. */
3559 char *quote_pos = NULL;
3561 /* First see if this is a quoted string. */
3563 for (p = text; *p != '\0'; ++p)
3565 if (quote_found != '\0')
3567 if (*p == quote_found)
3568 /* Found close quote. */
3570 else if (*p == '\\' && p[1] == quote_found)
3571 /* A backslash followed by the quote character
3572 doesn't end the string. */
3575 else if (*p == '\'' || *p == '"')
3581 if (quote_found == '\'')
3582 /* A string within single quotes can be a symbol, so complete on it. */
3583 sym_text = quote_pos + 1;
3584 else if (quote_found == '"')
3585 /* A double-quoted string is never a symbol, nor does it make sense
3586 to complete it any other way. */
3588 return_val = (char **) xmalloc (sizeof (char *));
3589 return_val[0] = NULL;
3594 /* It is not a quoted string. Break it based on the characters
3595 which are in symbols. */
3598 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3607 sym_text_len = strlen (sym_text);
3609 return_val_size = 10;
3610 return_val_index = 0;
3611 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3612 return_val[0] = NULL;
3614 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3616 s = lookup_symtab (srcfile);
3619 /* Maybe they typed the file with leading directories, while the
3620 symbol tables record only its basename. */
3621 const char *tail = lbasename (srcfile);
3624 s = lookup_symtab (tail);
3627 /* If we have no symtab for that file, return an empty list. */
3629 return (return_val);
3631 /* Go through this symtab and check the externs and statics for
3632 symbols which match. */
3634 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3635 ALL_BLOCK_SYMBOLS (b, i, sym)
3637 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3640 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3641 ALL_BLOCK_SYMBOLS (b, i, sym)
3643 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3646 return (return_val);
3649 /* A helper function for make_source_files_completion_list. It adds
3650 another file name to a list of possible completions, growing the
3651 list as necessary. */
3654 add_filename_to_list (const char *fname, char *text, char *word,
3655 char ***list, int *list_used, int *list_alloced)
3658 size_t fnlen = strlen (fname);
3660 if (*list_used + 1 >= *list_alloced)
3663 *list = (char **) xrealloc ((char *) *list,
3664 *list_alloced * sizeof (char *));
3669 /* Return exactly fname. */
3670 new = xmalloc (fnlen + 5);
3671 strcpy (new, fname);
3673 else if (word > text)
3675 /* Return some portion of fname. */
3676 new = xmalloc (fnlen + 5);
3677 strcpy (new, fname + (word - text));
3681 /* Return some of TEXT plus fname. */
3682 new = xmalloc (fnlen + (text - word) + 5);
3683 strncpy (new, word, text - word);
3684 new[text - word] = '\0';
3685 strcat (new, fname);
3687 (*list)[*list_used] = new;
3688 (*list)[++*list_used] = NULL;
3692 not_interesting_fname (const char *fname)
3694 static const char *illegal_aliens[] = {
3695 "_globals_", /* inserted by coff_symtab_read */
3700 for (i = 0; illegal_aliens[i]; i++)
3702 if (strcmp (fname, illegal_aliens[i]) == 0)
3708 /* Return a NULL terminated array of all source files whose names
3709 begin with matching TEXT. The file names are looked up in the
3710 symbol tables of this program. If the answer is no matchess, then
3711 the return value is an array which contains only a NULL pointer. */
3714 make_source_files_completion_list (char *text, char *word)
3716 register struct symtab *s;
3717 register struct partial_symtab *ps;
3718 register struct objfile *objfile;
3720 int list_alloced = 1;
3722 size_t text_len = strlen (text);
3723 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3724 const char *base_name;
3728 if (!have_full_symbols () && !have_partial_symbols ())
3731 ALL_SYMTABS (objfile, s)
3733 if (not_interesting_fname (s->filename))
3735 if (!filename_seen (s->filename, 1, &first)
3736 #if HAVE_DOS_BASED_FILE_SYSTEM
3737 && strncasecmp (s->filename, text, text_len) == 0
3739 && strncmp (s->filename, text, text_len) == 0
3743 /* This file matches for a completion; add it to the current
3745 add_filename_to_list (s->filename, text, word,
3746 &list, &list_used, &list_alloced);
3750 /* NOTE: We allow the user to type a base name when the
3751 debug info records leading directories, but not the other
3752 way around. This is what subroutines of breakpoint
3753 command do when they parse file names. */
3754 base_name = lbasename (s->filename);
3755 if (base_name != s->filename
3756 && !filename_seen (base_name, 1, &first)
3757 #if HAVE_DOS_BASED_FILE_SYSTEM
3758 && strncasecmp (base_name, text, text_len) == 0
3760 && strncmp (base_name, text, text_len) == 0
3763 add_filename_to_list (base_name, text, word,
3764 &list, &list_used, &list_alloced);
3768 ALL_PSYMTABS (objfile, ps)
3770 if (not_interesting_fname (ps->filename))
3774 if (!filename_seen (ps->filename, 1, &first)
3775 #if HAVE_DOS_BASED_FILE_SYSTEM
3776 && strncasecmp (ps->filename, text, text_len) == 0
3778 && strncmp (ps->filename, text, text_len) == 0
3782 /* This file matches for a completion; add it to the
3783 current list of matches. */
3784 add_filename_to_list (ps->filename, text, word,
3785 &list, &list_used, &list_alloced);
3790 base_name = lbasename (ps->filename);
3791 if (base_name != ps->filename
3792 && !filename_seen (base_name, 1, &first)
3793 #if HAVE_DOS_BASED_FILE_SYSTEM
3794 && strncasecmp (base_name, text, text_len) == 0
3796 && strncmp (base_name, text, text_len) == 0
3799 add_filename_to_list (base_name, text, word,
3800 &list, &list_used, &list_alloced);
3808 /* Determine if PC is in the prologue of a function. The prologue is the area
3809 between the first instruction of a function, and the first executable line.
3810 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3812 If non-zero, func_start is where we think the prologue starts, possibly
3813 by previous examination of symbol table information.
3817 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
3819 struct symtab_and_line sal;
3820 CORE_ADDR func_addr, func_end;
3822 /* We have several sources of information we can consult to figure
3824 - Compilers usually emit line number info that marks the prologue
3825 as its own "source line". So the ending address of that "line"
3826 is the end of the prologue. If available, this is the most
3828 - The minimal symbols and partial symbols, which can usually tell
3829 us the starting and ending addresses of a function.
3830 - If we know the function's start address, we can call the
3831 architecture-defined SKIP_PROLOGUE function to analyze the
3832 instruction stream and guess where the prologue ends.
3833 - Our `func_start' argument; if non-zero, this is the caller's
3834 best guess as to the function's entry point. At the time of
3835 this writing, handle_inferior_event doesn't get this right, so
3836 it should be our last resort. */
3838 /* Consult the partial symbol table, to find which function
3840 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3842 CORE_ADDR prologue_end;
3844 /* We don't even have minsym information, so fall back to using
3845 func_start, if given. */
3847 return 1; /* We *might* be in a prologue. */
3849 prologue_end = SKIP_PROLOGUE (func_start);
3851 return func_start <= pc && pc < prologue_end;
3854 /* If we have line number information for the function, that's
3855 usually pretty reliable. */
3856 sal = find_pc_line (func_addr, 0);
3858 /* Now sal describes the source line at the function's entry point,
3859 which (by convention) is the prologue. The end of that "line",
3860 sal.end, is the end of the prologue.
3862 Note that, for functions whose source code is all on a single
3863 line, the line number information doesn't always end up this way.
3864 So we must verify that our purported end-of-prologue address is
3865 *within* the function, not at its start or end. */
3867 || sal.end <= func_addr
3868 || func_end <= sal.end)
3870 /* We don't have any good line number info, so use the minsym
3871 information, together with the architecture-specific prologue
3873 CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr);
3875 return func_addr <= pc && pc < prologue_end;
3878 /* We have line number info, and it looks good. */
3879 return func_addr <= pc && pc < sal.end;
3883 /* Begin overload resolution functions */
3886 remove_params (const char *demangled_name)
3892 if (demangled_name == NULL)
3895 /* First find the end of the arg list. */
3896 argp = strrchr (demangled_name, ')');
3900 /* Back up to the beginning. */
3903 while (argp-- > demangled_name)
3907 else if (*argp == '(')
3916 internal_error (__FILE__, __LINE__,
3917 "bad demangled name %s\n", demangled_name);
3918 while (argp[-1] == ' ' && argp > demangled_name)
3921 new_name = xmalloc (argp - demangled_name + 1);
3922 memcpy (new_name, demangled_name, argp - demangled_name);
3923 new_name[argp - demangled_name] = '\0';
3927 /* Helper routine for make_symbol_completion_list. */
3929 static int sym_return_val_size;
3930 static int sym_return_val_index;
3931 static struct symbol **sym_return_val;
3933 /* Test to see if the symbol specified by SYMNAME (which is already
3934 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3935 characters. If so, add it to the current completion list. */
3938 overload_list_add_symbol (struct symbol *sym, char *oload_name)
3944 /* If there is no type information, we can't do anything, so skip */
3945 if (SYMBOL_TYPE (sym) == NULL)
3948 /* skip any symbols that we've already considered. */
3949 for (i = 0; i < sym_return_val_index; ++i)
3950 if (!strcmp (DEPRECATED_SYMBOL_NAME (sym), DEPRECATED_SYMBOL_NAME (sym_return_val[i])))
3953 /* Get the demangled name without parameters */
3954 sym_name = remove_params (SYMBOL_DEMANGLED_NAME (sym));
3958 /* skip symbols that cannot match */
3959 if (strcmp (sym_name, oload_name) != 0)
3967 /* We have a match for an overload instance, so add SYM to the current list
3968 * of overload instances */
3969 if (sym_return_val_index + 3 > sym_return_val_size)
3971 newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *);
3972 sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize);
3974 sym_return_val[sym_return_val_index++] = sym;
3975 sym_return_val[sym_return_val_index] = NULL;
3978 /* Return a null-terminated list of pointers to function symbols that
3979 * match name of the supplied symbol FSYM.
3980 * This is used in finding all overloaded instances of a function name.
3981 * This has been modified from make_symbol_completion_list. */
3985 make_symbol_overload_list (struct symbol *fsym)
3987 register struct symbol *sym;
3988 register struct symtab *s;
3989 register struct partial_symtab *ps;
3990 register struct objfile *objfile;
3991 register struct block *b, *surrounding_static_block = 0;
3993 /* The name we are completing on. */
3994 char *oload_name = NULL;
3995 /* Length of name. */
3996 int oload_name_len = 0;
3998 /* Look for the symbol we are supposed to complete on. */
4000 oload_name = remove_params (SYMBOL_DEMANGLED_NAME (fsym));
4003 sym_return_val_size = 1;
4004 sym_return_val = (struct symbol **) xmalloc (2 * sizeof (struct symbol *));
4005 sym_return_val[0] = fsym;
4006 sym_return_val[1] = NULL;
4008 return sym_return_val;
4010 oload_name_len = strlen (oload_name);
4012 sym_return_val_size = 100;
4013 sym_return_val_index = 0;
4014 sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *));
4015 sym_return_val[0] = NULL;
4017 /* Read in all partial symtabs containing a partial symbol named
4020 ALL_PSYMTABS (objfile, ps)
4022 struct partial_symbol **psym;
4024 /* If the psymtab's been read in we'll get it when we search
4025 through the blockvector. */
4029 if ((lookup_partial_symbol (ps, oload_name, 1, VAR_NAMESPACE) != NULL)
4030 || (lookup_partial_symbol (ps, oload_name, 0, VAR_NAMESPACE) != NULL))
4031 PSYMTAB_TO_SYMTAB (ps);
4034 /* Search upwards from currently selected frame (so that we can
4035 complete on local vars. */
4037 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
4039 if (!BLOCK_SUPERBLOCK (b))
4041 surrounding_static_block = b; /* For elimination of dups */
4044 /* Also catch fields of types defined in this places which match our
4045 text string. Only complete on types visible from current context. */
4047 ALL_BLOCK_SYMBOLS (b, i, sym)
4049 overload_list_add_symbol (sym, oload_name);
4053 /* Go through the symtabs and check the externs and statics for
4054 symbols which match. */
4056 ALL_SYMTABS (objfile, s)
4059 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4060 ALL_BLOCK_SYMBOLS (b, i, sym)
4062 overload_list_add_symbol (sym, oload_name);
4066 ALL_SYMTABS (objfile, s)
4069 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
4070 /* Don't do this block twice. */
4071 if (b == surrounding_static_block)
4073 ALL_BLOCK_SYMBOLS (b, i, sym)
4075 overload_list_add_symbol (sym, oload_name);
4081 return (sym_return_val);
4084 /* End of overload resolution functions */
4086 struct symtabs_and_lines
4087 decode_line_spec (char *string, int funfirstline)
4089 struct symtabs_and_lines sals;
4090 struct symtab_and_line cursal;
4093 error ("Empty line specification.");
4095 /* We use whatever is set as the current source line. We do not try
4096 and get a default or it will recursively call us! */
4097 cursal = get_current_source_symtab_and_line ();
4099 sals = decode_line_1 (&string, funfirstline,
4100 cursal.symtab, cursal.line,
4104 error ("Junk at end of line specification: %s", string);
4109 static char *name_of_main;
4112 set_main_name (const char *name)
4114 if (name_of_main != NULL)
4116 xfree (name_of_main);
4117 name_of_main = NULL;
4121 name_of_main = xstrdup (name);
4128 if (name_of_main != NULL)
4129 return name_of_main;
4136 _initialize_symtab (void)
4138 add_info ("variables", variables_info,
4139 "All global and static variable names, or those matching REGEXP.");
4141 add_com ("whereis", class_info, variables_info,
4142 "All global and static variable names, or those matching REGEXP.");
4144 add_info ("functions", functions_info,
4145 "All function names, or those matching REGEXP.");
4148 /* FIXME: This command has at least the following problems:
4149 1. It prints builtin types (in a very strange and confusing fashion).
4150 2. It doesn't print right, e.g. with
4151 typedef struct foo *FOO
4152 type_print prints "FOO" when we want to make it (in this situation)
4153 print "struct foo *".
4154 I also think "ptype" or "whatis" is more likely to be useful (but if
4155 there is much disagreement "info types" can be fixed). */
4156 add_info ("types", types_info,
4157 "All type names, or those matching REGEXP.");
4159 add_info ("sources", sources_info,
4160 "Source files in the program.");
4162 add_com ("rbreak", class_breakpoint, rbreak_command,
4163 "Set a breakpoint for all functions matching REGEXP.");
4167 add_com ("lf", class_info, sources_info, "Source files in the program");
4168 add_com ("lg", class_info, variables_info,
4169 "All global and static variable names, or those matching REGEXP.");
4172 /* Initialize the one built-in type that isn't language dependent... */
4173 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4174 "<unknown type>", (struct objfile *) NULL);