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 *,
83 static struct symbol *lookup_symbol_aux (const char *name,
84 const char *mangled_name,
85 const struct block *block,
86 const namespace_enum namespace,
87 int *is_a_field_of_this,
88 struct symtab **symtab);
91 struct symbol *lookup_symbol_aux_local (const char *name,
92 const char *mangled_name,
93 const struct block *block,
94 const namespace_enum namespace,
95 struct symtab **symtab,
96 const struct block **static_block);
99 struct symbol *lookup_symbol_aux_block (const char *name,
100 const char *mangled_name,
101 const struct block *block,
102 const namespace_enum namespace,
103 struct symtab **symtab);
106 struct symbol *lookup_symbol_aux_symtabs (int block_index,
108 const char *mangled_name,
109 const namespace_enum namespace,
110 struct symtab **symtab);
113 struct symbol *lookup_symbol_aux_psymtabs (int block_index,
115 const char *mangled_name,
116 const namespace_enum namespace,
117 struct symtab **symtab);
120 struct symbol *lookup_symbol_aux_minsyms (const char *name,
121 const char *mangled_name,
122 const namespace_enum namespace,
123 int *is_a_field_of_this,
124 struct symtab **symtab);
126 static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr);
128 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
129 /* Signals the presence of objects compiled by HP compilers */
130 int hp_som_som_object_present = 0;
132 static void fixup_section (struct general_symbol_info *, struct objfile *);
134 static int file_matches (char *, char **, int);
136 static void print_symbol_info (namespace_enum,
137 struct symtab *, struct symbol *, int, char *);
139 static void print_msymbol_info (struct minimal_symbol *);
141 static void symtab_symbol_info (char *, namespace_enum, int);
143 static void overload_list_add_symbol (struct symbol *sym, char *oload_name);
145 void _initialize_symtab (void);
149 /* The single non-language-specific builtin type */
150 struct type *builtin_type_error;
152 /* Block in which the most recently searched-for symbol was found.
153 Might be better to make this a parameter to lookup_symbol and
156 const struct block *block_found;
158 /* Check for a symtab of a specific name; first in symtabs, then in
159 psymtabs. *If* there is no '/' in the name, a match after a '/'
160 in the symtab filename will also work. */
163 lookup_symtab (const char *name)
165 register struct symtab *s;
166 register struct partial_symtab *ps;
167 register struct objfile *objfile;
168 char *real_path = NULL;
169 char *full_path = NULL;
171 /* Here we are interested in canonicalizing an absolute path, not
172 absolutizing a relative path. */
173 if (IS_ABSOLUTE_PATH (name))
175 full_path = xfullpath (name);
176 make_cleanup (xfree, full_path);
177 real_path = gdb_realpath (name);
178 make_cleanup (xfree, real_path);
183 /* First, search for an exact match */
185 ALL_SYMTABS (objfile, s)
187 if (FILENAME_CMP (name, s->filename) == 0)
192 /* If the user gave us an absolute path, try to find the file in
193 this symtab and use its absolute path. */
195 if (full_path != NULL)
197 const char *fp = symtab_to_filename (s);
198 if (FILENAME_CMP (full_path, fp) == 0)
204 if (real_path != NULL)
206 char *rp = gdb_realpath (symtab_to_filename (s));
207 make_cleanup (xfree, rp);
208 if (FILENAME_CMP (real_path, rp) == 0)
215 /* Now, search for a matching tail (only if name doesn't have any dirs) */
217 if (lbasename (name) == name)
218 ALL_SYMTABS (objfile, s)
220 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
224 /* Same search rules as above apply here, but now we look thru the
227 ps = lookup_partial_symtab (name);
232 error ("Internal: readin %s pst for `%s' found when no symtab found.",
235 s = PSYMTAB_TO_SYMTAB (ps);
240 /* At this point, we have located the psymtab for this file, but
241 the conversion to a symtab has failed. This usually happens
242 when we are looking up an include file. In this case,
243 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
244 been created. So, we need to run through the symtabs again in
245 order to find the file.
246 XXX - This is a crock, and should be fixed inside of the the
247 symbol parsing routines. */
251 /* Lookup the partial symbol table of a source file named NAME.
252 *If* there is no '/' in the name, a match after a '/'
253 in the psymtab filename will also work. */
255 struct partial_symtab *
256 lookup_partial_symtab (const char *name)
258 register struct partial_symtab *pst;
259 register struct objfile *objfile;
260 char *full_path = NULL;
261 char *real_path = NULL;
263 /* Here we are interested in canonicalizing an absolute path, not
264 absolutizing a relative path. */
265 if (IS_ABSOLUTE_PATH (name))
267 full_path = xfullpath (name);
268 make_cleanup (xfree, full_path);
269 real_path = gdb_realpath (name);
270 make_cleanup (xfree, real_path);
273 ALL_PSYMTABS (objfile, pst)
275 if (FILENAME_CMP (name, pst->filename) == 0)
280 /* If the user gave us an absolute path, try to find the file in
281 this symtab and use its absolute path. */
282 if (full_path != NULL)
284 if (pst->fullname == NULL)
285 source_full_path_of (pst->filename, &pst->fullname);
286 if (pst->fullname != NULL
287 && FILENAME_CMP (full_path, pst->fullname) == 0)
293 if (real_path != NULL)
296 if (pst->fullname == NULL)
297 source_full_path_of (pst->filename, &pst->fullname);
298 if (pst->fullname != NULL)
300 rp = gdb_realpath (pst->fullname);
301 make_cleanup (xfree, rp);
303 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
310 /* Now, search for a matching tail (only if name doesn't have any dirs) */
312 if (lbasename (name) == name)
313 ALL_PSYMTABS (objfile, pst)
315 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
322 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
323 full method name, which consist of the class name (from T), the unadorned
324 method name from METHOD_ID, and the signature for the specific overload,
325 specified by SIGNATURE_ID. Note that this function is g++ specific. */
328 gdb_mangle_name (struct type *type, int method_id, int signature_id)
330 int mangled_name_len;
332 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
333 struct fn_field *method = &f[signature_id];
334 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
335 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
336 char *newname = type_name_no_tag (type);
338 /* Does the form of physname indicate that it is the full mangled name
339 of a constructor (not just the args)? */
340 int is_full_physname_constructor;
343 int is_destructor = is_destructor_name (physname);
344 /* Need a new type prefix. */
345 char *const_prefix = method->is_const ? "C" : "";
346 char *volatile_prefix = method->is_volatile ? "V" : "";
348 int len = (newname == NULL ? 0 : strlen (newname));
350 /* Nothing to do if physname already contains a fully mangled v3 abi name
351 or an operator name. */
352 if ((physname[0] == '_' && physname[1] == 'Z')
353 || is_operator_name (field_name))
354 return xstrdup (physname);
356 is_full_physname_constructor = is_constructor_name (physname);
359 is_full_physname_constructor || (newname && STREQ (field_name, newname));
362 is_destructor = (strncmp (physname, "__dt", 4) == 0);
364 if (is_destructor || is_full_physname_constructor)
366 mangled_name = (char *) xmalloc (strlen (physname) + 1);
367 strcpy (mangled_name, physname);
373 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
375 else if (physname[0] == 't' || physname[0] == 'Q')
377 /* The physname for template and qualified methods already includes
379 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
385 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
387 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
388 + strlen (buf) + len + strlen (physname) + 1);
391 mangled_name = (char *) xmalloc (mangled_name_len);
393 mangled_name[0] = '\0';
395 strcpy (mangled_name, field_name);
397 strcat (mangled_name, buf);
398 /* If the class doesn't have a name, i.e. newname NULL, then we just
399 mangle it using 0 for the length of the class. Thus it gets mangled
400 as something starting with `::' rather than `classname::'. */
402 strcat (mangled_name, newname);
404 strcat (mangled_name, physname);
405 return (mangled_name);
409 /* Initialize the language dependent portion of a symbol
410 depending upon the language for the symbol. */
412 symbol_init_language_specific (struct general_symbol_info *gsymbol,
413 enum language language)
415 gsymbol->language = language;
416 if (gsymbol->language == language_cplus
417 || gsymbol->language == language_java
418 || gsymbol->language == language_objc)
420 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
424 memset (&gsymbol->language_specific, 0,
425 sizeof (gsymbol->language_specific));
429 /* Functions to initialize a symbol's mangled name. */
431 /* Create the hash table used for demangled names. Each hash entry is
432 a pair of strings; one for the mangled name and one for the demangled
433 name. The entry is hashed via just the mangled name. */
436 create_demangled_names_hash (struct objfile *objfile)
438 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
439 The hash table code will round this up to the next prime number.
440 Choosing a much larger table size wastes memory, and saves only about
441 1% in symbol reading. */
443 objfile->demangled_names_hash = htab_create_alloc_ex
444 (256, htab_hash_string, (int (*) (const void *, const void *)) streq,
445 NULL, objfile->md, xmcalloc, xmfree);
448 /* Try to determine the demangled name for a symbol, based on the
449 language of that symbol. If the language is set to language_auto,
450 it will attempt to find any demangling algorithm that works and
451 then set the language appropriately. The returned name is allocated
452 by the demangler and should be xfree'd. */
455 symbol_find_demangled_name (struct general_symbol_info *gsymbol,
458 char *demangled = NULL;
460 if (gsymbol->language == language_unknown)
461 gsymbol->language = language_auto;
462 if (gsymbol->language == language_cplus
463 || gsymbol->language == language_auto)
466 cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
467 if (demangled != NULL)
469 gsymbol->language = language_cplus;
473 if (gsymbol->language == language_java)
476 cplus_demangle (mangled,
477 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
478 if (demangled != NULL)
480 gsymbol->language = language_java;
487 /* Set both the mangled and demangled (if any) names for GSYMBOL based
488 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
489 is used, and the memory comes from that objfile's symbol_obstack.
490 LINKAGE_NAME is copied, so the pointer can be discarded after
491 calling this function. */
494 symbol_set_names (struct general_symbol_info *gsymbol,
495 const char *linkage_name, int len, struct objfile *objfile)
498 /* A 0-terminated copy of the linkage name. */
499 const char *linkage_name_copy;
501 if (objfile->demangled_names_hash == NULL)
502 create_demangled_names_hash (objfile);
504 /* The stabs reader generally provides names that are not
505 NUL-terminated; most of the other readers don't do this, so we
506 can just use the given copy. */
507 if (linkage_name[len] != '\0')
511 alloc_name = alloca (len + 1);
512 memcpy (alloc_name, linkage_name, len);
513 alloc_name[len] = '\0';
515 linkage_name_copy = alloc_name;
519 linkage_name_copy = linkage_name;
522 slot = (char **) htab_find_slot (objfile->demangled_names_hash,
523 linkage_name_copy, INSERT);
525 /* If this name is not in the hash table, add it. */
528 char *demangled_name = symbol_find_demangled_name (gsymbol,
530 int demangled_len = demangled_name ? strlen (demangled_name) : 0;
532 /* If there is a demangled name, place it right after the mangled name.
533 Otherwise, just place a second zero byte after the end of the mangled
535 *slot = obstack_alloc (&objfile->symbol_obstack,
536 len + demangled_len + 2);
537 memcpy (*slot, linkage_name_copy, len + 1);
538 if (demangled_name != NULL)
540 memcpy (*slot + len + 1, demangled_name, demangled_len + 1);
541 xfree (demangled_name);
544 (*slot)[len + 1] = '\0';
547 gsymbol->name = *slot;
548 if ((*slot)[len + 1] != '\0')
549 gsymbol->language_specific.cplus_specific.demangled_name
552 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
555 /* Initialize the demangled name of GSYMBOL if possible. Any required space
556 to store the name is obtained from the specified obstack. The function
557 symbol_set_names, above, should be used instead where possible for more
558 efficient memory usage. */
561 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
562 struct obstack *obstack)
564 char *mangled = gsymbol->name;
565 char *demangled = NULL;
567 demangled = symbol_find_demangled_name (gsymbol, mangled);
568 if (gsymbol->language == language_cplus
569 || gsymbol->language == language_java)
573 gsymbol->language_specific.cplus_specific.demangled_name
574 = obsavestring (demangled, strlen (demangled), obstack);
578 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
582 /* Unknown language; just clean up quietly. */
588 /* Return the source code name of a symbol. In languages where
589 demangling is necessary, this is the demangled name. */
592 symbol_natural_name (const struct general_symbol_info *gsymbol)
594 if ((gsymbol->language == language_cplus
595 || gsymbol->language == language_java
596 || gsymbol->language == language_objc)
597 && (gsymbol->language_specific.cplus_specific.demangled_name != NULL))
599 return gsymbol->language_specific.cplus_specific.demangled_name;
603 return gsymbol->name;
607 /* Return the demangled name for a symbol based on the language for
608 that symbol. If no demangled name exists, return NULL. */
610 symbol_demangled_name (struct general_symbol_info *gsymbol)
612 if (gsymbol->language == language_cplus
613 || gsymbol->language == language_java
614 || gsymbol->language == language_objc)
615 return gsymbol->language_specific.cplus_specific.demangled_name;
621 /* Initialize the structure fields to zero values. */
623 init_sal (struct symtab_and_line *sal)
634 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
636 struct partial_symtab *
637 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
639 register struct partial_symtab *pst;
640 register struct objfile *objfile;
641 struct minimal_symbol *msymbol;
643 /* If we know that this is not a text address, return failure. This is
644 necessary because we loop based on texthigh and textlow, which do
645 not include the data ranges. */
646 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
648 && (msymbol->type == mst_data
649 || msymbol->type == mst_bss
650 || msymbol->type == mst_abs
651 || msymbol->type == mst_file_data
652 || msymbol->type == mst_file_bss))
655 ALL_PSYMTABS (objfile, pst)
657 if (pc >= pst->textlow && pc < pst->texthigh)
659 struct partial_symtab *tpst;
661 /* An objfile that has its functions reordered might have
662 many partial symbol tables containing the PC, but
663 we want the partial symbol table that contains the
664 function containing the PC. */
665 if (!(objfile->flags & OBJF_REORDERED) &&
666 section == 0) /* can't validate section this way */
672 for (tpst = pst; tpst != NULL; tpst = tpst->next)
674 if (pc >= tpst->textlow && pc < tpst->texthigh)
676 struct partial_symbol *p;
678 p = find_pc_sect_psymbol (tpst, pc, section);
680 && SYMBOL_VALUE_ADDRESS (p)
681 == SYMBOL_VALUE_ADDRESS (msymbol))
691 /* Find which partial symtab contains PC. Return 0 if none.
692 Backward compatibility, no section */
694 struct partial_symtab *
695 find_pc_psymtab (CORE_ADDR pc)
697 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
700 /* Find which partial symbol within a psymtab matches PC and SECTION.
701 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
703 struct partial_symbol *
704 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
707 struct partial_symbol *best = NULL, *p, **pp;
711 psymtab = find_pc_sect_psymtab (pc, section);
715 /* Cope with programs that start at address 0 */
716 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
718 /* Search the global symbols as well as the static symbols, so that
719 find_pc_partial_function doesn't use a minimal symbol and thus
720 cache a bad endaddr. */
721 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
722 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
723 < psymtab->n_global_syms);
727 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
728 && SYMBOL_CLASS (p) == LOC_BLOCK
729 && pc >= SYMBOL_VALUE_ADDRESS (p)
730 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
731 || (psymtab->textlow == 0
732 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
734 if (section) /* match on a specific section */
736 fixup_psymbol_section (p, psymtab->objfile);
737 if (SYMBOL_BFD_SECTION (p) != section)
740 best_pc = SYMBOL_VALUE_ADDRESS (p);
745 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
746 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
747 < psymtab->n_static_syms);
751 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
752 && SYMBOL_CLASS (p) == LOC_BLOCK
753 && pc >= SYMBOL_VALUE_ADDRESS (p)
754 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
755 || (psymtab->textlow == 0
756 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
758 if (section) /* match on a specific section */
760 fixup_psymbol_section (p, psymtab->objfile);
761 if (SYMBOL_BFD_SECTION (p) != section)
764 best_pc = SYMBOL_VALUE_ADDRESS (p);
772 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
773 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
775 struct partial_symbol *
776 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
778 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
781 /* Debug symbols usually don't have section information. We need to dig that
782 out of the minimal symbols and stash that in the debug symbol. */
785 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
787 struct minimal_symbol *msym;
788 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
792 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
793 ginfo->section = SYMBOL_SECTION (msym);
798 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
803 if (SYMBOL_BFD_SECTION (sym))
806 fixup_section (&sym->ginfo, objfile);
811 struct partial_symbol *
812 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
817 if (SYMBOL_BFD_SECTION (psym))
820 fixup_section (&psym->ginfo, objfile);
825 /* Find the definition for a specified symbol name NAME
826 in namespace NAMESPACE, visible from lexical block BLOCK.
827 Returns the struct symbol pointer, or zero if no symbol is found.
828 If SYMTAB is non-NULL, store the symbol table in which the
829 symbol was found there, or NULL if not found.
830 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
831 NAME is a field of the current implied argument `this'. If so set
832 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
833 BLOCK_FOUND is set to the block in which NAME is found (in the case of
834 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
836 /* This function has a bunch of loops in it and it would seem to be
837 attractive to put in some QUIT's (though I'm not really sure
838 whether it can run long enough to be really important). But there
839 are a few calls for which it would appear to be bad news to quit
840 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
841 that there is C++ code below which can error(), but that probably
842 doesn't affect these calls since they are looking for a known
843 variable and thus can probably assume it will never hit the C++
847 lookup_symbol (const char *name, const struct block *block,
848 const namespace_enum namespace, int *is_a_field_of_this,
849 struct symtab **symtab)
851 char *demangled_name = NULL;
852 const char *modified_name = NULL;
853 const char *mangled_name = NULL;
854 int needtofreename = 0;
855 struct symbol *returnval;
857 modified_name = name;
859 /* If we are using C++ language, demangle the name before doing a lookup, so
860 we can always binary search. */
861 if (current_language->la_language == language_cplus)
863 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
867 modified_name = demangled_name;
872 if (case_sensitivity == case_sensitive_off)
878 copy = (char *) alloca (len + 1);
879 for (i= 0; i < len; i++)
880 copy[i] = tolower (name[i]);
882 modified_name = copy;
885 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
886 namespace, is_a_field_of_this, symtab);
888 xfree (demangled_name);
893 static struct symbol *
894 lookup_symbol_aux (const char *name, const char *mangled_name,
895 const struct block *block, const namespace_enum namespace,
896 int *is_a_field_of_this, struct symtab **symtab)
899 const struct block *static_block;
901 /* Search specified block and its superiors. Don't search
902 STATIC_BLOCK or GLOBAL_BLOCK. */
904 sym = lookup_symbol_aux_local (name, mangled_name, block, namespace,
905 symtab, &static_block);
910 /* NOTE: carlton/2002-11-05: At the time that this code was
911 #ifdeffed out, the value of 'block' was always NULL at this
912 point, hence the bemused comments below. */
914 /* FIXME: this code is never executed--block is always NULL at this
915 point. What is it trying to do, anyway? We already should have
916 checked the STATIC_BLOCK above (it is the superblock of top-level
917 blocks). Why is VAR_NAMESPACE special-cased? */
918 /* Don't need to mess with the psymtabs; if we have a block,
919 that file is read in. If we don't, then we deal later with
920 all the psymtab stuff that needs checking. */
921 /* Note (RT): The following never-executed code looks unnecessary to me also.
922 * If we change the code to use the original (passed-in)
923 * value of 'block', we could cause it to execute, but then what
924 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
925 * 'block' was already searched by the above code. And the STATIC_BLOCK's
926 * of *other* symtabs (those files not containing 'block' lexically)
927 * should not contain 'block' address-wise. So we wouldn't expect this
928 * code to find any 'sym''s that were not found above. I vote for
929 * deleting the following paragraph of code.
931 if (namespace == VAR_NAMESPACE && block != NULL)
934 /* Find the right symtab. */
935 ALL_SYMTABS (objfile, s)
937 bv = BLOCKVECTOR (s);
938 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
939 if (BLOCK_START (b) <= BLOCK_START (block)
940 && BLOCK_END (b) > BLOCK_START (block))
942 sym = lookup_block_symbol (b, name, mangled_name, VAR_NAMESPACE);
948 return fixup_symbol_section (sym, objfile);
955 /* C++: If requested to do so by the caller,
956 check to see if NAME is a field of `this'. */
957 if (is_a_field_of_this)
959 struct value *v = value_of_this (0);
961 *is_a_field_of_this = 0;
962 if (v && check_field (v, name))
964 *is_a_field_of_this = 1;
971 /* If there's a static block to search, search it next. */
973 /* NOTE: carlton/2002-12-05: There is a question as to whether or
974 not it would be appropriate to search the current global block
975 here as well. (That's what this code used to do before the
976 is_a_field_of_this check was moved up.) On the one hand, it's
977 redundant with the lookup_symbol_aux_symtabs search that happens
978 next. On the other hand, if decode_line_1 is passed an argument
979 like filename:var, then the user presumably wants 'var' to be
980 searched for in filename. On the third hand, there shouldn't be
981 multiple global variables all of which are named 'var', and it's
982 not like decode_line_1 has ever restricted its search to only
983 global variables in a single filename. All in all, only
984 searching the static block here seems best: it's correct and it's
987 /* NOTE: carlton/2002-12-05: There's also a possible performance
988 issue here: if you usually search for global symbols in the
989 current file, then it would be slightly better to search the
990 current global block before searching all the symtabs. But there
991 are other factors that have a much greater effect on performance
992 than that one, so I don't think we should worry about that for
995 if (static_block != NULL)
997 sym = lookup_symbol_aux_block (name, mangled_name, static_block,
1003 /* Now search all global blocks. Do the symtab's first, then
1004 check the psymtab's. If a psymtab indicates the existence
1005 of the desired name as a global, then do psymtab-to-symtab
1006 conversion on the fly and return the found symbol. */
1008 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, mangled_name,
1015 /* Check for the possibility of the symbol being a function or
1016 a mangled variable that is stored in one of the minimal symbol tables.
1017 Eventually, all global symbols might be resolved in this way. */
1019 sym = lookup_symbol_aux_minsyms (name, mangled_name,
1020 namespace, is_a_field_of_this,
1028 sym = lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, mangled_name,
1033 /* Now search all static file-level symbols. Not strictly correct,
1034 but more useful than an error. Do the symtabs first, then check
1035 the psymtabs. If a psymtab indicates the existence of the
1036 desired name as a file-level static, then do psymtab-to-symtab
1037 conversion on the fly and return the found symbol. */
1039 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, mangled_name,
1044 sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, mangled_name,
1051 /* Check for the possibility of the symbol being a function or
1052 a global variable that is stored in one of the minimal symbol tables.
1053 The "minimal symbol table" is built from linker-supplied info.
1055 RT: I moved this check to last, after the complete search of
1056 the global (p)symtab's and static (p)symtab's. For HP-generated
1057 symbol tables, this check was causing a premature exit from
1058 lookup_symbol with NULL return, and thus messing up symbol lookups
1059 of things like "c::f". It seems to me a check of the minimal
1060 symbol table ought to be a last resort in any case. I'm vaguely
1061 worried about the comment below which talks about FORTRAN routines "foo_"
1062 though... is it saying we need to do the "minsym" check before
1063 the static check in this case?
1067 sym = lookup_symbol_aux_minsyms (name, mangled_name,
1068 namespace, is_a_field_of_this,
1081 /* Check to see if the symbol is defined in BLOCK or its superiors.
1082 Don't search STATIC_BLOCK or GLOBAL_BLOCK. If we don't find a
1083 match, store the address of STATIC_BLOCK in static_block. */
1085 static struct symbol *
1086 lookup_symbol_aux_local (const char *name, const char *mangled_name,
1087 const struct block *block,
1088 const namespace_enum namespace,
1089 struct symtab **symtab,
1090 const struct block **static_block)
1094 /* Check if either no block is specified or it's a global block. */
1096 if (block == NULL || BLOCK_SUPERBLOCK (block) == NULL)
1098 *static_block = NULL;
1102 while (BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) != NULL)
1104 sym = lookup_symbol_aux_block (name, mangled_name, block, namespace,
1108 block = BLOCK_SUPERBLOCK (block);
1111 /* We've reached the static block. */
1113 *static_block = block;
1117 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1118 symbol, and set block_found appropriately. */
1120 static struct symbol *
1121 lookup_symbol_aux_block (const char *name, const char *mangled_name,
1122 const struct block *block,
1123 const namespace_enum namespace,
1124 struct symtab **symtab)
1127 struct objfile *objfile = NULL;
1128 struct blockvector *bv;
1130 struct symtab *s = NULL;
1132 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1135 block_found = block;
1138 /* Search the list of symtabs for one which contains the
1139 address of the start of this block. */
1140 ALL_SYMTABS (objfile, s)
1142 bv = BLOCKVECTOR (s);
1143 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1144 if (BLOCK_START (b) <= BLOCK_START (block)
1145 && BLOCK_END (b) > BLOCK_START (block))
1152 return fixup_symbol_section (sym, objfile);
1158 /* Check to see if the symbol is defined in one of the symtabs.
1159 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1160 depending on whether or not we want to search global symbols or
1163 static struct symbol *
1164 lookup_symbol_aux_symtabs (int block_index,
1165 const char *name, const char *mangled_name,
1166 const namespace_enum namespace,
1167 struct symtab **symtab)
1170 struct objfile *objfile;
1171 struct blockvector *bv;
1172 const struct block *block;
1175 ALL_SYMTABS (objfile, s)
1177 bv = BLOCKVECTOR (s);
1178 block = BLOCKVECTOR_BLOCK (bv, block_index);
1179 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1182 block_found = block;
1185 return fixup_symbol_section (sym, objfile);
1192 /* Check to see if the symbol is defined in one of the partial
1193 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1194 STATIC_BLOCK, depending on whether or not we want to search global
1195 symbols or static symbols. */
1197 static struct symbol *
1198 lookup_symbol_aux_psymtabs (int block_index, const char *name,
1199 const char *mangled_name,
1200 const namespace_enum namespace,
1201 struct symtab **symtab)
1204 struct objfile *objfile;
1205 struct blockvector *bv;
1206 const struct block *block;
1207 struct partial_symtab *ps;
1209 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
1211 ALL_PSYMTABS (objfile, ps)
1214 && lookup_partial_symbol (ps, name, mangled_name,
1215 psymtab_index, namespace))
1217 s = PSYMTAB_TO_SYMTAB (ps);
1218 bv = BLOCKVECTOR (s);
1219 block = BLOCKVECTOR_BLOCK (bv, block_index);
1220 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1223 /* This shouldn't be necessary, but as a last resort try
1224 looking in the statics even though the psymtab claimed
1225 the symbol was global, or vice-versa. It's possible
1226 that the psymtab gets it wrong in some cases. */
1228 /* FIXME: carlton/2002-09-30: Should we really do that?
1229 If that happens, isn't it likely to be a GDB error, in
1230 which case we should fix the GDB error rather than
1231 silently dealing with it here? So I'd vote for
1232 removing the check for the symbol in the other
1234 block = BLOCKVECTOR_BLOCK (bv,
1235 block_index == GLOBAL_BLOCK ?
1236 STATIC_BLOCK : GLOBAL_BLOCK);
1237 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1239 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>).",
1240 block_index == GLOBAL_BLOCK ? "global" : "static",
1241 name, ps->filename, name, name);
1245 return fixup_symbol_section (sym, objfile);
1252 /* Check for the possibility of the symbol being a function or a
1253 mangled variable that is stored in one of the minimal symbol
1254 tables. Eventually, all global symbols might be resolved in this
1257 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1258 lookup_symbol_aux, and what are now 'return' statements within
1259 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1260 sym was NULL. As far as I can tell, this was basically accidental;
1261 it didn't happen every time that msymbol was non-NULL, but only if
1262 some additional conditions held as well, and it caused problems
1263 with HP-generated symbol tables. */
1265 static struct symbol *
1266 lookup_symbol_aux_minsyms (const char *name,
1267 const char *mangled_name,
1268 const namespace_enum namespace,
1269 int *is_a_field_of_this,
1270 struct symtab **symtab)
1273 struct blockvector *bv;
1274 const struct block *block;
1275 struct minimal_symbol *msymbol;
1278 if (namespace == VAR_NAMESPACE)
1280 msymbol = lookup_minimal_symbol (name, NULL, NULL);
1282 if (msymbol != NULL)
1284 /* OK, we found a minimal symbol in spite of not finding any
1285 symbol. There are various possible explanations for
1286 this. One possibility is the symbol exists in code not
1287 compiled -g. Another possibility is that the 'psymtab'
1288 isn't doing its job. A third possibility, related to #2,
1289 is that we were confused by name-mangling. For instance,
1290 maybe the psymtab isn't doing its job because it only
1291 know about demangled names, but we were given a mangled
1294 /* We first use the address in the msymbol to try to locate
1295 the appropriate symtab. Note that find_pc_sect_symtab()
1296 has a side-effect of doing psymtab-to-symtab expansion,
1297 for the found symtab. */
1298 s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
1299 SYMBOL_BFD_SECTION (msymbol));
1302 /* This is a function which has a symtab for its address. */
1303 bv = BLOCKVECTOR (s);
1304 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1306 /* This call used to pass `DEPRECATED_SYMBOL_NAME (msymbol)' as the
1307 `name' argument to lookup_block_symbol. But the name
1308 of a minimal symbol is always mangled, so that seems
1309 to be clearly the wrong thing to pass as the
1312 lookup_block_symbol (block, name, mangled_name, namespace);
1313 /* We kept static functions in minimal symbol table as well as
1314 in static scope. We want to find them in the symbol table. */
1317 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1318 sym = lookup_block_symbol (block, name,
1319 mangled_name, namespace);
1322 /* NOTE: carlton/2002-12-04: The following comment was
1323 taken from a time when two versions of this function
1324 were part of the body of lookup_symbol_aux: this
1325 comment was taken from the version of the function
1326 that was #ifdef HPUXHPPA, and the comment was right
1327 before the 'return NULL' part of lookup_symbol_aux.
1328 (Hence the "Fall through and return 0" comment.)
1329 Elena did some digging into the situation for
1330 Fortran, and she reports:
1332 "I asked around (thanks to Jeff Knaggs), and I think
1333 the story for Fortran goes like this:
1335 "Apparently, in older Fortrans, '_' was not part of
1336 the user namespace. g77 attached a final '_' to
1337 procedure names as the exported symbols for linkage
1338 (foo_) , but the symbols went in the debug info just
1339 like 'foo'. The rationale behind this is not
1340 completely clear, and maybe it was done to other
1341 symbols as well, not just procedures." */
1343 /* If we get here with sym == 0, the symbol was
1344 found in the minimal symbol table
1345 but not in the symtab.
1346 Fall through and return 0 to use the msymbol
1347 definition of "foo_".
1348 (Note that outer code generally follows up a call
1349 to this routine with a call to lookup_minimal_symbol(),
1350 so a 0 return means we'll just flow into that other routine).
1352 This happens for Fortran "foo_" symbols,
1353 which are "foo" in the symtab.
1355 This can also happen if "asm" is used to make a
1356 regular symbol but not a debugging symbol, e.g.
1357 asm(".globl _main");
1361 if (symtab != NULL && sym != NULL)
1363 return fixup_symbol_section (sym, s->objfile);
1365 else if (MSYMBOL_TYPE (msymbol) != mst_text
1366 && MSYMBOL_TYPE (msymbol) != mst_file_text
1367 && !STREQ (name, DEPRECATED_SYMBOL_NAME (msymbol)))
1369 /* This is a mangled variable, look it up by its
1371 return lookup_symbol_aux (DEPRECATED_SYMBOL_NAME (msymbol), mangled_name,
1372 NULL, namespace, is_a_field_of_this,
1381 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1382 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1383 linkage name matches it. Check the global symbols if GLOBAL, the
1384 static symbols if not */
1386 static struct partial_symbol *
1387 lookup_partial_symbol (struct partial_symtab *pst, const char *name,
1388 const char *linkage_name, int global,
1389 namespace_enum namespace)
1391 struct partial_symbol *temp;
1392 struct partial_symbol **start, **psym;
1393 struct partial_symbol **top, **real_top, **bottom, **center;
1394 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1395 int do_linear_search = 1;
1402 pst->objfile->global_psymbols.list + pst->globals_offset :
1403 pst->objfile->static_psymbols.list + pst->statics_offset);
1405 if (global) /* This means we can use a binary search. */
1407 do_linear_search = 0;
1409 /* Binary search. This search is guaranteed to end with center
1410 pointing at the earliest partial symbol whose name might be
1411 correct. At that point *all* partial symbols with an
1412 appropriate name will be checked against the correct
1416 top = start + length - 1;
1418 while (top > bottom)
1420 center = bottom + (top - bottom) / 2;
1421 if (!(center < top))
1422 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1423 if (!do_linear_search
1424 && (SYMBOL_LANGUAGE (*center) == language_java))
1426 do_linear_search = 1;
1428 if (strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*center), name) >= 0)
1434 bottom = center + 1;
1437 if (!(top == bottom))
1438 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1440 while (top <= real_top
1441 && (linkage_name != NULL
1442 ? strcmp (SYMBOL_LINKAGE_NAME (*top), linkage_name) == 0
1443 : SYMBOL_MATCHES_NATURAL_NAME (*top,name)))
1445 if (SYMBOL_NAMESPACE (*top) == namespace)
1453 /* Can't use a binary search or else we found during the binary search that
1454 we should also do a linear search. */
1456 if (do_linear_search)
1458 for (psym = start; psym < start + length; psym++)
1460 if (namespace == SYMBOL_NAMESPACE (*psym))
1462 if (linkage_name != NULL
1463 ? strcmp (SYMBOL_LINKAGE_NAME (*psym), linkage_name) == 0
1464 : SYMBOL_MATCHES_NATURAL_NAME (*psym, name))
1475 /* Look up a type named NAME in the struct_namespace. The type returned
1476 must not be opaque -- i.e., must have at least one field defined
1478 This code was modelled on lookup_symbol -- the parts not relevant to looking
1479 up types were just left out. In particular it's assumed here that types
1480 are available in struct_namespace and only at file-static or global blocks. */
1484 lookup_transparent_type (const char *name)
1486 register struct symbol *sym;
1487 register struct symtab *s = NULL;
1488 register struct partial_symtab *ps;
1489 struct blockvector *bv;
1490 register struct objfile *objfile;
1491 register struct block *block;
1493 /* Now search all the global symbols. Do the symtab's first, then
1494 check the psymtab's. If a psymtab indicates the existence
1495 of the desired name as a global, then do psymtab-to-symtab
1496 conversion on the fly and return the found symbol. */
1498 ALL_SYMTABS (objfile, s)
1500 bv = BLOCKVECTOR (s);
1501 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1502 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1503 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1505 return SYMBOL_TYPE (sym);
1509 ALL_PSYMTABS (objfile, ps)
1511 if (!ps->readin && lookup_partial_symbol (ps, name, NULL,
1512 1, STRUCT_NAMESPACE))
1514 s = PSYMTAB_TO_SYMTAB (ps);
1515 bv = BLOCKVECTOR (s);
1516 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1517 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1520 /* This shouldn't be necessary, but as a last resort
1521 * try looking in the statics even though the psymtab
1522 * claimed the symbol was global. It's possible that
1523 * the psymtab gets it wrong in some cases.
1525 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1526 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1528 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1529 %s may be an inlined function, or may be a template function\n\
1530 (if a template, try specifying an instantiation: %s<type>).",
1531 name, ps->filename, name, name);
1533 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1534 return SYMBOL_TYPE (sym);
1538 /* Now search the static file-level symbols.
1539 Not strictly correct, but more useful than an error.
1540 Do the symtab's first, then
1541 check the psymtab's. If a psymtab indicates the existence
1542 of the desired name as a file-level static, then do psymtab-to-symtab
1543 conversion on the fly and return the found symbol.
1546 ALL_SYMTABS (objfile, s)
1548 bv = BLOCKVECTOR (s);
1549 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1550 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1551 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1553 return SYMBOL_TYPE (sym);
1557 ALL_PSYMTABS (objfile, ps)
1559 if (!ps->readin && lookup_partial_symbol (ps, name, NULL, 0, STRUCT_NAMESPACE))
1561 s = PSYMTAB_TO_SYMTAB (ps);
1562 bv = BLOCKVECTOR (s);
1563 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1564 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1567 /* This shouldn't be necessary, but as a last resort
1568 * try looking in the globals even though the psymtab
1569 * claimed the symbol was static. It's possible that
1570 * the psymtab gets it wrong in some cases.
1572 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1573 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1575 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1576 %s may be an inlined function, or may be a template function\n\
1577 (if a template, try specifying an instantiation: %s<type>).",
1578 name, ps->filename, name, name);
1580 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1581 return SYMBOL_TYPE (sym);
1584 return (struct type *) 0;
1588 /* Find the psymtab containing main(). */
1589 /* FIXME: What about languages without main() or specially linked
1590 executables that have no main() ? */
1592 struct partial_symtab *
1593 find_main_psymtab (void)
1595 register struct partial_symtab *pst;
1596 register struct objfile *objfile;
1598 ALL_PSYMTABS (objfile, pst)
1600 if (lookup_partial_symbol (pst, main_name (), NULL, 1, VAR_NAMESPACE))
1608 /* Search BLOCK for symbol NAME in NAMESPACE.
1610 Note that if NAME is the demangled form of a C++ symbol, we will fail
1611 to find a match during the binary search of the non-encoded names, but
1612 for now we don't worry about the slight inefficiency of looking for
1613 a match we'll never find, since it will go pretty quick. Once the
1614 binary search terminates, we drop through and do a straight linear
1615 search on the symbols. Each symbol which is marked as being a C++
1616 symbol (language_cplus set) has both the encoded and non-encoded names
1619 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1620 particular mangled name.
1624 lookup_block_symbol (register const struct block *block, const char *name,
1625 const char *mangled_name,
1626 const namespace_enum namespace)
1628 register int bot, top, inc;
1629 register struct symbol *sym;
1630 register struct symbol *sym_found = NULL;
1631 register int do_linear_search = 1;
1633 if (BLOCK_HASHTABLE (block))
1635 unsigned int hash_index;
1636 hash_index = msymbol_hash_iw (name);
1637 hash_index = hash_index % BLOCK_BUCKETS (block);
1638 for (sym = BLOCK_BUCKET (block, hash_index); sym; sym = sym->hash_next)
1640 if (SYMBOL_NAMESPACE (sym) == namespace
1642 ? strcmp (DEPRECATED_SYMBOL_NAME (sym), mangled_name) == 0
1643 : SYMBOL_MATCHES_NATURAL_NAME (sym, name)))
1649 /* If the blocks's symbols were sorted, start with a binary search. */
1651 if (BLOCK_SHOULD_SORT (block))
1653 /* Reset the linear search flag so if the binary search fails, we
1654 won't do the linear search once unless we find some reason to
1657 do_linear_search = 0;
1658 top = BLOCK_NSYMS (block);
1661 /* Advance BOT to not far before the first symbol whose name is NAME. */
1665 inc = (top - bot + 1);
1666 /* No need to keep binary searching for the last few bits worth. */
1671 inc = (inc >> 1) + bot;
1672 sym = BLOCK_SYM (block, inc);
1673 if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java))
1675 do_linear_search = 1;
1677 if (SYMBOL_NATURAL_NAME (sym)[0] < name[0])
1681 else if (SYMBOL_NATURAL_NAME (sym)[0] > name[0])
1685 else if (strcmp (SYMBOL_NATURAL_NAME (sym), name) < 0)
1695 /* Now scan forward until we run out of symbols, find one whose
1696 name is greater than NAME, or find one we want. If there is
1697 more than one symbol with the right name and namespace, we
1698 return the first one; I believe it is now impossible for us
1699 to encounter two symbols with the same name and namespace
1700 here, because blocks containing argument symbols are no
1701 longer sorted. The exception is for C++, where multiple functions
1702 (cloned constructors / destructors, in particular) can have
1703 the same demangled name. So if we have a particular
1704 mangled name to match, try to do so. */
1706 top = BLOCK_NSYMS (block);
1709 sym = BLOCK_SYM (block, bot);
1710 if (SYMBOL_NAMESPACE (sym) == namespace
1712 ? strcmp (DEPRECATED_SYMBOL_NAME (sym), mangled_name) == 0
1713 : SYMBOL_MATCHES_NATURAL_NAME (sym, name)))
1717 if (SYMBOL_PRINT_NAME (sym)[0] > name[0])
1725 /* Here if block isn't sorted, or we fail to find a match during the
1726 binary search above. If during the binary search above, we find a
1727 symbol which is a Java symbol, then we have re-enabled the linear
1728 search flag which was reset when starting the binary search.
1730 This loop is equivalent to the loop above, but hacked greatly for speed.
1732 Note that parameter symbols do not always show up last in the
1733 list; this loop makes sure to take anything else other than
1734 parameter symbols first; it only uses parameter symbols as a
1735 last resort. Note that this only takes up extra computation
1738 if (do_linear_search)
1740 top = BLOCK_NSYMS (block);
1744 sym = BLOCK_SYM (block, bot);
1745 if (SYMBOL_NAMESPACE (sym) == namespace
1747 ? strcmp (DEPRECATED_SYMBOL_NAME (sym), mangled_name) == 0
1748 : SYMBOL_MATCHES_NATURAL_NAME (sym, name)))
1750 /* If SYM has aliases, then use any alias that is active
1751 at the current PC. If no alias is active at the current
1752 PC, then use the main symbol.
1754 ?!? Is checking the current pc correct? Is this routine
1755 ever called to look up a symbol from another context?
1757 FIXME: No, it's not correct. If someone sets a
1758 conditional breakpoint at an address, then the
1759 breakpoint's `struct expression' should refer to the
1760 `struct symbol' appropriate for the breakpoint's
1761 address, which may not be the PC.
1763 Even if it were never called from another context,
1764 it's totally bizarre for lookup_symbol's behavior to
1765 depend on the value of the inferior's current PC. We
1766 should pass in the appropriate PC as well as the
1767 block. The interface to lookup_symbol should change
1768 to require the caller to provide a PC. */
1770 if (SYMBOL_ALIASES (sym))
1771 sym = find_active_alias (sym, read_pc ());
1774 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1775 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1776 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1777 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1778 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1779 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG &&
1780 SYMBOL_CLASS (sym) != LOC_COMPUTED_ARG)
1788 return (sym_found); /* Will be NULL if not found. */
1791 /* Given a main symbol SYM and ADDR, search through the alias
1792 list to determine if an alias is active at ADDR and return
1795 If no alias is active, then return SYM. */
1797 static struct symbol *
1798 find_active_alias (struct symbol *sym, CORE_ADDR addr)
1800 struct range_list *r;
1801 struct alias_list *aliases;
1803 /* If we have aliases, check them first. */
1804 aliases = SYMBOL_ALIASES (sym);
1808 if (!SYMBOL_RANGES (aliases->sym))
1809 return aliases->sym;
1810 for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
1812 if (r->start <= addr && r->end > addr)
1813 return aliases->sym;
1815 aliases = aliases->next;
1818 /* Nothing found, return the main symbol. */
1823 /* Find the symtab associated with PC and SECTION. Look through the
1824 psymtabs and read in another symtab if necessary. */
1827 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1829 register struct block *b;
1830 struct blockvector *bv;
1831 register struct symtab *s = NULL;
1832 register struct symtab *best_s = NULL;
1833 register struct partial_symtab *ps;
1834 register struct objfile *objfile;
1835 CORE_ADDR distance = 0;
1836 struct minimal_symbol *msymbol;
1838 /* If we know that this is not a text address, return failure. This is
1839 necessary because we loop based on the block's high and low code
1840 addresses, which do not include the data ranges, and because
1841 we call find_pc_sect_psymtab which has a similar restriction based
1842 on the partial_symtab's texthigh and textlow. */
1843 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1845 && (msymbol->type == mst_data
1846 || msymbol->type == mst_bss
1847 || msymbol->type == mst_abs
1848 || msymbol->type == mst_file_data
1849 || msymbol->type == mst_file_bss))
1852 /* Search all symtabs for the one whose file contains our address, and which
1853 is the smallest of all the ones containing the address. This is designed
1854 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1855 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1856 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1858 This happens for native ecoff format, where code from included files
1859 gets its own symtab. The symtab for the included file should have
1860 been read in already via the dependency mechanism.
1861 It might be swifter to create several symtabs with the same name
1862 like xcoff does (I'm not sure).
1864 It also happens for objfiles that have their functions reordered.
1865 For these, the symtab we are looking for is not necessarily read in. */
1867 ALL_SYMTABS (objfile, s)
1869 bv = BLOCKVECTOR (s);
1870 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1872 if (BLOCK_START (b) <= pc
1873 && BLOCK_END (b) > pc
1875 || BLOCK_END (b) - BLOCK_START (b) < distance))
1877 /* For an objfile that has its functions reordered,
1878 find_pc_psymtab will find the proper partial symbol table
1879 and we simply return its corresponding symtab. */
1880 /* In order to better support objfiles that contain both
1881 stabs and coff debugging info, we continue on if a psymtab
1883 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1885 ps = find_pc_sect_psymtab (pc, section);
1887 return PSYMTAB_TO_SYMTAB (ps);
1892 struct symbol *sym = NULL;
1894 ALL_BLOCK_SYMBOLS (b, i, sym)
1896 fixup_symbol_section (sym, objfile);
1897 if (section == SYMBOL_BFD_SECTION (sym))
1900 if ((i >= BLOCK_BUCKETS (b)) && (sym == NULL))
1901 continue; /* no symbol in this symtab matches section */
1903 distance = BLOCK_END (b) - BLOCK_START (b);
1912 ps = find_pc_sect_psymtab (pc, section);
1916 /* Might want to error() here (in case symtab is corrupt and
1917 will cause a core dump), but maybe we can successfully
1918 continue, so let's not. */
1920 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1922 s = PSYMTAB_TO_SYMTAB (ps);
1927 /* Find the symtab associated with PC. Look through the psymtabs and
1928 read in another symtab if necessary. Backward compatibility, no section */
1931 find_pc_symtab (CORE_ADDR pc)
1933 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1937 /* Find the source file and line number for a given PC value and SECTION.
1938 Return a structure containing a symtab pointer, a line number,
1939 and a pc range for the entire source line.
1940 The value's .pc field is NOT the specified pc.
1941 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1942 use the line that ends there. Otherwise, in that case, the line
1943 that begins there is used. */
1945 /* The big complication here is that a line may start in one file, and end just
1946 before the start of another file. This usually occurs when you #include
1947 code in the middle of a subroutine. To properly find the end of a line's PC
1948 range, we must search all symtabs associated with this compilation unit, and
1949 find the one whose first PC is closer than that of the next line in this
1952 /* If it's worth the effort, we could be using a binary search. */
1954 struct symtab_and_line
1955 find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent)
1958 register struct linetable *l;
1961 register struct linetable_entry *item;
1962 struct symtab_and_line val;
1963 struct blockvector *bv;
1964 struct minimal_symbol *msymbol;
1965 struct minimal_symbol *mfunsym;
1967 /* Info on best line seen so far, and where it starts, and its file. */
1969 struct linetable_entry *best = NULL;
1970 CORE_ADDR best_end = 0;
1971 struct symtab *best_symtab = 0;
1973 /* Store here the first line number
1974 of a file which contains the line at the smallest pc after PC.
1975 If we don't find a line whose range contains PC,
1976 we will use a line one less than this,
1977 with a range from the start of that file to the first line's pc. */
1978 struct linetable_entry *alt = NULL;
1979 struct symtab *alt_symtab = 0;
1981 /* Info on best line seen in this file. */
1983 struct linetable_entry *prev;
1985 /* If this pc is not from the current frame,
1986 it is the address of the end of a call instruction.
1987 Quite likely that is the start of the following statement.
1988 But what we want is the statement containing the instruction.
1989 Fudge the pc to make sure we get that. */
1991 init_sal (&val); /* initialize to zeroes */
1993 /* It's tempting to assume that, if we can't find debugging info for
1994 any function enclosing PC, that we shouldn't search for line
1995 number info, either. However, GAS can emit line number info for
1996 assembly files --- very helpful when debugging hand-written
1997 assembly code. In such a case, we'd have no debug info for the
1998 function, but we would have line info. */
2003 /* elz: added this because this function returned the wrong
2004 information if the pc belongs to a stub (import/export)
2005 to call a shlib function. This stub would be anywhere between
2006 two functions in the target, and the line info was erroneously
2007 taken to be the one of the line before the pc.
2009 /* RT: Further explanation:
2011 * We have stubs (trampolines) inserted between procedures.
2013 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2014 * exists in the main image.
2016 * In the minimal symbol table, we have a bunch of symbols
2017 * sorted by start address. The stubs are marked as "trampoline",
2018 * the others appear as text. E.g.:
2020 * Minimal symbol table for main image
2021 * main: code for main (text symbol)
2022 * shr1: stub (trampoline symbol)
2023 * foo: code for foo (text symbol)
2025 * Minimal symbol table for "shr1" image:
2027 * shr1: code for shr1 (text symbol)
2030 * So the code below is trying to detect if we are in the stub
2031 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2032 * and if found, do the symbolization from the real-code address
2033 * rather than the stub address.
2035 * Assumptions being made about the minimal symbol table:
2036 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2037 * if we're really in the trampoline. If we're beyond it (say
2038 * we're in "foo" in the above example), it'll have a closer
2039 * symbol (the "foo" text symbol for example) and will not
2040 * return the trampoline.
2041 * 2. lookup_minimal_symbol_text() will find a real text symbol
2042 * corresponding to the trampoline, and whose address will
2043 * be different than the trampoline address. I put in a sanity
2044 * check for the address being the same, to avoid an
2045 * infinite recursion.
2047 msymbol = lookup_minimal_symbol_by_pc (pc);
2048 if (msymbol != NULL)
2049 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
2051 mfunsym = lookup_minimal_symbol_text (DEPRECATED_SYMBOL_NAME (msymbol), NULL, NULL);
2052 if (mfunsym == NULL)
2053 /* I eliminated this warning since it is coming out
2054 * in the following situation:
2055 * gdb shmain // test program with shared libraries
2056 * (gdb) break shr1 // function in shared lib
2057 * Warning: In stub for ...
2058 * In the above situation, the shared lib is not loaded yet,
2059 * so of course we can't find the real func/line info,
2060 * but the "break" still works, and the warning is annoying.
2061 * So I commented out the warning. RT */
2062 /* warning ("In stub for %s; unable to find real function/line info", DEPRECATED_SYMBOL_NAME (msymbol)) */ ;
2064 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
2065 /* Avoid infinite recursion */
2066 /* See above comment about why warning is commented out */
2067 /* warning ("In stub for %s; unable to find real function/line info", DEPRECATED_SYMBOL_NAME (msymbol)) */ ;
2070 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
2074 s = find_pc_sect_symtab (pc, section);
2077 /* if no symbol information, return previous pc */
2084 bv = BLOCKVECTOR (s);
2086 /* Look at all the symtabs that share this blockvector.
2087 They all have the same apriori range, that we found was right;
2088 but they have different line tables. */
2090 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
2092 /* Find the best line in this symtab. */
2099 /* I think len can be zero if the symtab lacks line numbers
2100 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2101 I'm not sure which, and maybe it depends on the symbol
2107 item = l->item; /* Get first line info */
2109 /* Is this file's first line closer than the first lines of other files?
2110 If so, record this file, and its first line, as best alternate. */
2111 if (item->pc > pc && (!alt || item->pc < alt->pc))
2117 for (i = 0; i < len; i++, item++)
2119 /* Leave prev pointing to the linetable entry for the last line
2120 that started at or before PC. */
2127 /* At this point, prev points at the line whose start addr is <= pc, and
2128 item points at the next line. If we ran off the end of the linetable
2129 (pc >= start of the last line), then prev == item. If pc < start of
2130 the first line, prev will not be set. */
2132 /* Is this file's best line closer than the best in the other files?
2133 If so, record this file, and its best line, as best so far. Don't
2134 save prev if it represents the end of a function (i.e. line number
2135 0) instead of a real line. */
2137 if (prev && prev->line && (!best || prev->pc > best->pc))
2142 /* Discard BEST_END if it's before the PC of the current BEST. */
2143 if (best_end <= best->pc)
2147 /* If another line (denoted by ITEM) is in the linetable and its
2148 PC is after BEST's PC, but before the current BEST_END, then
2149 use ITEM's PC as the new best_end. */
2150 if (best && i < len && item->pc > best->pc
2151 && (best_end == 0 || best_end > item->pc))
2152 best_end = item->pc;
2158 { /* If we didn't find any line # info, just
2164 val.symtab = alt_symtab;
2165 val.line = alt->line - 1;
2167 /* Don't return line 0, that means that we didn't find the line. */
2171 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2175 else if (best->line == 0)
2177 /* If our best fit is in a range of PC's for which no line
2178 number info is available (line number is zero) then we didn't
2179 find any valid line information. */
2184 val.symtab = best_symtab;
2185 val.line = best->line;
2187 if (best_end && (!alt || best_end < alt->pc))
2192 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2194 val.section = section;
2198 /* Backward compatibility (no section) */
2200 struct symtab_and_line
2201 find_pc_line (CORE_ADDR pc, int notcurrent)
2205 section = find_pc_overlay (pc);
2206 if (pc_in_unmapped_range (pc, section))
2207 pc = overlay_mapped_address (pc, section);
2208 return find_pc_sect_line (pc, section, notcurrent);
2211 /* Find line number LINE in any symtab whose name is the same as
2214 If found, return the symtab that contains the linetable in which it was
2215 found, set *INDEX to the index in the linetable of the best entry
2216 found, and set *EXACT_MATCH nonzero if the value returned is an
2219 If not found, return NULL. */
2222 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2226 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2230 struct linetable *best_linetable;
2231 struct symtab *best_symtab;
2233 /* First try looking it up in the given symtab. */
2234 best_linetable = LINETABLE (symtab);
2235 best_symtab = symtab;
2236 best_index = find_line_common (best_linetable, line, &exact);
2237 if (best_index < 0 || !exact)
2239 /* Didn't find an exact match. So we better keep looking for
2240 another symtab with the same name. In the case of xcoff,
2241 multiple csects for one source file (produced by IBM's FORTRAN
2242 compiler) produce multiple symtabs (this is unavoidable
2243 assuming csects can be at arbitrary places in memory and that
2244 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2246 /* BEST is the smallest linenumber > LINE so far seen,
2247 or 0 if none has been seen so far.
2248 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2251 struct objfile *objfile;
2254 if (best_index >= 0)
2255 best = best_linetable->item[best_index].line;
2259 ALL_SYMTABS (objfile, s)
2261 struct linetable *l;
2264 if (!STREQ (symtab->filename, s->filename))
2267 ind = find_line_common (l, line, &exact);
2277 if (best == 0 || l->item[ind].line < best)
2279 best = l->item[ind].line;
2292 *index = best_index;
2294 *exact_match = exact;
2299 /* Set the PC value for a given source file and line number and return true.
2300 Returns zero for invalid line number (and sets the PC to 0).
2301 The source file is specified with a struct symtab. */
2304 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2306 struct linetable *l;
2313 symtab = find_line_symtab (symtab, line, &ind, NULL);
2316 l = LINETABLE (symtab);
2317 *pc = l->item[ind].pc;
2324 /* Find the range of pc values in a line.
2325 Store the starting pc of the line into *STARTPTR
2326 and the ending pc (start of next line) into *ENDPTR.
2327 Returns 1 to indicate success.
2328 Returns 0 if could not find the specified line. */
2331 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2334 CORE_ADDR startaddr;
2335 struct symtab_and_line found_sal;
2338 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2341 /* This whole function is based on address. For example, if line 10 has
2342 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2343 "info line *0x123" should say the line goes from 0x100 to 0x200
2344 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2345 This also insures that we never give a range like "starts at 0x134
2346 and ends at 0x12c". */
2348 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2349 if (found_sal.line != sal.line)
2351 /* The specified line (sal) has zero bytes. */
2352 *startptr = found_sal.pc;
2353 *endptr = found_sal.pc;
2357 *startptr = found_sal.pc;
2358 *endptr = found_sal.end;
2363 /* Given a line table and a line number, return the index into the line
2364 table for the pc of the nearest line whose number is >= the specified one.
2365 Return -1 if none is found. The value is >= 0 if it is an index.
2367 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2370 find_line_common (register struct linetable *l, register int lineno,
2376 /* BEST is the smallest linenumber > LINENO so far seen,
2377 or 0 if none has been seen so far.
2378 BEST_INDEX identifies the item for it. */
2380 int best_index = -1;
2389 for (i = 0; i < len; i++)
2391 register struct linetable_entry *item = &(l->item[i]);
2393 if (item->line == lineno)
2395 /* Return the first (lowest address) entry which matches. */
2400 if (item->line > lineno && (best == 0 || item->line < best))
2407 /* If we got here, we didn't get an exact match. */
2414 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2416 struct symtab_and_line sal;
2417 sal = find_pc_line (pc, 0);
2420 return sal.symtab != 0;
2423 /* Given a function symbol SYM, find the symtab and line for the start
2425 If the argument FUNFIRSTLINE is nonzero, we want the first line
2426 of real code inside the function. */
2428 struct symtab_and_line
2429 find_function_start_sal (struct symbol *sym, int funfirstline)
2432 struct symtab_and_line sal;
2434 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2435 fixup_symbol_section (sym, NULL);
2437 { /* skip "first line" of function (which is actually its prologue) */
2438 asection *section = SYMBOL_BFD_SECTION (sym);
2439 /* If function is in an unmapped overlay, use its unmapped LMA
2440 address, so that SKIP_PROLOGUE has something unique to work on */
2441 if (section_is_overlay (section) &&
2442 !section_is_mapped (section))
2443 pc = overlay_unmapped_address (pc, section);
2445 pc += FUNCTION_START_OFFSET;
2446 pc = SKIP_PROLOGUE (pc);
2448 /* For overlays, map pc back into its mapped VMA range */
2449 pc = overlay_mapped_address (pc, section);
2451 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2453 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2454 /* Convex: no need to suppress code on first line, if any */
2457 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2458 line is still part of the same function. */
2460 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2461 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2463 /* First pc of next line */
2465 /* Recalculate the line number (might not be N+1). */
2466 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2474 /* If P is of the form "operator[ \t]+..." where `...' is
2475 some legitimate operator text, return a pointer to the
2476 beginning of the substring of the operator text.
2477 Otherwise, return "". */
2479 operator_chars (char *p, char **end)
2482 if (strncmp (p, "operator", 8))
2486 /* Don't get faked out by `operator' being part of a longer
2488 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2491 /* Allow some whitespace between `operator' and the operator symbol. */
2492 while (*p == ' ' || *p == '\t')
2495 /* Recognize 'operator TYPENAME'. */
2497 if (isalpha (*p) || *p == '_' || *p == '$')
2499 register char *q = p + 1;
2500 while (isalnum (*q) || *q == '_' || *q == '$')
2509 case '\\': /* regexp quoting */
2512 if (p[2] == '=') /* 'operator\*=' */
2514 else /* 'operator\*' */
2518 else if (p[1] == '[')
2521 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2522 else if (p[2] == '\\' && p[3] == ']')
2524 *end = p + 4; /* 'operator\[\]' */
2528 error ("nothing is allowed between '[' and ']'");
2532 /* Gratuitous qoute: skip it and move on. */
2554 if (p[0] == '-' && p[1] == '>')
2556 /* Struct pointer member operator 'operator->'. */
2559 *end = p + 3; /* 'operator->*' */
2562 else if (p[2] == '\\')
2564 *end = p + 4; /* Hopefully 'operator->\*' */
2569 *end = p + 2; /* 'operator->' */
2573 if (p[1] == '=' || p[1] == p[0])
2584 error ("`operator ()' must be specified without whitespace in `()'");
2589 error ("`operator ?:' must be specified without whitespace in `?:'");
2594 error ("`operator []' must be specified without whitespace in `[]'");
2598 error ("`operator %s' not supported", p);
2607 /* If FILE is not already in the table of files, return zero;
2608 otherwise return non-zero. Optionally add FILE to the table if ADD
2609 is non-zero. If *FIRST is non-zero, forget the old table
2612 filename_seen (const char *file, int add, int *first)
2614 /* Table of files seen so far. */
2615 static const char **tab = NULL;
2616 /* Allocated size of tab in elements.
2617 Start with one 256-byte block (when using GNU malloc.c).
2618 24 is the malloc overhead when range checking is in effect. */
2619 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2620 /* Current size of tab in elements. */
2621 static int tab_cur_size;
2627 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2631 /* Is FILE in tab? */
2632 for (p = tab; p < tab + tab_cur_size; p++)
2633 if (strcmp (*p, file) == 0)
2636 /* No; maybe add it to tab. */
2639 if (tab_cur_size == tab_alloc_size)
2641 tab_alloc_size *= 2;
2642 tab = (const char **) xrealloc ((char *) tab,
2643 tab_alloc_size * sizeof (*tab));
2645 tab[tab_cur_size++] = file;
2651 /* Slave routine for sources_info. Force line breaks at ,'s.
2652 NAME is the name to print and *FIRST is nonzero if this is the first
2653 name printed. Set *FIRST to zero. */
2655 output_source_filename (char *name, int *first)
2657 /* Since a single source file can result in several partial symbol
2658 tables, we need to avoid printing it more than once. Note: if
2659 some of the psymtabs are read in and some are not, it gets
2660 printed both under "Source files for which symbols have been
2661 read" and "Source files for which symbols will be read in on
2662 demand". I consider this a reasonable way to deal with the
2663 situation. I'm not sure whether this can also happen for
2664 symtabs; it doesn't hurt to check. */
2666 /* Was NAME already seen? */
2667 if (filename_seen (name, 1, first))
2669 /* Yes; don't print it again. */
2672 /* No; print it and reset *FIRST. */
2679 printf_filtered (", ");
2683 fputs_filtered (name, gdb_stdout);
2687 sources_info (char *ignore, int from_tty)
2689 register struct symtab *s;
2690 register struct partial_symtab *ps;
2691 register struct objfile *objfile;
2694 if (!have_full_symbols () && !have_partial_symbols ())
2696 error ("No symbol table is loaded. Use the \"file\" command.");
2699 printf_filtered ("Source files for which symbols have been read in:\n\n");
2702 ALL_SYMTABS (objfile, s)
2704 output_source_filename (s->filename, &first);
2706 printf_filtered ("\n\n");
2708 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2711 ALL_PSYMTABS (objfile, ps)
2715 output_source_filename (ps->filename, &first);
2718 printf_filtered ("\n");
2722 file_matches (char *file, char *files[], int nfiles)
2726 if (file != NULL && nfiles != 0)
2728 for (i = 0; i < nfiles; i++)
2730 if (strcmp (files[i], lbasename (file)) == 0)
2734 else if (nfiles == 0)
2739 /* Free any memory associated with a search. */
2741 free_search_symbols (struct symbol_search *symbols)
2743 struct symbol_search *p;
2744 struct symbol_search *next;
2746 for (p = symbols; p != NULL; p = next)
2754 do_free_search_symbols_cleanup (void *symbols)
2756 free_search_symbols (symbols);
2760 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2762 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2765 /* Helper function for sort_search_symbols and qsort. Can only
2766 sort symbols, not minimal symbols. */
2768 compare_search_syms (const void *sa, const void *sb)
2770 struct symbol_search **sym_a = (struct symbol_search **) sa;
2771 struct symbol_search **sym_b = (struct symbol_search **) sb;
2773 return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol),
2774 SYMBOL_PRINT_NAME ((*sym_b)->symbol));
2777 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2778 prevtail where it is, but update its next pointer to point to
2779 the first of the sorted symbols. */
2780 static struct symbol_search *
2781 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2783 struct symbol_search **symbols, *symp, *old_next;
2786 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2788 symp = prevtail->next;
2789 for (i = 0; i < nfound; i++)
2794 /* Generally NULL. */
2797 qsort (symbols, nfound, sizeof (struct symbol_search *),
2798 compare_search_syms);
2801 for (i = 0; i < nfound; i++)
2803 symp->next = symbols[i];
2806 symp->next = old_next;
2812 /* Search the symbol table for matches to the regular expression REGEXP,
2813 returning the results in *MATCHES.
2815 Only symbols of KIND are searched:
2816 FUNCTIONS_NAMESPACE - search all functions
2817 TYPES_NAMESPACE - search all type names
2818 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2819 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2820 and constants (enums)
2822 free_search_symbols should be called when *MATCHES is no longer needed.
2824 The results are sorted locally; each symtab's global and static blocks are
2825 separately alphabetized.
2828 search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[],
2829 struct symbol_search **matches)
2831 register struct symtab *s;
2832 register struct partial_symtab *ps;
2833 register struct blockvector *bv;
2834 struct blockvector *prev_bv = 0;
2835 register struct block *b;
2838 register struct symbol *sym;
2839 struct partial_symbol **psym;
2840 struct objfile *objfile;
2841 struct minimal_symbol *msymbol;
2844 static enum minimal_symbol_type types[]
2846 {mst_data, mst_text, mst_abs, mst_unknown};
2847 static enum minimal_symbol_type types2[]
2849 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2850 static enum minimal_symbol_type types3[]
2852 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2853 static enum minimal_symbol_type types4[]
2855 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2856 enum minimal_symbol_type ourtype;
2857 enum minimal_symbol_type ourtype2;
2858 enum minimal_symbol_type ourtype3;
2859 enum minimal_symbol_type ourtype4;
2860 struct symbol_search *sr;
2861 struct symbol_search *psr;
2862 struct symbol_search *tail;
2863 struct cleanup *old_chain = NULL;
2865 if (kind < VARIABLES_NAMESPACE)
2866 error ("must search on specific namespace");
2868 ourtype = types[(int) (kind - VARIABLES_NAMESPACE)];
2869 ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)];
2870 ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)];
2871 ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)];
2873 sr = *matches = NULL;
2878 /* Make sure spacing is right for C++ operators.
2879 This is just a courtesy to make the matching less sensitive
2880 to how many spaces the user leaves between 'operator'
2881 and <TYPENAME> or <OPERATOR>. */
2883 char *opname = operator_chars (regexp, &opend);
2886 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2887 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2889 /* There should 1 space between 'operator' and 'TYPENAME'. */
2890 if (opname[-1] != ' ' || opname[-2] == ' ')
2895 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2896 if (opname[-1] == ' ')
2899 /* If wrong number of spaces, fix it. */
2902 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2903 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2908 if (0 != (val = re_comp (regexp)))
2909 error ("Invalid regexp (%s): %s", val, regexp);
2912 /* Search through the partial symtabs *first* for all symbols
2913 matching the regexp. That way we don't have to reproduce all of
2914 the machinery below. */
2916 ALL_PSYMTABS (objfile, ps)
2918 struct partial_symbol **bound, **gbound, **sbound;
2924 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2925 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2928 /* Go through all of the symbols stored in a partial
2929 symtab in one loop. */
2930 psym = objfile->global_psymbols.list + ps->globals_offset;
2935 if (bound == gbound && ps->n_static_syms != 0)
2937 psym = objfile->static_psymbols.list + ps->statics_offset;
2948 /* If it would match (logic taken from loop below)
2949 load the file and go on to the next one */
2950 if (file_matches (ps->filename, files, nfiles)
2952 || re_exec (SYMBOL_NATURAL_NAME (*psym)) != 0)
2953 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2954 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2955 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2956 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2957 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2959 PSYMTAB_TO_SYMTAB (ps);
2967 /* Here, we search through the minimal symbol tables for functions
2968 and variables that match, and force their symbols to be read.
2969 This is in particular necessary for demangled variable names,
2970 which are no longer put into the partial symbol tables.
2971 The symbol will then be found during the scan of symtabs below.
2973 For functions, find_pc_symtab should succeed if we have debug info
2974 for the function, for variables we have to call lookup_symbol
2975 to determine if the variable has debug info.
2976 If the lookup fails, set found_misc so that we will rescan to print
2977 any matching symbols without debug info.
2980 if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE))
2982 ALL_MSYMBOLS (objfile, msymbol)
2984 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2985 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2986 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2987 MSYMBOL_TYPE (msymbol) == ourtype4)
2990 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
2992 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2994 /* FIXME: carlton/2003-02-04: Given that the
2995 semantics of lookup_symbol keeps on changing
2996 slightly, it would be a nice idea if we had a
2997 function lookup_symbol_minsym that found the
2998 symbol associated to a given minimal symbol (if
3000 if (kind == FUNCTIONS_NAMESPACE
3001 || lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol),
3002 (struct block *) NULL,
3004 0, (struct symtab **) NULL) == NULL)
3012 ALL_SYMTABS (objfile, s)
3014 bv = BLOCKVECTOR (s);
3015 /* Often many files share a blockvector.
3016 Scan each blockvector only once so that
3017 we don't get every symbol many times.
3018 It happens that the first symtab in the list
3019 for any given blockvector is the main file. */
3021 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
3023 struct symbol_search *prevtail = tail;
3025 b = BLOCKVECTOR_BLOCK (bv, i);
3026 ALL_BLOCK_SYMBOLS (b, j, sym)
3029 if (file_matches (s->filename, files, nfiles)
3031 || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0)
3032 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
3033 && SYMBOL_CLASS (sym) != LOC_BLOCK
3034 && SYMBOL_CLASS (sym) != LOC_CONST)
3035 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)
3036 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3037 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK))))
3040 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3044 psr->msymbol = NULL;
3056 if (prevtail == NULL)
3058 struct symbol_search dummy;
3061 tail = sort_search_symbols (&dummy, nfound);
3064 old_chain = make_cleanup_free_search_symbols (sr);
3067 tail = sort_search_symbols (prevtail, nfound);
3073 /* If there are no eyes, avoid all contact. I mean, if there are
3074 no debug symbols, then print directly from the msymbol_vector. */
3076 if (found_misc || kind != FUNCTIONS_NAMESPACE)
3078 ALL_MSYMBOLS (objfile, msymbol)
3080 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3081 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3082 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3083 MSYMBOL_TYPE (msymbol) == ourtype4)
3086 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
3088 /* Functions: Look up by address. */
3089 if (kind != FUNCTIONS_NAMESPACE ||
3090 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
3092 /* Variables/Absolutes: Look up by name */
3093 if (lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol),
3094 (struct block *) NULL, VAR_NAMESPACE,
3095 0, (struct symtab **) NULL) == NULL)
3098 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3100 psr->msymbol = msymbol;
3107 old_chain = make_cleanup_free_search_symbols (sr);
3121 discard_cleanups (old_chain);
3124 /* Helper function for symtab_symbol_info, this function uses
3125 the data returned from search_symbols() to print information
3126 regarding the match to gdb_stdout.
3129 print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym,
3130 int block, char *last)
3132 if (last == NULL || strcmp (last, s->filename) != 0)
3134 fputs_filtered ("\nFile ", gdb_stdout);
3135 fputs_filtered (s->filename, gdb_stdout);
3136 fputs_filtered (":\n", gdb_stdout);
3139 if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK)
3140 printf_filtered ("static ");
3142 /* Typedef that is not a C++ class */
3143 if (kind == TYPES_NAMESPACE
3144 && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
3145 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
3146 /* variable, func, or typedef-that-is-c++-class */
3147 else if (kind < TYPES_NAMESPACE ||
3148 (kind == TYPES_NAMESPACE &&
3149 SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE))
3151 type_print (SYMBOL_TYPE (sym),
3152 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
3153 ? "" : SYMBOL_PRINT_NAME (sym)),
3156 printf_filtered (";\n");
3160 /* This help function for symtab_symbol_info() prints information
3161 for non-debugging symbols to gdb_stdout.
3164 print_msymbol_info (struct minimal_symbol *msymbol)
3168 if (TARGET_ADDR_BIT <= 32)
3169 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3170 & (CORE_ADDR) 0xffffffff,
3173 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3175 printf_filtered ("%s %s\n",
3176 tmp, SYMBOL_PRINT_NAME (msymbol));
3179 /* This is the guts of the commands "info functions", "info types", and
3180 "info variables". It calls search_symbols to find all matches and then
3181 print_[m]symbol_info to print out some useful information about the
3185 symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty)
3187 static char *classnames[]
3189 {"variable", "function", "type", "method"};
3190 struct symbol_search *symbols;
3191 struct symbol_search *p;
3192 struct cleanup *old_chain;
3193 char *last_filename = NULL;
3196 /* must make sure that if we're interrupted, symbols gets freed */
3197 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3198 old_chain = make_cleanup_free_search_symbols (symbols);
3200 printf_filtered (regexp
3201 ? "All %ss matching regular expression \"%s\":\n"
3202 : "All defined %ss:\n",
3203 classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp);
3205 for (p = symbols; p != NULL; p = p->next)
3209 if (p->msymbol != NULL)
3213 printf_filtered ("\nNon-debugging symbols:\n");
3216 print_msymbol_info (p->msymbol);
3220 print_symbol_info (kind,
3225 last_filename = p->symtab->filename;
3229 do_cleanups (old_chain);
3233 variables_info (char *regexp, int from_tty)
3235 symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty);
3239 functions_info (char *regexp, int from_tty)
3241 symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty);
3246 types_info (char *regexp, int from_tty)
3248 symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty);
3251 /* Breakpoint all functions matching regular expression. */
3254 rbreak_command_wrapper (char *regexp, int from_tty)
3256 rbreak_command (regexp, from_tty);
3260 rbreak_command (char *regexp, int from_tty)
3262 struct symbol_search *ss;
3263 struct symbol_search *p;
3264 struct cleanup *old_chain;
3266 search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss);
3267 old_chain = make_cleanup_free_search_symbols (ss);
3269 for (p = ss; p != NULL; p = p->next)
3271 if (p->msymbol == NULL)
3273 char *string = (char *) alloca (strlen (p->symtab->filename)
3274 + strlen (DEPRECATED_SYMBOL_NAME (p->symbol))
3276 strcpy (string, p->symtab->filename);
3277 strcat (string, ":'");
3278 strcat (string, DEPRECATED_SYMBOL_NAME (p->symbol));
3279 strcat (string, "'");
3280 break_command (string, from_tty);
3281 print_symbol_info (FUNCTIONS_NAMESPACE,
3285 p->symtab->filename);
3289 break_command (DEPRECATED_SYMBOL_NAME (p->msymbol), from_tty);
3290 printf_filtered ("<function, no debug info> %s;\n",
3291 SYMBOL_PRINT_NAME (p->msymbol));
3295 do_cleanups (old_chain);
3299 /* Helper routine for make_symbol_completion_list. */
3301 static int return_val_size;
3302 static int return_val_index;
3303 static char **return_val;
3305 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3307 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3308 /* Put only the mangled name on the list. */ \
3309 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3310 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3311 completion_list_add_name \
3312 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3314 completion_list_add_name \
3315 (DEPRECATED_SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3318 /* Test to see if the symbol specified by SYMNAME (which is already
3319 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3320 characters. If so, add it to the current completion list. */
3323 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3324 char *text, char *word)
3329 /* clip symbols that cannot match */
3331 if (strncmp (symname, sym_text, sym_text_len) != 0)
3336 /* We have a match for a completion, so add SYMNAME to the current list
3337 of matches. Note that the name is moved to freshly malloc'd space. */
3341 if (word == sym_text)
3343 new = xmalloc (strlen (symname) + 5);
3344 strcpy (new, symname);
3346 else if (word > sym_text)
3348 /* Return some portion of symname. */
3349 new = xmalloc (strlen (symname) + 5);
3350 strcpy (new, symname + (word - sym_text));
3354 /* Return some of SYM_TEXT plus symname. */
3355 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3356 strncpy (new, word, sym_text - word);
3357 new[sym_text - word] = '\0';
3358 strcat (new, symname);
3361 if (return_val_index + 3 > return_val_size)
3363 newsize = (return_val_size *= 2) * sizeof (char *);
3364 return_val = (char **) xrealloc ((char *) return_val, newsize);
3366 return_val[return_val_index++] = new;
3367 return_val[return_val_index] = NULL;
3371 /* Return a NULL terminated array of all symbols (regardless of class)
3372 which begin by matching TEXT. If the answer is no symbols, then
3373 the return value is an array which contains only a NULL pointer.
3375 Problem: All of the symbols have to be copied because readline frees them.
3376 I'm not going to worry about this; hopefully there won't be that many. */
3379 make_symbol_completion_list (char *text, char *word)
3381 register struct symbol *sym;
3382 register struct symtab *s;
3383 register struct partial_symtab *ps;
3384 register struct minimal_symbol *msymbol;
3385 register struct objfile *objfile;
3386 register struct block *b, *surrounding_static_block = 0;
3388 struct partial_symbol **psym;
3389 /* The symbol we are completing on. Points in same buffer as text. */
3391 /* Length of sym_text. */
3394 /* Now look for the symbol we are supposed to complete on.
3395 FIXME: This should be language-specific. */
3399 char *quote_pos = NULL;
3401 /* First see if this is a quoted string. */
3403 for (p = text; *p != '\0'; ++p)
3405 if (quote_found != '\0')
3407 if (*p == quote_found)
3408 /* Found close quote. */
3410 else if (*p == '\\' && p[1] == quote_found)
3411 /* A backslash followed by the quote character
3412 doesn't end the string. */
3415 else if (*p == '\'' || *p == '"')
3421 if (quote_found == '\'')
3422 /* A string within single quotes can be a symbol, so complete on it. */
3423 sym_text = quote_pos + 1;
3424 else if (quote_found == '"')
3425 /* A double-quoted string is never a symbol, nor does it make sense
3426 to complete it any other way. */
3428 return_val = (char **) xmalloc (sizeof (char *));
3429 return_val[0] = NULL;
3434 /* It is not a quoted string. Break it based on the characters
3435 which are in symbols. */
3438 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3447 sym_text_len = strlen (sym_text);
3449 return_val_size = 100;
3450 return_val_index = 0;
3451 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3452 return_val[0] = NULL;
3454 /* Look through the partial symtabs for all symbols which begin
3455 by matching SYM_TEXT. Add each one that you find to the list. */
3457 ALL_PSYMTABS (objfile, ps)
3459 /* If the psymtab's been read in we'll get it when we search
3460 through the blockvector. */
3464 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3465 psym < (objfile->global_psymbols.list + ps->globals_offset
3466 + ps->n_global_syms);
3469 /* If interrupted, then quit. */
3471 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3474 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3475 psym < (objfile->static_psymbols.list + ps->statics_offset
3476 + ps->n_static_syms);
3480 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3484 /* At this point scan through the misc symbol vectors and add each
3485 symbol you find to the list. Eventually we want to ignore
3486 anything that isn't a text symbol (everything else will be
3487 handled by the psymtab code above). */
3489 ALL_MSYMBOLS (objfile, msymbol)
3492 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3495 /* Search upwards from currently selected frame (so that we can
3496 complete on local vars. */
3498 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3500 if (!BLOCK_SUPERBLOCK (b))
3502 surrounding_static_block = b; /* For elmin of dups */
3505 /* Also catch fields of types defined in this places which match our
3506 text string. Only complete on types visible from current context. */
3508 ALL_BLOCK_SYMBOLS (b, i, sym)
3510 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3511 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3513 struct type *t = SYMBOL_TYPE (sym);
3514 enum type_code c = TYPE_CODE (t);
3516 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3518 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3520 if (TYPE_FIELD_NAME (t, j))
3522 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3523 sym_text, sym_text_len, text, word);
3531 /* Go through the symtabs and check the externs and statics for
3532 symbols which match. */
3534 ALL_SYMTABS (objfile, s)
3537 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3538 ALL_BLOCK_SYMBOLS (b, i, sym)
3540 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3544 ALL_SYMTABS (objfile, s)
3547 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3548 /* Don't do this block twice. */
3549 if (b == surrounding_static_block)
3551 ALL_BLOCK_SYMBOLS (b, i, sym)
3553 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3557 return (return_val);
3560 /* Like make_symbol_completion_list, but returns a list of symbols
3561 defined in a source file FILE. */
3564 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3566 register struct symbol *sym;
3567 register struct symtab *s;
3568 register struct block *b;
3570 /* The symbol we are completing on. Points in same buffer as text. */
3572 /* Length of sym_text. */
3575 /* Now look for the symbol we are supposed to complete on.
3576 FIXME: This should be language-specific. */
3580 char *quote_pos = NULL;
3582 /* First see if this is a quoted string. */
3584 for (p = text; *p != '\0'; ++p)
3586 if (quote_found != '\0')
3588 if (*p == quote_found)
3589 /* Found close quote. */
3591 else if (*p == '\\' && p[1] == quote_found)
3592 /* A backslash followed by the quote character
3593 doesn't end the string. */
3596 else if (*p == '\'' || *p == '"')
3602 if (quote_found == '\'')
3603 /* A string within single quotes can be a symbol, so complete on it. */
3604 sym_text = quote_pos + 1;
3605 else if (quote_found == '"')
3606 /* A double-quoted string is never a symbol, nor does it make sense
3607 to complete it any other way. */
3609 return_val = (char **) xmalloc (sizeof (char *));
3610 return_val[0] = NULL;
3615 /* It is not a quoted string. Break it based on the characters
3616 which are in symbols. */
3619 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3628 sym_text_len = strlen (sym_text);
3630 return_val_size = 10;
3631 return_val_index = 0;
3632 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3633 return_val[0] = NULL;
3635 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3637 s = lookup_symtab (srcfile);
3640 /* Maybe they typed the file with leading directories, while the
3641 symbol tables record only its basename. */
3642 const char *tail = lbasename (srcfile);
3645 s = lookup_symtab (tail);
3648 /* If we have no symtab for that file, return an empty list. */
3650 return (return_val);
3652 /* Go through this symtab and check the externs and statics for
3653 symbols which match. */
3655 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3656 ALL_BLOCK_SYMBOLS (b, i, sym)
3658 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3661 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3662 ALL_BLOCK_SYMBOLS (b, i, sym)
3664 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3667 return (return_val);
3670 /* A helper function for make_source_files_completion_list. It adds
3671 another file name to a list of possible completions, growing the
3672 list as necessary. */
3675 add_filename_to_list (const char *fname, char *text, char *word,
3676 char ***list, int *list_used, int *list_alloced)
3679 size_t fnlen = strlen (fname);
3681 if (*list_used + 1 >= *list_alloced)
3684 *list = (char **) xrealloc ((char *) *list,
3685 *list_alloced * sizeof (char *));
3690 /* Return exactly fname. */
3691 new = xmalloc (fnlen + 5);
3692 strcpy (new, fname);
3694 else if (word > text)
3696 /* Return some portion of fname. */
3697 new = xmalloc (fnlen + 5);
3698 strcpy (new, fname + (word - text));
3702 /* Return some of TEXT plus fname. */
3703 new = xmalloc (fnlen + (text - word) + 5);
3704 strncpy (new, word, text - word);
3705 new[text - word] = '\0';
3706 strcat (new, fname);
3708 (*list)[*list_used] = new;
3709 (*list)[++*list_used] = NULL;
3713 not_interesting_fname (const char *fname)
3715 static const char *illegal_aliens[] = {
3716 "_globals_", /* inserted by coff_symtab_read */
3721 for (i = 0; illegal_aliens[i]; i++)
3723 if (strcmp (fname, illegal_aliens[i]) == 0)
3729 /* Return a NULL terminated array of all source files whose names
3730 begin with matching TEXT. The file names are looked up in the
3731 symbol tables of this program. If the answer is no matchess, then
3732 the return value is an array which contains only a NULL pointer. */
3735 make_source_files_completion_list (char *text, char *word)
3737 register struct symtab *s;
3738 register struct partial_symtab *ps;
3739 register struct objfile *objfile;
3741 int list_alloced = 1;
3743 size_t text_len = strlen (text);
3744 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3745 const char *base_name;
3749 if (!have_full_symbols () && !have_partial_symbols ())
3752 ALL_SYMTABS (objfile, s)
3754 if (not_interesting_fname (s->filename))
3756 if (!filename_seen (s->filename, 1, &first)
3757 #if HAVE_DOS_BASED_FILE_SYSTEM
3758 && strncasecmp (s->filename, text, text_len) == 0
3760 && strncmp (s->filename, text, text_len) == 0
3764 /* This file matches for a completion; add it to the current
3766 add_filename_to_list (s->filename, text, word,
3767 &list, &list_used, &list_alloced);
3771 /* NOTE: We allow the user to type a base name when the
3772 debug info records leading directories, but not the other
3773 way around. This is what subroutines of breakpoint
3774 command do when they parse file names. */
3775 base_name = lbasename (s->filename);
3776 if (base_name != s->filename
3777 && !filename_seen (base_name, 1, &first)
3778 #if HAVE_DOS_BASED_FILE_SYSTEM
3779 && strncasecmp (base_name, text, text_len) == 0
3781 && strncmp (base_name, text, text_len) == 0
3784 add_filename_to_list (base_name, text, word,
3785 &list, &list_used, &list_alloced);
3789 ALL_PSYMTABS (objfile, ps)
3791 if (not_interesting_fname (ps->filename))
3795 if (!filename_seen (ps->filename, 1, &first)
3796 #if HAVE_DOS_BASED_FILE_SYSTEM
3797 && strncasecmp (ps->filename, text, text_len) == 0
3799 && strncmp (ps->filename, text, text_len) == 0
3803 /* This file matches for a completion; add it to the
3804 current list of matches. */
3805 add_filename_to_list (ps->filename, text, word,
3806 &list, &list_used, &list_alloced);
3811 base_name = lbasename (ps->filename);
3812 if (base_name != ps->filename
3813 && !filename_seen (base_name, 1, &first)
3814 #if HAVE_DOS_BASED_FILE_SYSTEM
3815 && strncasecmp (base_name, text, text_len) == 0
3817 && strncmp (base_name, text, text_len) == 0
3820 add_filename_to_list (base_name, text, word,
3821 &list, &list_used, &list_alloced);
3829 /* Determine if PC is in the prologue of a function. The prologue is the area
3830 between the first instruction of a function, and the first executable line.
3831 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3833 If non-zero, func_start is where we think the prologue starts, possibly
3834 by previous examination of symbol table information.
3838 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
3840 struct symtab_and_line sal;
3841 CORE_ADDR func_addr, func_end;
3843 /* We have several sources of information we can consult to figure
3845 - Compilers usually emit line number info that marks the prologue
3846 as its own "source line". So the ending address of that "line"
3847 is the end of the prologue. If available, this is the most
3849 - The minimal symbols and partial symbols, which can usually tell
3850 us the starting and ending addresses of a function.
3851 - If we know the function's start address, we can call the
3852 architecture-defined SKIP_PROLOGUE function to analyze the
3853 instruction stream and guess where the prologue ends.
3854 - Our `func_start' argument; if non-zero, this is the caller's
3855 best guess as to the function's entry point. At the time of
3856 this writing, handle_inferior_event doesn't get this right, so
3857 it should be our last resort. */
3859 /* Consult the partial symbol table, to find which function
3861 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3863 CORE_ADDR prologue_end;
3865 /* We don't even have minsym information, so fall back to using
3866 func_start, if given. */
3868 return 1; /* We *might* be in a prologue. */
3870 prologue_end = SKIP_PROLOGUE (func_start);
3872 return func_start <= pc && pc < prologue_end;
3875 /* If we have line number information for the function, that's
3876 usually pretty reliable. */
3877 sal = find_pc_line (func_addr, 0);
3879 /* Now sal describes the source line at the function's entry point,
3880 which (by convention) is the prologue. The end of that "line",
3881 sal.end, is the end of the prologue.
3883 Note that, for functions whose source code is all on a single
3884 line, the line number information doesn't always end up this way.
3885 So we must verify that our purported end-of-prologue address is
3886 *within* the function, not at its start or end. */
3888 || sal.end <= func_addr
3889 || func_end <= sal.end)
3891 /* We don't have any good line number info, so use the minsym
3892 information, together with the architecture-specific prologue
3894 CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr);
3896 return func_addr <= pc && pc < prologue_end;
3899 /* We have line number info, and it looks good. */
3900 return func_addr <= pc && pc < sal.end;
3904 /* Begin overload resolution functions */
3907 remove_params (const char *demangled_name)
3913 if (demangled_name == NULL)
3916 /* First find the end of the arg list. */
3917 argp = strrchr (demangled_name, ')');
3921 /* Back up to the beginning. */
3924 while (argp-- > demangled_name)
3928 else if (*argp == '(')
3937 internal_error (__FILE__, __LINE__,
3938 "bad demangled name %s\n", demangled_name);
3939 while (argp[-1] == ' ' && argp > demangled_name)
3942 new_name = xmalloc (argp - demangled_name + 1);
3943 memcpy (new_name, demangled_name, argp - demangled_name);
3944 new_name[argp - demangled_name] = '\0';
3948 /* Helper routine for make_symbol_completion_list. */
3950 static int sym_return_val_size;
3951 static int sym_return_val_index;
3952 static struct symbol **sym_return_val;
3954 /* Test to see if the symbol specified by SYMNAME (which is already
3955 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3956 characters. If so, add it to the current completion list. */
3959 overload_list_add_symbol (struct symbol *sym, char *oload_name)
3965 /* If there is no type information, we can't do anything, so skip */
3966 if (SYMBOL_TYPE (sym) == NULL)
3969 /* skip any symbols that we've already considered. */
3970 for (i = 0; i < sym_return_val_index; ++i)
3971 if (!strcmp (DEPRECATED_SYMBOL_NAME (sym), DEPRECATED_SYMBOL_NAME (sym_return_val[i])))
3974 /* Get the demangled name without parameters */
3975 sym_name = remove_params (SYMBOL_DEMANGLED_NAME (sym));
3979 /* skip symbols that cannot match */
3980 if (strcmp (sym_name, oload_name) != 0)
3988 /* We have a match for an overload instance, so add SYM to the current list
3989 * of overload instances */
3990 if (sym_return_val_index + 3 > sym_return_val_size)
3992 newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *);
3993 sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize);
3995 sym_return_val[sym_return_val_index++] = sym;
3996 sym_return_val[sym_return_val_index] = NULL;
3999 /* Return a null-terminated list of pointers to function symbols that
4000 * match name of the supplied symbol FSYM.
4001 * This is used in finding all overloaded instances of a function name.
4002 * This has been modified from make_symbol_completion_list. */
4006 make_symbol_overload_list (struct symbol *fsym)
4008 register struct symbol *sym;
4009 register struct symtab *s;
4010 register struct partial_symtab *ps;
4011 register struct objfile *objfile;
4012 register struct block *b, *surrounding_static_block = 0;
4014 /* The name we are completing on. */
4015 char *oload_name = NULL;
4016 /* Length of name. */
4017 int oload_name_len = 0;
4019 /* Look for the symbol we are supposed to complete on. */
4021 oload_name = remove_params (SYMBOL_DEMANGLED_NAME (fsym));
4024 sym_return_val_size = 1;
4025 sym_return_val = (struct symbol **) xmalloc (2 * sizeof (struct symbol *));
4026 sym_return_val[0] = fsym;
4027 sym_return_val[1] = NULL;
4029 return sym_return_val;
4031 oload_name_len = strlen (oload_name);
4033 sym_return_val_size = 100;
4034 sym_return_val_index = 0;
4035 sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *));
4036 sym_return_val[0] = NULL;
4038 /* Read in all partial symtabs containing a partial symbol named
4041 ALL_PSYMTABS (objfile, ps)
4043 struct partial_symbol **psym;
4045 /* If the psymtab's been read in we'll get it when we search
4046 through the blockvector. */
4050 if ((lookup_partial_symbol (ps, oload_name, NULL, 1, VAR_NAMESPACE)
4052 || (lookup_partial_symbol (ps, oload_name, NULL, 0, VAR_NAMESPACE)
4054 PSYMTAB_TO_SYMTAB (ps);
4057 /* Search upwards from currently selected frame (so that we can
4058 complete on local vars. */
4060 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
4062 if (!BLOCK_SUPERBLOCK (b))
4064 surrounding_static_block = b; /* For elimination of dups */
4067 /* Also catch fields of types defined in this places which match our
4068 text string. Only complete on types visible from current context. */
4070 ALL_BLOCK_SYMBOLS (b, i, sym)
4072 overload_list_add_symbol (sym, oload_name);
4076 /* Go through the symtabs and check the externs and statics for
4077 symbols which match. */
4079 ALL_SYMTABS (objfile, s)
4082 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4083 ALL_BLOCK_SYMBOLS (b, i, sym)
4085 overload_list_add_symbol (sym, oload_name);
4089 ALL_SYMTABS (objfile, s)
4092 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
4093 /* Don't do this block twice. */
4094 if (b == surrounding_static_block)
4096 ALL_BLOCK_SYMBOLS (b, i, sym)
4098 overload_list_add_symbol (sym, oload_name);
4104 return (sym_return_val);
4107 /* End of overload resolution functions */
4109 struct symtabs_and_lines
4110 decode_line_spec (char *string, int funfirstline)
4112 struct symtabs_and_lines sals;
4113 struct symtab_and_line cursal;
4116 error ("Empty line specification.");
4118 /* We use whatever is set as the current source line. We do not try
4119 and get a default or it will recursively call us! */
4120 cursal = get_current_source_symtab_and_line ();
4122 sals = decode_line_1 (&string, funfirstline,
4123 cursal.symtab, cursal.line,
4127 error ("Junk at end of line specification: %s", string);
4132 static char *name_of_main;
4135 set_main_name (const char *name)
4137 if (name_of_main != NULL)
4139 xfree (name_of_main);
4140 name_of_main = NULL;
4144 name_of_main = xstrdup (name);
4151 if (name_of_main != NULL)
4152 return name_of_main;
4159 _initialize_symtab (void)
4161 add_info ("variables", variables_info,
4162 "All global and static variable names, or those matching REGEXP.");
4164 add_com ("whereis", class_info, variables_info,
4165 "All global and static variable names, or those matching REGEXP.");
4167 add_info ("functions", functions_info,
4168 "All function names, or those matching REGEXP.");
4171 /* FIXME: This command has at least the following problems:
4172 1. It prints builtin types (in a very strange and confusing fashion).
4173 2. It doesn't print right, e.g. with
4174 typedef struct foo *FOO
4175 type_print prints "FOO" when we want to make it (in this situation)
4176 print "struct foo *".
4177 I also think "ptype" or "whatis" is more likely to be useful (but if
4178 there is much disagreement "info types" can be fixed). */
4179 add_info ("types", types_info,
4180 "All type names, or those matching REGEXP.");
4182 add_info ("sources", sources_info,
4183 "Source files in the program.");
4185 add_com ("rbreak", class_breakpoint, rbreak_command,
4186 "Set a breakpoint for all functions matching REGEXP.");
4190 add_com ("lf", class_info, sources_info, "Source files in the program");
4191 add_com ("lg", class_info, variables_info,
4192 "All global and static variable names, or those matching REGEXP.");
4195 /* Initialize the one built-in type that isn't language dependent... */
4196 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4197 "<unknown type>", (struct objfile *) NULL);