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 Free Software
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 */
44 #include "gdb_obstack.h"
46 #include <sys/types.h>
48 #include "gdb_string.h"
53 /* Prototypes for local functions */
55 static void completion_list_add_name (char *, char *, int, char *, char *);
57 static void rbreak_command (char *, int);
59 static void types_info (char *, int);
61 static void functions_info (char *, int);
63 static void variables_info (char *, int);
65 static void sources_info (char *, int);
67 static void output_source_filename (char *, int *);
69 static int find_line_common (struct linetable *, int, int *);
71 /* This one is used by linespec.c */
73 char *operator_chars (char *p, char **end);
75 static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
79 static struct symbol *lookup_symbol_aux (const char *name,
80 const char *mangled_name,
81 const struct block *block,
82 const namespace_enum namespace,
83 int *is_a_field_of_this,
84 struct symtab **symtab);
87 static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr);
89 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
90 /* Signals the presence of objects compiled by HP compilers */
91 int hp_som_som_object_present = 0;
93 static void fixup_section (struct general_symbol_info *, struct objfile *);
95 static int file_matches (char *, char **, int);
97 static void print_symbol_info (namespace_enum,
98 struct symtab *, struct symbol *, int, char *);
100 static void print_msymbol_info (struct minimal_symbol *);
102 static void symtab_symbol_info (char *, namespace_enum, int);
104 static void overload_list_add_symbol (struct symbol *sym, char *oload_name);
106 void _initialize_symtab (void);
110 /* The single non-language-specific builtin type */
111 struct type *builtin_type_error;
113 /* Block in which the most recently searched-for symbol was found.
114 Might be better to make this a parameter to lookup_symbol and
117 const struct block *block_found;
119 /* Check for a symtab of a specific name; first in symtabs, then in
120 psymtabs. *If* there is no '/' in the name, a match after a '/'
121 in the symtab filename will also work. */
124 lookup_symtab (const char *name)
126 register struct symtab *s;
127 register struct partial_symtab *ps;
128 register struct objfile *objfile;
129 char *real_path = NULL;
130 char *full_path = NULL;
132 /* Here we are interested in canonicalizing an absolute path, not
133 absolutizing a relative path. */
134 if (IS_ABSOLUTE_PATH (name))
136 full_path = xfullpath (name);
137 make_cleanup (xfree, full_path);
138 real_path = gdb_realpath (name);
139 make_cleanup (xfree, real_path);
144 /* First, search for an exact match */
146 ALL_SYMTABS (objfile, s)
148 if (FILENAME_CMP (name, s->filename) == 0)
153 /* If the user gave us an absolute path, try to find the file in
154 this symtab and use its absolute path. */
156 if (full_path != NULL)
158 const char *fp = symtab_to_filename (s);
159 if (FILENAME_CMP (full_path, fp) == 0)
165 if (real_path != NULL)
167 char *rp = gdb_realpath (symtab_to_filename (s));
168 make_cleanup (xfree, rp);
169 if (FILENAME_CMP (real_path, rp) == 0)
176 /* Now, search for a matching tail (only if name doesn't have any dirs) */
178 if (lbasename (name) == name)
179 ALL_SYMTABS (objfile, s)
181 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
185 /* Same search rules as above apply here, but now we look thru the
188 ps = lookup_partial_symtab (name);
193 error ("Internal: readin %s pst for `%s' found when no symtab found.",
196 s = PSYMTAB_TO_SYMTAB (ps);
201 /* At this point, we have located the psymtab for this file, but
202 the conversion to a symtab has failed. This usually happens
203 when we are looking up an include file. In this case,
204 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
205 been created. So, we need to run through the symtabs again in
206 order to find the file.
207 XXX - This is a crock, and should be fixed inside of the the
208 symbol parsing routines. */
212 /* Lookup the partial symbol table of a source file named NAME.
213 *If* there is no '/' in the name, a match after a '/'
214 in the psymtab filename will also work. */
216 struct partial_symtab *
217 lookup_partial_symtab (const char *name)
219 register struct partial_symtab *pst;
220 register struct objfile *objfile;
221 char *full_path = NULL;
222 char *real_path = NULL;
224 /* Here we are interested in canonicalizing an absolute path, not
225 absolutizing a relative path. */
226 if (IS_ABSOLUTE_PATH (name))
228 full_path = xfullpath (name);
229 make_cleanup (xfree, full_path);
230 real_path = gdb_realpath (name);
231 make_cleanup (xfree, real_path);
234 ALL_PSYMTABS (objfile, pst)
236 if (FILENAME_CMP (name, pst->filename) == 0)
241 /* If the user gave us an absolute path, try to find the file in
242 this symtab and use its absolute path. */
243 if (full_path != NULL)
245 if (pst->fullname == NULL)
246 source_full_path_of (pst->filename, &pst->fullname);
247 if (pst->fullname != NULL
248 && FILENAME_CMP (full_path, pst->fullname) == 0)
254 if (real_path != NULL)
257 if (pst->fullname == NULL)
258 source_full_path_of (pst->filename, &pst->fullname);
259 if (pst->fullname != NULL)
261 rp = gdb_realpath (pst->fullname);
262 make_cleanup (xfree, rp);
264 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
271 /* Now, search for a matching tail (only if name doesn't have any dirs) */
273 if (lbasename (name) == name)
274 ALL_PSYMTABS (objfile, pst)
276 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
283 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
284 full method name, which consist of the class name (from T), the unadorned
285 method name from METHOD_ID, and the signature for the specific overload,
286 specified by SIGNATURE_ID. Note that this function is g++ specific. */
289 gdb_mangle_name (struct type *type, int method_id, int signature_id)
291 int mangled_name_len;
293 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
294 struct fn_field *method = &f[signature_id];
295 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
296 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
297 char *newname = type_name_no_tag (type);
299 /* Does the form of physname indicate that it is the full mangled name
300 of a constructor (not just the args)? */
301 int is_full_physname_constructor;
304 int is_destructor = is_destructor_name (physname);
305 /* Need a new type prefix. */
306 char *const_prefix = method->is_const ? "C" : "";
307 char *volatile_prefix = method->is_volatile ? "V" : "";
309 int len = (newname == NULL ? 0 : strlen (newname));
311 /* Nothing to do if physname already contains a fully mangled v3 abi name
312 or an operator name. */
313 if ((physname[0] == '_' && physname[1] == 'Z')
314 || is_operator_name (field_name))
315 return xstrdup (physname);
317 is_full_physname_constructor = is_constructor_name (physname);
320 is_full_physname_constructor || (newname && STREQ (field_name, newname));
323 is_destructor = (strncmp (physname, "__dt", 4) == 0);
325 if (is_destructor || is_full_physname_constructor)
327 mangled_name = (char *) xmalloc (strlen (physname) + 1);
328 strcpy (mangled_name, physname);
334 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
336 else if (physname[0] == 't' || physname[0] == 'Q')
338 /* The physname for template and qualified methods already includes
340 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
346 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
348 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
349 + strlen (buf) + len + strlen (physname) + 1);
352 mangled_name = (char *) xmalloc (mangled_name_len);
354 mangled_name[0] = '\0';
356 strcpy (mangled_name, field_name);
358 strcat (mangled_name, buf);
359 /* If the class doesn't have a name, i.e. newname NULL, then we just
360 mangle it using 0 for the length of the class. Thus it gets mangled
361 as something starting with `::' rather than `classname::'. */
363 strcat (mangled_name, newname);
365 strcat (mangled_name, physname);
366 return (mangled_name);
370 /* Initialize the language dependent portion of a symbol
371 depending upon the language for the symbol. */
373 symbol_init_language_specific (struct general_symbol_info *gsymbol,
374 enum language language)
376 gsymbol->language = language;
377 if (gsymbol->language == language_cplus
378 || gsymbol->language == language_java)
380 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
382 else if (gsymbol->language == language_objc)
384 gsymbol->language_specific.objc_specific.demangled_name = NULL;
386 /* OBSOLETE else if (SYMBOL_LANGUAGE (symbol) == language_chill) */
388 /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; */
392 memset (&gsymbol->language_specific, 0,
393 sizeof (gsymbol->language_specific));
397 /* Initialize a symbol's mangled name. */
399 /* Try to initialize the demangled name for a symbol, based on the
400 language of that symbol. If the language is set to language_auto,
401 it will attempt to find any demangling algorithm that works and
402 then set the language appropriately. If no demangling of any kind
403 is found, the language is set back to language_unknown, so we can
404 avoid doing this work again the next time we encounter the symbol.
405 Any required space to store the name is obtained from the specified
409 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
410 struct obstack *obstack)
412 char *mangled = gsymbol->name;
413 char *demangled = NULL;
415 if (gsymbol->language == language_unknown)
416 gsymbol->language = language_auto;
417 if (gsymbol->language == language_cplus
418 || gsymbol->language == language_auto)
421 cplus_demangle (gsymbol->name, DMGL_PARAMS | DMGL_ANSI);
422 if (demangled != NULL)
424 gsymbol->language = language_cplus;
425 gsymbol->language_specific.cplus_specific.demangled_name =
426 obsavestring (demangled, strlen (demangled), obstack);
431 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
434 if (gsymbol->language == language_java)
437 cplus_demangle (gsymbol->name,
438 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
439 if (demangled != NULL)
441 gsymbol->language = language_java;
442 gsymbol->language_specific.cplus_specific.demangled_name =
443 obsavestring (demangled, strlen (demangled), obstack);
448 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
452 /* OBSOLETE if (demangled == NULL */
453 /* OBSOLETE && (gsymbol->language == language_chill */
454 /* OBSOLETE || gsymbol->language == language_auto)) */
456 /* OBSOLETE demangled = */
457 /* OBSOLETE chill_demangle (gsymbol->name); */
458 /* OBSOLETE if (demangled != NULL) */
460 /* OBSOLETE gsymbol->language = language_chill; */
461 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = */
462 /* OBSOLETE obsavestring (demangled, strlen (demangled), obstack); */
463 /* OBSOLETE xfree (demangled); */
467 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = NULL; */
473 /* Return the demangled name for a symbol based on the language for
474 that symbol. If no demangled name exists, return NULL. */
476 symbol_demangled_name (struct general_symbol_info *gsymbol)
478 if (gsymbol->language == language_cplus
479 || gsymbol->language == language_java)
480 return gsymbol->language_specific.cplus_specific.demangled_name;
482 else if (gsymbol->language == language_objc)
483 return gsymbol->language_specific.objc_specific.demangled_name;
488 /* OBSOLETE (SYMBOL_LANGUAGE (symbol) == language_chill */
489 /* OBSOLETE ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) */
494 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
496 struct partial_symtab *
497 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
499 register struct partial_symtab *pst;
500 register struct objfile *objfile;
501 struct minimal_symbol *msymbol;
503 /* If we know that this is not a text address, return failure. This is
504 necessary because we loop based on texthigh and textlow, which do
505 not include the data ranges. */
506 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
508 && (msymbol->type == mst_data
509 || msymbol->type == mst_bss
510 || msymbol->type == mst_abs
511 || msymbol->type == mst_file_data
512 || msymbol->type == mst_file_bss))
515 ALL_PSYMTABS (objfile, pst)
517 if (pc >= pst->textlow && pc < pst->texthigh)
519 struct partial_symtab *tpst;
521 /* An objfile that has its functions reordered might have
522 many partial symbol tables containing the PC, but
523 we want the partial symbol table that contains the
524 function containing the PC. */
525 if (!(objfile->flags & OBJF_REORDERED) &&
526 section == 0) /* can't validate section this way */
532 for (tpst = pst; tpst != NULL; tpst = tpst->next)
534 if (pc >= tpst->textlow && pc < tpst->texthigh)
536 struct partial_symbol *p;
538 p = find_pc_sect_psymbol (tpst, pc, section);
540 && SYMBOL_VALUE_ADDRESS (p)
541 == SYMBOL_VALUE_ADDRESS (msymbol))
551 /* Find which partial symtab contains PC. Return 0 if none.
552 Backward compatibility, no section */
554 struct partial_symtab *
555 find_pc_psymtab (CORE_ADDR pc)
557 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
560 /* Find which partial symbol within a psymtab matches PC and SECTION.
561 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
563 struct partial_symbol *
564 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
567 struct partial_symbol *best = NULL, *p, **pp;
571 psymtab = find_pc_sect_psymtab (pc, section);
575 /* Cope with programs that start at address 0 */
576 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
578 /* Search the global symbols as well as the static symbols, so that
579 find_pc_partial_function doesn't use a minimal symbol and thus
580 cache a bad endaddr. */
581 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
582 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
583 < psymtab->n_global_syms);
587 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
588 && SYMBOL_CLASS (p) == LOC_BLOCK
589 && pc >= SYMBOL_VALUE_ADDRESS (p)
590 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
591 || (psymtab->textlow == 0
592 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
594 if (section) /* match on a specific section */
596 fixup_psymbol_section (p, psymtab->objfile);
597 if (SYMBOL_BFD_SECTION (p) != section)
600 best_pc = SYMBOL_VALUE_ADDRESS (p);
605 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
606 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
607 < psymtab->n_static_syms);
611 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
612 && SYMBOL_CLASS (p) == LOC_BLOCK
613 && pc >= SYMBOL_VALUE_ADDRESS (p)
614 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
615 || (psymtab->textlow == 0
616 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
618 if (section) /* match on a specific section */
620 fixup_psymbol_section (p, psymtab->objfile);
621 if (SYMBOL_BFD_SECTION (p) != section)
624 best_pc = SYMBOL_VALUE_ADDRESS (p);
632 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
633 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
635 struct partial_symbol *
636 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
638 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
641 /* Debug symbols usually don't have section information. We need to dig that
642 out of the minimal symbols and stash that in the debug symbol. */
645 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
647 struct minimal_symbol *msym;
648 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
652 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
653 ginfo->section = SYMBOL_SECTION (msym);
658 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
663 if (SYMBOL_BFD_SECTION (sym))
666 fixup_section (&sym->ginfo, objfile);
671 struct partial_symbol *
672 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
677 if (SYMBOL_BFD_SECTION (psym))
680 fixup_section (&psym->ginfo, objfile);
685 /* Find the definition for a specified symbol name NAME
686 in namespace NAMESPACE, visible from lexical block BLOCK.
687 Returns the struct symbol pointer, or zero if no symbol is found.
688 If SYMTAB is non-NULL, store the symbol table in which the
689 symbol was found there, or NULL if not found.
690 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
691 NAME is a field of the current implied argument `this'. If so set
692 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
693 BLOCK_FOUND is set to the block in which NAME is found (in the case of
694 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
696 /* This function has a bunch of loops in it and it would seem to be
697 attractive to put in some QUIT's (though I'm not really sure
698 whether it can run long enough to be really important). But there
699 are a few calls for which it would appear to be bad news to quit
700 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
701 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
702 code below which can error(), but that probably doesn't affect
703 these calls since they are looking for a known variable and thus
704 can probably assume it will never hit the C++ code). */
707 lookup_symbol (const char *name, const struct block *block,
708 const namespace_enum namespace, int *is_a_field_of_this,
709 struct symtab **symtab)
711 char *demangled_name = NULL;
712 const char *modified_name = NULL;
713 const char *mangled_name = NULL;
714 int needtofreename = 0;
715 struct symbol *returnval;
717 modified_name = name;
719 /* If we are using C++ language, demangle the name before doing a lookup, so
720 we can always binary search. */
721 if (current_language->la_language == language_cplus)
723 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
727 modified_name = demangled_name;
732 if (case_sensitivity == case_sensitive_off)
738 copy = (char *) alloca (len + 1);
739 for (i= 0; i < len; i++)
740 copy[i] = tolower (name[i]);
742 modified_name = copy;
745 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
746 namespace, is_a_field_of_this, symtab);
748 xfree (demangled_name);
753 static struct symbol *
754 lookup_symbol_aux (const char *name, const char *mangled_name,
755 const struct block *block, const namespace_enum namespace,
756 int *is_a_field_of_this, struct symtab **symtab)
758 register struct symbol *sym;
759 register struct symtab *s = NULL;
760 register struct partial_symtab *ps;
761 register struct blockvector *bv;
762 register struct objfile *objfile = NULL;
763 register struct block *b;
764 register struct minimal_symbol *msymbol;
767 /* Search specified block and its superiors. */
771 sym = lookup_block_symbol (block, name, mangled_name, namespace);
777 /* Search the list of symtabs for one which contains the
778 address of the start of this block. */
779 ALL_SYMTABS (objfile, s)
781 bv = BLOCKVECTOR (s);
782 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
783 if (BLOCK_START (b) <= BLOCK_START (block)
784 && BLOCK_END (b) > BLOCK_START (block))
791 return fixup_symbol_section (sym, objfile);
793 block = BLOCK_SUPERBLOCK (block);
796 /* FIXME: this code is never executed--block is always NULL at this
797 point. What is it trying to do, anyway? We already should have
798 checked the STATIC_BLOCK above (it is the superblock of top-level
799 blocks). Why is VAR_NAMESPACE special-cased? */
800 /* Don't need to mess with the psymtabs; if we have a block,
801 that file is read in. If we don't, then we deal later with
802 all the psymtab stuff that needs checking. */
803 /* Note (RT): The following never-executed code looks unnecessary to me also.
804 * If we change the code to use the original (passed-in)
805 * value of 'block', we could cause it to execute, but then what
806 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
807 * 'block' was already searched by the above code. And the STATIC_BLOCK's
808 * of *other* symtabs (those files not containing 'block' lexically)
809 * should not contain 'block' address-wise. So we wouldn't expect this
810 * code to find any 'sym''s that were not found above. I vote for
811 * deleting the following paragraph of code.
813 if (namespace == VAR_NAMESPACE && block != NULL)
816 /* Find the right symtab. */
817 ALL_SYMTABS (objfile, s)
819 bv = BLOCKVECTOR (s);
820 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
821 if (BLOCK_START (b) <= BLOCK_START (block)
822 && BLOCK_END (b) > BLOCK_START (block))
824 sym = lookup_block_symbol (b, name, mangled_name, VAR_NAMESPACE);
830 return fixup_symbol_section (sym, objfile);
837 /* C++: If requested to do so by the caller,
838 check to see if NAME is a field of `this'. */
839 if (is_a_field_of_this)
841 struct value *v = value_of_this (0);
843 *is_a_field_of_this = 0;
844 if (v && check_field (v, name))
846 *is_a_field_of_this = 1;
853 /* Now search all global blocks. Do the symtab's first, then
854 check the psymtab's. If a psymtab indicates the existence
855 of the desired name as a global, then do psymtab-to-symtab
856 conversion on the fly and return the found symbol. */
858 ALL_SYMTABS (objfile, s)
860 bv = BLOCKVECTOR (s);
861 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
862 sym = lookup_block_symbol (block, name, mangled_name, namespace);
868 return fixup_symbol_section (sym, objfile);
874 /* Check for the possibility of the symbol being a function or
875 a mangled variable that is stored in one of the minimal symbol tables.
876 Eventually, all global symbols might be resolved in this way. */
878 if (namespace == VAR_NAMESPACE)
880 msymbol = lookup_minimal_symbol (name, NULL, NULL);
883 s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
884 SYMBOL_BFD_SECTION (msymbol));
887 /* This is a function which has a symtab for its address. */
888 bv = BLOCKVECTOR (s);
889 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
891 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
892 `name' argument to lookup_block_symbol. But the name
893 of a minimal symbol is always mangled, so that seems
894 to be clearly the wrong thing to pass as the
896 sym = lookup_block_symbol (block, name, mangled_name, namespace);
897 /* We kept static functions in minimal symbol table as well as
898 in static scope. We want to find them in the symbol table. */
901 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
902 sym = lookup_block_symbol (block, name,
903 mangled_name, namespace);
906 /* sym == 0 if symbol was found in the minimal symbol table
907 but not in the symtab.
908 Return 0 to use the msymbol definition of "foo_".
910 This happens for Fortran "foo_" symbols,
911 which are "foo" in the symtab.
913 This can also happen if "asm" is used to make a
914 regular symbol but not a debugging symbol, e.g.
921 return fixup_symbol_section (sym, objfile);
923 else if (MSYMBOL_TYPE (msymbol) != mst_text
924 && MSYMBOL_TYPE (msymbol) != mst_file_text
925 && !STREQ (name, SYMBOL_NAME (msymbol)))
927 /* This is a mangled variable, look it up by its
929 return lookup_symbol_aux (SYMBOL_NAME (msymbol), mangled_name, block,
930 namespace, is_a_field_of_this, symtab);
932 /* There are no debug symbols for this file, or we are looking
933 for an unmangled variable.
934 Try to find a matching static symbol below. */
940 ALL_PSYMTABS (objfile, ps)
942 if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace))
944 s = PSYMTAB_TO_SYMTAB (ps);
945 bv = BLOCKVECTOR (s);
946 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
947 sym = lookup_block_symbol (block, name, mangled_name, namespace);
950 /* This shouldn't be necessary, but as a last resort
951 * try looking in the statics even though the psymtab
952 * claimed the symbol was global. It's possible that
953 * the psymtab gets it wrong in some cases.
955 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
956 sym = lookup_block_symbol (block, name, mangled_name, namespace);
958 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
959 %s may be an inlined function, or may be a template function\n\
960 (if a template, try specifying an instantiation: %s<type>).",
961 name, ps->filename, name, name);
965 return fixup_symbol_section (sym, objfile);
969 /* Now search all static file-level symbols.
970 Not strictly correct, but more useful than an error.
971 Do the symtabs first, then check the psymtabs.
972 If a psymtab indicates the existence
973 of the desired name as a file-level static, then do psymtab-to-symtab
974 conversion on the fly and return the found symbol. */
976 ALL_SYMTABS (objfile, s)
978 bv = BLOCKVECTOR (s);
979 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
980 sym = lookup_block_symbol (block, name, mangled_name, namespace);
986 return fixup_symbol_section (sym, objfile);
990 ALL_PSYMTABS (objfile, ps)
992 if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace))
994 s = PSYMTAB_TO_SYMTAB (ps);
995 bv = BLOCKVECTOR (s);
996 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
997 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1000 /* This shouldn't be necessary, but as a last resort
1001 * try looking in the globals even though the psymtab
1002 * claimed the symbol was static. It's possible that
1003 * the psymtab gets it wrong in some cases.
1005 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1006 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1008 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1009 %s may be an inlined function, or may be a template function\n\
1010 (if a template, try specifying an instantiation: %s<type>).",
1011 name, ps->filename, name, name);
1015 return fixup_symbol_section (sym, objfile);
1021 /* Check for the possibility of the symbol being a function or
1022 a global variable that is stored in one of the minimal symbol tables.
1023 The "minimal symbol table" is built from linker-supplied info.
1025 RT: I moved this check to last, after the complete search of
1026 the global (p)symtab's and static (p)symtab's. For HP-generated
1027 symbol tables, this check was causing a premature exit from
1028 lookup_symbol with NULL return, and thus messing up symbol lookups
1029 of things like "c::f". It seems to me a check of the minimal
1030 symbol table ought to be a last resort in any case. I'm vaguely
1031 worried about the comment below which talks about FORTRAN routines "foo_"
1032 though... is it saying we need to do the "minsym" check before
1033 the static check in this case?
1036 if (namespace == VAR_NAMESPACE)
1038 msymbol = lookup_minimal_symbol (name, NULL, NULL);
1039 if (msymbol != NULL)
1041 /* OK, we found a minimal symbol in spite of not
1042 * finding any symbol. There are various possible
1043 * explanations for this. One possibility is the symbol
1044 * exists in code not compiled -g. Another possibility
1045 * is that the 'psymtab' isn't doing its job.
1046 * A third possibility, related to #2, is that we were confused
1047 * by name-mangling. For instance, maybe the psymtab isn't
1048 * doing its job because it only know about demangled
1049 * names, but we were given a mangled name...
1052 /* We first use the address in the msymbol to try to
1053 * locate the appropriate symtab. Note that find_pc_symtab()
1054 * has a side-effect of doing psymtab-to-symtab expansion,
1055 * for the found symtab.
1057 s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol));
1060 bv = BLOCKVECTOR (s);
1061 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1062 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
1063 `name' argument to lookup_block_symbol. But the name
1064 of a minimal symbol is always mangled, so that seems
1065 to be clearly the wrong thing to pass as the
1067 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1068 /* We kept static functions in minimal symbol table as well as
1069 in static scope. We want to find them in the symbol table. */
1072 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1073 sym = lookup_block_symbol (block, name,
1074 mangled_name, namespace);
1076 /* If we found one, return it */
1084 /* If we get here with sym == 0, the symbol was
1085 found in the minimal symbol table
1086 but not in the symtab.
1087 Fall through and return 0 to use the msymbol
1088 definition of "foo_".
1089 (Note that outer code generally follows up a call
1090 to this routine with a call to lookup_minimal_symbol(),
1091 so a 0 return means we'll just flow into that other routine).
1093 This happens for Fortran "foo_" symbols,
1094 which are "foo" in the symtab.
1096 This can also happen if "asm" is used to make a
1097 regular symbol but not a debugging symbol, e.g.
1098 asm(".globl _main");
1103 /* If the lookup-by-address fails, try repeating the
1104 * entire lookup process with the symbol name from
1105 * the msymbol (if different from the original symbol name).
1107 else if (MSYMBOL_TYPE (msymbol) != mst_text
1108 && MSYMBOL_TYPE (msymbol) != mst_file_text
1109 && !STREQ (name, SYMBOL_NAME (msymbol)))
1111 return lookup_symbol_aux (SYMBOL_NAME (msymbol), mangled_name,
1112 block, namespace, is_a_field_of_this,
1125 /* Look, in partial_symtab PST, for symbol NAME. Check the global
1126 symbols if GLOBAL, the static symbols if not */
1128 static struct partial_symbol *
1129 lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global,
1130 namespace_enum namespace)
1132 struct partial_symbol *temp;
1133 struct partial_symbol **start, **psym;
1134 struct partial_symbol **top, **bottom, **center;
1135 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1136 int do_linear_search = 1;
1143 pst->objfile->global_psymbols.list + pst->globals_offset :
1144 pst->objfile->static_psymbols.list + pst->statics_offset);
1146 if (global) /* This means we can use a binary search. */
1148 do_linear_search = 0;
1150 /* Binary search. This search is guaranteed to end with center
1151 pointing at the earliest partial symbol with the correct
1152 name. At that point *all* partial symbols with that name
1153 will be checked against the correct namespace. */
1156 top = start + length - 1;
1157 while (top > bottom)
1159 center = bottom + (top - bottom) / 2;
1160 if (!(center < top))
1161 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1162 if (!do_linear_search
1163 && (SYMBOL_LANGUAGE (*center) == language_java))
1165 do_linear_search = 1;
1167 if (strcmp (SYMBOL_SOURCE_NAME (*center), name) >= 0)
1173 bottom = center + 1;
1176 if (!(top == bottom))
1177 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1179 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1180 we don't have to force a linear search on C++. Probably holds true
1181 for JAVA as well, no way to check.*/
1182 while (SYMBOL_MATCHES_NAME (*top,name))
1184 if (SYMBOL_NAMESPACE (*top) == namespace)
1192 /* Can't use a binary search or else we found during the binary search that
1193 we should also do a linear search. */
1195 if (do_linear_search)
1197 for (psym = start; psym < start + length; psym++)
1199 if (namespace == SYMBOL_NAMESPACE (*psym))
1201 if (SYMBOL_MATCHES_NAME (*psym, name))
1212 /* Look up a type named NAME in the struct_namespace. The type returned
1213 must not be opaque -- i.e., must have at least one field defined
1215 This code was modelled on lookup_symbol -- the parts not relevant to looking
1216 up types were just left out. In particular it's assumed here that types
1217 are available in struct_namespace and only at file-static or global blocks. */
1221 lookup_transparent_type (const char *name)
1223 register struct symbol *sym;
1224 register struct symtab *s = NULL;
1225 register struct partial_symtab *ps;
1226 struct blockvector *bv;
1227 register struct objfile *objfile;
1228 register struct block *block;
1230 /* Now search all the global symbols. Do the symtab's first, then
1231 check the psymtab's. If a psymtab indicates the existence
1232 of the desired name as a global, then do psymtab-to-symtab
1233 conversion on the fly and return the found symbol. */
1235 ALL_SYMTABS (objfile, s)
1237 bv = BLOCKVECTOR (s);
1238 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1239 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1240 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1242 return SYMBOL_TYPE (sym);
1246 ALL_PSYMTABS (objfile, ps)
1248 if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE))
1250 s = PSYMTAB_TO_SYMTAB (ps);
1251 bv = BLOCKVECTOR (s);
1252 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1253 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1256 /* This shouldn't be necessary, but as a last resort
1257 * try looking in the statics even though the psymtab
1258 * claimed the symbol was global. It's possible that
1259 * the psymtab gets it wrong in some cases.
1261 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1262 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1264 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1265 %s may be an inlined function, or may be a template function\n\
1266 (if a template, try specifying an instantiation: %s<type>).",
1267 name, ps->filename, name, name);
1269 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1270 return SYMBOL_TYPE (sym);
1274 /* Now search the static file-level symbols.
1275 Not strictly correct, but more useful than an error.
1276 Do the symtab's first, then
1277 check the psymtab's. If a psymtab indicates the existence
1278 of the desired name as a file-level static, then do psymtab-to-symtab
1279 conversion on the fly and return the found symbol.
1282 ALL_SYMTABS (objfile, s)
1284 bv = BLOCKVECTOR (s);
1285 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1286 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1287 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1289 return SYMBOL_TYPE (sym);
1293 ALL_PSYMTABS (objfile, ps)
1295 if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE))
1297 s = PSYMTAB_TO_SYMTAB (ps);
1298 bv = BLOCKVECTOR (s);
1299 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1300 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1303 /* This shouldn't be necessary, but as a last resort
1304 * try looking in the globals even though the psymtab
1305 * claimed the symbol was static. It's possible that
1306 * the psymtab gets it wrong in some cases.
1308 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1309 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1311 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1312 %s may be an inlined function, or may be a template function\n\
1313 (if a template, try specifying an instantiation: %s<type>).",
1314 name, ps->filename, name, name);
1316 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1317 return SYMBOL_TYPE (sym);
1320 return (struct type *) 0;
1324 /* Find the psymtab containing main(). */
1325 /* FIXME: What about languages without main() or specially linked
1326 executables that have no main() ? */
1328 struct partial_symtab *
1329 find_main_psymtab (void)
1331 register struct partial_symtab *pst;
1332 register struct objfile *objfile;
1334 ALL_PSYMTABS (objfile, pst)
1336 if (lookup_partial_symbol (pst, main_name (), 1, VAR_NAMESPACE))
1344 /* Search BLOCK for symbol NAME in NAMESPACE.
1346 Note that if NAME is the demangled form of a C++ symbol, we will fail
1347 to find a match during the binary search of the non-encoded names, but
1348 for now we don't worry about the slight inefficiency of looking for
1349 a match we'll never find, since it will go pretty quick. Once the
1350 binary search terminates, we drop through and do a straight linear
1351 search on the symbols. Each symbol which is marked as being a C++
1352 symbol (language_cplus set) has both the encoded and non-encoded names
1355 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1356 particular mangled name.
1360 lookup_block_symbol (register const struct block *block, const char *name,
1361 const char *mangled_name,
1362 const namespace_enum namespace)
1364 register int bot, top, inc;
1365 register struct symbol *sym;
1366 register struct symbol *sym_found = NULL;
1367 register int do_linear_search = 1;
1369 if (BLOCK_HASHTABLE (block))
1371 unsigned int hash_index;
1372 hash_index = msymbol_hash_iw (name);
1373 hash_index = hash_index % BLOCK_BUCKETS (block);
1374 for (sym = BLOCK_BUCKET (block, hash_index); sym; sym = sym->hash_next)
1376 if (SYMBOL_NAMESPACE (sym) == namespace
1378 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1379 : SYMBOL_MATCHES_NAME (sym, name)))
1385 /* If the blocks's symbols were sorted, start with a binary search. */
1387 if (BLOCK_SHOULD_SORT (block))
1389 /* Reset the linear search flag so if the binary search fails, we
1390 won't do the linear search once unless we find some reason to
1393 do_linear_search = 0;
1394 top = BLOCK_NSYMS (block);
1397 /* Advance BOT to not far before the first symbol whose name is NAME. */
1401 inc = (top - bot + 1);
1402 /* No need to keep binary searching for the last few bits worth. */
1407 inc = (inc >> 1) + bot;
1408 sym = BLOCK_SYM (block, inc);
1409 if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java))
1411 do_linear_search = 1;
1413 if (SYMBOL_SOURCE_NAME (sym)[0] < name[0])
1417 else if (SYMBOL_SOURCE_NAME (sym)[0] > name[0])
1421 else if (strcmp (SYMBOL_SOURCE_NAME (sym), name) < 0)
1431 /* Now scan forward until we run out of symbols, find one whose
1432 name is greater than NAME, or find one we want. If there is
1433 more than one symbol with the right name and namespace, we
1434 return the first one; I believe it is now impossible for us
1435 to encounter two symbols with the same name and namespace
1436 here, because blocks containing argument symbols are no
1437 longer sorted. The exception is for C++, where multiple functions
1438 (cloned constructors / destructors, in particular) can have
1439 the same demangled name. So if we have a particular
1440 mangled name to match, try to do so. */
1442 top = BLOCK_NSYMS (block);
1445 sym = BLOCK_SYM (block, bot);
1446 if (SYMBOL_NAMESPACE (sym) == namespace
1448 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1449 : SYMBOL_MATCHES_NAME (sym, name)))
1453 if (SYMBOL_SOURCE_NAME (sym)[0] > name[0])
1461 /* Here if block isn't sorted, or we fail to find a match during the
1462 binary search above. If during the binary search above, we find a
1463 symbol which is a Java symbol, then we have re-enabled the linear
1464 search flag which was reset when starting the binary search.
1466 This loop is equivalent to the loop above, but hacked greatly for speed.
1468 Note that parameter symbols do not always show up last in the
1469 list; this loop makes sure to take anything else other than
1470 parameter symbols first; it only uses parameter symbols as a
1471 last resort. Note that this only takes up extra computation
1474 if (do_linear_search)
1476 top = BLOCK_NSYMS (block);
1480 sym = BLOCK_SYM (block, bot);
1481 if (SYMBOL_NAMESPACE (sym) == namespace
1483 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1484 : SYMBOL_MATCHES_NAME (sym, name)))
1486 /* If SYM has aliases, then use any alias that is active
1487 at the current PC. If no alias is active at the current
1488 PC, then use the main symbol.
1490 ?!? Is checking the current pc correct? Is this routine
1491 ever called to look up a symbol from another context?
1493 FIXME: No, it's not correct. If someone sets a
1494 conditional breakpoint at an address, then the
1495 breakpoint's `struct expression' should refer to the
1496 `struct symbol' appropriate for the breakpoint's
1497 address, which may not be the PC.
1499 Even if it were never called from another context,
1500 it's totally bizarre for lookup_symbol's behavior to
1501 depend on the value of the inferior's current PC. We
1502 should pass in the appropriate PC as well as the
1503 block. The interface to lookup_symbol should change
1504 to require the caller to provide a PC. */
1506 if (SYMBOL_ALIASES (sym))
1507 sym = find_active_alias (sym, read_pc ());
1510 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1511 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1512 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1513 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1514 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1515 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG)
1523 return (sym_found); /* Will be NULL if not found. */
1526 /* Given a main symbol SYM and ADDR, search through the alias
1527 list to determine if an alias is active at ADDR and return
1530 If no alias is active, then return SYM. */
1532 static struct symbol *
1533 find_active_alias (struct symbol *sym, CORE_ADDR addr)
1535 struct range_list *r;
1536 struct alias_list *aliases;
1538 /* If we have aliases, check them first. */
1539 aliases = SYMBOL_ALIASES (sym);
1543 if (!SYMBOL_RANGES (aliases->sym))
1544 return aliases->sym;
1545 for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
1547 if (r->start <= addr && r->end > addr)
1548 return aliases->sym;
1550 aliases = aliases->next;
1553 /* Nothing found, return the main symbol. */
1558 /* Return the symbol for the function which contains a specified
1559 lexical block, described by a struct block BL. */
1562 block_function (struct block *bl)
1564 while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
1565 bl = BLOCK_SUPERBLOCK (bl);
1567 return BLOCK_FUNCTION (bl);
1570 /* Find the symtab associated with PC and SECTION. Look through the
1571 psymtabs and read in another symtab if necessary. */
1574 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1576 register struct block *b;
1577 struct blockvector *bv;
1578 register struct symtab *s = NULL;
1579 register struct symtab *best_s = NULL;
1580 register struct partial_symtab *ps;
1581 register struct objfile *objfile;
1582 CORE_ADDR distance = 0;
1583 struct minimal_symbol *msymbol;
1585 /* If we know that this is not a text address, return failure. This is
1586 necessary because we loop based on the block's high and low code
1587 addresses, which do not include the data ranges, and because
1588 we call find_pc_sect_psymtab which has a similar restriction based
1589 on the partial_symtab's texthigh and textlow. */
1590 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1592 && (msymbol->type == mst_data
1593 || msymbol->type == mst_bss
1594 || msymbol->type == mst_abs
1595 || msymbol->type == mst_file_data
1596 || msymbol->type == mst_file_bss))
1599 /* Search all symtabs for the one whose file contains our address, and which
1600 is the smallest of all the ones containing the address. This is designed
1601 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1602 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1603 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1605 This happens for native ecoff format, where code from included files
1606 gets its own symtab. The symtab for the included file should have
1607 been read in already via the dependency mechanism.
1608 It might be swifter to create several symtabs with the same name
1609 like xcoff does (I'm not sure).
1611 It also happens for objfiles that have their functions reordered.
1612 For these, the symtab we are looking for is not necessarily read in. */
1614 ALL_SYMTABS (objfile, s)
1616 bv = BLOCKVECTOR (s);
1617 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1619 if (BLOCK_START (b) <= pc
1620 && BLOCK_END (b) > pc
1622 || BLOCK_END (b) - BLOCK_START (b) < distance))
1624 /* For an objfile that has its functions reordered,
1625 find_pc_psymtab will find the proper partial symbol table
1626 and we simply return its corresponding symtab. */
1627 /* In order to better support objfiles that contain both
1628 stabs and coff debugging info, we continue on if a psymtab
1630 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1632 ps = find_pc_sect_psymtab (pc, section);
1634 return PSYMTAB_TO_SYMTAB (ps);
1639 struct symbol *sym = NULL;
1641 ALL_BLOCK_SYMBOLS (b, i, sym)
1643 fixup_symbol_section (sym, objfile);
1644 if (section == SYMBOL_BFD_SECTION (sym))
1647 if ((i >= BLOCK_BUCKETS (b)) && (sym == NULL))
1648 continue; /* no symbol in this symtab matches section */
1650 distance = BLOCK_END (b) - BLOCK_START (b);
1659 ps = find_pc_sect_psymtab (pc, section);
1663 /* Might want to error() here (in case symtab is corrupt and
1664 will cause a core dump), but maybe we can successfully
1665 continue, so let's not. */
1667 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1669 s = PSYMTAB_TO_SYMTAB (ps);
1674 /* Find the symtab associated with PC. Look through the psymtabs and
1675 read in another symtab if necessary. Backward compatibility, no section */
1678 find_pc_symtab (CORE_ADDR pc)
1680 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1686 /* Find the closest symbol value (of any sort -- function or variable)
1687 for a given address value. Slow but complete. (currently unused,
1688 mainly because it is too slow. We could fix it if each symtab and
1689 psymtab had contained in it the addresses ranges of each of its
1690 sections, which also would be required to make things like "info
1691 line *0x2345" cause psymtabs to be converted to symtabs). */
1694 find_addr_symbol (CORE_ADDR addr, struct symtab **symtabp, CORE_ADDR *symaddrp)
1696 struct symtab *symtab, *best_symtab;
1697 struct objfile *objfile;
1698 register int bot, top;
1699 register struct symbol *sym;
1700 register CORE_ADDR sym_addr;
1701 struct block *block;
1704 /* Info on best symbol seen so far */
1706 register CORE_ADDR best_sym_addr = 0;
1707 struct symbol *best_sym = 0;
1709 /* FIXME -- we should pull in all the psymtabs, too! */
1710 ALL_SYMTABS (objfile, symtab)
1712 /* Search the global and static blocks in this symtab for
1713 the closest symbol-address to the desired address. */
1715 for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++)
1718 block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum);
1719 ALL_BLOCK_SYMBOLS (block, bot, sym)
1721 switch (SYMBOL_CLASS (sym))
1725 sym_addr = SYMBOL_VALUE_ADDRESS (sym);
1729 sym_addr = SYMBOL_VALUE_ADDRESS (sym);
1730 /* An indirect symbol really lives at *sym_addr,
1731 * so an indirection needs to be done.
1732 * However, I am leaving this commented out because it's
1733 * expensive, and it's possible that symbolization
1734 * could be done without an active process (in
1735 * case this read_memory will fail). RT
1736 sym_addr = read_memory_unsigned_integer
1737 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1742 sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1749 if (sym_addr <= addr)
1750 if (sym_addr > best_sym_addr)
1752 /* Quit if we found an exact match. */
1754 best_sym_addr = sym_addr;
1755 best_symtab = symtab;
1756 if (sym_addr == addr)
1765 *symtabp = best_symtab;
1767 *symaddrp = best_sym_addr;
1772 /* Find the source file and line number for a given PC value and SECTION.
1773 Return a structure containing a symtab pointer, a line number,
1774 and a pc range for the entire source line.
1775 The value's .pc field is NOT the specified pc.
1776 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1777 use the line that ends there. Otherwise, in that case, the line
1778 that begins there is used. */
1780 /* The big complication here is that a line may start in one file, and end just
1781 before the start of another file. This usually occurs when you #include
1782 code in the middle of a subroutine. To properly find the end of a line's PC
1783 range, we must search all symtabs associated with this compilation unit, and
1784 find the one whose first PC is closer than that of the next line in this
1787 /* If it's worth the effort, we could be using a binary search. */
1789 struct symtab_and_line
1790 find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent)
1793 register struct linetable *l;
1796 register struct linetable_entry *item;
1797 struct symtab_and_line val;
1798 struct blockvector *bv;
1799 struct minimal_symbol *msymbol;
1800 struct minimal_symbol *mfunsym;
1802 /* Info on best line seen so far, and where it starts, and its file. */
1804 struct linetable_entry *best = NULL;
1805 CORE_ADDR best_end = 0;
1806 struct symtab *best_symtab = 0;
1808 /* Store here the first line number
1809 of a file which contains the line at the smallest pc after PC.
1810 If we don't find a line whose range contains PC,
1811 we will use a line one less than this,
1812 with a range from the start of that file to the first line's pc. */
1813 struct linetable_entry *alt = NULL;
1814 struct symtab *alt_symtab = 0;
1816 /* Info on best line seen in this file. */
1818 struct linetable_entry *prev;
1820 /* If this pc is not from the current frame,
1821 it is the address of the end of a call instruction.
1822 Quite likely that is the start of the following statement.
1823 But what we want is the statement containing the instruction.
1824 Fudge the pc to make sure we get that. */
1826 INIT_SAL (&val); /* initialize to zeroes */
1828 /* It's tempting to assume that, if we can't find debugging info for
1829 any function enclosing PC, that we shouldn't search for line
1830 number info, either. However, GAS can emit line number info for
1831 assembly files --- very helpful when debugging hand-written
1832 assembly code. In such a case, we'd have no debug info for the
1833 function, but we would have line info. */
1838 /* elz: added this because this function returned the wrong
1839 information if the pc belongs to a stub (import/export)
1840 to call a shlib function. This stub would be anywhere between
1841 two functions in the target, and the line info was erroneously
1842 taken to be the one of the line before the pc.
1844 /* RT: Further explanation:
1846 * We have stubs (trampolines) inserted between procedures.
1848 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1849 * exists in the main image.
1851 * In the minimal symbol table, we have a bunch of symbols
1852 * sorted by start address. The stubs are marked as "trampoline",
1853 * the others appear as text. E.g.:
1855 * Minimal symbol table for main image
1856 * main: code for main (text symbol)
1857 * shr1: stub (trampoline symbol)
1858 * foo: code for foo (text symbol)
1860 * Minimal symbol table for "shr1" image:
1862 * shr1: code for shr1 (text symbol)
1865 * So the code below is trying to detect if we are in the stub
1866 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1867 * and if found, do the symbolization from the real-code address
1868 * rather than the stub address.
1870 * Assumptions being made about the minimal symbol table:
1871 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1872 * if we're really in the trampoline. If we're beyond it (say
1873 * we're in "foo" in the above example), it'll have a closer
1874 * symbol (the "foo" text symbol for example) and will not
1875 * return the trampoline.
1876 * 2. lookup_minimal_symbol_text() will find a real text symbol
1877 * corresponding to the trampoline, and whose address will
1878 * be different than the trampoline address. I put in a sanity
1879 * check for the address being the same, to avoid an
1880 * infinite recursion.
1882 msymbol = lookup_minimal_symbol_by_pc (pc);
1883 if (msymbol != NULL)
1884 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
1886 mfunsym = lookup_minimal_symbol_text (SYMBOL_NAME (msymbol), NULL, NULL);
1887 if (mfunsym == NULL)
1888 /* I eliminated this warning since it is coming out
1889 * in the following situation:
1890 * gdb shmain // test program with shared libraries
1891 * (gdb) break shr1 // function in shared lib
1892 * Warning: In stub for ...
1893 * In the above situation, the shared lib is not loaded yet,
1894 * so of course we can't find the real func/line info,
1895 * but the "break" still works, and the warning is annoying.
1896 * So I commented out the warning. RT */
1897 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1899 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
1900 /* Avoid infinite recursion */
1901 /* See above comment about why warning is commented out */
1902 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1905 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
1909 s = find_pc_sect_symtab (pc, section);
1912 /* if no symbol information, return previous pc */
1919 bv = BLOCKVECTOR (s);
1921 /* Look at all the symtabs that share this blockvector.
1922 They all have the same apriori range, that we found was right;
1923 but they have different line tables. */
1925 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
1927 /* Find the best line in this symtab. */
1934 /* I think len can be zero if the symtab lacks line numbers
1935 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1936 I'm not sure which, and maybe it depends on the symbol
1942 item = l->item; /* Get first line info */
1944 /* Is this file's first line closer than the first lines of other files?
1945 If so, record this file, and its first line, as best alternate. */
1946 if (item->pc > pc && (!alt || item->pc < alt->pc))
1952 for (i = 0; i < len; i++, item++)
1954 /* Leave prev pointing to the linetable entry for the last line
1955 that started at or before PC. */
1962 /* At this point, prev points at the line whose start addr is <= pc, and
1963 item points at the next line. If we ran off the end of the linetable
1964 (pc >= start of the last line), then prev == item. If pc < start of
1965 the first line, prev will not be set. */
1967 /* Is this file's best line closer than the best in the other files?
1968 If so, record this file, and its best line, as best so far. */
1970 if (prev && (!best || prev->pc > best->pc))
1975 /* Discard BEST_END if it's before the PC of the current BEST. */
1976 if (best_end <= best->pc)
1980 /* If another line (denoted by ITEM) is in the linetable and its
1981 PC is after BEST's PC, but before the current BEST_END, then
1982 use ITEM's PC as the new best_end. */
1983 if (best && i < len && item->pc > best->pc
1984 && (best_end == 0 || best_end > item->pc))
1985 best_end = item->pc;
1991 { /* If we didn't find any line # info, just
1997 val.symtab = alt_symtab;
1998 val.line = alt->line - 1;
2000 /* Don't return line 0, that means that we didn't find the line. */
2004 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2008 else if (best->line == 0)
2010 /* If our best fit is in a range of PC's for which no line
2011 number info is available (line number is zero) then we didn't
2012 find any valid line information. */
2017 val.symtab = best_symtab;
2018 val.line = best->line;
2020 if (best_end && (!alt || best_end < alt->pc))
2025 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2027 val.section = section;
2031 /* Backward compatibility (no section) */
2033 struct symtab_and_line
2034 find_pc_line (CORE_ADDR pc, int notcurrent)
2038 section = find_pc_overlay (pc);
2039 if (pc_in_unmapped_range (pc, section))
2040 pc = overlay_mapped_address (pc, section);
2041 return find_pc_sect_line (pc, section, notcurrent);
2044 /* Find line number LINE in any symtab whose name is the same as
2047 If found, return the symtab that contains the linetable in which it was
2048 found, set *INDEX to the index in the linetable of the best entry
2049 found, and set *EXACT_MATCH nonzero if the value returned is an
2052 If not found, return NULL. */
2055 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2059 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2063 struct linetable *best_linetable;
2064 struct symtab *best_symtab;
2066 /* First try looking it up in the given symtab. */
2067 best_linetable = LINETABLE (symtab);
2068 best_symtab = symtab;
2069 best_index = find_line_common (best_linetable, line, &exact);
2070 if (best_index < 0 || !exact)
2072 /* Didn't find an exact match. So we better keep looking for
2073 another symtab with the same name. In the case of xcoff,
2074 multiple csects for one source file (produced by IBM's FORTRAN
2075 compiler) produce multiple symtabs (this is unavoidable
2076 assuming csects can be at arbitrary places in memory and that
2077 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2079 /* BEST is the smallest linenumber > LINE so far seen,
2080 or 0 if none has been seen so far.
2081 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2084 struct objfile *objfile;
2087 if (best_index >= 0)
2088 best = best_linetable->item[best_index].line;
2092 ALL_SYMTABS (objfile, s)
2094 struct linetable *l;
2097 if (!STREQ (symtab->filename, s->filename))
2100 ind = find_line_common (l, line, &exact);
2110 if (best == 0 || l->item[ind].line < best)
2112 best = l->item[ind].line;
2125 *index = best_index;
2127 *exact_match = exact;
2132 /* Set the PC value for a given source file and line number and return true.
2133 Returns zero for invalid line number (and sets the PC to 0).
2134 The source file is specified with a struct symtab. */
2137 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2139 struct linetable *l;
2146 symtab = find_line_symtab (symtab, line, &ind, NULL);
2149 l = LINETABLE (symtab);
2150 *pc = l->item[ind].pc;
2157 /* Find the range of pc values in a line.
2158 Store the starting pc of the line into *STARTPTR
2159 and the ending pc (start of next line) into *ENDPTR.
2160 Returns 1 to indicate success.
2161 Returns 0 if could not find the specified line. */
2164 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2167 CORE_ADDR startaddr;
2168 struct symtab_and_line found_sal;
2171 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2174 /* This whole function is based on address. For example, if line 10 has
2175 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2176 "info line *0x123" should say the line goes from 0x100 to 0x200
2177 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2178 This also insures that we never give a range like "starts at 0x134
2179 and ends at 0x12c". */
2181 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2182 if (found_sal.line != sal.line)
2184 /* The specified line (sal) has zero bytes. */
2185 *startptr = found_sal.pc;
2186 *endptr = found_sal.pc;
2190 *startptr = found_sal.pc;
2191 *endptr = found_sal.end;
2196 /* Given a line table and a line number, return the index into the line
2197 table for the pc of the nearest line whose number is >= the specified one.
2198 Return -1 if none is found. The value is >= 0 if it is an index.
2200 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2203 find_line_common (register struct linetable *l, register int lineno,
2209 /* BEST is the smallest linenumber > LINENO so far seen,
2210 or 0 if none has been seen so far.
2211 BEST_INDEX identifies the item for it. */
2213 int best_index = -1;
2222 for (i = 0; i < len; i++)
2224 register struct linetable_entry *item = &(l->item[i]);
2226 if (item->line == lineno)
2228 /* Return the first (lowest address) entry which matches. */
2233 if (item->line > lineno && (best == 0 || item->line < best))
2240 /* If we got here, we didn't get an exact match. */
2247 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2249 struct symtab_and_line sal;
2250 sal = find_pc_line (pc, 0);
2253 return sal.symtab != 0;
2256 /* Given a function symbol SYM, find the symtab and line for the start
2258 If the argument FUNFIRSTLINE is nonzero, we want the first line
2259 of real code inside the function. */
2261 struct symtab_and_line
2262 find_function_start_sal (struct symbol *sym, int funfirstline)
2265 struct symtab_and_line sal;
2267 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2268 fixup_symbol_section (sym, NULL);
2270 { /* skip "first line" of function (which is actually its prologue) */
2271 asection *section = SYMBOL_BFD_SECTION (sym);
2272 /* If function is in an unmapped overlay, use its unmapped LMA
2273 address, so that SKIP_PROLOGUE has something unique to work on */
2274 if (section_is_overlay (section) &&
2275 !section_is_mapped (section))
2276 pc = overlay_unmapped_address (pc, section);
2278 pc += FUNCTION_START_OFFSET;
2279 pc = SKIP_PROLOGUE (pc);
2281 /* For overlays, map pc back into its mapped VMA range */
2282 pc = overlay_mapped_address (pc, section);
2284 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2286 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2287 /* Convex: no need to suppress code on first line, if any */
2290 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2291 line is still part of the same function. */
2293 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2294 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2296 /* First pc of next line */
2298 /* Recalculate the line number (might not be N+1). */
2299 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2307 /* If P is of the form "operator[ \t]+..." where `...' is
2308 some legitimate operator text, return a pointer to the
2309 beginning of the substring of the operator text.
2310 Otherwise, return "". */
2312 operator_chars (char *p, char **end)
2315 if (strncmp (p, "operator", 8))
2319 /* Don't get faked out by `operator' being part of a longer
2321 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2324 /* Allow some whitespace between `operator' and the operator symbol. */
2325 while (*p == ' ' || *p == '\t')
2328 /* Recognize 'operator TYPENAME'. */
2330 if (isalpha (*p) || *p == '_' || *p == '$')
2332 register char *q = p + 1;
2333 while (isalnum (*q) || *q == '_' || *q == '$')
2342 case '\\': /* regexp quoting */
2345 if (p[2] == '=') /* 'operator\*=' */
2347 else /* 'operator\*' */
2351 else if (p[1] == '[')
2354 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2355 else if (p[2] == '\\' && p[3] == ']')
2357 *end = p + 4; /* 'operator\[\]' */
2361 error ("nothing is allowed between '[' and ']'");
2365 /* Gratuitous qoute: skip it and move on. */
2387 if (p[0] == '-' && p[1] == '>')
2389 /* Struct pointer member operator 'operator->'. */
2392 *end = p + 3; /* 'operator->*' */
2395 else if (p[2] == '\\')
2397 *end = p + 4; /* Hopefully 'operator->\*' */
2402 *end = p + 2; /* 'operator->' */
2406 if (p[1] == '=' || p[1] == p[0])
2417 error ("`operator ()' must be specified without whitespace in `()'");
2422 error ("`operator ?:' must be specified without whitespace in `?:'");
2427 error ("`operator []' must be specified without whitespace in `[]'");
2431 error ("`operator %s' not supported", p);
2440 /* If FILE is not already in the table of files, return zero;
2441 otherwise return non-zero. Optionally add FILE to the table if ADD
2442 is non-zero. If *FIRST is non-zero, forget the old table
2445 filename_seen (const char *file, int add, int *first)
2447 /* Table of files seen so far. */
2448 static const char **tab = NULL;
2449 /* Allocated size of tab in elements.
2450 Start with one 256-byte block (when using GNU malloc.c).
2451 24 is the malloc overhead when range checking is in effect. */
2452 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2453 /* Current size of tab in elements. */
2454 static int tab_cur_size;
2460 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2464 /* Is FILE in tab? */
2465 for (p = tab; p < tab + tab_cur_size; p++)
2466 if (strcmp (*p, file) == 0)
2469 /* No; maybe add it to tab. */
2472 if (tab_cur_size == tab_alloc_size)
2474 tab_alloc_size *= 2;
2475 tab = (const char **) xrealloc ((char *) tab,
2476 tab_alloc_size * sizeof (*tab));
2478 tab[tab_cur_size++] = file;
2484 /* Slave routine for sources_info. Force line breaks at ,'s.
2485 NAME is the name to print and *FIRST is nonzero if this is the first
2486 name printed. Set *FIRST to zero. */
2488 output_source_filename (char *name, int *first)
2490 /* Since a single source file can result in several partial symbol
2491 tables, we need to avoid printing it more than once. Note: if
2492 some of the psymtabs are read in and some are not, it gets
2493 printed both under "Source files for which symbols have been
2494 read" and "Source files for which symbols will be read in on
2495 demand". I consider this a reasonable way to deal with the
2496 situation. I'm not sure whether this can also happen for
2497 symtabs; it doesn't hurt to check. */
2499 /* Was NAME already seen? */
2500 if (filename_seen (name, 1, first))
2502 /* Yes; don't print it again. */
2505 /* No; print it and reset *FIRST. */
2512 printf_filtered (", ");
2516 fputs_filtered (name, gdb_stdout);
2520 sources_info (char *ignore, int from_tty)
2522 register struct symtab *s;
2523 register struct partial_symtab *ps;
2524 register struct objfile *objfile;
2527 if (!have_full_symbols () && !have_partial_symbols ())
2529 error ("No symbol table is loaded. Use the \"file\" command.");
2532 printf_filtered ("Source files for which symbols have been read in:\n\n");
2535 ALL_SYMTABS (objfile, s)
2537 output_source_filename (s->filename, &first);
2539 printf_filtered ("\n\n");
2541 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2544 ALL_PSYMTABS (objfile, ps)
2548 output_source_filename (ps->filename, &first);
2551 printf_filtered ("\n");
2555 file_matches (char *file, char *files[], int nfiles)
2559 if (file != NULL && nfiles != 0)
2561 for (i = 0; i < nfiles; i++)
2563 if (strcmp (files[i], lbasename (file)) == 0)
2567 else if (nfiles == 0)
2572 /* Free any memory associated with a search. */
2574 free_search_symbols (struct symbol_search *symbols)
2576 struct symbol_search *p;
2577 struct symbol_search *next;
2579 for (p = symbols; p != NULL; p = next)
2587 do_free_search_symbols_cleanup (void *symbols)
2589 free_search_symbols (symbols);
2593 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2595 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2598 /* Helper function for sort_search_symbols and qsort. Can only
2599 sort symbols, not minimal symbols. */
2601 compare_search_syms (const void *sa, const void *sb)
2603 struct symbol_search **sym_a = (struct symbol_search **) sa;
2604 struct symbol_search **sym_b = (struct symbol_search **) sb;
2606 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a)->symbol),
2607 SYMBOL_SOURCE_NAME ((*sym_b)->symbol));
2610 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2611 prevtail where it is, but update its next pointer to point to
2612 the first of the sorted symbols. */
2613 static struct symbol_search *
2614 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2616 struct symbol_search **symbols, *symp, *old_next;
2619 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2621 symp = prevtail->next;
2622 for (i = 0; i < nfound; i++)
2627 /* Generally NULL. */
2630 qsort (symbols, nfound, sizeof (struct symbol_search *),
2631 compare_search_syms);
2634 for (i = 0; i < nfound; i++)
2636 symp->next = symbols[i];
2639 symp->next = old_next;
2645 /* Search the symbol table for matches to the regular expression REGEXP,
2646 returning the results in *MATCHES.
2648 Only symbols of KIND are searched:
2649 FUNCTIONS_NAMESPACE - search all functions
2650 TYPES_NAMESPACE - search all type names
2651 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2652 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2653 and constants (enums)
2655 free_search_symbols should be called when *MATCHES is no longer needed.
2657 The results are sorted locally; each symtab's global and static blocks are
2658 separately alphabetized.
2661 search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[],
2662 struct symbol_search **matches)
2664 register struct symtab *s;
2665 register struct partial_symtab *ps;
2666 register struct blockvector *bv;
2667 struct blockvector *prev_bv = 0;
2668 register struct block *b;
2671 register struct symbol *sym;
2672 struct partial_symbol **psym;
2673 struct objfile *objfile;
2674 struct minimal_symbol *msymbol;
2677 static enum minimal_symbol_type types[]
2679 {mst_data, mst_text, mst_abs, mst_unknown};
2680 static enum minimal_symbol_type types2[]
2682 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2683 static enum minimal_symbol_type types3[]
2685 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2686 static enum minimal_symbol_type types4[]
2688 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2689 enum minimal_symbol_type ourtype;
2690 enum minimal_symbol_type ourtype2;
2691 enum minimal_symbol_type ourtype3;
2692 enum minimal_symbol_type ourtype4;
2693 struct symbol_search *sr;
2694 struct symbol_search *psr;
2695 struct symbol_search *tail;
2696 struct cleanup *old_chain = NULL;
2698 if (kind < VARIABLES_NAMESPACE)
2699 error ("must search on specific namespace");
2701 ourtype = types[(int) (kind - VARIABLES_NAMESPACE)];
2702 ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)];
2703 ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)];
2704 ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)];
2706 sr = *matches = NULL;
2711 /* Make sure spacing is right for C++ operators.
2712 This is just a courtesy to make the matching less sensitive
2713 to how many spaces the user leaves between 'operator'
2714 and <TYPENAME> or <OPERATOR>. */
2716 char *opname = operator_chars (regexp, &opend);
2719 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2720 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2722 /* There should 1 space between 'operator' and 'TYPENAME'. */
2723 if (opname[-1] != ' ' || opname[-2] == ' ')
2728 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2729 if (opname[-1] == ' ')
2732 /* If wrong number of spaces, fix it. */
2735 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2736 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2741 if (0 != (val = re_comp (regexp)))
2742 error ("Invalid regexp (%s): %s", val, regexp);
2745 /* Search through the partial symtabs *first* for all symbols
2746 matching the regexp. That way we don't have to reproduce all of
2747 the machinery below. */
2749 ALL_PSYMTABS (objfile, ps)
2751 struct partial_symbol **bound, **gbound, **sbound;
2757 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2758 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2761 /* Go through all of the symbols stored in a partial
2762 symtab in one loop. */
2763 psym = objfile->global_psymbols.list + ps->globals_offset;
2768 if (bound == gbound && ps->n_static_syms != 0)
2770 psym = objfile->static_psymbols.list + ps->statics_offset;
2781 /* If it would match (logic taken from loop below)
2782 load the file and go on to the next one */
2783 if (file_matches (ps->filename, files, nfiles)
2784 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym))
2785 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2786 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2787 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2788 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2789 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2791 PSYMTAB_TO_SYMTAB (ps);
2799 /* Here, we search through the minimal symbol tables for functions
2800 and variables that match, and force their symbols to be read.
2801 This is in particular necessary for demangled variable names,
2802 which are no longer put into the partial symbol tables.
2803 The symbol will then be found during the scan of symtabs below.
2805 For functions, find_pc_symtab should succeed if we have debug info
2806 for the function, for variables we have to call lookup_symbol
2807 to determine if the variable has debug info.
2808 If the lookup fails, set found_misc so that we will rescan to print
2809 any matching symbols without debug info.
2812 if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE))
2814 ALL_MSYMBOLS (objfile, msymbol)
2816 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2817 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2818 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2819 MSYMBOL_TYPE (msymbol) == ourtype4)
2821 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2823 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2825 if (kind == FUNCTIONS_NAMESPACE
2826 || lookup_symbol (SYMBOL_NAME (msymbol),
2827 (struct block *) NULL,
2829 0, (struct symtab **) NULL) == NULL)
2837 ALL_SYMTABS (objfile, s)
2839 bv = BLOCKVECTOR (s);
2840 /* Often many files share a blockvector.
2841 Scan each blockvector only once so that
2842 we don't get every symbol many times.
2843 It happens that the first symtab in the list
2844 for any given blockvector is the main file. */
2846 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
2848 struct symbol_search *prevtail = tail;
2850 b = BLOCKVECTOR_BLOCK (bv, i);
2851 ALL_BLOCK_SYMBOLS (b, j, sym)
2854 if (file_matches (s->filename, files, nfiles)
2855 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
2856 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
2857 && SYMBOL_CLASS (sym) != LOC_BLOCK
2858 && SYMBOL_CLASS (sym) != LOC_CONST)
2859 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)
2860 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
2861 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK))))
2864 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2868 psr->msymbol = NULL;
2880 if (prevtail == NULL)
2882 struct symbol_search dummy;
2885 tail = sort_search_symbols (&dummy, nfound);
2888 old_chain = make_cleanup_free_search_symbols (sr);
2891 tail = sort_search_symbols (prevtail, nfound);
2897 /* If there are no eyes, avoid all contact. I mean, if there are
2898 no debug symbols, then print directly from the msymbol_vector. */
2900 if (found_misc || kind != FUNCTIONS_NAMESPACE)
2902 ALL_MSYMBOLS (objfile, msymbol)
2904 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2905 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2906 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2907 MSYMBOL_TYPE (msymbol) == ourtype4)
2909 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2911 /* Functions: Look up by address. */
2912 if (kind != FUNCTIONS_NAMESPACE ||
2913 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
2915 /* Variables/Absolutes: Look up by name */
2916 if (lookup_symbol (SYMBOL_NAME (msymbol),
2917 (struct block *) NULL, VAR_NAMESPACE,
2918 0, (struct symtab **) NULL) == NULL)
2921 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2923 psr->msymbol = msymbol;
2930 old_chain = make_cleanup_free_search_symbols (sr);
2944 discard_cleanups (old_chain);
2947 /* Helper function for symtab_symbol_info, this function uses
2948 the data returned from search_symbols() to print information
2949 regarding the match to gdb_stdout.
2952 print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym,
2953 int block, char *last)
2955 if (last == NULL || strcmp (last, s->filename) != 0)
2957 fputs_filtered ("\nFile ", gdb_stdout);
2958 fputs_filtered (s->filename, gdb_stdout);
2959 fputs_filtered (":\n", gdb_stdout);
2962 if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK)
2963 printf_filtered ("static ");
2965 /* Typedef that is not a C++ class */
2966 if (kind == TYPES_NAMESPACE
2967 && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
2968 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
2969 /* variable, func, or typedef-that-is-c++-class */
2970 else if (kind < TYPES_NAMESPACE ||
2971 (kind == TYPES_NAMESPACE &&
2972 SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE))
2974 type_print (SYMBOL_TYPE (sym),
2975 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
2976 ? "" : SYMBOL_SOURCE_NAME (sym)),
2979 printf_filtered (";\n");
2984 /* Tiemann says: "info methods was never implemented." */
2985 char *demangled_name;
2986 c_type_print_base (TYPE_FN_FIELD_TYPE (t, block),
2988 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t, block),
2990 if (TYPE_FN_FIELD_STUB (t, block))
2991 check_stub_method (TYPE_DOMAIN_TYPE (type), j, block);
2993 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t, block),
2994 DMGL_ANSI | DMGL_PARAMS);
2995 if (demangled_name == NULL)
2996 fprintf_filtered (stream, "<badly mangled name %s>",
2997 TYPE_FN_FIELD_PHYSNAME (t, block));
3000 fputs_filtered (demangled_name, stream);
3001 xfree (demangled_name);
3007 /* This help function for symtab_symbol_info() prints information
3008 for non-debugging symbols to gdb_stdout.
3011 print_msymbol_info (struct minimal_symbol *msymbol)
3015 if (TARGET_ADDR_BIT <= 32)
3016 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3017 & (CORE_ADDR) 0xffffffff,
3020 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3022 printf_filtered ("%s %s\n",
3023 tmp, SYMBOL_SOURCE_NAME (msymbol));
3026 /* This is the guts of the commands "info functions", "info types", and
3027 "info variables". It calls search_symbols to find all matches and then
3028 print_[m]symbol_info to print out some useful information about the
3032 symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty)
3034 static char *classnames[]
3036 {"variable", "function", "type", "method"};
3037 struct symbol_search *symbols;
3038 struct symbol_search *p;
3039 struct cleanup *old_chain;
3040 char *last_filename = NULL;
3043 /* must make sure that if we're interrupted, symbols gets freed */
3044 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3045 old_chain = make_cleanup_free_search_symbols (symbols);
3047 printf_filtered (regexp
3048 ? "All %ss matching regular expression \"%s\":\n"
3049 : "All defined %ss:\n",
3050 classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp);
3052 for (p = symbols; p != NULL; p = p->next)
3056 if (p->msymbol != NULL)
3060 printf_filtered ("\nNon-debugging symbols:\n");
3063 print_msymbol_info (p->msymbol);
3067 print_symbol_info (kind,
3072 last_filename = p->symtab->filename;
3076 do_cleanups (old_chain);
3080 variables_info (char *regexp, int from_tty)
3082 symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty);
3086 functions_info (char *regexp, int from_tty)
3088 symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty);
3093 types_info (char *regexp, int from_tty)
3095 symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty);
3099 /* Tiemann says: "info methods was never implemented." */
3101 methods_info (char *regexp)
3103 symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty);
3107 /* Breakpoint all functions matching regular expression. */
3110 rbreak_command_wrapper (char *regexp, int from_tty)
3112 rbreak_command (regexp, from_tty);
3116 rbreak_command (char *regexp, int from_tty)
3118 struct symbol_search *ss;
3119 struct symbol_search *p;
3120 struct cleanup *old_chain;
3122 search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss);
3123 old_chain = make_cleanup_free_search_symbols (ss);
3125 for (p = ss; p != NULL; p = p->next)
3127 if (p->msymbol == NULL)
3129 char *string = (char *) alloca (strlen (p->symtab->filename)
3130 + strlen (SYMBOL_NAME (p->symbol))
3132 strcpy (string, p->symtab->filename);
3133 strcat (string, ":'");
3134 strcat (string, SYMBOL_NAME (p->symbol));
3135 strcat (string, "'");
3136 break_command (string, from_tty);
3137 print_symbol_info (FUNCTIONS_NAMESPACE,
3141 p->symtab->filename);
3145 break_command (SYMBOL_NAME (p->msymbol), from_tty);
3146 printf_filtered ("<function, no debug info> %s;\n",
3147 SYMBOL_SOURCE_NAME (p->msymbol));
3151 do_cleanups (old_chain);
3155 /* Return Nonzero if block a is lexically nested within block b,
3156 or if a and b have the same pc range.
3157 Return zero otherwise. */
3159 contained_in (struct block *a, struct block *b)
3163 return BLOCK_START (a) >= BLOCK_START (b)
3164 && BLOCK_END (a) <= BLOCK_END (b);
3168 /* Helper routine for make_symbol_completion_list. */
3170 static int return_val_size;
3171 static int return_val_index;
3172 static char **return_val;
3174 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3176 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3177 /* Put only the mangled name on the list. */ \
3178 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3179 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3180 completion_list_add_name \
3181 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3183 completion_list_add_name \
3184 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3187 /* Test to see if the symbol specified by SYMNAME (which is already
3188 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3189 characters. If so, add it to the current completion list. */
3192 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3193 char *text, char *word)
3198 /* clip symbols that cannot match */
3200 if (strncmp (symname, sym_text, sym_text_len) != 0)
3205 /* We have a match for a completion, so add SYMNAME to the current list
3206 of matches. Note that the name is moved to freshly malloc'd space. */
3210 if (word == sym_text)
3212 new = xmalloc (strlen (symname) + 5);
3213 strcpy (new, symname);
3215 else if (word > sym_text)
3217 /* Return some portion of symname. */
3218 new = xmalloc (strlen (symname) + 5);
3219 strcpy (new, symname + (word - sym_text));
3223 /* Return some of SYM_TEXT plus symname. */
3224 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3225 strncpy (new, word, sym_text - word);
3226 new[sym_text - word] = '\0';
3227 strcat (new, symname);
3230 if (return_val_index + 3 > return_val_size)
3232 newsize = (return_val_size *= 2) * sizeof (char *);
3233 return_val = (char **) xrealloc ((char *) return_val, newsize);
3235 return_val[return_val_index++] = new;
3236 return_val[return_val_index] = NULL;
3240 /* Return a NULL terminated array of all symbols (regardless of class)
3241 which begin by matching TEXT. If the answer is no symbols, then
3242 the return value is an array which contains only a NULL pointer.
3244 Problem: All of the symbols have to be copied because readline frees them.
3245 I'm not going to worry about this; hopefully there won't be that many. */
3248 make_symbol_completion_list (char *text, char *word)
3250 register struct symbol *sym;
3251 register struct symtab *s;
3252 register struct partial_symtab *ps;
3253 register struct minimal_symbol *msymbol;
3254 register struct objfile *objfile;
3255 register struct block *b, *surrounding_static_block = 0;
3257 struct partial_symbol **psym;
3258 /* The symbol we are completing on. Points in same buffer as text. */
3260 /* Length of sym_text. */
3263 /* Now look for the symbol we are supposed to complete on.
3264 FIXME: This should be language-specific. */
3268 char *quote_pos = NULL;
3270 /* First see if this is a quoted string. */
3272 for (p = text; *p != '\0'; ++p)
3274 if (quote_found != '\0')
3276 if (*p == quote_found)
3277 /* Found close quote. */
3279 else if (*p == '\\' && p[1] == quote_found)
3280 /* A backslash followed by the quote character
3281 doesn't end the string. */
3284 else if (*p == '\'' || *p == '"')
3290 if (quote_found == '\'')
3291 /* A string within single quotes can be a symbol, so complete on it. */
3292 sym_text = quote_pos + 1;
3293 else if (quote_found == '"')
3294 /* A double-quoted string is never a symbol, nor does it make sense
3295 to complete it any other way. */
3297 return_val = (char **) xmalloc (sizeof (char *));
3298 return_val[0] = NULL;
3303 /* It is not a quoted string. Break it based on the characters
3304 which are in symbols. */
3307 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3316 sym_text_len = strlen (sym_text);
3318 return_val_size = 100;
3319 return_val_index = 0;
3320 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3321 return_val[0] = NULL;
3323 /* Look through the partial symtabs for all symbols which begin
3324 by matching SYM_TEXT. Add each one that you find to the list. */
3326 ALL_PSYMTABS (objfile, ps)
3328 /* If the psymtab's been read in we'll get it when we search
3329 through the blockvector. */
3333 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3334 psym < (objfile->global_psymbols.list + ps->globals_offset
3335 + ps->n_global_syms);
3338 /* If interrupted, then quit. */
3340 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3343 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3344 psym < (objfile->static_psymbols.list + ps->statics_offset
3345 + ps->n_static_syms);
3349 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3353 /* At this point scan through the misc symbol vectors and add each
3354 symbol you find to the list. Eventually we want to ignore
3355 anything that isn't a text symbol (everything else will be
3356 handled by the psymtab code above). */
3358 ALL_MSYMBOLS (objfile, msymbol)
3361 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3364 /* Search upwards from currently selected frame (so that we can
3365 complete on local vars. */
3367 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3369 if (!BLOCK_SUPERBLOCK (b))
3371 surrounding_static_block = b; /* For elmin of dups */
3374 /* Also catch fields of types defined in this places which match our
3375 text string. Only complete on types visible from current context. */
3377 ALL_BLOCK_SYMBOLS (b, i, sym)
3379 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3380 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3382 struct type *t = SYMBOL_TYPE (sym);
3383 enum type_code c = TYPE_CODE (t);
3385 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3387 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3389 if (TYPE_FIELD_NAME (t, j))
3391 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3392 sym_text, sym_text_len, text, word);
3400 /* Go through the symtabs and check the externs and statics for
3401 symbols which match. */
3403 ALL_SYMTABS (objfile, s)
3406 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3407 ALL_BLOCK_SYMBOLS (b, i, sym)
3409 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3413 ALL_SYMTABS (objfile, s)
3416 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3417 /* Don't do this block twice. */
3418 if (b == surrounding_static_block)
3420 ALL_BLOCK_SYMBOLS (b, i, sym)
3422 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3426 return (return_val);
3429 /* Like make_symbol_completion_list, but returns a list of symbols
3430 defined in a source file FILE. */
3433 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3435 register struct symbol *sym;
3436 register struct symtab *s;
3437 register struct block *b;
3439 /* The symbol we are completing on. Points in same buffer as text. */
3441 /* Length of sym_text. */
3444 /* Now look for the symbol we are supposed to complete on.
3445 FIXME: This should be language-specific. */
3449 char *quote_pos = NULL;
3451 /* First see if this is a quoted string. */
3453 for (p = text; *p != '\0'; ++p)
3455 if (quote_found != '\0')
3457 if (*p == quote_found)
3458 /* Found close quote. */
3460 else if (*p == '\\' && p[1] == quote_found)
3461 /* A backslash followed by the quote character
3462 doesn't end the string. */
3465 else if (*p == '\'' || *p == '"')
3471 if (quote_found == '\'')
3472 /* A string within single quotes can be a symbol, so complete on it. */
3473 sym_text = quote_pos + 1;
3474 else if (quote_found == '"')
3475 /* A double-quoted string is never a symbol, nor does it make sense
3476 to complete it any other way. */
3478 return_val = (char **) xmalloc (sizeof (char *));
3479 return_val[0] = NULL;
3484 /* It is not a quoted string. Break it based on the characters
3485 which are in symbols. */
3488 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3497 sym_text_len = strlen (sym_text);
3499 return_val_size = 10;
3500 return_val_index = 0;
3501 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3502 return_val[0] = NULL;
3504 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3506 s = lookup_symtab (srcfile);
3509 /* Maybe they typed the file with leading directories, while the
3510 symbol tables record only its basename. */
3511 const char *tail = lbasename (srcfile);
3514 s = lookup_symtab (tail);
3517 /* If we have no symtab for that file, return an empty list. */
3519 return (return_val);
3521 /* Go through this symtab and check the externs and statics for
3522 symbols which match. */
3524 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3525 ALL_BLOCK_SYMBOLS (b, i, sym)
3527 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3530 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3531 ALL_BLOCK_SYMBOLS (b, i, sym)
3533 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3536 return (return_val);
3539 /* A helper function for make_source_files_completion_list. It adds
3540 another file name to a list of possible completions, growing the
3541 list as necessary. */
3544 add_filename_to_list (const char *fname, char *text, char *word,
3545 char ***list, int *list_used, int *list_alloced)
3548 size_t fnlen = strlen (fname);
3550 if (*list_used + 1 >= *list_alloced)
3553 *list = (char **) xrealloc ((char *) *list,
3554 *list_alloced * sizeof (char *));
3559 /* Return exactly fname. */
3560 new = xmalloc (fnlen + 5);
3561 strcpy (new, fname);
3563 else if (word > text)
3565 /* Return some portion of fname. */
3566 new = xmalloc (fnlen + 5);
3567 strcpy (new, fname + (word - text));
3571 /* Return some of TEXT plus fname. */
3572 new = xmalloc (fnlen + (text - word) + 5);
3573 strncpy (new, word, text - word);
3574 new[text - word] = '\0';
3575 strcat (new, fname);
3577 (*list)[*list_used] = new;
3578 (*list)[++*list_used] = NULL;
3582 not_interesting_fname (const char *fname)
3584 static const char *illegal_aliens[] = {
3585 "_globals_", /* inserted by coff_symtab_read */
3590 for (i = 0; illegal_aliens[i]; i++)
3592 if (strcmp (fname, illegal_aliens[i]) == 0)
3598 /* Return a NULL terminated array of all source files whose names
3599 begin with matching TEXT. The file names are looked up in the
3600 symbol tables of this program. If the answer is no matchess, then
3601 the return value is an array which contains only a NULL pointer. */
3604 make_source_files_completion_list (char *text, char *word)
3606 register struct symtab *s;
3607 register struct partial_symtab *ps;
3608 register struct objfile *objfile;
3610 int list_alloced = 1;
3612 size_t text_len = strlen (text);
3613 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3614 const char *base_name;
3618 if (!have_full_symbols () && !have_partial_symbols ())
3621 ALL_SYMTABS (objfile, s)
3623 if (not_interesting_fname (s->filename))
3625 if (!filename_seen (s->filename, 1, &first)
3626 #if HAVE_DOS_BASED_FILE_SYSTEM
3627 && strncasecmp (s->filename, text, text_len) == 0
3629 && strncmp (s->filename, text, text_len) == 0
3633 /* This file matches for a completion; add it to the current
3635 add_filename_to_list (s->filename, text, word,
3636 &list, &list_used, &list_alloced);
3640 /* NOTE: We allow the user to type a base name when the
3641 debug info records leading directories, but not the other
3642 way around. This is what subroutines of breakpoint
3643 command do when they parse file names. */
3644 base_name = lbasename (s->filename);
3645 if (base_name != s->filename
3646 && !filename_seen (base_name, 1, &first)
3647 #if HAVE_DOS_BASED_FILE_SYSTEM
3648 && strncasecmp (base_name, text, text_len) == 0
3650 && strncmp (base_name, text, text_len) == 0
3653 add_filename_to_list (base_name, text, word,
3654 &list, &list_used, &list_alloced);
3658 ALL_PSYMTABS (objfile, ps)
3660 if (not_interesting_fname (ps->filename))
3664 if (!filename_seen (ps->filename, 1, &first)
3665 #if HAVE_DOS_BASED_FILE_SYSTEM
3666 && strncasecmp (ps->filename, text, text_len) == 0
3668 && strncmp (ps->filename, text, text_len) == 0
3672 /* This file matches for a completion; add it to the
3673 current list of matches. */
3674 add_filename_to_list (ps->filename, text, word,
3675 &list, &list_used, &list_alloced);
3680 base_name = lbasename (ps->filename);
3681 if (base_name != ps->filename
3682 && !filename_seen (base_name, 1, &first)
3683 #if HAVE_DOS_BASED_FILE_SYSTEM
3684 && strncasecmp (base_name, text, text_len) == 0
3686 && strncmp (base_name, text, text_len) == 0
3689 add_filename_to_list (base_name, text, word,
3690 &list, &list_used, &list_alloced);
3698 /* Determine if PC is in the prologue of a function. The prologue is the area
3699 between the first instruction of a function, and the first executable line.
3700 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3702 If non-zero, func_start is where we think the prologue starts, possibly
3703 by previous examination of symbol table information.
3707 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
3709 struct symtab_and_line sal;
3710 CORE_ADDR func_addr, func_end;
3712 /* We have several sources of information we can consult to figure
3714 - Compilers usually emit line number info that marks the prologue
3715 as its own "source line". So the ending address of that "line"
3716 is the end of the prologue. If available, this is the most
3718 - The minimal symbols and partial symbols, which can usually tell
3719 us the starting and ending addresses of a function.
3720 - If we know the function's start address, we can call the
3721 architecture-defined SKIP_PROLOGUE function to analyze the
3722 instruction stream and guess where the prologue ends.
3723 - Our `func_start' argument; if non-zero, this is the caller's
3724 best guess as to the function's entry point. At the time of
3725 this writing, handle_inferior_event doesn't get this right, so
3726 it should be our last resort. */
3728 /* Consult the partial symbol table, to find which function
3730 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3732 CORE_ADDR prologue_end;
3734 /* We don't even have minsym information, so fall back to using
3735 func_start, if given. */
3737 return 1; /* We *might* be in a prologue. */
3739 prologue_end = SKIP_PROLOGUE (func_start);
3741 return func_start <= pc && pc < prologue_end;
3744 /* If we have line number information for the function, that's
3745 usually pretty reliable. */
3746 sal = find_pc_line (func_addr, 0);
3748 /* Now sal describes the source line at the function's entry point,
3749 which (by convention) is the prologue. The end of that "line",
3750 sal.end, is the end of the prologue.
3752 Note that, for functions whose source code is all on a single
3753 line, the line number information doesn't always end up this way.
3754 So we must verify that our purported end-of-prologue address is
3755 *within* the function, not at its start or end. */
3757 || sal.end <= func_addr
3758 || func_end <= sal.end)
3760 /* We don't have any good line number info, so use the minsym
3761 information, together with the architecture-specific prologue
3763 CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr);
3765 return func_addr <= pc && pc < prologue_end;
3768 /* We have line number info, and it looks good. */
3769 return func_addr <= pc && pc < sal.end;
3773 /* Begin overload resolution functions */
3776 remove_params (const char *demangled_name)
3782 if (demangled_name == NULL)
3785 /* First find the end of the arg list. */
3786 argp = strrchr (demangled_name, ')');
3790 /* Back up to the beginning. */
3793 while (argp-- > demangled_name)
3797 else if (*argp == '(')
3806 internal_error (__FILE__, __LINE__,
3807 "bad demangled name %s\n", demangled_name);
3808 while (argp[-1] == ' ' && argp > demangled_name)
3811 new_name = xmalloc (argp - demangled_name + 1);
3812 memcpy (new_name, demangled_name, argp - demangled_name);
3813 new_name[argp - demangled_name] = '\0';
3817 /* Helper routine for make_symbol_completion_list. */
3819 static int sym_return_val_size;
3820 static int sym_return_val_index;
3821 static struct symbol **sym_return_val;
3823 /* Test to see if the symbol specified by SYMNAME (which is already
3824 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3825 characters. If so, add it to the current completion list. */
3828 overload_list_add_symbol (struct symbol *sym, char *oload_name)
3834 /* If there is no type information, we can't do anything, so skip */
3835 if (SYMBOL_TYPE (sym) == NULL)
3838 /* skip any symbols that we've already considered. */
3839 for (i = 0; i < sym_return_val_index; ++i)
3840 if (!strcmp (SYMBOL_NAME (sym), SYMBOL_NAME (sym_return_val[i])))
3843 /* Get the demangled name without parameters */
3844 sym_name = remove_params (SYMBOL_DEMANGLED_NAME (sym));
3848 /* skip symbols that cannot match */
3849 if (strcmp (sym_name, oload_name) != 0)
3857 /* We have a match for an overload instance, so add SYM to the current list
3858 * of overload instances */
3859 if (sym_return_val_index + 3 > sym_return_val_size)
3861 newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *);
3862 sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize);
3864 sym_return_val[sym_return_val_index++] = sym;
3865 sym_return_val[sym_return_val_index] = NULL;
3868 /* Return a null-terminated list of pointers to function symbols that
3869 * match name of the supplied symbol FSYM.
3870 * This is used in finding all overloaded instances of a function name.
3871 * This has been modified from make_symbol_completion_list. */
3875 make_symbol_overload_list (struct symbol *fsym)
3877 register struct symbol *sym;
3878 register struct symtab *s;
3879 register struct partial_symtab *ps;
3880 register struct objfile *objfile;
3881 register struct block *b, *surrounding_static_block = 0;
3883 /* The name we are completing on. */
3884 char *oload_name = NULL;
3885 /* Length of name. */
3886 int oload_name_len = 0;
3888 /* Look for the symbol we are supposed to complete on. */
3890 oload_name = remove_params (SYMBOL_DEMANGLED_NAME (fsym));
3893 sym_return_val_size = 1;
3894 sym_return_val = (struct symbol **) xmalloc (2 * sizeof (struct symbol *));
3895 sym_return_val[0] = fsym;
3896 sym_return_val[1] = NULL;
3898 return sym_return_val;
3900 oload_name_len = strlen (oload_name);
3902 sym_return_val_size = 100;
3903 sym_return_val_index = 0;
3904 sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *));
3905 sym_return_val[0] = NULL;
3907 /* Look through the partial symtabs for all symbols which begin
3908 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3910 ALL_PSYMTABS (objfile, ps)
3912 struct partial_symbol **psym;
3914 /* If the psymtab's been read in we'll get it when we search
3915 through the blockvector. */
3919 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3920 psym < (objfile->global_psymbols.list + ps->globals_offset
3921 + ps->n_global_syms);
3924 /* If interrupted, then quit. */
3926 /* This will cause the symbol table to be read if it has not yet been */
3927 s = PSYMTAB_TO_SYMTAB (ps);
3930 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3931 psym < (objfile->static_psymbols.list + ps->statics_offset
3932 + ps->n_static_syms);
3936 /* This will cause the symbol table to be read if it has not yet been */
3937 s = PSYMTAB_TO_SYMTAB (ps);
3941 /* Search upwards from currently selected frame (so that we can
3942 complete on local vars. */
3944 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3946 if (!BLOCK_SUPERBLOCK (b))
3948 surrounding_static_block = b; /* For elimination of dups */
3951 /* Also catch fields of types defined in this places which match our
3952 text string. Only complete on types visible from current context. */
3954 ALL_BLOCK_SYMBOLS (b, i, sym)
3956 overload_list_add_symbol (sym, oload_name);
3960 /* Go through the symtabs and check the externs and statics for
3961 symbols which match. */
3963 ALL_SYMTABS (objfile, s)
3966 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3967 ALL_BLOCK_SYMBOLS (b, i, sym)
3969 overload_list_add_symbol (sym, oload_name);
3973 ALL_SYMTABS (objfile, s)
3976 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3977 /* Don't do this block twice. */
3978 if (b == surrounding_static_block)
3980 ALL_BLOCK_SYMBOLS (b, i, sym)
3982 overload_list_add_symbol (sym, oload_name);
3988 return (sym_return_val);
3991 /* End of overload resolution functions */
3993 struct symtabs_and_lines
3994 decode_line_spec (char *string, int funfirstline)
3996 struct symtabs_and_lines sals;
3997 struct symtab_and_line cursal;
4000 error ("Empty line specification.");
4002 /* We use whatever is set as the current source line. We do not try
4003 and get a default or it will recursively call us! */
4004 cursal = get_current_source_symtab_and_line ();
4006 sals = decode_line_1 (&string, funfirstline,
4007 cursal.symtab, cursal.line,
4011 error ("Junk at end of line specification: %s", string);
4016 static char *name_of_main;
4019 set_main_name (const char *name)
4021 if (name_of_main != NULL)
4023 xfree (name_of_main);
4024 name_of_main = NULL;
4028 name_of_main = xstrdup (name);
4035 if (name_of_main != NULL)
4036 return name_of_main;
4043 _initialize_symtab (void)
4045 add_info ("variables", variables_info,
4046 "All global and static variable names, or those matching REGEXP.");
4048 add_com ("whereis", class_info, variables_info,
4049 "All global and static variable names, or those matching REGEXP.");
4051 add_info ("functions", functions_info,
4052 "All function names, or those matching REGEXP.");
4055 /* FIXME: This command has at least the following problems:
4056 1. It prints builtin types (in a very strange and confusing fashion).
4057 2. It doesn't print right, e.g. with
4058 typedef struct foo *FOO
4059 type_print prints "FOO" when we want to make it (in this situation)
4060 print "struct foo *".
4061 I also think "ptype" or "whatis" is more likely to be useful (but if
4062 there is much disagreement "info types" can be fixed). */
4063 add_info ("types", types_info,
4064 "All type names, or those matching REGEXP.");
4067 add_info ("methods", methods_info,
4068 "All method names, or those matching REGEXP::REGEXP.\n\
4069 If the class qualifier is omitted, it is assumed to be the current scope.\n\
4070 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4073 add_info ("sources", sources_info,
4074 "Source files in the program.");
4076 add_com ("rbreak", class_breakpoint, rbreak_command,
4077 "Set a breakpoint for all functions matching REGEXP.");
4081 add_com ("lf", class_info, sources_info, "Source files in the program");
4082 add_com ("lg", class_info, variables_info,
4083 "All global and static variable names, or those matching REGEXP.");
4086 /* Initialize the one built-in type that isn't language dependent... */
4087 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4088 "<unknown type>", (struct objfile *) NULL);