1 /* Symbol table lookup for the GNU debugger, GDB.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
31 #include "call-cmds.h"
33 #include "expression.h"
40 #include <sys/types.h>
46 /* Prototypes for local functions */
49 find_methods PARAMS ((struct type *, char *, struct symbol **));
52 completion_list_add_name PARAMS ((char *, char *, int, char *, char *));
55 build_canonical_line_spec PARAMS ((struct symtab_and_line *, char *, char ***));
57 static struct symtabs_and_lines
58 decode_line_2 PARAMS ((struct symbol *[], int, int, char ***));
61 rbreak_command PARAMS ((char *, int));
64 types_info PARAMS ((char *, int));
67 functions_info PARAMS ((char *, int));
70 variables_info PARAMS ((char *, int));
73 sources_info PARAMS ((char *, int));
76 list_symbols PARAMS ((char *, int, int));
79 output_source_filename PARAMS ((char *, int *));
82 operator_chars PARAMS ((char *, char **));
84 static int find_line_common PARAMS ((struct linetable *, int, int *));
86 static struct partial_symbol *
87 lookup_partial_symbol PARAMS ((struct partial_symtab *, const char *,
88 int, enum namespace));
90 static struct symtab *
91 lookup_symtab_1 PARAMS ((char *));
95 /* The single non-language-specific builtin type */
96 struct type *builtin_type_error;
98 /* Block in which the most recently searched-for symbol was found.
99 Might be better to make this a parameter to lookup_symbol and
102 const struct block *block_found;
104 char no_symtab_msg[] = "No symbol table is loaded. Use the \"file\" command.";
106 /* While the C++ support is still in flux, issue a possibly helpful hint on
107 using the new command completion feature on single quoted demangled C++
108 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
111 cplusplus_hint (name)
114 printf_unfiltered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name);
115 printf_unfiltered ("(Note leading single quote.)\n");
118 /* Check for a symtab of a specific name; first in symtabs, then in
119 psymtabs. *If* there is no '/' in the name, a match after a '/'
120 in the symtab filename will also work. */
122 static struct symtab *
123 lookup_symtab_1 (name)
126 register struct symtab *s;
127 register struct partial_symtab *ps;
128 register char *slash;
129 register struct objfile *objfile;
133 /* First, search for an exact match */
135 ALL_SYMTABS (objfile, s)
136 if (STREQ (name, s->filename))
139 slash = strchr (name, '/');
141 /* Now, search for a matching tail (only if name doesn't have any dirs) */
144 ALL_SYMTABS (objfile, s)
146 char *p = s -> filename;
147 char *tail = strrchr (p, '/');
156 /* Same search rules as above apply here, but now we look thru the
159 ps = lookup_partial_symtab (name);
164 error ("Internal: readin %s pst for `%s' found when no symtab found.",
165 ps -> filename, name);
167 s = PSYMTAB_TO_SYMTAB (ps);
172 /* At this point, we have located the psymtab for this file, but
173 the conversion to a symtab has failed. This usually happens
174 when we are looking up an include file. In this case,
175 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
176 been created. So, we need to run through the symtabs again in
177 order to find the file.
178 XXX - This is a crock, and should be fixed inside of the the
179 symbol parsing routines. */
183 /* Lookup the symbol table of a source file named NAME. Try a couple
184 of variations if the first lookup doesn't work. */
190 register struct symtab *s;
193 s = lookup_symtab_1 (name);
197 /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
200 /* If name not found as specified, see if adding ".c" helps. */
201 /* Why is this? Is it just a user convenience? (If so, it's pretty
202 questionable in the presence of C++, FORTRAN, etc.). It's not in
205 copy = (char *) alloca (strlen (name) + 3);
208 s = lookup_symtab_1 (copy);
212 /* We didn't find anything; die. */
216 /* Lookup the partial symbol table of a source file named NAME.
217 *If* there is no '/' in the name, a match after a '/'
218 in the psymtab filename will also work. */
220 struct partial_symtab *
221 lookup_partial_symtab (name)
224 register struct partial_symtab *pst;
225 register struct objfile *objfile;
227 ALL_PSYMTABS (objfile, pst)
229 if (STREQ (name, pst -> filename))
235 /* Now, search for a matching tail (only if name doesn't have any dirs) */
237 if (!strchr (name, '/'))
238 ALL_PSYMTABS (objfile, pst)
240 char *p = pst -> filename;
241 char *tail = strrchr (p, '/');
253 /* Demangle a GDB method stub type.
254 Note that this function is g++ specific. */
257 gdb_mangle_name (type, i, j)
261 int mangled_name_len;
263 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
264 struct fn_field *method = &f[j];
265 char *field_name = TYPE_FN_FIELDLIST_NAME (type, i);
266 char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
267 char *newname = type_name_no_tag (type);
269 /* Does the form of physname indicate that it is the full mangled name
270 of a constructor (not just the args)? */
271 int is_full_physname_constructor;
274 int is_destructor = DESTRUCTOR_PREFIX_P (physname);
275 /* Need a new type prefix. */
276 char *const_prefix = method->is_const ? "C" : "";
277 char *volatile_prefix = method->is_volatile ? "V" : "";
279 int len = (newname == NULL ? 0 : strlen (newname));
281 is_full_physname_constructor =
282 ((physname[0]=='_' && physname[1]=='_' &&
283 (isdigit(physname[2]) || physname[2]=='Q' || physname[2]=='t'))
284 || (strncmp(physname, "__ct", 4) == 0));
287 is_full_physname_constructor || (newname && STREQ(field_name, newname));
290 is_destructor = (strncmp(physname, "__dt", 4) == 0);
292 #ifndef GCC_MANGLE_BUG
293 if (is_destructor || is_full_physname_constructor)
295 mangled_name = (char*) xmalloc(strlen(physname)+1);
296 strcpy(mangled_name, physname);
302 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
303 if (strcmp(buf, "__") == 0)
308 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
310 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
315 /* Only needed for GNU-mangled names. ANSI-mangled names
316 work with the normal mechanisms. */
317 if (OPNAME_PREFIX_P (field_name))
319 char *opname = cplus_mangle_opname (field_name + 3, 0);
321 error ("No mangling for \"%s\"", field_name);
322 mangled_name_len += strlen (opname);
323 mangled_name = (char *)xmalloc (mangled_name_len);
325 strncpy (mangled_name, field_name, 3);
326 mangled_name[3] = '\0';
327 strcat (mangled_name, opname);
331 mangled_name = (char *)xmalloc (mangled_name_len);
333 mangled_name[0] = '\0';
335 strcpy (mangled_name, field_name);
337 strcat (mangled_name, buf);
338 /* If the class doesn't have a name, i.e. newname NULL, then we just
339 mangle it using 0 for the length of the class. Thus it gets mangled
340 as something starting with `::' rather than `classname::'. */
342 strcat (mangled_name, newname);
352 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
355 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
356 + strlen (buf) + strlen (physname) + 1);
358 /* Only needed for GNU-mangled names. ANSI-mangled names
359 work with the normal mechanisms. */
360 if (OPNAME_PREFIX_P (field_name))
363 opname = cplus_mangle_opname (field_name + 3, 0);
366 error ("No mangling for \"%s\"", field_name);
368 mangled_name_len += strlen (opname);
369 mangled_name = (char *) xmalloc (mangled_name_len);
371 strncpy (mangled_name, field_name, 3);
372 strcpy (mangled_name + 3, opname);
376 mangled_name = (char *) xmalloc (mangled_name_len);
379 mangled_name[0] = '\0';
383 strcpy (mangled_name, field_name);
386 strcat (mangled_name, buf);
389 strcat (mangled_name, physname);
390 return (mangled_name);
394 /* Find which partial symtab on contains PC. Return 0 if none. */
396 struct partial_symtab *
398 register CORE_ADDR pc;
400 register struct partial_symtab *pst;
401 register struct objfile *objfile;
403 ALL_PSYMTABS (objfile, pst)
405 if (pc >= pst->textlow && pc < pst->texthigh)
411 /* Find which partial symbol within a psymtab contains PC. Return 0
412 if none. Check all psymtabs if PSYMTAB is 0. */
413 struct partial_symbol *
414 find_pc_psymbol (psymtab, pc)
415 struct partial_symtab *psymtab;
418 struct partial_symbol *best = NULL, *p;
422 psymtab = find_pc_psymtab (pc);
426 best_pc = psymtab->textlow - 1;
428 /* Search the global symbols as well as the static symbols, so that
429 find_pc_partial_function doesn't use a minimal symbol and thus
430 cache a bad endaddr. */
431 for (p = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
432 (p - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
433 < psymtab->n_global_syms);
435 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
436 && SYMBOL_CLASS (p) == LOC_BLOCK
437 && pc >= SYMBOL_VALUE_ADDRESS (p)
438 && SYMBOL_VALUE_ADDRESS (p) > best_pc)
440 best_pc = SYMBOL_VALUE_ADDRESS (p);
443 for (p = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
444 (p - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
445 < psymtab->n_static_syms);
447 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
448 && SYMBOL_CLASS (p) == LOC_BLOCK
449 && pc >= SYMBOL_VALUE_ADDRESS (p)
450 && SYMBOL_VALUE_ADDRESS (p) > best_pc)
452 best_pc = SYMBOL_VALUE_ADDRESS (p);
455 if (best_pc == psymtab->textlow - 1)
461 /* Find the definition for a specified symbol name NAME
462 in namespace NAMESPACE, visible from lexical block BLOCK.
463 Returns the struct symbol pointer, or zero if no symbol is found.
464 If SYMTAB is non-NULL, store the symbol table in which the
465 symbol was found there, or NULL if not found.
466 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
467 NAME is a field of the current implied argument `this'. If so set
468 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
469 BLOCK_FOUND is set to the block in which NAME is found (in the case of
470 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
473 lookup_symbol (name, block, namespace, is_a_field_of_this, symtab)
475 register const struct block *block;
476 const enum namespace namespace;
477 int *is_a_field_of_this;
478 struct symtab **symtab;
480 register struct symbol *sym;
481 register struct symtab *s = NULL;
482 register struct partial_symtab *ps;
483 struct blockvector *bv;
484 register struct objfile *objfile;
485 register struct block *b;
486 register struct minimal_symbol *msymbol;
488 /* Search specified block and its superiors. */
492 sym = lookup_block_symbol (block, name, namespace);
498 /* Search the list of symtabs for one which contains the
499 address of the start of this block. */
500 ALL_SYMTABS (objfile, s)
502 bv = BLOCKVECTOR (s);
503 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
504 if (BLOCK_START (b) <= BLOCK_START (block)
505 && BLOCK_END (b) > BLOCK_START (block))
514 block = BLOCK_SUPERBLOCK (block);
517 /* FIXME: this code is never executed--block is always NULL at this
518 point. What is it trying to do, anyway? We already should have
519 checked the STATIC_BLOCK above (it is the superblock of top-level
520 blocks). Why is VAR_NAMESPACE special-cased? */
521 /* Don't need to mess with the psymtabs; if we have a block,
522 that file is read in. If we don't, then we deal later with
523 all the psymtab stuff that needs checking. */
524 if (namespace == VAR_NAMESPACE && block != NULL)
527 /* Find the right symtab. */
528 ALL_SYMTABS (objfile, s)
530 bv = BLOCKVECTOR (s);
531 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
532 if (BLOCK_START (b) <= BLOCK_START (block)
533 && BLOCK_END (b) > BLOCK_START (block))
535 sym = lookup_block_symbol (b, name, VAR_NAMESPACE);
548 /* C++: If requested to do so by the caller,
549 check to see if NAME is a field of `this'. */
550 if (is_a_field_of_this)
552 struct value *v = value_of_this (0);
554 *is_a_field_of_this = 0;
555 if (v && check_field (v, name))
557 *is_a_field_of_this = 1;
564 /* Now search all global blocks. Do the symtab's first, then
565 check the psymtab's */
567 ALL_SYMTABS (objfile, s)
569 bv = BLOCKVECTOR (s);
570 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
571 sym = lookup_block_symbol (block, name, namespace);
581 /* Check for the possibility of the symbol being a global function
582 that is stored in one of the minimal symbol tables. Eventually, all
583 global symbols might be resolved in this way. */
585 if (namespace == VAR_NAMESPACE)
587 msymbol = lookup_minimal_symbol (name, (struct objfile *) NULL);
590 s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol));
591 /* If S is NULL, there are no debug symbols for this file.
592 Skip this stuff and check for matching static symbols below. */
595 bv = BLOCKVECTOR (s);
596 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
597 sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol),
599 /* We kept static functions in minimal symbol table as well as
600 in static scope. We want to find them in the symbol table. */
602 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
603 sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol),
607 /* sym == 0 if symbol was found in the minimal symbol table
608 but not in the symtab.
609 Return 0 to use the msymbol definition of "foo_".
611 This happens for Fortran "foo_" symbols,
612 which are "foo" in the symtab.
614 This can also happen if "asm" is used to make a
615 regular symbol but not a debugging symbol, e.g.
627 ALL_PSYMTABS (objfile, ps)
629 if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace))
631 s = PSYMTAB_TO_SYMTAB(ps);
632 bv = BLOCKVECTOR (s);
633 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
634 sym = lookup_block_symbol (block, name, namespace);
636 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab", name, ps->filename);
643 /* Now search all per-file blocks.
644 Not strictly correct, but more useful than an error.
645 Do the symtabs first, then check the psymtabs */
647 ALL_SYMTABS (objfile, s)
649 bv = BLOCKVECTOR (s);
650 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
651 sym = lookup_block_symbol (block, name, namespace);
661 ALL_PSYMTABS (objfile, ps)
663 if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace))
665 s = PSYMTAB_TO_SYMTAB(ps);
666 bv = BLOCKVECTOR (s);
667 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
668 sym = lookup_block_symbol (block, name, namespace);
670 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab", name, ps->filename);
677 /* Now search all per-file blocks for static mangled symbols.
678 Do the symtabs first, then check the psymtabs. */
680 if (namespace == VAR_NAMESPACE)
682 ALL_SYMTABS (objfile, s)
684 bv = BLOCKVECTOR (s);
685 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
686 sym = lookup_block_symbol (block, name, VAR_NAMESPACE);
696 ALL_PSYMTABS (objfile, ps)
698 if (!ps->readin && lookup_partial_symbol (ps, name, 0, VAR_NAMESPACE))
700 s = PSYMTAB_TO_SYMTAB(ps);
701 bv = BLOCKVECTOR (s);
702 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
703 sym = lookup_block_symbol (block, name, VAR_NAMESPACE);
705 error ("Internal: mangled static symbol `%s' found in %s psymtab but not in symtab", name, ps->filename);
718 /* Look, in partial_symtab PST, for symbol NAME. Check the global
719 symbols if GLOBAL, the static symbols if not */
721 static struct partial_symbol *
722 lookup_partial_symbol (pst, name, global, namespace)
723 struct partial_symtab *pst;
726 enum namespace namespace;
728 struct partial_symbol *start, *psym;
729 struct partial_symbol *top, *bottom, *center;
730 int length = (global ? pst->n_global_syms : pst->n_static_syms);
731 int do_linear_search = 1;
739 pst->objfile->global_psymbols.list + pst->globals_offset :
740 pst->objfile->static_psymbols.list + pst->statics_offset );
742 if (global) /* This means we can use a binary search. */
744 do_linear_search = 0;
746 /* Binary search. This search is guaranteed to end with center
747 pointing at the earliest partial symbol with the correct
748 name. At that point *all* partial symbols with that name
749 will be checked against the correct namespace. */
752 top = start + length - 1;
755 center = bottom + (top - bottom) / 2;
756 assert (center < top);
757 if (!do_linear_search && SYMBOL_LANGUAGE (center) == language_cplus)
759 do_linear_search = 1;
761 if (STRCMP (SYMBOL_NAME (center), name) >= 0)
770 assert (top == bottom);
771 while (STREQ (SYMBOL_NAME (top), name))
773 if (SYMBOL_NAMESPACE (top) == namespace)
781 /* Can't use a binary search or else we found during the binary search that
782 we should also do a linear search. */
784 if (do_linear_search)
786 for (psym = start; psym < start + length; psym++)
788 if (namespace == SYMBOL_NAMESPACE (psym))
790 if (SYMBOL_MATCHES_NAME (psym, name))
801 /* Find the psymtab containing main(). */
802 /* FIXME: What about languages without main() or specially linked
803 executables that have no main() ? */
805 struct partial_symtab *
808 register struct partial_symtab *pst;
809 register struct objfile *objfile;
811 ALL_PSYMTABS (objfile, pst)
813 if (lookup_partial_symbol (pst, "main", 1, VAR_NAMESPACE))
821 /* Search BLOCK for symbol NAME in NAMESPACE.
823 Note that if NAME is the demangled form of a C++ symbol, we will fail
824 to find a match during the binary search of the non-encoded names, but
825 for now we don't worry about the slight inefficiency of looking for
826 a match we'll never find, since it will go pretty quick. Once the
827 binary search terminates, we drop through and do a straight linear
828 search on the symbols. Each symbol which is marked as being a C++
829 symbol (language_cplus set) has both the encoded and non-encoded names
830 tested for a match. */
833 lookup_block_symbol (block, name, namespace)
834 register const struct block *block;
836 const enum namespace namespace;
838 register int bot, top, inc;
839 register struct symbol *sym;
840 register struct symbol *sym_found = NULL;
841 register int do_linear_search = 1;
843 /* If the blocks's symbols were sorted, start with a binary search. */
845 if (BLOCK_SHOULD_SORT (block))
847 /* Reset the linear search flag so if the binary search fails, we
848 won't do the linear search once unless we find some reason to
849 do so, such as finding a C++ symbol during the binary search.
850 Note that for C++ modules, ALL the symbols in a block should
851 end up marked as C++ symbols. */
853 do_linear_search = 0;
854 top = BLOCK_NSYMS (block);
857 /* Advance BOT to not far before the first symbol whose name is NAME. */
861 inc = (top - bot + 1);
862 /* No need to keep binary searching for the last few bits worth. */
867 inc = (inc >> 1) + bot;
868 sym = BLOCK_SYM (block, inc);
869 if (!do_linear_search && SYMBOL_LANGUAGE (sym) == language_cplus)
871 do_linear_search = 1;
873 if (SYMBOL_NAME (sym)[0] < name[0])
877 else if (SYMBOL_NAME (sym)[0] > name[0])
881 else if (STRCMP (SYMBOL_NAME (sym), name) < 0)
891 /* Now scan forward until we run out of symbols, find one whose
892 name is greater than NAME, or find one we want. If there is
893 more than one symbol with the right name and namespace, we
894 return the first one; I believe it is now impossible for us
895 to encounter two symbols with the same name and namespace
896 here, because blocks containing argument symbols are no
899 top = BLOCK_NSYMS (block);
902 sym = BLOCK_SYM (block, bot);
903 inc = SYMBOL_NAME (sym)[0] - name[0];
906 inc = STRCMP (SYMBOL_NAME (sym), name);
908 if (inc == 0 && SYMBOL_NAMESPACE (sym) == namespace)
920 /* Here if block isn't sorted, or we fail to find a match during the
921 binary search above. If during the binary search above, we find a
922 symbol which is a C++ symbol, then we have re-enabled the linear
923 search flag which was reset when starting the binary search.
925 This loop is equivalent to the loop above, but hacked greatly for speed.
927 Note that parameter symbols do not always show up last in the
928 list; this loop makes sure to take anything else other than
929 parameter symbols first; it only uses parameter symbols as a
930 last resort. Note that this only takes up extra computation
933 if (do_linear_search)
935 top = BLOCK_NSYMS (block);
939 sym = BLOCK_SYM (block, bot);
940 if (SYMBOL_NAMESPACE (sym) == namespace &&
941 SYMBOL_MATCHES_NAME (sym, name))
944 if (SYMBOL_CLASS (sym) != LOC_ARG &&
945 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
946 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
947 SYMBOL_CLASS (sym) != LOC_REGPARM &&
948 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
949 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG)
957 return (sym_found); /* Will be NULL if not found. */
961 /* Return the symbol for the function which contains a specified
962 lexical block, described by a struct block BL. */
968 while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
969 bl = BLOCK_SUPERBLOCK (bl);
971 return BLOCK_FUNCTION (bl);
974 /* Find the symtab associated with PC. Look through the psymtabs and read in
975 another symtab if necessary. */
979 register CORE_ADDR pc;
981 register struct block *b;
982 struct blockvector *bv;
983 register struct symtab *s = NULL;
984 register struct symtab *best_s = NULL;
985 register struct partial_symtab *ps;
986 register struct objfile *objfile;
989 /* Search all symtabs for the one whose file contains our address, and which
990 is the smallest of all the ones containing the address. This is designed
991 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
992 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
993 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
994 This is said to happen for the mips; it might be swifter to create
995 several symtabs with the same name like xcoff does (I'm not sure). */
997 ALL_SYMTABS (objfile, s)
999 bv = BLOCKVECTOR (s);
1000 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1001 if (BLOCK_START (b) <= pc
1002 && BLOCK_END (b) > pc
1004 || BLOCK_END (b) - BLOCK_START (b) < distance))
1006 distance = BLOCK_END (b) - BLOCK_START (b);
1015 ps = find_pc_psymtab (pc);
1019 /* Might want to error() here (in case symtab is corrupt and
1020 will cause a core dump), but maybe we can successfully
1021 continue, so let's not. */
1023 (Internal error: pc 0x%lx in read in psymtab, but not in symtab.)\n",
1024 (unsigned long) pc);
1025 s = PSYMTAB_TO_SYMTAB (ps);
1030 /* Find the closest symbol value (of any sort -- function or variable)
1031 for a given address value. Slow but complete. */
1034 find_addr_symbol (addr)
1037 struct symtab *symtab;
1038 struct objfile *objfile;
1039 register int bot, top;
1040 register struct symbol *sym;
1041 register CORE_ADDR sym_addr;
1042 struct block *block;
1045 /* Info on best symbol seen so far */
1047 register CORE_ADDR best_sym_addr = 0;
1048 struct symbol *best_sym = 0;
1050 /* FIXME -- we should pull in all the psymtabs, too! */
1051 ALL_SYMTABS (objfile, symtab)
1053 /* Search the global and static blocks in this symtab for
1054 the closest symbol-address to the desired address. */
1056 for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++)
1059 block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum);
1060 top = BLOCK_NSYMS (block);
1061 for (bot = 0; bot < top; bot++)
1063 sym = BLOCK_SYM (block, bot);
1064 switch (SYMBOL_CLASS (sym))
1068 sym_addr = SYMBOL_VALUE_ADDRESS (sym);
1072 sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1079 if (sym_addr <= addr)
1080 if (sym_addr > best_sym_addr)
1082 /* Quit if we found an exact match. */
1083 if (sym_addr == addr)
1086 best_sym_addr = sym_addr;
1095 /* Find the source file and line number for a given PC value.
1096 Return a structure containing a symtab pointer, a line number,
1097 and a pc range for the entire source line.
1098 The value's .pc field is NOT the specified pc.
1099 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1100 use the line that ends there. Otherwise, in that case, the line
1101 that begins there is used. */
1103 /* The big complication here is that a line may start in one file, and end just
1104 before the start of another file. This usually occurs when you #include
1105 code in the middle of a subroutine. To properly find the end of a line's PC
1106 range, we must search all symtabs associated with this compilation unit, and
1107 find the one whose first PC is closer than that of the next line in this
1110 /* If it's worth the effort, we could be using a binary search. */
1112 struct symtab_and_line
1113 find_pc_line (pc, notcurrent)
1118 register struct linetable *l;
1121 register struct linetable_entry *item;
1122 struct symtab_and_line val;
1123 struct blockvector *bv;
1125 /* Info on best line seen so far, and where it starts, and its file. */
1127 struct linetable_entry *best = NULL;
1128 CORE_ADDR best_end = 0;
1129 struct symtab *best_symtab = 0;
1131 /* Store here the first line number
1132 of a file which contains the line at the smallest pc after PC.
1133 If we don't find a line whose range contains PC,
1134 we will use a line one less than this,
1135 with a range from the start of that file to the first line's pc. */
1136 struct linetable_entry *alt = NULL;
1137 struct symtab *alt_symtab = 0;
1139 /* Info on best line seen in this file. */
1141 struct linetable_entry *prev;
1143 /* If this pc is not from the current frame,
1144 it is the address of the end of a call instruction.
1145 Quite likely that is the start of the following statement.
1146 But what we want is the statement containing the instruction.
1147 Fudge the pc to make sure we get that. */
1149 if (notcurrent) pc -= 1;
1151 s = find_pc_symtab (pc);
1161 bv = BLOCKVECTOR (s);
1163 /* Look at all the symtabs that share this blockvector.
1164 They all have the same apriori range, that we found was right;
1165 but they have different line tables. */
1167 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
1169 /* Find the best line in this symtab. */
1176 /* I think len can be zero if the symtab lacks line numbers
1177 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1178 I'm not sure which, and maybe it depends on the symbol
1184 item = l->item; /* Get first line info */
1186 /* Is this file's first line closer than the first lines of other files?
1187 If so, record this file, and its first line, as best alternate. */
1188 if (item->pc > pc && (!alt || item->pc < alt->pc))
1194 for (i = 0; i < len; i++, item++)
1196 /* Return the last line that did not start after PC. */
1203 /* At this point, prev points at the line whose start addr is <= pc, and
1204 item points at the next line. If we ran off the end of the linetable
1205 (pc >= start of the last line), then prev == item. If pc < start of
1206 the first line, prev will not be set. */
1208 /* Is this file's best line closer than the best in the other files?
1209 If so, record this file, and its best line, as best so far. */
1211 if (prev && (!best || prev->pc > best->pc))
1215 /* If another line is in the linetable, and its PC is closer
1216 than the best_end we currently have, take it as best_end. */
1217 if (i < len && (best_end == 0 || best_end > item->pc))
1218 best_end = item->pc;
1225 { /* If we didn't find any line # info, just
1234 val.symtab = alt_symtab;
1235 val.line = alt->line - 1;
1236 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
1242 val.symtab = best_symtab;
1243 val.line = best->line;
1245 if (best_end && (!alt || best_end < alt->pc))
1250 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
1255 static int find_line_symtab PARAMS ((struct symtab *, int, struct linetable **,
1258 /* Find line number LINE in any symtab whose name is the same as
1261 If found, return 1, set *LINETABLE to the linetable in which it was
1262 found, set *INDEX to the index in the linetable of the best entry
1263 found, and set *EXACT_MATCH nonzero if the value returned is an
1266 If not found, return 0. */
1269 find_line_symtab (symtab, line, linetable, index, exact_match)
1270 struct symtab *symtab;
1272 struct linetable **linetable;
1278 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1282 struct linetable *best_linetable;
1284 /* First try looking it up in the given symtab. */
1285 best_linetable = LINETABLE (symtab);
1286 best_index = find_line_common (best_linetable, line, &exact);
1287 if (best_index < 0 || !exact)
1289 /* Didn't find an exact match. So we better keep looking for
1290 another symtab with the same name. In the case of xcoff,
1291 multiple csects for one source file (produced by IBM's FORTRAN
1292 compiler) produce multiple symtabs (this is unavoidable
1293 assuming csects can be at arbitrary places in memory and that
1294 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1296 /* BEST is the smallest linenumber > LINE so far seen,
1297 or 0 if none has been seen so far.
1298 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1301 struct objfile *objfile;
1304 if (best_index >= 0)
1305 best = best_linetable->item[best_index].line;
1309 ALL_SYMTABS (objfile, s)
1311 struct linetable *l;
1314 if (!STREQ (symtab->filename, s->filename))
1317 ind = find_line_common (l, line, &exact);
1326 if (best == 0 || l->item[ind].line < best)
1328 best = l->item[ind].line;
1340 *index = best_index;
1342 *linetable = best_linetable;
1344 *exact_match = exact;
1348 /* Find the PC value for a given source file and line number.
1349 Returns zero for invalid line number.
1350 The source file is specified with a struct symtab. */
1353 find_line_pc (symtab, line)
1354 struct symtab *symtab;
1357 struct linetable *l;
1362 if (find_line_symtab (symtab, line, &l, &ind, NULL))
1363 return l->item[ind].pc;
1368 /* Find the range of pc values in a line.
1369 Store the starting pc of the line into *STARTPTR
1370 and the ending pc (start of next line) into *ENDPTR.
1371 Returns 1 to indicate success.
1372 Returns 0 if could not find the specified line. */
1375 find_line_pc_range (sal, startptr, endptr)
1376 struct symtab_and_line sal;
1377 CORE_ADDR *startptr, *endptr;
1379 CORE_ADDR startaddr;
1380 struct symtab_and_line found_sal;
1385 startaddr = find_line_pc (sal.symtab, sal.line);
1390 /* This whole function is based on address. For example, if line 10 has
1391 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1392 "info line *0x123" should say the line goes from 0x100 to 0x200
1393 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1394 This also insures that we never give a range like "starts at 0x134
1395 and ends at 0x12c". */
1397 found_sal = find_pc_line (startaddr, 0);
1398 if (found_sal.line != sal.line)
1400 /* The specified line (sal) has zero bytes. */
1401 *startptr = found_sal.pc;
1402 *endptr = found_sal.pc;
1406 *startptr = found_sal.pc;
1407 *endptr = found_sal.end;
1412 /* Given a line table and a line number, return the index into the line
1413 table for the pc of the nearest line whose number is >= the specified one.
1414 Return -1 if none is found. The value is >= 0 if it is an index.
1416 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
1419 find_line_common (l, lineno, exact_match)
1420 register struct linetable *l;
1421 register int lineno;
1427 /* BEST is the smallest linenumber > LINENO so far seen,
1428 or 0 if none has been seen so far.
1429 BEST_INDEX identifies the item for it. */
1431 int best_index = -1;
1440 for (i = 0; i < len; i++)
1442 register struct linetable_entry *item = &(l->item[i]);
1444 if (item->line == lineno)
1446 /* Return the first (lowest address) entry which matches. */
1451 if (item->line > lineno && (best == 0 || item->line < best))
1458 /* If we got here, we didn't get an exact match. */
1465 find_pc_line_pc_range (pc, startptr, endptr)
1467 CORE_ADDR *startptr, *endptr;
1469 struct symtab_and_line sal;
1470 sal = find_pc_line (pc, 0);
1473 return sal.symtab != 0;
1476 /* If P is of the form "operator[ \t]+..." where `...' is
1477 some legitimate operator text, return a pointer to the
1478 beginning of the substring of the operator text.
1479 Otherwise, return "". */
1481 operator_chars (p, end)
1486 if (strncmp (p, "operator", 8))
1490 /* Don't get faked out by `operator' being part of a longer
1492 if (isalpha(*p) || *p == '_' || *p == '$' || *p == '\0')
1495 /* Allow some whitespace between `operator' and the operator symbol. */
1496 while (*p == ' ' || *p == '\t')
1499 /* Recognize 'operator TYPENAME'. */
1501 if (isalpha(*p) || *p == '_' || *p == '$')
1503 register char *q = p+1;
1504 while (isalnum(*q) || *q == '_' || *q == '$')
1529 if (p[1] == '=' || p[1] == p[0])
1540 error ("`operator ()' must be specified without whitespace in `()'");
1545 error ("`operator ?:' must be specified without whitespace in `?:'");
1550 error ("`operator []' must be specified without whitespace in `[]'");
1554 error ("`operator %s' not supported", p);
1561 /* Recursive helper function for decode_line_1.
1562 * Look for methods named NAME in type T.
1563 * Return number of matches.
1564 * Put matches in SYM_ARR (which better be big enough!).
1565 * These allocations seem to define "big enough":
1566 * sym_arr = (struct symbol **) alloca(TYPE_NFN_FIELDS_TOTAL (t) * sizeof(struct symbol*));
1567 * Note that this function is g++ specific.
1571 find_methods (t, name, sym_arr)
1574 struct symbol **sym_arr;
1578 struct symbol *sym_class;
1579 char *class_name = type_name_no_tag (t);
1580 /* Ignore this class if it doesn't have a name. This is ugly, but
1581 unless we figure out how to get the physname without the name of
1582 the class, then the loop can't do any good. */
1584 && (sym_class = lookup_symbol (class_name,
1585 (struct block *)NULL,
1588 (struct symtab **)NULL)))
1591 /* FIXME: Shouldn't this just be check_stub_type (t)? */
1592 t = SYMBOL_TYPE (sym_class);
1593 for (method_counter = TYPE_NFN_FIELDS (t) - 1;
1594 method_counter >= 0;
1598 struct fn_field *f = TYPE_FN_FIELDLIST1 (t, method_counter);
1599 char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
1600 char dem_opname[64];
1602 if (strncmp(method_name, "__", 2)==0 ||
1603 strncmp(method_name, "op", 2)==0 ||
1604 strncmp(method_name, "type", 4)==0 )
1606 if (cplus_demangle_opname(method_name, dem_opname, DMGL_ANSI))
1607 method_name = dem_opname;
1608 else if (cplus_demangle_opname(method_name, dem_opname, 0))
1609 method_name = dem_opname;
1611 if (STREQ (name, method_name))
1612 /* Find all the fields with that name. */
1613 for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
1618 if (TYPE_FN_FIELD_STUB (f, field_counter))
1619 check_stub_method (t, method_counter, field_counter);
1620 phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
1621 /* Destructor is handled by caller, dont add it to the list */
1622 if (DESTRUCTOR_PREFIX_P (phys_name))
1625 /* FIXME: Why are we looking this up in the
1626 SYMBOL_BLOCK_VALUE (sym_class)? It is intended as a hook
1627 for nested types? If so, it should probably hook to the
1628 type, not the symbol. mipsread.c is the only symbol
1629 reader which sets the SYMBOL_BLOCK_VALUE for types, and
1630 this is not documented in symtab.h. -26Aug93. */
1632 sym_arr[i1] = lookup_symbol (phys_name,
1633 SYMBOL_BLOCK_VALUE (sym_class),
1636 (struct symtab **) NULL);
1637 if (sym_arr[i1]) i1++;
1640 fputs_filtered("(Cannot find method ", gdb_stdout);
1641 fprintf_symbol_filtered (gdb_stdout, phys_name,
1643 DMGL_PARAMS | DMGL_ANSI);
1644 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
1650 /* Only search baseclasses if there is no match yet, since names in
1651 derived classes override those in baseclasses.
1653 FIXME: The above is not true; it is only true of member functions
1654 if they have the same number of arguments (??? - section 13.1 of the
1655 ARM says the function members are not in the same scope but doesn't
1656 really spell out the rules in a way I understand. In any case, if
1657 the number of arguments differ this is a case in which we can overload
1658 rather than hiding without any problem, and gcc 2.4.5 does overload
1659 rather than hiding in this case). */
1663 for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
1664 i1 += find_methods(TYPE_BASECLASS(t, ibase), name,
1669 /* Helper function for decode_line_1.
1670 Build a canonical line spec in CANONICAL if it is non-NULL and if
1671 the SAL has a symtab.
1672 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
1673 If SYMNAME is NULL the line number from SAL is used and the canonical
1674 line spec is `filename:linenum'. */
1677 build_canonical_line_spec (sal, symname, canonical)
1678 struct symtab_and_line *sal;
1682 char **canonical_arr;
1683 char *canonical_name;
1685 struct symtab *s = sal->symtab;
1687 if (s == (struct symtab *)NULL
1688 || s->filename == (char *)NULL
1689 || canonical == (char ***)NULL)
1692 canonical_arr = (char **) xmalloc (sizeof (char *));
1693 *canonical = canonical_arr;
1695 filename = s->filename;
1696 if (symname != NULL)
1698 canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2);
1699 sprintf (canonical_name, "%s:%s", filename, symname);
1703 canonical_name = xmalloc (strlen (filename) + 30);
1704 sprintf (canonical_name, "%s:%d", filename, sal->line);
1706 canonical_arr[0] = canonical_name;
1709 /* Parse a string that specifies a line number.
1710 Pass the address of a char * variable; that variable will be
1711 advanced over the characters actually parsed.
1715 LINENUM -- that line number in current file. PC returned is 0.
1716 FILE:LINENUM -- that line in that file. PC returned is 0.
1717 FUNCTION -- line number of openbrace of that function.
1718 PC returned is the start of the function.
1719 VARIABLE -- line number of definition of that variable.
1721 FILE:FUNCTION -- likewise, but prefer functions in that file.
1722 *EXPR -- line in which address EXPR appears.
1724 FUNCTION may be an undebuggable function found in minimal symbol table.
1726 If the argument FUNFIRSTLINE is nonzero, we want the first line
1727 of real code inside a function when a function is specified.
1729 DEFAULT_SYMTAB specifies the file to use if none is specified.
1730 It defaults to current_source_symtab.
1731 DEFAULT_LINE specifies the line number to use for relative
1732 line numbers (that start with signs). Defaults to current_source_line.
1733 If CANONICAL is non-NULL, store an array of strings containing the canonical
1734 line specs there if necessary. Currently overloaded member functions and
1735 line numbers or static functions without a filename yield a canonical
1736 line spec. The array and the line spec strings are allocated on the heap,
1737 it is the callers responsibility to free them.
1739 Note that it is possible to return zero for the symtab
1740 if no file is validly specified. Callers must check that.
1741 Also, the line number returned may be invalid. */
1743 /* We allow single quotes in various places. This is a hideous
1744 kludge, which exists because the completer can't yet deal with the
1745 lack of single quotes. FIXME: write a linespec_completer which we
1746 can use as appropriate instead of make_symbol_completion_list. */
1748 struct symtabs_and_lines
1749 decode_line_1 (argptr, funfirstline, default_symtab, default_line, canonical)
1752 struct symtab *default_symtab;
1756 struct symtabs_and_lines values;
1757 #ifdef HPPA_COMPILER_BUG
1758 /* FIXME: The native HP 9000/700 compiler has a bug which appears
1759 when optimizing this file with target i960-vxworks. I haven't
1760 been able to construct a simple test case. The problem is that
1761 in the second call to SKIP_PROLOGUE below, the compiler somehow
1762 does not realize that the statement val = find_pc_line (...) will
1763 change the values of the fields of val. It extracts the elements
1764 into registers at the top of the block, and does not update the
1765 registers after the call to find_pc_line. You can check this by
1766 inserting a printf at the end of find_pc_line to show what values
1767 it is returning for val.pc and val.end and another printf after
1768 the call to see what values the function actually got (remember,
1769 this is compiling with cc -O, with this patch removed). You can
1770 also examine the assembly listing: search for the second call to
1771 skip_prologue; the LDO statement before the next call to
1772 find_pc_line loads the address of the structure which
1773 find_pc_line will return; if there is a LDW just before the LDO,
1774 which fetches an element of the structure, then the compiler
1777 Setting val to volatile avoids the problem. We must undef
1778 volatile, because the HPPA native compiler does not define
1779 __STDC__, although it does understand volatile, and so volatile
1780 will have been defined away in defs.h. */
1782 volatile struct symtab_and_line val;
1783 #define volatile /*nothing*/
1785 struct symtab_and_line val;
1787 register char *p, *p1;
1789 register struct symtab *s;
1791 register struct symbol *sym;
1792 /* The symtab that SYM was found in. */
1793 struct symtab *sym_symtab;
1795 register CORE_ADDR pc;
1796 register struct minimal_symbol *msymbol;
1798 struct symbol *sym_class;
1800 int is_quoted, has_parens;
1801 struct symbol **sym_arr;
1803 char *saved_arg = *argptr;
1804 extern char *gdb_completer_quote_characters;
1806 /* Defaults have defaults. */
1808 if (default_symtab == 0)
1810 default_symtab = current_source_symtab;
1811 default_line = current_source_line;
1814 /* See if arg is *PC */
1816 if (**argptr == '*')
1818 if (**argptr == '*')
1822 pc = parse_and_eval_address_1 (argptr);
1823 values.sals = (struct symtab_and_line *)
1824 xmalloc (sizeof (struct symtab_and_line));
1826 values.sals[0] = find_pc_line (pc, 0);
1827 values.sals[0].pc = pc;
1828 build_canonical_line_spec (values.sals, NULL, canonical);
1832 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
1835 is_quoted = (strchr(gdb_completer_quote_characters, **argptr) != NULL);
1836 has_parens = (( pp = strchr(*argptr, '(')) != NULL &&
1837 (pp = strchr(pp, ')')) != NULL);
1839 for (p = *argptr; *p; p++)
1843 while(!++p && *p != '>');
1846 /* FIXME: Why warning() and then return_to_top_level?
1847 What's wrong with error()? */
1848 warning("non-matching '<' and '>' in command");
1849 return_to_top_level (RETURN_ERROR);
1852 if (p[0] == ':' || p[0] == ' ' || p[0] == '\t')
1855 while (p[0] == ' ' || p[0] == '\t') p++;
1857 if ((p[0] == ':') && !has_parens)
1861 if (is_quoted) *argptr = *argptr+1;
1864 /* Extract the class name. */
1866 while (p != *argptr && p[-1] == ' ') --p;
1867 copy = (char *) alloca (p - *argptr + 1);
1868 memcpy (copy, *argptr, p - *argptr);
1869 copy[p - *argptr] = 0;
1871 /* Discard the class name from the arg. */
1873 while (*p == ' ' || *p == '\t') p++;
1876 sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0,
1877 (struct symtab **)NULL);
1880 ( TYPE_CODE (SYMBOL_TYPE (sym_class)) == TYPE_CODE_STRUCT
1881 || TYPE_CODE (SYMBOL_TYPE (sym_class)) == TYPE_CODE_UNION))
1883 /* Arg token is not digits => try it as a function name
1884 Find the next token(everything up to end or next blank). */
1885 if (strchr(gdb_completer_quote_characters, **argptr) != NULL)
1887 p = skip_quoted(*argptr);
1888 *argptr = *argptr + 1;
1893 while (*p && *p!=' ' && *p!='\t' && *p!=',' && *p!=':') p++;
1896 q = operator_chars (*argptr, &q1);
1900 char *tmp = alloca (q1 - q + 1);
1901 memcpy (tmp, q, q1 - q);
1903 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
1906 warning ("no mangling for \"%s\"", tmp);
1907 cplusplus_hint (saved_arg);
1908 return_to_top_level (RETURN_ERROR);
1910 copy = (char*) alloca (3 + strlen(opname));
1911 sprintf (copy, "__%s", opname);
1917 copy = (char *) alloca (p - *argptr + 1 );
1918 memcpy (copy, *argptr, p - *argptr);
1919 copy[p - *argptr] = '\0';
1920 if (strchr(gdb_completer_quote_characters, copy[p-*argptr-1]) != NULL)
1921 copy[p - *argptr -1] = '\0';
1924 /* no line number may be specified */
1925 while (*p == ' ' || *p == '\t') p++;
1929 i1 = 0; /* counter for the symbol array */
1930 t = SYMBOL_TYPE (sym_class);
1931 sym_arr = (struct symbol **) alloca(TYPE_NFN_FIELDS_TOTAL (t) * sizeof(struct symbol*));
1933 /* Cfront objects don't have fieldlists. */
1934 if (destructor_name_p (copy, t) && TYPE_FN_FIELDLISTS (t) != NULL)
1936 /* destructors are a special case. */
1937 struct fn_field *f = TYPE_FN_FIELDLIST1 (t, 0);
1938 int len = TYPE_FN_FIELDLIST_LENGTH (t, 0) - 1;
1939 /* gcc 1.x puts destructor in last field,
1940 gcc 2.x puts destructor in first field. */
1941 char *phys_name = TYPE_FN_FIELD_PHYSNAME (f, len);
1942 if (!DESTRUCTOR_PREFIX_P (phys_name))
1944 phys_name = TYPE_FN_FIELD_PHYSNAME (f, 0);
1945 if (!DESTRUCTOR_PREFIX_P (phys_name))
1949 lookup_symbol (phys_name, SYMBOL_BLOCK_VALUE (sym_class),
1950 VAR_NAMESPACE, 0, (struct symtab **)NULL);
1951 if (sym_arr[i1]) i1++;
1954 i1 = find_methods (t, copy, sym_arr);
1957 /* There is exactly one field with that name. */
1960 if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
1962 /* Arg is the name of a function */
1963 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1966 pc += FUNCTION_START_OFFSET;
1969 values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
1971 values.sals[0] = find_pc_line (pc, 0);
1972 values.sals[0].pc = (values.sals[0].end && values.sals[0].pc != pc) ? values.sals[0].end : pc;
1982 /* There is more than one field with that name
1983 (overloaded). Ask the user which one to use. */
1984 return decode_line_2 (sym_arr, i1, funfirstline, canonical);
1990 if (OPNAME_PREFIX_P (copy))
1992 tmp = (char *)alloca (strlen (copy+3) + 9);
1993 strcpy (tmp, "operator ");
1994 strcat (tmp, copy+3);
1999 warning ("the class `%s' does not have destructor defined",
2000 SYMBOL_SOURCE_NAME(sym_class));
2002 warning ("the class %s does not have any method named %s",
2003 SYMBOL_SOURCE_NAME(sym_class), tmp);
2004 cplusplus_hint (saved_arg);
2005 return_to_top_level (RETURN_ERROR);
2010 /* The quotes are important if copy is empty. */
2011 warning ("can't find class, struct, or union named \"%s\"",
2013 cplusplus_hint (saved_arg);
2014 return_to_top_level (RETURN_ERROR);
2020 /* Extract the file name. */
2022 while (p != *argptr && p[-1] == ' ') --p;
2023 copy = (char *) alloca (p - *argptr + 1);
2024 memcpy (copy, *argptr, p - *argptr);
2025 copy[p - *argptr] = 0;
2027 /* Find that file's data. */
2028 s = lookup_symtab (copy);
2031 if (!have_full_symbols () && !have_partial_symbols ())
2032 error (no_symtab_msg);
2033 error ("No source file named %s.", copy);
2036 /* Discard the file name from the arg. */
2038 while (*p == ' ' || *p == '\t') p++;
2042 /* S is specified file's symtab, or 0 if no file specified.
2043 arg no longer contains the file name. */
2045 /* Check whether arg is all digits (and sign) */
2048 if (*q == '-' || *q == '+') q++;
2049 while (*q >= '0' && *q <= '9')
2052 if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ','))
2054 /* We found a token consisting of all digits -- at least one digit. */
2055 enum sign {none, plus, minus} sign = none;
2057 /* We might need a canonical line spec if no file was specified. */
2058 int need_canonical = (s == 0) ? 1 : 0;
2060 /* This is where we need to make sure that we have good defaults.
2061 We must guarantee that this section of code is never executed
2062 when we are called with just a function name, since
2063 select_source_symtab calls us with such an argument */
2065 if (s == 0 && default_symtab == 0)
2067 select_source_symtab (0);
2068 default_symtab = current_source_symtab;
2069 default_line = current_source_line;
2072 if (**argptr == '+')
2073 sign = plus, (*argptr)++;
2074 else if (**argptr == '-')
2075 sign = minus, (*argptr)++;
2076 val.line = atoi (*argptr);
2083 val.line = default_line + val.line;
2089 val.line = default_line - val.line;
2094 break; /* No need to adjust val.line. */
2097 while (*q == ' ' || *q == '\t') q++;
2103 values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
2104 values.sals[0] = val;
2107 build_canonical_line_spec (values.sals, NULL, canonical);
2111 /* Arg token is not digits => try it as a variable name
2112 Find the next token (everything up to end or next whitespace). */
2116 p = skip_quoted (*argptr);
2118 error ("Unmatched single quote.");
2120 else if (has_parens)
2126 p = skip_quoted(*argptr);
2129 copy = (char *) alloca (p - *argptr + 1);
2130 memcpy (copy, *argptr, p - *argptr);
2131 copy[p - *argptr] = '\0';
2132 if ((copy[0] == copy [p - *argptr - 1])
2133 && strchr (gdb_completer_quote_characters, copy[0]) != NULL)
2135 copy [p - *argptr - 1] = '\0';
2138 while (*p == ' ' || *p == '\t') p++;
2141 /* Look up that token as a variable.
2142 If file specified, use that file's per-file block to start with. */
2144 sym = lookup_symbol (copy,
2145 (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)
2146 : get_selected_block ()),
2147 VAR_NAMESPACE, 0, &sym_symtab);
2151 if (SYMBOL_CLASS (sym) == LOC_BLOCK)
2153 /* Arg is the name of a function */
2154 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2157 pc += FUNCTION_START_OFFSET;
2160 val = find_pc_line (pc, 0);
2161 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2162 /* Convex: no need to suppress code on first line, if any */
2165 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2166 line is still part of the same function. */
2168 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= val.end
2169 && val.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2171 /* First pc of next line */
2173 /* Recalculate the line number (might not be N+1). */
2174 val = find_pc_line (pc, 0);
2178 values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
2179 values.sals[0] = val;
2182 /* Don't use the SYMBOL_LINE; if used at all it points to
2183 the line containing the parameters or thereabouts, not
2184 the first line of code. */
2186 /* We might need a canonical line spec if it is a static
2190 struct blockvector *bv = BLOCKVECTOR (sym_symtab);
2191 struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2192 if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL)
2193 build_canonical_line_spec (values.sals, copy, canonical);
2197 else if (SYMBOL_LINE (sym) != 0)
2199 /* We know its line number. */
2200 values.sals = (struct symtab_and_line *)
2201 xmalloc (sizeof (struct symtab_and_line));
2203 memset (&values.sals[0], 0, sizeof (values.sals[0]));
2204 values.sals[0].symtab = sym_symtab;
2205 values.sals[0].line = SYMBOL_LINE (sym);
2209 /* This can happen if it is compiled with a compiler which doesn't
2210 put out line numbers for variables. */
2211 /* FIXME: Shouldn't we just set .line and .symtab to zero and
2212 return? For example, "info line foo" could print the address. */
2213 error ("Line number not known for symbol \"%s\"", copy);
2216 msymbol = lookup_minimal_symbol (copy, (struct objfile *) NULL);
2217 if (msymbol != NULL)
2221 val.pc = SYMBOL_VALUE_ADDRESS (msymbol);
2224 val.pc += FUNCTION_START_OFFSET;
2225 SKIP_PROLOGUE (val.pc);
2227 values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
2228 values.sals[0] = val;
2233 if (!have_full_symbols () &&
2234 !have_partial_symbols () && !have_minimal_symbols ())
2235 error (no_symtab_msg);
2237 error ("Function \"%s\" not defined.", copy);
2238 return values; /* for lint */
2241 struct symtabs_and_lines
2242 decode_line_spec (string, funfirstline)
2246 struct symtabs_and_lines sals;
2248 error ("Empty line specification.");
2249 sals = decode_line_1 (&string, funfirstline,
2250 current_source_symtab, current_source_line,
2253 error ("Junk at end of line specification: %s", string);
2257 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
2258 operate on (ask user if necessary).
2259 If CANONICAL is non-NULL return a corresponding array of mangled names
2260 as canonical line specs there. */
2262 static struct symtabs_and_lines
2263 decode_line_2 (sym_arr, nelts, funfirstline, canonical)
2264 struct symbol *sym_arr[];
2269 struct symtabs_and_lines values, return_values;
2270 register CORE_ADDR pc;
2275 struct cleanup *old_chain;
2276 char **canonical_arr = (char **)NULL;
2278 values.sals = (struct symtab_and_line *) alloca (nelts * sizeof(struct symtab_and_line));
2279 return_values.sals = (struct symtab_and_line *) xmalloc (nelts * sizeof(struct symtab_and_line));
2280 old_chain = make_cleanup (free, return_values.sals);
2284 canonical_arr = (char **) xmalloc (nelts * sizeof (char *));
2285 make_cleanup (free, canonical_arr);
2286 memset (canonical_arr, 0, nelts * sizeof (char *));
2287 *canonical = canonical_arr;
2291 printf_unfiltered("[0] cancel\n[1] all\n");
2294 if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK)
2296 /* Arg is the name of a function */
2297 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym_arr[i]));
2300 pc += FUNCTION_START_OFFSET;
2303 values.sals[i] = find_pc_line (pc, 0);
2304 values.sals[i].pc = (values.sals[i].end && values.sals[i].pc != pc) ?
2305 values.sals[i].end : pc;
2306 printf_unfiltered("[%d] %s at %s:%d\n", (i+2), SYMBOL_SOURCE_NAME (sym_arr[i]),
2307 values.sals[i].symtab->filename, values.sals[i].line);
2309 else printf_unfiltered ("?HERE\n");
2313 if ((prompt = getenv ("PS2")) == NULL)
2317 printf_unfiltered("%s ",prompt);
2318 gdb_flush(gdb_stdout);
2320 args = command_line_input ((char *) NULL, 0);
2322 if (args == 0 || *args == 0)
2323 error_no_arg ("one or more choice numbers");
2331 while (*arg1 >= '0' && *arg1 <= '9') arg1++;
2332 if (*arg1 && *arg1 != ' ' && *arg1 != '\t')
2333 error ("Arguments must be choice numbers.");
2338 error ("cancelled");
2343 for (i = 0; i < nelts; i++)
2345 if (canonical_arr[i] == NULL)
2347 symname = SYMBOL_NAME (sym_arr[i]);
2348 canonical_arr[i] = savestring (symname, strlen (symname));
2352 memcpy (return_values.sals, values.sals,
2353 (nelts * sizeof(struct symtab_and_line)));
2354 return_values.nelts = nelts;
2355 discard_cleanups (old_chain);
2356 return return_values;
2359 if (num > nelts + 2)
2361 printf_unfiltered ("No choice number %d.\n", num);
2366 if (values.sals[num].pc)
2370 symname = SYMBOL_NAME (sym_arr[num]);
2371 make_cleanup (free, symname);
2372 canonical_arr[i] = savestring (symname, strlen (symname));
2374 return_values.sals[i++] = values.sals[num];
2375 values.sals[num].pc = 0;
2379 printf_unfiltered ("duplicate request for %d ignored.\n", num);
2384 while (*args == ' ' || *args == '\t') args++;
2386 return_values.nelts = i;
2387 discard_cleanups (old_chain);
2388 return return_values;
2392 /* Slave routine for sources_info. Force line breaks at ,'s.
2393 NAME is the name to print and *FIRST is nonzero if this is the first
2394 name printed. Set *FIRST to zero. */
2396 output_source_filename (name, first)
2400 /* Table of files printed so far. Since a single source file can
2401 result in several partial symbol tables, we need to avoid printing
2402 it more than once. Note: if some of the psymtabs are read in and
2403 some are not, it gets printed both under "Source files for which
2404 symbols have been read" and "Source files for which symbols will
2405 be read in on demand". I consider this a reasonable way to deal
2406 with the situation. I'm not sure whether this can also happen for
2407 symtabs; it doesn't hurt to check. */
2408 static char **tab = NULL;
2409 /* Allocated size of tab in elements.
2410 Start with one 256-byte block (when using GNU malloc.c).
2411 24 is the malloc overhead when range checking is in effect. */
2412 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2413 /* Current size of tab in elements. */
2414 static int tab_cur_size;
2421 tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab));
2425 /* Is NAME in tab? */
2426 for (p = tab; p < tab + tab_cur_size; p++)
2427 if (STREQ (*p, name))
2428 /* Yes; don't print it again. */
2430 /* No; add it to tab. */
2431 if (tab_cur_size == tab_alloc_size)
2433 tab_alloc_size *= 2;
2434 tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab));
2436 tab[tab_cur_size++] = name;
2444 printf_filtered (", ");
2448 fputs_filtered (name, gdb_stdout);
2452 sources_info (ignore, from_tty)
2456 register struct symtab *s;
2457 register struct partial_symtab *ps;
2458 register struct objfile *objfile;
2461 if (!have_full_symbols () && !have_partial_symbols ())
2463 error (no_symtab_msg);
2466 printf_filtered ("Source files for which symbols have been read in:\n\n");
2469 ALL_SYMTABS (objfile, s)
2471 output_source_filename (s -> filename, &first);
2473 printf_filtered ("\n\n");
2475 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2478 ALL_PSYMTABS (objfile, ps)
2482 output_source_filename (ps -> filename, &first);
2485 printf_filtered ("\n");
2488 /* List all symbols (if REGEXP is NULL) or all symbols matching REGEXP.
2489 If CLASS is zero, list all symbols except functions, type names, and
2491 If CLASS is 1, list only functions.
2492 If CLASS is 2, list only type names.
2493 If CLASS is 3, list only method names.
2495 BPT is non-zero if we should set a breakpoint at the functions
2499 list_symbols (regexp, class, bpt)
2504 register struct symtab *s;
2505 register struct partial_symtab *ps;
2506 register struct blockvector *bv;
2507 struct blockvector *prev_bv = 0;
2508 register struct block *b;
2510 register struct symbol *sym;
2511 struct partial_symbol *psym;
2512 struct objfile *objfile;
2513 struct minimal_symbol *msymbol;
2515 static char *classnames[]
2516 = {"variable", "function", "type", "method"};
2517 int found_in_file = 0;
2519 static enum minimal_symbol_type types[]
2520 = {mst_data, mst_text, mst_abs, mst_unknown};
2521 static enum minimal_symbol_type types2[]
2522 = {mst_bss, mst_text, mst_abs, mst_unknown};
2523 enum minimal_symbol_type ourtype = types[class];
2524 enum minimal_symbol_type ourtype2 = types2[class];
2528 /* Make sure spacing is right for C++ operators.
2529 This is just a courtesy to make the matching less sensitive
2530 to how many spaces the user leaves between 'operator'
2531 and <TYPENAME> or <OPERATOR>. */
2533 char *opname = operator_chars (regexp, &opend);
2536 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2537 if (isalpha(*opname) || *opname == '_' || *opname == '$')
2539 /* There should 1 space between 'operator' and 'TYPENAME'. */
2540 if (opname[-1] != ' ' || opname[-2] == ' ')
2545 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2546 if (opname[-1] == ' ')
2549 /* If wrong number of spaces, fix it. */
2552 char *tmp = (char*) alloca(opend-opname+10);
2553 sprintf(tmp, "operator%.*s%s", fix, " ", opname);
2558 if (0 != (val = re_comp (regexp)))
2559 error ("Invalid regexp (%s): %s", val, regexp);
2562 /* Search through the partial symtabs *first* for all symbols
2563 matching the regexp. That way we don't have to reproduce all of
2564 the machinery below. */
2566 ALL_PSYMTABS (objfile, ps)
2568 struct partial_symbol *bound, *gbound, *sbound;
2571 if (ps->readin) continue;
2573 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2574 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2577 /* Go through all of the symbols stored in a partial
2578 symtab in one loop. */
2579 psym = objfile->global_psymbols.list + ps->globals_offset;
2584 if (bound == gbound && ps->n_static_syms != 0)
2586 psym = objfile->static_psymbols.list + ps->statics_offset;
2597 /* If it would match (logic taken from loop below)
2598 load the file and go on to the next one */
2599 if ((regexp == NULL || SYMBOL_MATCHES_REGEXP (psym))
2600 && ((class == 0 && SYMBOL_CLASS (psym) != LOC_TYPEDEF
2601 && SYMBOL_CLASS (psym) != LOC_BLOCK)
2602 || (class == 1 && SYMBOL_CLASS (psym) == LOC_BLOCK)
2603 || (class == 2 && SYMBOL_CLASS (psym) == LOC_TYPEDEF)
2604 || (class == 3 && SYMBOL_CLASS (psym) == LOC_BLOCK)))
2606 PSYMTAB_TO_SYMTAB(ps);
2614 /* Here, we search through the minimal symbol tables for functions that
2615 match, and call find_pc_symtab on them to force their symbols to
2616 be read. The symbol will then be found during the scan of symtabs
2617 below. If find_pc_symtab fails, set found_misc so that we will
2618 rescan to print any matching symbols without debug info. */
2622 ALL_MSYMBOLS (objfile, msymbol)
2624 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2625 MSYMBOL_TYPE (msymbol) == ourtype2)
2627 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2629 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2638 /* Printout here so as to get after the "Reading in symbols"
2639 messages which will be generated above. */
2641 printf_filtered (regexp
2642 ? "All %ss matching regular expression \"%s\":\n"
2643 : "All defined %ss:\n",
2647 ALL_SYMTABS (objfile, s)
2650 bv = BLOCKVECTOR (s);
2651 /* Often many files share a blockvector.
2652 Scan each blockvector only once so that
2653 we don't get every symbol many times.
2654 It happens that the first symtab in the list
2655 for any given blockvector is the main file. */
2657 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
2659 b = BLOCKVECTOR_BLOCK (bv, i);
2660 /* Skip the sort if this block is always sorted. */
2661 if (!BLOCK_SHOULD_SORT (b))
2662 sort_block_syms (b);
2663 for (j = 0; j < BLOCK_NSYMS (b); j++)
2666 sym = BLOCK_SYM (b, j);
2667 if ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
2668 && ((class == 0 && SYMBOL_CLASS (sym) != LOC_TYPEDEF
2669 && SYMBOL_CLASS (sym) != LOC_BLOCK
2670 && SYMBOL_CLASS (sym) != LOC_CONST)
2671 || (class == 1 && SYMBOL_CLASS (sym) == LOC_BLOCK)
2672 || (class == 2 && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
2673 || (class == 3 && SYMBOL_CLASS (sym) == LOC_BLOCK)))
2677 /* Set a breakpoint here, if it's a function */
2680 /* There may be more than one function with the
2681 same name but in different files. In order to
2682 set breakpoints on all of them, we must give
2683 both the file name and the function name to
2686 (char *) alloca (strlen (s->filename)
2687 + strlen (SYMBOL_NAME(sym))
2689 strcpy (string, s->filename);
2690 strcat (string, ":");
2691 strcat (string, SYMBOL_NAME(sym));
2692 break_command (string, 0);
2695 else if (!found_in_file)
2697 fputs_filtered ("\nFile ", gdb_stdout);
2698 fputs_filtered (s->filename, gdb_stdout);
2699 fputs_filtered (":\n", gdb_stdout);
2703 if (class != 2 && i == STATIC_BLOCK)
2704 printf_filtered ("static ");
2706 /* Typedef that is not a C++ class */
2708 && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
2709 c_typedef_print (SYMBOL_TYPE(sym), sym, gdb_stdout);
2710 /* variable, func, or typedef-that-is-c++-class */
2711 else if (class < 2 ||
2713 SYMBOL_NAMESPACE(sym) == STRUCT_NAMESPACE))
2715 type_print (SYMBOL_TYPE (sym),
2716 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
2717 ? "" : SYMBOL_SOURCE_NAME (sym)),
2720 printf_filtered (";\n");
2724 # if 0 /* FIXME, why is this zapped out? */
2726 c_type_print_base (TYPE_FN_FIELD_TYPE(t, i),
2728 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t, i),
2730 sprintf (buf, " %s::", type_name_no_tag (t));
2731 cp_type_print_method_args (TYPE_FN_FIELD_ARGS (t, i),
2732 buf, name, gdb_stdout);
2741 /* If there are no eyes, avoid all contact. I mean, if there are
2742 no debug symbols, then print directly from the msymbol_vector. */
2744 if (found_misc || class != 1)
2747 ALL_MSYMBOLS (objfile, msymbol)
2749 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2750 MSYMBOL_TYPE (msymbol) == ourtype2)
2752 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2754 /* Functions: Look up by address. */
2756 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
2758 /* Variables/Absolutes: Look up by name */
2759 if (lookup_symbol (SYMBOL_NAME (msymbol),
2760 (struct block *) NULL, VAR_NAMESPACE,
2761 0, (struct symtab **) NULL) == NULL)
2765 printf_filtered ("\nNon-debugging symbols:\n");
2768 printf_filtered (" %08lx %s\n",
2769 (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol),
2770 SYMBOL_SOURCE_NAME (msymbol));
2780 variables_info (regexp, from_tty)
2784 list_symbols (regexp, 0, 0);
2788 functions_info (regexp, from_tty)
2792 list_symbols (regexp, 1, 0);
2796 types_info (regexp, from_tty)
2800 list_symbols (regexp, 2, 0);
2804 /* Tiemann says: "info methods was never implemented." */
2806 methods_info (regexp)
2809 list_symbols (regexp, 3, 0);
2813 /* Breakpoint all functions matching regular expression. */
2815 rbreak_command (regexp, from_tty)
2819 list_symbols (regexp, 1, 1);
2823 /* Return Nonzero if block a is lexically nested within block b,
2824 or if a and b have the same pc range.
2825 Return zero otherwise. */
2828 struct block *a, *b;
2832 return BLOCK_START (a) >= BLOCK_START (b)
2833 && BLOCK_END (a) <= BLOCK_END (b);
2837 /* Helper routine for make_symbol_completion_list. */
2839 static int return_val_size;
2840 static int return_val_index;
2841 static char **return_val;
2843 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
2845 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
2846 /* Put only the mangled name on the list. */ \
2847 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
2848 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
2849 completion_list_add_name \
2850 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
2852 completion_list_add_name \
2853 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
2856 /* Test to see if the symbol specified by SYMNAME (which is already
2857 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
2858 characters. If so, add it to the current completion list. */
2861 completion_list_add_name (symname, sym_text, sym_text_len, text, word)
2871 /* clip symbols that cannot match */
2873 if (strncmp (symname, sym_text, sym_text_len) != 0)
2878 /* Clip any symbol names that we've already considered. (This is a
2879 time optimization) */
2881 for (i = 0; i < return_val_index; ++i)
2883 if (STREQ (symname, return_val[i]))
2889 /* We have a match for a completion, so add SYMNAME to the current list
2890 of matches. Note that the name is moved to freshly malloc'd space. */
2894 if (word == sym_text)
2896 new = xmalloc (strlen (symname) + 5);
2897 strcpy (new, symname);
2899 else if (word > sym_text)
2901 /* Return some portion of symname. */
2902 new = xmalloc (strlen (symname) + 5);
2903 strcpy (new, symname + (word - sym_text));
2907 /* Return some of SYM_TEXT plus symname. */
2908 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
2909 strncpy (new, word, sym_text - word);
2910 new[sym_text - word] = '\0';
2911 strcat (new, symname);
2914 if (return_val_index + 3 > return_val_size)
2916 newsize = (return_val_size *= 2) * sizeof (char *);
2917 return_val = (char **) xrealloc ((char *) return_val, newsize);
2919 return_val[return_val_index++] = new;
2920 return_val[return_val_index] = NULL;
2924 /* Return a NULL terminated array of all symbols (regardless of class) which
2925 begin by matching TEXT. If the answer is no symbols, then the return value
2926 is an array which contains only a NULL pointer.
2928 Problem: All of the symbols have to be copied because readline frees them.
2929 I'm not going to worry about this; hopefully there won't be that many. */
2932 make_symbol_completion_list (text, word)
2936 register struct symbol *sym;
2937 register struct symtab *s;
2938 register struct partial_symtab *ps;
2939 register struct minimal_symbol *msymbol;
2940 register struct objfile *objfile;
2941 register struct block *b, *surrounding_static_block = 0;
2943 struct partial_symbol *psym;
2944 /* The symbol we are completing on. Points in same buffer as text. */
2946 /* Length of sym_text. */
2949 /* Now look for the symbol we are supposed to complete on.
2950 FIXME: This should be language-specific. */
2954 char *quote_pos = NULL;
2956 /* First see if this is a quoted string. */
2958 for (p = text; *p != '\0'; ++p)
2960 if (quote_found != '\0')
2962 if (*p == quote_found)
2963 /* Found close quote. */
2965 else if (*p == '\\' && p[1] == quote_found)
2966 /* A backslash followed by the quote character
2967 doesn't end the string. */
2970 else if (*p == '\'' || *p == '"')
2976 if (quote_found == '\'')
2977 /* A string within single quotes can be a symbol, so complete on it. */
2978 sym_text = quote_pos + 1;
2979 else if (quote_found == '"')
2980 /* A double-quoted string is never a symbol, nor does it make sense
2981 to complete it any other way. */
2985 /* It is not a quoted string. Break it based on the characters
2986 which are in symbols. */
2989 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
2998 sym_text_len = strlen (sym_text);
3000 return_val_size = 100;
3001 return_val_index = 0;
3002 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3003 return_val[0] = NULL;
3005 /* Look through the partial symtabs for all symbols which begin
3006 by matching SYM_TEXT. Add each one that you find to the list. */
3008 ALL_PSYMTABS (objfile, ps)
3010 /* If the psymtab's been read in we'll get it when we search
3011 through the blockvector. */
3012 if (ps->readin) continue;
3014 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3015 psym < (objfile->global_psymbols.list + ps->globals_offset
3016 + ps->n_global_syms);
3019 /* If interrupted, then quit. */
3021 COMPLETION_LIST_ADD_SYMBOL (psym, sym_text, sym_text_len, text, word);
3024 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3025 psym < (objfile->static_psymbols.list + ps->statics_offset
3026 + ps->n_static_syms);
3030 COMPLETION_LIST_ADD_SYMBOL (psym, sym_text, sym_text_len, text, word);
3034 /* At this point scan through the misc symbol vectors and add each
3035 symbol you find to the list. Eventually we want to ignore
3036 anything that isn't a text symbol (everything else will be
3037 handled by the psymtab code above). */
3039 ALL_MSYMBOLS (objfile, msymbol)
3042 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3045 /* Search upwards from currently selected frame (so that we can
3046 complete on local vars. */
3048 for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b))
3050 if (!BLOCK_SUPERBLOCK (b))
3052 surrounding_static_block = b; /* For elmin of dups */
3055 /* Also catch fields of types defined in this places which match our
3056 text string. Only complete on types visible from current context. */
3058 for (i = 0; i < BLOCK_NSYMS (b); i++)
3060 sym = BLOCK_SYM (b, i);
3061 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3062 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3064 struct type *t = SYMBOL_TYPE (sym);
3065 enum type_code c = TYPE_CODE (t);
3067 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3069 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3071 if (TYPE_FIELD_NAME (t, j))
3073 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3074 sym_text, sym_text_len, text, word);
3082 /* Go through the symtabs and check the externs and statics for
3083 symbols which match. */
3085 ALL_SYMTABS (objfile, s)
3088 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3089 for (i = 0; i < BLOCK_NSYMS (b); i++)
3091 sym = BLOCK_SYM (b, i);
3092 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3096 ALL_SYMTABS (objfile, s)
3099 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3100 /* Don't do this block twice. */
3101 if (b == surrounding_static_block) continue;
3102 for (i = 0; i < BLOCK_NSYMS (b); i++)
3104 sym = BLOCK_SYM (b, i);
3105 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3109 return (return_val);
3114 /* Add the type of the symbol sym to the type of the current
3115 function whose block we are in (assumed). The type of
3116 this current function is contained in *TYPE.
3118 This basically works as follows: When we find a function
3119 symbol (N_FUNC with a 'f' or 'F' in the symbol name), we record
3120 a pointer to its type in the global in_function_type. Every
3121 time we come across a parameter symbol ('p' in its name), then
3122 this procedure adds the name and type of that parameter
3123 to the function type pointed to by *TYPE. (Which should correspond
3124 to in_function_type if it was called correctly).
3126 Note that since we are modifying a type, the result of
3127 lookup_function_type() should be memcpy()ed before calling
3128 this. When not in strict typing mode, the expression
3129 evaluator can choose to ignore this.
3131 Assumption: All of a function's parameter symbols will
3132 appear before another function symbol is found. The parameters
3133 appear in the same order in the argument list as they do in the
3137 add_param_to_type (type,sym)
3141 int num = ++(TYPE_NFIELDS(*type));
3143 if(TYPE_NFIELDS(*type)-1)
3144 TYPE_FIELDS(*type) = (struct field *)
3145 (*current_objfile->xrealloc) ((char *)(TYPE_FIELDS(*type)),
3146 num*sizeof(struct field));
3148 TYPE_FIELDS(*type) = (struct field *)
3149 (*current_objfile->xmalloc) (num*sizeof(struct field));
3151 TYPE_FIELD_BITPOS(*type,num-1) = num-1;
3152 TYPE_FIELD_BITSIZE(*type,num-1) = 0;
3153 TYPE_FIELD_TYPE(*type,num-1) = SYMBOL_TYPE(sym);
3154 TYPE_FIELD_NAME(*type,num-1) = SYMBOL_NAME(sym);
3159 _initialize_symtab ()
3161 add_info ("variables", variables_info,
3162 "All global and static variable names, or those matching REGEXP.");
3163 add_info ("functions", functions_info,
3164 "All function names, or those matching REGEXP.");
3166 /* FIXME: This command has at least the following problems:
3167 1. It prints builtin types (in a very strange and confusing fashion).
3168 2. It doesn't print right, e.g. with
3169 typedef struct foo *FOO
3170 type_print prints "FOO" when we want to make it (in this situation)
3171 print "struct foo *".
3172 I also think "ptype" or "whatis" is more likely to be useful (but if
3173 there is much disagreement "info types" can be fixed). */
3174 add_info ("types", types_info,
3175 "All type names, or those matching REGEXP.");
3178 add_info ("methods", methods_info,
3179 "All method names, or those matching REGEXP::REGEXP.\n\
3180 If the class qualifier is omitted, it is assumed to be the current scope.\n\
3181 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
3184 add_info ("sources", sources_info,
3185 "Source files in the program.");
3187 add_com ("rbreak", no_class, rbreak_command,
3188 "Set a breakpoint for all functions matching REGEXP.");
3190 /* Initialize the one built-in type that isn't language dependent... */
3191 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
3192 "<unknown type>", (struct objfile *) NULL);