1 /* Symbol table lookup for the GNU debugger, GDB.
2 Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
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., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
41 #include <sys/types.h>
43 #include "gdb_string.h"
47 /* Prototype for one function in parser-defs.h,
48 instead of including that entire file. */
50 extern char *find_template_name_end (char *);
52 /* Prototypes for local functions */
54 static int find_methods (struct type
*, char *, struct symbol
**);
56 static void completion_list_add_name (char *, char *, int, char *, char *);
58 static void build_canonical_line_spec (struct symtab_and_line
*,
61 static struct symtabs_and_lines
decode_line_2 (struct symbol
*[],
64 static void rbreak_command (char *, int);
66 static void types_info (char *, int);
68 static void functions_info (char *, int);
70 static void variables_info (char *, int);
72 static void sources_info (char *, int);
74 static void output_source_filename (char *, int *);
76 char *operator_chars (char *, char **);
78 static int find_line_common (struct linetable
*, int, int *);
80 static struct partial_symbol
*lookup_partial_symbol (struct partial_symtab
*,
84 static struct partial_symbol
*fixup_psymbol_section (struct
88 static struct symtab
*lookup_symtab_1 (char *);
90 static void cplusplus_hint (char *);
92 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
94 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
95 /* Signals the presence of objects compiled by HP compilers */
96 int hp_som_som_object_present
= 0;
98 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
100 static int file_matches (char *, char **, int);
102 static void print_symbol_info (namespace_enum
,
103 struct symtab
*, struct symbol
*, int, char *);
105 static void print_msymbol_info (struct minimal_symbol
*);
107 static void symtab_symbol_info (char *, namespace_enum
, int);
109 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
111 void _initialize_symtab (void);
115 /* The single non-language-specific builtin type */
116 struct type
*builtin_type_error
;
118 /* Block in which the most recently searched-for symbol was found.
119 Might be better to make this a parameter to lookup_symbol and
122 const struct block
*block_found
;
124 char no_symtab_msg
[] = "No symbol table is loaded. Use the \"file\" command.";
126 /* While the C++ support is still in flux, issue a possibly helpful hint on
127 using the new command completion feature on single quoted demangled C++
128 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
131 cplusplus_hint (name
)
134 while (*name
== '\'')
136 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name
, name
);
137 printf_filtered ("(Note leading single quote.)\n");
140 /* Check for a symtab of a specific name; first in symtabs, then in
141 psymtabs. *If* there is no '/' in the name, a match after a '/'
142 in the symtab filename will also work. */
144 static struct symtab
*
145 lookup_symtab_1 (name
)
148 register struct symtab
*s
;
149 register struct partial_symtab
*ps
;
150 register char *slash
;
151 register struct objfile
*objfile
;
155 /* First, search for an exact match */
157 ALL_SYMTABS (objfile
, s
)
158 if (STREQ (name
, s
->filename
))
161 slash
= strchr (name
, '/');
163 /* Now, search for a matching tail (only if name doesn't have any dirs) */
166 ALL_SYMTABS (objfile
, s
)
168 char *p
= s
->filename
;
169 char *tail
= strrchr (p
, '/');
178 /* Same search rules as above apply here, but now we look thru the
181 ps
= lookup_partial_symtab (name
);
186 error ("Internal: readin %s pst for `%s' found when no symtab found.",
189 s
= PSYMTAB_TO_SYMTAB (ps
);
194 /* At this point, we have located the psymtab for this file, but
195 the conversion to a symtab has failed. This usually happens
196 when we are looking up an include file. In this case,
197 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
198 been created. So, we need to run through the symtabs again in
199 order to find the file.
200 XXX - This is a crock, and should be fixed inside of the the
201 symbol parsing routines. */
205 /* Lookup the symbol table of a source file named NAME. Try a couple
206 of variations if the first lookup doesn't work. */
212 register struct symtab
*s
;
217 s
= lookup_symtab_1 (name
);
222 /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
225 /* If name not found as specified, see if adding ".c" helps. */
226 /* Why is this? Is it just a user convenience? (If so, it's pretty
227 questionable in the presence of C++, FORTRAN, etc.). It's not in
230 copy
= (char *) alloca (strlen (name
) + 3);
233 s
= lookup_symtab_1 (copy
);
238 /* We didn't find anything; die. */
242 /* Lookup the partial symbol table of a source file named NAME.
243 *If* there is no '/' in the name, a match after a '/'
244 in the psymtab filename will also work. */
246 struct partial_symtab
*
247 lookup_partial_symtab (name
)
250 register struct partial_symtab
*pst
;
251 register struct objfile
*objfile
;
253 ALL_PSYMTABS (objfile
, pst
)
255 if (STREQ (name
, pst
->filename
))
261 /* Now, search for a matching tail (only if name doesn't have any dirs) */
263 if (!strchr (name
, '/'))
264 ALL_PSYMTABS (objfile
, pst
)
266 char *p
= pst
->filename
;
267 char *tail
= strrchr (p
, '/');
279 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
280 full method name, which consist of the class name (from T), the unadorned
281 method name from METHOD_ID, and the signature for the specific overload,
282 specified by SIGNATURE_ID. Note that this function is g++ specific. */
285 gdb_mangle_name (type
, method_id
, signature_id
)
287 int method_id
, signature_id
;
289 int mangled_name_len
;
291 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
292 struct fn_field
*method
= &f
[signature_id
];
293 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
294 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
295 char *newname
= type_name_no_tag (type
);
297 /* Does the form of physname indicate that it is the full mangled name
298 of a constructor (not just the args)? */
299 int is_full_physname_constructor
;
302 int is_destructor
= DESTRUCTOR_PREFIX_P (physname
);
303 /* Need a new type prefix. */
304 char *const_prefix
= method
->is_const
? "C" : "";
305 char *volatile_prefix
= method
->is_volatile
? "V" : "";
307 int len
= (newname
== NULL
? 0 : strlen (newname
));
309 is_full_physname_constructor
=
310 ((physname
[0] == '_' && physname
[1] == '_' &&
311 (isdigit (physname
[2]) || physname
[2] == 'Q' || physname
[2] == 't'))
312 || (strncmp (physname
, "__ct", 4) == 0));
315 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
318 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
320 if (is_destructor
|| is_full_physname_constructor
)
322 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
323 strcpy (mangled_name
, physname
);
329 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
331 else if (physname
[0] == 't' || physname
[0] == 'Q')
333 /* The physname for template and qualified methods already includes
335 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
341 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
343 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
348 /* Only needed for GNU-mangled names. ANSI-mangled names
349 work with the normal mechanisms. */
350 if (OPNAME_PREFIX_P (field_name
))
352 const char *opname
= cplus_mangle_opname (field_name
+ 3, 0);
354 error ("No mangling for \"%s\"", field_name
);
355 mangled_name_len
+= strlen (opname
);
356 mangled_name
= (char *) xmalloc (mangled_name_len
);
358 strncpy (mangled_name
, field_name
, 3);
359 mangled_name
[3] = '\0';
360 strcat (mangled_name
, opname
);
364 mangled_name
= (char *) xmalloc (mangled_name_len
);
366 mangled_name
[0] = '\0';
368 strcpy (mangled_name
, field_name
);
370 strcat (mangled_name
, buf
);
371 /* If the class doesn't have a name, i.e. newname NULL, then we just
372 mangle it using 0 for the length of the class. Thus it gets mangled
373 as something starting with `::' rather than `classname::'. */
375 strcat (mangled_name
, newname
);
377 strcat (mangled_name
, physname
);
378 return (mangled_name
);
383 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
385 struct partial_symtab
*
386 find_pc_sect_psymtab (pc
, section
)
390 register struct partial_symtab
*pst
;
391 register struct objfile
*objfile
;
393 ALL_PSYMTABS (objfile
, pst
)
395 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
397 struct minimal_symbol
*msymbol
;
398 struct partial_symtab
*tpst
;
400 /* An objfile that has its functions reordered might have
401 many partial symbol tables containing the PC, but
402 we want the partial symbol table that contains the
403 function containing the PC. */
404 if (!(objfile
->flags
& OBJF_REORDERED
) &&
405 section
== 0) /* can't validate section this way */
408 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
412 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
414 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
416 struct partial_symbol
*p
;
418 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
420 && SYMBOL_VALUE_ADDRESS (p
)
421 == SYMBOL_VALUE_ADDRESS (msymbol
))
431 /* Find which partial symtab contains PC. Return 0 if none.
432 Backward compatibility, no section */
434 struct partial_symtab
*
438 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
441 /* Find which partial symbol within a psymtab matches PC and SECTION.
442 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
444 struct partial_symbol
*
445 find_pc_sect_psymbol (psymtab
, pc
, section
)
446 struct partial_symtab
*psymtab
;
450 struct partial_symbol
*best
= NULL
, *p
, **pp
;
454 psymtab
= find_pc_sect_psymtab (pc
, section
);
458 /* Cope with programs that start at address 0 */
459 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
461 /* Search the global symbols as well as the static symbols, so that
462 find_pc_partial_function doesn't use a minimal symbol and thus
463 cache a bad endaddr. */
464 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
465 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
466 < psymtab
->n_global_syms
);
470 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
471 && SYMBOL_CLASS (p
) == LOC_BLOCK
472 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
473 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
474 || (psymtab
->textlow
== 0
475 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
477 if (section
) /* match on a specific section */
479 fixup_psymbol_section (p
, psymtab
->objfile
);
480 if (SYMBOL_BFD_SECTION (p
) != section
)
483 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
488 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
489 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
490 < psymtab
->n_static_syms
);
494 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
495 && SYMBOL_CLASS (p
) == LOC_BLOCK
496 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
497 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
498 || (psymtab
->textlow
== 0
499 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
501 if (section
) /* match on a specific section */
503 fixup_psymbol_section (p
, psymtab
->objfile
);
504 if (SYMBOL_BFD_SECTION (p
) != section
)
507 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
515 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
516 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
518 struct partial_symbol
*
519 find_pc_psymbol (psymtab
, pc
)
520 struct partial_symtab
*psymtab
;
523 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
526 /* Debug symbols usually don't have section information. We need to dig that
527 out of the minimal symbols and stash that in the debug symbol. */
530 fixup_section (ginfo
, objfile
)
531 struct general_symbol_info
*ginfo
;
532 struct objfile
*objfile
;
534 struct minimal_symbol
*msym
;
535 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
538 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
542 fixup_symbol_section (sym
, objfile
)
544 struct objfile
*objfile
;
549 if (SYMBOL_BFD_SECTION (sym
))
552 fixup_section (&sym
->ginfo
, objfile
);
557 static struct partial_symbol
*
558 fixup_psymbol_section (psym
, objfile
)
559 struct partial_symbol
*psym
;
560 struct objfile
*objfile
;
565 if (SYMBOL_BFD_SECTION (psym
))
568 fixup_section (&psym
->ginfo
, objfile
);
573 /* Find the definition for a specified symbol name NAME
574 in namespace NAMESPACE, visible from lexical block BLOCK.
575 Returns the struct symbol pointer, or zero if no symbol is found.
576 If SYMTAB is non-NULL, store the symbol table in which the
577 symbol was found there, or NULL if not found.
578 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
579 NAME is a field of the current implied argument `this'. If so set
580 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
581 BLOCK_FOUND is set to the block in which NAME is found (in the case of
582 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
584 /* This function has a bunch of loops in it and it would seem to be
585 attractive to put in some QUIT's (though I'm not really sure
586 whether it can run long enough to be really important). But there
587 are a few calls for which it would appear to be bad news to quit
588 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
589 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
590 code below which can error(), but that probably doesn't affect
591 these calls since they are looking for a known variable and thus
592 can probably assume it will never hit the C++ code). */
595 lookup_symbol (name
, block
, namespace, is_a_field_of_this
, symtab
)
597 register const struct block
*block
;
598 const namespace_enum
namespace;
599 int *is_a_field_of_this
;
600 struct symtab
**symtab
;
602 register struct symbol
*sym
;
603 register struct symtab
*s
= NULL
;
604 register struct partial_symtab
*ps
;
605 struct blockvector
*bv
;
606 register struct objfile
*objfile
= NULL
;
607 register struct block
*b
;
608 register struct minimal_symbol
*msymbol
;
610 /* Search specified block and its superiors. */
614 sym
= lookup_block_symbol (block
, name
, namespace);
620 /* Search the list of symtabs for one which contains the
621 address of the start of this block. */
622 ALL_SYMTABS (objfile
, s
)
624 bv
= BLOCKVECTOR (s
);
625 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
626 if (BLOCK_START (b
) <= BLOCK_START (block
)
627 && BLOCK_END (b
) > BLOCK_START (block
))
634 return fixup_symbol_section (sym
, objfile
);
636 block
= BLOCK_SUPERBLOCK (block
);
639 /* FIXME: this code is never executed--block is always NULL at this
640 point. What is it trying to do, anyway? We already should have
641 checked the STATIC_BLOCK above (it is the superblock of top-level
642 blocks). Why is VAR_NAMESPACE special-cased? */
643 /* Don't need to mess with the psymtabs; if we have a block,
644 that file is read in. If we don't, then we deal later with
645 all the psymtab stuff that needs checking. */
646 /* Note (RT): The following never-executed code looks unnecessary to me also.
647 * If we change the code to use the original (passed-in)
648 * value of 'block', we could cause it to execute, but then what
649 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
650 * 'block' was already searched by the above code. And the STATIC_BLOCK's
651 * of *other* symtabs (those files not containing 'block' lexically)
652 * should not contain 'block' address-wise. So we wouldn't expect this
653 * code to find any 'sym''s that were not found above. I vote for
654 * deleting the following paragraph of code.
656 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
659 /* Find the right symtab. */
660 ALL_SYMTABS (objfile
, s
)
662 bv
= BLOCKVECTOR (s
);
663 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
664 if (BLOCK_START (b
) <= BLOCK_START (block
)
665 && BLOCK_END (b
) > BLOCK_START (block
))
667 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
673 return fixup_symbol_section (sym
, objfile
);
680 /* C++: If requested to do so by the caller,
681 check to see if NAME is a field of `this'. */
682 if (is_a_field_of_this
)
684 struct value
*v
= value_of_this (0);
686 *is_a_field_of_this
= 0;
687 if (v
&& check_field (v
, name
))
689 *is_a_field_of_this
= 1;
696 /* Now search all global blocks. Do the symtab's first, then
697 check the psymtab's. If a psymtab indicates the existence
698 of the desired name as a global, then do psymtab-to-symtab
699 conversion on the fly and return the found symbol. */
701 ALL_SYMTABS (objfile
, s
)
703 bv
= BLOCKVECTOR (s
);
704 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
705 sym
= lookup_block_symbol (block
, name
, namespace);
711 return fixup_symbol_section (sym
, objfile
);
717 /* Check for the possibility of the symbol being a function or
718 a mangled variable that is stored in one of the minimal symbol tables.
719 Eventually, all global symbols might be resolved in this way. */
721 if (namespace == VAR_NAMESPACE
)
723 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
726 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
727 SYMBOL_BFD_SECTION (msymbol
));
730 /* This is a function which has a symtab for its address. */
731 bv
= BLOCKVECTOR (s
);
732 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
733 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
735 /* We kept static functions in minimal symbol table as well as
736 in static scope. We want to find them in the symbol table. */
739 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
740 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
744 /* sym == 0 if symbol was found in the minimal symbol table
745 but not in the symtab.
746 Return 0 to use the msymbol definition of "foo_".
748 This happens for Fortran "foo_" symbols,
749 which are "foo" in the symtab.
751 This can also happen if "asm" is used to make a
752 regular symbol but not a debugging symbol, e.g.
759 return fixup_symbol_section (sym
, objfile
);
761 else if (MSYMBOL_TYPE (msymbol
) != mst_text
762 && MSYMBOL_TYPE (msymbol
) != mst_file_text
763 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
765 /* This is a mangled variable, look it up by its
767 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
768 namespace, is_a_field_of_this
, symtab
);
770 /* There are no debug symbols for this file, or we are looking
771 for an unmangled variable.
772 Try to find a matching static symbol below. */
778 ALL_PSYMTABS (objfile
, ps
)
780 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
782 s
= PSYMTAB_TO_SYMTAB (ps
);
783 bv
= BLOCKVECTOR (s
);
784 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
785 sym
= lookup_block_symbol (block
, name
, namespace);
788 /* This shouldn't be necessary, but as a last resort
789 * try looking in the statics even though the psymtab
790 * claimed the symbol was global. It's possible that
791 * the psymtab gets it wrong in some cases.
793 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
794 sym
= lookup_block_symbol (block
, name
, namespace);
796 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
797 %s may be an inlined function, or may be a template function\n\
798 (if a template, try specifying an instantiation: %s<type>).",
799 name
, ps
->filename
, name
, name
);
803 return fixup_symbol_section (sym
, objfile
);
807 /* Now search all static file-level symbols.
808 Not strictly correct, but more useful than an error.
809 Do the symtabs first, then check the psymtabs.
810 If a psymtab indicates the existence
811 of the desired name as a file-level static, then do psymtab-to-symtab
812 conversion on the fly and return the found symbol. */
814 ALL_SYMTABS (objfile
, s
)
816 bv
= BLOCKVECTOR (s
);
817 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
818 sym
= lookup_block_symbol (block
, name
, namespace);
824 return fixup_symbol_section (sym
, objfile
);
828 ALL_PSYMTABS (objfile
, ps
)
830 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
832 s
= PSYMTAB_TO_SYMTAB (ps
);
833 bv
= BLOCKVECTOR (s
);
834 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
835 sym
= lookup_block_symbol (block
, name
, namespace);
838 /* This shouldn't be necessary, but as a last resort
839 * try looking in the globals even though the psymtab
840 * claimed the symbol was static. It's possible that
841 * the psymtab gets it wrong in some cases.
843 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
844 sym
= lookup_block_symbol (block
, name
, namespace);
846 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
847 %s may be an inlined function, or may be a template function\n\
848 (if a template, try specifying an instantiation: %s<type>).",
849 name
, ps
->filename
, name
, name
);
853 return fixup_symbol_section (sym
, objfile
);
859 /* Check for the possibility of the symbol being a function or
860 a global variable that is stored in one of the minimal symbol tables.
861 The "minimal symbol table" is built from linker-supplied info.
863 RT: I moved this check to last, after the complete search of
864 the global (p)symtab's and static (p)symtab's. For HP-generated
865 symbol tables, this check was causing a premature exit from
866 lookup_symbol with NULL return, and thus messing up symbol lookups
867 of things like "c::f". It seems to me a check of the minimal
868 symbol table ought to be a last resort in any case. I'm vaguely
869 worried about the comment below which talks about FORTRAN routines "foo_"
870 though... is it saying we need to do the "minsym" check before
871 the static check in this case?
874 if (namespace == VAR_NAMESPACE
)
876 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
879 /* OK, we found a minimal symbol in spite of not
880 * finding any symbol. There are various possible
881 * explanations for this. One possibility is the symbol
882 * exists in code not compiled -g. Another possibility
883 * is that the 'psymtab' isn't doing its job.
884 * A third possibility, related to #2, is that we were confused
885 * by name-mangling. For instance, maybe the psymtab isn't
886 * doing its job because it only know about demangled
887 * names, but we were given a mangled name...
890 /* We first use the address in the msymbol to try to
891 * locate the appropriate symtab. Note that find_pc_symtab()
892 * has a side-effect of doing psymtab-to-symtab expansion,
893 * for the found symtab.
895 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
898 bv
= BLOCKVECTOR (s
);
899 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
900 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
902 /* We kept static functions in minimal symbol table as well as
903 in static scope. We want to find them in the symbol table. */
906 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
907 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
910 /* If we found one, return it */
918 /* If we get here with sym == 0, the symbol was
919 found in the minimal symbol table
920 but not in the symtab.
921 Fall through and return 0 to use the msymbol
922 definition of "foo_".
923 (Note that outer code generally follows up a call
924 to this routine with a call to lookup_minimal_symbol(),
925 so a 0 return means we'll just flow into that other routine).
927 This happens for Fortran "foo_" symbols,
928 which are "foo" in the symtab.
930 This can also happen if "asm" is used to make a
931 regular symbol but not a debugging symbol, e.g.
937 /* If the lookup-by-address fails, try repeating the
938 * entire lookup process with the symbol name from
939 * the msymbol (if different from the original symbol name).
941 else if (MSYMBOL_TYPE (msymbol
) != mst_text
942 && MSYMBOL_TYPE (msymbol
) != mst_file_text
943 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
945 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
946 namespace, is_a_field_of_this
, symtab
);
958 /* Look, in partial_symtab PST, for symbol NAME. Check the global
959 symbols if GLOBAL, the static symbols if not */
961 static struct partial_symbol
*
962 lookup_partial_symbol (pst
, name
, global
, namespace)
963 struct partial_symtab
*pst
;
966 namespace_enum
namespace;
968 struct partial_symbol
*temp
;
969 struct partial_symbol
**start
, **psym
;
970 struct partial_symbol
**top
, **bottom
, **center
;
971 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
972 int do_linear_search
= 1;
979 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
980 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
982 if (global
) /* This means we can use a binary search. */
984 do_linear_search
= 0;
986 /* Binary search. This search is guaranteed to end with center
987 pointing at the earliest partial symbol with the correct
988 name. At that point *all* partial symbols with that name
989 will be checked against the correct namespace. */
992 top
= start
+ length
- 1;
995 center
= bottom
+ (top
- bottom
) / 2;
998 if (!do_linear_search
999 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1001 do_linear_search
= 1;
1003 if (STRCMP (SYMBOL_NAME (*center
), name
) >= 0)
1009 bottom
= center
+ 1;
1012 if (!(top
== bottom
))
1015 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1016 we don't have to force a linear search on C++. Probably holds true
1017 for JAVA as well, no way to check.*/
1018 while (SYMBOL_MATCHES_NAME (*top
,name
))
1020 if (SYMBOL_NAMESPACE (*top
) == namespace)
1028 /* Can't use a binary search or else we found during the binary search that
1029 we should also do a linear search. */
1031 if (do_linear_search
)
1033 for (psym
= start
; psym
< start
+ length
; psym
++)
1035 if (namespace == SYMBOL_NAMESPACE (*psym
))
1037 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1048 /* Look up a type named NAME in the struct_namespace. The type returned
1049 must not be opaque -- i.e., must have at least one field defined
1051 This code was modelled on lookup_symbol -- the parts not relevant to looking
1052 up types were just left out. In particular it's assumed here that types
1053 are available in struct_namespace and only at file-static or global blocks. */
1057 lookup_transparent_type (name
)
1060 register struct symbol
*sym
;
1061 register struct symtab
*s
= NULL
;
1062 register struct partial_symtab
*ps
;
1063 struct blockvector
*bv
;
1064 register struct objfile
*objfile
;
1065 register struct block
*block
;
1067 /* Now search all the global symbols. Do the symtab's first, then
1068 check the psymtab's. If a psymtab indicates the existence
1069 of the desired name as a global, then do psymtab-to-symtab
1070 conversion on the fly and return the found symbol. */
1072 ALL_SYMTABS (objfile
, s
)
1074 bv
= BLOCKVECTOR (s
);
1075 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1076 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1077 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1079 return SYMBOL_TYPE (sym
);
1083 ALL_PSYMTABS (objfile
, ps
)
1085 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1087 s
= PSYMTAB_TO_SYMTAB (ps
);
1088 bv
= BLOCKVECTOR (s
);
1089 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1090 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1093 /* This shouldn't be necessary, but as a last resort
1094 * try looking in the statics even though the psymtab
1095 * claimed the symbol was global. It's possible that
1096 * the psymtab gets it wrong in some cases.
1098 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1099 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1101 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1102 %s may be an inlined function, or may be a template function\n\
1103 (if a template, try specifying an instantiation: %s<type>).",
1104 name
, ps
->filename
, name
, name
);
1106 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1107 return SYMBOL_TYPE (sym
);
1111 /* Now search the static file-level symbols.
1112 Not strictly correct, but more useful than an error.
1113 Do the symtab's first, then
1114 check the psymtab's. If a psymtab indicates the existence
1115 of the desired name as a file-level static, then do psymtab-to-symtab
1116 conversion on the fly and return the found symbol.
1119 ALL_SYMTABS (objfile
, s
)
1121 bv
= BLOCKVECTOR (s
);
1122 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1123 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1124 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1126 return SYMBOL_TYPE (sym
);
1130 ALL_PSYMTABS (objfile
, ps
)
1132 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1134 s
= PSYMTAB_TO_SYMTAB (ps
);
1135 bv
= BLOCKVECTOR (s
);
1136 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1137 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1140 /* This shouldn't be necessary, but as a last resort
1141 * try looking in the globals even though the psymtab
1142 * claimed the symbol was static. It's possible that
1143 * the psymtab gets it wrong in some cases.
1145 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1146 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1148 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1149 %s may be an inlined function, or may be a template function\n\
1150 (if a template, try specifying an instantiation: %s<type>).",
1151 name
, ps
->filename
, name
, name
);
1153 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1154 return SYMBOL_TYPE (sym
);
1157 return (struct type
*) 0;
1161 /* Find the psymtab containing main(). */
1162 /* FIXME: What about languages without main() or specially linked
1163 executables that have no main() ? */
1165 struct partial_symtab
*
1166 find_main_psymtab ()
1168 register struct partial_symtab
*pst
;
1169 register struct objfile
*objfile
;
1171 ALL_PSYMTABS (objfile
, pst
)
1173 if (lookup_partial_symbol (pst
, "main", 1, VAR_NAMESPACE
))
1181 /* Search BLOCK for symbol NAME in NAMESPACE.
1183 Note that if NAME is the demangled form of a C++ symbol, we will fail
1184 to find a match during the binary search of the non-encoded names, but
1185 for now we don't worry about the slight inefficiency of looking for
1186 a match we'll never find, since it will go pretty quick. Once the
1187 binary search terminates, we drop through and do a straight linear
1188 search on the symbols. Each symbol which is marked as being a C++
1189 symbol (language_cplus set) has both the encoded and non-encoded names
1190 tested for a match. */
1193 lookup_block_symbol (block
, name
, namespace)
1194 register const struct block
*block
;
1196 const namespace_enum
namespace;
1198 register int bot
, top
, inc
;
1199 register struct symbol
*sym
;
1200 register struct symbol
*sym_found
= NULL
;
1201 register int do_linear_search
= 1;
1203 /* If the blocks's symbols were sorted, start with a binary search. */
1205 if (BLOCK_SHOULD_SORT (block
))
1207 /* Reset the linear search flag so if the binary search fails, we
1208 won't do the linear search once unless we find some reason to
1209 do so, such as finding a C++ symbol during the binary search.
1210 Note that for C++ modules, ALL the symbols in a block should
1211 end up marked as C++ symbols. */
1213 do_linear_search
= 0;
1214 top
= BLOCK_NSYMS (block
);
1217 /* Advance BOT to not far before the first symbol whose name is NAME. */
1221 inc
= (top
- bot
+ 1);
1222 /* No need to keep binary searching for the last few bits worth. */
1227 inc
= (inc
>> 1) + bot
;
1228 sym
= BLOCK_SYM (block
, inc
);
1229 if (!do_linear_search
1230 && (SYMBOL_LANGUAGE (sym
) == language_cplus
1231 || SYMBOL_LANGUAGE (sym
) == language_java
1234 do_linear_search
= 1;
1236 if (SYMBOL_NAME (sym
)[0] < name
[0])
1240 else if (SYMBOL_NAME (sym
)[0] > name
[0])
1244 else if (STRCMP (SYMBOL_NAME (sym
), name
) < 0)
1254 /* Now scan forward until we run out of symbols, find one whose
1255 name is greater than NAME, or find one we want. If there is
1256 more than one symbol with the right name and namespace, we
1257 return the first one; I believe it is now impossible for us
1258 to encounter two symbols with the same name and namespace
1259 here, because blocks containing argument symbols are no
1262 top
= BLOCK_NSYMS (block
);
1265 sym
= BLOCK_SYM (block
, bot
);
1266 inc
= SYMBOL_NAME (sym
)[0] - name
[0];
1269 inc
= STRCMP (SYMBOL_NAME (sym
), name
);
1271 if (inc
== 0 && SYMBOL_NAMESPACE (sym
) == namespace)
1283 /* Here if block isn't sorted, or we fail to find a match during the
1284 binary search above. If during the binary search above, we find a
1285 symbol which is a C++ symbol, then we have re-enabled the linear
1286 search flag which was reset when starting the binary search.
1288 This loop is equivalent to the loop above, but hacked greatly for speed.
1290 Note that parameter symbols do not always show up last in the
1291 list; this loop makes sure to take anything else other than
1292 parameter symbols first; it only uses parameter symbols as a
1293 last resort. Note that this only takes up extra computation
1296 if (do_linear_search
)
1298 top
= BLOCK_NSYMS (block
);
1302 sym
= BLOCK_SYM (block
, bot
);
1303 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1304 SYMBOL_MATCHES_NAME (sym
, name
))
1306 /* If SYM has aliases, then use any alias that is active
1307 at the current PC. If no alias is active at the current
1308 PC, then use the main symbol.
1310 ?!? Is checking the current pc correct? Is this routine
1311 ever called to look up a symbol from another context?
1313 FIXME: No, it's not correct. If someone sets a
1314 conditional breakpoint at an address, then the
1315 breakpoint's `struct expression' should refer to the
1316 `struct symbol' appropriate for the breakpoint's
1317 address, which may not be the PC.
1319 Even if it were never called from another context,
1320 it's totally bizarre for lookup_symbol's behavior to
1321 depend on the value of the inferior's current PC. We
1322 should pass in the appropriate PC as well as the
1323 block. The interface to lookup_symbol should change
1324 to require the caller to provide a PC. */
1326 if (SYMBOL_ALIASES (sym
))
1327 sym
= find_active_alias (sym
, read_pc ());
1330 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1331 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1332 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1333 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1334 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1335 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1343 return (sym_found
); /* Will be NULL if not found. */
1346 /* Given a main symbol SYM and ADDR, search through the alias
1347 list to determine if an alias is active at ADDR and return
1350 If no alias is active, then return SYM. */
1352 static struct symbol
*
1353 find_active_alias (sym
, addr
)
1357 struct range_list
*r
;
1358 struct alias_list
*aliases
;
1360 /* If we have aliases, check them first. */
1361 aliases
= SYMBOL_ALIASES (sym
);
1365 if (!SYMBOL_RANGES (aliases
->sym
))
1366 return aliases
->sym
;
1367 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1369 if (r
->start
<= addr
&& r
->end
> addr
)
1370 return aliases
->sym
;
1372 aliases
= aliases
->next
;
1375 /* Nothing found, return the main symbol. */
1380 /* Return the symbol for the function which contains a specified
1381 lexical block, described by a struct block BL. */
1387 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1388 bl
= BLOCK_SUPERBLOCK (bl
);
1390 return BLOCK_FUNCTION (bl
);
1393 /* Find the symtab associated with PC and SECTION. Look through the
1394 psymtabs and read in another symtab if necessary. */
1397 find_pc_sect_symtab (pc
, section
)
1401 register struct block
*b
;
1402 struct blockvector
*bv
;
1403 register struct symtab
*s
= NULL
;
1404 register struct symtab
*best_s
= NULL
;
1405 register struct partial_symtab
*ps
;
1406 register struct objfile
*objfile
;
1407 CORE_ADDR distance
= 0;
1409 /* Search all symtabs for the one whose file contains our address, and which
1410 is the smallest of all the ones containing the address. This is designed
1411 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1412 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1413 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1415 This happens for native ecoff format, where code from included files
1416 gets its own symtab. The symtab for the included file should have
1417 been read in already via the dependency mechanism.
1418 It might be swifter to create several symtabs with the same name
1419 like xcoff does (I'm not sure).
1421 It also happens for objfiles that have their functions reordered.
1422 For these, the symtab we are looking for is not necessarily read in. */
1424 ALL_SYMTABS (objfile
, s
)
1426 bv
= BLOCKVECTOR (s
);
1427 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1429 if (BLOCK_START (b
) <= pc
1430 && BLOCK_END (b
) > pc
1432 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1434 /* For an objfile that has its functions reordered,
1435 find_pc_psymtab will find the proper partial symbol table
1436 and we simply return its corresponding symtab. */
1437 /* In order to better support objfiles that contain both
1438 stabs and coff debugging info, we continue on if a psymtab
1440 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1442 ps
= find_pc_sect_psymtab (pc
, section
);
1444 return PSYMTAB_TO_SYMTAB (ps
);
1450 for (i
= 0; i
< b
->nsyms
; i
++)
1452 fixup_symbol_section (b
->sym
[i
], objfile
);
1453 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1457 continue; /* no symbol in this symtab matches section */
1459 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1468 ps
= find_pc_sect_psymtab (pc
, section
);
1472 /* Might want to error() here (in case symtab is corrupt and
1473 will cause a core dump), but maybe we can successfully
1474 continue, so let's not. */
1476 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1478 s
= PSYMTAB_TO_SYMTAB (ps
);
1483 /* Find the symtab associated with PC. Look through the psymtabs and
1484 read in another symtab if necessary. Backward compatibility, no section */
1490 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1496 /* Find the closest symbol value (of any sort -- function or variable)
1497 for a given address value. Slow but complete. (currently unused,
1498 mainly because it is too slow. We could fix it if each symtab and
1499 psymtab had contained in it the addresses ranges of each of its
1500 sections, which also would be required to make things like "info
1501 line *0x2345" cause psymtabs to be converted to symtabs). */
1504 find_addr_symbol (addr
, symtabp
, symaddrp
)
1506 struct symtab
**symtabp
;
1507 CORE_ADDR
*symaddrp
;
1509 struct symtab
*symtab
, *best_symtab
;
1510 struct objfile
*objfile
;
1511 register int bot
, top
;
1512 register struct symbol
*sym
;
1513 register CORE_ADDR sym_addr
;
1514 struct block
*block
;
1517 /* Info on best symbol seen so far */
1519 register CORE_ADDR best_sym_addr
= 0;
1520 struct symbol
*best_sym
= 0;
1522 /* FIXME -- we should pull in all the psymtabs, too! */
1523 ALL_SYMTABS (objfile
, symtab
)
1525 /* Search the global and static blocks in this symtab for
1526 the closest symbol-address to the desired address. */
1528 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1531 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1532 top
= BLOCK_NSYMS (block
);
1533 for (bot
= 0; bot
< top
; bot
++)
1535 sym
= BLOCK_SYM (block
, bot
);
1536 switch (SYMBOL_CLASS (sym
))
1540 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1544 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1545 /* An indirect symbol really lives at *sym_addr,
1546 * so an indirection needs to be done.
1547 * However, I am leaving this commented out because it's
1548 * expensive, and it's possible that symbolization
1549 * could be done without an active process (in
1550 * case this read_memory will fail). RT
1551 sym_addr = read_memory_unsigned_integer
1552 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1557 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1564 if (sym_addr
<= addr
)
1565 if (sym_addr
> best_sym_addr
)
1567 /* Quit if we found an exact match. */
1569 best_sym_addr
= sym_addr
;
1570 best_symtab
= symtab
;
1571 if (sym_addr
== addr
)
1580 *symtabp
= best_symtab
;
1582 *symaddrp
= best_sym_addr
;
1587 /* Find the source file and line number for a given PC value and section.
1588 Return a structure containing a symtab pointer, a line number,
1589 and a pc range for the entire source line.
1590 The value's .pc field is NOT the specified pc.
1591 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1592 use the line that ends there. Otherwise, in that case, the line
1593 that begins there is used. */
1595 /* The big complication here is that a line may start in one file, and end just
1596 before the start of another file. This usually occurs when you #include
1597 code in the middle of a subroutine. To properly find the end of a line's PC
1598 range, we must search all symtabs associated with this compilation unit, and
1599 find the one whose first PC is closer than that of the next line in this
1602 /* If it's worth the effort, we could be using a binary search. */
1604 struct symtab_and_line
1605 find_pc_sect_line (pc
, section
, notcurrent
)
1607 struct sec
*section
;
1611 register struct linetable
*l
;
1614 register struct linetable_entry
*item
;
1615 struct symtab_and_line val
;
1616 struct blockvector
*bv
;
1617 struct minimal_symbol
*msymbol
;
1618 struct minimal_symbol
*mfunsym
;
1620 /* Info on best line seen so far, and where it starts, and its file. */
1622 struct linetable_entry
*best
= NULL
;
1623 CORE_ADDR best_end
= 0;
1624 struct symtab
*best_symtab
= 0;
1626 /* Store here the first line number
1627 of a file which contains the line at the smallest pc after PC.
1628 If we don't find a line whose range contains PC,
1629 we will use a line one less than this,
1630 with a range from the start of that file to the first line's pc. */
1631 struct linetable_entry
*alt
= NULL
;
1632 struct symtab
*alt_symtab
= 0;
1634 /* Info on best line seen in this file. */
1636 struct linetable_entry
*prev
;
1638 /* If this pc is not from the current frame,
1639 it is the address of the end of a call instruction.
1640 Quite likely that is the start of the following statement.
1641 But what we want is the statement containing the instruction.
1642 Fudge the pc to make sure we get that. */
1644 INIT_SAL (&val
); /* initialize to zeroes */
1649 /* elz: added this because this function returned the wrong
1650 information if the pc belongs to a stub (import/export)
1651 to call a shlib function. This stub would be anywhere between
1652 two functions in the target, and the line info was erroneously
1653 taken to be the one of the line before the pc.
1655 /* RT: Further explanation:
1657 * We have stubs (trampolines) inserted between procedures.
1659 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1660 * exists in the main image.
1662 * In the minimal symbol table, we have a bunch of symbols
1663 * sorted by start address. The stubs are marked as "trampoline",
1664 * the others appear as text. E.g.:
1666 * Minimal symbol table for main image
1667 * main: code for main (text symbol)
1668 * shr1: stub (trampoline symbol)
1669 * foo: code for foo (text symbol)
1671 * Minimal symbol table for "shr1" image:
1673 * shr1: code for shr1 (text symbol)
1676 * So the code below is trying to detect if we are in the stub
1677 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1678 * and if found, do the symbolization from the real-code address
1679 * rather than the stub address.
1681 * Assumptions being made about the minimal symbol table:
1682 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1683 * if we're really in the trampoline. If we're beyond it (say
1684 * we're in "foo" in the above example), it'll have a closer
1685 * symbol (the "foo" text symbol for example) and will not
1686 * return the trampoline.
1687 * 2. lookup_minimal_symbol_text() will find a real text symbol
1688 * corresponding to the trampoline, and whose address will
1689 * be different than the trampoline address. I put in a sanity
1690 * check for the address being the same, to avoid an
1691 * infinite recursion.
1693 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1694 if (msymbol
!= NULL
)
1695 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1697 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1698 if (mfunsym
== NULL
)
1699 /* I eliminated this warning since it is coming out
1700 * in the following situation:
1701 * gdb shmain // test program with shared libraries
1702 * (gdb) break shr1 // function in shared lib
1703 * Warning: In stub for ...
1704 * In the above situation, the shared lib is not loaded yet,
1705 * so of course we can't find the real func/line info,
1706 * but the "break" still works, and the warning is annoying.
1707 * So I commented out the warning. RT */
1708 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1710 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1711 /* Avoid infinite recursion */
1712 /* See above comment about why warning is commented out */
1713 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1716 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1720 s
= find_pc_sect_symtab (pc
, section
);
1723 /* if no symbol information, return previous pc */
1730 bv
= BLOCKVECTOR (s
);
1732 /* Look at all the symtabs that share this blockvector.
1733 They all have the same apriori range, that we found was right;
1734 but they have different line tables. */
1736 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1738 /* Find the best line in this symtab. */
1745 /* I think len can be zero if the symtab lacks line numbers
1746 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1747 I'm not sure which, and maybe it depends on the symbol
1753 item
= l
->item
; /* Get first line info */
1755 /* Is this file's first line closer than the first lines of other files?
1756 If so, record this file, and its first line, as best alternate. */
1757 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1763 for (i
= 0; i
< len
; i
++, item
++)
1765 /* Leave prev pointing to the linetable entry for the last line
1766 that started at or before PC. */
1773 /* At this point, prev points at the line whose start addr is <= pc, and
1774 item points at the next line. If we ran off the end of the linetable
1775 (pc >= start of the last line), then prev == item. If pc < start of
1776 the first line, prev will not be set. */
1778 /* Is this file's best line closer than the best in the other files?
1779 If so, record this file, and its best line, as best so far. */
1781 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1785 /* If another line is in the linetable, and its PC is closer
1786 than the best_end we currently have, take it as best_end. */
1787 if (i
< len
&& (best_end
== 0 || best_end
> item
->pc
))
1788 best_end
= item
->pc
;
1795 { /* If we didn't find any line # info, just
1801 val
.symtab
= alt_symtab
;
1802 val
.line
= alt
->line
- 1;
1804 /* Don't return line 0, that means that we didn't find the line. */
1808 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1814 val
.symtab
= best_symtab
;
1815 val
.line
= best
->line
;
1817 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1822 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1824 val
.section
= section
;
1828 /* Backward compatibility (no section) */
1830 struct symtab_and_line
1831 find_pc_line (pc
, notcurrent
)
1837 section
= find_pc_overlay (pc
);
1838 if (pc_in_unmapped_range (pc
, section
))
1839 pc
= overlay_mapped_address (pc
, section
);
1840 return find_pc_sect_line (pc
, section
, notcurrent
);
1844 static struct symtab
*find_line_symtab (struct symtab
*, int, int *, int *);
1846 /* Find line number LINE in any symtab whose name is the same as
1849 If found, return the symtab that contains the linetable in which it was
1850 found, set *INDEX to the index in the linetable of the best entry
1851 found, and set *EXACT_MATCH nonzero if the value returned is an
1854 If not found, return NULL. */
1856 static struct symtab
*
1857 find_line_symtab (symtab
, line
, index
, exact_match
)
1858 struct symtab
*symtab
;
1865 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1869 struct linetable
*best_linetable
;
1870 struct symtab
*best_symtab
;
1872 /* First try looking it up in the given symtab. */
1873 best_linetable
= LINETABLE (symtab
);
1874 best_symtab
= symtab
;
1875 best_index
= find_line_common (best_linetable
, line
, &exact
);
1876 if (best_index
< 0 || !exact
)
1878 /* Didn't find an exact match. So we better keep looking for
1879 another symtab with the same name. In the case of xcoff,
1880 multiple csects for one source file (produced by IBM's FORTRAN
1881 compiler) produce multiple symtabs (this is unavoidable
1882 assuming csects can be at arbitrary places in memory and that
1883 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1885 /* BEST is the smallest linenumber > LINE so far seen,
1886 or 0 if none has been seen so far.
1887 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1890 struct objfile
*objfile
;
1893 if (best_index
>= 0)
1894 best
= best_linetable
->item
[best_index
].line
;
1898 ALL_SYMTABS (objfile
, s
)
1900 struct linetable
*l
;
1903 if (!STREQ (symtab
->filename
, s
->filename
))
1906 ind
= find_line_common (l
, line
, &exact
);
1916 if (best
== 0 || l
->item
[ind
].line
< best
)
1918 best
= l
->item
[ind
].line
;
1931 *index
= best_index
;
1933 *exact_match
= exact
;
1938 /* Set the PC value for a given source file and line number and return true.
1939 Returns zero for invalid line number (and sets the PC to 0).
1940 The source file is specified with a struct symtab. */
1943 find_line_pc (symtab
, line
, pc
)
1944 struct symtab
*symtab
;
1948 struct linetable
*l
;
1955 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1958 l
= LINETABLE (symtab
);
1959 *pc
= l
->item
[ind
].pc
;
1966 /* Find the range of pc values in a line.
1967 Store the starting pc of the line into *STARTPTR
1968 and the ending pc (start of next line) into *ENDPTR.
1969 Returns 1 to indicate success.
1970 Returns 0 if could not find the specified line. */
1973 find_line_pc_range (sal
, startptr
, endptr
)
1974 struct symtab_and_line sal
;
1975 CORE_ADDR
*startptr
, *endptr
;
1977 CORE_ADDR startaddr
;
1978 struct symtab_and_line found_sal
;
1981 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1984 /* This whole function is based on address. For example, if line 10 has
1985 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1986 "info line *0x123" should say the line goes from 0x100 to 0x200
1987 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1988 This also insures that we never give a range like "starts at 0x134
1989 and ends at 0x12c". */
1991 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1992 if (found_sal
.line
!= sal
.line
)
1994 /* The specified line (sal) has zero bytes. */
1995 *startptr
= found_sal
.pc
;
1996 *endptr
= found_sal
.pc
;
2000 *startptr
= found_sal
.pc
;
2001 *endptr
= found_sal
.end
;
2006 /* Given a line table and a line number, return the index into the line
2007 table for the pc of the nearest line whose number is >= the specified one.
2008 Return -1 if none is found. The value is >= 0 if it is an index.
2010 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2013 find_line_common (l
, lineno
, exact_match
)
2014 register struct linetable
*l
;
2015 register int lineno
;
2021 /* BEST is the smallest linenumber > LINENO so far seen,
2022 or 0 if none has been seen so far.
2023 BEST_INDEX identifies the item for it. */
2025 int best_index
= -1;
2034 for (i
= 0; i
< len
; i
++)
2036 register struct linetable_entry
*item
= &(l
->item
[i
]);
2038 if (item
->line
== lineno
)
2040 /* Return the first (lowest address) entry which matches. */
2045 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2052 /* If we got here, we didn't get an exact match. */
2059 find_pc_line_pc_range (pc
, startptr
, endptr
)
2061 CORE_ADDR
*startptr
, *endptr
;
2063 struct symtab_and_line sal
;
2064 sal
= find_pc_line (pc
, 0);
2067 return sal
.symtab
!= 0;
2070 /* Given a function symbol SYM, find the symtab and line for the start
2072 If the argument FUNFIRSTLINE is nonzero, we want the first line
2073 of real code inside the function. */
2075 static struct symtab_and_line
2076 find_function_start_sal (struct symbol
*sym
, int);
2078 static struct symtab_and_line
2079 find_function_start_sal (sym
, funfirstline
)
2084 struct symtab_and_line sal
;
2086 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2087 fixup_symbol_section (sym
, NULL
);
2089 { /* skip "first line" of function (which is actually its prologue) */
2090 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2091 /* If function is in an unmapped overlay, use its unmapped LMA
2092 address, so that SKIP_PROLOGUE has something unique to work on */
2093 if (section_is_overlay (section
) &&
2094 !section_is_mapped (section
))
2095 pc
= overlay_unmapped_address (pc
, section
);
2097 pc
+= FUNCTION_START_OFFSET
;
2098 pc
= SKIP_PROLOGUE (pc
);
2100 /* For overlays, map pc back into its mapped VMA range */
2101 pc
= overlay_mapped_address (pc
, section
);
2103 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2105 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2106 /* Convex: no need to suppress code on first line, if any */
2109 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2110 line is still part of the same function. */
2112 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2113 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2115 /* First pc of next line */
2117 /* Recalculate the line number (might not be N+1). */
2118 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2126 /* If P is of the form "operator[ \t]+..." where `...' is
2127 some legitimate operator text, return a pointer to the
2128 beginning of the substring of the operator text.
2129 Otherwise, return "". */
2131 operator_chars (p
, end
)
2136 if (strncmp (p
, "operator", 8))
2140 /* Don't get faked out by `operator' being part of a longer
2142 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2145 /* Allow some whitespace between `operator' and the operator symbol. */
2146 while (*p
== ' ' || *p
== '\t')
2149 /* Recognize 'operator TYPENAME'. */
2151 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2153 register char *q
= p
+ 1;
2154 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2179 if (p
[1] == '=' || p
[1] == p
[0])
2190 error ("`operator ()' must be specified without whitespace in `()'");
2195 error ("`operator ?:' must be specified without whitespace in `?:'");
2200 error ("`operator []' must be specified without whitespace in `[]'");
2204 error ("`operator %s' not supported", p
);
2211 /* Return the number of methods described for TYPE, including the
2212 methods from types it derives from. This can't be done in the symbol
2213 reader because the type of the baseclass might still be stubbed
2214 when the definition of the derived class is parsed. */
2216 static int total_number_of_methods (struct type
*type
);
2219 total_number_of_methods (type
)
2225 CHECK_TYPEDEF (type
);
2226 if (TYPE_CPLUS_SPECIFIC (type
) == NULL
)
2228 count
= TYPE_NFN_FIELDS_TOTAL (type
);
2230 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2231 count
+= total_number_of_methods (TYPE_BASECLASS (type
, n
));
2236 /* Recursive helper function for decode_line_1.
2237 Look for methods named NAME in type T.
2238 Return number of matches.
2239 Put matches in SYM_ARR, which should have been allocated with
2240 a size of total_number_of_methods (T) * sizeof (struct symbol *).
2241 Note that this function is g++ specific. */
2244 find_methods (t
, name
, sym_arr
)
2247 struct symbol
**sym_arr
;
2251 struct symbol
*sym_class
;
2252 char *class_name
= type_name_no_tag (t
);
2254 /* Ignore this class if it doesn't have a name. This is ugly, but
2255 unless we figure out how to get the physname without the name of
2256 the class, then the loop can't do any good. */
2258 && (sym_class
= lookup_symbol (class_name
,
2259 (struct block
*) NULL
,
2262 (struct symtab
**) NULL
)))
2266 /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */
2267 t
= SYMBOL_TYPE (sym_class
);
2269 /* Loop over each method name. At this level, all overloads of a name
2270 are counted as a single name. There is an inner loop which loops over
2273 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
2274 method_counter
>= 0;
2278 char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
2279 char dem_opname
[64];
2281 if (strncmp (method_name
, "__", 2) == 0 ||
2282 strncmp (method_name
, "op", 2) == 0 ||
2283 strncmp (method_name
, "type", 4) == 0)
2285 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
2286 method_name
= dem_opname
;
2287 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
2288 method_name
= dem_opname
;
2291 if (STREQ (name
, method_name
))
2292 /* Find all the overloaded methods with that name. */
2293 for (field_counter
= TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
2300 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
2302 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
2306 tmp_name
= gdb_mangle_name (t
,
2309 phys_name
= alloca (strlen (tmp_name
) + 1);
2310 strcpy (phys_name
, tmp_name
);
2314 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
2316 /* Destructor is handled by caller, dont add it to the list */
2317 if (DESTRUCTOR_PREFIX_P (phys_name
))
2320 sym_arr
[i1
] = lookup_symbol (phys_name
,
2321 NULL
, VAR_NAMESPACE
,
2323 (struct symtab
**) NULL
);
2328 /* This error message gets printed, but the method
2329 still seems to be found
2330 fputs_filtered("(Cannot find method ", gdb_stdout);
2331 fprintf_symbol_filtered (gdb_stdout, phys_name,
2333 DMGL_PARAMS | DMGL_ANSI);
2334 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
2341 /* Only search baseclasses if there is no match yet, since names in
2342 derived classes override those in baseclasses.
2344 FIXME: The above is not true; it is only true of member functions
2345 if they have the same number of arguments (??? - section 13.1 of the
2346 ARM says the function members are not in the same scope but doesn't
2347 really spell out the rules in a way I understand. In any case, if
2348 the number of arguments differ this is a case in which we can overload
2349 rather than hiding without any problem, and gcc 2.4.5 does overload
2350 rather than hiding in this case). */
2353 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
2354 i1
+= find_methods (TYPE_BASECLASS (t
, ibase
), name
, sym_arr
+ i1
);
2359 /* Helper function for decode_line_1.
2360 Build a canonical line spec in CANONICAL if it is non-NULL and if
2361 the SAL has a symtab.
2362 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
2363 If SYMNAME is NULL the line number from SAL is used and the canonical
2364 line spec is `filename:linenum'. */
2367 build_canonical_line_spec (sal
, symname
, canonical
)
2368 struct symtab_and_line
*sal
;
2372 char **canonical_arr
;
2373 char *canonical_name
;
2375 struct symtab
*s
= sal
->symtab
;
2377 if (s
== (struct symtab
*) NULL
2378 || s
->filename
== (char *) NULL
2379 || canonical
== (char ***) NULL
)
2382 canonical_arr
= (char **) xmalloc (sizeof (char *));
2383 *canonical
= canonical_arr
;
2385 filename
= s
->filename
;
2386 if (symname
!= NULL
)
2388 canonical_name
= xmalloc (strlen (filename
) + strlen (symname
) + 2);
2389 sprintf (canonical_name
, "%s:%s", filename
, symname
);
2393 canonical_name
= xmalloc (strlen (filename
) + 30);
2394 sprintf (canonical_name
, "%s:%d", filename
, sal
->line
);
2396 canonical_arr
[0] = canonical_name
;
2401 /* Find an instance of the character C in the string S that is outside
2402 of all parenthesis pairs, single-quoted strings, and double-quoted
2405 find_toplevel_char (char *s
, char c
)
2407 int quoted
= 0; /* zero if we're not in quotes;
2408 '"' if we're in a double-quoted string;
2409 '\'' if we're in a single-quoted string. */
2410 int depth
= 0; /* number of unclosed parens we've seen */
2413 for (scan
= s
; *scan
; scan
++)
2417 if (*scan
== quoted
)
2419 else if (*scan
== '\\' && *(scan
+ 1))
2422 else if (*scan
== c
&& ! quoted
&& depth
== 0)
2424 else if (*scan
== '"' || *scan
== '\'')
2426 else if (*scan
== '(')
2428 else if (*scan
== ')' && depth
> 0)
2436 /* Parse a string that specifies a line number.
2437 Pass the address of a char * variable; that variable will be
2438 advanced over the characters actually parsed.
2442 LINENUM -- that line number in current file. PC returned is 0.
2443 FILE:LINENUM -- that line in that file. PC returned is 0.
2444 FUNCTION -- line number of openbrace of that function.
2445 PC returned is the start of the function.
2446 VARIABLE -- line number of definition of that variable.
2448 FILE:FUNCTION -- likewise, but prefer functions in that file.
2449 *EXPR -- line in which address EXPR appears.
2451 This may all be followed by an "if EXPR", which we ignore.
2453 FUNCTION may be an undebuggable function found in minimal symbol table.
2455 If the argument FUNFIRSTLINE is nonzero, we want the first line
2456 of real code inside a function when a function is specified, and it is
2457 not OK to specify a variable or type to get its line number.
2459 DEFAULT_SYMTAB specifies the file to use if none is specified.
2460 It defaults to current_source_symtab.
2461 DEFAULT_LINE specifies the line number to use for relative
2462 line numbers (that start with signs). Defaults to current_source_line.
2463 If CANONICAL is non-NULL, store an array of strings containing the canonical
2464 line specs there if necessary. Currently overloaded member functions and
2465 line numbers or static functions without a filename yield a canonical
2466 line spec. The array and the line spec strings are allocated on the heap,
2467 it is the callers responsibility to free them.
2469 Note that it is possible to return zero for the symtab
2470 if no file is validly specified. Callers must check that.
2471 Also, the line number returned may be invalid. */
2473 /* We allow single quotes in various places. This is a hideous
2474 kludge, which exists because the completer can't yet deal with the
2475 lack of single quotes. FIXME: write a linespec_completer which we
2476 can use as appropriate instead of make_symbol_completion_list. */
2478 struct symtabs_and_lines
2479 decode_line_1 (argptr
, funfirstline
, default_symtab
, default_line
, canonical
)
2482 struct symtab
*default_symtab
;
2486 struct symtabs_and_lines values
;
2487 #ifdef HPPA_COMPILER_BUG
2488 /* FIXME: The native HP 9000/700 compiler has a bug which appears
2489 when optimizing this file with target i960-vxworks. I haven't
2490 been able to construct a simple test case. The problem is that
2491 in the second call to SKIP_PROLOGUE below, the compiler somehow
2492 does not realize that the statement val = find_pc_line (...) will
2493 change the values of the fields of val. It extracts the elements
2494 into registers at the top of the block, and does not update the
2495 registers after the call to find_pc_line. You can check this by
2496 inserting a printf at the end of find_pc_line to show what values
2497 it is returning for val.pc and val.end and another printf after
2498 the call to see what values the function actually got (remember,
2499 this is compiling with cc -O, with this patch removed). You can
2500 also examine the assembly listing: search for the second call to
2501 skip_prologue; the LDO statement before the next call to
2502 find_pc_line loads the address of the structure which
2503 find_pc_line will return; if there is a LDW just before the LDO,
2504 which fetches an element of the structure, then the compiler
2507 Setting val to volatile avoids the problem. We must undef
2508 volatile, because the HPPA native compiler does not define
2509 __STDC__, although it does understand volatile, and so volatile
2510 will have been defined away in defs.h. */
2512 volatile struct symtab_and_line val
;
2513 #define volatile /*nothing */
2515 struct symtab_and_line val
;
2517 register char *p
, *p1
;
2518 char *q
, *pp
, *ii
, *p2
;
2522 register struct symtab
*s
;
2524 register struct symbol
*sym
;
2525 /* The symtab that SYM was found in. */
2526 struct symtab
*sym_symtab
;
2528 register CORE_ADDR pc
;
2529 register struct minimal_symbol
*msymbol
;
2531 struct symbol
*sym_class
;
2534 int is_quote_enclosed
;
2538 struct symbol
**sym_arr
;
2540 char *saved_arg
= *argptr
;
2541 extern char *gdb_completer_quote_characters
;
2543 INIT_SAL (&val
); /* initialize to zeroes */
2545 /* Defaults have defaults. */
2547 if (default_symtab
== 0)
2549 default_symtab
= current_source_symtab
;
2550 default_line
= current_source_line
;
2553 /* See if arg is *PC */
2555 if (**argptr
== '*')
2558 pc
= parse_and_eval_address_1 (argptr
);
2560 values
.sals
= (struct symtab_and_line
*)
2561 xmalloc (sizeof (struct symtab_and_line
));
2564 values
.sals
[0] = find_pc_line (pc
, 0);
2565 values
.sals
[0].pc
= pc
;
2566 values
.sals
[0].section
= find_pc_overlay (pc
);
2571 /* 'has_if' is for the syntax:
2572 * (gdb) break foo if (a==b)
2574 if ((ii
= strstr (*argptr
, " if ")) != NULL
||
2575 (ii
= strstr (*argptr
, "\tif ")) != NULL
||
2576 (ii
= strstr (*argptr
, " if\t")) != NULL
||
2577 (ii
= strstr (*argptr
, "\tif\t")) != NULL
||
2578 (ii
= strstr (*argptr
, " if(")) != NULL
||
2579 (ii
= strstr (*argptr
, "\tif( ")) != NULL
)
2581 /* Temporarily zap out "if (condition)" to not
2582 * confuse the parenthesis-checking code below.
2583 * This is undone below. Do not change ii!!
2590 /* Set various flags.
2591 * 'has_parens' is important for overload checking, where
2592 * we allow things like:
2593 * (gdb) break c::f(int)
2596 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2598 is_quoted
= (**argptr
2599 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
);
2601 has_parens
= ((pp
= strchr (*argptr
, '(')) != NULL
2602 && (pp
= strrchr (pp
, ')')) != NULL
);
2604 /* Now that we're safely past the has_parens check,
2605 * put back " if (condition)" so outer layers can see it
2610 /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
2611 and we must isolate the first half. Outer layers will call again later
2612 for the second half.
2614 Don't count commas that appear in argument lists of overloaded
2615 functions, or in quoted strings. It's stupid to go to this much
2616 trouble when the rest of the function is such an obvious roach hotel. */
2617 ii
= find_toplevel_char (*argptr
, ',');
2618 has_comma
= (ii
!= 0);
2620 /* Temporarily zap out second half to not
2621 * confuse the code below.
2622 * This is undone below. Do not change ii!!
2629 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2630 /* May also be CLASS::MEMBER, or NAMESPACE::NAME */
2631 /* Look for ':', but ignore inside of <> */
2637 is_quote_enclosed
= 1;
2641 is_quote_enclosed
= 0;
2646 char *temp_end
= find_template_name_end (p
);
2648 error ("malformed template specification in command");
2651 /* Check for the end of the first half of the linespec. End of line,
2652 a tab, a double colon or the last single colon, or a space. But
2653 if enclosed in double quotes we do not break on enclosed spaces */
2657 && ((p
[1] == ':') || (strchr (p
+ 1, ':') == NULL
)))
2658 || ((p
[0] == ' ') && !is_quote_enclosed
))
2660 if (p
[0] == '.' && strchr (p
, ':') == NULL
) /* Java qualified method. */
2662 /* Find the *last* '.', since the others are package qualifiers. */
2663 for (p1
= p
; *p1
; p1
++)
2671 while (p
[0] == ' ' || p
[0] == '\t')
2674 /* if the closing double quote was left at the end, remove it */
2675 if (is_quote_enclosed
)
2677 char *closing_quote
= strchr (p
, '"');
2678 if (closing_quote
&& closing_quote
[1] == '\0')
2679 *closing_quote
= '\0';
2682 /* Now that we've safely parsed the first half,
2683 * put back ',' so outer layers can see it
2688 if ((p
[0] == ':' || p
[0] == '.') && !has_parens
)
2693 *argptr
= *argptr
+ 1;
2694 if (p
[0] == '.' || p
[1] == ':')
2696 char *saved_arg2
= *argptr
;
2698 /* First check for "global" namespace specification,
2699 of the form "::foo". If found, skip over the colons
2700 and jump to normal symbol processing */
2701 if ((*argptr
== p
) || (p
[-1] == ' ') || (p
[-1] == '\t'))
2704 /* We have what looks like a class or namespace
2705 scope specification (A::B), possibly with many
2706 levels of namespaces or classes (A::B::C::D).
2708 Some versions of the HP ANSI C++ compiler (as also possibly
2709 other compilers) generate class/function/member names with
2710 embedded double-colons if they are inside namespaces. To
2711 handle this, we loop a few times, considering larger and
2712 larger prefixes of the string as though they were single
2713 symbols. So, if the initially supplied string is
2714 A::B::C::D::foo, we have to look up "A", then "A::B",
2715 then "A::B::C", then "A::B::C::D", and finally
2716 "A::B::C::D::foo" as single, monolithic symbols, because
2717 A, B, C or D may be namespaces.
2719 Note that namespaces can nest only inside other
2720 namespaces, and not inside classes. So we need only
2721 consider *prefixes* of the string; there is no need to look up
2722 "B::C" separately as a symbol in the previous example. */
2724 p2
= p
; /* save for restart */
2727 /* Extract the class name. */
2729 while (p
!= *argptr
&& p
[-1] == ' ')
2731 copy
= (char *) alloca (p
- *argptr
+ 1);
2732 memcpy (copy
, *argptr
, p
- *argptr
);
2733 copy
[p
- *argptr
] = 0;
2735 /* Discard the class name from the arg. */
2736 p
= p1
+ (p1
[0] == ':' ? 2 : 1);
2737 while (*p
== ' ' || *p
== '\t')
2741 sym_class
= lookup_symbol (copy
, 0, STRUCT_NAMESPACE
, 0,
2742 (struct symtab
**) NULL
);
2745 (t
= check_typedef (SYMBOL_TYPE (sym_class
)),
2746 (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2747 || TYPE_CODE (t
) == TYPE_CODE_UNION
)))
2749 /* Arg token is not digits => try it as a function name
2750 Find the next token(everything up to end or next blank). */
2752 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
)
2754 p
= skip_quoted (*argptr
);
2755 *argptr
= *argptr
+ 1;
2760 while (*p
&& *p
!= ' ' && *p
!= '\t' && *p
!= ',' && *p
!= ':')
2764 q = operator_chars (*argptr, &q1);
2768 char *tmp = alloca (q1 - q + 1);
2769 memcpy (tmp, q, q1 - q);
2771 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
2775 printf_filtered ("no mangling for \"%s\"\n", tmp);
2776 cplusplus_hint (saved_arg);
2777 return_to_top_level (RETURN_ERROR);
2779 copy = (char*) alloca (3 + strlen(opname));
2780 sprintf (copy, "__%s", opname);
2786 copy
= (char *) alloca (p
- *argptr
+ 1);
2787 memcpy (copy
, *argptr
, p
- *argptr
);
2788 copy
[p
- *argptr
] = '\0';
2790 && copy
[p
- *argptr
- 1]
2791 && strchr (gdb_completer_quote_characters
,
2792 copy
[p
- *argptr
- 1]) != NULL
)
2793 copy
[p
- *argptr
- 1] = '\0';
2796 /* no line number may be specified */
2797 while (*p
== ' ' || *p
== '\t')
2802 i1
= 0; /* counter for the symbol array */
2803 sym_arr
= (struct symbol
**) alloca (total_number_of_methods (t
)
2804 * sizeof (struct symbol
*));
2806 if (destructor_name_p (copy
, t
))
2808 /* Destructors are a special case. */
2809 int m_index
, f_index
;
2811 if (get_destructor_fn_field (t
, &m_index
, &f_index
))
2813 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (t
, m_index
);
2816 lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f
, f_index
),
2817 NULL
, VAR_NAMESPACE
, (int *) NULL
,
2818 (struct symtab
**) NULL
);
2824 i1
= find_methods (t
, copy
, sym_arr
);
2827 /* There is exactly one field with that name. */
2830 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2832 values
.sals
= (struct symtab_and_line
*)
2833 xmalloc (sizeof (struct symtab_and_line
));
2835 values
.sals
[0] = find_function_start_sal (sym
,
2846 /* There is more than one field with that name
2847 (overloaded). Ask the user which one to use. */
2848 return decode_line_2 (sym_arr
, i1
, funfirstline
, canonical
);
2854 if (OPNAME_PREFIX_P (copy
))
2856 tmp
= (char *) alloca (strlen (copy
+ 3) + 9);
2857 strcpy (tmp
, "operator ");
2858 strcat (tmp
, copy
+ 3);
2865 ("the class `%s' does not have destructor defined\n",
2866 SYMBOL_SOURCE_NAME (sym_class
));
2869 ("the class %s does not have any method named %s\n",
2870 SYMBOL_SOURCE_NAME (sym_class
), tmp
);
2871 cplusplus_hint (saved_arg
);
2872 return_to_top_level (RETURN_ERROR
);
2876 /* Move pointer up to next possible class/namespace token */
2877 p
= p2
+ 1; /* restart with old value +1 */
2878 /* Move pointer ahead to next double-colon */
2879 while (*p
&& (p
[0] != ' ') && (p
[0] != '\t') && (p
[0] != '\''))
2883 temp_end
= find_template_name_end (p
);
2885 error ("malformed template specification in command");
2888 else if ((p
[0] == ':') && (p
[1] == ':'))
2889 break; /* found double-colon */
2895 break; /* out of the while (1) */
2897 p2
= p
; /* save restart for next time around */
2898 *argptr
= saved_arg2
; /* restore argptr */
2901 /* Last chance attempt -- check entire name as a symbol */
2902 /* Use "copy" in preparation for jumping out of this block,
2903 to be consistent with usage following the jump target */
2904 copy
= (char *) alloca (p
- saved_arg2
+ 1);
2905 memcpy (copy
, saved_arg2
, p
- saved_arg2
);
2906 /* Note: if is_quoted should be true, we snuff out quote here anyway */
2907 copy
[p
- saved_arg2
] = '\000';
2908 /* Set argptr to skip over the name */
2909 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2910 /* Look up entire name */
2911 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2912 s
= (struct symtab
*) 0;
2913 /* Prepare to jump: restore the " if (condition)" so outer layers see it */
2914 /* Symbol was found --> jump to normal symbol processing.
2915 Code following "symbol_found" expects "copy" to have the
2916 symbol name, "sym" to have the symbol pointer, "s" to be
2917 a specified file's symtab, and sym_symtab to be the symbol's
2919 /* By jumping there we avoid falling through the FILE:LINE and
2920 FILE:FUNC processing stuff below */
2924 /* Couldn't find any interpretation as classes/namespaces, so give up */
2926 /* The quotes are important if copy is empty. */
2928 ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy
);
2929 cplusplus_hint (saved_arg
);
2930 return_to_top_level (RETURN_ERROR
);
2935 /* Extract the file name. */
2937 while (p
!= *argptr
&& p
[-1] == ' ')
2939 if ((*p
== '"') && is_quote_enclosed
)
2941 copy
= (char *) alloca (p
- *argptr
+ 1);
2942 if ((**argptr
== '"') && is_quote_enclosed
)
2944 memcpy (copy
, *argptr
+ 1, p
- *argptr
- 1);
2945 /* It may have the ending quote right after the file name */
2946 if (copy
[p
- *argptr
- 2] == '"')
2947 copy
[p
- *argptr
- 2] = 0;
2949 copy
[p
- *argptr
- 1] = 0;
2953 memcpy (copy
, *argptr
, p
- *argptr
);
2954 copy
[p
- *argptr
] = 0;
2957 /* Find that file's data. */
2958 s
= lookup_symtab (copy
);
2961 if (!have_full_symbols () && !have_partial_symbols ())
2962 error (no_symtab_msg
);
2963 error ("No source file named %s.", copy
);
2966 /* Discard the file name from the arg. */
2968 while (*p
== ' ' || *p
== '\t')
2973 /* No one really seems to know why this was added. It certainly
2974 breaks the command line, though, whenever the passed
2975 name is of the form ClassName::Method. This bit of code
2976 singles out the class name, and if funfirstline is set (for
2977 example, you are setting a breakpoint at this function),
2978 you get an error. This did not occur with earlier
2979 verions, so I am ifdef'ing this out. 3/29/99 */
2982 /* Check if what we have till now is a symbol name */
2984 /* We may be looking at a template instantiation such
2985 as "foo<int>". Check here whether we know about it,
2986 instead of falling through to the code below which
2987 handles ordinary function names, because that code
2988 doesn't like seeing '<' and '>' in a name -- the
2989 skip_quoted call doesn't go past them. So see if we
2990 can figure it out right now. */
2992 copy
= (char *) alloca (p
- *argptr
+ 1);
2993 memcpy (copy
, *argptr
, p
- *argptr
);
2994 copy
[p
- *argptr
] = '\000';
2995 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2998 /* Yes, we have a symbol; jump to symbol processing */
2999 /* Code after symbol_found expects S, SYM_SYMTAB, SYM,
3000 and COPY to be set correctly */
3001 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
3002 s
= (struct symtab
*) 0;
3005 /* Otherwise fall out from here and go to file/line spec
3010 /* S is specified file's symtab, or 0 if no file specified.
3011 arg no longer contains the file name. */
3013 /* Check whether arg is all digits (and sign) */
3016 if (*q
== '-' || *q
== '+')
3018 while (*q
>= '0' && *q
<= '9')
3021 if (q
!= *argptr
&& (*q
== 0 || *q
== ' ' || *q
== '\t' || *q
== ','))
3023 /* We found a token consisting of all digits -- at least one digit. */
3030 /* We might need a canonical line spec if no file was specified. */
3031 int need_canonical
= (s
== 0) ? 1 : 0;
3033 /* This is where we need to make sure that we have good defaults.
3034 We must guarantee that this section of code is never executed
3035 when we are called with just a function name, since
3036 select_source_symtab calls us with such an argument */
3038 if (s
== 0 && default_symtab
== 0)
3040 select_source_symtab (0);
3041 default_symtab
= current_source_symtab
;
3042 default_line
= current_source_line
;
3045 if (**argptr
== '+')
3046 sign
= plus
, (*argptr
)++;
3047 else if (**argptr
== '-')
3048 sign
= minus
, (*argptr
)++;
3049 val
.line
= atoi (*argptr
);
3056 val
.line
= default_line
+ val
.line
;
3062 val
.line
= default_line
- val
.line
;
3067 break; /* No need to adjust val.line. */
3070 while (*q
== ' ' || *q
== '\t')
3076 /* It is possible that this source file has more than one symtab,
3077 and that the new line number specification has moved us from the
3078 default (in s) to a new one. */
3079 val
.symtab
= find_line_symtab (s
, val
.line
, NULL
, NULL
);
3080 if (val
.symtab
== 0)
3084 values
.sals
= (struct symtab_and_line
*)
3085 xmalloc (sizeof (struct symtab_and_line
));
3086 values
.sals
[0] = val
;
3089 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3093 /* Arg token is not digits => try it as a variable name
3094 Find the next token (everything up to end or next whitespace). */
3096 if (**argptr
== '$') /* May be a convenience variable */
3097 p
= skip_quoted (*argptr
+ (((*argptr
)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */
3100 p
= skip_quoted (*argptr
);
3102 error ("Unmatched single quote.");
3104 else if (has_parens
)
3110 p
= skip_quoted (*argptr
);
3113 if (is_quote_enclosed
&& **argptr
== '"')
3116 copy
= (char *) alloca (p
- *argptr
+ 1);
3117 memcpy (copy
, *argptr
, p
- *argptr
);
3118 copy
[p
- *argptr
] = '\0';
3121 && copy
[0] == copy
[p
- *argptr
- 1]
3122 && strchr (gdb_completer_quote_characters
, copy
[0]) != NULL
)
3124 copy
[p
- *argptr
- 1] = '\0';
3127 while (*p
== ' ' || *p
== '\t')
3131 /* If it starts with $: may be a legitimate variable or routine name
3132 (e.g. HP-UX millicode routines such as $$dyncall), or it may
3133 be history value, or it may be a convenience variable */
3139 int need_canonical
= 0;
3141 p
= (copy
[1] == '$') ? copy
+ 2 : copy
+ 1;
3142 while (*p
>= '0' && *p
<= '9')
3144 if (!*p
) /* reached end of token without hitting non-digit */
3146 /* We have a value history reference */
3147 sscanf ((copy
[1] == '$') ? copy
+ 2 : copy
+ 1, "%d", &index
);
3148 valx
= access_value_history ((copy
[1] == '$') ? -index
: index
);
3149 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3150 error ("History values used in line specs must have integer values.");
3154 /* Not all digits -- may be user variable/function or a
3155 convenience variable */
3157 /* Look up entire name as a symbol first */
3158 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
3159 s
= (struct symtab
*) 0;
3161 /* Symbol was found --> jump to normal symbol processing.
3162 Code following "symbol_found" expects "copy" to have the
3163 symbol name, "sym" to have the symbol pointer, "s" to be
3164 a specified file's symtab, and sym_symtab to be the symbol's
3169 /* If symbol was not found, look in minimal symbol tables */
3170 msymbol
= lookup_minimal_symbol (copy
, 0, 0);
3171 /* Min symbol was found --> jump to minsym processing. */
3173 goto minimal_symbol_found
;
3175 /* Not a user variable or function -- must be convenience variable */
3176 need_canonical
= (s
== 0) ? 1 : 0;
3177 valx
= value_of_internalvar (lookup_internalvar (copy
+ 1));
3178 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3179 error ("Convenience variables used in line specs must have integer values.");
3182 /* Either history value or convenience value from above, in valx */
3183 val
.symtab
= s
? s
: default_symtab
;
3184 val
.line
= value_as_long (valx
);
3187 values
.sals
= (struct symtab_and_line
*) xmalloc (sizeof val
);
3188 values
.sals
[0] = val
;
3192 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3198 /* Look up that token as a variable.
3199 If file specified, use that file's per-file block to start with. */
3201 sym
= lookup_symbol (copy
,
3202 (s
? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
3203 : get_selected_block ()),
3204 VAR_NAMESPACE
, 0, &sym_symtab
);
3206 symbol_found
: /* We also jump here from inside the C++ class/namespace
3207 code on finding a symbol of the form "A::B::C" */
3211 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3213 /* Arg is the name of a function */
3214 values
.sals
= (struct symtab_and_line
*)
3215 xmalloc (sizeof (struct symtab_and_line
));
3216 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
3219 /* Don't use the SYMBOL_LINE; if used at all it points to
3220 the line containing the parameters or thereabouts, not
3221 the first line of code. */
3223 /* We might need a canonical line spec if it is a static
3227 struct blockvector
*bv
= BLOCKVECTOR (sym_symtab
);
3228 struct block
*b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
3229 if (lookup_block_symbol (b
, copy
, VAR_NAMESPACE
) != NULL
)
3230 build_canonical_line_spec (values
.sals
, copy
, canonical
);
3237 error ("\"%s\" is not a function", copy
);
3238 else if (SYMBOL_LINE (sym
) != 0)
3240 /* We know its line number. */
3241 values
.sals
= (struct symtab_and_line
*)
3242 xmalloc (sizeof (struct symtab_and_line
));
3244 memset (&values
.sals
[0], 0, sizeof (values
.sals
[0]));
3245 values
.sals
[0].symtab
= sym_symtab
;
3246 values
.sals
[0].line
= SYMBOL_LINE (sym
);
3250 /* This can happen if it is compiled with a compiler which doesn't
3251 put out line numbers for variables. */
3252 /* FIXME: Shouldn't we just set .line and .symtab to zero
3253 and return? For example, "info line foo" could print
3255 error ("Line number not known for symbol \"%s\"", copy
);
3259 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
3261 minimal_symbol_found
: /* We also jump here from the case for variables
3262 that begin with '$' */
3264 if (msymbol
!= NULL
)
3266 values
.sals
= (struct symtab_and_line
*)
3267 xmalloc (sizeof (struct symtab_and_line
));
3268 values
.sals
[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol
),
3269 (struct sec
*) 0, 0);
3270 values
.sals
[0].section
= SYMBOL_BFD_SECTION (msymbol
);
3273 values
.sals
[0].pc
+= FUNCTION_START_OFFSET
;
3274 values
.sals
[0].pc
= SKIP_PROLOGUE (values
.sals
[0].pc
);
3280 if (!have_full_symbols () &&
3281 !have_partial_symbols () && !have_minimal_symbols ())
3282 error (no_symtab_msg
);
3284 error ("Function \"%s\" not defined.", copy
);
3285 return values
; /* for lint */
3288 struct symtabs_and_lines
3289 decode_line_spec (string
, funfirstline
)
3293 struct symtabs_and_lines sals
;
3295 error ("Empty line specification.");
3296 sals
= decode_line_1 (&string
, funfirstline
,
3297 current_source_symtab
, current_source_line
,
3300 error ("Junk at end of line specification: %s", string
);
3304 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
3305 operate on (ask user if necessary).
3306 If CANONICAL is non-NULL return a corresponding array of mangled names
3307 as canonical line specs there. */
3309 static struct symtabs_and_lines
3310 decode_line_2 (sym_arr
, nelts
, funfirstline
, canonical
)
3311 struct symbol
*sym_arr
[];
3316 struct symtabs_and_lines values
, return_values
;
3321 struct cleanup
*old_chain
;
3322 char **canonical_arr
= (char **) NULL
;
3324 values
.sals
= (struct symtab_and_line
*)
3325 alloca (nelts
* sizeof (struct symtab_and_line
));
3326 return_values
.sals
= (struct symtab_and_line
*)
3327 xmalloc (nelts
* sizeof (struct symtab_and_line
));
3328 old_chain
= make_cleanup (free
, return_values
.sals
);
3332 canonical_arr
= (char **) xmalloc (nelts
* sizeof (char *));
3333 make_cleanup (free
, canonical_arr
);
3334 memset (canonical_arr
, 0, nelts
* sizeof (char *));
3335 *canonical
= canonical_arr
;
3339 printf_unfiltered ("[0] cancel\n[1] all\n");
3342 INIT_SAL (&return_values
.sals
[i
]); /* initialize to zeroes */
3343 INIT_SAL (&values
.sals
[i
]);
3344 if (sym_arr
[i
] && SYMBOL_CLASS (sym_arr
[i
]) == LOC_BLOCK
)
3346 values
.sals
[i
] = find_function_start_sal (sym_arr
[i
], funfirstline
);
3347 printf_unfiltered ("[%d] %s at %s:%d\n",
3349 SYMBOL_SOURCE_NAME (sym_arr
[i
]),
3350 values
.sals
[i
].symtab
->filename
,
3351 values
.sals
[i
].line
);
3354 printf_unfiltered ("?HERE\n");
3358 if ((prompt
= getenv ("PS2")) == NULL
)
3362 args
= command_line_input (prompt
, 0, "overload-choice");
3364 if (args
== 0 || *args
== 0)
3365 error_no_arg ("one or more choice numbers");
3373 while (*arg1
>= '0' && *arg1
<= '9')
3375 if (*arg1
&& *arg1
!= ' ' && *arg1
!= '\t')
3376 error ("Arguments must be choice numbers.");
3381 error ("cancelled");
3386 for (i
= 0; i
< nelts
; i
++)
3388 if (canonical_arr
[i
] == NULL
)
3390 symname
= SYMBOL_NAME (sym_arr
[i
]);
3391 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3395 memcpy (return_values
.sals
, values
.sals
,
3396 (nelts
* sizeof (struct symtab_and_line
)));
3397 return_values
.nelts
= nelts
;
3398 discard_cleanups (old_chain
);
3399 return return_values
;
3402 if (num
>= nelts
+ 2)
3404 printf_unfiltered ("No choice number %d.\n", num
);
3409 if (values
.sals
[num
].pc
)
3413 symname
= SYMBOL_NAME (sym_arr
[num
]);
3414 make_cleanup (free
, symname
);
3415 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3417 return_values
.sals
[i
++] = values
.sals
[num
];
3418 values
.sals
[num
].pc
= 0;
3422 printf_unfiltered ("duplicate request for %d ignored.\n", num
);
3427 while (*args
== ' ' || *args
== '\t')
3430 return_values
.nelts
= i
;
3431 discard_cleanups (old_chain
);
3432 return return_values
;
3436 /* Slave routine for sources_info. Force line breaks at ,'s.
3437 NAME is the name to print and *FIRST is nonzero if this is the first
3438 name printed. Set *FIRST to zero. */
3440 output_source_filename (name
, first
)
3444 /* Table of files printed so far. Since a single source file can
3445 result in several partial symbol tables, we need to avoid printing
3446 it more than once. Note: if some of the psymtabs are read in and
3447 some are not, it gets printed both under "Source files for which
3448 symbols have been read" and "Source files for which symbols will
3449 be read in on demand". I consider this a reasonable way to deal
3450 with the situation. I'm not sure whether this can also happen for
3451 symtabs; it doesn't hurt to check. */
3452 static char **tab
= NULL
;
3453 /* Allocated size of tab in elements.
3454 Start with one 256-byte block (when using GNU malloc.c).
3455 24 is the malloc overhead when range checking is in effect. */
3456 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3457 /* Current size of tab in elements. */
3458 static int tab_cur_size
;
3465 tab
= (char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3469 /* Is NAME in tab? */
3470 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3471 if (STREQ (*p
, name
))
3472 /* Yes; don't print it again. */
3474 /* No; add it to tab. */
3475 if (tab_cur_size
== tab_alloc_size
)
3477 tab_alloc_size
*= 2;
3478 tab
= (char **) xrealloc ((char *) tab
, tab_alloc_size
* sizeof (*tab
));
3480 tab
[tab_cur_size
++] = name
;
3488 printf_filtered (", ");
3492 fputs_filtered (name
, gdb_stdout
);
3496 sources_info (ignore
, from_tty
)
3500 register struct symtab
*s
;
3501 register struct partial_symtab
*ps
;
3502 register struct objfile
*objfile
;
3505 if (!have_full_symbols () && !have_partial_symbols ())
3507 error (no_symtab_msg
);
3510 printf_filtered ("Source files for which symbols have been read in:\n\n");
3513 ALL_SYMTABS (objfile
, s
)
3515 output_source_filename (s
->filename
, &first
);
3517 printf_filtered ("\n\n");
3519 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
3522 ALL_PSYMTABS (objfile
, ps
)
3526 output_source_filename (ps
->filename
, &first
);
3529 printf_filtered ("\n");
3533 file_matches (file
, files
, nfiles
)
3540 if (file
!= NULL
&& nfiles
!= 0)
3542 for (i
= 0; i
< nfiles
; i
++)
3544 if (strcmp (files
[i
], basename (file
)) == 0)
3548 else if (nfiles
== 0)
3553 /* Free any memory associated with a search. */
3555 free_search_symbols (symbols
)
3556 struct symbol_search
*symbols
;
3558 struct symbol_search
*p
;
3559 struct symbol_search
*next
;
3561 for (p
= symbols
; p
!= NULL
; p
= next
)
3569 do_free_search_symbols_cleanup (void *symbols
)
3571 free_search_symbols (symbols
);
3575 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3577 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3581 /* Search the symbol table for matches to the regular expression REGEXP,
3582 returning the results in *MATCHES.
3584 Only symbols of KIND are searched:
3585 FUNCTIONS_NAMESPACE - search all functions
3586 TYPES_NAMESPACE - search all type names
3587 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
3588 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
3589 and constants (enums)
3591 free_search_symbols should be called when *MATCHES is no longer needed.
3594 search_symbols (regexp
, kind
, nfiles
, files
, matches
)
3596 namespace_enum kind
;
3599 struct symbol_search
**matches
;
3602 register struct symtab
*s
;
3603 register struct partial_symtab
*ps
;
3604 register struct blockvector
*bv
;
3605 struct blockvector
*prev_bv
= 0;
3606 register struct block
*b
;
3609 register struct symbol
*sym
;
3610 struct partial_symbol
**psym
;
3611 struct objfile
*objfile
;
3612 struct minimal_symbol
*msymbol
;
3615 static enum minimal_symbol_type types
[]
3617 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3618 static enum minimal_symbol_type types2
[]
3620 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3621 static enum minimal_symbol_type types3
[]
3623 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3624 static enum minimal_symbol_type types4
[]
3626 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3627 enum minimal_symbol_type ourtype
;
3628 enum minimal_symbol_type ourtype2
;
3629 enum minimal_symbol_type ourtype3
;
3630 enum minimal_symbol_type ourtype4
;
3631 struct symbol_search
*sr
;
3632 struct symbol_search
*psr
;
3633 struct symbol_search
*tail
;
3634 struct cleanup
*old_chain
= NULL
;
3636 if (kind
< LABEL_NAMESPACE
)
3637 error ("must search on specific namespace");
3639 ourtype
= types
[(int) (kind
- LABEL_NAMESPACE
)];
3640 ourtype2
= types2
[(int) (kind
- LABEL_NAMESPACE
)];
3641 ourtype3
= types3
[(int) (kind
- LABEL_NAMESPACE
)];
3642 ourtype4
= types4
[(int) (kind
- LABEL_NAMESPACE
)];
3644 sr
= *matches
= NULL
;
3649 /* Make sure spacing is right for C++ operators.
3650 This is just a courtesy to make the matching less sensitive
3651 to how many spaces the user leaves between 'operator'
3652 and <TYPENAME> or <OPERATOR>. */
3654 char *opname
= operator_chars (regexp
, &opend
);
3657 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3658 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3660 /* There should 1 space between 'operator' and 'TYPENAME'. */
3661 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3666 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3667 if (opname
[-1] == ' ')
3670 /* If wrong number of spaces, fix it. */
3673 char *tmp
= (char *) alloca (opend
- opname
+ 10);
3674 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3679 if (0 != (val
= re_comp (regexp
)))
3680 error ("Invalid regexp (%s): %s", val
, regexp
);
3683 /* Search through the partial symtabs *first* for all symbols
3684 matching the regexp. That way we don't have to reproduce all of
3685 the machinery below. */
3687 ALL_PSYMTABS (objfile
, ps
)
3689 struct partial_symbol
**bound
, **gbound
, **sbound
;
3695 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3696 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3699 /* Go through all of the symbols stored in a partial
3700 symtab in one loop. */
3701 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3706 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3708 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3719 /* If it would match (logic taken from loop below)
3720 load the file and go on to the next one */
3721 if (file_matches (ps
->filename
, files
, nfiles
)
3722 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
3723 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3724 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3725 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3726 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3727 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3729 PSYMTAB_TO_SYMTAB (ps
);
3737 /* Here, we search through the minimal symbol tables for functions
3738 and variables that match, and force their symbols to be read.
3739 This is in particular necessary for demangled variable names,
3740 which are no longer put into the partial symbol tables.
3741 The symbol will then be found during the scan of symtabs below.
3743 For functions, find_pc_symtab should succeed if we have debug info
3744 for the function, for variables we have to call lookup_symbol
3745 to determine if the variable has debug info.
3746 If the lookup fails, set found_misc so that we will rescan to print
3747 any matching symbols without debug info.
3750 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
3752 ALL_MSYMBOLS (objfile
, msymbol
)
3754 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3755 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3756 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3757 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3759 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3761 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3763 if (kind
== FUNCTIONS_NAMESPACE
3764 || lookup_symbol (SYMBOL_NAME (msymbol
),
3765 (struct block
*) NULL
,
3767 0, (struct symtab
**) NULL
) == NULL
)
3775 ALL_SYMTABS (objfile
, s
)
3777 bv
= BLOCKVECTOR (s
);
3778 /* Often many files share a blockvector.
3779 Scan each blockvector only once so that
3780 we don't get every symbol many times.
3781 It happens that the first symtab in the list
3782 for any given blockvector is the main file. */
3784 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3786 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3787 /* Skip the sort if this block is always sorted. */
3788 if (!BLOCK_SHOULD_SORT (b
))
3789 sort_block_syms (b
);
3790 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
3793 sym
= BLOCK_SYM (b
, j
);
3794 if (file_matches (s
->filename
, files
, nfiles
)
3795 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
3796 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3797 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3798 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3799 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3800 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3801 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3804 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3808 psr
->msymbol
= NULL
;
3813 old_chain
= make_cleanup_free_search_symbols (sr
);
3824 /* If there are no eyes, avoid all contact. I mean, if there are
3825 no debug symbols, then print directly from the msymbol_vector. */
3827 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
3829 ALL_MSYMBOLS (objfile
, msymbol
)
3831 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3832 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3833 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3834 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3836 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3838 /* Functions: Look up by address. */
3839 if (kind
!= FUNCTIONS_NAMESPACE
||
3840 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3842 /* Variables/Absolutes: Look up by name */
3843 if (lookup_symbol (SYMBOL_NAME (msymbol
),
3844 (struct block
*) NULL
, VAR_NAMESPACE
,
3845 0, (struct symtab
**) NULL
) == NULL
)
3848 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3850 psr
->msymbol
= msymbol
;
3857 old_chain
= make_cleanup_free_search_symbols (sr
);
3871 discard_cleanups (old_chain
);
3874 /* Helper function for symtab_symbol_info, this function uses
3875 the data returned from search_symbols() to print information
3876 regarding the match to gdb_stdout.
3879 print_symbol_info (kind
, s
, sym
, block
, last
)
3880 namespace_enum kind
;
3886 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3888 fputs_filtered ("\nFile ", gdb_stdout
);
3889 fputs_filtered (s
->filename
, gdb_stdout
);
3890 fputs_filtered (":\n", gdb_stdout
);
3893 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3894 printf_filtered ("static ");
3896 /* Typedef that is not a C++ class */
3897 if (kind
== TYPES_NAMESPACE
3898 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3899 c_typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3900 /* variable, func, or typedef-that-is-c++-class */
3901 else if (kind
< TYPES_NAMESPACE
||
3902 (kind
== TYPES_NAMESPACE
&&
3903 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
3905 type_print (SYMBOL_TYPE (sym
),
3906 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3907 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3910 printf_filtered (";\n");
3915 /* Tiemann says: "info methods was never implemented." */
3916 char *demangled_name
;
3917 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
3919 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
3921 if (TYPE_FN_FIELD_STUB (t
, block
))
3922 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
3924 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
3925 DMGL_ANSI
| DMGL_PARAMS
);
3926 if (demangled_name
== NULL
)
3927 fprintf_filtered (stream
, "<badly mangled name %s>",
3928 TYPE_FN_FIELD_PHYSNAME (t
, block
));
3931 fputs_filtered (demangled_name
, stream
);
3932 free (demangled_name
);
3938 /* This help function for symtab_symbol_info() prints information
3939 for non-debugging symbols to gdb_stdout.
3942 print_msymbol_info (msymbol
)
3943 struct minimal_symbol
*msymbol
;
3945 printf_filtered (" %08lx %s\n",
3946 (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol
),
3947 SYMBOL_SOURCE_NAME (msymbol
));
3950 /* This is the guts of the commands "info functions", "info types", and
3951 "info variables". It calls search_symbols to find all matches and then
3952 print_[m]symbol_info to print out some useful information about the
3956 symtab_symbol_info (regexp
, kind
, from_tty
)
3958 namespace_enum kind
;
3961 static char *classnames
[]
3963 {"variable", "function", "type", "method"};
3964 struct symbol_search
*symbols
;
3965 struct symbol_search
*p
;
3966 struct cleanup
*old_chain
;
3967 char *last_filename
= NULL
;
3970 /* must make sure that if we're interrupted, symbols gets freed */
3971 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3972 old_chain
= make_cleanup_free_search_symbols (symbols
);
3974 printf_filtered (regexp
3975 ? "All %ss matching regular expression \"%s\":\n"
3976 : "All defined %ss:\n",
3977 classnames
[(int) (kind
- LABEL_NAMESPACE
- 1)], regexp
);
3979 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3983 if (p
->msymbol
!= NULL
)
3987 printf_filtered ("\nNon-debugging symbols:\n");
3990 print_msymbol_info (p
->msymbol
);
3994 print_symbol_info (kind
,
3999 last_filename
= p
->symtab
->filename
;
4003 do_cleanups (old_chain
);
4007 variables_info (regexp
, from_tty
)
4011 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
4015 functions_info (regexp
, from_tty
)
4019 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
4024 types_info (regexp
, from_tty
)
4028 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
4032 /* Tiemann says: "info methods was never implemented." */
4034 methods_info (regexp
)
4037 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
4041 /* Breakpoint all functions matching regular expression. */
4044 rbreak_command_wrapper (regexp
, from_tty
)
4048 rbreak_command (regexp
, from_tty
);
4052 rbreak_command (regexp
, from_tty
)
4056 struct symbol_search
*ss
;
4057 struct symbol_search
*p
;
4058 struct cleanup
*old_chain
;
4060 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
4061 old_chain
= make_cleanup_free_search_symbols (ss
);
4063 for (p
= ss
; p
!= NULL
; p
= p
->next
)
4065 if (p
->msymbol
== NULL
)
4067 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
4068 + strlen (SYMBOL_NAME (p
->symbol
))
4070 strcpy (string
, p
->symtab
->filename
);
4071 strcat (string
, ":'");
4072 strcat (string
, SYMBOL_NAME (p
->symbol
));
4073 strcat (string
, "'");
4074 break_command (string
, from_tty
);
4075 print_symbol_info (FUNCTIONS_NAMESPACE
,
4079 p
->symtab
->filename
);
4083 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
4084 printf_filtered ("<function, no debug info> %s;\n",
4085 SYMBOL_SOURCE_NAME (p
->msymbol
));
4089 do_cleanups (old_chain
);
4093 /* Return Nonzero if block a is lexically nested within block b,
4094 or if a and b have the same pc range.
4095 Return zero otherwise. */
4098 struct block
*a
, *b
;
4102 return BLOCK_START (a
) >= BLOCK_START (b
)
4103 && BLOCK_END (a
) <= BLOCK_END (b
);
4107 /* Helper routine for make_symbol_completion_list. */
4109 static int return_val_size
;
4110 static int return_val_index
;
4111 static char **return_val
;
4113 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4115 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
4116 /* Put only the mangled name on the list. */ \
4117 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
4118 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
4119 completion_list_add_name \
4120 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
4122 completion_list_add_name \
4123 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
4126 /* Test to see if the symbol specified by SYMNAME (which is already
4127 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4128 characters. If so, add it to the current completion list. */
4131 completion_list_add_name (symname
, sym_text
, sym_text_len
, text
, word
)
4141 /* clip symbols that cannot match */
4143 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
4148 /* Clip any symbol names that we've already considered. (This is a
4149 time optimization) */
4151 for (i
= 0; i
< return_val_index
; ++i
)
4153 if (STREQ (symname
, return_val
[i
]))
4159 /* We have a match for a completion, so add SYMNAME to the current list
4160 of matches. Note that the name is moved to freshly malloc'd space. */
4164 if (word
== sym_text
)
4166 new = xmalloc (strlen (symname
) + 5);
4167 strcpy (new, symname
);
4169 else if (word
> sym_text
)
4171 /* Return some portion of symname. */
4172 new = xmalloc (strlen (symname
) + 5);
4173 strcpy (new, symname
+ (word
- sym_text
));
4177 /* Return some of SYM_TEXT plus symname. */
4178 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4179 strncpy (new, word
, sym_text
- word
);
4180 new[sym_text
- word
] = '\0';
4181 strcat (new, symname
);
4184 /* Recheck for duplicates if we intend to add a modified symbol. */
4185 if (word
!= sym_text
)
4187 for (i
= 0; i
< return_val_index
; ++i
)
4189 if (STREQ (new, return_val
[i
]))
4197 if (return_val_index
+ 3 > return_val_size
)
4199 newsize
= (return_val_size
*= 2) * sizeof (char *);
4200 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
4202 return_val
[return_val_index
++] = new;
4203 return_val
[return_val_index
] = NULL
;
4207 /* Return a NULL terminated array of all symbols (regardless of class) which
4208 begin by matching TEXT. If the answer is no symbols, then the return value
4209 is an array which contains only a NULL pointer.
4211 Problem: All of the symbols have to be copied because readline frees them.
4212 I'm not going to worry about this; hopefully there won't be that many. */
4215 make_symbol_completion_list (text
, word
)
4219 register struct symbol
*sym
;
4220 register struct symtab
*s
;
4221 register struct partial_symtab
*ps
;
4222 register struct minimal_symbol
*msymbol
;
4223 register struct objfile
*objfile
;
4224 register struct block
*b
, *surrounding_static_block
= 0;
4226 struct partial_symbol
**psym
;
4227 /* The symbol we are completing on. Points in same buffer as text. */
4229 /* Length of sym_text. */
4232 /* Now look for the symbol we are supposed to complete on.
4233 FIXME: This should be language-specific. */
4237 char *quote_pos
= NULL
;
4239 /* First see if this is a quoted string. */
4241 for (p
= text
; *p
!= '\0'; ++p
)
4243 if (quote_found
!= '\0')
4245 if (*p
== quote_found
)
4246 /* Found close quote. */
4248 else if (*p
== '\\' && p
[1] == quote_found
)
4249 /* A backslash followed by the quote character
4250 doesn't end the string. */
4253 else if (*p
== '\'' || *p
== '"')
4259 if (quote_found
== '\'')
4260 /* A string within single quotes can be a symbol, so complete on it. */
4261 sym_text
= quote_pos
+ 1;
4262 else if (quote_found
== '"')
4263 /* A double-quoted string is never a symbol, nor does it make sense
4264 to complete it any other way. */
4268 /* It is not a quoted string. Break it based on the characters
4269 which are in symbols. */
4272 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4281 sym_text_len
= strlen (sym_text
);
4283 return_val_size
= 100;
4284 return_val_index
= 0;
4285 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4286 return_val
[0] = NULL
;
4288 /* Look through the partial symtabs for all symbols which begin
4289 by matching SYM_TEXT. Add each one that you find to the list. */
4291 ALL_PSYMTABS (objfile
, ps
)
4293 /* If the psymtab's been read in we'll get it when we search
4294 through the blockvector. */
4298 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4299 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4300 + ps
->n_global_syms
);
4303 /* If interrupted, then quit. */
4305 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4308 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4309 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4310 + ps
->n_static_syms
);
4314 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4318 /* At this point scan through the misc symbol vectors and add each
4319 symbol you find to the list. Eventually we want to ignore
4320 anything that isn't a text symbol (everything else will be
4321 handled by the psymtab code above). */
4323 ALL_MSYMBOLS (objfile
, msymbol
)
4326 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4329 /* Search upwards from currently selected frame (so that we can
4330 complete on local vars. */
4332 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4334 if (!BLOCK_SUPERBLOCK (b
))
4336 surrounding_static_block
= b
; /* For elmin of dups */
4339 /* Also catch fields of types defined in this places which match our
4340 text string. Only complete on types visible from current context. */
4342 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4344 sym
= BLOCK_SYM (b
, i
);
4345 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4346 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4348 struct type
*t
= SYMBOL_TYPE (sym
);
4349 enum type_code c
= TYPE_CODE (t
);
4351 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4353 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4355 if (TYPE_FIELD_NAME (t
, j
))
4357 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4358 sym_text
, sym_text_len
, text
, word
);
4366 /* Go through the symtabs and check the externs and statics for
4367 symbols which match. */
4369 ALL_SYMTABS (objfile
, s
)
4372 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4373 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4375 sym
= BLOCK_SYM (b
, i
);
4376 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4380 ALL_SYMTABS (objfile
, s
)
4383 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4384 /* Don't do this block twice. */
4385 if (b
== surrounding_static_block
)
4387 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4389 sym
= BLOCK_SYM (b
, i
);
4390 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4394 return (return_val
);
4397 /* Determine if PC is in the prologue of a function. The prologue is the area
4398 between the first instruction of a function, and the first executable line.
4399 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4401 If non-zero, func_start is where we think the prologue starts, possibly
4402 by previous examination of symbol table information.
4406 in_prologue (pc
, func_start
)
4408 CORE_ADDR func_start
;
4410 struct symtab_and_line sal
;
4411 CORE_ADDR func_addr
, func_end
;
4413 /* We have several sources of information we can consult to figure
4415 - Compilers usually emit line number info that marks the prologue
4416 as its own "source line". So the ending address of that "line"
4417 is the end of the prologue. If available, this is the most
4419 - The minimal symbols and partial symbols, which can usually tell
4420 us the starting and ending addresses of a function.
4421 - If we know the function's start address, we can call the
4422 architecture-defined SKIP_PROLOGUE function to analyze the
4423 instruction stream and guess where the prologue ends.
4424 - Our `func_start' argument; if non-zero, this is the caller's
4425 best guess as to the function's entry point. At the time of
4426 this writing, handle_inferior_event doesn't get this right, so
4427 it should be our last resort. */
4429 /* Consult the partial symbol table, to find which function
4431 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4433 CORE_ADDR prologue_end
;
4435 /* We don't even have minsym information, so fall back to using
4436 func_start, if given. */
4438 return 1; /* We *might* be in a prologue. */
4440 prologue_end
= SKIP_PROLOGUE (func_start
);
4442 return func_start
<= pc
&& pc
< prologue_end
;
4445 /* If we have line number information for the function, that's
4446 usually pretty reliable. */
4447 sal
= find_pc_line (func_addr
, 0);
4449 /* Now sal describes the source line at the function's entry point,
4450 which (by convention) is the prologue. The end of that "line",
4451 sal.end, is the end of the prologue.
4453 Note that, for functions whose source code is all on a single
4454 line, the line number information doesn't always end up this way.
4455 So we must verify that our purported end-of-prologue address is
4456 *within* the function, not at its start or end. */
4458 || sal
.end
<= func_addr
4459 || func_end
<= sal
.end
)
4461 /* We don't have any good line number info, so use the minsym
4462 information, together with the architecture-specific prologue
4464 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
4466 return func_addr
<= pc
&& pc
< prologue_end
;
4469 /* We have line number info, and it looks good. */
4470 return func_addr
<= pc
&& pc
< sal
.end
;
4474 /* Begin overload resolution functions */
4475 /* Helper routine for make_symbol_completion_list. */
4477 static int sym_return_val_size
;
4478 static int sym_return_val_index
;
4479 static struct symbol
**sym_return_val
;
4481 /* Test to see if the symbol specified by SYMNAME (which is already
4482 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4483 characters. If so, add it to the current completion list. */
4486 overload_list_add_symbol (sym
, oload_name
)
4493 /* Get the demangled name without parameters */
4494 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
4497 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
4498 strcpy (sym_name
, SYMBOL_NAME (sym
));
4501 /* skip symbols that cannot match */
4502 if (strcmp (sym_name
, oload_name
) != 0)
4508 /* If there is no type information, we can't do anything, so skip */
4509 if (SYMBOL_TYPE (sym
) == NULL
)
4512 /* skip any symbols that we've already considered. */
4513 for (i
= 0; i
< sym_return_val_index
; ++i
)
4514 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
4517 /* We have a match for an overload instance, so add SYM to the current list
4518 * of overload instances */
4519 if (sym_return_val_index
+ 3 > sym_return_val_size
)
4521 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
4522 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
4524 sym_return_val
[sym_return_val_index
++] = sym
;
4525 sym_return_val
[sym_return_val_index
] = NULL
;
4530 /* Return a null-terminated list of pointers to function symbols that
4531 * match name of the supplied symbol FSYM.
4532 * This is used in finding all overloaded instances of a function name.
4533 * This has been modified from make_symbol_completion_list. */
4537 make_symbol_overload_list (fsym
)
4538 struct symbol
*fsym
;
4540 register struct symbol
*sym
;
4541 register struct symtab
*s
;
4542 register struct partial_symtab
*ps
;
4543 register struct objfile
*objfile
;
4544 register struct block
*b
, *surrounding_static_block
= 0;
4546 /* The name we are completing on. */
4547 char *oload_name
= NULL
;
4548 /* Length of name. */
4549 int oload_name_len
= 0;
4551 /* Look for the symbol we are supposed to complete on.
4552 * FIXME: This should be language-specific. */
4554 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
4557 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
4558 strcpy (oload_name
, SYMBOL_NAME (fsym
));
4560 oload_name_len
= strlen (oload_name
);
4562 sym_return_val_size
= 100;
4563 sym_return_val_index
= 0;
4564 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
4565 sym_return_val
[0] = NULL
;
4567 /* Look through the partial symtabs for all symbols which begin
4568 by matching OLOAD_NAME. Make sure we read that symbol table in. */
4570 ALL_PSYMTABS (objfile
, ps
)
4572 struct partial_symbol
**psym
;
4574 /* If the psymtab's been read in we'll get it when we search
4575 through the blockvector. */
4579 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4580 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4581 + ps
->n_global_syms
);
4584 /* If interrupted, then quit. */
4586 /* This will cause the symbol table to be read if it has not yet been */
4587 s
= PSYMTAB_TO_SYMTAB (ps
);
4590 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4591 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4592 + ps
->n_static_syms
);
4596 /* This will cause the symbol table to be read if it has not yet been */
4597 s
= PSYMTAB_TO_SYMTAB (ps
);
4601 /* Search upwards from currently selected frame (so that we can
4602 complete on local vars. */
4604 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4606 if (!BLOCK_SUPERBLOCK (b
))
4608 surrounding_static_block
= b
; /* For elimination of dups */
4611 /* Also catch fields of types defined in this places which match our
4612 text string. Only complete on types visible from current context. */
4614 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4616 sym
= BLOCK_SYM (b
, i
);
4617 overload_list_add_symbol (sym
, oload_name
);
4621 /* Go through the symtabs and check the externs and statics for
4622 symbols which match. */
4624 ALL_SYMTABS (objfile
, s
)
4627 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4628 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4630 sym
= BLOCK_SYM (b
, i
);
4631 overload_list_add_symbol (sym
, oload_name
);
4635 ALL_SYMTABS (objfile
, s
)
4638 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4639 /* Don't do this block twice. */
4640 if (b
== surrounding_static_block
)
4642 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4644 sym
= BLOCK_SYM (b
, i
);
4645 overload_list_add_symbol (sym
, oload_name
);
4651 return (sym_return_val
);
4654 /* End of overload resolution functions */
4658 _initialize_symtab ()
4660 add_info ("variables", variables_info
,
4661 "All global and static variable names, or those matching REGEXP.");
4663 add_com ("whereis", class_info
, variables_info
,
4664 "All global and static variable names, or those matching REGEXP.");
4666 add_info ("functions", functions_info
,
4667 "All function names, or those matching REGEXP.");
4670 /* FIXME: This command has at least the following problems:
4671 1. It prints builtin types (in a very strange and confusing fashion).
4672 2. It doesn't print right, e.g. with
4673 typedef struct foo *FOO
4674 type_print prints "FOO" when we want to make it (in this situation)
4675 print "struct foo *".
4676 I also think "ptype" or "whatis" is more likely to be useful (but if
4677 there is much disagreement "info types" can be fixed). */
4678 add_info ("types", types_info
,
4679 "All type names, or those matching REGEXP.");
4682 add_info ("methods", methods_info
,
4683 "All method names, or those matching REGEXP::REGEXP.\n\
4684 If the class qualifier is omitted, it is assumed to be the current scope.\n\
4685 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4688 add_info ("sources", sources_info
,
4689 "Source files in the program.");
4691 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4692 "Set a breakpoint for all functions matching REGEXP.");
4696 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4697 add_com ("lg", class_info
, variables_info
,
4698 "All global and static variable names, or those matching REGEXP.");
4701 /* Initialize the one built-in type that isn't language dependent... */
4702 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4703 "<unknown type>", (struct objfile
*) NULL
);