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, Boston, MA 02111-1307, USA. */
31 #include "call-cmds.h"
32 #include "gnu-regex.h"
33 #include "expression.h"
40 #include <sys/types.h>
42 #include "gdb_string.h"
46 /* Prototype for one function in parser-defs.h,
47 instead of including that entire file. */
49 extern char * find_template_name_end
PARAMS ((char *));
51 /* Prototypes for local functions */
53 static int find_methods
PARAMS ((struct type
*, char *, struct symbol
**));
55 static void completion_list_add_name
PARAMS ((char *, char *, int, char *,
58 static void build_canonical_line_spec
PARAMS ((struct symtab_and_line
*,
61 static struct symtabs_and_lines decode_line_2
PARAMS ((struct symbol
*[],
64 static void rbreak_command
PARAMS ((char *, int));
66 static void types_info
PARAMS ((char *, int));
68 static void functions_info
PARAMS ((char *, int));
70 static void variables_info
PARAMS ((char *, int));
72 static void sources_info
PARAMS ((char *, int));
74 static void output_source_filename
PARAMS ((char *, int *));
76 char *operator_chars
PARAMS ((char *, char **));
78 static int find_line_common
PARAMS ((struct linetable
*, int, int *));
80 static struct partial_symbol
*lookup_partial_symbol PARAMS
81 ((struct partial_symtab
*, const char *,
82 int, namespace_enum
));
84 static struct partial_symbol
*fixup_psymbol_section
PARAMS ((struct
85 partial_symbol
*, struct objfile
*));
87 static struct symtab
*lookup_symtab_1
PARAMS ((char *));
89 static void cplusplus_hint
PARAMS ((char *));
91 static struct symbol
*find_active_alias
PARAMS ((struct symbol
*sym
,
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
PARAMS ((struct general_symbol_info
*,
101 static int file_matches
PARAMS ((char *, char **, int));
103 static void print_symbol_info
PARAMS ((namespace_enum
,
104 struct symtab
*, struct symbol
*,
107 static void print_msymbol_info
PARAMS ((struct minimal_symbol
*));
109 static void symtab_symbol_info
PARAMS ((char *, namespace_enum
, int));
111 static void overload_list_add_symbol
PARAMS ((struct symbol
*sym
,
114 void _initialize_symtab
PARAMS ((void));
118 /* The single non-language-specific builtin type */
119 struct type
*builtin_type_error
;
121 /* Block in which the most recently searched-for symbol was found.
122 Might be better to make this a parameter to lookup_symbol and
125 const struct block
*block_found
;
127 char no_symtab_msg
[] = "No symbol table is loaded. Use the \"file\" command.";
129 /* While the C++ support is still in flux, issue a possibly helpful hint on
130 using the new command completion feature on single quoted demangled C++
131 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
134 cplusplus_hint (name
)
137 while (*name
== '\'')
139 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name
, name
);
140 printf_filtered ("(Note leading single quote.)\n");
143 /* Check for a symtab of a specific name; first in symtabs, then in
144 psymtabs. *If* there is no '/' in the name, a match after a '/'
145 in the symtab filename will also work. */
147 static struct symtab
*
148 lookup_symtab_1 (name
)
151 register struct symtab
*s
;
152 register struct partial_symtab
*ps
;
153 register char *slash
;
154 register struct objfile
*objfile
;
158 /* First, search for an exact match */
160 ALL_SYMTABS (objfile
, s
)
161 if (STREQ (name
, s
->filename
))
164 slash
= strchr (name
, '/');
166 /* Now, search for a matching tail (only if name doesn't have any dirs) */
169 ALL_SYMTABS (objfile
, s
)
171 char *p
= s
-> filename
;
172 char *tail
= strrchr (p
, '/');
181 /* Same search rules as above apply here, but now we look thru the
184 ps
= lookup_partial_symtab (name
);
189 error ("Internal: readin %s pst for `%s' found when no symtab found.",
190 ps
-> filename
, name
);
192 s
= PSYMTAB_TO_SYMTAB (ps
);
197 /* At this point, we have located the psymtab for this file, but
198 the conversion to a symtab has failed. This usually happens
199 when we are looking up an include file. In this case,
200 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
201 been created. So, we need to run through the symtabs again in
202 order to find the file.
203 XXX - This is a crock, and should be fixed inside of the the
204 symbol parsing routines. */
208 /* Lookup the symbol table of a source file named NAME. Try a couple
209 of variations if the first lookup doesn't work. */
215 register struct symtab
*s
;
220 s
= lookup_symtab_1 (name
);
224 /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
227 /* If name not found as specified, see if adding ".c" helps. */
228 /* Why is this? Is it just a user convenience? (If so, it's pretty
229 questionable in the presence of C++, FORTRAN, etc.). It's not in
232 copy
= (char *) alloca (strlen (name
) + 3);
235 s
= lookup_symtab_1 (copy
);
239 /* We didn't find anything; die. */
243 /* Lookup the partial symbol table of a source file named NAME.
244 *If* there is no '/' in the name, a match after a '/'
245 in the psymtab filename will also work. */
247 struct partial_symtab
*
248 lookup_partial_symtab (name
)
251 register struct partial_symtab
*pst
;
252 register struct objfile
*objfile
;
254 ALL_PSYMTABS (objfile
, pst
)
256 if (STREQ (name
, pst
-> filename
))
262 /* Now, search for a matching tail (only if name doesn't have any dirs) */
264 if (!strchr (name
, '/'))
265 ALL_PSYMTABS (objfile
, pst
)
267 char *p
= pst
-> filename
;
268 char *tail
= strrchr (p
, '/');
280 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
281 full method name, which consist of the class name (from T), the unadorned
282 method name from METHOD_ID, and the signature for the specific overload,
283 specified by SIGNATURE_ID. Note that this function is g++ specific. */
286 gdb_mangle_name (type
, method_id
, signature_id
)
288 int method_id
, signature_id
;
290 int mangled_name_len
;
292 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
293 struct fn_field
*method
= &f
[signature_id
];
294 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
295 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
296 char *newname
= type_name_no_tag (type
);
298 /* Does the form of physname indicate that it is the full mangled name
299 of a constructor (not just the args)? */
300 int is_full_physname_constructor
;
303 int is_destructor
= DESTRUCTOR_PREFIX_P (physname
);
304 /* Need a new type prefix. */
305 char *const_prefix
= method
->is_const
? "C" : "";
306 char *volatile_prefix
= method
->is_volatile
? "V" : "";
308 int len
= (newname
== NULL
? 0 : strlen (newname
));
310 is_full_physname_constructor
=
311 ((physname
[0]=='_' && physname
[1]=='_' &&
312 (isdigit(physname
[2]) || physname
[2]=='Q' || physname
[2]=='t'))
313 || (strncmp(physname
, "__ct", 4) == 0));
316 is_full_physname_constructor
|| (newname
&& STREQ(field_name
, newname
));
319 is_destructor
= (strncmp(physname
, "__dt", 4) == 0);
321 if (is_destructor
|| is_full_physname_constructor
)
323 mangled_name
= (char*) xmalloc(strlen(physname
)+1);
324 strcpy(mangled_name
, physname
);
330 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
332 else if (physname
[0] == 't' || physname
[0] == 'Q')
334 /* The physname for template and qualified methods already includes
336 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
342 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
344 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
349 /* Only needed for GNU-mangled names. ANSI-mangled names
350 work with the normal mechanisms. */
351 if (OPNAME_PREFIX_P (field_name
))
353 const char *opname
= cplus_mangle_opname (field_name
+ 3, 0);
355 error ("No mangling for \"%s\"", field_name
);
356 mangled_name_len
+= strlen (opname
);
357 mangled_name
= (char *)xmalloc (mangled_name_len
);
359 strncpy (mangled_name
, field_name
, 3);
360 mangled_name
[3] = '\0';
361 strcat (mangled_name
, opname
);
365 mangled_name
= (char *)xmalloc (mangled_name_len
);
367 mangled_name
[0] = '\0';
369 strcpy (mangled_name
, field_name
);
371 strcat (mangled_name
, buf
);
372 /* If the class doesn't have a name, i.e. newname NULL, then we just
373 mangle it using 0 for the length of the class. Thus it gets mangled
374 as something starting with `::' rather than `classname::'. */
376 strcat (mangled_name
, newname
);
378 strcat (mangled_name
, physname
);
379 return (mangled_name
);
384 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
386 struct partial_symtab
*
387 find_pc_sect_psymtab (pc
, section
)
391 register struct partial_symtab
*pst
;
392 register struct objfile
*objfile
;
394 ALL_PSYMTABS (objfile
, pst
)
396 #if defined(HPUXHPPA)
397 if (pc
>= pst
->textlow
&& pc
<= pst
->texthigh
)
399 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
402 struct minimal_symbol
*msymbol
;
403 struct partial_symtab
*tpst
;
405 /* An objfile that has its functions reordered might have
406 many partial symbol tables containing the PC, but
407 we want the partial symbol table that contains the
408 function containing the PC. */
409 if (!(objfile
->flags
& OBJF_REORDERED
) &&
410 section
== 0) /* can't validate section this way */
413 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
417 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
419 #if defined(HPUXHPPA)
420 if (pc
>= tpst
->textlow
&& pc
<= tpst
->texthigh
)
422 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
425 struct partial_symbol
*p
;
427 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
429 && SYMBOL_VALUE_ADDRESS(p
)
430 == SYMBOL_VALUE_ADDRESS (msymbol
))
440 /* Find which partial symtab contains PC. Return 0 if none.
441 Backward compatibility, no section */
443 struct partial_symtab
*
447 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
450 /* Find which partial symbol within a psymtab matches PC and SECTION.
451 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
453 struct partial_symbol
*
454 find_pc_sect_psymbol (psymtab
, pc
, section
)
455 struct partial_symtab
*psymtab
;
459 struct partial_symbol
*best
= NULL
, *p
, **pp
;
463 psymtab
= find_pc_sect_psymtab (pc
, section
);
467 /* Cope with programs that start at address 0 */
468 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
470 /* Search the global symbols as well as the static symbols, so that
471 find_pc_partial_function doesn't use a minimal symbol and thus
472 cache a bad endaddr. */
473 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
474 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
475 < psymtab
->n_global_syms
);
479 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
480 && SYMBOL_CLASS (p
) == LOC_BLOCK
481 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
482 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
483 || (psymtab
->textlow
== 0
484 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
486 if (section
) /* match on a specific section */
488 fixup_psymbol_section (p
, psymtab
->objfile
);
489 if (SYMBOL_BFD_SECTION (p
) != section
)
492 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
497 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
498 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
499 < psymtab
->n_static_syms
);
503 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
504 && SYMBOL_CLASS (p
) == LOC_BLOCK
505 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
506 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
507 || (psymtab
->textlow
== 0
508 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
510 if (section
) /* match on a specific section */
512 fixup_psymbol_section (p
, psymtab
->objfile
);
513 if (SYMBOL_BFD_SECTION (p
) != section
)
516 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
524 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
525 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
527 struct partial_symbol
*
528 find_pc_psymbol (psymtab
, pc
)
529 struct partial_symtab
*psymtab
;
532 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
535 /* Debug symbols usually don't have section information. We need to dig that
536 out of the minimal symbols and stash that in the debug symbol. */
539 fixup_section (ginfo
, objfile
)
540 struct general_symbol_info
*ginfo
;
541 struct objfile
*objfile
;
543 struct minimal_symbol
*msym
;
544 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
547 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
551 fixup_symbol_section (sym
, objfile
)
553 struct objfile
*objfile
;
558 if (SYMBOL_BFD_SECTION (sym
))
561 fixup_section (&sym
->ginfo
, objfile
);
566 static struct partial_symbol
*
567 fixup_psymbol_section (psym
, objfile
)
568 struct partial_symbol
*psym
;
569 struct objfile
*objfile
;
574 if (SYMBOL_BFD_SECTION (psym
))
577 fixup_section (&psym
->ginfo
, objfile
);
582 /* Find the definition for a specified symbol name NAME
583 in namespace NAMESPACE, visible from lexical block BLOCK.
584 Returns the struct symbol pointer, or zero if no symbol is found.
585 If SYMTAB is non-NULL, store the symbol table in which the
586 symbol was found there, or NULL if not found.
587 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
588 NAME is a field of the current implied argument `this'. If so set
589 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
590 BLOCK_FOUND is set to the block in which NAME is found (in the case of
591 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
593 /* This function has a bunch of loops in it and it would seem to be
594 attractive to put in some QUIT's (though I'm not really sure
595 whether it can run long enough to be really important). But there
596 are a few calls for which it would appear to be bad news to quit
597 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
598 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
599 code below which can error(), but that probably doesn't affect
600 these calls since they are looking for a known variable and thus
601 can probably assume it will never hit the C++ code). */
604 lookup_symbol (name
, block
, namespace, is_a_field_of_this
, symtab
)
606 register const struct block
*block
;
607 const namespace_enum
namespace;
608 int *is_a_field_of_this
;
609 struct symtab
**symtab
;
611 register struct symbol
*sym
;
612 register struct symtab
*s
= NULL
;
613 register struct partial_symtab
*ps
;
614 struct blockvector
*bv
;
615 register struct objfile
*objfile
= NULL
;
616 register struct block
*b
;
617 register struct minimal_symbol
*msymbol
;
619 /* Search specified block and its superiors. */
623 sym
= lookup_block_symbol (block
, name
, namespace);
629 /* Search the list of symtabs for one which contains the
630 address of the start of this block. */
631 ALL_SYMTABS (objfile
, s
)
633 bv
= BLOCKVECTOR (s
);
634 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
635 if (BLOCK_START (b
) <= BLOCK_START (block
)
636 && BLOCK_END (b
) > BLOCK_START (block
))
643 return fixup_symbol_section (sym
, objfile
);
645 block
= BLOCK_SUPERBLOCK (block
);
648 /* FIXME: this code is never executed--block is always NULL at this
649 point. What is it trying to do, anyway? We already should have
650 checked the STATIC_BLOCK above (it is the superblock of top-level
651 blocks). Why is VAR_NAMESPACE special-cased? */
652 /* Don't need to mess with the psymtabs; if we have a block,
653 that file is read in. If we don't, then we deal later with
654 all the psymtab stuff that needs checking. */
655 /* Note (RT): The following never-executed code looks unnecessary to me also.
656 * If we change the code to use the original (passed-in)
657 * value of 'block', we could cause it to execute, but then what
658 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
659 * 'block' was already searched by the above code. And the STATIC_BLOCK's
660 * of *other* symtabs (those files not containing 'block' lexically)
661 * should not contain 'block' address-wise. So we wouldn't expect this
662 * code to find any 'sym''s that were not found above. I vote for
663 * deleting the following paragraph of code.
665 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
668 /* Find the right symtab. */
669 ALL_SYMTABS (objfile
, s
)
671 bv
= BLOCKVECTOR (s
);
672 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
673 if (BLOCK_START (b
) <= BLOCK_START (block
)
674 && BLOCK_END (b
) > BLOCK_START (block
))
676 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
682 return fixup_symbol_section (sym
, objfile
);
689 /* C++: If requested to do so by the caller,
690 check to see if NAME is a field of `this'. */
691 if (is_a_field_of_this
)
693 struct value
*v
= value_of_this (0);
695 *is_a_field_of_this
= 0;
696 if (v
&& check_field (v
, name
))
698 *is_a_field_of_this
= 1;
705 /* Now search all global blocks. Do the symtab's first, then
706 check the psymtab's. If a psymtab indicates the existence
707 of the desired name as a global, then do psymtab-to-symtab
708 conversion on the fly and return the found symbol. */
710 ALL_SYMTABS (objfile
, s
)
712 bv
= BLOCKVECTOR (s
);
713 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
714 sym
= lookup_block_symbol (block
, name
, namespace);
720 return fixup_symbol_section (sym
, objfile
);
726 /* Check for the possibility of the symbol being a function or
727 a mangled variable that is stored in one of the minimal symbol tables.
728 Eventually, all global symbols might be resolved in this way. */
730 if (namespace == VAR_NAMESPACE
)
732 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
735 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
736 SYMBOL_BFD_SECTION (msymbol
));
739 /* This is a function which has a symtab for its address. */
740 bv
= BLOCKVECTOR (s
);
741 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
742 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
744 /* We kept static functions in minimal symbol table as well as
745 in static scope. We want to find them in the symbol table. */
747 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
748 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
752 /* sym == 0 if symbol was found in the minimal symbol table
753 but not in the symtab.
754 Return 0 to use the msymbol definition of "foo_".
756 This happens for Fortran "foo_" symbols,
757 which are "foo" in the symtab.
759 This can also happen if "asm" is used to make a
760 regular symbol but not a debugging symbol, e.g.
767 return fixup_symbol_section (sym
, objfile
);
769 else if (MSYMBOL_TYPE (msymbol
) != mst_text
770 && MSYMBOL_TYPE (msymbol
) != mst_file_text
771 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
773 /* This is a mangled variable, look it up by its
775 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
776 namespace, is_a_field_of_this
, symtab
);
778 /* There are no debug symbols for this file, or we are looking
779 for an unmangled variable.
780 Try to find a matching static symbol below. */
786 ALL_PSYMTABS (objfile
, ps
)
788 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
790 s
= PSYMTAB_TO_SYMTAB(ps
);
791 bv
= BLOCKVECTOR (s
);
792 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
793 sym
= lookup_block_symbol (block
, name
, namespace);
796 /* This shouldn't be necessary, but as a last resort
797 * try looking in the statics even though the psymtab
798 * claimed the symbol was global. It's possible that
799 * the psymtab gets it wrong in some cases.
801 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
802 sym
= lookup_block_symbol (block
, name
, namespace);
804 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
805 %s may be an inlined function, or may be a template function\n\
806 (if a template, try specifying an instantiation: %s<type>).",
807 name
, ps
->filename
, name
, name
);
811 return fixup_symbol_section (sym
, objfile
);
815 /* Now search all static file-level symbols.
816 Not strictly correct, but more useful than an error.
817 Do the symtabs first, then check the psymtabs.
818 If a psymtab indicates the existence
819 of the desired name as a file-level static, then do psymtab-to-symtab
820 conversion on the fly and return the found symbol. */
822 ALL_SYMTABS (objfile
, s
)
824 bv
= BLOCKVECTOR (s
);
825 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
826 sym
= lookup_block_symbol (block
, name
, namespace);
832 return fixup_symbol_section (sym
, objfile
);
836 ALL_PSYMTABS (objfile
, ps
)
838 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
840 s
= PSYMTAB_TO_SYMTAB(ps
);
841 bv
= BLOCKVECTOR (s
);
842 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
843 sym
= lookup_block_symbol (block
, name
, namespace);
846 /* This shouldn't be necessary, but as a last resort
847 * try looking in the globals even though the psymtab
848 * claimed the symbol was static. It's possible that
849 * the psymtab gets it wrong in some cases.
851 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
852 sym
= lookup_block_symbol (block
, name
, namespace);
854 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
855 %s may be an inlined function, or may be a template function\n\
856 (if a template, try specifying an instantiation: %s<type>).",
857 name
, ps
->filename
, name
, name
);
861 return fixup_symbol_section (sym
, objfile
);
867 /* Check for the possibility of the symbol being a function or
868 a global variable that is stored in one of the minimal symbol tables.
869 The "minimal symbol table" is built from linker-supplied info.
871 RT: I moved this check to last, after the complete search of
872 the global (p)symtab's and static (p)symtab's. For HP-generated
873 symbol tables, this check was causing a premature exit from
874 lookup_symbol with NULL return, and thus messing up symbol lookups
875 of things like "c::f". It seems to me a check of the minimal
876 symbol table ought to be a last resort in any case. I'm vaguely
877 worried about the comment below which talks about FORTRAN routines "foo_"
878 though... is it saying we need to do the "minsym" check before
879 the static check in this case?
882 if (namespace == VAR_NAMESPACE
)
884 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
887 /* OK, we found a minimal symbol in spite of not
888 * finding any symbol. There are various possible
889 * explanations for this. One possibility is the symbol
890 * exists in code not compiled -g. Another possibility
891 * is that the 'psymtab' isn't doing its job.
892 * A third possibility, related to #2, is that we were confused
893 * by name-mangling. For instance, maybe the psymtab isn't
894 * doing its job because it only know about demangled
895 * names, but we were given a mangled name...
898 /* We first use the address in the msymbol to try to
899 * locate the appropriate symtab. Note that find_pc_symtab()
900 * has a side-effect of doing psymtab-to-symtab expansion,
901 * for the found symtab.
903 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
906 bv
= BLOCKVECTOR (s
);
907 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
908 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
910 /* We kept static functions in minimal symbol table as well as
911 in static scope. We want to find them in the symbol table. */
914 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
915 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
918 /* If we found one, return it */
925 /* If we get here with sym == 0, the symbol was
926 found in the minimal symbol table
927 but not in the symtab.
928 Fall through and return 0 to use the msymbol
929 definition of "foo_".
930 (Note that outer code generally follows up a call
931 to this routine with a call to lookup_minimal_symbol(),
932 so a 0 return means we'll just flow into that other routine).
934 This happens for Fortran "foo_" symbols,
935 which are "foo" in the symtab.
937 This can also happen if "asm" is used to make a
938 regular symbol but not a debugging symbol, e.g.
944 /* If the lookup-by-address fails, try repeating the
945 * entire lookup process with the symbol name from
946 * the msymbol (if different from the original symbol name).
948 else if (MSYMBOL_TYPE (msymbol
) != mst_text
949 && MSYMBOL_TYPE (msymbol
) != mst_file_text
950 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
952 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
953 namespace, is_a_field_of_this
, symtab
);
965 /* Look, in partial_symtab PST, for symbol NAME. Check the global
966 symbols if GLOBAL, the static symbols if not */
968 static struct partial_symbol
*
969 lookup_partial_symbol (pst
, name
, global
, namespace)
970 struct partial_symtab
*pst
;
973 namespace_enum
namespace;
975 struct partial_symbol
**start
, **psym
;
976 struct partial_symbol
**top
, **bottom
, **center
;
977 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
978 int do_linear_search
= 1;
986 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
987 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
989 if (global
) /* This means we can use a binary search. */
991 do_linear_search
= 0;
993 /* Binary search. This search is guaranteed to end with center
994 pointing at the earliest partial symbol with the correct
995 name. At that point *all* partial symbols with that name
996 will be checked against the correct namespace. */
999 top
= start
+ length
- 1;
1000 while (top
> bottom
)
1002 center
= bottom
+ (top
- bottom
) / 2;
1003 if (!(center
< top
))
1005 if (!do_linear_search
1006 && (SYMBOL_LANGUAGE (*center
) == language_cplus
1007 || SYMBOL_LANGUAGE (*center
) == language_java
1010 do_linear_search
= 1;
1012 if (STRCMP (SYMBOL_NAME (*center
), name
) >= 0)
1018 bottom
= center
+ 1;
1021 if (!(top
== bottom
))
1023 while (STREQ (SYMBOL_NAME (*top
), name
))
1025 if (SYMBOL_NAMESPACE (*top
) == namespace)
1033 /* Can't use a binary search or else we found during the binary search that
1034 we should also do a linear search. */
1036 if (do_linear_search
)
1038 for (psym
= start
; psym
< start
+ length
; psym
++)
1040 if (namespace == SYMBOL_NAMESPACE (*psym
))
1042 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1053 /* Look up a type named NAME in the struct_namespace. The type returned
1054 must not be opaque -- i.e., must have at least one field defined
1056 This code was modelled on lookup_symbol -- the parts not relevant to looking
1057 up types were just left out. In particular it's assumed here that types
1058 are available in struct_namespace and only at file-static or global blocks. */
1062 lookup_transparent_type (name
)
1065 register struct symbol
*sym
;
1066 register struct symtab
*s
= NULL
;
1067 register struct partial_symtab
*ps
;
1068 struct blockvector
*bv
;
1069 register struct objfile
*objfile
;
1070 register struct block
*block
;
1071 register struct minimal_symbol
*msymbol
;
1073 /* Now search all the global symbols. Do the symtab's first, then
1074 check the psymtab's. If a psymtab indicates the existence
1075 of the desired name as a global, then do psymtab-to-symtab
1076 conversion on the fly and return the found symbol. */
1078 ALL_SYMTABS (objfile
, s
)
1080 bv
= BLOCKVECTOR (s
);
1081 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1082 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1083 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1085 return SYMBOL_TYPE (sym
);
1089 ALL_PSYMTABS (objfile
, ps
)
1091 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1093 s
= PSYMTAB_TO_SYMTAB(ps
);
1094 bv
= BLOCKVECTOR (s
);
1095 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1096 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1099 /* This shouldn't be necessary, but as a last resort
1100 * try looking in the statics even though the psymtab
1101 * claimed the symbol was global. It's possible that
1102 * the psymtab gets it wrong in some cases.
1104 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1105 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1107 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1108 %s may be an inlined function, or may be a template function\n\
1109 (if a template, try specifying an instantiation: %s<type>).",
1110 name
, ps
->filename
, name
, name
);
1112 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1113 return SYMBOL_TYPE (sym
);
1117 /* Now search the static file-level symbols.
1118 Not strictly correct, but more useful than an error.
1119 Do the symtab's first, then
1120 check the psymtab's. If a psymtab indicates the existence
1121 of the desired name as a file-level static, then do psymtab-to-symtab
1122 conversion on the fly and return the found symbol.
1125 ALL_SYMTABS (objfile
, s
)
1127 bv
= BLOCKVECTOR (s
);
1128 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1129 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1130 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1132 return SYMBOL_TYPE (sym
);
1136 ALL_PSYMTABS (objfile
, ps
)
1138 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1140 s
= PSYMTAB_TO_SYMTAB(ps
);
1141 bv
= BLOCKVECTOR (s
);
1142 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1143 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1146 /* This shouldn't be necessary, but as a last resort
1147 * try looking in the globals even though the psymtab
1148 * claimed the symbol was static. It's possible that
1149 * the psymtab gets it wrong in some cases.
1151 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1152 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1154 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1155 %s may be an inlined function, or may be a template function\n\
1156 (if a template, try specifying an instantiation: %s<type>).",
1157 name
, ps
->filename
, name
, name
);
1159 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1160 return SYMBOL_TYPE (sym
);
1163 return (struct type
*) 0;
1167 /* Find the psymtab containing main(). */
1168 /* FIXME: What about languages without main() or specially linked
1169 executables that have no main() ? */
1171 struct partial_symtab
*
1172 find_main_psymtab ()
1174 register struct partial_symtab
*pst
;
1175 register struct objfile
*objfile
;
1177 ALL_PSYMTABS (objfile
, pst
)
1179 if (lookup_partial_symbol (pst
, "main", 1, VAR_NAMESPACE
))
1187 /* Search BLOCK for symbol NAME in NAMESPACE.
1189 Note that if NAME is the demangled form of a C++ symbol, we will fail
1190 to find a match during the binary search of the non-encoded names, but
1191 for now we don't worry about the slight inefficiency of looking for
1192 a match we'll never find, since it will go pretty quick. Once the
1193 binary search terminates, we drop through and do a straight linear
1194 search on the symbols. Each symbol which is marked as being a C++
1195 symbol (language_cplus set) has both the encoded and non-encoded names
1196 tested for a match. */
1199 lookup_block_symbol (block
, name
, namespace)
1200 register const struct block
*block
;
1202 const namespace_enum
namespace;
1204 register int bot
, top
, inc
;
1205 register struct symbol
*sym
;
1206 register struct symbol
*sym_found
= NULL
;
1207 register int do_linear_search
= 1;
1209 /* If the blocks's symbols were sorted, start with a binary search. */
1211 if (BLOCK_SHOULD_SORT (block
))
1213 /* Reset the linear search flag so if the binary search fails, we
1214 won't do the linear search once unless we find some reason to
1215 do so, such as finding a C++ symbol during the binary search.
1216 Note that for C++ modules, ALL the symbols in a block should
1217 end up marked as C++ symbols. */
1219 do_linear_search
= 0;
1220 top
= BLOCK_NSYMS (block
);
1223 /* Advance BOT to not far before the first symbol whose name is NAME. */
1227 inc
= (top
- bot
+ 1);
1228 /* No need to keep binary searching for the last few bits worth. */
1233 inc
= (inc
>> 1) + bot
;
1234 sym
= BLOCK_SYM (block
, inc
);
1235 if (!do_linear_search
1236 && (SYMBOL_LANGUAGE (sym
) == language_cplus
1237 || SYMBOL_LANGUAGE (sym
) == language_java
1240 do_linear_search
= 1;
1242 if (SYMBOL_NAME (sym
)[0] < name
[0])
1246 else if (SYMBOL_NAME (sym
)[0] > name
[0])
1250 else if (STRCMP (SYMBOL_NAME (sym
), name
) < 0)
1260 /* Now scan forward until we run out of symbols, find one whose
1261 name is greater than NAME, or find one we want. If there is
1262 more than one symbol with the right name and namespace, we
1263 return the first one; I believe it is now impossible for us
1264 to encounter two symbols with the same name and namespace
1265 here, because blocks containing argument symbols are no
1268 top
= BLOCK_NSYMS (block
);
1271 sym
= BLOCK_SYM (block
, bot
);
1272 inc
= SYMBOL_NAME (sym
)[0] - name
[0];
1275 inc
= STRCMP (SYMBOL_NAME (sym
), name
);
1277 if (inc
== 0 && SYMBOL_NAMESPACE (sym
) == namespace)
1289 /* Here if block isn't sorted, or we fail to find a match during the
1290 binary search above. If during the binary search above, we find a
1291 symbol which is a C++ symbol, then we have re-enabled the linear
1292 search flag which was reset when starting the binary search.
1294 This loop is equivalent to the loop above, but hacked greatly for speed.
1296 Note that parameter symbols do not always show up last in the
1297 list; this loop makes sure to take anything else other than
1298 parameter symbols first; it only uses parameter symbols as a
1299 last resort. Note that this only takes up extra computation
1302 if (do_linear_search
)
1304 top
= BLOCK_NSYMS (block
);
1308 sym
= BLOCK_SYM (block
, bot
);
1309 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1310 SYMBOL_MATCHES_NAME (sym
, name
))
1312 /* If SYM has aliases, then use any alias that is active
1313 at the current PC. If no alias is active at the current
1314 PC, then use the main symbol.
1316 ?!? Is checking the current pc correct? Is this routine
1317 ever called to look up a symbol from another context? */
1318 if (SYMBOL_ALIASES (sym
))
1319 sym
= find_active_alias (sym
, read_pc ());
1322 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1323 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1324 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1325 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1326 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1327 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1335 return (sym_found
); /* Will be NULL if not found. */
1338 /* Given a main symbol SYM and ADDR, search through the alias
1339 list to determine if an alias is active at ADDR and return
1342 If no alias is active, then return SYM. */
1344 static struct symbol
*
1345 find_active_alias (sym
, addr
)
1349 struct range_list
*r
;
1350 struct alias_list
*aliases
;
1352 /* If we have aliases, check them first. */
1353 aliases
= SYMBOL_ALIASES (sym
);
1357 if (!SYMBOL_RANGES (aliases
->sym
))
1358 return aliases
->sym
;
1359 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1361 if (r
->start
<= addr
&& r
->end
> addr
)
1362 return aliases
->sym
;
1364 aliases
= aliases
->next
;
1367 /* Nothing found, return the main symbol. */
1372 /* Return the symbol for the function which contains a specified
1373 lexical block, described by a struct block BL. */
1379 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1380 bl
= BLOCK_SUPERBLOCK (bl
);
1382 return BLOCK_FUNCTION (bl
);
1385 /* Find the symtab associated with PC and SECTION. Look through the
1386 psymtabs and read in another symtab if necessary. */
1389 find_pc_sect_symtab (pc
, section
)
1393 register struct block
*b
;
1394 struct blockvector
*bv
;
1395 register struct symtab
*s
= NULL
;
1396 register struct symtab
*best_s
= NULL
;
1397 register struct partial_symtab
*ps
;
1398 register struct objfile
*objfile
;
1399 CORE_ADDR distance
= 0;
1401 /* Search all symtabs for the one whose file contains our address, and which
1402 is the smallest of all the ones containing the address. This is designed
1403 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1404 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1405 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1407 This happens for native ecoff format, where code from included files
1408 gets its own symtab. The symtab for the included file should have
1409 been read in already via the dependency mechanism.
1410 It might be swifter to create several symtabs with the same name
1411 like xcoff does (I'm not sure).
1413 It also happens for objfiles that have their functions reordered.
1414 For these, the symtab we are looking for is not necessarily read in. */
1416 ALL_SYMTABS (objfile
, s
)
1418 bv
= BLOCKVECTOR (s
);
1419 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1421 if (BLOCK_START (b
) <= pc
1422 #if defined(HPUXHPPA)
1423 && BLOCK_END (b
) >= pc
1425 && BLOCK_END (b
) > pc
1428 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1430 /* For an objfile that has its functions reordered,
1431 find_pc_psymtab will find the proper partial symbol table
1432 and we simply return its corresponding symtab. */
1433 /* In order to better support objfiles that contain both
1434 stabs and coff debugging info, we continue on if a psymtab
1436 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1438 ps
= find_pc_sect_psymtab (pc
, section
);
1440 return PSYMTAB_TO_SYMTAB (ps
);
1446 for (i
= 0; i
< b
->nsyms
; i
++)
1448 fixup_symbol_section (b
->sym
[i
], objfile
);
1449 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1453 continue; /* no symbol in this symtab matches section */
1455 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1464 ps
= find_pc_sect_psymtab (pc
, section
);
1468 /* Might want to error() here (in case symtab is corrupt and
1469 will cause a core dump), but maybe we can successfully
1470 continue, so let's not. */
1471 /* FIXME-32x64: assumes pc fits in a long */
1473 (Internal error: pc 0x%lx in read in psymtab, but not in symtab.)\n",
1474 (unsigned long) pc
);
1475 s
= PSYMTAB_TO_SYMTAB (ps
);
1480 /* Find the symtab associated with PC. Look through the psymtabs and
1481 read in another symtab if necessary. Backward compatibility, no section */
1487 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1493 /* Find the closest symbol value (of any sort -- function or variable)
1494 for a given address value. Slow but complete. (currently unused,
1495 mainly because it is too slow. We could fix it if each symtab and
1496 psymtab had contained in it the addresses ranges of each of its
1497 sections, which also would be required to make things like "info
1498 line *0x2345" cause psymtabs to be converted to symtabs). */
1501 find_addr_symbol (addr
, symtabp
, symaddrp
)
1503 struct symtab
**symtabp
;
1504 CORE_ADDR
*symaddrp
;
1506 struct symtab
*symtab
, *best_symtab
;
1507 struct objfile
*objfile
;
1508 register int bot
, top
;
1509 register struct symbol
*sym
;
1510 register CORE_ADDR sym_addr
;
1511 struct block
*block
;
1514 /* Info on best symbol seen so far */
1516 register CORE_ADDR best_sym_addr
= 0;
1517 struct symbol
*best_sym
= 0;
1519 /* FIXME -- we should pull in all the psymtabs, too! */
1520 ALL_SYMTABS (objfile
, symtab
)
1522 /* Search the global and static blocks in this symtab for
1523 the closest symbol-address to the desired address. */
1525 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1528 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1529 top
= BLOCK_NSYMS (block
);
1530 for (bot
= 0; bot
< top
; bot
++)
1532 sym
= BLOCK_SYM (block
, bot
);
1533 switch (SYMBOL_CLASS (sym
))
1537 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1541 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1542 /* An indirect symbol really lives at *sym_addr,
1543 * so an indirection needs to be done.
1544 * However, I am leaving this commented out because it's
1545 * expensive, and it's possible that symbolization
1546 * could be done without an active process (in
1547 * case this read_memory will fail). RT
1548 sym_addr = read_memory_unsigned_integer
1549 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1554 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1561 if (sym_addr
<= addr
)
1562 if (sym_addr
> best_sym_addr
)
1564 /* Quit if we found an exact match. */
1566 best_sym_addr
= sym_addr
;
1567 best_symtab
= symtab
;
1568 if (sym_addr
== addr
)
1577 *symtabp
= best_symtab
;
1579 *symaddrp
= best_sym_addr
;
1584 /* Find the source file and line number for a given PC value and section.
1585 Return a structure containing a symtab pointer, a line number,
1586 and a pc range for the entire source line.
1587 The value's .pc field is NOT the specified pc.
1588 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1589 use the line that ends there. Otherwise, in that case, the line
1590 that begins there is used. */
1592 /* The big complication here is that a line may start in one file, and end just
1593 before the start of another file. This usually occurs when you #include
1594 code in the middle of a subroutine. To properly find the end of a line's PC
1595 range, we must search all symtabs associated with this compilation unit, and
1596 find the one whose first PC is closer than that of the next line in this
1599 /* If it's worth the effort, we could be using a binary search. */
1601 struct symtab_and_line
1602 find_pc_sect_line (pc
, section
, notcurrent
)
1604 struct sec
*section
;
1608 register struct linetable
*l
;
1611 register struct linetable_entry
*item
;
1612 struct symtab_and_line val
;
1613 struct blockvector
*bv
;
1614 struct minimal_symbol
*msymbol
;
1615 struct minimal_symbol
*mfunsym
;
1617 /* Info on best line seen so far, and where it starts, and its file. */
1619 struct linetable_entry
*best
= NULL
;
1620 CORE_ADDR best_end
= 0;
1621 struct symtab
*best_symtab
= 0;
1623 /* Store here the first line number
1624 of a file which contains the line at the smallest pc after PC.
1625 If we don't find a line whose range contains PC,
1626 we will use a line one less than this,
1627 with a range from the start of that file to the first line's pc. */
1628 struct linetable_entry
*alt
= NULL
;
1629 struct symtab
*alt_symtab
= 0;
1631 /* Info on best line seen in this file. */
1633 struct linetable_entry
*prev
;
1635 /* If this pc is not from the current frame,
1636 it is the address of the end of a call instruction.
1637 Quite likely that is the start of the following statement.
1638 But what we want is the statement containing the instruction.
1639 Fudge the pc to make sure we get that. */
1641 INIT_SAL (&val
); /* initialize to zeroes */
1646 /* elz: added this because this function returned the wrong
1647 information if the pc belongs to a stub (import/export)
1648 to call a shlib function. This stub would be anywhere between
1649 two functions in the target, and the line info was erroneously
1650 taken to be the one of the line before the pc.
1652 /* RT: Further explanation:
1654 * We have stubs (trampolines) inserted between procedures.
1656 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1657 * exists in the main image.
1659 * In the minimal symbol table, we have a bunch of symbols
1660 * sorted by start address. The stubs are marked as "trampoline",
1661 * the others appear as text. E.g.:
1663 * Minimal symbol table for main image
1664 * main: code for main (text symbol)
1665 * shr1: stub (trampoline symbol)
1666 * foo: code for foo (text symbol)
1668 * Minimal symbol table for "shr1" image:
1670 * shr1: code for shr1 (text symbol)
1673 * So the code below is trying to detect if we are in the stub
1674 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1675 * and if found, do the symbolization from the real-code address
1676 * rather than the stub address.
1678 * Assumptions being made about the minimal symbol table:
1679 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1680 * if we're really in the trampoline. If we're beyond it (say
1681 * we're in "foo" in the above example), it'll have a closer
1682 * symbol (the "foo" text symbol for example) and will not
1683 * return the trampoline.
1684 * 2. lookup_minimal_symbol_text() will find a real text symbol
1685 * corresponding to the trampoline, and whose address will
1686 * be different than the trampoline address. I put in a sanity
1687 * check for the address being the same, to avoid an
1688 * infinite recursion.
1690 msymbol
= lookup_minimal_symbol_by_pc(pc
);
1691 if (msymbol
!= NULL
)
1692 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1694 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1695 if (mfunsym
== NULL
)
1696 /* I eliminated this warning since it is coming out
1697 * in the following situation:
1698 * gdb shmain // test program with shared libraries
1699 * (gdb) break shr1 // function in shared lib
1700 * Warning: In stub for ...
1701 * In the above situation, the shared lib is not loaded yet,
1702 * so of course we can't find the real func/line info,
1703 * but the "break" still works, and the warning is annoying.
1704 * So I commented out the warning. RT */
1705 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */;
1707 else if (SYMBOL_VALUE(mfunsym
) == SYMBOL_VALUE(msymbol
))
1708 /* Avoid infinite recursion */
1709 /* See above comment about why warning is commented out */
1710 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */;
1713 return find_pc_line( SYMBOL_VALUE (mfunsym
), 0);
1717 s
= find_pc_sect_symtab (pc
, section
);
1720 /* if no symbol information, return previous pc */
1727 bv
= BLOCKVECTOR (s
);
1729 /* Look at all the symtabs that share this blockvector.
1730 They all have the same apriori range, that we found was right;
1731 but they have different line tables. */
1733 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1735 /* Find the best line in this symtab. */
1742 /* I think len can be zero if the symtab lacks line numbers
1743 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1744 I'm not sure which, and maybe it depends on the symbol
1750 item
= l
->item
; /* Get first line info */
1752 /* Is this file's first line closer than the first lines of other files?
1753 If so, record this file, and its first line, as best alternate. */
1754 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1760 for (i
= 0; i
< len
; i
++, item
++)
1762 /* Leave prev pointing to the linetable entry for the last line
1763 that started at or before PC. */
1770 /* At this point, prev points at the line whose start addr is <= pc, and
1771 item points at the next line. If we ran off the end of the linetable
1772 (pc >= start of the last line), then prev == item. If pc < start of
1773 the first line, prev will not be set. */
1775 /* Is this file's best line closer than the best in the other files?
1776 If so, record this file, and its best line, as best so far. */
1778 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1782 /* If another line is in the linetable, and its PC is closer
1783 than the best_end we currently have, take it as best_end. */
1784 if (i
< len
&& (best_end
== 0 || best_end
> item
->pc
))
1785 best_end
= item
->pc
;
1792 { /* If we didn't find any line # info, just
1798 val
.symtab
= alt_symtab
;
1799 val
.line
= alt
->line
- 1;
1801 /* Don't return line 0, that means that we didn't find the line. */
1802 if (val
.line
== 0) ++val
.line
;
1804 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1810 val
.symtab
= best_symtab
;
1811 val
.line
= best
->line
;
1813 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1818 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1820 val
.section
= section
;
1824 /* Backward compatibility (no section) */
1826 struct symtab_and_line
1827 find_pc_line (pc
, notcurrent
)
1833 section
= find_pc_overlay (pc
);
1834 if (pc_in_unmapped_range (pc
, section
))
1835 pc
= overlay_mapped_address (pc
, section
);
1836 return find_pc_sect_line (pc
, section
, notcurrent
);
1840 static struct symtab
* find_line_symtab
PARAMS ((struct symtab
*, int,
1843 /* Find line number LINE in any symtab whose name is the same as
1846 If found, return the symtab that contains the linetable in which it was
1847 found, set *INDEX to the index in the linetable of the best entry
1848 found, and set *EXACT_MATCH nonzero if the value returned is an
1851 If not found, return NULL. */
1853 static struct symtab
*
1854 find_line_symtab (symtab
, line
, index
, exact_match
)
1855 struct symtab
*symtab
;
1862 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1866 struct linetable
*best_linetable
;
1867 struct symtab
*best_symtab
;
1869 /* First try looking it up in the given symtab. */
1870 best_linetable
= LINETABLE (symtab
);
1871 best_symtab
= symtab
;
1872 best_index
= find_line_common (best_linetable
, line
, &exact
);
1873 if (best_index
< 0 || !exact
)
1875 /* Didn't find an exact match. So we better keep looking for
1876 another symtab with the same name. In the case of xcoff,
1877 multiple csects for one source file (produced by IBM's FORTRAN
1878 compiler) produce multiple symtabs (this is unavoidable
1879 assuming csects can be at arbitrary places in memory and that
1880 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1882 /* BEST is the smallest linenumber > LINE so far seen,
1883 or 0 if none has been seen so far.
1884 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1887 struct objfile
*objfile
;
1890 if (best_index
>= 0)
1891 best
= best_linetable
->item
[best_index
].line
;
1895 ALL_SYMTABS (objfile
, s
)
1897 struct linetable
*l
;
1900 if (!STREQ (symtab
->filename
, s
->filename
))
1903 ind
= find_line_common (l
, line
, &exact
);
1913 if (best
== 0 || l
->item
[ind
].line
< best
)
1915 best
= l
->item
[ind
].line
;
1928 *index
= best_index
;
1930 *exact_match
= exact
;
1935 /* Set the PC value for a given source file and line number and return true.
1936 Returns zero for invalid line number (and sets the PC to 0).
1937 The source file is specified with a struct symtab. */
1940 find_line_pc (symtab
, line
, pc
)
1941 struct symtab
*symtab
;
1945 struct linetable
*l
;
1952 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1955 l
= LINETABLE (symtab
);
1956 *pc
= l
->item
[ind
].pc
;
1963 /* Find the range of pc values in a line.
1964 Store the starting pc of the line into *STARTPTR
1965 and the ending pc (start of next line) into *ENDPTR.
1966 Returns 1 to indicate success.
1967 Returns 0 if could not find the specified line. */
1970 find_line_pc_range (sal
, startptr
, endptr
)
1971 struct symtab_and_line sal
;
1972 CORE_ADDR
*startptr
, *endptr
;
1974 CORE_ADDR startaddr
;
1975 struct symtab_and_line found_sal
;
1978 if (startaddr
==0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1981 /* This whole function is based on address. For example, if line 10 has
1982 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1983 "info line *0x123" should say the line goes from 0x100 to 0x200
1984 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1985 This also insures that we never give a range like "starts at 0x134
1986 and ends at 0x12c". */
1988 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1989 if (found_sal
.line
!= sal
.line
)
1991 /* The specified line (sal) has zero bytes. */
1992 *startptr
= found_sal
.pc
;
1993 *endptr
= found_sal
.pc
;
1997 *startptr
= found_sal
.pc
;
1998 *endptr
= found_sal
.end
;
2003 /* Given a line table and a line number, return the index into the line
2004 table for the pc of the nearest line whose number is >= the specified one.
2005 Return -1 if none is found. The value is >= 0 if it is an index.
2007 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2010 find_line_common (l
, lineno
, exact_match
)
2011 register struct linetable
*l
;
2012 register int lineno
;
2018 /* BEST is the smallest linenumber > LINENO so far seen,
2019 or 0 if none has been seen so far.
2020 BEST_INDEX identifies the item for it. */
2022 int best_index
= -1;
2031 for (i
= 0; i
< len
; i
++)
2033 register struct linetable_entry
*item
= &(l
->item
[i
]);
2035 if (item
->line
== lineno
)
2037 /* Return the first (lowest address) entry which matches. */
2042 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2049 /* If we got here, we didn't get an exact match. */
2056 find_pc_line_pc_range (pc
, startptr
, endptr
)
2058 CORE_ADDR
*startptr
, *endptr
;
2060 struct symtab_and_line sal
;
2061 sal
= find_pc_line (pc
, 0);
2064 return sal
.symtab
!= 0;
2067 /* Given a function symbol SYM, find the symtab and line for the start
2069 If the argument FUNFIRSTLINE is nonzero, we want the first line
2070 of real code inside the function. */
2072 static struct symtab_and_line
2073 find_function_start_sal
PARAMS ((struct symbol
*sym
, int));
2075 static struct symtab_and_line
2076 find_function_start_sal (sym
, funfirstline
)
2081 struct symtab_and_line sal
;
2083 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2084 fixup_symbol_section (sym
, NULL
);
2086 { /* skip "first line" of function (which is actually its prologue) */
2087 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2088 /* If function is in an unmapped overlay, use its unmapped LMA
2089 address, so that SKIP_PROLOGUE has something unique to work on */
2090 if (section_is_overlay (section
) &&
2091 !section_is_mapped (section
))
2092 pc
= overlay_unmapped_address (pc
, section
);
2094 pc
+= FUNCTION_START_OFFSET
;
2095 pc
= SKIP_PROLOGUE (pc
);
2097 /* For overlays, map pc back into its mapped VMA range */
2098 pc
= overlay_mapped_address (pc
, section
);
2100 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2102 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2103 /* Convex: no need to suppress code on first line, if any */
2106 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2107 line is still part of the same function. */
2109 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2110 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2112 /* First pc of next line */
2114 /* Recalculate the line number (might not be N+1). */
2115 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2123 /* If P is of the form "operator[ \t]+..." where `...' is
2124 some legitimate operator text, return a pointer to the
2125 beginning of the substring of the operator text.
2126 Otherwise, return "". */
2128 operator_chars (p
, end
)
2133 if (strncmp (p
, "operator", 8))
2137 /* Don't get faked out by `operator' being part of a longer
2139 if (isalpha(*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2142 /* Allow some whitespace between `operator' and the operator symbol. */
2143 while (*p
== ' ' || *p
== '\t')
2146 /* Recognize 'operator TYPENAME'. */
2148 if (isalpha(*p
) || *p
== '_' || *p
== '$')
2150 register char *q
= p
+1;
2151 while (isalnum(*q
) || *q
== '_' || *q
== '$')
2176 if (p
[1] == '=' || p
[1] == p
[0])
2187 error ("`operator ()' must be specified without whitespace in `()'");
2192 error ("`operator ?:' must be specified without whitespace in `?:'");
2197 error ("`operator []' must be specified without whitespace in `[]'");
2201 error ("`operator %s' not supported", p
);
2208 /* Return the number of methods described for TYPE, including the
2209 methods from types it derives from. This can't be done in the symbol
2210 reader because the type of the baseclass might still be stubbed
2211 when the definition of the derived class is parsed. */
2213 static int total_number_of_methods
PARAMS ((struct type
*type
));
2216 total_number_of_methods (type
)
2222 CHECK_TYPEDEF (type
);
2223 if (TYPE_CPLUS_SPECIFIC (type
) == NULL
)
2225 count
= TYPE_NFN_FIELDS_TOTAL (type
);
2227 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2228 count
+= total_number_of_methods (TYPE_BASECLASS (type
, n
));
2233 /* Recursive helper function for decode_line_1.
2234 Look for methods named NAME in type T.
2235 Return number of matches.
2236 Put matches in SYM_ARR, which should have been allocated with
2237 a size of total_number_of_methods (T) * sizeof (struct symbol *).
2238 Note that this function is g++ specific. */
2241 find_methods (t
, name
, sym_arr
)
2244 struct symbol
**sym_arr
;
2248 struct symbol
*sym_class
;
2249 char *class_name
= type_name_no_tag (t
);
2251 /* Ignore this class if it doesn't have a name. This is ugly, but
2252 unless we figure out how to get the physname without the name of
2253 the class, then the loop can't do any good. */
2255 && (sym_class
= lookup_symbol (class_name
,
2256 (struct block
*)NULL
,
2259 (struct symtab
**)NULL
)))
2263 /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */
2264 t
= SYMBOL_TYPE (sym_class
);
2266 /* Loop over each method name. At this level, all overloads of a name
2267 are counted as a single name. There is an inner loop which loops over
2270 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
2271 method_counter
>= 0;
2275 char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
2276 char dem_opname
[64];
2278 if (strncmp (method_name
, "__", 2) == 0 ||
2279 strncmp (method_name
, "op", 2) == 0 ||
2280 strncmp (method_name
, "type", 4) == 0)
2282 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
2283 method_name
= dem_opname
;
2284 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
2285 method_name
= dem_opname
;
2288 if (STREQ (name
, method_name
))
2289 /* Find all the overloaded methods with that name. */
2290 for (field_counter
= TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
2297 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
2299 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
2303 tmp_name
= gdb_mangle_name (t
,
2306 phys_name
= alloca (strlen (tmp_name
) + 1);
2307 strcpy (phys_name
, tmp_name
);
2311 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
2313 /* Destructor is handled by caller, dont add it to the list */
2314 if (DESTRUCTOR_PREFIX_P (phys_name
))
2317 sym_arr
[i1
] = lookup_symbol (phys_name
,
2318 NULL
, VAR_NAMESPACE
,
2320 (struct symtab
**) NULL
);
2325 /* This error message gets printed, but the method
2326 still seems to be found
2327 fputs_filtered("(Cannot find method ", gdb_stdout);
2328 fprintf_symbol_filtered (gdb_stdout, phys_name,
2330 DMGL_PARAMS | DMGL_ANSI);
2331 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
2338 /* Only search baseclasses if there is no match yet, since names in
2339 derived classes override those in baseclasses.
2341 FIXME: The above is not true; it is only true of member functions
2342 if they have the same number of arguments (??? - section 13.1 of the
2343 ARM says the function members are not in the same scope but doesn't
2344 really spell out the rules in a way I understand. In any case, if
2345 the number of arguments differ this is a case in which we can overload
2346 rather than hiding without any problem, and gcc 2.4.5 does overload
2347 rather than hiding in this case). */
2350 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
2351 i1
+= find_methods (TYPE_BASECLASS (t
, ibase
), name
, sym_arr
+ i1
);
2356 /* Helper function for decode_line_1.
2357 Build a canonical line spec in CANONICAL if it is non-NULL and if
2358 the SAL has a symtab.
2359 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
2360 If SYMNAME is NULL the line number from SAL is used and the canonical
2361 line spec is `filename:linenum'. */
2364 build_canonical_line_spec (sal
, symname
, canonical
)
2365 struct symtab_and_line
*sal
;
2369 char **canonical_arr
;
2370 char *canonical_name
;
2372 struct symtab
*s
= sal
->symtab
;
2374 if (s
== (struct symtab
*)NULL
2375 || s
->filename
== (char *)NULL
2376 || canonical
== (char ***)NULL
)
2379 canonical_arr
= (char **) xmalloc (sizeof (char *));
2380 *canonical
= canonical_arr
;
2382 filename
= s
->filename
;
2383 if (symname
!= NULL
)
2385 canonical_name
= xmalloc (strlen (filename
) + strlen (symname
) + 2);
2386 sprintf (canonical_name
, "%s:%s", filename
, symname
);
2390 canonical_name
= xmalloc (strlen (filename
) + 30);
2391 sprintf (canonical_name
, "%s:%d", filename
, sal
->line
);
2393 canonical_arr
[0] = canonical_name
;
2396 /* Parse a string that specifies a line number.
2397 Pass the address of a char * variable; that variable will be
2398 advanced over the characters actually parsed.
2402 LINENUM -- that line number in current file. PC returned is 0.
2403 FILE:LINENUM -- that line in that file. PC returned is 0.
2404 FUNCTION -- line number of openbrace of that function.
2405 PC returned is the start of the function.
2406 VARIABLE -- line number of definition of that variable.
2408 FILE:FUNCTION -- likewise, but prefer functions in that file.
2409 *EXPR -- line in which address EXPR appears.
2411 This may all be followed by an "if EXPR", which we ignore.
2413 FUNCTION may be an undebuggable function found in minimal symbol table.
2415 If the argument FUNFIRSTLINE is nonzero, we want the first line
2416 of real code inside a function when a function is specified, and it is
2417 not OK to specify a variable or type to get its line number.
2419 DEFAULT_SYMTAB specifies the file to use if none is specified.
2420 It defaults to current_source_symtab.
2421 DEFAULT_LINE specifies the line number to use for relative
2422 line numbers (that start with signs). Defaults to current_source_line.
2423 If CANONICAL is non-NULL, store an array of strings containing the canonical
2424 line specs there if necessary. Currently overloaded member functions and
2425 line numbers or static functions without a filename yield a canonical
2426 line spec. The array and the line spec strings are allocated on the heap,
2427 it is the callers responsibility to free them.
2429 Note that it is possible to return zero for the symtab
2430 if no file is validly specified. Callers must check that.
2431 Also, the line number returned may be invalid. */
2433 /* We allow single quotes in various places. This is a hideous
2434 kludge, which exists because the completer can't yet deal with the
2435 lack of single quotes. FIXME: write a linespec_completer which we
2436 can use as appropriate instead of make_symbol_completion_list. */
2438 struct symtabs_and_lines
2439 decode_line_1 (argptr
, funfirstline
, default_symtab
, default_line
, canonical
)
2442 struct symtab
*default_symtab
;
2446 struct symtabs_and_lines values
;
2447 #ifdef HPPA_COMPILER_BUG
2448 /* FIXME: The native HP 9000/700 compiler has a bug which appears
2449 when optimizing this file with target i960-vxworks. I haven't
2450 been able to construct a simple test case. The problem is that
2451 in the second call to SKIP_PROLOGUE below, the compiler somehow
2452 does not realize that the statement val = find_pc_line (...) will
2453 change the values of the fields of val. It extracts the elements
2454 into registers at the top of the block, and does not update the
2455 registers after the call to find_pc_line. You can check this by
2456 inserting a printf at the end of find_pc_line to show what values
2457 it is returning for val.pc and val.end and another printf after
2458 the call to see what values the function actually got (remember,
2459 this is compiling with cc -O, with this patch removed). You can
2460 also examine the assembly listing: search for the second call to
2461 skip_prologue; the LDO statement before the next call to
2462 find_pc_line loads the address of the structure which
2463 find_pc_line will return; if there is a LDW just before the LDO,
2464 which fetches an element of the structure, then the compiler
2467 Setting val to volatile avoids the problem. We must undef
2468 volatile, because the HPPA native compiler does not define
2469 __STDC__, although it does understand volatile, and so volatile
2470 will have been defined away in defs.h. */
2472 volatile struct symtab_and_line val
;
2473 #define volatile /*nothing*/
2475 struct symtab_and_line val
;
2477 register char *p
, *p1
;
2478 char *q
, *pp
, *ii
, *p2
;
2482 register struct symtab
*s
;
2484 register struct symbol
*sym
;
2485 /* The symtab that SYM was found in. */
2486 struct symtab
*sym_symtab
;
2488 register CORE_ADDR pc
;
2489 register struct minimal_symbol
*msymbol
;
2491 struct symbol
*sym_class
;
2494 int is_quote_enclosed
;
2498 struct symbol
**sym_arr
;
2500 char *saved_arg
= *argptr
;
2501 extern char *gdb_completer_quote_characters
;
2503 INIT_SAL (&val
); /* initialize to zeroes */
2505 /* Defaults have defaults. */
2507 if (default_symtab
== 0)
2509 default_symtab
= current_source_symtab
;
2510 default_line
= current_source_line
;
2513 /* See if arg is *PC */
2515 if (**argptr
== '*')
2518 pc
= parse_and_eval_address_1 (argptr
);
2520 values
.sals
= (struct symtab_and_line
*)
2521 xmalloc (sizeof (struct symtab_and_line
));
2524 values
.sals
[0] = find_pc_line (pc
, 0);
2525 values
.sals
[0].pc
= pc
;
2526 values
.sals
[0].section
= find_pc_overlay (pc
);
2531 /* 'has_if' is for the syntax:
2532 * (gdb) break foo if (a==b)
2534 if ((ii
= strstr(*argptr
, " if ")) != NULL
||
2535 (ii
= strstr(*argptr
, "\tif ")) != NULL
||
2536 (ii
= strstr(*argptr
, " if\t")) != NULL
||
2537 (ii
= strstr(*argptr
, "\tif\t")) != NULL
||
2538 (ii
= strstr(*argptr
, " if(")) != NULL
||
2539 (ii
= strstr(*argptr
, "\tif( ")) != NULL
)
2541 /* Temporarily zap out "if (condition)" to not
2542 * confuse the parenthesis-checking code below.
2543 * This is undone below. Do not change ii!!
2549 /* Set various flags.
2550 * 'has_parens' is important for overload checking, where
2551 * we allow things like:
2552 * (gdb) break c::f(int)
2555 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2557 is_quoted
= (**argptr
2558 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
);
2560 has_parens
= ((pp
= strchr (*argptr
, '(')) != NULL
2561 && (pp
= strchr (pp
, ')')) != NULL
);
2563 /* Now that we're safely past the has_parens check,
2564 * put back " if (condition)" so outer layers can see it
2569 /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
2570 and we must isolate the first half. Outer layers will call again later
2571 for the second half */
2572 if ((ii
= strchr(*argptr
, ',')) != NULL
)
2574 /* Temporarily zap out second half to not
2575 * confuse the code below.
2576 * This is undone below. Do not change ii!!
2582 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2583 /* May also be CLASS::MEMBER, or NAMESPACE::NAME */
2584 /* Look for ':', but ignore inside of <> */
2590 is_quote_enclosed
= 1;
2594 is_quote_enclosed
= 0;
2599 char * temp_end
= find_template_name_end (p
);
2601 error ("malformed template specification in command");
2604 /* Check for the end of the first half of the linespec. End of line,
2605 a tab, a double colon or the last single colon, or a space. But
2606 if enclosed in double quotes we do not break on enclosed spaces */
2610 && ((p
[1] == ':') || (strchr (p
+ 1, ':') == NULL
)))
2611 || ((p
[0] == ' ') && ! is_quote_enclosed
))
2613 if (p
[0] == '.' && strchr (p
, ':') == NULL
) /* Java qualified method. */
2615 /* Find the *last* '.', since the others are package qualifiers. */
2616 for (p1
= p
; *p1
; p1
++)
2624 while (p
[0] == ' ' || p
[0] == '\t') p
++;
2625 /* if the closing double quote was left at the end, remove it */
2626 if (is_quote_enclosed
&& ((pp
= strchr (p
, '"')) != NULL
))
2630 /* Now that we've safely parsed the first half,
2631 * put back ',' so outer layers can see it
2636 if ((p
[0] == ':' || p
[0] == '.') && !has_parens
)
2640 if (is_quoted
) *argptr
= *argptr
+1;
2641 if (p
[0] == '.' || p
[1] ==':')
2644 char * saved_arg2
= *argptr
;
2646 /* First check for "global" namespace specification,
2647 of the form "::foo". If found, skip over the colons
2648 and jump to normal symbol processing */
2649 if ((*argptr
== p
) || (p
[-1] == ' ') || (p
[-1] == '\t'))
2652 /* We have what looks like a class or namespace
2653 scope specification (A::B), possibly with many
2654 levels of namespaces or classes (A::B::C::D).
2656 Some versions of the HP ANSI C++ compiler (as also possibly
2657 other compilers) generate class/function/member names with
2658 embedded double-colons if they are inside namespaces. To
2659 handle this, we loop a few times, considering larger and
2660 larger prefixes of the string as though they were single
2661 symbols. So, if the initially supplied string is
2662 A::B::C::D::foo, we have to look up "A", then "A::B",
2663 then "A::B::C", then "A::B::C::D", and finally
2664 "A::B::C::D::foo" as single, monolithic symbols, because
2665 A, B, C or D may be namespaces.
2667 Note that namespaces can nest only inside other
2668 namespaces, and not inside classes. So we need only
2669 consider *prefixes* of the string; there is no need to look up
2670 "B::C" separately as a symbol in the previous example. */
2672 p2
= p
; /* save for restart */
2675 /* Extract the class name. */
2677 while (p
!= *argptr
&& p
[-1] == ' ') --p
;
2678 copy
= (char *) alloca (p
- *argptr
+ 1);
2679 memcpy (copy
, *argptr
, p
- *argptr
);
2680 copy
[p
- *argptr
] = 0;
2682 /* Discard the class name from the arg. */
2683 p
= p1
+ (p1
[0] == ':' ? 2 : 1);
2684 while (*p
== ' ' || *p
== '\t') p
++;
2687 sym_class
= lookup_symbol (copy
, 0, STRUCT_NAMESPACE
, 0,
2688 (struct symtab
**)NULL
);
2691 (t
= check_typedef (SYMBOL_TYPE (sym_class
)),
2692 (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2693 || TYPE_CODE (t
) == TYPE_CODE_UNION
)))
2695 /* Arg token is not digits => try it as a function name
2696 Find the next token(everything up to end or next blank). */
2698 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
)
2700 p
= skip_quoted(*argptr
);
2701 *argptr
= *argptr
+ 1;
2706 while (*p
&& *p
!=' ' && *p
!='\t' && *p
!=',' && *p
!=':') p
++;
2709 q = operator_chars (*argptr, &q1);
2713 char *tmp = alloca (q1 - q + 1);
2714 memcpy (tmp, q, q1 - q);
2716 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
2720 printf_filtered ("no mangling for \"%s\"\n", tmp);
2721 cplusplus_hint (saved_arg);
2722 return_to_top_level (RETURN_ERROR);
2724 copy = (char*) alloca (3 + strlen(opname));
2725 sprintf (copy, "__%s", opname);
2731 copy
= (char *) alloca (p
- *argptr
+ 1 );
2732 memcpy (copy
, *argptr
, p
- *argptr
);
2733 copy
[p
- *argptr
] = '\0';
2735 && copy
[p
- *argptr
- 1]
2736 && strchr (gdb_completer_quote_characters
,
2737 copy
[p
- *argptr
- 1]) != NULL
)
2738 copy
[p
- *argptr
- 1] = '\0';
2741 /* no line number may be specified */
2742 while (*p
== ' ' || *p
== '\t') p
++;
2746 i1
= 0; /* counter for the symbol array */
2747 sym_arr
= (struct symbol
**) alloca(total_number_of_methods (t
)
2748 * sizeof(struct symbol
*));
2750 if (destructor_name_p (copy
, t
))
2752 /* Destructors are a special case. */
2753 int m_index
, f_index
;
2755 if (get_destructor_fn_field (t
, &m_index
, &f_index
))
2757 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (t
, m_index
);
2760 lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f
, f_index
),
2761 NULL
, VAR_NAMESPACE
, (int *) NULL
,
2762 (struct symtab
**)NULL
);
2768 i1
= find_methods (t
, copy
, sym_arr
);
2771 /* There is exactly one field with that name. */
2774 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2776 values
.sals
= (struct symtab_and_line
*)
2777 xmalloc (sizeof (struct symtab_and_line
));
2779 values
.sals
[0] = find_function_start_sal (sym
,
2790 /* There is more than one field with that name
2791 (overloaded). Ask the user which one to use. */
2792 return decode_line_2 (sym_arr
, i1
, funfirstline
, canonical
);
2798 if (OPNAME_PREFIX_P (copy
))
2800 tmp
= (char *)alloca (strlen (copy
+3) + 9);
2801 strcpy (tmp
, "operator ");
2802 strcat (tmp
, copy
+3);
2809 ("the class `%s' does not have destructor defined\n",
2810 SYMBOL_SOURCE_NAME(sym_class
));
2813 ("the class %s does not have any method named %s\n",
2814 SYMBOL_SOURCE_NAME(sym_class
), tmp
);
2815 cplusplus_hint (saved_arg
);
2816 return_to_top_level (RETURN_ERROR
);
2820 /* Move pointer up to next possible class/namespace token */
2821 p
= p2
+ 1; /* restart with old value +1 */
2822 /* Move pointer ahead to next double-colon */
2823 while (*p
&& (p
[0] != ' ') && (p
[0] != '\t') && (p
[0] != '\'')) {
2825 temp_end
= find_template_name_end (p
);
2827 error ("malformed template specification in command");
2830 else if ((p
[0] == ':') && (p
[1] == ':'))
2831 break; /* found double-colon */
2837 break; /* out of the while (1) */
2839 p2
= p
; /* save restart for next time around */
2840 *argptr
= saved_arg2
; /* restore argptr */
2843 /* Last chance attempt -- check entire name as a symbol */
2844 /* Use "copy" in preparation for jumping out of this block,
2845 to be consistent with usage following the jump target */
2846 copy
= (char *) alloca (p
- saved_arg2
+ 1);
2847 memcpy (copy
, saved_arg2
, p
- saved_arg2
);
2848 /* Note: if is_quoted should be true, we snuff out quote here anyway */
2849 copy
[p
-saved_arg2
] = '\000';
2850 /* Set argptr to skip over the name */
2851 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2852 /* Look up entire name */
2853 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2854 s
= (struct symtab
*) 0;
2855 /* Prepare to jump: restore the " if (condition)" so outer layers see it */
2856 /* Symbol was found --> jump to normal symbol processing.
2857 Code following "symbol_found" expects "copy" to have the
2858 symbol name, "sym" to have the symbol pointer, "s" to be
2859 a specified file's symtab, and sym_symtab to be the symbol's
2861 /* By jumping there we avoid falling through the FILE:LINE and
2862 FILE:FUNC processing stuff below */
2866 /* Couldn't find any interpretation as classes/namespaces, so give up */
2868 /* The quotes are important if copy is empty. */
2870 ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy
);
2871 cplusplus_hint (saved_arg
);
2872 return_to_top_level (RETURN_ERROR
);
2877 /* Extract the file name. */
2879 while (p
!= *argptr
&& p
[-1] == ' ') --p
;
2880 if ((*p
== '"') && is_quote_enclosed
) --p
;
2881 copy
= (char *) alloca (p
- *argptr
+ 1);
2882 if ((**argptr
== '"') && is_quote_enclosed
)
2884 memcpy (copy
, *argptr
+ 1, p
- *argptr
- 1);
2885 /* It may have the ending quote right after the file name */
2886 if (copy
[p
- *argptr
- 2] == '"')
2887 copy
[p
- *argptr
- 2] = 0;
2889 copy
[p
- *argptr
- 1] = 0;
2893 memcpy (copy
, *argptr
, p
- *argptr
);
2894 copy
[p
- *argptr
] = 0;
2897 /* Find that file's data. */
2898 s
= lookup_symtab (copy
);
2901 if (!have_full_symbols () && !have_partial_symbols ())
2902 error (no_symtab_msg
);
2903 error ("No source file named %s.", copy
);
2906 /* Discard the file name from the arg. */
2908 while (*p
== ' ' || *p
== '\t') p
++;
2912 /* No one really seems to know why this was added. It certainly
2913 breaks the command line, though, whenever the passed
2914 name is of the form ClassName::Method. This bit of code
2915 singles out the class name, and if funfirstline is set (for
2916 example, you are setting a breakpoint at this function),
2917 you get an error. This did not occur with earlier
2918 verions, so I am ifdef'ing this out. 3/29/99 */
2920 /* Check if what we have till now is a symbol name */
2922 /* We may be looking at a template instantiation such
2923 as "foo<int>". Check here whether we know about it,
2924 instead of falling through to the code below which
2925 handles ordinary function names, because that code
2926 doesn't like seeing '<' and '>' in a name -- the
2927 skip_quoted call doesn't go past them. So see if we
2928 can figure it out right now. */
2930 copy
= (char *) alloca (p
- *argptr
+ 1);
2931 memcpy (copy
, *argptr
, p
- *argptr
);
2932 copy
[p
- *argptr
] = '\000';
2933 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2935 /* Yes, we have a symbol; jump to symbol processing */
2936 /* Code after symbol_found expects S, SYM_SYMTAB, SYM,
2937 and COPY to be set correctly */
2938 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2939 s
= (struct symtab
*) 0;
2942 /* Otherwise fall out from here and go to file/line spec
2947 /* S is specified file's symtab, or 0 if no file specified.
2948 arg no longer contains the file name. */
2950 /* Check whether arg is all digits (and sign) */
2953 if (*q
== '-' || *q
== '+') q
++;
2954 while (*q
>= '0' && *q
<= '9')
2957 if (q
!= *argptr
&& (*q
== 0 || *q
== ' ' || *q
== '\t' || *q
== ','))
2959 /* We found a token consisting of all digits -- at least one digit. */
2960 enum sign
{none
, plus
, minus
} sign
= none
;
2962 /* We might need a canonical line spec if no file was specified. */
2963 int need_canonical
= (s
== 0) ? 1 : 0;
2965 /* This is where we need to make sure that we have good defaults.
2966 We must guarantee that this section of code is never executed
2967 when we are called with just a function name, since
2968 select_source_symtab calls us with such an argument */
2970 if (s
== 0 && default_symtab
== 0)
2972 select_source_symtab (0);
2973 default_symtab
= current_source_symtab
;
2974 default_line
= current_source_line
;
2977 if (**argptr
== '+')
2978 sign
= plus
, (*argptr
)++;
2979 else if (**argptr
== '-')
2980 sign
= minus
, (*argptr
)++;
2981 val
.line
= atoi (*argptr
);
2988 val
.line
= default_line
+ val
.line
;
2994 val
.line
= default_line
- val
.line
;
2999 break; /* No need to adjust val.line. */
3002 while (*q
== ' ' || *q
== '\t') q
++;
3007 /* It is possible that this source file has more than one symtab,
3008 and that the new line number specification has moved us from the
3009 default (in s) to a new one. */
3010 val
.symtab
= find_line_symtab (s
, val
.line
, NULL
, NULL
);
3011 if (val
.symtab
== 0)
3015 values
.sals
= (struct symtab_and_line
*)
3016 xmalloc (sizeof (struct symtab_and_line
));
3017 values
.sals
[0] = val
;
3020 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3024 /* Arg token is not digits => try it as a variable name
3025 Find the next token (everything up to end or next whitespace). */
3027 if (**argptr
== '$') /* May be a convenience variable */
3028 p
= skip_quoted (*argptr
+ (((*argptr
)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */
3031 p
= skip_quoted (*argptr
);
3033 error ("Unmatched single quote.");
3035 else if (has_parens
)
3041 p
= skip_quoted(*argptr
);
3044 copy
= (char *) alloca (p
- *argptr
+ 1);
3045 memcpy (copy
, *argptr
, p
- *argptr
);
3046 copy
[p
- *argptr
] = '\0';
3049 && copy
[0] == copy
[p
- *argptr
- 1]
3050 && strchr (gdb_completer_quote_characters
, copy
[0]) != NULL
)
3052 copy
[p
- *argptr
- 1] = '\0';
3055 while (*p
== ' ' || *p
== '\t') p
++;
3058 /* If it starts with $: may be a legitimate variable or routine name
3059 (e.g. HP-UX millicode routines such as $$dyncall), or it may
3060 be history value, or it may be a convenience variable */
3066 int need_canonical
= 0;
3068 p
= (copy
[1] == '$') ? copy
+ 2 : copy
+ 1;
3069 while (*p
>= '0' && *p
<= '9')
3071 if (!*p
) /* reached end of token without hitting non-digit */
3073 /* We have a value history reference */
3074 sscanf ((copy
[1] == '$') ? copy
+ 2 : copy
+ 1, "%d", &index
);
3075 valx
= access_value_history ((copy
[1] == '$') ? -index
: index
);
3076 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3077 error ("History values used in line specs must have integer values.");
3081 /* Not all digits -- may be user variable/function or a
3082 convenience variable */
3084 /* Look up entire name as a symbol first */
3085 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
3086 s
= (struct symtab
*) 0;
3088 /* Symbol was found --> jump to normal symbol processing.
3089 Code following "symbol_found" expects "copy" to have the
3090 symbol name, "sym" to have the symbol pointer, "s" to be
3091 a specified file's symtab, and sym_symtab to be the symbol's
3096 /* If symbol was not found, look in minimal symbol tables */
3097 msymbol
= lookup_minimal_symbol (copy
, 0, 0);
3098 /* Min symbol was found --> jump to minsym processing. */
3100 goto minimal_symbol_found
;
3102 /* Not a user variable or function -- must be convenience variable */
3103 need_canonical
= (s
== 0) ? 1 : 0;
3104 valx
= value_of_internalvar (lookup_internalvar (copy
+ 1));
3105 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3106 error ("Convenience variables used in line specs must have integer values.");
3109 /* Either history value or convenience value from above, in valx */
3110 val
.symtab
= s
? s
: default_symtab
;
3111 val
.line
= value_as_long (valx
);
3114 values
.sals
= (struct symtab_and_line
*)xmalloc (sizeof val
);
3115 values
.sals
[0] = val
;
3119 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3125 /* Look up that token as a variable.
3126 If file specified, use that file's per-file block to start with. */
3128 sym
= lookup_symbol (copy
,
3129 (s
? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
3130 : get_selected_block ()),
3131 VAR_NAMESPACE
, 0, &sym_symtab
);
3133 symbol_found
: /* We also jump here from inside the C++ class/namespace
3134 code on finding a symbol of the form "A::B::C" */
3138 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3140 /* Arg is the name of a function */
3141 values
.sals
= (struct symtab_and_line
*)
3142 xmalloc (sizeof (struct symtab_and_line
));
3143 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
3146 /* Don't use the SYMBOL_LINE; if used at all it points to
3147 the line containing the parameters or thereabouts, not
3148 the first line of code. */
3150 /* We might need a canonical line spec if it is a static
3154 struct blockvector
*bv
= BLOCKVECTOR (sym_symtab
);
3155 struct block
*b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
3156 if (lookup_block_symbol (b
, copy
, VAR_NAMESPACE
) != NULL
)
3157 build_canonical_line_spec (values
.sals
, copy
, canonical
);
3164 error ("\"%s\" is not a function", copy
);
3165 else if (SYMBOL_LINE (sym
) != 0)
3167 /* We know its line number. */
3168 values
.sals
= (struct symtab_and_line
*)
3169 xmalloc (sizeof (struct symtab_and_line
));
3171 memset (&values
.sals
[0], 0, sizeof (values
.sals
[0]));
3172 values
.sals
[0].symtab
= sym_symtab
;
3173 values
.sals
[0].line
= SYMBOL_LINE (sym
);
3177 /* This can happen if it is compiled with a compiler which doesn't
3178 put out line numbers for variables. */
3179 /* FIXME: Shouldn't we just set .line and .symtab to zero
3180 and return? For example, "info line foo" could print
3182 error ("Line number not known for symbol \"%s\"", copy
);
3186 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
3188 minimal_symbol_found
: /* We also jump here from the case for variables
3189 that begin with '$' */
3191 if (msymbol
!= NULL
)
3193 values
.sals
= (struct symtab_and_line
*)
3194 xmalloc (sizeof (struct symtab_and_line
));
3195 values
.sals
[0] = find_pc_sect_line ( SYMBOL_VALUE_ADDRESS (msymbol
),
3196 (struct sec
*)0,0 );
3197 values
.sals
[0].section
= SYMBOL_BFD_SECTION (msymbol
);
3200 values
.sals
[0].pc
+= FUNCTION_START_OFFSET
;
3201 values
.sals
[0].pc
= SKIP_PROLOGUE (values
.sals
[0].pc
);
3207 if (!have_full_symbols () &&
3208 !have_partial_symbols () && !have_minimal_symbols ())
3209 error (no_symtab_msg
);
3211 error ("Function \"%s\" not defined.", copy
);
3212 return values
; /* for lint */
3215 struct symtabs_and_lines
3216 decode_line_spec (string
, funfirstline
)
3220 struct symtabs_and_lines sals
;
3222 error ("Empty line specification.");
3223 sals
= decode_line_1 (&string
, funfirstline
,
3224 current_source_symtab
, current_source_line
,
3227 error ("Junk at end of line specification: %s", string
);
3231 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
3232 operate on (ask user if necessary).
3233 If CANONICAL is non-NULL return a corresponding array of mangled names
3234 as canonical line specs there. */
3236 static struct symtabs_and_lines
3237 decode_line_2 (sym_arr
, nelts
, funfirstline
, canonical
)
3238 struct symbol
*sym_arr
[];
3243 struct symtabs_and_lines values
, return_values
;
3248 struct cleanup
*old_chain
;
3249 char **canonical_arr
= (char **)NULL
;
3251 values
.sals
= (struct symtab_and_line
*)
3252 alloca (nelts
* sizeof(struct symtab_and_line
));
3253 return_values
.sals
= (struct symtab_and_line
*)
3254 xmalloc (nelts
* sizeof(struct symtab_and_line
));
3255 old_chain
= make_cleanup (free
, return_values
.sals
);
3259 canonical_arr
= (char **) xmalloc (nelts
* sizeof (char *));
3260 make_cleanup (free
, canonical_arr
);
3261 memset (canonical_arr
, 0, nelts
* sizeof (char *));
3262 *canonical
= canonical_arr
;
3266 printf_unfiltered("[0] cancel\n[1] all\n");
3269 INIT_SAL (&return_values
.sals
[i
]); /* initialize to zeroes */
3270 INIT_SAL (&values
.sals
[i
]);
3271 if (sym_arr
[i
] && SYMBOL_CLASS (sym_arr
[i
]) == LOC_BLOCK
)
3273 values
.sals
[i
] = find_function_start_sal (sym_arr
[i
], funfirstline
);
3274 printf_unfiltered ("[%d] %s at %s:%d\n",
3276 SYMBOL_SOURCE_NAME (sym_arr
[i
]),
3277 values
.sals
[i
].symtab
->filename
,
3278 values
.sals
[i
].line
);
3281 printf_unfiltered ("?HERE\n");
3285 if ((prompt
= getenv ("PS2")) == NULL
)
3289 args
= command_line_input (prompt
, 0, "overload-choice");
3291 if (args
== 0 || *args
== 0)
3292 error_no_arg ("one or more choice numbers");
3300 while (*arg1
>= '0' && *arg1
<= '9') arg1
++;
3301 if (*arg1
&& *arg1
!= ' ' && *arg1
!= '\t')
3302 error ("Arguments must be choice numbers.");
3307 error ("cancelled");
3312 for (i
= 0; i
< nelts
; i
++)
3314 if (canonical_arr
[i
] == NULL
)
3316 symname
= SYMBOL_NAME (sym_arr
[i
]);
3317 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3321 memcpy (return_values
.sals
, values
.sals
,
3322 (nelts
* sizeof(struct symtab_and_line
)));
3323 return_values
.nelts
= nelts
;
3324 discard_cleanups (old_chain
);
3325 return return_values
;
3328 if (num
>= nelts
+ 2)
3330 printf_unfiltered ("No choice number %d.\n", num
);
3335 if (values
.sals
[num
].pc
)
3339 symname
= SYMBOL_NAME (sym_arr
[num
]);
3340 make_cleanup (free
, symname
);
3341 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3343 return_values
.sals
[i
++] = values
.sals
[num
];
3344 values
.sals
[num
].pc
= 0;
3348 printf_unfiltered ("duplicate request for %d ignored.\n", num
);
3353 while (*args
== ' ' || *args
== '\t') args
++;
3355 return_values
.nelts
= i
;
3356 discard_cleanups (old_chain
);
3357 return return_values
;
3361 /* Slave routine for sources_info. Force line breaks at ,'s.
3362 NAME is the name to print and *FIRST is nonzero if this is the first
3363 name printed. Set *FIRST to zero. */
3365 output_source_filename (name
, first
)
3369 /* Table of files printed so far. Since a single source file can
3370 result in several partial symbol tables, we need to avoid printing
3371 it more than once. Note: if some of the psymtabs are read in and
3372 some are not, it gets printed both under "Source files for which
3373 symbols have been read" and "Source files for which symbols will
3374 be read in on demand". I consider this a reasonable way to deal
3375 with the situation. I'm not sure whether this can also happen for
3376 symtabs; it doesn't hurt to check. */
3377 static char **tab
= NULL
;
3378 /* Allocated size of tab in elements.
3379 Start with one 256-byte block (when using GNU malloc.c).
3380 24 is the malloc overhead when range checking is in effect. */
3381 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3382 /* Current size of tab in elements. */
3383 static int tab_cur_size
;
3390 tab
= (char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3394 /* Is NAME in tab? */
3395 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3396 if (STREQ (*p
, name
))
3397 /* Yes; don't print it again. */
3399 /* No; add it to tab. */
3400 if (tab_cur_size
== tab_alloc_size
)
3402 tab_alloc_size
*= 2;
3403 tab
= (char **) xrealloc ((char *) tab
, tab_alloc_size
* sizeof (*tab
));
3405 tab
[tab_cur_size
++] = name
;
3413 printf_filtered (", ");
3417 fputs_filtered (name
, gdb_stdout
);
3421 sources_info (ignore
, from_tty
)
3425 register struct symtab
*s
;
3426 register struct partial_symtab
*ps
;
3427 register struct objfile
*objfile
;
3430 if (!have_full_symbols () && !have_partial_symbols ())
3432 error (no_symtab_msg
);
3435 printf_filtered ("Source files for which symbols have been read in:\n\n");
3438 ALL_SYMTABS (objfile
, s
)
3440 output_source_filename (s
-> filename
, &first
);
3442 printf_filtered ("\n\n");
3444 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
3447 ALL_PSYMTABS (objfile
, ps
)
3451 output_source_filename (ps
-> filename
, &first
);
3454 printf_filtered ("\n");
3458 file_matches (file
, files
, nfiles
)
3465 if (file
!= NULL
&& nfiles
!= 0)
3467 for (i
= 0; i
< nfiles
; i
++)
3469 if (strcmp (files
[i
], basename (file
)) == 0)
3473 else if (nfiles
== 0)
3478 /* Free any memory associated with a search. */
3480 free_search_symbols (symbols
)
3481 struct symbol_search
*symbols
;
3483 struct symbol_search
*p
;
3484 struct symbol_search
*next
;
3486 for (p
= symbols
; p
!= NULL
; p
= next
)
3493 /* Search the symbol table for matches to the regular expression REGEXP,
3494 returning the results in *MATCHES.
3496 Only symbols of KIND are searched:
3497 FUNCTIONS_NAMESPACE - search all functions
3498 TYPES_NAMESPACE - search all type names
3499 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
3500 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
3501 and constants (enums)
3503 free_search_symbols should be called when *MATCHES is no longer needed.
3506 search_symbols (regexp
, kind
, nfiles
, files
, matches
)
3508 namespace_enum kind
;
3511 struct symbol_search
**matches
;
3514 register struct symtab
*s
;
3515 register struct partial_symtab
*ps
;
3516 register struct blockvector
*bv
;
3517 struct blockvector
*prev_bv
= 0;
3518 register struct block
*b
;
3521 register struct symbol
*sym
;
3522 struct partial_symbol
**psym
;
3523 struct objfile
*objfile
;
3524 struct minimal_symbol
*msymbol
;
3527 static enum minimal_symbol_type types
[]
3528 = {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3529 static enum minimal_symbol_type types2
[]
3530 = {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3531 static enum minimal_symbol_type types3
[]
3532 = {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3533 static enum minimal_symbol_type types4
[]
3534 = {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3535 enum minimal_symbol_type ourtype
;
3536 enum minimal_symbol_type ourtype2
;
3537 enum minimal_symbol_type ourtype3
;
3538 enum minimal_symbol_type ourtype4
;
3539 struct symbol_search
*sr
;
3540 struct symbol_search
*psr
;
3541 struct symbol_search
*tail
;
3542 struct cleanup
*old_chain
= NULL
;
3544 if (kind
< LABEL_NAMESPACE
)
3545 error ("must search on specific namespace");
3547 ourtype
= types
[(int) (kind
- LABEL_NAMESPACE
)];
3548 ourtype2
= types2
[(int) (kind
- LABEL_NAMESPACE
)];
3549 ourtype3
= types3
[(int) (kind
- LABEL_NAMESPACE
)];
3550 ourtype4
= types4
[(int) (kind
- LABEL_NAMESPACE
)];
3552 sr
= *matches
= NULL
;
3557 /* Make sure spacing is right for C++ operators.
3558 This is just a courtesy to make the matching less sensitive
3559 to how many spaces the user leaves between 'operator'
3560 and <TYPENAME> or <OPERATOR>. */
3562 char *opname
= operator_chars (regexp
, &opend
);
3565 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3566 if (isalpha(*opname
) || *opname
== '_' || *opname
== '$')
3568 /* There should 1 space between 'operator' and 'TYPENAME'. */
3569 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3574 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3575 if (opname
[-1] == ' ')
3578 /* If wrong number of spaces, fix it. */
3581 char *tmp
= (char*) alloca(opend
-opname
+10);
3582 sprintf(tmp
, "operator%.*s%s", fix
, " ", opname
);
3587 if (0 != (val
= re_comp (regexp
)))
3588 error ("Invalid regexp (%s): %s", val
, regexp
);
3591 /* Search through the partial symtabs *first* for all symbols
3592 matching the regexp. That way we don't have to reproduce all of
3593 the machinery below. */
3595 ALL_PSYMTABS (objfile
, ps
)
3597 struct partial_symbol
**bound
, **gbound
, **sbound
;
3600 if (ps
->readin
) continue;
3602 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3603 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3606 /* Go through all of the symbols stored in a partial
3607 symtab in one loop. */
3608 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3613 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3615 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3626 /* If it would match (logic taken from loop below)
3627 load the file and go on to the next one */
3628 if (file_matches (ps
->filename
, files
, nfiles
)
3629 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
3630 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3631 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3632 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3633 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3634 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3636 PSYMTAB_TO_SYMTAB(ps
);
3644 /* Here, we search through the minimal symbol tables for functions
3645 and variables that match, and force their symbols to be read.
3646 This is in particular necessary for demangled variable names,
3647 which are no longer put into the partial symbol tables.
3648 The symbol will then be found during the scan of symtabs below.
3650 For functions, find_pc_symtab should succeed if we have debug info
3651 for the function, for variables we have to call lookup_symbol
3652 to determine if the variable has debug info.
3653 If the lookup fails, set found_misc so that we will rescan to print
3654 any matching symbols without debug info.
3657 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
3659 ALL_MSYMBOLS (objfile
, msymbol
)
3661 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3662 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3663 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3664 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3666 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3668 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3670 if (kind
== FUNCTIONS_NAMESPACE
3671 || lookup_symbol (SYMBOL_NAME (msymbol
),
3672 (struct block
*) NULL
,
3674 0, (struct symtab
**) NULL
) == NULL
)
3682 ALL_SYMTABS (objfile
, s
)
3684 bv
= BLOCKVECTOR (s
);
3685 /* Often many files share a blockvector.
3686 Scan each blockvector only once so that
3687 we don't get every symbol many times.
3688 It happens that the first symtab in the list
3689 for any given blockvector is the main file. */
3691 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3693 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3694 /* Skip the sort if this block is always sorted. */
3695 if (!BLOCK_SHOULD_SORT (b
))
3696 sort_block_syms (b
);
3697 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
3700 sym
= BLOCK_SYM (b
, j
);
3701 if (file_matches (s
->filename
, files
, nfiles
)
3702 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
3703 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3704 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3705 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3706 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3707 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3708 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3711 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3715 psr
->msymbol
= NULL
;
3720 old_chain
= make_cleanup ((make_cleanup_func
)
3721 free_search_symbols
, sr
);
3732 /* If there are no eyes, avoid all contact. I mean, if there are
3733 no debug symbols, then print directly from the msymbol_vector. */
3735 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
3737 ALL_MSYMBOLS (objfile
, msymbol
)
3739 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3740 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3741 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3742 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3744 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3746 /* Functions: Look up by address. */
3747 if (kind
!= FUNCTIONS_NAMESPACE
||
3748 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3750 /* Variables/Absolutes: Look up by name */
3751 if (lookup_symbol (SYMBOL_NAME (msymbol
),
3752 (struct block
*) NULL
, VAR_NAMESPACE
,
3753 0, (struct symtab
**) NULL
) == NULL
)
3756 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3758 psr
->msymbol
= msymbol
;
3765 old_chain
= make_cleanup ((make_cleanup_func
)
3766 free_search_symbols
, &sr
);
3780 discard_cleanups (old_chain
);
3783 /* Helper function for symtab_symbol_info, this function uses
3784 the data returned from search_symbols() to print information
3785 regarding the match to gdb_stdout.
3788 print_symbol_info (kind
, s
, sym
, block
, last
)
3789 namespace_enum kind
;
3795 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3797 fputs_filtered ("\nFile ", gdb_stdout
);
3798 fputs_filtered (s
->filename
, gdb_stdout
);
3799 fputs_filtered (":\n", gdb_stdout
);
3802 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3803 printf_filtered ("static ");
3805 /* Typedef that is not a C++ class */
3806 if (kind
== TYPES_NAMESPACE
3807 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3808 c_typedef_print (SYMBOL_TYPE(sym
), sym
, gdb_stdout
);
3809 /* variable, func, or typedef-that-is-c++-class */
3810 else if (kind
< TYPES_NAMESPACE
||
3811 (kind
== TYPES_NAMESPACE
&&
3812 SYMBOL_NAMESPACE(sym
) == STRUCT_NAMESPACE
))
3814 type_print (SYMBOL_TYPE (sym
),
3815 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3816 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3819 printf_filtered (";\n");
3824 /* Tiemann says: "info methods was never implemented." */
3825 char *demangled_name
;
3826 c_type_print_base (TYPE_FN_FIELD_TYPE(t
, block
),
3828 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t
, block
),
3830 if (TYPE_FN_FIELD_STUB (t
, block
))
3831 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
3833 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
3834 DMGL_ANSI
| DMGL_PARAMS
);
3835 if (demangled_name
== NULL
)
3836 fprintf_filtered (stream
, "<badly mangled name %s>",
3837 TYPE_FN_FIELD_PHYSNAME (t
, block
));
3840 fputs_filtered (demangled_name
, stream
);
3841 free (demangled_name
);
3847 /* This help function for symtab_symbol_info() prints information
3848 for non-debugging symbols to gdb_stdout.
3851 print_msymbol_info (msymbol
)
3852 struct minimal_symbol
*msymbol
;
3854 printf_filtered (" %08lx %s\n",
3855 (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol
),
3856 SYMBOL_SOURCE_NAME (msymbol
));
3859 /* This is the guts of the commands "info functions", "info types", and
3860 "info variables". It calls search_symbols to find all matches and then
3861 print_[m]symbol_info to print out some useful information about the
3865 symtab_symbol_info (regexp
, kind
, from_tty
)
3867 namespace_enum kind
;
3870 static char *classnames
[]
3871 = {"variable", "function", "type", "method"};
3872 struct symbol_search
*symbols
;
3873 struct symbol_search
*p
;
3874 struct cleanup
*old_chain
;
3875 char *last_filename
= NULL
;
3878 /* must make sure that if we're interrupted, symbols gets freed */
3879 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3880 old_chain
= make_cleanup ((make_cleanup_func
) free_search_symbols
, symbols
);
3882 printf_filtered (regexp
3883 ? "All %ss matching regular expression \"%s\":\n"
3884 : "All defined %ss:\n",
3885 classnames
[(int) (kind
- LABEL_NAMESPACE
- 1)], regexp
);
3887 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3891 if (p
->msymbol
!= NULL
)
3895 printf_filtered ("\nNon-debugging symbols:\n");
3898 print_msymbol_info (p
->msymbol
);
3902 print_symbol_info (kind
,
3907 last_filename
= p
->symtab
->filename
;
3911 do_cleanups (old_chain
);
3915 variables_info (regexp
, from_tty
)
3919 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3923 functions_info (regexp
, from_tty
)
3927 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3931 types_info (regexp
, from_tty
)
3935 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3939 /* Tiemann says: "info methods was never implemented." */
3941 methods_info (regexp
)
3944 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
3948 /* Breakpoint all functions matching regular expression. */
3950 rbreak_command (regexp
, from_tty
)
3954 struct symbol_search
*ss
;
3955 struct symbol_search
*p
;
3956 struct cleanup
*old_chain
;
3958 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3959 old_chain
= make_cleanup ((make_cleanup_func
) free_search_symbols
, ss
);
3961 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3963 if (p
->msymbol
== NULL
)
3965 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3966 + strlen (SYMBOL_NAME (p
->symbol
))
3968 strcpy (string
, p
->symtab
->filename
);
3969 strcat (string
, ":'");
3970 strcat (string
, SYMBOL_NAME (p
->symbol
));
3971 strcat (string
, "'");
3972 break_command (string
, from_tty
);
3973 print_symbol_info (FUNCTIONS_NAMESPACE
,
3977 p
->symtab
->filename
);
3981 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3982 printf_filtered ("<function, no debug info> %s;\n",
3983 SYMBOL_SOURCE_NAME (p
->msymbol
));
3987 do_cleanups (old_chain
);
3991 /* Return Nonzero if block a is lexically nested within block b,
3992 or if a and b have the same pc range.
3993 Return zero otherwise. */
3996 struct block
*a
, *b
;
4000 return BLOCK_START (a
) >= BLOCK_START (b
)
4001 && BLOCK_END (a
) <= BLOCK_END (b
);
4005 /* Helper routine for make_symbol_completion_list. */
4007 static int return_val_size
;
4008 static int return_val_index
;
4009 static char **return_val
;
4011 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4013 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
4014 /* Put only the mangled name on the list. */ \
4015 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
4016 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
4017 completion_list_add_name \
4018 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
4020 completion_list_add_name \
4021 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
4024 /* Test to see if the symbol specified by SYMNAME (which is already
4025 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4026 characters. If so, add it to the current completion list. */
4029 completion_list_add_name (symname
, sym_text
, sym_text_len
, text
, word
)
4039 /* clip symbols that cannot match */
4041 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
4046 /* Clip any symbol names that we've already considered. (This is a
4047 time optimization) */
4049 for (i
= 0; i
< return_val_index
; ++i
)
4051 if (STREQ (symname
, return_val
[i
]))
4057 /* We have a match for a completion, so add SYMNAME to the current list
4058 of matches. Note that the name is moved to freshly malloc'd space. */
4062 if (word
== sym_text
)
4064 new = xmalloc (strlen (symname
) + 5);
4065 strcpy (new, symname
);
4067 else if (word
> sym_text
)
4069 /* Return some portion of symname. */
4070 new = xmalloc (strlen (symname
) + 5);
4071 strcpy (new, symname
+ (word
- sym_text
));
4075 /* Return some of SYM_TEXT plus symname. */
4076 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4077 strncpy (new, word
, sym_text
- word
);
4078 new[sym_text
- word
] = '\0';
4079 strcat (new, symname
);
4082 /* Recheck for duplicates if we intend to add a modified symbol. */
4083 if (word
!= sym_text
)
4085 for (i
= 0; i
< return_val_index
; ++i
)
4087 if (STREQ (new, return_val
[i
]))
4095 if (return_val_index
+ 3 > return_val_size
)
4097 newsize
= (return_val_size
*= 2) * sizeof (char *);
4098 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
4100 return_val
[return_val_index
++] = new;
4101 return_val
[return_val_index
] = NULL
;
4105 /* Return a NULL terminated array of all symbols (regardless of class) which
4106 begin by matching TEXT. If the answer is no symbols, then the return value
4107 is an array which contains only a NULL pointer.
4109 Problem: All of the symbols have to be copied because readline frees them.
4110 I'm not going to worry about this; hopefully there won't be that many. */
4113 make_symbol_completion_list (text
, word
)
4117 register struct symbol
*sym
;
4118 register struct symtab
*s
;
4119 register struct partial_symtab
*ps
;
4120 register struct minimal_symbol
*msymbol
;
4121 register struct objfile
*objfile
;
4122 register struct block
*b
, *surrounding_static_block
= 0;
4124 struct partial_symbol
**psym
;
4125 /* The symbol we are completing on. Points in same buffer as text. */
4127 /* Length of sym_text. */
4130 /* Now look for the symbol we are supposed to complete on.
4131 FIXME: This should be language-specific. */
4135 char *quote_pos
= NULL
;
4137 /* First see if this is a quoted string. */
4139 for (p
= text
; *p
!= '\0'; ++p
)
4141 if (quote_found
!= '\0')
4143 if (*p
== quote_found
)
4144 /* Found close quote. */
4146 else if (*p
== '\\' && p
[1] == quote_found
)
4147 /* A backslash followed by the quote character
4148 doesn't end the string. */
4151 else if (*p
== '\'' || *p
== '"')
4157 if (quote_found
== '\'')
4158 /* A string within single quotes can be a symbol, so complete on it. */
4159 sym_text
= quote_pos
+ 1;
4160 else if (quote_found
== '"')
4161 /* A double-quoted string is never a symbol, nor does it make sense
4162 to complete it any other way. */
4166 /* It is not a quoted string. Break it based on the characters
4167 which are in symbols. */
4170 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4179 sym_text_len
= strlen (sym_text
);
4181 return_val_size
= 100;
4182 return_val_index
= 0;
4183 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4184 return_val
[0] = NULL
;
4186 /* Look through the partial symtabs for all symbols which begin
4187 by matching SYM_TEXT. Add each one that you find to the list. */
4189 ALL_PSYMTABS (objfile
, ps
)
4191 /* If the psymtab's been read in we'll get it when we search
4192 through the blockvector. */
4193 if (ps
->readin
) continue;
4195 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4196 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4197 + ps
->n_global_syms
);
4200 /* If interrupted, then quit. */
4202 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4205 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4206 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4207 + ps
->n_static_syms
);
4211 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4215 /* At this point scan through the misc symbol vectors and add each
4216 symbol you find to the list. Eventually we want to ignore
4217 anything that isn't a text symbol (everything else will be
4218 handled by the psymtab code above). */
4220 ALL_MSYMBOLS (objfile
, msymbol
)
4223 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4226 /* Search upwards from currently selected frame (so that we can
4227 complete on local vars. */
4229 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4231 if (!BLOCK_SUPERBLOCK (b
))
4233 surrounding_static_block
= b
; /* For elmin of dups */
4236 /* Also catch fields of types defined in this places which match our
4237 text string. Only complete on types visible from current context. */
4239 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4241 sym
= BLOCK_SYM (b
, i
);
4242 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4243 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4245 struct type
*t
= SYMBOL_TYPE (sym
);
4246 enum type_code c
= TYPE_CODE (t
);
4248 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4250 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4252 if (TYPE_FIELD_NAME (t
, j
))
4254 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4255 sym_text
, sym_text_len
, text
, word
);
4263 /* Go through the symtabs and check the externs and statics for
4264 symbols which match. */
4266 ALL_SYMTABS (objfile
, s
)
4269 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4270 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4272 sym
= BLOCK_SYM (b
, i
);
4273 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4277 ALL_SYMTABS (objfile
, s
)
4280 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4281 /* Don't do this block twice. */
4282 if (b
== surrounding_static_block
) continue;
4283 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4285 sym
= BLOCK_SYM (b
, i
);
4286 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4290 return (return_val
);
4293 /* Determine if PC is in the prologue of a function. The prologue is the area
4294 between the first instruction of a function, and the first executable line.
4295 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4297 If non-zero, func_start is where we think the prologue starts, possibly
4298 by previous examination of symbol table information.
4302 in_prologue (pc
, func_start
)
4304 CORE_ADDR func_start
;
4306 struct symtab_and_line sal
;
4307 CORE_ADDR func_addr
, func_end
;
4309 if (!find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4310 goto nosyms
; /* Might be in prologue */
4312 sal
= find_pc_line (func_addr
, 0);
4317 /* sal.end is the address of the first instruction past sal.line. */
4318 if (sal
.end
> func_addr
4319 && sal
.end
<= func_end
) /* Is prologue in function? */
4320 return pc
< sal
.end
; /* Yes, is pc in prologue? */
4322 /* The line after the prologue seems to be outside the function. In this
4323 case, tell the caller to find the prologue the hard way. */
4327 /* Come here when symtabs don't contain line # info. In this case, it is
4328 likely that the user has stepped into a library function w/o symbols, or
4329 is doing a stepi/nexti through code without symbols. */
4333 /* If func_start is zero (meaning unknown) then we don't know whether pc is
4334 in the prologue or not. I.E. it might be. */
4336 if (!func_start
) return 1;
4338 /* We need to call the target-specific prologue skipping functions with the
4339 function's start address because PC may be pointing at an instruction that
4340 could be mistakenly considered part of the prologue. */
4342 func_start
= SKIP_PROLOGUE (func_start
);
4344 return pc
< func_start
;
4348 /* Begin overload resolution functions */
4349 /* Helper routine for make_symbol_completion_list. */
4351 static int sym_return_val_size
;
4352 static int sym_return_val_index
;
4353 static struct symbol
**sym_return_val
;
4355 /* Test to see if the symbol specified by SYMNAME (which is already
4356 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4357 characters. If so, add it to the current completion list. */
4360 overload_list_add_symbol (sym
, oload_name
)
4361 struct symbol
* sym
;
4367 /* Get the demangled name without parameters */
4368 char * sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
4371 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
4372 strcpy (sym_name
, SYMBOL_NAME (sym
));
4375 /* skip symbols that cannot match */
4376 if (strcmp (sym_name
, oload_name
) != 0)
4379 /* If there is no type information, we can't do anything, so skip */
4380 if (SYMBOL_TYPE (sym
) == NULL
)
4383 /* skip any symbols that we've already considered. */
4384 for (i
= 0; i
< sym_return_val_index
; ++i
)
4385 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
4388 /* We have a match for an overload instance, so add SYM to the current list
4389 * of overload instances */
4390 if (sym_return_val_index
+ 3 > sym_return_val_size
)
4392 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
4393 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
4395 sym_return_val
[sym_return_val_index
++] = sym
;
4396 sym_return_val
[sym_return_val_index
] = NULL
;
4401 /* Return a null-terminated list of pointers to function symbols that
4402 * match name of the supplied symbol FSYM.
4403 * This is used in finding all overloaded instances of a function name.
4404 * This has been modified from make_symbol_completion_list. */
4408 make_symbol_overload_list (fsym
)
4409 struct symbol
* fsym
;
4411 register struct symbol
*sym
;
4412 register struct symtab
*s
;
4413 register struct partial_symtab
*ps
;
4414 register struct minimal_symbol
*msymbol
;
4415 register struct objfile
*objfile
;
4416 register struct block
*b
, *surrounding_static_block
= 0;
4418 struct partial_symbol
**psym
;
4419 /* The name we are completing on. */
4420 char *oload_name
= NULL
;
4421 /* Length of name. */
4422 int oload_name_len
= 0;
4424 /* Look for the symbol we are supposed to complete on.
4425 * FIXME: This should be language-specific. */
4427 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
4430 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
4431 strcpy (oload_name
, SYMBOL_NAME (fsym
));
4433 oload_name_len
= strlen (oload_name
);
4435 sym_return_val_size
= 100;
4436 sym_return_val_index
= 0;
4437 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
4438 sym_return_val
[0] = NULL
;
4440 /* Comment and #if 0 from Rajiv Mirani <mirani@cup.hp.com>.
4441 However, leaving #if 0's around is uncool. We need to figure out
4442 what this is really trying to do, decide whether we want that,
4443 and either fix it or delete it. --- Jim Blandy, Mar 1999 */
4445 /* ??? RM: What in hell is this? overload_list_add_symbol expects a symbol,
4446 * not a partial_symbol or a minimal_symbol. And it looks at the type field
4447 * of the symbol, and we don't know the type of minimal and partial symbols
4450 /* Look through the partial symtabs for all symbols which begin
4451 by matching OLOAD_NAME. Add each one that you find to the list. */
4453 ALL_PSYMTABS (objfile
, ps
)
4455 /* If the psymtab's been read in we'll get it when we search
4456 through the blockvector. */
4457 if (ps
->readin
) continue;
4459 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4460 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4461 + ps
->n_global_syms
);
4464 /* If interrupted, then quit. */
4466 overload_list_add_symbol (*psym
, oload_name
);
4469 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4470 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4471 + ps
->n_static_syms
);
4475 overload_list_add_symbol (*psym
, oload_name
);
4479 /* At this point scan through the misc symbol vectors and add each
4480 symbol you find to the list. Eventually we want to ignore
4481 anything that isn't a text symbol (everything else will be
4482 handled by the psymtab code above). */
4484 ALL_MSYMBOLS (objfile
, msymbol
)
4487 overload_list_add_symbol (msymbol
, oload_name
);
4491 /* Search upwards from currently selected frame (so that we can
4492 complete on local vars. */
4494 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4496 if (!BLOCK_SUPERBLOCK (b
))
4498 surrounding_static_block
= b
; /* For elimination of dups */
4501 /* Also catch fields of types defined in this places which match our
4502 text string. Only complete on types visible from current context. */
4504 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4506 sym
= BLOCK_SYM (b
, i
);
4507 overload_list_add_symbol (sym
, oload_name
);
4511 /* Go through the symtabs and check the externs and statics for
4512 symbols which match. */
4514 ALL_SYMTABS (objfile
, s
)
4517 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4518 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4520 sym
= BLOCK_SYM (b
, i
);
4521 overload_list_add_symbol (sym
, oload_name
);
4525 ALL_SYMTABS (objfile
, s
)
4528 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4529 /* Don't do this block twice. */
4530 if (b
== surrounding_static_block
) continue;
4531 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4533 sym
= BLOCK_SYM (b
, i
);
4534 overload_list_add_symbol (sym
, oload_name
);
4540 return (sym_return_val
);
4543 /* End of overload resolution functions */
4547 _initialize_symtab ()
4549 add_info ("variables", variables_info
,
4550 "All global and static variable names, or those matching REGEXP.");
4552 add_com("whereis", class_info
, variables_info
,
4553 "All global and static variable names, or those matching REGEXP.");
4555 add_info ("functions", functions_info
,
4556 "All function names, or those matching REGEXP.");
4558 /* FIXME: This command has at least the following problems:
4559 1. It prints builtin types (in a very strange and confusing fashion).
4560 2. It doesn't print right, e.g. with
4561 typedef struct foo *FOO
4562 type_print prints "FOO" when we want to make it (in this situation)
4563 print "struct foo *".
4564 I also think "ptype" or "whatis" is more likely to be useful (but if
4565 there is much disagreement "info types" can be fixed). */
4566 add_info ("types", types_info
,
4567 "All type names, or those matching REGEXP.");
4570 add_info ("methods", methods_info
,
4571 "All method names, or those matching REGEXP::REGEXP.\n\
4572 If the class qualifier is omitted, it is assumed to be the current scope.\n\
4573 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4576 add_info ("sources", sources_info
,
4577 "Source files in the program.");
4579 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4580 "Set a breakpoint for all functions matching REGEXP.");
4584 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4585 add_com ("lg", class_info
, variables_info
,
4586 "All global and static variable names, or those matching REGEXP.");
4589 /* Initialize the one built-in type that isn't language dependent... */
4590 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4591 "<unknown type>", (struct objfile
*) NULL
);