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 void _initialize_symtab
PARAMS ((void));
115 /* The single non-language-specific builtin type */
116 struct type
*builtin_type_error
;
118 /* Block in which the most recently searched-for symbol was found.
119 Might be better to make this a parameter to lookup_symbol and
122 const struct block
*block_found
;
124 char no_symtab_msg
[] = "No symbol table is loaded. Use the \"file\" command.";
126 /* While the C++ support is still in flux, issue a possibly helpful hint on
127 using the new command completion feature on single quoted demangled C++
128 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
131 cplusplus_hint (name
)
134 while (*name
== '\'')
136 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name
, name
);
137 printf_filtered ("(Note leading single quote.)\n");
140 /* Check for a symtab of a specific name; first in symtabs, then in
141 psymtabs. *If* there is no '/' in the name, a match after a '/'
142 in the symtab filename will also work. */
144 static struct symtab
*
145 lookup_symtab_1 (name
)
148 register struct symtab
*s
;
149 register struct partial_symtab
*ps
;
150 register char *slash
;
151 register struct objfile
*objfile
;
155 /* First, search for an exact match */
157 ALL_SYMTABS (objfile
, s
)
158 if (STREQ (name
, s
->filename
))
161 slash
= strchr (name
, '/');
163 /* Now, search for a matching tail (only if name doesn't have any dirs) */
166 ALL_SYMTABS (objfile
, s
)
168 char *p
= s
-> filename
;
169 char *tail
= strrchr (p
, '/');
178 /* Same search rules as above apply here, but now we look thru the
181 ps
= lookup_partial_symtab (name
);
186 error ("Internal: readin %s pst for `%s' found when no symtab found.",
187 ps
-> filename
, name
);
189 s
= PSYMTAB_TO_SYMTAB (ps
);
194 /* At this point, we have located the psymtab for this file, but
195 the conversion to a symtab has failed. This usually happens
196 when we are looking up an include file. In this case,
197 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
198 been created. So, we need to run through the symtabs again in
199 order to find the file.
200 XXX - This is a crock, and should be fixed inside of the the
201 symbol parsing routines. */
205 /* Lookup the symbol table of a source file named NAME. Try a couple
206 of variations if the first lookup doesn't work. */
212 register struct symtab
*s
;
217 s
= lookup_symtab_1 (name
);
221 /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
224 /* If name not found as specified, see if adding ".c" helps. */
225 /* Why is this? Is it just a user convenience? (If so, it's pretty
226 questionable in the presence of C++, FORTRAN, etc.). It's not in
229 copy
= (char *) alloca (strlen (name
) + 3);
232 s
= lookup_symtab_1 (copy
);
236 /* We didn't find anything; die. */
240 /* Lookup the partial symbol table of a source file named NAME.
241 *If* there is no '/' in the name, a match after a '/'
242 in the psymtab filename will also work. */
244 struct partial_symtab
*
245 lookup_partial_symtab (name
)
248 register struct partial_symtab
*pst
;
249 register struct objfile
*objfile
;
251 ALL_PSYMTABS (objfile
, pst
)
253 if (STREQ (name
, pst
-> filename
))
259 /* Now, search for a matching tail (only if name doesn't have any dirs) */
261 if (!strchr (name
, '/'))
262 ALL_PSYMTABS (objfile
, pst
)
264 char *p
= pst
-> filename
;
265 char *tail
= strrchr (p
, '/');
277 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
278 full method name, which consist of the class name (from T), the unadorned
279 method name from METHOD_ID, and the signature for the specific overload,
280 specified by SIGNATURE_ID. Note that this function is g++ specific. */
283 gdb_mangle_name (type
, method_id
, signature_id
)
285 int method_id
, signature_id
;
287 int mangled_name_len
;
289 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
290 struct fn_field
*method
= &f
[signature_id
];
291 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
292 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
293 char *newname
= type_name_no_tag (type
);
295 /* Does the form of physname indicate that it is the full mangled name
296 of a constructor (not just the args)? */
297 int is_full_physname_constructor
;
300 int is_destructor
= DESTRUCTOR_PREFIX_P (physname
);
301 /* Need a new type prefix. */
302 char *const_prefix
= method
->is_const
? "C" : "";
303 char *volatile_prefix
= method
->is_volatile
? "V" : "";
305 int len
= (newname
== NULL
? 0 : strlen (newname
));
307 is_full_physname_constructor
=
308 ((physname
[0]=='_' && physname
[1]=='_' &&
309 (isdigit(physname
[2]) || physname
[2]=='Q' || physname
[2]=='t'))
310 || (strncmp(physname
, "__ct", 4) == 0));
313 is_full_physname_constructor
|| (newname
&& STREQ(field_name
, newname
));
316 is_destructor
= (strncmp(physname
, "__dt", 4) == 0);
318 if (is_destructor
|| is_full_physname_constructor
)
320 mangled_name
= (char*) xmalloc(strlen(physname
)+1);
321 strcpy(mangled_name
, physname
);
327 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
329 else if (physname
[0] == 't' || physname
[0] == 'Q')
331 /* The physname for template and qualified methods already includes
333 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
339 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
341 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
346 /* Only needed for GNU-mangled names. ANSI-mangled names
347 work with the normal mechanisms. */
348 if (OPNAME_PREFIX_P (field_name
))
350 const char *opname
= cplus_mangle_opname (field_name
+ 3, 0);
352 error ("No mangling for \"%s\"", field_name
);
353 mangled_name_len
+= strlen (opname
);
354 mangled_name
= (char *)xmalloc (mangled_name_len
);
356 strncpy (mangled_name
, field_name
, 3);
357 mangled_name
[3] = '\0';
358 strcat (mangled_name
, opname
);
362 mangled_name
= (char *)xmalloc (mangled_name_len
);
364 mangled_name
[0] = '\0';
366 strcpy (mangled_name
, field_name
);
368 strcat (mangled_name
, buf
);
369 /* If the class doesn't have a name, i.e. newname NULL, then we just
370 mangle it using 0 for the length of the class. Thus it gets mangled
371 as something starting with `::' rather than `classname::'. */
373 strcat (mangled_name
, newname
);
375 strcat (mangled_name
, physname
);
376 return (mangled_name
);
381 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
383 struct partial_symtab
*
384 find_pc_sect_psymtab (pc
, section
)
388 register struct partial_symtab
*pst
;
389 register struct objfile
*objfile
;
391 ALL_PSYMTABS (objfile
, pst
)
393 #if defined(HPUXHPPA)
394 if (pc
>= pst
->textlow
&& pc
<= pst
->texthigh
)
396 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
399 struct minimal_symbol
*msymbol
;
400 struct partial_symtab
*tpst
;
402 /* An objfile that has its functions reordered might have
403 many partial symbol tables containing the PC, but
404 we want the partial symbol table that contains the
405 function containing the PC. */
406 if (!(objfile
->flags
& OBJF_REORDERED
) &&
407 section
== 0) /* can't validate section this way */
410 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
414 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
416 #if defined(HPUXHPPA)
417 if (pc
>= tpst
->textlow
&& pc
<= tpst
->texthigh
)
419 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
422 struct partial_symbol
*p
;
424 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
426 && SYMBOL_VALUE_ADDRESS(p
)
427 == SYMBOL_VALUE_ADDRESS (msymbol
))
437 /* Find which partial symtab contains PC. Return 0 if none.
438 Backward compatibility, no section */
440 struct partial_symtab
*
444 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
447 /* Find which partial symbol within a psymtab matches PC and SECTION.
448 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
450 struct partial_symbol
*
451 find_pc_sect_psymbol (psymtab
, pc
, section
)
452 struct partial_symtab
*psymtab
;
456 struct partial_symbol
*best
= NULL
, *p
, **pp
;
460 psymtab
= find_pc_sect_psymtab (pc
, section
);
464 /* Cope with programs that start at address 0 */
465 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
467 /* Search the global symbols as well as the static symbols, so that
468 find_pc_partial_function doesn't use a minimal symbol and thus
469 cache a bad endaddr. */
470 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
471 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
472 < psymtab
->n_global_syms
);
476 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
477 && SYMBOL_CLASS (p
) == LOC_BLOCK
478 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
479 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
480 || (psymtab
->textlow
== 0
481 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
483 if (section
) /* match on a specific section */
485 fixup_psymbol_section (p
, psymtab
->objfile
);
486 if (SYMBOL_BFD_SECTION (p
) != section
)
489 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
494 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
495 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
496 < psymtab
->n_static_syms
);
500 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
501 && SYMBOL_CLASS (p
) == LOC_BLOCK
502 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
503 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
504 || (psymtab
->textlow
== 0
505 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
507 if (section
) /* match on a specific section */
509 fixup_psymbol_section (p
, psymtab
->objfile
);
510 if (SYMBOL_BFD_SECTION (p
) != section
)
513 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
521 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
522 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
524 struct partial_symbol
*
525 find_pc_psymbol (psymtab
, pc
)
526 struct partial_symtab
*psymtab
;
529 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
532 /* Debug symbols usually don't have section information. We need to dig that
533 out of the minimal symbols and stash that in the debug symbol. */
536 fixup_section (ginfo
, objfile
)
537 struct general_symbol_info
*ginfo
;
538 struct objfile
*objfile
;
540 struct minimal_symbol
*msym
;
541 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
544 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
548 fixup_symbol_section (sym
, objfile
)
550 struct objfile
*objfile
;
555 if (SYMBOL_BFD_SECTION (sym
))
558 fixup_section (&sym
->ginfo
, objfile
);
563 static struct partial_symbol
*
564 fixup_psymbol_section (psym
, objfile
)
565 struct partial_symbol
*psym
;
566 struct objfile
*objfile
;
571 if (SYMBOL_BFD_SECTION (psym
))
574 fixup_section (&psym
->ginfo
, objfile
);
579 /* Find the definition for a specified symbol name NAME
580 in namespace NAMESPACE, visible from lexical block BLOCK.
581 Returns the struct symbol pointer, or zero if no symbol is found.
582 If SYMTAB is non-NULL, store the symbol table in which the
583 symbol was found there, or NULL if not found.
584 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
585 NAME is a field of the current implied argument `this'. If so set
586 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
587 BLOCK_FOUND is set to the block in which NAME is found (in the case of
588 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
590 /* This function has a bunch of loops in it and it would seem to be
591 attractive to put in some QUIT's (though I'm not really sure
592 whether it can run long enough to be really important). But there
593 are a few calls for which it would appear to be bad news to quit
594 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
595 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
596 code below which can error(), but that probably doesn't affect
597 these calls since they are looking for a known variable and thus
598 can probably assume it will never hit the C++ code). */
601 lookup_symbol (name
, block
, namespace, is_a_field_of_this
, symtab
)
603 register const struct block
*block
;
604 const namespace_enum
namespace;
605 int *is_a_field_of_this
;
606 struct symtab
**symtab
;
608 register struct symbol
*sym
;
609 register struct symtab
*s
= NULL
;
610 register struct partial_symtab
*ps
;
611 struct blockvector
*bv
;
612 register struct objfile
*objfile
= NULL
;
613 register struct block
*b
;
614 register struct minimal_symbol
*msymbol
;
616 /* Search specified block and its superiors. */
620 sym
= lookup_block_symbol (block
, name
, namespace);
626 /* Search the list of symtabs for one which contains the
627 address of the start of this block. */
628 ALL_SYMTABS (objfile
, s
)
630 bv
= BLOCKVECTOR (s
);
631 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
632 if (BLOCK_START (b
) <= BLOCK_START (block
)
633 && BLOCK_END (b
) > BLOCK_START (block
))
640 return fixup_symbol_section (sym
, objfile
);
642 block
= BLOCK_SUPERBLOCK (block
);
645 /* FIXME: this code is never executed--block is always NULL at this
646 point. What is it trying to do, anyway? We already should have
647 checked the STATIC_BLOCK above (it is the superblock of top-level
648 blocks). Why is VAR_NAMESPACE special-cased? */
649 /* Don't need to mess with the psymtabs; if we have a block,
650 that file is read in. If we don't, then we deal later with
651 all the psymtab stuff that needs checking. */
652 /* Note (RT): The following never-executed code looks unnecessary to me also.
653 * If we change the code to use the original (passed-in)
654 * value of 'block', we could cause it to execute, but then what
655 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
656 * 'block' was already searched by the above code. And the STATIC_BLOCK's
657 * of *other* symtabs (those files not containing 'block' lexically)
658 * should not contain 'block' address-wise. So we wouldn't expect this
659 * code to find any 'sym''s that were not found above. I vote for
660 * deleting the following paragraph of code.
662 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
665 /* Find the right symtab. */
666 ALL_SYMTABS (objfile
, s
)
668 bv
= BLOCKVECTOR (s
);
669 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
670 if (BLOCK_START (b
) <= BLOCK_START (block
)
671 && BLOCK_END (b
) > BLOCK_START (block
))
673 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
679 return fixup_symbol_section (sym
, objfile
);
686 /* C++: If requested to do so by the caller,
687 check to see if NAME is a field of `this'. */
688 if (is_a_field_of_this
)
690 struct value
*v
= value_of_this (0);
692 *is_a_field_of_this
= 0;
693 if (v
&& check_field (v
, name
))
695 *is_a_field_of_this
= 1;
702 /* Now search all global blocks. Do the symtab's first, then
703 check the psymtab's. If a psymtab indicates the existence
704 of the desired name as a global, then do psymtab-to-symtab
705 conversion on the fly and return the found symbol. */
707 ALL_SYMTABS (objfile
, s
)
709 bv
= BLOCKVECTOR (s
);
710 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
711 sym
= lookup_block_symbol (block
, name
, namespace);
717 return fixup_symbol_section (sym
, objfile
);
723 /* Check for the possibility of the symbol being a function or
724 a mangled variable that is stored in one of the minimal symbol tables.
725 Eventually, all global symbols might be resolved in this way. */
727 if (namespace == VAR_NAMESPACE
)
729 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
732 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
733 SYMBOL_BFD_SECTION (msymbol
));
736 /* This is a function which has a symtab for its address. */
737 bv
= BLOCKVECTOR (s
);
738 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
739 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
741 /* We kept static functions in minimal symbol table as well as
742 in static scope. We want to find them in the symbol table. */
744 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
745 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
749 /* sym == 0 if symbol was found in the minimal symbol table
750 but not in the symtab.
751 Return 0 to use the msymbol definition of "foo_".
753 This happens for Fortran "foo_" symbols,
754 which are "foo" in the symtab.
756 This can also happen if "asm" is used to make a
757 regular symbol but not a debugging symbol, e.g.
764 return fixup_symbol_section (sym
, objfile
);
766 else if (MSYMBOL_TYPE (msymbol
) != mst_text
767 && MSYMBOL_TYPE (msymbol
) != mst_file_text
768 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
770 /* This is a mangled variable, look it up by its
772 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
773 namespace, is_a_field_of_this
, symtab
);
775 /* There are no debug symbols for this file, or we are looking
776 for an unmangled variable.
777 Try to find a matching static symbol below. */
783 ALL_PSYMTABS (objfile
, ps
)
785 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
787 s
= PSYMTAB_TO_SYMTAB(ps
);
788 bv
= BLOCKVECTOR (s
);
789 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
790 sym
= lookup_block_symbol (block
, name
, namespace);
793 /* This shouldn't be necessary, but as a last resort
794 * try looking in the statics even though the psymtab
795 * claimed the symbol was global. It's possible that
796 * the psymtab gets it wrong in some cases.
798 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
799 sym
= lookup_block_symbol (block
, name
, namespace);
801 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
802 %s may be an inlined function, or may be a template function\n\
803 (if a template, try specifying an instantiation: %s<type>).",
804 name
, ps
->filename
, name
, name
);
808 return fixup_symbol_section (sym
, objfile
);
812 /* Now search all static file-level symbols.
813 Not strictly correct, but more useful than an error.
814 Do the symtabs first, then check the psymtabs.
815 If a psymtab indicates the existence
816 of the desired name as a file-level static, then do psymtab-to-symtab
817 conversion on the fly and return the found symbol. */
819 ALL_SYMTABS (objfile
, s
)
821 bv
= BLOCKVECTOR (s
);
822 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
823 sym
= lookup_block_symbol (block
, name
, namespace);
829 return fixup_symbol_section (sym
, objfile
);
833 ALL_PSYMTABS (objfile
, ps
)
835 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
837 s
= PSYMTAB_TO_SYMTAB(ps
);
838 bv
= BLOCKVECTOR (s
);
839 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
840 sym
= lookup_block_symbol (block
, name
, namespace);
843 /* This shouldn't be necessary, but as a last resort
844 * try looking in the globals even though the psymtab
845 * claimed the symbol was static. It's possible that
846 * the psymtab gets it wrong in some cases.
848 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
849 sym
= lookup_block_symbol (block
, name
, namespace);
851 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
852 %s may be an inlined function, or may be a template function\n\
853 (if a template, try specifying an instantiation: %s<type>).",
854 name
, ps
->filename
, name
, name
);
858 return fixup_symbol_section (sym
, objfile
);
864 /* Check for the possibility of the symbol being a function or
865 a global variable that is stored in one of the minimal symbol tables.
866 The "minimal symbol table" is built from linker-supplied info.
868 RT: I moved this check to last, after the complete search of
869 the global (p)symtab's and static (p)symtab's. For HP-generated
870 symbol tables, this check was causing a premature exit from
871 lookup_symbol with NULL return, and thus messing up symbol lookups
872 of things like "c::f". It seems to me a check of the minimal
873 symbol table ought to be a last resort in any case. I'm vaguely
874 worried about the comment below which talks about FORTRAN routines "foo_"
875 though... is it saying we need to do the "minsym" check before
876 the static check in this case?
879 if (namespace == VAR_NAMESPACE
)
881 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
884 /* OK, we found a minimal symbol in spite of not
885 * finding any symbol. There are various possible
886 * explanations for this. One possibility is the symbol
887 * exists in code not compiled -g. Another possibility
888 * is that the 'psymtab' isn't doing its job.
889 * A third possibility, related to #2, is that we were confused
890 * by name-mangling. For instance, maybe the psymtab isn't
891 * doing its job because it only know about demangled
892 * names, but we were given a mangled name...
895 /* We first use the address in the msymbol to try to
896 * locate the appropriate symtab. Note that find_pc_symtab()
897 * has a side-effect of doing psymtab-to-symtab expansion,
898 * for the found symtab.
900 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
903 bv
= BLOCKVECTOR (s
);
904 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
905 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
907 /* We kept static functions in minimal symbol table as well as
908 in static scope. We want to find them in the symbol table. */
911 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
912 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
915 /* If we found one, return it */
922 /* If we get here with sym == 0, the symbol was
923 found in the minimal symbol table
924 but not in the symtab.
925 Fall through and return 0 to use the msymbol
926 definition of "foo_".
927 (Note that outer code generally follows up a call
928 to this routine with a call to lookup_minimal_symbol(),
929 so a 0 return means we'll just flow into that other routine).
931 This happens for Fortran "foo_" symbols,
932 which are "foo" in the symtab.
934 This can also happen if "asm" is used to make a
935 regular symbol but not a debugging symbol, e.g.
941 /* If the lookup-by-address fails, try repeating the
942 * entire lookup process with the symbol name from
943 * the msymbol (if different from the original symbol name).
945 else if (MSYMBOL_TYPE (msymbol
) != mst_text
946 && MSYMBOL_TYPE (msymbol
) != mst_file_text
947 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
949 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
950 namespace, is_a_field_of_this
, symtab
);
962 /* Look, in partial_symtab PST, for symbol NAME. Check the global
963 symbols if GLOBAL, the static symbols if not */
965 static struct partial_symbol
*
966 lookup_partial_symbol (pst
, name
, global
, namespace)
967 struct partial_symtab
*pst
;
970 namespace_enum
namespace;
972 struct partial_symbol
**start
, **psym
;
973 struct partial_symbol
**top
, **bottom
, **center
;
974 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
975 int do_linear_search
= 1;
983 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
984 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
986 if (global
) /* This means we can use a binary search. */
988 do_linear_search
= 0;
990 /* Binary search. This search is guaranteed to end with center
991 pointing at the earliest partial symbol with the correct
992 name. At that point *all* partial symbols with that name
993 will be checked against the correct namespace. */
996 top
= start
+ length
- 1;
999 center
= bottom
+ (top
- bottom
) / 2;
1000 if (!(center
< top
))
1002 if (!do_linear_search
1003 && (SYMBOL_LANGUAGE (*center
) == language_cplus
1004 || SYMBOL_LANGUAGE (*center
) == language_java
1007 do_linear_search
= 1;
1009 if (STRCMP (SYMBOL_NAME (*center
), name
) >= 0)
1015 bottom
= center
+ 1;
1018 if (!(top
== bottom
))
1020 while (STREQ (SYMBOL_NAME (*top
), name
))
1022 if (SYMBOL_NAMESPACE (*top
) == namespace)
1030 /* Can't use a binary search or else we found during the binary search that
1031 we should also do a linear search. */
1033 if (do_linear_search
)
1035 for (psym
= start
; psym
< start
+ length
; psym
++)
1037 if (namespace == SYMBOL_NAMESPACE (*psym
))
1039 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1050 /* Look up a type named NAME in the struct_namespace. The type returned
1051 must not be opaque -- i.e., must have at least one field defined
1053 This code was modelled on lookup_symbol -- the parts not relevant to looking
1054 up types were just left out. In particular it's assumed here that types
1055 are available in struct_namespace and only at file-static or global blocks. */
1059 lookup_transparent_type (name
)
1062 register struct symbol
*sym
;
1063 register struct symtab
*s
= NULL
;
1064 register struct partial_symtab
*ps
;
1065 struct blockvector
*bv
;
1066 register struct objfile
*objfile
;
1067 register struct block
*block
;
1068 register struct minimal_symbol
*msymbol
;
1070 /* Now search all the global symbols. Do the symtab's first, then
1071 check the psymtab's. If a psymtab indicates the existence
1072 of the desired name as a global, then do psymtab-to-symtab
1073 conversion on the fly and return the found symbol. */
1075 ALL_SYMTABS (objfile
, s
)
1077 bv
= BLOCKVECTOR (s
);
1078 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1079 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1080 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1082 return SYMBOL_TYPE (sym
);
1086 ALL_PSYMTABS (objfile
, ps
)
1088 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1090 s
= PSYMTAB_TO_SYMTAB(ps
);
1091 bv
= BLOCKVECTOR (s
);
1092 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1093 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1096 /* This shouldn't be necessary, but as a last resort
1097 * try looking in the statics even though the psymtab
1098 * claimed the symbol was global. It's possible that
1099 * the psymtab gets it wrong in some cases.
1101 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1102 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1104 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1105 %s may be an inlined function, or may be a template function\n\
1106 (if a template, try specifying an instantiation: %s<type>).",
1107 name
, ps
->filename
, name
, name
);
1109 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1110 return SYMBOL_TYPE (sym
);
1114 /* Now search the static file-level symbols.
1115 Not strictly correct, but more useful than an error.
1116 Do the symtab's first, then
1117 check the psymtab's. If a psymtab indicates the existence
1118 of the desired name as a file-level static, then do psymtab-to-symtab
1119 conversion on the fly and return the found symbol.
1122 ALL_SYMTABS (objfile
, s
)
1124 bv
= BLOCKVECTOR (s
);
1125 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1126 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1127 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1129 return SYMBOL_TYPE (sym
);
1133 ALL_PSYMTABS (objfile
, ps
)
1135 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1137 s
= PSYMTAB_TO_SYMTAB(ps
);
1138 bv
= BLOCKVECTOR (s
);
1139 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1140 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1143 /* This shouldn't be necessary, but as a last resort
1144 * try looking in the globals even though the psymtab
1145 * claimed the symbol was static. It's possible that
1146 * the psymtab gets it wrong in some cases.
1148 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1149 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1151 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1152 %s may be an inlined function, or may be a template function\n\
1153 (if a template, try specifying an instantiation: %s<type>).",
1154 name
, ps
->filename
, name
, name
);
1156 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1157 return SYMBOL_TYPE (sym
);
1160 return (struct type
*) 0;
1164 /* Find the psymtab containing main(). */
1165 /* FIXME: What about languages without main() or specially linked
1166 executables that have no main() ? */
1168 struct partial_symtab
*
1169 find_main_psymtab ()
1171 register struct partial_symtab
*pst
;
1172 register struct objfile
*objfile
;
1174 ALL_PSYMTABS (objfile
, pst
)
1176 if (lookup_partial_symbol (pst
, "main", 1, VAR_NAMESPACE
))
1184 /* Search BLOCK for symbol NAME in NAMESPACE.
1186 Note that if NAME is the demangled form of a C++ symbol, we will fail
1187 to find a match during the binary search of the non-encoded names, but
1188 for now we don't worry about the slight inefficiency of looking for
1189 a match we'll never find, since it will go pretty quick. Once the
1190 binary search terminates, we drop through and do a straight linear
1191 search on the symbols. Each symbol which is marked as being a C++
1192 symbol (language_cplus set) has both the encoded and non-encoded names
1193 tested for a match. */
1196 lookup_block_symbol (block
, name
, namespace)
1197 register const struct block
*block
;
1199 const namespace_enum
namespace;
1201 register int bot
, top
, inc
;
1202 register struct symbol
*sym
;
1203 register struct symbol
*sym_found
= NULL
;
1204 register int do_linear_search
= 1;
1206 /* If the blocks's symbols were sorted, start with a binary search. */
1208 if (BLOCK_SHOULD_SORT (block
))
1210 /* Reset the linear search flag so if the binary search fails, we
1211 won't do the linear search once unless we find some reason to
1212 do so, such as finding a C++ symbol during the binary search.
1213 Note that for C++ modules, ALL the symbols in a block should
1214 end up marked as C++ symbols. */
1216 do_linear_search
= 0;
1217 top
= BLOCK_NSYMS (block
);
1220 /* Advance BOT to not far before the first symbol whose name is NAME. */
1224 inc
= (top
- bot
+ 1);
1225 /* No need to keep binary searching for the last few bits worth. */
1230 inc
= (inc
>> 1) + bot
;
1231 sym
= BLOCK_SYM (block
, inc
);
1232 if (!do_linear_search
1233 && (SYMBOL_LANGUAGE (sym
) == language_cplus
1234 || SYMBOL_LANGUAGE (sym
) == language_java
1237 do_linear_search
= 1;
1239 if (SYMBOL_NAME (sym
)[0] < name
[0])
1243 else if (SYMBOL_NAME (sym
)[0] > name
[0])
1247 else if (STRCMP (SYMBOL_NAME (sym
), name
) < 0)
1257 /* Now scan forward until we run out of symbols, find one whose
1258 name is greater than NAME, or find one we want. If there is
1259 more than one symbol with the right name and namespace, we
1260 return the first one; I believe it is now impossible for us
1261 to encounter two symbols with the same name and namespace
1262 here, because blocks containing argument symbols are no
1265 top
= BLOCK_NSYMS (block
);
1268 sym
= BLOCK_SYM (block
, bot
);
1269 inc
= SYMBOL_NAME (sym
)[0] - name
[0];
1272 inc
= STRCMP (SYMBOL_NAME (sym
), name
);
1274 if (inc
== 0 && SYMBOL_NAMESPACE (sym
) == namespace)
1286 /* Here if block isn't sorted, or we fail to find a match during the
1287 binary search above. If during the binary search above, we find a
1288 symbol which is a C++ symbol, then we have re-enabled the linear
1289 search flag which was reset when starting the binary search.
1291 This loop is equivalent to the loop above, but hacked greatly for speed.
1293 Note that parameter symbols do not always show up last in the
1294 list; this loop makes sure to take anything else other than
1295 parameter symbols first; it only uses parameter symbols as a
1296 last resort. Note that this only takes up extra computation
1299 if (do_linear_search
)
1301 top
= BLOCK_NSYMS (block
);
1305 sym
= BLOCK_SYM (block
, bot
);
1306 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1307 SYMBOL_MATCHES_NAME (sym
, name
))
1309 /* If SYM has aliases, then use any alias that is active
1310 at the current PC. If no alias is active at the current
1311 PC, then use the main symbol.
1313 ?!? Is checking the current pc correct? Is this routine
1314 ever called to look up a symbol from another context? */
1315 if (SYMBOL_ALIASES (sym
))
1316 sym
= find_active_alias (sym
, read_pc ());
1319 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1320 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1321 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1322 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1323 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1324 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1332 return (sym_found
); /* Will be NULL if not found. */
1335 /* Given a main symbol SYM and ADDR, search through the alias
1336 list to determine if an alias is active at ADDR and return
1339 If no alias is active, then return SYM. */
1341 static struct symbol
*
1342 find_active_alias (sym
, addr
)
1346 struct range_list
*r
;
1347 struct alias_list
*aliases
;
1349 /* If we have aliases, check them first. */
1350 aliases
= SYMBOL_ALIASES (sym
);
1354 if (!SYMBOL_RANGES (aliases
->sym
))
1355 return aliases
->sym
;
1356 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1358 if (r
->start
<= addr
&& r
->end
> addr
)
1359 return aliases
->sym
;
1361 aliases
= aliases
->next
;
1364 /* Nothing found, return the main symbol. */
1369 /* Return the symbol for the function which contains a specified
1370 lexical block, described by a struct block BL. */
1376 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1377 bl
= BLOCK_SUPERBLOCK (bl
);
1379 return BLOCK_FUNCTION (bl
);
1382 /* Find the symtab associated with PC and SECTION. Look through the
1383 psymtabs and read in another symtab if necessary. */
1386 find_pc_sect_symtab (pc
, section
)
1390 register struct block
*b
;
1391 struct blockvector
*bv
;
1392 register struct symtab
*s
= NULL
;
1393 register struct symtab
*best_s
= NULL
;
1394 register struct partial_symtab
*ps
;
1395 register struct objfile
*objfile
;
1396 CORE_ADDR distance
= 0;
1398 /* Search all symtabs for the one whose file contains our address, and which
1399 is the smallest of all the ones containing the address. This is designed
1400 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1401 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1402 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1404 This happens for native ecoff format, where code from included files
1405 gets its own symtab. The symtab for the included file should have
1406 been read in already via the dependency mechanism.
1407 It might be swifter to create several symtabs with the same name
1408 like xcoff does (I'm not sure).
1410 It also happens for objfiles that have their functions reordered.
1411 For these, the symtab we are looking for is not necessarily read in. */
1413 ALL_SYMTABS (objfile
, s
)
1415 bv
= BLOCKVECTOR (s
);
1416 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1418 if (BLOCK_START (b
) <= pc
1419 #if defined(HPUXHPPA)
1420 && BLOCK_END (b
) >= pc
1422 && BLOCK_END (b
) > pc
1425 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1427 /* For an objfile that has its functions reordered,
1428 find_pc_psymtab will find the proper partial symbol table
1429 and we simply return its corresponding symtab. */
1430 /* In order to better support objfiles that contain both
1431 stabs and coff debugging info, we continue on if a psymtab
1433 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1435 ps
= find_pc_sect_psymtab (pc
, section
);
1437 return PSYMTAB_TO_SYMTAB (ps
);
1443 for (i
= 0; i
< b
->nsyms
; i
++)
1445 fixup_symbol_section (b
->sym
[i
], objfile
);
1446 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1450 continue; /* no symbol in this symtab matches section */
1452 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1461 ps
= find_pc_sect_psymtab (pc
, section
);
1465 /* Might want to error() here (in case symtab is corrupt and
1466 will cause a core dump), but maybe we can successfully
1467 continue, so let's not. */
1468 /* FIXME-32x64: assumes pc fits in a long */
1470 (Internal error: pc 0x%lx in read in psymtab, but not in symtab.)\n",
1471 (unsigned long) pc
);
1472 s
= PSYMTAB_TO_SYMTAB (ps
);
1477 /* Find the symtab associated with PC. Look through the psymtabs and
1478 read in another symtab if necessary. Backward compatibility, no section */
1484 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1490 /* Find the closest symbol value (of any sort -- function or variable)
1491 for a given address value. Slow but complete. (currently unused,
1492 mainly because it is too slow. We could fix it if each symtab and
1493 psymtab had contained in it the addresses ranges of each of its
1494 sections, which also would be required to make things like "info
1495 line *0x2345" cause psymtabs to be converted to symtabs). */
1498 find_addr_symbol (addr
, symtabp
, symaddrp
)
1500 struct symtab
**symtabp
;
1501 CORE_ADDR
*symaddrp
;
1503 struct symtab
*symtab
, *best_symtab
;
1504 struct objfile
*objfile
;
1505 register int bot
, top
;
1506 register struct symbol
*sym
;
1507 register CORE_ADDR sym_addr
;
1508 struct block
*block
;
1511 /* Info on best symbol seen so far */
1513 register CORE_ADDR best_sym_addr
= 0;
1514 struct symbol
*best_sym
= 0;
1516 /* FIXME -- we should pull in all the psymtabs, too! */
1517 ALL_SYMTABS (objfile
, symtab
)
1519 /* Search the global and static blocks in this symtab for
1520 the closest symbol-address to the desired address. */
1522 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1525 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1526 top
= BLOCK_NSYMS (block
);
1527 for (bot
= 0; bot
< top
; bot
++)
1529 sym
= BLOCK_SYM (block
, bot
);
1530 switch (SYMBOL_CLASS (sym
))
1534 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1538 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1539 /* An indirect symbol really lives at *sym_addr,
1540 * so an indirection needs to be done.
1541 * However, I am leaving this commented out because it's
1542 * expensive, and it's possible that symbolization
1543 * could be done without an active process (in
1544 * case this read_memory will fail). RT
1545 sym_addr = read_memory_unsigned_integer
1546 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1551 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1558 if (sym_addr
<= addr
)
1559 if (sym_addr
> best_sym_addr
)
1561 /* Quit if we found an exact match. */
1563 best_sym_addr
= sym_addr
;
1564 best_symtab
= symtab
;
1565 if (sym_addr
== addr
)
1574 *symtabp
= best_symtab
;
1576 *symaddrp
= best_sym_addr
;
1581 /* Find the source file and line number for a given PC value and section.
1582 Return a structure containing a symtab pointer, a line number,
1583 and a pc range for the entire source line.
1584 The value's .pc field is NOT the specified pc.
1585 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1586 use the line that ends there. Otherwise, in that case, the line
1587 that begins there is used. */
1589 /* The big complication here is that a line may start in one file, and end just
1590 before the start of another file. This usually occurs when you #include
1591 code in the middle of a subroutine. To properly find the end of a line's PC
1592 range, we must search all symtabs associated with this compilation unit, and
1593 find the one whose first PC is closer than that of the next line in this
1596 /* If it's worth the effort, we could be using a binary search. */
1598 struct symtab_and_line
1599 find_pc_sect_line (pc
, section
, notcurrent
)
1601 struct sec
*section
;
1605 register struct linetable
*l
;
1608 register struct linetable_entry
*item
;
1609 struct symtab_and_line val
;
1610 struct blockvector
*bv
;
1611 struct minimal_symbol
*msymbol
;
1612 struct minimal_symbol
*mfunsym
;
1614 /* Info on best line seen so far, and where it starts, and its file. */
1616 struct linetable_entry
*best
= NULL
;
1617 CORE_ADDR best_end
= 0;
1618 struct symtab
*best_symtab
= 0;
1620 /* Store here the first line number
1621 of a file which contains the line at the smallest pc after PC.
1622 If we don't find a line whose range contains PC,
1623 we will use a line one less than this,
1624 with a range from the start of that file to the first line's pc. */
1625 struct linetable_entry
*alt
= NULL
;
1626 struct symtab
*alt_symtab
= 0;
1628 /* Info on best line seen in this file. */
1630 struct linetable_entry
*prev
;
1632 /* If this pc is not from the current frame,
1633 it is the address of the end of a call instruction.
1634 Quite likely that is the start of the following statement.
1635 But what we want is the statement containing the instruction.
1636 Fudge the pc to make sure we get that. */
1638 INIT_SAL (&val
); /* initialize to zeroes */
1643 /* elz: added this because this function returned the wrong
1644 information if the pc belongs to a stub (import/export)
1645 to call a shlib function. This stub would be anywhere between
1646 two functions in the target, and the line info was erroneously
1647 taken to be the one of the line before the pc.
1649 /* RT: Further explanation:
1651 * We have stubs (trampolines) inserted between procedures.
1653 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1654 * exists in the main image.
1656 * In the minimal symbol table, we have a bunch of symbols
1657 * sorted by start address. The stubs are marked as "trampoline",
1658 * the others appear as text. E.g.:
1660 * Minimal symbol table for main image
1661 * main: code for main (text symbol)
1662 * shr1: stub (trampoline symbol)
1663 * foo: code for foo (text symbol)
1665 * Minimal symbol table for "shr1" image:
1667 * shr1: code for shr1 (text symbol)
1670 * So the code below is trying to detect if we are in the stub
1671 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1672 * and if found, do the symbolization from the real-code address
1673 * rather than the stub address.
1675 * Assumptions being made about the minimal symbol table:
1676 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1677 * if we're really in the trampoline. If we're beyond it (say
1678 * we're in "foo" in the above example), it'll have a closer
1679 * symbol (the "foo" text symbol for example) and will not
1680 * return the trampoline.
1681 * 2. lookup_minimal_symbol_text() will find a real text symbol
1682 * corresponding to the trampoline, and whose address will
1683 * be different than the trampoline address. I put in a sanity
1684 * check for the address being the same, to avoid an
1685 * infinite recursion.
1687 msymbol
= lookup_minimal_symbol_by_pc(pc
);
1688 if (msymbol
!= NULL
)
1689 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1691 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1692 if (mfunsym
== NULL
)
1693 /* I eliminated this warning since it is coming out
1694 * in the following situation:
1695 * gdb shmain // test program with shared libraries
1696 * (gdb) break shr1 // function in shared lib
1697 * Warning: In stub for ...
1698 * In the above situation, the shared lib is not loaded yet,
1699 * so of course we can't find the real func/line info,
1700 * but the "break" still works, and the warning is annoying.
1701 * So I commented out the warning. RT */
1702 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */;
1704 else if (SYMBOL_VALUE(mfunsym
) == SYMBOL_VALUE(msymbol
))
1705 /* Avoid infinite recursion */
1706 /* See above comment about why warning is commented out */
1707 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */;
1710 return find_pc_line( SYMBOL_VALUE (mfunsym
), 0);
1714 s
= find_pc_sect_symtab (pc
, section
);
1717 /* if no symbol information, return previous pc */
1724 bv
= BLOCKVECTOR (s
);
1726 /* Look at all the symtabs that share this blockvector.
1727 They all have the same apriori range, that we found was right;
1728 but they have different line tables. */
1730 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1732 /* Find the best line in this symtab. */
1739 /* I think len can be zero if the symtab lacks line numbers
1740 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1741 I'm not sure which, and maybe it depends on the symbol
1747 item
= l
->item
; /* Get first line info */
1749 /* Is this file's first line closer than the first lines of other files?
1750 If so, record this file, and its first line, as best alternate. */
1751 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1757 for (i
= 0; i
< len
; i
++, item
++)
1759 /* Leave prev pointing to the linetable entry for the last line
1760 that started at or before PC. */
1767 /* At this point, prev points at the line whose start addr is <= pc, and
1768 item points at the next line. If we ran off the end of the linetable
1769 (pc >= start of the last line), then prev == item. If pc < start of
1770 the first line, prev will not be set. */
1772 /* Is this file's best line closer than the best in the other files?
1773 If so, record this file, and its best line, as best so far. */
1775 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1779 /* If another line is in the linetable, and its PC is closer
1780 than the best_end we currently have, take it as best_end. */
1781 if (i
< len
&& (best_end
== 0 || best_end
> item
->pc
))
1782 best_end
= item
->pc
;
1789 { /* If we didn't find any line # info, just
1795 val
.symtab
= alt_symtab
;
1796 val
.line
= alt
->line
- 1;
1798 /* Don't return line 0, that means that we didn't find the line. */
1799 if (val
.line
== 0) ++val
.line
;
1801 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1807 val
.symtab
= best_symtab
;
1808 val
.line
= best
->line
;
1810 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1815 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1817 val
.section
= section
;
1821 /* Backward compatibility (no section) */
1823 struct symtab_and_line
1824 find_pc_line (pc
, notcurrent
)
1830 section
= find_pc_overlay (pc
);
1831 if (pc_in_unmapped_range (pc
, section
))
1832 pc
= overlay_mapped_address (pc
, section
);
1833 return find_pc_sect_line (pc
, section
, notcurrent
);
1837 static struct symtab
* find_line_symtab
PARAMS ((struct symtab
*, int,
1840 /* Find line number LINE in any symtab whose name is the same as
1843 If found, return the symtab that contains the linetable in which it was
1844 found, set *INDEX to the index in the linetable of the best entry
1845 found, and set *EXACT_MATCH nonzero if the value returned is an
1848 If not found, return NULL. */
1850 static struct symtab
*
1851 find_line_symtab (symtab
, line
, index
, exact_match
)
1852 struct symtab
*symtab
;
1859 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1863 struct linetable
*best_linetable
;
1864 struct symtab
*best_symtab
;
1866 /* First try looking it up in the given symtab. */
1867 best_linetable
= LINETABLE (symtab
);
1868 best_symtab
= symtab
;
1869 best_index
= find_line_common (best_linetable
, line
, &exact
);
1870 if (best_index
< 0 || !exact
)
1872 /* Didn't find an exact match. So we better keep looking for
1873 another symtab with the same name. In the case of xcoff,
1874 multiple csects for one source file (produced by IBM's FORTRAN
1875 compiler) produce multiple symtabs (this is unavoidable
1876 assuming csects can be at arbitrary places in memory and that
1877 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1879 /* BEST is the smallest linenumber > LINE so far seen,
1880 or 0 if none has been seen so far.
1881 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1884 struct objfile
*objfile
;
1887 if (best_index
>= 0)
1888 best
= best_linetable
->item
[best_index
].line
;
1892 ALL_SYMTABS (objfile
, s
)
1894 struct linetable
*l
;
1897 if (!STREQ (symtab
->filename
, s
->filename
))
1900 ind
= find_line_common (l
, line
, &exact
);
1910 if (best
== 0 || l
->item
[ind
].line
< best
)
1912 best
= l
->item
[ind
].line
;
1925 *index
= best_index
;
1927 *exact_match
= exact
;
1932 /* Set the PC value for a given source file and line number and return true.
1933 Returns zero for invalid line number (and sets the PC to 0).
1934 The source file is specified with a struct symtab. */
1937 find_line_pc (symtab
, line
, pc
)
1938 struct symtab
*symtab
;
1942 struct linetable
*l
;
1949 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1952 l
= LINETABLE (symtab
);
1953 *pc
= l
->item
[ind
].pc
;
1960 /* Find the range of pc values in a line.
1961 Store the starting pc of the line into *STARTPTR
1962 and the ending pc (start of next line) into *ENDPTR.
1963 Returns 1 to indicate success.
1964 Returns 0 if could not find the specified line. */
1967 find_line_pc_range (sal
, startptr
, endptr
)
1968 struct symtab_and_line sal
;
1969 CORE_ADDR
*startptr
, *endptr
;
1971 CORE_ADDR startaddr
;
1972 struct symtab_and_line found_sal
;
1975 if (startaddr
==0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1978 /* This whole function is based on address. For example, if line 10 has
1979 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1980 "info line *0x123" should say the line goes from 0x100 to 0x200
1981 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1982 This also insures that we never give a range like "starts at 0x134
1983 and ends at 0x12c". */
1985 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1986 if (found_sal
.line
!= sal
.line
)
1988 /* The specified line (sal) has zero bytes. */
1989 *startptr
= found_sal
.pc
;
1990 *endptr
= found_sal
.pc
;
1994 *startptr
= found_sal
.pc
;
1995 *endptr
= found_sal
.end
;
2000 /* Given a line table and a line number, return the index into the line
2001 table for the pc of the nearest line whose number is >= the specified one.
2002 Return -1 if none is found. The value is >= 0 if it is an index.
2004 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2007 find_line_common (l
, lineno
, exact_match
)
2008 register struct linetable
*l
;
2009 register int lineno
;
2015 /* BEST is the smallest linenumber > LINENO so far seen,
2016 or 0 if none has been seen so far.
2017 BEST_INDEX identifies the item for it. */
2019 int best_index
= -1;
2028 for (i
= 0; i
< len
; i
++)
2030 register struct linetable_entry
*item
= &(l
->item
[i
]);
2032 if (item
->line
== lineno
)
2034 /* Return the first (lowest address) entry which matches. */
2039 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2046 /* If we got here, we didn't get an exact match. */
2053 find_pc_line_pc_range (pc
, startptr
, endptr
)
2055 CORE_ADDR
*startptr
, *endptr
;
2057 struct symtab_and_line sal
;
2058 sal
= find_pc_line (pc
, 0);
2061 return sal
.symtab
!= 0;
2064 /* Given a function symbol SYM, find the symtab and line for the start
2066 If the argument FUNFIRSTLINE is nonzero, we want the first line
2067 of real code inside the function. */
2069 static struct symtab_and_line
2070 find_function_start_sal
PARAMS ((struct symbol
*sym
, int));
2072 static struct symtab_and_line
2073 find_function_start_sal (sym
, funfirstline
)
2078 struct symtab_and_line sal
;
2080 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2081 fixup_symbol_section (sym
, NULL
);
2083 { /* skip "first line" of function (which is actually its prologue) */
2084 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2085 /* If function is in an unmapped overlay, use its unmapped LMA
2086 address, so that SKIP_PROLOGUE has something unique to work on */
2087 if (section_is_overlay (section
) &&
2088 !section_is_mapped (section
))
2089 pc
= overlay_unmapped_address (pc
, section
);
2091 pc
+= FUNCTION_START_OFFSET
;
2094 /* For overlays, map pc back into its mapped VMA range */
2095 pc
= overlay_mapped_address (pc
, section
);
2097 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2099 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2100 /* Convex: no need to suppress code on first line, if any */
2103 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2104 line is still part of the same function. */
2106 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2107 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2109 /* First pc of next line */
2111 /* Recalculate the line number (might not be N+1). */
2112 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2120 /* If P is of the form "operator[ \t]+..." where `...' is
2121 some legitimate operator text, return a pointer to the
2122 beginning of the substring of the operator text.
2123 Otherwise, return "". */
2125 operator_chars (p
, end
)
2130 if (strncmp (p
, "operator", 8))
2134 /* Don't get faked out by `operator' being part of a longer
2136 if (isalpha(*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2139 /* Allow some whitespace between `operator' and the operator symbol. */
2140 while (*p
== ' ' || *p
== '\t')
2143 /* Recognize 'operator TYPENAME'. */
2145 if (isalpha(*p
) || *p
== '_' || *p
== '$')
2147 register char *q
= p
+1;
2148 while (isalnum(*q
) || *q
== '_' || *q
== '$')
2173 if (p
[1] == '=' || p
[1] == p
[0])
2184 error ("`operator ()' must be specified without whitespace in `()'");
2189 error ("`operator ?:' must be specified without whitespace in `?:'");
2194 error ("`operator []' must be specified without whitespace in `[]'");
2198 error ("`operator %s' not supported", p
);
2205 /* Return the number of methods described for TYPE, including the
2206 methods from types it derives from. This can't be done in the symbol
2207 reader because the type of the baseclass might still be stubbed
2208 when the definition of the derived class is parsed. */
2210 static int total_number_of_methods
PARAMS ((struct type
*type
));
2213 total_number_of_methods (type
)
2219 CHECK_TYPEDEF (type
);
2220 if (TYPE_CPLUS_SPECIFIC (type
) == NULL
)
2222 count
= TYPE_NFN_FIELDS_TOTAL (type
);
2224 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2225 count
+= total_number_of_methods (TYPE_BASECLASS (type
, n
));
2230 /* Recursive helper function for decode_line_1.
2231 Look for methods named NAME in type T.
2232 Return number of matches.
2233 Put matches in SYM_ARR, which should have been allocated with
2234 a size of total_number_of_methods (T) * sizeof (struct symbol *).
2235 Note that this function is g++ specific. */
2238 find_methods (t
, name
, sym_arr
)
2241 struct symbol
**sym_arr
;
2245 struct symbol
*sym_class
;
2246 char *class_name
= type_name_no_tag (t
);
2248 /* Ignore this class if it doesn't have a name. This is ugly, but
2249 unless we figure out how to get the physname without the name of
2250 the class, then the loop can't do any good. */
2252 && (sym_class
= lookup_symbol (class_name
,
2253 (struct block
*)NULL
,
2256 (struct symtab
**)NULL
)))
2260 /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */
2261 t
= SYMBOL_TYPE (sym_class
);
2263 /* Loop over each method name. At this level, all overloads of a name
2264 are counted as a single name. There is an inner loop which loops over
2267 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
2268 method_counter
>= 0;
2272 char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
2273 char dem_opname
[64];
2275 if (strncmp (method_name
, "__", 2) == 0 ||
2276 strncmp (method_name
, "op", 2) == 0 ||
2277 strncmp (method_name
, "type", 4) == 0)
2279 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
2280 method_name
= dem_opname
;
2281 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
2282 method_name
= dem_opname
;
2285 if (STREQ (name
, method_name
))
2286 /* Find all the overloaded methods with that name. */
2287 for (field_counter
= TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
2294 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
2296 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
2300 tmp_name
= gdb_mangle_name (t
,
2303 phys_name
= alloca (strlen (tmp_name
) + 1);
2304 strcpy (phys_name
, tmp_name
);
2308 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
2310 /* Destructor is handled by caller, dont add it to the list */
2311 if (DESTRUCTOR_PREFIX_P (phys_name
))
2314 sym_arr
[i1
] = lookup_symbol (phys_name
,
2315 NULL
, VAR_NAMESPACE
,
2317 (struct symtab
**) NULL
);
2322 /* This error message gets printed, but the method
2323 still seems to be found
2324 fputs_filtered("(Cannot find method ", gdb_stdout);
2325 fprintf_symbol_filtered (gdb_stdout, phys_name,
2327 DMGL_PARAMS | DMGL_ANSI);
2328 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
2335 /* Only search baseclasses if there is no match yet, since names in
2336 derived classes override those in baseclasses.
2338 FIXME: The above is not true; it is only true of member functions
2339 if they have the same number of arguments (??? - section 13.1 of the
2340 ARM says the function members are not in the same scope but doesn't
2341 really spell out the rules in a way I understand. In any case, if
2342 the number of arguments differ this is a case in which we can overload
2343 rather than hiding without any problem, and gcc 2.4.5 does overload
2344 rather than hiding in this case). */
2347 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
2348 i1
+= find_methods (TYPE_BASECLASS (t
, ibase
), name
, sym_arr
+ i1
);
2353 /* Helper function for decode_line_1.
2354 Build a canonical line spec in CANONICAL if it is non-NULL and if
2355 the SAL has a symtab.
2356 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
2357 If SYMNAME is NULL the line number from SAL is used and the canonical
2358 line spec is `filename:linenum'. */
2361 build_canonical_line_spec (sal
, symname
, canonical
)
2362 struct symtab_and_line
*sal
;
2366 char **canonical_arr
;
2367 char *canonical_name
;
2369 struct symtab
*s
= sal
->symtab
;
2371 if (s
== (struct symtab
*)NULL
2372 || s
->filename
== (char *)NULL
2373 || canonical
== (char ***)NULL
)
2376 canonical_arr
= (char **) xmalloc (sizeof (char *));
2377 *canonical
= canonical_arr
;
2379 filename
= s
->filename
;
2380 if (symname
!= NULL
)
2382 canonical_name
= xmalloc (strlen (filename
) + strlen (symname
) + 2);
2383 sprintf (canonical_name
, "%s:%s", filename
, symname
);
2387 canonical_name
= xmalloc (strlen (filename
) + 30);
2388 sprintf (canonical_name
, "%s:%d", filename
, sal
->line
);
2390 canonical_arr
[0] = canonical_name
;
2393 /* Parse a string that specifies a line number.
2394 Pass the address of a char * variable; that variable will be
2395 advanced over the characters actually parsed.
2399 LINENUM -- that line number in current file. PC returned is 0.
2400 FILE:LINENUM -- that line in that file. PC returned is 0.
2401 FUNCTION -- line number of openbrace of that function.
2402 PC returned is the start of the function.
2403 VARIABLE -- line number of definition of that variable.
2405 FILE:FUNCTION -- likewise, but prefer functions in that file.
2406 *EXPR -- line in which address EXPR appears.
2408 FUNCTION may be an undebuggable function found in minimal symbol table.
2410 If the argument FUNFIRSTLINE is nonzero, we want the first line
2411 of real code inside a function when a function is specified, and it is
2412 not OK to specify a variable or type to get its line number.
2414 DEFAULT_SYMTAB specifies the file to use if none is specified.
2415 It defaults to current_source_symtab.
2416 DEFAULT_LINE specifies the line number to use for relative
2417 line numbers (that start with signs). Defaults to current_source_line.
2418 If CANONICAL is non-NULL, store an array of strings containing the canonical
2419 line specs there if necessary. Currently overloaded member functions and
2420 line numbers or static functions without a filename yield a canonical
2421 line spec. The array and the line spec strings are allocated on the heap,
2422 it is the callers responsibility to free them.
2424 Note that it is possible to return zero for the symtab
2425 if no file is validly specified. Callers must check that.
2426 Also, the line number returned may be invalid. */
2428 /* We allow single quotes in various places. This is a hideous
2429 kludge, which exists because the completer can't yet deal with the
2430 lack of single quotes. FIXME: write a linespec_completer which we
2431 can use as appropriate instead of make_symbol_completion_list. */
2433 struct symtabs_and_lines
2434 decode_line_1 (argptr
, funfirstline
, default_symtab
, default_line
, canonical
)
2437 struct symtab
*default_symtab
;
2441 struct symtabs_and_lines values
;
2442 #ifdef HPPA_COMPILER_BUG
2443 /* FIXME: The native HP 9000/700 compiler has a bug which appears
2444 when optimizing this file with target i960-vxworks. I haven't
2445 been able to construct a simple test case. The problem is that
2446 in the second call to SKIP_PROLOGUE below, the compiler somehow
2447 does not realize that the statement val = find_pc_line (...) will
2448 change the values of the fields of val. It extracts the elements
2449 into registers at the top of the block, and does not update the
2450 registers after the call to find_pc_line. You can check this by
2451 inserting a printf at the end of find_pc_line to show what values
2452 it is returning for val.pc and val.end and another printf after
2453 the call to see what values the function actually got (remember,
2454 this is compiling with cc -O, with this patch removed). You can
2455 also examine the assembly listing: search for the second call to
2456 skip_prologue; the LDO statement before the next call to
2457 find_pc_line loads the address of the structure which
2458 find_pc_line will return; if there is a LDW just before the LDO,
2459 which fetches an element of the structure, then the compiler
2462 Setting val to volatile avoids the problem. We must undef
2463 volatile, because the HPPA native compiler does not define
2464 __STDC__, although it does understand volatile, and so volatile
2465 will have been defined away in defs.h. */
2467 volatile struct symtab_and_line val
;
2468 #define volatile /*nothing*/
2470 struct symtab_and_line val
;
2472 register char *p
, *p1
;
2473 char *q
, *pp
, *ii
, *p2
;
2477 register struct symtab
*s
;
2479 register struct symbol
*sym
;
2480 /* The symtab that SYM was found in. */
2481 struct symtab
*sym_symtab
;
2483 register CORE_ADDR pc
;
2484 register struct minimal_symbol
*msymbol
;
2486 struct symbol
*sym_class
;
2491 struct symbol
**sym_arr
;
2493 char *saved_arg
= *argptr
;
2494 extern char *gdb_completer_quote_characters
;
2496 INIT_SAL (&val
); /* initialize to zeroes */
2498 /* Defaults have defaults. */
2500 if (default_symtab
== 0)
2502 default_symtab
= current_source_symtab
;
2503 default_line
= current_source_line
;
2506 /* See if arg is *PC */
2508 if (**argptr
== '*')
2511 pc
= parse_and_eval_address_1 (argptr
);
2513 values
.sals
= (struct symtab_and_line
*)
2514 xmalloc (sizeof (struct symtab_and_line
));
2517 values
.sals
[0] = find_pc_line (pc
, 0);
2518 values
.sals
[0].pc
= pc
;
2519 values
.sals
[0].section
= find_pc_overlay (pc
);
2524 /* 'has_if' is for the syntax:
2525 * (gdb) break foo if (a==b)
2527 if ((ii
= strstr(*argptr
, " if ")) != NULL
||
2528 (ii
= strstr(*argptr
, "\tif ")) != NULL
||
2529 (ii
= strstr(*argptr
, " if\t")) != NULL
||
2530 (ii
= strstr(*argptr
, "\tif\t")) != NULL
||
2531 (ii
= strstr(*argptr
, " if(")) != NULL
||
2532 (ii
= strstr(*argptr
, "\tif( ")) != NULL
)
2534 /* Temporarily zap out "if (condition)" to not
2535 * confuse the parenthesis-checking code below.
2536 * This is undone below. Do not change ii!!
2542 /* Set various flags.
2543 * 'has_parens' is important for overload checking, where
2544 * we allow things like:
2545 * (gdb) break c::f(int)
2548 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2550 is_quoted
= (**argptr
2551 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
);
2553 has_parens
= ((pp
= strchr (*argptr
, '(')) != NULL
2554 && (pp
= strchr (pp
, ')')) != NULL
);
2556 /* Now that we're safely past the has_parens check,
2557 * put back " if (condition)" so outer layers can see it
2562 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2563 /* May also be CLASS::MEMBER, or NAMESPACE::NAME */
2564 /* Look for ':', but ignore inside of <> */
2567 for (p
= *argptr
; *p
; p
++)
2571 char * temp_end
= find_template_name_end (p
);
2573 error ("malformed template specification in command");
2576 if (p
[0] == ':' || p
[0] == ' ' || p
[0] == '\t' || !*p
)
2578 if (p
[0] == '.' && strchr (p
, ':') == NULL
) /* Java qualified method. */
2580 /* Find the *last* '.', since the others are package qualifiers. */
2581 for (p1
= p
; *p1
; p1
++)
2589 while (p
[0] == ' ' || p
[0] == '\t') p
++;
2591 if ((p
[0] == ':' || p
[0] == '.') && !has_parens
)
2595 if (is_quoted
) *argptr
= *argptr
+1;
2596 if (p
[0] == '.' || p
[1] ==':')
2599 char * saved_arg2
= *argptr
;
2601 /* First check for "global" namespace specification,
2602 of the form "::foo". If found, skip over the colons
2603 and jump to normal symbol processing */
2604 if ((*argptr
== p
) || (p
[-1] == ' ') || (p
[-1] == '\t'))
2607 /* We have what looks like a class or namespace
2608 scope specification (A::B), possibly with many
2609 levels of namespaces or classes (A::B::C::D).
2611 Some versions of the HP ANSI C++ compiler (as also possibly
2612 other compilers) generate class/function/member names with
2613 embedded double-colons if they are inside namespaces. To
2614 handle this, we loop a few times, considering larger and
2615 larger prefixes of the string as though they were single
2616 symbols. So, if the initially supplied string is
2617 A::B::C::D::foo, we have to look up "A", then "A::B",
2618 then "A::B::C", then "A::B::C::D", and finally
2619 "A::B::C::D::foo" as single, monolithic symbols, because
2620 A, B, C or D may be namespaces.
2622 Note that namespaces can nest only inside other
2623 namespaces, and not inside classes. So we need only
2624 consider *prefixes* of the string; there is no need to look up
2625 "B::C" separately as a symbol in the previous example. */
2627 p2
= p
; /* save for restart */
2630 /* Extract the class name. */
2632 while (p
!= *argptr
&& p
[-1] == ' ') --p
;
2633 copy
= (char *) alloca (p
- *argptr
+ 1);
2634 memcpy (copy
, *argptr
, p
- *argptr
);
2635 copy
[p
- *argptr
] = 0;
2637 /* Discard the class name from the arg. */
2638 p
= p1
+ (p1
[0] == ':' ? 2 : 1);
2639 while (*p
== ' ' || *p
== '\t') p
++;
2642 sym_class
= lookup_symbol (copy
, 0, STRUCT_NAMESPACE
, 0,
2643 (struct symtab
**)NULL
);
2646 (t
= check_typedef (SYMBOL_TYPE (sym_class
)),
2647 (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2648 || TYPE_CODE (t
) == TYPE_CODE_UNION
)))
2650 /* Arg token is not digits => try it as a function name
2651 Find the next token(everything up to end or next blank). */
2653 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
)
2655 p
= skip_quoted(*argptr
);
2656 *argptr
= *argptr
+ 1;
2661 while (*p
&& *p
!=' ' && *p
!='\t' && *p
!=',' && *p
!=':') p
++;
2664 q = operator_chars (*argptr, &q1);
2668 char *tmp = alloca (q1 - q + 1);
2669 memcpy (tmp, q, q1 - q);
2671 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
2675 printf_filtered ("no mangling for \"%s\"\n", tmp);
2676 cplusplus_hint (saved_arg);
2677 return_to_top_level (RETURN_ERROR);
2679 copy = (char*) alloca (3 + strlen(opname));
2680 sprintf (copy, "__%s", opname);
2686 copy
= (char *) alloca (p
- *argptr
+ 1 );
2687 memcpy (copy
, *argptr
, p
- *argptr
);
2688 copy
[p
- *argptr
] = '\0';
2690 && copy
[p
- *argptr
- 1]
2691 && strchr (gdb_completer_quote_characters
,
2692 copy
[p
- *argptr
- 1]) != NULL
)
2693 copy
[p
- *argptr
- 1] = '\0';
2696 /* no line number may be specified */
2697 while (*p
== ' ' || *p
== '\t') p
++;
2701 i1
= 0; /* counter for the symbol array */
2702 sym_arr
= (struct symbol
**) alloca(total_number_of_methods (t
)
2703 * sizeof(struct symbol
*));
2705 if (destructor_name_p (copy
, t
))
2707 /* Destructors are a special case. */
2708 int m_index
, f_index
;
2710 if (get_destructor_fn_field (t
, &m_index
, &f_index
))
2712 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (t
, m_index
);
2715 lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f
, f_index
),
2716 NULL
, VAR_NAMESPACE
, (int *) NULL
,
2717 (struct symtab
**)NULL
);
2723 i1
= find_methods (t
, copy
, sym_arr
);
2726 /* There is exactly one field with that name. */
2729 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2731 values
.sals
= (struct symtab_and_line
*)
2732 xmalloc (sizeof (struct symtab_and_line
));
2734 values
.sals
[0] = find_function_start_sal (sym
,
2745 /* There is more than one field with that name
2746 (overloaded). Ask the user which one to use. */
2747 return decode_line_2 (sym_arr
, i1
, funfirstline
, canonical
);
2753 if (OPNAME_PREFIX_P (copy
))
2755 tmp
= (char *)alloca (strlen (copy
+3) + 9);
2756 strcpy (tmp
, "operator ");
2757 strcat (tmp
, copy
+3);
2764 ("the class `%s' does not have destructor defined\n",
2765 SYMBOL_SOURCE_NAME(sym_class
));
2768 ("the class %s does not have any method named %s\n",
2769 SYMBOL_SOURCE_NAME(sym_class
), tmp
);
2770 cplusplus_hint (saved_arg
);
2771 return_to_top_level (RETURN_ERROR
);
2775 /* Move pointer up to next possible class/namespace token */
2776 p
= p2
+ 1; /* restart with old value +1 */
2777 /* Move pointer ahead to next double-colon */
2778 while (*p
&& (p
[0] != ' ') && (p
[0] != '\t') && (p
[0] != '\'')) {
2780 temp_end
= find_template_name_end (p
);
2782 error ("malformed template specification in command");
2785 else if ((p
[0] == ':') && (p
[1] == ':'))
2786 break; /* found double-colon */
2792 break; /* out of the while (1) */
2794 p2
= p
; /* save restart for next time around */
2795 *argptr
= saved_arg2
; /* restore argptr */
2798 /* Last chance attempt -- check entire name as a symbol */
2799 /* Use "copy" in preparation for jumping out of this block,
2800 to be consistent with usage following the jump target */
2801 copy
= (char *) alloca (p
- saved_arg2
+ 1);
2802 memcpy (copy
, saved_arg2
, p
- saved_arg2
);
2803 /* Note: if is_quoted should be true, we snuff out quote here anyway */
2804 copy
[p
-saved_arg2
] = '\000';
2805 /* Set argptr to skip over the name */
2806 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2807 /* Look up entire name */
2808 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2809 s
= (struct symtab
*) 0;
2810 /* Prepare to jump: restore the " if (condition)" so outer layers see it */
2813 /* Symbol was found --> jump to normal symbol processing.
2814 Code following "symbol_found" expects "copy" to have the
2815 symbol name, "sym" to have the symbol pointer, "s" to be
2816 a specified file's symtab, and sym_symtab to be the symbol's
2818 /* By jumping there we avoid falling through the FILE:LINE and
2819 FILE:FUNC processing stuff below */
2823 /* Couldn't find any interpretation as classes/namespaces, so give up */
2825 /* The quotes are important if copy is empty. */
2827 ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy
);
2828 cplusplus_hint (saved_arg
);
2829 return_to_top_level (RETURN_ERROR
);
2834 /* Extract the file name. */
2836 while (p
!= *argptr
&& p
[-1] == ' ') --p
;
2837 copy
= (char *) alloca (p
- *argptr
+ 1);
2838 memcpy (copy
, *argptr
, p
- *argptr
);
2839 copy
[p
- *argptr
] = 0;
2841 /* Find that file's data. */
2842 s
= lookup_symtab (copy
);
2845 if (!have_full_symbols () && !have_partial_symbols ())
2846 error (no_symtab_msg
);
2847 error ("No source file named %s.", copy
);
2850 /* Discard the file name from the arg. */
2852 while (*p
== ' ' || *p
== '\t') p
++;
2856 /* No one really seems to know why this was added. It certainly
2857 breaks the command line, though, whenever the passed
2858 name is of the form ClassName::Method. This bit of code
2859 singles out the class name, and if funfirstline is set (for
2860 example, you are setting a breakpoint at this function),
2861 you get an error. This did not occur with earlier
2862 verions, so I am ifdef'ing this out. 3/29/99 */
2864 /* Check if what we have till now is a symbol name */
2866 /* We may be looking at a template instantiation such
2867 as "foo<int>". Check here whether we know about it,
2868 instead of falling through to the code below which
2869 handles ordinary function names, because that code
2870 doesn't like seeing '<' and '>' in a name -- the
2871 skip_quoted call doesn't go past them. So see if we
2872 can figure it out right now. */
2874 copy
= (char *) alloca (p
- *argptr
+ 1);
2875 memcpy (copy
, *argptr
, p
- *argptr
);
2876 copy
[p
- *argptr
] = '\000';
2877 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2879 /* Yes, we have a symbol; jump to symbol processing */
2880 /* Code after symbol_found expects S, SYM_SYMTAB, SYM,
2881 and COPY to be set correctly */
2884 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2885 s
= (struct symtab
*) 0;
2888 /* Otherwise fall out from here and go to file/line spec
2893 /* S is specified file's symtab, or 0 if no file specified.
2894 arg no longer contains the file name. */
2896 /* Check whether arg is all digits (and sign) */
2899 if (*q
== '-' || *q
== '+') q
++;
2900 while (*q
>= '0' && *q
<= '9')
2903 if (q
!= *argptr
&& (*q
== 0 || *q
== ' ' || *q
== '\t' || *q
== ','))
2905 /* We found a token consisting of all digits -- at least one digit. */
2906 enum sign
{none
, plus
, minus
} sign
= none
;
2908 /* We might need a canonical line spec if no file was specified. */
2909 int need_canonical
= (s
== 0) ? 1 : 0;
2911 /* This is where we need to make sure that we have good defaults.
2912 We must guarantee that this section of code is never executed
2913 when we are called with just a function name, since
2914 select_source_symtab calls us with such an argument */
2916 if (s
== 0 && default_symtab
== 0)
2918 select_source_symtab (0);
2919 default_symtab
= current_source_symtab
;
2920 default_line
= current_source_line
;
2923 if (**argptr
== '+')
2924 sign
= plus
, (*argptr
)++;
2925 else if (**argptr
== '-')
2926 sign
= minus
, (*argptr
)++;
2927 val
.line
= atoi (*argptr
);
2934 val
.line
= default_line
+ val
.line
;
2940 val
.line
= default_line
- val
.line
;
2945 break; /* No need to adjust val.line. */
2948 while (*q
== ' ' || *q
== '\t') q
++;
2953 /* It is possible that this source file has more than one symtab,
2954 and that the new line number specification has moved us from the
2955 default (in s) to a new one. */
2956 val
.symtab
= find_line_symtab (s
, val
.line
, NULL
, NULL
);
2957 if (val
.symtab
== 0)
2961 values
.sals
= (struct symtab_and_line
*)
2962 xmalloc (sizeof (struct symtab_and_line
));
2963 values
.sals
[0] = val
;
2966 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
2970 /* Arg token is not digits => try it as a variable name
2971 Find the next token (everything up to end or next whitespace). */
2973 if (**argptr
== '$') /* May be a convenience variable */
2974 p
= skip_quoted (*argptr
+ (((*argptr
)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */
2977 p
= skip_quoted (*argptr
);
2979 error ("Unmatched single quote.");
2981 else if (has_parens
)
2987 p
= skip_quoted(*argptr
);
2990 copy
= (char *) alloca (p
- *argptr
+ 1);
2991 memcpy (copy
, *argptr
, p
- *argptr
);
2992 copy
[p
- *argptr
] = '\0';
2995 && copy
[0] == copy
[p
- *argptr
- 1]
2996 && strchr (gdb_completer_quote_characters
, copy
[0]) != NULL
)
2998 copy
[p
- *argptr
- 1] = '\0';
3001 while (*p
== ' ' || *p
== '\t') p
++;
3004 /* If it starts with $: may be a legitimate variable or routine name
3005 (e.g. HP-UX millicode routines such as $$dyncall), or it may
3006 be history value, or it may be a convenience variable */
3012 int need_canonical
= 0;
3014 p
= (copy
[1] == '$') ? copy
+ 2 : copy
+ 1;
3015 while (*p
>= '0' && *p
<= '9')
3017 if (!*p
) /* reached end of token without hitting non-digit */
3019 /* We have a value history reference */
3020 sscanf ((copy
[1] == '$') ? copy
+ 2 : copy
+ 1, "%d", &index
);
3021 valx
= access_value_history ((copy
[1] == '$') ? -index
: index
);
3022 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3023 error ("History values used in line specs must have integer values.");
3027 /* Not all digits -- may be user variable/function or a
3028 convenience variable */
3030 /* Look up entire name as a symbol first */
3031 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
3032 s
= (struct symtab
*) 0;
3034 /* Symbol was found --> jump to normal symbol processing.
3035 Code following "symbol_found" expects "copy" to have the
3036 symbol name, "sym" to have the symbol pointer, "s" to be
3037 a specified file's symtab, and sym_symtab to be the symbol's
3042 /* If symbol was not found, look in minimal symbol tables */
3043 msymbol
= lookup_minimal_symbol (copy
, 0, 0);
3044 /* Min symbol was found --> jump to minsym processing. */
3046 goto minimal_symbol_found
;
3048 /* Not a user variable or function -- must be convenience variable */
3049 need_canonical
= (s
== 0) ? 1 : 0;
3050 valx
= value_of_internalvar (lookup_internalvar (copy
+ 1));
3051 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3052 error ("Convenience variables used in line specs must have integer values.");
3055 /* Either history value or convenience value from above, in valx */
3056 val
.symtab
= s
? s
: default_symtab
;
3057 val
.line
= value_as_long (valx
);
3060 values
.sals
= (struct symtab_and_line
*)xmalloc (sizeof val
);
3061 values
.sals
[0] = val
;
3065 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3071 /* Look up that token as a variable.
3072 If file specified, use that file's per-file block to start with. */
3074 sym
= lookup_symbol (copy
,
3075 (s
? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
3076 : get_selected_block ()),
3077 VAR_NAMESPACE
, 0, &sym_symtab
);
3079 symbol_found
: /* We also jump here from inside the C++ class/namespace
3080 code on finding a symbol of the form "A::B::C" */
3084 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3086 /* Arg is the name of a function */
3087 values
.sals
= (struct symtab_and_line
*)
3088 xmalloc (sizeof (struct symtab_and_line
));
3089 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
3092 /* Don't use the SYMBOL_LINE; if used at all it points to
3093 the line containing the parameters or thereabouts, not
3094 the first line of code. */
3096 /* We might need a canonical line spec if it is a static
3100 struct blockvector
*bv
= BLOCKVECTOR (sym_symtab
);
3101 struct block
*b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
3102 if (lookup_block_symbol (b
, copy
, VAR_NAMESPACE
) != NULL
)
3103 build_canonical_line_spec (values
.sals
, copy
, canonical
);
3110 error ("\"%s\" is not a function", copy
);
3111 else if (SYMBOL_LINE (sym
) != 0)
3113 /* We know its line number. */
3114 values
.sals
= (struct symtab_and_line
*)
3115 xmalloc (sizeof (struct symtab_and_line
));
3117 memset (&values
.sals
[0], 0, sizeof (values
.sals
[0]));
3118 values
.sals
[0].symtab
= sym_symtab
;
3119 values
.sals
[0].line
= SYMBOL_LINE (sym
);
3123 /* This can happen if it is compiled with a compiler which doesn't
3124 put out line numbers for variables. */
3125 /* FIXME: Shouldn't we just set .line and .symtab to zero
3126 and return? For example, "info line foo" could print
3128 error ("Line number not known for symbol \"%s\"", copy
);
3132 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
3134 minimal_symbol_found
: /* We also jump here from the case for variables
3135 that begin with '$' */
3137 if (msymbol
!= NULL
)
3139 values
.sals
= (struct symtab_and_line
*)
3140 xmalloc (sizeof (struct symtab_and_line
));
3141 values
.sals
[0] = find_pc_sect_line ( SYMBOL_VALUE_ADDRESS (msymbol
),
3142 (struct sec
*)0,0 );
3143 values
.sals
[0].section
= SYMBOL_BFD_SECTION (msymbol
);
3146 values
.sals
[0].pc
+= FUNCTION_START_OFFSET
;
3147 SKIP_PROLOGUE (values
.sals
[0].pc
);
3153 if (!have_full_symbols () &&
3154 !have_partial_symbols () && !have_minimal_symbols ())
3155 error (no_symtab_msg
);
3157 error ("Function \"%s\" not defined.", copy
);
3158 return values
; /* for lint */
3161 struct symtabs_and_lines
3162 decode_line_spec (string
, funfirstline
)
3166 struct symtabs_and_lines sals
;
3168 error ("Empty line specification.");
3169 sals
= decode_line_1 (&string
, funfirstline
,
3170 current_source_symtab
, current_source_line
,
3173 error ("Junk at end of line specification: %s", string
);
3177 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
3178 operate on (ask user if necessary).
3179 If CANONICAL is non-NULL return a corresponding array of mangled names
3180 as canonical line specs there. */
3182 static struct symtabs_and_lines
3183 decode_line_2 (sym_arr
, nelts
, funfirstline
, canonical
)
3184 struct symbol
*sym_arr
[];
3189 struct symtabs_and_lines values
, return_values
;
3194 struct cleanup
*old_chain
;
3195 char **canonical_arr
= (char **)NULL
;
3197 values
.sals
= (struct symtab_and_line
*)
3198 alloca (nelts
* sizeof(struct symtab_and_line
));
3199 return_values
.sals
= (struct symtab_and_line
*)
3200 xmalloc (nelts
* sizeof(struct symtab_and_line
));
3201 old_chain
= make_cleanup (free
, return_values
.sals
);
3205 canonical_arr
= (char **) xmalloc (nelts
* sizeof (char *));
3206 make_cleanup (free
, canonical_arr
);
3207 memset (canonical_arr
, 0, nelts
* sizeof (char *));
3208 *canonical
= canonical_arr
;
3212 printf_unfiltered("[0] cancel\n[1] all\n");
3215 INIT_SAL (&return_values
.sals
[i
]); /* initialize to zeroes */
3216 INIT_SAL (&values
.sals
[i
]);
3217 if (sym_arr
[i
] && SYMBOL_CLASS (sym_arr
[i
]) == LOC_BLOCK
)
3219 values
.sals
[i
] = find_function_start_sal (sym_arr
[i
], funfirstline
);
3220 printf_unfiltered ("[%d] %s at %s:%d\n",
3222 SYMBOL_SOURCE_NAME (sym_arr
[i
]),
3223 values
.sals
[i
].symtab
->filename
,
3224 values
.sals
[i
].line
);
3227 printf_unfiltered ("?HERE\n");
3231 if ((prompt
= getenv ("PS2")) == NULL
)
3235 args
= command_line_input (prompt
, 0, "overload-choice");
3237 if (args
== 0 || *args
== 0)
3238 error_no_arg ("one or more choice numbers");
3246 while (*arg1
>= '0' && *arg1
<= '9') arg1
++;
3247 if (*arg1
&& *arg1
!= ' ' && *arg1
!= '\t')
3248 error ("Arguments must be choice numbers.");
3253 error ("cancelled");
3258 for (i
= 0; i
< nelts
; i
++)
3260 if (canonical_arr
[i
] == NULL
)
3262 symname
= SYMBOL_NAME (sym_arr
[i
]);
3263 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3267 memcpy (return_values
.sals
, values
.sals
,
3268 (nelts
* sizeof(struct symtab_and_line
)));
3269 return_values
.nelts
= nelts
;
3270 discard_cleanups (old_chain
);
3271 return return_values
;
3274 if (num
>= nelts
+ 2)
3276 printf_unfiltered ("No choice number %d.\n", num
);
3281 if (values
.sals
[num
].pc
)
3285 symname
= SYMBOL_NAME (sym_arr
[num
]);
3286 make_cleanup (free
, symname
);
3287 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3289 return_values
.sals
[i
++] = values
.sals
[num
];
3290 values
.sals
[num
].pc
= 0;
3294 printf_unfiltered ("duplicate request for %d ignored.\n", num
);
3299 while (*args
== ' ' || *args
== '\t') args
++;
3301 return_values
.nelts
= i
;
3302 discard_cleanups (old_chain
);
3303 return return_values
;
3307 /* Slave routine for sources_info. Force line breaks at ,'s.
3308 NAME is the name to print and *FIRST is nonzero if this is the first
3309 name printed. Set *FIRST to zero. */
3311 output_source_filename (name
, first
)
3315 /* Table of files printed so far. Since a single source file can
3316 result in several partial symbol tables, we need to avoid printing
3317 it more than once. Note: if some of the psymtabs are read in and
3318 some are not, it gets printed both under "Source files for which
3319 symbols have been read" and "Source files for which symbols will
3320 be read in on demand". I consider this a reasonable way to deal
3321 with the situation. I'm not sure whether this can also happen for
3322 symtabs; it doesn't hurt to check. */
3323 static char **tab
= NULL
;
3324 /* Allocated size of tab in elements.
3325 Start with one 256-byte block (when using GNU malloc.c).
3326 24 is the malloc overhead when range checking is in effect. */
3327 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3328 /* Current size of tab in elements. */
3329 static int tab_cur_size
;
3336 tab
= (char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3340 /* Is NAME in tab? */
3341 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3342 if (STREQ (*p
, name
))
3343 /* Yes; don't print it again. */
3345 /* No; add it to tab. */
3346 if (tab_cur_size
== tab_alloc_size
)
3348 tab_alloc_size
*= 2;
3349 tab
= (char **) xrealloc ((char *) tab
, tab_alloc_size
* sizeof (*tab
));
3351 tab
[tab_cur_size
++] = name
;
3359 printf_filtered (", ");
3363 fputs_filtered (name
, gdb_stdout
);
3367 sources_info (ignore
, from_tty
)
3371 register struct symtab
*s
;
3372 register struct partial_symtab
*ps
;
3373 register struct objfile
*objfile
;
3376 if (!have_full_symbols () && !have_partial_symbols ())
3378 error (no_symtab_msg
);
3381 printf_filtered ("Source files for which symbols have been read in:\n\n");
3384 ALL_SYMTABS (objfile
, s
)
3386 output_source_filename (s
-> filename
, &first
);
3388 printf_filtered ("\n\n");
3390 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
3393 ALL_PSYMTABS (objfile
, ps
)
3397 output_source_filename (ps
-> filename
, &first
);
3400 printf_filtered ("\n");
3404 file_matches (file
, files
, nfiles
)
3411 if (file
!= NULL
&& nfiles
!= 0)
3413 for (i
= 0; i
< nfiles
; i
++)
3415 if (strcmp (files
[i
], basename (file
)) == 0)
3419 else if (nfiles
== 0)
3424 /* Free any memory associated with a search. */
3426 free_search_symbols (symbols
)
3427 struct symbol_search
*symbols
;
3429 struct symbol_search
*p
;
3430 struct symbol_search
*next
;
3432 for (p
= symbols
; p
!= NULL
; p
= next
)
3439 /* Search the symbol table for matches to the regular expression REGEXP,
3440 returning the results in *MATCHES.
3442 Only symbols of KIND are searched:
3443 FUNCTIONS_NAMESPACE - search all functions
3444 TYPES_NAMESPACE - search all type names
3445 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
3446 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
3447 and constants (enums)
3449 free_search_symbols should be called when *MATCHES is no longer needed.
3452 search_symbols (regexp
, kind
, nfiles
, files
, matches
)
3454 namespace_enum kind
;
3457 struct symbol_search
**matches
;
3460 register struct symtab
*s
;
3461 register struct partial_symtab
*ps
;
3462 register struct blockvector
*bv
;
3463 struct blockvector
*prev_bv
= 0;
3464 register struct block
*b
;
3467 register struct symbol
*sym
;
3468 struct partial_symbol
**psym
;
3469 struct objfile
*objfile
;
3470 struct minimal_symbol
*msymbol
;
3473 static enum minimal_symbol_type types
[]
3474 = {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3475 static enum minimal_symbol_type types2
[]
3476 = {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3477 static enum minimal_symbol_type types3
[]
3478 = {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3479 static enum minimal_symbol_type types4
[]
3480 = {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3481 enum minimal_symbol_type ourtype
;
3482 enum minimal_symbol_type ourtype2
;
3483 enum minimal_symbol_type ourtype3
;
3484 enum minimal_symbol_type ourtype4
;
3485 struct symbol_search
*sr
;
3486 struct symbol_search
*psr
;
3487 struct symbol_search
*tail
;
3488 struct cleanup
*old_chain
= NULL
;
3490 if (kind
< LABEL_NAMESPACE
)
3491 error ("must search on specific namespace");
3493 ourtype
= types
[(int) (kind
- LABEL_NAMESPACE
)];
3494 ourtype2
= types2
[(int) (kind
- LABEL_NAMESPACE
)];
3495 ourtype3
= types3
[(int) (kind
- LABEL_NAMESPACE
)];
3496 ourtype4
= types4
[(int) (kind
- LABEL_NAMESPACE
)];
3498 sr
= *matches
= NULL
;
3503 /* Make sure spacing is right for C++ operators.
3504 This is just a courtesy to make the matching less sensitive
3505 to how many spaces the user leaves between 'operator'
3506 and <TYPENAME> or <OPERATOR>. */
3508 char *opname
= operator_chars (regexp
, &opend
);
3511 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3512 if (isalpha(*opname
) || *opname
== '_' || *opname
== '$')
3514 /* There should 1 space between 'operator' and 'TYPENAME'. */
3515 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3520 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3521 if (opname
[-1] == ' ')
3524 /* If wrong number of spaces, fix it. */
3527 char *tmp
= (char*) alloca(opend
-opname
+10);
3528 sprintf(tmp
, "operator%.*s%s", fix
, " ", opname
);
3533 if (0 != (val
= re_comp (regexp
)))
3534 error ("Invalid regexp (%s): %s", val
, regexp
);
3537 /* Search through the partial symtabs *first* for all symbols
3538 matching the regexp. That way we don't have to reproduce all of
3539 the machinery below. */
3541 ALL_PSYMTABS (objfile
, ps
)
3543 struct partial_symbol
**bound
, **gbound
, **sbound
;
3546 if (ps
->readin
) continue;
3548 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3549 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3552 /* Go through all of the symbols stored in a partial
3553 symtab in one loop. */
3554 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3559 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3561 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3572 /* If it would match (logic taken from loop below)
3573 load the file and go on to the next one */
3574 if (file_matches (ps
->filename
, files
, nfiles
)
3575 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
3576 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3577 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3578 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3579 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3580 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3582 PSYMTAB_TO_SYMTAB(ps
);
3590 /* Here, we search through the minimal symbol tables for functions
3591 and variables that match, and force their symbols to be read.
3592 This is in particular necessary for demangled variable names,
3593 which are no longer put into the partial symbol tables.
3594 The symbol will then be found during the scan of symtabs below.
3596 For functions, find_pc_symtab should succeed if we have debug info
3597 for the function, for variables we have to call lookup_symbol
3598 to determine if the variable has debug info.
3599 If the lookup fails, set found_misc so that we will rescan to print
3600 any matching symbols without debug info.
3603 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
3605 ALL_MSYMBOLS (objfile
, msymbol
)
3607 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3608 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3609 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3610 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3612 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3614 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3616 if (kind
== FUNCTIONS_NAMESPACE
3617 || lookup_symbol (SYMBOL_NAME (msymbol
),
3618 (struct block
*) NULL
,
3620 0, (struct symtab
**) NULL
) == NULL
)
3628 ALL_SYMTABS (objfile
, s
)
3630 bv
= BLOCKVECTOR (s
);
3631 /* Often many files share a blockvector.
3632 Scan each blockvector only once so that
3633 we don't get every symbol many times.
3634 It happens that the first symtab in the list
3635 for any given blockvector is the main file. */
3637 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3639 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3640 /* Skip the sort if this block is always sorted. */
3641 if (!BLOCK_SHOULD_SORT (b
))
3642 sort_block_syms (b
);
3643 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
3646 sym
= BLOCK_SYM (b
, j
);
3647 if (file_matches (s
->filename
, files
, nfiles
)
3648 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
3649 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3650 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3651 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3652 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3653 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3654 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3657 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3661 psr
->msymbol
= NULL
;
3666 old_chain
= make_cleanup ((make_cleanup_func
)
3667 free_search_symbols
, sr
);
3678 /* If there are no eyes, avoid all contact. I mean, if there are
3679 no debug symbols, then print directly from the msymbol_vector. */
3681 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
3683 ALL_MSYMBOLS (objfile
, msymbol
)
3685 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3686 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3687 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3688 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3690 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3692 /* Functions: Look up by address. */
3693 if (kind
!= FUNCTIONS_NAMESPACE
||
3694 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3696 /* Variables/Absolutes: Look up by name */
3697 if (lookup_symbol (SYMBOL_NAME (msymbol
),
3698 (struct block
*) NULL
, VAR_NAMESPACE
,
3699 0, (struct symtab
**) NULL
) == NULL
)
3702 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3704 psr
->msymbol
= msymbol
;
3711 old_chain
= make_cleanup ((make_cleanup_func
)
3712 free_search_symbols
, &sr
);
3726 discard_cleanups (old_chain
);
3729 /* Helper function for symtab_symbol_info, this function uses
3730 the data returned from search_symbols() to print information
3731 regarding the match to gdb_stdout.
3734 print_symbol_info (kind
, s
, sym
, block
, last
)
3735 namespace_enum kind
;
3741 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3743 fputs_filtered ("\nFile ", gdb_stdout
);
3744 fputs_filtered (s
->filename
, gdb_stdout
);
3745 fputs_filtered (":\n", gdb_stdout
);
3748 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3749 printf_filtered ("static ");
3751 /* Typedef that is not a C++ class */
3752 if (kind
== TYPES_NAMESPACE
3753 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3754 c_typedef_print (SYMBOL_TYPE(sym
), sym
, gdb_stdout
);
3755 /* variable, func, or typedef-that-is-c++-class */
3756 else if (kind
< TYPES_NAMESPACE
||
3757 (kind
== TYPES_NAMESPACE
&&
3758 SYMBOL_NAMESPACE(sym
) == STRUCT_NAMESPACE
))
3760 type_print (SYMBOL_TYPE (sym
),
3761 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3762 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3765 printf_filtered (";\n");
3770 /* Tiemann says: "info methods was never implemented." */
3771 char *demangled_name
;
3772 c_type_print_base (TYPE_FN_FIELD_TYPE(t
, block
),
3774 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t
, block
),
3776 if (TYPE_FN_FIELD_STUB (t
, block
))
3777 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
3779 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
3780 DMGL_ANSI
| DMGL_PARAMS
);
3781 if (demangled_name
== NULL
)
3782 fprintf_filtered (stream
, "<badly mangled name %s>",
3783 TYPE_FN_FIELD_PHYSNAME (t
, block
));
3786 fputs_filtered (demangled_name
, stream
);
3787 free (demangled_name
);
3793 /* This help function for symtab_symbol_info() prints information
3794 for non-debugging symbols to gdb_stdout.
3797 print_msymbol_info (msymbol
)
3798 struct minimal_symbol
*msymbol
;
3800 printf_filtered (" %08lx %s\n",
3801 (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol
),
3802 SYMBOL_SOURCE_NAME (msymbol
));
3805 /* This is the guts of the commands "info functions", "info types", and
3806 "info variables". It calls search_symbols to find all matches and then
3807 print_[m]symbol_info to print out some useful information about the
3811 symtab_symbol_info (regexp
, kind
, from_tty
)
3813 namespace_enum kind
;
3816 static char *classnames
[]
3817 = {"variable", "function", "type", "method"};
3818 struct symbol_search
*symbols
;
3819 struct symbol_search
*p
;
3820 struct cleanup
*old_chain
;
3821 char *last_filename
= NULL
;
3824 /* must make sure that if we're interrupted, symbols gets freed */
3825 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3826 old_chain
= make_cleanup ((make_cleanup_func
) free_search_symbols
, symbols
);
3828 printf_filtered (regexp
3829 ? "All %ss matching regular expression \"%s\":\n"
3830 : "All defined %ss:\n",
3831 classnames
[(int) (kind
- LABEL_NAMESPACE
- 1)], regexp
);
3833 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3837 if (p
->msymbol
!= NULL
)
3841 printf_filtered ("\nNon-debugging symbols:\n");
3844 print_msymbol_info (p
->msymbol
);
3848 print_symbol_info (kind
,
3853 last_filename
= p
->symtab
->filename
;
3857 do_cleanups (old_chain
);
3861 variables_info (regexp
, from_tty
)
3865 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3869 functions_info (regexp
, from_tty
)
3873 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3877 types_info (regexp
, from_tty
)
3881 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3885 /* Tiemann says: "info methods was never implemented." */
3887 methods_info (regexp
)
3890 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
3894 /* Breakpoint all functions matching regular expression. */
3896 rbreak_command (regexp
, from_tty
)
3900 struct symbol_search
*ss
;
3901 struct symbol_search
*p
;
3902 struct cleanup
*old_chain
;
3904 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3905 old_chain
= make_cleanup ((make_cleanup_func
) free_search_symbols
, ss
);
3907 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3909 if (p
->msymbol
== NULL
)
3911 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3912 + strlen (SYMBOL_NAME (p
->symbol
))
3914 strcpy (string
, p
->symtab
->filename
);
3915 strcat (string
, ":'");
3916 strcat (string
, SYMBOL_NAME (p
->symbol
));
3917 strcat (string
, "'");
3918 break_command (string
, from_tty
);
3919 print_symbol_info (FUNCTIONS_NAMESPACE
,
3923 p
->symtab
->filename
);
3927 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3928 printf_filtered ("<function, no debug info> %s;\n",
3929 SYMBOL_SOURCE_NAME (p
->msymbol
));
3933 do_cleanups (old_chain
);
3937 /* Return Nonzero if block a is lexically nested within block b,
3938 or if a and b have the same pc range.
3939 Return zero otherwise. */
3942 struct block
*a
, *b
;
3946 return BLOCK_START (a
) >= BLOCK_START (b
)
3947 && BLOCK_END (a
) <= BLOCK_END (b
);
3951 /* Helper routine for make_symbol_completion_list. */
3953 static int return_val_size
;
3954 static int return_val_index
;
3955 static char **return_val
;
3957 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3959 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3960 /* Put only the mangled name on the list. */ \
3961 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3962 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3963 completion_list_add_name \
3964 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3966 completion_list_add_name \
3967 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3970 /* Test to see if the symbol specified by SYMNAME (which is already
3971 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3972 characters. If so, add it to the current completion list. */
3975 completion_list_add_name (symname
, sym_text
, sym_text_len
, text
, word
)
3985 /* clip symbols that cannot match */
3987 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3992 /* Clip any symbol names that we've already considered. (This is a
3993 time optimization) */
3995 for (i
= 0; i
< return_val_index
; ++i
)
3997 if (STREQ (symname
, return_val
[i
]))
4003 /* We have a match for a completion, so add SYMNAME to the current list
4004 of matches. Note that the name is moved to freshly malloc'd space. */
4008 if (word
== sym_text
)
4010 new = xmalloc (strlen (symname
) + 5);
4011 strcpy (new, symname
);
4013 else if (word
> sym_text
)
4015 /* Return some portion of symname. */
4016 new = xmalloc (strlen (symname
) + 5);
4017 strcpy (new, symname
+ (word
- sym_text
));
4021 /* Return some of SYM_TEXT plus symname. */
4022 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4023 strncpy (new, word
, sym_text
- word
);
4024 new[sym_text
- word
] = '\0';
4025 strcat (new, symname
);
4028 /* Recheck for duplicates if we intend to add a modified symbol. */
4029 if (word
!= sym_text
)
4031 for (i
= 0; i
< return_val_index
; ++i
)
4033 if (STREQ (new, return_val
[i
]))
4041 if (return_val_index
+ 3 > return_val_size
)
4043 newsize
= (return_val_size
*= 2) * sizeof (char *);
4044 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
4046 return_val
[return_val_index
++] = new;
4047 return_val
[return_val_index
] = NULL
;
4051 /* Return a NULL terminated array of all symbols (regardless of class) which
4052 begin by matching TEXT. If the answer is no symbols, then the return value
4053 is an array which contains only a NULL pointer.
4055 Problem: All of the symbols have to be copied because readline frees them.
4056 I'm not going to worry about this; hopefully there won't be that many. */
4059 make_symbol_completion_list (text
, word
)
4063 register struct symbol
*sym
;
4064 register struct symtab
*s
;
4065 register struct partial_symtab
*ps
;
4066 register struct minimal_symbol
*msymbol
;
4067 register struct objfile
*objfile
;
4068 register struct block
*b
, *surrounding_static_block
= 0;
4070 struct partial_symbol
**psym
;
4071 /* The symbol we are completing on. Points in same buffer as text. */
4073 /* Length of sym_text. */
4076 /* Now look for the symbol we are supposed to complete on.
4077 FIXME: This should be language-specific. */
4081 char *quote_pos
= NULL
;
4083 /* First see if this is a quoted string. */
4085 for (p
= text
; *p
!= '\0'; ++p
)
4087 if (quote_found
!= '\0')
4089 if (*p
== quote_found
)
4090 /* Found close quote. */
4092 else if (*p
== '\\' && p
[1] == quote_found
)
4093 /* A backslash followed by the quote character
4094 doesn't end the string. */
4097 else if (*p
== '\'' || *p
== '"')
4103 if (quote_found
== '\'')
4104 /* A string within single quotes can be a symbol, so complete on it. */
4105 sym_text
= quote_pos
+ 1;
4106 else if (quote_found
== '"')
4107 /* A double-quoted string is never a symbol, nor does it make sense
4108 to complete it any other way. */
4112 /* It is not a quoted string. Break it based on the characters
4113 which are in symbols. */
4116 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4125 sym_text_len
= strlen (sym_text
);
4127 return_val_size
= 100;
4128 return_val_index
= 0;
4129 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4130 return_val
[0] = NULL
;
4132 /* Look through the partial symtabs for all symbols which begin
4133 by matching SYM_TEXT. Add each one that you find to the list. */
4135 ALL_PSYMTABS (objfile
, ps
)
4137 /* If the psymtab's been read in we'll get it when we search
4138 through the blockvector. */
4139 if (ps
->readin
) continue;
4141 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4142 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4143 + ps
->n_global_syms
);
4146 /* If interrupted, then quit. */
4148 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4151 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4152 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4153 + ps
->n_static_syms
);
4157 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4161 /* At this point scan through the misc symbol vectors and add each
4162 symbol you find to the list. Eventually we want to ignore
4163 anything that isn't a text symbol (everything else will be
4164 handled by the psymtab code above). */
4166 ALL_MSYMBOLS (objfile
, msymbol
)
4169 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4172 /* Search upwards from currently selected frame (so that we can
4173 complete on local vars. */
4175 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4177 if (!BLOCK_SUPERBLOCK (b
))
4179 surrounding_static_block
= b
; /* For elmin of dups */
4182 /* Also catch fields of types defined in this places which match our
4183 text string. Only complete on types visible from current context. */
4185 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4187 sym
= BLOCK_SYM (b
, i
);
4188 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4189 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4191 struct type
*t
= SYMBOL_TYPE (sym
);
4192 enum type_code c
= TYPE_CODE (t
);
4194 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4196 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4198 if (TYPE_FIELD_NAME (t
, j
))
4200 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4201 sym_text
, sym_text_len
, text
, word
);
4209 /* Go through the symtabs and check the externs and statics for
4210 symbols which match. */
4212 ALL_SYMTABS (objfile
, s
)
4215 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4216 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4218 sym
= BLOCK_SYM (b
, i
);
4219 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4223 ALL_SYMTABS (objfile
, s
)
4226 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4227 /* Don't do this block twice. */
4228 if (b
== surrounding_static_block
) continue;
4229 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4231 sym
= BLOCK_SYM (b
, i
);
4232 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4236 return (return_val
);
4239 /* Determine if PC is in the prologue of a function. The prologue is the area
4240 between the first instruction of a function, and the first executable line.
4241 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4243 If non-zero, func_start is where we think the prologue starts, possibly
4244 by previous examination of symbol table information.
4248 in_prologue (pc
, func_start
)
4250 CORE_ADDR func_start
;
4252 struct symtab_and_line sal
;
4253 CORE_ADDR func_addr
, func_end
;
4255 if (!find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4256 goto nosyms
; /* Might be in prologue */
4258 sal
= find_pc_line (func_addr
, 0);
4263 /* sal.end is the address of the first instruction past sal.line. */
4264 if (sal
.end
> func_addr
4265 && sal
.end
<= func_end
) /* Is prologue in function? */
4266 return pc
< sal
.end
; /* Yes, is pc in prologue? */
4268 /* The line after the prologue seems to be outside the function. In this
4269 case, tell the caller to find the prologue the hard way. */
4273 /* Come here when symtabs don't contain line # info. In this case, it is
4274 likely that the user has stepped into a library function w/o symbols, or
4275 is doing a stepi/nexti through code without symbols. */
4279 /* If func_start is zero (meaning unknown) then we don't know whether pc is
4280 in the prologue or not. I.E. it might be. */
4282 if (!func_start
) return 1;
4284 /* We need to call the target-specific prologue skipping functions with the
4285 function's start address because PC may be pointing at an instruction that
4286 could be mistakenly considered part of the prologue. */
4288 SKIP_PROLOGUE (func_start
);
4290 return pc
< func_start
;
4294 /* Begin overload resolution functions */
4295 /* Helper routine for make_symbol_completion_list. */
4297 static int sym_return_val_size
;
4298 static int sym_return_val_index
;
4299 static struct symbol
**sym_return_val
;
4301 /* Test to see if the symbol specified by SYMNAME (which is already
4302 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4303 characters. If so, add it to the current completion list. */
4306 overload_list_add_symbol (sym
, oload_name
)
4307 struct symbol
* sym
;
4313 /* Get the demangled name without parameters */
4314 char * sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
4317 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
4318 strcpy (sym_name
, SYMBOL_NAME (sym
));
4321 /* skip symbols that cannot match */
4322 if (strcmp (sym_name
, oload_name
) != 0)
4325 /* If there is no type information, we can't do anything, so skip */
4326 if (SYMBOL_TYPE (sym
) == NULL
)
4329 /* skip any symbols that we've already considered. */
4330 for (i
= 0; i
< sym_return_val_index
; ++i
)
4331 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
4334 /* We have a match for an overload instance, so add SYM to the current list
4335 * of overload instances */
4336 if (sym_return_val_index
+ 3 > sym_return_val_size
)
4338 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
4339 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
4341 sym_return_val
[sym_return_val_index
++] = sym
;
4342 sym_return_val
[sym_return_val_index
] = NULL
;
4347 /* Return a null-terminated list of pointers to function symbols that
4348 * match name of the supplied symbol FSYM.
4349 * This is used in finding all overloaded instances of a function name.
4350 * This has been modified from make_symbol_completion_list. */
4354 make_symbol_overload_list (fsym
)
4355 struct symbol
* fsym
;
4357 register struct symbol
*sym
;
4358 register struct symtab
*s
;
4359 register struct partial_symtab
*ps
;
4360 register struct minimal_symbol
*msymbol
;
4361 register struct objfile
*objfile
;
4362 register struct block
*b
, *surrounding_static_block
= 0;
4364 struct partial_symbol
**psym
;
4365 /* The name we are completing on. */
4366 char *oload_name
= NULL
;
4367 /* Length of name. */
4368 int oload_name_len
= 0;
4370 /* Look for the symbol we are supposed to complete on.
4371 * FIXME: This should be language-specific. */
4373 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
4376 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
4377 strcpy (oload_name
, SYMBOL_NAME (fsym
));
4379 oload_name_len
= strlen (oload_name
);
4381 sym_return_val_size
= 100;
4382 sym_return_val_index
= 0;
4383 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
4384 sym_return_val
[0] = NULL
;
4386 /* Comment and #if 0 from Rajiv Mirani <mirani@cup.hp.com>.
4387 However, leaving #if 0's around is uncool. We need to figure out
4388 what this is really trying to do, decide whether we want that,
4389 and either fix it or delete it. --- Jim Blandy, Mar 1999 */
4391 /* ??? RM: What in hell is this? overload_list_add_symbol expects a symbol,
4392 * not a partial_symbol or a minimal_symbol. And it looks at the type field
4393 * of the symbol, and we don't know the type of minimal and partial symbols
4396 /* Look through the partial symtabs for all symbols which begin
4397 by matching OLOAD_NAME. Add each one that you find to the list. */
4399 ALL_PSYMTABS (objfile
, ps
)
4401 /* If the psymtab's been read in we'll get it when we search
4402 through the blockvector. */
4403 if (ps
->readin
) continue;
4405 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4406 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4407 + ps
->n_global_syms
);
4410 /* If interrupted, then quit. */
4412 overload_list_add_symbol (*psym
, oload_name
);
4415 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4416 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4417 + ps
->n_static_syms
);
4421 overload_list_add_symbol (*psym
, oload_name
);
4425 /* At this point scan through the misc symbol vectors and add each
4426 symbol you find to the list. Eventually we want to ignore
4427 anything that isn't a text symbol (everything else will be
4428 handled by the psymtab code above). */
4430 ALL_MSYMBOLS (objfile
, msymbol
)
4433 overload_list_add_symbol (msymbol
, oload_name
);
4437 /* Search upwards from currently selected frame (so that we can
4438 complete on local vars. */
4440 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4442 if (!BLOCK_SUPERBLOCK (b
))
4444 surrounding_static_block
= b
; /* For elimination of dups */
4447 /* Also catch fields of types defined in this places which match our
4448 text string. Only complete on types visible from current context. */
4450 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4452 sym
= BLOCK_SYM (b
, i
);
4453 overload_list_add_symbol (sym
, oload_name
);
4457 /* Go through the symtabs and check the externs and statics for
4458 symbols which match. */
4460 ALL_SYMTABS (objfile
, s
)
4463 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4464 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4466 sym
= BLOCK_SYM (b
, i
);
4467 overload_list_add_symbol (sym
, oload_name
);
4471 ALL_SYMTABS (objfile
, s
)
4474 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4475 /* Don't do this block twice. */
4476 if (b
== surrounding_static_block
) continue;
4477 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4479 sym
= BLOCK_SYM (b
, i
);
4480 overload_list_add_symbol (sym
, oload_name
);
4486 return (sym_return_val
);
4489 /* End of overload resolution functions */
4493 _initialize_symtab ()
4495 add_info ("variables", variables_info
,
4496 "All global and static variable names, or those matching REGEXP.");
4498 add_com("whereis", class_info
, variables_info
,
4499 "All global and static variable names, or those matching REGEXP.");
4501 add_info ("functions", functions_info
,
4502 "All function names, or those matching REGEXP.");
4504 /* FIXME: This command has at least the following problems:
4505 1. It prints builtin types (in a very strange and confusing fashion).
4506 2. It doesn't print right, e.g. with
4507 typedef struct foo *FOO
4508 type_print prints "FOO" when we want to make it (in this situation)
4509 print "struct foo *".
4510 I also think "ptype" or "whatis" is more likely to be useful (but if
4511 there is much disagreement "info types" can be fixed). */
4512 add_info ("types", types_info
,
4513 "All type names, or those matching REGEXP.");
4516 add_info ("methods", methods_info
,
4517 "All method names, or those matching REGEXP::REGEXP.\n\
4518 If the class qualifier is omitted, it is assumed to be the current scope.\n\
4519 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4522 add_info ("sources", sources_info
,
4523 "Source files in the program.");
4525 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4526 "Set a breakpoint for all functions matching REGEXP.");
4530 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4531 add_com ("lg", class_info
, variables_info
,
4532 "All global and static variable names, or those matching REGEXP.");
4535 /* Initialize the one built-in type that isn't language dependent... */
4536 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4537 "<unknown type>", (struct objfile
*) NULL
);