1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
41 #include "filenames.h" /* for FILENAME_CMP */
45 #include <sys/types.h>
47 #include "gdb_string.h"
52 /* Prototype for one function in parser-defs.h,
53 instead of including that entire file. */
55 extern char *find_template_name_end (char *);
57 /* Prototypes for local functions */
59 static void completion_list_add_name (char *, char *, int, char *, char *);
61 static void rbreak_command (char *, int);
63 static void types_info (char *, int);
65 static void functions_info (char *, int);
67 static void variables_info (char *, int);
69 static void sources_info (char *, int);
71 static void output_source_filename (char *, int *);
73 static int find_line_common (struct linetable
*, int, int *);
75 /* This one is used by linespec.c */
77 char *operator_chars (char *p
, char **end
);
79 static struct partial_symbol
*lookup_partial_symbol (struct partial_symtab
*,
83 static struct symbol
*lookup_symbol_aux (const char *name
, const
84 struct block
*block
, const
85 namespace_enum
namespace, int
86 *is_a_field_of_this
, struct
90 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
92 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
93 /* Signals the presence of objects compiled by HP compilers */
94 int hp_som_som_object_present
= 0;
96 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
98 static int file_matches (char *, char **, int);
100 static void print_symbol_info (namespace_enum
,
101 struct symtab
*, struct symbol
*, int, char *);
103 static void print_msymbol_info (struct minimal_symbol
*);
105 static void symtab_symbol_info (char *, namespace_enum
, int);
107 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
109 void _initialize_symtab (void);
113 /* The single non-language-specific builtin type */
114 struct type
*builtin_type_error
;
116 /* Block in which the most recently searched-for symbol was found.
117 Might be better to make this a parameter to lookup_symbol and
120 const struct block
*block_found
;
122 /* While the C++ support is still in flux, issue a possibly helpful hint on
123 using the new command completion feature on single quoted demangled C++
124 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
127 cplusplus_hint (char *name
)
129 while (*name
== '\'')
131 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name
, name
);
132 printf_filtered ("(Note leading single quote.)\n");
135 /* Check for a symtab of a specific name; first in symtabs, then in
136 psymtabs. *If* there is no '/' in the name, a match after a '/'
137 in the symtab filename will also work. */
140 lookup_symtab (const char *name
)
142 register struct symtab
*s
;
143 register struct partial_symtab
*ps
;
144 register struct objfile
*objfile
;
145 char *real_path
= NULL
;
147 /* Here we are interested in canonicalizing an absolute path, not
148 absolutizing a relative path. */
149 if (IS_ABSOLUTE_PATH (name
))
150 real_path
= gdb_realpath (name
);
154 /* First, search for an exact match */
156 ALL_SYMTABS (objfile
, s
)
158 if (FILENAME_CMP (name
, s
->filename
) == 0)
163 /* If the user gave us an absolute path, try to find the file in
164 this symtab and use its absolute path. */
165 if (real_path
!= NULL
)
167 char *rp
= symtab_to_filename (s
);
168 if (FILENAME_CMP (real_path
, rp
) == 0)
178 /* Now, search for a matching tail (only if name doesn't have any dirs) */
180 if (lbasename (name
) == name
)
181 ALL_SYMTABS (objfile
, s
)
183 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
187 /* Same search rules as above apply here, but now we look thru the
190 ps
= lookup_partial_symtab (name
);
195 error ("Internal: readin %s pst for `%s' found when no symtab found.",
198 s
= PSYMTAB_TO_SYMTAB (ps
);
203 /* At this point, we have located the psymtab for this file, but
204 the conversion to a symtab has failed. This usually happens
205 when we are looking up an include file. In this case,
206 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
207 been created. So, we need to run through the symtabs again in
208 order to find the file.
209 XXX - This is a crock, and should be fixed inside of the the
210 symbol parsing routines. */
214 /* Lookup the partial symbol table of a source file named NAME.
215 *If* there is no '/' in the name, a match after a '/'
216 in the psymtab filename will also work. */
218 struct partial_symtab
*
219 lookup_partial_symtab (const char *name
)
221 register struct partial_symtab
*pst
;
222 register struct objfile
*objfile
;
223 char *real_path
= NULL
;
225 /* Here we are interested in canonicalizing an absolute path, not
226 absolutizing a relative path. */
227 if (IS_ABSOLUTE_PATH (name
))
228 real_path
= gdb_realpath (name
);
230 ALL_PSYMTABS (objfile
, pst
)
232 if (FILENAME_CMP (name
, pst
->filename
) == 0)
237 /* If the user gave us an absolute path, try to find the file in
238 this symtab and use its absolute path. */
239 if (real_path
!= NULL
)
241 if (pst
->fullname
== NULL
)
242 source_full_path_of (pst
->filename
, &pst
->fullname
);
243 if (pst
->fullname
!= NULL
244 && FILENAME_CMP (real_path
, pst
->fullname
) == 0)
254 /* Now, search for a matching tail (only if name doesn't have any dirs) */
256 if (lbasename (name
) == name
)
257 ALL_PSYMTABS (objfile
, pst
)
259 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
266 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
267 full method name, which consist of the class name (from T), the unadorned
268 method name from METHOD_ID, and the signature for the specific overload,
269 specified by SIGNATURE_ID. Note that this function is g++ specific. */
272 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
274 int mangled_name_len
;
276 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
277 struct fn_field
*method
= &f
[signature_id
];
278 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
279 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
280 char *newname
= type_name_no_tag (type
);
282 /* Does the form of physname indicate that it is the full mangled name
283 of a constructor (not just the args)? */
284 int is_full_physname_constructor
;
287 int is_destructor
= is_destructor_name (physname
);
288 /* Need a new type prefix. */
289 char *const_prefix
= method
->is_const
? "C" : "";
290 char *volatile_prefix
= method
->is_volatile
? "V" : "";
292 int len
= (newname
== NULL
? 0 : strlen (newname
));
294 if (is_operator_name (field_name
))
295 return xstrdup (physname
);
297 is_full_physname_constructor
= is_constructor_name (physname
);
300 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
303 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
305 if (is_destructor
|| is_full_physname_constructor
)
307 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
308 strcpy (mangled_name
, physname
);
314 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
316 else if (physname
[0] == 't' || physname
[0] == 'Q')
318 /* The physname for template and qualified methods already includes
320 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
326 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
328 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
329 + strlen (buf
) + len
+ strlen (physname
) + 1);
332 mangled_name
= (char *) xmalloc (mangled_name_len
);
334 mangled_name
[0] = '\0';
336 strcpy (mangled_name
, field_name
);
338 strcat (mangled_name
, buf
);
339 /* If the class doesn't have a name, i.e. newname NULL, then we just
340 mangle it using 0 for the length of the class. Thus it gets mangled
341 as something starting with `::' rather than `classname::'. */
343 strcat (mangled_name
, newname
);
345 strcat (mangled_name
, physname
);
346 return (mangled_name
);
351 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
353 struct partial_symtab
*
354 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
356 register struct partial_symtab
*pst
;
357 register struct objfile
*objfile
;
359 ALL_PSYMTABS (objfile
, pst
)
361 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
363 struct minimal_symbol
*msymbol
;
364 struct partial_symtab
*tpst
;
366 /* An objfile that has its functions reordered might have
367 many partial symbol tables containing the PC, but
368 we want the partial symbol table that contains the
369 function containing the PC. */
370 if (!(objfile
->flags
& OBJF_REORDERED
) &&
371 section
== 0) /* can't validate section this way */
374 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
378 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
380 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
382 struct partial_symbol
*p
;
384 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
386 && SYMBOL_VALUE_ADDRESS (p
)
387 == SYMBOL_VALUE_ADDRESS (msymbol
))
397 /* Find which partial symtab contains PC. Return 0 if none.
398 Backward compatibility, no section */
400 struct partial_symtab
*
401 find_pc_psymtab (CORE_ADDR pc
)
403 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
406 /* Find which partial symbol within a psymtab matches PC and SECTION.
407 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
409 struct partial_symbol
*
410 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
413 struct partial_symbol
*best
= NULL
, *p
, **pp
;
417 psymtab
= find_pc_sect_psymtab (pc
, section
);
421 /* Cope with programs that start at address 0 */
422 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
424 /* Search the global symbols as well as the static symbols, so that
425 find_pc_partial_function doesn't use a minimal symbol and thus
426 cache a bad endaddr. */
427 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
428 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
429 < psymtab
->n_global_syms
);
433 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
434 && SYMBOL_CLASS (p
) == LOC_BLOCK
435 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
436 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
437 || (psymtab
->textlow
== 0
438 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
440 if (section
) /* match on a specific section */
442 fixup_psymbol_section (p
, psymtab
->objfile
);
443 if (SYMBOL_BFD_SECTION (p
) != section
)
446 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
451 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
452 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
453 < psymtab
->n_static_syms
);
457 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
458 && SYMBOL_CLASS (p
) == LOC_BLOCK
459 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
460 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
461 || (psymtab
->textlow
== 0
462 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
464 if (section
) /* match on a specific section */
466 fixup_psymbol_section (p
, psymtab
->objfile
);
467 if (SYMBOL_BFD_SECTION (p
) != section
)
470 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
478 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
479 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
481 struct partial_symbol
*
482 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
484 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
487 /* Debug symbols usually don't have section information. We need to dig that
488 out of the minimal symbols and stash that in the debug symbol. */
491 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
493 struct minimal_symbol
*msym
;
494 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
498 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
499 ginfo
->section
= SYMBOL_SECTION (msym
);
504 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
509 if (SYMBOL_BFD_SECTION (sym
))
512 fixup_section (&sym
->ginfo
, objfile
);
517 struct partial_symbol
*
518 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
523 if (SYMBOL_BFD_SECTION (psym
))
526 fixup_section (&psym
->ginfo
, objfile
);
531 /* Find the definition for a specified symbol name NAME
532 in namespace NAMESPACE, visible from lexical block BLOCK.
533 Returns the struct symbol pointer, or zero if no symbol is found.
534 If SYMTAB is non-NULL, store the symbol table in which the
535 symbol was found there, or NULL if not found.
536 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
537 NAME is a field of the current implied argument `this'. If so set
538 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
539 BLOCK_FOUND is set to the block in which NAME is found (in the case of
540 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
542 /* This function has a bunch of loops in it and it would seem to be
543 attractive to put in some QUIT's (though I'm not really sure
544 whether it can run long enough to be really important). But there
545 are a few calls for which it would appear to be bad news to quit
546 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
547 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
548 code below which can error(), but that probably doesn't affect
549 these calls since they are looking for a known variable and thus
550 can probably assume it will never hit the C++ code). */
553 lookup_symbol (const char *name
, const struct block
*block
,
554 const namespace_enum
namespace, int *is_a_field_of_this
,
555 struct symtab
**symtab
)
557 char *modified_name
= NULL
;
558 char *modified_name2
= NULL
;
559 int needtofreename
= 0;
560 struct symbol
*returnval
;
562 if (case_sensitivity
== case_sensitive_off
)
568 copy
= (char *) alloca (len
+ 1);
569 for (i
= 0; i
< len
; i
++)
570 copy
[i
] = tolower (name
[i
]);
572 modified_name
= copy
;
575 modified_name
= (char *) name
;
577 /* If we are using C++ language, demangle the name before doing a lookup, so
578 we can always binary search. */
579 if (current_language
->la_language
== language_cplus
)
581 modified_name2
= cplus_demangle (modified_name
, DMGL_ANSI
| DMGL_PARAMS
);
584 modified_name
= modified_name2
;
589 returnval
= lookup_symbol_aux (modified_name
, block
, namespace,
590 is_a_field_of_this
, symtab
);
592 xfree (modified_name2
);
597 static struct symbol
*
598 lookup_symbol_aux (const char *name
, const struct block
*block
,
599 const namespace_enum
namespace, int *is_a_field_of_this
,
600 struct symtab
**symtab
)
602 register struct symbol
*sym
;
603 register struct symtab
*s
= NULL
;
604 register struct partial_symtab
*ps
;
605 register struct blockvector
*bv
;
606 register struct objfile
*objfile
= NULL
;
607 register struct block
*b
;
608 register struct minimal_symbol
*msymbol
;
611 /* Search specified block and its superiors. */
615 sym
= lookup_block_symbol (block
, name
, namespace);
621 /* Search the list of symtabs for one which contains the
622 address of the start of this block. */
623 ALL_SYMTABS (objfile
, s
)
625 bv
= BLOCKVECTOR (s
);
626 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
627 if (BLOCK_START (b
) <= BLOCK_START (block
)
628 && BLOCK_END (b
) > BLOCK_START (block
))
635 return fixup_symbol_section (sym
, objfile
);
637 block
= BLOCK_SUPERBLOCK (block
);
640 /* FIXME: this code is never executed--block is always NULL at this
641 point. What is it trying to do, anyway? We already should have
642 checked the STATIC_BLOCK above (it is the superblock of top-level
643 blocks). Why is VAR_NAMESPACE special-cased? */
644 /* Don't need to mess with the psymtabs; if we have a block,
645 that file is read in. If we don't, then we deal later with
646 all the psymtab stuff that needs checking. */
647 /* Note (RT): The following never-executed code looks unnecessary to me also.
648 * If we change the code to use the original (passed-in)
649 * value of 'block', we could cause it to execute, but then what
650 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
651 * 'block' was already searched by the above code. And the STATIC_BLOCK's
652 * of *other* symtabs (those files not containing 'block' lexically)
653 * should not contain 'block' address-wise. So we wouldn't expect this
654 * code to find any 'sym''s that were not found above. I vote for
655 * deleting the following paragraph of code.
657 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
660 /* Find the right symtab. */
661 ALL_SYMTABS (objfile
, s
)
663 bv
= BLOCKVECTOR (s
);
664 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
665 if (BLOCK_START (b
) <= BLOCK_START (block
)
666 && BLOCK_END (b
) > BLOCK_START (block
))
668 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
674 return fixup_symbol_section (sym
, objfile
);
681 /* C++: If requested to do so by the caller,
682 check to see if NAME is a field of `this'. */
683 if (is_a_field_of_this
)
685 struct value
*v
= value_of_this (0);
687 *is_a_field_of_this
= 0;
688 if (v
&& check_field (v
, name
))
690 *is_a_field_of_this
= 1;
697 /* Now search all global blocks. Do the symtab's first, then
698 check the psymtab's. If a psymtab indicates the existence
699 of the desired name as a global, then do psymtab-to-symtab
700 conversion on the fly and return the found symbol. */
702 ALL_SYMTABS (objfile
, s
)
704 bv
= BLOCKVECTOR (s
);
705 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
706 sym
= lookup_block_symbol (block
, name
, namespace);
712 return fixup_symbol_section (sym
, objfile
);
718 /* Check for the possibility of the symbol being a function or
719 a mangled variable that is stored in one of the minimal symbol tables.
720 Eventually, all global symbols might be resolved in this way. */
722 if (namespace == VAR_NAMESPACE
)
724 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
727 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
728 SYMBOL_BFD_SECTION (msymbol
));
731 /* This is a function which has a symtab for its address. */
732 bv
= BLOCKVECTOR (s
);
733 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
734 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
736 /* We kept static functions in minimal symbol table as well as
737 in static scope. We want to find them in the symbol table. */
740 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
741 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
745 /* sym == 0 if symbol was found in the minimal symbol table
746 but not in the symtab.
747 Return 0 to use the msymbol definition of "foo_".
749 This happens for Fortran "foo_" symbols,
750 which are "foo" in the symtab.
752 This can also happen if "asm" is used to make a
753 regular symbol but not a debugging symbol, e.g.
760 return fixup_symbol_section (sym
, objfile
);
762 else if (MSYMBOL_TYPE (msymbol
) != mst_text
763 && MSYMBOL_TYPE (msymbol
) != mst_file_text
764 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
766 /* This is a mangled variable, look it up by its
768 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
769 namespace, is_a_field_of_this
, symtab
);
771 /* There are no debug symbols for this file, or we are looking
772 for an unmangled variable.
773 Try to find a matching static symbol below. */
779 ALL_PSYMTABS (objfile
, ps
)
781 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
783 s
= PSYMTAB_TO_SYMTAB (ps
);
784 bv
= BLOCKVECTOR (s
);
785 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
786 sym
= lookup_block_symbol (block
, name
, namespace);
789 /* This shouldn't be necessary, but as a last resort
790 * try looking in the statics even though the psymtab
791 * claimed the symbol was global. It's possible that
792 * the psymtab gets it wrong in some cases.
794 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
795 sym
= lookup_block_symbol (block
, name
, namespace);
797 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
798 %s may be an inlined function, or may be a template function\n\
799 (if a template, try specifying an instantiation: %s<type>).",
800 name
, ps
->filename
, name
, name
);
804 return fixup_symbol_section (sym
, objfile
);
808 /* Now search all static file-level symbols.
809 Not strictly correct, but more useful than an error.
810 Do the symtabs first, then check the psymtabs.
811 If a psymtab indicates the existence
812 of the desired name as a file-level static, then do psymtab-to-symtab
813 conversion on the fly and return the found symbol. */
815 ALL_SYMTABS (objfile
, s
)
817 bv
= BLOCKVECTOR (s
);
818 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
819 sym
= lookup_block_symbol (block
, name
, namespace);
825 return fixup_symbol_section (sym
, objfile
);
829 ALL_PSYMTABS (objfile
, ps
)
831 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
833 s
= PSYMTAB_TO_SYMTAB (ps
);
834 bv
= BLOCKVECTOR (s
);
835 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
836 sym
= lookup_block_symbol (block
, name
, namespace);
839 /* This shouldn't be necessary, but as a last resort
840 * try looking in the globals even though the psymtab
841 * claimed the symbol was static. It's possible that
842 * the psymtab gets it wrong in some cases.
844 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
845 sym
= lookup_block_symbol (block
, name
, namespace);
847 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
848 %s may be an inlined function, or may be a template function\n\
849 (if a template, try specifying an instantiation: %s<type>).",
850 name
, ps
->filename
, name
, name
);
854 return fixup_symbol_section (sym
, objfile
);
860 /* Check for the possibility of the symbol being a function or
861 a global variable that is stored in one of the minimal symbol tables.
862 The "minimal symbol table" is built from linker-supplied info.
864 RT: I moved this check to last, after the complete search of
865 the global (p)symtab's and static (p)symtab's. For HP-generated
866 symbol tables, this check was causing a premature exit from
867 lookup_symbol with NULL return, and thus messing up symbol lookups
868 of things like "c::f". It seems to me a check of the minimal
869 symbol table ought to be a last resort in any case. I'm vaguely
870 worried about the comment below which talks about FORTRAN routines "foo_"
871 though... is it saying we need to do the "minsym" check before
872 the static check in this case?
875 if (namespace == VAR_NAMESPACE
)
877 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
880 /* OK, we found a minimal symbol in spite of not
881 * finding any symbol. There are various possible
882 * explanations for this. One possibility is the symbol
883 * exists in code not compiled -g. Another possibility
884 * is that the 'psymtab' isn't doing its job.
885 * A third possibility, related to #2, is that we were confused
886 * by name-mangling. For instance, maybe the psymtab isn't
887 * doing its job because it only know about demangled
888 * names, but we were given a mangled name...
891 /* We first use the address in the msymbol to try to
892 * locate the appropriate symtab. Note that find_pc_symtab()
893 * has a side-effect of doing psymtab-to-symtab expansion,
894 * for the found symtab.
896 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
899 bv
= BLOCKVECTOR (s
);
900 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
901 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
903 /* We kept static functions in minimal symbol table as well as
904 in static scope. We want to find them in the symbol table. */
907 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
908 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
911 /* If we found one, return it */
919 /* If we get here with sym == 0, the symbol was
920 found in the minimal symbol table
921 but not in the symtab.
922 Fall through and return 0 to use the msymbol
923 definition of "foo_".
924 (Note that outer code generally follows up a call
925 to this routine with a call to lookup_minimal_symbol(),
926 so a 0 return means we'll just flow into that other routine).
928 This happens for Fortran "foo_" symbols,
929 which are "foo" in the symtab.
931 This can also happen if "asm" is used to make a
932 regular symbol but not a debugging symbol, e.g.
938 /* If the lookup-by-address fails, try repeating the
939 * entire lookup process with the symbol name from
940 * the msymbol (if different from the original symbol name).
942 else if (MSYMBOL_TYPE (msymbol
) != mst_text
943 && MSYMBOL_TYPE (msymbol
) != mst_file_text
944 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
946 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
947 namespace, is_a_field_of_this
, symtab
);
959 /* Look, in partial_symtab PST, for symbol NAME. Check the global
960 symbols if GLOBAL, the static symbols if not */
962 static struct partial_symbol
*
963 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
964 namespace_enum
namespace)
966 struct partial_symbol
*temp
;
967 struct partial_symbol
**start
, **psym
;
968 struct partial_symbol
**top
, **bottom
, **center
;
969 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
970 int do_linear_search
= 1;
977 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
978 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
980 if (global
) /* This means we can use a binary search. */
982 do_linear_search
= 0;
984 /* Binary search. This search is guaranteed to end with center
985 pointing at the earliest partial symbol with the correct
986 name. At that point *all* partial symbols with that name
987 will be checked against the correct namespace. */
990 top
= start
+ length
- 1;
993 center
= bottom
+ (top
- bottom
) / 2;
995 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
996 if (!do_linear_search
997 && (SYMBOL_LANGUAGE (*center
) == language_java
))
999 do_linear_search
= 1;
1001 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1007 bottom
= center
+ 1;
1010 if (!(top
== bottom
))
1011 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1013 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1014 we don't have to force a linear search on C++. Probably holds true
1015 for JAVA as well, no way to check.*/
1016 while (SYMBOL_MATCHES_NAME (*top
,name
))
1018 if (SYMBOL_NAMESPACE (*top
) == namespace)
1026 /* Can't use a binary search or else we found during the binary search that
1027 we should also do a linear search. */
1029 if (do_linear_search
)
1031 for (psym
= start
; psym
< start
+ length
; psym
++)
1033 if (namespace == SYMBOL_NAMESPACE (*psym
))
1035 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1046 /* Look up a type named NAME in the struct_namespace. The type returned
1047 must not be opaque -- i.e., must have at least one field defined
1049 This code was modelled on lookup_symbol -- the parts not relevant to looking
1050 up types were just left out. In particular it's assumed here that types
1051 are available in struct_namespace and only at file-static or global blocks. */
1055 lookup_transparent_type (const char *name
)
1057 register struct symbol
*sym
;
1058 register struct symtab
*s
= NULL
;
1059 register struct partial_symtab
*ps
;
1060 struct blockvector
*bv
;
1061 register struct objfile
*objfile
;
1062 register struct block
*block
;
1064 /* Now search all the global symbols. Do the symtab's first, then
1065 check the psymtab's. If a psymtab indicates the existence
1066 of the desired name as a global, then do psymtab-to-symtab
1067 conversion on the fly and return the found symbol. */
1069 ALL_SYMTABS (objfile
, s
)
1071 bv
= BLOCKVECTOR (s
);
1072 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1073 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1074 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1076 return SYMBOL_TYPE (sym
);
1080 ALL_PSYMTABS (objfile
, ps
)
1082 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1084 s
= PSYMTAB_TO_SYMTAB (ps
);
1085 bv
= BLOCKVECTOR (s
);
1086 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1087 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1090 /* This shouldn't be necessary, but as a last resort
1091 * try looking in the statics even though the psymtab
1092 * claimed the symbol was global. It's possible that
1093 * the psymtab gets it wrong in some cases.
1095 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1096 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1098 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1099 %s may be an inlined function, or may be a template function\n\
1100 (if a template, try specifying an instantiation: %s<type>).",
1101 name
, ps
->filename
, name
, name
);
1103 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1104 return SYMBOL_TYPE (sym
);
1108 /* Now search the static file-level symbols.
1109 Not strictly correct, but more useful than an error.
1110 Do the symtab's first, then
1111 check the psymtab's. If a psymtab indicates the existence
1112 of the desired name as a file-level static, then do psymtab-to-symtab
1113 conversion on the fly and return the found symbol.
1116 ALL_SYMTABS (objfile
, s
)
1118 bv
= BLOCKVECTOR (s
);
1119 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1120 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1121 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1123 return SYMBOL_TYPE (sym
);
1127 ALL_PSYMTABS (objfile
, ps
)
1129 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1131 s
= PSYMTAB_TO_SYMTAB (ps
);
1132 bv
= BLOCKVECTOR (s
);
1133 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1134 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1137 /* This shouldn't be necessary, but as a last resort
1138 * try looking in the globals even though the psymtab
1139 * claimed the symbol was static. It's possible that
1140 * the psymtab gets it wrong in some cases.
1142 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1143 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1145 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1146 %s may be an inlined function, or may be a template function\n\
1147 (if a template, try specifying an instantiation: %s<type>).",
1148 name
, ps
->filename
, name
, name
);
1150 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1151 return SYMBOL_TYPE (sym
);
1154 return (struct type
*) 0;
1158 /* Find the psymtab containing main(). */
1159 /* FIXME: What about languages without main() or specially linked
1160 executables that have no main() ? */
1162 struct partial_symtab
*
1163 find_main_psymtab (void)
1165 register struct partial_symtab
*pst
;
1166 register struct objfile
*objfile
;
1168 ALL_PSYMTABS (objfile
, pst
)
1170 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1178 /* Search BLOCK for symbol NAME in NAMESPACE.
1180 Note that if NAME is the demangled form of a C++ symbol, we will fail
1181 to find a match during the binary search of the non-encoded names, but
1182 for now we don't worry about the slight inefficiency of looking for
1183 a match we'll never find, since it will go pretty quick. Once the
1184 binary search terminates, we drop through and do a straight linear
1185 search on the symbols. Each symbol which is marked as being a C++
1186 symbol (language_cplus set) has both the encoded and non-encoded names
1187 tested for a match. */
1190 lookup_block_symbol (register const struct block
*block
, const char *name
,
1191 const namespace_enum
namespace)
1193 register int bot
, top
, inc
;
1194 register struct symbol
*sym
;
1195 register struct symbol
*sym_found
= NULL
;
1196 register int do_linear_search
= 1;
1198 /* If the blocks's symbols were sorted, start with a binary search. */
1200 if (BLOCK_SHOULD_SORT (block
))
1202 /* Reset the linear search flag so if the binary search fails, we
1203 won't do the linear search once unless we find some reason to
1206 do_linear_search
= 0;
1207 top
= BLOCK_NSYMS (block
);
1210 /* Advance BOT to not far before the first symbol whose name is NAME. */
1214 inc
= (top
- bot
+ 1);
1215 /* No need to keep binary searching for the last few bits worth. */
1220 inc
= (inc
>> 1) + bot
;
1221 sym
= BLOCK_SYM (block
, inc
);
1222 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1224 do_linear_search
= 1;
1226 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1230 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1234 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1244 /* Now scan forward until we run out of symbols, find one whose
1245 name is greater than NAME, or find one we want. If there is
1246 more than one symbol with the right name and namespace, we
1247 return the first one; I believe it is now impossible for us
1248 to encounter two symbols with the same name and namespace
1249 here, because blocks containing argument symbols are no
1252 top
= BLOCK_NSYMS (block
);
1255 sym
= BLOCK_SYM (block
, bot
);
1256 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1257 SYMBOL_MATCHES_NAME (sym
, name
))
1261 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1269 /* Here if block isn't sorted, or we fail to find a match during the
1270 binary search above. If during the binary search above, we find a
1271 symbol which is a Java symbol, then we have re-enabled the linear
1272 search flag which was reset when starting the binary search.
1274 This loop is equivalent to the loop above, but hacked greatly for speed.
1276 Note that parameter symbols do not always show up last in the
1277 list; this loop makes sure to take anything else other than
1278 parameter symbols first; it only uses parameter symbols as a
1279 last resort. Note that this only takes up extra computation
1282 if (do_linear_search
)
1284 top
= BLOCK_NSYMS (block
);
1288 sym
= BLOCK_SYM (block
, bot
);
1289 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1290 SYMBOL_MATCHES_NAME (sym
, name
))
1292 /* If SYM has aliases, then use any alias that is active
1293 at the current PC. If no alias is active at the current
1294 PC, then use the main symbol.
1296 ?!? Is checking the current pc correct? Is this routine
1297 ever called to look up a symbol from another context?
1299 FIXME: No, it's not correct. If someone sets a
1300 conditional breakpoint at an address, then the
1301 breakpoint's `struct expression' should refer to the
1302 `struct symbol' appropriate for the breakpoint's
1303 address, which may not be the PC.
1305 Even if it were never called from another context,
1306 it's totally bizarre for lookup_symbol's behavior to
1307 depend on the value of the inferior's current PC. We
1308 should pass in the appropriate PC as well as the
1309 block. The interface to lookup_symbol should change
1310 to require the caller to provide a PC. */
1312 if (SYMBOL_ALIASES (sym
))
1313 sym
= find_active_alias (sym
, read_pc ());
1316 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1317 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1318 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1319 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1320 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1321 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1329 return (sym_found
); /* Will be NULL if not found. */
1332 /* Given a main symbol SYM and ADDR, search through the alias
1333 list to determine if an alias is active at ADDR and return
1336 If no alias is active, then return SYM. */
1338 static struct symbol
*
1339 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1341 struct range_list
*r
;
1342 struct alias_list
*aliases
;
1344 /* If we have aliases, check them first. */
1345 aliases
= SYMBOL_ALIASES (sym
);
1349 if (!SYMBOL_RANGES (aliases
->sym
))
1350 return aliases
->sym
;
1351 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1353 if (r
->start
<= addr
&& r
->end
> addr
)
1354 return aliases
->sym
;
1356 aliases
= aliases
->next
;
1359 /* Nothing found, return the main symbol. */
1364 /* Return the symbol for the function which contains a specified
1365 lexical block, described by a struct block BL. */
1368 block_function (struct block
*bl
)
1370 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1371 bl
= BLOCK_SUPERBLOCK (bl
);
1373 return BLOCK_FUNCTION (bl
);
1376 /* Find the symtab associated with PC and SECTION. Look through the
1377 psymtabs and read in another symtab if necessary. */
1380 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1382 register struct block
*b
;
1383 struct blockvector
*bv
;
1384 register struct symtab
*s
= NULL
;
1385 register struct symtab
*best_s
= NULL
;
1386 register struct partial_symtab
*ps
;
1387 register struct objfile
*objfile
;
1388 CORE_ADDR distance
= 0;
1390 /* Search all symtabs for the one whose file contains our address, and which
1391 is the smallest of all the ones containing the address. This is designed
1392 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1393 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1394 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1396 This happens for native ecoff format, where code from included files
1397 gets its own symtab. The symtab for the included file should have
1398 been read in already via the dependency mechanism.
1399 It might be swifter to create several symtabs with the same name
1400 like xcoff does (I'm not sure).
1402 It also happens for objfiles that have their functions reordered.
1403 For these, the symtab we are looking for is not necessarily read in. */
1405 ALL_SYMTABS (objfile
, s
)
1407 bv
= BLOCKVECTOR (s
);
1408 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1410 if (BLOCK_START (b
) <= pc
1411 && BLOCK_END (b
) > pc
1413 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1415 /* For an objfile that has its functions reordered,
1416 find_pc_psymtab will find the proper partial symbol table
1417 and we simply return its corresponding symtab. */
1418 /* In order to better support objfiles that contain both
1419 stabs and coff debugging info, we continue on if a psymtab
1421 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1423 ps
= find_pc_sect_psymtab (pc
, section
);
1425 return PSYMTAB_TO_SYMTAB (ps
);
1431 for (i
= 0; i
< b
->nsyms
; i
++)
1433 fixup_symbol_section (b
->sym
[i
], objfile
);
1434 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1438 continue; /* no symbol in this symtab matches section */
1440 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1449 ps
= find_pc_sect_psymtab (pc
, section
);
1453 /* Might want to error() here (in case symtab is corrupt and
1454 will cause a core dump), but maybe we can successfully
1455 continue, so let's not. */
1457 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1459 s
= PSYMTAB_TO_SYMTAB (ps
);
1464 /* Find the symtab associated with PC. Look through the psymtabs and
1465 read in another symtab if necessary. Backward compatibility, no section */
1468 find_pc_symtab (CORE_ADDR pc
)
1470 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1476 /* Find the closest symbol value (of any sort -- function or variable)
1477 for a given address value. Slow but complete. (currently unused,
1478 mainly because it is too slow. We could fix it if each symtab and
1479 psymtab had contained in it the addresses ranges of each of its
1480 sections, which also would be required to make things like "info
1481 line *0x2345" cause psymtabs to be converted to symtabs). */
1484 find_addr_symbol (CORE_ADDR addr
, struct symtab
**symtabp
, CORE_ADDR
*symaddrp
)
1486 struct symtab
*symtab
, *best_symtab
;
1487 struct objfile
*objfile
;
1488 register int bot
, top
;
1489 register struct symbol
*sym
;
1490 register CORE_ADDR sym_addr
;
1491 struct block
*block
;
1494 /* Info on best symbol seen so far */
1496 register CORE_ADDR best_sym_addr
= 0;
1497 struct symbol
*best_sym
= 0;
1499 /* FIXME -- we should pull in all the psymtabs, too! */
1500 ALL_SYMTABS (objfile
, symtab
)
1502 /* Search the global and static blocks in this symtab for
1503 the closest symbol-address to the desired address. */
1505 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1508 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1509 top
= BLOCK_NSYMS (block
);
1510 for (bot
= 0; bot
< top
; bot
++)
1512 sym
= BLOCK_SYM (block
, bot
);
1513 switch (SYMBOL_CLASS (sym
))
1517 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1521 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1522 /* An indirect symbol really lives at *sym_addr,
1523 * so an indirection needs to be done.
1524 * However, I am leaving this commented out because it's
1525 * expensive, and it's possible that symbolization
1526 * could be done without an active process (in
1527 * case this read_memory will fail). RT
1528 sym_addr = read_memory_unsigned_integer
1529 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1534 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1541 if (sym_addr
<= addr
)
1542 if (sym_addr
> best_sym_addr
)
1544 /* Quit if we found an exact match. */
1546 best_sym_addr
= sym_addr
;
1547 best_symtab
= symtab
;
1548 if (sym_addr
== addr
)
1557 *symtabp
= best_symtab
;
1559 *symaddrp
= best_sym_addr
;
1564 /* Find the source file and line number for a given PC value and SECTION.
1565 Return a structure containing a symtab pointer, a line number,
1566 and a pc range for the entire source line.
1567 The value's .pc field is NOT the specified pc.
1568 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1569 use the line that ends there. Otherwise, in that case, the line
1570 that begins there is used. */
1572 /* The big complication here is that a line may start in one file, and end just
1573 before the start of another file. This usually occurs when you #include
1574 code in the middle of a subroutine. To properly find the end of a line's PC
1575 range, we must search all symtabs associated with this compilation unit, and
1576 find the one whose first PC is closer than that of the next line in this
1579 /* If it's worth the effort, we could be using a binary search. */
1581 struct symtab_and_line
1582 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1585 register struct linetable
*l
;
1588 register struct linetable_entry
*item
;
1589 struct symtab_and_line val
;
1590 struct blockvector
*bv
;
1591 struct minimal_symbol
*msymbol
;
1592 struct minimal_symbol
*mfunsym
;
1594 /* Info on best line seen so far, and where it starts, and its file. */
1596 struct linetable_entry
*best
= NULL
;
1597 CORE_ADDR best_end
= 0;
1598 struct symtab
*best_symtab
= 0;
1600 /* Store here the first line number
1601 of a file which contains the line at the smallest pc after PC.
1602 If we don't find a line whose range contains PC,
1603 we will use a line one less than this,
1604 with a range from the start of that file to the first line's pc. */
1605 struct linetable_entry
*alt
= NULL
;
1606 struct symtab
*alt_symtab
= 0;
1608 /* Info on best line seen in this file. */
1610 struct linetable_entry
*prev
;
1612 /* If this pc is not from the current frame,
1613 it is the address of the end of a call instruction.
1614 Quite likely that is the start of the following statement.
1615 But what we want is the statement containing the instruction.
1616 Fudge the pc to make sure we get that. */
1618 INIT_SAL (&val
); /* initialize to zeroes */
1620 /* It's tempting to assume that, if we can't find debugging info for
1621 any function enclosing PC, that we shouldn't search for line
1622 number info, either. However, GAS can emit line number info for
1623 assembly files --- very helpful when debugging hand-written
1624 assembly code. In such a case, we'd have no debug info for the
1625 function, but we would have line info. */
1630 /* elz: added this because this function returned the wrong
1631 information if the pc belongs to a stub (import/export)
1632 to call a shlib function. This stub would be anywhere between
1633 two functions in the target, and the line info was erroneously
1634 taken to be the one of the line before the pc.
1636 /* RT: Further explanation:
1638 * We have stubs (trampolines) inserted between procedures.
1640 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1641 * exists in the main image.
1643 * In the minimal symbol table, we have a bunch of symbols
1644 * sorted by start address. The stubs are marked as "trampoline",
1645 * the others appear as text. E.g.:
1647 * Minimal symbol table for main image
1648 * main: code for main (text symbol)
1649 * shr1: stub (trampoline symbol)
1650 * foo: code for foo (text symbol)
1652 * Minimal symbol table for "shr1" image:
1654 * shr1: code for shr1 (text symbol)
1657 * So the code below is trying to detect if we are in the stub
1658 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1659 * and if found, do the symbolization from the real-code address
1660 * rather than the stub address.
1662 * Assumptions being made about the minimal symbol table:
1663 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1664 * if we're really in the trampoline. If we're beyond it (say
1665 * we're in "foo" in the above example), it'll have a closer
1666 * symbol (the "foo" text symbol for example) and will not
1667 * return the trampoline.
1668 * 2. lookup_minimal_symbol_text() will find a real text symbol
1669 * corresponding to the trampoline, and whose address will
1670 * be different than the trampoline address. I put in a sanity
1671 * check for the address being the same, to avoid an
1672 * infinite recursion.
1674 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1675 if (msymbol
!= NULL
)
1676 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1678 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1679 if (mfunsym
== NULL
)
1680 /* I eliminated this warning since it is coming out
1681 * in the following situation:
1682 * gdb shmain // test program with shared libraries
1683 * (gdb) break shr1 // function in shared lib
1684 * Warning: In stub for ...
1685 * In the above situation, the shared lib is not loaded yet,
1686 * so of course we can't find the real func/line info,
1687 * but the "break" still works, and the warning is annoying.
1688 * So I commented out the warning. RT */
1689 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1691 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1692 /* Avoid infinite recursion */
1693 /* See above comment about why warning is commented out */
1694 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1697 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1701 s
= find_pc_sect_symtab (pc
, section
);
1704 /* if no symbol information, return previous pc */
1711 bv
= BLOCKVECTOR (s
);
1713 /* Look at all the symtabs that share this blockvector.
1714 They all have the same apriori range, that we found was right;
1715 but they have different line tables. */
1717 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1719 /* Find the best line in this symtab. */
1726 /* I think len can be zero if the symtab lacks line numbers
1727 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1728 I'm not sure which, and maybe it depends on the symbol
1734 item
= l
->item
; /* Get first line info */
1736 /* Is this file's first line closer than the first lines of other files?
1737 If so, record this file, and its first line, as best alternate. */
1738 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1744 for (i
= 0; i
< len
; i
++, item
++)
1746 /* Leave prev pointing to the linetable entry for the last line
1747 that started at or before PC. */
1754 /* At this point, prev points at the line whose start addr is <= pc, and
1755 item points at the next line. If we ran off the end of the linetable
1756 (pc >= start of the last line), then prev == item. If pc < start of
1757 the first line, prev will not be set. */
1759 /* Is this file's best line closer than the best in the other files?
1760 If so, record this file, and its best line, as best so far. */
1762 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1767 /* Discard BEST_END if it's before the PC of the current BEST. */
1768 if (best_end
<= best
->pc
)
1772 /* If another line (denoted by ITEM) is in the linetable and its
1773 PC is after BEST's PC, but before the current BEST_END, then
1774 use ITEM's PC as the new best_end. */
1775 if (best
&& i
< len
&& item
->pc
> best
->pc
1776 && (best_end
== 0 || best_end
> item
->pc
))
1777 best_end
= item
->pc
;
1783 { /* If we didn't find any line # info, just
1789 val
.symtab
= alt_symtab
;
1790 val
.line
= alt
->line
- 1;
1792 /* Don't return line 0, that means that we didn't find the line. */
1796 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1802 val
.symtab
= best_symtab
;
1803 val
.line
= best
->line
;
1805 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1810 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1812 val
.section
= section
;
1816 /* Backward compatibility (no section) */
1818 struct symtab_and_line
1819 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1823 section
= find_pc_overlay (pc
);
1824 if (pc_in_unmapped_range (pc
, section
))
1825 pc
= overlay_mapped_address (pc
, section
);
1826 return find_pc_sect_line (pc
, section
, notcurrent
);
1829 /* Find line number LINE in any symtab whose name is the same as
1832 If found, return the symtab that contains the linetable in which it was
1833 found, set *INDEX to the index in the linetable of the best entry
1834 found, and set *EXACT_MATCH nonzero if the value returned is an
1837 If not found, return NULL. */
1840 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1844 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1848 struct linetable
*best_linetable
;
1849 struct symtab
*best_symtab
;
1851 /* First try looking it up in the given symtab. */
1852 best_linetable
= LINETABLE (symtab
);
1853 best_symtab
= symtab
;
1854 best_index
= find_line_common (best_linetable
, line
, &exact
);
1855 if (best_index
< 0 || !exact
)
1857 /* Didn't find an exact match. So we better keep looking for
1858 another symtab with the same name. In the case of xcoff,
1859 multiple csects for one source file (produced by IBM's FORTRAN
1860 compiler) produce multiple symtabs (this is unavoidable
1861 assuming csects can be at arbitrary places in memory and that
1862 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1864 /* BEST is the smallest linenumber > LINE so far seen,
1865 or 0 if none has been seen so far.
1866 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1869 struct objfile
*objfile
;
1872 if (best_index
>= 0)
1873 best
= best_linetable
->item
[best_index
].line
;
1877 ALL_SYMTABS (objfile
, s
)
1879 struct linetable
*l
;
1882 if (!STREQ (symtab
->filename
, s
->filename
))
1885 ind
= find_line_common (l
, line
, &exact
);
1895 if (best
== 0 || l
->item
[ind
].line
< best
)
1897 best
= l
->item
[ind
].line
;
1910 *index
= best_index
;
1912 *exact_match
= exact
;
1917 /* Set the PC value for a given source file and line number and return true.
1918 Returns zero for invalid line number (and sets the PC to 0).
1919 The source file is specified with a struct symtab. */
1922 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
1924 struct linetable
*l
;
1931 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1934 l
= LINETABLE (symtab
);
1935 *pc
= l
->item
[ind
].pc
;
1942 /* Find the range of pc values in a line.
1943 Store the starting pc of the line into *STARTPTR
1944 and the ending pc (start of next line) into *ENDPTR.
1945 Returns 1 to indicate success.
1946 Returns 0 if could not find the specified line. */
1949 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
1952 CORE_ADDR startaddr
;
1953 struct symtab_and_line found_sal
;
1956 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1959 /* This whole function is based on address. For example, if line 10 has
1960 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1961 "info line *0x123" should say the line goes from 0x100 to 0x200
1962 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1963 This also insures that we never give a range like "starts at 0x134
1964 and ends at 0x12c". */
1966 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1967 if (found_sal
.line
!= sal
.line
)
1969 /* The specified line (sal) has zero bytes. */
1970 *startptr
= found_sal
.pc
;
1971 *endptr
= found_sal
.pc
;
1975 *startptr
= found_sal
.pc
;
1976 *endptr
= found_sal
.end
;
1981 /* Given a line table and a line number, return the index into the line
1982 table for the pc of the nearest line whose number is >= the specified one.
1983 Return -1 if none is found. The value is >= 0 if it is an index.
1985 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
1988 find_line_common (register struct linetable
*l
, register int lineno
,
1994 /* BEST is the smallest linenumber > LINENO so far seen,
1995 or 0 if none has been seen so far.
1996 BEST_INDEX identifies the item for it. */
1998 int best_index
= -1;
2007 for (i
= 0; i
< len
; i
++)
2009 register struct linetable_entry
*item
= &(l
->item
[i
]);
2011 if (item
->line
== lineno
)
2013 /* Return the first (lowest address) entry which matches. */
2018 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2025 /* If we got here, we didn't get an exact match. */
2032 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2034 struct symtab_and_line sal
;
2035 sal
= find_pc_line (pc
, 0);
2038 return sal
.symtab
!= 0;
2041 /* Given a function symbol SYM, find the symtab and line for the start
2043 If the argument FUNFIRSTLINE is nonzero, we want the first line
2044 of real code inside the function. */
2046 struct symtab_and_line
2047 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2050 struct symtab_and_line sal
;
2052 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2053 fixup_symbol_section (sym
, NULL
);
2055 { /* skip "first line" of function (which is actually its prologue) */
2056 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2057 /* If function is in an unmapped overlay, use its unmapped LMA
2058 address, so that SKIP_PROLOGUE has something unique to work on */
2059 if (section_is_overlay (section
) &&
2060 !section_is_mapped (section
))
2061 pc
= overlay_unmapped_address (pc
, section
);
2063 pc
+= FUNCTION_START_OFFSET
;
2064 pc
= SKIP_PROLOGUE (pc
);
2066 /* For overlays, map pc back into its mapped VMA range */
2067 pc
= overlay_mapped_address (pc
, section
);
2069 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2071 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2072 /* Convex: no need to suppress code on first line, if any */
2075 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2076 line is still part of the same function. */
2078 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2079 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2081 /* First pc of next line */
2083 /* Recalculate the line number (might not be N+1). */
2084 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2092 /* If P is of the form "operator[ \t]+..." where `...' is
2093 some legitimate operator text, return a pointer to the
2094 beginning of the substring of the operator text.
2095 Otherwise, return "". */
2097 operator_chars (char *p
, char **end
)
2100 if (strncmp (p
, "operator", 8))
2104 /* Don't get faked out by `operator' being part of a longer
2106 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2109 /* Allow some whitespace between `operator' and the operator symbol. */
2110 while (*p
== ' ' || *p
== '\t')
2113 /* Recognize 'operator TYPENAME'. */
2115 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2117 register char *q
= p
+ 1;
2118 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2127 case '\\': /* regexp quoting */
2130 if (p
[2] == '=') /* 'operator\*=' */
2132 else /* 'operator\*' */
2136 else if (p
[1] == '[')
2139 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2140 else if (p
[2] == '\\' && p
[3] == ']')
2142 *end
= p
+ 4; /* 'operator\[\]' */
2146 error ("nothing is allowed between '[' and ']'");
2150 /* Gratuitous qoute: skip it and move on. */
2172 if (p
[0] == '-' && p
[1] == '>')
2174 /* Struct pointer member operator 'operator->'. */
2177 *end
= p
+ 3; /* 'operator->*' */
2180 else if (p
[2] == '\\')
2182 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2187 *end
= p
+ 2; /* 'operator->' */
2191 if (p
[1] == '=' || p
[1] == p
[0])
2202 error ("`operator ()' must be specified without whitespace in `()'");
2207 error ("`operator ?:' must be specified without whitespace in `?:'");
2212 error ("`operator []' must be specified without whitespace in `[]'");
2216 error ("`operator %s' not supported", p
);
2225 /* If FILE is not already in the table of files, return zero;
2226 otherwise return non-zero. Optionally add FILE to the table if ADD
2227 is non-zero. If *FIRST is non-zero, forget the old table
2230 filename_seen (const char *file
, int add
, int *first
)
2232 /* Table of files seen so far. */
2233 static const char **tab
= NULL
;
2234 /* Allocated size of tab in elements.
2235 Start with one 256-byte block (when using GNU malloc.c).
2236 24 is the malloc overhead when range checking is in effect. */
2237 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2238 /* Current size of tab in elements. */
2239 static int tab_cur_size
;
2245 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2249 /* Is FILE in tab? */
2250 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2251 if (strcmp (*p
, file
) == 0)
2254 /* No; maybe add it to tab. */
2257 if (tab_cur_size
== tab_alloc_size
)
2259 tab_alloc_size
*= 2;
2260 tab
= (const char **) xrealloc ((char *) tab
,
2261 tab_alloc_size
* sizeof (*tab
));
2263 tab
[tab_cur_size
++] = file
;
2269 /* Slave routine for sources_info. Force line breaks at ,'s.
2270 NAME is the name to print and *FIRST is nonzero if this is the first
2271 name printed. Set *FIRST to zero. */
2273 output_source_filename (char *name
, int *first
)
2275 /* Since a single source file can result in several partial symbol
2276 tables, we need to avoid printing it more than once. Note: if
2277 some of the psymtabs are read in and some are not, it gets
2278 printed both under "Source files for which symbols have been
2279 read" and "Source files for which symbols will be read in on
2280 demand". I consider this a reasonable way to deal with the
2281 situation. I'm not sure whether this can also happen for
2282 symtabs; it doesn't hurt to check. */
2284 /* Was NAME already seen? */
2285 if (filename_seen (name
, 1, first
))
2287 /* Yes; don't print it again. */
2290 /* No; print it and reset *FIRST. */
2297 printf_filtered (", ");
2301 fputs_filtered (name
, gdb_stdout
);
2305 sources_info (char *ignore
, int from_tty
)
2307 register struct symtab
*s
;
2308 register struct partial_symtab
*ps
;
2309 register struct objfile
*objfile
;
2312 if (!have_full_symbols () && !have_partial_symbols ())
2314 error ("No symbol table is loaded. Use the \"file\" command.");
2317 printf_filtered ("Source files for which symbols have been read in:\n\n");
2320 ALL_SYMTABS (objfile
, s
)
2322 output_source_filename (s
->filename
, &first
);
2324 printf_filtered ("\n\n");
2326 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2329 ALL_PSYMTABS (objfile
, ps
)
2333 output_source_filename (ps
->filename
, &first
);
2336 printf_filtered ("\n");
2340 file_matches (char *file
, char *files
[], int nfiles
)
2344 if (file
!= NULL
&& nfiles
!= 0)
2346 for (i
= 0; i
< nfiles
; i
++)
2348 if (strcmp (files
[i
], lbasename (file
)) == 0)
2352 else if (nfiles
== 0)
2357 /* Free any memory associated with a search. */
2359 free_search_symbols (struct symbol_search
*symbols
)
2361 struct symbol_search
*p
;
2362 struct symbol_search
*next
;
2364 for (p
= symbols
; p
!= NULL
; p
= next
)
2372 do_free_search_symbols_cleanup (void *symbols
)
2374 free_search_symbols (symbols
);
2378 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2380 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2384 /* Search the symbol table for matches to the regular expression REGEXP,
2385 returning the results in *MATCHES.
2387 Only symbols of KIND are searched:
2388 FUNCTIONS_NAMESPACE - search all functions
2389 TYPES_NAMESPACE - search all type names
2390 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2391 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2392 and constants (enums)
2394 free_search_symbols should be called when *MATCHES is no longer needed.
2397 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2398 struct symbol_search
**matches
)
2400 register struct symtab
*s
;
2401 register struct partial_symtab
*ps
;
2402 register struct blockvector
*bv
;
2403 struct blockvector
*prev_bv
= 0;
2404 register struct block
*b
;
2407 register struct symbol
*sym
;
2408 struct partial_symbol
**psym
;
2409 struct objfile
*objfile
;
2410 struct minimal_symbol
*msymbol
;
2413 static enum minimal_symbol_type types
[]
2415 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2416 static enum minimal_symbol_type types2
[]
2418 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2419 static enum minimal_symbol_type types3
[]
2421 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2422 static enum minimal_symbol_type types4
[]
2424 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2425 enum minimal_symbol_type ourtype
;
2426 enum minimal_symbol_type ourtype2
;
2427 enum minimal_symbol_type ourtype3
;
2428 enum minimal_symbol_type ourtype4
;
2429 struct symbol_search
*sr
;
2430 struct symbol_search
*psr
;
2431 struct symbol_search
*tail
;
2432 struct cleanup
*old_chain
= NULL
;
2434 if (kind
< VARIABLES_NAMESPACE
)
2435 error ("must search on specific namespace");
2437 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2438 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2439 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2440 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2442 sr
= *matches
= NULL
;
2447 /* Make sure spacing is right for C++ operators.
2448 This is just a courtesy to make the matching less sensitive
2449 to how many spaces the user leaves between 'operator'
2450 and <TYPENAME> or <OPERATOR>. */
2452 char *opname
= operator_chars (regexp
, &opend
);
2455 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2456 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2458 /* There should 1 space between 'operator' and 'TYPENAME'. */
2459 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2464 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2465 if (opname
[-1] == ' ')
2468 /* If wrong number of spaces, fix it. */
2471 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2472 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2477 if (0 != (val
= re_comp (regexp
)))
2478 error ("Invalid regexp (%s): %s", val
, regexp
);
2481 /* Search through the partial symtabs *first* for all symbols
2482 matching the regexp. That way we don't have to reproduce all of
2483 the machinery below. */
2485 ALL_PSYMTABS (objfile
, ps
)
2487 struct partial_symbol
**bound
, **gbound
, **sbound
;
2493 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2494 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2497 /* Go through all of the symbols stored in a partial
2498 symtab in one loop. */
2499 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2504 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2506 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2517 /* If it would match (logic taken from loop below)
2518 load the file and go on to the next one */
2519 if (file_matches (ps
->filename
, files
, nfiles
)
2520 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2521 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2522 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2523 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2524 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2525 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2527 PSYMTAB_TO_SYMTAB (ps
);
2535 /* Here, we search through the minimal symbol tables for functions
2536 and variables that match, and force their symbols to be read.
2537 This is in particular necessary for demangled variable names,
2538 which are no longer put into the partial symbol tables.
2539 The symbol will then be found during the scan of symtabs below.
2541 For functions, find_pc_symtab should succeed if we have debug info
2542 for the function, for variables we have to call lookup_symbol
2543 to determine if the variable has debug info.
2544 If the lookup fails, set found_misc so that we will rescan to print
2545 any matching symbols without debug info.
2548 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2550 ALL_MSYMBOLS (objfile
, msymbol
)
2552 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2553 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2554 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2555 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2557 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2559 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2561 if (kind
== FUNCTIONS_NAMESPACE
2562 || lookup_symbol (SYMBOL_NAME (msymbol
),
2563 (struct block
*) NULL
,
2565 0, (struct symtab
**) NULL
) == NULL
)
2573 ALL_SYMTABS (objfile
, s
)
2575 bv
= BLOCKVECTOR (s
);
2576 /* Often many files share a blockvector.
2577 Scan each blockvector only once so that
2578 we don't get every symbol many times.
2579 It happens that the first symtab in the list
2580 for any given blockvector is the main file. */
2582 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2584 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2585 /* Skip the sort if this block is always sorted. */
2586 if (!BLOCK_SHOULD_SORT (b
))
2587 sort_block_syms (b
);
2588 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
2591 sym
= BLOCK_SYM (b
, j
);
2592 if (file_matches (s
->filename
, files
, nfiles
)
2593 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2594 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2595 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2596 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2597 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2598 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2599 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2602 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2606 psr
->msymbol
= NULL
;
2611 old_chain
= make_cleanup_free_search_symbols (sr
);
2622 /* If there are no eyes, avoid all contact. I mean, if there are
2623 no debug symbols, then print directly from the msymbol_vector. */
2625 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2627 ALL_MSYMBOLS (objfile
, msymbol
)
2629 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2630 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2631 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2632 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2634 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2636 /* Functions: Look up by address. */
2637 if (kind
!= FUNCTIONS_NAMESPACE
||
2638 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2640 /* Variables/Absolutes: Look up by name */
2641 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2642 (struct block
*) NULL
, VAR_NAMESPACE
,
2643 0, (struct symtab
**) NULL
) == NULL
)
2646 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2648 psr
->msymbol
= msymbol
;
2655 old_chain
= make_cleanup_free_search_symbols (sr
);
2669 discard_cleanups (old_chain
);
2672 /* Helper function for symtab_symbol_info, this function uses
2673 the data returned from search_symbols() to print information
2674 regarding the match to gdb_stdout.
2677 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
2678 int block
, char *last
)
2680 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
2682 fputs_filtered ("\nFile ", gdb_stdout
);
2683 fputs_filtered (s
->filename
, gdb_stdout
);
2684 fputs_filtered (":\n", gdb_stdout
);
2687 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
2688 printf_filtered ("static ");
2690 /* Typedef that is not a C++ class */
2691 if (kind
== TYPES_NAMESPACE
2692 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
2693 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
2694 /* variable, func, or typedef-that-is-c++-class */
2695 else if (kind
< TYPES_NAMESPACE
||
2696 (kind
== TYPES_NAMESPACE
&&
2697 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
2699 type_print (SYMBOL_TYPE (sym
),
2700 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
2701 ? "" : SYMBOL_SOURCE_NAME (sym
)),
2704 printf_filtered (";\n");
2709 /* Tiemann says: "info methods was never implemented." */
2710 char *demangled_name
;
2711 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
2713 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
2715 if (TYPE_FN_FIELD_STUB (t
, block
))
2716 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
2718 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
2719 DMGL_ANSI
| DMGL_PARAMS
);
2720 if (demangled_name
== NULL
)
2721 fprintf_filtered (stream
, "<badly mangled name %s>",
2722 TYPE_FN_FIELD_PHYSNAME (t
, block
));
2725 fputs_filtered (demangled_name
, stream
);
2726 xfree (demangled_name
);
2732 /* This help function for symtab_symbol_info() prints information
2733 for non-debugging symbols to gdb_stdout.
2736 print_msymbol_info (struct minimal_symbol
*msymbol
)
2740 if (TARGET_ADDR_BIT
<= 32)
2741 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
2742 & (CORE_ADDR
) 0xffffffff,
2745 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
2747 printf_filtered ("%s %s\n",
2748 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
2751 /* This is the guts of the commands "info functions", "info types", and
2752 "info variables". It calls search_symbols to find all matches and then
2753 print_[m]symbol_info to print out some useful information about the
2757 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
2759 static char *classnames
[]
2761 {"variable", "function", "type", "method"};
2762 struct symbol_search
*symbols
;
2763 struct symbol_search
*p
;
2764 struct cleanup
*old_chain
;
2765 char *last_filename
= NULL
;
2768 /* must make sure that if we're interrupted, symbols gets freed */
2769 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
2770 old_chain
= make_cleanup_free_search_symbols (symbols
);
2772 printf_filtered (regexp
2773 ? "All %ss matching regular expression \"%s\":\n"
2774 : "All defined %ss:\n",
2775 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
2777 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
2781 if (p
->msymbol
!= NULL
)
2785 printf_filtered ("\nNon-debugging symbols:\n");
2788 print_msymbol_info (p
->msymbol
);
2792 print_symbol_info (kind
,
2797 last_filename
= p
->symtab
->filename
;
2801 do_cleanups (old_chain
);
2805 variables_info (char *regexp
, int from_tty
)
2807 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
2811 functions_info (char *regexp
, int from_tty
)
2813 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
2818 types_info (char *regexp
, int from_tty
)
2820 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
2824 /* Tiemann says: "info methods was never implemented." */
2826 methods_info (char *regexp
)
2828 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
2832 /* Breakpoint all functions matching regular expression. */
2835 rbreak_command_wrapper (char *regexp
, int from_tty
)
2837 rbreak_command (regexp
, from_tty
);
2841 rbreak_command (char *regexp
, int from_tty
)
2843 struct symbol_search
*ss
;
2844 struct symbol_search
*p
;
2845 struct cleanup
*old_chain
;
2847 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
2848 old_chain
= make_cleanup_free_search_symbols (ss
);
2850 for (p
= ss
; p
!= NULL
; p
= p
->next
)
2852 if (p
->msymbol
== NULL
)
2854 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
2855 + strlen (SYMBOL_NAME (p
->symbol
))
2857 strcpy (string
, p
->symtab
->filename
);
2858 strcat (string
, ":'");
2859 strcat (string
, SYMBOL_NAME (p
->symbol
));
2860 strcat (string
, "'");
2861 break_command (string
, from_tty
);
2862 print_symbol_info (FUNCTIONS_NAMESPACE
,
2866 p
->symtab
->filename
);
2870 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
2871 printf_filtered ("<function, no debug info> %s;\n",
2872 SYMBOL_SOURCE_NAME (p
->msymbol
));
2876 do_cleanups (old_chain
);
2880 /* Return Nonzero if block a is lexically nested within block b,
2881 or if a and b have the same pc range.
2882 Return zero otherwise. */
2884 contained_in (struct block
*a
, struct block
*b
)
2888 return BLOCK_START (a
) >= BLOCK_START (b
)
2889 && BLOCK_END (a
) <= BLOCK_END (b
);
2893 /* Helper routine for make_symbol_completion_list. */
2895 static int return_val_size
;
2896 static int return_val_index
;
2897 static char **return_val
;
2899 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
2901 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
2902 /* Put only the mangled name on the list. */ \
2903 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
2904 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
2905 completion_list_add_name \
2906 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
2908 completion_list_add_name \
2909 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
2912 /* Test to see if the symbol specified by SYMNAME (which is already
2913 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
2914 characters. If so, add it to the current completion list. */
2917 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
2918 char *text
, char *word
)
2923 /* clip symbols that cannot match */
2925 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
2930 /* We have a match for a completion, so add SYMNAME to the current list
2931 of matches. Note that the name is moved to freshly malloc'd space. */
2935 if (word
== sym_text
)
2937 new = xmalloc (strlen (symname
) + 5);
2938 strcpy (new, symname
);
2940 else if (word
> sym_text
)
2942 /* Return some portion of symname. */
2943 new = xmalloc (strlen (symname
) + 5);
2944 strcpy (new, symname
+ (word
- sym_text
));
2948 /* Return some of SYM_TEXT plus symname. */
2949 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
2950 strncpy (new, word
, sym_text
- word
);
2951 new[sym_text
- word
] = '\0';
2952 strcat (new, symname
);
2955 if (return_val_index
+ 3 > return_val_size
)
2957 newsize
= (return_val_size
*= 2) * sizeof (char *);
2958 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
2960 return_val
[return_val_index
++] = new;
2961 return_val
[return_val_index
] = NULL
;
2965 /* Return a NULL terminated array of all symbols (regardless of class)
2966 which begin by matching TEXT. If the answer is no symbols, then
2967 the return value is an array which contains only a NULL pointer.
2969 Problem: All of the symbols have to be copied because readline frees them.
2970 I'm not going to worry about this; hopefully there won't be that many. */
2973 make_symbol_completion_list (char *text
, char *word
)
2975 register struct symbol
*sym
;
2976 register struct symtab
*s
;
2977 register struct partial_symtab
*ps
;
2978 register struct minimal_symbol
*msymbol
;
2979 register struct objfile
*objfile
;
2980 register struct block
*b
, *surrounding_static_block
= 0;
2982 struct partial_symbol
**psym
;
2983 /* The symbol we are completing on. Points in same buffer as text. */
2985 /* Length of sym_text. */
2988 /* Now look for the symbol we are supposed to complete on.
2989 FIXME: This should be language-specific. */
2993 char *quote_pos
= NULL
;
2995 /* First see if this is a quoted string. */
2997 for (p
= text
; *p
!= '\0'; ++p
)
2999 if (quote_found
!= '\0')
3001 if (*p
== quote_found
)
3002 /* Found close quote. */
3004 else if (*p
== '\\' && p
[1] == quote_found
)
3005 /* A backslash followed by the quote character
3006 doesn't end the string. */
3009 else if (*p
== '\'' || *p
== '"')
3015 if (quote_found
== '\'')
3016 /* A string within single quotes can be a symbol, so complete on it. */
3017 sym_text
= quote_pos
+ 1;
3018 else if (quote_found
== '"')
3019 /* A double-quoted string is never a symbol, nor does it make sense
3020 to complete it any other way. */
3022 return_val
= (char **) xmalloc (sizeof (char *));
3023 return_val
[0] = NULL
;
3028 /* It is not a quoted string. Break it based on the characters
3029 which are in symbols. */
3032 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3041 sym_text_len
= strlen (sym_text
);
3043 return_val_size
= 100;
3044 return_val_index
= 0;
3045 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3046 return_val
[0] = NULL
;
3048 /* Look through the partial symtabs for all symbols which begin
3049 by matching SYM_TEXT. Add each one that you find to the list. */
3051 ALL_PSYMTABS (objfile
, ps
)
3053 /* If the psymtab's been read in we'll get it when we search
3054 through the blockvector. */
3058 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3059 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3060 + ps
->n_global_syms
);
3063 /* If interrupted, then quit. */
3065 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3068 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3069 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3070 + ps
->n_static_syms
);
3074 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3078 /* At this point scan through the misc symbol vectors and add each
3079 symbol you find to the list. Eventually we want to ignore
3080 anything that isn't a text symbol (everything else will be
3081 handled by the psymtab code above). */
3083 ALL_MSYMBOLS (objfile
, msymbol
)
3086 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3089 /* Search upwards from currently selected frame (so that we can
3090 complete on local vars. */
3092 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3094 if (!BLOCK_SUPERBLOCK (b
))
3096 surrounding_static_block
= b
; /* For elmin of dups */
3099 /* Also catch fields of types defined in this places which match our
3100 text string. Only complete on types visible from current context. */
3102 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3104 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3105 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3107 struct type
*t
= SYMBOL_TYPE (sym
);
3108 enum type_code c
= TYPE_CODE (t
);
3110 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3112 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3114 if (TYPE_FIELD_NAME (t
, j
))
3116 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3117 sym_text
, sym_text_len
, text
, word
);
3125 /* Go through the symtabs and check the externs and statics for
3126 symbols which match. */
3128 ALL_SYMTABS (objfile
, s
)
3131 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3132 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3134 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3138 ALL_SYMTABS (objfile
, s
)
3141 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3142 /* Don't do this block twice. */
3143 if (b
== surrounding_static_block
)
3145 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3147 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3151 return (return_val
);
3154 /* Like make_symbol_completion_list, but returns a list of symbols
3155 defined in a source file FILE. */
3158 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3160 register struct symbol
*sym
;
3161 register struct symtab
*s
;
3162 register struct block
*b
;
3164 /* The symbol we are completing on. Points in same buffer as text. */
3166 /* Length of sym_text. */
3169 /* Now look for the symbol we are supposed to complete on.
3170 FIXME: This should be language-specific. */
3174 char *quote_pos
= NULL
;
3176 /* First see if this is a quoted string. */
3178 for (p
= text
; *p
!= '\0'; ++p
)
3180 if (quote_found
!= '\0')
3182 if (*p
== quote_found
)
3183 /* Found close quote. */
3185 else if (*p
== '\\' && p
[1] == quote_found
)
3186 /* A backslash followed by the quote character
3187 doesn't end the string. */
3190 else if (*p
== '\'' || *p
== '"')
3196 if (quote_found
== '\'')
3197 /* A string within single quotes can be a symbol, so complete on it. */
3198 sym_text
= quote_pos
+ 1;
3199 else if (quote_found
== '"')
3200 /* A double-quoted string is never a symbol, nor does it make sense
3201 to complete it any other way. */
3203 return_val
= (char **) xmalloc (sizeof (char *));
3204 return_val
[0] = NULL
;
3209 /* It is not a quoted string. Break it based on the characters
3210 which are in symbols. */
3213 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3222 sym_text_len
= strlen (sym_text
);
3224 return_val_size
= 10;
3225 return_val_index
= 0;
3226 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3227 return_val
[0] = NULL
;
3229 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3231 s
= lookup_symtab (srcfile
);
3234 /* Maybe they typed the file with leading directories, while the
3235 symbol tables record only its basename. */
3236 const char *tail
= lbasename (srcfile
);
3239 s
= lookup_symtab (tail
);
3242 /* If we have no symtab for that file, return an empty list. */
3244 return (return_val
);
3246 /* Go through this symtab and check the externs and statics for
3247 symbols which match. */
3249 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3250 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3252 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3255 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3256 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3258 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3261 return (return_val
);
3264 /* A helper function for make_source_files_completion_list. It adds
3265 another file name to a list of possible completions, growing the
3266 list as necessary. */
3269 add_filename_to_list (const char *fname
, char *text
, char *word
,
3270 char ***list
, int *list_used
, int *list_alloced
)
3273 size_t fnlen
= strlen (fname
);
3275 if (*list_used
+ 1 >= *list_alloced
)
3278 *list
= (char **) xrealloc ((char *) *list
,
3279 *list_alloced
* sizeof (char *));
3284 /* Return exactly fname. */
3285 new = xmalloc (fnlen
+ 5);
3286 strcpy (new, fname
);
3288 else if (word
> text
)
3290 /* Return some portion of fname. */
3291 new = xmalloc (fnlen
+ 5);
3292 strcpy (new, fname
+ (word
- text
));
3296 /* Return some of TEXT plus fname. */
3297 new = xmalloc (fnlen
+ (text
- word
) + 5);
3298 strncpy (new, word
, text
- word
);
3299 new[text
- word
] = '\0';
3300 strcat (new, fname
);
3302 (*list
)[*list_used
] = new;
3303 (*list
)[++*list_used
] = NULL
;
3307 not_interesting_fname (const char *fname
)
3309 static const char *illegal_aliens
[] = {
3310 "_globals_", /* inserted by coff_symtab_read */
3315 for (i
= 0; illegal_aliens
[i
]; i
++)
3317 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3323 /* Return a NULL terminated array of all source files whose names
3324 begin with matching TEXT. The file names are looked up in the
3325 symbol tables of this program. If the answer is no matchess, then
3326 the return value is an array which contains only a NULL pointer. */
3329 make_source_files_completion_list (char *text
, char *word
)
3331 register struct symtab
*s
;
3332 register struct partial_symtab
*ps
;
3333 register struct objfile
*objfile
;
3335 int list_alloced
= 1;
3337 size_t text_len
= strlen (text
);
3338 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3339 const char *base_name
;
3343 if (!have_full_symbols () && !have_partial_symbols ())
3346 ALL_SYMTABS (objfile
, s
)
3348 if (not_interesting_fname (s
->filename
))
3350 if (!filename_seen (s
->filename
, 1, &first
)
3351 #if HAVE_DOS_BASED_FILE_SYSTEM
3352 && strncasecmp (s
->filename
, text
, text_len
) == 0
3354 && strncmp (s
->filename
, text
, text_len
) == 0
3358 /* This file matches for a completion; add it to the current
3360 add_filename_to_list (s
->filename
, text
, word
,
3361 &list
, &list_used
, &list_alloced
);
3365 /* NOTE: We allow the user to type a base name when the
3366 debug info records leading directories, but not the other
3367 way around. This is what subroutines of breakpoint
3368 command do when they parse file names. */
3369 base_name
= lbasename (s
->filename
);
3370 if (base_name
!= s
->filename
3371 && !filename_seen (base_name
, 1, &first
)
3372 #if HAVE_DOS_BASED_FILE_SYSTEM
3373 && strncasecmp (base_name
, text
, text_len
) == 0
3375 && strncmp (base_name
, text
, text_len
) == 0
3378 add_filename_to_list (base_name
, text
, word
,
3379 &list
, &list_used
, &list_alloced
);
3383 ALL_PSYMTABS (objfile
, ps
)
3385 if (not_interesting_fname (ps
->filename
))
3389 if (!filename_seen (ps
->filename
, 1, &first
)
3390 #if HAVE_DOS_BASED_FILE_SYSTEM
3391 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3393 && strncmp (ps
->filename
, text
, text_len
) == 0
3397 /* This file matches for a completion; add it to the
3398 current list of matches. */
3399 add_filename_to_list (ps
->filename
, text
, word
,
3400 &list
, &list_used
, &list_alloced
);
3405 base_name
= lbasename (ps
->filename
);
3406 if (base_name
!= ps
->filename
3407 && !filename_seen (base_name
, 1, &first
)
3408 #if HAVE_DOS_BASED_FILE_SYSTEM
3409 && strncasecmp (base_name
, text
, text_len
) == 0
3411 && strncmp (base_name
, text
, text_len
) == 0
3414 add_filename_to_list (base_name
, text
, word
,
3415 &list
, &list_used
, &list_alloced
);
3423 /* Determine if PC is in the prologue of a function. The prologue is the area
3424 between the first instruction of a function, and the first executable line.
3425 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3427 If non-zero, func_start is where we think the prologue starts, possibly
3428 by previous examination of symbol table information.
3432 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3434 struct symtab_and_line sal
;
3435 CORE_ADDR func_addr
, func_end
;
3437 /* We have several sources of information we can consult to figure
3439 - Compilers usually emit line number info that marks the prologue
3440 as its own "source line". So the ending address of that "line"
3441 is the end of the prologue. If available, this is the most
3443 - The minimal symbols and partial symbols, which can usually tell
3444 us the starting and ending addresses of a function.
3445 - If we know the function's start address, we can call the
3446 architecture-defined SKIP_PROLOGUE function to analyze the
3447 instruction stream and guess where the prologue ends.
3448 - Our `func_start' argument; if non-zero, this is the caller's
3449 best guess as to the function's entry point. At the time of
3450 this writing, handle_inferior_event doesn't get this right, so
3451 it should be our last resort. */
3453 /* Consult the partial symbol table, to find which function
3455 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3457 CORE_ADDR prologue_end
;
3459 /* We don't even have minsym information, so fall back to using
3460 func_start, if given. */
3462 return 1; /* We *might* be in a prologue. */
3464 prologue_end
= SKIP_PROLOGUE (func_start
);
3466 return func_start
<= pc
&& pc
< prologue_end
;
3469 /* If we have line number information for the function, that's
3470 usually pretty reliable. */
3471 sal
= find_pc_line (func_addr
, 0);
3473 /* Now sal describes the source line at the function's entry point,
3474 which (by convention) is the prologue. The end of that "line",
3475 sal.end, is the end of the prologue.
3477 Note that, for functions whose source code is all on a single
3478 line, the line number information doesn't always end up this way.
3479 So we must verify that our purported end-of-prologue address is
3480 *within* the function, not at its start or end. */
3482 || sal
.end
<= func_addr
3483 || func_end
<= sal
.end
)
3485 /* We don't have any good line number info, so use the minsym
3486 information, together with the architecture-specific prologue
3488 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3490 return func_addr
<= pc
&& pc
< prologue_end
;
3493 /* We have line number info, and it looks good. */
3494 return func_addr
<= pc
&& pc
< sal
.end
;
3498 /* Begin overload resolution functions */
3499 /* Helper routine for make_symbol_completion_list. */
3501 static int sym_return_val_size
;
3502 static int sym_return_val_index
;
3503 static struct symbol
**sym_return_val
;
3505 /* Test to see if the symbol specified by SYMNAME (which is already
3506 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3507 characters. If so, add it to the current completion list. */
3510 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3515 /* Get the demangled name without parameters */
3516 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
3519 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
3520 strcpy (sym_name
, SYMBOL_NAME (sym
));
3523 /* skip symbols that cannot match */
3524 if (strcmp (sym_name
, oload_name
) != 0)
3530 /* If there is no type information, we can't do anything, so skip */
3531 if (SYMBOL_TYPE (sym
) == NULL
)
3534 /* skip any symbols that we've already considered. */
3535 for (i
= 0; i
< sym_return_val_index
; ++i
)
3536 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3539 /* We have a match for an overload instance, so add SYM to the current list
3540 * of overload instances */
3541 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3543 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3544 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3546 sym_return_val
[sym_return_val_index
++] = sym
;
3547 sym_return_val
[sym_return_val_index
] = NULL
;
3552 /* Return a null-terminated list of pointers to function symbols that
3553 * match name of the supplied symbol FSYM.
3554 * This is used in finding all overloaded instances of a function name.
3555 * This has been modified from make_symbol_completion_list. */
3559 make_symbol_overload_list (struct symbol
*fsym
)
3561 register struct symbol
*sym
;
3562 register struct symtab
*s
;
3563 register struct partial_symtab
*ps
;
3564 register struct objfile
*objfile
;
3565 register struct block
*b
, *surrounding_static_block
= 0;
3567 /* The name we are completing on. */
3568 char *oload_name
= NULL
;
3569 /* Length of name. */
3570 int oload_name_len
= 0;
3572 /* Look for the symbol we are supposed to complete on.
3573 * FIXME: This should be language-specific. */
3575 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
3578 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
3579 strcpy (oload_name
, SYMBOL_NAME (fsym
));
3581 oload_name_len
= strlen (oload_name
);
3583 sym_return_val_size
= 100;
3584 sym_return_val_index
= 0;
3585 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3586 sym_return_val
[0] = NULL
;
3588 /* Look through the partial symtabs for all symbols which begin
3589 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3591 ALL_PSYMTABS (objfile
, ps
)
3593 struct partial_symbol
**psym
;
3595 /* If the psymtab's been read in we'll get it when we search
3596 through the blockvector. */
3600 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3601 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3602 + ps
->n_global_syms
);
3605 /* If interrupted, then quit. */
3607 /* This will cause the symbol table to be read if it has not yet been */
3608 s
= PSYMTAB_TO_SYMTAB (ps
);
3611 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3612 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3613 + ps
->n_static_syms
);
3617 /* This will cause the symbol table to be read if it has not yet been */
3618 s
= PSYMTAB_TO_SYMTAB (ps
);
3622 /* Search upwards from currently selected frame (so that we can
3623 complete on local vars. */
3625 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3627 if (!BLOCK_SUPERBLOCK (b
))
3629 surrounding_static_block
= b
; /* For elimination of dups */
3632 /* Also catch fields of types defined in this places which match our
3633 text string. Only complete on types visible from current context. */
3635 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3637 overload_list_add_symbol (sym
, oload_name
);
3641 /* Go through the symtabs and check the externs and statics for
3642 symbols which match. */
3644 ALL_SYMTABS (objfile
, s
)
3647 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3648 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3650 overload_list_add_symbol (sym
, oload_name
);
3654 ALL_SYMTABS (objfile
, s
)
3657 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3658 /* Don't do this block twice. */
3659 if (b
== surrounding_static_block
)
3661 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3663 overload_list_add_symbol (sym
, oload_name
);
3669 return (sym_return_val
);
3672 /* End of overload resolution functions */
3674 struct symtabs_and_lines
3675 decode_line_spec (char *string
, int funfirstline
)
3677 struct symtabs_and_lines sals
;
3679 error ("Empty line specification.");
3680 sals
= decode_line_1 (&string
, funfirstline
,
3681 current_source_symtab
, current_source_line
,
3684 error ("Junk at end of line specification: %s", string
);
3689 static char *name_of_main
;
3692 set_main_name (const char *name
)
3694 if (name_of_main
!= NULL
)
3696 xfree (name_of_main
);
3697 name_of_main
= NULL
;
3701 name_of_main
= xstrdup (name
);
3708 if (name_of_main
!= NULL
)
3709 return name_of_main
;
3716 _initialize_symtab (void)
3718 add_info ("variables", variables_info
,
3719 "All global and static variable names, or those matching REGEXP.");
3721 add_com ("whereis", class_info
, variables_info
,
3722 "All global and static variable names, or those matching REGEXP.");
3724 add_info ("functions", functions_info
,
3725 "All function names, or those matching REGEXP.");
3728 /* FIXME: This command has at least the following problems:
3729 1. It prints builtin types (in a very strange and confusing fashion).
3730 2. It doesn't print right, e.g. with
3731 typedef struct foo *FOO
3732 type_print prints "FOO" when we want to make it (in this situation)
3733 print "struct foo *".
3734 I also think "ptype" or "whatis" is more likely to be useful (but if
3735 there is much disagreement "info types" can be fixed). */
3736 add_info ("types", types_info
,
3737 "All type names, or those matching REGEXP.");
3740 add_info ("methods", methods_info
,
3741 "All method names, or those matching REGEXP::REGEXP.\n\
3742 If the class qualifier is omitted, it is assumed to be the current scope.\n\
3743 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
3746 add_info ("sources", sources_info
,
3747 "Source files in the program.");
3749 add_com ("rbreak", class_breakpoint
, rbreak_command
,
3750 "Set a breakpoint for all functions matching REGEXP.");
3754 add_com ("lf", class_info
, sources_info
, "Source files in the program");
3755 add_com ("lg", class_info
, variables_info
,
3756 "All global and static variable names, or those matching REGEXP.");
3759 /* Initialize the one built-in type that isn't language dependent... */
3760 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
3761 "<unknown type>", (struct objfile
*) NULL
);