1 /* Symbol table lookup for the GNU debugger, GDB.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
33 #include "call-cmds.h"
34 #include "gdb_regex.h"
35 #include "expression.h"
40 #include "filenames.h" /* for FILENAME_CMP */
44 #include <sys/types.h>
46 #include "gdb_string.h"
51 /* Prototype for one function in parser-defs.h,
52 instead of including that entire file. */
54 extern char *find_template_name_end (char *);
56 /* Prototypes for local functions */
58 static void completion_list_add_name (char *, char *, int, char *, char *);
60 static void rbreak_command (char *, int);
62 static void types_info (char *, int);
64 static void functions_info (char *, int);
66 static void variables_info (char *, int);
68 static void sources_info (char *, int);
70 static void output_source_filename (char *, int *);
72 static int find_line_common (struct linetable
*, int, int *);
74 /* This one is used by linespec.c */
76 char *operator_chars (char *p
, char **end
);
78 static struct partial_symbol
*lookup_partial_symbol (struct partial_symtab
*,
82 static struct symbol
*lookup_symbol_aux (const char *name
, const
83 struct block
*block
, const
84 namespace_enum
namespace, int
85 *is_a_field_of_this
, struct
89 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
91 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
92 /* Signals the presence of objects compiled by HP compilers */
93 int hp_som_som_object_present
= 0;
95 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
97 static int file_matches (char *, char **, int);
99 static void print_symbol_info (namespace_enum
,
100 struct symtab
*, struct symbol
*, int, char *);
102 static void print_msymbol_info (struct minimal_symbol
*);
104 static void symtab_symbol_info (char *, namespace_enum
, int);
106 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
108 void _initialize_symtab (void);
112 /* The single non-language-specific builtin type */
113 struct type
*builtin_type_error
;
115 /* Block in which the most recently searched-for symbol was found.
116 Might be better to make this a parameter to lookup_symbol and
119 const struct block
*block_found
;
121 /* While the C++ support is still in flux, issue a possibly helpful hint on
122 using the new command completion feature on single quoted demangled C++
123 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
126 cplusplus_hint (char *name
)
128 while (*name
== '\'')
130 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name
, name
);
131 printf_filtered ("(Note leading single quote.)\n");
134 /* Check for a symtab of a specific name; first in symtabs, then in
135 psymtabs. *If* there is no '/' in the name, a match after a '/'
136 in the symtab filename will also work. */
139 lookup_symtab (const char *name
)
141 register struct symtab
*s
;
142 register struct partial_symtab
*ps
;
143 register struct objfile
*objfile
;
144 char *real_path
= NULL
;
146 /* Here we are interested in canonicalizing an absolute path, not
147 absolutizing a relative path. */
148 if (IS_ABSOLUTE_PATH (name
))
149 real_path
= gdb_realpath (name
);
153 /* First, search for an exact match */
155 ALL_SYMTABS (objfile
, s
)
157 if (FILENAME_CMP (name
, s
->filename
) == 0)
162 /* If the user gave us an absolute path, try to find the file in
163 this symtab and use its absolute path. */
164 if (real_path
!= NULL
)
166 char *rp
= symtab_to_filename (s
);
167 if (FILENAME_CMP (real_path
, rp
) == 0)
177 /* Now, search for a matching tail (only if name doesn't have any dirs) */
179 if (lbasename (name
) == name
)
180 ALL_SYMTABS (objfile
, s
)
182 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
186 /* Same search rules as above apply here, but now we look thru the
189 ps
= lookup_partial_symtab (name
);
194 error ("Internal: readin %s pst for `%s' found when no symtab found.",
197 s
= PSYMTAB_TO_SYMTAB (ps
);
202 /* At this point, we have located the psymtab for this file, but
203 the conversion to a symtab has failed. This usually happens
204 when we are looking up an include file. In this case,
205 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
206 been created. So, we need to run through the symtabs again in
207 order to find the file.
208 XXX - This is a crock, and should be fixed inside of the the
209 symbol parsing routines. */
213 /* Lookup the partial symbol table of a source file named NAME.
214 *If* there is no '/' in the name, a match after a '/'
215 in the psymtab filename will also work. */
217 struct partial_symtab
*
218 lookup_partial_symtab (const char *name
)
220 register struct partial_symtab
*pst
;
221 register struct objfile
*objfile
;
222 char *real_path
= NULL
;
224 /* Here we are interested in canonicalizing an absolute path, not
225 absolutizing a relative path. */
226 if (IS_ABSOLUTE_PATH (name
))
227 real_path
= gdb_realpath (name
);
229 ALL_PSYMTABS (objfile
, pst
)
231 if (FILENAME_CMP (name
, pst
->filename
) == 0)
236 /* If the user gave us an absolute path, try to find the file in
237 this symtab and use its absolute path. */
238 if (real_path
!= NULL
)
240 if (pst
->fullname
== NULL
)
241 source_full_path_of (pst
->filename
, &pst
->fullname
);
242 if (pst
->fullname
!= NULL
243 && FILENAME_CMP (real_path
, pst
->fullname
) == 0)
253 /* Now, search for a matching tail (only if name doesn't have any dirs) */
255 if (lbasename (name
) == name
)
256 ALL_PSYMTABS (objfile
, pst
)
258 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
265 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
266 full method name, which consist of the class name (from T), the unadorned
267 method name from METHOD_ID, and the signature for the specific overload,
268 specified by SIGNATURE_ID. Note that this function is g++ specific. */
271 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
273 int mangled_name_len
;
275 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
276 struct fn_field
*method
= &f
[signature_id
];
277 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
278 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
279 char *newname
= type_name_no_tag (type
);
281 /* Does the form of physname indicate that it is the full mangled name
282 of a constructor (not just the args)? */
283 int is_full_physname_constructor
;
286 int is_destructor
= is_destructor_name (physname
);
287 /* Need a new type prefix. */
288 char *const_prefix
= method
->is_const
? "C" : "";
289 char *volatile_prefix
= method
->is_volatile
? "V" : "";
291 int len
= (newname
== NULL
? 0 : strlen (newname
));
293 if (is_operator_name (field_name
))
294 return xstrdup (physname
);
296 is_full_physname_constructor
= is_constructor_name (physname
);
299 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
302 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
304 if (is_destructor
|| is_full_physname_constructor
)
306 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
307 strcpy (mangled_name
, physname
);
313 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
315 else if (physname
[0] == 't' || physname
[0] == 'Q')
317 /* The physname for template and qualified methods already includes
319 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
325 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
327 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
328 + strlen (buf
) + len
+ strlen (physname
) + 1);
331 mangled_name
= (char *) xmalloc (mangled_name_len
);
333 mangled_name
[0] = '\0';
335 strcpy (mangled_name
, field_name
);
337 strcat (mangled_name
, buf
);
338 /* If the class doesn't have a name, i.e. newname NULL, then we just
339 mangle it using 0 for the length of the class. Thus it gets mangled
340 as something starting with `::' rather than `classname::'. */
342 strcat (mangled_name
, newname
);
344 strcat (mangled_name
, physname
);
345 return (mangled_name
);
350 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
352 struct partial_symtab
*
353 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
355 register struct partial_symtab
*pst
;
356 register struct objfile
*objfile
;
358 ALL_PSYMTABS (objfile
, pst
)
360 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
362 struct minimal_symbol
*msymbol
;
363 struct partial_symtab
*tpst
;
365 /* An objfile that has its functions reordered might have
366 many partial symbol tables containing the PC, but
367 we want the partial symbol table that contains the
368 function containing the PC. */
369 if (!(objfile
->flags
& OBJF_REORDERED
) &&
370 section
== 0) /* can't validate section this way */
373 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
377 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
379 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
381 struct partial_symbol
*p
;
383 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
385 && SYMBOL_VALUE_ADDRESS (p
)
386 == SYMBOL_VALUE_ADDRESS (msymbol
))
396 /* Find which partial symtab contains PC. Return 0 if none.
397 Backward compatibility, no section */
399 struct partial_symtab
*
400 find_pc_psymtab (CORE_ADDR pc
)
402 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
405 /* Find which partial symbol within a psymtab matches PC and SECTION.
406 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
408 struct partial_symbol
*
409 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
412 struct partial_symbol
*best
= NULL
, *p
, **pp
;
416 psymtab
= find_pc_sect_psymtab (pc
, section
);
420 /* Cope with programs that start at address 0 */
421 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
423 /* Search the global symbols as well as the static symbols, so that
424 find_pc_partial_function doesn't use a minimal symbol and thus
425 cache a bad endaddr. */
426 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
427 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
428 < psymtab
->n_global_syms
);
432 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
433 && SYMBOL_CLASS (p
) == LOC_BLOCK
434 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
435 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
436 || (psymtab
->textlow
== 0
437 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
439 if (section
) /* match on a specific section */
441 fixup_psymbol_section (p
, psymtab
->objfile
);
442 if (SYMBOL_BFD_SECTION (p
) != section
)
445 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
450 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
451 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
452 < psymtab
->n_static_syms
);
456 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
457 && SYMBOL_CLASS (p
) == LOC_BLOCK
458 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
459 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
460 || (psymtab
->textlow
== 0
461 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
463 if (section
) /* match on a specific section */
465 fixup_psymbol_section (p
, psymtab
->objfile
);
466 if (SYMBOL_BFD_SECTION (p
) != section
)
469 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
477 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
478 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
480 struct partial_symbol
*
481 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
483 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
486 /* Debug symbols usually don't have section information. We need to dig that
487 out of the minimal symbols and stash that in the debug symbol. */
490 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
492 struct minimal_symbol
*msym
;
493 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
497 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
498 ginfo
->section
= SYMBOL_SECTION (msym
);
503 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
508 if (SYMBOL_BFD_SECTION (sym
))
511 fixup_section (&sym
->ginfo
, objfile
);
516 struct partial_symbol
*
517 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
522 if (SYMBOL_BFD_SECTION (psym
))
525 fixup_section (&psym
->ginfo
, objfile
);
530 /* Find the definition for a specified symbol name NAME
531 in namespace NAMESPACE, visible from lexical block BLOCK.
532 Returns the struct symbol pointer, or zero if no symbol is found.
533 If SYMTAB is non-NULL, store the symbol table in which the
534 symbol was found there, or NULL if not found.
535 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
536 NAME is a field of the current implied argument `this'. If so set
537 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
538 BLOCK_FOUND is set to the block in which NAME is found (in the case of
539 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
541 /* This function has a bunch of loops in it and it would seem to be
542 attractive to put in some QUIT's (though I'm not really sure
543 whether it can run long enough to be really important). But there
544 are a few calls for which it would appear to be bad news to quit
545 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
546 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
547 code below which can error(), but that probably doesn't affect
548 these calls since they are looking for a known variable and thus
549 can probably assume it will never hit the C++ code). */
552 lookup_symbol (const char *name
, const struct block
*block
,
553 const namespace_enum
namespace, int *is_a_field_of_this
,
554 struct symtab
**symtab
)
556 char *modified_name
= NULL
;
557 char *modified_name2
= NULL
;
558 int needtofreename
= 0;
559 struct symbol
*returnval
;
561 if (case_sensitivity
== case_sensitive_off
)
567 copy
= (char *) alloca (len
+ 1);
568 for (i
= 0; i
< len
; i
++)
569 copy
[i
] = tolower (name
[i
]);
571 modified_name
= copy
;
574 modified_name
= (char *) name
;
576 /* If we are using C++ language, demangle the name before doing a lookup, so
577 we can always binary search. */
578 if (current_language
->la_language
== language_cplus
)
580 modified_name2
= cplus_demangle (modified_name
, DMGL_ANSI
| DMGL_PARAMS
);
583 modified_name
= modified_name2
;
588 returnval
= lookup_symbol_aux (modified_name
, block
, namespace,
589 is_a_field_of_this
, symtab
);
591 xfree (modified_name2
);
596 static struct symbol
*
597 lookup_symbol_aux (const char *name
, const struct block
*block
,
598 const namespace_enum
namespace, int *is_a_field_of_this
,
599 struct symtab
**symtab
)
601 register struct symbol
*sym
;
602 register struct symtab
*s
= NULL
;
603 register struct partial_symtab
*ps
;
604 register struct blockvector
*bv
;
605 register struct objfile
*objfile
= NULL
;
606 register struct block
*b
;
607 register struct minimal_symbol
*msymbol
;
610 /* Search specified block and its superiors. */
614 sym
= lookup_block_symbol (block
, name
, namespace);
620 /* Search the list of symtabs for one which contains the
621 address of the start of this block. */
622 ALL_SYMTABS (objfile
, s
)
624 bv
= BLOCKVECTOR (s
);
625 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
626 if (BLOCK_START (b
) <= BLOCK_START (block
)
627 && BLOCK_END (b
) > BLOCK_START (block
))
634 return fixup_symbol_section (sym
, objfile
);
636 block
= BLOCK_SUPERBLOCK (block
);
639 /* FIXME: this code is never executed--block is always NULL at this
640 point. What is it trying to do, anyway? We already should have
641 checked the STATIC_BLOCK above (it is the superblock of top-level
642 blocks). Why is VAR_NAMESPACE special-cased? */
643 /* Don't need to mess with the psymtabs; if we have a block,
644 that file is read in. If we don't, then we deal later with
645 all the psymtab stuff that needs checking. */
646 /* Note (RT): The following never-executed code looks unnecessary to me also.
647 * If we change the code to use the original (passed-in)
648 * value of 'block', we could cause it to execute, but then what
649 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
650 * 'block' was already searched by the above code. And the STATIC_BLOCK's
651 * of *other* symtabs (those files not containing 'block' lexically)
652 * should not contain 'block' address-wise. So we wouldn't expect this
653 * code to find any 'sym''s that were not found above. I vote for
654 * deleting the following paragraph of code.
656 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
659 /* Find the right symtab. */
660 ALL_SYMTABS (objfile
, s
)
662 bv
= BLOCKVECTOR (s
);
663 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
664 if (BLOCK_START (b
) <= BLOCK_START (block
)
665 && BLOCK_END (b
) > BLOCK_START (block
))
667 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
673 return fixup_symbol_section (sym
, objfile
);
680 /* C++: If requested to do so by the caller,
681 check to see if NAME is a field of `this'. */
682 if (is_a_field_of_this
)
684 struct value
*v
= value_of_this (0);
686 *is_a_field_of_this
= 0;
687 if (v
&& check_field (v
, name
))
689 *is_a_field_of_this
= 1;
696 /* Now search all global blocks. Do the symtab's first, then
697 check the psymtab's. If a psymtab indicates the existence
698 of the desired name as a global, then do psymtab-to-symtab
699 conversion on the fly and return the found symbol. */
701 ALL_SYMTABS (objfile
, s
)
703 bv
= BLOCKVECTOR (s
);
704 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
705 sym
= lookup_block_symbol (block
, name
, namespace);
711 return fixup_symbol_section (sym
, objfile
);
717 /* Check for the possibility of the symbol being a function or
718 a mangled variable that is stored in one of the minimal symbol tables.
719 Eventually, all global symbols might be resolved in this way. */
721 if (namespace == VAR_NAMESPACE
)
723 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
726 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
727 SYMBOL_BFD_SECTION (msymbol
));
730 /* This is a function which has a symtab for its address. */
731 bv
= BLOCKVECTOR (s
);
732 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
733 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
735 /* We kept static functions in minimal symbol table as well as
736 in static scope. We want to find them in the symbol table. */
739 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
740 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
744 /* sym == 0 if symbol was found in the minimal symbol table
745 but not in the symtab.
746 Return 0 to use the msymbol definition of "foo_".
748 This happens for Fortran "foo_" symbols,
749 which are "foo" in the symtab.
751 This can also happen if "asm" is used to make a
752 regular symbol but not a debugging symbol, e.g.
759 return fixup_symbol_section (sym
, objfile
);
761 else if (MSYMBOL_TYPE (msymbol
) != mst_text
762 && MSYMBOL_TYPE (msymbol
) != mst_file_text
763 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
765 /* This is a mangled variable, look it up by its
767 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
768 namespace, is_a_field_of_this
, symtab
);
770 /* There are no debug symbols for this file, or we are looking
771 for an unmangled variable.
772 Try to find a matching static symbol below. */
778 ALL_PSYMTABS (objfile
, ps
)
780 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
782 s
= PSYMTAB_TO_SYMTAB (ps
);
783 bv
= BLOCKVECTOR (s
);
784 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
785 sym
= lookup_block_symbol (block
, name
, namespace);
788 /* This shouldn't be necessary, but as a last resort
789 * try looking in the statics even though the psymtab
790 * claimed the symbol was global. It's possible that
791 * the psymtab gets it wrong in some cases.
793 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
794 sym
= lookup_block_symbol (block
, name
, namespace);
796 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
797 %s may be an inlined function, or may be a template function\n\
798 (if a template, try specifying an instantiation: %s<type>).",
799 name
, ps
->filename
, name
, name
);
803 return fixup_symbol_section (sym
, objfile
);
807 /* Now search all static file-level symbols.
808 Not strictly correct, but more useful than an error.
809 Do the symtabs first, then check the psymtabs.
810 If a psymtab indicates the existence
811 of the desired name as a file-level static, then do psymtab-to-symtab
812 conversion on the fly and return the found symbol. */
814 ALL_SYMTABS (objfile
, s
)
816 bv
= BLOCKVECTOR (s
);
817 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
818 sym
= lookup_block_symbol (block
, name
, namespace);
824 return fixup_symbol_section (sym
, objfile
);
828 ALL_PSYMTABS (objfile
, ps
)
830 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
832 s
= PSYMTAB_TO_SYMTAB (ps
);
833 bv
= BLOCKVECTOR (s
);
834 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
835 sym
= lookup_block_symbol (block
, name
, namespace);
838 /* This shouldn't be necessary, but as a last resort
839 * try looking in the globals even though the psymtab
840 * claimed the symbol was static. It's possible that
841 * the psymtab gets it wrong in some cases.
843 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
844 sym
= lookup_block_symbol (block
, name
, namespace);
846 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
847 %s may be an inlined function, or may be a template function\n\
848 (if a template, try specifying an instantiation: %s<type>).",
849 name
, ps
->filename
, name
, name
);
853 return fixup_symbol_section (sym
, objfile
);
859 /* Check for the possibility of the symbol being a function or
860 a global variable that is stored in one of the minimal symbol tables.
861 The "minimal symbol table" is built from linker-supplied info.
863 RT: I moved this check to last, after the complete search of
864 the global (p)symtab's and static (p)symtab's. For HP-generated
865 symbol tables, this check was causing a premature exit from
866 lookup_symbol with NULL return, and thus messing up symbol lookups
867 of things like "c::f". It seems to me a check of the minimal
868 symbol table ought to be a last resort in any case. I'm vaguely
869 worried about the comment below which talks about FORTRAN routines "foo_"
870 though... is it saying we need to do the "minsym" check before
871 the static check in this case?
874 if (namespace == VAR_NAMESPACE
)
876 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
879 /* OK, we found a minimal symbol in spite of not
880 * finding any symbol. There are various possible
881 * explanations for this. One possibility is the symbol
882 * exists in code not compiled -g. Another possibility
883 * is that the 'psymtab' isn't doing its job.
884 * A third possibility, related to #2, is that we were confused
885 * by name-mangling. For instance, maybe the psymtab isn't
886 * doing its job because it only know about demangled
887 * names, but we were given a mangled name...
890 /* We first use the address in the msymbol to try to
891 * locate the appropriate symtab. Note that find_pc_symtab()
892 * has a side-effect of doing psymtab-to-symtab expansion,
893 * for the found symtab.
895 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
898 bv
= BLOCKVECTOR (s
);
899 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
900 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
902 /* We kept static functions in minimal symbol table as well as
903 in static scope. We want to find them in the symbol table. */
906 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
907 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
910 /* If we found one, return it */
918 /* If we get here with sym == 0, the symbol was
919 found in the minimal symbol table
920 but not in the symtab.
921 Fall through and return 0 to use the msymbol
922 definition of "foo_".
923 (Note that outer code generally follows up a call
924 to this routine with a call to lookup_minimal_symbol(),
925 so a 0 return means we'll just flow into that other routine).
927 This happens for Fortran "foo_" symbols,
928 which are "foo" in the symtab.
930 This can also happen if "asm" is used to make a
931 regular symbol but not a debugging symbol, e.g.
937 /* If the lookup-by-address fails, try repeating the
938 * entire lookup process with the symbol name from
939 * the msymbol (if different from the original symbol name).
941 else if (MSYMBOL_TYPE (msymbol
) != mst_text
942 && MSYMBOL_TYPE (msymbol
) != mst_file_text
943 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
945 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
946 namespace, is_a_field_of_this
, symtab
);
958 /* Look, in partial_symtab PST, for symbol NAME. Check the global
959 symbols if GLOBAL, the static symbols if not */
961 static struct partial_symbol
*
962 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
963 namespace_enum
namespace)
965 struct partial_symbol
*temp
;
966 struct partial_symbol
**start
, **psym
;
967 struct partial_symbol
**top
, **bottom
, **center
;
968 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
969 int do_linear_search
= 1;
976 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
977 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
979 if (global
) /* This means we can use a binary search. */
981 do_linear_search
= 0;
983 /* Binary search. This search is guaranteed to end with center
984 pointing at the earliest partial symbol with the correct
985 name. At that point *all* partial symbols with that name
986 will be checked against the correct namespace. */
989 top
= start
+ length
- 1;
992 center
= bottom
+ (top
- bottom
) / 2;
994 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
995 if (!do_linear_search
996 && (SYMBOL_LANGUAGE (*center
) == language_java
))
998 do_linear_search
= 1;
1000 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1006 bottom
= center
+ 1;
1009 if (!(top
== bottom
))
1010 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1012 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1013 we don't have to force a linear search on C++. Probably holds true
1014 for JAVA as well, no way to check.*/
1015 while (SYMBOL_MATCHES_NAME (*top
,name
))
1017 if (SYMBOL_NAMESPACE (*top
) == namespace)
1025 /* Can't use a binary search or else we found during the binary search that
1026 we should also do a linear search. */
1028 if (do_linear_search
)
1030 for (psym
= start
; psym
< start
+ length
; psym
++)
1032 if (namespace == SYMBOL_NAMESPACE (*psym
))
1034 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1045 /* Look up a type named NAME in the struct_namespace. The type returned
1046 must not be opaque -- i.e., must have at least one field defined
1048 This code was modelled on lookup_symbol -- the parts not relevant to looking
1049 up types were just left out. In particular it's assumed here that types
1050 are available in struct_namespace and only at file-static or global blocks. */
1054 lookup_transparent_type (const char *name
)
1056 register struct symbol
*sym
;
1057 register struct symtab
*s
= NULL
;
1058 register struct partial_symtab
*ps
;
1059 struct blockvector
*bv
;
1060 register struct objfile
*objfile
;
1061 register struct block
*block
;
1063 /* Now search all the global symbols. Do the symtab's first, then
1064 check the psymtab's. If a psymtab indicates the existence
1065 of the desired name as a global, then do psymtab-to-symtab
1066 conversion on the fly and return the found symbol. */
1068 ALL_SYMTABS (objfile
, s
)
1070 bv
= BLOCKVECTOR (s
);
1071 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1072 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1073 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1075 return SYMBOL_TYPE (sym
);
1079 ALL_PSYMTABS (objfile
, ps
)
1081 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1083 s
= PSYMTAB_TO_SYMTAB (ps
);
1084 bv
= BLOCKVECTOR (s
);
1085 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1086 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1089 /* This shouldn't be necessary, but as a last resort
1090 * try looking in the statics even though the psymtab
1091 * claimed the symbol was global. It's possible that
1092 * the psymtab gets it wrong in some cases.
1094 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1095 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1097 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1098 %s may be an inlined function, or may be a template function\n\
1099 (if a template, try specifying an instantiation: %s<type>).",
1100 name
, ps
->filename
, name
, name
);
1102 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1103 return SYMBOL_TYPE (sym
);
1107 /* Now search the static file-level symbols.
1108 Not strictly correct, but more useful than an error.
1109 Do the symtab's first, then
1110 check the psymtab's. If a psymtab indicates the existence
1111 of the desired name as a file-level static, then do psymtab-to-symtab
1112 conversion on the fly and return the found symbol.
1115 ALL_SYMTABS (objfile
, s
)
1117 bv
= BLOCKVECTOR (s
);
1118 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1119 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1120 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1122 return SYMBOL_TYPE (sym
);
1126 ALL_PSYMTABS (objfile
, ps
)
1128 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1130 s
= PSYMTAB_TO_SYMTAB (ps
);
1131 bv
= BLOCKVECTOR (s
);
1132 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1133 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1136 /* This shouldn't be necessary, but as a last resort
1137 * try looking in the globals even though the psymtab
1138 * claimed the symbol was static. It's possible that
1139 * the psymtab gets it wrong in some cases.
1141 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1142 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1144 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1145 %s may be an inlined function, or may be a template function\n\
1146 (if a template, try specifying an instantiation: %s<type>).",
1147 name
, ps
->filename
, name
, name
);
1149 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1150 return SYMBOL_TYPE (sym
);
1153 return (struct type
*) 0;
1157 /* Find the psymtab containing main(). */
1158 /* FIXME: What about languages without main() or specially linked
1159 executables that have no main() ? */
1161 struct partial_symtab
*
1162 find_main_psymtab (void)
1164 register struct partial_symtab
*pst
;
1165 register struct objfile
*objfile
;
1167 ALL_PSYMTABS (objfile
, pst
)
1169 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1177 /* Search BLOCK for symbol NAME in NAMESPACE.
1179 Note that if NAME is the demangled form of a C++ symbol, we will fail
1180 to find a match during the binary search of the non-encoded names, but
1181 for now we don't worry about the slight inefficiency of looking for
1182 a match we'll never find, since it will go pretty quick. Once the
1183 binary search terminates, we drop through and do a straight linear
1184 search on the symbols. Each symbol which is marked as being a C++
1185 symbol (language_cplus set) has both the encoded and non-encoded names
1186 tested for a match. */
1189 lookup_block_symbol (register const struct block
*block
, const char *name
,
1190 const namespace_enum
namespace)
1192 register int bot
, top
, inc
;
1193 register struct symbol
*sym
;
1194 register struct symbol
*sym_found
= NULL
;
1195 register int do_linear_search
= 1;
1197 /* If the blocks's symbols were sorted, start with a binary search. */
1199 if (BLOCK_SHOULD_SORT (block
))
1201 /* Reset the linear search flag so if the binary search fails, we
1202 won't do the linear search once unless we find some reason to
1205 do_linear_search
= 0;
1206 top
= BLOCK_NSYMS (block
);
1209 /* Advance BOT to not far before the first symbol whose name is NAME. */
1213 inc
= (top
- bot
+ 1);
1214 /* No need to keep binary searching for the last few bits worth. */
1219 inc
= (inc
>> 1) + bot
;
1220 sym
= BLOCK_SYM (block
, inc
);
1221 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1223 do_linear_search
= 1;
1225 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1229 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1233 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1243 /* Now scan forward until we run out of symbols, find one whose
1244 name is greater than NAME, or find one we want. If there is
1245 more than one symbol with the right name and namespace, we
1246 return the first one; I believe it is now impossible for us
1247 to encounter two symbols with the same name and namespace
1248 here, because blocks containing argument symbols are no
1251 top
= BLOCK_NSYMS (block
);
1254 sym
= BLOCK_SYM (block
, bot
);
1255 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1256 SYMBOL_MATCHES_NAME (sym
, name
))
1260 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1268 /* Here if block isn't sorted, or we fail to find a match during the
1269 binary search above. If during the binary search above, we find a
1270 symbol which is a Java symbol, then we have re-enabled the linear
1271 search flag which was reset when starting the binary search.
1273 This loop is equivalent to the loop above, but hacked greatly for speed.
1275 Note that parameter symbols do not always show up last in the
1276 list; this loop makes sure to take anything else other than
1277 parameter symbols first; it only uses parameter symbols as a
1278 last resort. Note that this only takes up extra computation
1281 if (do_linear_search
)
1283 top
= BLOCK_NSYMS (block
);
1287 sym
= BLOCK_SYM (block
, bot
);
1288 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1289 SYMBOL_MATCHES_NAME (sym
, name
))
1291 /* If SYM has aliases, then use any alias that is active
1292 at the current PC. If no alias is active at the current
1293 PC, then use the main symbol.
1295 ?!? Is checking the current pc correct? Is this routine
1296 ever called to look up a symbol from another context?
1298 FIXME: No, it's not correct. If someone sets a
1299 conditional breakpoint at an address, then the
1300 breakpoint's `struct expression' should refer to the
1301 `struct symbol' appropriate for the breakpoint's
1302 address, which may not be the PC.
1304 Even if it were never called from another context,
1305 it's totally bizarre for lookup_symbol's behavior to
1306 depend on the value of the inferior's current PC. We
1307 should pass in the appropriate PC as well as the
1308 block. The interface to lookup_symbol should change
1309 to require the caller to provide a PC. */
1311 if (SYMBOL_ALIASES (sym
))
1312 sym
= find_active_alias (sym
, read_pc ());
1315 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1316 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1317 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1318 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1319 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1320 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1328 return (sym_found
); /* Will be NULL if not found. */
1331 /* Given a main symbol SYM and ADDR, search through the alias
1332 list to determine if an alias is active at ADDR and return
1335 If no alias is active, then return SYM. */
1337 static struct symbol
*
1338 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1340 struct range_list
*r
;
1341 struct alias_list
*aliases
;
1343 /* If we have aliases, check them first. */
1344 aliases
= SYMBOL_ALIASES (sym
);
1348 if (!SYMBOL_RANGES (aliases
->sym
))
1349 return aliases
->sym
;
1350 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1352 if (r
->start
<= addr
&& r
->end
> addr
)
1353 return aliases
->sym
;
1355 aliases
= aliases
->next
;
1358 /* Nothing found, return the main symbol. */
1363 /* Return the symbol for the function which contains a specified
1364 lexical block, described by a struct block BL. */
1367 block_function (struct block
*bl
)
1369 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1370 bl
= BLOCK_SUPERBLOCK (bl
);
1372 return BLOCK_FUNCTION (bl
);
1375 /* Find the symtab associated with PC and SECTION. Look through the
1376 psymtabs and read in another symtab if necessary. */
1379 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1381 register struct block
*b
;
1382 struct blockvector
*bv
;
1383 register struct symtab
*s
= NULL
;
1384 register struct symtab
*best_s
= NULL
;
1385 register struct partial_symtab
*ps
;
1386 register struct objfile
*objfile
;
1387 CORE_ADDR distance
= 0;
1389 /* Search all symtabs for the one whose file contains our address, and which
1390 is the smallest of all the ones containing the address. This is designed
1391 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1392 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1393 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1395 This happens for native ecoff format, where code from included files
1396 gets its own symtab. The symtab for the included file should have
1397 been read in already via the dependency mechanism.
1398 It might be swifter to create several symtabs with the same name
1399 like xcoff does (I'm not sure).
1401 It also happens for objfiles that have their functions reordered.
1402 For these, the symtab we are looking for is not necessarily read in. */
1404 ALL_SYMTABS (objfile
, s
)
1406 bv
= BLOCKVECTOR (s
);
1407 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1409 if (BLOCK_START (b
) <= pc
1410 && BLOCK_END (b
) > pc
1412 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1414 /* For an objfile that has its functions reordered,
1415 find_pc_psymtab will find the proper partial symbol table
1416 and we simply return its corresponding symtab. */
1417 /* In order to better support objfiles that contain both
1418 stabs and coff debugging info, we continue on if a psymtab
1420 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1422 ps
= find_pc_sect_psymtab (pc
, section
);
1424 return PSYMTAB_TO_SYMTAB (ps
);
1430 for (i
= 0; i
< b
->nsyms
; i
++)
1432 fixup_symbol_section (b
->sym
[i
], objfile
);
1433 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1437 continue; /* no symbol in this symtab matches section */
1439 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1448 ps
= find_pc_sect_psymtab (pc
, section
);
1452 /* Might want to error() here (in case symtab is corrupt and
1453 will cause a core dump), but maybe we can successfully
1454 continue, so let's not. */
1456 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1458 s
= PSYMTAB_TO_SYMTAB (ps
);
1463 /* Find the symtab associated with PC. Look through the psymtabs and
1464 read in another symtab if necessary. Backward compatibility, no section */
1467 find_pc_symtab (CORE_ADDR pc
)
1469 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1475 /* Find the closest symbol value (of any sort -- function or variable)
1476 for a given address value. Slow but complete. (currently unused,
1477 mainly because it is too slow. We could fix it if each symtab and
1478 psymtab had contained in it the addresses ranges of each of its
1479 sections, which also would be required to make things like "info
1480 line *0x2345" cause psymtabs to be converted to symtabs). */
1483 find_addr_symbol (CORE_ADDR addr
, struct symtab
**symtabp
, CORE_ADDR
*symaddrp
)
1485 struct symtab
*symtab
, *best_symtab
;
1486 struct objfile
*objfile
;
1487 register int bot
, top
;
1488 register struct symbol
*sym
;
1489 register CORE_ADDR sym_addr
;
1490 struct block
*block
;
1493 /* Info on best symbol seen so far */
1495 register CORE_ADDR best_sym_addr
= 0;
1496 struct symbol
*best_sym
= 0;
1498 /* FIXME -- we should pull in all the psymtabs, too! */
1499 ALL_SYMTABS (objfile
, symtab
)
1501 /* Search the global and static blocks in this symtab for
1502 the closest symbol-address to the desired address. */
1504 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1507 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1508 top
= BLOCK_NSYMS (block
);
1509 for (bot
= 0; bot
< top
; bot
++)
1511 sym
= BLOCK_SYM (block
, bot
);
1512 switch (SYMBOL_CLASS (sym
))
1516 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1520 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1521 /* An indirect symbol really lives at *sym_addr,
1522 * so an indirection needs to be done.
1523 * However, I am leaving this commented out because it's
1524 * expensive, and it's possible that symbolization
1525 * could be done without an active process (in
1526 * case this read_memory will fail). RT
1527 sym_addr = read_memory_unsigned_integer
1528 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1533 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1540 if (sym_addr
<= addr
)
1541 if (sym_addr
> best_sym_addr
)
1543 /* Quit if we found an exact match. */
1545 best_sym_addr
= sym_addr
;
1546 best_symtab
= symtab
;
1547 if (sym_addr
== addr
)
1556 *symtabp
= best_symtab
;
1558 *symaddrp
= best_sym_addr
;
1563 /* Find the source file and line number for a given PC value and SECTION.
1564 Return a structure containing a symtab pointer, a line number,
1565 and a pc range for the entire source line.
1566 The value's .pc field is NOT the specified pc.
1567 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1568 use the line that ends there. Otherwise, in that case, the line
1569 that begins there is used. */
1571 /* The big complication here is that a line may start in one file, and end just
1572 before the start of another file. This usually occurs when you #include
1573 code in the middle of a subroutine. To properly find the end of a line's PC
1574 range, we must search all symtabs associated with this compilation unit, and
1575 find the one whose first PC is closer than that of the next line in this
1578 /* If it's worth the effort, we could be using a binary search. */
1580 struct symtab_and_line
1581 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1584 register struct linetable
*l
;
1587 register struct linetable_entry
*item
;
1588 struct symtab_and_line val
;
1589 struct blockvector
*bv
;
1590 struct minimal_symbol
*msymbol
;
1591 struct minimal_symbol
*mfunsym
;
1593 /* Info on best line seen so far, and where it starts, and its file. */
1595 struct linetable_entry
*best
= NULL
;
1596 CORE_ADDR best_end
= 0;
1597 struct symtab
*best_symtab
= 0;
1599 /* Store here the first line number
1600 of a file which contains the line at the smallest pc after PC.
1601 If we don't find a line whose range contains PC,
1602 we will use a line one less than this,
1603 with a range from the start of that file to the first line's pc. */
1604 struct linetable_entry
*alt
= NULL
;
1605 struct symtab
*alt_symtab
= 0;
1607 /* Info on best line seen in this file. */
1609 struct linetable_entry
*prev
;
1611 /* If this pc is not from the current frame,
1612 it is the address of the end of a call instruction.
1613 Quite likely that is the start of the following statement.
1614 But what we want is the statement containing the instruction.
1615 Fudge the pc to make sure we get that. */
1617 INIT_SAL (&val
); /* initialize to zeroes */
1619 /* It's tempting to assume that, if we can't find debugging info for
1620 any function enclosing PC, that we shouldn't search for line
1621 number info, either. However, GAS can emit line number info for
1622 assembly files --- very helpful when debugging hand-written
1623 assembly code. In such a case, we'd have no debug info for the
1624 function, but we would have line info. */
1629 /* elz: added this because this function returned the wrong
1630 information if the pc belongs to a stub (import/export)
1631 to call a shlib function. This stub would be anywhere between
1632 two functions in the target, and the line info was erroneously
1633 taken to be the one of the line before the pc.
1635 /* RT: Further explanation:
1637 * We have stubs (trampolines) inserted between procedures.
1639 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1640 * exists in the main image.
1642 * In the minimal symbol table, we have a bunch of symbols
1643 * sorted by start address. The stubs are marked as "trampoline",
1644 * the others appear as text. E.g.:
1646 * Minimal symbol table for main image
1647 * main: code for main (text symbol)
1648 * shr1: stub (trampoline symbol)
1649 * foo: code for foo (text symbol)
1651 * Minimal symbol table for "shr1" image:
1653 * shr1: code for shr1 (text symbol)
1656 * So the code below is trying to detect if we are in the stub
1657 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1658 * and if found, do the symbolization from the real-code address
1659 * rather than the stub address.
1661 * Assumptions being made about the minimal symbol table:
1662 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1663 * if we're really in the trampoline. If we're beyond it (say
1664 * we're in "foo" in the above example), it'll have a closer
1665 * symbol (the "foo" text symbol for example) and will not
1666 * return the trampoline.
1667 * 2. lookup_minimal_symbol_text() will find a real text symbol
1668 * corresponding to the trampoline, and whose address will
1669 * be different than the trampoline address. I put in a sanity
1670 * check for the address being the same, to avoid an
1671 * infinite recursion.
1673 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1674 if (msymbol
!= NULL
)
1675 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1677 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1678 if (mfunsym
== NULL
)
1679 /* I eliminated this warning since it is coming out
1680 * in the following situation:
1681 * gdb shmain // test program with shared libraries
1682 * (gdb) break shr1 // function in shared lib
1683 * Warning: In stub for ...
1684 * In the above situation, the shared lib is not loaded yet,
1685 * so of course we can't find the real func/line info,
1686 * but the "break" still works, and the warning is annoying.
1687 * So I commented out the warning. RT */
1688 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1690 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1691 /* Avoid infinite recursion */
1692 /* See above comment about why warning is commented out */
1693 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1696 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1700 s
= find_pc_sect_symtab (pc
, section
);
1703 /* if no symbol information, return previous pc */
1710 bv
= BLOCKVECTOR (s
);
1712 /* Look at all the symtabs that share this blockvector.
1713 They all have the same apriori range, that we found was right;
1714 but they have different line tables. */
1716 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1718 /* Find the best line in this symtab. */
1725 /* I think len can be zero if the symtab lacks line numbers
1726 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1727 I'm not sure which, and maybe it depends on the symbol
1733 item
= l
->item
; /* Get first line info */
1735 /* Is this file's first line closer than the first lines of other files?
1736 If so, record this file, and its first line, as best alternate. */
1737 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1743 for (i
= 0; i
< len
; i
++, item
++)
1745 /* Leave prev pointing to the linetable entry for the last line
1746 that started at or before PC. */
1753 /* At this point, prev points at the line whose start addr is <= pc, and
1754 item points at the next line. If we ran off the end of the linetable
1755 (pc >= start of the last line), then prev == item. If pc < start of
1756 the first line, prev will not be set. */
1758 /* Is this file's best line closer than the best in the other files?
1759 If so, record this file, and its best line, as best so far. */
1761 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1766 /* Discard BEST_END if it's before the PC of the current BEST. */
1767 if (best_end
<= best
->pc
)
1771 /* If another line (denoted by ITEM) is in the linetable and its
1772 PC is after BEST's PC, but before the current BEST_END, then
1773 use ITEM's PC as the new best_end. */
1774 if (best
&& i
< len
&& item
->pc
> best
->pc
1775 && (best_end
== 0 || best_end
> item
->pc
))
1776 best_end
= item
->pc
;
1782 { /* If we didn't find any line # info, just
1788 val
.symtab
= alt_symtab
;
1789 val
.line
= alt
->line
- 1;
1791 /* Don't return line 0, that means that we didn't find the line. */
1795 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1801 val
.symtab
= best_symtab
;
1802 val
.line
= best
->line
;
1804 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1809 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1811 val
.section
= section
;
1815 /* Backward compatibility (no section) */
1817 struct symtab_and_line
1818 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1822 section
= find_pc_overlay (pc
);
1823 if (pc_in_unmapped_range (pc
, section
))
1824 pc
= overlay_mapped_address (pc
, section
);
1825 return find_pc_sect_line (pc
, section
, notcurrent
);
1828 /* Find line number LINE in any symtab whose name is the same as
1831 If found, return the symtab that contains the linetable in which it was
1832 found, set *INDEX to the index in the linetable of the best entry
1833 found, and set *EXACT_MATCH nonzero if the value returned is an
1836 If not found, return NULL. */
1839 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1843 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1847 struct linetable
*best_linetable
;
1848 struct symtab
*best_symtab
;
1850 /* First try looking it up in the given symtab. */
1851 best_linetable
= LINETABLE (symtab
);
1852 best_symtab
= symtab
;
1853 best_index
= find_line_common (best_linetable
, line
, &exact
);
1854 if (best_index
< 0 || !exact
)
1856 /* Didn't find an exact match. So we better keep looking for
1857 another symtab with the same name. In the case of xcoff,
1858 multiple csects for one source file (produced by IBM's FORTRAN
1859 compiler) produce multiple symtabs (this is unavoidable
1860 assuming csects can be at arbitrary places in memory and that
1861 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1863 /* BEST is the smallest linenumber > LINE so far seen,
1864 or 0 if none has been seen so far.
1865 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1868 struct objfile
*objfile
;
1871 if (best_index
>= 0)
1872 best
= best_linetable
->item
[best_index
].line
;
1876 ALL_SYMTABS (objfile
, s
)
1878 struct linetable
*l
;
1881 if (!STREQ (symtab
->filename
, s
->filename
))
1884 ind
= find_line_common (l
, line
, &exact
);
1894 if (best
== 0 || l
->item
[ind
].line
< best
)
1896 best
= l
->item
[ind
].line
;
1909 *index
= best_index
;
1911 *exact_match
= exact
;
1916 /* Set the PC value for a given source file and line number and return true.
1917 Returns zero for invalid line number (and sets the PC to 0).
1918 The source file is specified with a struct symtab. */
1921 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
1923 struct linetable
*l
;
1930 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1933 l
= LINETABLE (symtab
);
1934 *pc
= l
->item
[ind
].pc
;
1941 /* Find the range of pc values in a line.
1942 Store the starting pc of the line into *STARTPTR
1943 and the ending pc (start of next line) into *ENDPTR.
1944 Returns 1 to indicate success.
1945 Returns 0 if could not find the specified line. */
1948 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
1951 CORE_ADDR startaddr
;
1952 struct symtab_and_line found_sal
;
1955 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1958 /* This whole function is based on address. For example, if line 10 has
1959 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1960 "info line *0x123" should say the line goes from 0x100 to 0x200
1961 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1962 This also insures that we never give a range like "starts at 0x134
1963 and ends at 0x12c". */
1965 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1966 if (found_sal
.line
!= sal
.line
)
1968 /* The specified line (sal) has zero bytes. */
1969 *startptr
= found_sal
.pc
;
1970 *endptr
= found_sal
.pc
;
1974 *startptr
= found_sal
.pc
;
1975 *endptr
= found_sal
.end
;
1980 /* Given a line table and a line number, return the index into the line
1981 table for the pc of the nearest line whose number is >= the specified one.
1982 Return -1 if none is found. The value is >= 0 if it is an index.
1984 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
1987 find_line_common (register struct linetable
*l
, register int lineno
,
1993 /* BEST is the smallest linenumber > LINENO so far seen,
1994 or 0 if none has been seen so far.
1995 BEST_INDEX identifies the item for it. */
1997 int best_index
= -1;
2006 for (i
= 0; i
< len
; i
++)
2008 register struct linetable_entry
*item
= &(l
->item
[i
]);
2010 if (item
->line
== lineno
)
2012 /* Return the first (lowest address) entry which matches. */
2017 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2024 /* If we got here, we didn't get an exact match. */
2031 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2033 struct symtab_and_line sal
;
2034 sal
= find_pc_line (pc
, 0);
2037 return sal
.symtab
!= 0;
2040 /* Given a function symbol SYM, find the symtab and line for the start
2042 If the argument FUNFIRSTLINE is nonzero, we want the first line
2043 of real code inside the function. */
2045 struct symtab_and_line
2046 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2049 struct symtab_and_line sal
;
2051 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2052 fixup_symbol_section (sym
, NULL
);
2054 { /* skip "first line" of function (which is actually its prologue) */
2055 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2056 /* If function is in an unmapped overlay, use its unmapped LMA
2057 address, so that SKIP_PROLOGUE has something unique to work on */
2058 if (section_is_overlay (section
) &&
2059 !section_is_mapped (section
))
2060 pc
= overlay_unmapped_address (pc
, section
);
2062 pc
+= FUNCTION_START_OFFSET
;
2063 pc
= SKIP_PROLOGUE (pc
);
2065 /* For overlays, map pc back into its mapped VMA range */
2066 pc
= overlay_mapped_address (pc
, section
);
2068 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2070 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2071 /* Convex: no need to suppress code on first line, if any */
2074 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2075 line is still part of the same function. */
2077 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2078 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2080 /* First pc of next line */
2082 /* Recalculate the line number (might not be N+1). */
2083 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2091 /* If P is of the form "operator[ \t]+..." where `...' is
2092 some legitimate operator text, return a pointer to the
2093 beginning of the substring of the operator text.
2094 Otherwise, return "". */
2096 operator_chars (char *p
, char **end
)
2099 if (strncmp (p
, "operator", 8))
2103 /* Don't get faked out by `operator' being part of a longer
2105 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2108 /* Allow some whitespace between `operator' and the operator symbol. */
2109 while (*p
== ' ' || *p
== '\t')
2112 /* Recognize 'operator TYPENAME'. */
2114 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2116 register char *q
= p
+ 1;
2117 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2126 case '\\': /* regexp quoting */
2129 if (p
[2] == '=') /* 'operator\*=' */
2131 else /* 'operator\*' */
2135 else if (p
[1] == '[')
2138 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2139 else if (p
[2] == '\\' && p
[3] == ']')
2141 *end
= p
+ 4; /* 'operator\[\]' */
2145 error ("nothing is allowed between '[' and ']'");
2149 /* Gratuitous qoute: skip it and move on. */
2171 if (p
[0] == '-' && p
[1] == '>')
2173 /* Struct pointer member operator 'operator->'. */
2176 *end
= p
+ 3; /* 'operator->*' */
2179 else if (p
[2] == '\\')
2181 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2186 *end
= p
+ 2; /* 'operator->' */
2190 if (p
[1] == '=' || p
[1] == p
[0])
2201 error ("`operator ()' must be specified without whitespace in `()'");
2206 error ("`operator ?:' must be specified without whitespace in `?:'");
2211 error ("`operator []' must be specified without whitespace in `[]'");
2215 error ("`operator %s' not supported", p
);
2224 /* If FILE is not already in the table of files, return zero;
2225 otherwise return non-zero. Optionally add FILE to the table if ADD
2226 is non-zero. If *FIRST is non-zero, forget the old table
2229 filename_seen (const char *file
, int add
, int *first
)
2231 /* Table of files seen so far. */
2232 static const char **tab
= NULL
;
2233 /* Allocated size of tab in elements.
2234 Start with one 256-byte block (when using GNU malloc.c).
2235 24 is the malloc overhead when range checking is in effect. */
2236 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2237 /* Current size of tab in elements. */
2238 static int tab_cur_size
;
2244 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2248 /* Is FILE in tab? */
2249 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2250 if (strcmp (*p
, file
) == 0)
2253 /* No; maybe add it to tab. */
2256 if (tab_cur_size
== tab_alloc_size
)
2258 tab_alloc_size
*= 2;
2259 tab
= (const char **) xrealloc ((char *) tab
,
2260 tab_alloc_size
* sizeof (*tab
));
2262 tab
[tab_cur_size
++] = file
;
2268 /* Slave routine for sources_info. Force line breaks at ,'s.
2269 NAME is the name to print and *FIRST is nonzero if this is the first
2270 name printed. Set *FIRST to zero. */
2272 output_source_filename (char *name
, int *first
)
2274 /* Since a single source file can result in several partial symbol
2275 tables, we need to avoid printing it more than once. Note: if
2276 some of the psymtabs are read in and some are not, it gets
2277 printed both under "Source files for which symbols have been
2278 read" and "Source files for which symbols will be read in on
2279 demand". I consider this a reasonable way to deal with the
2280 situation. I'm not sure whether this can also happen for
2281 symtabs; it doesn't hurt to check. */
2283 /* Was NAME already seen? */
2284 if (filename_seen (name
, 1, first
))
2286 /* Yes; don't print it again. */
2289 /* No; print it and reset *FIRST. */
2296 printf_filtered (", ");
2300 fputs_filtered (name
, gdb_stdout
);
2304 sources_info (char *ignore
, int from_tty
)
2306 register struct symtab
*s
;
2307 register struct partial_symtab
*ps
;
2308 register struct objfile
*objfile
;
2311 if (!have_full_symbols () && !have_partial_symbols ())
2313 error ("No symbol table is loaded. Use the \"file\" command.");
2316 printf_filtered ("Source files for which symbols have been read in:\n\n");
2319 ALL_SYMTABS (objfile
, s
)
2321 output_source_filename (s
->filename
, &first
);
2323 printf_filtered ("\n\n");
2325 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2328 ALL_PSYMTABS (objfile
, ps
)
2332 output_source_filename (ps
->filename
, &first
);
2335 printf_filtered ("\n");
2339 file_matches (char *file
, char *files
[], int nfiles
)
2343 if (file
!= NULL
&& nfiles
!= 0)
2345 for (i
= 0; i
< nfiles
; i
++)
2347 if (strcmp (files
[i
], lbasename (file
)) == 0)
2351 else if (nfiles
== 0)
2356 /* Free any memory associated with a search. */
2358 free_search_symbols (struct symbol_search
*symbols
)
2360 struct symbol_search
*p
;
2361 struct symbol_search
*next
;
2363 for (p
= symbols
; p
!= NULL
; p
= next
)
2371 do_free_search_symbols_cleanup (void *symbols
)
2373 free_search_symbols (symbols
);
2377 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2379 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2383 /* Search the symbol table for matches to the regular expression REGEXP,
2384 returning the results in *MATCHES.
2386 Only symbols of KIND are searched:
2387 FUNCTIONS_NAMESPACE - search all functions
2388 TYPES_NAMESPACE - search all type names
2389 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2390 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2391 and constants (enums)
2393 free_search_symbols should be called when *MATCHES is no longer needed.
2396 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2397 struct symbol_search
**matches
)
2399 register struct symtab
*s
;
2400 register struct partial_symtab
*ps
;
2401 register struct blockvector
*bv
;
2402 struct blockvector
*prev_bv
= 0;
2403 register struct block
*b
;
2406 register struct symbol
*sym
;
2407 struct partial_symbol
**psym
;
2408 struct objfile
*objfile
;
2409 struct minimal_symbol
*msymbol
;
2412 static enum minimal_symbol_type types
[]
2414 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2415 static enum minimal_symbol_type types2
[]
2417 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2418 static enum minimal_symbol_type types3
[]
2420 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2421 static enum minimal_symbol_type types4
[]
2423 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2424 enum minimal_symbol_type ourtype
;
2425 enum minimal_symbol_type ourtype2
;
2426 enum minimal_symbol_type ourtype3
;
2427 enum minimal_symbol_type ourtype4
;
2428 struct symbol_search
*sr
;
2429 struct symbol_search
*psr
;
2430 struct symbol_search
*tail
;
2431 struct cleanup
*old_chain
= NULL
;
2433 if (kind
< VARIABLES_NAMESPACE
)
2434 error ("must search on specific namespace");
2436 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2437 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2438 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2439 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2441 sr
= *matches
= NULL
;
2446 /* Make sure spacing is right for C++ operators.
2447 This is just a courtesy to make the matching less sensitive
2448 to how many spaces the user leaves between 'operator'
2449 and <TYPENAME> or <OPERATOR>. */
2451 char *opname
= operator_chars (regexp
, &opend
);
2454 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2455 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2457 /* There should 1 space between 'operator' and 'TYPENAME'. */
2458 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2463 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2464 if (opname
[-1] == ' ')
2467 /* If wrong number of spaces, fix it. */
2470 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2471 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2476 if (0 != (val
= re_comp (regexp
)))
2477 error ("Invalid regexp (%s): %s", val
, regexp
);
2480 /* Search through the partial symtabs *first* for all symbols
2481 matching the regexp. That way we don't have to reproduce all of
2482 the machinery below. */
2484 ALL_PSYMTABS (objfile
, ps
)
2486 struct partial_symbol
**bound
, **gbound
, **sbound
;
2492 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2493 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2496 /* Go through all of the symbols stored in a partial
2497 symtab in one loop. */
2498 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2503 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2505 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2516 /* If it would match (logic taken from loop below)
2517 load the file and go on to the next one */
2518 if (file_matches (ps
->filename
, files
, nfiles
)
2519 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2520 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2521 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2522 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2523 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2524 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2526 PSYMTAB_TO_SYMTAB (ps
);
2534 /* Here, we search through the minimal symbol tables for functions
2535 and variables that match, and force their symbols to be read.
2536 This is in particular necessary for demangled variable names,
2537 which are no longer put into the partial symbol tables.
2538 The symbol will then be found during the scan of symtabs below.
2540 For functions, find_pc_symtab should succeed if we have debug info
2541 for the function, for variables we have to call lookup_symbol
2542 to determine if the variable has debug info.
2543 If the lookup fails, set found_misc so that we will rescan to print
2544 any matching symbols without debug info.
2547 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2549 ALL_MSYMBOLS (objfile
, msymbol
)
2551 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2552 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2553 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2554 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2556 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2558 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2560 if (kind
== FUNCTIONS_NAMESPACE
2561 || lookup_symbol (SYMBOL_NAME (msymbol
),
2562 (struct block
*) NULL
,
2564 0, (struct symtab
**) NULL
) == NULL
)
2572 ALL_SYMTABS (objfile
, s
)
2574 bv
= BLOCKVECTOR (s
);
2575 /* Often many files share a blockvector.
2576 Scan each blockvector only once so that
2577 we don't get every symbol many times.
2578 It happens that the first symtab in the list
2579 for any given blockvector is the main file. */
2581 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2583 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2584 /* Skip the sort if this block is always sorted. */
2585 if (!BLOCK_SHOULD_SORT (b
))
2586 sort_block_syms (b
);
2587 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
2590 sym
= BLOCK_SYM (b
, j
);
2591 if (file_matches (s
->filename
, files
, nfiles
)
2592 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2593 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2594 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2595 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2596 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2597 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2598 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2601 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2605 psr
->msymbol
= NULL
;
2610 old_chain
= make_cleanup_free_search_symbols (sr
);
2621 /* If there are no eyes, avoid all contact. I mean, if there are
2622 no debug symbols, then print directly from the msymbol_vector. */
2624 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2626 ALL_MSYMBOLS (objfile
, msymbol
)
2628 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2629 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2630 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2631 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2633 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2635 /* Functions: Look up by address. */
2636 if (kind
!= FUNCTIONS_NAMESPACE
||
2637 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2639 /* Variables/Absolutes: Look up by name */
2640 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2641 (struct block
*) NULL
, VAR_NAMESPACE
,
2642 0, (struct symtab
**) NULL
) == NULL
)
2645 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2647 psr
->msymbol
= msymbol
;
2654 old_chain
= make_cleanup_free_search_symbols (sr
);
2668 discard_cleanups (old_chain
);
2671 /* Helper function for symtab_symbol_info, this function uses
2672 the data returned from search_symbols() to print information
2673 regarding the match to gdb_stdout.
2676 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
2677 int block
, char *last
)
2679 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
2681 fputs_filtered ("\nFile ", gdb_stdout
);
2682 fputs_filtered (s
->filename
, gdb_stdout
);
2683 fputs_filtered (":\n", gdb_stdout
);
2686 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
2687 printf_filtered ("static ");
2689 /* Typedef that is not a C++ class */
2690 if (kind
== TYPES_NAMESPACE
2691 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
2692 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
2693 /* variable, func, or typedef-that-is-c++-class */
2694 else if (kind
< TYPES_NAMESPACE
||
2695 (kind
== TYPES_NAMESPACE
&&
2696 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
2698 type_print (SYMBOL_TYPE (sym
),
2699 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
2700 ? "" : SYMBOL_SOURCE_NAME (sym
)),
2703 printf_filtered (";\n");
2708 /* Tiemann says: "info methods was never implemented." */
2709 char *demangled_name
;
2710 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
2712 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
2714 if (TYPE_FN_FIELD_STUB (t
, block
))
2715 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
2717 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
2718 DMGL_ANSI
| DMGL_PARAMS
);
2719 if (demangled_name
== NULL
)
2720 fprintf_filtered (stream
, "<badly mangled name %s>",
2721 TYPE_FN_FIELD_PHYSNAME (t
, block
));
2724 fputs_filtered (demangled_name
, stream
);
2725 xfree (demangled_name
);
2731 /* This help function for symtab_symbol_info() prints information
2732 for non-debugging symbols to gdb_stdout.
2735 print_msymbol_info (struct minimal_symbol
*msymbol
)
2739 if (TARGET_ADDR_BIT
<= 32)
2740 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
2741 & (CORE_ADDR
) 0xffffffff,
2744 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
2746 printf_filtered ("%s %s\n",
2747 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
2750 /* This is the guts of the commands "info functions", "info types", and
2751 "info variables". It calls search_symbols to find all matches and then
2752 print_[m]symbol_info to print out some useful information about the
2756 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
2758 static char *classnames
[]
2760 {"variable", "function", "type", "method"};
2761 struct symbol_search
*symbols
;
2762 struct symbol_search
*p
;
2763 struct cleanup
*old_chain
;
2764 char *last_filename
= NULL
;
2767 /* must make sure that if we're interrupted, symbols gets freed */
2768 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
2769 old_chain
= make_cleanup_free_search_symbols (symbols
);
2771 printf_filtered (regexp
2772 ? "All %ss matching regular expression \"%s\":\n"
2773 : "All defined %ss:\n",
2774 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
2776 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
2780 if (p
->msymbol
!= NULL
)
2784 printf_filtered ("\nNon-debugging symbols:\n");
2787 print_msymbol_info (p
->msymbol
);
2791 print_symbol_info (kind
,
2796 last_filename
= p
->symtab
->filename
;
2800 do_cleanups (old_chain
);
2804 variables_info (char *regexp
, int from_tty
)
2806 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
2810 functions_info (char *regexp
, int from_tty
)
2812 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
2817 types_info (char *regexp
, int from_tty
)
2819 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
2823 /* Tiemann says: "info methods was never implemented." */
2825 methods_info (char *regexp
)
2827 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
2831 /* Breakpoint all functions matching regular expression. */
2834 rbreak_command_wrapper (char *regexp
, int from_tty
)
2836 rbreak_command (regexp
, from_tty
);
2840 rbreak_command (char *regexp
, int from_tty
)
2842 struct symbol_search
*ss
;
2843 struct symbol_search
*p
;
2844 struct cleanup
*old_chain
;
2846 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
2847 old_chain
= make_cleanup_free_search_symbols (ss
);
2849 for (p
= ss
; p
!= NULL
; p
= p
->next
)
2851 if (p
->msymbol
== NULL
)
2853 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
2854 + strlen (SYMBOL_NAME (p
->symbol
))
2856 strcpy (string
, p
->symtab
->filename
);
2857 strcat (string
, ":'");
2858 strcat (string
, SYMBOL_NAME (p
->symbol
));
2859 strcat (string
, "'");
2860 break_command (string
, from_tty
);
2861 print_symbol_info (FUNCTIONS_NAMESPACE
,
2865 p
->symtab
->filename
);
2869 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
2870 printf_filtered ("<function, no debug info> %s;\n",
2871 SYMBOL_SOURCE_NAME (p
->msymbol
));
2875 do_cleanups (old_chain
);
2879 /* Return Nonzero if block a is lexically nested within block b,
2880 or if a and b have the same pc range.
2881 Return zero otherwise. */
2883 contained_in (struct block
*a
, struct block
*b
)
2887 return BLOCK_START (a
) >= BLOCK_START (b
)
2888 && BLOCK_END (a
) <= BLOCK_END (b
);
2892 /* Helper routine for make_symbol_completion_list. */
2894 static int return_val_size
;
2895 static int return_val_index
;
2896 static char **return_val
;
2898 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
2900 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
2901 /* Put only the mangled name on the list. */ \
2902 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
2903 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
2904 completion_list_add_name \
2905 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
2907 completion_list_add_name \
2908 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
2911 /* Test to see if the symbol specified by SYMNAME (which is already
2912 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
2913 characters. If so, add it to the current completion list. */
2916 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
2917 char *text
, char *word
)
2922 /* clip symbols that cannot match */
2924 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
2929 /* We have a match for a completion, so add SYMNAME to the current list
2930 of matches. Note that the name is moved to freshly malloc'd space. */
2934 if (word
== sym_text
)
2936 new = xmalloc (strlen (symname
) + 5);
2937 strcpy (new, symname
);
2939 else if (word
> sym_text
)
2941 /* Return some portion of symname. */
2942 new = xmalloc (strlen (symname
) + 5);
2943 strcpy (new, symname
+ (word
- sym_text
));
2947 /* Return some of SYM_TEXT plus symname. */
2948 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
2949 strncpy (new, word
, sym_text
- word
);
2950 new[sym_text
- word
] = '\0';
2951 strcat (new, symname
);
2954 if (return_val_index
+ 3 > return_val_size
)
2956 newsize
= (return_val_size
*= 2) * sizeof (char *);
2957 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
2959 return_val
[return_val_index
++] = new;
2960 return_val
[return_val_index
] = NULL
;
2964 /* Return a NULL terminated array of all symbols (regardless of class)
2965 which begin by matching TEXT. If the answer is no symbols, then
2966 the return value is an array which contains only a NULL pointer.
2968 Problem: All of the symbols have to be copied because readline frees them.
2969 I'm not going to worry about this; hopefully there won't be that many. */
2972 make_symbol_completion_list (char *text
, char *word
)
2974 register struct symbol
*sym
;
2975 register struct symtab
*s
;
2976 register struct partial_symtab
*ps
;
2977 register struct minimal_symbol
*msymbol
;
2978 register struct objfile
*objfile
;
2979 register struct block
*b
, *surrounding_static_block
= 0;
2981 struct partial_symbol
**psym
;
2982 /* The symbol we are completing on. Points in same buffer as text. */
2984 /* Length of sym_text. */
2987 /* Now look for the symbol we are supposed to complete on.
2988 FIXME: This should be language-specific. */
2992 char *quote_pos
= NULL
;
2994 /* First see if this is a quoted string. */
2996 for (p
= text
; *p
!= '\0'; ++p
)
2998 if (quote_found
!= '\0')
3000 if (*p
== quote_found
)
3001 /* Found close quote. */
3003 else if (*p
== '\\' && p
[1] == quote_found
)
3004 /* A backslash followed by the quote character
3005 doesn't end the string. */
3008 else if (*p
== '\'' || *p
== '"')
3014 if (quote_found
== '\'')
3015 /* A string within single quotes can be a symbol, so complete on it. */
3016 sym_text
= quote_pos
+ 1;
3017 else if (quote_found
== '"')
3018 /* A double-quoted string is never a symbol, nor does it make sense
3019 to complete it any other way. */
3021 return_val
= (char **) xmalloc (sizeof (char *));
3022 return_val
[0] = NULL
;
3027 /* It is not a quoted string. Break it based on the characters
3028 which are in symbols. */
3031 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3040 sym_text_len
= strlen (sym_text
);
3042 return_val_size
= 100;
3043 return_val_index
= 0;
3044 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3045 return_val
[0] = NULL
;
3047 /* Look through the partial symtabs for all symbols which begin
3048 by matching SYM_TEXT. Add each one that you find to the list. */
3050 ALL_PSYMTABS (objfile
, ps
)
3052 /* If the psymtab's been read in we'll get it when we search
3053 through the blockvector. */
3057 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3058 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3059 + ps
->n_global_syms
);
3062 /* If interrupted, then quit. */
3064 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3067 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3068 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3069 + ps
->n_static_syms
);
3073 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3077 /* At this point scan through the misc symbol vectors and add each
3078 symbol you find to the list. Eventually we want to ignore
3079 anything that isn't a text symbol (everything else will be
3080 handled by the psymtab code above). */
3082 ALL_MSYMBOLS (objfile
, msymbol
)
3085 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3088 /* Search upwards from currently selected frame (so that we can
3089 complete on local vars. */
3091 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3093 if (!BLOCK_SUPERBLOCK (b
))
3095 surrounding_static_block
= b
; /* For elmin of dups */
3098 /* Also catch fields of types defined in this places which match our
3099 text string. Only complete on types visible from current context. */
3101 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3103 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3104 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3106 struct type
*t
= SYMBOL_TYPE (sym
);
3107 enum type_code c
= TYPE_CODE (t
);
3109 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3111 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3113 if (TYPE_FIELD_NAME (t
, j
))
3115 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3116 sym_text
, sym_text_len
, text
, word
);
3124 /* Go through the symtabs and check the externs and statics for
3125 symbols which match. */
3127 ALL_SYMTABS (objfile
, s
)
3130 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3131 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3133 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3137 ALL_SYMTABS (objfile
, s
)
3140 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3141 /* Don't do this block twice. */
3142 if (b
== surrounding_static_block
)
3144 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3146 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3150 return (return_val
);
3153 /* Like make_symbol_completion_list, but returns a list of symbols
3154 defined in a source file FILE. */
3157 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3159 register struct symbol
*sym
;
3160 register struct symtab
*s
;
3161 register struct block
*b
;
3163 /* The symbol we are completing on. Points in same buffer as text. */
3165 /* Length of sym_text. */
3168 /* Now look for the symbol we are supposed to complete on.
3169 FIXME: This should be language-specific. */
3173 char *quote_pos
= NULL
;
3175 /* First see if this is a quoted string. */
3177 for (p
= text
; *p
!= '\0'; ++p
)
3179 if (quote_found
!= '\0')
3181 if (*p
== quote_found
)
3182 /* Found close quote. */
3184 else if (*p
== '\\' && p
[1] == quote_found
)
3185 /* A backslash followed by the quote character
3186 doesn't end the string. */
3189 else if (*p
== '\'' || *p
== '"')
3195 if (quote_found
== '\'')
3196 /* A string within single quotes can be a symbol, so complete on it. */
3197 sym_text
= quote_pos
+ 1;
3198 else if (quote_found
== '"')
3199 /* A double-quoted string is never a symbol, nor does it make sense
3200 to complete it any other way. */
3202 return_val
= (char **) xmalloc (sizeof (char *));
3203 return_val
[0] = NULL
;
3208 /* It is not a quoted string. Break it based on the characters
3209 which are in symbols. */
3212 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3221 sym_text_len
= strlen (sym_text
);
3223 return_val_size
= 10;
3224 return_val_index
= 0;
3225 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3226 return_val
[0] = NULL
;
3228 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3230 s
= lookup_symtab (srcfile
);
3233 /* Maybe they typed the file with leading directories, while the
3234 symbol tables record only its basename. */
3235 const char *tail
= lbasename (srcfile
);
3238 s
= lookup_symtab (tail
);
3241 /* If we have no symtab for that file, return an empty list. */
3243 return (return_val
);
3245 /* Go through this symtab and check the externs and statics for
3246 symbols which match. */
3248 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3249 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3251 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3254 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3255 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3257 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3260 return (return_val
);
3263 /* A helper function for make_source_files_completion_list. It adds
3264 another file name to a list of possible completions, growing the
3265 list as necessary. */
3268 add_filename_to_list (const char *fname
, char *text
, char *word
,
3269 char ***list
, int *list_used
, int *list_alloced
)
3272 size_t fnlen
= strlen (fname
);
3274 if (*list_used
+ 1 >= *list_alloced
)
3277 *list
= (char **) xrealloc ((char *) *list
,
3278 *list_alloced
* sizeof (char *));
3283 /* Return exactly fname. */
3284 new = xmalloc (fnlen
+ 5);
3285 strcpy (new, fname
);
3287 else if (word
> text
)
3289 /* Return some portion of fname. */
3290 new = xmalloc (fnlen
+ 5);
3291 strcpy (new, fname
+ (word
- text
));
3295 /* Return some of TEXT plus fname. */
3296 new = xmalloc (fnlen
+ (text
- word
) + 5);
3297 strncpy (new, word
, text
- word
);
3298 new[text
- word
] = '\0';
3299 strcat (new, fname
);
3301 (*list
)[*list_used
] = new;
3302 (*list
)[++*list_used
] = NULL
;
3306 not_interesting_fname (const char *fname
)
3308 static const char *illegal_aliens
[] = {
3309 "_globals_", /* inserted by coff_symtab_read */
3314 for (i
= 0; illegal_aliens
[i
]; i
++)
3316 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3322 /* Return a NULL terminated array of all source files whose names
3323 begin with matching TEXT. The file names are looked up in the
3324 symbol tables of this program. If the answer is no matchess, then
3325 the return value is an array which contains only a NULL pointer. */
3328 make_source_files_completion_list (char *text
, char *word
)
3330 register struct symtab
*s
;
3331 register struct partial_symtab
*ps
;
3332 register struct objfile
*objfile
;
3334 int list_alloced
= 1;
3336 size_t text_len
= strlen (text
);
3337 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3338 const char *base_name
;
3342 if (!have_full_symbols () && !have_partial_symbols ())
3345 ALL_SYMTABS (objfile
, s
)
3347 if (not_interesting_fname (s
->filename
))
3349 if (!filename_seen (s
->filename
, 1, &first
)
3350 #if HAVE_DOS_BASED_FILE_SYSTEM
3351 && strncasecmp (s
->filename
, text
, text_len
) == 0
3353 && strncmp (s
->filename
, text
, text_len
) == 0
3357 /* This file matches for a completion; add it to the current
3359 add_filename_to_list (s
->filename
, text
, word
,
3360 &list
, &list_used
, &list_alloced
);
3364 /* NOTE: We allow the user to type a base name when the
3365 debug info records leading directories, but not the other
3366 way around. This is what subroutines of breakpoint
3367 command do when they parse file names. */
3368 base_name
= lbasename (s
->filename
);
3369 if (base_name
!= s
->filename
3370 && !filename_seen (base_name
, 1, &first
)
3371 #if HAVE_DOS_BASED_FILE_SYSTEM
3372 && strncasecmp (base_name
, text
, text_len
) == 0
3374 && strncmp (base_name
, text
, text_len
) == 0
3377 add_filename_to_list (base_name
, text
, word
,
3378 &list
, &list_used
, &list_alloced
);
3382 ALL_PSYMTABS (objfile
, ps
)
3384 if (not_interesting_fname (ps
->filename
))
3388 if (!filename_seen (ps
->filename
, 1, &first
)
3389 #if HAVE_DOS_BASED_FILE_SYSTEM
3390 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3392 && strncmp (ps
->filename
, text
, text_len
) == 0
3396 /* This file matches for a completion; add it to the
3397 current list of matches. */
3398 add_filename_to_list (ps
->filename
, text
, word
,
3399 &list
, &list_used
, &list_alloced
);
3404 base_name
= lbasename (ps
->filename
);
3405 if (base_name
!= ps
->filename
3406 && !filename_seen (base_name
, 1, &first
)
3407 #if HAVE_DOS_BASED_FILE_SYSTEM
3408 && strncasecmp (base_name
, text
, text_len
) == 0
3410 && strncmp (base_name
, text
, text_len
) == 0
3413 add_filename_to_list (base_name
, text
, word
,
3414 &list
, &list_used
, &list_alloced
);
3422 /* Determine if PC is in the prologue of a function. The prologue is the area
3423 between the first instruction of a function, and the first executable line.
3424 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3426 If non-zero, func_start is where we think the prologue starts, possibly
3427 by previous examination of symbol table information.
3431 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3433 struct symtab_and_line sal
;
3434 CORE_ADDR func_addr
, func_end
;
3436 /* We have several sources of information we can consult to figure
3438 - Compilers usually emit line number info that marks the prologue
3439 as its own "source line". So the ending address of that "line"
3440 is the end of the prologue. If available, this is the most
3442 - The minimal symbols and partial symbols, which can usually tell
3443 us the starting and ending addresses of a function.
3444 - If we know the function's start address, we can call the
3445 architecture-defined SKIP_PROLOGUE function to analyze the
3446 instruction stream and guess where the prologue ends.
3447 - Our `func_start' argument; if non-zero, this is the caller's
3448 best guess as to the function's entry point. At the time of
3449 this writing, handle_inferior_event doesn't get this right, so
3450 it should be our last resort. */
3452 /* Consult the partial symbol table, to find which function
3454 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3456 CORE_ADDR prologue_end
;
3458 /* We don't even have minsym information, so fall back to using
3459 func_start, if given. */
3461 return 1; /* We *might* be in a prologue. */
3463 prologue_end
= SKIP_PROLOGUE (func_start
);
3465 return func_start
<= pc
&& pc
< prologue_end
;
3468 /* If we have line number information for the function, that's
3469 usually pretty reliable. */
3470 sal
= find_pc_line (func_addr
, 0);
3472 /* Now sal describes the source line at the function's entry point,
3473 which (by convention) is the prologue. The end of that "line",
3474 sal.end, is the end of the prologue.
3476 Note that, for functions whose source code is all on a single
3477 line, the line number information doesn't always end up this way.
3478 So we must verify that our purported end-of-prologue address is
3479 *within* the function, not at its start or end. */
3481 || sal
.end
<= func_addr
3482 || func_end
<= sal
.end
)
3484 /* We don't have any good line number info, so use the minsym
3485 information, together with the architecture-specific prologue
3487 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3489 return func_addr
<= pc
&& pc
< prologue_end
;
3492 /* We have line number info, and it looks good. */
3493 return func_addr
<= pc
&& pc
< sal
.end
;
3497 /* Begin overload resolution functions */
3498 /* Helper routine for make_symbol_completion_list. */
3500 static int sym_return_val_size
;
3501 static int sym_return_val_index
;
3502 static struct symbol
**sym_return_val
;
3504 /* Test to see if the symbol specified by SYMNAME (which is already
3505 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3506 characters. If so, add it to the current completion list. */
3509 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3514 /* Get the demangled name without parameters */
3515 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
3518 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
3519 strcpy (sym_name
, SYMBOL_NAME (sym
));
3522 /* skip symbols that cannot match */
3523 if (strcmp (sym_name
, oload_name
) != 0)
3529 /* If there is no type information, we can't do anything, so skip */
3530 if (SYMBOL_TYPE (sym
) == NULL
)
3533 /* skip any symbols that we've already considered. */
3534 for (i
= 0; i
< sym_return_val_index
; ++i
)
3535 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3538 /* We have a match for an overload instance, so add SYM to the current list
3539 * of overload instances */
3540 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3542 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3543 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3545 sym_return_val
[sym_return_val_index
++] = sym
;
3546 sym_return_val
[sym_return_val_index
] = NULL
;
3551 /* Return a null-terminated list of pointers to function symbols that
3552 * match name of the supplied symbol FSYM.
3553 * This is used in finding all overloaded instances of a function name.
3554 * This has been modified from make_symbol_completion_list. */
3558 make_symbol_overload_list (struct symbol
*fsym
)
3560 register struct symbol
*sym
;
3561 register struct symtab
*s
;
3562 register struct partial_symtab
*ps
;
3563 register struct objfile
*objfile
;
3564 register struct block
*b
, *surrounding_static_block
= 0;
3566 /* The name we are completing on. */
3567 char *oload_name
= NULL
;
3568 /* Length of name. */
3569 int oload_name_len
= 0;
3571 /* Look for the symbol we are supposed to complete on.
3572 * FIXME: This should be language-specific. */
3574 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
3577 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
3578 strcpy (oload_name
, SYMBOL_NAME (fsym
));
3580 oload_name_len
= strlen (oload_name
);
3582 sym_return_val_size
= 100;
3583 sym_return_val_index
= 0;
3584 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3585 sym_return_val
[0] = NULL
;
3587 /* Look through the partial symtabs for all symbols which begin
3588 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3590 ALL_PSYMTABS (objfile
, ps
)
3592 struct partial_symbol
**psym
;
3594 /* If the psymtab's been read in we'll get it when we search
3595 through the blockvector. */
3599 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3600 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3601 + ps
->n_global_syms
);
3604 /* If interrupted, then quit. */
3606 /* This will cause the symbol table to be read if it has not yet been */
3607 s
= PSYMTAB_TO_SYMTAB (ps
);
3610 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3611 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3612 + ps
->n_static_syms
);
3616 /* This will cause the symbol table to be read if it has not yet been */
3617 s
= PSYMTAB_TO_SYMTAB (ps
);
3621 /* Search upwards from currently selected frame (so that we can
3622 complete on local vars. */
3624 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3626 if (!BLOCK_SUPERBLOCK (b
))
3628 surrounding_static_block
= b
; /* For elimination of dups */
3631 /* Also catch fields of types defined in this places which match our
3632 text string. Only complete on types visible from current context. */
3634 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3636 overload_list_add_symbol (sym
, oload_name
);
3640 /* Go through the symtabs and check the externs and statics for
3641 symbols which match. */
3643 ALL_SYMTABS (objfile
, s
)
3646 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3647 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3649 overload_list_add_symbol (sym
, oload_name
);
3653 ALL_SYMTABS (objfile
, s
)
3656 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3657 /* Don't do this block twice. */
3658 if (b
== surrounding_static_block
)
3660 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3662 overload_list_add_symbol (sym
, oload_name
);
3668 return (sym_return_val
);
3671 /* End of overload resolution functions */
3673 struct symtabs_and_lines
3674 decode_line_spec (char *string
, int funfirstline
)
3676 struct symtabs_and_lines sals
;
3678 error ("Empty line specification.");
3679 sals
= decode_line_1 (&string
, funfirstline
,
3680 current_source_symtab
, current_source_line
,
3683 error ("Junk at end of line specification: %s", string
);
3688 static char *name_of_main
;
3691 set_main_name (const char *name
)
3693 if (name_of_main
!= NULL
)
3695 xfree (name_of_main
);
3696 name_of_main
= NULL
;
3700 name_of_main
= xstrdup (name
);
3707 if (name_of_main
!= NULL
)
3708 return name_of_main
;
3715 _initialize_symtab (void)
3717 add_info ("variables", variables_info
,
3718 "All global and static variable names, or those matching REGEXP.");
3720 add_com ("whereis", class_info
, variables_info
,
3721 "All global and static variable names, or those matching REGEXP.");
3723 add_info ("functions", functions_info
,
3724 "All function names, or those matching REGEXP.");
3727 /* FIXME: This command has at least the following problems:
3728 1. It prints builtin types (in a very strange and confusing fashion).
3729 2. It doesn't print right, e.g. with
3730 typedef struct foo *FOO
3731 type_print prints "FOO" when we want to make it (in this situation)
3732 print "struct foo *".
3733 I also think "ptype" or "whatis" is more likely to be useful (but if
3734 there is much disagreement "info types" can be fixed). */
3735 add_info ("types", types_info
,
3736 "All type names, or those matching REGEXP.");
3739 add_info ("methods", methods_info
,
3740 "All method names, or those matching REGEXP::REGEXP.\n\
3741 If the class qualifier is omitted, it is assumed to be the current scope.\n\
3742 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
3745 add_info ("sources", sources_info
,
3746 "Source files in the program.");
3748 add_com ("rbreak", class_breakpoint
, rbreak_command
,
3749 "Set a breakpoint for all functions matching REGEXP.");
3753 add_com ("lf", class_info
, sources_info
, "Source files in the program");
3754 add_com ("lg", class_info
, variables_info
,
3755 "All global and static variable names, or those matching REGEXP.");
3758 /* Initialize the one built-in type that isn't language dependent... */
3759 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
3760 "<unknown type>", (struct objfile
*) NULL
);