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
;
147 /* First, search for an exact match */
149 ALL_SYMTABS (objfile
, s
)
150 if (FILENAME_CMP (name
, s
->filename
) == 0)
153 /* Now, search for a matching tail (only if name doesn't have any dirs) */
155 if (lbasename (name
) == name
)
156 ALL_SYMTABS (objfile
, s
)
158 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
162 /* Same search rules as above apply here, but now we look thru the
165 ps
= lookup_partial_symtab (name
);
170 error ("Internal: readin %s pst for `%s' found when no symtab found.",
173 s
= PSYMTAB_TO_SYMTAB (ps
);
178 /* At this point, we have located the psymtab for this file, but
179 the conversion to a symtab has failed. This usually happens
180 when we are looking up an include file. In this case,
181 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
182 been created. So, we need to run through the symtabs again in
183 order to find the file.
184 XXX - This is a crock, and should be fixed inside of the the
185 symbol parsing routines. */
189 /* Lookup the partial symbol table of a source file named NAME.
190 *If* there is no '/' in the name, a match after a '/'
191 in the psymtab filename will also work. */
193 struct partial_symtab
*
194 lookup_partial_symtab (const char *name
)
196 register struct partial_symtab
*pst
;
197 register struct objfile
*objfile
;
199 ALL_PSYMTABS (objfile
, pst
)
201 if (FILENAME_CMP (name
, pst
->filename
) == 0)
207 /* Now, search for a matching tail (only if name doesn't have any dirs) */
209 if (lbasename (name
) == name
)
210 ALL_PSYMTABS (objfile
, pst
)
212 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
219 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
220 full method name, which consist of the class name (from T), the unadorned
221 method name from METHOD_ID, and the signature for the specific overload,
222 specified by SIGNATURE_ID. Note that this function is g++ specific. */
225 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
227 int mangled_name_len
;
229 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
230 struct fn_field
*method
= &f
[signature_id
];
231 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
232 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
233 char *newname
= type_name_no_tag (type
);
235 /* Does the form of physname indicate that it is the full mangled name
236 of a constructor (not just the args)? */
237 int is_full_physname_constructor
;
240 int is_destructor
= is_destructor_name (physname
);
241 /* Need a new type prefix. */
242 char *const_prefix
= method
->is_const
? "C" : "";
243 char *volatile_prefix
= method
->is_volatile
? "V" : "";
245 int len
= (newname
== NULL
? 0 : strlen (newname
));
247 if (is_operator_name (field_name
))
248 return xstrdup (physname
);
250 is_full_physname_constructor
= is_constructor_name (physname
);
253 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
256 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
258 if (is_destructor
|| is_full_physname_constructor
)
260 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
261 strcpy (mangled_name
, physname
);
267 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
269 else if (physname
[0] == 't' || physname
[0] == 'Q')
271 /* The physname for template and qualified methods already includes
273 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
279 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
281 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
282 + strlen (buf
) + len
+ strlen (physname
) + 1);
285 mangled_name
= (char *) xmalloc (mangled_name_len
);
287 mangled_name
[0] = '\0';
289 strcpy (mangled_name
, field_name
);
291 strcat (mangled_name
, buf
);
292 /* If the class doesn't have a name, i.e. newname NULL, then we just
293 mangle it using 0 for the length of the class. Thus it gets mangled
294 as something starting with `::' rather than `classname::'. */
296 strcat (mangled_name
, newname
);
298 strcat (mangled_name
, physname
);
299 return (mangled_name
);
304 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
306 struct partial_symtab
*
307 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
309 register struct partial_symtab
*pst
;
310 register struct objfile
*objfile
;
312 ALL_PSYMTABS (objfile
, pst
)
314 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
316 struct minimal_symbol
*msymbol
;
317 struct partial_symtab
*tpst
;
319 /* An objfile that has its functions reordered might have
320 many partial symbol tables containing the PC, but
321 we want the partial symbol table that contains the
322 function containing the PC. */
323 if (!(objfile
->flags
& OBJF_REORDERED
) &&
324 section
== 0) /* can't validate section this way */
327 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
331 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
333 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
335 struct partial_symbol
*p
;
337 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
339 && SYMBOL_VALUE_ADDRESS (p
)
340 == SYMBOL_VALUE_ADDRESS (msymbol
))
350 /* Find which partial symtab contains PC. Return 0 if none.
351 Backward compatibility, no section */
353 struct partial_symtab
*
354 find_pc_psymtab (CORE_ADDR pc
)
356 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
359 /* Find which partial symbol within a psymtab matches PC and SECTION.
360 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
362 struct partial_symbol
*
363 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
366 struct partial_symbol
*best
= NULL
, *p
, **pp
;
370 psymtab
= find_pc_sect_psymtab (pc
, section
);
374 /* Cope with programs that start at address 0 */
375 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
377 /* Search the global symbols as well as the static symbols, so that
378 find_pc_partial_function doesn't use a minimal symbol and thus
379 cache a bad endaddr. */
380 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
381 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
382 < psymtab
->n_global_syms
);
386 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
387 && SYMBOL_CLASS (p
) == LOC_BLOCK
388 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
389 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
390 || (psymtab
->textlow
== 0
391 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
393 if (section
) /* match on a specific section */
395 fixup_psymbol_section (p
, psymtab
->objfile
);
396 if (SYMBOL_BFD_SECTION (p
) != section
)
399 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
404 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
405 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
406 < psymtab
->n_static_syms
);
410 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
411 && SYMBOL_CLASS (p
) == LOC_BLOCK
412 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
413 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
414 || (psymtab
->textlow
== 0
415 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
417 if (section
) /* match on a specific section */
419 fixup_psymbol_section (p
, psymtab
->objfile
);
420 if (SYMBOL_BFD_SECTION (p
) != section
)
423 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
431 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
432 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
434 struct partial_symbol
*
435 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
437 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
440 /* Debug symbols usually don't have section information. We need to dig that
441 out of the minimal symbols and stash that in the debug symbol. */
444 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
446 struct minimal_symbol
*msym
;
447 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
451 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
452 ginfo
->section
= SYMBOL_SECTION (msym
);
457 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
462 if (SYMBOL_BFD_SECTION (sym
))
465 fixup_section (&sym
->ginfo
, objfile
);
470 struct partial_symbol
*
471 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
476 if (SYMBOL_BFD_SECTION (psym
))
479 fixup_section (&psym
->ginfo
, objfile
);
484 /* Find the definition for a specified symbol name NAME
485 in namespace NAMESPACE, visible from lexical block BLOCK.
486 Returns the struct symbol pointer, or zero if no symbol is found.
487 If SYMTAB is non-NULL, store the symbol table in which the
488 symbol was found there, or NULL if not found.
489 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
490 NAME is a field of the current implied argument `this'. If so set
491 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
492 BLOCK_FOUND is set to the block in which NAME is found (in the case of
493 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
495 /* This function has a bunch of loops in it and it would seem to be
496 attractive to put in some QUIT's (though I'm not really sure
497 whether it can run long enough to be really important). But there
498 are a few calls for which it would appear to be bad news to quit
499 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
500 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
501 code below which can error(), but that probably doesn't affect
502 these calls since they are looking for a known variable and thus
503 can probably assume it will never hit the C++ code). */
506 lookup_symbol (const char *name
, const struct block
*block
,
507 const namespace_enum
namespace, int *is_a_field_of_this
,
508 struct symtab
**symtab
)
510 char *modified_name
= NULL
;
511 char *modified_name2
= NULL
;
512 int needtofreename
= 0;
513 struct symbol
*returnval
;
515 if (case_sensitivity
== case_sensitive_off
)
521 copy
= (char *) alloca (len
+ 1);
522 for (i
= 0; i
< len
; i
++)
523 copy
[i
] = tolower (name
[i
]);
525 modified_name
= copy
;
528 modified_name
= (char *) name
;
530 /* If we are using C++ language, demangle the name before doing a lookup, so
531 we can always binary search. */
532 if (current_language
->la_language
== language_cplus
)
534 modified_name2
= cplus_demangle (modified_name
, DMGL_ANSI
| DMGL_PARAMS
);
537 modified_name
= modified_name2
;
542 returnval
= lookup_symbol_aux (modified_name
, block
, namespace,
543 is_a_field_of_this
, symtab
);
545 xfree (modified_name2
);
550 static struct symbol
*
551 lookup_symbol_aux (const char *name
, const struct block
*block
,
552 const namespace_enum
namespace, int *is_a_field_of_this
,
553 struct symtab
**symtab
)
555 register struct symbol
*sym
;
556 register struct symtab
*s
= NULL
;
557 register struct partial_symtab
*ps
;
558 register struct blockvector
*bv
;
559 register struct objfile
*objfile
= NULL
;
560 register struct block
*b
;
561 register struct minimal_symbol
*msymbol
;
564 /* Search specified block and its superiors. */
568 sym
= lookup_block_symbol (block
, name
, namespace);
574 /* Search the list of symtabs for one which contains the
575 address of the start of this block. */
576 ALL_SYMTABS (objfile
, s
)
578 bv
= BLOCKVECTOR (s
);
579 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
580 if (BLOCK_START (b
) <= BLOCK_START (block
)
581 && BLOCK_END (b
) > BLOCK_START (block
))
588 return fixup_symbol_section (sym
, objfile
);
590 block
= BLOCK_SUPERBLOCK (block
);
593 /* FIXME: this code is never executed--block is always NULL at this
594 point. What is it trying to do, anyway? We already should have
595 checked the STATIC_BLOCK above (it is the superblock of top-level
596 blocks). Why is VAR_NAMESPACE special-cased? */
597 /* Don't need to mess with the psymtabs; if we have a block,
598 that file is read in. If we don't, then we deal later with
599 all the psymtab stuff that needs checking. */
600 /* Note (RT): The following never-executed code looks unnecessary to me also.
601 * If we change the code to use the original (passed-in)
602 * value of 'block', we could cause it to execute, but then what
603 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
604 * 'block' was already searched by the above code. And the STATIC_BLOCK's
605 * of *other* symtabs (those files not containing 'block' lexically)
606 * should not contain 'block' address-wise. So we wouldn't expect this
607 * code to find any 'sym''s that were not found above. I vote for
608 * deleting the following paragraph of code.
610 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
613 /* Find the right symtab. */
614 ALL_SYMTABS (objfile
, s
)
616 bv
= BLOCKVECTOR (s
);
617 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
618 if (BLOCK_START (b
) <= BLOCK_START (block
)
619 && BLOCK_END (b
) > BLOCK_START (block
))
621 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
627 return fixup_symbol_section (sym
, objfile
);
634 /* C++: If requested to do so by the caller,
635 check to see if NAME is a field of `this'. */
636 if (is_a_field_of_this
)
638 struct value
*v
= value_of_this (0);
640 *is_a_field_of_this
= 0;
641 if (v
&& check_field (v
, name
))
643 *is_a_field_of_this
= 1;
650 /* Now search all global blocks. Do the symtab's first, then
651 check the psymtab's. If a psymtab indicates the existence
652 of the desired name as a global, then do psymtab-to-symtab
653 conversion on the fly and return the found symbol. */
655 ALL_SYMTABS (objfile
, s
)
657 bv
= BLOCKVECTOR (s
);
658 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
659 sym
= lookup_block_symbol (block
, name
, namespace);
665 return fixup_symbol_section (sym
, objfile
);
671 /* Check for the possibility of the symbol being a function or
672 a mangled variable that is stored in one of the minimal symbol tables.
673 Eventually, all global symbols might be resolved in this way. */
675 if (namespace == VAR_NAMESPACE
)
677 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
680 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
681 SYMBOL_BFD_SECTION (msymbol
));
684 /* This is a function which has a symtab for its address. */
685 bv
= BLOCKVECTOR (s
);
686 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
687 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
689 /* We kept static functions in minimal symbol table as well as
690 in static scope. We want to find them in the symbol table. */
693 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
694 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
698 /* sym == 0 if symbol was found in the minimal symbol table
699 but not in the symtab.
700 Return 0 to use the msymbol definition of "foo_".
702 This happens for Fortran "foo_" symbols,
703 which are "foo" in the symtab.
705 This can also happen if "asm" is used to make a
706 regular symbol but not a debugging symbol, e.g.
713 return fixup_symbol_section (sym
, objfile
);
715 else if (MSYMBOL_TYPE (msymbol
) != mst_text
716 && MSYMBOL_TYPE (msymbol
) != mst_file_text
717 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
719 /* This is a mangled variable, look it up by its
721 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
722 namespace, is_a_field_of_this
, symtab
);
724 /* There are no debug symbols for this file, or we are looking
725 for an unmangled variable.
726 Try to find a matching static symbol below. */
732 ALL_PSYMTABS (objfile
, ps
)
734 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
736 s
= PSYMTAB_TO_SYMTAB (ps
);
737 bv
= BLOCKVECTOR (s
);
738 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
739 sym
= lookup_block_symbol (block
, name
, namespace);
742 /* This shouldn't be necessary, but as a last resort
743 * try looking in the statics even though the psymtab
744 * claimed the symbol was global. It's possible that
745 * the psymtab gets it wrong in some cases.
747 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
748 sym
= lookup_block_symbol (block
, name
, namespace);
750 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
751 %s may be an inlined function, or may be a template function\n\
752 (if a template, try specifying an instantiation: %s<type>).",
753 name
, ps
->filename
, name
, name
);
757 return fixup_symbol_section (sym
, objfile
);
761 /* Now search all static file-level symbols.
762 Not strictly correct, but more useful than an error.
763 Do the symtabs first, then check the psymtabs.
764 If a psymtab indicates the existence
765 of the desired name as a file-level static, then do psymtab-to-symtab
766 conversion on the fly and return the found symbol. */
768 ALL_SYMTABS (objfile
, s
)
770 bv
= BLOCKVECTOR (s
);
771 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
772 sym
= lookup_block_symbol (block
, name
, namespace);
778 return fixup_symbol_section (sym
, objfile
);
782 ALL_PSYMTABS (objfile
, ps
)
784 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
786 s
= PSYMTAB_TO_SYMTAB (ps
);
787 bv
= BLOCKVECTOR (s
);
788 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
789 sym
= lookup_block_symbol (block
, name
, namespace);
792 /* This shouldn't be necessary, but as a last resort
793 * try looking in the globals even though the psymtab
794 * claimed the symbol was static. It's possible that
795 * the psymtab gets it wrong in some cases.
797 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
798 sym
= lookup_block_symbol (block
, name
, namespace);
800 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
801 %s may be an inlined function, or may be a template function\n\
802 (if a template, try specifying an instantiation: %s<type>).",
803 name
, ps
->filename
, name
, name
);
807 return fixup_symbol_section (sym
, objfile
);
813 /* Check for the possibility of the symbol being a function or
814 a global variable that is stored in one of the minimal symbol tables.
815 The "minimal symbol table" is built from linker-supplied info.
817 RT: I moved this check to last, after the complete search of
818 the global (p)symtab's and static (p)symtab's. For HP-generated
819 symbol tables, this check was causing a premature exit from
820 lookup_symbol with NULL return, and thus messing up symbol lookups
821 of things like "c::f". It seems to me a check of the minimal
822 symbol table ought to be a last resort in any case. I'm vaguely
823 worried about the comment below which talks about FORTRAN routines "foo_"
824 though... is it saying we need to do the "minsym" check before
825 the static check in this case?
828 if (namespace == VAR_NAMESPACE
)
830 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
833 /* OK, we found a minimal symbol in spite of not
834 * finding any symbol. There are various possible
835 * explanations for this. One possibility is the symbol
836 * exists in code not compiled -g. Another possibility
837 * is that the 'psymtab' isn't doing its job.
838 * A third possibility, related to #2, is that we were confused
839 * by name-mangling. For instance, maybe the psymtab isn't
840 * doing its job because it only know about demangled
841 * names, but we were given a mangled name...
844 /* We first use the address in the msymbol to try to
845 * locate the appropriate symtab. Note that find_pc_symtab()
846 * has a side-effect of doing psymtab-to-symtab expansion,
847 * for the found symtab.
849 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
852 bv
= BLOCKVECTOR (s
);
853 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
854 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
856 /* We kept static functions in minimal symbol table as well as
857 in static scope. We want to find them in the symbol table. */
860 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
861 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
864 /* If we found one, return it */
872 /* If we get here with sym == 0, the symbol was
873 found in the minimal symbol table
874 but not in the symtab.
875 Fall through and return 0 to use the msymbol
876 definition of "foo_".
877 (Note that outer code generally follows up a call
878 to this routine with a call to lookup_minimal_symbol(),
879 so a 0 return means we'll just flow into that other routine).
881 This happens for Fortran "foo_" symbols,
882 which are "foo" in the symtab.
884 This can also happen if "asm" is used to make a
885 regular symbol but not a debugging symbol, e.g.
891 /* If the lookup-by-address fails, try repeating the
892 * entire lookup process with the symbol name from
893 * the msymbol (if different from the original symbol name).
895 else if (MSYMBOL_TYPE (msymbol
) != mst_text
896 && MSYMBOL_TYPE (msymbol
) != mst_file_text
897 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
899 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
900 namespace, is_a_field_of_this
, symtab
);
912 /* Look, in partial_symtab PST, for symbol NAME. Check the global
913 symbols if GLOBAL, the static symbols if not */
915 static struct partial_symbol
*
916 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
917 namespace_enum
namespace)
919 struct partial_symbol
*temp
;
920 struct partial_symbol
**start
, **psym
;
921 struct partial_symbol
**top
, **bottom
, **center
;
922 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
923 int do_linear_search
= 1;
930 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
931 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
933 if (global
) /* This means we can use a binary search. */
935 do_linear_search
= 0;
937 /* Binary search. This search is guaranteed to end with center
938 pointing at the earliest partial symbol with the correct
939 name. At that point *all* partial symbols with that name
940 will be checked against the correct namespace. */
943 top
= start
+ length
- 1;
946 center
= bottom
+ (top
- bottom
) / 2;
948 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
949 if (!do_linear_search
950 && (SYMBOL_LANGUAGE (*center
) == language_java
))
952 do_linear_search
= 1;
954 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
963 if (!(top
== bottom
))
964 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
966 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
967 we don't have to force a linear search on C++. Probably holds true
968 for JAVA as well, no way to check.*/
969 while (SYMBOL_MATCHES_NAME (*top
,name
))
971 if (SYMBOL_NAMESPACE (*top
) == namespace)
979 /* Can't use a binary search or else we found during the binary search that
980 we should also do a linear search. */
982 if (do_linear_search
)
984 for (psym
= start
; psym
< start
+ length
; psym
++)
986 if (namespace == SYMBOL_NAMESPACE (*psym
))
988 if (SYMBOL_MATCHES_NAME (*psym
, name
))
999 /* Look up a type named NAME in the struct_namespace. The type returned
1000 must not be opaque -- i.e., must have at least one field defined
1002 This code was modelled on lookup_symbol -- the parts not relevant to looking
1003 up types were just left out. In particular it's assumed here that types
1004 are available in struct_namespace and only at file-static or global blocks. */
1008 lookup_transparent_type (const char *name
)
1010 register struct symbol
*sym
;
1011 register struct symtab
*s
= NULL
;
1012 register struct partial_symtab
*ps
;
1013 struct blockvector
*bv
;
1014 register struct objfile
*objfile
;
1015 register struct block
*block
;
1017 /* Now search all the global symbols. Do the symtab's first, then
1018 check the psymtab's. If a psymtab indicates the existence
1019 of the desired name as a global, then do psymtab-to-symtab
1020 conversion on the fly and return the found symbol. */
1022 ALL_SYMTABS (objfile
, s
)
1024 bv
= BLOCKVECTOR (s
);
1025 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1026 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1027 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1029 return SYMBOL_TYPE (sym
);
1033 ALL_PSYMTABS (objfile
, ps
)
1035 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1037 s
= PSYMTAB_TO_SYMTAB (ps
);
1038 bv
= BLOCKVECTOR (s
);
1039 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1040 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1043 /* This shouldn't be necessary, but as a last resort
1044 * try looking in the statics even though the psymtab
1045 * claimed the symbol was global. It's possible that
1046 * the psymtab gets it wrong in some cases.
1048 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1049 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1051 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1052 %s may be an inlined function, or may be a template function\n\
1053 (if a template, try specifying an instantiation: %s<type>).",
1054 name
, ps
->filename
, name
, name
);
1056 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1057 return SYMBOL_TYPE (sym
);
1061 /* Now search the static file-level symbols.
1062 Not strictly correct, but more useful than an error.
1063 Do the symtab's first, then
1064 check the psymtab's. If a psymtab indicates the existence
1065 of the desired name as a file-level static, then do psymtab-to-symtab
1066 conversion on the fly and return the found symbol.
1069 ALL_SYMTABS (objfile
, s
)
1071 bv
= BLOCKVECTOR (s
);
1072 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1073 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1074 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1076 return SYMBOL_TYPE (sym
);
1080 ALL_PSYMTABS (objfile
, ps
)
1082 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1084 s
= PSYMTAB_TO_SYMTAB (ps
);
1085 bv
= BLOCKVECTOR (s
);
1086 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1087 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1090 /* This shouldn't be necessary, but as a last resort
1091 * try looking in the globals even though the psymtab
1092 * claimed the symbol was static. It's possible that
1093 * the psymtab gets it wrong in some cases.
1095 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1096 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1098 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1099 %s may be an inlined function, or may be a template function\n\
1100 (if a template, try specifying an instantiation: %s<type>).",
1101 name
, ps
->filename
, name
, name
);
1103 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1104 return SYMBOL_TYPE (sym
);
1107 return (struct type
*) 0;
1111 /* Find the psymtab containing main(). */
1112 /* FIXME: What about languages without main() or specially linked
1113 executables that have no main() ? */
1115 struct partial_symtab
*
1116 find_main_psymtab (void)
1118 register struct partial_symtab
*pst
;
1119 register struct objfile
*objfile
;
1121 ALL_PSYMTABS (objfile
, pst
)
1123 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1131 /* Search BLOCK for symbol NAME in NAMESPACE.
1133 Note that if NAME is the demangled form of a C++ symbol, we will fail
1134 to find a match during the binary search of the non-encoded names, but
1135 for now we don't worry about the slight inefficiency of looking for
1136 a match we'll never find, since it will go pretty quick. Once the
1137 binary search terminates, we drop through and do a straight linear
1138 search on the symbols. Each symbol which is marked as being a C++
1139 symbol (language_cplus set) has both the encoded and non-encoded names
1140 tested for a match. */
1143 lookup_block_symbol (register const struct block
*block
, const char *name
,
1144 const namespace_enum
namespace)
1146 register int bot
, top
, inc
;
1147 register struct symbol
*sym
;
1148 register struct symbol
*sym_found
= NULL
;
1149 register int do_linear_search
= 1;
1151 /* If the blocks's symbols were sorted, start with a binary search. */
1153 if (BLOCK_SHOULD_SORT (block
))
1155 /* Reset the linear search flag so if the binary search fails, we
1156 won't do the linear search once unless we find some reason to
1159 do_linear_search
= 0;
1160 top
= BLOCK_NSYMS (block
);
1163 /* Advance BOT to not far before the first symbol whose name is NAME. */
1167 inc
= (top
- bot
+ 1);
1168 /* No need to keep binary searching for the last few bits worth. */
1173 inc
= (inc
>> 1) + bot
;
1174 sym
= BLOCK_SYM (block
, inc
);
1175 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1177 do_linear_search
= 1;
1179 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1183 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1187 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1197 /* Now scan forward until we run out of symbols, find one whose
1198 name is greater than NAME, or find one we want. If there is
1199 more than one symbol with the right name and namespace, we
1200 return the first one; I believe it is now impossible for us
1201 to encounter two symbols with the same name and namespace
1202 here, because blocks containing argument symbols are no
1205 top
= BLOCK_NSYMS (block
);
1208 sym
= BLOCK_SYM (block
, bot
);
1209 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1210 SYMBOL_MATCHES_NAME (sym
, name
))
1214 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1222 /* Here if block isn't sorted, or we fail to find a match during the
1223 binary search above. If during the binary search above, we find a
1224 symbol which is a Java symbol, then we have re-enabled the linear
1225 search flag which was reset when starting the binary search.
1227 This loop is equivalent to the loop above, but hacked greatly for speed.
1229 Note that parameter symbols do not always show up last in the
1230 list; this loop makes sure to take anything else other than
1231 parameter symbols first; it only uses parameter symbols as a
1232 last resort. Note that this only takes up extra computation
1235 if (do_linear_search
)
1237 top
= BLOCK_NSYMS (block
);
1241 sym
= BLOCK_SYM (block
, bot
);
1242 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1243 SYMBOL_MATCHES_NAME (sym
, name
))
1245 /* If SYM has aliases, then use any alias that is active
1246 at the current PC. If no alias is active at the current
1247 PC, then use the main symbol.
1249 ?!? Is checking the current pc correct? Is this routine
1250 ever called to look up a symbol from another context?
1252 FIXME: No, it's not correct. If someone sets a
1253 conditional breakpoint at an address, then the
1254 breakpoint's `struct expression' should refer to the
1255 `struct symbol' appropriate for the breakpoint's
1256 address, which may not be the PC.
1258 Even if it were never called from another context,
1259 it's totally bizarre for lookup_symbol's behavior to
1260 depend on the value of the inferior's current PC. We
1261 should pass in the appropriate PC as well as the
1262 block. The interface to lookup_symbol should change
1263 to require the caller to provide a PC. */
1265 if (SYMBOL_ALIASES (sym
))
1266 sym
= find_active_alias (sym
, read_pc ());
1269 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1270 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1271 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1272 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1273 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1274 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1282 return (sym_found
); /* Will be NULL if not found. */
1285 /* Given a main symbol SYM and ADDR, search through the alias
1286 list to determine if an alias is active at ADDR and return
1289 If no alias is active, then return SYM. */
1291 static struct symbol
*
1292 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1294 struct range_list
*r
;
1295 struct alias_list
*aliases
;
1297 /* If we have aliases, check them first. */
1298 aliases
= SYMBOL_ALIASES (sym
);
1302 if (!SYMBOL_RANGES (aliases
->sym
))
1303 return aliases
->sym
;
1304 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1306 if (r
->start
<= addr
&& r
->end
> addr
)
1307 return aliases
->sym
;
1309 aliases
= aliases
->next
;
1312 /* Nothing found, return the main symbol. */
1317 /* Return the symbol for the function which contains a specified
1318 lexical block, described by a struct block BL. */
1321 block_function (struct block
*bl
)
1323 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1324 bl
= BLOCK_SUPERBLOCK (bl
);
1326 return BLOCK_FUNCTION (bl
);
1329 /* Find the symtab associated with PC and SECTION. Look through the
1330 psymtabs and read in another symtab if necessary. */
1333 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1335 register struct block
*b
;
1336 struct blockvector
*bv
;
1337 register struct symtab
*s
= NULL
;
1338 register struct symtab
*best_s
= NULL
;
1339 register struct partial_symtab
*ps
;
1340 register struct objfile
*objfile
;
1341 CORE_ADDR distance
= 0;
1343 /* Search all symtabs for the one whose file contains our address, and which
1344 is the smallest of all the ones containing the address. This is designed
1345 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1346 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1347 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1349 This happens for native ecoff format, where code from included files
1350 gets its own symtab. The symtab for the included file should have
1351 been read in already via the dependency mechanism.
1352 It might be swifter to create several symtabs with the same name
1353 like xcoff does (I'm not sure).
1355 It also happens for objfiles that have their functions reordered.
1356 For these, the symtab we are looking for is not necessarily read in. */
1358 ALL_SYMTABS (objfile
, s
)
1360 bv
= BLOCKVECTOR (s
);
1361 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1363 if (BLOCK_START (b
) <= pc
1364 && BLOCK_END (b
) > pc
1366 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1368 /* For an objfile that has its functions reordered,
1369 find_pc_psymtab will find the proper partial symbol table
1370 and we simply return its corresponding symtab. */
1371 /* In order to better support objfiles that contain both
1372 stabs and coff debugging info, we continue on if a psymtab
1374 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1376 ps
= find_pc_sect_psymtab (pc
, section
);
1378 return PSYMTAB_TO_SYMTAB (ps
);
1384 for (i
= 0; i
< b
->nsyms
; i
++)
1386 fixup_symbol_section (b
->sym
[i
], objfile
);
1387 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1391 continue; /* no symbol in this symtab matches section */
1393 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1402 ps
= find_pc_sect_psymtab (pc
, section
);
1406 /* Might want to error() here (in case symtab is corrupt and
1407 will cause a core dump), but maybe we can successfully
1408 continue, so let's not. */
1410 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1412 s
= PSYMTAB_TO_SYMTAB (ps
);
1417 /* Find the symtab associated with PC. Look through the psymtabs and
1418 read in another symtab if necessary. Backward compatibility, no section */
1421 find_pc_symtab (CORE_ADDR pc
)
1423 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1429 /* Find the closest symbol value (of any sort -- function or variable)
1430 for a given address value. Slow but complete. (currently unused,
1431 mainly because it is too slow. We could fix it if each symtab and
1432 psymtab had contained in it the addresses ranges of each of its
1433 sections, which also would be required to make things like "info
1434 line *0x2345" cause psymtabs to be converted to symtabs). */
1437 find_addr_symbol (CORE_ADDR addr
, struct symtab
**symtabp
, CORE_ADDR
*symaddrp
)
1439 struct symtab
*symtab
, *best_symtab
;
1440 struct objfile
*objfile
;
1441 register int bot
, top
;
1442 register struct symbol
*sym
;
1443 register CORE_ADDR sym_addr
;
1444 struct block
*block
;
1447 /* Info on best symbol seen so far */
1449 register CORE_ADDR best_sym_addr
= 0;
1450 struct symbol
*best_sym
= 0;
1452 /* FIXME -- we should pull in all the psymtabs, too! */
1453 ALL_SYMTABS (objfile
, symtab
)
1455 /* Search the global and static blocks in this symtab for
1456 the closest symbol-address to the desired address. */
1458 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1461 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1462 top
= BLOCK_NSYMS (block
);
1463 for (bot
= 0; bot
< top
; bot
++)
1465 sym
= BLOCK_SYM (block
, bot
);
1466 switch (SYMBOL_CLASS (sym
))
1470 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1474 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1475 /* An indirect symbol really lives at *sym_addr,
1476 * so an indirection needs to be done.
1477 * However, I am leaving this commented out because it's
1478 * expensive, and it's possible that symbolization
1479 * could be done without an active process (in
1480 * case this read_memory will fail). RT
1481 sym_addr = read_memory_unsigned_integer
1482 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1487 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1494 if (sym_addr
<= addr
)
1495 if (sym_addr
> best_sym_addr
)
1497 /* Quit if we found an exact match. */
1499 best_sym_addr
= sym_addr
;
1500 best_symtab
= symtab
;
1501 if (sym_addr
== addr
)
1510 *symtabp
= best_symtab
;
1512 *symaddrp
= best_sym_addr
;
1517 /* Find the source file and line number for a given PC value and SECTION.
1518 Return a structure containing a symtab pointer, a line number,
1519 and a pc range for the entire source line.
1520 The value's .pc field is NOT the specified pc.
1521 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1522 use the line that ends there. Otherwise, in that case, the line
1523 that begins there is used. */
1525 /* The big complication here is that a line may start in one file, and end just
1526 before the start of another file. This usually occurs when you #include
1527 code in the middle of a subroutine. To properly find the end of a line's PC
1528 range, we must search all symtabs associated with this compilation unit, and
1529 find the one whose first PC is closer than that of the next line in this
1532 /* If it's worth the effort, we could be using a binary search. */
1534 struct symtab_and_line
1535 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1538 register struct linetable
*l
;
1541 register struct linetable_entry
*item
;
1542 struct symtab_and_line val
;
1543 struct blockvector
*bv
;
1544 struct minimal_symbol
*msymbol
;
1545 struct minimal_symbol
*mfunsym
;
1547 /* Info on best line seen so far, and where it starts, and its file. */
1549 struct linetable_entry
*best
= NULL
;
1550 CORE_ADDR best_end
= 0;
1551 struct symtab
*best_symtab
= 0;
1553 /* Store here the first line number
1554 of a file which contains the line at the smallest pc after PC.
1555 If we don't find a line whose range contains PC,
1556 we will use a line one less than this,
1557 with a range from the start of that file to the first line's pc. */
1558 struct linetable_entry
*alt
= NULL
;
1559 struct symtab
*alt_symtab
= 0;
1561 /* Info on best line seen in this file. */
1563 struct linetable_entry
*prev
;
1565 /* If this pc is not from the current frame,
1566 it is the address of the end of a call instruction.
1567 Quite likely that is the start of the following statement.
1568 But what we want is the statement containing the instruction.
1569 Fudge the pc to make sure we get that. */
1571 INIT_SAL (&val
); /* initialize to zeroes */
1576 /* elz: added this because this function returned the wrong
1577 information if the pc belongs to a stub (import/export)
1578 to call a shlib function. This stub would be anywhere between
1579 two functions in the target, and the line info was erroneously
1580 taken to be the one of the line before the pc.
1582 /* RT: Further explanation:
1584 * We have stubs (trampolines) inserted between procedures.
1586 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1587 * exists in the main image.
1589 * In the minimal symbol table, we have a bunch of symbols
1590 * sorted by start address. The stubs are marked as "trampoline",
1591 * the others appear as text. E.g.:
1593 * Minimal symbol table for main image
1594 * main: code for main (text symbol)
1595 * shr1: stub (trampoline symbol)
1596 * foo: code for foo (text symbol)
1598 * Minimal symbol table for "shr1" image:
1600 * shr1: code for shr1 (text symbol)
1603 * So the code below is trying to detect if we are in the stub
1604 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1605 * and if found, do the symbolization from the real-code address
1606 * rather than the stub address.
1608 * Assumptions being made about the minimal symbol table:
1609 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1610 * if we're really in the trampoline. If we're beyond it (say
1611 * we're in "foo" in the above example), it'll have a closer
1612 * symbol (the "foo" text symbol for example) and will not
1613 * return the trampoline.
1614 * 2. lookup_minimal_symbol_text() will find a real text symbol
1615 * corresponding to the trampoline, and whose address will
1616 * be different than the trampoline address. I put in a sanity
1617 * check for the address being the same, to avoid an
1618 * infinite recursion.
1620 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1621 if (msymbol
!= NULL
)
1622 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1624 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1625 if (mfunsym
== NULL
)
1626 /* I eliminated this warning since it is coming out
1627 * in the following situation:
1628 * gdb shmain // test program with shared libraries
1629 * (gdb) break shr1 // function in shared lib
1630 * Warning: In stub for ...
1631 * In the above situation, the shared lib is not loaded yet,
1632 * so of course we can't find the real func/line info,
1633 * but the "break" still works, and the warning is annoying.
1634 * So I commented out the warning. RT */
1635 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1637 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1638 /* Avoid infinite recursion */
1639 /* See above comment about why warning is commented out */
1640 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1643 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1647 s
= find_pc_sect_symtab (pc
, section
);
1650 /* if no symbol information, return previous pc */
1657 bv
= BLOCKVECTOR (s
);
1659 /* Look at all the symtabs that share this blockvector.
1660 They all have the same apriori range, that we found was right;
1661 but they have different line tables. */
1663 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1665 /* Find the best line in this symtab. */
1672 /* I think len can be zero if the symtab lacks line numbers
1673 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1674 I'm not sure which, and maybe it depends on the symbol
1680 item
= l
->item
; /* Get first line info */
1682 /* Is this file's first line closer than the first lines of other files?
1683 If so, record this file, and its first line, as best alternate. */
1684 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1690 for (i
= 0; i
< len
; i
++, item
++)
1692 /* Leave prev pointing to the linetable entry for the last line
1693 that started at or before PC. */
1700 /* At this point, prev points at the line whose start addr is <= pc, and
1701 item points at the next line. If we ran off the end of the linetable
1702 (pc >= start of the last line), then prev == item. If pc < start of
1703 the first line, prev will not be set. */
1705 /* Is this file's best line closer than the best in the other files?
1706 If so, record this file, and its best line, as best so far. */
1708 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1713 /* Discard BEST_END if it's before the PC of the current BEST. */
1714 if (best_end
<= best
->pc
)
1718 /* If another line (denoted by ITEM) is in the linetable and its
1719 PC is after BEST's PC, but before the current BEST_END, then
1720 use ITEM's PC as the new best_end. */
1721 if (best
&& i
< len
&& item
->pc
> best
->pc
1722 && (best_end
== 0 || best_end
> item
->pc
))
1723 best_end
= item
->pc
;
1729 { /* If we didn't find any line # info, just
1735 val
.symtab
= alt_symtab
;
1736 val
.line
= alt
->line
- 1;
1738 /* Don't return line 0, that means that we didn't find the line. */
1742 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1748 val
.symtab
= best_symtab
;
1749 val
.line
= best
->line
;
1751 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1756 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1758 val
.section
= section
;
1762 /* Backward compatibility (no section) */
1764 struct symtab_and_line
1765 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1769 section
= find_pc_overlay (pc
);
1770 if (pc_in_unmapped_range (pc
, section
))
1771 pc
= overlay_mapped_address (pc
, section
);
1772 return find_pc_sect_line (pc
, section
, notcurrent
);
1775 /* Find line number LINE in any symtab whose name is the same as
1778 If found, return the symtab that contains the linetable in which it was
1779 found, set *INDEX to the index in the linetable of the best entry
1780 found, and set *EXACT_MATCH nonzero if the value returned is an
1783 If not found, return NULL. */
1786 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1790 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1794 struct linetable
*best_linetable
;
1795 struct symtab
*best_symtab
;
1797 /* First try looking it up in the given symtab. */
1798 best_linetable
= LINETABLE (symtab
);
1799 best_symtab
= symtab
;
1800 best_index
= find_line_common (best_linetable
, line
, &exact
);
1801 if (best_index
< 0 || !exact
)
1803 /* Didn't find an exact match. So we better keep looking for
1804 another symtab with the same name. In the case of xcoff,
1805 multiple csects for one source file (produced by IBM's FORTRAN
1806 compiler) produce multiple symtabs (this is unavoidable
1807 assuming csects can be at arbitrary places in memory and that
1808 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1810 /* BEST is the smallest linenumber > LINE so far seen,
1811 or 0 if none has been seen so far.
1812 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1815 struct objfile
*objfile
;
1818 if (best_index
>= 0)
1819 best
= best_linetable
->item
[best_index
].line
;
1823 ALL_SYMTABS (objfile
, s
)
1825 struct linetable
*l
;
1828 if (!STREQ (symtab
->filename
, s
->filename
))
1831 ind
= find_line_common (l
, line
, &exact
);
1841 if (best
== 0 || l
->item
[ind
].line
< best
)
1843 best
= l
->item
[ind
].line
;
1856 *index
= best_index
;
1858 *exact_match
= exact
;
1863 /* Set the PC value for a given source file and line number and return true.
1864 Returns zero for invalid line number (and sets the PC to 0).
1865 The source file is specified with a struct symtab. */
1868 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
1870 struct linetable
*l
;
1877 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1880 l
= LINETABLE (symtab
);
1881 *pc
= l
->item
[ind
].pc
;
1888 /* Find the range of pc values in a line.
1889 Store the starting pc of the line into *STARTPTR
1890 and the ending pc (start of next line) into *ENDPTR.
1891 Returns 1 to indicate success.
1892 Returns 0 if could not find the specified line. */
1895 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
1898 CORE_ADDR startaddr
;
1899 struct symtab_and_line found_sal
;
1902 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1905 /* This whole function is based on address. For example, if line 10 has
1906 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1907 "info line *0x123" should say the line goes from 0x100 to 0x200
1908 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1909 This also insures that we never give a range like "starts at 0x134
1910 and ends at 0x12c". */
1912 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1913 if (found_sal
.line
!= sal
.line
)
1915 /* The specified line (sal) has zero bytes. */
1916 *startptr
= found_sal
.pc
;
1917 *endptr
= found_sal
.pc
;
1921 *startptr
= found_sal
.pc
;
1922 *endptr
= found_sal
.end
;
1927 /* Given a line table and a line number, return the index into the line
1928 table for the pc of the nearest line whose number is >= the specified one.
1929 Return -1 if none is found. The value is >= 0 if it is an index.
1931 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
1934 find_line_common (register struct linetable
*l
, register int lineno
,
1940 /* BEST is the smallest linenumber > LINENO so far seen,
1941 or 0 if none has been seen so far.
1942 BEST_INDEX identifies the item for it. */
1944 int best_index
= -1;
1953 for (i
= 0; i
< len
; i
++)
1955 register struct linetable_entry
*item
= &(l
->item
[i
]);
1957 if (item
->line
== lineno
)
1959 /* Return the first (lowest address) entry which matches. */
1964 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
1971 /* If we got here, we didn't get an exact match. */
1978 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
1980 struct symtab_and_line sal
;
1981 sal
= find_pc_line (pc
, 0);
1984 return sal
.symtab
!= 0;
1987 /* Given a function symbol SYM, find the symtab and line for the start
1989 If the argument FUNFIRSTLINE is nonzero, we want the first line
1990 of real code inside the function. */
1992 struct symtab_and_line
1993 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
1996 struct symtab_and_line sal
;
1998 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1999 fixup_symbol_section (sym
, NULL
);
2001 { /* skip "first line" of function (which is actually its prologue) */
2002 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2003 /* If function is in an unmapped overlay, use its unmapped LMA
2004 address, so that SKIP_PROLOGUE has something unique to work on */
2005 if (section_is_overlay (section
) &&
2006 !section_is_mapped (section
))
2007 pc
= overlay_unmapped_address (pc
, section
);
2009 pc
+= FUNCTION_START_OFFSET
;
2010 pc
= SKIP_PROLOGUE (pc
);
2012 /* For overlays, map pc back into its mapped VMA range */
2013 pc
= overlay_mapped_address (pc
, section
);
2015 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2017 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2018 /* Convex: no need to suppress code on first line, if any */
2021 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2022 line is still part of the same function. */
2024 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2025 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2027 /* First pc of next line */
2029 /* Recalculate the line number (might not be N+1). */
2030 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2038 /* If P is of the form "operator[ \t]+..." where `...' is
2039 some legitimate operator text, return a pointer to the
2040 beginning of the substring of the operator text.
2041 Otherwise, return "". */
2043 operator_chars (char *p
, char **end
)
2046 if (strncmp (p
, "operator", 8))
2050 /* Don't get faked out by `operator' being part of a longer
2052 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2055 /* Allow some whitespace between `operator' and the operator symbol. */
2056 while (*p
== ' ' || *p
== '\t')
2059 /* Recognize 'operator TYPENAME'. */
2061 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2063 register char *q
= p
+ 1;
2064 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2073 case '\\': /* regexp quoting */
2076 if (p
[2] == '=') /* 'operator\*=' */
2078 else /* 'operator\*' */
2082 else if (p
[1] == '[')
2085 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2086 else if (p
[2] == '\\' && p
[3] == ']')
2088 *end
= p
+ 4; /* 'operator\[\]' */
2092 error ("nothing is allowed between '[' and ']'");
2096 /* Gratuitous qoute: skip it and move on. */
2118 if (p
[0] == '-' && p
[1] == '>')
2120 /* Struct pointer member operator 'operator->'. */
2123 *end
= p
+ 3; /* 'operator->*' */
2126 else if (p
[2] == '\\')
2128 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2133 *end
= p
+ 2; /* 'operator->' */
2137 if (p
[1] == '=' || p
[1] == p
[0])
2148 error ("`operator ()' must be specified without whitespace in `()'");
2153 error ("`operator ?:' must be specified without whitespace in `?:'");
2158 error ("`operator []' must be specified without whitespace in `[]'");
2162 error ("`operator %s' not supported", p
);
2171 /* If FILE is not already in the table of files, return zero;
2172 otherwise return non-zero. Optionally add FILE to the table if ADD
2173 is non-zero. If *FIRST is non-zero, forget the old table
2176 filename_seen (const char *file
, int add
, int *first
)
2178 /* Table of files seen so far. */
2179 static const char **tab
= NULL
;
2180 /* Allocated size of tab in elements.
2181 Start with one 256-byte block (when using GNU malloc.c).
2182 24 is the malloc overhead when range checking is in effect. */
2183 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2184 /* Current size of tab in elements. */
2185 static int tab_cur_size
;
2191 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2195 /* Is FILE in tab? */
2196 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2197 if (strcmp (*p
, file
) == 0)
2200 /* No; maybe add it to tab. */
2203 if (tab_cur_size
== tab_alloc_size
)
2205 tab_alloc_size
*= 2;
2206 tab
= (const char **) xrealloc ((char *) tab
,
2207 tab_alloc_size
* sizeof (*tab
));
2209 tab
[tab_cur_size
++] = file
;
2215 /* Slave routine for sources_info. Force line breaks at ,'s.
2216 NAME is the name to print and *FIRST is nonzero if this is the first
2217 name printed. Set *FIRST to zero. */
2219 output_source_filename (char *name
, int *first
)
2221 /* Since a single source file can result in several partial symbol
2222 tables, we need to avoid printing it more than once. Note: if
2223 some of the psymtabs are read in and some are not, it gets
2224 printed both under "Source files for which symbols have been
2225 read" and "Source files for which symbols will be read in on
2226 demand". I consider this a reasonable way to deal with the
2227 situation. I'm not sure whether this can also happen for
2228 symtabs; it doesn't hurt to check. */
2230 /* Was NAME already seen? */
2231 if (filename_seen (name
, 1, first
))
2233 /* Yes; don't print it again. */
2236 /* No; print it and reset *FIRST. */
2243 printf_filtered (", ");
2247 fputs_filtered (name
, gdb_stdout
);
2251 sources_info (char *ignore
, int from_tty
)
2253 register struct symtab
*s
;
2254 register struct partial_symtab
*ps
;
2255 register struct objfile
*objfile
;
2258 if (!have_full_symbols () && !have_partial_symbols ())
2260 error ("No symbol table is loaded. Use the \"file\" command.");
2263 printf_filtered ("Source files for which symbols have been read in:\n\n");
2266 ALL_SYMTABS (objfile
, s
)
2268 output_source_filename (s
->filename
, &first
);
2270 printf_filtered ("\n\n");
2272 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2275 ALL_PSYMTABS (objfile
, ps
)
2279 output_source_filename (ps
->filename
, &first
);
2282 printf_filtered ("\n");
2286 file_matches (char *file
, char *files
[], int nfiles
)
2290 if (file
!= NULL
&& nfiles
!= 0)
2292 for (i
= 0; i
< nfiles
; i
++)
2294 if (strcmp (files
[i
], lbasename (file
)) == 0)
2298 else if (nfiles
== 0)
2303 /* Free any memory associated with a search. */
2305 free_search_symbols (struct symbol_search
*symbols
)
2307 struct symbol_search
*p
;
2308 struct symbol_search
*next
;
2310 for (p
= symbols
; p
!= NULL
; p
= next
)
2318 do_free_search_symbols_cleanup (void *symbols
)
2320 free_search_symbols (symbols
);
2324 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2326 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2330 /* Search the symbol table for matches to the regular expression REGEXP,
2331 returning the results in *MATCHES.
2333 Only symbols of KIND are searched:
2334 FUNCTIONS_NAMESPACE - search all functions
2335 TYPES_NAMESPACE - search all type names
2336 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2337 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2338 and constants (enums)
2340 free_search_symbols should be called when *MATCHES is no longer needed.
2343 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2344 struct symbol_search
**matches
)
2346 register struct symtab
*s
;
2347 register struct partial_symtab
*ps
;
2348 register struct blockvector
*bv
;
2349 struct blockvector
*prev_bv
= 0;
2350 register struct block
*b
;
2353 register struct symbol
*sym
;
2354 struct partial_symbol
**psym
;
2355 struct objfile
*objfile
;
2356 struct minimal_symbol
*msymbol
;
2359 static enum minimal_symbol_type types
[]
2361 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2362 static enum minimal_symbol_type types2
[]
2364 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2365 static enum minimal_symbol_type types3
[]
2367 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2368 static enum minimal_symbol_type types4
[]
2370 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2371 enum minimal_symbol_type ourtype
;
2372 enum minimal_symbol_type ourtype2
;
2373 enum minimal_symbol_type ourtype3
;
2374 enum minimal_symbol_type ourtype4
;
2375 struct symbol_search
*sr
;
2376 struct symbol_search
*psr
;
2377 struct symbol_search
*tail
;
2378 struct cleanup
*old_chain
= NULL
;
2380 if (kind
< VARIABLES_NAMESPACE
)
2381 error ("must search on specific namespace");
2383 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2384 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2385 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2386 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2388 sr
= *matches
= NULL
;
2393 /* Make sure spacing is right for C++ operators.
2394 This is just a courtesy to make the matching less sensitive
2395 to how many spaces the user leaves between 'operator'
2396 and <TYPENAME> or <OPERATOR>. */
2398 char *opname
= operator_chars (regexp
, &opend
);
2401 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2402 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2404 /* There should 1 space between 'operator' and 'TYPENAME'. */
2405 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2410 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2411 if (opname
[-1] == ' ')
2414 /* If wrong number of spaces, fix it. */
2417 char *tmp
= (char *) alloca (strlen (regexp
) + fix
);
2418 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2423 if (0 != (val
= re_comp (regexp
)))
2424 error ("Invalid regexp (%s): %s", val
, regexp
);
2427 /* Search through the partial symtabs *first* for all symbols
2428 matching the regexp. That way we don't have to reproduce all of
2429 the machinery below. */
2431 ALL_PSYMTABS (objfile
, ps
)
2433 struct partial_symbol
**bound
, **gbound
, **sbound
;
2439 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2440 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2443 /* Go through all of the symbols stored in a partial
2444 symtab in one loop. */
2445 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2450 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2452 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2463 /* If it would match (logic taken from loop below)
2464 load the file and go on to the next one */
2465 if (file_matches (ps
->filename
, files
, nfiles
)
2466 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2467 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2468 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2469 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2470 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2471 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2473 PSYMTAB_TO_SYMTAB (ps
);
2481 /* Here, we search through the minimal symbol tables for functions
2482 and variables that match, and force their symbols to be read.
2483 This is in particular necessary for demangled variable names,
2484 which are no longer put into the partial symbol tables.
2485 The symbol will then be found during the scan of symtabs below.
2487 For functions, find_pc_symtab should succeed if we have debug info
2488 for the function, for variables we have to call lookup_symbol
2489 to determine if the variable has debug info.
2490 If the lookup fails, set found_misc so that we will rescan to print
2491 any matching symbols without debug info.
2494 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2496 ALL_MSYMBOLS (objfile
, msymbol
)
2498 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2499 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2500 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2501 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2503 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2505 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2507 if (kind
== FUNCTIONS_NAMESPACE
2508 || lookup_symbol (SYMBOL_NAME (msymbol
),
2509 (struct block
*) NULL
,
2511 0, (struct symtab
**) NULL
) == NULL
)
2519 ALL_SYMTABS (objfile
, s
)
2521 bv
= BLOCKVECTOR (s
);
2522 /* Often many files share a blockvector.
2523 Scan each blockvector only once so that
2524 we don't get every symbol many times.
2525 It happens that the first symtab in the list
2526 for any given blockvector is the main file. */
2528 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2530 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2531 /* Skip the sort if this block is always sorted. */
2532 if (!BLOCK_SHOULD_SORT (b
))
2533 sort_block_syms (b
);
2534 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
2537 sym
= BLOCK_SYM (b
, j
);
2538 if (file_matches (s
->filename
, files
, nfiles
)
2539 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2540 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2541 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2542 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2543 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2544 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2545 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2548 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2552 psr
->msymbol
= NULL
;
2557 old_chain
= make_cleanup_free_search_symbols (sr
);
2568 /* If there are no eyes, avoid all contact. I mean, if there are
2569 no debug symbols, then print directly from the msymbol_vector. */
2571 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2573 ALL_MSYMBOLS (objfile
, msymbol
)
2575 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2576 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2577 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2578 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2580 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2582 /* Functions: Look up by address. */
2583 if (kind
!= FUNCTIONS_NAMESPACE
||
2584 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2586 /* Variables/Absolutes: Look up by name */
2587 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2588 (struct block
*) NULL
, VAR_NAMESPACE
,
2589 0, (struct symtab
**) NULL
) == NULL
)
2592 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2594 psr
->msymbol
= msymbol
;
2601 old_chain
= make_cleanup_free_search_symbols (sr
);
2615 discard_cleanups (old_chain
);
2618 /* Helper function for symtab_symbol_info, this function uses
2619 the data returned from search_symbols() to print information
2620 regarding the match to gdb_stdout.
2623 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
2624 int block
, char *last
)
2626 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
2628 fputs_filtered ("\nFile ", gdb_stdout
);
2629 fputs_filtered (s
->filename
, gdb_stdout
);
2630 fputs_filtered (":\n", gdb_stdout
);
2633 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
2634 printf_filtered ("static ");
2636 /* Typedef that is not a C++ class */
2637 if (kind
== TYPES_NAMESPACE
2638 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
2639 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
2640 /* variable, func, or typedef-that-is-c++-class */
2641 else if (kind
< TYPES_NAMESPACE
||
2642 (kind
== TYPES_NAMESPACE
&&
2643 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
2645 type_print (SYMBOL_TYPE (sym
),
2646 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
2647 ? "" : SYMBOL_SOURCE_NAME (sym
)),
2650 printf_filtered (";\n");
2655 /* Tiemann says: "info methods was never implemented." */
2656 char *demangled_name
;
2657 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
2659 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
2661 if (TYPE_FN_FIELD_STUB (t
, block
))
2662 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
2664 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
2665 DMGL_ANSI
| DMGL_PARAMS
);
2666 if (demangled_name
== NULL
)
2667 fprintf_filtered (stream
, "<badly mangled name %s>",
2668 TYPE_FN_FIELD_PHYSNAME (t
, block
));
2671 fputs_filtered (demangled_name
, stream
);
2672 xfree (demangled_name
);
2678 /* This help function for symtab_symbol_info() prints information
2679 for non-debugging symbols to gdb_stdout.
2682 print_msymbol_info (struct minimal_symbol
*msymbol
)
2686 if (TARGET_ADDR_BIT
<= 32)
2687 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
2688 & (CORE_ADDR
) 0xffffffff,
2691 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
2693 printf_filtered ("%s %s\n",
2694 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
2697 /* This is the guts of the commands "info functions", "info types", and
2698 "info variables". It calls search_symbols to find all matches and then
2699 print_[m]symbol_info to print out some useful information about the
2703 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
2705 static char *classnames
[]
2707 {"variable", "function", "type", "method"};
2708 struct symbol_search
*symbols
;
2709 struct symbol_search
*p
;
2710 struct cleanup
*old_chain
;
2711 char *last_filename
= NULL
;
2714 /* must make sure that if we're interrupted, symbols gets freed */
2715 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
2716 old_chain
= make_cleanup_free_search_symbols (symbols
);
2718 printf_filtered (regexp
2719 ? "All %ss matching regular expression \"%s\":\n"
2720 : "All defined %ss:\n",
2721 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
2723 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
2727 if (p
->msymbol
!= NULL
)
2731 printf_filtered ("\nNon-debugging symbols:\n");
2734 print_msymbol_info (p
->msymbol
);
2738 print_symbol_info (kind
,
2743 last_filename
= p
->symtab
->filename
;
2747 do_cleanups (old_chain
);
2751 variables_info (char *regexp
, int from_tty
)
2753 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
2757 functions_info (char *regexp
, int from_tty
)
2759 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
2764 types_info (char *regexp
, int from_tty
)
2766 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
2770 /* Tiemann says: "info methods was never implemented." */
2772 methods_info (char *regexp
)
2774 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
2778 /* Breakpoint all functions matching regular expression. */
2781 rbreak_command_wrapper (char *regexp
, int from_tty
)
2783 rbreak_command (regexp
, from_tty
);
2787 rbreak_command (char *regexp
, int from_tty
)
2789 struct symbol_search
*ss
;
2790 struct symbol_search
*p
;
2791 struct cleanup
*old_chain
;
2793 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
2794 old_chain
= make_cleanup_free_search_symbols (ss
);
2796 for (p
= ss
; p
!= NULL
; p
= p
->next
)
2798 if (p
->msymbol
== NULL
)
2800 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
2801 + strlen (SYMBOL_NAME (p
->symbol
))
2803 strcpy (string
, p
->symtab
->filename
);
2804 strcat (string
, ":'");
2805 strcat (string
, SYMBOL_NAME (p
->symbol
));
2806 strcat (string
, "'");
2807 break_command (string
, from_tty
);
2808 print_symbol_info (FUNCTIONS_NAMESPACE
,
2812 p
->symtab
->filename
);
2816 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
2817 printf_filtered ("<function, no debug info> %s;\n",
2818 SYMBOL_SOURCE_NAME (p
->msymbol
));
2822 do_cleanups (old_chain
);
2826 /* Return Nonzero if block a is lexically nested within block b,
2827 or if a and b have the same pc range.
2828 Return zero otherwise. */
2830 contained_in (struct block
*a
, struct block
*b
)
2834 return BLOCK_START (a
) >= BLOCK_START (b
)
2835 && BLOCK_END (a
) <= BLOCK_END (b
);
2839 /* Helper routine for make_symbol_completion_list. */
2841 static int return_val_size
;
2842 static int return_val_index
;
2843 static char **return_val
;
2845 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
2847 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
2848 /* Put only the mangled name on the list. */ \
2849 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
2850 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
2851 completion_list_add_name \
2852 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
2854 completion_list_add_name \
2855 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
2858 /* Test to see if the symbol specified by SYMNAME (which is already
2859 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
2860 characters. If so, add it to the current completion list. */
2863 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
2864 char *text
, char *word
)
2869 /* clip symbols that cannot match */
2871 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
2876 /* We have a match for a completion, so add SYMNAME to the current list
2877 of matches. Note that the name is moved to freshly malloc'd space. */
2881 if (word
== sym_text
)
2883 new = xmalloc (strlen (symname
) + 5);
2884 strcpy (new, symname
);
2886 else if (word
> sym_text
)
2888 /* Return some portion of symname. */
2889 new = xmalloc (strlen (symname
) + 5);
2890 strcpy (new, symname
+ (word
- sym_text
));
2894 /* Return some of SYM_TEXT plus symname. */
2895 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
2896 strncpy (new, word
, sym_text
- word
);
2897 new[sym_text
- word
] = '\0';
2898 strcat (new, symname
);
2901 if (return_val_index
+ 3 > return_val_size
)
2903 newsize
= (return_val_size
*= 2) * sizeof (char *);
2904 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
2906 return_val
[return_val_index
++] = new;
2907 return_val
[return_val_index
] = NULL
;
2911 /* Return a NULL terminated array of all symbols (regardless of class)
2912 which begin by matching TEXT. If the answer is no symbols, then
2913 the return value is an array which contains only a NULL pointer.
2915 Problem: All of the symbols have to be copied because readline frees them.
2916 I'm not going to worry about this; hopefully there won't be that many. */
2919 make_symbol_completion_list (char *text
, char *word
)
2921 register struct symbol
*sym
;
2922 register struct symtab
*s
;
2923 register struct partial_symtab
*ps
;
2924 register struct minimal_symbol
*msymbol
;
2925 register struct objfile
*objfile
;
2926 register struct block
*b
, *surrounding_static_block
= 0;
2928 struct partial_symbol
**psym
;
2929 /* The symbol we are completing on. Points in same buffer as text. */
2931 /* Length of sym_text. */
2934 /* Now look for the symbol we are supposed to complete on.
2935 FIXME: This should be language-specific. */
2939 char *quote_pos
= NULL
;
2941 /* First see if this is a quoted string. */
2943 for (p
= text
; *p
!= '\0'; ++p
)
2945 if (quote_found
!= '\0')
2947 if (*p
== quote_found
)
2948 /* Found close quote. */
2950 else if (*p
== '\\' && p
[1] == quote_found
)
2951 /* A backslash followed by the quote character
2952 doesn't end the string. */
2955 else if (*p
== '\'' || *p
== '"')
2961 if (quote_found
== '\'')
2962 /* A string within single quotes can be a symbol, so complete on it. */
2963 sym_text
= quote_pos
+ 1;
2964 else if (quote_found
== '"')
2965 /* A double-quoted string is never a symbol, nor does it make sense
2966 to complete it any other way. */
2968 return_val
= (char **) xmalloc (sizeof (char *));
2969 return_val
[0] = NULL
;
2974 /* It is not a quoted string. Break it based on the characters
2975 which are in symbols. */
2978 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
2987 sym_text_len
= strlen (sym_text
);
2989 return_val_size
= 100;
2990 return_val_index
= 0;
2991 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
2992 return_val
[0] = NULL
;
2994 /* Look through the partial symtabs for all symbols which begin
2995 by matching SYM_TEXT. Add each one that you find to the list. */
2997 ALL_PSYMTABS (objfile
, ps
)
2999 /* If the psymtab's been read in we'll get it when we search
3000 through the blockvector. */
3004 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3005 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3006 + ps
->n_global_syms
);
3009 /* If interrupted, then quit. */
3011 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3014 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3015 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3016 + ps
->n_static_syms
);
3020 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3024 /* At this point scan through the misc symbol vectors and add each
3025 symbol you find to the list. Eventually we want to ignore
3026 anything that isn't a text symbol (everything else will be
3027 handled by the psymtab code above). */
3029 ALL_MSYMBOLS (objfile
, msymbol
)
3032 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3035 /* Search upwards from currently selected frame (so that we can
3036 complete on local vars. */
3038 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3040 if (!BLOCK_SUPERBLOCK (b
))
3042 surrounding_static_block
= b
; /* For elmin of dups */
3045 /* Also catch fields of types defined in this places which match our
3046 text string. Only complete on types visible from current context. */
3048 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3050 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3051 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3053 struct type
*t
= SYMBOL_TYPE (sym
);
3054 enum type_code c
= TYPE_CODE (t
);
3056 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3058 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3060 if (TYPE_FIELD_NAME (t
, j
))
3062 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3063 sym_text
, sym_text_len
, text
, word
);
3071 /* Go through the symtabs and check the externs and statics for
3072 symbols which match. */
3074 ALL_SYMTABS (objfile
, s
)
3077 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3078 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3080 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3084 ALL_SYMTABS (objfile
, s
)
3087 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3088 /* Don't do this block twice. */
3089 if (b
== surrounding_static_block
)
3091 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3093 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3097 return (return_val
);
3100 /* Like make_symbol_completion_list, but returns a list of symbols
3101 defined in a source file FILE. */
3104 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3106 register struct symbol
*sym
;
3107 register struct symtab
*s
;
3108 register struct block
*b
;
3110 /* The symbol we are completing on. Points in same buffer as text. */
3112 /* Length of sym_text. */
3115 /* Now look for the symbol we are supposed to complete on.
3116 FIXME: This should be language-specific. */
3120 char *quote_pos
= NULL
;
3122 /* First see if this is a quoted string. */
3124 for (p
= text
; *p
!= '\0'; ++p
)
3126 if (quote_found
!= '\0')
3128 if (*p
== quote_found
)
3129 /* Found close quote. */
3131 else if (*p
== '\\' && p
[1] == quote_found
)
3132 /* A backslash followed by the quote character
3133 doesn't end the string. */
3136 else if (*p
== '\'' || *p
== '"')
3142 if (quote_found
== '\'')
3143 /* A string within single quotes can be a symbol, so complete on it. */
3144 sym_text
= quote_pos
+ 1;
3145 else if (quote_found
== '"')
3146 /* A double-quoted string is never a symbol, nor does it make sense
3147 to complete it any other way. */
3149 return_val
= (char **) xmalloc (sizeof (char *));
3150 return_val
[0] = NULL
;
3155 /* It is not a quoted string. Break it based on the characters
3156 which are in symbols. */
3159 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3168 sym_text_len
= strlen (sym_text
);
3170 return_val_size
= 10;
3171 return_val_index
= 0;
3172 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3173 return_val
[0] = NULL
;
3175 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3177 s
= lookup_symtab (srcfile
);
3180 /* Maybe they typed the file with leading directories, while the
3181 symbol tables record only its basename. */
3182 const char *tail
= lbasename (srcfile
);
3185 s
= lookup_symtab (tail
);
3188 /* If we have no symtab for that file, return an empty list. */
3190 return (return_val
);
3192 /* Go through this symtab and check the externs and statics for
3193 symbols which match. */
3195 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3196 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3198 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3201 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3202 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3204 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3207 return (return_val
);
3210 /* A helper function for make_source_files_completion_list. It adds
3211 another file name to a list of possible completions, growing the
3212 list as necessary. */
3215 add_filename_to_list (const char *fname
, char *text
, char *word
,
3216 char ***list
, int *list_used
, int *list_alloced
)
3219 size_t fnlen
= strlen (fname
);
3221 if (*list_used
+ 1 >= *list_alloced
)
3224 *list
= (char **) xrealloc ((char *) *list
,
3225 *list_alloced
* sizeof (char *));
3230 /* Return exactly fname. */
3231 new = xmalloc (fnlen
+ 5);
3232 strcpy (new, fname
);
3234 else if (word
> text
)
3236 /* Return some portion of fname. */
3237 new = xmalloc (fnlen
+ 5);
3238 strcpy (new, fname
+ (word
- text
));
3242 /* Return some of TEXT plus fname. */
3243 new = xmalloc (fnlen
+ (text
- word
) + 5);
3244 strncpy (new, word
, text
- word
);
3245 new[text
- word
] = '\0';
3246 strcat (new, fname
);
3248 (*list
)[*list_used
] = new;
3249 (*list
)[++*list_used
] = NULL
;
3253 not_interesting_fname (const char *fname
)
3255 static const char *illegal_aliens
[] = {
3256 "_globals_", /* inserted by coff_symtab_read */
3261 for (i
= 0; illegal_aliens
[i
]; i
++)
3263 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3269 /* Return a NULL terminated array of all source files whose names
3270 begin with matching TEXT. The file names are looked up in the
3271 symbol tables of this program. If the answer is no matchess, then
3272 the return value is an array which contains only a NULL pointer. */
3275 make_source_files_completion_list (char *text
, char *word
)
3277 register struct symtab
*s
;
3278 register struct partial_symtab
*ps
;
3279 register struct objfile
*objfile
;
3281 int list_alloced
= 1;
3283 size_t text_len
= strlen (text
);
3284 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3285 const char *base_name
;
3289 if (!have_full_symbols () && !have_partial_symbols ())
3292 ALL_SYMTABS (objfile
, s
)
3294 if (not_interesting_fname (s
->filename
))
3296 if (!filename_seen (s
->filename
, 1, &first
)
3297 #if HAVE_DOS_BASED_FILE_SYSTEM
3298 && strncasecmp (s
->filename
, text
, text_len
) == 0
3300 && strncmp (s
->filename
, text
, text_len
) == 0
3304 /* This file matches for a completion; add it to the current
3306 add_filename_to_list (s
->filename
, text
, word
,
3307 &list
, &list_used
, &list_alloced
);
3311 /* NOTE: We allow the user to type a base name when the
3312 debug info records leading directories, but not the other
3313 way around. This is what subroutines of breakpoint
3314 command do when they parse file names. */
3315 base_name
= lbasename (s
->filename
);
3316 if (base_name
!= s
->filename
3317 && !filename_seen (base_name
, 1, &first
)
3318 #if HAVE_DOS_BASED_FILE_SYSTEM
3319 && strncasecmp (base_name
, text
, text_len
) == 0
3321 && strncmp (base_name
, text
, text_len
) == 0
3324 add_filename_to_list (base_name
, text
, word
,
3325 &list
, &list_used
, &list_alloced
);
3329 ALL_PSYMTABS (objfile
, ps
)
3331 if (not_interesting_fname (ps
->filename
))
3335 if (!filename_seen (ps
->filename
, 1, &first
)
3336 #if HAVE_DOS_BASED_FILE_SYSTEM
3337 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3339 && strncmp (ps
->filename
, text
, text_len
) == 0
3343 /* This file matches for a completion; add it to the
3344 current list of matches. */
3345 add_filename_to_list (ps
->filename
, text
, word
,
3346 &list
, &list_used
, &list_alloced
);
3351 base_name
= lbasename (ps
->filename
);
3352 if (base_name
!= ps
->filename
3353 && !filename_seen (base_name
, 1, &first
)
3354 #if HAVE_DOS_BASED_FILE_SYSTEM
3355 && strncasecmp (base_name
, text
, text_len
) == 0
3357 && strncmp (base_name
, text
, text_len
) == 0
3360 add_filename_to_list (base_name
, text
, word
,
3361 &list
, &list_used
, &list_alloced
);
3369 /* Determine if PC is in the prologue of a function. The prologue is the area
3370 between the first instruction of a function, and the first executable line.
3371 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3373 If non-zero, func_start is where we think the prologue starts, possibly
3374 by previous examination of symbol table information.
3378 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3380 struct symtab_and_line sal
;
3381 CORE_ADDR func_addr
, func_end
;
3383 /* We have several sources of information we can consult to figure
3385 - Compilers usually emit line number info that marks the prologue
3386 as its own "source line". So the ending address of that "line"
3387 is the end of the prologue. If available, this is the most
3389 - The minimal symbols and partial symbols, which can usually tell
3390 us the starting and ending addresses of a function.
3391 - If we know the function's start address, we can call the
3392 architecture-defined SKIP_PROLOGUE function to analyze the
3393 instruction stream and guess where the prologue ends.
3394 - Our `func_start' argument; if non-zero, this is the caller's
3395 best guess as to the function's entry point. At the time of
3396 this writing, handle_inferior_event doesn't get this right, so
3397 it should be our last resort. */
3399 /* Consult the partial symbol table, to find which function
3401 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3403 CORE_ADDR prologue_end
;
3405 /* We don't even have minsym information, so fall back to using
3406 func_start, if given. */
3408 return 1; /* We *might* be in a prologue. */
3410 prologue_end
= SKIP_PROLOGUE (func_start
);
3412 return func_start
<= pc
&& pc
< prologue_end
;
3415 /* If we have line number information for the function, that's
3416 usually pretty reliable. */
3417 sal
= find_pc_line (func_addr
, 0);
3419 /* Now sal describes the source line at the function's entry point,
3420 which (by convention) is the prologue. The end of that "line",
3421 sal.end, is the end of the prologue.
3423 Note that, for functions whose source code is all on a single
3424 line, the line number information doesn't always end up this way.
3425 So we must verify that our purported end-of-prologue address is
3426 *within* the function, not at its start or end. */
3428 || sal
.end
<= func_addr
3429 || func_end
<= sal
.end
)
3431 /* We don't have any good line number info, so use the minsym
3432 information, together with the architecture-specific prologue
3434 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3436 return func_addr
<= pc
&& pc
< prologue_end
;
3439 /* We have line number info, and it looks good. */
3440 return func_addr
<= pc
&& pc
< sal
.end
;
3444 /* Begin overload resolution functions */
3445 /* Helper routine for make_symbol_completion_list. */
3447 static int sym_return_val_size
;
3448 static int sym_return_val_index
;
3449 static struct symbol
**sym_return_val
;
3451 /* Test to see if the symbol specified by SYMNAME (which is already
3452 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3453 characters. If so, add it to the current completion list. */
3456 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3461 /* Get the demangled name without parameters */
3462 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
3465 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
3466 strcpy (sym_name
, SYMBOL_NAME (sym
));
3469 /* skip symbols that cannot match */
3470 if (strcmp (sym_name
, oload_name
) != 0)
3476 /* If there is no type information, we can't do anything, so skip */
3477 if (SYMBOL_TYPE (sym
) == NULL
)
3480 /* skip any symbols that we've already considered. */
3481 for (i
= 0; i
< sym_return_val_index
; ++i
)
3482 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3485 /* We have a match for an overload instance, so add SYM to the current list
3486 * of overload instances */
3487 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3489 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3490 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3492 sym_return_val
[sym_return_val_index
++] = sym
;
3493 sym_return_val
[sym_return_val_index
] = NULL
;
3498 /* Return a null-terminated list of pointers to function symbols that
3499 * match name of the supplied symbol FSYM.
3500 * This is used in finding all overloaded instances of a function name.
3501 * This has been modified from make_symbol_completion_list. */
3505 make_symbol_overload_list (struct symbol
*fsym
)
3507 register struct symbol
*sym
;
3508 register struct symtab
*s
;
3509 register struct partial_symtab
*ps
;
3510 register struct objfile
*objfile
;
3511 register struct block
*b
, *surrounding_static_block
= 0;
3513 /* The name we are completing on. */
3514 char *oload_name
= NULL
;
3515 /* Length of name. */
3516 int oload_name_len
= 0;
3518 /* Look for the symbol we are supposed to complete on.
3519 * FIXME: This should be language-specific. */
3521 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
3524 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
3525 strcpy (oload_name
, SYMBOL_NAME (fsym
));
3527 oload_name_len
= strlen (oload_name
);
3529 sym_return_val_size
= 100;
3530 sym_return_val_index
= 0;
3531 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3532 sym_return_val
[0] = NULL
;
3534 /* Look through the partial symtabs for all symbols which begin
3535 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3537 ALL_PSYMTABS (objfile
, ps
)
3539 struct partial_symbol
**psym
;
3541 /* If the psymtab's been read in we'll get it when we search
3542 through the blockvector. */
3546 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3547 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3548 + ps
->n_global_syms
);
3551 /* If interrupted, then quit. */
3553 /* This will cause the symbol table to be read if it has not yet been */
3554 s
= PSYMTAB_TO_SYMTAB (ps
);
3557 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3558 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3559 + ps
->n_static_syms
);
3563 /* This will cause the symbol table to be read if it has not yet been */
3564 s
= PSYMTAB_TO_SYMTAB (ps
);
3568 /* Search upwards from currently selected frame (so that we can
3569 complete on local vars. */
3571 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3573 if (!BLOCK_SUPERBLOCK (b
))
3575 surrounding_static_block
= b
; /* For elimination of dups */
3578 /* Also catch fields of types defined in this places which match our
3579 text string. Only complete on types visible from current context. */
3581 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3583 overload_list_add_symbol (sym
, oload_name
);
3587 /* Go through the symtabs and check the externs and statics for
3588 symbols which match. */
3590 ALL_SYMTABS (objfile
, s
)
3593 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3594 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3596 overload_list_add_symbol (sym
, oload_name
);
3600 ALL_SYMTABS (objfile
, s
)
3603 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3604 /* Don't do this block twice. */
3605 if (b
== surrounding_static_block
)
3607 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3609 overload_list_add_symbol (sym
, oload_name
);
3615 return (sym_return_val
);
3618 /* End of overload resolution functions */
3620 struct symtabs_and_lines
3621 decode_line_spec (char *string
, int funfirstline
)
3623 struct symtabs_and_lines sals
;
3625 error ("Empty line specification.");
3626 sals
= decode_line_1 (&string
, funfirstline
,
3627 current_source_symtab
, current_source_line
,
3630 error ("Junk at end of line specification: %s", string
);
3635 static char *name_of_main
;
3638 set_main_name (const char *name
)
3640 if (name_of_main
!= NULL
)
3642 xfree (name_of_main
);
3643 name_of_main
= NULL
;
3647 name_of_main
= xstrdup (name
);
3654 if (name_of_main
!= NULL
)
3655 return name_of_main
;
3662 _initialize_symtab (void)
3664 add_info ("variables", variables_info
,
3665 "All global and static variable names, or those matching REGEXP.");
3667 add_com ("whereis", class_info
, variables_info
,
3668 "All global and static variable names, or those matching REGEXP.");
3670 add_info ("functions", functions_info
,
3671 "All function names, or those matching REGEXP.");
3674 /* FIXME: This command has at least the following problems:
3675 1. It prints builtin types (in a very strange and confusing fashion).
3676 2. It doesn't print right, e.g. with
3677 typedef struct foo *FOO
3678 type_print prints "FOO" when we want to make it (in this situation)
3679 print "struct foo *".
3680 I also think "ptype" or "whatis" is more likely to be useful (but if
3681 there is much disagreement "info types" can be fixed). */
3682 add_info ("types", types_info
,
3683 "All type names, or those matching REGEXP.");
3686 add_info ("methods", methods_info
,
3687 "All method names, or those matching REGEXP::REGEXP.\n\
3688 If the class qualifier is omitted, it is assumed to be the current scope.\n\
3689 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
3692 add_info ("sources", sources_info
,
3693 "Source files in the program.");
3695 add_com ("rbreak", class_breakpoint
, rbreak_command
,
3696 "Set a breakpoint for all functions matching REGEXP.");
3700 add_com ("lf", class_info
, sources_info
, "Source files in the program");
3701 add_com ("lg", class_info
, variables_info
,
3702 "All global and static variable names, or those matching REGEXP.");
3705 /* Initialize the one built-in type that isn't language dependent... */
3706 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
3707 "<unknown type>", (struct objfile
*) NULL
);