1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
42 #include "filenames.h" /* for FILENAME_CMP */
44 #include "gdb_obstack.h"
46 #include <sys/types.h>
48 #include "gdb_string.h"
53 /* Prototypes for local functions */
55 static void completion_list_add_name (char *, char *, int, char *, char *);
57 static void rbreak_command (char *, int);
59 static void types_info (char *, int);
61 static void functions_info (char *, int);
63 static void variables_info (char *, int);
65 static void sources_info (char *, int);
67 static void output_source_filename (char *, int *);
69 static int find_line_common (struct linetable
*, int, int *);
71 /* This one is used by linespec.c */
73 char *operator_chars (char *p
, char **end
);
75 static struct partial_symbol
*lookup_partial_symbol (struct partial_symtab
*,
79 static struct symbol
*lookup_symbol_aux (const char *name
,
80 const char *mangled_name
,
81 const struct block
*block
,
82 const namespace_enum
namespace,
83 int *is_a_field_of_this
,
84 struct symtab
**symtab
);
87 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
89 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
90 /* Signals the presence of objects compiled by HP compilers */
91 int hp_som_som_object_present
= 0;
93 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
95 static int file_matches (char *, char **, int);
97 static void print_symbol_info (namespace_enum
,
98 struct symtab
*, struct symbol
*, int, char *);
100 static void print_msymbol_info (struct minimal_symbol
*);
102 static void symtab_symbol_info (char *, namespace_enum
, int);
104 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
106 void _initialize_symtab (void);
110 /* The single non-language-specific builtin type */
111 struct type
*builtin_type_error
;
113 /* Block in which the most recently searched-for symbol was found.
114 Might be better to make this a parameter to lookup_symbol and
117 const struct block
*block_found
;
119 /* Check for a symtab of a specific name; first in symtabs, then in
120 psymtabs. *If* there is no '/' in the name, a match after a '/'
121 in the symtab filename will also work. */
124 lookup_symtab (const char *name
)
126 register struct symtab
*s
;
127 register struct partial_symtab
*ps
;
128 register struct objfile
*objfile
;
129 char *real_path
= NULL
;
130 char *full_path
= NULL
;
132 /* Here we are interested in canonicalizing an absolute path, not
133 absolutizing a relative path. */
134 if (IS_ABSOLUTE_PATH (name
))
136 full_path
= xfullpath (name
);
137 make_cleanup (xfree
, full_path
);
138 real_path
= gdb_realpath (name
);
139 make_cleanup (xfree
, real_path
);
144 /* First, search for an exact match */
146 ALL_SYMTABS (objfile
, s
)
148 if (FILENAME_CMP (name
, s
->filename
) == 0)
153 /* If the user gave us an absolute path, try to find the file in
154 this symtab and use its absolute path. */
156 if (full_path
!= NULL
)
158 const char *fp
= symtab_to_filename (s
);
159 if (FILENAME_CMP (full_path
, fp
) == 0)
165 if (real_path
!= NULL
)
167 char *rp
= gdb_realpath (symtab_to_filename (s
));
168 make_cleanup (xfree
, rp
);
169 if (FILENAME_CMP (real_path
, rp
) == 0)
176 /* Now, search for a matching tail (only if name doesn't have any dirs) */
178 if (lbasename (name
) == name
)
179 ALL_SYMTABS (objfile
, s
)
181 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
185 /* Same search rules as above apply here, but now we look thru the
188 ps
= lookup_partial_symtab (name
);
193 error ("Internal: readin %s pst for `%s' found when no symtab found.",
196 s
= PSYMTAB_TO_SYMTAB (ps
);
201 /* At this point, we have located the psymtab for this file, but
202 the conversion to a symtab has failed. This usually happens
203 when we are looking up an include file. In this case,
204 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
205 been created. So, we need to run through the symtabs again in
206 order to find the file.
207 XXX - This is a crock, and should be fixed inside of the the
208 symbol parsing routines. */
212 /* Lookup the partial symbol table of a source file named NAME.
213 *If* there is no '/' in the name, a match after a '/'
214 in the psymtab filename will also work. */
216 struct partial_symtab
*
217 lookup_partial_symtab (const char *name
)
219 register struct partial_symtab
*pst
;
220 register struct objfile
*objfile
;
221 char *full_path
= NULL
;
222 char *real_path
= NULL
;
224 /* Here we are interested in canonicalizing an absolute path, not
225 absolutizing a relative path. */
226 if (IS_ABSOLUTE_PATH (name
))
228 full_path
= xfullpath (name
);
229 make_cleanup (xfree
, full_path
);
230 real_path
= gdb_realpath (name
);
231 make_cleanup (xfree
, real_path
);
234 ALL_PSYMTABS (objfile
, pst
)
236 if (FILENAME_CMP (name
, pst
->filename
) == 0)
241 /* If the user gave us an absolute path, try to find the file in
242 this symtab and use its absolute path. */
243 if (full_path
!= NULL
)
245 if (pst
->fullname
== NULL
)
246 source_full_path_of (pst
->filename
, &pst
->fullname
);
247 if (pst
->fullname
!= NULL
248 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
254 if (real_path
!= NULL
)
257 if (pst
->fullname
== NULL
)
258 source_full_path_of (pst
->filename
, &pst
->fullname
);
259 if (pst
->fullname
!= NULL
)
261 rp
= gdb_realpath (pst
->fullname
);
262 make_cleanup (xfree
, rp
);
264 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
271 /* Now, search for a matching tail (only if name doesn't have any dirs) */
273 if (lbasename (name
) == name
)
274 ALL_PSYMTABS (objfile
, pst
)
276 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
283 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
284 full method name, which consist of the class name (from T), the unadorned
285 method name from METHOD_ID, and the signature for the specific overload,
286 specified by SIGNATURE_ID. Note that this function is g++ specific. */
289 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
291 int mangled_name_len
;
293 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
294 struct fn_field
*method
= &f
[signature_id
];
295 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
296 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
297 char *newname
= type_name_no_tag (type
);
299 /* Does the form of physname indicate that it is the full mangled name
300 of a constructor (not just the args)? */
301 int is_full_physname_constructor
;
304 int is_destructor
= is_destructor_name (physname
);
305 /* Need a new type prefix. */
306 char *const_prefix
= method
->is_const
? "C" : "";
307 char *volatile_prefix
= method
->is_volatile
? "V" : "";
309 int len
= (newname
== NULL
? 0 : strlen (newname
));
311 /* Nothing to do if physname already contains a fully mangled v3 abi name
312 or an operator name. */
313 if ((physname
[0] == '_' && physname
[1] == 'Z')
314 || is_operator_name (field_name
))
315 return xstrdup (physname
);
317 is_full_physname_constructor
= is_constructor_name (physname
);
320 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
323 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
325 if (is_destructor
|| is_full_physname_constructor
)
327 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
328 strcpy (mangled_name
, physname
);
334 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
336 else if (physname
[0] == 't' || physname
[0] == 'Q')
338 /* The physname for template and qualified methods already includes
340 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
346 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
348 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
349 + strlen (buf
) + len
+ strlen (physname
) + 1);
352 mangled_name
= (char *) xmalloc (mangled_name_len
);
354 mangled_name
[0] = '\0';
356 strcpy (mangled_name
, field_name
);
358 strcat (mangled_name
, buf
);
359 /* If the class doesn't have a name, i.e. newname NULL, then we just
360 mangle it using 0 for the length of the class. Thus it gets mangled
361 as something starting with `::' rather than `classname::'. */
363 strcat (mangled_name
, newname
);
365 strcat (mangled_name
, physname
);
366 return (mangled_name
);
370 /* Initialize the language dependent portion of a symbol
371 depending upon the language for the symbol. */
373 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
374 enum language language
)
376 gsymbol
->language
= language
;
377 if (gsymbol
->language
== language_cplus
378 || gsymbol
->language
== language_java
)
380 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
382 else if (gsymbol
->language
== language_objc
)
384 gsymbol
->language_specific
.objc_specific
.demangled_name
= NULL
;
386 /* OBSOLETE else if (SYMBOL_LANGUAGE (symbol) == language_chill) */
388 /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; */
392 memset (&gsymbol
->language_specific
, 0,
393 sizeof (gsymbol
->language_specific
));
397 /* Initialize a symbol's mangled name. */
399 /* Try to initialize the demangled name for a symbol, based on the
400 language of that symbol. If the language is set to language_auto,
401 it will attempt to find any demangling algorithm that works and
402 then set the language appropriately. If no demangling of any kind
403 is found, the language is set back to language_unknown, so we can
404 avoid doing this work again the next time we encounter the symbol.
405 Any required space to store the name is obtained from the specified
409 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
410 struct obstack
*obstack
)
412 char *mangled
= gsymbol
->name
;
413 char *demangled
= NULL
;
415 if (gsymbol
->language
== language_unknown
)
416 gsymbol
->language
= language_auto
;
417 if (gsymbol
->language
== language_cplus
418 || gsymbol
->language
== language_auto
)
421 cplus_demangle (gsymbol
->name
, DMGL_PARAMS
| DMGL_ANSI
);
422 if (demangled
!= NULL
)
424 gsymbol
->language
= language_cplus
;
425 gsymbol
->language_specific
.cplus_specific
.demangled_name
=
426 obsavestring (demangled
, strlen (demangled
), obstack
);
431 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
434 if (gsymbol
->language
== language_java
)
437 cplus_demangle (gsymbol
->name
,
438 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
439 if (demangled
!= NULL
)
441 gsymbol
->language
= language_java
;
442 gsymbol
->language_specific
.cplus_specific
.demangled_name
=
443 obsavestring (demangled
, strlen (demangled
), obstack
);
448 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
452 /* OBSOLETE if (demangled == NULL */
453 /* OBSOLETE && (gsymbol->language == language_chill */
454 /* OBSOLETE || gsymbol->language == language_auto)) */
456 /* OBSOLETE demangled = */
457 /* OBSOLETE chill_demangle (gsymbol->name); */
458 /* OBSOLETE if (demangled != NULL) */
460 /* OBSOLETE gsymbol->language = language_chill; */
461 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = */
462 /* OBSOLETE obsavestring (demangled, strlen (demangled), obstack); */
463 /* OBSOLETE xfree (demangled); */
467 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = NULL; */
473 /* Return the demangled name for a symbol based on the language for
474 that symbol. If no demangled name exists, return NULL. */
476 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
478 if (gsymbol
->language
== language_cplus
479 || gsymbol
->language
== language_java
)
480 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
482 else if (gsymbol
->language
== language_objc
)
483 return gsymbol
->language_specific
.objc_specific
.demangled_name
;
488 /* OBSOLETE (SYMBOL_LANGUAGE (symbol) == language_chill */
489 /* OBSOLETE ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) */
492 /* Initialize the structure fields to zero values. */
494 init_sal (struct symtab_and_line
*sal
)
505 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
507 struct partial_symtab
*
508 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
510 register struct partial_symtab
*pst
;
511 register struct objfile
*objfile
;
512 struct minimal_symbol
*msymbol
;
514 /* If we know that this is not a text address, return failure. This is
515 necessary because we loop based on texthigh and textlow, which do
516 not include the data ranges. */
517 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
519 && (msymbol
->type
== mst_data
520 || msymbol
->type
== mst_bss
521 || msymbol
->type
== mst_abs
522 || msymbol
->type
== mst_file_data
523 || msymbol
->type
== mst_file_bss
))
526 ALL_PSYMTABS (objfile
, pst
)
528 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
530 struct partial_symtab
*tpst
;
532 /* An objfile that has its functions reordered might have
533 many partial symbol tables containing the PC, but
534 we want the partial symbol table that contains the
535 function containing the PC. */
536 if (!(objfile
->flags
& OBJF_REORDERED
) &&
537 section
== 0) /* can't validate section this way */
543 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
545 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
547 struct partial_symbol
*p
;
549 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
551 && SYMBOL_VALUE_ADDRESS (p
)
552 == SYMBOL_VALUE_ADDRESS (msymbol
))
562 /* Find which partial symtab contains PC. Return 0 if none.
563 Backward compatibility, no section */
565 struct partial_symtab
*
566 find_pc_psymtab (CORE_ADDR pc
)
568 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
571 /* Find which partial symbol within a psymtab matches PC and SECTION.
572 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
574 struct partial_symbol
*
575 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
578 struct partial_symbol
*best
= NULL
, *p
, **pp
;
582 psymtab
= find_pc_sect_psymtab (pc
, section
);
586 /* Cope with programs that start at address 0 */
587 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
589 /* Search the global symbols as well as the static symbols, so that
590 find_pc_partial_function doesn't use a minimal symbol and thus
591 cache a bad endaddr. */
592 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
593 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
594 < psymtab
->n_global_syms
);
598 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
599 && SYMBOL_CLASS (p
) == LOC_BLOCK
600 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
601 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
602 || (psymtab
->textlow
== 0
603 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
605 if (section
) /* match on a specific section */
607 fixup_psymbol_section (p
, psymtab
->objfile
);
608 if (SYMBOL_BFD_SECTION (p
) != section
)
611 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
616 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
617 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
618 < psymtab
->n_static_syms
);
622 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
623 && SYMBOL_CLASS (p
) == LOC_BLOCK
624 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
625 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
626 || (psymtab
->textlow
== 0
627 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
629 if (section
) /* match on a specific section */
631 fixup_psymbol_section (p
, psymtab
->objfile
);
632 if (SYMBOL_BFD_SECTION (p
) != section
)
635 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
643 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
644 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
646 struct partial_symbol
*
647 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
649 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
652 /* Debug symbols usually don't have section information. We need to dig that
653 out of the minimal symbols and stash that in the debug symbol. */
656 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
658 struct minimal_symbol
*msym
;
659 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
663 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
664 ginfo
->section
= SYMBOL_SECTION (msym
);
669 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
674 if (SYMBOL_BFD_SECTION (sym
))
677 fixup_section (&sym
->ginfo
, objfile
);
682 struct partial_symbol
*
683 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
688 if (SYMBOL_BFD_SECTION (psym
))
691 fixup_section (&psym
->ginfo
, objfile
);
696 /* Find the definition for a specified symbol name NAME
697 in namespace NAMESPACE, visible from lexical block BLOCK.
698 Returns the struct symbol pointer, or zero if no symbol is found.
699 If SYMTAB is non-NULL, store the symbol table in which the
700 symbol was found there, or NULL if not found.
701 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
702 NAME is a field of the current implied argument `this'. If so set
703 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
704 BLOCK_FOUND is set to the block in which NAME is found (in the case of
705 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
707 /* This function has a bunch of loops in it and it would seem to be
708 attractive to put in some QUIT's (though I'm not really sure
709 whether it can run long enough to be really important). But there
710 are a few calls for which it would appear to be bad news to quit
711 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
712 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
713 code below which can error(), but that probably doesn't affect
714 these calls since they are looking for a known variable and thus
715 can probably assume it will never hit the C++ code). */
718 lookup_symbol (const char *name
, const struct block
*block
,
719 const namespace_enum
namespace, int *is_a_field_of_this
,
720 struct symtab
**symtab
)
722 char *demangled_name
= NULL
;
723 const char *modified_name
= NULL
;
724 const char *mangled_name
= NULL
;
725 int needtofreename
= 0;
726 struct symbol
*returnval
;
728 modified_name
= name
;
730 /* If we are using C++ language, demangle the name before doing a lookup, so
731 we can always binary search. */
732 if (current_language
->la_language
== language_cplus
)
734 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
738 modified_name
= demangled_name
;
743 if (case_sensitivity
== case_sensitive_off
)
749 copy
= (char *) alloca (len
+ 1);
750 for (i
= 0; i
< len
; i
++)
751 copy
[i
] = tolower (name
[i
]);
753 modified_name
= copy
;
756 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
757 namespace, is_a_field_of_this
, symtab
);
759 xfree (demangled_name
);
764 static struct symbol
*
765 lookup_symbol_aux (const char *name
, const char *mangled_name
,
766 const struct block
*block
, const namespace_enum
namespace,
767 int *is_a_field_of_this
, struct symtab
**symtab
)
769 register struct symbol
*sym
;
770 register struct symtab
*s
= NULL
;
771 register struct partial_symtab
*ps
;
772 register struct blockvector
*bv
;
773 register struct objfile
*objfile
= NULL
;
774 register struct block
*b
;
775 register struct minimal_symbol
*msymbol
;
778 /* Search specified block and its superiors. */
782 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
788 /* Search the list of symtabs for one which contains the
789 address of the start of this block. */
790 ALL_SYMTABS (objfile
, s
)
792 bv
= BLOCKVECTOR (s
);
793 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
794 if (BLOCK_START (b
) <= BLOCK_START (block
)
795 && BLOCK_END (b
) > BLOCK_START (block
))
802 return fixup_symbol_section (sym
, objfile
);
804 block
= BLOCK_SUPERBLOCK (block
);
807 /* FIXME: this code is never executed--block is always NULL at this
808 point. What is it trying to do, anyway? We already should have
809 checked the STATIC_BLOCK above (it is the superblock of top-level
810 blocks). Why is VAR_NAMESPACE special-cased? */
811 /* Don't need to mess with the psymtabs; if we have a block,
812 that file is read in. If we don't, then we deal later with
813 all the psymtab stuff that needs checking. */
814 /* Note (RT): The following never-executed code looks unnecessary to me also.
815 * If we change the code to use the original (passed-in)
816 * value of 'block', we could cause it to execute, but then what
817 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
818 * 'block' was already searched by the above code. And the STATIC_BLOCK's
819 * of *other* symtabs (those files not containing 'block' lexically)
820 * should not contain 'block' address-wise. So we wouldn't expect this
821 * code to find any 'sym''s that were not found above. I vote for
822 * deleting the following paragraph of code.
824 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
827 /* Find the right symtab. */
828 ALL_SYMTABS (objfile
, s
)
830 bv
= BLOCKVECTOR (s
);
831 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
832 if (BLOCK_START (b
) <= BLOCK_START (block
)
833 && BLOCK_END (b
) > BLOCK_START (block
))
835 sym
= lookup_block_symbol (b
, name
, mangled_name
, VAR_NAMESPACE
);
841 return fixup_symbol_section (sym
, objfile
);
848 /* C++: If requested to do so by the caller,
849 check to see if NAME is a field of `this'. */
850 if (is_a_field_of_this
)
852 struct value
*v
= value_of_this (0);
854 *is_a_field_of_this
= 0;
855 if (v
&& check_field (v
, name
))
857 *is_a_field_of_this
= 1;
864 /* Now search all global blocks. Do the symtab's first, then
865 check the psymtab's. If a psymtab indicates the existence
866 of the desired name as a global, then do psymtab-to-symtab
867 conversion on the fly and return the found symbol. */
869 ALL_SYMTABS (objfile
, s
)
871 bv
= BLOCKVECTOR (s
);
872 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
873 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
879 return fixup_symbol_section (sym
, objfile
);
885 /* Check for the possibility of the symbol being a function or
886 a mangled variable that is stored in one of the minimal symbol tables.
887 Eventually, all global symbols might be resolved in this way. */
889 if (namespace == VAR_NAMESPACE
)
891 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
894 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
895 SYMBOL_BFD_SECTION (msymbol
));
898 /* This is a function which has a symtab for its address. */
899 bv
= BLOCKVECTOR (s
);
900 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
902 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
903 `name' argument to lookup_block_symbol. But the name
904 of a minimal symbol is always mangled, so that seems
905 to be clearly the wrong thing to pass as the
907 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
908 /* We kept static functions in minimal symbol table as well as
909 in static scope. We want to find them in the symbol table. */
912 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
913 sym
= lookup_block_symbol (block
, name
,
914 mangled_name
, namespace);
917 /* sym == 0 if symbol was found in the minimal symbol table
918 but not in the symtab.
919 Return 0 to use the msymbol definition of "foo_".
921 This happens for Fortran "foo_" symbols,
922 which are "foo" in the symtab.
924 This can also happen if "asm" is used to make a
925 regular symbol but not a debugging symbol, e.g.
932 return fixup_symbol_section (sym
, s
->objfile
);
934 else if (MSYMBOL_TYPE (msymbol
) != mst_text
935 && MSYMBOL_TYPE (msymbol
) != mst_file_text
936 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
938 /* This is a mangled variable, look it up by its
940 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), mangled_name
, NULL
,
941 namespace, is_a_field_of_this
, symtab
);
943 /* There are no debug symbols for this file, or we are looking
944 for an unmangled variable.
945 Try to find a matching static symbol below. */
951 ALL_PSYMTABS (objfile
, ps
)
953 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
955 s
= PSYMTAB_TO_SYMTAB (ps
);
956 bv
= BLOCKVECTOR (s
);
957 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
958 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
961 /* This shouldn't be necessary, but as a last resort
962 * try looking in the statics even though the psymtab
963 * claimed the symbol was global. It's possible that
964 * the psymtab gets it wrong in some cases.
966 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
967 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
969 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
970 %s may be an inlined function, or may be a template function\n\
971 (if a template, try specifying an instantiation: %s<type>).",
972 name
, ps
->filename
, name
, name
);
976 return fixup_symbol_section (sym
, objfile
);
980 /* Now search all static file-level symbols.
981 Not strictly correct, but more useful than an error.
982 Do the symtabs first, then check the psymtabs.
983 If a psymtab indicates the existence
984 of the desired name as a file-level static, then do psymtab-to-symtab
985 conversion on the fly and return the found symbol. */
987 ALL_SYMTABS (objfile
, s
)
989 bv
= BLOCKVECTOR (s
);
990 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
991 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
997 return fixup_symbol_section (sym
, objfile
);
1001 ALL_PSYMTABS (objfile
, ps
)
1003 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
1005 s
= PSYMTAB_TO_SYMTAB (ps
);
1006 bv
= BLOCKVECTOR (s
);
1007 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1008 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1011 /* This shouldn't be necessary, but as a last resort
1012 * try looking in the globals even though the psymtab
1013 * claimed the symbol was static. It's possible that
1014 * the psymtab gets it wrong in some cases.
1016 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1017 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1019 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1020 %s may be an inlined function, or may be a template function\n\
1021 (if a template, try specifying an instantiation: %s<type>).",
1022 name
, ps
->filename
, name
, name
);
1026 return fixup_symbol_section (sym
, objfile
);
1032 /* Check for the possibility of the symbol being a function or
1033 a global variable that is stored in one of the minimal symbol tables.
1034 The "minimal symbol table" is built from linker-supplied info.
1036 RT: I moved this check to last, after the complete search of
1037 the global (p)symtab's and static (p)symtab's. For HP-generated
1038 symbol tables, this check was causing a premature exit from
1039 lookup_symbol with NULL return, and thus messing up symbol lookups
1040 of things like "c::f". It seems to me a check of the minimal
1041 symbol table ought to be a last resort in any case. I'm vaguely
1042 worried about the comment below which talks about FORTRAN routines "foo_"
1043 though... is it saying we need to do the "minsym" check before
1044 the static check in this case?
1047 if (namespace == VAR_NAMESPACE
)
1049 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1050 if (msymbol
!= NULL
)
1052 /* OK, we found a minimal symbol in spite of not
1053 * finding any symbol. There are various possible
1054 * explanations for this. One possibility is the symbol
1055 * exists in code not compiled -g. Another possibility
1056 * is that the 'psymtab' isn't doing its job.
1057 * A third possibility, related to #2, is that we were confused
1058 * by name-mangling. For instance, maybe the psymtab isn't
1059 * doing its job because it only know about demangled
1060 * names, but we were given a mangled name...
1063 /* We first use the address in the msymbol to try to
1064 * locate the appropriate symtab. Note that find_pc_symtab()
1065 * has a side-effect of doing psymtab-to-symtab expansion,
1066 * for the found symtab.
1068 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
1071 bv
= BLOCKVECTOR (s
);
1072 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1073 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
1074 `name' argument to lookup_block_symbol. But the name
1075 of a minimal symbol is always mangled, so that seems
1076 to be clearly the wrong thing to pass as the
1078 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1079 /* We kept static functions in minimal symbol table as well as
1080 in static scope. We want to find them in the symbol table. */
1083 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1084 sym
= lookup_block_symbol (block
, name
,
1085 mangled_name
, namespace);
1087 /* If we found one, return it */
1095 /* If we get here with sym == 0, the symbol was
1096 found in the minimal symbol table
1097 but not in the symtab.
1098 Fall through and return 0 to use the msymbol
1099 definition of "foo_".
1100 (Note that outer code generally follows up a call
1101 to this routine with a call to lookup_minimal_symbol(),
1102 so a 0 return means we'll just flow into that other routine).
1104 This happens for Fortran "foo_" symbols,
1105 which are "foo" in the symtab.
1107 This can also happen if "asm" is used to make a
1108 regular symbol but not a debugging symbol, e.g.
1109 asm(".globl _main");
1114 /* If the lookup-by-address fails, try repeating the
1115 * entire lookup process with the symbol name from
1116 * the msymbol (if different from the original symbol name).
1118 else if (MSYMBOL_TYPE (msymbol
) != mst_text
1119 && MSYMBOL_TYPE (msymbol
) != mst_file_text
1120 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
1122 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), mangled_name
,
1123 NULL
, namespace, is_a_field_of_this
,
1136 /* Look, in partial_symtab PST, for symbol NAME. Check the global
1137 symbols if GLOBAL, the static symbols if not */
1139 static struct partial_symbol
*
1140 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
1141 namespace_enum
namespace)
1143 struct partial_symbol
*temp
;
1144 struct partial_symbol
**start
, **psym
;
1145 struct partial_symbol
**top
, **bottom
, **center
;
1146 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1147 int do_linear_search
= 1;
1154 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1155 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1157 if (global
) /* This means we can use a binary search. */
1159 do_linear_search
= 0;
1161 /* Binary search. This search is guaranteed to end with center
1162 pointing at the earliest partial symbol with the correct
1163 name. At that point *all* partial symbols with that name
1164 will be checked against the correct namespace. */
1167 top
= start
+ length
- 1;
1168 while (top
> bottom
)
1170 center
= bottom
+ (top
- bottom
) / 2;
1171 if (!(center
< top
))
1172 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1173 if (!do_linear_search
1174 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1176 do_linear_search
= 1;
1178 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1184 bottom
= center
+ 1;
1187 if (!(top
== bottom
))
1188 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1190 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1191 we don't have to force a linear search on C++. Probably holds true
1192 for JAVA as well, no way to check.*/
1193 while (SYMBOL_MATCHES_NAME (*top
,name
))
1195 if (SYMBOL_NAMESPACE (*top
) == namespace)
1203 /* Can't use a binary search or else we found during the binary search that
1204 we should also do a linear search. */
1206 if (do_linear_search
)
1208 for (psym
= start
; psym
< start
+ length
; psym
++)
1210 if (namespace == SYMBOL_NAMESPACE (*psym
))
1212 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1223 /* Look up a type named NAME in the struct_namespace. The type returned
1224 must not be opaque -- i.e., must have at least one field defined
1226 This code was modelled on lookup_symbol -- the parts not relevant to looking
1227 up types were just left out. In particular it's assumed here that types
1228 are available in struct_namespace and only at file-static or global blocks. */
1232 lookup_transparent_type (const char *name
)
1234 register struct symbol
*sym
;
1235 register struct symtab
*s
= NULL
;
1236 register struct partial_symtab
*ps
;
1237 struct blockvector
*bv
;
1238 register struct objfile
*objfile
;
1239 register struct block
*block
;
1241 /* Now search all the global symbols. Do the symtab's first, then
1242 check the psymtab's. If a psymtab indicates the existence
1243 of the desired name as a global, then do psymtab-to-symtab
1244 conversion on the fly and return the found symbol. */
1246 ALL_SYMTABS (objfile
, s
)
1248 bv
= BLOCKVECTOR (s
);
1249 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1250 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1251 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1253 return SYMBOL_TYPE (sym
);
1257 ALL_PSYMTABS (objfile
, ps
)
1259 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1261 s
= PSYMTAB_TO_SYMTAB (ps
);
1262 bv
= BLOCKVECTOR (s
);
1263 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1264 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1267 /* This shouldn't be necessary, but as a last resort
1268 * try looking in the statics even though the psymtab
1269 * claimed the symbol was global. It's possible that
1270 * the psymtab gets it wrong in some cases.
1272 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1273 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1275 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1276 %s may be an inlined function, or may be a template function\n\
1277 (if a template, try specifying an instantiation: %s<type>).",
1278 name
, ps
->filename
, name
, name
);
1280 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1281 return SYMBOL_TYPE (sym
);
1285 /* Now search the static file-level symbols.
1286 Not strictly correct, but more useful than an error.
1287 Do the symtab's first, then
1288 check the psymtab's. If a psymtab indicates the existence
1289 of the desired name as a file-level static, then do psymtab-to-symtab
1290 conversion on the fly and return the found symbol.
1293 ALL_SYMTABS (objfile
, s
)
1295 bv
= BLOCKVECTOR (s
);
1296 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1297 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1298 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1300 return SYMBOL_TYPE (sym
);
1304 ALL_PSYMTABS (objfile
, ps
)
1306 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1308 s
= PSYMTAB_TO_SYMTAB (ps
);
1309 bv
= BLOCKVECTOR (s
);
1310 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1311 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1314 /* This shouldn't be necessary, but as a last resort
1315 * try looking in the globals even though the psymtab
1316 * claimed the symbol was static. It's possible that
1317 * the psymtab gets it wrong in some cases.
1319 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1320 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1322 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1323 %s may be an inlined function, or may be a template function\n\
1324 (if a template, try specifying an instantiation: %s<type>).",
1325 name
, ps
->filename
, name
, name
);
1327 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1328 return SYMBOL_TYPE (sym
);
1331 return (struct type
*) 0;
1335 /* Find the psymtab containing main(). */
1336 /* FIXME: What about languages without main() or specially linked
1337 executables that have no main() ? */
1339 struct partial_symtab
*
1340 find_main_psymtab (void)
1342 register struct partial_symtab
*pst
;
1343 register struct objfile
*objfile
;
1345 ALL_PSYMTABS (objfile
, pst
)
1347 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1355 /* Search BLOCK for symbol NAME in NAMESPACE.
1357 Note that if NAME is the demangled form of a C++ symbol, we will fail
1358 to find a match during the binary search of the non-encoded names, but
1359 for now we don't worry about the slight inefficiency of looking for
1360 a match we'll never find, since it will go pretty quick. Once the
1361 binary search terminates, we drop through and do a straight linear
1362 search on the symbols. Each symbol which is marked as being a C++
1363 symbol (language_cplus set) has both the encoded and non-encoded names
1366 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1367 particular mangled name.
1371 lookup_block_symbol (register const struct block
*block
, const char *name
,
1372 const char *mangled_name
,
1373 const namespace_enum
namespace)
1375 register int bot
, top
, inc
;
1376 register struct symbol
*sym
;
1377 register struct symbol
*sym_found
= NULL
;
1378 register int do_linear_search
= 1;
1380 if (BLOCK_HASHTABLE (block
))
1382 unsigned int hash_index
;
1383 hash_index
= msymbol_hash_iw (name
);
1384 hash_index
= hash_index
% BLOCK_BUCKETS (block
);
1385 for (sym
= BLOCK_BUCKET (block
, hash_index
); sym
; sym
= sym
->hash_next
)
1387 if (SYMBOL_NAMESPACE (sym
) == namespace
1389 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1390 : SYMBOL_MATCHES_NAME (sym
, name
)))
1396 /* If the blocks's symbols were sorted, start with a binary search. */
1398 if (BLOCK_SHOULD_SORT (block
))
1400 /* Reset the linear search flag so if the binary search fails, we
1401 won't do the linear search once unless we find some reason to
1404 do_linear_search
= 0;
1405 top
= BLOCK_NSYMS (block
);
1408 /* Advance BOT to not far before the first symbol whose name is NAME. */
1412 inc
= (top
- bot
+ 1);
1413 /* No need to keep binary searching for the last few bits worth. */
1418 inc
= (inc
>> 1) + bot
;
1419 sym
= BLOCK_SYM (block
, inc
);
1420 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1422 do_linear_search
= 1;
1424 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1428 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1432 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1442 /* Now scan forward until we run out of symbols, find one whose
1443 name is greater than NAME, or find one we want. If there is
1444 more than one symbol with the right name and namespace, we
1445 return the first one; I believe it is now impossible for us
1446 to encounter two symbols with the same name and namespace
1447 here, because blocks containing argument symbols are no
1448 longer sorted. The exception is for C++, where multiple functions
1449 (cloned constructors / destructors, in particular) can have
1450 the same demangled name. So if we have a particular
1451 mangled name to match, try to do so. */
1453 top
= BLOCK_NSYMS (block
);
1456 sym
= BLOCK_SYM (block
, bot
);
1457 if (SYMBOL_NAMESPACE (sym
) == namespace
1459 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1460 : SYMBOL_MATCHES_NAME (sym
, name
)))
1464 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1472 /* Here if block isn't sorted, or we fail to find a match during the
1473 binary search above. If during the binary search above, we find a
1474 symbol which is a Java symbol, then we have re-enabled the linear
1475 search flag which was reset when starting the binary search.
1477 This loop is equivalent to the loop above, but hacked greatly for speed.
1479 Note that parameter symbols do not always show up last in the
1480 list; this loop makes sure to take anything else other than
1481 parameter symbols first; it only uses parameter symbols as a
1482 last resort. Note that this only takes up extra computation
1485 if (do_linear_search
)
1487 top
= BLOCK_NSYMS (block
);
1491 sym
= BLOCK_SYM (block
, bot
);
1492 if (SYMBOL_NAMESPACE (sym
) == namespace
1494 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1495 : SYMBOL_MATCHES_NAME (sym
, name
)))
1497 /* If SYM has aliases, then use any alias that is active
1498 at the current PC. If no alias is active at the current
1499 PC, then use the main symbol.
1501 ?!? Is checking the current pc correct? Is this routine
1502 ever called to look up a symbol from another context?
1504 FIXME: No, it's not correct. If someone sets a
1505 conditional breakpoint at an address, then the
1506 breakpoint's `struct expression' should refer to the
1507 `struct symbol' appropriate for the breakpoint's
1508 address, which may not be the PC.
1510 Even if it were never called from another context,
1511 it's totally bizarre for lookup_symbol's behavior to
1512 depend on the value of the inferior's current PC. We
1513 should pass in the appropriate PC as well as the
1514 block. The interface to lookup_symbol should change
1515 to require the caller to provide a PC. */
1517 if (SYMBOL_ALIASES (sym
))
1518 sym
= find_active_alias (sym
, read_pc ());
1521 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1522 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1523 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1524 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1525 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1526 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1534 return (sym_found
); /* Will be NULL if not found. */
1537 /* Given a main symbol SYM and ADDR, search through the alias
1538 list to determine if an alias is active at ADDR and return
1541 If no alias is active, then return SYM. */
1543 static struct symbol
*
1544 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1546 struct range_list
*r
;
1547 struct alias_list
*aliases
;
1549 /* If we have aliases, check them first. */
1550 aliases
= SYMBOL_ALIASES (sym
);
1554 if (!SYMBOL_RANGES (aliases
->sym
))
1555 return aliases
->sym
;
1556 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1558 if (r
->start
<= addr
&& r
->end
> addr
)
1559 return aliases
->sym
;
1561 aliases
= aliases
->next
;
1564 /* Nothing found, return the main symbol. */
1569 /* Return the symbol for the function which contains a specified
1570 lexical block, described by a struct block BL. */
1573 block_function (struct block
*bl
)
1575 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1576 bl
= BLOCK_SUPERBLOCK (bl
);
1578 return BLOCK_FUNCTION (bl
);
1581 /* Find the symtab associated with PC and SECTION. Look through the
1582 psymtabs and read in another symtab if necessary. */
1585 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1587 register struct block
*b
;
1588 struct blockvector
*bv
;
1589 register struct symtab
*s
= NULL
;
1590 register struct symtab
*best_s
= NULL
;
1591 register struct partial_symtab
*ps
;
1592 register struct objfile
*objfile
;
1593 CORE_ADDR distance
= 0;
1594 struct minimal_symbol
*msymbol
;
1596 /* If we know that this is not a text address, return failure. This is
1597 necessary because we loop based on the block's high and low code
1598 addresses, which do not include the data ranges, and because
1599 we call find_pc_sect_psymtab which has a similar restriction based
1600 on the partial_symtab's texthigh and textlow. */
1601 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1603 && (msymbol
->type
== mst_data
1604 || msymbol
->type
== mst_bss
1605 || msymbol
->type
== mst_abs
1606 || msymbol
->type
== mst_file_data
1607 || msymbol
->type
== mst_file_bss
))
1610 /* Search all symtabs for the one whose file contains our address, and which
1611 is the smallest of all the ones containing the address. This is designed
1612 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1613 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1614 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1616 This happens for native ecoff format, where code from included files
1617 gets its own symtab. The symtab for the included file should have
1618 been read in already via the dependency mechanism.
1619 It might be swifter to create several symtabs with the same name
1620 like xcoff does (I'm not sure).
1622 It also happens for objfiles that have their functions reordered.
1623 For these, the symtab we are looking for is not necessarily read in. */
1625 ALL_SYMTABS (objfile
, s
)
1627 bv
= BLOCKVECTOR (s
);
1628 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1630 if (BLOCK_START (b
) <= pc
1631 && BLOCK_END (b
) > pc
1633 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1635 /* For an objfile that has its functions reordered,
1636 find_pc_psymtab will find the proper partial symbol table
1637 and we simply return its corresponding symtab. */
1638 /* In order to better support objfiles that contain both
1639 stabs and coff debugging info, we continue on if a psymtab
1641 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1643 ps
= find_pc_sect_psymtab (pc
, section
);
1645 return PSYMTAB_TO_SYMTAB (ps
);
1650 struct symbol
*sym
= NULL
;
1652 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
1654 fixup_symbol_section (sym
, objfile
);
1655 if (section
== SYMBOL_BFD_SECTION (sym
))
1658 if ((i
>= BLOCK_BUCKETS (b
)) && (sym
== NULL
))
1659 continue; /* no symbol in this symtab matches section */
1661 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1670 ps
= find_pc_sect_psymtab (pc
, section
);
1674 /* Might want to error() here (in case symtab is corrupt and
1675 will cause a core dump), but maybe we can successfully
1676 continue, so let's not. */
1678 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1680 s
= PSYMTAB_TO_SYMTAB (ps
);
1685 /* Find the symtab associated with PC. Look through the psymtabs and
1686 read in another symtab if necessary. Backward compatibility, no section */
1689 find_pc_symtab (CORE_ADDR pc
)
1691 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1695 /* Find the source file and line number for a given PC value and SECTION.
1696 Return a structure containing a symtab pointer, a line number,
1697 and a pc range for the entire source line.
1698 The value's .pc field is NOT the specified pc.
1699 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1700 use the line that ends there. Otherwise, in that case, the line
1701 that begins there is used. */
1703 /* The big complication here is that a line may start in one file, and end just
1704 before the start of another file. This usually occurs when you #include
1705 code in the middle of a subroutine. To properly find the end of a line's PC
1706 range, we must search all symtabs associated with this compilation unit, and
1707 find the one whose first PC is closer than that of the next line in this
1710 /* If it's worth the effort, we could be using a binary search. */
1712 struct symtab_and_line
1713 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1716 register struct linetable
*l
;
1719 register struct linetable_entry
*item
;
1720 struct symtab_and_line val
;
1721 struct blockvector
*bv
;
1722 struct minimal_symbol
*msymbol
;
1723 struct minimal_symbol
*mfunsym
;
1725 /* Info on best line seen so far, and where it starts, and its file. */
1727 struct linetable_entry
*best
= NULL
;
1728 CORE_ADDR best_end
= 0;
1729 struct symtab
*best_symtab
= 0;
1731 /* Store here the first line number
1732 of a file which contains the line at the smallest pc after PC.
1733 If we don't find a line whose range contains PC,
1734 we will use a line one less than this,
1735 with a range from the start of that file to the first line's pc. */
1736 struct linetable_entry
*alt
= NULL
;
1737 struct symtab
*alt_symtab
= 0;
1739 /* Info on best line seen in this file. */
1741 struct linetable_entry
*prev
;
1743 /* If this pc is not from the current frame,
1744 it is the address of the end of a call instruction.
1745 Quite likely that is the start of the following statement.
1746 But what we want is the statement containing the instruction.
1747 Fudge the pc to make sure we get that. */
1749 init_sal (&val
); /* initialize to zeroes */
1751 /* It's tempting to assume that, if we can't find debugging info for
1752 any function enclosing PC, that we shouldn't search for line
1753 number info, either. However, GAS can emit line number info for
1754 assembly files --- very helpful when debugging hand-written
1755 assembly code. In such a case, we'd have no debug info for the
1756 function, but we would have line info. */
1761 /* elz: added this because this function returned the wrong
1762 information if the pc belongs to a stub (import/export)
1763 to call a shlib function. This stub would be anywhere between
1764 two functions in the target, and the line info was erroneously
1765 taken to be the one of the line before the pc.
1767 /* RT: Further explanation:
1769 * We have stubs (trampolines) inserted between procedures.
1771 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1772 * exists in the main image.
1774 * In the minimal symbol table, we have a bunch of symbols
1775 * sorted by start address. The stubs are marked as "trampoline",
1776 * the others appear as text. E.g.:
1778 * Minimal symbol table for main image
1779 * main: code for main (text symbol)
1780 * shr1: stub (trampoline symbol)
1781 * foo: code for foo (text symbol)
1783 * Minimal symbol table for "shr1" image:
1785 * shr1: code for shr1 (text symbol)
1788 * So the code below is trying to detect if we are in the stub
1789 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1790 * and if found, do the symbolization from the real-code address
1791 * rather than the stub address.
1793 * Assumptions being made about the minimal symbol table:
1794 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1795 * if we're really in the trampoline. If we're beyond it (say
1796 * we're in "foo" in the above example), it'll have a closer
1797 * symbol (the "foo" text symbol for example) and will not
1798 * return the trampoline.
1799 * 2. lookup_minimal_symbol_text() will find a real text symbol
1800 * corresponding to the trampoline, and whose address will
1801 * be different than the trampoline address. I put in a sanity
1802 * check for the address being the same, to avoid an
1803 * infinite recursion.
1805 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1806 if (msymbol
!= NULL
)
1807 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1809 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1810 if (mfunsym
== NULL
)
1811 /* I eliminated this warning since it is coming out
1812 * in the following situation:
1813 * gdb shmain // test program with shared libraries
1814 * (gdb) break shr1 // function in shared lib
1815 * Warning: In stub for ...
1816 * In the above situation, the shared lib is not loaded yet,
1817 * so of course we can't find the real func/line info,
1818 * but the "break" still works, and the warning is annoying.
1819 * So I commented out the warning. RT */
1820 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1822 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1823 /* Avoid infinite recursion */
1824 /* See above comment about why warning is commented out */
1825 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1828 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1832 s
= find_pc_sect_symtab (pc
, section
);
1835 /* if no symbol information, return previous pc */
1842 bv
= BLOCKVECTOR (s
);
1844 /* Look at all the symtabs that share this blockvector.
1845 They all have the same apriori range, that we found was right;
1846 but they have different line tables. */
1848 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1850 /* Find the best line in this symtab. */
1857 /* I think len can be zero if the symtab lacks line numbers
1858 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1859 I'm not sure which, and maybe it depends on the symbol
1865 item
= l
->item
; /* Get first line info */
1867 /* Is this file's first line closer than the first lines of other files?
1868 If so, record this file, and its first line, as best alternate. */
1869 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1875 for (i
= 0; i
< len
; i
++, item
++)
1877 /* Leave prev pointing to the linetable entry for the last line
1878 that started at or before PC. */
1885 /* At this point, prev points at the line whose start addr is <= pc, and
1886 item points at the next line. If we ran off the end of the linetable
1887 (pc >= start of the last line), then prev == item. If pc < start of
1888 the first line, prev will not be set. */
1890 /* Is this file's best line closer than the best in the other files?
1891 If so, record this file, and its best line, as best so far. */
1893 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1898 /* Discard BEST_END if it's before the PC of the current BEST. */
1899 if (best_end
<= best
->pc
)
1903 /* If another line (denoted by ITEM) is in the linetable and its
1904 PC is after BEST's PC, but before the current BEST_END, then
1905 use ITEM's PC as the new best_end. */
1906 if (best
&& i
< len
&& item
->pc
> best
->pc
1907 && (best_end
== 0 || best_end
> item
->pc
))
1908 best_end
= item
->pc
;
1914 { /* If we didn't find any line # info, just
1920 val
.symtab
= alt_symtab
;
1921 val
.line
= alt
->line
- 1;
1923 /* Don't return line 0, that means that we didn't find the line. */
1927 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1931 else if (best
->line
== 0)
1933 /* If our best fit is in a range of PC's for which no line
1934 number info is available (line number is zero) then we didn't
1935 find any valid line information. */
1940 val
.symtab
= best_symtab
;
1941 val
.line
= best
->line
;
1943 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1948 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1950 val
.section
= section
;
1954 /* Backward compatibility (no section) */
1956 struct symtab_and_line
1957 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1961 section
= find_pc_overlay (pc
);
1962 if (pc_in_unmapped_range (pc
, section
))
1963 pc
= overlay_mapped_address (pc
, section
);
1964 return find_pc_sect_line (pc
, section
, notcurrent
);
1967 /* Find line number LINE in any symtab whose name is the same as
1970 If found, return the symtab that contains the linetable in which it was
1971 found, set *INDEX to the index in the linetable of the best entry
1972 found, and set *EXACT_MATCH nonzero if the value returned is an
1975 If not found, return NULL. */
1978 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1982 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1986 struct linetable
*best_linetable
;
1987 struct symtab
*best_symtab
;
1989 /* First try looking it up in the given symtab. */
1990 best_linetable
= LINETABLE (symtab
);
1991 best_symtab
= symtab
;
1992 best_index
= find_line_common (best_linetable
, line
, &exact
);
1993 if (best_index
< 0 || !exact
)
1995 /* Didn't find an exact match. So we better keep looking for
1996 another symtab with the same name. In the case of xcoff,
1997 multiple csects for one source file (produced by IBM's FORTRAN
1998 compiler) produce multiple symtabs (this is unavoidable
1999 assuming csects can be at arbitrary places in memory and that
2000 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2002 /* BEST is the smallest linenumber > LINE so far seen,
2003 or 0 if none has been seen so far.
2004 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2007 struct objfile
*objfile
;
2010 if (best_index
>= 0)
2011 best
= best_linetable
->item
[best_index
].line
;
2015 ALL_SYMTABS (objfile
, s
)
2017 struct linetable
*l
;
2020 if (!STREQ (symtab
->filename
, s
->filename
))
2023 ind
= find_line_common (l
, line
, &exact
);
2033 if (best
== 0 || l
->item
[ind
].line
< best
)
2035 best
= l
->item
[ind
].line
;
2048 *index
= best_index
;
2050 *exact_match
= exact
;
2055 /* Set the PC value for a given source file and line number and return true.
2056 Returns zero for invalid line number (and sets the PC to 0).
2057 The source file is specified with a struct symtab. */
2060 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2062 struct linetable
*l
;
2069 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2072 l
= LINETABLE (symtab
);
2073 *pc
= l
->item
[ind
].pc
;
2080 /* Find the range of pc values in a line.
2081 Store the starting pc of the line into *STARTPTR
2082 and the ending pc (start of next line) into *ENDPTR.
2083 Returns 1 to indicate success.
2084 Returns 0 if could not find the specified line. */
2087 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2090 CORE_ADDR startaddr
;
2091 struct symtab_and_line found_sal
;
2094 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2097 /* This whole function is based on address. For example, if line 10 has
2098 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2099 "info line *0x123" should say the line goes from 0x100 to 0x200
2100 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2101 This also insures that we never give a range like "starts at 0x134
2102 and ends at 0x12c". */
2104 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2105 if (found_sal
.line
!= sal
.line
)
2107 /* The specified line (sal) has zero bytes. */
2108 *startptr
= found_sal
.pc
;
2109 *endptr
= found_sal
.pc
;
2113 *startptr
= found_sal
.pc
;
2114 *endptr
= found_sal
.end
;
2119 /* Given a line table and a line number, return the index into the line
2120 table for the pc of the nearest line whose number is >= the specified one.
2121 Return -1 if none is found. The value is >= 0 if it is an index.
2123 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2126 find_line_common (register struct linetable
*l
, register int lineno
,
2132 /* BEST is the smallest linenumber > LINENO so far seen,
2133 or 0 if none has been seen so far.
2134 BEST_INDEX identifies the item for it. */
2136 int best_index
= -1;
2145 for (i
= 0; i
< len
; i
++)
2147 register struct linetable_entry
*item
= &(l
->item
[i
]);
2149 if (item
->line
== lineno
)
2151 /* Return the first (lowest address) entry which matches. */
2156 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2163 /* If we got here, we didn't get an exact match. */
2170 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2172 struct symtab_and_line sal
;
2173 sal
= find_pc_line (pc
, 0);
2176 return sal
.symtab
!= 0;
2179 /* Given a function symbol SYM, find the symtab and line for the start
2181 If the argument FUNFIRSTLINE is nonzero, we want the first line
2182 of real code inside the function. */
2184 struct symtab_and_line
2185 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2188 struct symtab_and_line sal
;
2190 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2191 fixup_symbol_section (sym
, NULL
);
2193 { /* skip "first line" of function (which is actually its prologue) */
2194 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2195 /* If function is in an unmapped overlay, use its unmapped LMA
2196 address, so that SKIP_PROLOGUE has something unique to work on */
2197 if (section_is_overlay (section
) &&
2198 !section_is_mapped (section
))
2199 pc
= overlay_unmapped_address (pc
, section
);
2201 pc
+= FUNCTION_START_OFFSET
;
2202 pc
= SKIP_PROLOGUE (pc
);
2204 /* For overlays, map pc back into its mapped VMA range */
2205 pc
= overlay_mapped_address (pc
, section
);
2207 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2209 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2210 /* Convex: no need to suppress code on first line, if any */
2213 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2214 line is still part of the same function. */
2216 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2217 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2219 /* First pc of next line */
2221 /* Recalculate the line number (might not be N+1). */
2222 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2230 /* If P is of the form "operator[ \t]+..." where `...' is
2231 some legitimate operator text, return a pointer to the
2232 beginning of the substring of the operator text.
2233 Otherwise, return "". */
2235 operator_chars (char *p
, char **end
)
2238 if (strncmp (p
, "operator", 8))
2242 /* Don't get faked out by `operator' being part of a longer
2244 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2247 /* Allow some whitespace between `operator' and the operator symbol. */
2248 while (*p
== ' ' || *p
== '\t')
2251 /* Recognize 'operator TYPENAME'. */
2253 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2255 register char *q
= p
+ 1;
2256 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2265 case '\\': /* regexp quoting */
2268 if (p
[2] == '=') /* 'operator\*=' */
2270 else /* 'operator\*' */
2274 else if (p
[1] == '[')
2277 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2278 else if (p
[2] == '\\' && p
[3] == ']')
2280 *end
= p
+ 4; /* 'operator\[\]' */
2284 error ("nothing is allowed between '[' and ']'");
2288 /* Gratuitous qoute: skip it and move on. */
2310 if (p
[0] == '-' && p
[1] == '>')
2312 /* Struct pointer member operator 'operator->'. */
2315 *end
= p
+ 3; /* 'operator->*' */
2318 else if (p
[2] == '\\')
2320 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2325 *end
= p
+ 2; /* 'operator->' */
2329 if (p
[1] == '=' || p
[1] == p
[0])
2340 error ("`operator ()' must be specified without whitespace in `()'");
2345 error ("`operator ?:' must be specified without whitespace in `?:'");
2350 error ("`operator []' must be specified without whitespace in `[]'");
2354 error ("`operator %s' not supported", p
);
2363 /* If FILE is not already in the table of files, return zero;
2364 otherwise return non-zero. Optionally add FILE to the table if ADD
2365 is non-zero. If *FIRST is non-zero, forget the old table
2368 filename_seen (const char *file
, int add
, int *first
)
2370 /* Table of files seen so far. */
2371 static const char **tab
= NULL
;
2372 /* Allocated size of tab in elements.
2373 Start with one 256-byte block (when using GNU malloc.c).
2374 24 is the malloc overhead when range checking is in effect. */
2375 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2376 /* Current size of tab in elements. */
2377 static int tab_cur_size
;
2383 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2387 /* Is FILE in tab? */
2388 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2389 if (strcmp (*p
, file
) == 0)
2392 /* No; maybe add it to tab. */
2395 if (tab_cur_size
== tab_alloc_size
)
2397 tab_alloc_size
*= 2;
2398 tab
= (const char **) xrealloc ((char *) tab
,
2399 tab_alloc_size
* sizeof (*tab
));
2401 tab
[tab_cur_size
++] = file
;
2407 /* Slave routine for sources_info. Force line breaks at ,'s.
2408 NAME is the name to print and *FIRST is nonzero if this is the first
2409 name printed. Set *FIRST to zero. */
2411 output_source_filename (char *name
, int *first
)
2413 /* Since a single source file can result in several partial symbol
2414 tables, we need to avoid printing it more than once. Note: if
2415 some of the psymtabs are read in and some are not, it gets
2416 printed both under "Source files for which symbols have been
2417 read" and "Source files for which symbols will be read in on
2418 demand". I consider this a reasonable way to deal with the
2419 situation. I'm not sure whether this can also happen for
2420 symtabs; it doesn't hurt to check. */
2422 /* Was NAME already seen? */
2423 if (filename_seen (name
, 1, first
))
2425 /* Yes; don't print it again. */
2428 /* No; print it and reset *FIRST. */
2435 printf_filtered (", ");
2439 fputs_filtered (name
, gdb_stdout
);
2443 sources_info (char *ignore
, int from_tty
)
2445 register struct symtab
*s
;
2446 register struct partial_symtab
*ps
;
2447 register struct objfile
*objfile
;
2450 if (!have_full_symbols () && !have_partial_symbols ())
2452 error ("No symbol table is loaded. Use the \"file\" command.");
2455 printf_filtered ("Source files for which symbols have been read in:\n\n");
2458 ALL_SYMTABS (objfile
, s
)
2460 output_source_filename (s
->filename
, &first
);
2462 printf_filtered ("\n\n");
2464 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2467 ALL_PSYMTABS (objfile
, ps
)
2471 output_source_filename (ps
->filename
, &first
);
2474 printf_filtered ("\n");
2478 file_matches (char *file
, char *files
[], int nfiles
)
2482 if (file
!= NULL
&& nfiles
!= 0)
2484 for (i
= 0; i
< nfiles
; i
++)
2486 if (strcmp (files
[i
], lbasename (file
)) == 0)
2490 else if (nfiles
== 0)
2495 /* Free any memory associated with a search. */
2497 free_search_symbols (struct symbol_search
*symbols
)
2499 struct symbol_search
*p
;
2500 struct symbol_search
*next
;
2502 for (p
= symbols
; p
!= NULL
; p
= next
)
2510 do_free_search_symbols_cleanup (void *symbols
)
2512 free_search_symbols (symbols
);
2516 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2518 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2521 /* Helper function for sort_search_symbols and qsort. Can only
2522 sort symbols, not minimal symbols. */
2524 compare_search_syms (const void *sa
, const void *sb
)
2526 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2527 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2529 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a
)->symbol
),
2530 SYMBOL_SOURCE_NAME ((*sym_b
)->symbol
));
2533 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2534 prevtail where it is, but update its next pointer to point to
2535 the first of the sorted symbols. */
2536 static struct symbol_search
*
2537 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2539 struct symbol_search
**symbols
, *symp
, *old_next
;
2542 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2544 symp
= prevtail
->next
;
2545 for (i
= 0; i
< nfound
; i
++)
2550 /* Generally NULL. */
2553 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2554 compare_search_syms
);
2557 for (i
= 0; i
< nfound
; i
++)
2559 symp
->next
= symbols
[i
];
2562 symp
->next
= old_next
;
2568 /* Search the symbol table for matches to the regular expression REGEXP,
2569 returning the results in *MATCHES.
2571 Only symbols of KIND are searched:
2572 FUNCTIONS_NAMESPACE - search all functions
2573 TYPES_NAMESPACE - search all type names
2574 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2575 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2576 and constants (enums)
2578 free_search_symbols should be called when *MATCHES is no longer needed.
2580 The results are sorted locally; each symtab's global and static blocks are
2581 separately alphabetized.
2584 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2585 struct symbol_search
**matches
)
2587 register struct symtab
*s
;
2588 register struct partial_symtab
*ps
;
2589 register struct blockvector
*bv
;
2590 struct blockvector
*prev_bv
= 0;
2591 register struct block
*b
;
2594 register struct symbol
*sym
;
2595 struct partial_symbol
**psym
;
2596 struct objfile
*objfile
;
2597 struct minimal_symbol
*msymbol
;
2600 static enum minimal_symbol_type types
[]
2602 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2603 static enum minimal_symbol_type types2
[]
2605 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2606 static enum minimal_symbol_type types3
[]
2608 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2609 static enum minimal_symbol_type types4
[]
2611 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2612 enum minimal_symbol_type ourtype
;
2613 enum minimal_symbol_type ourtype2
;
2614 enum minimal_symbol_type ourtype3
;
2615 enum minimal_symbol_type ourtype4
;
2616 struct symbol_search
*sr
;
2617 struct symbol_search
*psr
;
2618 struct symbol_search
*tail
;
2619 struct cleanup
*old_chain
= NULL
;
2621 if (kind
< VARIABLES_NAMESPACE
)
2622 error ("must search on specific namespace");
2624 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2625 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2626 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2627 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2629 sr
= *matches
= NULL
;
2634 /* Make sure spacing is right for C++ operators.
2635 This is just a courtesy to make the matching less sensitive
2636 to how many spaces the user leaves between 'operator'
2637 and <TYPENAME> or <OPERATOR>. */
2639 char *opname
= operator_chars (regexp
, &opend
);
2642 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2643 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2645 /* There should 1 space between 'operator' and 'TYPENAME'. */
2646 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2651 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2652 if (opname
[-1] == ' ')
2655 /* If wrong number of spaces, fix it. */
2658 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2659 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2664 if (0 != (val
= re_comp (regexp
)))
2665 error ("Invalid regexp (%s): %s", val
, regexp
);
2668 /* Search through the partial symtabs *first* for all symbols
2669 matching the regexp. That way we don't have to reproduce all of
2670 the machinery below. */
2672 ALL_PSYMTABS (objfile
, ps
)
2674 struct partial_symbol
**bound
, **gbound
, **sbound
;
2680 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2681 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2684 /* Go through all of the symbols stored in a partial
2685 symtab in one loop. */
2686 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2691 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2693 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2704 /* If it would match (logic taken from loop below)
2705 load the file and go on to the next one */
2706 if (file_matches (ps
->filename
, files
, nfiles
)
2707 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2708 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2709 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2710 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2711 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2712 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2714 PSYMTAB_TO_SYMTAB (ps
);
2722 /* Here, we search through the minimal symbol tables for functions
2723 and variables that match, and force their symbols to be read.
2724 This is in particular necessary for demangled variable names,
2725 which are no longer put into the partial symbol tables.
2726 The symbol will then be found during the scan of symtabs below.
2728 For functions, find_pc_symtab should succeed if we have debug info
2729 for the function, for variables we have to call lookup_symbol
2730 to determine if the variable has debug info.
2731 If the lookup fails, set found_misc so that we will rescan to print
2732 any matching symbols without debug info.
2735 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2737 ALL_MSYMBOLS (objfile
, msymbol
)
2739 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2740 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2741 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2742 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2744 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2746 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2748 if (kind
== FUNCTIONS_NAMESPACE
2749 || lookup_symbol (SYMBOL_NAME (msymbol
),
2750 (struct block
*) NULL
,
2752 0, (struct symtab
**) NULL
) == NULL
)
2760 ALL_SYMTABS (objfile
, s
)
2762 bv
= BLOCKVECTOR (s
);
2763 /* Often many files share a blockvector.
2764 Scan each blockvector only once so that
2765 we don't get every symbol many times.
2766 It happens that the first symtab in the list
2767 for any given blockvector is the main file. */
2769 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2771 struct symbol_search
*prevtail
= tail
;
2773 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2774 ALL_BLOCK_SYMBOLS (b
, j
, sym
)
2777 if (file_matches (s
->filename
, files
, nfiles
)
2778 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2779 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2780 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2781 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2782 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2783 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2784 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2787 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2791 psr
->msymbol
= NULL
;
2803 if (prevtail
== NULL
)
2805 struct symbol_search dummy
;
2808 tail
= sort_search_symbols (&dummy
, nfound
);
2811 old_chain
= make_cleanup_free_search_symbols (sr
);
2814 tail
= sort_search_symbols (prevtail
, nfound
);
2820 /* If there are no eyes, avoid all contact. I mean, if there are
2821 no debug symbols, then print directly from the msymbol_vector. */
2823 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2825 ALL_MSYMBOLS (objfile
, msymbol
)
2827 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2828 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2829 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2830 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2832 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2834 /* Functions: Look up by address. */
2835 if (kind
!= FUNCTIONS_NAMESPACE
||
2836 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2838 /* Variables/Absolutes: Look up by name */
2839 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2840 (struct block
*) NULL
, VAR_NAMESPACE
,
2841 0, (struct symtab
**) NULL
) == NULL
)
2844 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2846 psr
->msymbol
= msymbol
;
2853 old_chain
= make_cleanup_free_search_symbols (sr
);
2867 discard_cleanups (old_chain
);
2870 /* Helper function for symtab_symbol_info, this function uses
2871 the data returned from search_symbols() to print information
2872 regarding the match to gdb_stdout.
2875 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
2876 int block
, char *last
)
2878 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
2880 fputs_filtered ("\nFile ", gdb_stdout
);
2881 fputs_filtered (s
->filename
, gdb_stdout
);
2882 fputs_filtered (":\n", gdb_stdout
);
2885 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
2886 printf_filtered ("static ");
2888 /* Typedef that is not a C++ class */
2889 if (kind
== TYPES_NAMESPACE
2890 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
2891 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
2892 /* variable, func, or typedef-that-is-c++-class */
2893 else if (kind
< TYPES_NAMESPACE
||
2894 (kind
== TYPES_NAMESPACE
&&
2895 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
2897 type_print (SYMBOL_TYPE (sym
),
2898 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
2899 ? "" : SYMBOL_SOURCE_NAME (sym
)),
2902 printf_filtered (";\n");
2907 /* Tiemann says: "info methods was never implemented." */
2908 char *demangled_name
;
2909 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
2911 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
2913 if (TYPE_FN_FIELD_STUB (t
, block
))
2914 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
2916 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
2917 DMGL_ANSI
| DMGL_PARAMS
);
2918 if (demangled_name
== NULL
)
2919 fprintf_filtered (stream
, "<badly mangled name %s>",
2920 TYPE_FN_FIELD_PHYSNAME (t
, block
));
2923 fputs_filtered (demangled_name
, stream
);
2924 xfree (demangled_name
);
2930 /* This help function for symtab_symbol_info() prints information
2931 for non-debugging symbols to gdb_stdout.
2934 print_msymbol_info (struct minimal_symbol
*msymbol
)
2938 if (TARGET_ADDR_BIT
<= 32)
2939 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
2940 & (CORE_ADDR
) 0xffffffff,
2943 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
2945 printf_filtered ("%s %s\n",
2946 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
2949 /* This is the guts of the commands "info functions", "info types", and
2950 "info variables". It calls search_symbols to find all matches and then
2951 print_[m]symbol_info to print out some useful information about the
2955 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
2957 static char *classnames
[]
2959 {"variable", "function", "type", "method"};
2960 struct symbol_search
*symbols
;
2961 struct symbol_search
*p
;
2962 struct cleanup
*old_chain
;
2963 char *last_filename
= NULL
;
2966 /* must make sure that if we're interrupted, symbols gets freed */
2967 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
2968 old_chain
= make_cleanup_free_search_symbols (symbols
);
2970 printf_filtered (regexp
2971 ? "All %ss matching regular expression \"%s\":\n"
2972 : "All defined %ss:\n",
2973 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
2975 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
2979 if (p
->msymbol
!= NULL
)
2983 printf_filtered ("\nNon-debugging symbols:\n");
2986 print_msymbol_info (p
->msymbol
);
2990 print_symbol_info (kind
,
2995 last_filename
= p
->symtab
->filename
;
2999 do_cleanups (old_chain
);
3003 variables_info (char *regexp
, int from_tty
)
3005 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3009 functions_info (char *regexp
, int from_tty
)
3011 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3016 types_info (char *regexp
, int from_tty
)
3018 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3022 /* Tiemann says: "info methods was never implemented." */
3024 methods_info (char *regexp
)
3026 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
3030 /* Breakpoint all functions matching regular expression. */
3033 rbreak_command_wrapper (char *regexp
, int from_tty
)
3035 rbreak_command (regexp
, from_tty
);
3039 rbreak_command (char *regexp
, int from_tty
)
3041 struct symbol_search
*ss
;
3042 struct symbol_search
*p
;
3043 struct cleanup
*old_chain
;
3045 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3046 old_chain
= make_cleanup_free_search_symbols (ss
);
3048 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3050 if (p
->msymbol
== NULL
)
3052 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3053 + strlen (SYMBOL_NAME (p
->symbol
))
3055 strcpy (string
, p
->symtab
->filename
);
3056 strcat (string
, ":'");
3057 strcat (string
, SYMBOL_NAME (p
->symbol
));
3058 strcat (string
, "'");
3059 break_command (string
, from_tty
);
3060 print_symbol_info (FUNCTIONS_NAMESPACE
,
3064 p
->symtab
->filename
);
3068 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3069 printf_filtered ("<function, no debug info> %s;\n",
3070 SYMBOL_SOURCE_NAME (p
->msymbol
));
3074 do_cleanups (old_chain
);
3078 /* Return Nonzero if block a is lexically nested within block b,
3079 or if a and b have the same pc range.
3080 Return zero otherwise. */
3082 contained_in (struct block
*a
, struct block
*b
)
3086 return BLOCK_START (a
) >= BLOCK_START (b
)
3087 && BLOCK_END (a
) <= BLOCK_END (b
);
3091 /* Helper routine for make_symbol_completion_list. */
3093 static int return_val_size
;
3094 static int return_val_index
;
3095 static char **return_val
;
3097 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3099 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3100 /* Put only the mangled name on the list. */ \
3101 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3102 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3103 completion_list_add_name \
3104 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3106 completion_list_add_name \
3107 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3110 /* Test to see if the symbol specified by SYMNAME (which is already
3111 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3112 characters. If so, add it to the current completion list. */
3115 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3116 char *text
, char *word
)
3121 /* clip symbols that cannot match */
3123 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3128 /* We have a match for a completion, so add SYMNAME to the current list
3129 of matches. Note that the name is moved to freshly malloc'd space. */
3133 if (word
== sym_text
)
3135 new = xmalloc (strlen (symname
) + 5);
3136 strcpy (new, symname
);
3138 else if (word
> sym_text
)
3140 /* Return some portion of symname. */
3141 new = xmalloc (strlen (symname
) + 5);
3142 strcpy (new, symname
+ (word
- sym_text
));
3146 /* Return some of SYM_TEXT plus symname. */
3147 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3148 strncpy (new, word
, sym_text
- word
);
3149 new[sym_text
- word
] = '\0';
3150 strcat (new, symname
);
3153 if (return_val_index
+ 3 > return_val_size
)
3155 newsize
= (return_val_size
*= 2) * sizeof (char *);
3156 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3158 return_val
[return_val_index
++] = new;
3159 return_val
[return_val_index
] = NULL
;
3163 /* Return a NULL terminated array of all symbols (regardless of class)
3164 which begin by matching TEXT. If the answer is no symbols, then
3165 the return value is an array which contains only a NULL pointer.
3167 Problem: All of the symbols have to be copied because readline frees them.
3168 I'm not going to worry about this; hopefully there won't be that many. */
3171 make_symbol_completion_list (char *text
, char *word
)
3173 register struct symbol
*sym
;
3174 register struct symtab
*s
;
3175 register struct partial_symtab
*ps
;
3176 register struct minimal_symbol
*msymbol
;
3177 register struct objfile
*objfile
;
3178 register struct block
*b
, *surrounding_static_block
= 0;
3180 struct partial_symbol
**psym
;
3181 /* The symbol we are completing on. Points in same buffer as text. */
3183 /* Length of sym_text. */
3186 /* Now look for the symbol we are supposed to complete on.
3187 FIXME: This should be language-specific. */
3191 char *quote_pos
= NULL
;
3193 /* First see if this is a quoted string. */
3195 for (p
= text
; *p
!= '\0'; ++p
)
3197 if (quote_found
!= '\0')
3199 if (*p
== quote_found
)
3200 /* Found close quote. */
3202 else if (*p
== '\\' && p
[1] == quote_found
)
3203 /* A backslash followed by the quote character
3204 doesn't end the string. */
3207 else if (*p
== '\'' || *p
== '"')
3213 if (quote_found
== '\'')
3214 /* A string within single quotes can be a symbol, so complete on it. */
3215 sym_text
= quote_pos
+ 1;
3216 else if (quote_found
== '"')
3217 /* A double-quoted string is never a symbol, nor does it make sense
3218 to complete it any other way. */
3220 return_val
= (char **) xmalloc (sizeof (char *));
3221 return_val
[0] = NULL
;
3226 /* It is not a quoted string. Break it based on the characters
3227 which are in symbols. */
3230 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3239 sym_text_len
= strlen (sym_text
);
3241 return_val_size
= 100;
3242 return_val_index
= 0;
3243 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3244 return_val
[0] = NULL
;
3246 /* Look through the partial symtabs for all symbols which begin
3247 by matching SYM_TEXT. Add each one that you find to the list. */
3249 ALL_PSYMTABS (objfile
, ps
)
3251 /* If the psymtab's been read in we'll get it when we search
3252 through the blockvector. */
3256 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3257 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3258 + ps
->n_global_syms
);
3261 /* If interrupted, then quit. */
3263 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3266 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3267 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3268 + ps
->n_static_syms
);
3272 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3276 /* At this point scan through the misc symbol vectors and add each
3277 symbol you find to the list. Eventually we want to ignore
3278 anything that isn't a text symbol (everything else will be
3279 handled by the psymtab code above). */
3281 ALL_MSYMBOLS (objfile
, msymbol
)
3284 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3287 /* Search upwards from currently selected frame (so that we can
3288 complete on local vars. */
3290 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3292 if (!BLOCK_SUPERBLOCK (b
))
3294 surrounding_static_block
= b
; /* For elmin of dups */
3297 /* Also catch fields of types defined in this places which match our
3298 text string. Only complete on types visible from current context. */
3300 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3302 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3303 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3305 struct type
*t
= SYMBOL_TYPE (sym
);
3306 enum type_code c
= TYPE_CODE (t
);
3308 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3310 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3312 if (TYPE_FIELD_NAME (t
, j
))
3314 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3315 sym_text
, sym_text_len
, text
, word
);
3323 /* Go through the symtabs and check the externs and statics for
3324 symbols which match. */
3326 ALL_SYMTABS (objfile
, s
)
3329 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3330 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3332 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3336 ALL_SYMTABS (objfile
, s
)
3339 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3340 /* Don't do this block twice. */
3341 if (b
== surrounding_static_block
)
3343 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3345 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3349 return (return_val
);
3352 /* Like make_symbol_completion_list, but returns a list of symbols
3353 defined in a source file FILE. */
3356 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3358 register struct symbol
*sym
;
3359 register struct symtab
*s
;
3360 register struct block
*b
;
3362 /* The symbol we are completing on. Points in same buffer as text. */
3364 /* Length of sym_text. */
3367 /* Now look for the symbol we are supposed to complete on.
3368 FIXME: This should be language-specific. */
3372 char *quote_pos
= NULL
;
3374 /* First see if this is a quoted string. */
3376 for (p
= text
; *p
!= '\0'; ++p
)
3378 if (quote_found
!= '\0')
3380 if (*p
== quote_found
)
3381 /* Found close quote. */
3383 else if (*p
== '\\' && p
[1] == quote_found
)
3384 /* A backslash followed by the quote character
3385 doesn't end the string. */
3388 else if (*p
== '\'' || *p
== '"')
3394 if (quote_found
== '\'')
3395 /* A string within single quotes can be a symbol, so complete on it. */
3396 sym_text
= quote_pos
+ 1;
3397 else if (quote_found
== '"')
3398 /* A double-quoted string is never a symbol, nor does it make sense
3399 to complete it any other way. */
3401 return_val
= (char **) xmalloc (sizeof (char *));
3402 return_val
[0] = NULL
;
3407 /* It is not a quoted string. Break it based on the characters
3408 which are in symbols. */
3411 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3420 sym_text_len
= strlen (sym_text
);
3422 return_val_size
= 10;
3423 return_val_index
= 0;
3424 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3425 return_val
[0] = NULL
;
3427 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3429 s
= lookup_symtab (srcfile
);
3432 /* Maybe they typed the file with leading directories, while the
3433 symbol tables record only its basename. */
3434 const char *tail
= lbasename (srcfile
);
3437 s
= lookup_symtab (tail
);
3440 /* If we have no symtab for that file, return an empty list. */
3442 return (return_val
);
3444 /* Go through this symtab and check the externs and statics for
3445 symbols which match. */
3447 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3448 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3450 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3453 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3454 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3456 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3459 return (return_val
);
3462 /* A helper function for make_source_files_completion_list. It adds
3463 another file name to a list of possible completions, growing the
3464 list as necessary. */
3467 add_filename_to_list (const char *fname
, char *text
, char *word
,
3468 char ***list
, int *list_used
, int *list_alloced
)
3471 size_t fnlen
= strlen (fname
);
3473 if (*list_used
+ 1 >= *list_alloced
)
3476 *list
= (char **) xrealloc ((char *) *list
,
3477 *list_alloced
* sizeof (char *));
3482 /* Return exactly fname. */
3483 new = xmalloc (fnlen
+ 5);
3484 strcpy (new, fname
);
3486 else if (word
> text
)
3488 /* Return some portion of fname. */
3489 new = xmalloc (fnlen
+ 5);
3490 strcpy (new, fname
+ (word
- text
));
3494 /* Return some of TEXT plus fname. */
3495 new = xmalloc (fnlen
+ (text
- word
) + 5);
3496 strncpy (new, word
, text
- word
);
3497 new[text
- word
] = '\0';
3498 strcat (new, fname
);
3500 (*list
)[*list_used
] = new;
3501 (*list
)[++*list_used
] = NULL
;
3505 not_interesting_fname (const char *fname
)
3507 static const char *illegal_aliens
[] = {
3508 "_globals_", /* inserted by coff_symtab_read */
3513 for (i
= 0; illegal_aliens
[i
]; i
++)
3515 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3521 /* Return a NULL terminated array of all source files whose names
3522 begin with matching TEXT. The file names are looked up in the
3523 symbol tables of this program. If the answer is no matchess, then
3524 the return value is an array which contains only a NULL pointer. */
3527 make_source_files_completion_list (char *text
, char *word
)
3529 register struct symtab
*s
;
3530 register struct partial_symtab
*ps
;
3531 register struct objfile
*objfile
;
3533 int list_alloced
= 1;
3535 size_t text_len
= strlen (text
);
3536 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3537 const char *base_name
;
3541 if (!have_full_symbols () && !have_partial_symbols ())
3544 ALL_SYMTABS (objfile
, s
)
3546 if (not_interesting_fname (s
->filename
))
3548 if (!filename_seen (s
->filename
, 1, &first
)
3549 #if HAVE_DOS_BASED_FILE_SYSTEM
3550 && strncasecmp (s
->filename
, text
, text_len
) == 0
3552 && strncmp (s
->filename
, text
, text_len
) == 0
3556 /* This file matches for a completion; add it to the current
3558 add_filename_to_list (s
->filename
, text
, word
,
3559 &list
, &list_used
, &list_alloced
);
3563 /* NOTE: We allow the user to type a base name when the
3564 debug info records leading directories, but not the other
3565 way around. This is what subroutines of breakpoint
3566 command do when they parse file names. */
3567 base_name
= lbasename (s
->filename
);
3568 if (base_name
!= s
->filename
3569 && !filename_seen (base_name
, 1, &first
)
3570 #if HAVE_DOS_BASED_FILE_SYSTEM
3571 && strncasecmp (base_name
, text
, text_len
) == 0
3573 && strncmp (base_name
, text
, text_len
) == 0
3576 add_filename_to_list (base_name
, text
, word
,
3577 &list
, &list_used
, &list_alloced
);
3581 ALL_PSYMTABS (objfile
, ps
)
3583 if (not_interesting_fname (ps
->filename
))
3587 if (!filename_seen (ps
->filename
, 1, &first
)
3588 #if HAVE_DOS_BASED_FILE_SYSTEM
3589 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3591 && strncmp (ps
->filename
, text
, text_len
) == 0
3595 /* This file matches for a completion; add it to the
3596 current list of matches. */
3597 add_filename_to_list (ps
->filename
, text
, word
,
3598 &list
, &list_used
, &list_alloced
);
3603 base_name
= lbasename (ps
->filename
);
3604 if (base_name
!= ps
->filename
3605 && !filename_seen (base_name
, 1, &first
)
3606 #if HAVE_DOS_BASED_FILE_SYSTEM
3607 && strncasecmp (base_name
, text
, text_len
) == 0
3609 && strncmp (base_name
, text
, text_len
) == 0
3612 add_filename_to_list (base_name
, text
, word
,
3613 &list
, &list_used
, &list_alloced
);
3621 /* Determine if PC is in the prologue of a function. The prologue is the area
3622 between the first instruction of a function, and the first executable line.
3623 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3625 If non-zero, func_start is where we think the prologue starts, possibly
3626 by previous examination of symbol table information.
3630 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3632 struct symtab_and_line sal
;
3633 CORE_ADDR func_addr
, func_end
;
3635 /* We have several sources of information we can consult to figure
3637 - Compilers usually emit line number info that marks the prologue
3638 as its own "source line". So the ending address of that "line"
3639 is the end of the prologue. If available, this is the most
3641 - The minimal symbols and partial symbols, which can usually tell
3642 us the starting and ending addresses of a function.
3643 - If we know the function's start address, we can call the
3644 architecture-defined SKIP_PROLOGUE function to analyze the
3645 instruction stream and guess where the prologue ends.
3646 - Our `func_start' argument; if non-zero, this is the caller's
3647 best guess as to the function's entry point. At the time of
3648 this writing, handle_inferior_event doesn't get this right, so
3649 it should be our last resort. */
3651 /* Consult the partial symbol table, to find which function
3653 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3655 CORE_ADDR prologue_end
;
3657 /* We don't even have minsym information, so fall back to using
3658 func_start, if given. */
3660 return 1; /* We *might* be in a prologue. */
3662 prologue_end
= SKIP_PROLOGUE (func_start
);
3664 return func_start
<= pc
&& pc
< prologue_end
;
3667 /* If we have line number information for the function, that's
3668 usually pretty reliable. */
3669 sal
= find_pc_line (func_addr
, 0);
3671 /* Now sal describes the source line at the function's entry point,
3672 which (by convention) is the prologue. The end of that "line",
3673 sal.end, is the end of the prologue.
3675 Note that, for functions whose source code is all on a single
3676 line, the line number information doesn't always end up this way.
3677 So we must verify that our purported end-of-prologue address is
3678 *within* the function, not at its start or end. */
3680 || sal
.end
<= func_addr
3681 || func_end
<= sal
.end
)
3683 /* We don't have any good line number info, so use the minsym
3684 information, together with the architecture-specific prologue
3686 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3688 return func_addr
<= pc
&& pc
< prologue_end
;
3691 /* We have line number info, and it looks good. */
3692 return func_addr
<= pc
&& pc
< sal
.end
;
3696 /* Begin overload resolution functions */
3699 remove_params (const char *demangled_name
)
3705 if (demangled_name
== NULL
)
3708 /* First find the end of the arg list. */
3709 argp
= strrchr (demangled_name
, ')');
3713 /* Back up to the beginning. */
3716 while (argp
-- > demangled_name
)
3720 else if (*argp
== '(')
3729 internal_error (__FILE__
, __LINE__
,
3730 "bad demangled name %s\n", demangled_name
);
3731 while (argp
[-1] == ' ' && argp
> demangled_name
)
3734 new_name
= xmalloc (argp
- demangled_name
+ 1);
3735 memcpy (new_name
, demangled_name
, argp
- demangled_name
);
3736 new_name
[argp
- demangled_name
] = '\0';
3740 /* Helper routine for make_symbol_completion_list. */
3742 static int sym_return_val_size
;
3743 static int sym_return_val_index
;
3744 static struct symbol
**sym_return_val
;
3746 /* Test to see if the symbol specified by SYMNAME (which is already
3747 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3748 characters. If so, add it to the current completion list. */
3751 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3757 /* If there is no type information, we can't do anything, so skip */
3758 if (SYMBOL_TYPE (sym
) == NULL
)
3761 /* skip any symbols that we've already considered. */
3762 for (i
= 0; i
< sym_return_val_index
; ++i
)
3763 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3766 /* Get the demangled name without parameters */
3767 sym_name
= remove_params (SYMBOL_DEMANGLED_NAME (sym
));
3771 /* skip symbols that cannot match */
3772 if (strcmp (sym_name
, oload_name
) != 0)
3780 /* We have a match for an overload instance, so add SYM to the current list
3781 * of overload instances */
3782 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3784 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3785 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3787 sym_return_val
[sym_return_val_index
++] = sym
;
3788 sym_return_val
[sym_return_val_index
] = NULL
;
3791 /* Return a null-terminated list of pointers to function symbols that
3792 * match name of the supplied symbol FSYM.
3793 * This is used in finding all overloaded instances of a function name.
3794 * This has been modified from make_symbol_completion_list. */
3798 make_symbol_overload_list (struct symbol
*fsym
)
3800 register struct symbol
*sym
;
3801 register struct symtab
*s
;
3802 register struct partial_symtab
*ps
;
3803 register struct objfile
*objfile
;
3804 register struct block
*b
, *surrounding_static_block
= 0;
3806 /* The name we are completing on. */
3807 char *oload_name
= NULL
;
3808 /* Length of name. */
3809 int oload_name_len
= 0;
3811 /* Look for the symbol we are supposed to complete on. */
3813 oload_name
= remove_params (SYMBOL_DEMANGLED_NAME (fsym
));
3816 sym_return_val_size
= 1;
3817 sym_return_val
= (struct symbol
**) xmalloc (2 * sizeof (struct symbol
*));
3818 sym_return_val
[0] = fsym
;
3819 sym_return_val
[1] = NULL
;
3821 return sym_return_val
;
3823 oload_name_len
= strlen (oload_name
);
3825 sym_return_val_size
= 100;
3826 sym_return_val_index
= 0;
3827 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3828 sym_return_val
[0] = NULL
;
3830 /* Look through the partial symtabs for all symbols which begin
3831 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3833 ALL_PSYMTABS (objfile
, ps
)
3835 struct partial_symbol
**psym
;
3837 /* If the psymtab's been read in we'll get it when we search
3838 through the blockvector. */
3842 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3843 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3844 + ps
->n_global_syms
);
3847 /* If interrupted, then quit. */
3849 /* This will cause the symbol table to be read if it has not yet been */
3850 s
= PSYMTAB_TO_SYMTAB (ps
);
3853 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3854 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3855 + ps
->n_static_syms
);
3859 /* This will cause the symbol table to be read if it has not yet been */
3860 s
= PSYMTAB_TO_SYMTAB (ps
);
3864 /* Search upwards from currently selected frame (so that we can
3865 complete on local vars. */
3867 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3869 if (!BLOCK_SUPERBLOCK (b
))
3871 surrounding_static_block
= b
; /* For elimination of dups */
3874 /* Also catch fields of types defined in this places which match our
3875 text string. Only complete on types visible from current context. */
3877 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3879 overload_list_add_symbol (sym
, oload_name
);
3883 /* Go through the symtabs and check the externs and statics for
3884 symbols which match. */
3886 ALL_SYMTABS (objfile
, s
)
3889 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3890 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3892 overload_list_add_symbol (sym
, oload_name
);
3896 ALL_SYMTABS (objfile
, s
)
3899 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3900 /* Don't do this block twice. */
3901 if (b
== surrounding_static_block
)
3903 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3905 overload_list_add_symbol (sym
, oload_name
);
3911 return (sym_return_val
);
3914 /* End of overload resolution functions */
3916 struct symtabs_and_lines
3917 decode_line_spec (char *string
, int funfirstline
)
3919 struct symtabs_and_lines sals
;
3920 struct symtab_and_line cursal
;
3923 error ("Empty line specification.");
3925 /* We use whatever is set as the current source line. We do not try
3926 and get a default or it will recursively call us! */
3927 cursal
= get_current_source_symtab_and_line ();
3929 sals
= decode_line_1 (&string
, funfirstline
,
3930 cursal
.symtab
, cursal
.line
,
3934 error ("Junk at end of line specification: %s", string
);
3939 static char *name_of_main
;
3942 set_main_name (const char *name
)
3944 if (name_of_main
!= NULL
)
3946 xfree (name_of_main
);
3947 name_of_main
= NULL
;
3951 name_of_main
= xstrdup (name
);
3958 if (name_of_main
!= NULL
)
3959 return name_of_main
;
3966 _initialize_symtab (void)
3968 add_info ("variables", variables_info
,
3969 "All global and static variable names, or those matching REGEXP.");
3971 add_com ("whereis", class_info
, variables_info
,
3972 "All global and static variable names, or those matching REGEXP.");
3974 add_info ("functions", functions_info
,
3975 "All function names, or those matching REGEXP.");
3978 /* FIXME: This command has at least the following problems:
3979 1. It prints builtin types (in a very strange and confusing fashion).
3980 2. It doesn't print right, e.g. with
3981 typedef struct foo *FOO
3982 type_print prints "FOO" when we want to make it (in this situation)
3983 print "struct foo *".
3984 I also think "ptype" or "whatis" is more likely to be useful (but if
3985 there is much disagreement "info types" can be fixed). */
3986 add_info ("types", types_info
,
3987 "All type names, or those matching REGEXP.");
3990 add_info ("methods", methods_info
,
3991 "All method names, or those matching REGEXP::REGEXP.\n\
3992 If the class qualifier is omitted, it is assumed to be the current scope.\n\
3993 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
3996 add_info ("sources", sources_info
,
3997 "Source files in the program.");
3999 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4000 "Set a breakpoint for all functions matching REGEXP.");
4004 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4005 add_com ("lg", class_info
, variables_info
,
4006 "All global and static variable names, or those matching REGEXP.");
4009 /* Initialize the one built-in type that isn't language dependent... */
4010 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4011 "<unknown type>", (struct objfile
*) NULL
);